CN102752879B - session access method and device - Google Patents
session access method and device Download PDFInfo
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- CN102752879B CN102752879B CN201210081769.1A CN201210081769A CN102752879B CN 102752879 B CN102752879 B CN 102752879B CN 201210081769 A CN201210081769 A CN 201210081769A CN 102752879 B CN102752879 B CN 102752879B
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Abstract
The invention discloses a kind of session access method and device, Interrogating Call conversation control entity, wherein, Interrogating Call conversation control entity I-CSCF storage herd number and described herd number belong to the incidence relation between CSCF; Described method comprises: when described I-CSCF receives session request, at the call conversation control entity CSCF of self memory block inquiry called number ownership, and to the CSCF forwarded call request that the called number inquired belongs to, realizes session access.The present invention can reduce the information interaction between I-CSCF and HSS effectively, decrease network traffics, accelerate the access speed of session, even if session access also can be realized between HSS fault or I-CSCF and HSS during network failure, considerably increase the access success rate of session flow process.
Description
Technical field
The present invention relates to session access technology, particularly relate to a kind of session access method and device.
Background technology
IP Multimedia System (IMS, IP Multimedia Core Network Subsystem) be third generation partnership (3GPP, 3rd Generation Partnership Project) the next generation network standard that defines, its distinguishing feature have employed session initiation protocol (SIP, Session Initial Protocol) system, its communication is irrelevant with access, possess multimedia service controlling functions to be separated with bearing capacity, calling and service detach, application is separated with service, business and network detach, and the multi abilities such as mobile network and internet service fusion.
Functional entity main in IMS comprises control user registration, call conversation control entity (the CSCF of the functions such as session control, Call Session Control Function), agent call conversation control entity (Proxy-CSCF, be called for short P-CSCF), Interrogating Call conversation control entity (I-CSCF, Interrogating-CSCF), home calling conversation control entity (Serving-CSCF, be called for short S-CSCF), home subscriber server (the HSS of centralized management user contracting data, Home Subscriber Server), application server (the AS of miscellaneous service logic control function is provided, Application Server).Interconnection boundary Control function (IBCF is also related in addition in conversation procedure, Interconnection Border ControlFunction), the functional entity such as signing locator function (SLF, Subscription Locator Function).
In IMS framework, I-CSCF needs to inquire about called ownership CSCF by LIR (Location Information Request)/LIA (Location Information Answer), and wherein user is registered or unregistered user.
Begin to exhale in flow process, I-CSCF needs the ownership CSCF address being obtained called number by inquiry HSS, and then completes whole call flow.
In prior art, when I-CSCF inquires about called number ownership CSCF, need to send LIR message to HSS, wait for the LIA message that HSS returns, and obtain the ownership CSCF network element of called number according to the AVP in LIA.If HSS is abnormal, call failure stops, and returns 503 response messages.
Fig. 1 is that IMS, to the process chart of user's request of making a call, as shown in Figure 1, comprises the following steps when HSS is abnormal:
S101, subscriber equipment (UE, User Equipment) sends initial session request message to P-CSCF;
The described initial session request message received is forwarded to S-CSCF by S102, P-CSCF;
Received described initial session request message is forwarded to I-CSCF by S103, S-CSCF;
S104, I-CSCF send LIR message (HSS is abnormal) to HSS;
S105, I-CSCF stop session, return stop response message i.e. 503 response messages to S-CSCF;
Received termination response message is forwarded to P-CSCF by S106, S-CSCF;
S107, P-CSCF forward session stop response message to UE.
Fig. 2 is the process chart to user's request of making a call in the IMS network of standard, as shown in Figure 2, comprises the following steps:
S201, UE send initial session request message to P-CSCF;
S202, P-CSCF forward described initial session request message to S-CSCF;
S203, S-CSCF forward described initial session request message to I-CSCF;
S204, I-CSCF send LIR message to HSS;
S205, HSS send LIA message to I-CSCF;
S206, I-CSCF forward described initial session request message to terminating S-CSCF;
S207, terminating S-CSCF forwards described initial session request message to called P-CSCF;
S208, called P-CSCF forward described initial session request message to the other side UE;
S209, session establishment, the other side UE returns conversational response message (200OK) to called P-CSCF;
S210, called P-CSCF forward described conversational response message to terminating S-CSCF;
S211, terminating S-CSCF forwards described conversational response message to I-CSCF;
S212, I-CSCF forward described conversational response message to originating S-CSCF;
S213, originating S-CSCF forwards described conversational response message to caller P-CSCF;
S214, caller P-CSCF forward described conversational response message to UE.
