3GPP TSG-SA WG2 Meeting #18

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3GPP TSG-SA WG2 Meeting #18 Powered By Docstoc
					3GPP TSG-CN WG2 Meeting #21                                                               Tdoc N2-010975
Cancun, Mexico, 26th – 30th November
                                                                                                           CR-Form-v3

                                     CHANGE REQUEST
                    23.018                             rev               Current version:      3.9.0                Comment [H1]: Enter the specification number
                                                                    -                                                   in this box. For example, 04.08 or 31.102. Do not
                                                                                                                        prefix the number with anything . i.e. do not use
   For HELP on using this form, see bottom of this page or look at the pop-up text over the  symbols.                  "TS", "GSM" or "3GPP" etc.
                                                                                                                        Comment [H2]: Enter the CR number here. This
Proposed change affects:          (U)SIM          ME/UE           Radio Access Network           Core Network x        number is allocated by the 3GPP support team.
                                                                                                                        Comment [H3]: Enter the revision number of the
Title:            Corrections in the ATI mechanism description                                                         CR here. If it is the first version, use a "-".
                                                                                                                        Comment [H4]: Enter the version of the
Source:           France Telecom                                                                                       specification here. This number is the version of the
                                                                                                                        specification to which the CR will be applied if it is
                                                                                                                        approved. Make sure that the lastest version of the
Work item code:  CAMEL 3                                                        Date:  2001-11-25                     specification (of the relevant release) is used when
                                                                                                                        creating the CR. If unsure what the latest version is,
Category:         F      Agreed by consensus                                Release:  REL-99                          go to http://www.3gpp.org/3G_Specs/3G_Specs.htm
                                                                                                                        Comment [H5]: For help on how to fill out a
                    Use one of the following categories:                       Use one of the following releases:       field, place the mouse pointer over the special
                         F (essential correction)                                2         (GSM Phase 2)                symbol closest to the field in question.
                         A (corresponds to a correction in an earlier release)   R96       (Release 1996)
                                                                                                                        Comment [H6]: Mark one or more of the boxes
                         B (Addition of feature),                                R97       (Release 1997)               with an X.
                         C (Functional modification of feature)                  R98       (Release 1998)
                         D (Editorial modification)                              R99       (Release 1999)               Comment [H7]: Enter a concise description of
                    Detailed explanations of the above categories can            REL-4 (Release 4)                      the subject matter of the CR. It should be no longer
                    be found in 3GPP TR 21.900.                                  REL-5 (Release 5)                      than one line.
                                                                                                                        Comment [H8]: Enter the source of the CR. This
                                                                                                                        is either (a) one or several companies or, (b) if a
Reason for change:  The UMTS specific location information (SAI) has to be taken into account                          (sub)working group has already reviewed and agreed
                                                                                                                        the CR, then list the group as the source.
Summary of change: The Active Location Retrieval procedure allows the gsmSCF to know the                               Comment [H9]: Enter the acronym for the work
                    location of the MS with the accuracy of the cell ID for GSM or SAI for UMTS                         item which is applicable to the change. This field is
                    at every time it is possible.                                                                       mandatory for category F, B & C CRs for release 4
                                                                                                                        and later. Work item acronyms are listed in the
                    With the current R99 specification 23.018 (v 3.9.0), it is possible to                              3GPP work plan. See
                    retrieve the current SAI in UMTS in the following case :                                            http://www.3gpp.org/ftp/information/work_plan/
                    -     there is no MS connexion.
                                                                                                                        Comment [H10]: Enter the date on which the
                                                                                                                        CR was last revised.
                       However, the RANAP message Location Reporting Control (see 25.413) allows
                       the CN (SGSN or MSC) to retrieve the current SAI from the RNC in case an MS                      Comment [H11]: Enter a single letter
                                                                                                                        corresponding to the most appropriate category listed
                       connexion exists.                                                                                below. For more detailed help on interpreting these
                       Therefore, we propose to correct the handling specified in the 23.018.                           categories, see the Technical Report 21.900 "3GPP
                       We also have the following corrections in 23.018 :                                               working methods".
                       -     § 7.2.3.4 : adding the SAI in "Location Information Received"                              Comment [H12]: Enter a single release code
                       -     SDL 57 : adding the SAI case in the part concerning the                                    from the list below.
                       interrogation to the SGSN (see § 6.3.6. in the 23.060 specification about                        Comment [H13]: Enter text which explains why
                       the handling of the MS Information Request operation).                                           the change is necessary.
                       -     SDL 64 : allowing the MSC to send a "Location Reporting Control" to
                                                                                                                        Comment [H14]: Enter text which describes the
                       retrieve the SAI from the RNC.                                                                   most important components of the change. i.e. How
                                                                                                                        the change is made.

