26.6.13 Test of starting time

3GPP51.010-1Mobile Station (MS) conformance specificationPart 1: Conformance specificationTS

The Assignment, Handover and immediate assignment procedures can include a delayed change of frequency list, MAIO and HSN. This series of tests checks the behaviour of the Mobile Station when receiving channel allocation messages with a starting time and channel description for both before and after the starting time. Tests checking the phase 1 usage of the starting time (that is without a channel description for before the time) are included in the series related to immediate assignment, dedicated assignment and handover.

Throughout subclause 26.6.13 the defaults in the following subclauses

Table 26.6

Band

Defaults sub-clause

GSM 450

26.6.16

GSM 480

26.6.17

GSM 710

26.6.21

GSM 750

26.6.19

T-GSM 810

26.6.22

GSM 850

26.6.20

GSM 900

26.6.14

DCS 1 800

26.6.15

PCS 1 900

26.6.18

are used with the following exceptions:

Contents of IMMEDIATE ASSIGNMENT message, unless otherwise defined in the individual test cases:

L2 pseudo length

This is the sum of the lengths of all the information elements present in the message except for the IA rest octets and L2 pseudo length IEs. For the default message the L2 pseudo length is 11.

Protocol Discriminator

RR Management.

Skip Indicator

0000

Message Type

00111111

Page Mode

– Page Mode

Normal Paging.

Channel Description

– Channel Type and TDMA offset

Chosen arbitrarily (see initial conditions).

– Timeslot Number

Chosen arbitrarily by the test house;

– Training Sequence Code

Chosen arbitrarily by the test house

– Hopping

Yes.

– Hopping parameters

Chosen arbitrarily.

Request Reference

Pertaining to last Channel Request sent by the MS.

Timing Advance

– Timing advance value

30 bit periods.

Mobile Allocation

Chosen arbitrarily, at least one frequency. In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

Starting Time

Not present.

IA rest octets

Not used (all bits set to spare).

Two cells are defined:

Band

Cell A

Cell B

CA Coding format – both cells

BCCH ARFCN

Cell allocation

BCCH ARFCN

Cell allocation

GSM 450

263

259, 261, 263, 265, 267, 269, 271, 273, 275, 277, 279, 281, 283, 285, 287, 289, 291

274

260, 262, 264, 266, 268, 270, 272, 274, 276, 279, 281, 283, 285, 287, 289, 291

Range 128

GSM 480

310

306, 308, 310, 312, 314, 316, 318, 320, 322, 324, 326, 328, 330, 332, 334, 336, 338

321

307, 309, 311, 313, 315, 317, 319, 321, 323, 326, 328, 330, 332, 334, 336, 338

Range 128

GSM 710

457

447, 454, 457, 463, 471, 479, 482 ,483 ,489, 496, 498, 500, 501, 502, 503, 506, 508

477

451, 455, 459, 461, 467, 468, 475, 477, 497, 498, 500, 501, 502, 503, 506, 508

Range 128

GSM 750

457

447, 454, 457, 463, 471, 479, 482 ,483 ,489, 496, 498, 500, 501, 502, 503, 506, 508

477

451, 455, 459, 461, 467, 468, 475, 477, 497, 498, 500, 501, 502, 503, 506, 508

Range 128

T-GSM 810

457

447, 454, 457, 463, 471, 479, 482 ,483 ,489, 496, 498, 500, 501, 502, 503, 506, 508

477

451, 455, 459, 461, 467, 468, 475, 477, 497, 498, 500, 501, 502, 503, 506, 508

Range 128

GSM 850

147

137, 144, 147, 153, 161, 169, 172, 173, 179, 186, 193, 200, 201, 202, 203, 235, 241

167

141, 145, 149, 151, 157, 158, 165, 167, 187, 193, 200, 201, 202, 203, 235, 241

Range 128

GSM 900

20

10, 17, 20, 26, 34, 42, 45, 46, 52, 59, 66, 73, 74, 75, 76, 108, 114

40

14, 18, 22, 24, 30, 31, 38, 40, 60, 66, 73, 74, 75, 76, 108, 114

Bitmap 0

DCS 1 800

747

737, 741, 747, 754, 759, 762, 766, 767, 773, 775, 779, 782, 791, 798, 829, 832, 844

764

739, 743, 746, 749, 756, 758, 761, 764, 771, 779, 782, 791, 798, 829, 832, 844

Range 256

PCS 1 900

647

637, 641, 647, 654, 659, 662, 666, 667, 673, 675, 679, 682, 691, 698, 729, 732, 744

664

639, 643, 646, 649, 656, 658, 661, 664, 671, 679, 682, 691, 698, 729, 732, 744

Range 256

For DCS 1 800, PCS 1 900 the BCCH ARFCNs shall be added to the default BA-List.

For all other bands the BCCH ARFCNs are already included in the default BA-List.

26.6.13.1 Dedicated assignment with starting time / successful case / time not elapsed

26.6.13.1.1 Conformance requirement

A Mobile Station receiving an ASSIGNMENT COMMAND message with a starting time and channel descriptions for both after and before the starting time, and ready to access before the indicated time has elapsed, shall perform the assignment on the channels as described for before the starting time and shall start using the new frequency parameters (frequencies and hopping sequence, or single frequency) in the correct time slot indicated by the starting time.

The Mobile Station shall accept the ASSIGNMENT COMMAND message for different message formatting, differing by the information elements used to describe frequency lists.

Reference(s)

3GPP TS 04.08 / 3GPP TS 44.018 subclauses 3.4.3.1 and 9.1.2.

26.6.13.1.2 Test purpose

To verify that the MS, after receiving an ASSIGNMENT COMMAND message with a starting time and channel descriptions both for before and after the starting time, and ready to access before the indicated time, performs correctly the assignment using the description for before the time, and eventually starts using the frequency parameters for after the time at the time indicated in the message.

26.6.13.1.3 Method of test

Initial condition(s)

System Simulator:

1 cell, CCCH_CONF set to 1 basic physical channel used for CCCH, not combined with SDCCHs.

Mobile Station:

The MS is in the "idle, updated" state, with a TMSI allocated.

