CN100558116C - A kind of method of route subscription request message - Google Patents

A kind of method of route subscription request message Download PDF

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Publication number
CN100558116C
CN100558116C CN200610078583.5A CN200610078583A CN100558116C CN 100558116 C CN100558116 C CN 100558116C CN 200610078583 A CN200610078583 A CN 200610078583A CN 100558116 C CN100558116 C CN 100558116C
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Prior art keywords
cscf
request message
address
subscription request
registration
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Expired - Fee Related
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CN200610078583.5A
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CN1968291A (en
Inventor
欧阳振华
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN200610078583.5A priority Critical patent/CN100558116C/en
Priority to PCT/CN2007/001461 priority patent/WO2007131433A1/en
Publication of CN1968291A publication Critical patent/CN1968291A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/14—Mobility data transfer between corresponding nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention discloses a kind of method of route subscription request message, initiate to subscribe in order to solve present P-CSCF, must be based on the problem of SIP-URI as the default format of IMPU.Lower in order to the router efficiency that solves present P-CSCF initiation subscription simultaneously, expend the bigger problem of Internet resources.The inventive method comprises: after A, the user registration success, P-CSCF receives the message that succeeds in registration of carrying the S-CSCF address, and sends subscription request message to network side, carries the address of the S-CSCF of this user's registration in the described subscription request message; B, network side are finished route with the S-CSCF address of carrying in the subscription request message.By the enforcement of the inventive method, no matter the default format of IMPU is SIP-URI or TEL-URI, all need not carry out DNS and HSS inquiry, obviously improved router efficiency, also saved Internet resources.

Description

A kind of method of route subscription request message
Technical field
The present invention relates to field of wireless, particularly relate to a kind of method of route subscription request message.
Background technology
IMS is based on an independent sessions territory of CSCF (the Call session Control Function) control of Session Initiation Protocol, the 3GPP complete definition interface of IMS, networking and operation flow.
Below introduce the main business of IMS:
1, registration: IMS user must at first register if carry out session.The process of registration is exactly the process that customer location is registered on network.
2, P-CSCF to the subscription of user's login state: P-CSCF after receiving the message that succeeds in registration, need subscribe to the IMPU state of user's registration, and must send subscription request message (Subscriber message) earlier to S-CSCF according to Session Initiation Protocol: P-CSCF; After subscription was finished, when user's login state changed, P-CSCF can receive the notice of cancellation that network side issues; P-CSCF needs according to notice of cancellation, and timely logging off users data are to keep the consistency of user registration state in the network.
3, network-initiated deregistration: owing to subscription data change, arrearage, registration timeout or other managerial reason, network side can issue Notify message (notice of cancellation) according to local policy, and P-CSCF nullifies user data with notice.
Existing P-CSCF referring to shown in Figure 1, comprises following key step to the route flow process of network side subscription registration state:
After step 1:P-CSCF receives 200 message (content of 200 message that succeed in registration is referring to table one) that succeed in registration, therefrom extract and preserve the IMPU (user1_public1@home1.net) of user default; And described IMPU is filled up among the Request-URI and To header field of subscription request message (content of subscription request message is referring to table two).Described IMPU is necessary for the SIP-URI form.
According to the regulation of Session Initiation Protocol, the subscription request message that P-CSCF sends is carried out route according to Request-URI.Because IMPU is SIP-URI form (sip:user1_public1@home1.net), then the Session Initiation Protocol stack can use home1.net partly to carry out the DNS inquiry, to obtain the address of inquiry session controlled function entity I-CSCF in the home domain.
Step 2:P-CSCF sends to I-CSCF according to the address of the I-CSCF that obtains with described subscription request message.
Step 3:I-CSCF obtains the address of the S-CSCF of user's registration by inquiry home signature user server HSS.
Step 4:I-CSCF sends to S-CSCF according to the address of the S-CSCF that obtains with described subscription request message.
After step 5-6:S-CSCF receives subscription request message, return 200 message, arrive P-CSCF by I-CSCF.
Step 7:S-CSCF takes out the IMPU that P-CSCF requires subscription from the TO header field, the login state that relative users is current is carried in the subscription response message, sends to P-CSCF.
After step 8:PCSCF receives subscription response message, return 200 success responses.