Consequences if        Lack of clarity on requirements for ATI. Inconsistencies between 23.060 and                     Comment [H15]: Enter here the consequences if
not approved:           23.018                                                                                          this CR was to be rejected. It is necessary to
                                                                                                                        complete this section only if the CR is of category
                                                                                                                        "F" (i.e. essential correction).
Clauses affected:      7.2.3. and 7.2.4
                                                                                                                        Comment [H16]: Enter each the number of each
                                                                                                                        clause which contains changes.
Other specs                 Other core specifications         
affected:                    Test specifications                                                                        Comment [H17]: Enter an X in the box if any
                                                                                                                        other specifications are affected by this change.
                             O&M Specifications
                                                                                                                        Comment [H18]: List here the specifications
                                                                                                                        which are affected or the CRs which are linked.


                                                   CR page 1
Other comments:                                                                                                               Comment [H19]: Enter any other information
                                                                                                                               which may be needed by the group being requested
                                                                                                                               to approve the CR. This could include special
How to create CRs using this form:
                                                                                                                               conditions for it's approval which are not listed
Comprehensive information and tips about how to create CRs can be found at: http://www.3gpp.org/3G_Specs/CRs.htm.              anywhere else above.
Below is a brief summary:
1) Fill out the above form. The symbols above marked  contain pop-up help information about the field that they are           Comment [H20]: This is an example of pop-up
   closest to.                                                                                                                 text.
2) Obtain the latest version for the release of the specification to which the change is proposed. Use the MS Word
   "revision marks" feature (also known as "track changes") when making the changes. All 3GPP specifications can be
   downloaded from the 3GPP server under ftp://www.3gpp.org/specs/ For the latest version, look for the directory name
   with the latest date e.g. 2000-09 contains the specifications resulting from the September 2000 TSG meetings.
3) With "track changes" disabled, paste the entire CR form (use CTRL-A to select it) into the specification just in front of
   the clause containing the first piece of changed text. Delete those parts of the specification which are not relevant to
   the change request.




                                                        CR page 2
                                              *** First Change ***


Process PSI_VLR
Sheet 1: the procedure Check_Parameters is specified in subclause 7.2.2.2. If the HLR
requests neither location information nor subscriber state, the VLR treats this as a missing
parameter.
7.2.3.4          Procedure Retrieve_Location_Info_VLR
The variable Current location retrieved is used to indicate that the location information was
obtained by paging the MS.
The test "Retrieve location info from SGSN" takes the "Yes" exit if:
   -   the Gs interface is implemented; and

   -   there is an association established between the MSC/VLR and the SGSN.

The stored location information consists of:
   -   the service area ID (for UMTS) or cell ID (for GSM) of the cell in which the MS last established radio
       contact;

   -   the location number, geodetic information and geographical information derived from the service area ID
       or cell ID if the VLR is capable of doing so (the mapping from service area ID or cell ID to location
       number is network-specific and outside the scope of the UMTS and GSM standards);

   -   the age of the location information.

