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TR 43.902 (RAN6)
Enhanced Generic Access Networks (EGAN) study

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(P) V14.0.0    2017/03    136 p.
(P) V13.0.0    2015/12    136 p.
(P) V12.1.0    2015/06    136 p.
(P) V11.0.0    2012/09    136 p.
(P) V10.0.0    2011/04    136 p.
(P) V9.0.0    2009/12    136 p.
(P) V8.0.0    2008/12    136 p.
(P) V7.0.1    2007/09    136 p.

Rapporteur:  Mr. Kreuzer, Werner
See also:  GAN-related TS/TR    

This TR contains the results of the feasibility study into the enhancements to Generic Access Networks or GAN. Considerations include overall requirements for enhancements, architectural requirements, evaluation of potential architectural solutions and alternative architectures.

The objective is to identify an architectural solution that best meets the requirements as specified in first section. The feasibility study shall also investigate mechanisms for selecting the most appropriate network domain to serve the user.

Existing solutions developed by the 3GPP should be reused as much as possible.


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1   Scope   PDF-p. 7
2   References
3   Definitions, symbols and abbreviations   PDF-p. 8
4   Requirements   PDF-p. 10
5   Architecture alternatives      Up
5.1   A/Gn based architectures
5.1.1   Enhanced Up
5.1.2   Combined GANC/SGSN   PDF-p. 57
5.2   GAN Iu Mode   PDF-p. 62
5.2.1   Functional Architecture
5.2.2   Functional entities   PDF-p. 64
5.2.3   Control and User Plane Architecture
5.2.4   Security Mechanisms   PDF-p. 71      Up
5.2.5   High Level Procedures   Mode Selection in Multi-mode terminals   PLMN Selection   PDF-p. 72   Re-selection between GERAN/UTRAN and GAN modes   PDF-p. 73   GAN Discovery and Registration related procedures   PDF-p. 74   Void   Void   GA-RRC Connection handling   PDF-p. 83   Security Mode Control   PDF-p. 84   NAS Signalling Procedures   Mobile Originated CS Call   PDF-p. 85   Mobile Terminated CS Call   PDF-p. 87   CS Call Clearing   PDF-p. 88      Up   CS Handover   Void   Void   Void   GA-RRC Packet Transport Channel Management Procedures   PDF-p. 95   PDP Context Activation   PDF-p. 103   Network Requested PDP Context Activation   PDF-p. 104   PS Handover between GERAN and GAN   PDF-p. 105   SRNS Relocation between UTRAN and GAN      Up
5.2.6   Terminal Architecture Impacts   PDF-p. 109
6   Evaluation Section   PDF-p. 118
7   Conclusion   PDF-p. 132
A   Change history   PDF-p. 134

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