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3GPP TS 43.318 V8.3.0 (2008-08)Technical Specification

3rd Generation Partnership Project;Technical Specification Group GSM/EDGERadio Access Networ;

Generic Access Networ !GAN";Sta#e $

!Release %"

GLOBAL SYSTEM FOR

MOBILE COMMUNICATIONS

R

The present document has been developed within the 3rdGeneration Partnership Project (3GPPTM) and may be further elaborated for the purposes of 3GPP.

The present document has not been subject to any approval process by the 3GPP Orani!ational Partners and shall not be implemented.

This "pecification is provided for future development wor# within 3GPPonly. The Orani!ational Partners accept no liability for any use of this

"pecification."pecifications and reports for implementation of the 3GPPTMsystem should be obtained via the 3GPP Orani!ational Partners$ Publications Offices.

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%eywordsGSM, access, stage 2, architecture

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*&te&ts

oreword..........................................................................................................................................................

4 "cope......................................................................................................................................................

* /eferences..............................................................................................................................................

3 5efinitions- symbols and abbreviations................................................................................................3.4 5efinitions.........................................................................................................................................................3.* "ymbols.............................................................................................................................................................3.3 bbreviations.....................................................................................................................................................

6 rchitecture..........................................................................................................................................6.4 G' 7Gb mode architecture...........................................................................................................................6.* G' &u mode architecture................................................................................................................................

8 unctional entities................................................................................................................................

8.4 Mobile "tation (M")..........................................................................................................................................8.* Generic ccess 'etwor# 1ontroller (G'1)...................................................................................................

8.*.4 G' 7Gb mode.........................................................................................................................................8.*.* G' &u mode...............................................................................................................................................

9 1ontrol and :ser Plane rchitecture....................................................................................................9.4 1" 5omain (G' 7Gb mode).........................................................................................................................9.4.4 1" 5omain ; 1ontrol Plane.........................................................................................................................9.4.4.4 1" 5omain ; 1ontrol Plane ; G' rchitecture...................................................................................9.4.4.* 1" 5omain ; 1ontrol Plane ; M" rchitecture......................................................................................9.4.* 1" 5omain ; :ser Plane..............................................................................................................................9.4.*.4 1" 5omain ; :ser Plane ; G' rchitecture........................................................................................

9.* P" 5omain (G' 7Gb mode).........................................................................................................................9.*.4 P" 5omain ; G' rchitecture..................................................................................................................

9.*.4.4 P" 5omain ; 1ontrol Plane ; G' rchitecture...................................................................................9.*.4.* P" 5omain ; :ser Plane ; G' rchitecture........................................................................................9.*.* P" 5omain ; M" rchitecture.....................................................................................................................9.3 1" 5omain (G' &u mode)..............................................................................................................................

9.3.4 1" 5omain ; 1ontrol Plane.........................................................................................................................9.3.4.4 1" 5omain ; 1ontrol Plane ; G' rchitecture...................................................................................9.3.4.* 1" 5omain ; 1ontrol Plane ; M" rchitecture......................................................................................9.3.* 1" 5omain ; :ser Plane..............................................................................................................................9.3.*.4 1" 5omain ; :ser Plane ; G' rchitecture........................................................................................9.3.*.* 1" 5omain ; :ser Plane ; M" rchitecture..........................................................................................

9.6 P" 5omain (G' &u mode)..............................................................................................................................9.6.4 P" 5omain ; 1ontrol Plane..........................................................................................................................9.6.4.4 P" 5omain ; 1ontrol Plane ; G' rchitecture...................................................................................9.6.4.* P" 5omain ; 1ontrol Plane ; M" rchitecture......................................................................................9.6.* P" 5omain ; :ser Plane..............................................................................................................................9.6.*.4 P" 5omain ; :ser Plane ; G' rchitecture........................................................................................

9.6.*.* P" 5omain ; :ser Plane ; M" rchitecture...........................................................................................

< Manaement functionality....................................................................................................................

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evel Procedures for G' 7Gb Mode......................................................................................,.4 Mechanism of Mode "election in Multi;mode terminals..................................................................................,.* P>M' "election................................................................................................................................................,.3 /e;selection between G2/'7:T/' and G' modes...............................................................................

,.3.4 /ove;in (from G2/'7:T/' mode to G' mode)..............................................................................,.3.* /ove;out (from G' mode to G2/'7:T/' mode)............................................................................,.6 G' 5iscovery and /eistration related procedures.......................................................................................,.6.4 5iscovery and /eistration for Generic ccess..........................................................................................,.6.4.4 General...................................................................................................................................................,.6.4.* "ecurity Gateway &dentification.............................................................................................................

,.6.4.3 G'1 capabilities.................................................................................................................................,.6.4.6 M" capabilities.......................................................................................................................................,.6.4.6a /e?uired G' "ervices.........................................................................................................................,.6.4.6b G' Mode "election.............................................................................................................................,.6.4.8 5iscovery Procedure..............................................................................................................................,.6.4.8.4 'ormal 1ase.....................................................................................................................................

,.6.4.9 /eistration procedure...........................................................................................................................,.6.4.9.4 'ormal case......................................................................................................................................,.6.4.9.* bnormal cases.................................................................................................................................,.6.* 5e;/eistration............................................................................................................................................,.6.3 /eistration :pdate......................................................................................................................................,.6.6 %eep live...................................................................................................................................................

,.6.8 1ell 0roadcast &nformation..........................................................................................................................,.8 uthentication...................................................................................................................................................,.9 2ncryption.........................................................................................................................................................,.9.4 2stablishment of a "ecure ssociation........................................................................................................,.< G;1"/ 1onnection handlin..........................................................................................................................,.

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,.4,.6 GP/" /esume Procedure............................................................................................................................,.4,.8 M" &nitiated 5ownlin# low 1ontrol..........................................................................................................,.4,.9 :plin# low 1ontrol....................................................................................................................................,.4@ "hort Messae "ervice.......................................................................................................................................

,[email protected] G"M based "M"..........................................................................................................................................,.4@.* GP/" based "M"........................................................................................................................................

,.*+ "upplementary "ervices....................................................................................................................................,.*4 2merency "ervices...........................................................................................................................................,.*4.4 General.........................................................................................................................................................,.*4.* 'orth merican 2merency 1alls...............................................................................................................

,.*4.*.4 Phase 4 "olution.....................................................................................................................................,.*4.*.4.4 Phase 4 /e?uirements.......................................................................................................................,.*4.*.4.* Phase 4 Mechanism..........................................................................................................................,.*4.*.* Phase * "olution.....................................................................................................................................,.*4.*.*.4 Phase * /e?uirements.......................................................................................................................,.*4.*.*.* Phase * Mechanism..........................................................................................................................

,.** >ocation "ervices..............................................................................................................................................,.*3 P" =andovers between G' 7Gb mode and G2/'7:T/' mode...........................................................

@ =ih;>evel Procedures for G' &u Mode............................................................................................@.4 Mechanism of Mode "election in Multi;mode terminals..................................................................................@.* P>M' "election................................................................................................................................................@.3 /e;selection between G2/'7:T/' and G' modes...............................................................................@.6 G' 5iscovery and /eistration related procedures.......................................................................................@.8 uthentication...................................................................................................................................................

@.9 2ncryption.........................................................................................................................................................@.< G;//1 1onnection handlin..........................................................................................................................@.

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@.4< (void)...............................................................................................................................................................@.4, (void)...............................................................................................................................................................@.4@ "hort Messae "ervice.....................................................................................................................................@[email protected] "M" via the 1" domain.............................................................................................................................

@.4@.* "M" via the P" domain.............................................................................................................................@.*+ "upplementary "ervices..................................................................................................................................

@.*4 2merency "ervices.........................................................................................................................................@.** >ocation "ervices............................................................................................................................................@.*3 P" =andover between G' &u mode and G2/'7:T/' mode...............................................................@.*3.4 P" =andover from G2/' to G'.........................................................................................................

@.*3.4.4 Preparation Phase.................................................................................................................................@.*3.4.* 2ecution Phase...................................................................................................................................@.*3.* P" =andover from :T/' to G'.........................................................................................................@.*3.*.4 Preparation Phase.................................................................................................................................@.*3.*.* 2ecution Phase....................................................................................................................................@.*3.3 P" =andover from G' to G2/'.........................................................................................................

@.*3.3.4 Preparation Phase.................................................................................................................................@.*3.3.* 2ecution Phase....................................................................................................................................@.*3.6 P" handover from G' to :T/'..........................................................................................................

@.*3.6.4 Preparation Phase.................................................................................................................................@.*3.6.* 2ecution Phase....................................................................................................................................

Annex A (normative): Secrit! mec"ani#m#$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

.4 2P based uthentication...................................................................................................................4.4 2P;"&M Procedure for authentication............................................................................................................4.* 2P;% Procedure for authentication...........................................................................................................4.3 ast /e;authentication......................................................................................................................................4.3.4 2P;"&M ast /e;authentication...............................................................................................................

