Telecommunication.doc

CWTS TSM 05.08 V1.1.0 (2001-4)China Wireless Telecommunication Standard;3G digital cellular telecommunications system;TD-SCDMA System for Mobile(TSM);Radio subsystem link control TSMCWTS TSM 05.08 V1.1.0 (2001-4)70ContentsIntellectual Property Rights6Foreword71Scope81.1References81.2Abbreviations92General103Handover113.1Overall process113.2UE measurement procedure113.3BSS measurement procedure113.4Strategy114RF power control134.1Overall process134.1.1Open Loop Power Control procedure: General134.1.2Inner Loop Power Control procedure: General134.2UE implementation134.2.1Open loop power control144.2.2Inner loop power control144.2.3UE power control range154.3BSS implementation154.3.1Common Control physical CHannelsP-CCPCH and DwPTSS-CCPCHP-FACH154.3.2Dedicated physical channelsOpen Loop power controlInner Loop power controlPower control and beamforming164.3.3BSS power control range164.4Timing164.5Dedicated channels used for a voice group call or voice broadcast165Uplink synchronisation control185.1Overall Process185.1.1.Uplink Synchronisation control by higher layer messages185.1.2.Uplink Synchronisation control by Layer 1 control symbols186Beamforming207Radio link failure217.1Criterion217.2Radio Link Failure in CS mode217.2.1UE procedure217.2.2.BSS procedure217.3Radio Link Failure in PS mode228Idle mode tasks238.1Introduction238.2Measurements for normal cell selection238.3Measurements for stored list cell selection248.4Criteria for cell selection and reselection248.5Downlink signalling failure258.6Measurements for Cell Reselection258.6.1Monitoring of received signal level and BCCH data268.6.2Path loss criteria and timings for cell reselection268.7Release of DCH and SDCCH278.7.1Normal case278.7.2Call reestablishment278.8Abnormal cases and emergency calls289Network prerequisites299.1Beacon channels299.2Identification of surrounding BSS for handover measurements2910Radio link measurements3110.1Received Signal Code Power (RSCP)3110.1.1General3110.1.2Physical parameters3110.1.3Statistical parameters3110.1.4Range of values3210.2GSM carrier RSSI (RXLEV)3210.3Interference Signal Code Power (ISCP)3310.3.1General3310.3.2Physical parameters and range of values3310.3.3Statistical parameters3310.4TD-SCDMA carrier RSSI3310.4.1General3310.4.2Physical and statistical parameters3310.4.3Range of values3410.5SIR3410.5.1General3410.5.2Physical parameters3510.5.3Statistical parameters3510.5.4Range of values3510.6Transport Channel BLER3510.6.1General3510.6.2Physical parameters3510.6.3Statistical parameters3510.6.4Range of values3610.7Physical channel BER3610.7.1General3610.7.2Physical parameters3610.7.3Statistical parameters3610.7.4Range of values3610.8Transport Channel BER3710.8.1General3710.8.2Physical parameters3710.8.3Statistical parameters3710.8.4Range of values3710.9UE Transmitted power3710.9.1General3710.9.2Physical parameters3810.9.3Statistical parameters3810.9.4Range of values3810.10BSS Transmitted carrier power ratio3810.10.1General3810.10.2Physical parameters3810.10.3Statistical parameters3910.10.4Range of values3910.11BSS transmitted code power3910.11.1General3910.11.2Physical parameters3910.11.3Statistical parameters3910.11.4Range of values3910.12SFN-SFN Observed time difference4010.12.1General4010.12.2Physical parameters and range of values4010.12.3Statistical parameters4010.13GSM observed time difference4010.13.1General4010.12.2Physical parameters and range of values4010.12.3Statistical parameters4110.13Rx timing deviation4110.13.1General4110.13.2Physical parameters and range of values4110.13.3Statistical parameters4110.14Aspects of discontinuous transmission (DTX)4110.15Measurement reporting4110.15.1Measurement reporting for the UE on a DCH4110.15.2Measurement reporting for the UE on a SDCCH4310.15.3Additional cell reporting requirements for multi band UE4310.15.4Common aspects for the UE on a DCH or SDCCH4410.15.5Measurement reporting for the BSS4410.15.6Extended measurement reporting4410.16Absolute UEBTS distance4510.16.1General4510.16.2Physical parameter4511.Control parameters4612GPRS mode tasks4912.1Cell Re-selection4912.1.1Monitoring the