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