Content for TS 26.454 Word version: 18.0.0
5 RAB aspects
6 Iu Interface User Plane (RAN-CN)
7 Uu Interface User Plane (UE-RAN)
8 Nb Interface User Plane (CN-CN) of a BICC-based CS Core Network (NbF)
9 Nb Interface User Plane (CN-CN) of a SIP-I-based CS Core Network (NboIP)
10 Mb Interface User Plane
11 Interworking between MGW Terminations
$ Change history
5 RAB aspects p. 9
6 Iu Interface User Plane (RAN-CN) p. 10
6.1 Frame structure on the Iu UP transport protocol p. 10
6.2 Mapping of the bits p. 11
6.3 Frame handlers p. 13
6.3.0 General p. 13
6.3.1 Handling of frames from TC to Iu interface (downlink) p. 14
6.3.1.0 General p. 14
6.3.1.1 Frame Quality Classification p. 14
6.3.1.2 Frame size p. 14
6.3.1.3 Codec Mode Indication p. 14
6.3.1.4 EVS Codec Mode Request and Rate Control Command in downlink p. 14
6.3.1.5 Optional internal 8 bits CRC p. 14
6.3.1.6 Mapping of Speech or SID bits p. 14
6.3.2 Handling of frames from Iu interface to TC (uplink) p. 14
7 Uu Interface User Plane (UE-RAN) p. 17
7.1 General p. 17
7.2 Determination of the local EVS encoding mode p. 19
7.3 Generation of UL EVS-CMR for the remote media-sender p. 20
7.4 Interworking in case of the EVS Channel Aware Mode p. 20
8 Nb Interface User Plane (CN-CN) of a BICC-based CS Core Network (NbF) p. 20
8.0 General p. 20
8.1 Frame structure on the Nb UP transport protocol p. 21
8.1.0 General p. 21
8.1.1 Initialisation p. 21
8.1.2 Time Alignment Procedure p. 21
8.1.3 SID Frame Generation p. 21
8.1.4 Rate and Mode Control and CMR-Only frames p. 21
8.2 Mapping of the EVS bits p. 21
8.3 Frame handlers p. 21
9 Nb Interface User Plane (CN-CN) of a SIP-I-based CS Core Network (NboIP) p. 22
9.1 General p. 22
9.2 Frame Structure p. 22
9.2.0 General p. 22
9.2.1 Initialisation p. 22
9.2.2 Time Alignment Procedure p. 22
9.2.3 SID Frame Generation p. 22
9.2.4 Rate and Mode Control and CMR-Only frames p. 22
9.3 RTP Packing for EVS on Nb for SIP-I p. 22
10 Mb Interface User Plane p. 23
10.1 Overview p. 23
10.2 RTP packing on the Mb Interface p. 23
10.3 Rate and mode control for EVS on Mb p. 24
11 Interworking between MGW Terminations p. 24
11.1 Interworking between different EVS Configurations p. 24
11.1.0 General p. 24
11.1.1 Interworking between EVS Bottom Up Configurations p. 25
11.1.2 Interworking between Single Band Configurations p. 25
11.1.3 Interworking between Bottom Up and Single Band Configurations p. 26
11.1.4 Interworking between Bottom Up and Non-Bottom Up Configurations p. 26
11.2 Handling of Speech and SID payload p. 26
11.2.1 Handling of Speech and SID payload during the call p. 26
11.2.1.1 Repacking between Iu and Nb (BICC) p. 26
11.2.1.2 Repacking between Iu and Nb (SIP-I) p. 26
11.2.1.2.1 General p. 26
11.2.1.2.2 Repacking from Iu to Nb (SIP-I) p. 27
11.2.1.2.3 Repacking from Nb (SIP-I) to Iu p. 27
11.2.1.3 Repacking between Nb (BICC) and Mb p. 27
11.2.2 Handling of Speech and SID payload at call setup p. 27
11.3 Filtering and Modification of EVS-CMR by the MGW p. 27
11.3.0 General p. 27
11.3.1 Maximum Mode Control for EVS in general p. 28
11.3.2 Maximum Mode Control for the EVS Channel Aware mode p. 28
11.3.3 Maximum Mode Control for the EVS Variable Bit Rate mode p. 28
11.3.4 Maximum Mode Control for Handover p. 28
11.4 Interworking between Nb and Mb p. 29
11.4.1 Interworking for EVS Rate Control p. 29
11.4.1.1 General p. 29
11.4.1.2 RTP on Mb contains one Speech or one SID frame p. 29
11.4.1.3 RTP on Mb contains N Speech or SID frames p. 30
11.4.2 Interworking for Discontinuous Transmission p. 30
11.5 Interworking between EVS and AMR-WB p. 30
11.6 Interworking for the EVS Channel Aware Mode p. 31
$ Change history p. 34
