Network resources allocated for particular application traffic are aware of the characteristics of L4+ content to be transmitted. One embodiment of the invention realizes network resource allocation in terms of three intelligent modules, gateway, provisioning and classification. A gateway module exerts network control functions in response to application requests for network resources. The network control functions include traffic path setup, bandwidth allocation and so on. Characteristics of the content are also specified in the received application network resource requests. Under request of the gateway module, a provisioning module allocates network resources such as bandwidth in optical networks and edge devices as well. An optical network resource allocation leads to a provisioning optical route. Under request of the gateway module, a classification module differentiates applications traffic according to content specifications, and thus creates and applies content-aware rule data for edge devices to forward content-specified traffic towards respective provisioning optical routes.
https://www.google.com/patents/US7944827?dq=US+7944827&hl=en&sa=X&ei=-XJSVPLjF8Kn8AXtz4G4Cw&ved=0CB8Q6AEwAA
Network resources allocated for particular application traffic are aware of the characteristics of L4+ content to be transmitted. One embodiment of the invention realizes network resource allocation in terms of three intelligent modules, gateway, provisioning and classification. A gateway module exerts network control functions in response to application requests for network resources. The network control functions include traffic path setup, bandwidth allocation and so on. Characteristics of the content are also specified in the received application network resource requests. Under request of the gateway module, a provisioning module allocates network resources such as bandwidth in optical networks and edge devices as well. An optical network resource allocation leads to a provisioning optical route. Under request of the gateway module, a classification module differentiates applications traffic according to content specifications, and thus creates and applies content-aware rule data for edge devices to forward content-specified traffic towards respective provisioning optical routes.
https://www.google.com/patents/US7580349?dq=US+7580349&hl=en&sa=X&ei=DXVSVID-EoTc8AW-_IDwBw&ved=0CB8Q6AEwAA
Network resources allocated for particular application traffic are aware of the characteristics of L4+ content to be transmitted. One embodiment of the invention realizes network resource allocation in terms of three intelligent modules, gateway, provisioning and classification. A gateway module exerts network control functions in response to application requests for network resources. The network control functions include traffic path setup, bandwidth allocation and so on. Characteristics of the content are also specified in the received application network resource requests. Under request of the gateway module, a provisioning module allocates network resources such as bandwidth in optical networks and edge devices as well. An optical network resource allocation leads to a provisioning optical route. Under request of the gateway module, a classification module differentiates applications traffic according to content specifications, and thus creates and applies content-aware rule data for edge devices to forward content-specified traffic towards respective provisioning optical routes.
https://www.google.com/patents/US20090279562?dq=20090279562&hl=en&sa=X&ei=FMtTVMy2M4PPmwXo3oCgDQ&ved=0CB8Q6AEwAA
International Journal of Engineering and Science Invention (IJESI)inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Real time approach of piezo actuated beam for wireless seismic measurement us...eSAT Journals
Abstract
Piezo-actuated beam is used for wireless seismic measurement and indication using Lab VIEW. Principle of piezoelectric materials
has been utilized here i.e. Piezoelectric materials deform when a voltage is applied to them and inversely will produce a voltage when
they are deformed. For this reason, they can be used as both sensors and actuators. Here, Lab VIEW 2013 version, NI ELVIS
(Educational Laboratory Virtual Instrumentation Suite) and Bluetooth device connected with PC has been utilized for acquiring and
indicating vibration. The developed design is expected to be used universally for measuring seismic waves and also in Industrial
applications for the measurement of micro vibration.
Keywords: Seismic measurement, Lab VIEW, wireless communication
Performance Improvement of IEEE 802.22 WRAN Physical LayerIOSR Journals
The spectrum available for the wireless services is limited, the increased demand of wireless
application has put a lot of limitations on the utilization of available radio spectrum. For the efficient spectrum
utilization for wireless application IEEE 802.22 standard i.e. WRAN (Wireless Regional Area Network) is
developed which is based on cognitive radio technique that senses the free available spectrum. It allows sharing
of geographically unused channels allocated to the TV Broadcast Service, without interference.
In this paper we are evaluating the performance of WRAN over physical layer with QPSK, 16-QAM
and 64-QAM modulation with Convolution coding with code rate of 1/2, 2/3, 3/4, 5/6 and obtaining the BER
curves for rician channel. Simulation is performed in MATLAB
Network resources allocated for particular application traffic are aware of the characteristics of L4+ content to be transmitted. One embodiment of the invention realizes network resource allocation in terms of three intelligent modules, gateway, provisioning and classification. A gateway module exerts network control functions in response to application requests for network resources. The network control functions include traffic path setup, bandwidth allocation and so on. Characteristics of the content are also specified in the received application network resource requests. Under request of the gateway module, a provisioning module allocates network resources such as bandwidth in optical networks and edge devices as well. An optical network resource allocation leads to a provisioning optical route. Under request of the gateway module, a classification module differentiates applications traffic according to content specifications, and thus creates and applies content-aware rule data for edge devices to forward content-specified traffic towards respective provisioning optical routes.
https://www.google.com/patents/US7580349?dq=US+7580349&hl=en&sa=X&ei=DXVSVID-EoTc8AW-_IDwBw&ved=0CB8Q6AEwAA
Network resources allocated for particular application traffic are aware of the characteristics of L4+ content to be transmitted. One embodiment of the invention realizes network resource allocation in terms of three intelligent modules, gateway, provisioning and classification. A gateway module exerts network control functions in response to application requests for network resources. The network control functions include traffic path setup, bandwidth allocation and so on. Characteristics of the content are also specified in the received application network resource requests. Under request of the gateway module, a provisioning module allocates network resources such as bandwidth in optical networks and edge devices as well. An optical network resource allocation leads to a provisioning optical route. Under request of the gateway module, a classification module differentiates applications traffic according to content specifications, and thus creates and applies content-aware rule data for edge devices to forward content-specified traffic towards respective provisioning optical routes.
https://www.google.com/patents/US20090279562?dq=20090279562&hl=en&sa=X&ei=FMtTVMy2M4PPmwXo3oCgDQ&ved=0CB8Q6AEwAA
International Journal of Engineering and Science Invention (IJESI)inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Real time approach of piezo actuated beam for wireless seismic measurement us...eSAT Journals
Abstract
Piezo-actuated beam is used for wireless seismic measurement and indication using Lab VIEW. Principle of piezoelectric materials
has been utilized here i.e. Piezoelectric materials deform when a voltage is applied to them and inversely will produce a voltage when
they are deformed. For this reason, they can be used as both sensors and actuators. Here, Lab VIEW 2013 version, NI ELVIS
(Educational Laboratory Virtual Instrumentation Suite) and Bluetooth device connected with PC has been utilized for acquiring and
indicating vibration. The developed design is expected to be used universally for measuring seismic waves and also in Industrial
applications for the measurement of micro vibration.
Keywords: Seismic measurement, Lab VIEW, wireless communication
Performance Improvement of IEEE 802.22 WRAN Physical LayerIOSR Journals
The spectrum available for the wireless services is limited, the increased demand of wireless
application has put a lot of limitations on the utilization of available radio spectrum. For the efficient spectrum
utilization for wireless application IEEE 802.22 standard i.e. WRAN (Wireless Regional Area Network) is
developed which is based on cognitive radio technique that senses the free available spectrum. It allows sharing
of geographically unused channels allocated to the TV Broadcast Service, without interference.
In this paper we are evaluating the performance of WRAN over physical layer with QPSK, 16-QAM
and 64-QAM modulation with Convolution coding with code rate of 1/2, 2/3, 3/4, 5/6 and obtaining the BER
curves for rician channel. Simulation is performed in MATLAB
Scheduling for interference mitigation using enhanced intercell interference ...eSAT Journals
Abstract Deployment of low power base station (pico) in macro cell is a key for providing high data rates. Cell range expansion is one of the features of LTE-advanced where low power base station in a heterogeneous network can increase their coverage area and neighboring cells can offload users to low power base station to reduce overload in macro cell. This presents a very challenging multi-user communication problem. Co-channel deployed Het-Net will experience interference between pico and macro. The main challenge of pico cells embedded into a macro cell is to let more users profit from the additional bandwidth introduced into the network. Enhanced Inter-cell Interference Coordination (eICIC) has been introduced to solve interference problem. Scheduling for eICIC is used to provide best solution for interference mitigation, overload in macro cell, fairness in resource usage by users. In this paper we have analyzed Round Robin scheduling for eICIC, results prove that fairness is maintained between users and throughput has been improved. Key Words: LTE - Long term Evolution, UE - User Equipment, eNB – eNodeB.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
This video presents an educational overview of the RapidIO architecture and ecosystem. The RapidIO architecture is a high-performance packet-switched, interconnect technology for interconnecting chips on a circuit board, and circuit boards to each other using a backplane. This technology is designed specifically for embedded systems, primarily for the networking, communications, and signal processing markets.
Serial RapidIO solutions from IDT include switching and bridging products that are ideal for building peer-to-peer multi-processor systems with 100ns latency, low power consumption, reliable packet termination — all with industry-standard based support at up to 20 Gbps per port. IDT's Serial RapidIO solutions are ideal for wireless base station infrastructure, video, server, imaging, military and industrial control applications.
Video presented by Barry Wood, Expert Applications Engineer at IDT. To learn more about IDT's rich portfolio of RapidIO switches and bridges, visit http://www.idt.com/go/SRIO.
A efficacy of different buffer size on latency of network on chip (NoC)journalBEEI
Moore's prediction has been used to set targets for research and development in semiconductor industry for years now. A burgeoning number of processing cores on a chip demand competent and scalable communication architecture such as network-on-chip (NoC). NoC technology applies networking theory and methods to on-chip communication and brings noteworthy improvements over conventional bus and crossbar interconnections. Calculated performances such as latency, throughput, and bandwidth are characterized at design time to assured the performance of NoC. However, if communication pattern or parameters set like buffer size need to be altered, there might result in large area and power consumption or increased latency. Routers with large input buffers improve the efficiency of NoC communication while routers with small buffers reduce power consumption but result in high latency. This paper intention is to validate that size of buffer exert influence to NoC performance in several different network topologies. It is concluded that the way in which routers are interrelated or arranged affect NoC’s performance (latency) where different buffer sizes were adapted. That is why buffering requirements for different routers may vary based on their location in the network and the tasks assigned to them.
Performance Analysis of IEEE 802.15.4 Transceiver System under Adaptive White...IJECEIAES
Zigbee technology has been developed for short range wireless sensor networks and it follows IEEE 802.15.4 standard. For such sensors, several considerations should be taken including; low data rate and less design complexity in order to achieve efficient performance considering to the transceiver systems. This research focuses on implementing a digital transceiver system for Zigbee sensor based on IEEE 802.15.4. The system is implemented using offset quadrature phase shift keying (OQPSK) modulation technique with half sine pulse-shaping method. Direct conversion scheme has been used in the design of Zigbee receiver in order to fulfill the requirements mentioned above. System performance is analyzed considering to BER when it encountered adaptive white Gaussian noise (AWGN), besides showing the effect of using direct sequence spread spectrum (DSSS) technique.
