HSDPA is an enhancement to WCDMA that improves downlink throughput and QoS. It utilizes several techniques including shared channel transmission, short transmission time intervals of 2ms, higher order modulation up to 16QAM, fast link adaptation, fast scheduling, and fast hybrid ARQ with soft combining. HSDPA channels include the HS-DSCH shared data channel and associated dedicated channels for control signaling and feedback. Admission control and congestion control help manage network capacity. Mobility is supported through serving HS-DSCH cell changes. Flow control between RNC and RBS helps buffer data for efficient scheduling over the Iub interface.
The document discusses HSDPA (High Speed Downlink Packet Access), a 3G mobile telecommunications standard that allows networks to have higher data transfer speeds and capacity. Key points:
- HSDPA was introduced in 2005 and allows peak data rates of 14.4 Mbps compared to 2 Mbps for standard WCDMA. It uses shared channel transmission, fast scheduling, adaptive modulation/coding, and HARQ.
- Planning HSDPA deployment requires analyzing existing network performance, dimensioning configurations, parameter planning, and performance monitoring. Critical aspects include carrier configuration, hardware capacity, transmission capacity, and coverage strategy.
- HSDPA improves on WCDMA through features like shared channel transmission, channel
HSDPA is a 3G protocol that provides faster download speeds on mobile phones equivalent to ADSL. It was included in 3GPP Release 5 and allows peak download speeds of up to 14 Mbps. Key features of HSDPA include shared channel transmission, a short 2 ms transmission time interval, fast link adaptation to channel conditions, fast scheduling between users, and fast hybrid ARQ with soft combining of retransmissions. These features provide higher throughput, reduced delays, and more efficient use of transmission power compared to previous 3G standards.
The document discusses HSPA MAC-centric technologies including HSDPA and HSUPA. It provides an overview of 3GPP UMTS evolution from Release 5 to Release 8, which introduced HSDPA and HSUPA to improve peak data rates and reduce latency. It describes key aspects of HSPA such as the location of MAC-hs at the Node B to enable fast scheduling and HARQ, as well as transport and physical channels used in HSDPA and HSUPA like HS-DSCH, E-DCH, HS-SCCH, and HS-DPCCH. It also covers flow control between the Node B and RNC and enhancements introduced in Release 6.
1) HSDPA is a new feature in WCDMA/UTRA that aims to increase peak data rates, quality of service, and spectral efficiency for downlink packet data services. It introduces fast adaptive modulation and coding, short transmission time intervals of 2ms, and fast hybrid ARQ to improve efficiency.
2) The key characteristics of HSDPA include a fixed spreading factor of 16, replacement of fast power control with adaptive modulation and coding, and moving some MAC functionality to the Node-B to enable fast scheduling. This allows for peak data rates exceeding 2Mbps using up to 15 parallel codes.
3) HSDPA supports both incremental redundancy and chase combining retransmission strategies in the fast hybrid ARQ protocol
The document provides an overview of High Speed Downlink Packet Access (HSDPA), a new feature in the 3GPP WCDMA/UTRA standard to improve downlink peak data rates, quality of service, and spectral efficiency for packet data services. HSDPA introduces a high-speed downlink shared channel (HS-DSCH) with a short transmission time interval of 2ms, adaptive modulation and coding, multi-code operation, and fast hybrid ARQ to increase data rates up to theoretically over 10Mbps. It also moves some medium access control functionality to the Node-B to enable fast packet scheduling on a per-transmission time interval basis. Evaluation shows HSDPA can increase cell throughput by 50-100
Wcdma Radio Network Planning And OptimizationPengpeng Song
The document discusses WCDMA radio network planning and optimization, including key topics such as:
1) Fundamentals of WCDMA link budget analysis and radio interface protocol architecture.
2) Radio resource utilization techniques like power control, handover control, and congestion control.
3) Issues of coverage and capacity planning as well as enhancement methods.
4) The process of WCDMA radio network planning including dimensioning, detailed planning, and optimization aspects to address interference.
The document discusses the evolution of HSPA and HSPA+ mobile technologies. It describes how HSPA introduced improvements like higher data rates, lower latency, and better capacity and efficiency over prior 3G standards. HSPA+ further improved capabilities by utilizing higher order modulations like 64QAM, multiple-input multiple-output antenna techniques, continuous packet connectivity, and layer 2 enhancements to achieve downlink speeds up to 42 Mbps and uplink speeds up to 11 Mbps.
The document discusses the evolution of HSPA and HSPA+ mobile technologies. It describes how HSPA introduced improvements like higher data rates, lower latency, and better capacity and efficiency over prior 3G standards. HSPA+ further improved capabilities by utilizing higher order modulations like 64QAM, multiple-input multiple-output antenna techniques, continuous packet connectivity, and layer 2 enhancements to achieve downlink speeds up to 42 Mbps and uplink speeds up to 11 Mbps.
The document discusses HSDPA (High Speed Downlink Packet Access), a 3G mobile telecommunications standard that allows networks to have higher data transfer speeds and capacity. Key points:
- HSDPA was introduced in 2005 and allows peak data rates of 14.4 Mbps compared to 2 Mbps for standard WCDMA. It uses shared channel transmission, fast scheduling, adaptive modulation/coding, and HARQ.
- Planning HSDPA deployment requires analyzing existing network performance, dimensioning configurations, parameter planning, and performance monitoring. Critical aspects include carrier configuration, hardware capacity, transmission capacity, and coverage strategy.
- HSDPA improves on WCDMA through features like shared channel transmission, channel
HSDPA is a 3G protocol that provides faster download speeds on mobile phones equivalent to ADSL. It was included in 3GPP Release 5 and allows peak download speeds of up to 14 Mbps. Key features of HSDPA include shared channel transmission, a short 2 ms transmission time interval, fast link adaptation to channel conditions, fast scheduling between users, and fast hybrid ARQ with soft combining of retransmissions. These features provide higher throughput, reduced delays, and more efficient use of transmission power compared to previous 3G standards.
