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随着3G移动互联网业务的发展,移动网络基站接口逐步呈现高速化、IP化趋势,在传统SDH网络无法满足基站承载需求的情况下,利用IP无线接入网(IPRAN)来实现3G移动基站承载已经成为技术演进方向。从节省网络投资成本及考虑到SDH网络现状等因素提出了利用城域网MPLS VPN及以太无源光网络接入技术来实现基站语音及数据业务的回传,探讨了基站回传组网中的各种安全保护技术,并通过现网测试验证了EPON接入技术承载基站回传业务的可行性。
With the development of 3G mobile Internet services, the interface of mobile network base station gradually shows high-speed and IP-based trend. When the traditional SDH network can not meet the requirements of base station bearer, IP mobile radio network bears the promise of using IP radio access network (IPRAN) Has become the direction of technological evolution. From the point of saving the cost of network investment and taking into account the current situation of SDH network and other factors, it is proposed to utilize the metropolitan area network MPLS VPN and the Ethernet passive optical network access technology to realize the return of the voice and data services of the base station, Various security protection technologies, and verified the feasibility of EPON access technology carrying backhaul services of base stations through live network tests.