TRUST BASED ROUTING METRIC FOR RPL ROUTING PROTOCOL IN THE INTERNET OF THINGSpijans
While smart factories are becoming widely recognized as a fundamental concept of Industry 4.0, their implementation has posed several challenges insofar that they generate and process vast amounts of security critical and privacy sensitive data, in addition to the fact that they deploy IoT heterogeneous and constrained devices communicating with each other and being accessed ubiquitously through lossy networks. In this scenario, the routing of data is a specific area of concern especially with the inherent constraints and limiting properties of such devices like processing resources, memory capacity and battery life. To suit these constraints and to provide the required connectivity, the IETF has developed several standards, among them the RPL routing protocol for Low powerand Lossy Networks (LLNs). However, and even though RPL provides support for integrity and confidentiality of messages, its security may be compromised by several threats and attacks. We propose in this work TRM-RPL, a Trust based Routing Metric for the RPL protocol in an IIoT based environments. TRM-RPL uses a trust management mechanism to detect malicious behaviors and resist routing attacks while providing QoS guarantees. In addition, our model addresses both node and link trust and follows a multidimensional approach to enable
an accurate trust assessment for IoT entities. TRM-RPL is implemented, successfully tested and compared with the standard RPL protocol where its effectiveniness and resilience to attacks has been proved to be better.
Performance evaluation of VLC system using new modulation approachjournalBEEI
We propose a modified OFDM modulation based on multiband scheme for visible light communications (VLC) system. The method called catenated-OFDM VLC system can efficiently boost the propagation distance and combat multipath induced the inter symbol interference and inter carrier interference. Design parameters such as number of optical bands, input power, distance and data rate are varied to see their effect on the system performances. Simulation analysis is done using Optisys software Ver. 11.0. The results show that the proposed system offers a good performance at longer transmission distance of 12 m for input power of 2 dBm in case of Band=3 with 10 Gbps data rate. BER curves also indicates that the proposed system can be operated at very high data rate of 15 Gbps. This exhibits the ability of the proposed system to be one of the candidate for future optical wireless communication system.
Networking Protocols for Internet of Thingsrjain51
Class lecture by Prof. Raj Jain on Networking Protocols for Internet of Things. The lecture covers IEEE 802.15.4, 6LowPAN, 6LowPAN Adaptation Layer, Mesh Addressing Header, 6LowPAN Broadcast Header, 6LowPAN Fragment Header, Address Formation, Stateless Compression, Context Based Compression, Routing Protocol for Low-Power and Lossy Networks (RPL), RPL Concepts, RPL Control Messages, DODAG Formation Example, RPL Data Forwarding Video recording available in YouTube.
Simulation of IEEE 802.16e Physical LayerIOSR Journals
Abstract : Growth in technology has led to unprecedented demand for high speed Internet access. IEEE
802.16e (Mobile WiMAX) is a wireless communication standard with high data transfer rates and good
performance. It not only is efficient as compared to its counterpart technologies today (Wi-Fi and 3G), but also
lays the foundation for 4G mobile communication. In 4G wireless communication systems, bandwidth is a
precious resource, and service providers are continuously met with the challenge of accommodating more users
within a limited allocated bandwidth. To increase data rate of wireless medium with higher performance,
Mobile WiMAX uses Orthogonal Frequency Division Multiple Access (OFDMA). This paper describes the
simulation of the physical layer of IEEE 802.16e using Simulink in Matlab 7.0 (R2010a). The system
performance is evaluated considering the Signal to noise ratio (SNR) and Bit error rate (BER) parameters.
Keywords: 802.16e, OFDMA, Mobile WiMAX.
Motivation and results coverage enhancment for 3GPP NR Rel.17 Eiko Seidel
In this paper we would like to emphasize once again the need to look at large coverage scenarios for 5G NR and express our support for the creation of a Rel.17 work item. Furthermore, we provide first system-level simulation results to further motivate work on coverage enhancements and prove our commitment to contribute to a study item in the working groups in Rel.17 with independent performance evaluation.
A Grid Proxy Architecture for Network Resources (GPAN) is proposed to allow Grid applications to access resources shared in communication network domains. GPAN bridges Grid services serving user applications and network services controlling network devices through its proxy functions such as resource data and management proxies. Working with Grid resource index and broker services, GPAN employs distributed network service peers (NSP) in network domains to discover, negotiate and allocate network resources such as bandwidth for Grid applications. An elected master NSP is the unique Grid node that runs GPAN and represents the whole network to share network resources to Grids without Grid involvement of network devices. GPAN provides the Grid Proxy service (GPS) to interface with Grid services and applications, and the Grid Delegation service (GDS) to interface with network services to utilize network resources. Resource-based XML messaging is employed for the GPAN proxy communication.
https://www.google.com/patents/US8341257?dq=US+8341257&hl=en&sa=X&ei=Zm1SVMvBD6OimQXAsYKQDw&ved=0CB0Q6AEwAA
A Grid Proxy Architecture for Network Resources (GPAN) is proposed to allow Grid applications to access resources shared in communication network domains. GPAN bridges Grid services serving user applications and network services controlling network devices through its proxy functions such as resource data and management proxies. Working with Grid resource index and broker services, GPAN employs distributed network service peers (NSP) in network domains to discover, negotiate and allocate network resources such as bandwidth for Grid applications. An elected master NSP is the unique Grid node that runs GPAN and represents the whole network to share network resources to Grids without Grid involvement of network devices. GPAN provides the Grid Proxy service (GPS) to interface with Grid services and applications, and the Grid Delegation service (GDS) to interface with network services to utilize network resources. Resource-based XML messaging is employed for the GPAN proxy communication.
https://www.google.com/patents/US8078708?dq=US+8078708&hl=en&sa=X&ei=mnFSVOLRNI2A8QXyt4GgBA&ved=0CB8Q6AEwAA
Embodiments of the present invention present a method and apparatus for photonic line sharing for high-speed routers. Photonic switches receive high-speed optical data streams and produce the data streams to a router operating according to routing logic and produce optical data streams according to destination addresses stored in the data packets. Each photonic switch can be configured as one of a 1:N multiplexer or an M:N cross-connect switch. In one embodiment, optical data is converted to electrical data prior to routing, while an alternate embodiment routes only optical data. Another embodiment transfers large volumes of high-speed data through an optical bypass line in a circuit switched network to bypass the switch fabric thereby routing the data packets directly to the destination. An edge device selects one of the packet switched network or the circuit switched network. The bypass resources are released when the large volume of high-speed data is transferred.
Scheduling for interference mitigation using enhanced intercell interference ...eSAT Journals
Abstract Deployment of low power base station (pico) in macro cell is a key for providing high data rates. Cell range expansion is one of the features of LTE-advanced where low power base station in a heterogeneous network can increase their coverage area and neighboring cells can offload users to low power base station to reduce overload in macro cell. This presents a very challenging multi-user communication problem. Co-channel deployed Het-Net will experience interference between pico and macro. The main challenge of pico cells embedded into a macro cell is to let more users profit from the additional bandwidth introduced into the network. Enhanced Inter-cell Interference Coordination (eICIC) has been introduced to solve interference problem. Scheduling for eICIC is used to provide best solution for interference mitigation, overload in macro cell, fairness in resource usage by users. In this paper we have analyzed Round Robin scheduling for eICIC, results prove that fairness is maintained between users and throughput has been improved. Key Words: LTE - Long term Evolution, UE - User Equipment, eNB – eNodeB.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
This video presents an educational overview of the RapidIO architecture and ecosystem. The RapidIO architecture is a high-performance packet-switched, interconnect technology for interconnecting chips on a circuit board, and circuit boards to each other using a backplane. This technology is designed specifically for embedded systems, primarily for the networking, communications, and signal processing markets.
Serial RapidIO solutions from IDT include switching and bridging products that are ideal for building peer-to-peer multi-processor systems with 100ns latency, low power consumption, reliable packet termination — all with industry-standard based support at up to 20 Gbps per port. IDT's Serial RapidIO solutions are ideal for wireless base station infrastructure, video, server, imaging, military and industrial control applications.
Video presented by Barry Wood, Expert Applications Engineer at IDT. To learn more about IDT's rich portfolio of RapidIO switches and bridges, visit http://www.idt.com/go/SRIO.
A efficacy of different buffer size on latency of network on chip (NoC)journalBEEI
Moore's prediction has been used to set targets for research and development in semiconductor industry for years now. A burgeoning number of processing cores on a chip demand competent and scalable communication architecture such as network-on-chip (NoC). NoC technology applies networking theory and methods to on-chip communication and brings noteworthy improvements over conventional bus and crossbar interconnections. Calculated performances such as latency, throughput, and bandwidth are characterized at design time to assured the performance of NoC. However, if communication pattern or parameters set like buffer size need to be altered, there might result in large area and power consumption or increased latency. Routers with large input buffers improve the efficiency of NoC communication while routers with small buffers reduce power consumption but result in high latency. This paper intention is to validate that size of buffer exert influence to NoC performance in several different network topologies. It is concluded that the way in which routers are interrelated or arranged affect NoC’s performance (latency) where different buffer sizes were adapted. That is why buffering requirements for different routers may vary based on their location in the network and the tasks assigned to them.
Performance Analysis of IEEE 802.15.4 Transceiver System under Adaptive White...IJECEIAES
Zigbee technology has been developed for short range wireless sensor networks and it follows IEEE 802.15.4 standard. For such sensors, several considerations should be taken including; low data rate and less design complexity in order to achieve efficient performance considering to the transceiver systems. This research focuses on implementing a digital transceiver system for Zigbee sensor based on IEEE 802.15.4. The system is implemented using offset quadrature phase shift keying (OQPSK) modulation technique with half sine pulse-shaping method. Direct conversion scheme has been used in the design of Zigbee receiver in order to fulfill the requirements mentioned above. System performance is analyzed considering to BER when it encountered adaptive white Gaussian noise (AWGN), besides showing the effect of using direct sequence spread spectrum (DSSS) technique.