SIP/2.0?200?OK
Via：
Path：
Service-Route：<sip:orig@scscf1.home1.net；lr>
From：
To：
Call-ID：
Contact：<sip:[5555::aaa:bbb:ccc:ddd]:1357；comp＝sigcomp>；expires＝600000
CSeq：
Date：Wed，11?July?2001?08:49:37?GMT
P-Associated-URI：<sip:user1_public1@home1.net>，<sip:user1_public2@home1.net>， <sip:+1-212-555-1111@home1.net；user＝phone>
Content-Length：
Table one
SUBSCRIBE?sip:user1_public1@home1.net?SIP/2.0
Via：SIP/2.0/UDP?pcscf1.visited1.net；branch＝z9hG4bK240f34.1
Max-Forwards：70
P-Asserted-Identity：<sip:pcscf1.visited1.net>
Privacy：none
From：<sip:pcscf1.visited1.net>；tag＝31415
To：<sip:user1_public1@home1.net>
Call-ID：dre36d2v32gnlgiiomm72445
CSeq：61?SUBSCRIBE
Event：reg
Expires：600000
Accept：application/reginfo+xml
Contact：<sip:pcscf1.visited1.net>
Table two
The route flow process that sends subscription request message to network side by above-mentioned existing P-CSCF is as can be known:
Owing to, need carry out the DNS inquiry to user's IMPU, so IMPU is necessary for the SIP-URI form in the starting stage of route; If default IMPU be the Tel-URI form (for example: tel:+358-555-1234567), then can't carry out route.
And, when P-CSCF initiates to subscribe to, need carry out DNS and HSS inquiry, so just reduced efficient, also expended Internet resources simultaneously.
Summary of the invention
The invention provides a kind of method of route subscription request message, initiate to subscribe in order to solve present P-CSCF, must be based on the problem of SIP-URI as the default format of IMPU.Lower in order to the router efficiency that solves present P-CSCF initiation subscription simultaneously, expend the bigger problem of Internet resources.
The inventive method comprises: after A, the user registration success, P-CSCF receives that S-CSCF by described user's registration sends carries the message or receive the message that succeeds in registration of carrying the described S-CSCF address after the encryption that is sent by I-CSCF of succeeding in registration of described S-CSCF address, and network side sends subscription request message, carries described S-CSCF address B in the described subscription request message, network side is finished route with the S-CSCF address of carrying in the subscription request message.
If do not adopt the route Stealth Modus, comprise in the then described steps A:
After A11, the user registration success, the S-CSCF of this user's registration sends the message that succeeds in registration that carries this S-CSCF address to P-CSCF; A12, P-CSCF therefrom extract the address of the S-CSCF of described user's registration; A13, P-CSCF are carried on the address of described S-CSCF in the subscription request message, and send to network side.
Among the described step B, the S-CSCF address of network side to carry in the subscription request message directly is routed to corresponding S-CSCF with this subscription request message.The address of described S-CSCF is carried in the route header field of subscription request message.
If adopt the route Stealth Modus, comprise in the then described steps A:
After A21, the user registration success, the S-CSCF of this user's registration sends the message that succeeds in registration that carries this S-CSCF address to I-CSCF; A22, the I-CSCF S-CSCF address encryption in the message that will succeed in registration, and this I-CSCF address added the described message that succeeds in registration, transmit to P-CSCF; S-CSCF address and I-CSCF address after A23, P-CSCF will encrypt are carried in the subscription request message, and send to network side.
Comprise among the described step B:
B21, the I-CSCF S-CSCF address after to the encryption in the subscription request message is decrypted;
B22, I-CSCF are routed to corresponding S-CSCF with the S-CSCF address after deciphering with this subscription request message.
The address of described I-CSCF is carried in the route header field of subscription request message.
Also carry described user's public identifier IMPU in the described subscription request message and the message that succeeds in registration.Described IMPU comprises: Session initiation Protocol universal resource identifier SIP URI and phone universal resource identifier TEL URI.
After comprising that also step: C1, described S-CSCF receive subscription request message after the described step B, therefrom extract IMPU; C2, described S-CSCF search the current login state of the user corresponding with IMPU from local terminal; C3, described login state is carried in the subscription response message, and sends, finished subscription to P-CSCF.
Beneficial effect of the present invention is as follows:
After the inventive method is utilized user registration success, the address of this S-CSCF that the S-CSCF of this user's registration carries in the message that succeeds in registration that P-CSCF sends, at P-CSCF when network side is initiated subscribe request, the address of in subscription request message, carrying described S-CSCF; Thereby make network side directly subscription request message to be routed to the S-CSCF of user's registration, to finish the subscription of P-CSCF according to the S-CSCF address of carrying in the subscription request message to user's login state.
