Tech-invite 3GPPspace IETFspace

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Content for TR 23.844 Word version: 12.0.0

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6 Alternative Solutions p. 9

6.1 Alternate 1 - Signalling between User Peer and other Peers not traversing IMS core p. 9

6.1.0 General p. 9

6.1.1 Architecture Reference Model p. 9

6.1.2 Functional Entities p. 9

6.1.2.1 Content Source Server (CSS) p. 10

6.1.2.2 Content Cache Server (CCS) p. 10

6.1.2.3 Tracker AS p. 10

6.1.3 Interfaces p. 10

6.1.3.1 Gm, Mw, ISC p. 10

6.1.3.2 PP_s1 p. 10

6.1.3.3 PP_m1 p. 10

6.1.3.4 PP_s2 p. 10

6.1.3.5 PP_m2 p. 11

6.1.3.6 Tc p. 11

6.1.3.7 Ts p. 11

6.1.3.8 SC_s p. 11

6.1.3.9 SC_m p. 11

6.1.3.10 Rx p. 11

6.1.4 Message flows p. 11

6.1.4.1 IMS P2P CDS UE registration procedure p. 11

6.1.4.2 Content Distribution Procedure p. 12

6.1.4.2.1 Content Delivery Establishment Procedure p. 12

6.1.4.2.2 Media Transmission Procedure p. 13

6.1.4.2.3 Content Delivery Termination Procedure p. 13

6.1.4.2.4 CCS Joining Procedure p. 14

6.1.4.3 QoS Control Procedure p. 14

6.1.4.3.1 Alternative 1 p. 14

6.1.4.3.2 Alternative 2 p. 16

6.1.4.3.3 Alternative 3 p. 17

6.2 Alternate 2 - Signalling between User Peer and other User Peers traversing IMS core p. 21

6.2.0 General p. 21

6.2.1 Architecture Reference Model p. 21

6.2.2 Functional Entities p. 21

6.2.3 Interfaces p. 22

6.2.3.1 Gm, Mw, ISC p. 22

6.2.3.2 PP_s1 p. 22

6.2.3.3 PP_m1 p. 22

6.2.3.4 PP_m2 p. 22

6.2.3.5 Tc p. 22

6.2.3.6 Ts p. 22

6.2.3.7 SC_s p. 22

6.2.3.8 SC_m p. 22

6.2.4 Message flows p. 22

6.2.4.1 IMS P2P CDS UE registration procedure p. 22

6.2.4.2 Content Distribution Procedure p. 23

6.2.4.2.1 Content Delivery Establishment Procedure p. 23

6.2.4.2.2 Media Transmission Procedure p. 23

6.2.4.2.3 Content Delivery Termination Procedure p. 24

6.3 Alternate 3 - Using direct interface for signalling between User Peer and Tracker AS p. 24

6.3.0 General p. 24

6.3.1 Architecture Reference Model p. 25

6.3.2 Functional Entities p. 25

6.3.3 Interfaces p. 25

6.3.4 Message flows p. 25

6.3.4.1 Peer list retrieval p. 25

6.4 Architectures for IMS P2P CDS used in conjunction with CDN p. 26

6.4.0 General p. 26

6.4.1 CDN component registered in IMS p. 26

6.4.2 CDN component not registered in IMS p. 27

6.4.3 Integration with CDN using Network Storage Control Peer p. 28

6.5 Including ALTO server in IMS P2P CDS p. 30

6.5.1 General p. 30

6.5.2 Architecture p. 31

6.5.3 ALTO procedures p. 31

6.5.3a ALTO Redirection Procedure p. 32

6.5.4 Information flows p. 33

6.5.4.1 Alternative 1: UE performs ALTO query p. 33

6.5.4.2 Alternative 2: Tracker AS performs ALTO query p. 34

6.5.4.3 Assessment of alternatives p. 35

7 Evaluation p. 36

7.1 Criteria for the evaluation of QoS alternative solutions p. 36

8 Conclusion p. 37

A IETF work on P2P Streaming Protocol (PPSP) p. 38

A.1 IETF PPSP WG overview p. 38

A.2 Mobility Issues in PPSP p. 39

A.2.1 Introduction p. 39

A.2.2 Asymmetric bandwidth p. 39

A.2.3 Battery powered device p. 39

A.2.4 Multiple interfaces p. 39

A.2.5 Location p. 40

$ Change history p. 41