1、 ETSI TS 1Digital cellular telecommGSM/EDGE Rad(3GPP TS 45.0TECHNICAL SPECIFICATION145 010 V13.4.0 (2017mmunications system (Phase io subsystem synchronizati.010 version 13.4.0 Release 13GLOBAL SYSTEMOBILE COMMUN17-01) e 2+) (GSM); ation 13) TEM FOR ICATIONSRETSI ETSI TS 145 010 V13.4.0 (2017-01)13G
2、PP TS 45.010 version 13.4.0 Release 13Reference RTS/TSGR-0645010vd40 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 Gras
3、se (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 wit
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9、(2017-01)23GPP TS 45.010 version 13.4.0 Release 13Intellectual 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 b
10、e 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 I
11、PR 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 Th
12、is Technical Specification (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 correspond
13、ing 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“ a
14、re 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 ETSI TS 145 010 V13.4.0 (2017-01)33GPP TS 45.010 version 13.4.0 Release 13C
15、ontents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g31 Scope 6g31.1 References 6g31.2 Definitions and abbreviations . 6g32 General description of synchronization system 8g33 Timebase counters 9g33.1 Timing state of the signals 9g33.2 Relationship between cou
16、nters . 9g34 Timing of transmitted signals . 9g35 BTS Requirements for Synchronization . 10g35.0 General . 10g35.1 Frequency source 11g35.2 Timebase counters 11g35.3 Internal BTS carrier timing 11g35.4 Initial Timing advance estimation 11g35.5 Maximum timing advance value 11g35.6 Delay tracking 12g3
17、5.6.1 For circuit switched channels 12g35.6.2 For packet switched channels . 12g35.6.3 Delay assessment error . 12g35.6.4 Pico-BTS and Local Area multicarrier BTS delay tracking . 12g35.7 Timeslot length . 12g35.7.0 Implementation options 12g35.7.1 Regular implementation with timeslot lengths of non
18、-integral symbol periods . 13g35.7.2 Implementation option for reduced symbol period bursts when integral symbol period option is used for normal symbol period bursts . 14g35.8 Range of Timing advance . 15g36 MS Requirements for Synchronization 16g36.0 General . 16g36.1 MS carrier frequency 16g36.2
19、Internal timebase 16g36.3 Assessment of BTS timing . 16g36.4 Timing of transmission . 16g36.5 Application of Timing Advance . 17g36.5.1 For circuit switched channels 17g36.5.2 For packet switched channels . 17g36.6 Access to a new BTS 18g36.7 Temporary loss of signal 19g36.8 Timing of channel change
20、 19g36.9 Application of new Timing Advance value 19g36.10 Definition of “ready to transmit within x ms“ 19g36.11 Definition of additional reaction times for GPRS mobile stations . 20g36.11.1 Uplink and downlink assignment reaction times 20g36.11.2 Change in channel coding scheme commanded by network
21、 . 21g36.11.3 Contention resolution reaction time 21g36.11.4 Reaction time in response to other commanding messages 21g36.11.5 PAN related reaction times . 21g36.11.6 DTR related reaction times . 22g3ETSI ETSI TS 145 010 V13.4.0 (2017-01)43GPP TS 45.010 version 13.4.0 Release 136.12 Observed Frequen
22、cy Offset (OFO) reported by the CTS-MS 23g36.13 Timing of inter-RAT channel change from GSM to UTRAN 23g36.13a Timing of inter-RAT channel change from GSM to E-UTRAN 23g36.14 Timing of combined intracell channel change and packet assignment . 24g37 CTS-FP Requirements for Synchronization . 24g37.1 F
23、requency source default requirements 24g37.2 Frequency source for a CTS-FP assisted by a CTS-MS . 24g37.3 Internal CTS-FP carrier timing . 24g37.4 Timeslot length . 25g37.5 Assessment of CTS-MS delay 25g3Annex A (normative): Additional requirements for pseudo-synchronization, synchronized handovers
24、and pseudo-synchronized handovers . 26g3A.1 General descriptions and definitions 26g3A.1.1 Conventions 26g3A.1.2 Definitions 26g3A.1.3 Details of operations . 26g3A.2 BTS requirements . 27g3A.2.1 The pseudo-synchronization scheme 27g3A.2.1.1 BTS a time difference estimate . 27g3A.2.1.2 The reception
25、 epoch criterion . 27g3A.2.1.3 Pseudo-synchronized handover 27g3A.2.2 The synchronization scheme 27g3A.3 MS requirements 28g3A.3.1 Provision of time difference information . 28g3A.3.2 After each successful circuit-switched handover . 28g3A.3.3 Synchronized or a pseudo synchronized handover . 28g3Ann
26、ex B (informative): CTSBCH timeslot shifting properties for CTS-MS synchronization 29g3B.1 Determination of TN by the CTS-MS when CTSBCH shifting is not active 29g3B.2 Determination of TN by the CTS-MS when CTSBCH shifting is active 29g3Annex C (informative): BTS frequency source stability and E-OTD
27、 LMU reporting periods for LCS . 30g3C.1 BTS frequency source stability and E-OTD LMU reporting periods . 30g3C.2 Frequency source stability 30g3C.3 Relationship to E-OTD reporting periods 30g3Annex D (informative): Change history . 32g3History 36g3ETSI ETSI TS 145 010 V13.4.0 (2017-01)53GPP TS 45.0
28、10 version 13.4.0 Release 13Foreword 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 contents of
29、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 u
30、nder 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 ETSI TS 145 010 V13.4.0 (2017-01)63GPP TS 45.010 vers