Enforcement by the inventive method, need not carry out the DNS inquiry, subscription request message can be routed to S-CSCF, so even the default format of IMPU is TEL-URI, also can finish route, the default format that IMPU can not take place is the result that TEL-URI causes routing failure, so reached the technique effect that prior art does not have.
By the enforcement of the inventive method, no matter the default format of IMPU is SIP-URI or TEL-URI, all need not carry out DNS and HSS inquiry, obviously improved router efficiency, also saved Internet resources.
Description of drawings
Fig. 1 is the subscription route flow chart of existing P-CSCF;
Fig. 2 is the inventive method flow chart of steps;
Fig. 3 is the subscription route flow chart of P-CSCF of the present invention.
Embodiment
In order to make subscribe request compatibility that P-CSCF initiates with the default format of TEL-URI as IMPU, and in order to improve router efficiency and conserve network resources, the invention provides a kind of method of route subscription request message,, comprise following key step referring to shown in Figure 2:
S1, user registration success.
S2, P-CSCF encapsulate subscription request message.
S3, P-CSCF send subscription request message to network side.
S4, network side are routed to S-CSCF with subscription request message.
S5, S-CSCF return subscription response message, finish subscription.
Below specifically describe the inventive method by three examples.
Method example one:, do not finish subscription by I-CSCF with the default format of SIP-URI as IMPU.Referring to shown in Figure 3, this example comprises following concrete steps:
Step 1, at first the user after succeeding in registration in the IMS territory, the S-CSCF of user's registration can send the message that succeeds in registration (200OK message) of the IMPU (SIP-URI) that carries this S-CSCF address and this user to user side, and for example: this message can be referring to shown in the table three.Wherein the address of S-CSCF is carried in the Service-Route header field.
SIP/2.0?200?OK
Via：
Path：
Service-Route：<sip:orig@scscf1.home1.net；lr>
From：
To：
Call-ID：
Contact：<sip:[5555::aaa:bbb:ccc:ddd]:1357；comp＝sigcomp>；expires＝600000
CSeq：
Date：Wed，11?July?2001?08:49:37?GMT
P-Associated-URI：<sip:user1_public1@home1.net>，<sip:user1_public2@home1.net>， <sip:+1-212-555-1111@home1.net；user＝phone>
Content-Length：
Table three
After P-CSCF receives the described message that succeeds in registration, can from the Service-Route header field, extract the address of the S-CSCF of user's registration, i.e. sip:orig@scscfl.home1.net; Lr, and the IMPU that from the message that succeeds in registration, extracts this user, i.e. user1_public1@home1.net.
After extraction was finished, P-CSCF can utilize the information encapsulation subscription request message (Subscriber message) of extraction.This user's that P-CSCF will extract IMPU is filled up among the Request-URI and To header field of subscription request message, in order to the object of indication subscription; And the address of the S-CSCF of user's registration of extracting is filled up in the Route header field of subscription request message, in order to the destination address of indication route.Subscription request message after the encapsulation is referring to shown in the table four.
SUBSCRIBE?sip:user1_public1@home1.net?SIP/2.0
Via：SIP/2.0/UDP?pcscf1.visited1.net；branch＝z9hG4bK240f34.1
Max-Forwards：70
Route：<sip:orig@scscf1.home1.net；lr>
P-Asserted-Identity：<sip:pcscf1.visited1.net>
Privacy：none
From：<sip:pcscf1.visited1.net>；tag＝31415
To：<sip:user1_public1@home1.net>
Call-ID：dre36d2v32gnlgiiomm72445
CSeq：61?SUBSCRIBE
Event：reg
Expires：600000
Accept：application/reginfo+xml
Contact：<sip:pcscf1.visited1.net>
Table four
After encapsulation was finished, the subscription request message that P-CSCF will carry the address of S-CSCF of user registration and this user's IMPU sent to network side.Network side directly is routed to purpose S-CSCF with this message according to the address of the S-CSCF that carries in the subscription request message.Need not DNS in the way and the HSS inquiry, thus improve router efficiency and saved Internet resources.
So far finish the route of the subscription request message that P-CSCF sends.
Step 2, S-CSCF return 200OK after receiving described subscription request message, have received described subscription request message to inform P-CSCF.
