Wireless multimedia sensor network
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This document proposes a mechanism for data transmission in wireless multimedia sensor networks (WMSNs) using information fusion. It discusses how WMSNs, which transmit multimedia data like images and videos, require more processing than traditional wireless sensor networks. The mechanism involves refining and fusing data before transmission to reduce the amount of data sent and lower power consumption for WMSNs. It provides a flowchart showing the process of reducing data transmission in WMSNs using information fusion.
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The document compares the performance of traditional networks and software defined networks (SDN). Traditional networks use dedicated hardware devices like routers and switches that have fixed functionality, while SDNs separate the control plane from the data plane and allow for centralized programmable control. The document outlines some limitations of traditional networks like inability to scale, lack of network security and performance issues. It then discusses how SDNs can dynamically respond to network changes and usage patterns. It proposes evaluating metrics like packet delivery ratio and hop-to-hop delay in both network types using algorithms like heuristic and load balancing algorithms.
lan
LANs are computer networks used for local communication within an office or building, using cables to connect devices. WANs connect computers over longer distances like cities using common carriers. Key differences are scope, with WANs being more widespread, connections using carriers versus Ethernet for LANs, and cost with WAN transmission being more expensive. Both provide advantages like efficient sharing of resources and reliable, up-to-date information. MANs interconnect LANs operating at near LAN speeds over a larger area.
A Platform for Data Intensive Services Enabled by Next Generation Dynamic Opt...
The new architecture is proposed for data intensive enabled by next generation dynamic optical networks
Offers a Lambda scheduling service over Lambda Grids
Supports both on-demand and scheduled data retrieval
Supports bulk data-transfer facilities using lambda-switched networks
Provides a generalized framework for high performance applications over next generation networks, not necessary optical end-to-end
Supports out-of-band tools for adaptive placement of data replicas
Data communication
Flow control manages the rate of data transmission between nodes to prevent overwhelm. It ensures a receiving node is not overwhelmed by a fast sender. Flow control prevents degradation from overload, avoids deadlock, and provides fair resource allocation. There are two main types: stop-and-wait which provides reliable transfer but is inefficient for long transmissions, and sliding window which controls packets between computers for reliable sequential delivery and performs better with limited buffers. Flow control occurs at different levels including between individual nodes, switches, and transport between users.
Energetic Slot Allotment for Improving Interchange in Wireless Sensor Network
This document discusses improving energy efficiency and throughput in wireless sensor networks. It begins with an introduction to wireless sensor networks and their design challenges, including limited energy capacity. It then discusses how existing medium access control protocols provide energy efficiency but at the cost of increased delay and limited throughput. The document proposes dynamic slot allocation as a way to adapt bandwidth based on traffic load, maintaining low duty cycles with light traffic but scheduling more transmission opportunities with increased traffic. This allows energy to only be used when needed to carry application traffic. The document surveys dynamic slot allocation approaches in wireless sensor networks.
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141060753008 vrajesh parikh_slides
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141060753008 3715302
The document discusses and compares several page replacement algorithms for different types of memory. It begins by describing Efficient Page Replacement Algorithm (EPRA) which focuses on reducing write operations and energy consumption for NAND flash memory. It then summarizes Adaptive Page Replacement Algorithm (APRA) which maintains a high hit ratio and can adapt to different workloads. Next, it covers Adaptively Mixed List (AML) algorithm which improves cold page detection and refers pages into four types to determine replacement. It concludes by discussing augmenting data structures like doubly circular linked lists using move-to-front heuristics to improve efficiency of LRU page replacement algorithms.
141060753008 3715301
This document discusses the SSH model, which is a Java web application framework that uses Struts for the presentation layer, Spring for the business layer, and Hibernate for the persistence layer. It provides overviews of Struts, Spring, and Hibernate individually, including their components and functions. It then discusses the disadvantages of each framework and how to integrate Struts and Spring and Hibernate and Spring. The integration allows the frameworks to work together effectively. Finally, it provides an example of how the frameworks can be used together in an application with Struts for the frontend, Hibernate for data access, and Spring as the core framework.
141060753008 3715306
The document discusses several reliable transaction protocols. It begins by covering the basics of transactions, including properties like atomicity, consistency, isolation and durability. It then summarizes a fair transaction protocol based on electronic cash that uses a third party to guarantee fairness. Next, it outlines a real-time protocol for stock market transactions that allows new order types and detects delays. Finally, it proposes a lazy commit protocol for mobile transactions that minimizes bandwidth and communication through a local transaction manager and global transaction manager approach. References several research papers on database transactions, electronic cash protocols, stock market protocols, and mobile transaction protocols.
Vrajesh parikh handoff_presentation1
This document discusses handoff schemes for high-speed mobile internet services. It describes the issues with mobility and different types of handoffs between networks. It proposes two approaches - a prediction-based approach that performs authentication of neighboring access points in advance, and creating a heterogeneous mobile switching and management network (HMSMN) to support seamless vertical handoffs across different wireless technologies. The HMSMN would detect available networks, make handoff decisions, initiate handoffs using mobility protocols like MIP, and support tight integration with mobility protocols for seamless connectivity during vertical handoffs.
Handoff scheme for high speed mobile internet services
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Wireless multimedia sensor network
- 1. Data Transmission Mechanism for WMSN Using Information Fusion -Vrajesh Parikh -141060753008 -Sem 2 WSN
- 2. DIFFERENCE WSN • Used for the passing scalar data to the sink node • Low processing needed on the acquired data • Hard constraint over memory, power, processing and lifetime. WMSN • Used to pass multimedia data, like images, videos and audio. • Requires heavy processing of data • Lifetime of power is more as compare to WSN • It is an extension of WSN
- 3. DATA REFINEMENT AND FUSION PROCESS
- 4. FLOWCHART FOR REDUCING THE DATA TRANSMISSION IN WMSN
- 5. References • ZHEN -JIANG ZHANG, CHIN-FENG LAI, AND HAN-CHIEH CHAO "A green data transmission mechanism for wireless multimedia sensor network using information fusion" 1536-1284 2014 IEEE
- 6. References • ZHEN -JIANG ZHANG, CHIN-FENG LAI, AND HAN-CHIEH CHAO "A green data transmission mechanism for wireless multimedia sensor network using information fusion" 1536-1284 2014 IEEE