CN101572950A - Session establishment method and device for IP multimedia subsystem - Google Patents
Session establishment method and device for IP multimedia subsystem Download PDFInfo
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- CN101572950A CN101572950A CNA2008100882815A CN200810088281A CN101572950A CN 101572950 A CN101572950 A CN 101572950A CN A2008100882815 A CNA2008100882815 A CN A2008100882815A CN 200810088281 A CN200810088281 A CN 200810088281A CN 101572950 A CN101572950 A CN 101572950A
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Abstract
The embodiment of the invention discloses a session establishment method and a device for an IP multimedia subsystem, relating to the technical field of mobile communication, and solving the problems that under the condition that a signaling level has successful negotiation for an IMS session, connection is hung up because a current bearer channel cannot satisfy the requirements of a user who initiates a business request, thereby user experience becomes poor to cause resource waste. The embodiment of the invention provides the session establishment method for the IP multimedia subsystem, comprising the following steps: receiving a session establishment request; sending session establishment information to a strategy and charging regulation function entity according to the session establishment request; receiving a strategy made by the strategy and charging regulation function entity; and establishing session connection according to the strategy. With the adoption of the invention, the problem that the resource waste of the signaling level because the current bearer channel cannot satisfy the business requests of the user is solved.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to method and device that the IP Multimedia System session is set up.
Background technology
Along with the continuous development of the communication technology, various new wireless access wide band technologies continue to bring out, and the 3G system has been formed challenge.In order to guarantee 3GPP (The 3rd Generation Partnership Project, third generation partner plan) competitiveness, consider the Long Term Evolution of 3GPP access technology, the enhancing of 3GPP system capability, the lasting evolution of 3GPP system and optimization and the performance that improves the 3GPP system, reduce cost, 3GPP has proposed SAE (3GPP System Architecture Evolution, System Architecture Evolution) project.The purpose of Long Term Evolution is to reduce time delay, and higher user data rate, higher power system capacity and better covering are provided, and reduces the cost of operator.
In the prior art, 3GPP has proposed IMS (IP Multimedia Subsystem, IP Multimedia System) exports user data (Local breakout) in the roaming place method.Whether certain IMS session of user can be made a strategic decision by belonging area network by Local breakout, and a main foundation of decision-making is whether the IMS business that comprises in this IMS session allows Local breakout.
The user has the signatory of local breakout, therefore, this user can select PDN-GW in the roaming place, and sets up default bearer (default bearing), it is SIP (SessionInitial Protocol, conversation initialized protocol) message that this carrying is used to transmit the IMS signaling.
As shown in Figure 1, in prior art, the session initiator initiates a session request to session callee user, sets up the signaling transfer process figure of session; Suppose that the user initiates an IMS conversation request, the business that this request comprises is " stock exchange ".
1, the user initiates the Invite request, the type of service that comprises the IMS of request in this request message--" stock exchange ", this message arrives this user's P-CSCF (Proxy-CSCF ((Call Session ControlFunction, call conversation control function entity), proxy call conversation control function entity);
2, P-CSCF sends to S-CSCF (Serving-CSCF, service call session control function entity) with this invite request;
3, S-CSCF sends to the session callee with this message;
4～6, the session callee returns 200 OK message.After the step 6, the medium type that communicating pair is supported, both sides' IP address port number wait negotiations to finish, and the negotiation of signaling aspect finishes, the connection that the carrying aspect is set up in preparation;
7, P-CSCF sends to H-PCRF (Home Policy and Charging RulesFunction, ownership place "Policy and Charging Rules Function entity) with session information, is used to set up the dedicated bearer channel, and this Bearer Channel is used for media stream;
8, H-PCRF makes a strategic decision to session information, finds that the level of security of this IMS service needed is higher, does not allow the Media Stream route to be returned the possession network by the local gateway outlet, and promptly current carrying can not be satisfied the demand of IMS business;
9, H-PCRF returns refuse information to P-CSCF;
10, P-CSCF sends to the user according to refuse information and hangs up message, finishes this session;
11～12, P-CSCF sends to the session callee and hangs up message, finishes this session;
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art: the IMS session has been consulted under the case of successful in the signaling aspect, do not hang up connection owing to current Bearer Channel does not satisfy the requirement of initiating the service request user, make the user experience variation, cause the wasting of resources.
