10 SGSN functions
3GPP43.013Discontinuous Reception (DRX) in the GSM systemRelease 17TS
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
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Change history |
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SMG No. |
TDoc. No. |
CR. No. |
Section affected |
New version |
Subject/Comments |
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SMG#07 |
4.0.4 |
ETSI Publication |
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SMG#17 |
5.0.0 |
Release 1996 version |
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SMG#27 |
6.0.0 |
Release 1997 version |
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SMG#29 |
7.0.0 |
Release 1998 version |
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SMG#31 |
8.0.0 |
Release 1999 version |
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Change history |
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Date |
TSG GERAN# |
TSG Doc. |
CR |
Rev |
Subject/Comment |
Old |
New |
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2001-04 |
4 |
Release 4 version |
4.0.0 |
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2002-06 |
10 |
Release 5 version |
4.0.0 |
5.0.0 |
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2005-01 |
23 |
Release 6 version |
5.0.0 |
6.0.0 |
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2007-08 |
35 |
Release 7 version |
6.0.0 |
7.0.0 |
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2008-12 |
40 |
Release 8 version |
7.0.0 |
8.0.0 |
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2009-12 |
44 |
Release 9 version |
8.0.0 |
9.0.0 |
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2011-03 |
49 |
Release 10 version |
9.0.0 |
10.0.0 |
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2012-09 |
55 |
Release 11 version |
10.0.0 |
11.0.0 |
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2014-09 |
63 |
Release 12 version (frozen at SP-65) |
11.0.0 |
12.0.0 |
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2015-11 |
68 |
GP-151190 |
0003 |
2 |
Introduction of EC-EGPRS and PEO |
12.0.0 |
13.0.0 |
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2017-03 |
75 |
Release 14 version (frozen at TSG-75) |
13.0.0 |
14.0.0 |
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Change history |
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Date |
Meeting |
TDoc |
CR |
Rev |
Cat |
Subject/Comment |
New version |
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2018-06 |
RP-80 |
Release 15 version (frozen at TSG-80) |
15.0.0 |
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2020-07 |
RP-88e |
– |
– |
– |
– |
Upgrade to Rel-16 version without technical change |
16.0.0 |
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2022-03 |
RP-95e |
– |
– |
– |
– |
Upgrade to Rel-17 version without technical change |
17.0.0 |