无线局域网中多信道预约冲突避免接入协议研究

Analysis on reservation-based multi-channel multiple access protocol with collision avoidance in WLAN

为无线局域网提出了一种多通道预约冲突避免的随机多址接入协议,该协议综合了预约类协议和多通道的思想.采用平均周期分析方法对该系统进行分析,得到系统的信息分组发送成功的平均长度公式,分析了系统的吞吐量.分析表明,在使用任意确定数目的信道,在总带宽相同的情况下新协议表现出比单通道CS-MA协议更好的性能.

Aiming at the wireless local networks, a reservation-based stochastic multi-channel multiple access protocol with collision avoidance is presented. It integrates the ideas of multi-channel and reservation. This system is analyzed by means of the mean-value based approach. And the formula for the mean value is obtained when the grouping messages are sent successfully. In the ease of the same tobal bandwidth, the numerical results show that the performance is better than that of CSMA protocol with single channel.