ETSI TS 145 008 V15.2.0 (2019-04)

TECHNICAL SPECIFICATION
Digital cellular telecommunications system (Phase 2+) (GSM);
GSM/EDGE Radio subsystem link control
(3GPP TS 45.008 version 15.2.0 Release 15)

R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS
3GPP TS 45.008 version 15.2.0 Release 15 1 ETSI TS 145 008 V15.2.0 (2019-04)

Reference
RTS/TSGR-0645008vf20
Keywords
GSM
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3GPP TS 45.008 version 15.2.0 Release 15 2 ETSI TS 145 008 V15.2.0 (2019-04)
Intellectual Property Rights
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Foreword
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
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Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
3GPP TS 45.008 version 15.2.0 Release 15 3 ETSI TS 145 008 V15.2.0 (2019-04)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 8
1 Scope . 9
1.1 References . 9
1.2 Abbreviations . 11
1.3 Definitions . 11
1.4 Restrictions . 11
2 General . 11
3 Handover . 13
3.1 Overall process . 13
3.2 MS measurement procedure . 13
3.3 BSS measurement procedure . 13
3.4 Strategy . 13
4 RF power control . 14
4.1 Overall process . 14
4.2 MS implementation . 14
4.2.1 General . 14
4.2.2 (EC-)RACH . 15
4.2.2.1 Random access procedure when EC operation is not enabled . 15
4.2.2.2 Random access procedure when EC operation is enabled . 16
4.3 MS power control range . 16
4.4 BSS implementation . 17
4.4.1 VAMOS subchannel power control for BSS in downlink . 17
4.5 BSS power control range . 17
4.6 Strategy . 17
4.7 Timing . 17
4.7.1 Normal Power Control . 17
4.7.2 Fast Power Control . 18
4.7.3 Enhanced Power Control . 18
4.8 Dedicated channels used for a voice group call or voice broadcast. 18
5 Radio link failure . 19
5.1 Criterion . 19
5.2 MS procedure . 19
5.3 BSS procedure . 20
6 Idle mode tasks . 20
6.1 Introduction . 20
6.2 Measurements for normal cell selection . 21
6.3 Measurements for stored list cell selection . 22
6.4 Criteria for cell selection and reselection . 22
6.4.1 C1 path loss criterion . 22
6.4.2 C2 reselection criterion . 24
6.4.3 C4 criteria . 25
6.4.4 Disabling of EC operation . 25
6.5 Downlink signalling failure . 25
6.6 Measurements for Cell Reselection . 26
6.6.0 General . 26
6.6.1 Monitoring of received signal level and BCCH data . 26
6.6.1.1 Applicability. 26
6.6.1.2 Monitoring of received signal level . 26
6.6.1.3 Monitoring of BCCH data and BSIC decoding . 27
6.6.1.4 Determination of available PLMNs . 27
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6.6.1.5 Requirements for synchronization and reading of BCCH data . 27
6.6.1a Reduced Monitoring of received signal level and (EC-)BCCH data . 27
6.6.1a.1 General . 27
6.6.1a.2 Monitoring of the serving cell . 28
6.6.1a.3 Criteria for triggering measurements for cell re-selection. 29
6.6.1a.4 Monitoring of non-serving cells . 29
6.6.2 Path loss criteria and timings for cell re-selection . 30
6.6.3 Cell reselection algorithm for SoLSA . 30
6.6.4 Measurements on cells of other radio access technologies . 31
6.6.5 Algorithm for cell re-selection from GSM to UTRAN based on cell ranking . 35
6.6.6 Algorithm for inter-RAT cell re-selection based on priority information . 36
6.6.7 Cell selection and re-selection to CSG cells and hybrid cells . 39
6.6.7.1 Cell re-selection to CSG cells . 39
6.6.7.1a Cell re-selection to hybrid cells . 40
6.6.7.2 Manual CSG ID selection . 40
6.7 Release of TCH, SDCCH and DBPSCH . 40
6.7.1 Normal case . 40
6.7.2 Call re-establishment . 41
6.8 Abnormal cases and emergency calls . 41
6.9 RLA_EC signal level and SLA measurements . 42
6.9.1 General . 42
6.9.2 Physical parameters . 42
6.9.3 Statistical parameter . 42
6.9.4 Accuracy requirements . 43
