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51.010-1
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15.7.3 Test purpose
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1) To verify that the MS uses a TA value of 0 for the access burst.
2) To verify that the MS meets the absolute receive/transmit delay requirement for the access burst.
3) To verify that the MS meets the absolute receive/transmit delay requirement for normal bursts.
4) To verify that the MS implements a new timing advance value as signalled on the SACCH as in the requirement.
5) To verify that the MS sends the TA used on the uplink SACCH as in the requirement.
6) To verify that a multislot capable MS operates in accordance with the conformance requirement 2.
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51.010-1
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15.7.4 Method of test
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Initial conditions
The SS sends "MAXRETRANS = 7" and "TX-INTEGER = 3" on the BCCH.
The MS is brought into MM state "idle, updated".
Procedure
a) The SS pages the MS after 10 s.
b) The SS does not respond to the first 7 CHANNEL REQUEST messages from the MS. The SS responds to the 8th CHANNEL REQUEST from the MS on the RACH by sending an IMMEDIATE ASSIGNMENT message, with TA set to 0.
c) The SS continues to set up a call according to the generic call set up procedure for ECSD. In the case of a multislot cabable MS, the call is set up according to the generic call set up procedure for multislot configuration for ECSD and the SS commands the MS to operate with maximum number of both uplink and downlink timeslots according to the multislot class of the MS. In the case of class A ECSD MS, 8-PSK modulated channels shall be used in the downlink. In the case of class B ECSD MS, GMSK modulated channels shall be used in the downlink and 8-PSK modulated channels in the uplink.
d) The SS signals the TA values 10, 20, 30, 40, 50, 60, 63, and one random value other than these values to the MS in consecutive SACCH blocks.
For GSM 400 MS, the SS signals the TA values 35, 70, 105, 140, 175, 210, 219, and one random value other than these values to the MS in consecutive SACCH blocks.
In the case of a multislot capable MS, the TA values defined above are signalled on the main channel of the multislot configuration, and on the subchannels TA values different from those ones are signalled.
The SS determines the TA value set in the L1 header on the uplink SACCH for each timing advance.
The SS measures the absolute delay for all bursts.
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51.010-1
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15.7.5 Test requirement
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The measured receive/transmit delay for each burst shall equal the following nominal values with an absolute tolerance of ±1 symbol period:
access bursts: 3 timeslots (= 45/26 ms).
normal bursts: 3 timeslots (= 45/26 ms) minus the last TA value received from the SS.
The MS shall use the new timing advance at the first TDMA frame belonging to the next reporting period after the SACCH frame containing the new TA value.
The TA field in the uplink SACCH L1 header shall contain to the most recently ordered TA value.
The multislot capable MS shall use a common TA value for all uplink channels, derived from the main downlink channel of the multislot configuration. The TA value in the uplink SACCH L1 header shall be that one.
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51.010-1
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15.8 EGPRS timing advance and absolute delay
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51.010-1
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15.8.1 Definition
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Timing advance (TA) is a time offset in symbols as sent to the MS by the BS. The MS shall advance its transmissions to the BS by the timing advance relative to 3 timeslots behind transmissions received from the BS.
The absolute delay is the delay between a common burst reference point within the received and the transmitted RF burst.
The timing advance procedure is used to derive the correct value for timing advance that the MS has to use for the uplink transmission of radio blocks.
The timing advance procedure comprises two parts:
- initial timing advance estimation;
- continuous timing advance update.
NOTE: For normal bursts for GMSK modulation, the common burst reference point is defined to be the transition from bit 13 to bit 14 of the midamble. For normal bursts for 8-PSK modulation, the common burst reference point is defined to be the transition from symbol 13 to symbol 14 of the midamble. For an access burst it is defined to be the transition from bit 48 to bit 49 of the burst.
Equivalently the delay can be referenced to the modulator input vs. the demodulator output or to the differential encoder input vs. the differential decoder output, provided the measured delay is corrected for the additional delays in the signal path.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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15.8.2 Conformance requirement
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1) The random access burst transmission, measured at the MS antenna, shall use a TA of 0, and therefore be 3 timeslots behind the transmissions received from the BTS, with an absolute tolerance of ±1 symbol period.
3GPP TS 05.10, subclauses 6.4 and 6.6.
2) The normal burst transmission, measured at the MS antenna, shall be 3 timeslots - TA behind the transmissions received from the BTS, with an absolute tolerance of ± 1 symbol period. In case of a multislot configuration, the MS shall use a common timebase for transmission of all channels. In this case, the MS may optionally use a timeslot length of 157 symbol periods on timeslots TN = 0 and 4, and 156 symbol periods on timeslots with TN = 1, 2, 3, 5, 6 and 7, rather than 156.25 symbol periods on all timeslots. In case of a packet switched multislot configuration the common timebase shall be derived from all timeslots monitored by the MS. In this case, the MS may assume that the BTS uses a timeslot length of 156.25 symbol periods on all timeslots
3GPP TS 05.10, subclause 6.4.
3) For an MS in Packet transfer mode, except MS class A in dedicated mode:
Within the packet resource assignments (see 3GPP TS 04.08 / 3GPP TS 24.008 and 3GPP TS 04.60) for uplink or downlink messages the MS gets the Timing Advance Index (TAI). The MS shall send access bursts on the subchannel defined by the TAI on the PTCCH using TA=0.
3GPP TS 05.10, subclause 6.5.2.
4) For an MS in Packet transfer mode, except MS class A in dedicated mode:
When the MS receives the updated value of TA from the BTS on the downlink PTCCH, it shall always use the last received TA value for the uplink transmission.
3GPP TS 05.10, subclause 6.5.2.
5) For an MS in Packet transfer mode, except MS class A in dedicated mode:
Upon initiation of the continuous timing advance procedure the MS shall disregard the TA values on PTCCH until it has sent its first access burst on PTCCH.
3GPP TS 05.10, subclause 6.5.2.
6) For an MS in Packet transfer mode, except MS class A in dedicated mode:
The network may request the MS to send 4 access bursts to calculate a new TA value. For this purpose the network sets the system information element CONTROL_ACK_TYPE to indicate that the MS is to respond with a PACKET_CONTROL_ACKNOWLEDGEMENT consisting of 4 access bursts (see 3GPP TS 04.60), and sends a PACKET_POLLING_REQUEST to the MS. In this case, the MS shall transmit 4 consecutive access bursts on the assigned resources.
3GPP TS 05.10, subclause 6.5.2.
7) For an MS in Packet transfer mode, except MS class A in dedicated mode:
If the MS receives a resource assignment or power control/timing advance message (see 3GPP TS 04.60), the MS shall use the included TA value until it receives a new value on PTCCH.
3GPP TS 05.10, subclause 6.5.2.
8) For an MS in Packet transfer mode, except MS class A in dedicated mode:
If the MS receive a packet resource assignment (see 3GPP TS 04.08 / 3GPP TS 24.008 and 3GPP TS 04.60) indicating to the MS that it can only start the uplink transmission on PDTCH after the timing advance is obtained by the continuous update procedure, the MS shall start the packet transfer after the TA value is received on the PTCCH.
