行動專線電路於固網傳輸網路之規劃及改善

行動語音服務除經由基地台無線電傳輸外,亦同時經由固網傳輸網路來提供傳輸.而行動交換機房的訊令及話務亦同時經由傳輸光纖網路來傳輸,所以行動專線電路品質的好壞同時影響基站話務品質。當傳輸網路遇到突發雙斷常造成大量基站電路斷線,例如颱風,土石流等,而保護路由已暫無法提供保護,需待線路維護維修人員搶修後方能恢復。因此固網傳輸網路的保護機制亦同時影響基站的服務. 本論文之目的除規劃行動電路專屬的傳輸網路外,並模擬行動服務所需之話務.以提供較佳之保護機制,同時,提出對於行動專線電路於現有固網傳輸網路之改善方法。

關鍵字

自動交換光網絡；行動專線電路；同步數位階層；近似同步數位階層

並列摘要

The mobile phone service is not only transmitted by radio frequency from base station, it is also transmitted by fixed optical transmission network. The signaling and traffic of MSC exchanges are also transmitted on optical transmission network. Therefore, we have to consider not only the coverage of the base station but also the quality of transmission optical network. When backbone or regional network encounter double failures like fiber cables break or equipment failures, it will cause a lot of base stations disconnected to BSC and lose connection with customer’s mobile phone. At this time, the protection of rings are not able to work properly. We have to wait until one failure is repaired by the field engineer. Hence, the method of protection schemes really matter the service of mobile phone as well. This thesis presents the planning and improvement of the CDMA transmission network for mobile phone services. We investigate the traffic of mobile phone service in order to achieve better path protection in mobile cellular network. MS-SPRING+SNCP method and ASON PRC+GR method are proposed to improve the efficiency of current transmission network.

並列關鍵字

SDH ； ASON ； GMPLS ； MS-SPRING ； SNCP ； RESTORATION ； PDH ； CDMA

參考文獻

[7] N. Hua, X. Zheng, H. Zhang and B. Zhou, “Design and Implementation of a Network Node Management System for a Large-Scale ASON Test- Bed,” Tsinghua Univ., Beijing, 2007

[8] Http://en.wikipedia.org/wiki/Automatically_switched_optical_network, “Automatically switched optical network”.

[17] 黃勇嘉, “行動網路專線電路之調訂路由選擇, ” 中山大學碩士論文, 2007.

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