Specific PICS statements

– MS supports only SDCCH (TSPC_AddInfo_SDCCHOnly)

– MS supports GSM HR (TSPC_AddInfo_Halfrate)

PIXIT statements

Foreseen final state of the MS

"Idle, updated", with TMSI allocated.

Test procedure

The System Simulator pages the MS and after the MS has responded with a CHANNEL REQUEST, the simulator assigns a hopping SDCCH. Then the SS sends an ASSIGNMENT COMMAND message allocating a channel (TCH/F, TCH/H or SDCCH, arbitrarily chosen among the channels supported), with a starting time and channel descriptions (hopping case) for both before and after the starting time, as detailed in the "specific message contents" clause. The indicated time is such that the Mobile Station is ready to access before that time. The Mobile Station then accesses the channel as described for before the starting time. The MS shall eventually, at the TDMA frame defined by the contents of the "Starting Time" information element of the ASSIGNMENT COMMAND message, use the new frequency parameters . The verification is performed at the RF burst level.

Test parameters:

T1 is set to T0+1000 (mod 42 432), where T0 is the frame number at which the first burst of the ASSIGNMENT COMMAND message is sent.

Maximum duration of test

45 s.

Expected sequence

Step

Direction

Message

Comments

1

SS -> MS

PAGING REQUEST TYPE 1

2

MS -> SS

CHANNEL REQUEST

3

SS -> MS

IMMEDIATE ASSIGNMENT

Hopping channel.

4

MS -> SS

PAGING RESPONSE

5

SS -> MS

ASSIGNMENT COMMAND

See specific message contents.

6

MS -> SS

ASSIGNMENT COMPLETE

Sent on the correct channel (before time parameters) after establishment of the main signalling link.

7

——–

Time T1

The SS checks that the MS is transmitting now on the correct frequencies (after time parameters) and that the transmission started in the correct frame.

8

SS -> MS

CHANNEL RELEASE

Specific message contents

ASSIGNMENT COMMAND

Information element

Value/remark

Channel Description, after time

Channel Type and TDMA offset

Chosen arbitrarily among that supported by the Mobile Station.

Timeslot Number

Chosen arbitrarily.

Training Sequence Code

Chosen arbitrarily.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily.

Power Command

Power level

Chosen arbitrarily.

Channel Mode

Mode

Signalling Only.

Mobile Allocation, after time

Chosen arbitrarily, at least one frequency. In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

Starting Time

T1

Channel Description, before time

Channel Type and TDMA offset

Same as after time.

Timeslot Number

Same as after time.

Training Sequence Code

Same as after time.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily, different from "after time".

Mobile Allocation, before time

Chosen arbitrarily, at least one frequency and different from "Mobile Allocation, after time". In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

26.6.13.2 Dedicated assignment with starting time / successful case / time elapsed

26.6.13.2.1 Conformance requirement

A Mobile Station receiving an ASSIGNMENT COMMAND message with a starting time and channel descriptions for both after and before the starting time, and ready to access after the indicated time has elapsed, shall perform the assignment on the channels as described for after the starting time.

The Mobile Station shall accept the ASSIGNMENT COMMAND message for different message formattings, differing by the information elements used to describe frequency lists.

Reference(s):

3GPP TS 04.08 / 3GPP TS 44.018 subclauses 3.4.3.1 and 9.1.2.

26.6.13.2.2 Test purpose

To verify that the MS, after receiving an ASSIGNMENT COMMAND message with a starting time and channel descriptions both for before and after the starting time, performs correctly the assignment using the frequency parameters for after the time if the indicated time has already elapsed when the Mobile Station is ready to transmit.

26.6.13.2.3 Method of test

Initial condition(s)

System Simulator:

1 cell, CCCH_CONF set to 1 basic physical channel used for CCCH, not combined with SDCCHs.

Mobile Station:

The MS is in the "idle, updated" state, with a TMSI allocated.

Specific PICS statements

– MS supports only SDCCH (TSPC_AddInfo_SDCCHOnly)

– MS supports GSM HR (TSPC_AddInfo_Halfrate)

PIXIT statements

Foreseen final state of the MS

"Idle, updated", with TMSI allocated.

Test procedure

The System Simulator pages the MS and after the MS has responded with a CHANNEL REQUEST, the simulator assigns a hopping SDCCH. Then the SS sends an ASSIGNMENT COMMAND message allocating a channel (TCH/F, TCH/H or SDCCH, arbitrarily chosen among the channels supported), with a starting time and channel descriptions (hopping case) for both before and after the starting time, as detailed in the "specific message contents" clause. The indicated time is such that the Mobile Station is ready to access only after that time. The Mobile Station then accesses the channel as described for after the starting time. The verification is performed at the RF burst level.

Test parameters:

T1 is set to T0+5 (mod 42 432), where T0 is the frame number at which the first burst of the ASSIGNMENT COMMAND message is sent.

Maximum duration of test

45 s.

Expected sequence

Step

Direction

Message

Comments

1

SS -> MS

PAGING REQUEST TYPE 1

2

MS -> SS

CHANNEL REQUEST

Hopping channel.

3

SS -> MS

IMMEDIATE ASSIGNMENT

4

MS -> SS

PAGING RESPONSE

5

SS -> MS

ASSIGNMENT COMMAND

See specific message contents.

6

MS -> SS

ASSIGNMENT COMPLETE

Sent on the correct channel (after time parameters) after establishment of the main signalling link.

7

SS -> MS

CHANNEL RELEASE

Specific message contents

ASSIGNMENT COMMAND

Information element

Value/remark

Channel Description, after time

Channel Type and TDMA offset

Chosen arbitrarily among that supported by the Mobile Station.

Timeslot Number

Chosen arbitrarily.

Training Sequence Code

Chosen arbitrarily.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily.

Power Command

Power level

Chosen arbitrarily.

Channel Mode

Mode

Signalling Only.

Mobile Allocation, after time

Chosen arbitrarily, at least one frequency. In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

Starting Time

T1

Channel Description, before time

Channel Type and TDMA offset

Same as after time.

Timeslot Number

Same as after time.

Training Sequence Code

Same as after time.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily, different from "after time".