3GPP TS 05.10, subclause 6.5.2.
9) For an MS in Packet transfer mode, except MS class A in dedicated mode:
If the MS receives a packet resource assignment (see 3GPP TS 04.08 / 3GPP TS 24.008 and 3GPP TS 04.60) indicating that a default timing advance shall be used, the MS shall not use the continuous timing advance procedure.
3GPP TS 05.10, subclause 6.5.2.
10) For an MS in Packet transfer mode, except MS class A in dedicated mode:
When the MS receives a new or updated TA value on the downlink PTCCH or downlink PACCH, the MS shall be ready to transmit using the new TA value within 40 ms of the end of the last timeslot of the message block containing the new TA value.
3GPP TS 05.10, subclause 6.9.
NOTE: A MS class A in dedicated mode has to follow the procedures described in 3GPP TS 05.10 subclause 6.5.1.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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15.8.3 Test purpose
|
1) To verify that the MS uses a TA value of 0 for the access burst.
2) To verify that the MS meets the absolute receive/transmit delay requirement for the access burst.
3) To verify that the MS meets the absolute receive/transmit delay requirement for normal bursts in accordance with the conformance requirement 2.
4) 4) To verify that an MS in Packet transfer mode, except for an MS Class A in dedicated mode, when it receives an updated value of TA from the BTS on the downlink PTCCH, uses the last received TA value for the uplink transmission, respecting conformance requirement 10.
5) To verify that an MS in Packet transfer mode, except for an MS Class A in dedicated mode, upon initiation of the continuous timing advance procedure shall disregard the TA values on PTCCH until it has sent its first access burst on PTCCH.
6) To verify that an MS in Packet transfer mode, except for an MS Class A in dedicated mode, if it receives a packet polling message as defined in conformance requirement 6, sends 4 access bursts on a network assigned uplink resource.
7) To verify that an MS in Packet transfer mode, except for an MS Class A in dedicated mode, if it receives a resource assignment or power control/timing advance message (see 3GPP TS 04.60), uses the included TA value until it receives a new value on PTCCH.
8) To verify that an MS in Packet transfer mode, except for an MS Class A in dedicated mode, if it receives a packet resource assignment (see 3GPP TS 04.08 / 3GPP TS 24.008 and 3GPP TS 04.60) indicating to the MS that it can only start the uplink transmission on PDTCH after the timing advance is obtained by the continuous update procedure, it starts the packet transfer after the TA value is received on the PTCCH respecting conformance requirement 10.
9) To verify that an MS in Packet transfer mode, except for an MS Class A in dedicated mode, if it receives a packet resource assignment (see 3GPP TS 04.08 / 3GPP TS 24.008 and 3GPP TS 04.60) indicating that a default timing advance shall be used, does not use the continuous timing advance procedure.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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15.8.4 Method of test
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Initial conditions
The SS sets the System Infomation parameter CONTROL_ACK_TYPE to "0".
The MS is GPRS Attached and PDP context activated.
NOTE:
EGPRS PACKET CHANNEL REQUEST shall be used in the following cases
a. If Release of EGPRS supported is Release 4 or above.
b. If Support of EGPRS Packet Access enhancement is True for a R99 MS.
CHANNEL REQUEST shall be used if support of EGPRS Packet Access enhancement is False for a R99 MS.
Procedure
a) The SS pages MS on the PCH. The SS measures the receive/transmit delay for each burst. MS may send EGPRS PACKET CHANNEL REQUEST or CHANNEL REQUEST (See note). The SS then completes the uplink TBF to receive the Page response.
b) The MS is made to send an EGPRS Packet Channel Request / Channel Request by triggering the MS to send a minimum of 6000 octets. The SS transmits a packet resource assignment to the MS with a valid TAI and EGPRS channel coding command as MCS-5. The SS transmits a TA value on the PTCCH for this TAI which is neither 0 nor 1. The SS measures the receive/transmit delay for each burst.
c) The SS transmits a number of different TA values on the PTCCH for the TAI assigned to the MS. The SS also changes the TA values on the PTCCH for the other TAI in such a way that there is no correlation between TA values. The SS measures the receive/transmit delay for each burst.
d) The SS transmits a new TA value, different by more than 1 from the previously transmitted one, in such a way that the MS can only correctly receive the last (4th) occurrence of the new TA value. The SS measures the receive/transmit delay for each burst. The uplink TBF is terminated.
e) The MS is made to send an EGPRS Packet Channel Request / Channel Request by triggering the MS to send a minimum of 6000 octets. The SS sends a Packet Polling addressing the MS with its TFI. The SS measures the receive/transmit delay for each of the 4 access.
f) The SS sends a Packet Uplink Assignment to the MS with valid TIMING_ADVANCE_INDEX, TIMING_ADVANCE_TIMESLOT_NUMBER, TIMING_ADVANCE_VALUE and EGPRS channel coding command as MCS-5. As part of the subsequent continuous timing advance update procedure, the SS sends a timing advance value on the downlink PTCCH for the MS, that is different from the TIMING_ADVANCE_VALUE in the Packet Uplink Assignment. The SS measures the receive/transmit delay for several bursts,once before the MS should be using the updated TA and once after the MS should be using the updated TA, using the conditions defined in Conformance requirement 10).
g) The MS is brought back to Packet idle mode. The SS sends a Packet Downlink Assignment to the MS with no valid Timing Advance included.The SS polls the MS by sending an RLC Block coded with MCS-5. The SS waits 2 seconds and then sends a PACKET POWER CONTROL/TIMING ADVANCE message with valid timing advance information. The SS sends further RLC Blocks. The SS measures the receive/transmit delay for several bursts.
h) The MS is made to send an EGPRS Packet Channel Request / Channel Request by triggering the MS to send a minimum of 6000 octets. The SS sends a Packet Uplink Assignment to the MS with TIMING_ADVANCE_VALUE set to a value different from the last one ordered on the PTCCH, EGPRS channel coding command as MCS-5 and the TIMING_ADVANCE_INDEX and TIMING_ADVANCE_TIMESLOT_NUMBER fields not present. The SS continues to transmit TA values on the PTCCH. These shall be different from the TA value TIMING_ADVANCE_VALUE in the Packet Uplink Assignment. The SS measures the receive/transmit delay for several bursts once after the transmission of the Packet Uplink Assignment, and once after the SS transmits the new TA using the continuous update procedure for the TAI chosen in step g), using the conditions defined in Conformance requirement 10).
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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15.8.4.3 Test requirement
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The measured receive/transmit delay for each burst shall equal the following nominal values with an absolute tolerance of ±1 symbol period.
access bursts: 3 timeslots (= 45/26 ms).
normal bursts: 3 timeslots (= 45/26 ms) minus the last TA value received from the SS.
In step a) the MS shall transmit an access burst on the RACH.
In step b) the MS shall send access bursts on the PTCCH on the subchannel defined by the TAI with TA = 0.
In step c) the MS shall use the updated TA values.
