07-GSM and UMTS Basic Subscription

5/22/2018 07-GSM and UMTS Basic Subscription

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Alcatel University8AS902001643VHZZA Ed.027.1

7 GSM and UMTS basic subscriptions


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7 GSM and UMTS basic subscriptionsSession presentation

Objectives :

To be able to describe and manage the basicsubscription for both Global Systems for Mobilecommunications (GSM) and Universal MobileTelecommunications system (UMTS) networks.

To be able to describe the basic services(bearer services, teleservices) and GPRSservice, that network operators can offer to

mobile subscribers in GSM and UMTSnetworks.


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7 GSM and UMTS basic subscriptionsContents

Program : Page

7.1 GSM and UMTS networks 7.4

7.2 Basic services 7.8

7.3 GSM & UMTS Authentication Data 7.13

7.4 Basic Subscription 7.25 7.5 Models 7.43

7.6 Subscription modification 7.47


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7.1 GSM and UMTS networks


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7.1 GSM and UMTS networksPresentation

Basic services management in GSM and UMTS networks :

opening, setting up and managing bearer services, teleservices, andGPRS service

Bearer services offered in GSM and UMTS networks:

network capacities needed for voice and data transmission

Teleservices offered in GSM and UMTS networks :

as basic component of user subscriptions

Functions common to basic services in GSM and UMTSnetworks :

InterWorking functions (IWF) for data transmission and thenumbering process common to both bearer services and

teleservices General Packet Radio Service (GPRS) in GSM and UMTS

networks :

packet mode data service


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7.1 GSM and UMTS networksTerminologic conventions

Standard GSM and UMTS terminology have to be applied :

UE = User Equipment or the Mobile Station (MS) whetherthe subscriber is in a GSM or a UMTS network

USIM = Subscriber Identity Module (SIM) or a UniversalSIM(USIM)

CSCN = Circuit-Switched Core Network. It offers GSM and

UMTS services depending on which type of network itbelongs to

PSCN = Packet-Switched Core Network. It offers GPRSservices

RAN = Radio Access Network, it represents Base StationSubsystem (BSS in GSM) and/or Universal Terrestrial Radio

Access Network (UTRAN in UMTS).


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7.7

RAN

7.1 GSM and UMTS networksArchitecture

CSCN

PSCN

PSTN

ISDN

PDN

(IP)

HLR

MSC GMSC

SGSN GGSN

RNC

BSC

Data & Speech

Signalling

UE

CSCN : Circuit-Switched Core Network

PSCN : Packet-Switched Core Network

Circuit oriented

services: BS, TS

Packet oriented

services: GPRS

PLMN : GSM & UMTS


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7.2 Basic services


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7.9

7.2 Basic servicesDefinition

Basic servicesare telecommunication services provided by a GSM and/orUMTS PLMN. They are divided into three categories:

Bearer Services (BS)that provide binary signals point-to-pointtransmission capability.

Bearer services offered on subscription concern circuit mode datatransmission.

They are characterized by their access type (synchronous orasynchronous) and their speed (0.3 to 64 kbit/s).

Teleservices (TS)that provide complete connection capacities,including terminal equipment definitions, for communications betweentwo or more users.

The teleservices are made up of voice transmission services(speech), short message services and facsimile services.

General Packet Radio Services (GPRS)that enables the mobilesubscribers to send and receive data in an endtoend packet transfermode without using network resources in circuit switched mode.


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7.10

7.2 Basic servicesDefinition

3GPP recommendations :

BS :

definition described in TS 22.002 structure described in TS 22.001.

TS :

definition described in TS 22.003

structure and their list of attributes described in TS 22.002.

Note :

In GSM specifications, Basic Service Groups (BSG) are identified asBS2x and BS3x In the Alcatel solution, BSGs are identified as BS20and BS30.

In UMTS specifications, General Bearer Services (GBS) are identified asBS20 and BS30 In the Alcatel solution, General Bearer ServicesGBSs are identified as GBS20and GBS30.