TRUST BASED ROUTING METRIC FOR RPL ROUTING PROTOCOL IN THE INTERNET OF THINGSpijans
While smart factories are becoming widely recognized as a fundamental concept of Industry 4.0, their implementation has posed several challenges insofar that they generate and process vast amounts of security critical and privacy sensitive data, in addition to the fact that they deploy IoT heterogeneous and constrained devices communicating with each other and being accessed ubiquitously through lossy networks. In this scenario, the routing of data is a specific area of concern especially with the inherent constraints and limiting properties of such devices like processing resources, memory capacity and battery life. To suit these constraints and to provide the required connectivity, the IETF has developed several standards, among them the RPL routing protocol for Low powerand Lossy Networks (LLNs). However, and even though RPL provides support for integrity and confidentiality of messages, its security may be compromised by several threats and attacks. We propose in this work TRM-RPL, a Trust based Routing Metric for the RPL protocol in an IIoT based environments. TRM-RPL uses a trust management mechanism to detect malicious behaviors and resist routing attacks while providing QoS guarantees. In addition, our model addresses both node and link trust and follows a multidimensional approach to enable
an accurate trust assessment for IoT entities. TRM-RPL is implemented, successfully tested and compared with the standard RPL protocol where its effectiveniness and resilience to attacks has been proved to be better.
Performance evaluation of VLC system using new modulation approachjournalBEEI
We propose a modified OFDM modulation based on multiband scheme for visible light communications (VLC) system. The method called catenated-OFDM VLC system can efficiently boost the propagation distance and combat multipath induced the inter symbol interference and inter carrier interference. Design parameters such as number of optical bands, input power, distance and data rate are varied to see their effect on the system performances. Simulation analysis is done using Optisys software Ver. 11.0. The results show that the proposed system offers a good performance at longer transmission distance of 12 m for input power of 2 dBm in case of Band=3 with 10 Gbps data rate. BER curves also indicates that the proposed system can be operated at very high data rate of 15 Gbps. This exhibits the ability of the proposed system to be one of the candidate for future optical wireless communication system.
Networking Protocols for Internet of Thingsrjain51
Class lecture by Prof. Raj Jain on Networking Protocols for Internet of Things. The lecture covers IEEE 802.15.4, 6LowPAN, 6LowPAN Adaptation Layer, Mesh Addressing Header, 6LowPAN Broadcast Header, 6LowPAN Fragment Header, Address Formation, Stateless Compression, Context Based Compression, Routing Protocol for Low-Power and Lossy Networks (RPL), RPL Concepts, RPL Control Messages, DODAG Formation Example, RPL Data Forwarding Video recording available in YouTube.
Simulation of IEEE 802.16e Physical LayerIOSR Journals
Abstract : Growth in technology has led to unprecedented demand for high speed Internet access. IEEE
802.16e (Mobile WiMAX) is a wireless communication standard with high data transfer rates and good
performance. It not only is efficient as compared to its counterpart technologies today (Wi-Fi and 3G), but also
lays the foundation for 4G mobile communication. In 4G wireless communication systems, bandwidth is a
precious resource, and service providers are continuously met with the challenge of accommodating more users
within a limited allocated bandwidth. To increase data rate of wireless medium with higher performance,
Mobile WiMAX uses Orthogonal Frequency Division Multiple Access (OFDMA). This paper describes the
simulation of the physical layer of IEEE 802.16e using Simulink in Matlab 7.0 (R2010a). The system
performance is evaluated considering the Signal to noise ratio (SNR) and Bit error rate (BER) parameters.
Keywords: 802.16e, OFDMA, Mobile WiMAX.
Motivation and results coverage enhancment for 3GPP NR Rel.17 Eiko Seidel
In this paper we would like to emphasize once again the need to look at large coverage scenarios for 5G NR and express our support for the creation of a Rel.17 work item. Furthermore, we provide first system-level simulation results to further motivate work on coverage enhancements and prove our commitment to contribute to a study item in the working groups in Rel.17 with independent performance evaluation.
A Grid Proxy Architecture for Network Resources (GPAN) is proposed to allow Grid applications to access resources shared in communication network domains. GPAN bridges Grid services serving user applications and network services controlling network devices through its proxy functions such as resource data and management proxies. Working with Grid resource index and broker services, GPAN employs distributed network service peers (NSP) in network domains to discover, negotiate and allocate network resources such as bandwidth for Grid applications. An elected master NSP is the unique Grid node that runs GPAN and represents the whole network to share network resources to Grids without Grid involvement of network devices. GPAN provides the Grid Proxy service (GPS) to interface with Grid services and applications, and the Grid Delegation service (GDS) to interface with network services to utilize network resources. Resource-based XML messaging is employed for the GPAN proxy communication.
https://www.google.com/patents/US8341257?dq=US+8341257&hl=en&sa=X&ei=Zm1SVMvBD6OimQXAsYKQDw&ved=0CB0Q6AEwAA
A Grid Proxy Architecture for Network Resources (GPAN) is proposed to allow Grid applications to access resources shared in communication network domains. GPAN bridges Grid services serving user applications and network services controlling network devices through its proxy functions such as resource data and management proxies. Working with Grid resource index and broker services, GPAN employs distributed network service peers (NSP) in network domains to discover, negotiate and allocate network resources such as bandwidth for Grid applications. An elected master NSP is the unique Grid node that runs GPAN and represents the whole network to share network resources to Grids without Grid involvement of network devices. GPAN provides the Grid Proxy service (GPS) to interface with Grid services and applications, and the Grid Delegation service (GDS) to interface with network services to utilize network resources. Resource-based XML messaging is employed for the GPAN proxy communication.
https://www.google.com/patents/US8078708?dq=US+8078708&hl=en&sa=X&ei=mnFSVOLRNI2A8QXyt4GgBA&ved=0CB8Q6AEwAA
Embodiments of the present invention present a method and apparatus for photonic line sharing for high-speed routers. Photonic switches receive high-speed optical data streams and produce the data streams to a router operating according to routing logic and produce optical data streams according to destination addresses stored in the data packets. Each photonic switch can be configured as one of a 1:N multiplexer or an M:N cross-connect switch. In one embodiment, optical data is converted to electrical data prior to routing, while an alternate embodiment routes only optical data. Another embodiment transfers large volumes of high-speed data through an optical bypass line in a circuit switched network to bypass the switch fabric thereby routing the data packets directly to the destination. An edge device selects one of the packet switched network or the circuit switched network. The bypass resources are released when the large volume of high-speed data is transferred.
Network on Chip Architecture and Routing Techniques: A surveyIJRES Journal
The processor designing and development was designed to perform various complex logical information exchange and processing operations in a variety of resolutions. They mainly rely on concurrent and sync, both that of the software and hardware to enhance the productivity and performance. With the high speed growth approaching multi-billion transistor integration era, some of the main problems which are symbolized by all gate lengths in the range of 60-90 nm, will be from non-scalable delays generated by wire. All similar problems may be solved by using Network on Chip (NOC) systems. In the presented paper, we have summarized research papers and contributions in NOC area. With advancement in the technology in the on chip communication, faster interaction between devices is becoming vital. Network on Chip (NOC) can be one of the solutions for faster on chip communication. For efficient link between devices of NOC, routers are needed. This paper also reviews implementation of routing techniques. The use of routing gives higher throughput as required for dealing with complexity of modern systems. It is mainly focused on the routing design parameters on both system level including traffic pattern, network topology and routing algorithm, and architecture level including arbitration algorithm.
Method and apparatus for intelligent management of a network elementTal Lavian Ph.D.
A network element (NE) includes an intelligent interface (II) with its own operating environment rendering it active during the NE boot process, and with separate intelligence allowing it to take actions on the NE prior to, during, and after the boot process. The combination of independent operation and increased intelligence provides enhanced management opportunities to enable the NE to be controlled throughout the boot process and after completion of the boot process. For example, files may be uploaded to the NE before or during the boot process to restart the NE from a new software image. The II allows this downloading process to occur in parallel on multiple NEs from a centralized storage resource. Diagnostic checks may be run on the NE, and files, and MIB information, and other data may be transmitted from the II to enable a network manager to more effectively manage the NE.
https://www.google.com/patents/US7734748?dq=US+7734748&hl=en&sa=X&ei=5XNSVL_xDqTNmwXd44HoDA&ved=0CB8Q6AEwAA
Many intellectual property (IP) modules are present in contemporary system on chips (SoCs). This could provide an issue with interconnection among different IP modules, which would limit the system's ability to scale. Traditional bus-based SoC architectures have a connectivity bottleneck, and network on chip (NoC) has evolved as an embedded switching network to address this issue. The interconnections between various cores or IP modules on a chip have a significant impact on communication and chip performance in terms of power, area latency and throughput. Also, designing a reliable fault tolerant NoC became a significant concern. In fault tolerant NoC it becomes critical to identify faulty node and dynamically reroute the packets keeping minimum latency. This study provides an insight into a domain of NoC, with intention of understanding fault tolerant approach based on the XY routing algorithm for 4×4 mesh architecture. The fault tolerant NoC design is synthesized on field programmable gate array (FPGA).
Evaluation of load balancing algorithms on overlappiing wireless accesspointsnooriasukmaningtyas
Wireless networks came into the computing world replacing the costlier and
more complex wired method of connecting numerous equipment in the same
or different location via the use of cables. It provides the user devices a
connection to one another and the greater internet via connections to access
points. Generally, 802.11 access point products follow a default strongest
signal first approach in selecting user devices or nodes to connect to the
access point or overlapping access points. This standard does not make
provisions for even distribution of load and hence the quality of service and
the throughput in areas of congestion would be reduced. This article brings
forward two algorithms used in load balancing and they include round-robin
technique and the weighted round-robin technique to be used in the
simulation of the distribution of the load amongst the access points with the
results collated and compared to clearly show which algorithm is best suited
to be used as a standard for access point load distribution.
DWDM-RAM: Enabling Grid Services with Dynamic Optical NetworksTal Lavian Ph.D.
Advances in Grid technology enable the deployment of data-intensive distributed applications, which require moving Terabytes or even Petabytes of data
between data banks. The current underlying networks cannot provide dedicated links with adequate end-to-end sustained bandwidth to support the requirements of these Grid applications. DWDM-RAM1 is a novel service-oriented architecture, which harnesses the enormous bandwidth potential of optical networks and demonstrates their on-demand nsage on the OMNlnet. Preliminary experiments suggest that dynamic optical networks, such as the OMNlnet, are the ideal option for transferring such massive amounts of data. DWDM-RAM incorporates an OGSI/OGSA compliant service interface and will promote greater convergence between dynamic optical networks and data intensive Grid computing.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
A study on qos aware routing in wireless mesh networkeSAT Journals
Abstract Wireless Mesh Networks (WMN) mainly consists of mesh clients and mesh routers. It is mainly effective as an economically successful and a promising technology for providing wireless broadband services. Mesh routers basically form the backbone of the network (WMN) and hence has the minimum mobility. They interconnect the mesh clients and the wireline backbone network. In order to approach the wireline level or same or near QoS, the Wireless Mesh Networks must be QoS aware. In this paper we have worked on the effect of variable transmission power to achieve the desired SNR and to maximize the number of active links at the same time for each links in the network and analyze different approaches to maintain the QoS routing of a wireless mesh network. Index Terms:AODV; AQOR; DSDV; MANET; OPNET; QOS; WMN
Adhoc mobile wireless network enhancement based on cisco devicesIJCNCJournal
Adhoc wireless networks become one of the most researchable areas in the studying of routing protocols depending on the Open System Interconnection (OSI Model). This paper use Cisco devices as a reference to enhance the performance of the network. This enhancement will be due to high processing, reliability, average cost, power consumption and accessibility. The aim of this research not only to get the cost down, it also to choose a time to time device to process the data as rapid as it can. Using NAT, Access List and DHCP protocols defined in Cisco (Graphical Unit Interface) GUI of the (Command Line Interface) CLI, the task can be made.