Mobile Allocation, before time

Chosen arbitrarily, at least one frequency and different from "Mobile Allocation, after time". In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

26.6.13.3 Dedicated assignment with starting time and frequency redefinition / failure case / time not elapsed

26.6.13.3.1 Conformance requirement

An MS, after receiving a FREQUENCY REDEFINITION message, shall keep the provided information until the time is elapsed. The Mobile Station must accept an intervening dedicated assignment, and, in case of failure of this assignment resulting in a return to the old channel before the time indicated in the FREQUENCY REDEFINITION message, shall return on the old channel with the frequency parameters in use at the moment of the reception of the FREQUENCY REDEFINITION message, and shall eventually start using the new frequency parameters in the correct time slot indicated by the starting time of the FREQUENCY REDEFINITION message.

Reference(s):

3GPP TS 04.08 / 3GPP TS 44.018 subclauses 3.4.3 and 3.4.5.

26.6.13.3.2 Test purpose

To verify that the MS, after receiving a FREQUENCY REDEFINITION and then an ASSIGNMENT COMMAND message with a starting time and channel descriptions both for before and after the starting time, failing the assignment and returning on the old channel, and ready to access before the time indicated in the FREQUENCY REDEFINITION, resumes transmission on the channels used at the time of the reception of the FREQUENCY REDEFINITION message and eventually starts using the new frequency parameters at the time indicated in the FREQUENCY REDEFINITION message.

26.6.13.3.3 Method of test

Initial condition(s)

System Simulator:

1 cell, CCCH_CONF set to 1 basic physical channel used for CCCH, not combined with SDCCHs.

Mobile Station:

The MS is in the "idle, updated" state, with a TMSI allocated.

Specific PICS statements

– MS supports only SDCCH (TSPC_AddInfo_SDCCHOnly)

– MS supports GSM HR (TSPC_AddInfo_Halfrate)

PIXIT statements

Foreseen final state of the MS

"Idle, updated", with TMSI allocated.

Test procedure

The System Simulator pages the MS and after the MS has responded with a CHANNEL REQUEST, the simulator assigns allocating a hopping channel (TCH/F, TCH/H or SDCCH, arbitrarily chosen among the channels supported). Then the SS sends a FREQUENCY REDEFINITION message (starting time T1), which modifies the frequency parameters to be used by the MS. Then the SS sends an ASSIGNMENT COMMAND message, with a starting time (T2) and channel descriptions for both before and after the starting time. The channels and hopping sequences so allocated are distinct from those used and from those described by the FREQUENCY REDEFINITION message. The System Simulator does not activate the channels defined in the ASSIGNMENT COMMAND. The MS shall try to activate the new channel (this is not verified) and shall then reactivate the old channel and trigger the establishment of the main signalling link on the old channel. Then the MS shall send an ASSIGNMENT FAILURE message. Time T1 is chosen so it is reached only after the sending of the ASSIGNMENT FAILURE message. The MS shall eventually, at the TDMA frame defined by the contents of the "Starting Time" information element of the FREQUENCY REDEFINITION message, use the new frequency parameters. The verification is performed at the RF burst level.

Test parameters:

T1 is set to T0+5000 (mod 42 432), where T0 is the frame number at which the first burst of the FREQUENCY REDEFINITION message is sent.

T2 is set to T0+4000 (mod 42 432), where T0 is the frame number at which the first burst of the FREQUENCY REDEFINITION message is sent.

Maximum duration of test

180 s.

Expected sequence

Step

Direction

Message

Comments

1

SS -> MS

PAGING REQUEST TYPE 1

2

MS -> SS

CHANNEL REQUEST

3

SS -> MS

IMMEDIATE ASSIGNMENT

Hopping channel.

4

MS -> SS

PAGING RESPONSE

4A

SS -> MS

IDENTITY REQUEST

Identity type : IMSI

4B

MS -> SS

IDENTITY RESPONSE

The response is not checked by the SS

5

SS -> MS

FREQUENCY REDEFINITION

6

SS -> MS

ASSIGNMENT COMMAND

Hopping channel, type among possible, signalling mode.

7

MS -> SS

ASSIGNMENT FAILURE

Sent on the correct channel (original parameters) after establishment of the main signalling link.

8

——–

Time T1

The SS checks that the MS is transmitting now on the correct frequencies (parameters of the FREQUENCY REDEFINITION message) and that the transmissions started in the correct frame.

9

SS -> MS

CHANNEL RELEASE

Specific message contents

FREQUENCY REDEFINITION

Information element

Value/remark

Channel Description

Channel Type and TDMA offset

Same as in IMMEDIATE ASSIGNMENT

Timeslot Number

Same as in IMMEDIATE ASSIGNMENT

Training Sequence Code

Same as in IMMEDIATE ASSIGNMENT

Hopping

Yes

Hopping parameters

Chosen arbitrarily, different than those of the IMMEDIATE ASSIGNMENT message,

HSN same as in IMMEDIATE ASSIGNMENT.

Mobile Allocation

Chosen arbitrarily, at least two frequencies, different than those of the IMMEDIATE ASSIGNMENT message.

Starting Time

T1

ASSIGNMENT COMMAND:

Information element

Value/remark

Channel Description, after time

Channel Type and TDMA offset

Chosen arbitrarily among that supported by the Mobile Station.

Timeslot Number

Chosen arbitrarily.

Training Sequence Code

Chosen arbitrarily.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily.

Power Command

Power level

Chosen arbitrarily.

Channel Mode

Mode

Signalling Only.

Mobile Allocation, after time

Chosen arbitrarily, at least two frequency.

Starting Time

T2

Channel Description, before time

Channel Type and TDMA offset

Same as after time.

Timeslot Number

Same as after time.

Training Sequence Code

Same as after time.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily, different from "after time".

Mobile Allocation, before time

Chosen arbitrarily, at least two frequencies, different from "Mobile Allocation, after time".

26.6.13.4 Dedicated assignment with starting time and frequency redefinition / failure case / time elapsed

26.6.13.4.1 Conformance requirement

An MS, after receiving a FREQUENCY REDEFINITION message, shall keep the provided information until the time is elapsed. The Mobile Station must accept an intervening dedicated assignment, and, in case of failure of this assignment resulting in a return to the old channel after the time indicated in the FREQUENCY REDEFINITION message, shall return on the old channel with the frequency parameters indicated in the FREQUENCY REDEFINITION message.

