10 SGSN functions

3GPP43.013Discontinuous Reception (DRX) in the GSM systemRelease 16TS

The SGSN maintains knowledge of the cells that are to be paged, and when the paging group occurs in the respective cell(s), in order to locate a particular MS for packet data delivery. In addition, when eDRX is used the SGSN maintains the value of the eDRX value it has negotiated with the MS. The SGSN constructs paging requests and sends them to a specific set of BSSs. Each page request always includes the IMSI. If a MS uses eDRX then the page request also includes the negotiated eDRX value. If EC-EGPRS is used, the downlink coverage class applicable to the MS is also included in the page request.

Annex A (informative):
Change History

Change history

SMG No.

TDoc. No.

CR. No.

Section affected

New version

Subject/Comments

SMG#07

4.0.4

ETSI Publication

SMG#17

5.0.0

Release 1996 version

SMG#27

6.0.0

Release 1997 version

SMG#29

7.0.0

Release 1998 version

SMG#31

8.0.0

Release 1999 version

Change history

Date

TSG GERAN#

TSG Doc.

CR

Rev

Subject/Comment

Old

New

2001-04

4

Release 4 version

4.0.0

2002-06

10

Release 5 version

4.0.0

5.0.0

2005-01

23

Release 6 version

5.0.0

6.0.0

2007-08

35

Release 7 version

6.0.0

7.0.0

2008-12

40

Release 8 version

7.0.0

8.0.0

2009-12

44

Release 9 version

8.0.0

9.0.0

2011-03

49

Release 10 version

9.0.0

10.0.0

2012-09

55

Release 11 version

10.0.0

11.0.0

2014-09

63

Release 12 version (frozen at SP-65)

11.0.0

12.0.0

2015-11

68

GP-151190

0003

2

Introduction of EC-EGPRS and PEO

12.0.0

13.0.0

2017-03

75

Release 14 version (frozen at TSG-75)

13.0.0

14.0.0

Change history

Date

Meeting

TDoc

CR

Rev

Cat

Subject/Comment

New version

2018-06

RP-80

Release 15 version (frozen at TSG-80)

15.0.0

2020-07

RP-88e

Upgrade to Rel-16 version without technical change

16.0.0