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Content for TS 45.010 Word version: 18.0.0

1… 5…

5 BTS Requirements for Synchronization p. 11

5.0 General |R13| p. 11

5.1 Frequency source p. 11

5.2 Timebase counters p. 11

5.3 Internal BTS carrier timing p. 11

5.4 Timing advance estimation p. 11

5.4.1 Initial timing advance estimation |R14| p. 11

5.4.2 BTS Timing Advance Estimation for Positioning |R14| p. 12

5.5 Maximum timing advance value p. 13

5.6 Delay tracking p. 13

5.6.1 For circuit switched channels p. 13

5.6.2 For packet switched channels p. 14

5.6.3 Delay assessment error p. 14

5.6.4 Pico-BTS and Local Area multicarrier BTS delay tracking p. 14

5.7 Timeslot length p. 14

5.7.0 Implementation options |R13| p. 14

5.7.1 Regular implementation with timeslot lengths of non-integral symbol periods |R7| p. 14

5.7.2 Implementation option for reduced symbol period bursts when integral symbol period option is used for normal symbol period bursts |R7| p. 16

5.8 Range of Timing advance p. 17

6 MS Requirements for Synchronization p. 17

6.0 General |R13| p. 17

6.1 MS carrier frequency p. 17

6.2 Internal timebase p. 17

6.3 Assessment of BTS timing p. 18

6.3.1 General |R14| p. 18

6.3.2 MS Assessment of BTS timing for Positioning |R14| p. 18

6.4 Timing of transmission p. 19

6.5 Application of Timing Advance p. 19

6.5.1 For circuit switched channels p. 19

6.5.2 For packet switched channels p. 20

6.6 Access to a new BTS p. 20

6.7 Temporary loss of signal p. 21

6.8 Timing of channel change p. 21

6.9 Application of new Timing Advance value p. 22

6.10 Definition of "ready to transmit within x ms" p. 22

6.11 Definition of additional reaction times for GPRS mobile stations p. 22

6.11.1 Uplink and downlink assignment reaction times p. 22

6.11.2 Change in channel coding scheme commanded by network p. 23

6.11.3 Contention resolution reaction time p. 24

6.11.4 Reaction time in response to other commanding messages p. 24

6.11.5 PAN related reaction times |R7| p. 24

6.11.6 DTR related reaction times |R10| p. 25

6.12 Observed Frequency Offset (OFO) reported by the CTS-MS p. 25

6.13 Timing of inter-RAT channel change from GSM to UTRAN p. 25

6.13a Timing of inter-RAT channel change from GSM to E-UTRAN |R8| p. 26

6.14 Timing of combined intracell channel change and packet assignment p. 26

7 CTS-FP Requirements for Synchronization p. 27

7.1 Frequency source default requirements p. 27

7.2 Frequency source for a CTS-FP assisted by a CTS-MS p. 27

7.3 Internal CTS-FP carrier timing p. 27

7.4 Timeslot length p. 27

7.5 Assessment of CTS-MS delay p. 27

A (Normative) Additional requirements for pseudo synchronization, synchronized handovers and pseudo synchronized handovers p. 28

A.1 General descriptions and definitions p. 28

A.1.1 Conventions p. 28

A.1.2 Definitions p. 28

A.1.3 Details of operations p. 28

A.2 BTS requirements p. 29

A.2.1 The pseudo synchronization scheme p. 29

A.2.1.1 BTS a time difference estimate p. 29

A.2.1.2 The reception epoch criterion p. 29

A.2.1.3 Pseudo synchronized handover p. 29

A.2.2 The synchronization scheme p. 29

A.3 MS requirements p. 30

A.3.1 Provision of time difference information p. 30

A.3.2 After each successful circuit-switched handover p. 30

A.3.3 Synchronized or a pseudo synchronized handover p. 30

B CTSBCH timeslot shifting properties for CTS-MS synchronization p. 31

B.1 Determination of TN by the CTS-MS when CTSBCH shifting is not active p. 31

B.2 Determination of TN by the CTS-MS when CTSBCH shifting is active p. 31

C BTS frequency source stability and E-OTD LMU reporting periods for LCS p. 32

C.1 BTS frequency source stability and E-OTD LMU reporting periods p. 32

C.2 Frequency source stability p. 32

C.3 Relationship to E-OTD reporting periods p. 32

$ Change history p. 34