1、 ETSI TS 102 355 V8.4.0 (2005-01)Technical Specification Digital cellular telecommunications system (Phase 2+);Dual Transfer Mode (DTM);Stage 2(3GPP TS 03.55 version 8.4.0 Release 1999)GLOBAL SYSTEM FOR MOBILE COMMUNICATIONSRETSI ETSI TS 102 355 V8.4.0 (2005-01) 1 3GPP TS 03.55 version 8.4.0 Release
2、 1999 Reference RTS/TSGG-010355v840 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 but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notic
3、e Individual copies of the present document can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable
4、Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the 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
5、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: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be
6、reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2005. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its
7、Members. TIPHONTMand the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI TS 102 355 V8.4.0 (2005-01) 2 3GPP TS 03.55 version 8.4.
8、0 Release 1999 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: “Intell
9、ectual 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 (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investi
10、gation, 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 Specific
11、ation (TS) 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
12、. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp . ETSI ETSI TS 102 355 V8.4.0 (2005-01) 3 3GPP TS 03.55 version 8.4.0 Release 1999 Contents Intellectual Property Rights2 Foreword.2 Foreword.5 Introduction 5 Motivation.5 Con
13、cept basis 5 Class A mode of operation 6 1 Scope 7 2 References 7 3 Definitions and abbreviations.8 3.1 Definitions8 3.2 Abbreviations .8 4 Class A capabilities 8 4.1 Main DCCH with SAPI=0 .8 4.1.1 General8 4.1.2 MS-SGSN tunnelling9 4.2 Single slot operation.9 4.2.1 General9 4.2.2 TCH/H + PDCH/H .10
14、 4.3 Multislot operation .10 4.3.1 General10 4.3.2 Shared PDCH10 4.3.3 Exclusive use of PDCH/H 10 4.4 Bearer capability.10 4.5 Indication of the DTM capabilities supported by the MS 11 4.5.1 Definition of MS DTM classes.11 4.5.2 Options11 4.6 Indication of the capabilities 12 4.7 Compatibility issue
15、s .12 5 Layer 112 5.1 Timing advance 12 5.2 Measurement reporting.12 5.3 Power control in multislot operation 13 5.3.1 General13 5.3.2 Uplink multislot power control.13 5.3.3 Downlink multislot power control13 6 Signalling procedures.13 6.1 Establishment .13 6.1.1 General13 6.1.2 PS establishment wh
16、ile in dedicated mode.14 6.1.2.1 Principles.14 6.1.2.2 MO session: packet request procedure14 6.1.2.3 MT session 16 6.1.2.3.1 Ready state: packet downlink assignment .16 6.1.2.3.2 Standby state: packet notification16 6.1.3 CS establishment while in packet transfer mode 17 6.1.4 PS establishment whil
17、e in dual transfer mode 19 6.2 Release .19 6.2.1 Release of packet resources 19 6.2.2 Release of CS resources19 6.3 Handover 19 ETSI ETSI TS 102 355 V8.4.0 (2005-01) 4 3GPP TS 03.55 version 8.4.0 Release 1999 6.3.1 General19 6.3.2 Internal handover 20 6.3.3 External handover.21 6.4 Location manageme
18、nt 22 6.4.1 General22 6.4.2 Cell update22 6.4.3 Routeing Area update .23 6.4.4 Location update 24 6.4.4.1 Change of Location Area in dedicated mode 24 6.4.4.2 Simultaneous Location Area and Routeing Area update procedures 25 6.5 Provision of the IMSI to the BSC.26 6.5.1 General26 6.5.2 Call establis
19、hment.26 6.5.3 Session establishment .26 6.5.3.1 Downlink session establishment .26 6.5.3.2 Uplink session establishment 27 6.5.4 External handover.27 6.6 In-band parameters.27 6.7 MS behaviour in heterogeneous networks .28 6.7.1 General28 6.7.1 Suspension procedure .29 6.7.2 Resume procedure.29 7 D
