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A Medium Access Mechanism to Support Urgent Message Transmission  

Han, Se-Won (홍익대학교 컴퓨터정보통신공학과)
Oh, Young-Bin (홍익대학교 컴퓨터정보통신공학과)
Sim, Jae-Ki (홍익대학교 컴퓨터정보통신공학과)
An, Beoung-Ku (홍익대학교 컴퓨터정보통신공학과)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.10, no.1, 2010 , pp. 97-105 More about this Journal
Abstract
This paper proposes an effective medium access mechanism which is based on IEEE 802.11 to transmit an urgent message, The main features of the proposed mechanism are as follows. First, when it comes to channel access to have high priority, it has a shorter interval between frames than that specified in standard document. Second, we use fixed window size instead of back-off window with an exponential increase. Performance evaluation of proposed mechanism is executed by simulation and compare with the node using the specified mechanism in standard document. Performance evaluation results show that according to increasing competition the nodes using proposed method have less accessing time than the conventional methods. Also, the proposed method can improve processing time because of the decreasing transmission delay.
Keywords
IEEE 802.11; MAC Protocol; Urgent Traffic; Backoff Windows; InterFrame Space;
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  • Reference
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