邮电设计技术
郵電設計技術
유전설계기술
Designing Techniques of Posts and Telecommunications
2015年
11期
7-10
,共4页
通用公共无线电接口%移动前传%波分复用无源光网络
通用公共無線電接口%移動前傳%波分複用無源光網絡
통용공공무선전접구%이동전전%파분복용무원광망락
CPRI%Fronthaul%WDM-PON
由于4G频谱的特性和流量增长需求,C-RAN网络结构已成为LTE网络发展的必然趋势,同时也对承载网提出了更高的要求。目前C-RAN承载即LTE前传主要采用裸光纤承载,随着C-RAN大规模建设,单纯以裸光纤承载方式很难满足BBU至RRU的大量CPRI链路需求,因此通过承载设备满足前传需求、提升光纤利用率已成为业界关注的焦点。简要描述了CPRI承载方案,并对各承载方案的性能指标进行验证,最后对各方案性能指标进行对比分析。
由于4G頻譜的特性和流量增長需求,C-RAN網絡結構已成為LTE網絡髮展的必然趨勢,同時也對承載網提齣瞭更高的要求。目前C-RAN承載即LTE前傳主要採用裸光纖承載,隨著C-RAN大規模建設,單純以裸光纖承載方式很難滿足BBU至RRU的大量CPRI鏈路需求,因此通過承載設備滿足前傳需求、提升光纖利用率已成為業界關註的焦點。簡要描述瞭CPRI承載方案,併對各承載方案的性能指標進行驗證,最後對各方案性能指標進行對比分析。
유우4G빈보적특성화류량증장수구,C-RAN망락결구이성위LTE망락발전적필연추세,동시야대승재망제출료경고적요구。목전C-RAN승재즉LTE전전주요채용라광섬승재,수착C-RAN대규모건설,단순이라광섬승재방식흔난만족BBU지RRU적대량CPRI련로수구,인차통과승재설비만족전전수구、제승광섬이용솔이성위업계관주적초점。간요묘술료CPRI승재방안,병대각승재방안적성능지표진행험증,최후대각방안성능지표진행대비분석。
Because of 4G spectrum characteristics and traffic growth requirements,C-RAN network architecture has become an inevita-ble trend of LTE network. Therefore,high requirements for transport network is presented. LTE fronthaul is mainly carried by the bare optical fiber. With the large scale constructing of C-RAN,it is difficult to satisfy so many CPRI link requirements,so how to use transport equipment to enhance the fiber utilization ratio has become the focus of the industry. It briefly describes the CPRI transport schemes,and the index for each scheme has been tested,and final y the test results are analyzed.