摘要
基于有效竞争预约接入、无冲突轮询传输的思想 ,提出了支持节点移动性和多跳网络结构的UPMA(Us er dependentPerfect schedulingMultipleAccess )协议 .其指导思想是仅有发送分组的节点才竞争接入使用信道资源 ,无业务发送的节点将立即被取消占用信道的资格 ,因此它极大地提高了信道的使用效率 ;同时 ,提出了一种冲突避免和分解协议来保证节点能快速接入信道 ;最后 ,以星型拓扑结构的网络为例考察了它对Internet数据业务的支持性能 ,并且给出了相关的结论 .
Most previously proposed transmission specifications cannot overcome the resource wastage problem satisfactorily. User-dependent Perfect-scheduling Multiple Access (UPMA) protocol for supporting node mobility and multihop architecture is described based on the idea of contention reservation and polling. In the protocol, only the nodes have packets to send contend to use channel and the nodes without traffic transmission are immediately deleted from polling list so that it improves channel utilization greatly. Moreover, a collision avoidance and resolution protocol is proposed to guarantee a node to access channel rapidly.
出处
《计算机学报》
EI
CSCD
北大核心
2003年第5期530-538,共9页
Chinese Journal of Computers
基金
国家自然科学基金 (69872 0 2 8)
国家"八六三"高技术研究发展计划项目(2 0 0 1AA12 3 0 3 1)
高等学校优秀青年教师教学科研奖励计划资助