The document discusses HSPA MAC-centric technologies including HSDPA and HSUPA. It provides an overview of 3GPP UMTS evolution from Release 5 to Release 8, which introduced HSDPA and HSUPA to improve peak data rates and reduce latency. It describes key aspects of HSPA such as the location of MAC-hs at the Node B to enable fast scheduling and HARQ, as well as transport and physical channels used in HSDPA and HSUPA like HS-DSCH, E-DCH, HS-SCCH, and HS-DPCCH. It also covers flow control between the Node B and RNC and enhancements introduced in Release 6.
1) HSDPA is a new feature in WCDMA/UTRA that aims to increase peak data rates, quality of service, and spectral efficiency for downlink packet data services. It introduces fast adaptive modulation and coding, short transmission time intervals of 2ms, and fast hybrid ARQ to improve efficiency.
2) The key characteristics of HSDPA include a fixed spreading factor of 16, replacement of fast power control with adaptive modulation and coding, and moving some MAC functionality to the Node-B to enable fast scheduling. This allows for peak data rates exceeding 2Mbps using up to 15 parallel codes.
3) HSDPA supports both incremental redundancy and chase combining retransmission strategies in the fast hybrid ARQ protocol
The document provides an overview of High Speed Downlink Packet Access (HSDPA), a new feature in the 3GPP WCDMA/UTRA standard to improve downlink peak data rates, quality of service, and spectral efficiency for packet data services. HSDPA introduces a high-speed downlink shared channel (HS-DSCH) with a short transmission time interval of 2ms, adaptive modulation and coding, multi-code operation, and fast hybrid ARQ to increase data rates up to theoretically over 10Mbps. It also moves some medium access control functionality to the Node-B to enable fast packet scheduling on a per-transmission time interval basis. Evaluation shows HSDPA can increase cell throughput by 50-100
Wcdma Radio Network Planning And OptimizationPengpeng Song
The document discusses WCDMA radio network planning and optimization, including key topics such as:
1) Fundamentals of WCDMA link budget analysis and radio interface protocol architecture.
2) Radio resource utilization techniques like power control, handover control, and congestion control.
3) Issues of coverage and capacity planning as well as enhancement methods.
4) The process of WCDMA radio network planning including dimensioning, detailed planning, and optimization aspects to address interference.
The document discusses the evolution of HSPA and HSPA+ mobile technologies. It describes how HSPA introduced improvements like higher data rates, lower latency, and better capacity and efficiency over prior 3G standards. HSPA+ further improved capabilities by utilizing higher order modulations like 64QAM, multiple-input multiple-output antenna techniques, continuous packet connectivity, and layer 2 enhancements to achieve downlink speeds up to 42 Mbps and uplink speeds up to 11 Mbps.
The document discusses the evolution of HSPA and HSPA+ mobile technologies. It describes how HSPA introduced improvements like higher data rates, lower latency, and better capacity and efficiency over prior 3G standards. HSPA+ further improved capabilities by utilizing higher order modulations like 64QAM, multiple-input multiple-output antenna techniques, continuous packet connectivity, and layer 2 enhancements to achieve downlink speeds up to 42 Mbps and uplink speeds up to 11 Mbps.
HSDPA (High Speed Downlink Packet Access) is an enhancement to 3G that improves downlink performance. It features Hybrid Automatic Repeat Request (HARQ) to reduce errors, fast cell selection to improve handovers, and Adaptive Modulation and Coding (AMC) to optimize data rates up to 10Mbps. New HSDPA terminals are required and initially offer download speeds of 3.6Mbps with later models reaching 14Mbps. HSDPA represents a significant step forward from 3G technologies.
The document summarizes the key concepts in planning and deploying a 3G WCDMA mobile network. It describes the network architecture including nodes like RNC, Node B and interfaces. It also explains radio network planning phases and considerations like frequency planning, link budget calculations, coverage and capacity planning. The document discusses technologies like HSDPA that enhance data capabilities and presents LinkIT, a planning tool developed to understand network planning mathematics.
3G Huawei RAN Resource Monitoring and management.pptNailat2
This document summarizes resources that need to be monitored in a Huawei WCDMA network to avoid congestion and blockages. It discusses monitoring nodeB and cell level resources like CE cards, licenses, OVSF codes, power levels, and Iub bandwidth. It also covers monitoring traffic, KPIs, service distributions and generating relationships between resources, traffic, and quality of service to determine if resources are sufficient. Counter examples are provided to monitor resource usage like TCP, ENU, OVSF code occupancy, and power levels.
This document provides an overview of HSDPA (High Speed Downlink Packet Access), which was introduced in 3GPP Release 5 to improve downlink packet data performance in WCDMA networks. Key aspects of HSDPA discussed include fast link adaptation, hybrid ARQ with soft combining, channel-dependent scheduling, higher order modulation, connection handling and mobility support, and capacity management functions. HSDPA utilizes a new high-speed downlink shared channel (HS-DSCH) to deliver packet data to user equipment at higher speeds than previous WCDMA networks.
Admission control guarantees quality of service by controlling the number of users based on interference, capacity, load, and coverage. It selectively denies access requests to limit load. Congestion control resolves overload by delaying packets, removing calls, or moving users between channels. Power control aims to minimize transmit power while maintaining quality by adjusting power levels through inner-loop, outer-loop, and open-loop control. Soft/softer handover combines signals from multiple base stations or sectors to support user mobility and power control.
The document discusses 3GPP specification evolution including TD-SCDMA evolution and 3GPP Long Term Evolution. It provides details on the TD-SCDMA evolution path including multi-carrier HSDPA and MBMS. It also discusses the targets of 3GPP Long Term Evolution including significantly increased peak data rates, improved spectrum efficiency, reduced latency, scalable bandwidth support, and reduced costs.
1. The document describes an HSDPA simulator project that was created to test how data rate improvements were achieved from 1998 to 2006.
2. The simulator models the physical layer of the HSDPA standard and calculates throughput for different channel conditions defined in the standard.
3. The project aims to increase the simulation speed by implementing the turbo encoder in FPGA hardware to gain practical insights.
The document discusses WCDMA radio network planning and optimization. It covers several key topics:
1. WCDMA fundamentals including network infrastructure, radio interface protocols, link characteristics, and link budget analysis.
2. Radio resource utilization, which involves functions like power control, handover control, congestion control, admission control, and load control.