In step d) the MS shall use the updated TA value.
In step e) the MS shall transmit 4 access bursts.
In step f) the MS shall use the TIMING_ADVANCE_VALUE in the Packet Uplink Assignment first, and change to the Timing Advance value transmitted on the downlink PTCCH in response to the sending of an access burst on the uplink PTCCH.
In step g) the MS shall not transmit Normal Bursts on the allocated resources before it received a Timing Advance value via a PACKET POWER CONTROL/TIMING ADVANCE message on the downlink PACCH.
In step h) the last TA value received from the SS is the TIMING_ADVANCE_VALUE in the Packet Uplink Assignment.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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15.9 Timing Advance whilst in DTM
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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15.9.1 Conformance requirements
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A MS class A in dedicated or dual transfer mode shall the procedures described in sub-clause 6.5.1.
When the MS receives a new value of TA from the BTS on the SACCH, it shall implement the new value of TA at the first TDMA frame belonging to the next reporting period (as defined in 3GPP TS 05.08), after the SACCH frame containing the new TA value. On channels used for a voice group call, the TA value sent by the BTS applies only to an MS currently allocated the uplink.
The MS shall signal the used TA to the BTS on the SACCH.
A mobile station in DTM shall disable the timing advance features for the GPRS side:
• the mobile station shall inhibit the transmission of timing advance access bursts;
• the mobile station shall ignore the reception of GPRS timing advance messages, if any.
References
3GPP TS 05.10/45.010 sub-clauses 6.5.2, 6.5.1
3GPP TS 03.55 sub-clauses 5.1
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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15.9.2 Test purpose
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To verify that the MS disregards any PS timing advance information that it receives and only uses CS TA information.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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15.9.3 Method of test
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Initial Conditions
System Simulator:
1 cell, DTM supported.
Mobile Station:
The MS is in the active state (U10) of a call.
The MS is GPRS idle with a P-TMSI allocated and the PDP context 1 activated.
Specific PICS Statement(s):
- DTM/GPRS Multislot Class 5 (TSPC_DTM_GPRS_Multislot_Class_5)
- DTM/GPRS Multislot Class 9 (TSPC_DTM_GPRS_Multislot_Class_9)
PIXIT Statements:
-
Test Procedure
The MS is triggered to initiate packet uplink transfer data and sends a DTM REQUEST message to the SS. On receiving the DTM REQUEST message, requesting uplink resources, the SS assigns the MS PS resources in a timeslot adjoining the CS resource. The SS accomplishes the resource assignment by passing a PACKET ASSIGNMENT message to the MS. Once the SS has verified that the MS is correctly sending RLC data blocks to the SS, the SS starts to vary the TA ordered by both PS and CS signalling.
The SS signals the TA values 10, 20, 30, 40, 50, 60, 63, and one random value other than these values to the MS in consecutive SACCH blocks.
The SS then signals the TA values of 10, 20, 30, 40, 50 on the PS domain to the MS.
The SS then sends a PACKET POWER / TIMING ADVANCE message to the MS, ordering the MS to change the TA to a random value (different from previous value) and verifies that the MS does not change the TA of transmissions.
Test requirement
The measured receive/transmit delay for each burst shall equal the following nominal values with an absolute tolerance of ±1 bit period:
normal bursts: 3 timeslots (= 45/26 ms) minus the last TA value received from the SS.
The MS shall use the new CS TA at the first opportunity, but shall not change the TA of the MS for any TA received in signalling on the PTCCH
Maximum Duration of Test
5 minutes
Expected Sequence
Step
Direction
Message
Comments
1
MS
MS in state U10 of Call on Timeslot N (chosen arbitrarily) with Channel Type = TCH/F.
2
MS
Trigger the MS to initiate an uplink packet transfer containing 3k octets.
3
MS->SS
DTM REQUEST
4
SS->MS
PACKET ASSIGNMENT
Assigning uplink resources on timeslot (N 1) MOD 8.
Including timing advance index (arbitrarily chosen)
5
MS<->SS
{ Uplink data transfer }
Macro – 1k octets
5A
The SS schedules the TA values 10, 20, 30, 40, 50, 60, 63, and one random value other than these values to the MS in consecutive SACCH blocks.
The SS then schedules the TA values of 10, 20, 30, 40, 50 on the downlink PTCCH.
After scheduling each TA value on PTCCH/D, assign a valid USF to receive uplink RLC data block.
6
SS->MS
PACKET POWER / TIMING ADVANCE
7
MS->SS
RLC UPLINK DATA
8
MS->SS
RLC UPLINK DATA
9
SS
Verifies that MS has not implemented the TA ordered in the PACKET POWER / TIMING ADVANCE message.
10
{ Uplink Data Transfer }
Macro - Completion of the Data.
Specific Message Contents:
PACKET POWER CONTROL/TIMING ADVANCE message:
MESSAGE_TYPE
000101
Global Packet Timing Advance
- {0|1<TIMING_ADVANCE_VALUE>}
1
- TIMING_ADVANCE_VALUE
Random value (different from previous value)
- {0|1<TIMING_ADVANCE_INDEX> <TIMING_ADVANCE_TIMESLOT_NUMBER>}
0 (no TIMING_ADVANCE_INDEX)
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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16 Reception time tracking speed
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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16.1 Definition
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Reception time tracking speed is the speed at which the MS adapts its transmit time to a change in the timing of the received signal.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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16.2 Conformance requirement
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If the MS determines that the timing difference with signals received from the BS exceeds 2 s, the MS shall adjust its timebase in steps of 1/4 bit period, in intervals not less than 1 s and not greater than 2 s until the timing difference is less than 1/2 bit period at 3 dB below reference sensitivity and 3 dB less carrier to interference ratio than the reference interference ratios.
3GPP TS 05.10, subclauses 6 and 6.2.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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16.3 Test purpose
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1) To verify that the MS adapts its transmit time to the timing of the received signal as in the conformance requirement under TUHigh propagation conditions at 2 dB above reference sensitivity level( ).
2) To verify that the MS adapts its transmit time to the timing of the received signal as in the conformance requirement under RA propagation conditions at 2 dB above reference sensitivity level( ).
NOTE: This test is performed at a level higher than in the conformance requirement because of test implementation problems.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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16.4 Method of test
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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16.4.1 Initial conditions
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The SS sets up a call according to the generic call set up procedure on a channel in the Mid ARFCN range.
The SS sets TUHigh.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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16.4.2 Procedure
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a) After 10 s the SS sets the input signal level to 2 dB above reference sensitivity level( ).
b) For the last second before step c) the SS takes an average receive/transmit delay of all bursts in that 1 s.
c) The SS increases the delay of the transmitted signal to the MS by a 2 bit step (about 7,4 s) and keeps this delay for 20 s.
d) The SS measures the absolute receive/transmit delay for each burst.
e) The SS increases the input signal level to 5 dB above reference sensitivity level( ) and sets propagation condition RA.
f) The SS repeats steps a) to d).
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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16.5 Test requirement
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The MS shall adjust the timing of its transmit burst back to the correct receive/transmit timing delay. All burst timings shall be within the shaded part of figure 16.1.