Summary of the invention
Method and device that embodiments of the invention provide a kind of IP Multimedia System session to set up.
For achieving the above object, embodiments of the invention adopt following technical scheme:
The method that a kind of IP Multimedia System session is set up comprises:
Receive session and set up request;
Set up request according to described session, send session establishment information to the "Policy and Charging Rules Function entity;
Receive the strategy that the "Policy and Charging Rules Function entity is formulated;
Set up session connection according to described strategy.
The device that a kind of IP Multimedia System session is set up comprises:
Receiving element: be used to receive the strategy that request and the formulation of "Policy and Charging Rules Function entity are set up in session;
Transmitting element: be used for setting up request, send session establishment information to the "Policy and Charging Rules Function entity according to described session;
Set up the session connection unit: be used for setting up session connection according to described strategy.
Method and device that the IP Multimedia System session that the embodiment of the invention provides is set up, set up request by the session that proxy call conversation control function entity receives, at first described session establishment information is sent to the "Policy and Charging Rules Function entity, described "Policy and Charging Rules Function entity is made judgement to the situation of the Bearer Channel that the business and the current media of user's request are transmitted, if the Bearer Channel of current media transmission can satisfy service request from user, then continue to finish the session negotiation process; If the Bearer Channel of current media transmission cannot satisfy service request from user; The "Policy and Charging Rules Function entity sends response message and sets up the terminal of request to sending session, and the Bearer Channel of "Policy and Charging Rules Function entity control deletion current media transmission; Set up request according to described session, the "Policy and Charging Rules Function entity is set up the Bearer Channel of new media delivery.Compared with prior art, the Bearer Channel that transmits in current media cannot satisfy under the service request from user, needn't carry out the negotiations process of Signaling Layer, has so just significantly reduced the waste of Signaling Layer resource, has improved user's experience.
Description of drawings
Fig. 1 is in the prior art, and the session initiator initiates a session request to session callee user, sets up the signaling transfer process figure of session;
The method flow diagram that Fig. 2 sets up for a kind of IP Multimedia System session that the invention process row provide;
The method flow diagram that Fig. 3 sets up for the another kind of IP Multimedia System session that the invention process row provide;
The apparatus structure schematic diagram that Fig. 4 sets up for a kind of IP Multimedia System session that the invention process row provide;
The apparatus structure schematic diagram that Fig. 5 sets up for the another kind of IP Multimedia System session that the invention process row provide;
Fig. 6 sets up the signaling transfer process figure of session connection for being initiated a session request to the called subscriber by session initiation user that the invention process row provide;
Fig. 7 a kind ofly sets up the signaling transfer process figure of session during for roaming state as the callee for what the invention process row provided;
The another kind that Fig. 8 provides for the invention process row is set up the signaling transfer process figure of session during for roaming state as the callee.
Embodiment
SAE in the 3GPP proposition, support user's roaming, when the user from a PLMN (Public Land MobileNetwork, when public land mobile net) roaming into another one PLMN, the user is connected with the Packet Data Network of outside by PDN-GW (PublicData Network Gateway, packet data gateway); All media informations of user all need to export by packet data network gateway.
The mode that media information exports by packet data network gateway has two kinds: a kind of, the user's data route is returned the possession, and export (home routed) by the ownership place packet data network gateway; Another kind, using the packet data network gateway of roaming place to export user data is local breakout (Localbreakout).
Therefore, the user uses local breakout form, than using home routed form to save Internet resources.
