CN1585314A - Processing method for inquiring service zone tags - Google Patents

Abstract

The method is used in asking SGSN for user's positioning information at the state of PMM IDLE, includes following steps: a) MSC/VLR sends a MS Information Request to SGSN (IMSL, Information Type); b) if the user is at idle state, then SGSN originates a paging process; c) MS originates a service request process after receiving the paging message and rebuilds Iu interface; d) after the service request is ended SGSN sends a MS Information Request (IMSI, Information ) to MSC/VLR.

Description

A kind of processing method of asking Service Area Identifier

Technical field

The present invention relates to the WCDMA mobile communication system, relate in particular to MSC/VLR under the PMM IDLE attitude by the implementation method of MS INFORMATION process to SGSN request customer position information.

Background of invention

In the WCDMA system, a legal contracted user can adhere in packet domain and circuit domain by uniting the method for adhering to simultaneously simultaneously, and just set up a kind of incidence relation between circuit domain entity MSC/VLR and the packet domain entity SGSN this moment on Gs interface.Unite the user who adheres at this, MSC/VLR can obtain user's relevant information, for example user position information by Gs interface process MS INFORMATION.

For uniting the user who adheres to, MSC/VLR can initiate MS INFORMATION process at any time to obtain user position information.For attached to the user in the 2G Access Network, the positional information in the MS INFORMATION response message represents with the sub-district sign, and for attached to the user in the 3G Access Network, the positional information in the response message is with service area sign (SAI) expression.For the situation of 3G, existing implementation as shown in Figure 1, following description:

1:MSC/VLR to SGSN send a MS Information Request (IMSI, InformationType), cell wherein " Information Type " instruct MS C/VLR information requested type is customer position information here;

2: under the Iu pattern, if this user exists Iu to connect, SGSN will utilize the position message flow process to obtain user's SAI information (the further information about the position message flow process sees also 3GPP 25.413 agreements).If the UTRAN node can not obtain user's SAI, it will indication request can not satisfy in the report message of position, and optionally report SAI and the corresponding timestamp of this user's last time;

3:SGSN to MSC/VLR send a MS Information Response (IMSI, Information), cell " Information " comprises the MSC/VLR information requested, is customer position information here, i.e. SAI; Under the Iu pattern, if there is the Iu interface in this user, if the UTRAN node can't be determined user SAI in the position message flow process, and not to the current SAI of SGSN report of user and last time SAI, SGSN should comprise SAI and the corresponding timestamp that user that SGSN preserves reported last time at MS Information Response.

Yet the shortcoming of prior art is: clearly be not defined under the PMM IDLE attitude, just do not have how to obtain user SAI information under the situation of Iu interface.At this situation SGSN multiple choices are arranged, for example directly return MS Information Response message to MSC/VLR, SGSN comprises SAI and corresponding timestamp that user that SGSN preserves reported last time, though can obtain the more accurate positional information of user by additive method.But because protocol description is indeterminate, the diversity that can cause SGSN to realize produces the problem that quality of services for users descends that offers simultaneously.

Summary of the invention

The present invention is directed to above-described problem, propose a kind of clear and definite implementation that utilizes, guarantee that SGSN provides accurate customer position information to MSC/VLR.

A kind of processing method of asking Service Area Identifier comprises the following steps:

A, MSC/VLR send MS Information Request to SGSN, and it comprises cell Information Type;

Do b, SGSN judge that the user is in the IDLE attitude? if, then initiate the paging flow process, send beep-page message to MS, enter step c; If not, then handle according to existing procedure;

C, MS initiate Service Request flow process, set up the Iu interface;

D, SGSN send MS Information Response message to MSC/VLR, and comprising the Information cell, this Information cell comprises the customer position information that SGSN obtains in Service Request flow process.

Cell among the described step a " Information Type " instruct MS C/VLR information requested type.

Described information type is a customer position information.

Paging flow process among the described step b comprises the following steps:

B1, SGSN send Paging Request message to UTRAN;

B2, UTRAN send Paging message to MS.

Described step c further comprises:

C1, MS receive the beep-page message that RNC sends;

C2, MS initiate the RRC process of reconstruction;

C3, MS send service request message to SGSN, comprise Service Type cell;

C4, SGSN are by the legitimacy of safe procedures checking travelling carriage.

Utilize technical scheme of the present invention, can bring following beneficial effect:

1: the consistency that guarantees the SGSN implementation;

2: the accuracy that the customer position information that provides to MSC/VLR is provided;

3: avoid initiating the position message process once more after the paging, alleviated network burden.

Description of drawings

MS Information flow process under the connected state when Figure 1 shows that the 3G situation;

MS Information flow process under the IDLE attitude when Figure 2 shows that the 3G situation;

Fig. 3 is the schematic diagram of Service Request flow process of the present invention.

Embodiment

The present invention is directed to the problems of the prior art, propose a kind of clear and definite implementation that utilizes, guarantee that SGSN provides accurate customer position information to MSC/VLR.

MS Information flow process under the IDLE attitude when Figure 2 shows that the 3G situation, this paper has proposed following solution at the problem that prior art exists:

1:MSC/VLR sends a MS Information Request (IMSI to SGSN, InformationType), cell wherein " Information Type " instruct MS C/VLR information requested type, here be customer position information, the structure of this message can be as shown in the table, and each cell concrete structure is referring to the corresponding chapters and sections of 3GPP29018 agreement:

Information?Element	Type/Reference	??Presence	??Format	??Length
					Message?type	Message?type 18.2	????M	????V	????1
IMSI	IMSI 18.4.10	????M	????TLV	????6-10
					MM?information	MM?information 18.4.16	????O	????TLV	????3-n

2, SGSN judges whether User Status is IDLE, if not, then handle, if then enter step 3 according to normal flow; Normal flow is consistent with front description of the prior art.