3. Issues related to coverage and capacity as well as cell deployment and WCDMA radio network planning, including co-planning with GSM networks.
4. Managing co-existing TDD and FDD modes within the network.
Here you are an interesting explanation about HSPA Technology. The High Speed packet Access is the combination of two technologies, one of the downlink and the other for the uplink that can be built onto the existing 3G UMTS or W-CDMA technology to provide increased data transfer speeds.
The original 3G UMTS / W-CDMA standard provided a maximum download speed of 384 kbps.
The document describes the evolution of 3G mobile systems with the introduction of High Speed Downlink Packet Access (HSDPA). HSDPA will enhance 3G by offering higher data rates in the downlink direction through the use of new physical channels, adaptive modulation, Hybrid Automatic Repeat Request, and fast packet scheduling controlled by the Node B. The introduction of HSDPA will occur in phases, with the first phase introducing basic HSDPA functionality and the second phase enhancing it further through the use of technologies like MIMO. HSDPA aims to improve spectral efficiency and support high-speed data services for mobile users.
HSDPA introduces new downlink channels for high-speed data transmission, including the High Speed Downlink Shared Channel (HS-DSCH) which carries user data, the High Speed Physical Downlink Shared Channel (HS-PDSCH) to which HS-DSCH is mapped, and the High-Speed Shared Control Channels (HS-SCCH) for downlink control signaling. Each HSDPA user also has an Associated Dedicated Channel (A-DCH) for control signaling and uplink data. The HS-DSCH, HS-PDSCH, and HS-SCCH are shared channels used to carry high-speed downlink data and control information to multiple users on a TTI basis.
Voice Over U M T S Evolution From W C D M A, H S P A To L T EPengpeng Song
The document outlines the evolution of voice over UMTS networks from WCDMA to LTE. It discusses AMR voice codec characteristics and implementations of voice over UMTS networks in R99, HSPA+, and LTE standards. Key aspects covered include voice over IMS, circuit switched fallback, header compression, scheduling, and performance metrics like capacity and latency.
This document discusses capacity optimization for 3G networks. It provides an overview of network elements, capacity features, blocking and utilization metrics, methodology for capacity monitoring and optimization, and details on optimizing specific network elements and channels including PCH, BCCH, CCCH, FACH, RACH, and UL CE. Key steps outlined are to constantly monitor blocking and utilization counters, investigate issues based on duration and patterns, and introduce solutions such as increasing support from existing elements, adding capacity, or adding new elements.
This document discusses 3G capacity optimization and monitoring software. It provides an overview of network elements and capacity features, including blocking and utilization counters, methodology parameters, and best practices. It also covers capacity features for various technologies like HSDPA, HSUPA, and HSPA+, listing codes, descriptions, and capabilities.
HSDPA (High Speed Downlink Packet Access) is an enhancement to 3G technology that increases download speeds from 384 Kbps to 10 Mbps. HSDPA works by improving spectral efficiency and introducing fast channel control mechanisms. It uses a high speed downlink shared channel and adaptive modulation and coding to boost speeds. While part of 3G, HSDPA is also referred to as 3.5G. HSUPA provides similar enhancements for the uplink. Networks have rolled out HSDPA widely and compatible phones are available. References on HSDPA specifications and technologies are provided.
4G-Fourth Generation Mobile Communication SystemSafaet Hossain
Seminar on "4G-Fourth Generation Mobile Communication System" at UODA Auditorium, November 16,2013.
Technical Presented by: Ahmedul Quadir, Function Tester, Ericcson, Sweeden
High speed down link packet access (hsdpa)WritingHubUK
The title for the report is High Speed Downlink Packet Access (HSDPA). Internet is become apart of our every day life and mobile users demand for high speed access while they are on the move. HSDPA can fulfil these demands and offer more services which are broadband related. The report will analyse and evaluate the HSDPA technology, which include the architecture, protocols and protocol status. Also the report discuss HSDPA principle operation and the physical and MAC layer.
The document describes efforts to enhance EDGE throughput and user experience. It involved optimizing various radio network parameters like PD alignment, support for high multislot classes, adjusting timers and thresholds. Testing in a specific city showed throughput increased 15% for users and 8% per cell. Other KPIs like quality and handover success rates also improved. The work aimed to improve accessibility and throughput where 3G coverage was not uniform and users experienced low throughput compared to 3G.
UMTS-WCDMA is a 3G mobile communication standard that uses CDMA technology. It uses wideband CDMA with a chip rate of 3.84 Mcps for its air interface along with orthogonal variable spreading factor codes. The standard defines protocols and procedures for cell search, handover, uplink and downlink physical channels, and support for multirate services through variable spreading factors. Long term targets for UMTS-WCDMA evolution include higher data rates up to 100 Mbps for full mobility and 1 Gbps for low mobility, as well as improved spectral efficiency.
This document provides an overview of High Speed Downlink Packet Access (HSDPA) technology. It discusses how HSDPA enables significantly higher average bit rates and lower latency compared to prior 3G technologies. Key techniques that enable this include fast scheduling, fast hybrid automatic repeat request (HARQ), and fast link adaptation using adaptive modulation and coding. These techniques are implemented at the Node B to provide faster response times. HSDPA also uses a high-speed downlink shared channel (HS-DSCH) and new transport channels like the high-speed shared control channel (HS-SCCH) and high-speed dedicated physical control channel (HS-DPCCH).
This document provides an overview of LTE (Long Term Evolution) technology and concepts. It begins with a comparison of 3G and 4G technologies, outlining issues with 3G related to performance, mobility management, architecture, and procedures. It then discusses the key requirements for LTE, including support for high data rates, IP services, and flexible bandwidth deployment. The physical layer characteristics of LTE that help meet these requirements are described, such as OFDM, scalable bandwidth, smart antenna technologies like MIMO, and fast scheduling. The document also covers LTE channel bands, system architecture evolution, and the role of the evolved NodeB in the network.
This document provides an overview and introduction to 5G networks for mobile operators. It discusses the expectations for the 5G era, how 5G differs from 4G networks through improved latency, speeds and support for new use cases. It outlines the timeline for 5G standards completion and connections growth forecasts. It also examines the enabling conditions required for 5G deployment, including technology, policy and market readiness. Key areas that operators must consider to create and capture value from 5G are explored, along with the associated costs.
