- Non-access stratum
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Non-access stratum (NAS) is a functional layer in the UMTS wireless telecom protocol stack between a core network and user equipment.[1] The layer supports signalling and traffic between those two elements.
+- – - – - -+ +- – - – - – -+ | HTTP | | Application | +- – - – - -+ +- – - – - – -+ | TCP | | Transport | +- – - – - -+ +- – - – - – -+ | IP | | Internet | +- – - – - -+ +- – - – - – -+ | NAS | | Network | +- – - – - -+ +- – - – - – -+ | AS | | Link | +- – - – - -+ +- – - – - – -+ | Channels | | Physical | +- – - – - -+ +- – - – - – -+
Functionality
Following form the part of non-access stratum
See also
- Mobility management
- GSM
- Network protocol design principles
- Internet protocol suite
- X.25 protocol suite
- OSI protocol suite
- Solution stack
References
- ^ Martin Sauter (2006). Communication systems for the mobile information society. John Wiley & Sons. p. 131. ISBN 9780470026762. http://books.google.com/books?id=E_ZGuO2yVnkC&pg=PA131.
Cellular network standards 0G (radio telephones) 1G AMPS familyOther2G 3GPP2 familycdmaOne (TIA/EIA/IS-95 and ANSI-J-STD 008)AMPS familyD-AMPS (IS-54 and IS-136)Other2G transitional
(2.5G, 2.75G)3GPP2 familyCDMA2000 1X (TIA/EIA/IS-2000) · 1X AdvancedOther3G (IMT-2000) 3GPP family3GPP2 familyCDMA2000 1xEV-DO Release 0 (TIA/IS-856)3G transitional
(3.5G, 3.75G, 3.9G)3GPP family3GPP2 familyIEEE family4G
(IMT-Advanced)3GPP familyIEEE familyWiMAX-Advanced (IEEE 802.16m)5G Research concept, not under formal developmentLinks Related articlesExternal linksCategories:- Mobile technology
- Network protocols
- Technology stubs
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