Reference(s):

3GPP TS 04.08 / 3GPP TS 44.018 subclauses 3.4.3 and 3.4.5.

26.6.13.4.2 Test purpose

To verify that the MS, after receiving a FREQUENCY REDEFINITION and then an ASSIGNMENT COMMAND message with a starting time and channel descriptions both for before and after the starting time, failing the assignment and returning on the old channel, and ready to access after the time indicated in the FREQUENCY REDEFINITION, resumes transmission using the new frequency parameters indicated in the FREQUENCY REDEFINITION message.

26.6.13.4.3 Method of test

Initial condition(s)

System Simulator:

1 cell, CCCH_CONF set to 1 basic physical channel used for CCCH, not combined with SDCCHs.

Mobile Station:

The MS is in the "idle, updated" state, with a TMSI allocated.

Specific PICS statements

PIXIT statements

Foreseen final state of the MS

"Idle, updated", with TMSI allocated.

Test procedure

The System Simulator pages the MS and after the MS has responded with a CHANNEL REQUEST, the simulator assigns allocating a hopping channel (SDCCH). Then the SS sends a FREQUENCY REDEFINITION message (starting time T1), which modifies the frequency parameters to be used by the MS. Then the SS sends an ASSIGNMENT COMMAND message, with a starting time (T2) and channel descriptions for both before and after the starting time. Time T1 is chosen so it is reached after the sending of the ASSIGNMENT COMMAND message, but before the return on the old channel. The System Simulator does not activate the channels defined in the ASSIGNMENT COMMAND. The MS shall try to activate the new channel (this is not verified) and shall then reactivate the old channel with the new frequency parameters as indicated by the FREQUENCY REDEFINITION message, and trigger the establishment of the main signalling link on the old channel. Then the MS shall send an ASSIGNMENT FAILURE message. The verification is performed at the RF burst level.

Test parameters:

i.e. for SDCCH

T2 is set to T0+5000 (mod 42 432), where T0 is the frame number at which the first burst of the FREQUENCY REDEFINITION message is sent.

T1 is set to T0+214 (mod 42 432), where T0 is the frame number at which the first burst of the FREQUENCY REDEFINITION message is sent.

NOTE: T0 + 214 is calculated for a maximum execution time of:

FREQUENCY REDEFINITION using 1 L2 frame 51 frames

ASSIGNMENT COMMAND using 2 L2 frames 102 frames

+ 120 ms maximum time for a channel change 25 frames

+ some frames conention (here 36)

Maximum duration of test

180 s.

Expected sequence

Step

Direction

Message

Comments

1

SS -> MS

PAGING REQUEST TYPE 1

2

MS -> SS

CHANNEL REQUEST

3

SS -> MS

IMMEDIATE ASSIGNMENT

Hopping channel.

4

MS -> SS

PAGING RESPONSE

5

SS -> MS

FREQUENCY REDEFINITION

6

SS -> MS

ASSIGNMENT COMMAND

Hopping channel, type among possible, signalling mode.

7

MS -> SS

ASSIGNMENT FAILURE

Sent on the correct channel (parameters from the FREQUENCY REDEFINITION message) after establishment of the main signalling link.

8

SS -> MS

CHANNEL RELEASE

Specific message contents

FREQUENCY REDEFINITION

Information element

Value/remark

Channel Description

Channel Type and TDMA offset

Same as in IMMEDIATE ASSIGNMENT

Timeslot Number

Same as in IMMEDIATE ASSIGNMENT

Training Sequence Code

Same as in IMMEDIATE ASSIGNMENT

Hopping

Yes

Hopping parameters

Chosen arbitrarily, different than those of the IMMEDIATE ASSIGNMENT message.

Mobile Allocation

Chosen arbitrarily, at least two frequencies, different than those of the IMMEDIATE ASSIGNMENT message, HSN same as in IMMEDIATE ASSIGNMENT.

Starting Time

T1

ASSIGNMENT COMMAND

Information element

Value/remark

Channel Description, after time

Channel Type and TDMA offset

Chosen arbitrarily among that supported by the Mobile Station.

Timeslot Number

Chosen arbitrarily.

Training Sequence Code

Chosen arbitrarily.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily.

Power Command

Power level

Chosen arbitrarily.

Channel Mode

Mode

Signalling Only.

Mobile Allocation, after time

Chosen arbitrarily, at least two frequencies.

Starting Time

T2

Channel Description, before time

Channel Type and TDMA offset

Same as after time.

Timeslot Number

Same as after time.

Training Sequence Code

Same as after time.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily, different from "after time".

Mobile Allocation, before time

Chosen arbitrarily, at least two frequencies, different from "Mobile Allocation, after time".

26.6.13.5 Handover with starting time / successful case / time not elapsed

26.6.13.5.1 Conformance requirement

A Mobile Station receiving an HANDOVER COMMAND message with a starting time and channel descriptions for both after and before the starting time, and ready to access before the indicated time has elapsed, shall perform the handover on the channels as described for before the starting time and shall, if specified, use the parameters in the frequency list, MAIO and HSN, in the correct time slot indicated by the starting time.

The Mobile Station shall accept the HANDOVER COMMAND message for different message formatting, differing by the information elements used to describe frequency lists.

Reference(s):

3GPP TS 04.08 / 3GPP TS 44.018 subclauses 3.4.4.1 and 9.1.15.

26.6.13.5.2 Test purpose

To verify that the MS, after receiving a HANDOVER COMMAND message with a starting time and channel descriptions both for before and after the starting time, and ready to access before the indicated time, performs correctly the handover using the description for before the time, and then starts using the frequency parameters for after the time at the time indicated in the message.

26.6.13.5.3 Method of test

Initial condition(s)

System Simulator:

2 cells, CCCH_CONF set to 1 basic physical channel used for CCCH, not combined with SDCCHs.

Mobile Station:

The MS is in the "idle, updated" state, with a TMSI allocated.

