ETSI TR 149 995 V13.0.0 (2016-01)

ETSI TR 1149 995 V13.0.0 (201616-01)






TECHNICAL REPORT
Digital cellular telecocommunications system (Phahase 2+);
General Paackec t Radio Service (GPRS);
Interworking betweenn modifie m d Public Land Mobileile Network
(PLMN) supportingng GPRS and legacy GPRS momobiles
(3GPP TR 49.9.995 version 13.0.0 Release 13 13)

R
GLOBAL SYSTTEME FOR
MOBILE COMMUUNNICATIONS

---------------------- Page: 1 ----------------------
3GPP TR 49.995 version 13.0.0 Release 13 1 ETSI TR 149 995 V13.0.0 (2016-01)



Reference
RTR/TSGG-0149995vd00
Keywords
GSM
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the
print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2016.
All rights reserved.

TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3GPP TR 49.995 version 13.0.0 Release 13 2 ETSI TR 149 995 V13.0.0 (2016-01)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Technical Report (TR) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
http://webapp.etsi.org/key/queryform.asp.
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

---------------------- Page: 3 ----------------------
3GPP TR 49.995 version 13.0.0 Release 13 3 ETSI TR 149 995 V13.0.0 (2016-01)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 4
1 Scope . 5
2 References . 5
3 Abbreviations . 5
4 General . 5
5 Specific implementation on the radio interface . 6
5.1 MS behaviour during one phase contention resolution . 6
5.1.1 Justification . 6
5.1.2 Solution . 6
5.1.3 Implementation requirements . 6
5.1.4 Support of Legacy mobiles . 6
5.2 Roaming . 6
5.2.1 Justification . 6
5.2.2 Solution . 7
5.2.3 Implementation requirements . 7
5.2.4 Support of Legacy mobiles . 7
5.3 Early Classmark Sending on PBCCH cell . 7
5.3.1 Justification . 7
5.3.2 Solution . 7
5.3.3 Implementation requirements . 7
5.3.4 Support of Legacy mobiles . 8
5.4 Conditions for IOV reset . 8
5.4.1 Justification . 8
5.4.2 Solution . 8
5.4.3 Implementation requirements . 8
5.4.4 Support of Legacy mobiles . 8
5.5 Two-message packet downlink assignment on CCCH . 8
5.5.1 Justification . 8
5.5.2 Solution . 8
5.5.3 Implementation requirements . 9
5.5.4 Support of Legacy mobiles . 9
5.6 Negotiation of SNDCP compression entities . 9
5.6.1 Justification . 9
5.6.2 Solution . 9
5.6.3 Implementation requirements . 9
5.6.4 Support of Legacy mobiles . 9
Annex A: Change history . 11
History . 12

ETSI

---------------------- Page: 4 ----------------------
3GPP TR 49.995 version 13.0.0 Release 13 4 ETSI TR 149 995 V13.0.0 (2016-01)
Foreword
rd
This Technical Specification has been produced by the 3 Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.
ETSI

---------------------- Page: 5 ----------------------
3GPP TR 49.995 version 13.0.0 Release 13 5 ETSI TR 149 995 V13.0.0 (2016-01)
1 Scope
This report describes issues relating to the GPRS specifications, which lead to the specifications being modified after
the placement of GPRS compliant mobiles into the market place.
Where possible the present report clarifies any recommended measures which may be adopted by the GPRS
infrastructure to enable interworking to be obtained between the GPRS infrastructure and legacy Mobile Station (MS)
implementations of the GPRS specifications.
For each issue this report also defines the time after which all new GPRS mobiles are required to meet the modified
specifications.
The lifetime of the herein described measures together with their potential impact on optimal network performance is
out of the scope of the present document.
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including
a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same
Release as the present document.
[1] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".
3 Abbreviations
Abbreviations used in the present document are listed in 3GPP TR 21.905 [1].
4 General
In the implementation of the GPRS standard it has been found that some aspects of GPRS have not been fully covered
and as a result late changes have been made to the specifications.
This has lead to the situation where existing GPRS mobiles (i.e. those already in the field) no longer aligned with the
latest version of the specifications. These "legacy" mobiles will not be modified; however, where possible the present
report clarifies any recommended measures which may be adopted by the GPRS infrastructure to enable interworking to
be obtained between the GPRS infrastructure and these legacy Mobile Station (MS).
In addition and to ensure sufficient time for implementation and testing of modified GPRS implementation (MS and
network) this TR specifies the point in time at which the specification modification come into force. After this point in
time all new GPRS mobiles will be required to support the modified specification and all GPRS networks will be
expected to handle the new mob
...