改进的分组预约多址协议性能分析  

Performance Analysis of An Improved Packet Reservation Multiple Access

作　　者：沙红斌[1] 堵星宇[1] 赵姚同[1] 

机构地区：[1]上海交通大学,上海200030

出　　处：《通信技术》2001年第5期11-13,共3页Communications Technology

摘　　要：分组预约多址(PRMA)协议已被广泛地应用于短距离无线通信系统中,它不仅适用于数据传输,同样也适用于话音传输。但由于PRMA协议的帧长是固定的,竞争的产生使部分时隙被浪费,信道容量不能更好地被提高,而且在重负荷情况下系统会发生不稳定问题。提出了一种改进的分组预约多址协议(IPRMA),进行了理论分析和计算机仿真,由于采用排队等待方式接入时隙信道,降低了分组时延,减少了分组丢弃率,从而提高了系统容量。Packet Reservation Multiple Access technology has been widely used in sh ort range wire-less communication systems,not onl y for data,but also for voice transmi ssion.Being PRMA based on a fix frame scheme,it cannot thoroughly t ake advantage of the very short propagation delays that allow.In this paper,we present an improved PRMA pr otocol with a queuing mode to access t ime slot channels.Both the theoretic analysis and computer sim ulation show that the improvements o f packet reservation multiple ac-cess performance.

关 键 词：通信协议 发分组预约多址协议 性能分析 

分 类 号：TN915.04[电子电信—通信与信息系统]