Title :
The MAC Mechanism with QoS Provision Based on Stream-Maintenance in Ad Hoc Networks
Author :
Jigang, Qiu ; Huijie, Li ; Xiaokang, Lin
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing
Abstract :
Because the signal of different nodes interferes with each other, the collision happens frequently in ad hoc networks. If only adopting contention-based MAC protocol, it is hard to guarantee quality of service (QoS) of multi-media services such as voice and video in ad hoc network. A series of periodical realtime service packages from the same source node can be regarded as a real-time data stream. By adopting the resource reserve mechanism to improve the IEEE 802.11 DCF, a new type of MAC mechanism including MAC-FM and MAC-FM (E) is brought forward in this paper. MAC-FM and MAC-FM (E) reserve dynamically the time slots for the real-time data stream in distributed mode to avoid the collision of real-time service packages. In addition, the networks performance including delay and throughput is analyzed in theory and validated via simulation. The result indicates that MAC-FM and MAC-FM (E) can decrease the delay greatly and increase the throughput of ad hoc networks
Keywords :
access protocols; ad hoc networks; media streaming; quality of service; real-time systems; IEEE 802.11 DCF; QoS provision; ad hoc network; collision avoidance; contention-based MAC protocol; multimedia services; quality of service; real-time data stream; resource reserve mechanism; Ad hoc networks; Analytical models; Delay; Media Access Protocol; Network topology; Packaging; Performance analysis; Quality of service; Streaming media; Throughput; Quality of Service; real-time data stream; resource reserve mechanism; the Ad Hoc networks;
Conference_Titel :
ITS Telecommunications Proceedings, 2006 6th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
0-7803-9587-5
Electronic_ISBN :
0-7803-9587-5
DOI :
10.1109/ITST.2006.289020