HSDPA (High Speed Downlink Packet Access) is an enhancement to 3G that improves downlink performance. It features Hybrid Automatic Repeat Request (HARQ) to reduce errors, fast cell selection to improve handovers, and Adaptive Modulation and Coding (AMC) to optimize data rates up to 10Mbps. New HSDPA terminals are required and initially offer download speeds of 3.6Mbps with later models reaching 14Mbps. HSDPA represents a significant step forward from 3G technologies.
The document summarizes the key concepts in planning and deploying a 3G WCDMA mobile network. It describes the network architecture including nodes like RNC, Node B and interfaces. It also explains radio network planning phases and considerations like frequency planning, link budget calculations, coverage and capacity planning. The document discusses technologies like HSDPA that enhance data capabilities and presents LinkIT, a planning tool developed to understand network planning mathematics.
3G Huawei RAN Resource Monitoring and management.pptNailat2
This document summarizes resources that need to be monitored in a Huawei WCDMA network to avoid congestion and blockages. It discusses monitoring nodeB and cell level resources like CE cards, licenses, OVSF codes, power levels, and Iub bandwidth. It also covers monitoring traffic, KPIs, service distributions and generating relationships between resources, traffic, and quality of service to determine if resources are sufficient. Counter examples are provided to monitor resource usage like TCP, ENU, OVSF code occupancy, and power levels.
This document provides an overview of HSDPA (High Speed Downlink Packet Access), which was introduced in 3GPP Release 5 to improve downlink packet data performance in WCDMA networks. Key aspects of HSDPA discussed include fast link adaptation, hybrid ARQ with soft combining, channel-dependent scheduling, higher order modulation, connection handling and mobility support, and capacity management functions. HSDPA utilizes a new high-speed downlink shared channel (HS-DSCH) to deliver packet data to user equipment at higher speeds than previous WCDMA networks.
Admission control guarantees quality of service by controlling the number of users based on interference, capacity, load, and coverage. It selectively denies access requests to limit load. Congestion control resolves overload by delaying packets, removing calls, or moving users between channels. Power control aims to minimize transmit power while maintaining quality by adjusting power levels through inner-loop, outer-loop, and open-loop control. Soft/softer handover combines signals from multiple base stations or sectors to support user mobility and power control.
The document discusses 3GPP specification evolution including TD-SCDMA evolution and 3GPP Long Term Evolution. It provides details on the TD-SCDMA evolution path including multi-carrier HSDPA and MBMS. It also discusses the targets of 3GPP Long Term Evolution including significantly increased peak data rates, improved spectrum efficiency, reduced latency, scalable bandwidth support, and reduced costs.
1. The document describes an HSDPA simulator project that was created to test how data rate improvements were achieved from 1998 to 2006.
2. The simulator models the physical layer of the HSDPA standard and calculates throughput for different channel conditions defined in the standard.
3. The project aims to increase the simulation speed by implementing the turbo encoder in FPGA hardware to gain practical insights.
The document discusses WCDMA radio network planning and optimization. It covers several key topics:
1. WCDMA fundamentals including network infrastructure, radio interface protocols, link characteristics, and link budget analysis.
2. Radio resource utilization, which involves functions like power control, handover control, congestion control, admission control, and load control.
3. Issues related to coverage and capacity as well as cell deployment and WCDMA radio network planning, including co-planning with GSM networks.
4. Managing co-existing TDD and FDD modes within the network.
Here you are an interesting explanation about HSPA Technology. The High Speed packet Access is the combination of two technologies, one of the downlink and the other for the uplink that can be built onto the existing 3G UMTS or W-CDMA technology to provide increased data transfer speeds.
The original 3G UMTS / W-CDMA standard provided a maximum download speed of 384 kbps.
The document describes the evolution of 3G mobile systems with the introduction of High Speed Downlink Packet Access (HSDPA). HSDPA will enhance 3G by offering higher data rates in the downlink direction through the use of new physical channels, adaptive modulation, Hybrid Automatic Repeat Request, and fast packet scheduling controlled by the Node B. The introduction of HSDPA will occur in phases, with the first phase introducing basic HSDPA functionality and the second phase enhancing it further through the use of technologies like MIMO. HSDPA aims to improve spectral efficiency and support high-speed data services for mobile users.
HSDPA introduces new downlink channels for high-speed data transmission, including the High Speed Downlink Shared Channel (HS-DSCH) which carries user data, the High Speed Physical Downlink Shared Channel (HS-PDSCH) to which HS-DSCH is mapped, and the High-Speed Shared Control Channels (HS-SCCH) for downlink control signaling. Each HSDPA user also has an Associated Dedicated Channel (A-DCH) for control signaling and uplink data. The HS-DSCH, HS-PDSCH, and HS-SCCH are shared channels used to carry high-speed downlink data and control information to multiple users on a TTI basis.
Voice Over U M T S Evolution From W C D M A, H S P A To L T EPengpeng Song
The document outlines the evolution of voice over UMTS networks from WCDMA to LTE. It discusses AMR voice codec characteristics and implementations of voice over UMTS networks in R99, HSPA+, and LTE standards. Key aspects covered include voice over IMS, circuit switched fallback, header compression, scheduling, and performance metrics like capacity and latency.
This document discusses capacity optimization for 3G networks. It provides an overview of network elements, capacity features, blocking and utilization metrics, methodology for capacity monitoring and optimization, and details on optimizing specific network elements and channels including PCH, BCCH, CCCH, FACH, RACH, and UL CE. Key steps outlined are to constantly monitor blocking and utilization counters, investigate issues based on duration and patterns, and introduce solutions such as increasing support from existing elements, adding capacity, or adding new elements.
This document discusses 3G capacity optimization and monitoring software. It provides an overview of network elements and capacity features, including blocking and utilization counters, methodology parameters, and best practices. It also covers capacity features for various technologies like HSDPA, HSUPA, and HSPA+, listing codes, descriptions, and capabilities.