Specific PICS statements

– MS supports only SDCCH (TSPC_AddInfo_SDCCHOnly)

– MS supports GSM HR (TSPC_AddInfo_Halfrate)

PIXIT statements

Foreseen final state of the MS

"Idle, updated", with TMSI allocated, and camped on cell B.

Test procedure

The System Simulator pages the MS and after the MS has responded with a CHANNEL REQUEST, the simulator assigns a hopping SDCCH. After the SS has received measurements concerning cell B, the SS sends a HANDOVER COMMAND message allocating a channel (TCH/F, TCH/H or SDCCH, arbitrarily chosen among the channels supported), with a starting time and channel descriptions (hopping case) for both before and after the starting time , as detailed in the "specific message contents" clause. The indicated time is such that the Mobile Station is ready to access before that time. The Mobile Station then accesses the channel as described for before the starting time. The MS shall eventually, at the TDMA frame defined by the contents of the "Starting Time" information element of the HANDOVER COMMAND message, use the new frequency parameters. The verification is performed at the RF burst level.

Test parameters:

T1 is set to T0+1000 (mod 42 432), where T0 is the frame number at which the first burst of the HANDOVER COMMAND message is sent.

Maximum duration of test

120 s.

Expected sequence

Step

Direction

Message

Comments

1

SS -> MS

PAGING REQUEST TYPE 1

2

MS -> SS

CHANNEL REQUEST

3

SS -> MS

IMMEDIATE ASSIGNMENT

Hopping channel.

4

MS -> SS

PAGING RESPONSE

5

SS -> MS

HANDOVER COMMAND

See specific message contents.

6

MS -> SS

HANDOVER ACCESS

Repeated on every burst of the uplink main DCCH (and optionally on the SACCH) until reception of PHYSICAL INFORMATION.

7

SS -> MS

PHYSICAL INFORMATION

8

MS -> SS

HANDOVER COMPLETE

Sent on the correct channel (before time parameters) after establishment of the main signalling link.

9

——–

Time T1

The SS checks that the MS is transmitting now on the correct frequencies (after time parameters) and that the transmissions started in the correct frame.

10

SS -> MS

CHANNEL RELEASE

Specific message contents

HANDOVER COMMAND:

Information element

Value/remark

Cell Description

As for cell B.

Channel Description, after time

Channel Type and TDMA offset

Chosen arbitrarily among that supported by the Mobile Station.

Timeslot Number

Chosen arbitrarily.

Training Sequence Code

Chosen arbitrarily.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily.

Power Command

Power level

Chosen arbitrarily.

Synchronization indication

Non synchronized.

Cell Channel Description

As for cell B.

Channel Mode

Mode

Signalling Only.

Mobile Allocation, after time

Chosen arbitrarily, at least one frequency. In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

Starting Time

T1

Channel Description, before time

Channel Type and TDMA offset

Same as after time.

Timeslot Number

Same as after time.

Training Sequence Code

Same as after time.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily, different from "after time".

Mobile Allocation, before time

Chosen arbitrarily, at least one frequency, different from "Mobile Allocation, after time". In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

26.6.13.6 Handover with starting time / successful case / time elapsed

26.6.13.6.1 Conformance requirement

A Mobile Station receiving a HANDOVER COMMAND message with a starting time and channel descriptions for both after and before the starting time, and ready to access after the indicated time has elapsed, shall perform the handover on the channels as described for after the starting time.

The Mobile Station shall accept the HANDOVER COMMAND message for different message formattings, differing by the information elements used to describe frequency lists.

Reference(s):

3GPP TS 04.08 / 3GPP TS 44.018 sub-clauses 3.4.4.1 and 9.1.15.

26.6.13.6.2 Test purpose:

To verify that the MS, after receiving a HANDOVER COMMAND message with a starting time and channel descriptions both for before and after the starting time, and ready to transmit after the indicated time, performs correctly the handover using the frequency parameters for after the time.

26.6.13.6.3 Method of test

Initial condition(s)

System Simulator:

2 cells, CCCH_CONF set to 1 basic physical channel used for CCCH, not combined with SDCCHs.

Mobile Station:

The MS is in the "idle, updated" state, with a TMSI allocated, and camped on cell A

Specific PICS statements

– MS supports only SDCCH (TSPC_AddInfo_SDCCHOnly)

– MS supports GSM HR (TSPC_AddInfo_Halfrate)

PIXIT statements

Foreseen final state of the MS

"Idle, updated", with TMSI allocated, and camped on cell B.

Test procedure

The System Simulator pages the MS and after the MS has responded with a CHANNEL REQUEST, the simulator assigns a hopping SDCCH. After the SS has received measurements concerning cell B, the SS sends a HANDOVER COMMAND message allocating a channel (TCH/F, TCH/H or SDCCH, arbitrarily chosen among the channels supported), with a starting time and channel descriptions (hopping case) for both before and after the starting time., as detailed in the "specific message contents" clause. The indicated time is such that the Mobile Station is ready to access only after that time. The Mobile Station then accesses the channel as described for after the starting time. The verification is performed at the RF burst level.

Test parameters:

T1 is set to T0+5 (mod 42 432), where T0 is the frame number at which the first burst of the HANDOVER COMMAND message is sent.

Maximum duration of test

120 s.

Expected sequence

Step

Direction

Message

Comments

1

SS -> MS

PAGING REQUEST TYPE 1

2

MS -> SS

CHANNEL REQUEST

3

SS -> MS

IMMEDIATE ASSIGNMENT

Hopping channel.

4

MS -> SS

PAGING RESPONSE

5

SS -> MS

HANDOVER COMMAND

See specific message contents.

6

MS -> SS

HANDOVER ACCESS

Repeated on every burst of the uplink main DCCH (and optionally on the SACCH) until reception of PHYSICAL INFORMATION.

7

SS -> MS

PHYSICAL INFORMATION

8

MS -> SS

HANDOVER COMPLETE

Sent on the correct channel (after time parameters) after establishment of the main signalling link.

9

SS -> MS

CHANNEL RELEASE

Specific message contents

HANDOVER COMMAND:

Information element

Value/remark

Cell Description

As for cell B.

