Title :
An Improved Access Scheme Based on Multiple-Hop Priority and Cross-Layer Design in 802.11e
Author :
Long, Hua ; Lu, Joan ; Yip, Jim ; Jiang, Hua Long
Author_Institution :
Fac. of Inf. Eng. & Autom., Kunming Univ. of Sci. & Technol., Kunming
Abstract :
In ad hoc networks, the end-to-end delay of packets becomes long when other middle nodes transmit these packets and the multi-hops will affect the quality-of-service (QoS) of voice and video. This paper analyzes influence of multi-hops in ad hoc network by a simulative experiment, which put forward an improved access algorithm, called as more hop first-EDCF (MHF-EDCF). The mechanisms are based on 802.11e EDCF and multi-hop characteristics of ad hoc networks with cross-layer method. MHF-EDCF offers a higher priority to multi-hops packets for voice and video. The results of simulation show that MHF-EDCF can reduce the end-to-end delay of multimedia traffic significantly and throughput of network is increased.
Keywords :
ad hoc networks; multimedia communication; quality of service; telecommunication traffic; wireless LAN; 802.11e; access algorithm; ad hoc network; cross-layer design; end-to-end delay; more hop first-EDCF; multihop packets; multimedia traffic; multiple-hop priority; quality of service; Ad hoc networks; Computer networks; Cross layer design; Delay; Design engineering; Quality of service; Spread spectrum communication; Telecommunication traffic; Throughput; Traffic control;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-2107-7
Electronic_ISBN :
978-1-4244-2108-4
DOI :
10.1109/WiCom.2008.732