.4.3.* 2P;% ast /e;authentication.............................................................................................................

.* Profile of &%2v*.................................................................................................................................

.3 Profile of &Psec 2"P...........................................................................................................................

Annex B (in%ormative): Con%i&ration In%ormation$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

0.4 G' 7Gb mode /1'70"&1 for handover;to;G'.....................................................................

0.* G' &u mode :/1'7P"1 for handover;to;G'.........................................................................0.*.4 1ell Measurement Buantities and Calues........................................................................................................

Annex C (in%ormative): I'enti%ier# in GAN$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

1.4 &dentifiers for M"s and eneric &P access networ#.............................................................................

1.* 1ell identifiers for G' 7Gb mode..................................................................................................1.*.4 G' 1ell &d for >ocation "ervices D 0illin.................................................................................................

1.*.4.4 ssinin G' 1ell &d based on G"M location.......................................................................................1.*.* G' 1ell &d for handover;to;G'.................................................................................................................1.*.3 G' /1'70"&1 for handover;to;G'.....................................................................................................1.3 (void)...............................................................................................................................................................

Annex (in%ormative): C"an&e "i#tor!$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

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rer!

This Technical "pecification has been produced by the 3rdGeneration Partnership Project (3GPP).

The contents of the present document are subject to continuin wor# within the T"G and may chane followin formalT"G approval. "hould the T"G modify the contents of the present document- it will be re;released by the T"G with anidentifyin chane of release date and an increase in version number as followsA

Cersion .y.!

whereA

the first diitA

4 presented to T"G for informationE

* presented to T"G for approvalE

3 or reater indicates T"G approved document under chane control.

y the second diit is incremented for all chanes of substance- i.e. technical enhancements- corrections-updates- etc.

! the third diit is incremented when editorial only chanes have been incorporated in the document.

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1 Sc$e

The present document defines the stae * service description for a Generic ccess 'etwor# (G') . &t describes theG' system concepts- documents the reference architecture- functional entities- networ# interfaces- and hih;level

procedures.

G' supports two modes of operationA

G' 7Gb mode

G' &u mode

G' 7Gb mode supports an etension of G"M7GP/" mobile services that is achieved by tunnellin 'on ccess"tratum ('") protocols between the M" and the 1ore 'etwor# over an &P networ# and the and Gb interfaces to theM"1 and "G"'- respectively.

G' &u mode supports an etension of :MT" mobile services that is achieved by tunnellin 'on ccess "tratum('") protocols between the user e?uipment (M") and the 1ore 'etwor# over an &P networ# and the &u;cs and &u;ps

interfaces to the M"1 and "G"'- respectively.

0oth G' modes are complements to traditional G"M7GP/"7:MT" radio access networ# coverae.

2 Reere&ces

The followin documents contain provisions which- throuh reference in this tet- constitute provisions of the presentdocument.

/eferences are either specific (identified by date of publication- edition number- version number- etc.) or

non;specific.

or a specific reference- subse?uent revisions do not apply.

or a non;specific reference- the latest version applies. &n the case of a reference to a 3GPP document (includin

a G"M document)- a non;specific reference implicitly refers to the latest version of that document in the sameRelease as the present document.

F4 3GPP T" *3.++*A H'etwor# architectureH.

F* 3GPP T" *3.++@A H=andover proceduresH.

F3 3GPP T" *3.*ocation "ervices (>1")E unctional descriptionE "tae *H.

F6 3GPP T" *3.4**A H'on;ccess;"tratum functions related to Mobile "tation (M") in idle modeH.

F8 3GPP T" *3.*39A H&ntra;domain connection of /adio ccess 'etwor# (/') nodes to multiple1ore 'etwor# (1') nodesH.

F9 3GPP T" *6.++,A HMobile radio interface layer 3 specificationE 1ore networ# protocolsE "tae 3H.

Focal rea 'etwor# (I>') interwor#in- "tae 3H.

F@ 3GPP T" 33.*36A H3G securityE Iireless >ocal rea 'etwor# (I>') interwor#in securityH.

F4+ 3GPP T" 63.+*+A H"ecurity related networ# functionsH.

F44 3GPP T" 6,.++6A H0ase "tation "ystem ; Mobile;services "witchin 1entre (0"";M"1) interfaceE

>ayer 4 specificationH.

F4* 3GPP T" 6,.++9A H"inallin transport mechanism specification for the 0ase "tation "ystem ;Mobile;services "witchin 1entre (0"";M"1) interfaceH.

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F43 3GPP T" 6,.++,A HMobile "witchin 1entre ; 0ase "tation "ystem (M"1;0"") interfaceE >ayer 3specificationH.

F46 3GPP T" 6,.+46A HGeneral Pac#et /adio "ervice (GP/")E 0ase "tation "ystem (0"") ; "ervinGP/" "upport 'ode ("G"') interfaceE Gb interface >ayer 4H.

F48 3GPP T" 6,.+49A HGeneral Pac#et /adio "ervice (GP/")E 0ase "tation "ystem (0"") ; "ervinGP/" "upport 'ode ("G"') interfaceE 'etwor# "erviceH.

F49 3GPP T" 6,.+4,A HGeneral Pac#et /adio "ervice (GP/")E 0ase "tation "ystem (0"") ; "ervinGP/" "upport 'ode ("G"') interfaceE 0"" GP/" protocolH.

F41") in G2/'H.

F4, 3GPP T" 68.++,A H/adio subsystem lin# controlH.

F4@ &2T /1 ist (1/>) ProfileH.

F3+ &2T draft;haverinen;pppet;eap;sim;49 (5ecember *++6)A H2tensible uthentication ProtocolMethod for G"M "ubscriber &dentity Modules (2P;"&M)H.

F34 &2T draft;ietf;p#i6ipsec;i#ecert;profile;+3 (October *++6)A HThe &nternet &P "ecurity P%& Profileof &%2v47&"%MP- &%2v*- and P%&KH.

F3* &2T draft;ietf;ipsec;i#ev*;4< (October *++6)A H&nternet %ey 2chane (&%2v*) ProtocolH.

F33 &2T draft;ietf;ipsec;i#ev*;alorithms;+8 (pril *++6)A H1ryptoraphic lorithms for use in the

&nternet %ey 2chane Cersion *H.

F36 &2T draft;ietf;ipsec;ui;suites;+9 (pril *++6)A H1ryptoraphic "uites for &PsecH.

F38 &2T /1 3@6,A H:5P 2ncapsulation of &Psec 2"P Pac#etsH.

F39 &2T /1 *6,9A HThe 'etwor# ccess &dentifierH.

F3

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F6* &2T /1 *6+@A HThe &nternet %ey 2chane (&%2)H.

F63 3GPP T" *3.++3A H'umberin- addressin and identificationH.

F66 3GPP T" 63.4*@A H Pac#et;switched handover for G2/' 7Gb modeE "tae *L.

F68 3GPP T" *8.64+A H:T/' &u &nterfaceA eneral aspects and principlesH.

F69 3GPP T" *8.644A H:T/' &u interface layer 4H.

F6M'. The "ervin G'1 and 5efault G'1 may

be the same entity- in which case no redirection is re?uired.

'i#cover! 0roce're:process by which the M" discovers the 5efault G'1 in the =P>M'.

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CS "an'over:mobile station enaed in a call (a 1" domain service) moves between 3GPP access networ#s and G'.

"an'over in:mobile station moves from 3GPP access networ#s to G'.

"an'over ot:mobile station moves from G' to 3GPP access networ#s.

S "an'over: mobile station with one or more onoin P" domain services moves between a G' cell and a

G2/'7:T/' cell.

0rovi#ionin& GANC: loical role of a G'1 in the =P>M' of an M". Ihen an M" performs the 5iscoveryProcedure to this G'1- the M" is provided the address of the 5efault G'1 in the =P>M'.

re'irection:process by which a 5efault or "ervin G'1 redirects an M" to an alternative "ervin G'1This alternative G'1 is li#ely to become the "ervin G'1 for the M".

re&i#tration 0roce're:process by which an M" re?uests the Generic ccess "ervice from a G'1.

rove in:mobile station reselects from 3GPP access networ#s to G'.

rove ot:mobile station reselects from G' to 3GPP access networ#s.

rovin&:action of re;selection between 3GPP access technoloy and G' for a mobile station in idle mode.

#eam/e##:free from noticeable transitions (i.e. no end;user action is re?uiredE speech interruptions are shortE service

interruptions are shortE incomin calls are not missedE pac#et sessions are maintainedE services wor# identically).

#ervin& GANC: loical role of the G'1 in a P>M' which provides an M" with the Generic ccess service.

#ita,/e ce//:this is a cell on which an M" may camp. &t must satisfy criteria which are defined for 7Gb mode in 3GPPT" 63.+** and for &u mode in 3GPP T" *8.3+6.

#er e1i0ment:enerally referred to as mobile stationL in this document.