Step 3, S-CSCF extract IMPU from Request-URI or To header field, and search the current login state of the user corresponding with IMPU from local terminal.Afterwards, described login state is carried in the subscription response message (Notify message), and sends to P-CSCF.P-CSCF can revise accordingly or nullify described user's log-on message according to the login state that carries in the subscription response message.
Step 4, P-CSCF return 200OK after receiving subscription response message, have received described subscription response message to inform S-CSCF.So far finished the subscription of P-CSCF to user's login state.
Afterwards, when described user's login state changes, described S-CSCF can initiatively send the subscription response message of the login state after carrying renewal to P-CSCF, guarantee that P-CSCF can in time revise or nullify this user's log-on message, to keep the consistency of user registration state in the network.
Method example two:, do not finish subscription by I-CSCF with the default format of TEL-URI as IMPU.Referring to shown in Figure 3, this example comprises following concrete steps:
Step 1, at first the user after succeeding in registration in the IMS territory, the S-CSCF of user's registration can send the message that succeeds in registration (200OK message) of the IMPU (TEL-URI) that carries this S-CSCF address and this user to user side, and for example: this message can be referring to shown in the table five.Wherein the address of S-CSCF is carried in the Service-Route header field.
SIP/2.0?200?OK
Via：
Path：
Service-Route：<sip:orig@scscf1.home1.net；lr>
From：
To：
Call-ID：
Contact：<sip:[5555::aaa:bbb:ccc:ddd]:1357；comp＝sigcomp>；expires＝600000
CSeq：
Date：Wed，11?July?2001?08:49:37?GMT
P-Associated-URI：<tel:+358-555-1234567>
Content-Length：
Table five
After P-CSCF receives the described message that succeeds in registration, can from the Service-Route header field, extract the address of the S-CSCF of user's registration, i.e. sip:orig@scscf1.home1.net; Lr, and the IMPU that from the message that succeeds in registration, extracts this user, i.e. tel:+358-555-1234567.
After extraction was finished, P-CSCF can utilize the information encapsulation subscription request message (Subscriber message) of extraction.This user's that P-CSCF will extract IMPU is filled up among the Request-URI and To header field of subscription request message, in order to the object of indication subscription; And the address of the S-CSCF of user's registration of extracting is filled up in the Route header field of subscription request message, in order to the destination address of indication route.Subscription request message after the encapsulation is referring to shown in the table six.
SUBSCRIBE?tel:+358-555-1234567?SIP/2.0
Via：SIP/2.0/UDP?pcscf1.visited1.net；branch＝z9hG4bK240f34.1
Max-Forwards：70
Route：<sip:orig@scscf1.home1.net；lr>
P-Asserted-Identity：<sip:pcscf1.visited1.net>
Privacy：none
From：<sip:pcscf1.visited1.net>；tag＝31415
To：<tel:+358-555-1234567>
Call-ID：dre36d2v32gnlgiiomm72445
CSeq：61?SUBSCRIBE
Event：reg
Expires：600000
Accept：application/reginfo+xml
Contact：<sip:pcscf1.visited1.net>
Table six
After encapsulation was finished, the subscription request message that P-CSCF will carry the address of S-CSCF of user registration and this user's IMPU sent to network side.Network side directly is routed to purpose S-CSCF with this message according to the address of the S-CSCF that carries in the subscription request message.Need not DNS in the way inquiry, thereby compatible with the default format of TEL-URI as IMPU; Need not DNS in the way and the HSS inquiry, thus improve router efficiency and saved Internet resources.
So far finish the route of the subscription request message that P-CSCF sends.
Step 2, S-CSCF return 200OK after receiving described subscription request message, have received described subscription request message to inform P-CSCF.
Step 3, S-CSCF extract IMPU from Request-URI or To header field, and search the current login state of the user corresponding with IMPU from local terminal.Afterwards, described login state is carried in the subscription response message (Notify message), and sends to P-CSCF.P-CSCF can revise accordingly or nullify described user's log-on message according to the login state that carries in the subscription response message.
Step 4, P-CSCF return 200OK after receiving subscription response message, have received described subscription response message to inform S-CSCF.So far finished the subscription of P-CSCF to user's login state.
Afterwards, when described user's login state changes, described S-CSCF can initiatively send the subscription response message of the login state after carrying renewal to P-CSCF, guarantee that P-CSCF can in time revise or nullify this user's log-on message, to keep the consistency of user registration state in the network.
