面向物联网中的支持节点移动的MAC协议  

Mobility-supporting MAC scheme for Internet of things

作　　者：王喜军 高士娟 WANG Xi-jun, GAO Shi-juan(School of Information Engineering, Zhengzhou University of Industrial Technology, Zhengzhou 451150, Chin)

机构地区：[1]郑州工业应用技术学院信息工程学院,河南郑州451150

出　　处：《计算机工程与设计》2018年第6期1570-1573,共4页Computer Engineering and Design

基　　金：河南省基础与前沿技术研究计划基金项目(142300410283)

摘　　要：多数媒介接入控制(medium access control,MAC)协议仅关注静态网络,然而,物联网中的多数节点是移动的。为此,提出面向物联网中的支持节点移动的MAC(mobility-supporting MAC,MS-MAC)协议。交互控制包,建立邻居节点,利用节点密度和距离计算节点权值,择优选择转发节点,减少传输跳数,引用竞争避免算法消除由隐藏终端节点产生的竞争和拥塞问题。实验数据表明,与MoX-MAC、MOBINET、ME-ContikiMAC相比,MS-MAC协议在端到端传输时延、能耗性能方面得到有效提高。Most of the proposed medium access control（MAC）protocols mainly focus on static networks,but most of nodes in Internet of things（IoT）are mobile.Therefore,a mobility-supporting MAC（MS-MAC）scheme for Internet of things was proposed.Control packets were exchanged among nodes,and neighbors nodes were constructed.The weight of nodes was computed based on density of nodes and distance,the optimal forwarding nodes were selected to reduce the numbers of hop.Contention avoidance algorithm（CAA）was introduced to mitigate the contention and congestion problem that arised from the hidden nodes.Simulation results show that MS-MAC outperforms state-of-the-art solutions such as MoX-MAC,MOBINET and ME-ContikiMAC,in terms of significantly reducing delay and energy consumption.

关 键 词：物联网 媒介接入控制 权值 移动 竞争避免算法 

分 类 号：TN929.5[电子电信—通信与信息系统]