Channel Description, after time

Channel Type and TDMA offset

Chosen arbitrarily among that supported by the Mobile Station.

Timeslot Number

Chosen arbitrarily.

Training Sequence Code

Chosen arbitrarily.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily.

Power Command

Power level

Chosen arbitrarily.

Synchronization indication

Non synchronized.

Cell Channel Description

As for cell B.

Channel Mode

Mode

Signalling Only.

Mobile Allocation, after time

Chosen arbitrarily, at least one frequency. In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

Starting Time

T1

Channel Description, before time

Channel Type and TDMA offset

Same as after time.

Timeslot Number

Same as after time.

Training Sequence Code

Same as after time.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily, different from "after time".

Mobile Allocation, before time

Chosen arbitrarily, at least one frequency and different from "Mobile Allocation, after time". In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

26.6.13.7 Handover with starting time and frequency redefinition / failure case / time not elapsed

26.6.13.7.1 Conformance requirement

An MS, after receiving a FREQUENCY REDEFINITION message, shall keep the provided information until the time is elapsed. The Mobile Station must accept an intervening handover, and, in case of failure of this handover resulting in a return to the old channel before the time indicated in the FREQUENCY REDEFINITION message, shall return on the old channel with the frequency parameters in use at the moment of the reception of the FREQUENCY REDEFINITION message, and shall eventually start using the new frequency parameters in the correct time slot indicated by the starting time of the FREQUENCY REDEFINITION message.

Reference(s):

3GPP TS 04.08 / 3GPP TS 44.018 subclauses 3.4.4 and 3.4.5.

26.6.13.7.2 Test purpose:

To verify that the MS, after receiving a FREQUENCY REDEFINITION and then a HANDOVER COMMAND message with a starting time and channel descriptions both for before and after the starting time, failing the handover, and ready to access on the old channel before the time indicated in the FREQUENCY REDEFINITION, resumes transmission on the channels used at the time of the reception of the FREQUENCY REDEFINITION message and eventually starts using the new frequency parameters at the time indicated in the FREQUENCY REDEFINITION message.

26.6.13.7.3 Method of test

Initial condition(s)

System Simulator:

2 cells, CCCH_CONF set to 1 basic physical channel used for CCCH, not combined with SDCCHs.

Mobile Station:

The MS is in the "idle, updated" state, with a TMSI allocated, and camped on cell A.

Specific PICS statements

– MS supports only SDCCH (TSPC_AddInfo_SDCCHOnly)

– MS supports GSM HR (TSPC_AddInfo_Halfrate)

PIXIT statements

Foreseen final state of the MS

"Idle, updated", with TMSI allocated, and camped on cell A.

Test procedure

The System Simulator pages the MS and after the MS has responded with a CHANNEL REQUEST, the simulator assigns allocating a hopping channel (TCH/F, TCH/H or SDCCH, arbitrarily chosen among the channels supported). Then the SS sends a FREQUENCY REDEFINITION message (starting time T1), which modifies the frequency parameters to be used by the MS. Then the SS sends a HANDOVER COMMAND message, with a starting time (T2) and channel descriptions for both before and after the starting time. The MS shall try to activate the new channel (this is not verified) and shall then reactivate the old channel and trigger the establishment of the main signalling link on the old channel. The System Simulator does not activate the channels defined in the HANDOVER COMMAND. Then the MS shall send a HANDOVER FAILURE message. Time T1 is chosen so it is reached only after the sending of the HANDOVER FAILURE message. The MS shall eventually, at the TDMA frame defined by the contents of the "Starting Time" information element of the FREQUENCY REDEFINITION message, use the new frequency parameters. The verification is performed at the RF burst level.

Test parameters:

T1 is set to T0+5000 (mod 42 432), where T0 is the frame number at which the first burst of the FREQUENCY REDEFINITION message is sent.

T2 is set to T0+4000 (mod 42 432), where T0 is the frame number at which the first burst of the FREQUENCY REDEFINITION message is sent.

Maximum duration of test

180 s.

Expected sequence

Step

Direction

Message

Comments

1

SS -> MS

PAGING REQUEST TYPE 1

2

MS -> SS

CHANNEL REQUEST

3

SS -> MS

IMMEDIATE ASSIGNMENT

Hopping channel.

4

MS -> SS

PAGING RESPONSE

5

SS -> MS

FREQUENCY REDEFINITION

6

SS -> MS

HANDOVER COMMAND

Hopping channel, type among possible, signalling mode.

7

MS -> SS

HANDOVER ACCESS

Not checked.

8

MS -> SS

HANDOVER FAILURE

Sent on the correct channel (original parameters) after establishment of the main signalling link.

9

——–

Time T1

The SS checks that the MS is transmitting now on the correct frequencies (parameters of the FREQUENCY REDEFINITION message) and that the transmissions started in the correct frame.

10

SS -> MS

CHANNEL RELEASE

Specific message contents

FREQUENCY REDEFINITION

Information element

Value/remark

Channel Description

Channel Type and TDMA offset

Same as in IMMEDIATE ASSIGNMENT

Timeslot Number

Same as in IMMEDIATE ASSIGNMENT

Training Sequence Code

Same as in IMMEDIATE ASSIGNMENT

Hopping

Yes

Hopping parameters

Chosen arbitrarily, different than those of the IMMEDIATE ASSIGNMENT message, HSN same as in IMMEDIATE ASSIGNMENT.

Mobile Allocation

Chosen arbitrarily, at least two frequencies, different than those of the IMMEDIATE ASSIGNMENT message.

Starting Time

T1

HANDOVER COMMAND:

Information element

Value/remark

Cell Description

As for cell B.

Channel Description, after time

Channel Type and TDMA offset

Chosen arbitrarily among that supported by the Mobile Station.

Timeslot Number

Chosen arbitrarily.

Training Sequence Code

Chosen arbitrarily.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily.

Power Command

Power level

Chosen arbitrarily.

Synchronization indication

Non synchronized.

Cell Channel Description

As for cell B.

Channel Mode

Mode

Signalling Only.

Mobile Allocation, after time

Chosen arbitrarily, at least one frequency. In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

Starting Time

T2

Channel Description, before time

Channel Type and TDMA offset

Same as after time.

