计算机科学 ›› 2014, Vol. 41 ›› Issue (12): 60-66.doi: 10.11896/j.issn.1002-137X.2014.12.014
沈虎,吕绍和,王晓东,周兴铭
SHEN Hu,LV Shao-he,WANG Xiao-dong and ZHOU Xing-ming
摘要： 媒介接入控制(MAC)用以协调无线节点对公共信道的共享,对无线网络性能有至关重要的影响。传统的MAC协议只能抑制冲突,不能根除及处理冲突。提出了一种基于已知干扰消除技术的新型消解冲突方法,并以此为基础设计了一个全新的MAC协议——CR-MAC。在CR-MAC协议中,无线接入点(AP)通过将部分报文传输与已知干扰消除相结合来解码冲突所包含的所有报文。因此发生冲突的报文传输过程能够被充分利用,且所需的报文重传减少了。实验结果表明,在网络吞吐率及预期报文时延指标上,CR-MAC协议较普遍采用的IEEE 802.11 DCF协议均有明显优势。
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