Figure 16.1
NOTE: t = 0 is the time at which the SS makes the transmission timing step change in c) of subclause 16.4.2.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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17 Access times during handover
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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17.1 Intra cell channel change
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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17.1.1 Definition
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The access times are:
- the time between either receipt by the MS of the last timeslot of the message block containing an ASSIGNMENT COMMAND or HANDOVER COMMAND and the time it has to be ready to transmit on the new channel; and
- the time between the end of the last complete speech or data frame or message block sent on the old channel and the time the MS is ready to transmit on the new channel.
For E-GSM 900, R-GSM 900 and ER-GSM 900 MS this test is performed in the P-GSM band (see table 3.3 P‑GSM 900ARFCN ranges).
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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17.1.2 Conformance requirement
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1) When for an intracell channel change, the MS receives an ASSIGNMENT COMMAND command or a HANDOVER COMMAND it shall be ready to transmit on the new channel within 120 ms of the last timeslot of the message block containing the command.
3GPP TS 05.10, subclause 6.8.
2) For an intracell channel change, the time between the end of the last complete speech or data frame or message block sent on the old channel and the time the MS is ready to transmit on the new channel shall be less than 20 ms.
3GPP TS 05.10, subclause 6.8.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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17.1.3 Test purpose
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1) To verify that the MS, when commanded to perform an intracell channel change to a new ARFCN and/or a new timeslot number within the same cell, if the starting time is not used in the ASSIGNMENT COMMAND, is ready to transmit on the new channel within 120 ms of the last timeslot containing the ASSIGNMENT COMMAND.
2) To verify that the MS, when commanded to perform an intracell channel change to a new ARFCN and/or a new timeslot number within the same cell, if the starting time is not used in the ASSIGNMENT COMMAND, is ready to transmit on the new channel within 20 ms of the last complete speech/data frame or message block sent on the old channel.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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17.1.4 Method of test
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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17.1.4.1 Initial conditions
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The SS sets up a call according to the generic call set up procedure on a channel in the Low ARFCN range on timeslot 1.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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17.1.4.2 Procedure
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a) The SS sends an ASSIGNMENT COMMAND to the MS allocating a channel in the high ARFCN range on timeslot 2, and with a power command of 7. These old and new carriers have a relative frequency tolerance of 0, and a relative timing tolerance of 1/4 bit.
b) The SS, after it has sent the ASSIGNMENT COMMAND, measures the reception time of bursts received on the new channel, and the time at which transmission ceases on the old channel.
Figure 17-1: Access time - Intra cell channel change (Test Requirement 1)
Figure 17-2: Access time - Intra cell channel change (Test Requirement 2)
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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17.1.5 Test requirement
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1) The MS shall transmit its first burst on the new channel within 131 ms from the last timeslot of the message block containing the ASSIGNMENT COMMAND.
NOTE 1: The requirement time of 120 ms, at which the MS shall be ready to transmit, will expire right at the beginning of a new downlink burst on timeslot 2, which will be the last burst of a traffic channel block, The following frame could be an IDLE frame and the MS would then transmit in the next frame. Taking into account the 3 timeslot shift between up and downlink, and the 1/4 bit relative timing tolerance between the carriers, means that the MS may first transmit on the new channel after 131 ms (120 ms + 2 frames + 3 timeslots + 1/4 bit period). See figure 17-1.
2) The MS shall transmit its first burst on the new channel within 27,7 ms from the last complete speech or data frame or message block sent on the old channel.
NOTE 2: The requirement time of 20 ms, at which the MS shall be ready to transmit, will expire at just over 4 frames after the sending of the last bit on the old channel. The next frame could be an IDLE frame and the MS would then transmit in the following frame. This equates to 6 frames so in the worst case, including the 1/4 bit relative timing tolerance between the carriers, the MS may take 27,7 ms before starting transmissions on the new channel.
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683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
|
17.2 Inter cell handover
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
17.2.1 Definition
|
The access times are:
- the time between receipt by the MS of the last timeslot of the message block containing a HANDOVER COMMAND and the time it has to be ready to transmit on the new channel; and
- the time between the end of the last complete speech or data frame or message block sent on the old channel and the time the MS is ready to transmit on the new channel.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
17.2.2 Conformance requirement
|
1) When the MS receives a HANDOVER COMMAND it shall be ready to transmit on the new channel within 120 ms of the last timeslot of the message block containing the HANDOVER COMMAND.
3GPP TS 05.10, subclause 6.8
2) The time between the end of the last complete speech or data frame or message block sent on the old channel and the time the MS is ready to transmit on the new channel shall be less than 20 ms.
3GPP TS 05.10, subclause 6.8.
3) When the MS receives a new TA value in response to a handover access burst, the MS shall be ready to transmit using the new TA value within 40 ms of the end of the last timeslot of the message block containing the new TA.
3GPP TS 05.10, subclause 6.9.
4) The MS shall use a TA value of 0 for the handover access bursts sent.
3GPP TS 05.10, subclause 6.6.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
17.2.3 Test purpose
|
1) To verify that the MS, when commanded to handover on a new ARFCN and a new timeslot number in a new, not synchronized cell, starting time not used in the HANDOVER COMMAND, will be ready to transmit on the new channel within 120 ms of the last timeslot containing the HANDOVER COMMAND.
2) To verify that the MS, when commanded to handover on a new ARFCN and a new timeslot number in a new, not synchronized cell, starting time not used in the HANDOVER COMMAND, will be ready to transmit on the new channel within 20 ms of the last complete speech or data frame or message block sent on the old channel.
3) To verify that the MS, when it receives a new TA value in response to a handover access burst, is ready to transmit using the new TA value within 50 (40+10) ms of the end of the last timeslot of the message block containing the new TA value.
Note: The required response time of 40 ms is increased by 10 ms to take the time into account when the next opportunity to transmit the updated values occurs, also considering a possible idle frame.
4) To verify that the MS uses a TA value of 0 for the handover access burst sent.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
17.2.4 Method of test
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
17.2.4.1 Initial conditions
|
The SS establishes two non-synchronized cells, A and B, under ideal radio conditions. A is the old cell and B is the target for the handover.
The SS uses two traffic channels with the following properties:
Band
Cell A
Cell B
TN
ARFCN
Offset (Hz)
TN
ARFCN
Offset (Hz)
GSM 450
2
259
+240
0
293
-240
GSM 480
2
306
+260
0
340
-260
GSM 710
2
438
+244
0
511
-244
GSM 750
2
438
+250
0
511
-250
T-GSM 810
2
438
+244
0
511
-244
GSM 850
2
128
+252
0
251
-252
GSM 900
2
1
+267
0
124
-267
DCS 1800
2
512
+320
0
885
-320
PCS 1900
2
512
+366
0
810
-366
NOTE 1: In each band, Cell A uses the lowest and Cell B the highest allowed carrier. For GSM710 and T‑GSM810 the ARFCNs above are based on the values below (see 3GPP TS 45.005, 3GPP TS 44.018) to achieve the same result.