IEEE 802 Standard Network’s Comparison under Grid and Random Node Arrangement...Eswar Publications
The IEEE 802 standard well-known as 802.11 called as Wi-Fi network, 802.15.4 called as ZigBee or sensor network and 802.15.1 called as Bluetooth network. The network such as ZigBee, Bluetooth and Wi-Fi works in 2.4 GHz ISM band. All the above networks works in same ISM band of 2.4 GHz, but the performance of the network varies. The performance of simulation depends upon the coverage area, data rates, and power consumption in each network. The heterogeneous network performances is evaluated with static and mobility model in random and grid node placement by varying the traffic loads of one CBR and with five CBR for each network. The
simulation result is compared in terms of jitter, average end to end delay and throughput to analyze the network performance in the 2.4 GHz frequency band. IEEE 802.11 network shows the low jitter and delay value with high throughput compared with sensor network.
Interface method and system for accessing inner layers of a network protocolTal Lavian Ph.D.
A method of performing network communications includes receiving a datagram for transmitting information over a network, selecting a layer in a network protocol stack to establish communication over the network using an inner layer application programming interface (IL API), establishing an inner layer socket at the selected network layer using the IL API without accessing other layers in the layered network protocol stack, and transmitting the datagram packet over the selected layer using the inner layer socket.
https://www.google.com/patents/US6845397?dq=US+6845397&hl=en&sa=X&ei=zrxTVJv8C-GsmAXaoYLwCQ&ved=0CB0Q6AEwAA
Similar to Content-aware dynamic network resource allocation (20)
A system for providing ultra low phase noise frequency synthesizers using Fractional-N PLL (Phase Lock Loop), Sampling Reference PLL and DDS (Direct Digital Synthesizer). Modern day advanced communication systems comprise frequency synthesizers that provide a frequency output signal to other parts of the transmitter and receiver so as to enable the system to operate at the set frequency band. The performance of the frequency synthesizer determines the performance of the communication link. Current days advanced communication systems comprises single loop Frequency synthesizers which are not completely able to provide lower phase deviations for errors (For 256 QAM the practical phase deviation for no errors is 0.4-0.5°) which would enable users to receive high data rate. This proposed system overcomes deficiencies of current generation state of the art communication systems by providing much lower level of phase deviation error which would result in much higher modulation schemes and high data rate.
A system for providing ultra low phase noise frequency synthesizers using Fractional-N PLL (Phase Lock Loop), Sampling Reference PLL and DDS (Direct Digital Synthesizer). Modern day advanced communication systems comprise frequency synthesizers that provide a frequency output signal to other parts of the transmitter and receiver so as to enable the system to operate at the set frequency band. The performance of the frequency synthesizer determines the performance of the communication link. Current days advanced communication systems comprises single loop Frequency synthesizers which are not completely able to provide lower phase deviations for errors (For 256 QAM the practical phase deviation for no errors is 0.4-0.5°) which would enable users to receive high data rate. This proposed system overcomes deficiencies of current generation state of the art communication systems by providing much lower level of phase deviation error which would result in much higher modulation schemes and high data rate.
Systems and methods to support sharing and exchanging in a networkTal Lavian Ph.D.
Embodiments of the invention provide for providing support for sharing and exchanging in a network. The system includes a memory coupled to a processor. The memory includes a database comprising information corresponding to first users and the second users. Each of the first users and the second users are facilitated for sharing or exchanging activity, service or product, based on one or more conditions corresponding thereto. Further, the memory includes one or more instructions executable by the processor to match each of the first users to at least one of the second users. Furthermore, the instructions may inform each of the first users about the match with the at least one of the second users when all the conditions are met by the at least one second user based on the information corresponding to each of the second users.
Systems and methods for visual presentation and selection of IVR menuTal Lavian Ph.D.
Embodiments of the invention provide a system for generating an Interactive Voice Response (IVR) database, the system comprising a processor and a memory coupled to the processor. The memory comprising a list of telephone numbers associated with one or more destinations implementing IVR menus, wherein the one or more destinations are grouped based on a plurality of categories of the IVR menus. Further the memory includes instructions executable by said processor for automatically communicating with the one of more destinations, and receiving at least one customization record from said at least one destination to store in the IVR database.
Various embodiments allow Grid applications to access resources shared in communication network domains. Grid Proxy Architecture for Network Resources (GPAN) bridges Grid services serving user applications and network services controlling network devices through proxy functions. At times, GPAN employs distributed network service peers (NSP) in network domains to discover, negotiate and allocate network resources for Grid applications. An elected master NSP is the unique Grid node that runs GPAN and represents the whole network to share network resources to Grids without Grid involvement of network devices. GPAN provides the Grid Proxy service (GPS) to interface with Grid services and applications, and the Grid Delegation service (GDS) to interface with network services to utilize network resources. In some cases, resource-based XML messaging can be employed for the GPAN proxy communication.
A system for providing ultra low phase noise frequency synthesizers using Fractional-N PLL (Phase Lock Loop), Sampling Reference PLL and DDS (Direct Digital Synthesizer). Modern day advanced communication systems comprise frequency synthesizers that provide a frequency output signal to other parts of the transmitter and receiver so as to enable the system to operate at the set frequency band. The performance of the frequency synthesizer determines the performance of the communication link. Current days advanced communication systems comprises single loop Frequency synthesizers which are not completely able to provide lower phase deviations for errors (For 256 QAM the practical phase deviation for no errors is 0.4-0.5°) which would enable users to receive high data rate. This proposed system overcomes deficiencies of current generation state of the art communication systems by providing much lower level of phase deviation error which would result in much higher modulation schemes and high data rate.
Systems and methods for electronic communicationsTal Lavian Ph.D.
Embodiments of the invention provide a system for enhancing user interaction with the Internet of Things. The system includes a processor, and a memory coupled to the processor. The memory includes a database having one or more options corresponding to each of the Internet of Things. The memory further includes instructions executable by the processor to share at least one of the one or more options with one or more users of the things. Further, the instructions receive information corresponding to selection of the at least one option by the one or more users. Additionally, the instructions update the database based on the selection of the at least one option by the one or more users. Further, a device for enhancing interaction with the things is also disclosed.
A system for providing ultra low phase noise frequency synthesizers using Fractional-N PLL (Phase Lock Loop), Sampling Reference PLL and DDS (Direct Digital Synthesizer). Modern day advanced communication systems comprise frequency synthesizers that provide a frequency output signal to other parts of the transmitter and receiver so as to enable the system to operate at the set frequency band. The performance of the frequency synthesizer determines the performance of the communication link. Current days advanced communication systems comprises single loop Frequency synthesizers which are not completely able to provide lower phase deviations for errors (For 256 QAM the practical phase deviation for no errors is 0.4-0.5°) which would enable users to receive high data rate. This proposed system overcomes deficiencies of current generation state of the art communication systems by providing much lower level of phase deviation error which would result in much higher modulation schemes and high data rate.
A system for providing ultra low phase noise frequency synthesizers using Fractional-N PLL (Phase Lock Loop), Sampling Reference PLL and DDS (Direct Digital Synthesizer). Modern day advanced communication systems comprise frequency synthesizers that provide a frequency output signal to other parts of the transmitter and receiver so as to enable the system to operate at the set frequency band. The performance of the frequency synthesizer determines the performance of the communication link. Current days advanced communication systems comprises single loop Frequency synthesizers which are not completely able to provide lower phase deviations for errors (For 256 QAM the practical phase deviation for no errors is 0.4-0.5°) which would enable users to receive high data rate. This proposed system overcomes deficiencies of current generation state of the art communication systems by providing much lower level of phase deviation error which would result in much higher modulation schemes and high data rate.
Radar target detection system for autonomous vehicles with ultra-low phase no...Tal Lavian Ph.D.
An object detection system for autonomous vehicle, comprising a radar unit and at least one ultra-low phase noise frequency synthesizer, is provided. The radar unit configured for detecting the presence and characteristics of one or more objects in various directions. The radar unit may include a transmitter for transmitting at least one radio signal; and a receiver for receiving the at least one radio signal returned from the one or more objects. The ultra-low phase noise frequency synthesizer may utilize Clocking device, Sampling Reference PLL, at least one fixed frequency divider, DDS and main PLL to reduce phase noise from the returned radio signal. This proposed system overcomes deficiencies of current generation state of the art Radar Systems by providing much lower level of phase noise which would result in improved performance of the radar system in terms of target detection, characterization etc. Further, a method for autonomous vehicle is also disclosed.
Various embodiments allow Grid applications to access resources shared in communication network domains. Grid Proxy Architecture for Network Resources (GPAN) bridges Grid services serving user applications and network services controlling network devices through proxy functions. At times, GPAN employs distributed network service peers (NSP) in network domains to discover, negotiate and allocate network resources for Grid applications. An elected master NSP is the unique Grid node that runs GPAN and represents the whole network to share network resources to Grids without Grid involvement of network devices. GPAN provides the Grid Proxy service (GPS) to interface with Grid services and applications, and the Grid Delegation service (GDS) to interface with network services to utilize network resources. In some cases, resource-based XML messaging can be employed for the GPAN proxy communication.
Method and apparatus for scheduling resources on a switched underlay networkTal Lavian Ph.D.
A method and apparatus for resource scheduling on a switched underlay network (18) enables coordination, scheduling, and scheduling optimization to take place taking into account the availability of the data and the network resources comprising the switched underlay network (18). Requested transfers may be fulfilled by assessing the requested transfer parameters, the availability of the network resources required to fulfill the request, the availability of the data to be transferred, the availability of sufficient storage resources to receive the data, and other potentially conflicting requested transfers. In one embodiment, the requests are under-constrained to enable transfer scheduling optimization to occur. The under-constrained nature of the requests enable transfer scheduling optimization to occur. The under-constrained nature of the requests enables requests to be scheduled taking into account factors such as transfer priority, transfer duration, the amount of time it has been since the transfer request was submitted, and many other factors.
Dynamic assignment of traffic classes to a priority queue in a packet forward...Tal Lavian Ph.D.
