1、 ETSI TR 125 929 V14.0.0 (2017-04) Universal Mobile Telecommunications System (UMTS); Continuous connectivity for packet data users; 1.28 Mcps TDD (3GPP TR 25.929 version 14.0.0 Release 14) TECHNICAL REPORT ETSI ETSI TR 125 929 V14.0.0 (2017-04)13GPP TR 25.929 version 14.0.0 Release 14Reference RTR/
2、TSGR-0125929ve00 Keywords UMTS 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 notice The present docu
3、ment 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 ca
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7、fied without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit
8、of its Members. 3GPPTM 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 ETSI TR 125 929 V14.0.0 (2017-04)23GPP TR 25.929 version 14.0.0 Release 14I
9、ntellectual 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
10、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
11、, 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
12、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, UM
13、TS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “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 (Verb
14、al forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 125 929 V14.0.0 (2017-04)33GPP TR 25.929 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g
15、3Foreword . 4g3Introduction 4g31 Scope 5g32 References 5g33 Definitions, symbols and abbreviations . 6g33.1 Definitions 6g33.2 Symbols 6g33.3 Abbreviations . 6g34 Technical concepts . 6g34.0 General . 6g34.1 Semi-persistent scheduling in uplink 7g34.1.1 Description of the concept 7g34.1.2 Analysis o
16、f the concept . 7g34.1.3 Agreements . 7g34.1.4 Open issues of the concept 7g34.2 Semi-persistent scheduling in downlink . 7g34.2.1 Description of the concept 7g34.2.2 Analysis of the concept . 7g34.2.3 Agreements . 8g34.3 Uplink transmission simulation 8g34.3.1 Analysis of the scheme . 8g34.3.2 Simu
17、lation result . 8g34.3.3 Agreements . 10g34.4 Explicit state switch mechanism 11g34.4.1 Analysis of the scheme . 11g34.4.2 Agreements . 12g35 Technical solution 13g35.1 Overview of the selected solution 13g35.2 Impact on RAN1 specifications 13g35.3 Impact on RAN2 specifications 13g35.4 Impact on RAN
18、3 specifications 13g35.5 Impact on RAN4 specifications 13g3Annex A: Change history 14g3History 15g3ETSI ETSI TR 125 929 V14.0.0 (2017-04)43GPP TR 25.929 version 14.0.0 Release 14Foreword This Technical Report has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the pres
19、ent 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.
20、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 digi
21、t is incremented when editorial only changes have been incorporated in the document. Introduction Packet-oriented features like HSDPA and E-DCH in UMTS systems will promote the subscribers desire for continuous connectivity, where the user stays connected over a long time span with only occasional a
22、ctive periods of data transmission, and avoiding frequent connection termination and re-establishment with its inherent overhead and delay. This is the perceived mode a subscriber is used to in fixed broadband networks (e.g. DSL) and a precondition to attract users from fixed broadband networks. For
23、 a high number of users in the cell it can be assumed that many users are not transmitting any user data for some time (e.g. for reading during web browsing or in between packets for periodic packet transmission such as VoIP).The corresponding overhead control channels and dedicated channels will si
24、gnificantly limit the number of users that can be efficiently supported. As completely releasing dedicated channels during periods of temporary traffic inactivity would cause considerable delays for reestablishing data transmission and a corresponding bad user perception, this WI is intended to redu
25、ce the impact of control channels while maintaining the DCH state and allowing a much faster reactivation for temporarily inactive users. ETSI ETSI TR 125 929 V14.0.0 (2017-04)53GPP TR 25.929 version 14.0.0 Release 141 Scope The present document summarizes the work done under the WI “Continuous Conn
26、ectivity for Packet Data Users for 1.28Mcps TDD“ defined in 1 by listing technical concepts addressing the objectives of the work item (see below), analysing these technical concepts and selecting the best solution (which might be a combination of technical concepts). The objective of this work item
27、 is to reduce the code consumption (e.g. overhead of physical control channels or related signaling messages) of packet data users for both real-time (e.g. VoIP) and non real-time services, e.g. for users which have temporarily no data transmission in either uplink or downlink. Packet data users as
28、considered in this work item are using only HS-DSCH/E-DCH channels without UL DPCH and DL DPCH. The aim is to increase the number of packet data users in the UMTS 1.28Mcps TDD system that can be kept efficiently in CELL_DCH state over a longer time period and that can restart transmission after a pe
29、riod of temporary inactivity with a much shorter delay (for example, 100ms) than would be necessary for reestablishment of a new connection. Another aim is to reduce UE power consumption in CELL_DCH state over a long period by DTX and DRX. The present document provides the base for the following pre
30、paration of change requests to the corresponding RAN specifications. 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, vers
31、ion 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
