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Content for  TS 23.202  Word version:  18.0.0

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5 Bearer Capabilities for UMTS Data Services  5.1 Bearer Capabilities for UMTS Data Services  5.2 BC-IE to RAB QoS Mapping  6 Iu and Nb User Plane  6.1 NT services  6.2 T services  7 RLC  8 Initial Synchronisation and resynchronisation  9 Call Control  10 Handover Issues  10.1 Signalling issues  10.2 User Plane  $ Change history 

 

5  Bearer Capabilities for UMTS Data Services  p. 11

The UMTS bearer services are described by the PLMN BC-IE. Five services (or services categories) are currently distinguishable from the PLMN BC-IE in UTRAN Iu mode:
  • Speech.
  • Transparent Data for support of Multimedia.
  • Transparent Data.
  • Non-transparent Fax.
  • Non-transparent data.
Four services (or services categories) are currently distinguishable from the PLMN BC-IE in GERAN Iu mode:
  • Speech.
  • Transparent Data for support of Multimedia.
  • Transparent Data.
  • Non-transparent data.
Speech is currently not in the scope of the present document.
Each UMTS bearer service is supported by a Radio Access Bearers (RAB). The RABs in turn are described by the QoS parameters. There may be one or several RAB candidates for supporting a UMTS bearer service. The possible candidates are described by a mapping of the BC-IE to RAB QoS described in subclause 5.2.
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5.1  Bearer Capabilities for UMTS Data Services  p. 12

5.1.1  Transparent Data  p. 12

This service is distinguished by the following BC-IE parameters:
  • ITC = UDI or 3.1 kHz audio or Other ITC = RDI.
  • CE = transparent.
For this service the FNUR at the setup is restricted to:
  • 64 kbit/s, in case ITC = UDI.
  • 56 kbit/s in case ITC = UDI or Other ITC = RDI.
  • 28,8 kbit/s, in case ITC = 3,1 kHz audio.

5.1.2  Non-Transparent Fax  p. 12

This service is only applicable for UTRAN Iu mode. It is distinguished by the following BC-IE parameters:
  • ITC = Fax Group 3 (ITU-T Recommandation T.30 [17]).
  • CE = non-transparent.
WAIUR shall not be more than 28.8 kbit/s. The possible AIURs are limited to 14,4 kbit/s and 28,8 kbit/s.

5.1.3  NT Data  p. 12

This service is distinguished by the following BC-IE parameters:
  • ITC = UDI or 3.1 kHz audio or Other ITC = RDI.
  • CE = non-transparent.
The possible AIURs in UTRAN Iu mode are limited to 14,4 kbit/s, 28,8 kbit/s and 57,6 kbit/s. For GERAN Iu mode the following AIURs are possible: 9,6 kbit/s, 14,4 kbit/s, 19,2 kbit/s, 28,8 kbit/s, 38,4 kbit/s, 43,2 kbit/s and 57,6 kbit/s.

5.1.4  Transparent Data for Support of Multimedia  p. 12

This service is distinguished by the following BC-IE parameters:
  • ITC = UDI or 3.1 kHz audio or Other ITC = RDI.
  • CE = transparent.
  • Other rate adaptation = H.223 and H.245.
For this service the FNUR at the setup is restricted to:
  • 64 kbit/s, in case ITC = UDI.
  • 56 kbit/s in case Other ITC = RDI.
  • 33,6 kbit/s, in case ITC = 3,1 kHz audio.
  • 32 kbit/s, in case ITC = UDI.
  • 28,8 kbit/s, in case ITC = 3,1 kHz audio.
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5.2  BC-IE to RAB QoS Mapping  p. 13

Since UMTS bearer services are described by BC-IEs and RABs by QoS parameters, a mapping between the UMTS bearer services and the possible RABs that support them has to be specified. The QoS mapping is based on TS 23.107 and is specified in detail in TS 27.001, Annex B, subclause B.1.13.
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6  Iu and Nb User Plane  p. 14

6.1  NT services  p. 14

The Iu and NB User Plane for NT services is described in clause 11a.2 of TS 29.007.

6.2  T services  p. 14

The Iu and NB User Plane for T services is described in clause 11a.3 of TS 29.007.

7  RLC  p. 14

The RLC shall be used in transparent mode for T and NT services.

8  Initial Synchronisation and resynchronisation  p. 14

The initial synchronisation and actions on loss of synchronisation are specified in TS 27.001 and TS 29.007.

9  Call Control  p. 14

BC-IE negotiation procedures and mapping to ISDN are specified in TS 27.001 and TS 29.007. BC-IE parameter values shall be restricted as indicated in subclause 5.1. See also TS 27.001, Annex B, Table B.5a for further details on the validity of parameter values in A/Gb mode and Iu mode.
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10  Handover Issues  p. 14

10.1  Signalling issues  p. 14

The handling of signalling during handover is described in clause 11.0 of TS 29.007.

10.2  User Plane  p. 14

The handling of the user plane during handover is described in clause 11 of TS 29.007.

$  Change history  p. 15

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