An apparatus and method for dynamic assignment of classes of traffic to a priority queue. Bandwidth consumption by one or more types of packet traffic received in the packet forwarding device is monitored to determine whether the bandwidth consumption exceeds a threshold. If the bandwidth consumption exceeds the threshold, assignment of at least one type of packet traffic of the one or more types of packet traffic is changed from a queue having a first priority to a queue having a second priority.
Method and apparatus for using a command design pattern to access and configu...Tal Lavian Ph.D.
An XML accessible network device is capable of performing functions in response to an XML encoded request transmitted over a network. It includes a network data transfer service, coupled to a network, that is capable of receiving XML encoded requests from a client also connected to the network. A service engine is capable of understanding and parsing the XML encoded requests according to a corresponding DTD. The service engine further instantiates a service using parameters provided in the XML encoded request and launches the service for execution on the network device in accordance with a command design parameter. A set of device APIs interacts with hardware and software on the network device for executing the requested service on the network device. If necessary, a response is further collected from the device and provided to the client in a response message.
Embodiments of the invention provide means to the users of the system to provide ratings and corresponding feedback for enhancing the genuineness in the ratings. The system includes a memory coupled to a processor. The memory includes one or more instructions executable by the processor to enable the users of the system to rate each other based on at least one of sharing, exchanging, and selling one of activity, service or product. The system may provide a mechanism to encourage genuineness in ratings provided by the users. Furthermore, the instructions facilitate the rating receivers to provide feedbacks corresponding to the received ratings. The feedback includes accepting or objecting to a particular rating. Moreover, the memory includes instructions executable by the processor to enable the system to determine genuineness of an objection raised by a rating receiver.
Embodiments of the present invention provide a system for enhancing reliability in computation of ratings provided by a user over a social network. The system comprises of a processor and a memory coupled to the processor. The memory further comprises a rater score database, a satisfaction database, a social network registration database, a user profile database, and a plurality of instruction executable by the processor. Said instructions in the memory are enabled to accept a message from at least one user wherein said message comprises a satisfaction score associated with at least one service provider and to retrieve a rater score associated with said at least one user from said rater score database. Further, the memory includes instructions in order to compute a new satisfaction score based on said rater score and said satisfaction score and update said satisfaction database to include said new satisfaction score. In a similar manner, the new satisfaction score can be computed based upon the information stored in the social network registration database and user profile database.
Systems and methods for visual presentation and selection of ivr menuTal Lavian Ph.D.
Embodiments of the invention provide a system for generating an Interactive Voice Response (IVR) database, the system comprising a processor and a memory coupled to the processor. The memory comprising a list of telephone numbers associated with one or more destinations implementing IVR menus, wherein the one or more destinations are grouped based on a plurality of categories of the IVR menus. Further the memory includes instructions executable by said processor for automatically communicating with the one of more destinations, and receiving at least one customization record from said at least one destination to store in the IVR database.
A system for providing ultra low phase noise frequency synthesizers using Fractional-N PLL (Phase Lock Loop), Sampling Reference PLL and DDS (Direct Digital Synthesizer). Modern day advanced communication systems comprise frequency synthesizers that provide a frequency output signal to other parts of the transmitter and receiver so as to enable the system to operate at the set frequency band. The performance of the frequency synthesizer determines the performance of the communication link. Current days advanced communication systems comprises single loop Frequency synthesizers which are not completely able to provide lower phase deviations for errors (For 256 QAM the practical phase deviation for no errors is 0.4-0.5°) which would enable users to receive high data rate. This proposed system overcomes deficiencies of current generation state of the art communication systems by providing much lower level of phase deviation error which would result in much higher modulation schemes and high data rate.
A system for providing ultra low phase noise frequency synthesizers using Fractional-N PLL (Phase Lock Loop), Sampling Reference PLL and DDS (Direct Digital Synthesizer). Modern day advanced communication systems comprise frequency synthesizers that provide a frequency output signal to other parts of the transmitter and receiver so as to enable the system to operate at the set frequency band. The performance of the frequency synthesizer determines the performance of the communication link. Current days advanced communication systems comprises single loop Frequency synthesizers which are not completely able to provide lower phase deviations for errors (For 256 QAM the practical phase deviation for no errors is 0.4-0.5°) which would enable users to receive high data rate. This proposed system overcomes deficiencies of current generation state of the art communication systems by providing much lower level of phase deviation error which would result in much higher modulation schemes and high data rate.
Systens and Methods For Electronic CommunicationTal Lavian Ph.D.
Embodiments of the invention provide a system for enhancing user interaction with the Internet of Things in a network. The system includes a processor, and a memory. The memory includes a database including one or more options corresponding to each of the Internet of Things. Further, the memory includes instructions executable by the processor for providing the options to a user for enabling the user to select at least one option therefrom. Further, the instructions create a visual menu based on information corresponding to selection of the at least one option. The visual menu includes one or more objects corresponding to the Internet of Things. Furthermore, the instructions receive a rating for the visual menu from one or more second users of the Internet of Things. Additionally, instructions customize the visual menu based on the received rating.
Building a Raspberry Pi Robot with Dot NET 8, Blazor and SignalR - Slides Onl...Peter Gallagher
In this session delivered at Leeds IoT, I talk about how you can control a 3D printed Robot Arm with a Raspberry Pi, .NET 8, Blazor and SignalR.
I also show how you can use a Unity app on an Meta Quest 3 to control the arm VR too.
You can find the GitHub repo and workshop instructions here;
https://bit.ly/dotnetrobotgithub
MATHEMATICS BRIDGE COURSE (TEN DAYS PLANNER) (FOR CLASS XI STUDENTS GOING TO ...PinkySharma900491
Class khatm kaam kaam karne kk kabhi uske kk innings evening karni nnod ennu Tak add djdhejs a Nissan s isme sniff kaam GCC bagg GB g ghan HD smart karmathtaa Niven ken many bhej kaam karne Nissan kaam kaam Karo kaam lal mam cell pal xoxo
MATHEMATICS BRIDGE COURSE (TEN DAYS PLANNER) (FOR CLASS XI STUDENTS GOING TO ...
Content-aware dynamic network resource allocation
1. US007944827B2
(12) United States Patent (10) Patent N0.2 US 7,944,827 B2
Wang et al. (45) Date of Patent: May 17, 2011
(54) CONTENT-AWARE DYNAMIC NETWORK 6,594,260 B1* 7/2003 Avianiet a1. ................ .. 370/389
RESOURCE ALLOCATION 6,631,134 B1* 10/2003 Zadikian et a1. .. 370/395.21
6,665,702 B1* 12/2003 Zisapel et a1. .......... .. 718/105
. _ 6,687,228 B1 * 2/2004 Fichou et a1. .. 370/232
(75) Inventors: Phll_Y-WangsNePean (CA), T31 6,850,980 131* 2/2005 Gourlay ,,,,,,, n 709/226
Lavlan, Sunnyvale, CA (Us); Ramesh 6,856,627 B2 * 2/2005 Saleh et a1. 370/397
Durairaj, Santa Clara, CA (US); 6,876,668 B1 * 4/2005 Chawla et a1. 370/468
Richard Brand’ palo Alto’ CA (Us); 6,950,391 B1 * 9/2005 Zadikian et a1. 370/219
- - 2002/0067726 A1 * 6/2002 Ganesh et a1. ....... .. 370/392
Franc” Travostmo’ Arhngton’ MA (Us) 2002/0087699 A1 * 7/2002 Karagiannis et a1. 709/227
_ _ _ 2002/0136204 Al* 9/2002 Chen et a1. ....... .. 370/352
(73) Asslgneei AW)’a 1119-, Basklng Rldges NJ (Us) 2002/0150093 A1 * 10/2002 on 61 a1. 370/389
2003/0165139 A1 * 9/2003 Chen et a1. .. 370/392
( * ) Notice: Subject to any disclaimer, the term ofthis 2003/0169749 A1* 9/2003 Huang et a1. ..... .. 370/401
patent is extended or adjusted under 35 2003/0210694 A1* 11/2003 Jayaraman et a1. ......... .. 370/392
U S C 154(1)) by 7 days 2005/0185654 A1 * 8/2005 Zadikian et a1. ....... .. 370/395.2l
* cited by examiner
(21) App1.N0.: 12/460,235
Primary Examiner * Hong Cho
(22) Filed: Jul- 14-1 2009 (74) Attorney, Agent, or Firm * Maldjian Law Group LLC;
John P. Maldjian, Esq.
(65) Prior Publication Data
Us 2009/0279562 A1 Nov. 12, 2009 (57) ABSTRACT
_ _ Network resources allocated for particular application tra?ic
Related U‘s‘ Apphcatlon Data are aware of the characteristics of L4+ content to be transmit
(63) Continuation of application No, 10/286,591, ?led on ted. One embodiment of the invention realiZes network
Nov. 1, 2002, now Pat. No. 7,580,349. resource allocation in terms of three intelligent modules,
(60) Provisional application NO 60/336 4 69 ?led on NOV gateway, provisioning and classi?cation. A gateway module
2 2001 ' ’ ’ ' exerts network control functions in response to application
’ ' requests for network resources. The network control func
(51) Int CL tions include tra?ic path setup, bandwidth allocation and so
H04L 12/26 (200601) on. Characteristics of the content are also speci?ed in the
H041, 12/56 (200601) received application network resource requests. Under
(52) US. Cl. .................. .. 370/230; 370/395.41; 370/401 request Of the gateway module, a Provisioning module a110
(58) Field of Classi?cation Search ................ .. 370/216, Gates network resources Such as bandwidth in Optical net
370/218’ 228, 230, 389, 392, 39521, 3952’ works and edge devices as well. An optical network resource
370/39 5 _4 1, 39 5 _43, 401 allocation leads to a provisioning optical route. Under request
See application ?le for complete Search history, of the gateway module, a classi?cation module differentiates
applications tra?ic according to content speci?cations, and
(56) References Cited thus creates and applies content-aware rule data for edge
U.S. PATENT DOCUMENTS
devices to forward content-speci?ed tra?ic towards respec
tive provisioning optical routes.
5,893,911 A * 4/ 1999 Piskiel et a1. ............... .. 707/694
5,995,503 A * 11/1999 Crawley et a1. ............. .. 370/351 22 Claims, 4 Drawing Sheets
I _________________________________________ __6A50_BITCTN____'
I 5_ 8pm 6. INTRA-CADOBA CONTROL UNIT BOXES 1
: PROCESS COMMUNICATIONS *CONTROL UNIT (MASTER)|
-GATEWAY |
| CONTROL UNIT CONTROL UNIT CONTROL UNIT _
: (MASTER) SLAVE) "6 11B (SLAVE clPR°,sV§§%X'T'fgN I
| 102 m ;@ a» "(a mu m i-CONTROL UNIT (SLAVE) '
L _______________ _ T _____________ _ 7 ____~°_R9as19wu9_____I
4. SIGNAL 8. OPTICAL SETUP 120
TO CADOBA -,’,-,LT°%’,1TE"T 112‘ 1,
105 ............ 114
104 ° = 1m
'g-Egg'gfs'é OPTIcALDEVIcEINSEJKVEQrRS?" OPTICAI-DEVICE
3. BW SIGNAL
FOR CLIENT
106
PC
SLIDE SERVER
2. CLIENT
ACCEPT
OPTICAL
SLIDE CLIENT
2.