The received location information consists of:
   -   the service area ID (UMTS) or cell ID (GSM) received in the paging response message or in the MS
       Information Ack ;

   -   the location number, geodetic information and geographical information derived from the service area       Formatted: Bullets and Numbering
       ID or cell ID if the VLR is capable of doing so (the mapping from service area ID or cell ID to location
       number is network-specific and outside the scope of the UMTS and GSM standards);

   the location number and geographical information derived from the cell ID if the VLR is capable of doing so
   (the mapping from cell ID to location number is network-specific and outside the scope of the GSM
   standard);

   -   the age of the location information.

The output signal Send MS information towards the SGSN indicates that the required
information is mobile location information.
The derivation of the location number, geodetic information and geographical information
from the received service area ID or cell ID is a VLR operator option (the mapping from
service area ID or cell ID to location number is network-specific and outside the scope of the
UMTS and GSM standards).

The question box "Report upon change of service area" means that the MSC has performed
the Location Reporting Control procedure with the Request Type IE set to "change of service
area" [26]




                                                   CR page 3
                                                                                                                                                              Formatted
Procedure Retrieve_Location_Info_VLR                                                                                                 RLI_VLR1(
 Procedure in the VLR                                                                                                 Signals to/from1) right
                                                                                                                                     the
 to retrieve location information                                                                                     are to/from the SGSN
 for a subscriber

                                                                                      Current location
                                                                                        retrieved:=
                                                                                           False

                                                                                      Yes
                                                                                                               Retrieve location
                                                                                                               info from SGSN?
                                                                                                 No
                                                                                          Current        Yes
  Send MS
  information                                                                             location
                                                                                        requested?
                                                                                                 No

   Wait_For_                                                                                                 Retrieve_
SGSN_Response                                                                                                Current_
                                                                                                           Location_VLR


  Send MS                                            Send MS                                              FalseCurrent
  Information                                        Information                                              location
  negative                                           ack                                                      retrieved
  response                                                                                                            True
     Current                                           Current    No                                       Location info:=
                    Yes
     location                                          location                                               Retrieved
   requested?                                        requested?                                             location info
                                                              Yes
            No
                                               No                                     Location info:=                              Derive location number,
                                                      Cell ID or SAI
                                                      received?                           Stored                                   geodetic information and
                                                                                       location info                               geographical information
                                                              Yes
                                                No                 Yes
                                                      MS state=
                                                       Ready?


                                Retrieve_
                                Current_
                              Location_VLR

                              False
                                 Current     True
                                location
                                retrieved


 Location info:=                                                    Location info:=
     Stored                                                            Received
  location info                                                      location info


                                                                                        Derive location number,
                                                                                        geodetic information and
                                                                                        geographical information




                                                                   CR page 4
Procedure Retrieve_Location_Info_VLR                                                                                                            RLI_VLR1(1)
Procedure in the VLR                                                                                                          Signals to/from the right
to retrieve location information                                                                                              are to/from the SGSN
for a subscriber


                                                                                             Current location
                                                                                               retrieved:=
                                                                                                  False

                                                                                            Yes
                                                                                                                      Retrieve location
                                                                                                                      info from SGSN?
                                                                                                        No
                                                                                                    Current     Yes
 Send MS
 information                                                                                        location
                                                                                                  requested?
                                                                                                          No

  Wait_For_                                                                                                             Retrieve_
SGSN_Response                                                                                                           Current_
                                                                                                                      Location_VLR


 Send MS                                                 Send MS                                                 False Current
 Information                                             Information                                                  location
 negative                                                ack                                                          retrieved
 response                                                                                                                    True
      Current                                               Current   No                                              Location info:=
      location                                              location                                                     Retrieved
    requested?                                            requested?                                                   location info
                                                                  Yes
            No
                                                         No                                   Location info:=                             Derive location number,
                                                                Cell ID
                                                              received?                           Stored                                  geodetic information and
                                                                                               location info                              geographical information
                                                                    Yes
                                                         No               Yes
                                                              MS state=
                                                               Ready?


