20 Cell selection and reselection

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

In the following paragraphs some explanatory text is given concerning the nature of the tests in this clause and the general behaviour of the SS is described.

Since the conformance requirements of most of the tests in this clause cannot be tested explicitly, testing is done implicitly by testing the MS behaviour from its responses to the SS.

The SS transmits one BCCH carrier per cell as indicated in the initial conditions for each test. These are referred to as carrier 1, carrier 2, etc. Each of these cell control channels are non-combined with SDCCHs. For tests in section 20.1 to 20.21, it is assumed that the SS can simultaneously transmit seven BCCH carriers and monitor three random access channels. For all other tests, unless explicitly stated otherwise, it is assumed that the SS can simultaneously transmit 7 BCCH or PBCCH carriers and monitor all RACH and PRACH channels for Cell Selection Testing and all adjacent RACH and PRACH channels for Cell Reselection. For multiband tests it is assumed that at least one of the BCCH carriers and one of the monitored random access channels is in a different frequency band from the others. In some cases, a test is performed in multiple stages in order that the requirements can be tested within the above constraints.

For any MS all the carriers are in its supported band(s) of operation. For an E-GSM mobile station at least one of the carriers is in the extension band and one of the carriers is in the primary band. Note: For an MS supporting Stored List Cell Selection it is necessary to ensure that the SIM does not contain any of the ARFCN’s used by each individual Test, otherwise the Test Purpose will not be met as the MS will apply different rules compared to Normal Cell Selection. This can be achieved by either editing the SIM card or initially updating the MS in a cell with no BA in the list. This must apply to all tests in section 20.

Unless otherwise stated in the method of test, in all of the tests of this clause:

– The SS is continuously paging the MS on all carriers at the start of the test and does not respond to RACH requests from the MS. Where a test specifies that the MS is not paged on a particular carrier, only idle paging is transmitted according to 3GPP TS 04.08 / 3GPP TS 44.018, subclause 3.2.2.2.

– The default values of the system information data fields given in table 20.1 are used.

– The SIM is in the idle updated state in the default location area with a TMSI assigned at the beginning of each test.

– The ARFCNs used for the carriers in each test are chosen from those in table 20.1 with adjacent carriers separated by a minimum of three channels.

The absolute accuracy of the MS signal level measurements is assumed to be ±6 dB. A difference of at least 8 dB is allowed for cases of discrimination between C1 or C2 values and 0.

The relative accuracy of the MS signal level measurements is assumed to be ±3 dB for the signal levels used in the tests of this clause, except for subclause 20.20, where the relative accuracy is assumed to be ±5 dB if the measurements are on different frequency bands. A difference of at least 5 dB is allowed for cases of discrimination between C1 or C2 values on different carriers, except for subclause 20.20, where a difference of at least 10 dB is allowed if the measurements are on different frequency bands.

NOTE 1: The accuracy of MS signal level measurements is specified in 3GPP TS 05.08. For all of the tests in this clause, the signal levels used are greater than 1 dB above reference sensitivity level.

NOTE 2: The tolerance on timers specified in 3GPP TS 05.08 is ±10 % except for PENALTY_TIME where it is ±2 s. In the tests of this clause, the test requirements include these tolerances. Consequently, the times stated in the test requirement sometimes differ from the corresponding timer in the conformance requirement.

Where pulsed signals are specified, the SS tolerance on pulse width is ±2 % and the SS tolerance on power level ±1 dB.

Table 20.1: Default values of the system information fields

Parameter

3GPP TS 04.08 / 3GPP TS 44.018 reference

Abbr.

Normal Setting

Cell channel description

10.5.2.1

Any values

MAX retrans

10.5.2.29

1

TX-integer

10.5.2.29

Any value

CELL_BAR_QUALIFY

10.5.2.35

CBQ

0

CELL_BAR_ACCESS

10.5.2.29

CBA

0 (not barred)

AC CN

10.5.2.29

AC

All 0

RE

10.5.2.29

RE

0 (re-establishment allowed)

NCC

10.5.2.2

NCC

Any value

Cell Identity

10.5.1.1

Any value

MCC, MNC

10.5.1.3

PLMN

MS Home PLMN

LAC

10.5.1.3

LAC

1111 (Hex)

ATT

10.5.2.11

0 (Attach/Detach not allowed)

BS_AG_BLKS_RES

10.5.2.11

Any values

CCCH_CONF

10.5.2.11

1 basic physical channel used for CCCH, non-combined with SDCCHs.