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7.11

7.2 Basic servicesMapping with PLMN bearer capabilities

BSG BS Definition Network

SPEECH TEL TS11 Telephony service GSM & UMTS

TS12 Emergency service GSM & UMTS

SMS TS21 SMSMT = Short message service-mobile terminated GSM & UMTS

TS22 SMSMO = Short message service-mobile originated GSM & UMTS

TS60 TS 61 FAX61 = Alternate speech and facsimile Group 3 GSM & UMTS

TS 62 FAX62 = Facsimile Group 3 GSM & UMTS

BS20 BS2x BS 21 Data Circ. Duplex Async., 300 bit/s, 3.1kHz & UDI GSM

BS 22 Data Circ. Duplex Async., 1200 bit/s, 3.1kHz & UDI GSM

BS 24 Data Circ. Duplex Async., 2400 bit/s, 3.1kHz & UDI GSM BS 25 Data Circ. Duplex Async., 4800 bit/s, 3.1kHz & UDI GSM

BS 26 Data Circ. Duplex Async., 9600 bit/s, 3.1kHz & UDI GSM

GBS20 All asynchronous data services UMTS

BS 61 Alternate speech and data GSM

BS 81 Speech followed by data GSM

BS30 BS3x BS 31 Data Circ. Duplex Sync., 1200 bit/s, 3.1kHz & UDI GSM

BS 32 Data Circ. Duplex Sync., 2400 bit/s, 3.1kHz & UDI GSM



GBS30 All synchronous data services UMTS

Packet GPRS General Packet radio service GSM & UMTS


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7.12

7.2 Basic servicesTransmission modes

Two transmission modes are defined in the part internal to thePLMN:

Transparent mode (T), in which the data is transmittedunprocessed between the terminal and the IWF.

Non Transparent mode (NT), in which the RLP (Radio LinkProtocol) is implemented between the terminal and the IWF.

This protocol is similar to the HDLC protocol, andsecures transmission.

However, it causes uncontrolled delays because of therepetition procedures to counteract bad transmissions.


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7.13


7.3 GSM & UMTS Authentication Data

7 3 GSM & UMTS A th ti ti D t


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7.14

7.3 GSM & UMTS Authentication DataNeeds

To take out a subscription, all mobile subscriber data must be created in AUCbeforehand !

For the circuit-switched services and packet-switched services, the role of the HLR is :

to respond to a request for authentication information sent for the GPRS by theSGSN.

to respond to a request for authentication information sent for the GSM/UMTS bythe MSC.

The Authentication Center (AuC), assigns the security triplets in GSM andquintets in UMTS, required for the GPRS or TS/BS, to the HLR, which directsthem to the SGSN or MSC for registration.

An authentication information request can occur during :

OC, TC, Handover, SS management, GSM/UMTS attachment procedure, GSM/UMTS Location Update,

GPRS attachment procedure, GPRS routing area update,

PDP context activation or deactivation.

7 3 GSM & UMTS A thentication Data


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7.15

7.3 GSM & UMTS Authentication DataAuthentication key

The personal authentication key Ki(GSM subscriber) or K(UMTS subscriber) is assigned to the subscriber with his IMSI.

It is not known to the subscriber.

The key is used during the procedure for authenticating thesubscribers identity.

The personal authentication key is stored :

in the SIM or USIM card.

in the AuC.

7 3 GSM & UMTS Authentication Data


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7.16

7.3 GSM & UMTS Authentication DataAuthentication Vector

The data authenticating the subscriber is the AV(Authentication Vector).

AVs are triplets for GSM subscribers and quintets for UMTS subscribers.

AVs are created in the AuC. They are transmitted to the VLR via the HLR inthe following way (see note below) :

1. The HLR stores n AV for each subscriber as supplied by the AuC.

2. These n AV are transmitted to the VLR or to the SGSN on request.

The HLR then asks for n new AV from the AuC.

Each authentication procedure requires one AV. When only one AV remains

available in the VLR (or in the SGSN), n new AV are requested from the HLR.

Note : The number n varies depending on the VLR/SGSN version.



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7.17

7.3 GSM & UMTS Authentication DataGSM authentication data

GSM authentication data :

The AV3for GSM subscribers is a triplet with the followingelements:

RAND: random number

SRES: signed response, based on Ki and RAND, using

algorithm A3.Kc: ciphering key, based on Ki and RAND, using

algorithm A8.

Note : a triplet can be used again when the retrieval of newtriplets from the HLR fails.



