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ETSI TS 143 318
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ETSI TS 143 318 Digital cellular telecommunications system (Phase 2+) (GSM); Generic Access Network (GAN); Stage 2 (3GPP TS 43.318 version 14.1.0 Release 14)
standard by European Telecommunications Standards Institute, 04/01/2017
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Full Description
The present document defines the stage 2 service description for a Generic Access Network (GAN) . It describes the GAN system concepts, documents the reference architecture, functional entities, network interfaces, and high-level procedures.GAN supports two modes of operation:GAN A/Gb modeGAN Iu modeGAN A/Gb mode supports an extension of GSM/GPRS mobile services that is achieved by tunnelling Non Access Stratum (NAS) protocols between the MS and the Core Network over an IP network and the A and Gb interfaces to the MSC and SGSN, respectively.
GAN Iu mode supports an extension of UMTS mobile services that is achieved by tunnelling Non Access Stratum (NAS) protocols between the user equipment (MS) and the Core Network over an IP network and the Iu-cs and Iu-ps interfaces to the MSC and SGSN, respectively.
Both GAN modes are complements to traditional GERAN/UTRAN/E-UTRAN radio access network coverage.