HSDPA (High Speed Downlink Packet Access) is an enhancement to 3G technology that increases download speeds from 384 Kbps to 10 Mbps. HSDPA works by improving spectral efficiency and introducing fast channel control mechanisms. It uses a high speed downlink shared channel and adaptive modulation and coding to boost speeds. While part of 3G, HSDPA is also referred to as 3.5G. HSUPA provides similar enhancements for the uplink. Networks have rolled out HSDPA widely and compatible phones are available. References on HSDPA specifications and technologies are provided.
4G-Fourth Generation Mobile Communication SystemSafaet Hossain
Seminar on "4G-Fourth Generation Mobile Communication System" at UODA Auditorium, November 16,2013.
Technical Presented by: Ahmedul Quadir, Function Tester, Ericcson, Sweeden
High speed down link packet access (hsdpa)WritingHubUK
The title for the report is High Speed Downlink Packet Access (HSDPA). Internet is become apart of our every day life and mobile users demand for high speed access while they are on the move. HSDPA can fulfil these demands and offer more services which are broadband related. The report will analyse and evaluate the HSDPA technology, which include the architecture, protocols and protocol status. Also the report discuss HSDPA principle operation and the physical and MAC layer.
The document describes efforts to enhance EDGE throughput and user experience. It involved optimizing various radio network parameters like PD alignment, support for high multislot classes, adjusting timers and thresholds. Testing in a specific city showed throughput increased 15% for users and 8% per cell. Other KPIs like quality and handover success rates also improved. The work aimed to improve accessibility and throughput where 3G coverage was not uniform and users experienced low throughput compared to 3G.
UMTS-WCDMA is a 3G mobile communication standard that uses CDMA technology. It uses wideband CDMA with a chip rate of 3.84 Mcps for its air interface along with orthogonal variable spreading factor codes. The standard defines protocols and procedures for cell search, handover, uplink and downlink physical channels, and support for multirate services through variable spreading factors. Long term targets for UMTS-WCDMA evolution include higher data rates up to 100 Mbps for full mobility and 1 Gbps for low mobility, as well as improved spectral efficiency.
This document provides an overview of High Speed Downlink Packet Access (HSDPA) technology. It discusses how HSDPA enables significantly higher average bit rates and lower latency compared to prior 3G technologies. Key techniques that enable this include fast scheduling, fast hybrid automatic repeat request (HARQ), and fast link adaptation using adaptive modulation and coding. These techniques are implemented at the Node B to provide faster response times. HSDPA also uses a high-speed downlink shared channel (HS-DSCH) and new transport channels like the high-speed shared control channel (HS-SCCH) and high-speed dedicated physical control channel (HS-DPCCH).
This document provides an overview of LTE (Long Term Evolution) technology and concepts. It begins with a comparison of 3G and 4G technologies, outlining issues with 3G related to performance, mobility management, architecture, and procedures. It then discusses the key requirements for LTE, including support for high data rates, IP services, and flexible bandwidth deployment. The physical layer characteristics of LTE that help meet these requirements are described, such as OFDM, scalable bandwidth, smart antenna technologies like MIMO, and fast scheduling. The document also covers LTE channel bands, system architecture evolution, and the role of the evolved NodeB in the network.
This document provides an overview and introduction to 5G networks for mobile operators. It discusses the expectations for the 5G era, how 5G differs from 4G networks through improved latency, speeds and support for new use cases. It outlines the timeline for 5G standards completion and connections growth forecasts. It also examines the enabling conditions required for 5G deployment, including technology, policy and market readiness. Key areas that operators must consider to create and capture value from 5G are explored, along with the associated costs.
The document provides information about Award Solutions, Inc., a company that offers training on wireless and IP technologies. It describes Award Solutions' areas of expertise including 4G, LTE, EPC, IMS, and various wireless technologies. It outlines the types of training and services offered, including instructor-led training, self-paced eLearning, consulting services, and public training events. The document also lists sample course titles in emerging technologies, IP convergence, UMTS/HSPA+, 4G LTE, and topics for business audiences.
This document is a student guide for a Qualcomm training course on Long Term Evolution (LTE/FDD) Fundamentals. It provides an outline of the course, which covers the evolution of 3GPP networks, the key aspects and performance targets of LTE, the LTE network architecture including E-UTRAN and EPC, and the protocol layers of E-UTRAN. It also defines various 3GPP terminology and lists many common LTE acronyms.
LTE was developed to overcome limitations in 3G networks like UMTS. It uses OFDM which divides the carrier bandwidth into multiple narrowband subcarriers to reduce multipath fading effects. LTE-Advanced was then created to meet 4G requirements like peak download rates of 1 Gbps by using wider bandwidths up to 20 MHz and carrier aggregation. It fulfills 3GPP and ITU requirements to be considered a true 4G mobile network technology.
UMTS/W-CDMA was initially designed for circuit-switched traffic and was not well-suited for growing IP data traffic. 3GPP made improvements through releases 5-8 to enhance HSDPA, HSUPA, and introduce LTE, providing higher data rates and capacity. LTE aims to meet increasing user demands for broadband connectivity by providing peak data rates up to 300 Mbps downlink and 75 Mbps uplink through improved radio interface features and reduced latency below 10ms. LTE can be deployed in both urban and rural areas using various spectrum bands to enable a step-wise upgrade path from UMTS networks.
This document provides an overview of Long Term Evolution (LTE) radio access network planning. It covers LTE fundamentals and key technologies like OFDM modulation, frame structure, and reference signal structure. It also discusses frequency and spectrum planning considerations like channel bandwidth, carrier frequency, and frequency reuse schemes. Additionally, it addresses link budget and coverage planning factors such as propagation parameters, channel models, and multipath/Doppler effects.
This document provides an overview of LTE (Long Term Evolution) including what LTE is, its key features and benefits, the LTE radio access network architecture, available services and markets, and device availability. Some of the main points covered include that LTE is the 4G standard designed to meet high speed data needs, it provides speeds over 100Mbps, low latency, simpler network structure than 3G, and efficient spectrum use. The document also discusses LTE deployment status worldwide, performance advantages over HSPA, and the types of initial LTE devices available.
