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TR 23.779 (SA6)
Study on application architecture to support
Mission Critical Push To Talk over LTE (MCPTT) services

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(W-zip) V13.0.0    2015/09    249 p.


Rapporteur:  Mr. Lair, Yannick
See also:  MCPTT-related TS/TR    


This Technical Report contains the results of the Stage 2 study and evaluation of possible 3GPP technical system solutions for the Mission Critical Push To Talk over LTE (MCPTT) application. This TR will identify the architecture needed to support MCPTT services based on the Stage 1 requirements, including TS 22.179. This Technical Report depends on functionality specified in 3GPP specifications.


 

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1   Scope   Word-p. 13
2   References
3   Definitions and abbreviations   Word-p. 14
4   Assumptions and architectural requirements
5   Candidate solutions
5.1   Off-network operations
5.1.1   Solution 1-1: Distributed mesh support for MCPTT off-network MCPTT group calls
5.1.2   Solution 1-2: Off-network MCPTT service using ProSe UE-to-UE relay
5.1.3   Solution 1-3: Application level device to device relay operation for off-network MCPTT
5.1.4   Solution 1-4: Group priority solution for off-network communication when UE in coverage of PLMN network
5.1.5   Solution 1-5: MCPTT off-network

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