Title :
Improving the QoS in IEEE 802.11e Based on the Method of Virtual Heap Tree
Author :
Wang, Anbao ; Pan, Hailan
Author_Institution :
Sch. of Comput. & Inf., Shanghai Second Polytech. Univ., Shanghai, China
Abstract :
The way in which IEEE 802.11 DCF uses the random back-of scheme to resolve the channel contention leads to inefficient utilization of the channel bandwidth resource, especially in a highly loaded network. The portion of channel bandwidth wasted in collision state is significantly high. In this paper, The VHT (Virtual Heap Tree)-CSMA architecture has been proposed to cope with 802.11e wireless network communication environment. It is based on a forcing collision resolution mechanism, which is able to prioritize RT (real time)-traffic over timing unconstrained traffic. That is, instead of controlling all traffic generated by any nodes, the proposed method will only control the traffic generated by real time nodes.
Keywords :
bandwidth allocation; carrier sense multiple access; quality of service; real-time systems; trees (mathematics); wireless LAN; DCF; IEEE 802.11e; QoS; VHT-CSMA architecture; channel bandwidth resource utilization; channel contention; collision resolution mechanism; real-time traffic control; virtual heap tree; wireless network communication environment; Access protocols; Communication system traffic control; Computer networks; Data communication; Media Access Protocol; Multiaccess communication; Road accidents; Wireless LAN; Wireless communication; Wireless networks; 802.11e; Quality of Service; Virtual Heap Tree; Wireless Network;
Conference_Titel :
Networks Security Wireless Communications and Trusted Computing (NSWCTC), 2010 Second International Conference on
Conference_Location :
Wuhan, Hubei
Print_ISBN :
978-0-7695-4011-5
Electronic_ISBN :
978-1-4244-6598-9
DOI :
10.1109/NSWCTC.2010.272