ETSI TR 125 929-2018 Universal Mobile Telecommunications System (UMTS) Continuous connectivity for packet data users 1 28 Mcps TDD (V15 0 0 3GPP TR 25 929 version 15 0 0 Release 15.pdf

1、 ETSI TR 125 929 V15.0.0 (2018-07) Universal Mobile Telecommunications System (UMTS); Continuous connectivity for packet data users; 1.28 Mcps TDD (3GPP TR 25.929 version 15.0.0 Release 15) TECHNICAL REPORT ETSI ETSI TR 125 929 V15.0.0 (2018-07)13GPP TR 25.929 version 15.0.0 Release 15Reference RTR/

2、TSGR-0625929vf00 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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8、ks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members. GSMand the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI TR 125 929 V15.0.0 (2018-07)23GPP TR 25.929 version 15.0.0

9、Release 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables 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 0

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13、the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Report (TR) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications

14、 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

15、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 (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverable

16、s except when used in direct citation. ETSI ETSI TR 125 929 V15.0.0 (2018-07)33GPP TR 25.929 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g3Introduction 4g31 Scope 5g32 References 5g33 Definitions, symbols and abbreviations .

17、6g33.1 Definitions 6g33.2 Symbols 6g33.3 Abbreviations . 6g34 Technical concepts . 6g34.0 General . 6g34.1 Semi-persistent scheduling in uplink 6g34.1.1 Description of the concept 6g34.1.2 Analysis of the concept . 7g34.1.3 Agreements . 7g34.1.4 Open issues of the concept 7g34.2 Semi-persistent sche

18、duling in downlink . 7g34.2.1 Description of the concept 7g34.2.2 Analysis of the concept . 7g34.2.3 Agreements . 7g34.3 Uplink transmission simulation 8g34.3.1 Analysis of the scheme . 8g34.3.2 Simulation result . 8g34.3.3 Agreements . 10g34.4 Explicit state switch mechanism 10g34.4.1 Analysis of t

19、he scheme . 10g34.4.2 Agreements . 11g35 Technical solution 12g35.1 Overview of the selected solution 12g35.2 Impact on RAN1 specifications 12g35.3 Impact on RAN2 specifications 12g35.4 Impact on RAN3 specifications 12g35.5 Impact on RAN4 specifications 12g3Annex A: Change history 13g3History 14g3ET

20、SI ETSI TR 125 929 V15.0.0 (2018-07)43GPP TR 25.929 version 15.0.0 Release 15Foreword This Technical Report 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 approv

21、al. 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

22、 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. Introduction Pac

23、ket-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 active periods of data transmission, and avoiding frequent connection termination and re-establishment

24、 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 a high number of users in the cell it can be assumed that many users are not transmitting any user d

25、ata 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 significantly limit the number of users that can be efficiently supported. As completely releasing dedi

26、cated 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 reduce the impact of control channels while maintaining the DCH state and allowing a much faster reactiva

27、tion for temporarily inactive users. ETSI ETSI TR 125 929 V15.0.0 (2018-07)53GPP TR 25.929 version 15.0.0 Release 151 Scope The present document summarizes the work done under the WI “Continuous Connectivity for Packet Data Users for 1.28Mcps TDD“ defined in 1 by listing technical concepts addressin

28、g 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 is to reduce the code consumption (e.g. overhead of physical control channels or related signaling m

29、essages) 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 considered in this work item are using only HS-DSCH/E-DCH channels without UL DPCH and DL DPCH. The a

30、im 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 period of temporary inactivity with a much shorter delay (for example, 100ms) than would be necessary f

31、or 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 preparation of change requests to the corresponding RAN specifications. 2 References The following docum

32、ents 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. - F

33、or 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 Tdoc RP- 080085: “ New Work item Pr

34、oposal: 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 25.221: “Physical channels and mapping of transport channels onto physical channels (TDD)“. 4 3GPP TS

35、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 Measurements (TDD)“. 8 3GPP TS 25.306: “UE Radio Access Capabilities“. 9 3GPP TS 25.308: “UTRA High Speed Downli

36、nk 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“. 12 3GPP TS 25.331: “Radio Resource Control (RRC) Protocol Specification“. 13 3GPP TS 25.433: “UTRAN Iu

37、b Interface NBAP Signalling“. ETSI ETSI TR 125 929 V15.0.0 (2018-07)63GPP TR 25.929 version 15.0.0 Release 153 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions given in . and the following apply. example: text used t

38、o 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 document, the following abbreviations apply: ACK Acknowledgement CQI Channel Quality Indicator CRC Cyclic R

39、edundancy 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 Acknowledgement Indicator Channel HSDPA High Speed Downlink Packet Access HS-DSCH High Speed Downlin

40、k 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 Channel RL Radio LinkS-CCPCH Secondary Common Control Physical Channel SIR Signal-to-Interference Ra

41、tio 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 analyses the suggested technical concepts addressing the problem described by the work item “Continuous Con

42、nectivity for Packet Data Users“ defined in 1. 4.1 Semi-persistent scheduling in uplink 4.1.1 Description of the concept 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

43、. VoIP) service would be periodicly and strictly delay sensitive. For uplink transmission, E-AGCH adds a significant overhead to each E-DCH transmission. Although ETSI ETSI TR 125 929 V15.0.0 (2018-07)73GPP TR 25.929 version 15.0.0 Release 15this overhead is relatively small for transmission of larg

44、e 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 and NodeB can adjust this resource during the tra

45、nsmission. 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 semi-persistent/long term resource assignment. 4.1.2 Analysis of the concept By this semi-persistent s

46、cheduling 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 - Long term resource assignment shall be introduced in Uplink, and the assignment can be adjusted by Node

47、B 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 active period to the VoIP silence period. 4.1.4 Open issues of the concept - The mapping relation between

48、 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 algorithm, NodeB data receiving information (for instance, SIR measurement or effective traffic statistics, e

49、tc) 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 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 downlink tranmission, HS-SCCH adds a significant overhead to each HS-DSCH transmission. Although this overhead is relatively small for transmission of large packets of data, such as in