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7.18

Ki

RAND

A3 A8

SRES Kc

AV3:= RAND || SRES || Kc

16 bytes4-16 bytes

16 bytes

16 bytes

Authentication Vector Generation in AUC for GSM network

7.3 GSM & UMTS Authentication DataAuthentication Vector AV3Generation in AUC

Also in SIM

HLRFive triplets AV3are calculated and sent to HLR

Subscriber



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7.19

7.3 GSM & UMTS Authentication DataUMTS authentication data (1)

UMTS authentication data

The AV5for UMTS subscribers is a quintet with the following elements :

RAND: random number XRES: expected response, based on K and RAND, using algorithm f2.

CK: ciphering key, based on K and RAND, using algorithm f3.

IK: integrity key, based on K and RAND, using algorithm f7.

AUTN: authentication token, created from :

SQN: sequence number, used to number the quintet,

AMF: authentication management field, used to send particularinformation to the USIM card (security information for example). The AMF can be modified by the operator. [ see MODAMF :

AMFVAL = H'xxxx from H'0000 to H'FFFF]

The quintets are sent to the VLR in a given order. They must be used in thesame order.

A quintet is used only once. It is deleted: from the HLR after it has been sent to the VLR,

from the VLR when the authentication procedure is complete.



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7.21

Authentication Vector Generation in AUC for UMTS network

7.3 GSM & UMTS Authentication DataAuthentication Vector AV5Generation in AUC

GSM equivalent

K

RAND

f2 f3

XRES CK16 bytes4-16 bytes

16 bytes

16 bytes

Also in USIM

HLR

Five quintets AV5are calculated and sent to HLR

Subscriber

f4

IK16 bytes

SQNAMF

16 bytes

RAND XRES CK IK AUTNAV5:= || || || ||

f5

AK

f1

MAC

( SQN AK ) || AMF || MAC



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7.22

7.3 GSM & UMTS Authentication DataUMTS to GSM authentication data translation

XRES

Translation from quintets to triplets

RAND3

SRES = XRESa xorXRESb xorXRESc xorXRESd

KC = CKHxorCKLxorIKHxorIKL64XX : size in bits

H : High bits

L : low bits

1

2

3

AV3=

AUTNIKCKRAND5AV5 = || || || ||

XRES = XRES || 0.0= XRESa || XRESb || XRESc || XRESd

128

32 32 32 32 32

128

32 32 32 32



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7.23

7.3 GSM & UMTS Authentication DataMMC Security fonction at the AUC

CREAUK:

PLMNID = MCC-MNC ( 5 possibilities )

MSIN = subscriber part of IMSI : (10 or 9 digits max)

KI = authentication key (Ki or K) : 4x8 hexadecimal digits

UMTS =Y UMTS subscriber

F15V = 0 to 3, f1-f5 algorithms version (default : 0 )

N GSM subscriber

A38V = versions of A3 & A8 algorithms



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7.24

1. Create the new authentication data in theAuCusing the CREAUKcommand.

2. Replace the old IMSIin the HLR with the new one without touching the subscription data usingthe CHAMSIcommand.

3. Delete the old authentication data from theAuCusing the DELAUKcommand.

The declarations made at the AuC can be verified with the INTAUKcommand, which can beused to obtain :

Number of records used and maximum number of records in the database (DATAKN =MSNB)

The list of MSINs registered in the database, where appropriate within the required range

HLRAuCSIM

Ki1-- IMSI1 IMSI1 subscription dataKi1-- IMSI 1

HLRAuCSIM

Ki1-- IMSI1 IMSI1 subscription dataIMSI2

Ki2-- IMSI 2Ki2-- IMSI2

In case of :SIM card is lost , brokenor stolen,

Authentication data modification


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7.4 Basic Subscription



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7.26

pFunctional architecture

PAD

TA

A/S

DCE

DCE

PSPDN

ISDN

PSTN

RAN

RCP

SSP

BS (A)

Fax3

BS (S)

IWF

Speech

Signalling

Data



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7.27

General

A basic subscription is made up of the following data :

subscribers identity, the International Mobile Subscriber Identity (IMSI)

subscribers user equipment identification number, Mobile Subscriber ISDN

Number (MSISDN),

access capability to the GSM/UMTS network in circuit mode and/or theGPRS/UMTS network in packet mode,

bearer and teleservices subscriptions,

supplementary services subscriptions,

service and roaming rights,

authentication data.

Each user of the mobile network has a basic subscription.

Every subscriber is provided with continuity of service over the whole GSM and UMTSnetwork system.

