TR 25.905
Feasibility study on improvement of the
Multimedia Broadcast/Multicast Service (MBMS) in UTRAN
V7.2.0 (PDF)
2008/01 50 p.
- Rapporteur:
- Mr. Lee, Youngdae
full Table of Contents for TR 25.905 Word version: 7.2.0
1 Scope Word‑p. 6
The present document summarizes the work done under the study item "Improvement of the Multimedia Broadcast Multicast Service (MBMS) in UTRAN" defined in [1] by listing technical concepts addressing the objectives of the study item, analysing these technical concepts and recommending a way forward of the study item.
2 References Word‑p. 6
3 Definitions, symbols and abbreviations Word‑p. 6
4 Introduction Word‑p. 7
5 Outline of proposals Word‑p. 7
5.1 Dual receiver UEs Word‑p. 7
5.1.1 FDD + WCDMA DL Word‑p. 7
5.1.1.1 UE capabilities Word‑p. 7
5.1.1.2 Scenario 1: MBMS multicarrier Rel-6 network: Word‑p. 8
5.1.1.3 Scenario 2: MBMS multicarrier Rel-6 network + optimisations for Rel-7 dual receiver UEs Word‑p. 8
5.1.1.4 Scenario 3: Rel-6 network (single carrier or multicarrier) + separate independent MBMS downlink only frequency for Rel-7 dual receiver UEs (FDD) Word‑p. 8
5.1.1.5 Architecture Word‑p. 9
5.1.2 FDD + TD-CDMA DL Word‑p. 10
5.1.2.1 UE capability requirements for support of MBMS Word‑p. 10
5.1.2.2 Backwards compatibility Word‑p. 11
5.1.2.3 Simultaneous TDD and FDD operation Word‑p. 11
5.1.2.3.1 Dual receiver requirements Word‑p. 11
5.1.2.3.2 FDD transmit and TDD receive operation Word‑p. 11
5.1.2.4 Scenarios Word‑p. 12
5.1.2.4.1 Scenario 1: Non-integrated RAN Word‑p. 12
5.1.2.4.2 Scenario 2: Integrated RAN Word‑p. 12
5.1.3 LCR TDD + LCR TDD DL Word‑p. 12
5.1.3.1 UE capability requirements Word‑p. 13
5.1.3.2 Scenarios Word‑p. 13
5.1.3.2.1 Scenario 1: TDD + TDD DL Word‑p. 13
5.1.3.2.2 Scenario 2: TDD + Multicarrier TDD DL Word‑p. 13
5.1.3.2.3 Scenario 3: TDD + (Multicarrier) TDD DL Word‑p. 13
5.1.3.3 System architecture Word‑p. 14
5.1.3.4 Backwards compatibility Word‑p. 14
5.1.3.5 Dual receiver requirements Word‑p. 14
5.2 SFN operation for MBMS Word‑p. 15
5.2.1 Time multiplexing of MBMS SFN with unicast carrier Word‑p. 15
5.2.2 SFN MBMS for auxiliary carrier Word‑p. 15
5.2.2.1 Single/Dual Receiver Aspects Word‑p. 16
5.2.3 SFN operation with transmission delay offset Word‑p. 16
5.3 Chip Combining (1.28 Mcps TDD) Word‑p. 16
6 Analysis of the proposals Word‑p. 17
6.1 Dual receiver UEs Word‑p. 17
6.1.1 FDD + WCDMA DL Word‑p. 17
6.1.1.1 Scenario 1: MBMS multicarrier Rel-6 network: Word‑p. 17
6.1.1.1.1 Impact Word‑p. 17
6.1.1.1.2 Analysis of the dual receiver UE behaviour Word‑p. 17
6.1.1.1.3 Backwards compatibility Word‑p. 17
6.1.1.2 Scenario 2: MBMS multicarrier Rel-6 network + optimisations for Rel-7 dual receiver UEs Word‑p. 18
6.1.1.2.1 Impact Word‑p. 18
6.1.1.2.2 Analysis of the dual receiver UE behaviour Word‑p. 18
6.1.1.2.3 Backwards compatibility Word‑p. 18
6.1.1.3 Scenario 3: Rel-6 network (single carrier or multicarrier) + separate independent MBMS downlink only frequency for Rel-7 dual receiver UEs (FDD) Word‑p. 18
6.1.1.3.1 Impact Word‑p. 18
6.1.1.3.2 Analysis of the dual receiver UE behaviour Word‑p. 19