3.
4.
5. US. Patent May 17, 2011 Sheet 4 014 US 7,944,827 B2
éMicxEzlmlSztL
MES
lS1$9vii5gvaL8nT2c:i1 i:
681a
15$58212
2M,;
E902m52
WE2305
80E0%2 25 0
#1056
8Q50:5 89%55g
ATm9
i930
/A2525/6.
0.P152 %085 E05m %8i 5%.
$2.S2‘V1 E 1V 1QQ 1.. 8.M1ml.um!“.m “. m..1.: / .." . |l.
m?Eyw0wvw0/8 <
NNE#0: 50 .
‘.@1.PMu.92 ..5M6 .50“’ 0 1 .0‘1ow 2“1u01 F Sh1.L0w 18a.‘m :
..AM‘..éi,z. i w a . .5 ..5 % ..230
$095
@w5#w:é1?2é
6. US 7,944,827 B2
1
CONTENT-AWARE DYNAMIC NETWORK
RESOURCE ALLOCATION
CROSS REFERENCE TO RELATED
APPLICATIONS
This application is a continuation of US. patent applica
tion Ser. No. 10/286,591, ?ledNov. 1, 2002 now US. Pat. No.
7,580,349 which claims priority to US. Provisional Applica
tion No. 60/336,469, ?led Nov. 2, 2001 . The entire contents of
which are speci?cally incorporated herein by reference.
BACKGROUND OF THE INVENTION
The present invention relates to content-aware dynamic
network resource allocation in a network such as the Internet
and in one embodiment to content-aware dynamic optical
bandwidth allocation.
The Internet is a data transport network including legacy
networks and optical networks. The legacy networks exist at
the outer edge of the Internet and use copper wires to connect
client systems and electronic routers/switches. The optical
networks form the backbone of the Internet and use ?bers to
connect optical cross connects or switches. Between the
legacy networks and optical networks are edge devices,
which are electro-optic.
Well-developed optical transport technology brings an
ever-increasing amount of bandwidth to the Internet. How
ever, with conventional network technology, end clients have
little ability to exploit optical network resources for their own
purposes. As a result, there is abundant bandwidth available in
the backbone of the Internet. In fact, a number of emerging
Internet applications such as storage area network and
streaming media intend to take greater advantage of the abun
dant bandwidth. These applications are dynamically initiated
and provide a variety of content data over the IP protocol.
More speci?cally, conventional network technology has
the following drawbacks.
1. Static Provisioning of Optical Links
Conventional network resource provisioning establishes
?xed links to connect customer networks. For example, the
optical provisioning is static, ?xed bandwidth, and usually
takes a long time, e.g., on the order of a month, because it
involves inter-network-provider service negotiations and is
accomplished manually.
2. Cost of the Optical Link Bandwidth is Not Divided
Among Many Users and Provisioning Bandwidth is Not Flex
ible
Conventionally, provisioning an optical link (e.g., OC-48)
means that a customer owns the full link bandwidth (i.e., 2.5
Gbps). This customer is fully responsible for the cost of the
optical link. The cost is signi?cant and the optical link band
width use is often inef?cient. On the other hand, a number of
users can share an optical link but they are not guaranteed a
speci?ed portion of the bandwidth.
3. Existing Signaling Protocols Not Supported by Optical
Gear
Applications can send their bandwidth requirements to the
network using existing Internet signaling protocols such as
Resource Reservation Protocol (RSVP). These protocols are
at the Internet protocol (IP) layer, i.e., the layer 3 (L3), of the
ISO Open System Interconnection reference model and
require hardware support at network devices. However, opti
cal devices perform data transport at the physical (L1) or the
link (L2) layer and thus application signals are not processed
in optical networks.
20
25
30
35
40
45
50
55
60
65
2
4. Optical Bandwidth Provisioning is Not Aware of the
Content of Application Traf?c
Conventional bandwidth provisioning is based on the TCP/
IP characteristics of tra?ic ?ow, which include IP protocol
types, source and destination IP addresses, and TCP/UDP
source and destination port numbers of tra?ic packets. Such
provisioning is limited for L4 or higher-layer content differ
entiation because a client may use applications that deal with
multiple content traf?c streams at the same time. For
example, audio and video applications employ different types
of content and have different bandwidth requirements. On the
other hand, optical networks do not support content differen
tiation because optical devices do not process IP packets.
Prior attempts to solve the problems described above
include the following.
1. Intserv/RSVP
RSVP is the Intserv ReSerVation Protocol under the Inter
net Engineering Task Force (IETF) and is used by applica
tions to signal the network for bandwidth reservations for IP
traf?c. However, RSVP is thought to be not scalable because
backbone routers cannot maintain the ?ow status for all
reserved tra?ic passing by. In addition, optical gear does not
accept RSVP signals from end applications because RSVP is
an L3 IP protocol.
2. ATM
Within an asynchronous transfer mode (ATM) network,
applications can invoke the ATM user-network interface
(UNI) to establish virtual circuits with particular bandwidth
assignments. However, the ATM UNI is not applicable for
non-ATM applications.
3. GMPLS
GMPLS (Generalized MultiProtocol Label Switching) is a
known protocol of tra?ic path establishment for next-genera
tion optical network. GMPLS is applied with the emerging
ASTN (Automatic Switch Transport Network) technology.
However, GMPLS does not support granular bandwidth
requests from individual clients nor does it allocate band
width based on the content of application traf?c.
Thus, there remains a need to more fully and effectively
exploit the abundant bandwidth existing at optical networks.
SUMMARY OF THE INVENTION
The present invention relates to content-aware dynamic
network resource allocation. In one embodiment the network
resource of interest is optical bandwidth and this embodiment
is termed content-aware dynamic optical bandwidth alloca
tion (CADOBA). Although the following often refers to the
CADOBA embodiment, those of skill in the art will appreci
ate that one can use the present invention to allocate other
network resources in addition to bandwidth. CADOBA
enables clients at end legacy networks to manipulate the
network resources of backbone optical networks for their own
purposes. One embodiment of the invention provides three
intelligent mechanisms: 1) a gateway mechanism operative to
transform application requests in an application transparent
way to intelligent network control; 2) a provisioning mecha
nism operative to perform optical link or lightpath setup and
bandwidth allocation; and 3) a classi?cation mechanism
operative to differentiate application tra?ic based on L4+
content characteristics and to forward content streams to the
provisioned routes (optical links or lightpaths).
Another embodiment of the invention provides a method
for performing content-aware optical bandwidth allocation
over a network including an edge device and an optical con
trol unit. Typically networks include client systems, legacy
networks, optical networks and edge devices connecting the
7. US 7,944,827 B2
3
legacy networks with the optical networks. Both legacy and
optical networks have network control units. A control unit
can be a part of a network device, or it can be an associated
device. Both legacy and optical networks have network
domains. An ISP network is an example of a network domain.
All network devices in a network domain are managed in a
similar way.
The method includes: receiving signal tra?ic of applica
tions from the edge device; determining a network resource
request for a particular application data tra?ic with content
speci?cation from a received signal; communicating with an
optical control unit to allocate a network resource to provide
a network resource provisioned route, and creating rule data
for the edge device to forward content-speci?c application
tra?ic onto the network resource provisioned route.
Still another embodiment of the invention provides a sys
tem for performing content aware optical bandwidth alloca
tion over a network including an edge device and an optical
control unit. The system includes a gateway module, a pro
visioning module in communication with the gateway mod
ule and a classi?cation module in communication with the
gateway module.
The gateway module, in communication with the edge
device, receives signal tra?ic of applications from the edge
device and determines, from the signal traf?c, a bandwidth
request associated with a content-speci?ed tra?ic.
The provisioning module receives a provisioning request
from the gateway module regarding the bandwidth request for
speci?ed content tra?ic, and communicates with an optical
control unit to allocate optical bandwidth to provide a provi
sioned optical route. The provisioning module also commu
nicates with the edge device to allocate the appropriate band
width for the content-speci?ed tra?ic forwarding towards a
provisioned optical route;
The classi?cation module receives a content classi?cation
request from the gateway module, and, based on the classi?
cation request, creates a content-aware traf?c routing rule for
the edge device to forward speci?ed content traf?c to the
provisioned bandwidth route.
These and other features of the invention are more fully set
forth with reference to the following detailed description and
the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
The foregoing and other objects, features, and advantages
of the invention will be apparent from the following descrip
tion and apparent from the accompanying drawings, in which
like reference characters refer to the same parts.
FIG. 1 shows an example of a network incorporating one
embodiment of a CADOBA system according to the inven
tion;
FIG. 2 shows a breakdown of a network device, such as the
content switch shown in FIG. 1, into a transport unit and a
control unit;
FIG. 3 shows CADOBA subsystems that make up one
embodiment of the CADOBA system, the CADOBA system
residing on a control unit of FIG. 1;
FIG. 4 shows an interaction between the gateway sub
system of FIG. 3 and a transport unit of an edge device;
FIG. 5 shows an interaction from a client application, a
transport unit of an edge device to the CADOBA subsystems
of FIG. 3;
FIG. 6 shows an interaction between the provisioning sub
system of FIG. 3 and elements of legacy and optical networks
of FIG. 1;
20
25
30
35
40
45
50
55
60
65
4
FIG. 7 shows an interaction between the classi?cation sub
system of FIG. 3 and an edge device such as the electronic
content switch of FIG. 1;
FIG. 8 shows the ?ow of application tra?ic through a
portion of a network after operation of one embodiment of a
CADOBA system according to the invention; and
FIG. 9 shows another embodiment of a large network
incorporating one embodiment of a CADOBA system
according to the invention.
DETAILED DESCRIPTION OF THE
ILLUSTRATED EMBODIMENTS
The present invention relates to content-aware dynamic
network resource allocation. In one embodiment the network
resource of interest is optical bandwidth and this embodiment
is termed content-aware dynamic optical bandwidth alloca
tion (CADOBA). With reference to FIG. 1, an example of a
network 100 incorporating one embodiment of a CADOBA
system according to the invention includes a client 108 com
municating with a server 106. The server 106 communicates
with an edge device 104, which is an electronic content
switch. The edge device has a ?ltering and forwarding com
ponent 105. The edge device 104 in turn communicates with
a master control unit 102. The master control unit 102 com
municates with optical control units 116, 118. The optical
control units 116, 118 in turn communicate with optical
device(s) 112, 114.
