摘要
针对水声半双工传感器网络中能够实现广域通信的网格网络节点不满足单碰撞域的假设,导致网络吞吐量的下降问题.利用大传播时延的TDMA水声MAC协议原理出发,以Super-TDMA协议作为框架进行建模,而该协议都是对固定碰撞域的假设下研究网格拓扑的时隙调度.对此在可变碰撞域的条件下,理论推导水声网格传感器网络在可变碰撞域的假设下时隙调度的吞吐量上限.并使用启发搜索算法设计了达到吞吐量上限的时隙调度矩阵.该算法是根据节点传输的约束条件得出各节点无干扰传输的时隙调度矩阵.通过仿真结果表明,在一定理想约束条件下,设计的时隙调度矩阵可以达到理论吞吐量上限.
The grid network nodes that can realized wide-area communication in underwater acoustic half-duplex sensor network do not satisfy the assumption of single collision domain,which led to the problem of network throughput decline.Started from the principle of TDMA underwater acoustic MAC protocol with large propagation delay,the Super-TDMA protocol was used as the framework to model,and this protocol was to study the time slot scheduling of grid topology under the assumption of fixed collision domain.In this regard,under the condition of variable collision domain,the upper limit of the throughput of time-slot scheduling for underwater acoustic grid sensor network was theoretically derived under the assumption of variable collision domain.And the heuristic search algorithm was used to design the time slot scheduling matrix which can reach the upper limit of throughput.The algorithm obtains the time slot scheduling matrix of each node s non-interference transmission according to the constraints of node transmission.The simulation resulted showed that under certain ideal constraints,the designed time slot scheduling matrix can reach the upper limit of theoretical throughput.
作者
陈国璐
CHEN Guo-lu(School of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《哈尔滨商业大学学报（自然科学版）》
CAS
2022年第6期723-729,共7页
Journal of Harbin University of Commerce：Natural Sciences Edition
