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full Contents for  TS 23.273  Word version:   16.3.0

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A  Differences with TS 23.271 [4]Word-p. 89
A.0  General
Differences with TS 23.271 are described here where these may impact service to a target UE, LCS client, or client AF or NF. The differences are restricted to those applicable to a UE with EPS access in the case of TS 23.271 and do not include all differences applicable to GERAN or UTRAN access.
A.1  Differences in Parameters for a Location Request
Table A.1-1 shows a list of parameters applicable to a location request sent by an external LCS client to a GMLC which are defined in TS 23.271, differences if any with this TS, and comments on these including any significant consequences.
Location Request Parameter
Difference
Comments

Target UE Identity
GPSI, SUPI or pseudonym in this TS
MSISDN, IMSI or pseudonym in TS 23.271
LCS QoS
None
Supported GAD shapes
None
LCS Client type
None
Called Party Number
Not supported in this TS
If provided, this parameter should be ignored by a GMLC
APN NI
Not supported in this TS
If provided, this parameter should be ignored by a GMLC
Service Identity
None
Codeword
None
Service coverage information
None
Requestor Identity
Not supported in this TS
If provided, this parameter should be ignored by a GMLC
Type of Requestor Identity
Not supported in this TS
If provided, this parameter should be ignored by a GMLC
Type of a deferred location request
None
Periodic Location parameters
None
Area Event parameters
None
Motion Event parameters
None

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A.2  Differences in Information Storage in the UDR/UDM versus HSS/GMLC for EPS
Table A.2-1 shows a list of LCS information storage items for a UE in the UDR and UDM defined in this TS and for the HSS and/or GMLC defined in TS 23.271, differences if any between this TS and TS 23.271, and comments on these including any significant consequences.
Information Storage Item(s)
Difference
Comments

UE Privacy Universal Class
Not supported in this TS
This privacy class should not be supported for 5GC capable UEs on the EPS side to avoid differences in LCS privacy support between EPS access and 5GS access for the same UE. (Note 1)
UE Location Privacy Indication
Not supported in TS 23.271
This indication can create differences between LCS client access to a UE which has 5GS access versus EPS access. (Note 1)
UE Privacy Call/Session related Class
Not supported in this TS
This privacy class should not be supported for 5GC capable UEs on the EPS side to avoid differences in LCS privacy support between EPS access and 5GS access for the same UE. (Note 1)
This privacy class can create differences between LCS client access to a UE which has 5GS access versus EPS access. (Note 1)
UE Privacy Call/Session unrelated Class
Supported as defined in TS 23.271 with the following differences:
- Information related to an RGMLC is not included
- An optional time period is not supported in TS 23.271
- An optional geographic area is not supported in TS 23.271
UE Privacy PLMN Operator Class
None
UE LCS Mobile Originating Data
None

NOTE 1:
A PLMN operator can avoid any difference in UE privacy support for EPS access versus 5GS access by only storing information for UE privacy (in the UE LCS privacy profile) in a UDR (and UDM) and not in an HSS or GMLC.

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A.3  Differences in Information Storage in the GMLCWord-p. 90
Table A.3-1 shows a list of information storage items in the GMLC for an LCS Client defined in this TS and in TS 23.271, differences if any between this TS and TS 23.271, and comments on these including any significant consequences.
Information Storage Item(s)
Difference
Comments

LCS Client Type
None
LCS Client Type
None
External identity
None
Authentication data
None
Call/session related identity
Not supported in this TS
This information item can create differences between LCS client access to a UE which has 5GS access versus EPS access. (Note 1)
Internal identity
None
Client name
None
Client name type
No difference except that this TS adds a Client Name type in the form of a GPSI.
A GPSI can be an MSISDN or External Identifier in the form of "username@realm" as defined in TS 23.003.
TS 23.271 allows an MSISDN but the External Identifier is not included.
Override capability
None
Authorized UE List
None
Priority
None
QoS parameters
None
Service Coverage
None
Allowed LCS + Request Types
TS 23.271 includes the following items which are not in this TS:
- Non-call related CS-MT-LR/PS-MT-LR/EPC-MT-LR
- Call/session related CS-MT-LR/PS-MT-LR/EPC-MT-LR
- Specification or negotiation of priority
- Specification or negotiation of QoS parameters
- Specification or negotiation of Service Coverage parameter
This TS includes the following items which are not in TS 23.271:
- Request of deferred location for the UE available event
- Request of deferred location for UE periodic events
- Request of deferred location for the Area Event
- Request of deferred location for the Motion Event
This TS should take precedence (Note 1)
Local Co-ordinate System
None
Access Barring List(s)
TS 23.271 includes a list of MSISDNs.
This TS includes a list of SUPIs
This TS can take precedence (Note 1)
Service Identities
None
Maximum Target UE Number
None

NOTE 1:
A PLMN operator can avoid any difference in LCS Client support for a target UE with EPS access versus 5GS access by only storing information for an LCS Client in a GMLC as defined in this TS.

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A.4  Differences with TS 23.271 [4] on PrivacyWord-p. 91
A.4.1  Differences in UE LCS Privacy
Table A.4.1-1 shows a list of UE LCS privacy features defined in this specification and in TS 23.271, differences if any between these, and comments on these including any significant consequences.
UE LCS Privacy Feature
Difference
Comments

Privacy Override Indicator (POI)
None
UE Privacy Universal Class
Not supported in this TS
This class allows a UE to subscribe to location by any LCS client. For such a UE, a 5GC GMLC will not support such location.
Location Privacy Indication
Not supported in TS 23.271
As defined in clause 5.4.2.3.
UE Privacy Call/Session related Class
Not supported in this TS
This class permits location by LCS clients to which the UE has established a PS session.
A 5GC GMLC will not allow such location. However, the location can be allowed as part of the Call/Session unrelated class.
UE Privacy Call/Session unrelated Class
Supported as defined in TS 23.271 with the following differences:
An optional valid time period is added
An optional valid geographic area is added
The optional valid time period and valid geographic area allow more precise control of location reporting. For example, tracking of employees by an employer can be restricted to a work location and/or normal work hours.
UE Privacy PLMN Operator Class
Supported as defined in TS 23.271

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