计算机工程
計算機工程
계산궤공정
COMPUTER ENGINEERING
2014年
10期
122-126
,共5页
时分多址%时隙分配算法%时隙回收算法%无冲突%Ad Hoc网络%吞吐量
時分多阯%時隙分配算法%時隙迴收算法%無遲突%Ad Hoc網絡%吞吐量
시분다지%시극분배산법%시극회수산법%무충돌%Ad Hoc망락%탄토량
Time Division Multiple Address ( TDMA )%slot assignment algorithm%slot reuse algorithm%contention-avoid%Ad Hoc network%throughput
针对分簇Ad Hoc网络中固定时隙分配算法信道资源浪费和竞争时隙分配算法传输延迟不固定的问题，提出一种基于时分多址接入的无冲突动态时隙分配算法。该算法根据网络负载动态调整帧长，即当网络负载增大时，增加帧长，提高信道利用率；当网络负载减小时，减少帧长，降低信道申请时延。仿真结果表明，与NEBS算法和时隙ALOHA算法相比，该算法可根据网络负载动态调整资源分配，从而提高系统的吞吐量。
針對分簇Ad Hoc網絡中固定時隙分配算法信道資源浪費和競爭時隙分配算法傳輸延遲不固定的問題，提齣一種基于時分多阯接入的無遲突動態時隙分配算法。該算法根據網絡負載動態調整幀長，即噹網絡負載增大時，增加幀長，提高信道利用率；噹網絡負載減小時，減少幀長，降低信道申請時延。倣真結果錶明，與NEBS算法和時隙ALOHA算法相比，該算法可根據網絡負載動態調整資源分配，從而提高繫統的吞吐量。
침대분족Ad Hoc망락중고정시극분배산법신도자원낭비화경쟁시극분배산법전수연지불고정적문제，제출일충기우시분다지접입적무충돌동태시극분배산법。해산법근거망락부재동태조정정장，즉당망락부재증대시，증가정장，제고신도이용솔；당망락부재감소시，감소정장，강저신도신청시연。방진결과표명，여NEBS산법화시극ALOHA산법상비，해산법가근거망락부재동태조정자원분배，종이제고계통적탄토량。
Concerning the problem of resource waste in fixed assignment algorithm and uncertain transmission delay in contention assignment algorithm, a dynamic slot assignment algorithm of contention-avoid based on Time Division Multiple Address( TDMA) for clustered Ad Hoc network is proposed. The length of frame can be adapted to the net traffic. When the net traffic increases, the frame length increases to improve channel utilization; when the net traffic reduces,the frame length reduces to reduce the delay of accessing. It is proved by simulation results that the algorithm can increase throughput of the system,compared with NEBS and slot-ALOHA.