The characteristics of this subscription are registered in the (HLR) of the Home PLMN

HLR does not differentiate between UMTS and GSM subscribers, but only

according to the subscribed services.



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7.28

Creation

The CRESBRcommand is used to allow the definition of the initial characteristics of amobile subscriber in the HLR data base

Main parameters :

MSIN: mobile subscriber identification number

BSERV : basic services subscribed to and associated directory number

BSWOSN:used to assign a BSV without attaching a directory number

CAT: subscription category

SURES: roaming rights granted

MSBARR : administrative status after creation SNNOT: New location server notification (Welcome Service)

VLRSGSN notification of change of VLR

PLMN notification of change of PLMN

COUNTRY notification of change of country

Dedicated parameters : OCSM, TCSM, : Camel marks (phase 1)

CARRIER: Long distance Carrier selected

HLR

7.4 Basic SubscriptionTS / BS i i i h d i


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7.29

TS / BS : circuit-switched services

CRESBR

BSERV = SN - TS or BS

example: BSERV = 108765-TEL+108768-FAX62 the speech service will be accessible using the directory

number SN = 108765

the facsimile service will be accessible using the directorynumber SN = 108768

BSWOSN= TS or BS

example: BSWOSN = SMSMT

the short message delivering will use the main MSISDN or thealert MSISDN (see ALERTNB parameter)

example: BSWOSN = BS21TC

As no number is linked to a BS or a TS, the GSM BC and the

BS/TS involved in the call are determined from the ISDN.When it is impossible to deduce the GSM BC, the call ispresented to the mobile without a GSM BC. The called partycan then choose the BS or TS.

7.4 Basic SubscriptionM lti di i i it it h d i (1)


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7.30

Multimedia service : circuit-switched services (1)

In UMTS networks, General Bearer Services (GBSs) are bearer services definedindependently from the user rate and replacing individual bearer services.

GBSs (all data asynchronous, all data synchronous) provide subscribers with the

capacity to transmit binary data over the circuit-switched mobile network.

GBSs are mandatory under UMTS coverage. A subscription to a GBS comprisesthe subscription to all individual bearer services of its associated group.

A subscriber can not have a simultaneous subscription to a GBS and to

any of the individual bearer services covered by this GBS.

The Alcatel UMTS network supports bearer services : GBS20, all circuit data asynchronous general bearer services, with the following

services:

3.1 khz audio outside the PLMN,

V110 (rate adaptation protocol) Unrestricted Digital Information (UDI),

GBS30, all circuit data synchronous general bearer services, with the followingservices:

Multimedia:

56 kbit/s, Restricted Digital-Information (RDI),

64 kbit/s, UDI.

7.4 Basic SubscriptionM lti di i i it it h d i (2)


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7.31

Multimedia service : circuit-switched services (2)

CRESBR

BS =GBS20orGBS30

The mobile subscriber must be first created.

To provision a GBS20 / GBS30 service to a mobilesubscriber in the HLR :

a) List the characteristics of the subscriber to checkthe services already provisioned (INTSBBR)

b) provision the required GBS20 / GBS30 service tothe subscriber using command CHASBR

see later how to change a GSM subscriber into a UMTS

subscriber

7.4 Basic SubscriptionGPRS : packet switched service


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7.32

GPRS : packet-switched service

The GPRS is a GSM phase 2+ service, that applies also to UMTS (see 3GPPrecommendations TS 23.060).

It enables the mobile subscribers to send and receive data in an endtoend packet transfer mode, without using network resources in circuitswitched mode.

Transfer in packet mode is an efficient way to use radio and fixednetwork resources, (resources are allocated only when a packet istransferred).

The GPRS subscription is characterised by a set of elements used to :

define access means by the subscriber to the PDN

define the transmission path of short messages (GPRS or NSS)

As for the NSS, the HLR delivers the mobile subscriber's location informationby registering the SGSN address used to reach the subscriber [the SGSNmay be in the HPLMN or another PLMN (FPLMN)].

7.4 Basic SubscriptionGPRS : dedicated parameters


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7.33

GPRS : dedicated parameters

GPRS access is defined by models called "PDP models".