3.2 S'#s

or the purposes of the present document- the followin symbols applyA

:p &nterface between M" and G'1

3.3 %''re7iati&s

or the purposes of the present document- the followin abbreviations applyA

uthentication- uthori!ation and ccountin% uthentication and %ey reement

P ccess Point

" ccess "tratum0"1 0ase "tation 1ontroller 0"" 0ase "tation "ubsystem0""GP 0ase "tation "ystem GP/" Protocol0""MP 0ase "tation "ystem Manaement pplication Part

11 1all 1ontrol1G& 1ell Global &dentification1M 1onnection Manaement1' 1ore 'etwor# 1" 1ircuit "witched1TM 1ellular Tet Telephone Modem

5'" 5omain 'ame "ystem5TM 5ual Transfer Mode

2P 2tensible uthentication Protocol2T"& 2uropean Telecommunications "tandards &nstitute11 :" ederal 1ommunications 1ommissionB5' ully Bualified 5omain 'ame

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G;1"/ Generic ccess ; 1ircuit "witched /esourcesG5 Georaphical rea 5escriptionG' Generic ccess 'etwor# G'1 Generic ccess 'etwor# 1ontroller

G;P"/ Generic ccess ; Pac#et "witched /esourcesG;/1 Generic ccess ; /esource 1ontrol

G;//1 Generic ccess ; /adio /esource 1ontrolG2/' G"M 25G2 /adio ccess 'etwor# GG"' Gateway GP/" "upport 'odeGMM7"M GP/" Mobility Manaement and "ession Manaement

GP/" General Pac#et /adio "erviceG"M Global "ystem for Mobile communicationsG"' GP/" "upport 'ode=>/ =ome >ocation /eister =P>M' =ome P>M'&2T &nternet 2nineerin Tas# orce

&%2 &nternet %ey 2chane&M2&"C &nternational Mobile station 2?uipment &dentity and "oftware Cersion number&M"& &nternational Mobile "ubscriber &dentity

&P &nternet Protocol> >ocation rea

>& >ocation rea &dentity>>1 >oical >in# 1ontrolM1 Medium ccess 1ontrolM1 Messae uthentication 1odeMM Mobility ManaementM" Mobile "tation

M"1 Mobile "witchin 1enter MTP4 Messae Transfer Part layer 4MTP* Messae Transfer Part layer *MTP3 Messae Transfer Part layer 3'" 'on;ccess "tratum

P5P Pac#et 5ata ProtocolP5: Protocol 5ata :nitP>M' Public >and Mobile 'etwor# P" Pac#et "witchedP"P Public "afety nswerin Point

'OT2A P"P is an emerency services networ# element that is responsible for answerin emerency calls.

P"T' Public "witched Telephone 'etwor# P;TM"& Pac#et ; TM"&Bo" Buality of "ervice/ /outin rea/1 /outin rea 1ode

/& /outin rea &dentity/T /adio ccess Technoloy/>1 /adio >in# 1ontrol/'1 /adio 'etwor# 1ontroller /T1P /eal Time 1ontrol Protocol/TP /eal Time Protocol

"11P "inallin 1onnection 1ontrol Part"2GI "2curity GateIay"G"' "ervin GP/" "upport 'ode"&M "ubscriber &dentity Module"M>1 "ervin Mobile >ocation 1enter "M" "hort Messae "ervice

"'51P "ub;'etwor# 5ependent 1onverence Protocol

T0 Temporary 0loc# lowT1 Transport 1hannelT1P Transmission 1ontrol ProtocolTO Tandem ree Operation

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TM"& Temporary Mobile "ubscriber &dentityTrO Transcoder ree OperationTTN Tet Telephone or TeletNpewriter :5P :ser 5ataram Protocol

:2 :ser 2?uipment:MT" :niversal Mobile Telecommunication "ystem

C>/ Cisited >ocation /eister CP>M' Cisited Public >and Mobile 'etwor#

4 %rchitecture

4.1 G% %G' !e architecture

The Generic ccess 'etwor# 7Gb mode functional architecture is illustrated in fiure 4.

0i#ure (1 GAN A/G2 ode functional architecture

The main features of the G' 7Gb mode architecture areA

'ew entities- and entities with enhanced functionalityA

; Mobile "tation (M").

; Generic ccess 'etwor# 1ontroller (G'1). The G'1 appears to the core networ# as a G2/' 0ase

"tation "ubsystem (0""). &t includes a "ecurity Gateway ("2GI) that terminates secure remote accesstunnels from the M"- providin mutual authentication- encryption and data interity for sinallin- voice anddata traffic.

Generic &P ccess networ# provides connectivity between the M" and the G'1. The &P transport connection

etends from the G'1 to the M". sinle interface- the :p interface- is defined between the G'1 and theM".

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1o;eistence with the G"M7GP/" /adio ccess 'etwor# (G2/') and interconnection with the 1ore 'etwor#

(1') via the standardi!ed interfaces defined for G2/' 7Gb modeA

; ;interface for circuit switched services as defined in 3GPP T" 6,.++, F43.

; Gb;interface for pac#et switched services as defined in 3GPP T" 6,.+4, F49.

; >b;interface for supportin location services as defined in 3GPP T" 63.+8@ F4/ and the

"G"'7GG"').

:se of server over the Im interface as defined by 3GPP T" *@.*36 F,. The server is used to

authenticate the M" when it sets up a secure tunnel. 'ote that only a subset of the Im functionalities is re?uired

for the G' application. s a minimum the G'1;"2GI shall support the Im authentication procedures.

&ndication of support for P" "ervices and of support for 5TM is provided throuh appropriate sinallin to the M".

4.2 G% u !e architecture

The Generic ccess 'etwor# &u mode functional architecture is illustrated in fiure 4a.

0i#ure (a1 GAN 4u ode functional architecture

The main features of the G' &u mode architecture areA

2ntities with enhanced functionalityA

; Mobile "tation (M"). The functionality of the M" defined for G' 7Gb mode is modified to support G'&u mode operation. The M" may support G' &u mode operation- G' 7Gb mode operation- or both.

Mode selection is performed durin reistration.

; Generic ccess 'etwor# 1ontroller (G'1). The functionality of the G'1 defined for G' 7Gb modeis modified so as to appear to the core networ# as a :T/' /adio 'etwor# 1ontroller (/'1). s for G'

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7Gb mode- the G'1 includes a "ecurity Gateway ("2GI) that terminates secure remote access tunnelsfrom the M"- providin mutual authentication- encryption and data interity for sinallin- voice and datatraffic.

eneric &P access networ# provides connectivity between the M" and the G'1. The &P transport connection

etends from the G'1 to the M". sinle interface- the :p interface- is defined between the G'1 and the

M". unctionality is added to this interface- over that defined for G' 7Gb mode- to support the G' &u modeservice.

1o;eistence with the :MT" Terrestrial /adio ccess 'etwor# (:T/') and interconnection with the 1ore

'etwor# (1') via the standardi!ed interfaces defined for :T/'A

; &u;cs interface for circuit switched services as overviewed in 3GPP T" *8.64+ F68.

; &u;ps interface for pac#et switched services as overviewed in 3GPP T" *8.64+ F68.

; &u;pc interface for supportin location services as described in 3GPP T" *8.68+ F8*.

; &u;bc interface for supportin cell broadcast services as described in 3GPP T" *8.64@ F84.

Transaction control (e.. 11- "M) and user services are provided by the core networ# (e.. M"17C>/ and the"G"'7GG"').

:se of server over the Im interface as defined by 3GPP T" *@.*36 F,. The server is used to

authenticate the M" when it sets up a secure tunnel. 'ote that only a subset of the Im functionalities is re?uired

for G' &u mode. s a minimum the G'1;"2GI shall support the Im authentication procedures.

G'1 implementation may simultaneously support both G' 7Gb mode and G' &u mode operationE theinterfaces associated with both modes of operation are shown in the followin fiure.

0i#ure (21 Siultaneous GAN A/G2 ode and GAN 4u ode functional architecture

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5 u&cti&a# e&tities

5.1 M'i#e Stati& (MS)

The M" contains a new functional bloc# to access a Generic ccess 'etwor# (G').

5.2 Ge&eric %ccess etr9 *&tr##er (G%*)

5.2.1 G% %G' !e

The core networ# interacts with the Generic ccess 'etwor# 1ontroller (G'1) as thouh it was an 7Gb mode 0"".The eneric &P access networ# provides connectivity between the G'1 and the M". The G'1 entity inter;wor#sbetween the 7Gb interfaces and a eneric &P access networ#- usin the followin functionalityA

:ser plane circuit switched servicesA

; /eframin of M/7/TP to M/7(;interface framin).

; &f non;TrO- transcodin voice to7from the M" to P1M voice from7to the M"1.

; &f TrO- transcodin maybe re?uired if a common codec cannot be neotiated.

:ser plane pac#et switched servicesA

; &nter;wor#in data transport channels over :p interface to pac#et flows over Gb interface.

1ontrol plane functionalityA

; "ecurity Gateway ("2GI) for the set;up of a secure tunnel to M" for mutual authentication- encryption anddata interity. The "2GI provides a subset of the Im functions- specifically the authentication procedures.