Method example three: with the default format of SIP-URI, exist route to hide, finish subscription by I-CSCF as IMPU.This example comprises following concrete steps:
Step 11, at first the user is after succeeding in registration in the IMS territory, and the S-CSCF of user registration can send the message that succeeds in registration (200OK message) of the IMPU (SIP-URI) that carry this S-CSCF address and this user to user side.Wherein the address of S-CSCF is carried in the Service-Route header field; Because route is hidden, during by I-CSCF, I-CSCF can be added to the address of oneself in the Service-Route header field, and encrypts the address of S-CSCF.After finishing dealing with this message is issued P-CSCF.
After P-CSCF receives the described message that succeeds in registration, preserve Service-Route, and the IMPU that from the message that succeeds in registration, extracts this user.
After extraction was finished, P-CSCF can utilize the information encapsulation subscription request message (Subscriber message) of ServiceRoute and user's IMPU.This user's that P-CSCF will extract IMPU is filled up among the Request-URI and To header field of subscription request message, in order to the object of indication subscription; And the ServiceRoute that preserves is filled up in the Route header field of subscription request message.
After encapsulation was finished, the subscription request message that P-CSCF will carry the address of address, I-CSCF of the S-CSCF of the user registration after the encryption and this user's IMPU sent to network side.Network side is routed to purpose I-CSCF according to the address of the I-CSCF that carries in the subscription request message with this message.
After I-CSCF receives described subscription request message, the S-CSCF address after encrypting is decrypted, and is destination address, transmit described subscription request message to this S-CSCF with the S-CSCF address after the deciphering.
So far finish the route of the subscription request message that P-CSCF sends.
Step 12 is identical with step 2.
Step 13 is identical with step 3.
Step 14 is identical with step 4.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (10)

1, a kind of method of route subscription request message comprises the following steps:
After A, the user registration success, P-CSCF receives that S-CSCF by described user's registration sends carries the message or receive the message that succeeds in registration of carrying the described S-CSCF address after the encryption that is sent by I-CSCF of succeeding in registration of described S-CSCF address, and, carry described S-CSCF address in the described subscription request message to network side transmission subscription request message;
B, network side are finished route with the S-CSCF address of carrying in the subscription request message.
2, the method for claim 1 is characterized in that, if do not adopt the route Stealth Modus, comprises in the then described steps A:
After A11, the user registration success, the S-CSCF of this user's registration sends the message that succeeds in registration that carries this S-CSCF address to P-CSCF;
A12, P-CSCF therefrom extract the address of the S-CSCF of described user's registration;
A13, P-CSCF are carried on the address of described S-CSCF in the subscription request message, and send to network side.
3, method as claimed in claim 2 is characterized in that, among the described step B, the S-CSCF address of network side to carry in the subscription request message directly is routed to corresponding S-CSCF with this subscription request message.
4, method as claimed in claim 2 is characterized in that, the address of described S-CSCF is carried in the route header field of subscription request message.
5, the method for claim 1 is characterized in that, if adopt the route Stealth Modus, comprises in the then described steps A:
After A21, the user registration success, the S-CSCF of this user's registration sends the message that succeeds in registration that carries this S-CSCF address to I-CSCF;
A22, the I-CSCF S-CSCF address encryption in the message that will succeed in registration, and this I-CSCF address added the described message that succeeds in registration, transmit to P-CSCF;
S-CSCF address and I-CSCF address after A23, P-CSCF will encrypt are carried in the subscription request message, and send to network side.
6, method as claimed in claim 5 is characterized in that, comprises among the described step B:
B21, the I-CSCF S-CSCF address after to the encryption in the subscription request message is decrypted;
B22, I-CSCF are routed to corresponding S-CSCF with the S-CSCF address after deciphering with this subscription request message.
7, method as claimed in claim 5 is characterized in that, the address of described I-CSCF is carried in the route header field of subscription request message.
8, as each described method of claim 2 to 7, it is characterized in that, also carry described user's public identifier IMPU in the described subscription request message and the message that succeeds in registration.
9, method as claimed in claim 8 is characterized in that, described IMPU comprises: Session initiation Protocol universal resource identifier SIP URI and phone universal resource identifier TEL URI.
10, method as claimed in claim 9 is characterized in that, also comprises step after the described step B:
After C1, described S-CSCF receive subscription request message, therefrom extract IMPU;
C2, described S-CSCF search the current login state of the user corresponding with IMPU from local terminal;
C3, described login state is carried in the subscription response message, and sends, finished subscription to P-CSCF.
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