Timeslot Number

Same as after time.

Training Sequence Code

Same as after time.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily, different from "after time".

Mobile Allocation, before time

Chosen arbitrarily, at least one frequency and different from "Mobile Allocation, after time". In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

26.6.13.8 Handover with starting time and frequency redefinition / failure case / time elapsed

26.6.13.8.1 Conformance requirement

An MS, after receiving a FREQUENCY REDEFINITION message, shall keep the provided information until the time is elapsed. The Mobile Station must accept an intervening handover, and, in case of failure of this handover resulting in a return to the old channel after the time indicated in the FREQUENCY REDEFINITION message, shall return on the old channel with the frequency parameters indicated in the FREQUENCY REDEFINITION message.

Reference(s):

3GPP TS 04.08 / 3GPP TS 44.018 subclauses 3.4.4 and 3.4.5.

26.6.13.8.2 Test purpose:

To verify that the MS, after receiving a FREQUENCY REDEFINITION and then a HANDOVER COMMAND message with a starting time and channel descriptions both for before and after the starting time, failing the handover and returning on the old channel, and ready to access after the time indicated in the FREQUENCY REDEFINITION, resumes transmission using the new frequency parameters indicated in the FREQUENCY REDEFINITION message.

26.6.13.8.3 Method of test

Initial condition(s)

System Simulator:

2 cells, CCCH_CONF set to 1 basic physical channel used for CCCH, not combined with SDCCHs.

Mobile Station:

The MS is in the "idle, updated" state, with a TMSI allocated, and camped on cell A.

Specific PICS statements

PIXIT statements

Foreseen final state of the MS

"Idle, updated", with TMSI allocated, and camped on cell A.

Test procedure

The System Simulator pages the MS and after the MS has responded with a CHANNEL REQUEST, the simulator assigns a hopping channel (SDCCH). Then the SS sends a FREQUENCY REDEFINITION message (starting time T1), which modifies the frequency parameters to be used by the MS. Then the SS sends a HANDOVER COMMAND message, with a starting time (T2) and channel descriptions for both before and after the starting time. Time T1 is chosen so it is reached after the sending of the HANDOVER COMMAND message, but before the return on the old channel. The System Simulator does not activate the channels defined in the HANDOVER COMMAND. The MS shall try to activate the new channel (this is not verified) and shall then reactivate the old channel with the new frequency parameters as indicated by the FREQUENCY REDEFINITION message, and trigger the establishment of the main signalling link on the old channel. Then the MS shall send a HANDOVER FAILURE message. The verification is performed at the RF burst level.

Test parameters:

i.e. for SDCCH

T2 is set to T0+5000 (mod 42 432), where T0 is the frame number at which the first burst of the FREQUENCY REDEFINITION message is sent.

T1 is set to T0+265(mod 42 432), where T0 is the frame number at which the first burst of the FREQUENCY REDEFINITION message is sent.

NOTE: T0 + 265 is calculated for a maximum execution time of:

FREQUENCY REDEFINITION using 1 L2 frame 51 frames

HANDOVER COMMAND using 3 L2 frames 153 frames

+ 120 ms maximum time for a channel change 25 frames

+ some frames contention (here 36)

Maximum duration of test

180 s.

Expected sequence

Step

Direction

Message

Comments

1

SS -> MS

PAGING REQUEST TYPE 1

2

MS -> SS

CHANNEL REQUEST

3

SS -> MS

IMMEDIATE ASSIGNMENT

Hopping channel.

4

MS -> SS

PAGING RESPONSE

5

SS -> MS

FREQUENCY REDEFINITION

6

SS -> MS

HANDOVER COMMAND

Hopping channel, type among possible, signalling mode.

7

MS -> SS

HANDOVER ACCESS

Not checked.

8

MS -> SS

HANDOVER FAILURE

Sent on the correct channel (parameters from the FREQUENCY REDEFINITION message) after establishment of the main signalling link.

9

SS -> MS

CHANNEL RELEASE

Specific message contents

FREQUENCY REDEFINITION

Information element

Value/remark

Channel Description

Channel Type and TDMA offset

Same as in IMMEDIATE ASSIGNMENT

Timeslot Number

Same as in IMMEDIATE ASSIGNMENT

Training Sequence Code

Same as in IMMEDIATE ASSIGNMENT

Hopping

Yes.

Hopping parameters

Chosen arbitrarily, different than those of the IMMEDIATE ASSIGNMENT message, HSN same as in IMMEDIATE ASSIGNMENT.

Mobile Allocation

Chosen arbitrarily, at least two frequencies, different than those of the IMMEDIATE ASSIGNMENT message

Starting Time

T1

HANDOVER COMMAND

Information element

Value/remark

Cell Description

As for cell B.

Channel Description, after time

Channel Type and TDMA offset

Chosen arbitrarily among that supported by the Mobile Station.

Timeslot Number

Chosen arbitrarily.

Training Sequence Code

Chosen arbitrarily.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily.

Power Command

Power level

Chosen arbitrarily.

Synchronization indication

Non synchronized.

Cell Channel Description

As for cell B.

Channel Mode

Mode

Signalling Only.

Mobile Allocation, after time

Chosen arbitrarily, at least one frequency. In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

Starting Time

T2

Channel Description, before time

Channel Type and TDMA offset

Same as after time.

Timeslot Number

Same as after time.

Training Sequence Code

Same as after time.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily, different from "after time".

Mobile Allocation, before time

Chosen arbitrarily, at least one frequency and different from "Mobile Allocation, after time". In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

26.6.13.9 Immediate assignment with starting time / successful case / time not elapsed

26.6.13.9.1 Conformance requirement

A Mobile Station receiving an IMMEDIATE ASSIGNMENT message with a starting time and channel descriptions for both after and before the starting time, and ready to access before the indicated time has elapsed, shall perform the assignment on the channels as described for before the starting time and shall start using the new frequencies and hopping sequence in the correct time slot when the MS is allocated a dedicated channel.

Reference(s):

3GPP TS 04.08 / 3GPP TS 44.018 subclauses 3.3.1.1.3.1 and 9.1.18.