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
NOTE 2: The offset is representing worst cases:
for Doppler shift due to a velocity chosen according to the band:
Band
Velocity (kph)
GSM 450, GSM 480
500
GSM 710, GSM 750
300
T-GSM 810, GSM 850, GSM 900
250
DCS 1800, PCS 1900
130
and a frequency inaccuracy of 0,05 ppm.
The BCCH for the two cells have the following differences in timing:
Timer T1 50;
Timer T2 15;
Timer T3 40;
1/4 bit number 17;
Timeslots 2.
The SS sets up a call according to the generic call set up procedure on the channel in cell A.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
17.2.4.2 Procedure
|
a) The SS sends a HANDOVER COMMAND on the main DCCH on cell A ordering the MS to go to the channel in cell B. The power command is set to 7.
b) After the SS has sent HANDOVER COMMAND it measures the reception time of bursts received on the new channel and the time at which transmission ceases on the old channel.
c) The SS also measures the absolute transmit/receive delay for the access bursts on the new channel.
d) The SS sends the PHYSICAL INFORMATION with TA set to 50. The SS then measures the reception time and absolute delay of the bursts transmitted on the new cell.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
17.2.5 Test requirement
|
1) The MS shall transmit its first burst on cell B within 142,6 ms from the last timeslot of the message block containing the HANDOVER COMMAND.
NOTE 1: The requirement time of 120 ms, at which the MS shall be ready to transmit, will expire right at the end of the last burst of a downlink traffic channel block on the old channel. Due to the two timeslot difference in cell timing, the two timeslots difference in the channel allocation and the 15 frames difference in multiframe timing, this point could occur 2,5 frames before the end of the last burst of a downlink traffic channel block on the new channel. The following frame could be an IDLE frame and the MS would then transmit in the next frame. Taking into account the three timeslot shift between up and downlink, and the 17 1/4 bit periods timing difference between the two carriers, means that the MS may first transmits on the new channel after 142,6 ms (120 ms + 2,5 frames + 2 frames + 3 timeslots + 17 1/4 bit periods).
2) The MS shall transmit its first burst on cell B within 39,2 ms from the last complete speech or data frame or message block sent on cell A.
NOTE 2: The requirement time of 20 ms, at which the MS shall be ready to transmit, will expire at just over 4 frames after the sending of the last bit on the old channel. Due to the two timeslot difference in cell timing, the two timeslots difference in the channel allocation and the 15 frames difference in multiframe timing, this point could occur 2 frames before the end of the last burst of an uplink traffic channel block on the new channel. The following frame could be an IDLE frame and the MS would then transmit in the next frame. This equates to 8,5 frames so in the worst case the MS may take 39,2 ms between cessation of transmission on the old channel and transmission beginning on the new channel.
3) The MS shall transmit using the TA value in the PHYSICAL INFORMATIONwithin 50 ms from the end of the last timeslot of the message block containing the new TA value.
4) The measured absolute delay for the access bursts in steps c) and d) shall equal 3 timeslots (=45/26 ms), with an absolute tolerance of ±1 bit.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18 Temporary reception gaps
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.1 Temporary reception gaps, single slot
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.1.1 Definition
|
A temporary reception gap is a limited period of time in which the RF reception is interrupted. During this gap the MS shall maintain the frequency and timing of its transmission within specifications.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.1.2 Conformance requirement
|
1) During a temporary total loss of signal, of up to 64 SACCH block periods, the MS shall update its timebase with a clock which is accurate to within 0,2 ppm, or to within 0,2 ppm of the signals previously received from the BTS. The MS shall use the same frequency source for both RF frequency generation and clocking the timebase.
3GPP TS 05.10, subclauses 6.1 and 6.7.
2) The MS shall time its transmissions to the BTS according to signals received from the BTS. The MS transmissions to the BTS, measured at the MS antenna, shall be 3 timeslots - TA behind the transmissions received from the BTS, where TA is the last timing advance received from the current serving BTS.
3GPP TS 05.10, subclause 6.4.
3) During a temporary total loss of signal, of up to 64 SACCH block periods, the MS shall update its timebase with a clock which is accurate to within 0,2 ppm, or to within 0,2 ppm of the signals previously received from the BTS.
3GPP TS 05.10, subclause 6.7.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.1.3 Test purpose
|
1) To verify that, during a temporary total loss of signal of up to 63 SACCH block periods, the MS carrier frequency is accurate to within 0,2 ppm of the signals previously received from the BTS.
2) To verify that, the MS transmissions to the BTS, measured at the MS antenna, is 3 timeslots behind the transmissions received from the BTS, with a tolerance of ±1 bit period.
3) To verify that, during a temporary total loss of signal, of up to 63 SACCH block periods, the MS transmission timing may have drifted resulting in an error not greater than ±6,048 µs (0,2 ppm of 63 SACCH blocks).
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.1.4 Method of test
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.1.4.1 Initial conditions
|
The SS signals RADIO_LINK_TIMEOUT = 64 and "DTX OFF" on the BCCH.
The MS is brought into MM state "idle, updated".
After 10 s, the SS continues to set up a call according to the generic call set up procedure.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.1.4.2 Procedure
|
a) The SS, in a TDMA frame immediately following the transmission of a complete SACCH block, removes the downlink signal for 63 SACCH blocks.
NOTE: This gives the maximum temporary reception gap.
b) The SS measures the frequency and timing of the MS transmissions immediately before, and at least 5 times at approximately equally spaced intervals during the gap, one of these measurements being at the end of the gap.
c) The SS resumes transmission for a period sufficient to allow the MS reception of 1 SACCH block.
d) The SS again removes downlink transmission for a period equal to at least 3 SACCH blocks. The SS measures the frequency and timing of the MS transmissions immediately before and during this second reception gap.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.1.5 Test requirement
|
1) The MS carrier frequency shall be accurate to within 0,2 ppm compared to signals received from the SS.
2) At the start of the first reception gap the MS receive/transmit delay timing shall be 3 timeslots ± 1 bit.
NOTE: The SS determines the error from the first measurement of MS transmission frequency and timing.
3) During the second reception gap the MS shall maintain transmission for a period up to but not exceeding 3 SACCH blocks.
4) During the first, maximum, reception gap the MS transmission timing may have drifted resulting in an error of not greater than ±6,048 s.
NOTE: The SS determines the error at the start of the reception gap from the first measurement of MS transmission frequency and timing.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.2 Temporary reception gaps in HSCSD multislot configurations
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.2.1 Definition
|
A temporary reception gap is a limited period of time in which the RF reception is interrupted. During this gap the MS shall maintain the frequency and timing of its transmission within specifications.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.2.2 Conformance requirement
|
1) During a temporary total loss of signal, of up to 64 SACCH block periods, the MS shall update its timebase with a clock which is accurate to within 0,2 ppm, or to within 0,2 ppm of the signals previously received from the BTS. The MS shall use the same frequency source for both RF frequency generation and clocking the timebase.
3GPP TS 05.10, subclauses 6.7 and 6.1.
