12.40 MBMS Session Parameters List

3GPP44.060General Packet Radio Service (GPRS)Mobile Station (MS) - Base Station System (BSS) interfaceRadio Link Control / Medium Access Control (RLC/MAC) protocolRelease 17TS

The MBMS Session Parameters List contains a list of MBMS Bearer IDs, Estimated Session Durations, MBMS Radio Bearer Starting Times, EGPRS Windows Sizes and NPM Transfer Times.

Table 12.40.1: MBMS Session Parameters List information element

< MBMS Session Parameters List IE > ::=

{ 1 < Length of MBMS Bearer Identity : bit (3) > — Configurations ’000’, ‘110’ and ‘111’ are reserved

< MBMS Bearer Identity : bit (val (Length of MBMS Bearer Identity)) >

< Estimated Session Duration : bit (8) >

{ 0 | 1 < MBMS Radio Bearer Starting Time : bit (16) > }

{ 0 | 1 < EGPRS Window Size : < EGPRS Window Size IE >> }

{ 0 | 1 < NPM Transfer Time : bit (5) > } } ** 0;

Table 12.40.2: MBMS Session Parameters List information element details

Length of MBMS Bearer Identity (3 bit field)
This field indicates the length of the MBMS Bearer Identity for the concerned MBMS session. Any value from 1 to 5 inclusive is allowed. All other values are reserved.

MBMS Bearer Identity (1-5 bit field)
This field contains the Bearer identity for the concerned MBMS session. This information element is defined in sub-clause 12.34.

Estimated Session Duration (8 bit field)
This field contains an estimation of either the duration for the concerned MBMS session or, if the MBMS session is ongoing, the remaining duration for the concerned MBMS session. This information element is defined in sub-clause 12.44.

MBMS Radio Bearer Starting Time (16 bit field)
This field contains a starting time that indicates the frame number from which the data transfer on the assigned MBMS radio bearer may start for the concerned MBMS session. The MBMS Radio Bearer Starting Time is encoded as the value part of the type 3 information element Starting Time in 3GPP TS 44.018.

EGPRS Window Size
This information element defines the EGPRS Window Size for the concerned MBMS session and is defined in sub-clause 12.5.2.

NPM Transfer Time (5 bit field)

This field defines the NPM Transfer Time limitation for the concerned MBMS session and is defined in sub-clause 12.45a.