T3212

10.5.2.11

Any values

BS_PA_MFRMS

10.5.2.11

BPM

5 frames

Cell Options

10.5.2.3

Any values

CELL_RESELECT_HYSTERESIS

10.5.2.4

CRH

4 dB

MS_TXPWR_MAX_CCH

10.5.2.4

MTMC

Max. output power of MS

RXLEV_ACCESS_MIN

10.5.2.4

RAM

‑90 dBm

CELL_RESELECT_OFFSET

10.5.2.35

CRO

0

TEMPORARY_OFFSET

10.5.2.35

TO

0

PENALTY_TIME

10.5.2.35

PT

0

Power Offset

10.5.2.35

PO

0

BA ARFCN

10.5.2.22

BA

All 0 except values in Table 20.1a or 20.1b

Table 20.1a: ARFCNs for Single Band Tests

Band

ARFCNs

broadcast in SYSTEM INFORMATION type

GSM 450

259, 263, 269, 275, 279, 283, 287, 292

SI2

GSM 480

306, 310, 316, 322, 326, 330, 334, 339

SI2

GSM 710

441, 446, 452, 455, 461, 462, 466, 470, 477, 485, 493, 511

SI2

GSM 750

441, 446, 452, 455, 461, 462, 466, 470, 477, 485, 493, 511

SI2

T-GSM 810

441, 446, 452, 455, 461, 462, 466, 470, 477, 485, 493, 511

SI2

GSM 850

130, 136, 145, 152, 168, 170, 176, 177, 181, 185, 189, 193, 197, 207,219, 251

SI2

GSM 900

both P-GSM and E-GSM ARFCNs are broadcast:

GSM: 3, 9, 18, 25, 41, 43, 49, 50, 54, 58, 62, 66, 70, 80, 92, 124

SI2

E-GSM: 985, 989, 995, 1010, 1014

SI2bis

DCS 1800

512, 543, 568, 589, 602, 641, 662, 683, 696, 711, 732, 754, 794, 851, 870, 871, 872, 884

SI2

PCS1900

512, 543, 568, 589, 602, 629, 641, 653, 662, 683, 696, 711, 727, 732, 754, 777, 794, 809

SI2

Table 20.1b: ARFCNs for Multiband Tests

Band

ARFCNs

broadcast in SYSTEM INFORMATION type

GSM 450

259, 263, 269, 275, 279, 283, 287, 292

SI2 (GSM 450 cell) & SI2ter (other band cell)

GSM 480

306, 310, 316, 322, 326, 330, 334, 339

SI2 (GSM 480 cell) & SI2ter (other band cell)

GSM 710

441, 452, 461, 477, 493, 511

SI2 (GSM 710 cell) & SI2ter (other band cell)

GSM 750

441, 452, 461, 477, 493, 511

SI2 (GSM 750 cell) & SI2ter (other band cell)

T-GSM 810

441, 452, 461, 477, 493, 511

SI2 (T-GSM 810 cell) & SI2ter (other band cell)

GSM 850

136, 152, 170, 177, 185, 193, 207, 251

SI2 (GSM 850 cell) & SI2ter (other band cell)

GSM 900

3, 18, 41, 49, 62, 70, 92, 124

SI2 (GSM 900 cell) & SI2ter (other band cell)

DCS 1800

512, 568, 602, 662, 696, 732, 794, 870

SI2 (DCS 1800 cell) & SI2ter (other band cell)

PCS 1900

512, 568, 602, 641, 662, 696, 727, 754

SI2 (PCS 1900 cell) & SI2ter (other band cell)

Table 20.1c: MNC values

Band

MNC value

GSM400, GSM900, DCS1800

01

Otherwise

011

For GSM 710and T-GSM 810 Bands ARFCNs are defined using Dynamic Mapping: Information about dynamic mapping is provided by System Information type 15 or Packet System Information type 8 if PBCCH exists, and optionally by System Information type 14. The required parameters are as defined in Table 20.1d.

Table 20.1d: ARFCNs for GSM710, T-GSM 810

Parameter

3GPP TS 04.08 / 3GPP TS 44.018 reference

Abbr.

Normal Setting

GSM_Band (4 bit field)

10.5.2.11b

0110 – GSM 710

Or

0111 – T-GSM 810

ARFCN_FIRST

10.5.2.11b

1

BAND_OFFSET

10.5.2.11b

438

ARFCN_RANGE

10.5.2.11b

90

Unless otherwise specified all tests in clauses 20.1 to 20.15 are applicable for all MSs supporting the bands identified in Table 20.1a