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Content for TR 26.851 Word version: 11.2.0

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5 Download Delivery Enhancements for MBMS (EMM-DDE) p. 8

5.1 Introduction p. 8

5.2 Use Cases, Recommended Requirements and Assumptions p. 9

5.2.1 Use Case#1: Continuity between MBMS Download and HTTP-based Delivery of DASH-Formatted Content p. 9

5.2.1.1 Recommended Requirements p. 9

5.2.1.2 Assumptions p. 10

5.2.2 Use Case#2: Multiplexed User Services p. 10

5.2.2.1 Recommended Requirements p. 10

5.2.2.2 Assumptions p. 10

5.2.3 Use Case#3: Separated User Services p. 10

5.2.3.1 Recommended Requirements p. 10

5.2.3.2 Assumptions p. 10

5.2.4 Use Case#4: Location-based Traffic Alert Service p. 11

5.2.4.1 Recommended Requirements p. 11

5.2.4.2 Assumptions p. 11

5.2.5 Use Case#5: MBMS File Repair via Conventional HTTP Servers p. 12

5.2.5.1 Recommended Requirements p. 12

5.2.5.2 Assumptions p. 12

5.2.5.3 Gap Analysis p. 13

5.2.6 Use Case#6: HTTP Delivery of Partial Resources: Application Access to Incomplete Segments in DASH over MBMS/FLUTE p. 13

5.2.6.1 Recommended Requirements p. 15

5.2.6.2 Assumptions p. 15

5.2.6.3 Gap Analysis p. 15

5.2.7 Use Case#7: HTTP Delivery of Partial Resources: Generic File Downloading p. 15

5.2.7.1 Recommended Requirements p. 15

5.2.7.2 Assumptions p. 15

5.2.7.3 Gap Analysis p. 15

5.3 Impacted Technical Specification(s) p. 15

6 IMS-based PSS and MBMS Streaming Synchronization Enhancements (IPME) p. 16

6.1 Introduction p. 16

6.2 Use Cases, Recommended Requirements and Assumptions p. 16

6.2.1 Use Case#1: Media presentation synchronization across multiple UEs in IMS-based PSS services p. 16

6.2.1.1 Recommended Requirements p. 16

6.2.1.2 Assumptions p. 16

6.2.1.3 Gap Analysis p. 16

6.2.2 Use Case#2: Lip-sync across multiple UEs in IMS-based PSS services p. 16

6.2.2.1 Recommended Requirements p. 17

6.2.2.2 Assumptions p. 17

6.2.2.3 Gap Analysis p. 17

6.2.3 Use Case#3: Media presentation synchronization across multiple UEs in IMS-based MBMS services p. 17

6.2.3.1 Recommended Requirements p. 17

6.2.3.2 Assumptions p. 17

6.2.3.3 Gap Analysis p. 17

6.2.4 Use Case#4: Lip-sync across multiple UEs in IMS-based MBMS services p. 18

6.2.4.1 Recommended Requirements p. 18

6.2.4.2 Assumptions p. 18

6.2.4.3 Gap Analysis p. 18

6.3 Impacted Technical Specification(s) p. 18

7 Conclusion p. 18

$ Change history p. 19