摘要
在对GSM/GPRS(globalsystemformobilecommunications/generalpacketradioservice)蜂窝系统现有典型信道分配策略FRA(fixedresourceallocation)和DRA(dynamicalresourceallocation)及其排队策略进行分析的基础上,提出了基于DRA的改进策略DMC＿DRA(dynamicalminimumchannelsofpacketsforDRA).新策略能动态改变GPRS包下限信道数,在FRA和DRA之间折衷,提高信道利用率、包传输时间、呼叫阻塞率等综合性能.
Based on the analyses of the typical channel allocation schemes such as FRA (fixed resource allocation) and DRA (dynamical resource allocation) for GSM/GPRS (global system for mobile communications/general packet radio service) networks, an improved channel allocation scheme, DMC_DRA, was proposed, and its performances were analyzed. The new scheme may dynamically changes the minimum number of channels for a GPRS packet. In this way a compromise between FRA and DRA may be achieved to have better comprehensive performances such as channel utilization efficiency, packet transfer time and call blocking probability.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2004年第4期481-484,共4页
Journal of Southwest Jiaotong University
基金
国家自然科学基金资助项目(60218001)