20、TM operation.30 8 GPRS attach procedure while in dedicated mode and packet idle mode .30 9 Security.30 10 Header and Data Compression.30 Annex A (informative): Possible improvements for future releases 31 Annex B (informative): Change history .32 History 33 ETSI ETSI TS 102 355 V8.4.0 (2005-01) 5 3G
21、PP TS 03.55 version 8.4.0 Release 1999 Foreword This Technical Specification has been produced by the 3rdGeneration 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 c
22、ontents 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
23、 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. Introduction Motivation The definition of GPRS
24、class A mode of operation in Release 97 assumes a total independence between the CS and PS domains. Thus the direct implementation of the existent standards for class A would result in mobile stations that are required to operate in two different frequencies either in the same timeslot, in timeslots
25、 n and n + 3 or their adjacent ones. This complicates enormously the internal architecture of the ME, resulting in a very high development cost, which both operators and manufacturers would prefer to avoid. Nevertheless, operators have expressed their need for this type of mobiles, since they want t
26、o offer services that demand the simultaneous existence of a CS connection and a PS session. This is particularly important during the coexistence of GSM/GPRS with UMTS, as these capabilities will exist in UMTS. However, UMTS coverage may not be available in some areas where there is GSM/GPRS covera
27、ge (e.g. deep inside buildings or when roaming to a 2G network). As coverage is a vital service, in order for an operator to be able to sell “UMTS class A services“ it is necessary to be able to imitate class A services in areas of only GSM coverage. On the other hand, the provision of class A servi
28、ces with GERAN technology is also essential for operators without UMTS coverage. Concept basis A constant aim throughout this document is to reuse the existing functionality when possible, in order to minimise the impact on current implementations. In general, the changes proposed have little impact
29、 on the core network elements (i.e. MSC and SGSN) and 3G TS 24.008 11. The solution outlined in this document overcomes the restrictions mentioned above and makes possible to have simultaneous CS and PS active connections. This is achieved by sending PS data (signalling and user data) on the timeslo
30、t use by the CS connection on timeslot(s) not used by the CS connection ETSI ETSI TS 102 355 V8.4.0 (2005-01) 6 3GPP TS 03.55 version 8.4.0 Release 1999 The possible timeslot configurations are based on two restrictions in Release 99: the number of timeslots allocated to the CS connection is limited
31、 to one; the timeslots allocated in each direction are contiguous. More flexible proposals are left for further study. In addition, for the definition of DTM multislot classes, the restrictions in 3G TS 05.02 6 for multislot capabilities shall apply. Figure 1 shows an example of a multislot configur
32、ation (2 uplink, 3 downlink). 0 1 2 3 4 5 6 7RxTxf1f20 1 2 3 4 5 6 7 0 1 20123 4 5 6 7 0 1 2 3 4 5 6 7567CS PS MeasurementsFigure 1: Example of multislot configuration of a GPRS simple class A mobile station in dual transfer mode. In a similar manner to UMTS, the A interface is modified so that the
33、BSC knows the IMSI associated with each SCCP connection to the MSC. This means that the BSC is able to ensure that packet paging messages can be delivered to mobile stations which have a connection to the MSC. The same functionality can be reused to deliver MSC originated pages to mobiles in packet
34、transfer mode while the network is in mode of operation II (i.e. no Gs interface). Mobility management is basically the same as is specified in 3G TS 23.060 9 for class A mobiles, but using the same techniques as UMTS for control of “in connection“ cell, routeing area and location area updates (e.g.