; /eistration for G' access and providin system information.

; Manaement of G' bearer paths for 1" and P" services- includin the establishment- administration- andrelease of control and user plane bearers between the M" and the G'1.

; unctionality providin support for pain- handover and P" handover procedures.

; Transparent transfer of >3 messaes (i.e. '" protocols) between the M" and core networ#.

5.2.2 G% u !e

The core networ# interacts with the Generic ccess 'etwor# 1ontroller (G'1) as thouh it was an /'1. The eneric

&P access networ# provides connectivity between the G'1 and the M". The G'1 entity inter;wor#s between the &uinterfaces and a eneric &P access networ#- usin the followin functionalityA

:ser plane circuit switched servicesA

; The interwor#in of circuit switched user data between the :p interface and the &u;cs interface

:ser plane pac#et switched servicesA

; The interwor#in of pac#et switched user data between the :p interface and the &u;ps interface

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1ontrol plane functionalityA

; "ecurity Gateway ("2GI) for the set;up of a secure tunnel to the M" for mutual authentication- encryption

and data interity

; G' 5iscovery support and 5efault G'1 assinment

; G' /eistration support includin provision of G' system information to the M" and possibleredirection to a different "ervin G'1

; Manaement of G' bearer paths for 1" and P" services- includin the establishment- administration- andrelease of control and user plane bearers between the M" and the G'1

; unctionality providin support for pain and relocation7handover procedures

; Transparent transfer of >3 messaes (i.e.- '" protocols) between the M" and core networ#

6 *&tr# a&! :ser P#a&e %rchitecture

6.1 *S ai& (G% %G' !e)

6.1.1 *S ai& - *&tr# P#a&e

6.1.1.1 *S ai& - *&tr# P#a&e - G% %rchitecture

The G' architecture in support of 1" 5omain control plane is illustrated in fiure *.

0i#ure $1 5p 6S Doain 6ontrol Plane Architecture

The main features of the :pinterface for the 1" domain control plane are as followsA

The underlyin ccess >ayers and Transport &P layer provides the eneric connectivity between the M" and the

G'1.

The &Psec layer provides encryption and data interity.

T1P provides reliable transport for the G;/1 between M" and G'1 and is transported usin the /emote &P

layer.

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The G;/1 manaes the &P connection- includin the G' reistration procedures.

The G;1"/ protocol performs functionality e?uivalent to the G"M;// protocol- usin the underlyin

connection manaed by the G;/1.

Protocols- such as MM and above- are carried transparently between the M" and M"1.

The G'1 terminates the G;1"/ protocol and inter;wor#s it to the ;interface usin 0""P messain.

The /emote &P layer is the inner &P layer for &Psec tunnel mode and is used by the M" to be addressed by the

G'1. /emote &P layer is confiured durin the &Psec connection establishment.

6.1.1.2 *S ai& - *&tr# P#a&e - MS %rchitecture

The M" architecture for the 1" domain control plane in the M" is illustrated in fiure 3.

0i#ure 31 MS 6S Doain 6ontrol plane Architecture

iure 3 illustrates the main features of the M" 1" 5omain 1ontrol Plane architecture- which are as followsA

The //;"P interface to the G"M;MM layer is preserved identically for both G"M and G' access.

n access mode switch is provided to switch between G2/'7:T/' and G' 7Gb modes.

G;1"/ peers with G"M;// to provide coordination for rovin and handover.

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6.1.2 *S ai& - :ser P#a&e

6.1.2.1 *S ai& - :ser P#a&e - G% %rchitecture

The G' protocol architecture in support of 1" domain user plane is illustrated fiure 6.

0i#ure &1 5p 6S Doain 5ser Plane Protocol Architecture

The main features of the 1" domain user plane of the :p interface are as followsA


G'1.


1" domain user plane is transported over /TP7:5P between M" and G'1.

"upport for M/ / codec- as specified in 3GPP T" *9.+

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6.2 PS ai& (G% %G' !e)

6.2.1 PS ai& - G% %rchitecture

6.2.1.1 PS ai& - *&tr# P#a&e - G% %rchitectureThe G' architecture in support of P" 5omain 1ontrol Plane is illustrated in fiure 8.

0i#ure ,1 5p PS Doain 6ontrol Plane Architecture

The main features of the :pinterface for the P" domain control plane are as followsA


G'1.


T1P provides reliable transport for the G;P"/ between M" and G'1.

The G;/1 manaes the &P connection- includin the G' reistration procedures.

The G;P"/ protocol performs functionality e?uivalent to the GP/";/>1 protocol. The concept of a T0 is

replaced by mechanisms to manae an &P connection between M" and G'1.

'OT2A 'o Bo" can be assured when utili!in the G;P"/ transport channel.

Protocols- such as >>1 and above- are carried transparently between the M" and 1'.

The G'1 terminates the G;P"/ protocol and inter;wor#s it to the Gb;interface usin 0""GP.

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6.2.1.2 PS ai& - :ser P#a&e - G% %rchitecture

The G' architecture for P" 5omain :ser Plane is illustrated in fiure 9.

0i#ure -1 5p PS Doain 5ser Plane Protocol Architecture

The main features of the :p interface for P" domain user plane are as followsA


G'1.


The G;P"/ operates between the M" to the G'1 transportin the upper layer payload (i.e. user plane

data)across the :p interface.

Protocols and data- such as >>1 and above- are carried transparently between the M" and 1'.

The G'1 terminates the G;P"/ protocol and inter;wor#s it to the Gb;interface usin 0""GP.

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6.2.2 PS ai& - MS %rchitecture

The M" architecture for the P" domain is illustrated in more detail in fiure >1 layer is preserved.

The GMM//;"P interface to the GP/";GMM layer is preserved.

n access mode switch is provided to switch between GP/" and G' 7Gb modes.

G;P"/ peers with GP/";/>1 to provide coordination for rovin and P" handover.

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6.3 *S ai& (G% u !e)

6.3.1 *S ai& - *&tr# P#a&e

6.3.1.1 *S ai& - *&tr# P#a&e - G% %rchitectureThe G' &u mode architecture in support of the 1" 5omain control plane is illustrated in fiure

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6.3.1.2 *S ai& - *&tr# P#a&e - MS %rchitecture

The M" architecture for the 1" domain control plane is illustrated in fiure

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6.3.2 *S ai& - :ser P#a&e

6.3.2.1 *S ai& - :ser P#a&e - G% %rchitecture

The G' &u mode protocol architecture in support of the 1" domain user plane is illustrated fiure

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6.3.2.2 *S ai& - :ser P#a&e - MS %rchitecture

The M" architecture for the 1" domain user plane is illustrated in fiure

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6.4 PS ai& (G% u !e)

6.4.1 PS ai& - *&tr# P#a&e

6.4.1.1 PS ai& - *&tr# P#a&e - G% %rchitectureThe G' &u mode architecture in support of the P" 5omain 1ontrol Plane is illustrated in fiure

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6.4.1.2 PS ai& - *&tr# P#a&e - MS %rchitecture

The M" architecture for the P" domain control plane is illustrated in fiure

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6.4.2 PS ai& - :ser P#a&e

6.4.2.1 PS ai& - :ser P#a&e - G% %rchitecture

The G' &u mode architecture for the P" 5omain :ser Plane is illustrated in fiure

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6.4.2.2 PS ai& - :ser P#a&e - MS %rchitecture

The M" architecture for the P" domain user plane is illustrated in fiure

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Ma&agee&t u&cti&a#it

.1 State !iagra r Ge&eric %ccess

0i#ure %1 State dia#ra for Generic Access in the MS

'otesA

4. The followin cases are possible when switchin the servin // to G' &u modeA

a. Transition to G;//1;&5>2 for both 1" and P" domains (i.e.- idle mode transition)

b. Transition to G;//1;&5>2 (P" domain) and G;//1;1O''21T25 (1" domain) (i.e.- due to 1"handover)

c. Transition to G;//1;&5>2 (1" domain) and G;//1;1O''21T25 (P" domain) (i.e.- due to P"handover)

d. Transition to G;//1;1O''21T25 (1" domain) and G;//1;1O''21T25 (P" domain) (i.e.-

due to combined 1" handover and P" handover)

*. The followin cases are possible when switchin the servin // from G' &u modeA

a. Transition from G;//1;&5>2 for both 1" and P" domains (i.e.- idle mode transition)

b. Transition from G;//1;&5>2 (P" domain) and G;//1;1O''21T25 (1" domain) (i.e.- due to1" handover).

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c. Transition from G;//1;&5>2 (1" domain) and G;//1;1O''21T25 (P" domain) (i.e.- due toP" handover)

d. Transition from G;//1;1O''21T25 (1" domain) and G;//1;1O''21T25 (P" domain)(i.e.- due to combined 1" handover and P" handover)

3. There is no re?uirement for the M" to support both G' &u mode and G' 7Gb mode.

.2 G%-R* (Ge&eric %ccess Resurce *&tr#)

.2.1 Ge&era#

The G;/1 protocol provides a resource manaement layer- with the followin functionsA

discovery and /eistration with G'1- includin G' mode selection (G' 7Gb mode or G' &u mode)E

reistration :pdate with G'1E

application level #eep;alive with G'1E and

support for identification of the P bein used for G' access.