CRESBR

BSERV = SN - GPRS bearer operating mode

NAM = network access mode

GPRSONLYaccess to GPRS only (packet data)

NONGPRSaccess to NSS only (default value)

BOTHaccess to GPRS and NSS

TXSMOPT = short message transfer option

VIASGSNtransfer of short message via SGSN

VIAVLRtransfer of short message via VLR

PDPMODEL = PDP model number (0 to 999)

PDPADRS = PDP address (by default, assigned dynamically)

for IP version 4 : 8 hexadecimal characters

for IP version 6 : 32 hexadecimal characters for X.25 : 2 to 12 hexadecimal characters

APNAME = access point name (if not present in the PDP model)

up to 62 ASCII characters (string of labels separated by a period character)

7.4 Basic SubscriptionGPRS : definition of a PDP context


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7.34

GPRS : definition of a PDP context

A PDP(Packet Data Protocol) defines the PDN access.

It corresponds to a GPRS subscription for a packet address. The subscriber can subscribe to several PDP contexts

Each context comprises a set of parameters :

An identity: PDP model number

The type of packet data protocol to be used :

IP version 4,

IP version 6,

X25

The data transmission quality required

An access point identity range indicator (intra-PLMN or inter-PLMN)

The name of the access point

7.4 Basic SubscriptionGPRS : creation of a PDP model


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7.35

GPRS : creation of a PDP model

MODPDP

PDPMODEL = PDP (Packet Data Protocol) model number (0 to 999)

At least one of the optional parameters is mandatory

PDPTYPE = PDP model type

IPV4 IP version 4 access

IPV6 IP version 6 access

X25 X.25 access

QOS = quality of service (prec - del - rel - peak - mean)

prec = PREC1 to PREC3packet priority class

del = DEL1 to DEL4packet delay class

rel = REL1 to REL5protocol reliability class

peak = PEAK1 to PEAK9peak rate class for data transfer

mean = MEAN1 to MEAN18mean rate class for data transfer

VPLMNACC = VPLMN access indicator

NOthe access point name can be used only in the HPLMN (default value)

YES the access point name can be used in the HPLMN and the VPLMN

APNAME= access point name (parameter included if the model is linked to a singleaccess point) up to 62 ASCII characters (ex: www.alcatel.fr) [* = all]

7.4 Basic SubscriptionGPRS : deleting / interrogating PDP models


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7.36

GPRS : deleting / interrogating PDP models

DELPDP

PDPMODEL= PDP model number

INTPDP

PDPMODEL= PDP model number number of the first PDP model in the list < number of the last PDP model

in the list

LSTPAR= option to list all the parameters of the models or just the modelnumber

YESoutput the data for each PDP model (default value)

NOoutput PDP model numbers only

7.4 Basic SubscriptionSubscription categories


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7.37

MSC

OMC

Subscription categories

CAT: There are two main subscription categories :

Ordinary category,

Hot Billing :

the CDRs generated by the RCPs are immediatelytransferred to the OMC facilitating faster billing

RAN

7.4 Basic SubscriptionRoaming rights


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7.38

HPLMN

FPLMN

NPLMN

FPLMN

Roaming rights

in the HPLMN(Home PLMN),

in the HPLMN + all agreed FPLMN(foreign PLMNs).

a predefined list of PLMNs(includingthe HPLMN!).

a set of predefined listsof PLMNs.

certain predefined regional subscriptionzones. These may be in the HPLMN

only or in two or three PLMNs(including the HPLMN).

certain predefined subscription zones +all agreed FPLMNsother than thosecontaining subscription areas.

the HPLMN + all agreed NPLMNs + all

agreed FPLMNs.

7.4 Basic SubscriptionRoaming rights


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7.39

Roaming rights

If SURESparameter is provided with :

PLvalue, then RLN parameter is mandatory.

REGSUBOPor REGSUBFP, then at least one list (RSZIL0n) must beprovided.

LISTS, then parameter LISTS is mandatory.

RGSUBPLM, then parameters RLN and RSZIL0n are mandatory;

RGSUBLIS, then parameters LISTS and RSZIL0n are mandatory.

When SURES is left blank when creating from a model and if at least one ofthe parameters RLN, LISTS and/or RSZIL0x are entered in the command, theSURES value existing in the model is used to check the compatibility of theparameters entered.

For more details, see chapter Roaming Restrictions

7.4 Basic SubscriptionLocked state during subscription creation


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7.40

g p

The locked stateprevents a subscriber from making or receivingcalls.

This enables subscriptions to be created in advance, to be

unlocked only when they are sold to a subscriber.

