SIST EN 300 911 V8.3.2:2003
(Main)Digital cellular telecommunications system (Phase 2+) (GSM); Radio subsystem link control (GSM 05.08 version 8.3.2 Release 1999)
Digital cellular telecommunications system (Phase 2+) (GSM); Radio subsystem link control (GSM 05.08 version 8.3.2 Release 1999)
Upgrade to R99 plus CRs SMG#30, #30bis, #31
Digitalni celični telekomunikacijski sistem (faza 2+) – Krmiljenje povezave radijskega podsistema (GSM 05.08, različica 8.3.2, izdaja 1999)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2003
'LJLWDOQLFHOLþQLWHOHNRPXQLNDFLMVNLVLVWHP ID]D ±.UPLOMHQMHSRYH]DYH
UDGLMVNHJDSRGVLVWHPD *60UD]OLþLFDL]GDMD
Digital cellular telecommunications system (Phase 2+) (GSM); Radio subsystem link
control (GSM 05.08 version 8.3.2 Release 1999)
Ta slovenski standard je istoveten z: EN 300 911 Version 8.3.2
ICS:
33.070.50 Globalni sistem za mobilno Global System for Mobile
telekomunikacijo (GSM) Communication (GSM)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
European Standard (Telecommunications series)
Digital cellular telecommunications system (Phase 2+);
Radio subsystem link control
(GSM 05.08 version 8.3.2 Release 1999)
R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS
2 ETSI EN 300 911 V8.3.2 (2000-10)
(GSM 05.08 version 8.3.2 Release 1999)
Reference
REN/SMG-020508Q8
Keywords
Digital cellular telecommunications system,
Global System for Mobile communications (GSM)
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ETSI
3 ETSI EN 300 911 V8.3.2 (2000-10)
(GSM 05.08 version 8.3.2 Release 1999)
Contents
Intellectual Property Rights.7
Foreword.7
1 Scope .8
1.1 References .8
1.2 Abbreviations .9
2 General .9
3 Handover .10
3.1 Overall process.10
3.2 MS measurement procedure.10
3.3 BSS measurement procedure.10
3.4 Strategy .10
4 RF power control.11
4.1 Overall process.11
4.2 MS implementation .11
4.3 MS power control range .12
4.4 BSS implementation.12
4.5 BSS power control range.12
4.6 Strategy .12
4.7 Timing .13
4.8 Dedicated channels used for a voice group call or voice broadcast.13
5 Radio link failure.14
5.1 Criterion .14
5.2 MS procedure .14
5.3 BSS procedure.14
6 Idle mode tasks.15
6.1 Introduction .15
6.2 Measurements for normal cell selection.15
6.3 Measurements for stored list cell selection.16
6.4 Criteria for cell selection and reselection .16
6.5 Downlink signalling failure.17
6.6 Measurements for Cell Reselection.18
6.6.1 Monitoring of received signal level and BCCH data .18
6.6.2 Path loss criteria and timings for cell re-selection .19
6.6.3 Cell reselection algorithm for SoLSA.20
6.7 Release of TCH and SDCCH .20
6.7.1 Normal case .20
6.7.2 Call re-establishment .21
6.8 Abnormal cases and emergency calls.21
7 Network pre-requisites .22
7.1 BCCH carriers .22
7.2 Identification of surrounding BSS for handover measurements.22
8 Radio link measurements .23
8.1 Signal level.24
8.1.1 General.24
8.1.2 Physical parameter.24
8.1.3 Statistical parameters .25
8.1.4 Range of parameter.25
8.2 Signal quality.25
8.2.1 General.25
8.2.2 Physical parameter.25
8.2.3 Statistical parameters .26
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4 ETSI EN 300 911 V8.3.2 (2000-10)
(GSM 05.08 version 8.3.2 Release 1999)
8.2.4 Range of parameter.26
8.2.4.1 Range of parameters for EGPRS.27
8.3 Aspects of discontinuous transmission (DTX).31
8.4 Measurement reporting.32
8.4.1 Measurement reporting for the MS on a TCH .32
8.4.1.1 Measurement reporting for the MS on an E-TCH in FPC mode.33
8.4.2 Measurement reporting for the MS on a SDCCH.33
8.4.3 Additional cell reporting requirements for multi band MS.33