.2.2 States the G%-R* su'-#aer

The G;/1 sub;layer in the M" can be in one of two states ; G;/1;52/2G&"T2/25 or G;/1;/2G&"T2/25 ;as illustrated in fiure ,.

&n the G;/1;52/2G&"T2/25 state- the M" may be in a G' coverae areaE however- the M" has not reistered

successfully with the G'1 and cannot echane G;1"/ and G;P"/ sinallin messaes (G' 7Gb mode) or

G;//1 messaes (G' &u mode) with the G'1. The M" may initiate the G' /eistration procedure when in theG;/1;52/2G&"T2/25 state. The M" returns to G;/1;52/2G&"T2/25 state on loss of T1P or &Psecconnection.

&n the G' 7Gb mode G;/1;/2G&"T2/25 state- the M" is reistered with a G'1- has an &Psec and an T1Pconnection established to the "ervin G'1- throuh which the M" may echane G;1"/ or G;P"/ sinalin

messaes with the G'1- and the "P between the G;1"/ and MM entity and the G;P"/ and the GMM entity arenot active. &n the G;/1;/2G&"T2/25 state- the M" may be camped on G2/' or :T/'- active in G2/' or:T/' (e.. a G"M // or a :T/' //1 connection may be established) or may have no G2/' or :T/'service while still maintainin the reistration in the G'.

&n the G' &u mode G;/1;/2G&"T2/25 state- the M" is reistered with the "ervin G'1. The M" has an &Psectunnel and a T1P connection established to the "ervin G'1 throuh which the M" may echane G;/1 or G;

//1 sinalin messaes with the G'1. The "P between the G;//1 and MM entity and the G;//1 and theGMM entity are not active. &n the G;/1;/2G&"T2/25 state- the M" may be camped on G2/' or :T/'- activein G2/' or :T/' (e.. a G"M // or a :T/' //1 connection may be established) or may have no G2/' or:T/' service while still maintainin the reistration in the G'.

.3 G%-*SR (Ge&eric %ccess *ircuit Sitche! Resurces)

.3.1 Ge&era#

The G;1"/ protocol provides a resource manaement layer- which is e?uivalent to the G"M;// and provides the

followin functionsA

setup of bearer for 1" traffic between the M" and G'1E

handover support between G2/' and G'E and

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functions such as GP/" suspension- pain- cipherin confiuration- classmar# chane.

.3.2 States the G%-*SR su'-#aer

The G;1"/ sub;layer in the M" can be in two states ;G;1"/;&5>2 or G;1"/;525&1T25 as illustrated in

fiure ,.

The M" enters G;1"/;&5>2 state from G;/1;/2G&"T2/25 statewhen the M" switches the servin // entity toG;1"/ and the "P between the MM and the G;1"/ is activated. "imultaneously- the G;P"/ ac?uires the controlof the />1 G// and GMM// "Ps and transitions to G;P"/; "T'50N state. Ihile the M" remains in G'

7Gb mode it performs reistration :pdate and application level #eep;alive with the G'1 as per the G;/1;/2G&"T2/25 state.

The M" moves from the G;1"/;&5>2 state to the G;1"/;525&1T25 state when the G;1"/ connection isestablished and returns to G;1"/;&5>2 state when the G;1"/ connection is released. :pon G;1"/ connectionrelease an indication that no dedicated resources eist is passed to the upper layers.

The M" may also enter G;1"/;525&1T25 state from G;/1;/2G&"T2/25 state of G2/'7:T/' mode

when =andover to G' is bein performed. &n the same way- the M" enters G;/1;/2G&"T2/25 state ofG2/'7:T/' mode from G;1"/;525&1T25 when =andover from G' is bein performed.

.4 G%-PSR (Ge&eric %ccess Pac9et Sitche! Resurces)

The G;P"/ protocol provides the followin servicesA

delivery of GP/" sinallin- "M" messaes over the secure tunnelE

pain- flow control- GP/" transport channel manaementE

P" handover support between G2/'7:T/' mode and G' 7Gb modeE and

transfer of GP/" user plane data.

The G;P"/ Transport 1hannel (G;P"/ T1) provides the association between the M" and G'1 for the transport ofGP/" user data over the :p interface. Given that the G' user data transport is :5P based- the G;P"/ Transport1hannel is associated with correspondin M" and G'1 &P addresses and :5P ports used for GP/" user data transfer.

The M" and G'1 manae the G;P"/ Transport 1hannel based on the re?uests for data transfer and theconfiurable G;P"/ 1hannel Timer.

.4.1 States the G%-PSR su'-#aer

The G;P"/ sub;layer in the M" can be in two states ; G;P"/;"T'50N or G;P"/;1T&C2 ; as illustrated infiure ,.

GA*SR*STANBY:This is the initial7default state of the mobile station in G' 7Gb mode. The M" is not

able to send or receive GP/" user data to and from the G'1. The G;P"/ Transport 1hannel does not eistwhen the M" is in G;P"/;"T'50N state. The G'1 or the M" needs to activate the G;P"/ Transport1hannel before sendin any GP/" user data. Ihen the M" G;P"/ successfully establishes a G;P"/Transport 1hannel- it transitions to the G;P"/;1T&C2 state.

GA*SR*ACTI2E: The M" is able to send and receive GP/" user data to and from the G'1. The

correspondin G;P"/ Transport 1hannel eists.

:pon a successful switch to G' 7Gb mode as a result of rove;in- the M" G;P"/ ac?uires the control of the />1G// and GMM// "Ps- and transitions to G;P"/;"T'50N state and G;P"/ T1 activation may then betriered.

fter successful G;P"/ T1 activation when in G' 7Gb mode- the M" G;P"/ transitions to G;P"/;1T&C2state. The followin are the possible triers for G;P"/ T1 activation when the M" is in the G;P"/;"T'50N

state in G' 7Gb modeA

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The M" >>1 entity initiates the uplin# data transfer usin >>1 "P& 3- 8- @ or 44 and the G;P"/ sub;layer is

in the G;P"/;"T'50N state.

The G'1 initiates G;P"/ T1 activationE i.e. the M" receives a G;P"/;1T&CT2 :T1 /2B messae

from the G'1 (see sub;clause ,.49.6).

s described in 3GPP T" 63.4*@ F66- the M" and G'1 establish a G;P"/ T1 durin the P" handover preparationphase which results in M" enablin the reception of downlin# >>1 P5:s. :pon a successful switch to G' 7Gbmode as a result of receivin the P" =andover 1ommand- the M" transitions to G;P"/;1T&C2 state- the M" G;P"/ ac?uires the control of the />1 G// and GMM// "Ps and enables the transmission of uplin# >>1 P5:s onthe allocated G;P"/ T1.

:pon the successful G;P"/ T1 activation and in parallel with transition to G;P"/;1T&C2 state- the M" G;P"/starts the G;P"/ 1hannel Timer. Ihen the G;P"/ 1hannel Timer epires- the M" sends a messae to the G'1 toinitiate G;P"/ T1 deactivation. :pon successful G;P"/ T1 deactivation- the M" G;P"/ transitions to G;P"/;"T'50N state.

t any time- while in G' 7Gb mode- if the servin // entity is switched to G"M;//- the G;P"/ is disconnectedfrom GP/" "Ps and the M" enters G2/'7:T/' mode. "imultaneously- the M" will release the associated G;P"/ T1 reardless of the G;P"/ 1hannel Timer status.

The M" G;P"/ maintains one G;P"/ T1 for all active user data flowsE i.e. if the G;P"/ is in G;P"/;1T&C2state- any uplin# user data pac#et is transferred usin the active G;P"/ T1 reardless of the associated P1 and >>1

"P. The G;P"/ 1hannel Timer is restarted whenever any uplin# user data pac#et is sent or downlin# user datapac#et received reardless of the associated P1 and >>1 "P.

.4a G%-RR*

.4a.1 Ge&era#

The G;//1 protocol provides a resource manaement layer which is e?uivalent to :T/';//1 and supports the

followin functionsA

setup of transport channels for 1" and P" traffic between the M" and G'1E

1" and P" handover support between G2/'7:T/' and G'E

direct transfer of '" messaes between the M" and the core networ#E and

other functions such as 1" and P" pain and security confiuration.

.4a.2 States the G%-RR* su'-#aer

The G;//1 sub;layer in the M" contains two entities- the 1" domain G;//1 sublayer entity and the P" domainG;//1 sublayer entity (as illustrated in iure ,). These entities operate independently and in parallelE e..- two G;//1 connections are established in the case of simultaneous 1" and P" services- one G;//1 connection for each

domain.