received signal level49Packet idle mode49Packet transfer mode4912.1.2Cell Re-selection Criteria5112.1.3Cell Re-selection Algorithm5Abnormal cell reselection5212.1.4Network controlled Cell re-selection5Measurement reporting53Cell re-selection command53Exceptional cases5312.1.5Extended Measurement reporting5412.2RF Power Control and Synchronisation Shift control5412.2.1UE output power control5412.2.2BTS output power control5412.2.3UE Synchronisation Shift control5512.2.4Measurements at UE side55Deriving the C value55.1Packet idle mode55.2Packet transfer mode56Derivation of Channel Quality Report57.1Packet transfer mode57.2Packet idle mode5712.2.5Measurements at BSS side5812.3Measurement requirements5812.4Control parameters58Annex A (Normative):Mapping rules between GSM RXLEV and TD-SCDMA RSCP levels62A.1Use of Mapping Functions62Annex B (Normative): Test Cases63B.1Introduction63B.2Idle Mode63B.2.1Cell selection63B.2.1.1Cells in the neighbour list belonging to different frequencies63B. Test requirements63B.2.1.2No cell is present in the neighbour list63B. Test requirements64B.2.2.1Single carrier case64B. Test requirements64B.2.2.2Multi-carrier case64B.Test requirements65B.2.3TD-SCDMA to GSM Cell Re-Selection65B.2.3.1Test requirements65Annex C (Informative): Cell search procedure66Annex D (Informative): Monitoring GSM from TD-SCDMA: calculation results67D.1Low data rate traffic using 1 uplink and 1 downlink slot only67Annex E (Informative): An Example for Calculating a69Intellectual Property RightsForewordThe present document specifies the Radio subsystem link control implemented in the User Equipment (UE), Base Station System (BSS) and Mobile Switching Centre (MSC) of the 3G digital mobile cellular and personal communication systems operating in the IMT-2000 Frequency bands.The contents of this Technical Specification (TS) are subject to continuing work within CWTS WG2. It will be re-released by CWTS with an identifying change of release date and an increase in version number as follows:Version x.y.zwhere:xthe first digit indicates the TD-SCDMA release;ythe second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc;zthe third digit is incremented when only editorial changes have been incorporated in the specification.Proposed national transposition datesDate of latest announcement of this Technical Specification (TS; doa):XX months after CWTS publicationDate of latest publication of new National Standardor endorsement of this TS (dop/e):XX months after doaDate of withdrawal of any conflicting National Standard (dow):XX months after doa1ScopeThe present document specifies the Radio subsystem link control implemented in the User Equipment (UE), Base Station System (BSS) and Mobile Switching Centre (MSC) of the TD-SCDMA systems.1.1ReferencesThe 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 nonspecific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. A non-specific reference to a TS shall also be taken to refer to later versions published with the same number. For this Release X document, references to GSM documents are for Release 1997 versions (version 6.x.y) while references to TSM documents are for Release X versions (version x.y.z).1GSM 01.04 “Digital cellular telecommunications system (Phase 2+); Abbreviations and acronyms 2GSM 03.03: Digital cellular telecommunications system (Phase2+); Numbering, addressing and identification3GSM 03.09: Digital cellular telecommunications system (Phase2+); Handover procedures4TSM 03.22: China Wireless Telecommunication Standard; 3G digital cellular telecommunications system; TD-SCDMA System for Mobile(TSM); Functions related to User Equipment in idle mode and group receive mode5TSM 04.04: China Wireless Telecommunication Standard; 3G digital cellular telecommunications system; TD-SCDMA System for Mobile(TSM); Layer1; General requirements6TSM 04.06: China Wireless Telecommunication Standard; 3G digital cellular telecommunications system; User Equipment Base Station System (UE BSS) interface; Data Link (DL) layer specification7TSM 04.08: China Wireless Telecommunication Standard; 3G digital cellular telecommunications