8.4.4 Common aspects for the MS on a TCH or a SDCCH.34
8.4.5 Measurement reporting for the BSS .34
8.4.6 Extended measurement reporting .35
8.4.7 Enhanced Measurement Reporting .35
8.4.7.1 Reporting Priority .35
8.4.7.2 Measurement Reporting.36
8.5 Absolute MS-BTS distance .37
8.5.1 General.37
8.5.2 Physical parameter.37
9 Control parameters .38
10 GPRS mode tasks.40
10.1 Cell Re-selection .40
10.1.1 Monitoring the received signal level and PBCCH data .41
10.1.1.1 Packet idle mode .41
10.1.1.2 Packet transfer mode.42
10.1.2 Cell Re-selection Criteria.43
10.1.3 Cell Re-selection Algorithm .44
10.1.3.1 Abnormal cell reselection .44
10.1.4 Network controlled Cell re-selection .45
10.1.4.1 Measurement reporting .45
10.1.4.2 Cell re-selection command.46
10.1.4.3 Exceptional cases .46
10.1.5 Extended Measurement reporting .47
10.2 RF Power Control.48
10.2.1 MS output power .48
10.2.2 BTS output power.49
10.2.3 Measurements at MS side .50
10.2.3.1 Deriving the C value .50
10.2.3.1.1 Packet idle mode.50
10.2.3.1.2 Packet transfer mode .51
10.2.3.2 Derivation of Channel Quality Report .52
10.2.3.2.1 Packet transfer mode .52
10.2.3.2.2 Packet idle mode.54
10.2.3.2.3 Measurement reporting.55
10.2.4 Measurements at BSS side.55
10.3 Measurement requirements .56
10.4 Control parameters .57
11 CTS mode tasks.59
11.1 CTS idle mode tasks.59
11.1.1 CTS cell selection .59
11.1.1.1 Synchronization and measurements for CTS cell selection .59
11.1.1.2 Initial sychronization of CTS-MS .59
11.1.2 Criterion for CTS cell selection .60
11.1.3 Monitoring of CTSBCH and CTSPCH.60
11.1.3.1 Monitoring of received signal level .60
11.1.3.2 Downlink beacon failure .60
11.1.3.3 Downlink paging failure .60
11.1.4 Procedures with reporting to the CTS-FP .61
11.1.4.1 AFA monitoring.61
11.1.4.2 BCCH detection .61
11.1.4.3 Observed Frequency Offset (OFO) measurement.61
11.2 Intra-cell handover .62
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5 ETSI EN 300 911 V8.3.2 (2000-10)
(GSM 05.08 version 8.3.2 Release 1999)
11.2.1 Overall process .62
11.2.2 CTS-MS measurement procedure.62
11.2.3 CTS-FP measurement procedure .62
11.2.4 Strategy.62
11.3 RF power control.62
11.3.1 Overall process .62
11.3.2 CTS-MS implementation.62
11.3.3 CTS-MS power control range.63
11.3.4 CTS-FP implementation .63
11.3.5 CTS-FP power control range .63
11.3.6 Strategy.63
11.3.7 Timing .63
11.4 Radio link failure.64
11.4.1 Criterion.64
11.4.2 CTS-MS procedure.64
11.4.3 CTS-FP procedure .64
11.5 Radio link measurements .64
11.5.1 Signal strength .64
11.5.1.1 General.64
11.5.1.2 Physical parameter .65
11.5.1.3 Statistical parameters .65
11.5.1.4 Range of parameter .65
11.5.2 Signal quality.65
11.5.2.1 General.65
11.5.2.2 Physical parameter .65
11.5.2.3 Statistical parameters .65
11.5.2.4 Range of parameter .65
11.5.3 Aspects of discontinuous transmission (DTX) .65
11.5.4 Measurement reporting for the CTS-MS on a TCH.65
11.6 Control of CTS-FP service range .66
11.7 Control parameters .66
12 COMPACT Mode Tasks.68
12.1 Introduction .68
12.2 Network Pre-requisites .68
12.2.1 CPBCCH carriers.68
12.3 COMPACT Idle Mode Tasks.68
12.3.1 Introduction.68
12.3.2 Measurements for COMPACT Cell Selection.68
12.3.3 Measurements for COMPACT Stored List Cell Selection .69
12.3.4 Criteria for COMPACT Cell Selection.69
12.3.5 Downlink Signalling Failure.69
12.4 COMPACT Cell Reselection .69
12.4.1 Monitoring the received signal level and CPBCCH data.70
12.4.1.1 Packet idle mode .70
12.4.1.2 Packet transfer mode.70
12.4.2 COMPACT cell reselection criteria.71
