Ad Hoc网络中一种支持QoS的TDMA MAC协议  

A TDMA MAC Protocol Supporting QoS in Ad Hoc Network

作　　者：张浪[1] 李大双[1] 毛建兵[1] 景中源 

机构地区：[1]中国电子科技集团公司第三十研究所,四川成都610041

出　　处：《通信技术》2014年第10期1162-1166,1186,共6页Communications Technology

摘　　要：在Ad Hoc网络中MAC接入协议对整个网络性能起着至关重要的作用。目前提出的一些MAC协议大部分都从提高网络整体吞吐量及降低时延的角度出发,而针对每个业务的QoS需求、接入时隙抖动等具体的问题考虑不足。针对此问题,提出了一种新的基于业务需求的TDMA MAC协议。将数据段和控制段巧妙地设计为交叉形式,并在数据时隙分配算法中采用二叉树分组选择的方法,避免了在多时隙接入情况下各时隙之间的抖动。引入业务优先级制度,在时隙分配算法中通过接入时延代价等参数来体现,能够满足相应的QoS需求。In Ad Hoc network, MAC access protocol plays a crucial role in whole network performance. Current MAC protocols are mostly designed from the perspective of improving throughput and reducing time -delaying, but ignoring the specific problems of different businesses, such as QoS requirements and time slot jitter. Aiming at the problem, this paper proposes a novel TDMA MAC protocol based on business demands. The data section and control section are cleverly designed in crossed style, and adopts the binary tree method is adopted in the slot allocation algorithm, thus to avoid the jitter of between various time slots in multi-slot access. The QoS requirements are satisfied by introducing the system of business-priority grades, reflected by parameters such as time-delaying cost in the slot allocation algorithm.

关 键 词：自组网 动态TDMA 介质访问控制协议 公平性 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]