MSBARR :

LAN Lock for administrative requirements, UAN Unlock for administrative requirements,

Networks where operator-determined barring restrictions are not implemented

The locked state can be unlocked either by subscription modification command

Networks where operator-determined barring restrictions are implemented

When a subscription is created, declaring it "locked for administrative

requirements" causes the ODBOCand ODBICcategories to be set for thesubscribers.

So, to unlock a subscription, you have to delete these two ODB categories.

HLR

7.4 Basic SubscriptionCamel related parameters


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7.41

p

The CAMEL features (not under the scope of this course) are authorisedaccording the activation of the relevant options (phases 1, 2, 3) :

OCSM: Originating CAMEL service marks

TCSM: Terminating CAMEL service marks

SMOCSM: Short Message Outgoing CAMEL service marks

MCSM: Mobility Management CAMEL service marks

TIFCSI: call forwarding registration not controlled by HLR.

INFREQ: Subscriber Information Requested

SNNOTIF: Service Node Notification

COCSAR: CAMEL Originating Call Service Activation Restricted.

CAMINH: PLMN's Camel Interworking

see command MODCAM, MODCA2, MODCA3 for full CAMEL parameters

handling

7.4 Basic SubscriptionOC Call with CAMEL PPS service invocation


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7.42

RCF

SSP BSC

Create, retrieve (CIC)

CIC31

Create (ISDN)

CIC6

Retrieve_RES(CIC31)

IAM (ISDN)ACM

Event (ACM)JOIN

ANM

Event (ANM)

PSTN

SCP

Initial DPRequest-Report-BCSM-Event

ConnectEvent-Report-BCSM

$$$ Enoughcredit ?

Yesthen

connect !Nothenrelease !

VLRCamel Marks =

Service key = PPS

@SCP = CCNDCxxx

7.4 Basic SubscriptionLong distance carrier selection


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7.44

When a subscription is created (CRESBR), the CARRIERparameter can be used to assign thechoice of a carrier.

CARRIER= type- plan- carrier identity

type=

ITU ITU standardised network identification type

NAT national network identification type NUL to cancel a previous value

plan= 0 to 15

identity= 1 to 4 digits

CARRIER 1

CARRIER 2

CARRIER 3

PLMN a

PLMN b

PSTN


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7.5 Models

7.5 ModelsCreation with model : principle


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7.46

This function facilitates the creation of subscribers (at the HLR),by basing creation on the retrieval of predefined models (andtherefore by reducing the number of operator commandsneeded to create subscribers).

Change or deletion of a model will not retroactively affect thesubscribers deriving from that model.

Any combination of data can be assigned to a model, BUT few withpredetermined values like :

MSIN = MODELXXX XXX range from 000 to 999 to identify the model

number, MS_ISDN = MODELSN a subscriber pseudo-number used as the value

for the SNfield of the BSERV parameter.

HLR

Models List

7.5 ModelsCreation with model : How to do (1)


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7.47

Creating a model

CRESBR:

MSIN = MODELXXX,

BSERV = list of MODELSN-BCNs, etc.

Modifying a model

CHASBR:

MSIN = MODELXXX,

etc.

Deleting a model

DELSBR:

MSIN = MODELXXX

Creating a subscriber from a model

CRESBR:

MSIN = MS identification number,

MODEL = MODELXXX

BSERV = list of SN-BCNs,

etc....

HLR

Models List

7.5 ModelsCreation with model : How to do (2)


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7.48

Interrogating a model

INTSBRor DISSBR:

MSIN = MODELXXX

Listing models

LSTSBC:

MSIN = MODELXXX < MODELYYY;

Other commands

The commands ENTCFS, CANCFS, ENTCBS, CANCBS, ENTGCS, CANGCS, ENTCUG,CANCUG, ENTODBand CANODBapply to the models, using the parameter MSIN =MODELXXX.

Depending on PLMN data, basic services (without subscriber number) and/orsupplementary services will be implicitly provided on the mobile subscribercreation without use of a model or on creation of a model.


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7.6 Subscription modification

7.6 Subscription modificationModifying the basic data (1)


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7.50

CHASBR: Change Subscriber characteristics

Basic services (BSV) to be deleted must be specified in

OBSERVor OSNBSVparameter for those attached to an SN and OBSWOSNparameter for those not attached to an SN.