3:SGSN sends paging request message according to relevant informations such as the current resident route district of travelling carriage, RNC to MS;

4:MS receives after the beep-page message, initiates Service Request flow process, the flow process of Service Request as shown in Figure 3, detailed process is described below:

41) travelling carriage receives the beep-page message that RNC sends;

42) Mobile Origination RRC process of reconstruction; At this moment should not have RRC to connect in principle, if having then be that RRC corresponding to the CS territory connects (just with MSC be connected) certainly, at this moment MSC should have more direct method to obtain the SAI of travelling carriage, also just can not obtain by SGSN.

43) after reconstruction RRC connected, travelling carriage sent service request message to SGSN, comprises cells such as PTMSI, CKSN, Service Type, and wherein the indication of Service Type cell is a page response;

44) SGSN is by the legitimacy of safe procedures checking travelling carriage;

Service Request flow process ends up being successfully sign with safe procedures.Because the Service Request message of this moment is the Init UE primitive message bearing by the RANAP layer between RNC and the SGSN, has comprised the current service area information of travelling carriage in the InitUE primitive.Therefore, after Service Request flow process finished, SGSN just obtained the travelling carriage accurate information of the lane place at place at that time.The structure of Init UE primitive message header is as follows, and each cell concrete structure is referring to 3GPP 25413 agreement related Sections (note wherein comprise SAI, just service area sign cell):

IE/Group?Name	?Presence	??Range	????IE?type?and ????reference	??Semantics ??description	?Criticality	?Assign ?ed ?Critical ?ity
							Message?Type	?M		????9.2.1.1		?YES	?ignore
CN?Domain?Indicator	?M		????9.2.1.5		?YES	?ignore
							LAI	?M		????9.2.3.6		?YES	?ignore
RAC	?C-ifPS		????9.2.3.7		?YES	?ignore
							SAI	?M		????9.2.3.9		?YES	?ignore
NAS-PDU	?M		????9.2.3.5		?YES	?ignore
							Iu?Signalling?Connection Identifier	?M		????9.2.1.38		?YES	?ignore
Global?RNC-ID	?M		????9.2.1.39		?YES	?ignore

5:SGSN sends a MS Information Response (IMSI to MSC/VLR, Information), cell " Information " comprises the customer position information that SGSN obtains in Service Request flow process, do not comprise timestamp information, and need not to initiate once more the position message flow process in the location drawing 1.The structure of this message is as shown in the table, especially, under the 3G situation, MS Information Response message for the triggering of MSC/VLR request customer position information, the essential cell in message (type of message, IMSI), only may comprise Location Information Age, Mobile Station State and these 3 cells of ServiceArea Indication, the concrete structure of these cells is referring to 3GPP 29018 agreement related Sections.

?Information?Element	?Type/Reference	????Presence	????Format	????Length
					?Message?type	?Message?type ?18.2	????M	????V	????1
?IMSI	?IMSI ?18.4.10	????M	????TLV	????6-10
					?TMSI	?TMSI ?18.4.23	????O	????TLV	????6
?PTMSI	?PTMSI ?18.4.20	????O	????TLV	????6
					?IMEI	?IMEI ?18.4.8	????O	????TLV	????10
?IMEISV	?IMEISV ?18.4.9	????O	????TLV	????10
					?Cell?global?identity	?Cell?global?identity ?18.4.1	????O	????TLV	????10
?Location?information?age	?Location?information?age ?18.4.15	????O	????TLV	????4
					?Mobile?station?state	?Mobile?station?state ?18.4.19	????O	????TLV	????3
?Service?area?identification	?Service?area?identification ?18.4.21b	????O	????TLV	????9

Utilize technical scheme of the present invention, its beneficial effect is as follows:

1: the uniformity that has guaranteed the SGSN implementation;

2: the accuracy that the customer position information that provides to MSC/VLR has been provided;

3: avoided after the paging again launch position reporting process, alleviated network burden;

Utilize the present invention, guaranteed the accuracy of the customer position information that SGSN provides to MSC/VLR, on this basis, improved efficient, alleviated network burden.

Claims (5)

1, a kind of processing method of asking Service Area Identifier is characterized in that comprising the following steps:

A, MSC/VLR send MS Information Request to SGSN, and it comprises cell InformationType;

Do b, SGSN judge that the user is in the IDLE attitude? if, then initiate the paging flow process, send beep-page message to MS, enter step c; If not, then handle according to existing procedure;

C, MS initiate Service Request flow process, set up the Iu interface;

D, SGSN send MS Information Response message to MSC/VLR, and comprising the Information cell, this Information cell comprises the customer position information that SGSN obtains in Service Request flow process.

2, a kind of processing method of asking Service Area Identifier as claimed in claim 1 is characterized in that: the cell among the described step a " Information Type " instruct MS C/VLR information requested type.

3, a kind of processing method of asking Service Area Identifier as claimed in claim 2, it is characterized in that: described information type is a customer position information.

4, a kind of processing method of asking Service Area Identifier as claimed in claim 1, it is characterized in that: the paging flow process among the described step b comprises the following steps:

B1, SGSN send Paging Request message to UTRAN;

B2, UTRAN send Paging message to MS.

5, a kind of processing method of asking Service Area Identifier as claimed in claim 1 is characterized in that described step c further comprises:

C1, MS receive the beep-page message that RNC sends;

C2, MS initiate the RRC process of reconstruction;

C3, MS send service request message to SGSN, comprise Service Type cell;

C4, SGSN are by the legitimacy of safe procedures checking travelling carriage.

Images