5 Mobile initiated location services operations

04.303GPPLocation Services (LCS)Stage 3Supplementary service operationsTS

5.1 Mobile Originated Location Request (MO-LR)

5.1.1 Normal operation

The MS invokes a MO-LR by sending a REGISTER message to the network containing a LCS-MOLR invoke component. SS Version Indicator value 1 or above shall be used.

The receiving network entity shall initiate the handling of location request in the network. The network shall pass the result of the location procedure to the MS by sending a FACILITY message to the MS containing a LCS-MOLR return result component.

The MS may terminate the dialogue by sending a RELEASE COMPLETE message in the case of single location request (see figure 5.1). The MS may also initiate another location request operation by sending a FACILITY message to the network containing a LCS-MOLR invoke component (see figure 5.2). After the last location request operation the MS shall terminate the dialogue by sending a RELEASE COMPLETE message.

If the network is unable to successfully fulfil the request received from the MS (e.g. to provide a location estimate or location assistance information), it shall clear the transaction by sending a RELEASE COMPLETE message containing a return error component. Error values are specified in GSM 04.80.

If the network has returned a result to the MS in a FACILITY message but, after some PLMN administered time period has elapsed, has not received either a new location request operation in a FACILITY message or a RELEASE COMPLETE message from the MS, the network may clear the transaction by sending a RELEASE COMPLETE message.

MS Network

REGISTER

————————————————————————————————————————>

Facility (Invoke = LCS-MOLR (molr-Type, locationMethod, lcs-QoS, lcsClientExternalID, mlc-Number, gpsAssistanceData))

FACILITY

<————————————————————————————————————————

Facility (Return result = LCS-MOLR (locationEstimate, decipheringKeys))

RELEASE COMPLETE

<- – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

Facility (Return error (Error))

RELEASE COMPLETE

<- – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

Facility (Reject (Invoke_problem))

RELEASE COMPLETE

————————————————————————————————————————>

Figure 5.1: Single mobile originated location request

MS Network

REGISTER

————————————————————————————————————————>

Facility (Invoke = LCS-MOLR (molr-Type, locationMethod, lcs-QoS, lcsClientExternalID, mlc-Number, gpsAssistanceData))

FACILITY

<————————————————————————————————————————

Facility (Return result = LCS-MOLR (locationEstimate, decipheringKeys))

RELEASE COMPLETE

<- – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

Facility (Return error (Error))

RELEASE COMPLETE

<- – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

Facility (Reject (Invoke_problem))

FACILITY

————————————————————————————————————————>

Facility (Invoke = LCS-MOLR (molr-Type, locationMethod, lcs-QoS, lcsClientExternalID, mlc-Number, gpsAssistanceData))

FACILITY

<————————————————————————————————————————

Facility (Return result = LCS-MOLR (locationEstimate, decipheringKeys))

RELEASE COMPLETE

<- – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

Facility (Return error (Error))

RELEASE COMPLETE

<- – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

Facility (Reject (Invoke_problem))

.

.

.

RELEASE COMPLETE

————————————————————————————————————————>

Figure 5.2: Multiple mobile originated location requests

Annex A (informative):
Change history

Change history

Date

TSG #

TSG Doc.

CR

Rev

Subject/Comment

Old

New

SMG#30bis

Approved at SMG#30bis as Release 98

7.0.1

SMG#31

A001

Parameters of the operations in figures 4.1, 5.1 and 5.2 (LCS)

7.0.1

7.1.0

Jun. 2000

CN#08

A002

Correction of MO-LR procedure for LCS

7.1.0

7.2.0

Dec. 2001

CN#14

NP-010613

A003

Specify usage of SS Version Indicator

7.2.0

7.3.0