6.9.5 Void . 43
6.9a RLA_GC signal level measurements . 43
6.9a.1 General . 43
6.9a.2 Physical parameter . 43
6.9a.3 Statistical parameter . 43
6.9a.4 Accuracy requirements . 43
6.10 Coverage class selection for EC-GSM-IoT . 43
6.10.1 General . 43
6.10.2 Downlink coverage class selection . 44
6.10.3 Uplink coverage class selection . 44
6.10.4 Coverage class adaptation for EC-CCCH . 45
6.10.5 Downlink coverage class update . 45
7 Network pre-requisites . 46
7.1 BCCH carriers . 46
7.2 Identification of surrounding BSS . 47
7.2.1 General . 47
7.2.2 Identification of surrounding BSS for handover measurements . 48
7.3 Handover measurements on other radio access technologies . 49
7.4 Handover measurements on UTRAN CSG cells and hybrid cells . 52
8 Radio link measurements . 53
8.1 Signal level . 53
8.1.1 General . 53
8.1.2 Physical parameter . 53
8.1.3 Statistical parameters . 54
8.1.4 Range of parameter . 54
8.1.5 Measurement quantity for other radio access technologies . 55
8.1.5.1 UTRAN FDD . 55
8.1.5.2 UTRAN TDD . 55
8.1.5.3 cdma2000 . 55
8.1.5.4 E-UTRAN FDD . 55
8.1.5.5 E-UTRAN TDD . 57
8.2 Signal quality . 57
8.2.1 General . 57
8.2.2 Physical parameter . 57
8.2.3 Statistical parameters . 57
8.2.3.1 RXQUAL . 57
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8.2.3.2 MEAN_ BEP and CV_BEP . 58
8.2.4 Range of parameter RXQUAL . 59
8.2.5 Range of parameters MEAN_BEP and CV_BEP . 60
8.3 Aspects of discontinuous transmission (DTX) . 64
8.4 Measurement reporting . 65
8.4.1 Measurement reporting for the MS . 65
8.4.1a Measurement reporting for the MS in FPC mode . 67
8.4.1b Measurement reporting for the MS in EPC mode . 67
8.4.2 Measurement reporting for the MS on a SDCCH . 68
8.4.3 Additional cell reporting requirements for multi band MS . 68
8.4.4 Common aspects for the MS on a TCH, a SDCCH or a DBPSCH . 69
8.4.5 Measurement reporting for the BSS . 69
8.4.6 Extended measurement reporting . 69
8.4.7 Additional cell reporting requirements for multi-RAT MS . 70
8.4.8 Enhanced Measurement Reporting . 71
8.4.8.1 Reporting Priority . 72
8.4.8.2 Measurement Reporting . 73
8.4.8.3 NBR_RCVD_BLOCKS for FLO . 74
8.4.9 Requirements for measurement and reporting of CSG cells and hybrid cells . 74
8.5 Absolute MS-BTS distance . 75
8.5.1 General . 75
8.5.2 Physical parameter . 75
9 Control parameters . 76
10 GPRS mode tasks . 87
10.1 Cell Re-selection . 87
10.1.0 General . 87
10.1.1 Monitoring the received signal level and PBCCH data . 88
10.1.1.0 General . 88
10.1.1.1 Packet idle mode or MAC-Idle state . 88
10.1.1.2 Packet transfer mode or MAC-Shared state . 89
10.1.1.2a Broadcast/multicast receive mode . 90
10.1.1.3 Monitoring cells of other radio access technologies . 91
10.1.2 Cell Re-selection Criteria . 95
10.1.3 Cell Re-selection Algorithm . 96
10.1.3.1 Abnormal cell reselection . 97
10.1.3.2 Algorithm for cell re-selection from GSM to UTRAN based on cell ranking . 98
10.1.3.3 Algorithm for inter-RAT cell re-selection based on priority information . 99
10.1.3.4 Cell selection and re-selection to CSG cells and hybrid cells . 99
10.1.4 Network controlled Cell re-selection . 99
10.1.4.1 Measurement reporting . 100
10.1.4.2 Cell re-selection command . 104
10.1.4.3 Exceptional cases . 104
10.1a Measurement and Reporting of CSG Cells and hybrid cells . 104
10.2 RF Power Control . 105
10.2.1 MS output power . 105
10.2.2 BTS output power . 107
10.2.3 Measurements at MS side . 108
10.2.3.1 Deriving the C value . 108
10.2.3.1.1 Packet idle mode or MAC-Idle state . 108
10.2.3.1.2 Packet transfer mode or MAC-Shared state . 109
10.2.3.1.2.1 MS that have not enabled EC operation . 109
10.2.3.1.2.2 MS that have enabled EC operation . 110
10.2.3.2 Derivation of Channel Quality Report . 111
