负载感知的太赫兹纳米传感网的TDMA协议
Load-aware TDMA Protocol for Terahertz Nanosensor Networks
投稿时间:2018-03-07  修订日期:2018-09-12
DOI:10.11908/j.issn.0253-374x.2018.11.016     稿件编号:    中图分类号:TN929.5
 
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中文摘要
      针对基于TS OOK(time spread on off keying)调制的通信系统存在数据传输连续碰撞的问题,考虑到实际应用场景具备负载不均衡的特点,提出负载感知的TDMA (LA TDMA) 协议.该协议根据网络中源节点数目、源节点业务量大小以及太赫兹信道的传输特性,在传统TDMA协议基础上实现动态分配时隙.仿真结果表明:该协议是能量高效的,在时延和平均吞吐量方面均具有明显的优势,因此可以应用于时延要求较苛刻的网络场景中.
英文摘要
      A load-aware time division multiple access (LA TDMA) protocol is proposed in this paper, by considering the avoidance of symbol collisions in the time spread on-off keying (TS OOK) based communication system combined with load-unbalanced application scenarios. This protocol adopts a dynamic TDMA-based time slot allocation mechanism according to the current number of source nodes, their corresponding traffic and the transmission peculiarities of Terahertz channel. The simulation results show that LA TDMA is energy efficient and gains obvious advantages in average end-to-end delay and average throughput, which proves suitable to support low-delay and load-unbalanced wireless nanosensor networks (WNSNs).
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