一种基于用户的自适应安排多址接入协议

一种基于用户的自适应安排多址接入协议

刘静;李建东;陈彦辉

(西安电子科技大学综合业务网理论及关键技术国家重点实验室, 陕西西安 710071)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2004-12-20 发布日期:2004-12-20

A user adaptive scheduling multiple access protocol

LIU Jing;LI Jian-dong;CHEN Yan-hui

(State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an 710071, China)

Received:1900-01-01 Revised:1900-01-01 Online:2004-12-20 Published:2004-12-20

摘要/Abstract

摘要： 提出了用户根据业务积压情况自适应安排传输的多址接入协议(UASMA)，它利用自组织算法确定网络中处于激活态节点的个数，使用轮询的方式妥善安排分组的传输，根据用户业务量合理地调整节点每次传输的分组数．它采用独特的帧结构，并提出参考帧长的概念，大大提高了信道的利用率．UASMA协议同时提出了一个高效的接入竞争解决算法，保证激活节点能够迅速接入信道．最后对UASMA协议的性能进行了仿真研究，并与CSMA协议、轮询机制和UPMA协议进行比较，仿真结果表明UASMA协议具有更优越的性能．

关键词: MAC协议, 轮询, 用户数目, 积压分组

Abstract: A new multiple access control(MAC) protocol-the user adaptive scheduling multiple access(UASMA) protocol is proposed, which can perfectly schedule the packet transmission according to the exact number of active mobile terminals(MTs) determined by the self-organizing algorithm, and can adjust the number of packets sent by one node in one frame properly. The UASMA protocol employs a unique frame structure and presents the concepts of reference-frame-length, thus increasing the utilization ratio of the channel greatly. Meanwhile, the UASMA protocol proposes an efficient collision resolution algorithm for guaranteeing that active MTs can access the channel rapidly. Finally, the performance of the UASMA protocol is evaluated by simulation and compared with CSMA, rouding-poll and UPMA protocols, with the simulation results showing that the former has better performance than the latter.

Key words: MAC protocol, rounding-poll, user number, packet overstock

中图分类号:

TN915.04

刘静;李建东;陈彦辉. 一种基于用户的自适应安排多址接入协议[J]. J4, 2004, 31(6): 841-845.

LIU Jing;LI Jian-dong;CHEN Yan-hui.

A user adaptive scheduling multiple access protocol

[J]. J4, 2004, 31(6): 841-845.

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