IMS (IP Multimedia Subsystem, IP Multimedia System) is the subsystem that 3GPP superposes on PS (Packet-Switched, packet switching) territory, and IMS possesses complete IP kernel heart net function and comprises session management carrying control etc.Its main functional entity has CSCF, HSS (Home SubscriberServer, home subscriber server), AS (Application Server, application server) etc.
CSCF mainly finishes the control to the session process.It is divided into three different logic entities: P-CSCF (Proxy-CSCF, proxy call conversation control function entity), I-CSCF (Interrogating-CSCF, query call conversation control function entity), S-CSCF again.P-CSCF is first network element that user terminal inserts the IMS network, has address translation function, can send to sip message the I-CSCF of user terminal ownership place, has played the effect of safety management and hiding access network difference.I-CSCF is the interface between a plurality of IMS network domains, is the entrance of visit territory to home domain, is responsible for the inquiry of user profile and searching of user S-CSCF.I-CSCF is used for hiding the network internal topological structure, also plays the effect of load balancing and flow control simultaneously.S-CSCF is in the core the driver's seat in IMS, be the key point of IMS multi-process control.It is responsible for record and control consumer process state, carries out the session routing function, and constantly carries out alternately with application service and billing function, carries out the value-added service route according to rule and triggers with business and control.
ICSI (IMS Communication Service Identifier, IMS communication business identification) is used to identify certain concrete IMS communication service.S-CSCF and AS can activate corresponding IMS Service Processing Unit according to ICSI, for the user provides IMS service.The input that ICSI can be used as PCRF is used for producing strategy and charging regulation information.
Method and the device the session of embodiment of the invention IP Multimedia System set up below in conjunction with accompanying drawing are described in detail.
The method flow diagram of a kind of IP Multimedia System session foundation that provides is provided for the invention process as shown in Figure 2; This method comprises:
S201: receive session and set up request;
S202: set up request according to described session, send session establishment information to the "Policy and Charging Rules Function entity;
S203: receive the strategy that the "Policy and Charging Rules Function entity is formulated;
S204: set up session connection according to described strategy.
The method flow diagram of the another kind of IP Multimedia System session foundation that provides is provided for the invention process as shown in Figure 3; This method comprises:
Application scenarios of the present invention is: the user is initiated in session and the session called subscriber sets up session connection.Detailed process is as follows:
S301: proxy call conversation control function entity receives session and initiates the session foundation request that the user sends;
S302: set up request according to described session, proxy call conversation control function entity sends session establishment information to the "Policy and Charging Rules Function entity;
S303: the "Policy and Charging Rules Function entity judges whether current core net Bearer Channel satisfies described session and set up request;
S304: set up request if current core net Bearer Channel can satisfy described session, then the strategy of "Policy and Charging Rules Function entity formulation is: the request of setting up accepts session;
S3041: when described strategy is: accept session when setting up request, the described session request of setting up is sent to the session callee;
S3042: session initiator and session callee set up session connection.
S305: set up request if current core net Bearer Channel can't satisfy described session, then the strategy of "Policy and Charging Rules Function entity formulation is: request is set up in the refusal session;
The "Policy and Charging Rules Function entity sends response message and initiates the user to session; Wherein, initiate the user when session and roam into the destination from ownership place, when this user initiated a session request, the "Policy and Charging Rules Function entity sent connection failure message and initiates the user to session; As session called subscriber during in the roaming place, the "Policy and Charging Rules Function entity sends connection failure message to the initiation session user or send and wait for that connection message is to the initiation session user;
S306: receive the strategy that the "Policy and Charging Rules Function entity is formulated; Described strategy comprises: delete current core net Bearer Channel strategy; The core net Bearer Channel strategy that request is set up in session is satisfied in foundation;
S307: set up session connection according to described strategy.
Wherein, described response message comprises: connection failure message or wait connection message.
