信道利用率与网络分组传输碰撞优化研究  

Research on Channel Utilization and Network Packet Transmission Collision Optimization

作　　者：赵婕[1] ZHAO Jie(Shaanxi Polytechnic Institute,Xianyang 712000)

机构地区：[1]陕西工业职业技术学院,咸阳712000

出　　处：《舰船电子工程》2018年第11期67-72,共6页Ship Electronic Engineering

摘　　要：针对移动自组织网络在不同场景中运用存在的低信道利用率和高碰撞传输等问题,提出了一种基于动态空间预留的介质访问控制(MAC,Medium Access Control)协议。在该协议中,分布在网络覆盖区域的组头根据源节点的传输请求,周期性地调控数据传输时隙上数据的发送或接收,从而有效地提高信道利用率;此外,论文通过参考更多的网络参数确定空间预留半径,以确保在降低分组传输碰撞的同时也能防止暴露终端问题恶化;最后,论文还从数学的角度验证分组碰撞的变化对网络吞吐量的影响。仿真结果表明,与现有的MAC协议相比,论文提出的协议有效地实现了更高的吞吐量和更低的分组碰撞概率。Aiming at the problems of low channel utilization and high collision transmission in mobile ad hoe networks in different scenarios, a MAC Medium Access Control protocol based on dynamic space reservation is proposed. In this protocol, the distribution network coverage area in the group head according to the transmission request of the source node, periodically send data control data transmission or receiving time slot, so as to effectively improve the channel utilization rate. In addition, by referring to the network parameters more reserved space to determine the radius, to ensure that the lower packet transmission collision at the same time also can prevent the deterioration of exposed terminal problems. Finally, this paper also verifies the influence of packet collisions on network throughput fi＇om the point of view of mathematics. The simulation results show that the proposed protocol can effectively achieve higher throughput and lower packet collision probability compared with the existing MAC protocol.

关 键 词：介质访问控制 空间预留 网络分组 信道利用率 传输碰撞 

分 类 号：TN915[电子电信—通信与信息系统]