6.1.1.3.3 Backwards compatibility Word‑p. 19
6.1.2 FDD + TD-CDMA DL Word‑p. 19
6.1.2.1 Scenario 1: Non-integrated RAN Word‑p. 19
6.1.2.1.1 Architecture/network implication Word‑p. 20
6.1.2.1.2 Functions and procedures Word‑p. 21
6.1.2.1.3 Support of service continuity Word‑p. 23
6.1.2.1.3.1 Mobility in intra-TDD cells Word‑p. 23
6.1.2.1.3.2 Support of service continuity Word‑p. 23
6.1.2.1.3.3 Service continuity in pre-Rel.6 FDD UTRAN Word‑p. 24
6.1.2.1.3.4 Service continuity in Rel.6 FDD UTRAN Word‑p. 24
6.1.2.1.4 Connection state of the UE Word‑p. 25
6.1.2.1.5 Specification Impacts Word‑p. 25
6.1.2.1.6 Benefits and drawbacks Word‑p. 25
6.1.2.2 Scenario 2: Integrated RAN Word‑p. 26
6.1.2.2.1 Architecture/network implication Word‑p. 27
6.1.2.2.1.1 Integrated RAN based on Rel.6 MBMS framework Word‑p. 27
6.1.2.2.1.2 Integrated RAN, using the "one tunnel" approach Word‑p. 29
6.1.2.2.2 Functions and procedures Word‑p. 31
6.1.2.2.3 Support of service continuity Word‑p. 34
6.1.2.2.4 Connection state of the UE Word‑p. 35
6.1.2.2.5 Specification Impacts Word‑p. 35
6.1.2.2.6 Benefits and drawbacks Word‑p. 36
6.1.2a LCR TDD + LCR TDD DL Word‑p. 36
6.1.2a.1 Scenario 1: TDD + TDD DL Word‑p. 36
6.1.2a.1.1 Analysis of functions Word‑p. 36
6.1.2a.1.2 Specification impacts Word‑p. 37
6.1.2a.1.3 Evaluation Word‑p. 37
6.1.2a.2 Scenario 2: TDD + Multicarrier TDD DL Word‑p. 37
6.1.2a.2.1 Analysis of functions Word‑p. 37
6.1.2a.2.2 Specification impacts Word‑p. 37
6.1.2a.2.3 Evaluation Word‑p. 38
6.1.2a.3 Scenario 3: TDD + Multicarrier TDD DL Word‑p. 38
6.1.2a.3.1 Analysis of functions Word‑p. 38
6.1.2a.3.2 Specification impacts Word‑p. 38
6.1.2a.3.3 Evaluation Word‑p. 39
6.1.3 Interference considerations for simultaneous operation of unicast and MBMS auxiliary carrier Word‑p. 39
6.1.3.1 Solution 1: Allow a guard band between paired the UL carrier and the unpaired MBMS carrier Word‑p. 39
6.1.3.2 Solution 2: Smart scheduling Word‑p. 39
6.1.3.3 Solution 3: GSM fallback for MBMS dedicated frequency Word‑p. 39
6.1.4 RF Aspects of Re-configuration of Rx diversity terminal to support two independent frequency layers Word‑p. 40
6.2 SFN operation for MBMS Word‑p. 40
6.2.1 TD-CDMA - Time multiplexing of MBMS with unicast carrier Word‑p. 40
6.2.1A 1.28 Mcps TDD - Time multiplexing of MBMS with unicast carrier Word‑p. 41
6.2.2 TD-CDMA - MBMS for auxiliary carrier Word‑p. 41
6.2.2A 1.28 Mcps TDD - MBMS for dedicated carrier Word‑p. 42
6.2.3 MBMS dedicated carrier with SFN operations - Study 1 (FDD) Word‑p. 42
6.2.3.1 Simulation assumptions and physical channel conditions Word‑p. 42
6.2.3.2 Spectral efficiency Word‑p. 43
6.2.4 MBMS dedicated carrier with SFN operations - Study 2 (FDD) Word‑p. 43
6.2.4.1 Simulation assumptions and physical channel conditions Word‑p. 43
6.2.4.2 Spectral efficiency Word‑p. 44
7 Conclusions and Recommendations Word‑p. 45
7.1 Conclusions Word‑p. 45
7.1.1 Dual receiver UEs Word‑p. 45
7.1.2 Network architecture considerations for separate MBMS carrier Word‑p. 45
7.1.3 SFN operation for MBMS Word‑p. 45
$ Change history Word‑p. 47