Make a call in flow process as can be seen from above-mentioned user, I-CSCF, when inquiring about called number home network element, is bound to send LIR request message to HSS, and waits for the LIA response of HSS.The Network Abnormal between machine or I-CSCF and HSS and if HSS delays, the process of IMS to user's request of making a call can process failure.The typical problem of this defect is exactly that I-CSCF inquiry called number has very strong dependency to HSS, and interacting message can increase extra network traffics and understand suspended call under abnormal scene.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of session access method and device, time the herd number that stores by means of only I-CSCF self and the incidence relation of CSCF that belongs to of this herd number can realize session and access, need not HSS be depended on.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of session access method, I-CSCF storage herd number and described herd number belong to the incidence relation between CSCF; Described method comprises:
When described I-CSCF receives session request, at the CSCF of self memory block inquiry called number ownership, and to the CSCF forwarded call request that the called number inquired belongs to, realize session access.
Preferably, described method also comprises:
Described I-CSCF fails to inquire the CSCF of called number ownership during in self memory block, send the request of the CSCF of inquiry called number ownership to home subscriber server HSS;
When inquiring the CSCF of called number ownership, to the CSCF forwarded call request of the called number ownership inquired, realize session access; When not inquiring the CSCF of called number ownership, stop session.
Preferably, described method also comprises:
When described I-CSCF receives the 200OK response message of user's registration, record herd number and described herd number belong to the incidence relation between CSCF, and store.
Preferably, the information of incidence relation between herd number and ownership CSCF is stored in its data storehouse or buffer memory or sets the setting memory block of memory or memory by described I-CSCF.
Preferably, described method also comprises:
When described I-CSCF receives the CSCF of called number ownership of the inquiry that described HSS sends, record called number and this called number belong to the incidence relation between CSCF, and store.
Preferably, described method also comprises:
When user need send out subscription (Subscribe), session (Invite), message (Message) or inquire about the business of (Option), send session request to described I-CSCF.
A kind of session access device, comprises memory cell, receiving element, query unit and transmitting element; Wherein:
Memory cell, belongs to incidence relation between CSCF for storing herd number and described herd number;
Receiving element, for receiving session request;
Query unit, for after described receiving element receives session request, at the CSCF of described storage unit query called number ownership;
Transmitting element, for the CSCF forwarded call request to the called number ownership inquired, to realize session access.
Preferably, described device also comprises abort unit, for stopping session;
Described query unit is when described memory cell fails the CSCF inquiring called number ownership, and described transmitting element is also for sending the request of the CSCF of inquiry called number ownership to HSS;
Described query unit is when described HSS inquires the CSCF of called number ownership, and described transmitting element, also for the CSCF forwarded call request to the called number ownership inquired, accesses to realize session;
Described query unit when described HSS inquires the CSCF of called number ownership, does not trigger described abort unit, stops session.
Preferably, described receiving element also for, when receiving the 200OK response message of user's registration, trigger described unit records herd number and described herd number and belong to incidence relation between CSCF, and store.
Preferably, described memory cell is the setting memory block of database or buffer memory or setting memory or memory.
Preferably, described receiving element also for, when receiving the CSCF of called number ownership of the inquiry that described HSS sends, trigger described unit records called number and this called number and belong to incidence relation between CSCF, and store.
A kind of Interrogating Call conversation control entity, comprises aforesaid session access device.
In the present invention, in IP Multimedia System calling procedure, incidence relation between CSCF is belonged to by storing herd number and described herd number in I-CSCF, when I-CSCF receives session request, at the CSCF of the memory block of this I-CSCF inquiry called number ownership, and to the CSCF forwarded call request that the called number inquired belongs to, realize session access.The present invention can reduce the information interaction between I-CSCF and HSS effectively, decrease network traffics, accelerate the access speed of session, even if session access also can be realized between HSS fault or I-CSCF and HSS during network failure, considerably increase the access success rate of session flow process.
Accompanying drawing explanation
Fig. 1 is that IMS is to the process chart of user's request of making a call when HSS is abnormal;
Fig. 2 is the process chart to user's request of making a call in the IMS network of standard;
Fig. 3 is the data cached process chart of the registration of the embodiment of the present invention;
Fig. 4 is the session access process figure of the embodiment of the present invention;
Fig. 5 is the composition structural representation of the session access device of the embodiment of the present invention.
Embodiment
Basic thought of the present invention is: in I-CSCF, store herd number and described herd number belong to incidence relation between CSCF, when I-CSCF receives session request, at the CSCF of the memory block of this I-CSCF inquiry called number ownership, and to the CSCF forwarded call request that the called number inquired belongs to, realize session access.
