摘要
针对TDMA网络节点间业务量不均匀时,会造成信道资源严重浪费的情况,提出了一种利用信道侦听的CS-TDMA协议。该协议在TDMA协议的基础上,节点通过接收到各节点的数据包数量估算相应节点的业务量大小。当某节点时隙剩余时,向其统计中业务量最大的一个节点发送ATS信息,通知该节点占用剩余时隙发送数据,直至时隙结束。仿真结果表明,CS-TDMA协议较TDMA协议在传输时延、吞吐量、数据接收率上均有所提高,尤其在节点间业务量大小不均匀时,时延性能提升更加明显。
A dynamic TDMA protocol （CS-TDMA） utilizing channel sense is developed to solve the great waste of channel source when traffic is not uniform between all of the nodes in the TDMA network. The CS-TDMA protocol is based on the TDMA protocol, and the node counts the number of packets from other nodes for estimating their traf- fic. When the timeslot is remainder, an ATS （access to send） message is sent to the busiest node, informing the node to send data until the timeslot is exhausted. Simulation results show that CS-TDMA protocol has better perform- ance than TDMA protocol in the parameters of end-to-end delay, network throughput and message delivery. The ad- vantage in delay is especially prominent when the traffic has a big gap between nodes.
出处
《电子科技》
2015年第11期1-4,共4页
Electronic Science and Technology
基金
国家自然科学基金资助项目(61302153)
