摘要
无疑无线通信是通信领域发展最快的部分，同时通信发展越来越呈现出传输宽带化、业务多样化的趋势，而当以光通信为基础的核心网已经具备超高速、超容量的特征时，接入网建设就成为电信网必须解决的瓶颈。
Obviously wireless communication is the part which develops the fastest in communication field, meanwhile communication industry tends to development toward broadband transmission and multiple services, and when core networks with optical communication as the basis are provided with features of superhigh speed and super capacity, construction of broadband access network has become the bottleneck that telecom network shall solve.