2) The MS shall time its transmissions to the BTS according to signals received from the BTS. The MS transmissions to the BTS, measured at the MS antenna, shall be 3 timeslots - TA behind the transmissions received from the BTS, where TA is the last timing advance received from the current serving BTS.
3GPP TS 05.10, subclause 6.4.
3) During a temporary total loss of signal, of up to 64 SACCH block periods, the MS shall update its timebase with a clock which is accurate to within 0,2 ppm, or to within 0,2 ppm of the signals previously received from the BTS.
3GPP TS 05.10, subclause 6.7.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.2.3 Test purpose
|
1) To verify that, during a temporary total loss of signal of up to 63 SACCH block periods on the main multislot channel, the MS carrier frequency is accurate to within 0,2 ppm of the signals previously received from the BTS.
2) To verify that, the MS transmissions to the BTS, measured at the MS antenna, is 3 timeslots behind the transmissions received from the BTS, with a tolerance of ±1 bit period.
3) To verify that, during a temporary total loss of signal, of up to 63 SACCH block periods on the main multislot channel, the MS transmission timing may have drifted resulting in an error not greater than ± 6,048 µs (0,2 ppm of 63 SACCH blocks).
4) To verify that, during a temporary loss of more than 64 SACCH block periods on other than the main channel in symmetric configuration, the MS meet the requirements 1, 2 and 3.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.2.4 Method of test
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.2.4.1 Initial conditions
|
The SS signals RADIO_LINK_TIMEOUT = 64 and "DTX OFF" on the BCCH.
The MS is brought into MM state "idle, updated".
After 10 s, the SS continues to set up a call according to the generic call set up procedure for multislot HSCSD.
The SS commands the MS to operate in a highest possible asymmetric configuration, with a maximum number of downlink timeslots.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.2.4.2 Procedure
|
a) The SS, in a TDMA frame immediately following the transmission of a complete SACCH block, removes the downlink signal for 63 SACCH blocks of the main channel.
NOTE: This gives the maximum temporary reception gap.
b) The SS measures the frequency and timing of the MS transmissions immediately before, and at least 5 times at approximately equally spaced intervals during the gap, one of these measurements being at the end of the gap.
c) The SS resumes transmission for a period sufficient to allow the MS reception of 1 SACCH block.
d) The SS again removes downlink transmission for a period equal to at least 3 SACCH blocks of the main channel. The SS measures the frequency and timing of the MS transmissions immediately before and during this second reception gap.
e) SS signals RADIO_LINK_TIMEOUT=64 and commands the MS to operate in a highest possible symmetric multislot configuration, with a maximum number of uplink timeslots.
f) For a symmetric multislot configuration steps a) and b) are repeated with the exception that a 69 SACCH blocks are removed from a channel other than the main channel.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
18.2.5 Test requirement
|
1) The MS carrier frequency shall be accurate to within 0,2 ppm compared to signals received from the SS.
2) The receive/transmit delay timing shall be 3 timeslots ± 1 bit.
3) During the second reception gap the MS shall maintain transmission for a period up to but not exceeding 3 SACCH blocks.
4) During the first, maximum, reception gap the MS transmission timing may have drifted resulting in an error of not greater than ±6,048 s.
5) During the last reception gap, the MS shall maintain transmission.
NOTE: The SS determines the error at the start of the reception gap from the first measurement of MS transmission frequency and timing.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19 Channel release after unrecoverable errors
|
NOTE: It is not possible to explicitly verify the correct functioning of all aspects of the radio link failure algorithm in the MS. Therefore 3 tests are used to implicitly verify correct implementation.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.1 Channel release after unrecoverable errors - 1
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.1.1 Definition
|
Channel release after unrecoverable errors is a procedure to abort the call if the radio link has been severely corrupted for some time, according to a link failure criterion.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.1.2 Conformance requirement
|
1) If the MS is unable to decode a SACCH message, the radio link counter S is decreased by 1. In the case of a successful reception of a SACCH message S is increased by 2. In any case S shall not exceed the value of RADIO_LINK_TIMEOUT. If S reaches 0 a radio link failure shall be declared.
3GPP TS 05.08, subclause 5.2.
2) The MS shall continue transmitting as normal on the uplink until S reaches 0.
3GPP TS 05.08, subclause 5.2.
3) The algorithm shall start after the assignment of a dedicated channel and S shall be initialized to RADIO_LINK_TIMEOUT.
3GPP TS 05.08, subclause 5.2.
4) (Re-)initialization and start of the algorithm shall be done whenever the MS switches to a new channel (this includes the old channel in assignment and handover failure cases), at the latest when the main signalling link (see 3GPP TS 04.08 / 3GPP TS 44.018) has been established.
3GPP TS 05.08, subclause 5.2.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.1.3 Test purpose
|
1) To verify correct handling of the radio link counter S.
2) To verify that the MS that is transmitting continues to transmit as normal on the uplink until S reaches 0.
3) To verify that the algorithm starts after the assignment of a dedicated channel, with S initialized to RADIO_LINK_TIMEOUT.
4) To verify that the MS declares RADIO_LINK_FAILURE, and clears the RR connection when S = 0.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.1.4 Method of test
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.1.4.1 Initial conditions
|
The SS sends a default value for the parameter RADIO_LINK_TIMEOUT on the BCCH. CALL RE-ESTABLISHMENT is not allowed.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.1.4.2 Procedure
|
a) A MS terminated call is set up according to the generic call set up procedure. The SS sends a randomly choosen value N for the parameter RADIO_LINK_TIMEOUT on SACCH (System Information Type 6). This must be different than that sent on the BCCH.
b) The SS sends 32 error free SACCH messages, followed by N SACCH messages that contain unrecoverable errors, and then continuously sends error free SACCH messages.
NOTE: The SS shall continue sending error free SACCH messages for a time that allows the MS to release the RR connection.
c) The SS repeats steps a) to b).
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.1.5 Test requirement
|
After receiving the N SACCH messages with unrecoverable errors, the MS shall abort the RR-connection, i.e. there is no more MS activity on the SACCH channel.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.2 Channel release after unrecoverable errors - 2
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.2.1 Definition
|
Channel release after unrecoverable errors is a procedure to abort the call if the radio link has been severely corrupted for some time, according to a link failure criterion.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.2.2 Conformance requirement
|
1) If the MS is unable to decode a SACCH message, the radio link counter S is decreased by 1. In the case of a successful reception of a SACCH message S is increased by 2. In any case S shall not exceed the value of RADIO_LINK_TIMEOUT. If S reaches 0 a radio link failure shall be declared.
3GPP TS 05.08, subclause 5.2.
2) The MS shall continue transmitting as normal on the uplink until S reaches 0.
3GPP TS 05.08, subclause 5.2.
3) The algorithm shall start after the assignment of a dedicated channel and S shall be initialized to RADIO_LINK_TIMEOUT.
3GPP TS 05.08, subclause 5.2.
4) (Re-)initialization and start of the algorithm shall be done whenever the MS switches to a new channel (this includes the old channel in assignment and handover failure cases), at the latest when the main signalling link (see 3GPP TS 04.08 / 3GPP TS 44.018) has been established.
