计算机工程与设计
計算機工程與設計
계산궤공정여설계
COMPUTER ENGINEERING AND DESIGN
2015年
8期
2040-2044,2068
,共6页
移动通信%卫星通信%小区间协作%紧耦合模式切换%无线通信系统
移動通信%衛星通信%小區間協作%緊耦閤模式切換%無線通信繫統
이동통신%위성통신%소구간협작%긴우합모식절환%무선통신계통
mobile communication%satellite communication%inter-cell collaboration%tight-coupling mode handover%wireless communication system
在卫星移动通信领域提出一种基于小区间协作的切换方法。允许服务小区向相邻小区申请随机接入信道资源，使终端保持与服务小区连接的同时，向邻区发起随机接入过程，获取上行同步配置信息；随后的切换中，终端只需完成与目标小区的下行同步，即可在预订时间内启动无线传输；结合LTE技术阐述该方法的具体实施方式。分析结果表明，该方法显著缩短了长时延无线信道条件下切换造成的用户业务中断时间。
在衛星移動通信領域提齣一種基于小區間協作的切換方法。允許服務小區嚮相鄰小區申請隨機接入信道資源，使終耑保持與服務小區連接的同時，嚮鄰區髮起隨機接入過程，穫取上行同步配置信息；隨後的切換中，終耑隻需完成與目標小區的下行同步，即可在預訂時間內啟動無線傳輸；結閤LTE技術闡述該方法的具體實施方式。分析結果錶明，該方法顯著縮短瞭長時延無線信道條件下切換造成的用戶業務中斷時間。
재위성이동통신영역제출일충기우소구간협작적절환방법。윤허복무소구향상린소구신청수궤접입신도자원，사종단보지여복무소구련접적동시，향린구발기수궤접입과정，획취상행동보배치신식；수후적절환중，종단지수완성여목표소구적하행동보，즉가재예정시간내계동무선전수；결합LTE기술천술해방법적구체실시방식。분석결과표명，해방법현저축단료장시연무선신도조건하절환조성적용호업무중단시간。
An inter-cell collaboration based handover scheme was proposed for satellite mobile communication system.A cell could request random access channel resource from neighbor cell for its serving terminal,therefore the terminal acquired uplink synchronization configuration of the neighbor cell by performing random access procedure with such resource.In subsequent han-dover,the terminal started uplink transmission within a specified duration after its downlink synchronization with target cell achieved.Moreover,an implementation way of this method was illustrated in the context of LTE system.The method can effec-tively reduce the service interruption time during handover,especially under the condition of wireless channel with big propaga-tion delay.
