基于节点机会角色转换的M2M上行通信策略

针对M2M(Machine-to-Machine,机器通信)网络,终端节点上行通信过程中多网关节点并存的场景,研究了该场景下的一个简化模型:一个终端节点为信源,两个网关节点竞争成为信宿,把接收到信源发送的数据转发至基站。利用角色转换思想,提出了基于本地信道状态信息的节点机会角色转换策略(ORT-L, Opportunistic Role Transition Protocol based on Local Channel State Information),并研究了该场景下协同网络的中断概率和能量效率性能。从蒙特卡罗仿真中,证明了ORT-L角色转换策略仅仅依靠本地信道状态信息的可行性,并在性能相比于传统协同通信网络在可靠性和能量效率上有很大改善。其理论分析值与仿真结果相吻合。

M2M Uplink Communication Strategy based on Opportunistic Role Transition

For M2M (Machine-to-Machine) uplink communication network where multiple gateway nodes coexist with only one terminal node, a simplified model of this scenario is studied: a terminal node as the source, two gateway nodes competing to be the sink which transmits the data to the base station after receiving message. By considering the idea of role transition, an ORT-L protocol(Opportunistic Role Transition Protocol based on Local Channel State Information) is proposed, and outage probability and energy efficiency performance of the proposed ORT-L protocol also studied. Monte Carlo simulations indicate the feasibility of ORT-L solely with local channel state information. In addition, this ORT-L protocol enjoys a better performance of reliability and energy efficiency as compared with the traditional cooperative communication network. Theoretical analyses are fairly identical with simulation results.