10.2.3.2.1 Packet transfer mode or MAC-Shared state . 111
10.2.3.2.2 Void . 114
10.2.3.2.3 Measurement reporting . 114
10.2.3.2.4 Measurement reporting - additional requirements for downlink dual carrier . 115
10.2.3.2.5 Measurement reporting - additional requirements for downlink multi carrier. 116
10.2.3.3 Range of parameters MEAN_BEP and CV_BEP for EGPRS2 . 116
10.2.4 Measurements at BSS side . 120
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10.2a Packet-switched Handover . 120
10.3 Measurement requirements . 120
10.4 Control parameters . 120
11 CTS mode tasks . 128
11.1 CTS idle mode tasks . 128
11.1.1 CTS cell selection . 129
11.1.1.1 Synchronization and measurements for CTS cell selection . 129
11.1.1.2 Initial sychronization of CTS-MS . 129
11.1.2 Criterion for CTS cell selection . 129
11.1.3 Monitoring of CTSBCH and CTSPCH . 130
11.1.3.1 Monitoring of received signal level . 130
11.1.3.2 Downlink beacon failure . 130
11.1.3.3 Downlink paging failure . 130
11.1.4 Procedures with reporting to the CTS-FP . 130
11.1.4.1 AFA monitoring . 130
11.1.4.2 BCCH detection . 131
11.1.4.3 Observed Frequency Offset (OFO) measurement . 131
11.2 Intra-cell handover . 131
11.2.1 Overall process . 131
11.2.2 CTS-MS measurement procedure . 131
11.2.3 CTS-FP measurement procedure . 131
11.2.4 Strategy . 132
11.3 RF power control . 132
11.3.1 Overall process . 132
11.3.2 CTS-MS implementation . 132
11.3.3 CTS-MS power control range . 132
11.3.4 CTS-FP implementation . 132
11.3.5 CTS-FP power control range . 132
11.3.6 Strategy . 133
11.3.7 Timing . 133
11.4 Radio link failure . 133
11.4.1 Criterion . 133
11.4.2 CTS-MS procedure . 133
11.4.3 CTS-FP procedure . 134
11.5 Radio link measurements . 134
11.5.1 Signal strength . 134
11.5.1.1 General . 134
11.5.1.2 Physical parameter . 134
11.5.1.3 Statistical parameters . 134
11.5.1.4 Range of parameter . 134
11.5.2 Signal quality . 134
11.5.2.1 General . 134
11.5.2.2 Physical parameter . 134
11.5.2.3 Statistical parameters . 134
11.5.2.4 Range of parameter . 134
11.5.3 Aspects of discontinuous transmission (DTX) . 135
11.5.4 Measurement reporting for the CTS-MS on a TCH . 135
11.6 Control of CTS-FP service range . 135
11.7 Control parameters . 135
12 COMPACT Mode Tasks . 137
12.1 Introduction . 137
12.2 Network Pre-requisites . 137
12.2.1 CPBCCH carriers . 137
12.3 COMPACT Idle Mode Tasks . 137
12.3.1 Introduction. 137
12.3.2 Measurements for COMPACT Cell Selection . 138
12.3.3 Measurements for COMPACT Stored List Cell Selection . 138
12.3.4 Criteria for COMPACT Cell Selection . 138
12.3.5 Downlink Signalling Failure . 139
12.4 COMPACT Cell Reselection . 139
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12.4.1 Monitoring the received signal level and CPBCCH data . 139
12.4.1.1 Packet idle mode or MAC-Idle state . 139
12.4.1.2 Packet transfer mode or MAC-Shared state . 140
12.4.2 COMPACT cell reselection criteria . 140
12.4.3 COMPACT cell reselection algorithm . 141
12.4.4 Network controlled Cell reselection . 141
12.4.5 COMPACT cell reselection measurement opportunities . 141
Annex A (informative): Definition of a basic GSM or DCS 1 800 handover and RF power
control algorithm . 142
A.1 Scope . 142
A.2 Functional requirement. 142
A.3 BSS pre-processing and threshold comparisons. 143
A.3.1 Measurement averaging process . 143
A.3.2 Threshold comparison process . 144
A.3.2.1 RF power control process . 144
A.3.2.2 Handover Process . 145
A.4 BSS decision algorithm . 146
A.4.1 Internal intracell handover according to radio criteria: (Interference problems) . 146
A.4.2 Internal handover according to other criteria. 146
A.4.3 General considerations . 147
A.5 Channel allocation .
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