The document discusses the architecture of 4G LTE networks. It describes how 4G networks have a simplified architecture compared to 3G and 2G networks by removing unnecessary nodes. The 4G radio access network (RAN) consists only of eNodeB base stations, while the core network is the Evolved Packet Core (EPC). The eNodeB handles all radio resource management and mobility functions without relying on additional nodes. This allows for faster handovers between base stations in 4G. The EPC connects the 4G network to external data networks and contains entities like the MME, HSS, SGW, and PGW to manage user authentication, mobility, routing, and internet connectivity.
This document provides an overview of LTE and its evolution towards 5G networks. It describes LTE as the 4G technology standardized by 3GPP, and the new radio access technology currently being standardized as 5G. Key topics covered include the LTE protocol structure, physical layer, connection procedures, and major enhancements over time like carrier aggregation and support for new use cases. The document also discusses 5G radio access requirements and technical realization currently being standardized to provide 5G wireless connectivity.
This document provides an introduction to the Long Term Evolution (LTE) training course. It discusses the drivers for LTE development including the need for higher data rates. It describes the 3GPP standards process and how LTE fits into the evolution of GSM networks. Key goals for LTE performance are outlined such as improved spectrum efficiency and reduced latency. The document also contains copyright and distribution restrictions.
The document discusses the challenges of 5G testing and evaluation. It notes that 5G will introduce new technologies like massive MIMO, new waveforms, and non-orthogonal multiple access that will increase computational complexity for simulation systems. It also discusses the need for 5G testing and evaluation to have real-world channel models, comprehensively support diverse technologies and performance indicators, rapidly evolve to handle increased computational needs, and be flexible. The evolution of testing technology and instruments over different eras is reviewed.
The document provides an overview of LTE fundamentals and network architecture. It discusses the evolution of wireless technologies over generations and how LTE differs from 3G with features like higher data rates, lower latency and support for MIMO. It describes the LTE network architecture consisting of the radio access network (E-UTRAN) and core network (EPC). It also covers topics like interfaces, the life cycle of a user equipment, radio access techniques and channels in LTE.
This document provides an overview of traditional telephone network signaling protocols and voice over IP protocols. It discusses SS7 and its components for traditional PSTN signaling, as well as peer-to-peer and client-server protocol architectures. Specific protocols covered include H.323, SIP, MGCP, and SCCP. Network design considerations for VoIP are also mentioned.
This document provides an overview of LTE fundamentals, including:
1. It discusses the evolution of mobile networks and technologies leading to the development of LTE, from 1G to 4G networks.
2. It compares LTE to other wireless technologies such as WiMAX and discusses the technical specifications of LTE.
3. It describes the standardization process and technical requirements for LTE as defined by 3GPP, the governing standards body.
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The document discusses the history and importance of chocolate in human civilization. It notes that chocolate originated in Mesoamerica over 3000 years ago and was prized by the Aztecs and Mayans for its taste. Cocoa beans were used as currency and their cultivation was tightly regulated. The Spanish brought cocoa to Europe in the 16th century, starting its global spread and the development of the chocolate industry.
The document provides an overview of LTE technology, including:
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The document discusses the evolution of 4G cellular technology, including LTE, LTE-Advanced, and LTE-Advanced Pro. It notes that LTE-Advanced Pro, defined in 3GPP Release 13 and 14, builds upon previous releases to provide significantly increased data speeds, efficiency, and network capacity compared to prior 4G standards. Key features of LTE-Advanced Pro include support for up to 32 component carriers of 20 MHz each for a total bandwidth of 640 MHz, data rates exceeding 3 Gbps, latency under 2ms, and the ability to aggregate licensed and unlicensed spectrum.
This document contains questions and answers about LTE (Long Term Evolution) technology. Some key points covered include:
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Long Term Evolution (LTE) is a cellular technology that provides significantly faster data speeds of up to 150 Mbps downstream and 50 Mbps upstream. This document provides an overview of the LTE protocol stack, tracing the path of a data packet through the layers from physical to medium access control to radio link control and packet data convergence protocol. Key aspects of LTE operation discussed include hybrid automatic repeat request for error correction, scheduling, quality of service controls, handovers between base stations, and power saving modes.
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Cooperation Organisation and the Belt and Road Economic Initiative.
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Time Division Multiplexing (TDM) is a method of transmitting multiple signals over a single communication channel by dividing the signal into many segments, each having a very short duration of time. These time slots are then allocated to different data streams, allowing multiple signals to share the same transmission medium efficiently. TDM is widely used in telecommunications and data communication systems.
### How TDM Works
1. **Time Slots Allocation**: The core principle of TDM is to assign distinct time slots to each signal. During each time slot, the respective signal is transmitted, and then the process repeats cyclically. For example, if there are four signals to be transmitted, the TDM cycle will divide time into four slots, each assigned to one signal.
2. **Synchronization**: Synchronization is crucial in TDM systems to ensure that the signals are correctly aligned with their respective time slots. Both the transmitter and receiver must be synchronized to avoid any overlap or loss of data. This synchronization is typically maintained by a clock signal that ensures time slots are accurately aligned.
3. **Frame Structure**: TDM data is organized into frames, where each frame consists of a set of time slots. Each frame is repeated at regular intervals, ensuring continuous transmission of data streams. The frame structure helps in managing the data streams and maintaining the synchronization between the transmitter and receiver.
4. **Multiplexer and Demultiplexer**: At the transmitting end, a multiplexer combines multiple input signals into a single composite signal by assigning each signal to a specific time slot. At the receiving end, a demultiplexer separates the composite signal back into individual signals based on their respective time slots.
### Types of TDM
1. **Synchronous TDM**: In synchronous TDM, time slots are pre-assigned to each signal, regardless of whether the signal has data to transmit or not. This can lead to inefficiencies if some time slots remain empty due to the absence of data.
2. **Asynchronous TDM (or Statistical TDM)**: Asynchronous TDM addresses the inefficiencies of synchronous TDM by allocating time slots dynamically based on the presence of data. Time slots are assigned only when there is data to transmit, which optimizes the use of the communication channel.
### Applications of TDM
- **Telecommunications**: TDM is extensively used in telecommunication systems, such as in T1 and E1 lines, where multiple telephone calls are transmitted over a single line by assigning each call to a specific time slot.
- **Digital Audio and Video Broadcasting**: TDM is used in broadcasting systems to transmit multiple audio or video streams over a single channel, ensuring efficient use of bandwidth.
