【資料名稱】：GSM協(xié)議3GPP

【資料作者】：DANDE

【資料日期】：2010-11

【資料語言】：英文

【資料格式】：DOC

【資料目錄和簡介】：

Contents
Foreword5
1Scope6
1.1References6
1.2Definitions and abbreviations6
2General description of synchronization system8
3Timebase counters9
3.1Timing state of the signals9
3.2Relationship between counters9
4Timing of transmitted signals9
5BTS Requirements for Synchronization10
5.1Frequency source10
5.2Timebase counters10
5.3Internal BTS carrier timing10
5.4Initial Timing advance estimation11
5.5Maximum timing advance value11
5.6Delay tracking11
5.6.1For circuit switched channels11
5.6.2For packet switched channels11
5.6.3Delay assessment error11
5.6.4Pico-BTS delay tracking12
5.7Timeslot length12
5.7.1 Regular implementation with timeslot lengths of non-integral symbol periods12
5.7.2 Implementation option for reduced symbol period bursts when integral symbol period option is used for normal symbol period bursts13
5.8Range of Timing advance14
6MS Requirements for Synchronization15
6.1MS carrier frequency15
6.2Internal timebase15
6.3Assessment of BTS timing15
6.4Timing of transmission15
6.5Application of Timing Advance16
6.5.1For circuit switched channels16
6.5.2For packet switched channels16
6.6Access to a new BTS17
6.7Temporary loss of signal18
6.8Timing of channel change18
6.9Application of new Timing Advance value18
6.10Definition of "ready to transmit within x ms"18
6.11Definition of additional reaction times for GPRS mobile stations19
6.11.1Uplink and downlink assignment reaction times19
6.11.2Change in channel coding scheme commanded by network19
6.11.3Contention resolution reaction time19
6.11.4Reaction time in response to other commanding messages20
6.11.5PAN related reaction times20
6.11.6DTR related reaction times20
6.12Observed Frequency Offset (OFO) reported by the CTS-MS21
6.13Timing of inter-RAT channel change from GSM to UTRAN21
6.13aTiming of inter-RAT channel change from GSM to E-UTRAN22
6.14Timing of combined intracell channel change and packet assignment22
7CTS-FP Requirements for Synchronization23
7.1Frequency source default requirements23
7.2Frequency source for a CTS-FP assisted by a CTS-MS23
7.3Internal CTS-FP carrier timing23
7.4Timeslot length23
7.5Assessment of CTS-MS delay23
Annex A (normative):Additional requirements for pseudo synchronization, synchronized handovers and pseudo synchronized handovers24
A.1General descriptions and definitions24
A.1.1Conventions24
A.1.2Definitions24
A.1.3Details of operations24
A.2BTS requirements25
A.2.1The pseudo synchronization scheme25
A.2.1.1BTS a time difference estimate25
A.2.1.2The reception epoch criterion25
A.2.1.3Pseudo synchronized handover25
A.2.2The synchronization scheme25
A.3MS requirements26
A.3.1Provision of time difference information26
A.3.2After each successful circuit-switched handover26
A.3.3Synchronized or a pseudo synchronized handover26
Annex B (informative):CTSBCH timeslot shifting properties for CTS-MS synchronization27
B.1Determination of TN by the CTS-MS when CTSBCH shifting is not active27
B.2Determination of TN by the CTS-MS when CTSBCH shifting is active27
Annex C (informative):BTS frequency source stability and E-OTD LMU reporting periods for LCS28
C.1BTS frequency source stability and E-OTD LMUreporting periods28
C.2Frequency source stability28
C.3Relationship to E-OTD reporting periods28
Annex D (informative):Change history30