3GPP TS 05.08, subclause 5.2.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.2.3 Test purpose
|
1) To verify correct handling of the radio link counter S.
2) To verify that the MS that is transmitting continues to transmit as normal on the uplink until S reaches 0.
3) To verify that the algorithm starts after the assignment of a dedicated channel, with S initialized to RADIO_LINK_TIMEOUT.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.2.4 Method of test
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.2.4.1 Initial conditions
|
The SS sends a default value for the parameter RADIO_LINK_TIMEOUT on the BCCH. CALL RE-ESTABLISHMENT is not allowed.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.2.4.2 Procedure
|
a) A MS terminated call is set up according to the generic call set up procedure. The SS sends a randomly choosen value N for the parameter RADIO_LINK_TIMEOUT on SACCH (System Information Type 6). This must be different than that sent on the BCCH.
b) The SS sends 2 SACCH messages with unrecoverable errors followed by one error free SACCH message. This step is repeated 64 times.
c) The SS sets N to a different but randomly chosen value, and broadcasts this on the BCCH. The SS repeats steps a) to b).
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.2.5 Test requirement
|
The MS shall not abort the RR-connection.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.3 Channel release after unrecoverable errors - 3
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.3.1 Definition
|
Channel release after unrecoverable errors is a procedure to abort the call if the radio link has been severely corrupted for some time, according to a link failure criterion.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.3.2 Conformance requirements
|
1) If the MS is unable to decode a SACCH message, the radio link counter S is decreased by 1. In the case of a successful reception of a SACCH message S is increased by 2. In any case S shall not exceed the value of RADIO_LINK_TIMEOUT. If S reaches 0 a radio link failure shall be declared.
3GPP TS 05.08, subclause 5.2.
2) The MS shall continue transmitting as normal on the uplink until S reaches 0.
3GPP TS 05.08, subclause 5.2.
3) The algorithm shall start after the assignment of a dedicated channel and S shall be initialized to RADIO_LINK_TIMEOUT.
3GPP TS 05.08, subclause 5.2.
4) (Re-)initialization and start of the algorithm shall be done whenever the MS switches to a new channel (this includes the old channel in assignment and handover failure cases), at the latest when the main signalling link (see 3GPP TS 04.08 / 3GPP TS 44.018) has been established.
3GPP TS 05.08, subclause 5.2.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.3.3 Test purpose
|
1) To verify correct handling of the radio link counter S.
2) To verify that the MS that is transmitting continues to transmit as normal on the uplink until S reaches 0.
3) To verify that the algorithm starts after the assignment of a dedicated channel, with S initialized to RADIO_LINK_TIMEOUT.
4) To verify that the MS declares RADIO_LINK_FAILURE, and clears the RR connection when S = 0.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.3.4 Method of test
| |
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.3.4.1 Initial conditions
|
The SS sends a default value for the parameter RADIO_LINK_TIMEOUT on the BCCH. CALL RE_ESTABLISHMENT is not allowed.
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.3.4.2 Procedure
|
a) A MS terminated call is set up according to the generic call set up procedure. The SS sends a randomly choosen value N for the parameter RADIO_LINK_TIMEOUT on SACCH (System Information Type 6) . This must be different than that sent on the BCCH.
b) The SS sends 32 error free SACCH messages, followed by 3 SACCH messages with unrecoverable errors, and the sends 1 error free SACCH message. This step is repeated N - 2 times.
c) The SS shall continuously send error free SACCH messages.
NOTE: The SS shall continue sending error free SACCH messages for a time that allows the MS to release the RR connection.
d) The SS repeats steps a) to c).
|
683b5b8a98f7b1390ddd5516ea9247a2
|
51.010-1
|
19.3.5 Test requirement
|
After receiving the 3 (N - 2) erroneous SACCH messages the MS shall abort the RR-connection, i.e. there is no more activity on the SACCH channel.
|
683b5b8a98f7b1390ddd5516ea9247a2
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51.010-1
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20 Cell selection and reselection
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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
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51.010-1
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20.1 Cell selection
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51.010-1
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20.1.1 Definition
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Cell selection is a process in which a MS, whenever a new PLMN is selected, attempts to find a suitable cell of that PLMN to camp on. Two methods of searching for a suitable cell are possible, normal cell selection and stored list cell selection. The process ensures that the MS is camped on a cell from which it can reliably decode downlink data and with which it has a high probability of communications on the uplink. Once the MS is camped on a cell, access to the network is allowed.
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51.010-1
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20.1.2 Conformance requirement
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1. The MS shall be able to select the correct (fourth strongest) cell and be able to respond to paging on that cell within 30 s of switch on, when the three strongest cells are not suitable. This assumes a valid SIM, with PIN disabled and ideal radio conditions; 3GPP TS 05.08, subclause 6.1.
2. There are various requirements that a cell must satisfy before an MS can perform normal camping on it:
2.1 (i) It should be a cell of the selected PLMN
2.2 (ii) It should not be "barred" (see subclause 3.5.1)
2.3 (iv) The radio path loss between MS and BTS must be below a threshold set by the PLMN operator. This is estimated as shown in subclause 3.6.
3GPP TS 03.22, subclause 3.2.1.
NOTE: Criteria (iii) is not applicable for Cell Selection.
3. Initially the MS looks for a cell which satisfies these 4 constraints ("suitable cell") by checking cells in descending order of received signal strength. If a suitable cell is found, the MS camps on it; 3GPP TS 03.22, subclause 3.2.1.
4. The MS shall be able to calculate correctly the path loss criterion parameter C1, used for cell selection and reselection; 3GPP TS 05.08, subclause 6.4.
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51.010-1
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20.1.3 Test purpose
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1. To verify that the MS meets conformance requirement 1.
2. To verify that:
2.1 The MS does not select a cell of a PLMN which is not the selected PLMN.
2.2 The MS does not select a cell which is "barred".
2.3 The MS does not select a cell with C1 < 0.
3. To verify that the MS selects suitable cells in descending order of received signal strength.
4. To verify that the MS does not select a cell with C1 < 0.
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51.010-1
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20.1.4 Method of test
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51.010-1
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20.1.4.1 Initial conditions
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Parameters changed from the default values in table 20.1.
Parameter
Carrier 1
Carrier 2
Carrier 3
Carrier 4
Carrier 5
Carrier 6
RF Signal Level
(dBV emf() / dBm)
48 / -65
38 / -75
43 / -70
33 / -80
28 / -85
OFF
CBA
1
0
0
0
0
RXLEV_ACCESS_MIN
(dBm)
-90
-67
-90
-88
-98
MNC
See Table 20.1c
MCC
002
C1
25
-8
20
8
13
C2
25
-8
20
8
13
For an E-GSM MS carrier 2 and carrier 4 ARFCNs are chosen in the E-GSM band, carrier 1 and carrier 3 ARFCNs in the P-GSM band.