31、ion 13.4.0 Release 131 Scope The present document defines the requirements for synchronization on the radio sub-system of the digital cellular telecommunications systems GSM. However, it does not define the synchronization algorithms to be used in the Base Transceiver Station (BTS), CTS Fixed Part (
32、CTS-FP) and Mobile Station (MS). These are up to the manufacturer to specify. 1.1 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 n
33、umber, 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
34、version of that document in the same Release as the present document. 1 3GPP TR 21.905: Vocabulary for 3GPP Specifications. 2 3GPP TS 25.123: Requirements for support of radio resource management (TDD). 3 3GPP TS 25.133: Requirements for support of radio resource management (FDD). 4 3GPP TR 43.030:
35、Radio network planning aspects. 5 3GPP TS 43.052: Lower layers of the Cordless Telephony System (CTS) Radio Interface; Stage 2. 6 3GPP TS 43.059: Functional stage 2 description of Location Services (LCS) in GERAN. 7 3GPP TS 43.064: Overall description of the GPRS radio interface; Stage 2. 8 3GPP TS
36、44.018: Mobile radio interface layer 3 specification, Radio Resource Control Protocol. 9 3GPP TS 44.060: General Packet Radio Service (GPRS); Mobile Station (MS) - Base Station System (BSS) interface; Radio Link Control/ Medium Access Control (RLC/MAC) protocol. 10 3GPP TS 45.002: Multiplexing and m
37、ultiple access on the radio path. 11 3GPP TS 45.005: Radio transmission and reception. 12 3GPP TS 45.008: Radio subsystem link control. 13 3GPP TS 45.050: Background for RF Requirements. 14 3GPP TS 45.056: CTS-FP Radio Sub-system. 15 3GPP TS 45.004: Modulation. 16 3GPP TS 36.133: Evolved Universal T
38、errestrial Radio Access (E-UTRA); Requirements for support of radio resource management. 17 3GPP TS 36.211: Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation. 1.2 Definitions and abbreviations In addition to those below, abbreviations used in the present document
39、are listed in 3GPP TR 21.905. ETSI ETSI TS 145 010 V13.4.0 (2017-01)73GPP TS 45.010 version 13.4.0 Release 13BTS: Base Transceiver Station. BTTI: Basic TTI. Coverage Class: see definition in 3GPP TS 43.064. CTS-FP: CTS Fixed Part. CTS-MS: MS operating in CTS mode. Current Serving BTS: BTS on one of
40、whose channels (TCH, DCCH, CCCH or PDCH) the MS is currently operating. Current Serving CTS-FP: CTS-FP on one of whose channels (TCH or CTS control channels) the CTS-MS is currently operating. EC: Extended Coverage, see definition in 3GPP TS 43.064. EC operation: see definition in 3GPP TS 43.064. EC
41、-GSM-IoT: Extended Coverage GSM for Internet of Things. FANR (Fast Ack/Nack Reporting): Fast Ack/Nack Reporting enables the use of a PAN field within an RLC/MAC block for EGPRS data transfer or for EGPRS2 data transfer. FANR enables the mobile station to transmit in the uplink direction a PAN field
42、corresponding to a downlink TBF. Similarly FANR enables the network to transmit in the downlink direction a PAN field corresponding to an uplink TBF. MS timing offset: delay of the received signal relative to the expected signal from an MS at zero distance under static channel conditions with zero t
43、iming advance. This is accurate to 1 symbol, and reported once per SACCH or after a RACH as. required (i.e. at the same rate as timing advance). For example, for an MS with a round trip propagation delay of P symbols, but with a timing advance of T symbols, the reported timing offset will be P-T qua
44、ntized to the nearest symbol. For GPRS the MS timing offset is not reported. Normal Symbol Period: duration of a symbol for bursts using a modulating symbol rate of 1625/6 ksymb/s (see 3GPP TS 45.004); it is equal to 48/13 s. This symbol duration is used for transmission of GMSK, 8PSK, 16QAM and 32Q
45、AM modulated bursts on downlink and GMSK, 8PSK and 16QAM modulated bursts on uplink (see 3GPP TS 45.004). Observed Frequency Offset (OFO): difference of frequency of signals received by a CTS-MS from a CTS-FP and a BTS. The Observed Frequency Offset is measured and reported by the CTS-MS on CTS-FP r
46、equirement. The Observed Frequency Offset is expressed in ppm with an accuracy of 1/64 ppm (i.e. about 0,016 ppm). PAN: Piggy-backed Ack/Nack. Quarter symbol number: timing of quarter symbol periods (12/13 s or 10/13 s depending on the actual symbol period used) within a timeslot. A symbol can repre
47、sent 1 to 5 bits depending upon modulation. Reduced Latency: refers to the use of FANR either in BTTI configuration or in RTTI configuration for EGPRS and EGPRS2. Reduced Symbol Period: duration of a symbol for bursts using a modulating symbol rate of 325 ksymb/s (see 3GPP TS 45.004); it is equal to
48、 40/13 s. This symbol duration is used for transmission of QPSK, 16QAM and 32QAM modulated bursts on uplink and downlink (see 3GPP TS 45.004). RTTI: Reduced TTI. Symbol Period: symbol period is the duration of a symbol and shall refer to normal symbol period unless explicitly clarified to be the red
49、uced symbol period. TDMA frame number: count of TDMA frames relative to an arbitrary start point. Timebase counters: set of counters which determine the timing state of signals transmitted by a BTS or MS. Time group (TG): used for compact, time groups shall be numbered from 0 to 3 and a particular time group shall be referred to by its time group number (TG) (see 3GPP TS 45.002). Timeslot number: timing of timeslots within a TDMA frame. ETSI ETSI TS 145 010 V13.4.0 (2017-01)83GPP TS 45.010 version 13.4.
