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TECHNICAL SPECIFICATION
LTE;
Evolved Universal Terrestrial Radio Access (E-UTRA);
LTE Positioning Protocol A (LPPa)
(3GPP TS 36.455 version 15.2.1 Release 15)
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3GPP TS 36.455 version 15.2.1 Release 15 1 ETSI TS 136 455 V15.2.1 (2019-04)
Reference
RTS/TSGR-0336455vf21
Keywords
LTE
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3GPP TS 36.455 version 15.2.1 Release 15 2 ETSI TS 136 455 V15.2.1 (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
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3GPP TS 36.455 version 15.2.1 Release 15 3 ETSI TS 136 455 V15.2.1 (2019-04)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 6
1 Scope . 7
2 References . 7
3 Definitions, symbols and abbreviations . 8
3.1 Definitions . 8
3.2 Symbols . 8
3.3 Abbreviations . 8
4 General . 9
4.1 Procedure specification principles . 9
4.2 Forwards and backwards compatibility . 9
4.3 Specification notations . 9
5 LPPa services . 10
5.1 LPPa procedure modules . 10
5.2 Parallel transactions . 10
6 Services expected from lower layer . 10
7 Functions of LPPa . 10
8 LPPa procedures . 11
8.1 Elementary procedures . 11
8.2 Location Information Transfer Procedures . 11
8.2.1 E-CID Measurement Initiation . 11
8.2.1.1 General . 11
8.2.1.2 Successful Operation . 12
8.2.1.3 Unsuccessful Operation . 12
8.2.1.4 Abnormal Conditions . 12
8.2.2 E-CID Measurement Failure Indication . 13
8.2.2.1 General . 13
8.2.2.2 Successful Operation . 13
8.2.2.3 Unsuccessful Operation . 13
8.2.2.4 Abnormal Conditions . 13
8.2.3 E-CID Measurement Report . 13
8.2.3.1 General . 13
8.2.3.2 Successful Operation . 13
8.2.3.3 Unsuccessful Operation . 14
8.2.3.4 Abnormal Conditions . 14
8.2.4 E-CID Measurement Termination . 14
8.2.4.1 General . 14
8.2.4.2 Successful Operation . 14
8.2.4.3 Unsuccessful Operation . 14
8.2.4.4 Abnormal Conditions . 14
8.2.5 OTDOA Information Exchange . 14
8.2.5.1 General . 14
8.2.5.2 Successful Operation . 15
8.2.5.3 Unsuccessful Operation . 15
8.2.5.4 Abnormal Conditions . 15
8.2.6 UTDOA Information Exchange . 15
8.2.6.1 General . 15
8.2.6.2 Successful Operation . 16
8.2.6.3 Unsuccessful Operation . 16
8.2.6.4 Abnormal Conditions . 16
ETSI
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3GPP TS 36.455 version 15.2.1 Release 15 4 ETSI TS 136 455 V15.2.1 (2019-04)
8.2.7 UTDOA Information Update . 16
8.2.7.1 General . 16
8.2.7.2 Successful Operation . 17
8.2.7.3 Unsuccessful Operation . 17
8.2.7.4 Abnormal Conditions . 17
8.3 Management Procedures . 17
8.3.1 Error Indication . 17
8.3.1.1 General . 17
8.3.1.2 Successful Operation . 17
8.3.1.3 Abnormal Conditions . 18
8.4 Assistance Information Transfer Procedures . 18
8.4.1 Assistance Information Control . 18
8.4.1.1 General . 18
8.4.1.2 Successful Operation . 18
8.4.1.3 Abnormal Conditions . 18
8.4.2 Assistance Information Feedback . 18
8.4.2.1 General . 18
8.4.2.2 Successful Operation . 19
8.4.2.3 Abnormal Conditions . 19
9 Elements for LPPa Communication . 19
9.0 General . 19
9.1 Message Functional Definition and Content . 19
9.1.1 Messages for Location Information Transfer Procedures . 19
9.1.1.1 E-CID MEASUREMENT INITIATION REQUEST . 19
9.1.1.2 E-CID MEASUREMENT INITIATION RESPONSE . 20
9.1.1.3 E-CID MEASUREMENT INITIATION FAILURE . 21
9.1.1.4 E-CID MEASUREMENT FAILURE INDICATION . 21
9.1.1.5 E-CID MEASUREMENT REPORT . 21
9.1.1.6 E-CID MEASUREMENT TERMINATION COMMAND . 22
9.1.1.7 OTDOA INFORMATION REQUEST . 22
9.1.1.8 OTDOA INFORMATION RESPONSE . 23
9.1.1.9 OTDOA INFORMATION FAILURE . 23
9.1.1.10 UTDOA INFORMATION REQUEST . 24
9.1.1.11 UTDOA INFORMATION RESPONSE . 24
9.1.1.12 UTDOA INFORMATION FAILURE . 24
9.1.1.13 UTDOA INFORMATION UPDATE . 24
9.1.2 Messages for Management Procedures . 24
9.1.2.1 ERROR INDICATION . 24
9.1.3 Messages for Assistance Information Transfer Procedures . 25
9.1.3.1 ASSISTANCE INFORMATION CONTROL . 25
9.1.3.2 ASSISTANCE INFORMATION FEEDBACK . 25
9.2 Information Element definitions . 25
9.2.0 General . 25
9.2.1 Cause . 25
9.2.2 Criticality Diagnostics . 27
9.2.3 Message Type . 27
9.2.4 LPPa Transaction ID . 28