- **Computer Networks**: TDM is used in network protocols and systems to manage the transmission of data from multiple sources over a single network medium.
### Advantages of TDM
- **Efficient Use of Bandwidth**: TDM all
2. Commercial in confidence HSDPA Overview 2005-09-27
2
Outline
HSDPA Principles
HSDPA Channels and Bearers
– Power Setting of new channels
Capacity Management
HS-DSCH Mobility
Flow Control & Transport
Questions and Answers
3. Commercial in confidence HSDPA Overview 2005-09-27
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What is High Speed Downlink Packet
Access (HSDPA)
STANDARDIZED Integral part of WCDMA (3GPP Release 5)
REDUCED DELAY Reduced round trip time
CAPACITY 2 – 3 times improved system throughput
SPEED Higher bit rates: up to 14 Mbps
Smooth Upgrade Short time to market with existing sites
4. Commercial in confidence HSDPA Overview 2005-09-27
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Key Idea in HSDPA
Fast adaptation of
transmission parameters to
fast variations in radio
conditions
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Shared Channel Transmission
HSDPA data channel is called HS-DSCH
A set of radio resources dynamically shared among multiple users
– In the time domain
– In the code domain
Channelization codes allocated
for HS-DSCH transmission
8 codes (example)
SF=16
SF=8
SF=4
SF=2
SF=1
User #1 User #2 User #3 User #4
TTI
Shared
channelization
codes
User #5 (CODE MUX!)
6. Commercial in confidence HSDPA Overview 2005-09-27
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Short TTI (2 ms)
Reduced air-interface delay
– Improved end-user performance
– Required by TCP at high data rates
Increases benefit from other HS-DSCH features
– Fast Link Adaptation
– Fast hybrid ARQ with soft combining
– Fast Channel-dependent Scheduling
10 ms
20 ms
40 ms
Earlier releases
2 ms
Rel 5 (HS-DSCH)
2 ms
7. Commercial in confidence HSDPA Overview 2005-09-27
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Higher Order Modulation
16 QAM to be used when radio quality is good
– E.g., close to base stations
Enables higher rates
16QAM
2 bits/symbol 4 bits/symbol
QPSK
8. Commercial in confidence HSDPA Overview 2005-09-27
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Fast Link Adaptation
Adjust transmission parameters to match
instantaneous channel conditions
HS-DSCH: Rate control
– Based on Quality reports from UE
(CQI= Channel Quality Indicator)
– Adaptive coding rate
– Adaptive modulation
– Adapt on 2 ms TTI basis
– Use “available power”
Compare
– Release 99: Power control (constant
rate)
C
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Good channel
conditions
high data rate
Bad channel
conditions
low data rate
rate adaptation
9. Commercial in confidence HSDPA Overview 2005-09-27
9
Dynamic Power Allocation
Dedicated channels (power controlled)
Common channels
Power usage with dedicated channels
t
Unused power
Power
HS-DSCH with dynamic power allocation
t
Dedicated channels (power controlled)
Common channels
HS-DSCH (rate controlled)
Total
cell
power
Power
Total
cell
power
3GPP Release 99 3GPP Release 5
10. Commercial in confidence HSDPA Overview 2005-09-27
10
Fast channel-dependent
Scheduling
Scheduling = which UE to transmit to at a given time instant and at
what rate
Basic idea: transmit at fading peaks
– Tradeoff: fairness vs cell throughput
high data rate
low data rate
Time
#2
#1 #2 #2
#1 #1 #1
User 2
User 1
Scheduled
user
11. Commercial in confidence HSDPA Overview 2005-09-27
11
Fast channel-dependent
Scheduling
Examples of scheduling algorithms
– Round Robin (RR)
Cyclically assign the channel to users
Channel quality variance unexplored
– Proportional Fair (PF)
Assign the channel to the user with the best relative
channel quality
Improved cell throughput
– Max C/I Ratio
Assign the channel to the user with the best channel
quality
High system throughput but not fair
12. Commercial in confidence HSDPA Overview 2005-09-27
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P1,1
+
Fast Hybrid ARQ with Soft
Combining
Rapid retransmissions of erroneous data
– Hybrid ARQ protocol terminated in RBS
short RTT
– Soft combining in UE of multiple transmission attempts
reduced error rates for RLC retransmissions
P1,2
P1,2
P2,1
P1,1
P1,1 P2,1
P2,2
P2,2
P3,1
P2,1 P3,1
+
Transmitter
Receiver
RTT
13. Commercial in confidence HSDPA Overview 2005-09-27
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HSDPA Basic Principles
Shared Channel Transmission
Dynamically shared in time & code
domain
Higher-order Modulation
16QAM in complement to QPSK for
higher peak bit rates
2 ms
Short TTI (2 ms)
Reduced round trip delay
Fast Hybrid ARQ with
Soft Combining
Reduced round trip delay
Fast Radio Channel
Dependent Scheduling
Scheduling of users on 2 ms time
basis
Fast Link Adaptation
Data rate adapted to radio
conditions on 2 ms time basis
t
P
Dynamic Power Allocation
Efficient power &
spectrum utilisation
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14
Node Impacts
RBS
– HS-DSCH functionality
Scheduling, Link Adaptation, Hybrid ARQ…
- …all implemented in RBS
RNC
– Impact
Setup of HS-DSCH/HS-SCCH
Setup of users on HS-DSCH
Capacity Management, Cell change handling
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Outline
HSDPA Principles
HSDPA Channels and Bearers
– Power Setting of new channels
Capacity Management
HS-DSCH Mobility
Flow Control & Transport
Questions and Answers
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HSDPA Channel Structure
RBS A
RBS A
High-Speed Downlink Shared Channel – HS-DSCH
-High-Speed Physical Downlink Shared Channel – HS-PDSCH : DL Data