As shown in Figure 4, the apparatus structure schematic diagram that a kind of IP Multimedia System session that provides for the invention process row is set up, this device comprises:
Receiving element: be used to receive the strategy that request and the formulation of "Policy and Charging Rules Function entity are set up in session;
Transmitting element: be used for setting up request, send session establishment information to the "Policy and Charging Rules Function entity according to described session;
Set up the session connection unit: be used for setting up session connection according to described strategy.
The apparatus structure schematic diagram of the another kind of IP Multimedia System session foundation that provides is provided for the invention process as shown in Figure 5; This device comprises:
Receiving element: be used to receive the strategy that request and the formulation of "Policy and Charging Rules Function entity are set up in session;
Transmitting element: be used for setting up request, send session establishment information to the "Policy and Charging Rules Function entity according to described session; Also be used to send response message to the session initiator.Described response message comprises: connection failure message or wait connection message.Described connection failure message comprises: 500 message, 503 message; Described wait connection message comprises: 182 message, 183 message.This unit comprises:
Regularly subdivision is set: be used to be provided with retry timer; The setting of described timer is resend the time that request is set up in session by response message announcement session initiator.
Set up the session connection unit: be used for setting up session connection according to described strategy; This unit comprises:
Strategy receives subelement: be used for receiving the strategy that connects that the "Policy and Charging Rules Function entity sends after the core net Bearer Channel does not satisfy described session foundation request; This subelement further comprises:
Deleting load-bearing subdivision: be used for the current core net Bearer Channel of "Policy and Charging Rules Function entity control deletion;
Subdivision is set up in carrying: be used for the control of "Policy and Charging Rules Function entity and set up the core net Bearer Channel that satisfies session foundation request.
The session request of setting up sends subelement: be used for the described session request of setting up is sent to the session callee; If set up request when the core net Bearer Channel satisfies described session, the session request of setting up directly sends to the callee by this unit.
As shown in Figure 6, for initiating a session request to the called subscriber that the invention process row provide, set up the signaling transfer process figure of session connection by session initiation user;
Suppose that terminal has LBO (Local BreakOut, local breakout) the default bearer (default bearing) of form, be that the session initiator gives tacit consent to and selects roaming place PDN-GW to be connected with the external packet data net, it is sip message that this default bearer is used to transmit the IMS signaling.
1, session is initiated the user and is initiated service request by Invite message, comprises the IMS type of service of request in request message, and wherein the IMS type of service can identify with ICSI.
2, after P-CSCF receives this Invite request, suspend the signaling transmission and promptly do not transmit this Invite message to S-CSCF; And the session information that comprises in this Invite request is sent to H-PCRF, this session information comprises the IMS type of service of session initiator application, i.e. ICSI.
3, H-PCRF makes a strategic decision according to the situation of described session information and current core net Bearer Channel, and whether the current core net Bearer Channel of making a strategic decision can satisfy session initiator's service request.Here Jue Ce foundation mainly is: whether the IMS business of session initiation terminal request has the CAMEL-Subscription-Information of LBO; Whether the situation of setting up of current core net Bearer Channel can satisfy QoS, security requirement of this service needed etc.
If session callee user can satisfy the request of terminal IMS business, then in response message, indicate P-CSCF to continue to finish the operation of back session connection; If can not satisfy, the unappeasable reason of initiation session initiator network this moment is informed in indication session initiator connection failure in response message; Hypothesis can not satisfy herein, and reason is that current core net Bearer Channel is a Local breakout form, the Bearer Channel of the IMS service needed home routed form of request.
4, the H-PCRF result that will make a strategic decision sends to P-CSCF.
5, after P-CSCF receives that current core net Bearer Channel does not satisfy the response message of session initiation customer service needs, initiate terminal by 500 message indication session and disconnect the current business request.The meaning of 500 message is business that current core net Bearer Channel can not satisfy request.
And, this terminal regularly informs by 500 message for being provided with retry; P-CSCF can be set at the time interval of this timing 5 seconds or 10 seconds; Also can according to the situation of reality need set.
