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美利体育登录入口官网:ETSI TR 143 903-2016
数字蜂窝电信系统（2+阶段）； A-interface over IP 研究（AINTIP）（V13.0.0；3GPP TR 43.903 版本 13.0.0 第 13 版）

Digital cellular telecommunications system (Phase 2+); A-interface over IP study (AINTIP) (V13.0.0; 3GPP TR 43.903 version 13.0.0 Release 13)

被代替

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标准号

ETSI TR 143 903-2016

发布

2016年

总页数

64页

发布单位

欧洲电信标准协会

替代标准

ETSI TR 143 903-2017

当前最新

ETSI TR 143 903-2024

 

 

引用标准

3GPP TR 21.905 3GPP TS 23.002 3GPP TS 23.153 3GPP TS 23.205 3GPP TS 25.415 3GPP TS 26.093 3GPP TS 26.103 3GPP TS 28.062 3GPP TS 29.414 3GPP TS 29.415 3GPP TS 48.006 3GPP TS 48.008 3GPP TS 48.060 3GPP TS 48.061

 

 

本体

A接口

适用范围

The present document contains the result from the study of introduction of support for A-interface over IP. High level areas that are studied are e.g. potential placement of transcoders in the core network, effective bandwidth utilisation at the A-interface, impact on call related messages, payload formats. The following items shall be covered in the study: In the target solution it is wanted to transfer compressed speech as far as possible end-to-end to achieve efficient transport and speech quality. The possibility to free GERAN from handling all kind of transcoders shall be studied, and the architecture might place Codecs in the core network. Impacts/changes on current A-interface procedures resulting from placing transcoders in the core network as well as in the BSS shall be studied, e.g. impacts on the assignment and handover procedures. In addition to allow compressed speech over the A-interface the study shall provide further solution for effective bandwidth utilisation at the A interface, which means it shall describe multiplexing of RTP flows and how this will be negotiated between the BSS and CN nodes. The study shall describe a solution for "true end-to-end Codec negotiation", which considers on a call basis the preference/situation of the radio network. It shall be studied how call related messages have to be adapted, e.g. transfer of Codec related information, identification of calls/sessions. The study shall describe the wanted payload formats and other relevant user plane parameters like packetization time etc.

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