8 The subscriber information stored in the GLR

23.1193GPPGateway Location Register (GLR)Release 17Stage 2TS

The subscriber information stored in the GLR can be categorised in the following types.

8.1 Information for HLR emulation

The GLR retrieves this kind of subscriber information mainly from Insert Subscriber Data message received from the HLR and stores it. Then this message is transported to the VLR transparently.

This type of information is for example:

– IMSI.

– International MS ISDN number.

– PDP Type.

8.2 Information for address and identity conversion

On location updating the VLR or SGSN sends Update Location message to the GLR and notifies its VLR number and MSC number or SGSN number and SGSN address by the message. On the first updating in the newly visited network, the GLR relays Update Location message to the HLR setting.

– The GLR number as the VLR number(E.164 address).

– The IM_MSC number as the MSC number(E.164 address).

– The GLR number as the SGSN number(E.164 address).

– The IM-GSN address as the SGSN address(IP address).

The GLR keeps the association of these numbers and addresses and updates it on the second and further updating. And when the GLR receives and stores the HLR number in Update Location ack message form the HLR, it relays the message to the VLR setting.

– The GLR number as the HLR number (E. 164 address).

– Identity Conversion.

On location updating the VLR creates and allocates the LMSI number (denote LMSIv) for the user and sends it to the GLR in Update Location message. When the GLR receives the message, it creates and allocates another LMSI number (denote LMSIg) and associates LMSIg with received LMSIv. The GLR notifies LMSIg to the HLR sending Update Location message. This method can speed up the search for subscriber data in the GLR when the GLR receives some message from the HLR.

8.3 Information for Location updating Screening

This information is used for the GLR to judge whether requested location updating is necessary to be indicated to HLR or not. Following are information categorized in this type.

MNRF, MNRG.

– CCBS Monitoring Flag.

– MSC area restricted flag.

– SGSN area restricted flag.

– Location and Subscriber information Confirmed by HLR indicator (LSIC).

Clause 7.7 shows the procedure for SMS alerting in the network with the GLR. In the procedure Mobile station Not Reachable Flag (MNRF) and Mobile station Not Reachable for GPRS (MNRG) are needed.

The CCBS Monitoring Flag is set when the user in the GLR area is CCBS monitored by the VLR. As one option, while it is set, the Update Location message is relayed to the HLR to inform the appropriate CCBS process in the HLR. More detailed procedures for the CCBS are included in clause 7.10.

MSC area restricted flag and SGSN area restricted flag are needed for regional restriction service. See clause 7.5 for more detailed procedures.

LSIC is used for restart procedures. clause 7.6.3 includes more detailed description for the usage of this indicator.

8.4 Information for support of Super-Charger functionality

This information is used for the GLR to behave as the HLR supporting the Super-Charger functionality towards the serving node (i.e. VLR or SGSN) which also supports Super-Charger functionality. Following is information categorised in this type.

– Age indicator for CS.

– Age indicator for PS.

8.5 Other Information

The GLR has Service Substitution Induced Flag list. This information show which service is replaced by service substitution. See clause 7.2.1.3 for more detail on the handling of unsupported services.

8.6 IMSI Record in the GLR

Table 8.5/1: Subscriber Information stored in the GLR

PARAMETER

PRESENCE

CATEGORY (*1)

NOTE

IMSI

M

A

Network Access Mode

C

A

International MS ISDN number

M

A

LMSI allocated by VLR

C

B

LMSI allocated by GLR

C

B

Mobile Station Category

M

A

LMU Identifier

C

A

VLR number

M

B

MSC number

M

B

HLR number

C

B

Zone Code List

C

A

Roaming restriction due to unsupported feature

C

A

MSC area restricted flag

M

C

LSA Identity

C

A

LSA Priority

C

A

LSA Only Access Indicator

C

A

LSA Active Mode Indicator

C

A

Provision of bearer service

M

A

Provision of teleservice

M

A

BC allocation

C

A

Subscriber status

C

A

Barring of outgoing calls

C

A

Barring of premium rate calls

C

A

Barring of supplementary service management

C

A

Barring of invocation of call transfer

C

A

Mobile Station Not Reachable Flag

M

C

VGCS Group Membership List

C

A

VBS Group Membership List

C

A

Broadcast Call Initiation Allowed List

C

A

Originating CAMEL Subscription Information

C

A

SS invocation notification (SS-CSI)

C

A

CCBS Monitoring Flag

C

C

Location and Subscriber information Confirmed by HLR indicator

M

C

CAMEL Supported phases information

C

C

Service Substitution Induced Flag list

C

E

Forwarding information List

C

A

Call barring information List

C

A

CUG information List

C

A

SS-Data List

C

A

EMLPP Subscription

C

A

North American Equal Access preferred Carrier Id List

C

A

Privacy Exception List

C

A

Home GMLC Numbers

C

A

IST Alert Timer

C

A

Age indicator for CS

C

D

Packet Specific Data

SGSN number

M

B

Roaming Restriction in the SGSN due to unsupported feature

M

A

SGSN area restricted flag

M

C

MNRG

M

C

PDP Type

C

A

PDP Address

C

A

SGSN address

M

B

Access Point Name

C

A

VPLMN Address Allowed

C

A

Quality of Service Subscribed

C

A

Age indicator for PS

C

D

(*1) A: Information for HLR emulation.

B: Information for address and identity conversion.

C: Information for Location updating Screening.

D: Information for support of Super-Charger functionality.

E: Others.

Annex A (informative):
Change history

Change history

Date

Meeting

TDoc

CR

Rev

Cat

Subject/Comment

New version

08-1999

The first draft.

0.1.0

09-1999

Addition of clause 7.10 and some editorial corrections.

0.2.0

10-1999

Addition of clause 7.5.2, modification of clause 7.2.1.3 and clause 7.2.2, and, some editorial corrections.

0.3.0

11-1999

Moved, modified and merged Purge MS descriptions from clause 7.3.1.3 and 7.3.3 to clause 7.4. Deleted clause 7.10 Location Service and remove LCS related data from table 8.5/1. Corrected some editing errors.

0.4.0

11-1999

Modified clause 2 References. Deleted one sentence from clause 4. Corrected minor editing errors in clause 5.3 and clause 8.5. Restored clause 7.11 Location Services and LCS related data to table 8.5/1.

0.5.0

02-2000

Agreed by CN2B, Milan

1.0.0

03-2000

Submitted for approval to TSG CN#07

2.0.0

03-2000

Approved by CN#07

3.0.0

03-2001

Release 4 after CN#11

4.0.0

06-2002

Release 5 after CN#16

5.0.0

12-2004

Release 6 after CN#26

6.0.0

06-2007

Upgraded unchanged from Rel-6 after CT#36

7.0.0

12-2008

Upgraded unchanged from Rel-7 after CT#42

8.0.0

12-2009

Update to Rel-9 version (MCC)

9.0.0

03-2011

Update to Rel-10 version (MCC)

10.0.0

09-2012

Update to Rel-11 version (MCC)

11.0.0

09-2014

Update to Rel-12 version (MCC)

12.0.0

12-2015

Update to Rel-13 version (MCC)

13.0.0

03-2017

Update to Rel-14 version (MCC)

14.0.0

06-2018

Update to Rel-15 version (MCC)

15.0.0

07-2020

Update to Rel-16 version (MCC)

16.0.0

2022-03

CT#95-

–

–

–

–

Update to Rel-17 version (MCC)

17.0.0