                                     Retrieve_
                                     Current_
                                   Location_VLR

                               FalseCurrent       True
                                   location
                                   retrieved


  Location info:=                                                         Location info:=
      Stored                                                                 Received
   location info                                                           location info


                                                                                              Derive location number,
                                                                                              geodetic information and
                                                                                              geographical information




                                     Figure 57: Procedure Retrieve_Location_Info_VLR




                                                                       CR page 5
*** Second Change ***




      CR page 6
Procedure                                                                                                                                               CLPage_M1(1)
Current_Location_Page_MSC
Procedure in the MSC                                                                                                                       Signals to/from the left
to page an MS in a specified                                                                                                               are to/from the BSS/RAN;
location area for Active                                                                                                                   signals to/from the right
Location Retrieval                                                                                                                         are to/from the VLR
                                                                                                                                           unless marked otherwise




                                                                       No
                                                      Location
                                                       area ID
                                                       known?

                                                                 Yes


                                                         MS
                                                     connection
                                                       exists?
                                                                                                                                      Yes
                                                                 No

                                                No
                                                                            Paging via
                                                                            SGSN possible?

                                                                 Yes


  In specified                                  Page MS
                                   Page
  location area                                 via SGSN




                                                     Start Page
                                                      response
                                                        timer




                                                     Wait_For_
                                                      Page_
                                                     Response



                                                                                                                   Yes
                                                       Page response            MS
  For circuit-                     CM Service          timer                    connection                                   GSM
  switched call                    Request             expired                  established                                 Access?

                                                                                                                                      No


  To process                   CM Service                                       Release                                    Report of change of
  OCH_MSC                      Request                                          transaction                                service area active
                                                                                                              Yes
                                                                                                                           ?
                                                                                                                                    No

                                Set negative     Set negative
                                                                                                                                                       Set negative
                                  response:        response:                                                              Location                       response:
                                     Busy            Absent                                                               Reporting Control
                                                                                                                                                       Unknown LAI
                                 subscriber       subscriber


                                                                                                                         Wait_For_Location
                               Page MS          Page MS                                                                                              Page MS
                                                                            Page MS                                      _Report
                               negative         negative                                                                                             negative
                               response         response                    ack
                                                                                                                                                     response


                                                                                                                             Location
                                                                                                                             Report




                                                                                                              No
                                                                                                                           SAI
                                                                                                                           received ?

                                                                                               Set negative
                                                                                                 response:                Yes
                                                                                               Unknown LAI


                                                                                                                     Page MS
                                                                                                                     Ack
                                                                                              Page MS
                                                                                              negative
                                                                                              response




                                                                            CR page 7
Procedure Current_Location_Page_MSC                                                                                             CLPage_M1(1)
Procedure in the MSC                                                                                              Signals to/from the left
to page an MS in a specified                                                                                      are to/from the BSS;
location area for Active                                                                                          signals to/from the right
Location Retrieval                                                                                                are to/from the VLR
                                                                                                                  unless marked otherwise




                                                                        No
                                                        Location
                                                        area ID
                                                        known?
                                                               Yes

                                                           MS
                                                       connection
                                                         exists?
                                                                                                             Yes
                                                               No

                                                  No
                                                                             Paging via
                                                                             SGSN possible?

                                                               Yes


  In specified                                    Page MS
                                   Page
  location area                                   via SGSN




                                                       Start Page
                                                       response
                                                          timer



                                                       Wait_For_
                                                        Page_
                                                       Response



                                                                                               Yes
                                                        Page response            MS
  For circuit-                     CM Service                                                          GSM
                                                        timer                    connection
  switched call                    Request                                                            Access?
                                                        expired                  established
                                                                                                             No


  To process                   CM Service                                        Release
  OCH_MSC                      Request                                           transaction




                                  Set negative         Set negative                                  Set negative              Set negative
                                   response:            response:                                     response:                 response:
                                      Busy                Absent                                         Busy                  Unknown LAI
                                   subscriber           subscriber                                    subscriber



                               Page MS            Page MS                                        Page MS                    Page MS
                                                                             Page MS
                               negative           negative                                       negative                   negative
                                                                             ack
                               response           response                                       response                   response




                                            Figure 64: Procedure Current_Location_Page_MSC




                                                                             CR page 8

				
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