基于多信道预约的传感器网络MAC协议研究  

Study on multi-channel reservation based MAC protocol for sensor networks

作　　者：张德升[1,2] 李金宝[1,2] 郭龙江[1,2] 

机构地区：[1]黑龙江大学计算机科学技术学院,黑龙江哈尔滨150080 [2]黑龙江省数据库与并行计算重点实验室,黑龙江哈尔滨150080

出　　处：《通信学报》2011年第4期126-137,共12页Journal on Communications

基　　金：国家自然科学基金资助项目(61070193;60803015);黑龙江省科技攻关基金资助项目(GC09A109);中国博士后基金资助项目(20080430902);黑龙江省教育厅重点基金资助项目(1154Z1001);黑龙江省博士后基金资助项目(LRB08-021);哈尔滨市青年科技创新人才研究专项基金资助项目(2008RFQXG107);黑龙江大学杰出青年基金资助项目(OYS2080735);学生学术创新及创新实验室基金资助项目(208SIR0735)~~

摘　　要：针对传感器网络中三重隐终端问题,提出了一种基于自适应占空比的多信道MAC协议—MCR,MCR通过多信道预约机制高效地解决了该问题。在理论分析中,通过最小化节点平均信道切换次数的下界得出了节点的最优占空比。为验证MCR中多信道预约和自适应占空比机制的性能,进行了模拟和真实实验,实验结果表明,与其他MAC协议相比,随着信道数及网络负载的增加,MCR提高了网络吞吐量,降低了传输所消耗的能量。Aiming at triple hidden terminal problems in wireless sensor networks,an adaptive duty cycle based multi-channel MAC protocol was proposed,called MCR.MCR efficiently handled triple hidden terminal problems with multiple channel reservation.By minimizing the lower bound of average times of channel switching in MCR,the optimal duty cycle in theoretical analysis was obtained.To investigate values of multiple channel reservation and dynamic duty cycling in MCR,extensive simulation and real testbed experiments were conducted.The results show that compared with other protocols,when the number of channels is larger or loads are heavy,M-cube improves throughput and energy effi-ciency significantly.

关 键 词：无线传感器网络 多信道MAC协议 多跳 多信道 睡眠隐终端 最优占空比 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]