12.4.3 COMPACT cell reselection algorithm.71
12.4.4 Network controlled Cell reselection .71
12.4.5 COMPACT cell reselection measurement opportunities .71
Annex A (informative): Definition of a basic GSM or DCS 1 800 handover and RF power
control algorithm .72
A.1 Scope .72
A.2 Functional requirement.72
A.3 BSS pre-processing and threshold comparisons.73
A.3.1 Measurement averaging process.73
A.3.2 Threshold comparison process .74
A.3.2.1 RF power control process .74
A.3.2.2 Handover Process .75
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6 ETSI EN 300 911 V8.3.2 (2000-10)
(GSM 05.08 version 8.3.2 Release 1999)
A.4 BSS decision algorithm.76
A.4.1 Internal intracell handover according to radio criteria: (Interference problems).77
A.4.2 Internal handover according to other criteria.77
A.4.3 General considerations .77
A.5 Channel allocation.77
A.6 Handover decision algorithm in the MSC.78
Annex B (informative): Power Control Procedures.80
B.1 Open loop control.80
B.2 Closed loop control .81
B.3 Quality based control.81
B.4 BTS power control .82
B.5 Example.82
B.6 Interworking between normal and fast power control for ECSD.83
Annex C (informative): Example Interference Measurement Algorithm.85
Annex D (informative): Example Selection of Modulation and Coding Schemes based on
Link Quality Reports.86
Annex E (informative): Change control history .87
History .89
ETSI
7 ETSI EN 300 911 V8.3.2 (2000-10)
(GSM 05.08 version 8.3.2 Release 1999)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://www.etsi.org/ipr).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Special Mobile
Group (SMG).
The present document specifies the Radio sub-system link control implemented in the Mobile Station (MS), Base
Station System (BSS) and Mobile Switching Centre (MSC) of the digital mobile cellular and personal communication
systems operating in the 900 MHz and 1 800 MHz band (GSM 900 and DCS 1 800).
The contents of the present document are subject to continuing work within SMG and may change following formal
SMG approval. Should SMG modify the contents of the present document it will then be republished by ETSI with an
identifying change of release date and an increase in version number as follows:
Version 8.x.y
where:
8 indicates release 1999 of GSM Phase 2+.
x the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
y the third digit is incremented when editorial only changes have been incorporated in the specification.
National transposition dates
Date of adoption of the present document: 1 September 2000
Date of latest announcement of the present document (doa): 31 December 2000
Date of latest publication of new National Standard
or endorsement of the present document (dop/e): 30 June 2001
Date of withdrawal of any conflicting National Standard (dow): 30 June 2001
ETSI
8 ETSI EN 300 911 V8.3.2 (2000-10)
(GSM 05.08 version 8.3.2 Release 1999)
1 Scope
The present document specifies the Radio sub-system link control implemented in the Mobile Station (MS), Base
Station System (BSS) and Mobile Switching Centre (MSC) of the digital cellular telecommunications systems GSM.
Unless otherwise specified, references to GSM also include include operation in any band.
1.1 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
• A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same
number.
• For this Release 1999 document, references to GSM documents are for Release 1999 versions (version 8.x.y).
[1] GSM 01.04: "Digital cellular telecommunications system (Phase 2+); Abbreviations and
acronyms".