26.6.13.9.2 Test purpose

To verify that the MS, after receiving an IMMEDIATE ASSIGNMENT message with a starting time and channel descriptions both for before and after the starting time, and ready to access before the indicated time, performs correctly the assignment using the description for before the time, and then starts using the frequency parameters for after the time at the time indicated in the message.

26.6.13.9.3 Method of test

Initial condition(s)

System Simulator:

1 cell, CCCH_CONF set to 1 basic physical channel used for CCCH, not combined with SDCCHs.

Mobile Station:

The MS is in the "idle, updated" state, with a TMSI allocated.

Specific PICS statements

– MS supports only SDCCH (TSPC_AddInfo_SDCCHOnly)

– MS supports GSM HR (TSPC_AddInfo_Halfrate)

PIXIT statements

Foreseen final state of the MS

"Idle, updated", with TMSI allocated.

Test procedure

The System Simulator pages the MS and after the MS has responded with a CHANNEL REQUEST, the simulator sends an IMMEDIATE ASSIGNMENT message allocating a hopping channel (TCH/F, TCH/H or SDCCH, arbitrarily chosen among the channels supported), with a starting time and channel descriptions for both before and after the starting time. The indicated time is such that the Mobile Station is ready to access before that time. The Mobile Station then accesses the channel as described for before the starting time. The MS shall eventually, at the TDMA frame defined by the contents of the "Starting Time" information element of the IMMEDIATE ASSIGNMENT message, use the new frequency parameters. The verification is performed at the RF burst level.

Test parameters:

T1 is chosen arbitrarily to be between T0+60 and T0+100 (mod 42 432), where T0 is the frame number at which the first burst of the IMMEDIATE ASSIGNMENT COMMAND message is sent.

Maximum duration of test

45 s.

Expected sequence

Step

Direction

Message

Comments

1

SS -> MS

PAGING REQUEST TYPE 1

2

MS -> SS

CHANNEL REQUEST

3

SS -> MS

IMMEDIATE ASSIGNMENT

See specific message contents.

4

MS -> SS

PAGING RESPONSE

5

——–

Time T1

The SS checks that the MS is transmitting now on the correct frequencies (after time parameters) and that the transmissions started in the correct frame.

6

SS -> MS

CHANNEL RELEASE

Specific message contents

IMMEDIATE ASSIGNMENT

Information element

Value/remark

Page Mode

Normal.

Channel Description

Channel Type and TDMA offset

Chosen arbitrarily among that supported by the Mobile Station.

Timeslot Number

Chosen arbitrarily.

Training Sequence Code

Chosen arbitrarily.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily.

Timing Advance

As needed.

Mobile Allocation (after time)

Chosen arbitrarily, at least one frequency. In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

Starting Time

T1

IA Rest Octet

MAIO

Chosen arbitrarily, different from "after time".

Mobile Allocation (before time)

Chosen arbitrarily, at least one frequency and different from "Mobile Allocation, after time". In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

26.6.13.10 Immediate assignment with starting time / successful case / time elapsed

26.6.13.10.1 Conformance requirement

A Mobile Station receiving an IMMEDIATE ASSIGNMENT message with a starting time and channel descriptions for both after and before the starting time, and ready to access after the indicated time has elapsed, shall perform the assignment on the channels as described for after the starting time.

Reference(s):

3GPP TS 04.08 / 3GPP TS 44.018 subclauses 3.3.1.1.3.1 and 9.1.18.

26.6.13.10.2 Test purpose

To verify that the MS, after receiving an IMMEDIATE ASSIGNMENT message with a starting time and channel descriptions both for before and after the starting time, performs correctly the assignment using the frequencies and hopping sequence for after the time if the indicated time has already elapsed when the Mobile Station is ready to transmit.

26.6.13.10.3 Method of test

Initial condition(s)

System Simulator:

1 cell, CCCH_CONF set to 1 basic physical channel used for CCCH, not combined with SDCCHs.

Mobile Station:

The MS is in the "idle, updated" state, with a TMSI allocated.

Specific PICS statements

– MS supports only SDCCH (TSPC_AddInfo_SDCCHOnly)

– MS supports GSM HR (TSPC_AddInfo_Halfrate)

PIXIT statements

Foreseen final state of the MS

"Idle, updated", with TMSI allocated.

Test procedure

The System Simulator pages the MS and after the MS has responded with a CHANNEL REQUEST, the simulator sends an IMMEDIATE ASSIGNMENT message allocating a hopping channel (TCH/F, TCH/H or SDCCH, arbitrarily chosen among the channels supported), with a starting time and channel descriptions for both before and after the starting time. The indicated time is such that the Mobile Station is ready to access only after that time. The Mobile Station then accesses the channel as described for after the starting time. The verification is performed at the RF burst level.

Test parameters:

T1 is set to T0+5 (mod 42 432), where T0 is the frame number at which the first burst of the IMMEDIATE ASSIGNMENT COMMAND message is sent.

Maximum duration of test

45 s

Expected sequence

Step

Direction

Message

Comments

1

SS -> MS

PAGING REQUEST TYPE 1

2

MS -> SS

CHANNEL REQUEST

3

SS -> MS

IMMEDIATE ASSIGNMENT

See specific message contents.

4

MS -> SS

PAGING RESPONSE

The SS checks that the MS is transmitting now on the correct frequencies (after time parameters).

5

SS -> MS

CHANNEL RELEASE

Specific message contents

IMMEDIATE ASSIGNMENT:

Information element

Value/remark

Page Mode

Normal.

Channel Description

Channel Type and TDMA offset

Chosen arbitrarily among that supported by the Mobile Station.

Timeslot Number

Chosen arbitrarily.

Training Sequence Code

Chosen arbitrarily.

Hopping

Yes.

Hopping parameters

Chosen arbitrarily.

Timing Advance

As needed.

Mobile Allocation (after time)

Chosen arbitrarily, at least one frequency. In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.

Starting Time

T1

IA Rest Octet

MAIO

Chosen arbitrarily, different from "after time".

Mobile Allocation (before time)

Chosen arbitrarily, at least one frequency and different from "Mobile Allocation, after time". In case of an MA with just one frequency, the frequency should be different from the BCCH carrier.