摘要
为了在移动ad hoc网络中有效利用无线信道资源,提出一种基于ID的信道预约(ID-based channel reservation,简称IDBCR)多址接入协议.该协议在公共信道上发送Request-To-Send/Clear-To-Send(RTS/CTS)分组实现握手,采用基于节点ID的信道选择方案选择无冲突的业务信道传输数据分组,目的节点成功接收完数据分组后在另一个公共信道上回复acknowledgment(ACK)分组,有效避免了暴露终端问题.最后,仿真实现了IDBCR协议,并与CAM-MAC(cooperative asynchronous multi-channel MAC)多信道协议比较.结果表明,在总信道利用率、平均信道利用率和平均分组延迟性能上,IDBCR多址接入协议明显优于CAM-MAC协议.
A novel ID-based channel reservation （IDBCR） multiple access protocol is presented for efficient channel sharing in ad hoc networks. Its flexibly employs request-to-send （RTS） and clear-to-send （CTS） dialogue on a common channel and selects a conflict-free traffic channel to accomplish the transmission of a data packet, based on an ID-based channel selection scheme. The acknowledgment （ACK） packet for the data packet transmission is replied to the sender over another common channel, which effectively eliminates the influence of an exposed terminal problem. Finally, the comparison of the proposed protocol with the CAM-MAC （cooperative asynchronous multi-channel MAC） protocol is provided, and simulation results show that the proposed protocol outperforms the CAM-MAC protocol on a total channel utilization, average channel utilization, and average packet delay.
出处
《软件学报》
EI
CSCD
北大核心
2010年第10期2690-2700,共11页
Journal of Software
基金
国家自然科学基金No.60532030
国家杰出青年科学基金No.60625102
北京航空航天大学"蓝天新星"计划No.221235~~
关键词
移动AD
HOC网络
多址接入
信道预约
冲突避免
mobile ad hoc network
multiple access
channel reservation
collision avoidance