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51.010-1
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20.1.4.2 Procedure
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a) The SS activates the carriers and monitors carriers 2, 4 and 5 for RA requests from the MS.
b) The MS is switched on.
c) The MS is switched off.
d) The SS monitors carriers 1 and 3 for RA requests from the MS.
e) The MS is switched on.
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51.010-1
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20.1.5 Test requirements
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1) After step b), the first response from the MS shall be on carrier 4 within 33 s. There shall be no response from the MS on carrier 2.
2) After step e), there shall be no response from the MS on either carrier 1 or carrier 3 within 33 s.
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51.010-1
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20.2 Cell selection with varying signal strength values
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51.010-1
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20.2.1 Definition
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For definition see conformance requirement.
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51.010-1
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20.2.2 Conformance requirement
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1. The MS shall:
The MS shall search all RF channels within its bands of operation, take readings of received RF signal level on each RF channel, and calculate the RLA_C for each. The averaging is based on at least five measurement samples per RF carrier spread over 3 to 5 s, the measurement samples from the different RF carriers being spread evenly during this period.
3GPP TS 05.08 / 3GPP TS 45.008, subclause 6.2.
1.1 The MS shall search all RF channels within its bands of operation, take readings of received RF signal level on each RF channel, and calculate the RLA_C for each.
1.2 The averaging is based on at least five measurement samples per RF carrier spread over 3 to 5 s, …
1.3 …. the measurement samples from the different RF carriers being spread evenly during this period.
2. These quantities termed the "received level averages" (RLA_C), shall be unweighted averages of the received signal levels measured in dBm..
GSM 05.08 / 3GPP TS 45.008, subclause 6.1.
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51.010-1
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20.2.3 Test purpose
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1. To verify that:
1.1 The MS meets conformance requirement 1.1.
1.2 The MS meets conformance requirement 1.2.
1.3 The MS meets conformance requirement 1.3.
2. To verify that the MS meets conformance requirement 2.
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51.010-1
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20.2.4 Method of test
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51.010-1
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20.2.4.1 Initial conditions
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Parameters changed from the default values in table 20.1.
Parameter
Carrier 1
Carrier 2
Carrier 3
Carrier 4
Carrier 5
Carrier 6
RF Signal Level
(dBV emf() / dBm)
23 / -90
58 / -55
OFF
OFF
OFF
OFF
RXLEV_ACCESS_MIN
(dBV emf() / dBm)
13 / -100
13 / -100
C1
10
53
For an E-GSM MS carrier 1 ARFCN is chosen in the E-GSM band.
Specific PICS Statements:
-
PIXIT statements:
- averaging time Tav
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51.010-1
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20.2.4.2 Procedure
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a) The SS transmits on carriers 1 and 2. After a period of b Tav carrier 2 reduces its transmit level to ‑85 dBm (28 dBV emf( )). After a further period of a Tav, carrier 2 increases its transmit level again to ‑55 dBm (58 dBV emf( )). Switching of carrier 2 continues with these levels and duty cycle until the end of the test.
Tav is the averaging time declared by the manufacturer.
The parameters a and b are chosen according to the following rules:
(a + b) Tav > Tav
0 < a Tav < 2/3 Tav
0,5 Tav < b Tav < Tav
In the equations < and > means at least one TDMA frame less or greater than the given value.
While satisfying the conditions given above:
a is chosen to be as close as possible to 2/3.
b is chosen to be as close as possible to 0,5.
b) The MS is switched on.
c) The SS monitors all RA requests from MS on carriers 1 and 2.
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51.010-1
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20.2.5 Test requirements
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In step c), the first response from the MS shall be on carrier 2 within 33 s.
NOTE 1: With the selected duty cycle it can be guaranteed that a "good" MS passes the test even at the worst case situations. The minimum averaged value of carrier 2 is in any case higher or equal to -75 dBm which is still 6 dB above carrier 1's level (for a "good" MS).
NOTE 2: With the selected levels and duty cycle the probability that a "bad" MS (i.e. MS that averages over shorter period than 3 s) fails the test is maximized. However, it can not be guaranteed that all the MSs not fulfilling the conformance requirement of averaging or uniform sampling will fail this test.
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51.010-1
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20.3 Basic cell reselection
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51.010-1
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20.3.1 Definition
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While camped on a cell of the selected PLMN the MS may need to select a different cell in order to fulfil the normal service state. This ensures that the MS is camped on a cell from which it can reliably decode downlink data and with which it has a high probability of communications on the uplink.
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51.010-1
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20.3.2 Conformance requirement
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1. While camped on a cell of the selected PLMN ("camped normally"), the MS may need to select a different cell ("normal cell reselection" state). The following events trigger a cell reselection:
1.1 (iii) The cell camped on (current serving cell) has become barred.
1.2 (iv) There is a better cell (in terms of the path loss criterion C2) in the same LA, or a much better cell in another LA of the selected PLMN (using the CRH parameter).
The MS will then reselect a new cell in order to fulfil the process goal.; 3GPP TS 03.22, subclause 4.5.
NOTE 1: Criterion (i) is tested in subclause 20.8 (Cell reselection when C1(serving cell) < 0 for 5 s).
NOTE 2: Criterion (ii) is tested subclause 20.16 (Downlink signalling failure).
NOTE 3: Criterion (v) is tested in subclause 20.6 (Cell reselection timings).
2. There are various requirements that a cell must satisfy before an MS can perform normal camping on it:
2.1 (ii) It should not be "barred".
2.2 (iv) The radio path loss between MS and BTS must be below a threshold set by the PLMN operator. 3GPP TS 03.22, subclause 3.2.1.
NOTE 4: Criterion (i) is not relevant for cell reselection and for cell selection it is tested in subclause 20.1.
NOTE 5: Criterion (iv) refers to the C1 parameter.
3. The MS shall be able to calculate correctly the path loss criterion parameter C2 used for cell reselection; 3GPP TS 05.08, subclause 6.4.
4. At least every 5 s the MS shall calculate the value of C1 and C2 for the serving cell and recalculate C1 and C2 values for non serving cells (if necessary). The MS shall then check whether:
i) The path loss criterion (C1) for current serving cell falls below zero for a period of 5 s. This indicates that the path loss to the cell has become too high.
ii) The calculated value of C2 for a non‑serving suitable cell exceeds the value of C2 for the serving cell for a period of 5 seconds, except;
a) in the case of the new cell being in a different location area or, for a GPRS MS, in a different routing area or always for a GPRS MS in ready state in which case the C2 value for the new cell shall exceed the C2 value of the serving cell by at least CELL_RESELECT_HYSTERESIS dB as defined by the BCCH data from the current serving cell, for a period of 5 seconds; or
b) in case of a cell reselection occurring within the previous 15 seconds in which case the C2 value for the new cell shall exceed the C2 value of the serving cell by at least 5 dB for a period of 5 seconds.
This indicates that it is a better cell.
3GPP TS 05.08 / 3GPP TS 45.008, subclause 6.6.2.
5. The MS shall attempt to decode the full BCCH data of the serving cell at least every 30 s; 3GPP TS 05.08, subclause 6.6.1.
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