[2] GSM 03.03: "Digital cellular telecommunications system (Phase 2+); Numbering, addressing and
identification".
[3] GSM 03.09: "Digital cellular telecommunications system (Phase 2+); Handover procedures".
[4] GSM 03.22: "Digital cellular telecommunications system (Phase 2+); Functions related to Mobile
Station (MS) in idle mode and group receive mode".
[5] GSM 04.04: "Digital cellular telecommunications system (Phase 2+); Layer 1; General
requirements".
[6] GSM 04.06: "Digital cellular telecommunications system (Phase 2+); Mobile Station - Base
Station System (MS - BSS) interface; Data Link (DL) layer specification".
[7] GSM 04.08: "Digital cellular telecommunications system (Phase 2+); Mobile radio interface
layer 3 specification".
[8] GSM 05.02: "Digital cellular telecommunications system (Phase 2+); Multiplexing and multiple
access on the radio path".
[9] GSM 05.05: "Digital cellular telecommunications system (Phase 2+); Radio transmission and
reception".
[10] GSM 05.10: "Digital cellular telecommunications system (Phase 2+); Radio subsystem
synchronization".
[11] GSM 06.11: "Digital cellular telecommunications system; Full rate speech; Substitution and
muting of lost frames for full rate speech channels".
[12] GSM 08.08: "Digital cellular telecommunications system (Phase 2+); Mobile-services Switching
Centre - Base Station System (MSC - BSS) interface, Layer 3 specification".
[13] GSM 08.58: "Digital cellular telecommunications system (Phase 2+); Base Station
Controller - Base Transceiver Station (BSC - BTS) interface; Layer 3 specification".
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9 ETSI EN 300 911 V8.3.2 (2000-10)
(GSM 05.08 version 8.3.2 Release 1999)
[14] GSM 11.10: "Digital cellular telecommunications system (Phase 2+); Mobile Station (MS)
conformity specification".
[15] GSM 03.64: "Digital cellular telecommunications system (Phase 2+); General Packet Radio
Service (GPRS); Overall description of the GPRS Radio Interface; Stage 2".
[16] GSM 03.52: "Digital cellular telecommunications system (Phase 2+); GSM Cordless Telephony
System (CTS), Phase 1; Lower layers of the CTS Radio Interface; Stage 2".
[17] GSM 04.56: "Digital cellular telecommunications system (Phase 2+); GSM Cordless Telephony
System (CTS), Phase 1; CTS radio interface layer 3 specification".
[18] GSM 05.56: "Digital cellular telecommunications system (Phase 2+); GSM Cordless Telephony
System (CTS), Phase 1; CTS-FP radio subsystem".
1.2 Abbreviations
Abbreviations used in the present document are listed in GSM 01.04.
2 General
The radio sub-system link control aspects that are addressed are as follows:
- Handover;
- RF Power control, including fast power control for ECSD;
- Radio link Failure;
- Cell selection and re-selection in Idle mode, in Group Receive mode and in GPRS mode (see GSM 03.22);
- CTS mode tasks.
Handover is required to maintain a call in progress as a MS engaged in a point-to-point call or with access to the uplink
of a channel used for a voice group call passes from one cell coverage area to another and may also be employed to
meet network management requirements, e.g. relief of congestion.
Handover may occur during a call from one TCH or multiple TCHs (in the case of multislot configuration) to another
TCH or multiple TCHs. It may also occur from DCCH to DCCH or from DCCH to one or multiple TCH(s), e.g. during
the initial signalling period at call set-up.
The handover may be either from channel(s) on one cell to other channel(s) on a surrounding cell, or between channels
on the same cell which are carried on the same frequency band. Examples are given of handover strategies, however,
these will be determined in detail by the network operator.
For a multiband MS, specified in GSM 02.06, the handover described is also allowed between any channels on different
cells which are carried on different frequency bands, e.g. between a GSM 900/TCH and a DCS 1 800/TCH. Handover
between two co-located cells, carried on different frequency bands, is considered as inter-cell handover irrespective of
the handover procedures used.
