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Effect of payload length variation and retransmissions on multimedia in 802.11a WLANs

Published: 03 July 2006 Publication History

Abstract

Multimedia transmission over wireless local area networks is challenging due to the varying nature of the wireless channel as well as the inherent difference between multimedia and data traffic. In the MAC layer, a single bit error in the packet can lead to the entire packet being discarded. This results in a higher packet error rate for larger payload sizes. Retransmission due to packet errors causes the contention window to double, and this leads to a decrease in throughput if the wireless channel does not improve for the retransmitted packets. Hence, throughput is a function of packet payload length as well as the maximum number of allowable retransmissions. In this paper, we investigate the effect of payload length adaptation and retransmissions on the throughput and capacity of multimedia users. Numerical results and simulations reveal that careful payload adaptation significantly improves the throughput performance at low signal to noise ratios (SNRs). It is also observed that excessive retransmissions reduce the effective throughput, thereby decreasing the capacity of multimedia users in the presence of data users. Since multimedia traffic is more latency constrained and less error constrained, by carefully selecting the payload length and maximum number of allowable retransmissions based on the channel conditions, a greater number of multimedia users can be supported.

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      cover image ACM Conferences
      IWCMC '06: Proceedings of the 2006 international conference on Wireless communications and mobile computing
      July 2006
      2006 pages
      ISBN:1595933069
      DOI:10.1145/1143549
      Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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      Published: 03 July 2006

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      Author Tags

      1. IEEE 802.11a
      2. multimedia transmission
      3. payload adaptation
      4. rate adaptation
      5. retransmissions

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      • (2016)Optimal thresholds for two-state ECG compressing algorithm2016 International Conference on Biomedical Engineering (BME-HUST)10.1109/BME-HUST.2016.7782080(3-7)Online publication date: Oct-2016
      • (2016)Evaluating Cross-Layer Cooperation of Congestion and Flow Control in IEEE 802.11s Networks2016 IEEE 30th International Conference on Advanced Information Networking and Applications (AINA)10.1109/AINA.2016.12(181-188)Online publication date: Mar-2016
      • (2015)A cross layer video transmission scheme combining geographic routing and short-length Luby transform codesInternational Journal of Distributed Sensor Networks10.1155/2015/1402122015(1-1)Online publication date: 1-Jan-2015
      • (2015)Intention Sharing for Medium Access Control in Wireless LANsProceedings of the 13th ACM International Symposium on Mobility Management and Wireless Access10.1145/2810362.2810367(21-30)Online publication date: 2-Nov-2015
      • (2015)Adaptive Payload Length Algorithm for Video Transmission Over Wireless Multi-hop NetworksAdvances in Wireless Sensor Networks10.1007/978-3-662-46981-1_41(423-434)Online publication date: 16-May-2015
      • (2011)MAC layer support for delay tolerant video transport in disruptive MANETsProceedings of the 10th international IFIP TC 6 conference on Networking - Volume Part I10.5555/2008780.2008792(106-119)Online publication date: 9-May-2011
      • (2011)Retransmission-aware queuing and routing for video streaming in wireless mesh networks2011 IEEE Wireless Communications and Networking Conference10.1109/WCNC.2011.5779463(2137-2142)Online publication date: Mar-2011
      • (2008)The impact of link-layer retransmissions on video streaming in wireless mesh networksProceedings of the 4th Annual International Conference on Wireless Internet10.5555/1554126.1554194(1-9)Online publication date: 17-Nov-2008
      • (2007)Personalized Interactive Newscast (PINC)Proceedings of the Second International Workshop on Semantic Media Adaptation and Personalization10.1109/SMAP.2007.34(56-61)Online publication date: 17-Dec-2007
      • (2006)IPAC: IP-based Adaptive Packet Concatenation for Multihop Wireless Networks2006 Fortieth Asilomar Conference on Signals, Systems and Computers10.1109/ACSSC.2006.355148(2147-2153)Online publication date: Oct-2006

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