2ach G;//1 sub;layer entity in the M" can be in one of two states- G;//1;&5>2 or G;//1;1O''21T25 asillustrated in fiure ,.

0oth the 1" G;//1 sub;layer entity and the P" G;//1 sublayer entity in the M" enters the G;//1;&5>2 statewhen the M" switches the servin // entity to G;//1 and the "P between the '" and the G;//1 is activated.This switch may occur only when the G;/1 is in the G;/1;/2G&"T2/25 state.

The 1"7P" G;//1 sublayer entity in the M" moves from the G;//1;&5>2 state to the G;//1;1O''21T25

state when the 1"7P" G;//1 connection is established and returns to the G;//1;&5>2 state when the 1"7P" G;//1 connection is released. :pon 1"7P" G;//1 connection release- an indication that no dedicated resources eistfor the domain is passed to the upper layers.

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The 1"7P" G;//1 sublayer entity in the M" may also enter the G;//1;1O''21T25 state while in the G;/1;/2G&"T2/25 state in G2/'7:T/' mode when 1"7P" handover to G' is bein performed.

.5 Securit Mecha&iss

G' supports security mechanisms at different levels and interfaces as depicted in fiure @.

0i#ure 1 GAN Securit7 Mechaniss

4. The security mechanisms over the :p interface protect sinallin- voice and data traffic flows between the M"and the G'1 from unauthori!ed use- data manipulation and eavesdroppinE i.e. authentication- encryption anddata interity mechanisms are supported.

*. uthentication of the subscriber by the core networ# occurs between the M"17C>/ or "G"' and the M" and istransparent to the G'1 ; however- there is a cryptoraphic bindin between the M";1' authentication and theM";G'1 authentication to prevent man in the middle attac#s. GP/" cipherin is the standard >>1 layercipherin that operates between the M" and the "G"' (not applicable to G' &u mode). These mechanisms areout of scope of the present document.

3. dditional application level security mechanisms may be employed in the P" domain to secure the end;to;endcommunication between the M" and the application server. or eample- the M" may run the =TTP protocolover an ""> session for secure web access. These mechanisms are out of scope of the present document.

ll sinallin traffic and user;plane traffic sent between M" and G'1 over the :p interface is protected by an &Psectunnel between the M" and G'1;"2GI- that provides mutual authentication (usin "&M credentials)- encryption and

data interity usin the same mechanisms as specified in 3GPP T" 33.*36 F@.

8 ;igh-"e7e# Prce!ures r G% %G' M!e

8.1 Mecha&is M!e Se#ecti& i& Mu#ti-!e teri&a#s Generic ccess capable terminal may support any &P access technoloy in addition to the G2/' and possibly:T/' radio interfaces. The M" may be either in the G2/'7:T/' mode or in G' mode of operation.

The M" can be confiured to operate in one of the above two modes at any iven time. There may be preferred mode ofoperation that can be confiured by the user- or by the operator throuh various mechanisms- e.. device manaement.

On power up- the M" always starts in G2/'7:T/' mode and eecutes the normal power;up se?uence as specifiedin 3GPP T" *3.4** F6. ollowin this- the M" may switch into G' mode based on mode selection preference

determined by user preferences or operator confiuration.

The various preferences for the M" that are possible are as followsA

G2/'7:T/' ;onlyA

; The M" // entity remains in G2/'7:T/' mode and does not switch to G' mode.

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G2/'7:T/' ;preferredA

; The M" // entity is in G2/'7:T/' mode as lon as there is a suitable G2/' cell or a suitable

:T/' cell available. &f the M" cannot find a suitable G2/' cell or a suitable :T/' cell to camp on-and M" has successfully reistered with a G'1 over the eneric &P access networ#- then the M" switchesto G' mode. Ihen the M" in G' mode is able to find a suitable G2/' cell or a suitable :T/' cell

to camp on- or the M" has de;reistered or loses connectivity with the G'1 over the eneric &P accessnetwor#- the M" returns to G2/'7:T/' mode.

G';preferredA

; Ihen the M" has successfully reistered with the G' over the eneric &P access networ#- the M" switches

to G' mode and stays in this mode as lon as the G' is available. Ihen the M" dereisters- or otherwiseloses connectivity with the G' over the eneric &P access networ#- the M" switches to G2/'7:T/'mode.

G';onlyA

; The M" switches to G' mode (after initial power up se?uence in G2/'7:T/' mode to obtain cellularnetwor# information- but ecludin (G)MM procedures with G2/' core networ#) and does not switch to

G2/'7:T/' mode. 5urin the initial power up se?uence in G2/'7:T/' mode the M" shallinore pain messae received throuh G2/'7:T/' networ#.

8.2 P"M Se#ecti&

There shall be no chane from the P>M' selection procedures in the '" layers (MM and above) in the M"- with theeception that in G' mode the in CP>M' bac#round scanL shall be disabled.

G'1 can be only connected to one P>M'.

The P>M' selection in the '" layers shall not lead to chane of mode between G2/'7:T/' mode and G'mode. or a specific instance of P>M' selection only P>M's available via G' or only P>M's available via

G2/'7:T/' are provided to the '" layer (i.e. no combination of the P>M's available via G2/'7:T/' andG').

&n the case of a G' capable M"- a G'1 selection process also may be re?uired as part of the process of establishinthe connectivity between the M" and the G'1. This ta#es place when- durin G' reistration- a G' capable M"may have a choice amon two or more G'1;P>M' pairs indicated by the 5efault G'1 (i.e. in the G;/1/2G&"T2/ /25&/21T messae). The G'1 selection process ta#es place while the M" is still in G2/'7:T/'mode (i.e. before the M" roves into G' mode) as followsA

Ihile a mobile station is attemptin to become G' reistered- the G'1 selection process shall attempt

G' reistration with the currently reistered P>M'.

&f G' reistration with the currently reistered P>M' is not possible and there are one or more remainin

G'1;P>M' pairs that were received within a G;/1 /2G&"T2/ /25&/21T messae- they shall all be

treated as havin sufficient received sinal ?uality and P>M' selection should be performed accordin to theP>M' selection rules of 3GPP T" **.+44 F83.

&f the M" does not have any stored information related to the "ervin G'1 for the cell &5 or P to which the M" iscurrently connected- the M" attempts to reister with the 5efault G'1 (always located in the =P>M') stored in M".The M" includes an indication- identifyin the G'1 as the 5efault G'1 in the G;/1 /2G&"T2/ /2B:2"Tmessae.

Ihen an M" attempts to reister on the 5efault G'1 includin an indication that it is in automatic P>M' selection

modeA

&f the 5efault G'1 wishes to serve the M"- the 5efault G'1 responds with a G;/1 /2G&"T2/ 112PT

messae.

&f the 5efault G'1 wishes to redirect the M" to another G'1 within the =P>M'- the 5efault G'1

responds with a G;/1 /2G&"T2/ /25&/21T messae- not includin a list of P>M' identities.

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&f the 5efault G'1 wishes to redirect the M" to a P>M' that is not the =P>M'- the 5efault G'1 responds

with a G;/1 /2G&"T2/ /25&/21T messae and includes a list of P>M's that may provide G' service tothe M" in its current location. The list contains one or more P>M' identities alon with the identities of their

associated G'1 and "2GI nodes (either in &P address or B5' format). ollowin the G'1 selectionprocess- the G;/1 shall attempt to reister on the associated G'1.

&f at any time the user wishes to perform manual P>M' selection or a H:ser reselectionH irrespective of whether the M"is in manual or automatic P>M' selection mode- the M" sends a G;/1 /2G&"T2/ /2B:2"T messae to the

5efault G'1- includin an indication that it is in manual P>M' selection mode. The 5efault G'1 is not allowed toaccept the reistration and responds with a G;/1 /2G&"T2/ /25&/21T messae and includes a list of P>M's thatmay provide G' service to the M" in its current location.

&f the M" includes the identity of the current servin networ# in the G;/1 /2G&"T2/ /2B:2"T messae- the5efault G'1 uses this to identify the list of P>M's to send to the M" in the response messae.

The G;/1 /2G&"T2/ /25&/21T messae may inform a mobile station that G' 7Gb mode- G' &u mode orboth G' 7Gb mode and G' &u mode are supported for each P>M' indicated by this messae.

fter successful reistration with a servin G'1- the M" shall not store the P>M' list. The M" shall not use the

P>M' list- provided to the M" durin the reistration procedure- for bac#round scannin.

'OT2A n M" cannot use Generic ccess in a CP>M' unless the =P>M' supports and authorises Genericccess.

fter enterin G' 7Gb mode- a mobile station may trier handover bac# to G2/'7:T/' mode by sendin a

G;1"/ ='5OC2/ &'O/MT&O' messae or G;P"/ ='5OC2/ &'O/MT&O' messae to the G'1and includin an ordered list of preferred G2/'7:T/' cells. fter enterin G' &u mode- a mobile station maytrier handover bac# to G2/'7:T/' mode by sendin a G;//1 /2>O1T&O' &'O/MT&O' messae tothe G'1 and includin an ordered list of preferred G2/'7:T/' cells. &n each case- the list of preferredG2/'7:T/' cells shall include cells havin the same P>M' as the currently reistered P>M' (if at least one suchcell is #nown to the M").