-High-Speed Shared Control Channel – HS-SCCH: Scheduling
Associated Dedicated Channel- A-DCH: Data in UL and control in DL
RBS B
RBS B
RBS B
A-DCH
-Multiplexed with High-Speed Dedicated Physical Control Channel:
ACK/NACK + CQI
17. Commercial in confidence HSDPA Overview 2005-09-27
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HS-DSCH and A-DCH
Shared channel:
– HS-DSCH
Per HS-DSCH user:
– A-DCH DL
3.4 kbps SRB (control signalling)
Also needed for power controlling the UL
– A-DCH UL
64 (or 384) kbps DCH
3.4 kbps SRB (control signalling)
High-Speed Dedicated Physical Control Channel
(HS-DPCCH)
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HS-DPCCH and HS-SCCH power
HS-DPCCH (UL)
– ACK, NACK, CQI
Power offsets in relation to DPCCH
Repetition of ACK, NACK, CQI based on performance
HS-SCCH (DL)
– Fixed Power (relative to CPICH)
19. Commercial in confidence HSDPA Overview 2005-09-27
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UE capabilities
HS-DSCH
category
Maximum
number of
HS-DSCH
codes
received
Minimum
inter-TTI
interval
Maximum number of
bits of an HS-DSCH
transport block
received within
an HS-DSCH TTI
Total
number of
soft channel
bits
Modulation
Category 1 5 3 7298 19200 QPSK/16QAM
Category 2 5 3 7298 28800 QPSK/16QAM
Category 3 5 2 7298 28800 QPSK/16QAM
Category 4 5 2 7298 38400 QPSK/16QAM
Category 5 5 1 7298 57600 QPSK/16QAM
Category 6 5 1 7298 67200 QPSK/16QAM
Category 7 10 1 14411 115200 QPSK/16QAM
Category 8 10 1 14411 134400 QPSK/16QAM
Category 9 15 1 20251 172800 QPSK/16QAM
Category 10 15 1 27952 172800 QPSK/16QAM
Category 11 5 2 3630 14400 QPSK
Category 12 5 1 3630 28800 QPSK
20. Commercial in confidence HSDPA Overview 2005-09-27
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HSDPA Services and RABs first
HSDPA release
New RABs
– PS Interactive
64/HS
– PS Interactive
384/HS
16QAM is optional
1–5 HS-PDSCH
codes (configurable)
All HS capable UEs
use HSDPA
regardless of CN
requested bit-rate
Theoretical max: BLER operating level 10 % will
decrease values accordingly
21. Commercial in confidence HSDPA Overview 2005-09-27
21
Outline
HSDPA Principles
HSDPA Channels and Bearers
– Power Setting of new channels
Capacity Management
HS-DSCH Mobility
Flow Control & Transport
Questions and Answers
23. Commercial in confidence HSDPA Overview 2005-09-27
23
Admission control
Power
non-guaranteed
/
non-handover
non-guaranteed
/
handover
guaranteed
/
non-handover
guaranteed
/
handover
A-DCH
/
non-handover
A-DCH
/
handover
Admission Granted
Admission Rejected
Congestion threshold
Handover threshold
Guaranteed threshold
Non-guaranteed threshold
High load situations
should still allow for
access to remaining
power
MAX number of HS-
DSCH users criterion
24. Commercial in confidence HSDPA Overview 2005-09-27
24
Congestion control
Cell(s)
Congestion
Control
Admission
Control
“DL Congestion”
Block ALL new requests
Start congestion resolve actions in the cell
Periodically:
•Downswitch non-guaranteed users to
Cell_FACH
•Downswitch HS-users to idle state
•Drop guaranteed users
Most resource-consuming users are targeted first
25. Commercial in confidence HSDPA Overview 2005-09-27
25
Outline
HSDPA Principles
HSDPA Channels and Bearers
– Power Setting of new channels
Capacity Management
HS-DSCH Mobility
Flow Control & Transport
Questions and Answers
26. Commercial in confidence HSDPA Overview 2005-09-27
26
RNC RNC
Iur
Iub Iub
Iu Iu
Associated
Dedicated
Channels
•Serving HS-DSCH Cell
Selection (Intra and Inter-
Frequency)
•No Soft/Softer HO for
HS-DSCH
•Serving HS-DSCH Cell
Change (Intra-RNC)
Iub
Overview of HSDPA Mobility
27. Commercial in confidence HSDPA Overview 2005-09-27
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Serving HS-DSCH Cell Change, -Mobility
The following events will trigger a serving HS-DSCH cell
change
– A change of best cell within AS (event 1d)
– SHO removal (event1b)
– SHO replacement (event 1c)
RNC RNC
Iur
Iub Iub
Iu Iu
Associated
Dedicated
Channels
Iub
No support for HS-DSCH over Iur
28. Commercial in confidence HSDPA Overview 2005-09-27
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Outline
HSDPA Principles
HSDPA Channels and Bearers
– Power Setting of new channels
Capacity Management
HS-DSCH Mobility
Flow Control & Transport
Questions and Answers
29. Commercial in confidence HSDPA Overview 2005-09-27
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Purpose of Iub flow control
Pre-buffer data in RBS to allow fast
scheduling
Avoid buffer overflow or empty buffers in RBS
Keep an appropriate amount of data buffered
in RBS
– Conflicting requirements
Keep the RBS priority queues short in
order to avoid excessive RLC RTT
Keep enough data in queue to ensure
throughput when scheduled
Ensure that the flow is within Iub Transport
Network limits
SDU buffer
RNC
RBS
UE
RBS buffer
HARQ buffer
TN
(Scheduler)
RLC buffer
Iub flow control
30. Commercial in confidence HSDPA Overview 2005-09-27
30
HSDPA enablers in the Transport
Iub solution optimized for efficient bandwidth utilization
– With AAL2 Switching and UBR for HSDPA
New Best Effort AAL2 QoS class for handling HS traffic
– Class C
AAL2 QoS separation between different traffic classes
– A, B, C
User traffic Flow control for HSDPA
IMA for trunking gains
– For >1.5Mbps HS bandwidth to a single user
31. Commercial in confidence HSDPA Overview 2005-09-27
31
Iub Configuration with AAL2 Switching,
UBR, IMA
T1
T1
3 Mbps
Class B:
DCH best effort
Class C: HSDPA best effort
Class A:
Strict QoS
Voice, Video, CS64,
Common Channels
R99 PS
Data
AAL2/
CBR
B
A
AAL2/UBR
C
ET-MC1 /
MC41
HSDPA Peak rate of up to 2.2Mb/s