35、 System Information 6 message is extended to contain the Routing Area Code). If GPRS signalling needs to be sent during a standalone voice call, then it is proposed that these LLC frames can be sent on the main DCCH (FACCH or SDCCH) with layer 2 SAPI 0. This uses a new Protocol Discriminator in 3G T
36、S 24.007 for LLC: GTTP (GPRS Transparent Transport Protocol). The use of the main DCCH for GPRS signalling is subject to certain restrictions to reduce the harm to the speech quality. Inter-BSC handover is planned to be controlled by A interface signalling. The Old BSS to New BSS information element
37、 is used to indicate to the target BSC that the mobile station is in DTM. Class A mode of operation For paging, the behaviour of the mobile station is as in class B mode of operation: the PCH takes priority to PPCH, and both to CBCH. The implementation described in this document also applies the res
38、triction that the mobile station shall not be required to operate in two different frequencies in the same moment in time. However, GSM CS and GSM GPRS services will be still supported simultaneously. Thus, the feature here described is a subset of the GPRS class A capabilities. The mentioned subset
39、 will be referred as DTM. The specification of an unrestricted class A mode of operation that requires the mobile station to operate in different frequencies simultaneously shall not be forbidden. ETSI ETSI TS 102 355 V8.4.0 (2005-01) 7 3GPP TS 03.55 version 8.4.0 Release 1999 1 Scope The present do
40、cument is a description of the practical implementation of GSM-GPRS class A mobiles and a basis for discussion on the changes and additions to the current specifications. This work is part of the Release 99 Work Item “BSS co-ordination of Radio Resource allocation for class A GPRS services - GSM Rad
41、io Access (R99)“ for which M Mouly of Nortel Networks is rapporteur. This work item was supported by Nortel, Motorola, Vodafone and Lucent. In the following, GPRS refers to both EGPRS and GPRS unless explicitly stated otherwise. 2 References The following documents contain provisions which, through
42、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 versi
43、on applies. 1 3G TS 01.04: “Abbreviations and acronyms“. 2 3G TS 02.60: “General Packet Radio Service (GPRS); Service description; Stage 1“. 3 3G TS 04.13: “Performance requirements on the mobile radio interface“. 4 3G TS 04.18: “Mobile radio interface layer 3 specification, Radio Resource Control P
44、rotocol“. 5 3G TS 04.60: “General Packet Radio Service (GPRS); Mobile Station (MS) - Base Station System (BSS) interface; Radio Link Control/ Medium Access Control (RLC/MAC) protocol“. 6 3G TS 05.02: “Multiplexing and multiple access on the radio path“. 7 3G TS 05.08: “Radio subsystem link control“.
45、 8 3G TS 05.10: “Radio subsystem synchronization“. 9 3G TS 23.060: “3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; General Packet Radio Service (GPRS); Service description; Stage 2“. 10 3G TS 23.121: “3rd Generation Partnership Project; Technical Speci
46、fication Group Services and Systems Aspects; Architectural Requirements for Release 1999“. 11 3G TS 24.007: “3rd Generation Partnership Project; Technical Specification Group Core Network; Mobile radio interface signalling layer 3; General aspects“. 12 3G TS 24.008: “3rd Generation Partnership Proje
47、ct; Universal Mobile Telecommunications System; Mobile radio interface layer 3 specification, Core Network Protocols - Stage 3“. ETSI ETSI TS 102 355 V8.4.0 (2005-01) 8 3GPP TS 03.55 version 8.4.0 Release 1999 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document,
48、the following terms and definitions apply: Dual transfer mode: It is only applicable for a mobile station that supports GPRS. A mobile station in dual transfer mode has resources for an RR connection and is simultaneously1allocated resources for a TBF, provided that the BSS co-ordinates its allocati
49、on of radio resources. DTM is optional both for the mobile station and the network. A DTM mobile is a class A mobile. Hence all specifications/requirements for class A apply to this mobile unless specifically altered by the present document. The procedures specified for dedicated and packet transfer modes apply to a mobile station in dual transfer mode unless specifically altered by the present document. Class A/class B: In the present document “class A“ and “class B“ is used as a short form of “class A mode of operation“ and “class