system; Mobile radio interface layer 3 specification; Part 1: Radio Resource Management8TSM 05.02: China Wireless Telecommunication Standard; 3G digital cellular telecommunications system; TD-SCDMA System for Mobile(TSM); Multiplexing and multiple access on the radio path9TSM 05.05: China Wireless Telecommunication Standard; 3G digital cellular telecommunications system; TD-SCDMA System for Mobile(TSM); Radio transmission and reception10TSM 05.10: China Wireless Telecommunication Standard; 3G digital cellular telecommunications system; TD-SCDMA System for Mobile(TSM); Radio subsystem synchronisation11GSM 06.11: Digital cellular telecommunications system; Full rate speech; Substitution and muting of lost frames for full rate speech channels12GSM 08.08: Digital cellular telecommunications system (Phase2+); Mobileservices Switching Centre Base Station System (MSC BSS) interface, Layer 3 specification13GSM 08.58: Digital cellular telecommunications system (Phase2+); Base Station Controller Base Transceiver Station (BSC BTS) interface; Layer 3 specification14GSM 11.10: Digital cellular telecommunications system (Phase2+); Mobile Station (MS) conformity specification15TSM 03.64: China Wireless Telecommunication Standard; 3G digital cellular telecommunications system; TD-SCDMA Packet Radio Service (TD-PRS); Overall description of the TD-PRS Radio Interface16TSM 04.60: “China Wireless Telecommunication Standard; 3G digital cellular telecommunications system; General Packet Radio Service (GPRS); User Equipment Base Station System (UE BSS) interface; Radio Link Control/Medium Access (RLC/MAC) Control protocol”17TSM 01.04: China Wireless Telecommunication Standard; 3G digital cellular telecommunications system; TD-SCDMA System for Mobile(TSM); Abbreviations and acronyms18GSM 05.08: “Digital cellular telecommunications system (Phase 2+); Radio subsystem link control”19GSM 03.68: “ Digital cellular telecommunications system (Phase 2+); Voice Group Call Service (VGCS) stage 2”20GSM 05.05: Digital cellular telecommunications system (Phase 2+); Radio transmission and reception21GSM 05.10: Digital cellular telecommunications system (Phase 2+); Radio subsystem synchronisation22GSM 06.12: “Confort noise aspects for full-rate speech traffic channels”23GSM 06.31: “Discontinuous transmission (DTX) for full-rate speech traffic channels”24GSM 02.06: “Types of Mobile Stations”1.2AbbreviationsAbbreviations used in the present document are listed in GSM 01.04 1 and in TSM 01.04 17.2GeneralThe radio subsystem link control aspects that are addressed are as follows:Handover;RF Power control;Radio link Failure;Cell selection and reselection in Idle mode, in Group Receive mode and in GPRS mode (see TSM 03.22 4).Handover is required to maintain a call in progress as a UE engaged in a pointtopoint call or with access to the uplink of a channel used for a voice group call passes from one cell coverage area to another and may also be employed to meet network management requirements, e.g. relief of congestion.Handover may occur during a call from one TCH or multiple TCHs (in the case of multiresouce configuration) to another TCH or multiple TCHs. It may also occur from DCCH to DCCH or from DCCH to one or multiple TCH(s), e.g. during the initial signalling period at call setup.The handover may be either from channel(s) on one cell to other channel(s) on a surrounding cell, or between channels on the same cell which are carried on the same or different frequencies. For a multiband UE, handover is also allowed between any channels on different cells which are carried on different frequency bands. Therefore, during a handover change of frequency, as well as change of frequency band, is allowed but with the constraint that all active channels of a connection be always on the same frequency. Handover between two colocated cells, carried on different frequency bands, is considered as intercell handover irrespective of the handover procedure used. Examples of Handover strategies are given see sub-clause 3.4), though the details will be determined by the network operator.For a multimode UE (e.g. a