计算机工程
計算機工程
계산궤공정
COMPUTER ENGINEERING
2013年
9期
157-161
,共5页
Ad Hoc网络%智能天线%聋节点%队列头阻塞%数据包调度%媒介控制接入协议
Ad Hoc網絡%智能天線%聾節點%隊列頭阻塞%數據包調度%媒介控製接入協議
Ad Hoc망락%지능천선%롱절점%대렬두조새%수거포조도%매개공제접입협의
Ad Hoc networks%smart antenna%deaf node%Head of Line(HOL) blocking%data packet scheduling%medium access control protocol
针对智能天线系统中数据包队列头阻塞和“聋节点”问题,提出一种新的数据包调度算法。根据智能天线的方向性网络配置矢量,将节点周边空间划分为干扰区域和自由区域,依次为待发队列中数据包的目的地址匹配可用的自由区域,进行数据传输。仿真结果表明,该算法能有效消除队列头阻塞和“聋节点”,从而提高Ad Hoc网络的吞吐量性能,降低网络时延。
針對智能天線繫統中數據包隊列頭阻塞和“聾節點”問題,提齣一種新的數據包調度算法。根據智能天線的方嚮性網絡配置矢量,將節點週邊空間劃分為榦擾區域和自由區域,依次為待髮隊列中數據包的目的地阯匹配可用的自由區域,進行數據傳輸。倣真結果錶明,該算法能有效消除隊列頭阻塞和“聾節點”,從而提高Ad Hoc網絡的吞吐量性能,降低網絡時延。
침대지능천선계통중수거포대렬두조새화“롱절점”문제,제출일충신적수거포조도산법。근거지능천선적방향성망락배치시량,장절점주변공간화분위간우구역화자유구역,의차위대발대렬중수거포적목적지지필배가용적자유구역,진행수거전수。방진결과표명,해산법능유효소제대렬두조새화“롱절점”,종이제고Ad Hoc망락적탄토량성능,강저망락시연。
For the problem of Head of Line(HOL) blocking and deaf node in the smart antenna system, a novel packet scheduling algorithm is proposed. Based on the Directional Network Allocation Vector(DNAV), it divides the surrounding space of a tagged node into interference regions and free regions, and transmits packets selected in turn from the data queue if there is an appropriately free region. Simulation results show that the algorithm can eliminate the deaf node problem and resolve the HOL blocking efficiently, which can obtain higher throughput and lower network delay.