Can also use 503 message herein.503 message and described 500 message all are that the service of indication current network has problem, and ask terminal every a period of time retry once.503 message and described 500 message all are connection failure message.
6, H-PCRF under H-PCRF control, removes the carrying of LBO form according to the result who judges in the step 3;
7, set up the carrying of Home Routed form.Request is set up in the carrying that can be the Home Routed form of initiation session initiator initiation.
8, according to the time of notifying in described 500 message, terminal UE-A initiates the Invite request again, and P-CSCF carries out corresponding judgment according to step 2～4 after receiving this request, if current core net Bearer Channel can satisfy session initiator's service request.
9, P-CSCF sends to S-CSCF with service request;
10, S-CSCF sends to the session callee with service request;
11～13, the session callee returns 200 OK acknowledge messages to end subscriber;
After the step 13, session initiation user UE-A sets up corresponding medium with session callee opposite end and is connected.
Present embodiment has only illustrated the transfer process from local breakout to home routed form, and conversion and this embodiment from home routed to local breakout are similar, also is to remove existing carrying, sets up the process of new bearer.
As shown in Figure 7, a kind ofly set up the signaling transfer process figure of session during for roaming state as the callee for what the invention process row provided;
Suppose that session callee user has the default bearing of LBO form, promptly the session callee gives tacit consent to and selects roaming place PDN-GW to be connected with the external packet data net, and it is sip message that this default bearer is used to transmit the IMS signaling.
1, session is initiated the user and is initiated service request by Invite message, comprises the IMS type of service of request in request message, and wherein the IMS type of service can identify with ICSI;
2, S-CSCF sends to P-CSCF with this message;
3, after P-CSCF receives this Invite request, suspend the signaling transmission; P-CSCF sends to H-PCRF with the session information that comprises in this Invite request, and this conversation message comprises the IMS type of service of session initiator terminal to apply, i.e. ICSI;
4, H-PCRF makes a strategic decision according to the situation of described session information and current core net Bearer Channel, and whether the current core net Bearer Channel of making a strategic decision can satisfy session initiator service request.Here Jue Ce foundation mainly is: whether the IMS business of session initiator request has the CAMEL-Subscription-Information of local breakout; Whether the situation of setting up of current core net Bearer Channel can satisfy QoS, security requirement of this service needed etc.
If the callee can satisfy the IMS business of initiation session side's request, then in response message, indicate and can satisfy, P-CSCF receives the operation that can continue to finish the back session connection behind this response message; If can not satisfy, indication session initiator connection failure is informed the unappeasable reason of session initiator network this moment by response message in response message; Hypothesis can not satisfy herein, and reason is that current core net Bearer Channel is a Local breakout form, the Bearer Channel of the IMS service needed home routed form of request.
5, the H-PCRF result that will make a strategic decision sends to P-CSCF.
6, after P-CSCF received that current core net Bearer Channel does not satisfy the response message of session initiator service needed, the initiator disconnected the current business request by 500 message indication session.The meaning of 500 message is business that current core net Bearer Channel can not satisfy request.
And, this terminal regularly informs by 500 message for being provided with retry; P-CSCF can be set at the time interval of this timing 5 seconds or 10 seconds; Also can according to the situation of reality need set.
Can also use 503 message herein.503 message and described 500 message all are that the service of indication current network has problem, and please initiate terminal every a period of time retry once.503 message and described 500 message all are connection failure message.
7, S-CSCF sends to session initiator user with this 500 message;
8, H-PCRF under H-PCRF control, removes the carrying of LBO form according to the result who judges in the step 4;
9, set up the carrying of Home Routed form.