For making object of the present invention, technical scheme and advantage are clearly understood, by the following examples also with reference to accompanying drawing, the present invention is described in more detail.
Fig. 3 is the data cached process chart of the registration of the embodiment of the present invention, in Fig. 3, describes I-CSCF buffer memory herd number and this herd number in user registration course and belongs to the process of associated data between CSCF; The handling process that the registration of this example is data cached comprises the following steps:
S301, UE send user's login request message to P-CSCF;
S302, P-CSCF forward user's login request message to I-CSCF;
S303, I-CSCF send user-authorization-request (UAR, User Authorization Request) message to HSS;
S304, HSS send subscriber authorisation response (UAA, User Authorization Answer) message to I-CSCF;
S305, I-CSCF forward user's login request message to S-CSCF;
S306, S-CSCF send user's registration reply message (200OK response message) to I-CSCF;
The 200OK response message that S307, I-CSCF return according to S-CSCF carries out data buffer storage;
Concrete, according to the PAI head in 200OK response message, obtain all herd numbers, set up herd number and herd number and belong to incidence relation between CSCF, and carry out this locality storage.Wherein, local storage refers to that database purchase or internal memory Cache buffer memory or setting memory store or memory setting regions stores.
S308, I-CSCF forward user's registration reply message (200OK response message) to P-CSCF;
S309, P-CSCF forward user's registration reply message (200OK response message) to UE.
Fig. 4 is the session access process figure of the embodiment of the present invention, in Fig. 4, to describe in calling procedure I-CSCF network element to the acceleration processing procedure of call request, and the session access of this example comprises the following steps:
S401, UE send initial session request message to P-CSCF;
S402, P-CSCF forward above-mentioned initial session request message to S-CSCF;
S403, S-CSCF forward above-mentioned initial session request message to I-CSCF;
S404, I-CSCF read local cache data, obtain the ownership CSCF of called number.
If I-CSCF correctly can obtain ownership CSCF, carrying out LIR/LIA with HSS alternately with regard to not needing, which reducing network traffics, adding the processing speed of session access.
If I-CSCF correctly can not obtain the ownership CSCF of called number in this locality, also need to proceed LIR/LIA mutual (may unregistered service be there is) with HSS, to obtain the ownership CSCF of called number.
If I-CSCF inquires the ownership CSCF of called number by HSS, then record called number and this called number belong to the incidence relation between CSCF, and are stored in the corresponding memory block of I-CSCF.
S405, I-CSCF forward initial session request message to terminating S-CSCF;
S406, terminating S-CSCF forwards initial session request message to called P-CSCF;
S407, called P-CSCF forward initial session request message to UE;
S408, session establishment, UE sends conversational response message (200OK) to called P-CSCF;
S409, called P-CSCF forward conversational response message to terminating S-CSCF;
S410, terminating S-CSCF forwards conversational response message to I-CSCF;
S411, I-CSCF forward conversational response message to originating S-CSCF;
S412, originating S-CSCF forwards conversational response message to caller P-CSCF;
S413, caller P-CSCF forward conversational response message to UE.
Fig. 5 is the composition structural representation of the session access device of the embodiment of the present invention, and as shown in Figure 5, the session access device of the embodiment of the present invention comprises memory cell 50, receiving element 51, query unit 52 and transmitting element 53; Wherein:
Memory cell 50, belongs to incidence relation between CSCF for storing herd number and described herd number;
Receiving element 51, for receiving session request;
Query unit 52, for after described receiving element 51 receives session request, at the CSCF of described storage unit query called number ownership;
Transmitting element 53, for the CSCF forwarded call request to the called number ownership inquired, to realize session access.
On the basis of the session access device shown in Fig. 5, session access device of the present invention also comprises abort unit (not shown in Fig. 5), for stopping session;
Described query unit 52 is when described memory cell 50 fails the CSCF inquiring called number ownership, and described transmitting element 53 sends the request of the CSCF of inquiry called number ownership to HSS;
Described query unit 52 is when described HSS inquires the CSCF of called number ownership, and described transmitting element 53, also for the CSCF forwarded call request to the called number ownership inquired, accesses to realize session;
Described query unit 52 when described HSS inquires the CSCF of called number ownership, does not trigger described abort unit, stops session.
It will be appreciated by those skilled in the art that abort unit not realizes the necessary parts of the basic object of session access device of the present invention, but arrange for the technical scheme optimizing session access device of the present invention.
Described receiving element 51 also for, when receiving the 200OK response message of user's registration, trigger described unit records herd number and described herd number and belong to incidence relation between CSCF, and store.
