Title :
A new improved MAC scheme: RM-MAC
Author :
Zhang, Wenbin ; Yang, Xiaozong ; Wu, Shaochuan
Author_Institution :
Commun. Res. Center, Harbin Inst. of Technol., Harbin, China
Abstract :
As a typical MAC layer salvaging scheme, MASA is applied to IEEE802.11 with constant bit rate. In Ad Hoc networks, the salvation character of this scheme improves the performance of the 802.11 MAC protocol. However, the IEEE802.11b with variable bit rate is widely used at present. Consequently, it is necessary to analyze the behavior of MASA in variable rate conditions. Based on the above idea, this paper proposes a new salvaging scheme called Relay Multi-rate MAC (RM-MAC), which is an integration of MASA and modified Receiver-Based AutoRate (RBAR). A two-dimensional markov model concerning this new scheme is established, and then simulation by NS2 is implemented. Both model analyzing and simulation results show that RM-MAC is superior to IEEE802.11 in aggregation throughput and average packet delay.
Keywords :
Markov processes; access protocols; ad hoc networks; wireless LAN; IEEE 802.11 MAC protocol; IEEE802.11b; MAC layer salvaging scheme; MASA behaviour; NS2; RBAR; RM-MAC; ad hoc networks; aggregation throughput; average-packet delay; improved MAC scheme; modified receiver-based autorate; relay multirate MAC; two-dimensional Markov model; Data models; Delay; Markov processes; Mobile communication; Receivers; Relays; Throughput; Aggregation throughput; Average packet delay; IEEE802.11; MASA;
Conference_Titel :
Communications and Networking in China (CHINACOM), 2011 6th International ICST Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4577-0100-9
DOI :
10.1109/ChinaCom.2011.6158267
