基于SHDSL的IAD接入技术

IAD access technology based on SHDSL

单线对高比特率数字用户线(SHDSL)支持利用现有铜线对进行上、下行速率对称的宽带数据接入(在相类似的技术中,其性能最佳)。综合接入设备(IAD)完成各种网络终端的统一接入,并将这些话音、数据等多种业务融合在一起,统一实现各自的功能。将这两项技术完美地结合,可为NGN提供一种全新地宽带接入方式。文章主要分析了基于SHDSL的IAD接入的网络结构、SHDSL功能模型、用户数据的映射和封装,以及基于SHDSL的IAD技术应用前景。

SHDSL supports and utilizes the existing copper wire pair to transmit the broadband data that the downstream and upstream are symmetrical, （in similar technology, its performance is the best）. IAD finish the access unification for different network terminal stations, merge multi-services together, such as speech, data etc. , realize respective own functions. Combine these two technologies perfectly, can offer a new broadband access way for NGN. The article mainly analyzes the SHDSL-based IAD network structure, SHDSL function model, the mapping and encapsulation of user＇s data, and SHDSL-based IAD technical application prospect.