Thus, the CADOBA system can reside on control units.
That is, in one embodiment each control unit runs a
CADOBA system respectively and they work together
through intra-CADOBA communications.
Tra?ic refers to the data of an application traveling across
a network, and signal tra?ic refers to the data of network
resource requests of applications signaling to a network. Con
tent refers to the L4 or high-layer (L4+) data carrying through
the IP protocol, i.e., the payload of an IP packet. Typical
content speci?cations include TCP/UDP headers, message
identi?ers such as HTTP (Hypertext Transfer Protocol) head
ers and RTSP (Real Time Streaming Protocol) method tags,
and other L4+ characteristics.
With reference to FIGS. 1 and 2, a network device, such as
the edge device 104, generally consists of a control unit 124
and a transport unit 122. The transport unit transports network
traf?c from an ingress interface to an egress interface. An
ingress interface connects to one egress interface of an up
stream device and an egress interface connects to one ingress
interface of a down-stream device. The control unit does not
forward any packet, rather it controls how the transport unit
forwards traf?c from one ingress interface to one egress inter
face. To perform intelligent network control, in FIG. 1
CADOBA facilitates communication between the edge
device 104 and an external control unit 102, and between
optical devices 112, 114 and external control units 116, 118.
With reference to FIG. 1, in one embodiment, a CADOBA
system resides on each external network control unit, i.e., the
edge device control unit 102 and optical device control units
116, 118A network consisting of end, access, metro core and
long-haul core networks (See FIG. 9) includes a large number
of network devices. But CADOBA does not need to work
with control units of all these network devices. Rather
CADOBA works with two kinds of control units. One kind of
control unit is the control unit 102 of the edge device 104.
Using the control unit of the edge device, CADOBA causes
the edge device 104 to route content-speci?c tra?ic from a
legacy network domain to an optical network domain. The
other kind of control unit is the control unit 116, 118 for
8. US 7,944,827 B2
5
respective entry optical devices. CADOBA controls these
optical control units to allocate bandwidth for particular con
tent tra?ic ?ows over optical networks.
With reference to FIG. 3, one embodiment of a CADOBA
system includes a gateway module 126, a provisioning mod
ule 128, and a classi?cation module 130. All three modules
reside on a network control unit of an edge device while a
provisioning module also resides on an entry optical device
control unit. Thus, in one embodiment, as shown in FIG. 1,
while the control unit slave boxes run the provisioning mod
ule or subsystem to set up optical lightpaths, the control unit
master box runs all three subsystems or modules to interact
with the control unit slave boxes and to apply control to an
edge device.
In operation, and with reference to FIG. 4, one embodiment
of a CADOBA system according to the invention initially
uses the gateway module 126 to cause the transport unit of an
edge device 104 to ?lter application tra?ic and to forward
signal tra?ic to the gateway module. With reference to FIGS.
1 and 5, a server 106 sends a request 136, which is routed by
the network to the transport unit 124 of an edge device 104.
The edge device 104, based on the gateway module’s prior
instructions, redirects the signal traf?c to the gateway module
126 at master control unit 102. The CADOBA system applies
signal processing 132 to the signal tra?ic to obtain network
resource requirements with content tra?ic characteristics.
Based on the user requirements from applications, the
CADOBA system performs provisioning 128 and classi?ca
tion 130 to accomplish network resource (e. g., optical band
width) allocation 134. In one embodiment, a bandwidth
request is associated with a speci?ed content stream of an
application. An application may have any number of indi
vidual traf?c streams. But that application will typically
request bandwidth allocation only for some content-speci?ed
tra?ic streams. Moreover, an application can make a request
for a group of tra?ic streams that have the identical content
tra?ic characteristics. In one embodiment, the gateway mod
ule extracts content characteristics from the signal tra?ic and
passes them to the classi?cation module. In one embodiment,
the transport to the gateway communication is internal net
work communication such as the Ethernet tunnel communi
cation. The communication from the gateway subsystem to
the provisioning subsystem is network-based intra-CA
DOBA communication similar to inter-process communica
tion (IPC) on the same control unit or remote-procedure call
(RPC) between two control units. Once CADOBA achieves
network resource allocation, data from the requested appli
cation can begin to ?ow across the provisioned route.
With reference to FIG. 6, the provisioning module 128
typically performs bandwidth allocation 138 by interacting
with multiple control units. For example, the provisioning
module 128 can achieve bandwidth allocation 138 in the
optical network domain 140 by using the user-to-network
interface (UNI) technology to interface with a control unit
that in turn controls an optical switch 146 to con?gure an
optical link or lightpath. Similarly, the provisioning module
128 can achieve bandwidth allocation 138 in the legacy net
work domain 142 by an open network service platform such
as OPENET, to interface with a control unit that in turn
controls an electronic switch 144 to con?gure a physical
transport port. On the optical network, the provisioning mod
ule either sets up a new optical link/lightpath or allocates a
bandwidth portion of an existing link/lightpath. On the edge
device, the provisioning module knows which physical port
connects to the optical bandwidth router and allocates a por
tion of this port bandwidth. When the provisioning module
20
25
30
35
40
45
50
55
60
65
6
completes the bandwidth allocation on both optical network
and the edge device, it returns the results to the gateway
module.
With reference to FIGS. 1 and 7, the classi?cation module
130 con?gures a route for speci?ed content 148 so that the
content traf?c ?ows toward a provisioned lightpath. The clas
si?cation module 130 communicates the con?gured route to
a legacy control device 150 such as the control unit 102 in
FIG. 1, which in turn controls an electronic switch 144 such as
an edge device 104 in FIG. 1 to route the content-speci?c
traf?c along the provisioned network resource route. The
classi?cation module receives information about speci?ed
content characteristics and edge device ports from the gate
way module. Then, the classi?cation module creates new
routing rules for the edge device so that the application con
tent traf?c is classi?ed and when necessary redirected from
the original physical port and forwarded to the new port
(towards to the optical bandwidth route). In one embodiment,
the edge device is a content switch. The content switch sup
ports redirecting content streams from a defaulted physical
port to another port according to content-based ?lters. In one
embodiment, content redirection is accomplished in hard
ware.
With reference to FIGS. 1 and 8, after the CADOBA sys
tem has performed content-aware network resource (e.g.,
optical bandwidth) allocation, an electronic switch 144, that
is an edge device 104, at the legacy domain-optical domain
boundary routes the client traf?c 152 to one or more links or
lightpaths of a speci?c optical switch 146. This optical switch
146, in turn, forwards client tra?ic 152 along onto one or more
provisioned optical lightpaths.
With reference to FIG. 9, structurally, the Internet consists
of three types of networks: core networks (WAN), including
metro core 164 and long haul core 170, operated by telecom
munication carriers; access networks (Edge) 162 provided by
ISPs; and end networks (e.g., LANs) set up by application
users or enterprises. End networks include edge devices 154,
104. The metro core 164 can include metro optical switches
166, 168 with OPE. The long-haul core can include long-haul
optical switches 172 with an ASON control unit. The access
network can include metro optical switches 158, 160. As
noted previously, CADOBA provides control over optical
switches via optical gear control units 102, 116, 118, 156.
Thus, CADOBA actually applies user intelligence in control
ling the three types of networks4end, access/edge and opti
cal coreiin a uni?ed way.
In order to appreciate user needs and to allocate optical
resources in real time, CADOBA is focused at the optical
edge (devices) even though it is distributed in the network.
Applications at end networks signal their content speci?ca
tions and network resource requirements to the network using
a well-known signaling protocol such as RSVP.
The CADOBA gateway system residing at a control unit of
an edge device, obtains signal packets by causing the trans
port unit of the edge device to ?lter application tra?ic and to
forward signal tra?ic ?ltered from the application tra?ic to
the gateway module. The edge device can ?lter application
traf?c using L3+ packet ?lters. The signal traf?c includes
network-related parameters, e.g., bandwidth, requests/re
quirements, and content tags/ identi?ers.
The CADOBA provisioning system at a control unit sets up
a new lightpath in an optical network domain for the
requested application tra?ic or manipulates an existing light
path with dynamic bandwidth utiliZation. The provisioning
system also sets up bandwidth con?guration of an edge
device so that application tra?ic can pass through without a
bottleneck to the optical network domain.
9. US 7,944,827 B2
7
The CADOBA classi?cation system at a control unit
causes an edge device, i.e., an electronic switch, to ?lter
application traf?c and to differentiate packets with speci?ed
content characteristics to form content streams. The classi?
cation system further causes the electronic switch to route the
content streams to respective provisioned optical routes.
In one embodiment, the CADOBA processing is dynamic
as application content and requirements may vary at runtime.
In summary, embodiments of the invention can include the
following elements.
Transparent application signaling for content delivery
requirements, including network resources and content
speci?cations
Dynamic signal ?ltering and redirection
Processing signals for network resource requirements and
content characteristics
Network resource (e.g., bandwidth) allocation on demand
Content-based differentiation and routing
Having described the elements of and the operation of
embodiments of the invention, a description of some of the
advantages the invention now follows.
1. Dynamic Provisioning of Optical Links
Embodiments of the invention perform ?exible optical
route or lightpath establishment in optical networks accord
ing to application requests. For example, with certain optical
products, one embodiment of the invention dynamically sets
up an RPR (Resilient Packet Ring) over an existing optical
SONET or DWDM ring, and increases or decreases the RPR
use of the whole optical ring bandwidth.
2. Cost of the Optical Link Bandwidth is Divided Among
Many Users
Embodiments of the invention enable a number of appli
cations to share one optical link or lightpath by identifying the
content of the applications and routing the applications tra?ic
accordingly. For example, by forwarding applications tra?ic
to respectively optical Ethernet ports in an RPR and adjusting
the port rates, embodiments of the invention provide each
application the optical bandwidth it requests. As a result,
these embodiments of the invention increase the return on the
service provider investment by utiliZing the optical transport
capability e?iciently.
3. Provisioning Bandwidth is Flexible and Economic
Embodiments of the invention enable applications to
request bandwidth in small increments, e.g., as small as 1
Mbps, which is a small portion of the whole link bandwidth.
For example, with certain optical Ethernet support, an appli
cation can request a bandwidth from 1 Mbps to 1 Gbps.
4. Application Signal can Achieve Optical Control
The gateway module allows an application to achieve opti
cal control by intercepting application signals at the edge
device and transforming the application signal to a corre
sponding network control. For example, the optical control
signal in turn effects a recon?guration of optical devices,
including, in one embodiment, a reallocation of bandwidth
and establishment of an optical link or light-path.