32、that document in the same Release as the present document. 1 3GPP Tdoc RP- 080085: “ New Work item Proposal: Continuous Connectivity for packet data users for 1.28Mcps TDD “, TSG RAN #39, Puerto Vallarta, Mexico, 04 - 07 March 2008. 2 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 3 3GPP TS 2
33、5.221: “Physical channels and mapping of transport channels onto physical channels (TDD)“. 4 3GPP TS 25.222: “Multiplexing and channel coding (TDD)“. 5 3GPP TS 25.223: “Spreading and modulation (TDD)“. 6 3GPP TS 25.224: “Physical layer procedures (TDD)“. 7 3GPP TS 25.225: “Physical layer Measurement
34、s (TDD)“. 8 3GPP TS 25.306: “UE Radio Access Capabilities“. 9 3GPP TS 25.308: “UTRA High Speed Downlink Packet Access (HSDPA); Overall description; Stage 2“. 10 3GPP TS 25.319: “Enhanced uplink; Overall description; Stage 2“. 11 3GPP TS 25.321: “Medium Access Control (MAC) protocol specification“. 1
35、2 3GPP TS 25.331: “Radio Resource Control (RRC) Protocol Specification“. 13 3GPP TS 25.433: “UTRAN Iub Interface NBAP Signalling“. ETSI ETSI TR 125 929 V14.0.0 (2017-04)63GPP TR 25.929 version 14.0.0 Release 143 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present d
36、ocument, the following terms and definitions given in . and the following apply. example: text used to clarify abstract rules by applying them literally. 3.2 Symbols For the purposes of the present document, the following symbols apply: (void) 3.3 Abbreviations For the purposes of the present docume
37、nt, the following abbreviations apply: ACK Acknowledgement CQI Channel Quality Indicator CRC Cyclic Redundancy Check DCH Dedicated Channel DL Downlink DPCH Dedicated Physical Channel DTX Discontinuous Transmission E-DCH Enhanced Dedicated Channel E-AGCH E-DCH Absolute Grant Channel E-HICH E-DCH HARQ
38、 Acknowledgement Indicator Channel HSDPA High Speed Downlink Packet Access HS-DSCH High Speed Downlink Shared Channel HS-PDSCH High Speed Physical Downlink Shared Channel HS-SCCH High Speed Physical Downlink Shared Control Channel NACK Negative Acknowledgement P-CCPCH Primary Common Control Physical
39、 Channel RL Radio LinkS-CCPCH Secondary Common Control Physical Channel SIR Signal-to-Interference Ratio TPC Transmit Power Control TTI Transmission Time Interval UE User Equipment UL Uplink UTRAN UMTS Terrestrial Radio Access Network 4 Technical concepts 4.0 General This clause describes and analys
40、es the suggested technical concepts addressing the problem described by the work item “Continuous Connectivity for Packet Data Users“ defined in 1. ETSI ETSI TR 125 929 V14.0.0 (2017-04)73GPP TR 25.929 version 14.0.0 Release 144.1 Semi-persistent scheduling in uplink 4.1.1 Description of the concept
41、 In TD-SCDMA HSPA plus system, CPC technique serves as a solution to data transmission for UE in CELL_DCH state, and the data transmission characteristic for such as real-time (e.g. VoIP) service would be periodicly and strictly delay sensitive. For uplink transmission, E-AGCH adds a significant ove
42、rhead to each E-DCH transmission. Although this overhead is relatively small for transmission of large packets of data, such as in the presence of full-buffer type of traffic, it is considerable for IMS real-time services such as VoIP. This concept alleviates this overhead by allowing UTRAN to alloc
43、ate a kind of semi-persistent or long term resource and NodeB can adjust this resource during the transmission. When UE transmits new data using this resources it should wait for the feedback from NodeB by detection corresponding E-HICH , i.e. E-HICH for non-schedule E-DCH shall be used in case of s
44、emi-persistent/long term resource assignment. 4.1.2 Analysis of the concept By this semi-persistent scheduling method, the control channel overhead could be reduced and the VoIP capacity could be increased. The E-AGCH channels are freed up to be used for other services and UEs. 4.1.3 Agreements - Lo
45、ng term resource assignment shall be introduced in Uplink, and the assignment can be adjusted by NodeB dynamically. - E-HICH for non-schedule E-DCH shall be used in case of long term resource assignment. - Node B can re-assign the UEs semi-persistent resource when the UE transfers from the VoIP acti
46、ve period to the VoIP silence period. 4.1.4 Open issues of the concept - The mapping relation between semi-persistent or long term assignment E-PUCH and E-HICH. - Semi-persistent resource assignment procedure and frame structure design. - Authorization trigger event design and authorization algorith
47、m, NodeB data receiving information (for instance, SIR measurement or effective traffic statistics, etc) and the cells Rot information. 4.2 Semi-persistent scheduling in downlink 4.2.1 Description of the concept In TD-SCDMA HSPA plus system, CPC technique serves as a solution to data transmission fo
48、r UE in CELL_DCH state, and the data transmission characteristic for such as real-time (e.g. VoIP) service would be periodicly and strictly delay sensitive. For downlink tranmission, HS-SCCH adds a significant overhead to each HS-DSCH transmission. Although this overhead is relatively small for tran
49、smission of large packets of data, such as in the presence of full-buffer type of traffic, it is considerable for IMS real-time services such as VoIP. This concept alleviates this overhead by allowing UTRAN to allocate a kind of semi-persistent or long term resource. When the semi-persistent HS-DSCH resources are configured for a UE, the first HS-DSCH transmission is performed without the accompanying HS-SCCH. And HARQ retransmissions of the first HS-DSCH transmission are accompanied by a new format HS-SCCH. 4.2.2 Analysis of the concept
