基于优先级信道预留的快速动态信道分配算法  

Fast dynamic channel allocation algorithm based on priority channel reservation

作　　者：石文孝[1] 赵俊[1] 迟学芬[1] 李娜[1] 

机构地区：[1]吉林大学通信工程学院,吉林长春130012

出　　处：《通信学报》2009年第7期59-66,共8页Journal on Communications

基　　金：吉林省科技发展计划基金资助项目(20070526)~~

摘　　要：针对TD-SCDMA系统现有快速动态信道分配算法的不足,提出了一种基于优先级信道预留的快速动态信道分配算法。该算法根据接力切换用户的移动台属性设定不同的优先级,为接力切换呼叫预留信道,结合小分组借用算法,增加了可移动边界动态信道分配(MBDCA)策略的灵活性。仿真结果表明,此算法相对于混合数据速率、小分组借用(MRG,mixed-data rate grouping borrowed)MB DCA算法,实现了VIP和快速移动切换用户的优先接入,有效地降低了切换呼叫的阻塞率,提高了数据业务性能和系统的信道利用率。Aiming at overcoming the shortages of the current fast dynamic channel allocation algorithm in TD-SCDMA system, a novel fast dynamic channel allocation algorithm based on priority channel reservation was proposed. This algorithrn defined call priority by equipment attribution of baton handover user, reserved channels for baton handover calls. Combining with grouping borrowed algorithm, the algorithm made MB DCA strategy more flexible. Simulation results show that, comparing to the mixed-data rate grouping borrowed algorithm, the proposed algorithm achieves the preferential access of VIP and high rate mobile user, reduces the call failure probability resulted from the baton handover, improves the performance of data service, and increases the channel utilization efficiency.

关 键 词：TD-SCDMA 动态信道分配 接力切换 MB策略 优先级 

分 类 号：TN929.53[电子电信—通信与信息系统]