5. Network Resource, e. g., Bandwidth, Allocation isAware
of Content
The classi?cation module possesses strong content pro
cessing capability that can differentiate application streams
according to their content (L4 or higher layer). For example,
with certain optical gear, application traf?c is classi?ed and
routed to a provisioned optical lightpath by forwarding pack
ets to speci?c optical Ethernet ports. Consequently, content
applications can achieve higher quality. Higher quality appli
cations in turn lead to an increase in demand for bandwidth
and generate more revenue from specialiZed network ser
vices.
20
25
30
35
40
45
50
55
60
65
8
EXAMPLE
In a demonstration of the operation of one embodiment of
the present invention, an optical network included ?bers and
optical devices, a legacy electronic network included PC host
systems, and content switches used as the edge devices bridg
ing the two network domains: electronic (legacy) and optical.
Portions of one embodiment of a CADOBA software system
ran at the control unit of an edge device. Portions of the
embodiment of the CADOBA system also ran at other net
work control devices. This embodiment acted as an intelligent
gateway, transferring requests from content applications to
network control units. The result in Table 1 shows that
embodiments of the CADOBA system in FIG. 1 dynamically
allocate the bandwidth of the legacy-optical network as
requests from the content application SlideShow.
TABLE 1
Experimental Result of CADOBA
Signal Required Provisioned Visual
No. BW BW Throughput Effect
1 0 0 0 No image
shown
2 1.00 Mbps 1.00 Mbps 0.935 Mbps Slow
3 10.00 Mbps 10.00 Mbps 9.77 Mbps Normal
4 100.00 Mbps 100.00 Mbps 47.51 Mbps Past
The two programs Slideclient and Slideserver transmit
continuously 2~3 MB JPEG images, running on two Pen
tium-2 Linux PCs. Slideserver is the image source and sends
a requested image to Slideclient. Slideclient displays an
image it receives.
“Required BW (Bandwidth)” is the bandwidth parameter
requested by an application signal for the Slideclient-Slide
server content tra?ic. Slideserver signals a changing band
width every 30 seconds or longer.
“Provisioned BW (Bandwidth)” is the real bandwidth allo
cated by CADOBA for the requested content tra?ic. It is not
always equal to the “Required BW (Bandwidth)” as network
bandwidth becomes less available.
“Throughput” is the maximal rate that Slideclient receives
pure image data from Slideserver via TCP at each signal case.
It excludes overheads of L1-L4 protocol headers in a packet.
The maximal throughput reached by the application pro
grams is 47.51 Mbps.
An initial demonstration of the CADOBA system (see FIG.
1) used three optical devices (OPE included), 2 content
switches, 3 control units and 2 Linux boxes for end applica
tions. All of these network devices are available from Nortel
Networks of Santa Clara, Calif.
With reference to FIG. 1, during the demonstration, Slide
Client 108 sent an image service request to SlideShow for its
content service. SlideClient 108 and SlideServer 106 are a
pair of known application programs for delivering large
images, with no modi?cation for the illustrated embodiment
of a CADOBA system. SlideServer 106 accepted the image
request and signaled the network, using RSVP, an indication
of the bandwidth required to deliver the image content. An
embodiment of the invention, residing at a control unit (mas
ter) 102, instructed content switch 104 to ?lter and redirect
the RSVP signal packets. The content switch by itself does
not support the RSVP protocol nor processes an RSVP
packet.
SlideServer 106 could signal again later at any time that the
bandwidth requirement is changed. When this embodiment of
10. US 7,944,827 B2
the CADOBA system (at control unit master) processed the
signal, it Would perform a neW network setup/con?guration
over the content sWitch and optical device When necessary.
The neW netWork setup/con?guration can include realloca
tion ofbandWidth, recon?guration of forwarding priority and
recon?guration of optical content routes. As a result, at runt
ime, the illustrated embodiment provided dynamic band
Width allocation and forWarding conditions, i.e., it provided
different service levels based on signals from the requesting
application.
Embodiments of the present invention advantageously
encourage application developers to develop bandWidth
intensive applications such as video teleconferencing,
streaming media and storage area netWorking.
The present invention is not limited to bandWidth alloca
tion. Rather, one can use embodiments of the invention in
other applications. For example, one can use embodiments of
the invention to create an optical virtual private netWork
(VPN), to develop accounting packages that meter netWork
usage by an application, and to build a many-to-many video
conference channel.
Furthermore, since certain changes may be made in the
above constructions Without departing from the scope of the
invention, it is intended that all matter contained in the above
description or shoWn in the accompanying draWings be inter
preted as illustrative and not in a limiting sense.
What is claimed is:
1. A method for performing content aWare optical band
Width allocation over a netWork having an edge device, the
method comprising the steps of: receiving an application
signal traf?c characterized by at least one network-related
parameter; based on the at least one netWork-related param
eter, provisioning an optical route for forWarding the received
application signal tra?ic; and forWarding a content-speci?c
tra?ic along the provisioned optical route, Wherein the con
tent-speci?c tra?ic is generated by ?ltering the received
application signal tra?ic; Wherein the provisioned optical
route has a bandWidth con?gured to be allocated for forWard
ing content-speci?c tra?ic along the provisioned optical
route, Wherein said receiving step further comprises: using a
transport unit of the edge device, ?ltering the received appli
cation signal traf?c; and forWarding the ?ltered received
application signal tra?ic to a gateWay module disposed in a
control unit of the edge device for determining the at least one
netWork-related parameter.
2. The method according to claim 1, Wherein the at least
one netWork-related parameter is selected from a group con
sisting of: bandWidth, application request, application
requirement, content tag, and content identi?er.
3. The method according to claim 1, Wherein said provi
sioning step further comprises:
using a provisioning module disposed in a control unit of
the edge device,
setting up a neW link in an optical netWork domain for
forWarding the received application signal traf?c.
4. The method according to claim 1, Wherein said provi
sioning step further comprises
using a provisioning module disposed in a control unit of
the edge device,
manipulating an existing link in an optical netWork domain
for forWarding the received application signal traf?c by
dynamically utiliZing bandWidth on the existing link.
5. The method according to claim 1, Wherein said forWard
ing step further comprises
?ltering the received application signal traf?c to generate
packets With speci?ed content characteristics;
20
25
30
35
40
45
50
55
60
65
10
differentiating packets With speci?ed content characteris
tics to form content streams; and
routing formed content streams along the provisioned opti
cal route.
6. The method according to claim 1, Wherein said provi
sioning step further comprises
allocating bandWidth for the received application signal
traf?c by interfacing With a plurality of control units
disposed in the netWork to con?gure an optical link,
Wherein the optical link is used for forWarding the con
tent-speci?c tra?ic along the provisioned optical route.
7. The method according to claim 1, Wherein said provi
sioning step further comprises
allocating bandWidth for the received application signal
traf?c by con?guring a physical transport port of the
edge device, Wherein the physical transport port is used
for forWarding the content-speci?c tra?ic along the pro
visioned optical route.
8. The method according to claim 1, Wherein said forWard
ing step further comprises
based on the at least one netWork-related parameter, creat
ing routing rules for the edge device for forWarding
content-speci?c traf?c along the provisioned optical
route.
9. The method according to claim 1, Wherein said provi
sioning step further comprises
provisioning a plurality of optical routes for forWarding the
received application signal traf?c.
10. The method according to claim 9, Wherein the content
speci?c tra?ic is forWarded along some provisioned optical
routes selected from the plurality of provisioned optical
routes based on the at least one network-related parameter of
the received application signal traf?c.
11. The method according to claim 1, Wherein receiving
step further comprises
using a gateWay module,
transforming the received application signal tra?ic into
an optical control signal;
con?guring an optical device in communication With the
edge device to
allocate bandWidth for the content-speci?c traf?c;
and
establish an optical link for forWarding the content
speci?c tra?ic.
12. A system for performing content aWare optical band
Width allocation over a netWork, comprising: an edge device
con?gured to receive an application signal tra?ic character
iZed by at least one netWork-related parameter; based on the
at least one netWork-related parameter, provision an optical
route for forWarding the received application signal traf?c;
and forWard a content-speci?c traf?c along the provisioned
optical route, Wherein the content- speci?c traf?c is generated
by ?ltering the received application signal traf?c; Wherein the
provisioned optical route has a bandWidth con?gured to be
allocated for forWarding content-speci?c traf?c along the
provisioned optical route, Wherein the edge device includes a
control unit having a gateWay module in communication With
a transport unit con?gured to ?lter the received application
signal traf?c; and forWard the ?ltered received application
signal tra?ic to the gateWay module that determines the at
least one netWork-related parameter.
13. The system according to claim 12, Wherein the at least
one netWork-related parameter is selected from a group con
sisting of: bandWidth, application request, application
requirement, content tag, and content identi?er.
14. The system according to claim 12, Wherein the control
unit of the edge device includes a provisioning module con
11. US 7,944,827 B2
11
?gured to set up a new link in an optical network domain for
forwarding the received application signal tra?ic.
15. The system according to claim 14, wherein the provi
sioning module is further con?gured to manipulate an exist
ing link in the optical network domain for forwarding the
received application signal traf?c by dynamically utiliZing
bandwidth on the existing link.
16. The system according to claim 14, wherein the provi
sioning module is further con?gured to provision a plurality
of optical routes for forwarding the received application sig
nal tra?ic.
17. The system according to claim 16, wherein the content
speci?c tra?ic is forwarded along some provisioned optical
routes selected from the plurality of provisioned optical
routes based on the at least one network-related parameter of
the received application signal tra?ic.
18. The system according to claim 12, wherein the control
unit is further con?gured to
?lter the received application signal tra?ic to generate
packets with speci?ed content characteristics;
differentiate packets with speci?ed content characteristics
to form content streams; and
route formed content streams along the provisioned optical
route.
19. The system according to claim 18, wherein the provi
sioning module is con?gured to allocate bandwidth for the
20
25
12
received application signal tra?ic by interfacing with a plu
rality of control units disposed in the network to con?gure an
optical link, wherein the optical link is used for forwarding
the content-speci?c traf?c along the provisioned optical
route.
20. The system according to claim 19, wherein the provi
sioning module is further con?gured to allocate bandwidth
for the received application signal traf?c by con?guring a
physical transport port of the edge device, wherein the physi
cal transport port is used for forwarding the content-speci?c
traf?c along the provisioned optical route.
21. The system according to claim 12, wherein the control
unit is further con?gured to create, based on the at least one
network-related parameter, routing rules for the edge device
for forwarding content-speci?c tra?ic along the provisioned
optical route.
22. The system according to claim 12, wherein the gateway
module is further con?gured to
transform the received application signal traf?c into an
optical control signal;
con?gure an optical device in communication with the
edge device to
allocate bandwidth for the content-speci?c tra?ic; and
establish an optical link for forwarding the content-spe
ci?c traf?c.