9.2.5 E-CID Measurement Result . 28
9.2.6 ECGI . 29
9.2.7 OTDOA Cell Information . 29
9.2.8 E-UTRAN Access Point Position . 32
9.2.9 PRS Muting Configuration . 32
9.2.10 Requested SRS Transmission Characteristics . 33
9.2.11 UL Configuration . 33
9.2.12 Cell Portion ID . 35
9.2.13 Inter-RAT Measurement Result . 35
9.2.15 WLAN Measurement Result. 37
9.2.16 NPRS configuration . 37
9.2.17 NPRS Muting Configuration . 39
9.2.18 Offset of NB-IoT Channel Number to EARFCN . 39
9.2.19 PRS Frequency Hopping Configuration . 39
ETSI
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3GPP TS 36.455 version 15.2.1 Release 15 5 ETSI TS 136 455 V15.2.1 (2019-04)
9.2.20 Assistance Information . 40
9.2.21 PosSIB Segments . 40
9.2.22 Assistance Information Meta Data . 41
9.2.23 Positioning SIB Type . 41
9.2.24 Assistance Information Failure List . 42
9.2.25 TDD Configuration . 42
9.3 Message and Information Element Abstract Syntax (with ASN.1) . 43
9.3.1 General . 43
9.3.2 Usage of Private Message Mechanism for Non-standard Use . 43
9.3.3 Elementary Procedure Definitions . 43
9.3.4 PDU Definitions . 48
9.3.5 Information Element definitions . 55
9.3.6 Common definitions . 72
9.3.7 Constant definitions . 73
9.3.8 Container definitions. 75
9.4 Message transfer syntax . 80
9.5 Timers . 80
10 Handling of unknown, unforeseen and erroneous protocol data . 80
Annex A (informative): Change History . 81
History . 82
ETSI
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3GPP TS 36.455 version 15.2.1 Release 15 6 ETSI TS 136 455 V15.2.1 (2019-04)
Foreword
rd
This Technical Specification has been produced by the 3 Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.
ETSI
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3GPP TS 36.455 version 15.2.1 Release 15 7 ETSI TS 136 455 V15.2.1 (2019-04)
1 Scope
The present document specifies the control plane radio network layer signalling procedures between eNB and E-SMLC.
LPPa supports the concerned functions by signalling procedures defined in this document. LPPa is developed in
accordance with the general principles stated in TS 36.401 [2].
2 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. In the case of a reference to a 3GPP document (including
a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same
Release as the present document.
[1] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".
[2] 3GPP TS 36.401:"Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Architecture
Description".
[3] 3GPP TS 36.413:"Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1
Application Protocol (S1AP)".
[4] ITU-T Recommendation X.691 (2002-07): "Information technology - ASN.1 encoding rules -
Specification of Packed Encoding Rules (PER) ".
[5] 3GPP TS 36.104:"Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Base Station
(BS) radio transmission and reception".
[6] 3GPP TS 36.211:"Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Physical
Channels and Modulation".
[7] 3GPP TS 23.032:"Technical Specification Group Services and System Aspects; Universal
Geographical Area Description (GAD)".
[8] 3GPP TS 36.133:"Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for
support of radio resource management".
[9] 3GPP TR 25.921 (version.7.0.0): "Guidelines and principles for protocol description and error
handling".
[10] 3GPP TS 36.331:"Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource
Control (RRC); Protocol specification".
[11] IEEE Std 802.11™-2012, IEEE Standard for Information technology - Telecommunications and
information exchange between systems - Local and metropolitan area network.
[12] 3GPP TS 36.213: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer
procedures".
[13] 3GPP TS 36.355: "Evolved Universal Terrestrial Radio Access (E-UTRA); LTE Positioning
Protocol (LPP)".
ETSI
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3GPP TS 36.455 version 15.2.1 Release 15 8 ETSI TS 136 455 V15.2.1 (2019-04)
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in TR 21.905 [1] and the following apply. A
term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 [1].
Elementary Procedure: LPPa protocol consists of
...