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Content for TS 44.056 Word version: 18.0.0

1… 4… 8…

4 Overview/General p. 16

4.1 Overview p. 16

4.1.1 General p. 16

4.1.2 Services provided to upper layers p. 17

4.1.2.1 CTS-Idle mode p. 17

4.1.2.2 Dedicated mode p. 17

4.1.3 Services required from data link and physical layers p. 17

4.1.4 Change of dedicated channels p. 17

4.1.4.1 Change of dedicated channels using SAPI = 0 p. 18

4.1.4.2 Change of dedicated channels using other SAPIs than 0 p. 18

4.1.4.3 Sequenced message transfer operation p. 18

4.1.4.3.1 Variables and sequence numbers p. 18

4.1.4.3.1.1 Send state variable V(SD) p. 18

4.1.4.3.1.2 Send sequence number N(SD) p. 18

4.1.4.3.2 Procedures for the initiation, transfer execution and termination of the sequenced message transfer operation p. 19

4.1.4.3.2.1 Initiation p. 19

4.1.4.3.2.2 Transfer Execution p. 19

4.1.4.3.2.3 Termination p. 19

4.1.5 Procedure for Service Request and Contention Resolution p. 19

4.2 Idle mode procedures p. 19

4.2.1 Mobile Station side p. 19

4.2.1.1 CTSBCH and CTSPCH monitoring p. 19

4.2.1.2 Alive check response p. 20

4.2.2 CTS-FP side p. 20

4.2.2.1 CTSBCH information broadcasting p. 20

4.2.2.2 CTSPCH information broadcasting p. 20

4.2.2.3 Alive check p. 20

4.2.2.4 Hunting p. 21

4.2.2.5 Connectionless group alerting p. 22

4.2.2.6 CTS system information broadcasting p. 23

4.3 RR connection establishment p. 23

4.3.1 RR connection establishment initiated by the mobile station p. 23

4.3.1.1 Entering the dedicated mode: immediate assignment procedure p. 23

4.3.1.1.1 Permission to access the CTS FP p. 24

4.3.1.1.2 Initiation of the immediate assignment procedure p. 24

4.3.1.1.3 Answer from the CTS-FP p. 24

4.3.1.1.3.1 On receipt of a CTS ACCESS REQUEST message p. 24

4.3.1.1.3.2 Assignment rejection p. 24

4.3.1.1.4 Assignment completion p. 24

4.3.1.1.4.1 Early classmark sending p. 25

4.3.1.1.5 Abnormal cases p. 25

4.3.2 Paging procedure for RR connection establishment p. 25

4.3.2.1 Paging initiation by the CTS-FP p. 25

4.3.2.2 Paging response p. 25

4.3.2.3 Abnormal cases p. 25

4.4 Procedures in dedicated mode p. 26

4.4.1 SACCH procedures p. 26

4.4.1.1 General p. 26

4.4.1.2 Measurement report p. 26

4.4.2 Transfer of messages and link layer service provision p. 26

4.4.3 Intracell handover procedure p. 27

4.4.3.1 Intracell handover initiation p. 27

4.4.3.2 Intracell handover completion p. 27

4.4.3.3 Abnormal cases p. 27

4.4.4 Intercell handover procedure p. 28

4.4.5 Frequency hopping definition procedure p. 28

4.4.6 Channel mode modify procedure p. 28

4.4.6.1 Normal channel mode modify procedure p. 28

4.4.6.1.1 Initiation of the channel mode modify procedure p. 28

4.4.6.1.2 Completion of channel mode modify procedure p. 28

4.4.6.1.3 Abnormal cases p. 28

4.4.7 Ciphering mode setting procedure p. 29

4.4.7.1 Ciphering mode setting initiation p. 29

4.4.7.2 Ciphering mode setting completion p. 29

4.4.8 |Reserved: Additional channel assignment procedure| p. 29

4.4.9 |Reserved: Partial channel release procedure| p. 30

4.4.10 Classmark change procedure p. 30

4.4.11 Classmark interrogation procedure p. 30

4.4.12 |Reserved| p. 30

4.4.13 RR connection release procedure p. 30

4.4.13.1 Normal release procedure p. 30

4.4.13.1.1 Channel release procedure initiation p. 30

4.4.13.1.2 Abnormal case p. 30

4.4.13.2 Radio link fai2lure in dedicated mode p. 31

4.4.13.2.1 Mobile side p. 31

4.4.13.2.2 CTS-FP side p. 31