8.3 Re-se#ecti& 'etee& G+R%:TR% a&! G% !es

8.3.1 R7e-i& (r G+R%:TR% !e t G% !e)

This procedure is applicable only if G' service is available- a M" is not in '1* mode (as defined in 3GPP T" 68.++,

F4,) and has an M" preference forA

G';onlyE

G';preferred orE

G2/'7:T/';preferred and the M" cannot find a suitable G2/' cell or a suitable :T/' cell to camp

on.

ollowin successful G' reistration- the ccess mode in the M" is switched to G' mode. G;1"/ or G;//1entity in the M" reports to the '"- the '";related system information received in the G' /eistration Procedure.The '" considers the G'1 allocated cell &5- as the current servin cell.

Ihile in G' mode- an M" in G2/'7:T/';preferred mode may perform G2/'7:T/' cells monitorinaccordin to 3GPP T" 68.++, and follow the behaviours accordin to 3GPP T" *3.4**.

Ihile in G' mode- G2/';// and :T/' //1 entities are detached from the //;"P in the M"- as a result theentities do notA

inform '" about any G2/'7:T/' cell re;selection and7or the chane of system information of the current

campin cellE

inform '" about any newly found P>M' over G2/' or :T/'E and

act on any pain re?uest messae received over G2/' or :T/'.

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/ove;in may be applied to support 1" call re;establishment followin the loss of an // connection in G"M or tosupport pac#et service re;establishment followin abnormal T0 release with cell reselection in GP/". The support forcall re;establishment is indicated to the M" in the G' system information.

8.3.2 R7e-ut (r G% !e t G+R%:TR% !e)

This procedure is applicable when M" detaches from the eneric &P access networ#- and its mode selection isG';preferred or when M" finds a suitable G2/'7:T/' cell for campin on- and its mode selection isG2/'7:T/';preferred.

Ihen the M" detaches from the eneric &P access networ#- dependin on prevailin circumstances the M" may be ableto dereister first with the G'1.

or the G';preferred and G2/'7:T/';preferred mode selections- the M" detaches G;1"/ or G;//1 fromthe //;"P and re;attaches G2/';// or :T/' //1 to //;"P and restores normal G2/';// or :T/'//1 functionality.

or the G';only mode selection- G;1"/ or G;//1 remains attached to '" and the M" stays in G' mode (in

H'o "erviceH condition).

8.4 G% isc7er a&! Registrati& re#ate! $rce!ures

8.4.1 isc7er a&! Registrati& r Ge&eric %ccess

8.4.1.1 Ge&era#

The 5iscovery and /eistration procedures are applicable only if the M" preference is operatin in G';only- G';preferred or- if no allowable P>M' is available throuh G2/'7:T/'- in G2/'7:T/';preferred mode.

Once the M" has established a connection to the eneric &P access networ#- the mobile determines the appropriate

G'1;"2GI to connect to- by completin the 5iscovery Procedure to the Provisionin G'1 in the =P>M' of theM". The Provisionin G'1 provides the address of the 5efault G'1 in the =P>M' of the M"- to which themobile can reister.

The M" attempts to reister on the 5efault G'1 provided by the Provisionin G'1 durin the 5iscovery

procedure- by completin the /eistration Procedure. The 5efault G'1 may accept the /eistrationE redirect the M"to another G'1E or /eject the /eistration.

8.4.1.2 Securit Gatea !e&tiicati&

The (:)"&M of the M" contains the B5' (or &P address) of the Provisionin G'1 and the associated "2GI or the

M" derives this information based on information in the (:)"&M. &f the M" does not have any information about otherG'1s and associated "2GI stored- then the M" completes the 5iscovery procedure towards the Provisionin

G'1.

s part of the /eistration Procedure- the 5efault G'1 can indicate whether this G'1 and "2GI address or theaddress of a G'1 that the M" is bein redirected to- may be stored by the M".

The M" may also store "ervin G'1 information for "ervin G'1s with which the M" was able to complete asuccessful reistration procedure. The default G'1 is in control of whether the M" is allowed to store "ervin G'1information. &f there is no G2/'7:T/' coverae in the P location- the stored "ervin G'1 information shall beassociated with the P;&5. &f there is G2/'7:T/' coverae in the P location- the stored "ervin G'1

information shall be associated with the G"M 1G& or >& and :T/' 1&. The stored "ervin G'1 information isA

servin "2GI B5' or &P address followin successful reistrationE

servin G'1 B5' or &P address followin successful reistrationE and

optionally- "ervin G'1 T1P port followin successful reistration and if returned from the networ#.

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The number of such entries to be stored in the M" is implementation specific. Only the last successfully reisteredG'1 association shall be stored when the 5efault G'1 indicates that the M" is allowed to store these addresses. nM" may preferentially join a eneric &P access networ# point of attachment whose association with a "ervin G'1has been stored in memory.

On connectin to the eneric &P access networ#- if the M" has a stored "ervin G'1 for the P;&5 or the

G2/'7:T/' cell- the M" shall attempt to reister with the associated "ervin G'1 in its memory. The G'1may still reject the M" for any reason even thouh it may have served the M" before. The M" shall delete from itsstored list the address of the "ervin G'1 on receivin a reistration reject or if the reistration fails for any other

reason (e.. not receivin any response).

&f the M" does not receive a response to the /eistration /e?uest sent to the "ervin G'1 (and which is not the5efault G'1)- it shall re;attempt to reister with the 5efault G'1. &f the M" does not receive a response to thereistration re?uest sent to the 5efault G'1- it shall attempt the discovery procedure with the Provisionin G'1 inorder to obtain a new 5efault G'1.

&n the case when a M" is attemptin to reister or discover a G'1 after failin to reister on a G'1- the M"provides in the /eistration or 5iscovery procedure an indication that the M" has attempted to /eister on anotherG'1- the failure reason- and the G'1 and "2GI addresses of the failed reistration.

Ihen the M" connects to a eneric &P access networ#- for which it does not have a stored "ervin G'1 in it$smemory- it shall attempt to reister with the 5efault G'1.

8.4.1.3 G%* ca$a'i#ities

To be populated with G'1 specific information that needs to be transferred to the M" on successful reistration.

8.4.1.4 MS ca$a'i#ities

To be populated with G' specific capabilities of the M" that needs to be transferred to the G'1 durin reistrationand the interaction to what is reported to the 1' is ".

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The followin table enumerates the discovery handlin for the various combinations of M" and =ome P>M' G'mode capabilities.

Ta2le (1 GAN Mode Selection procedures associated with GAN Disco8er7

=ome P>M' G' Mode 1apabilities

M" G' Mode1apabilities

7Gb only &u only 0oth

7Gb only G'1A =andle as normalG' 7Gb mode discovery

M"A Proceed withreistration

G'1A 'o G' Mode"upport informationprovided or G' 7Gbmode (only) indicated byM"- therefore /eject

(:nspecified)

M"A /etry on net power;on

G'1A 'o G' Mode"upport informationprovided or G' 7Gbmode (only) indicated byM"- therefore handle as

normal G' 7Gb modediscovery. ssin M" toG' 7Gb;capableG'1.

M"A Proceed with

reistration

&u only G'1A =andle as normalG' 7Gb mode discovery

M"A Proceed with

reistration

G'1A G' &u Mode"upport (only) indicated byM"- therefore accept andassin M" to G' &u modecapable G'1.


G'1A G' &u Mode"upport (only) indicated byM"- therefore accept andassin M" to G' &u modecapable G'1.


0oth G'1A =andle as normal

G' 7Gb discovery


G'1A "upport for both

modes indicated by M"-therefore accept and assinM" to G' &u modecapable G'1.


G'1A "upport for both

modes indicated by M"-therefore accept and assinM" to G' 7Gb modecapable G'1 or G' &umode capable G'1 ('ote4).


'ote 4A The G'1s choice of G' &u mode versus G' 7Gb mode may be based on other information receivedin the G' discovery messae from the M"- information stored in the G'1- and on operator policy.

The default or servin G'1 may use the received G' Mode "upport information to redirect the M" to a differentG'1 or a different T1P port on the current G'1. The G' &u mode capable G'1 shall also indicate the G'

mode to use for the current session in the G' Mode &ndicator &2.

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The followin table enumerates the reistration handlin for the various combinations of M" and 5efault7"ervinG'1 G' mode capabilities.

Ta2le $1 GAN Mode Selection procedures associated with GAN Re#istration

5efault7"ervin G'1 G' Mode 1apabilities

M" G' Mode1apabilities

7Gb only &u only 0oth

7Gb only G'1A =andle as normalG' 7Gb modereistration

M"A Proceed per G'

7Gb mode procedures

G'1A 'o G' Mode"upport informationprovided or G' 7Gbmode (only) indicated byM"- therefore /eject

(&nvalid G'1)

M"A ttempt reistrationwith 5efault G'1 or re;discovery (per G' 7Gbmode procedures)

G'1A 'o G' Mode"upport informationprovided or G' 7Gbmode (only) indicated byM"- therefore handle as

normal G' 7Gb modereistration. &f re?uired-redirect M" to G' 7Gbmode capable G'1.

