北京邮电大学学报
北京郵電大學學報
북경유전대학학보
JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
2009年
5期
20-23
,共4页
异构无线网络%信道分配%信道借用%呼叫阻塞率
異構無線網絡%信道分配%信道藉用%呼叫阻塞率
이구무선망락%신도분배%신도차용%호규조새솔
heterogeneous wireless network%channel allocation%channel borrowing%blocking proba-bility
为解决频谱资源日益紧张的问题,基于IEEE802.11无线局域网(WLAN)和时分同步码分多址(TD-SCDMA)技术构建的异构网络模型,考虑了异构无线网络下信道借用的条件,提出了一种新的基于预测的信道垂直借用方案及其算法.该算法在借鉴信道水平借用策略的基础上,引入信道预留机制并增加了信道借用预测算法.仿真结果表明,该方案可有效降低呼叫阻塞率,改善系统性能.
為解決頻譜資源日益緊張的問題,基于IEEE802.11無線跼域網(WLAN)和時分同步碼分多阯(TD-SCDMA)技術構建的異構網絡模型,攷慮瞭異構無線網絡下信道藉用的條件,提齣瞭一種新的基于預測的信道垂直藉用方案及其算法.該算法在藉鑒信道水平藉用策略的基礎上,引入信道預留機製併增加瞭信道藉用預測算法.倣真結果錶明,該方案可有效降低呼叫阻塞率,改善繫統性能.
위해결빈보자원일익긴장적문제,기우IEEE802.11무선국역망(WLAN)화시분동보마분다지(TD-SCDMA)기술구건적이구망락모형,고필료이구무선망락하신도차용적조건,제출료일충신적기우예측적신도수직차용방안급기산법.해산법재차감신도수평차용책략적기출상,인입신도예류궤제병증가료신도차용예측산법.방진결과표명,해방안가유효강저호규조새솔,개선계통성능.
A prediction algorithm based channel borrowing scheme on heterogeneous wireless network model composed of IEEE802. 11 wireless local area network (WLAN) and time division-synchronous code division multiple access(TD-SCDMA)is proposed to solve the problem of spectrum shortage. The scheme refers to current horizontal channel borrowing strategy and proposes a channel reserved mechanism with channel borrowing prediction algorithm. Performance simulation shows that this scheme can efficiently decrease blocking probability and improve system performance.