4.4.13.3 RR connection abortion in dedicated mode p. 31

4.4.14 Receiving CTS RR STATUS message by a CTS-RR entity p. 31

4.4.15 CTS RR parameters update p. 31

5 Elementary procedures for Mobility Management p. 32

5.1 General p. 32

5.1.1 Type of CTS-MM procedures p. 32

5.1.2 CTS-MM sublayer states p. 33

5.1.2.1 CTS-MM sublayer states in the mobile station p. 33

5.1.2.1.1 Main states p. 33

5.1.2.1.2 Substates of the CTS-MM IDLE state p. 33

5.1.2.2 CTS-MM sublayer states in the fixed part p. 34

5.2 CTS-MM common procedures p. 34

5.2.1 CTS detach procedure p. 34

5.2.1.1 CTS detach initiation by the mobile station p. 34

5.2.1.2 CTS detach procedure in the fixed part p. 34

5.2.1.3 CTS detach completion by the mobile station p. 34

5.2.1.4 Abnormal cases p. 35

5.2.2 CTS de-enrolment procedure p. 35

5.2.2.1 CTS de-enrolment initiation by the fixed part p. 35

5.2.2.2 CTS de-enrolment procedure in the mobile station p. 35

5.2.2.3 Abnormal cases p. 35

5.2.3 CTS mutual authentication procedure p. 35

5.2.3.1 CTS authentication initiation by the fixed part p. 35

5.2.3.2 CTS authentication response by the mobile station p. 36

5.2.3.3 CTS authentication processing by the fixed part p. 36

5.2.3.4 CTS authentication completion by the mobile station p. 36

5.2.3.5 Unsuccessful authentication p. 36

5.2.3.6 Abnormal cases p. 36

5.2.4 CTSMSI update procedure p. 37

5.2.4.1 CTSMSI update initiation by the fixed part p. 37

5.2.4.2 CTSMSI update response by the mobile station p. 37

5.2.4.3 CTSMSI update completion in the fixed part p. 37

5.2.4.4 Abnormal cases p. 37

5.3 CTS-MM specific procedures p. 38

5.3.1 CTS enrolment procedure p. 38

5.3.1.1 CTS enrolment initiation by the mobile station p. 38

5.3.1.2 CTS enrolment completion by the fixed part p. 38

5.3.1.3 CTS enrolment completion by the mobile station p. 38

5.3.1.4 Unsuccessful enrolment p. 38

5.3.1.5 Abnormal cases p. 38

5.3.2 CTS attach procedure p. 38

5.3.2.1 CTS attach initiation by the mobile station p. 39

5.3.2.2 CTS attach completion by the fixed part p. 39

5.3.2.3 CTS attach completion by the mobile station p. 39

5.3.2.4 CTS attach rejection treatment by the mobile station p. 39

5.3.2.5 Abnormal cases p. 39

5.3.3 CTS re-attach procedure p. 39

5.3.3.1 CTS re-attach initiation by the mobile station p. 40

5.3.3.2 CTS re-attach completion by the fixed part p. 40

5.3.3.3 Abnormal cases p. 40

5.3.4 CTS periodic attach update procedure p. 40

5.3.4.1 CTS periodic attach update procedure behaviour in the fixed part p. 40

5.3.4.2 Abnormal cases p. 40

6 Elementary procedures for circuit-switched Call Control p. 41

6.1 Overview p. 41

6.1.1 General p. 41

6.2 Hook flash procedure p. 41

6.2.1 Hook flash request by the mobile station p. 41

6.2.2 Hook flash response by the fixed part p. 41

6.2.3 Stop hook flash request by the mobile station p. 41

6.2.4 Stop hook flash response by fixed part p. 42

6.3 Internal call procedure p. 42

7 Examples of structured procedures p. 42

7.1 General p. 42

7.1.1 CTS paging request p. 42

7.1.2 CTS immediate assignment p. 42

7.1.3 CTS mutual authentication p. 43

7.2 Abnormal cases p. 43

7.3 Selected examples p. 43

7.3.1 Enrolment p. 43

7.3.1.1 Enrolment with CTS-MS identity authentication done only by the CTS-FP p. 44

7.3.1.2 Enrolment with CTS MS authentication done by CTS operator p. 45

7.3.2 Attachment p. 46

7.3.3 Detachment p. 46

7.3.4 De-enrolment p. 47

7.3.5 Mobile originating call establishment p. 47