Adaptive control of the RF transmit power from an MS and optionally from the BSS is implemented in order to
optimize the uplink and downlink performance and minimize the effects of co-channel interference in the system.
The criteria for determining radio link failure are specified in order to ensure that calls which fail either from loss of
radio coverage or unacceptable interference are satisfactorily handled by the network. Radio link failure may result in
either re-establishment or release of the call in progress. For channels used for a voice group call, an radio uplink failure
results in the freeing up of the uplink.
Procedures for cell selection and re-selection whilst in Idle mode (i.e. not actively processing a call), are specified in
order to ensure that a mobile is camped on a cell with which it can reliably communicate on both the radio uplink and
downlink. The operations of an MS in Idle Mode are specified in GSM 03.22.
ETSI
10 ETSI EN 300 911 V8.3.2 (2000-10)
(GSM 05.08 version 8.3.2 Release 1999)
Cell re-selection is also performed by the MS when attached to GPRS, except when the MS simultaneously has a circuit
switched connection. Optional procedures are also specified for network controlled cell re-selection for GPRS. Cell re-
selection for GPRS is defined in subclause 10.1.
An MS listening to a voice group call or a voice broadcast use cell re-selection procedures to change cell. This may be
supported by a list of cells carrying the voice group or voice broadcast call downlink, provided to the MS by the
network. The operations of an MS in Group Receive Mode are specified in GSM 03.22.
Information signalled between the MS and BSS is summarized in tables 1, 2 and 3. A full specification of the Layer 1
header is given in GSM 04.04, and of the Layer 3 fields in GSM 04.08.
For CTS, information signalled between the CTS-MS and CTS-FP is summarized in tables 4, 5 and 6. A full
specification of the CTS Layer 3 fields is given in GSM 04.56.
For COMPACT, specific procedures are defined in clause 12.
3 Handover
3.1 Overall process
The overall handover process is implemented in the MS, BSS and MSC. Measurement of radio subsystem downlink
performance and signal levels received from surrounding cells, is made in the MS. These measurements are signalled to
the BSS for assessment. The BSS measures the uplink performance for the MS being served and also assesses the signal
level of interference on its idle traffic channels. Initial assessment of the measurements in conjunction with defined
thresholds and handover strategy may be performed in the BSS. Assessment requiring measurement results from other
BTS or other information resident in the MSC, may be performed in the MSC.
GSM 03.09 describes the handover procedures to be used in PLMNs.
3.2 MS measurement procedure
A procedure shall be implemented in the MS by which it monitors the downlink RX signal level and quality from its
serving cell and the downlink RX signal level and BSIC of surrounding BTS. The method of identification of
surrounding BTS is described in subclause 7.2. The requirements for the MS measurements are given in subclause 8.1.
3.3 BSS measurement procedure
A procedure shall be implemented in the BSS by which it monitors the uplink RX signal level and quality from each
MS being served by the cell. In the case of a multislot configuration the evaluation shall be performed on a timeslot per
timeslot basis. A procedure shall be implemented by which the BSS monitors the levels of interference on its idle traffic
channels.
3.4 Strategy
The handover strategy employed by the network for radio link control determines the handover decision that will be
made based on the measurement results reported by the MS/BSS and various parameters set for each cell. Network
directed handover may also occur for reasons other than radio link control, e.g. to control traffic distribution between
cells. The exact handover strategies will be determined by the network operator, a detailed example of a basic overall
algorithm appears in annex A. Possible types of handover are as follows:
Inter-cell handover:
Intercell handover from the serving cell to a surrounding cell will normally occur either when the handover
measurements show low RXLEV and/or RXQUAL on the current serving cell and a better RXLEV available
from a surrounding cell, or when a surrounding cell allows communication with a lower TX power level. This
typically indicates that an MS is on the border of the cell area.
ETSI
11 ETSI EN 300 911 V8.3.2 (2000-10)
(GSM 05.08 version 8.3.2 Release 1999)
Intercell handover may also occur from the DCCH on the serving cell to a TCH or multislot configuration on
another cell during call establishment. This may be used as a means of providing successful call establishment
when no TCH resource is available on the current serving cell.
Inter-cell
...
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