TR 143 903-2018
Digital cellular telecommunications system (Phase 2+) (GSM); A-interface over IP study (AINTIP) (V15.0.0; 3GPP TR 43.903 version 15.0.0 Release 15)

Standard No.

TR 143 903-2018

Release Date

2018

Published By

ETSI - European Telecommunications Standards Institute

Latest

TR 143 903-2018

Scope

"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."

TR 143 903-2018 history

• 2018 TR 143 903-2018 Digital cellular telecommunications system (Phase 2+) (GSM); A-interface over IP study (AINTIP) (V15.0.0; 3GPP TR 43.903 version 15.0.0 Release 15)
• 2017 TR 143 903-2017 Digital cellular telecommunications system (Phase 2+) (GSM); A-interface over IP study (AINTIP) (V14.0.0; 3GPP TR 43.903 version 14.0.0 Release 14)
• 2016 TR 143 903-2016 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)
• 2014 TR 143 903-2014 Digital cellular telecommunications system (Phase 2+); A-interface over IP study (AINTIP) (V12.0.0; 3GPP TR 43.903 version 12.0.0 Release 12)
• 2012 TR 143 903-2012 Digital cellular telecommunications system (Phase 2+); A-interface over IP study (AINTIP) (V11.0.0; 3GPP TR 43.903 version 11.0.0 Release 11)
• 2011 TR 143 903-2011 Digital cellular telecommunications system (Phase 2+); A-interface over IP study (AINTIP) (V10.0.0; 3GPP TR 43.903 version 10.0.0 Release 10)
• 2010 TR 143 903-2010 Digital cellular telecommunications system (Phase 2+); A-interface over IP study (AINTIP) (V9.0.0; 3GPP TR 43.903 version 9.0.0 Release 9)
• 2009 TR 143 903-2009 Digital cellular telecommunications system (Phase 2+); A-interface over IP study (AINTIP) (V8.3.0; 3GPP TR 43.903 version 8.3.0 Release 8)