M"A Proceed per G'

7Gb mode procedures

&u only G'1A =andle as normalG' 7Gb modereistration

M"A 'o G' Mode"election provided byG'1- therefore5ereister and treat asreister reject (&nvalidG'1)

G'1A G' &u Mode"upport (only) indicated byM"- therefore accept andsend G' Mode &ndicatorR G' &u mode

M"A Proceed per G' &umode procedures

G'1A G' &u Mode"upport (only) indicated byM"- therefore accept andsend G' Mode &ndicatorR G' &u mode.


0oth G'1A =andle as normalG' 7Gb modereistration

M"A 'o G' Mode"election provided by

G'1- therefore proceedper G' 7Gb modeprocedures

G'1A "upport for bothmodes indicated by M"-therefore accept and sendG' Mode &ndicator RG' &u mode


G'1A "upport for bothmodes indicated by M"-therefore accept and sendG' Mode &ndicator RG' &u mode or G'7Gb mode ('ote 4). &f

re?uired- redirect M" toG' &u mode or G'7Gb mode capableG'1.

M"A Proceed per G' &u

mode or G' 7Gb modeprocedures

'ote 4A The G'1s choice of G' &u mode versus G' 7Gb mode may be based on other information receivedin the G' reistration messae from the M"- information stored in the G'1- and on operator policy.

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8.4.1.5 isc7er Prce!ure

8.4.1.5.1 ra# *ase

Ihen an M" supportin G' first attempts to connect to a G'- the M" needs to identify the 5efault G'1. 2achG' capable M" can be confiured with the B5' (or &P address) of the Provisionin G'1 and the associated

"2GI or the M" can derive this B5' based on information in the (:)"&M (see 3GPP T" *3.++3 F63). The M" firstconnects to a Provisionin G'1;"2GI and G'1 in the =P>M' of the M"- by establishin a secure &Psec tunneland a T1P connection usin the provisioned or derived addresses. The M" obtains the B5' or &P address of the

5efault G'1 in the =P>M' and the associated "2GI- throuh the 5iscovery procedure.

&f no G2/'7:T/' coverae is available when an M" connects to the G'1 for G' service- then the G'1cannot necessarily determine the location of the M" for the purposes of assinin the M" to the correct servin G'1(e..- to enable handover and location;based services). The G'1 shall permit the operator to determine the servicepolicy in this caseE e.. the operator could provide service to the user with certain limitations (possibly with a user

interface indication on the M").

'OT2A Ihen the M" initiates the 5iscovery7/eistration procedures and no G2/'7:T/' coverae isavailable- the G'1 may have insufficient information to correctly route subse?uent emerency calls.

0i#ure (*1 Disco8er7 procedure

&n the description below it is assumed that the M" has a mode selection of G';only or G';preferred orG2/'7:T/';preferred and that the M" has already connected to the eneric &P access networ#.

'OT2A &t is implementation specific what sinal level should be deemed as sufficient for trierin the G'5iscovery and /eistration procedures.

4. &f the M" has a provisioned or derived B5' of the Provisionin "2GI- it performs a 5'" ?uery (via theeneric &P access networ# interface) to resolve the B5' to an &P address. &f the M" has a provisioned &Paddress for the Provisionin "2GI- the 5'" step is omitted.

*. The 5'" "erver returns a response includin the &P ddress of the Provisionin "2GI.

3. The M" establishes a secure tunnel to the Provisionin "2GI.

6. &f the M" has a provisioned or derived B5' of the Provisionin G'1- it performs a 5'" ?uery (via thesecure tunnel) to resolve the B5' to an &P address. &f the M" has a provisioned &P address for the ProvisioninG'1- the 5'" step will be omitted.

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8. The 5'" "erver returns a response includin the &P ddress of the Provisionin G'1.

9. The M" sets up a T1P connection to a well;defined port on the Provisionin G'1. &t then ?ueries the

Provisionin G'1 for the 5efault G'1- usin G;/1 5&"1OC2/N /2B:2"T. The messae containsA

; 1ell &nfoA 2ither current campin G2/'7:T/' cell &5- or last >& where the M" successfullyreistered- alon with an indicator statin which one it is.

; Generic &P access networ# attachment point informationA P;&5- as defined in anne 1.

; M" &dentityA &M"&.

; G' 1lassmar#A &ncludin G' Mode "upport information indicatin G' 7Gb mode supported- G' &umode supported or both modes supported.

M' to optimi!e networ#performance.

,. &f the Provisionin G'1 cannot accept the G;/1 5&"1OC2/N /2B:2"T messae- it returns a G;/15&"1OC2/N /2S21T messae indicatin the reject cause.

@. The secure &Psec tunnel to the Provisionin "2GI is released. &t shall also be possible to reuse the same &Psectunnel for G' /eistration procedures. &n this case the &Psec tunnel is not released.

8.4.1.6 Registrati& $rce!ure

8.4.1.6.1 ra# case

ollowin the 5iscovery procedure the M" establishes a secure tunnel with the secure ateway of the 5efault G'1-provided by the Provisionin G'1 in the 5iscovery procedure- and attempts to reister with the 5efault G'1. The5efault G'1 may become the "ervin G'1 for that connection by acceptin the reistration- or the 5efault G'1

may redirect a M" performin reistration to a different "ervin G'1.

G'1 redirection may be based on information provided by the M" durin the /eistration procedure- operator chosenpolicy or networ# load balancin.

The G' /eistration procedure serves the followin functionsA

2nsures the M" is reistered to the appropriate G'1 entity i.e. with use of the redirection processE

&nforms the G'1 that the M" is now connected throuh a eneric &P access networ# and is available at a

particular &P address. The G'1 maintains the reistration contet for the purposes of (for eample) mobile;terminated callinE

Provides the M" with the operatin parameters associated with the G' service- includin the G' mode to

use for the session- either 7Gb or &u. The H"ystem &nformationH messae content that is applicable to the G'cell is delivered to the M" durin the G' reistration process. This enables the M" to switch to G' mode-and followin the /eistration procedure trier '" procedures with the core networ# (such as

>ocation7/outin rea :pdate- mobile oriinated calls- mobile terminated calls- etc.)E and

2nables the M" to re?uest which G' services are re?uired.

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=T+ The G%-R* R+GST+R R+R+*T essage a c&tai& a si&g#e Ser7i&g S+G> a&! G%* a!!ress ra #ist P"M i!e&tities a&! assciate! Ser7i&g S+G> a&! G%* a!!resses? a&! a& &!icati& hether G%* a!!ress(es) ca& 'e stre! i& the MS r uture use.

0i#ure ((1 Re#istration procedure

4. &f the M" was provided the B5' of the 5efault or "ervin "2GI- the M" shall perform a 5'" ?uery (via theeneric &P access networ# interface) to resolve the B5' to an &P address. &f the M" has a provisioned &Paddress for the "2GI- the 5'" step is omitted.

*. The 5'" "erver returns a response.

3. The M" shall then set up a secure &Psec tunnel to the "2GI. This step may be omitted if an &Psec tunnel is beinreused from an earlier 5iscovery or /eistration.

6. &f the M" was provided the B5' of the 5efault or "ervin G'1- the M" shall then perform a 5'" ?uery(via the secure tunnel) to resolve the B5' to an &P address. &f the M" has an &P address for the G'1- the5'" step is omitted.

8. The 5'" "erver returns a response.

9. The M" then sets up a T1P connection to a T1P port on the G'1. The T1P port can either be a well;#nownport or one that has been earlier received from the networ# durin 5iscovery or /eistration. The M" shallattempt to reister on the G'1 by transmittin the G;/1 /2G&"T2/ /2B:2"T. The messae includesA

; 1ell &nfoA 2ither current campin G2/'7:T/' cell &5- or last >& where the M" successfullyreistered- alon with an indicator statin which one it is. &n addition- the M" includes the :/1' of thecurrent servin cell (if that cell is a :T/' cell).

; Generic &P access networ# attachment point informationA P;&5- as defined in anne 1.

; M" &dentityA &M"&.

; M" 1apability &nformation.

; G' "ervices /e?uired

; G' 1lassmar#A &ncludin G' Mode "upport information indicatin G' 7Gb mode supported- G' &umode supported or both modes supported.

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M' colour code- and base;station colour code

correspondin to the G' cell.

&f G' &u mode selectedA The :T/ /1' (:/1') and Primary "cramblin 1ode (P"1)

correspondin to the G' cell.

>ocation;area identification comprisin the mobile country code- mobile networ# code- and location area

code correspondin to the G'1 cell.

1ell identity identifyin the cell within the location area correspondin to the G' cell.

pplicable system timer values (e..- for the application;level #eep;alive mess

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