Basic services (BSV) to be added must be specified in

NBSERVor NSNBSV parameter for those attached to an SN and

NBSWOSNparameter for those not attached to an SN.

Its possible to switch from the "ordinary" category to the "Hot Billing"

category and vice versa using the CATparameter.



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7.51

HPLMN

FPLMN

NPLMN

FPLMN


SURESparameter is used to specify roamingrights (same way as for creating a subscription).

CANLSTALparameter lets you delete one ormore lists of PLMNs.

Regional subscription : defined by the SURESparameter = REGSUBOP, REGSUBFPREGSUBPLM or REGSUBLIS :

The RSZs authorized for roaming can beredefined in the RSZIL01, RSZIL02 andRSZIL03 parameters.

DELRSZIL parameter lets you delete allthe RSZs of a single PLMN at the sametime in RSZIL0i.



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7.52


In networks where ODB is not available,it is possible using the MSBARRparameter to lock or unlock a subscription, specifying the reason :

LAN = Subscriber locking for administration needs

LBP = Subscriber locking for bad payment

LFU = Subscriber locking for fraudulent usage

LMD = Subscriber locking for deletion

UAN = Unblocking for Administrative use

UBP = Unblocking for bad payment

UFU = Unblocking for fraudulent usage

UMD = Unblocking for deletion

In networks where ODB is available, the MSBARR parameter cannot be used in

CHASBR.

HLR

7.6 Subscription modificationChanging a GSM subscriber into a UMTS subscriber (1)


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7.53

The subscriber type, either GSM or UMTS, is only known by the AuC.

To change the subscriber type from GSM into UMTS, you can apply threedifferent methods :

Method 1: a) delete the subscriber from the HLR (DELSBR), then from the AuC

(DELAUK),

b) create a new subscriber with new information, first in the AuC(CREAUK), then in the HLR (CRESBR)

or Method 2:

a) create a new MSIN in the AuC for this subscriber (CREAUK),

b) change the individual Bearer Service Profile (BS) of a subscriberinto a General Bearer Service Profile (GBS) using the CHASBRcommand

c) change the old MSIN in the HLR using the CHAMSI command(CHAMSI),

or Method 3:

a) b) as method 2

c) perform an automatic change of IMSI (CRELNK).



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CHASBR

NBSERV or NSNBSV = SN-BCN

New Subscriber Number (SN) and Bearer Capability Name (BCN)

SN = 4 to 14 digits depending on the numbering plan

ex : BCN = GBS30TCn(where n = profile number*)

NBSWOSN = BS

New basic service without subscriber number

ex : BS outgoing GBS30OC

ex : BS outgoing and incoming (may or may not be allowed depending onthe PLMN) GBS30TC

* Profile: assign subscribers a data profile for each bearer service, depending on thesubscribers service request :

Example: For BS2xTCn, BS3xTCn, GBS20TCn or GBS30TCn (where n = profilenumber), the associated profiles may be:

n = 1, for the 3.1 kHz audio mode,

n = 2, for the Unrestricted Digital Information (UDI) mode.



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To create a link between two MSIN, for automatic IMSI change function.

The first MSIN must exist in the HLR and the AUC.

The second MSIN must have been created in the AUC.

The response gives the first MSIN and its principal SN, together with thesecond MSIN and its date of creation.

CRELNK

PLMNID:PLMNIdentity MSIN: Mobile Subscriber Identification number

PLMNIDLK: PLMN Identity Link

MSINLK: Mobile Subscriber Identification number link

7 GSM and GPRS basic subscriptionsExercise


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Time allowed :

2 h

Exercise 1: (10 min)

Creating authentication data

Exercise 2: (1 h 00 min) Creating a GSM/UMTS model Exercise 3: (30 min)

Creating a subscriber from a model Exercise 4: (20 min)

Modifying a subscription

7 GSM and GPRS basic subscriptionsEvaluation


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Thank you for answering

the self-assessment

of the objectives sheet

Objectives :

To be able to describe and manage thebasic subscription for both Global Systemsfor Mobile communications (GSM) andUniversal Mobile Telecommunicationssystem (UMTS) networks.

To be able to describe the basic services(bearer services, teleservices) and GPRSservice, that network operators can offer tomobile subscribers in GSM and UMTSnetworks.

Documents

07-GSM and UMTS Basic Subscription