10, according to the time of notifying in described 500 message, session initiator user initiates the Invite request again, and this message at first sends to session initiator's S-CSCF;
11, S-CSCF sends to P-CSCF with this message;
12, after P-CSCF received this request, H-PCRF judged that according to the situation of described session information and current core net Bearer Channel the result of judgement can satisfy the type of the IMS business of user applies for current core net Bearer Channel.The Invite message that step 10 is initiated continues to send to the session callee;
13～15, session initiator UE-A returns 200 OK acknowledge messages;
After the step 15, session initiator UE-A sets up corresponding medium with session callee user and is connected,
Present embodiment has only illustrated the transfer process from local breakout to home routed form, and conversion and this embodiment from home routed to local breakout are similar, also is to remove existing carrying, sets up the process of new bearer.
As shown in Figure 8, the another kind that provides for the invention process row is set up the signaling transfer process figure of session during for roaming state as the callee;
Suppose the default bearing that session initiation user has the LBO form, i.e. session initiation user gives tacit consent to selection roaming place PDN-GW and is connected with the external packet data net, and it is sip message that this default bearer is used to transmit the IMS signaling.
1, session is initiated the user and is initiated service request by Invite message, comprises the IMS type of service of request in request message, and wherein the IMS type of service can identify with ICSI;
2, S-CSCF sends to P-CSCF with this message;
3, after P-CSCF receives this Invite request, suspend the signaling transmission; P-CSCF sends to this session information of H-PCRF with the session information that comprises in this Invite request and comprises the IMS type of service that user applies is initiated in session, i.e. ICSI;
4, H-PCRF makes a strategic decision according to the situation of described session information and current core net Bearer Channel, and whether the current core net Bearer Channel of making a strategic decision can satisfy session is initiated the customer service request.Here Jue Ce foundation mainly is: whether the IMS business of session initiation user request has the CAMEL-Subscription-Information of local breakout; Whether the situation of setting up of current core net Bearer Channel can satisfy QoS, security requirement of this service needed etc.
If the session called subscriber can satisfy the IMS business of initiation session user request, then in response message, indicate and can satisfy, P-CSCF receives the operation of the session connection that can continue to finish the back behind this response message; If can not satisfy, user's connection failure is initiated in the indication session in response message, informs the unappeasable reason of session initiation user's network this moment by response message; Hypothesis can not satisfy herein, and reason is that current core net Bearer Channel is a Local breakout form, the Bearer Channel of the IMS service needed home routed form of request.
5, the H-PCRF result that will make a strategic decision sends to P-CSCF.
6, after P-CSCF received that current core net Bearer Channel satisfy not to be initiated the response message of customer service needs, initiating the user to session, to send 182 message indication session initiator etc. to be connected.The meaning of 182 message is that current sessions initiation user temporarily can not connect the webserver, but the webserver is not refused this request, when session is initiated can continue connection session initiator UE-A when the user can connect.
Can also use 183 message herein, the meaning of 183 message is current calling well afoots, and the state information of carrying current sessions in this message body.Wherein, described 182 message and 183 message all are Temporary Response message.
7, S-CSCF sends to session with this 182 message and initiates the user;
8, H-PCRF under H-PCRF control, removes the carrying of LBO form according to the result who judges in the step 4;
9, set up the carrying of Home Routed form;
10, after the carrying of home routed form is set up successfully, P-CSCF continues to send to session callee family with Invite message;
11～13, the session called subscriber returns 200 OK acknowledge messages;
After the step 13, the session initiator sets up corresponding medium with session callee user and is connected.
Present embodiment has only illustrated the transfer process from local breakout to home routed form, and conversion and this embodiment from home routed to local breakout are similar, also is to remove existing carrying, sets up the process of new bearer.
The embodiment of the invention at first sends to the "Policy and Charging Rules Function entity by proxy call conversation control function entity with session establishment information, the "Policy and Charging Rules Function entity judges that whether current core net Bearer Channel can satisfy session initiator's session foundation request, carries out the negotiation of the Signaling Layer of session connection then; Compared with prior art, the embodiment of the invention can't satisfy under the situation of service request from user at current core net Bearer Channel, can carry out the negotiations process of Signaling Layer, has so just significantly reduced the waste of Signaling Layer resource, has improved user's experience.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention is as the criterion with the protection range of claim.