GSM/TD-SCDMA dual mode UE), the handover described is also allowed between any channels on different cells which also belong to different systems, e.g. TD-SCDMA and GSM respectively. This type of Handover is named Inter-System Handover.Adaptive control of the RF transmit power from a UE and optionally from the BSS is implemented in order to optimize the uplink and downlink performance and minimize the effects of cochannel interference in the system.The criteria for determining radio link failure are specified in order to ensure that calls which fail either from loss of radio coverage or unacceptable interference are satisfactorily handled by the network. Radio link failure may result in either reestablishment or release of the call in progress. For channels used for a voice group call, a radio uplink failure results in the freeing up of the uplink.Procedures for cell selection and reselection whilst in Idle mode (i.e. not actively processing a call), are specified in order to ensure that a mobile is camped on a cell with which it can reliably communicate on both the radio uplink and downlink. The operations of a UE in Idle Mode are specified in TSM 03.22 4.Cell re-selection is also performed by the UE when attached to GPRS, except when the UE simultaneously has a circuit switched connection. Optional procedures are also specified for network controlled cell re-selection for GPRS. Cell re-selection for GPRS is defined in subclause 12.1.A UE listening to a voice group call or a voice broadcast uses cell reselection procedures to change cell. This may be supported by a list of cells carrying the voice group or voice broadcast call downlink, provided to the UE by the network. The operations of a UE in Group Receive Mode are specified in TSM 03.22 4.Information signalled between the UE and BSS is summarized in tables 1, 2 and 3. A full specification of the Layer 1 header is given in TSM 04.04 5, and of the Layer 3 fields in TSM 04.08 7.3Handover3.1Overall processThe overall handover process is implemented in the UE, BSS and MSC. Measurement of radio subsystem downlink performance and signal levels received from surrounding cells, is made in the UE. These measurements are signalled to the BSS for assessment. The BSS measures the uplink performance for the UE being served and also assesses the signal level of interference on its idle traffic channels (note here that an idle channel does not necessarily correspond to an idle time slot due to the Code Multiple Access property of the TD-SCDMA systems). Initial assessment of the measurements in conjunction with defined thresholds and handover strategy may be performed in the BSS. Assessment requiring measurement results from other BTS or other information resident in the MSC, may be performed in the MSC.GSM03.09 3 describes the handover procedures to be used in PLMNs.3.2UE measurement procedureA procedure shall be implemented in the UE by which it monitors the downlink RX signal level and quality from its serving cell and the downlink RX signal levels and Cell identities of surrounding BTSs. The method of identification of a surrounding BTS is described in subclause 9.2. The requirements for the UE measurements are given in subclause 10.3.3BSS measurement procedureA procedure shall be implemented in the BSS by which it monitors the uplink RX signal level and quality from each UE being served by the cell. In the case of a multi-slot configuration the RX signal level and Physical Bit Error Rate (PHL_BER) evaluations shall be performed on a timeslot per timeslot basis; in case of a multi-Transport channel configuration, the Transport channel BER (TrCH_BER) and Transport Channel Block Error Rate (TrCH_BLER) evaluations shall be performed on transport channel base. A procedure shall be implemented by which the BSS monitors the levels of interference on all its uplink idle traffic channels.3.4StrategyThe handover strategy employed by the network for radio link control determines the handover decision that will be made based on the measurement results reported by the UE/BSS and various parameters set for each cell. Network direc