Described memory cell 50 is the setting memory block of database or buffer memory or setting memory or memory.
Described receiving element 51 also for, when receiving the CSCF of called number ownership of the inquiry that described HSS sends, trigger described memory cell 50 and record called number and this called number and belong to incidence relation between CSCF, and store.
It will be appreciated by those skilled in the art that the practical function of each processing unit in the session access device shown in Fig. 5 can refer to the associated description of aforementioned session access method and understands.It will be appreciated by those skilled in the art that the function of each processing unit in the session access device shown in Fig. 5 realizes by the program run on processor, also realize by concrete logical circuit.
The present invention also describes a kind of Interrogating Call conversation control entity, comprises the session access device shown in Fig. 5.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (10)
1. a session access method, is characterized in that, Interrogating Call conversation control entity I-CSCF stores the incidence relation between herd number and described herd number home calling conversation control entity CSCF; Described method comprises:
When described I-CSCF receives session request, inquire about according to herd number and the herd number incidence relation belonged between CSCF the call conversation control entity CSCF that called number belongs in self memory block, and to the CSCF forwarded call request that the called number inquired belongs to, realize session access.
2. method according to claim 1, is characterized in that, described method also comprises:
Described I-CSCF fails to inquire the CSCF of called number ownership during in self memory block, send the request of the CSCF of inquiry called number ownership to home subscriber server HSS;
When inquiring the CSCF of called number ownership, to the CSCF forwarded call request of the called number ownership inquired, realize session access; When not inquiring the CSCF of called number ownership, stop session.
3. method according to claim 1, is characterized in that, described method also comprises:
When described I-CSCF receives the 200OK response message of user's registration, record herd number and described herd number belong to the incidence relation between CSCF, and store.
4. method according to claim 2, is characterized in that, described method also comprises:
When described I-CSCF receives the CSCF of called number ownership of the inquiry that described HSS sends, record called number and this called number belong to the incidence relation between CSCF, and store.
5. the method according to any one of Claims 1-4, is characterized in that, described method also comprises:
When user need send out the business of subscribing to Subscribe, session Invite, message Message or inquiring about Option, send session request to described I-CSCF.
6. a session access device, is characterized in that, described device comprises memory cell, receiving element, query unit and transmitting element; Wherein:
Memory cell, belongs to incidence relation between CSCF for storing herd number and described herd number;
Receiving element, for receiving session request;
Query unit, for after described receiving element receives session request, inquires about according to herd number and the herd number incidence relation belonged between CSCF the CSCF that called number belongs in described memory cell;
Transmitting element, for the CSCF forwarded call request to the called number ownership inquired, to realize session access.
7. device according to claim 6, is characterized in that, described device also comprises abort unit, for stopping session;
Described query unit is when described memory cell fails the CSCF inquiring called number ownership, and described transmitting element is also for sending the request of the CSCF of inquiry called number ownership to HSS;
Described query unit is when described HSS inquires the CSCF of called number ownership, and described transmitting element, also for the CSCF forwarded call request to the called number ownership inquired, accesses to realize session;
Described query unit when described HSS inquires the CSCF of called number ownership, does not trigger described abort unit, stops session.
8. device according to claim 6, it is characterized in that, described receiving element also for, receive user registration 200OK response message time, trigger described unit records herd number and described herd number and belong to incidence relation between CSCF, and store.
9. device according to claim 7, it is characterized in that, described receiving element also for, receive described HSS send inquiry called number ownership CSCF time, trigger described unit records called number and this called number and belong to incidence relation between CSCF, and store.
10. an Interrogating Call conversation control entity, is characterized in that, described Interrogating Call conversation control entity comprises the session access device described in any one of claim 6 to 9.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104767709B (en) * | 2014-01-02 | 2018-08-10 | 中国移动通信集团北京有限公司 | A kind of method and device blocking the calling of IMS service exceptions |
| CN106162733B (en) * | 2015-04-21 | 2019-05-10 | 中国移动通信集团河南有限公司 | A kind of abnormal flow suppressing method and device |
| CN109995721B (en) | 2017-12-29 | 2021-10-22 | 华为技术有限公司 | Service request processing method, device and communication system |
| CN110677844B (en) * | 2018-07-03 | 2022-04-08 | 中国电信股份有限公司 | Calling method, information interaction method, communication equipment and interaction platform |
| CN114070823B (en) * | 2021-11-10 | 2023-11-03 | 北京挪拉斯坦特芬通信设备有限公司 | Session establishment control method, electronic device, and computer-readable storage medium |
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