Claims (20)
1, a kind of method of IP Multimedia System session foundation is characterized in that, comprising:
Receive session and set up request;
Set up request according to described session, send session establishment information to the "Policy and Charging Rules Function entity;
Receive the strategy that the "Policy and Charging Rules Function entity is formulated;
Set up session connection according to described strategy.
2, the method for IP Multimedia System session foundation according to claim 1 is characterized in that,
Set up request if current core net Bearer Channel can satisfy described session, then the strategy of "Policy and Charging Rules Function entity formulation is: the request of setting up accepts session;
Set up request if current core net Bearer Channel can't satisfy described session, then the strategy of "Policy and Charging Rules Function entity formulation is: request is set up in the refusal session.
3, the method for IP Multimedia System session foundation according to claim 2 is characterized in that, when described strategy is: accept session when setting up request; The step of setting up session connection according to described strategy comprises: the described session request of setting up is sent to the session callee.
4, the method for IP Multimedia System session foundation according to claim 2 is characterized in that, when described strategy is: when request is set up in the refusal session; The step of setting up session connection according to described strategy comprises:
Send response message to the session initiator.
5, the method for IP Multimedia System session foundation according to claim 4 is characterized in that,
Described transmission response message comprises to session initiator's step: send connection failure message to the session initiator.
6, the method for IP Multimedia System session foundation according to claim 4 is characterized in that the callee is in roaming state when session; Described transmission response message comprises to session initiator's step: send and wait for that connection message is to the session initiator.
7, according to the method for claim 5 or 6 described IP Multimedia System sessions foundation, it is characterized in that described connection failure message comprises: 500 message or 503 message; Described wait connection message comprises: 182 message or 183 message.
8, the method for IP Multimedia System session foundation according to claim 5 is characterized in that, when sending connection failure message to the session initiator; Set up the step of session connection according to described strategy, comprising:
Announcement session initiator resends the time that request is set up in session.
9, the method for IP Multimedia System session foundation according to claim 6 is characterized in that, when sending the wait connection message to the session initiator; The step of setting up session connection according to described strategy comprises:
After the core net Bearer Channel satisfies described session foundation request,
The described session request of setting up is sent to the session callee.
10, the method for IP Multimedia System session foundation according to claim 4 is characterized in that, the strategy that request is set up in the refusal session that described "Policy and Charging Rules Function entity sends also comprises afterwards:
The current core net Bearer Channel of "Policy and Charging Rules Function entity control deletion;
The control of "Policy and Charging Rules Function entity is set up and is satisfied the core net Bearer Channel that request is set up in session.
11, a kind of device of IP Multimedia System session foundation is characterized in that, comprising:
Receiving element: be used to receive the strategy that request and the formulation of "Policy and Charging Rules Function entity are set up in session;
Transmitting element: be used for setting up request, send session establishment information to the "Policy and Charging Rules Function entity according to described session;
Set up the session connection unit: be used for setting up session connection according to described strategy.
12, the device of IP Multimedia System session foundation according to claim 11 is characterized in that,
Set up request if current core net Bearer Channel can satisfy described session, then the strategy of "Policy and Charging Rules Function entity formulation is: the request of setting up accepts session;
Set up request if current core net Bearer Channel can't satisfy described session, then the strategy of "Policy and Charging Rules Function entity formulation is: request is set up in the refusal session.
13, the device of IP Multimedia System session foundation according to claim 12 is characterized in that, when described strategy is: accept session when setting up request; The described session connection unit of setting up is used for the described session request of setting up is sent to the session callee.
14, the device of IP Multimedia System session foundation according to claim 12 is characterized in that, when described strategy is: when request is set up in the refusal session; Described transmitting element is used to send response message to the session initiator.
15, the device of IP Multimedia System session foundation according to claim 14 is characterized in that described transmitting element is used to send connection failure message to the session initiator.
16, the device of IP Multimedia System session foundation according to claim 14 is characterized in that the callee is in roaming state when session; Described transmitting element is used for sending and waits for that connection message is to the session initiator.
17, according to the device of claim 15 or 16 described IP Multimedia System sessions foundation, it is characterized in that described connection failure message comprises: 500 message or 503 message; Described wait connection message comprises: 182 message or 183 message.
18, the device of IP Multimedia System session foundation according to claim 14 is characterized in that, when sending connection failure message to the session initiator; Described transmitting element comprises:
Regularly subdivision is set: be used to be provided with retry timer; Announcement session initiator resends the time that request is set up in session.
19, the device of IP Multimedia System session foundation according to claim 14 is characterized in that, when sending the wait connection message to the session initiator; The described session connection unit of setting up also comprises:
Strategy receives subelement: be used for receiving the strategy that connects that the "Policy and Charging Rules Function entity sends after the core net Bearer Channel does not satisfy described session foundation request;
The session request of setting up sends subelement: be used for the described session request of setting up is sent to the session callee.
20, the device of IP Multimedia System session foundation according to claim 19 is characterized in that, described strategy receives subelement, also comprises:
Deleting load-bearing subdivision: be used for the current core net Bearer Channel of "Policy and Charging Rules Function entity control deletion;
Subdivision is set up in carrying: be used for the control of "Policy and Charging Rules Function entity and set up the core net Bearer Channel that satisfies session foundation request.
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| CN2008100882815A CN101572950B (en) | 2008-04-30 | 2008-04-30 | Session establishment method and device for IP multimedia subsystem |
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| CN2008100882815A CN101572950B (en) | 2008-04-30 | 2008-04-30 | Session establishment method and device for IP multimedia subsystem |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101355811B (en) * | 2008-09-08 | 2012-04-25 | 华为终端有限公司 | Method, system and equipment for rebuilding bearing channel |
| CN103428028A (en) * | 2013-07-31 | 2013-12-04 | 深圳市邦彦信息技术有限公司 | Service quality maintenance method and system for heterogeneous network |
| CN103974227A (en) * | 2013-01-31 | 2014-08-06 | 中国电信股份有限公司 | Method, device and system for inquiring QoS (quality of service) contracting information |
| CN113596888A (en) * | 2021-07-13 | 2021-11-02 | Oppo广东移动通信有限公司 | Information processing method, device, equipment and storage medium |
| WO2024012238A1 (en) * | 2022-07-14 | 2024-01-18 | 维沃移动通信有限公司 | Communication processing method and apparatus, and communication device and readable storage medium |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047988B (en) * | 2006-05-30 | 2010-12-01 | 华为技术有限公司 | Strategy and charging control method at user roaming state |
-
2008
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101355811B (en) * | 2008-09-08 | 2012-04-25 | 华为终端有限公司 | Method, system and equipment for rebuilding bearing channel |
| CN103974227A (en) * | 2013-01-31 | 2014-08-06 | 中国电信股份有限公司 | Method, device and system for inquiring QoS (quality of service) contracting information |
| CN103428028A (en) * | 2013-07-31 | 2013-12-04 | 深圳市邦彦信息技术有限公司 | Service quality maintenance method and system for heterogeneous network |
| CN103428028B (en) * | 2013-07-31 | 2016-10-26 | 邦彦技术股份有限公司 | Service quality maintenance method and system for heterogeneous network |
| CN113596888A (en) * | 2021-07-13 | 2021-11-02 | Oppo广东移动通信有限公司 | Information processing method, device, equipment and storage medium |
| CN113596888B (en) * | 2021-07-13 | 2024-09-24 | Oppo广东移动通信有限公司 | Information processing method, device, equipment and storage medium |
| WO2024012238A1 (en) * | 2022-07-14 | 2024-01-18 | 维沃移动通信有限公司 | Communication processing method and apparatus, and communication device and readable storage medium |
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| CN101572950B (en) | 2012-07-04 |
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