CN102264054A - Resource management method and system - Google Patents
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Abstract
The invention relates to a resource management method and a resource management system. The resource management method comprises the following steps that: a policy and charging rule function (PCRF) acquires information of a mobile management entity (MME) associated with a session of an internet protocol (IP) connecting access network (IP-CAN); the PCRF creates a session with the MME according to the acquired MME information; and the PCRF acquires network load information from the MME through the created session and carries out resource management according to the network load information. By the resource management method and the resource management system, the policy control and the service authorization which correspond to the network load can be realized.
Description
Technical field
The present invention relates to moving communicating field, be specifically related to a kind of method for managing resource and system.
Background technology
Third generation partner program (3rd Generation Partnership Project, abbreviate 3GPP as) grouping system (the Evolved Packet System of evolution, abbreviate EPS as) by universal mobile telecommunications system land radio access web (the Evolved Universal Terrestrial Radio AccessNetwork of evolution, abbreviate E-UTRAN as), mobile management unit (Mobility ManagementEntity, abbreviate MME as), gateway (Serving Gateway, S-GW), grouped data network gateway (Packet Data Network Gateway, abbreviate P-GW or PDN GW as), home subscriber server (Home Subscriber Server, abbreviate HSS as), authentication and authorization charging (the Authentication of 3GPP, Authorization and Accounting, abbreviate AAA as) server, "Policy and Charging Rules Function (Policy and Charging Rules Function abbreviates PCRF as) entity and other support nodes are formed.
Fig. 1 is the schematic diagram according to the system architecture of the EPS of correlation technique, and as shown in Figure 1, Mobility Management Entity is responsible for the related work of chains of command such as the processing of mobile management, Non-Access Stratum signaling and the contextual management of user's mobile management; S-GW is the accessing gateway equipment that links to each other with E-UTRAN, transmits data between E-UTRAN and P-GW, and is responsible for pending datas such as paging are carried out buffer memory; P-GW (packet data gateway) then is the borde gateway of EPS and packet data network (Packet Data Network abbreviates PDN as) network, and the access of being responsible for PDN reaches functions such as transmitting data between EPS and PDN; S-GW and P-GW belong to the core net gateway; PCRF is the "Policy and Charging Rules Function entity, it is by receiving interface Rx and carrier network agreement (Internet Protocol, abbreviating IP as) business network links to each other, obtain business information, in addition, it links to each other with gateway device in the network by the Gx/Gxa/Gxc interface, be responsible for initiating the foundation of IP carrying, guarantee the service quality (Quality of Service abbreviates QoS as) of business datum, and the control of chargeing.
EPS supports the intercommunication with non-3 GPP system, wherein, passes through the S2a/b/c interface with the intercommunication of non-3 GPP system and realizes that P-GW is as the anchor point between 3GPP and non-3 GPP system.In the system architecture diagram of EPS, non-3 GPP system is divided into the non-3GPP IP access of trusted and trustless non-3GPP IP inserts.The non-3GPP IP of trusted inserts and can directly be connected with P-GW by the S2a interface; Trustless non-3GPPIP inserts packet data gateway (the Evolved Packet Data Gateway that needs through evolution, abbreviate ePDG as) link to each other with P-GW, interface between ePDG and P-GW is S2b, S2c provides subscriber equipment (User Equipment, abbreviate UE as) with relevant control and the mobility support of user's face between the P-GW, the mobility management protocol of its support is for supporting the mobile IP v 6 (Moblie IPv6Support for Dual Stack Hosts and Routers abbreviates DSMIPv6 as) of two stacks.
Among the EPS system, strategy and charge execution function (Policy and Charging EnforcementFunction abbreviates PCEF as) entity are present among the P-GW Gx interface (see figure 1) exchange message between PCRF and the P-GW.When the interface between P-GW and S-GW during based on PMIPv6, S-GW also has bearing binding and event reporting function (Bearer Binding and Event Report Function, abbreviate BBERF as) entity carries out QoS control to business data flow, between S-GW and the PCRF by Gxc interface (see figure 1) exchange message.When inserting by the non-3GPP connecting system of trusted, the also resident BBERF in the trusted non-3 GPP access network Central Shanxi Plain.Pass through Gxa interface (see figure 1) exchange message between trusted non-3 GPP access network pass and the PCRF.When UE roams, the S9 interface is as the interface of ownership place PCRF and visit ground PCRF, provide professional application function (ApplicationFunction for UE simultaneously, abbreviate AF as), send to PCRF by Rx interface and to be used to generate strategy and business information that the control of chargeing (Policy andCharging Control abbreviates PCC as) is tactful.In 3GPP, can find corresponding PDN network by APN (Access Point Name abbreviates APN as).Usually UE is called the session of an IP connection Access Network (IP Connectivity AccessNetwork abbreviates IP-CAN as) to a connection of PDN network.In the process of setting up the IP-CAN session, BBERF and PCEF respectively and set up the Diameter session between the PCRF transmit policy, billing information that this IP-CAN session is controlled and the information that is used to generate strategy etc. by these Diameter sessions.
Under the current operation mode, some business are arranged, operator need adopt push mode to carry out (so-called push mode, the triggering that is meant this business is the service server from operator, such professional execution can be held consultation with user UE) time, for example: operator sends advertisement to the user, business such as notice; This class business is non real-time class business (so-called non real-time class business is meant that this business can carry out at current time, also can be postponed) normally, for example: consider current network actual loading situation, if loading condition is heavier, can not carry out such business, postpone the execution of this business.The benefit of doing like this is: can effectively avoid offered load to continue to increase the weight of when offered load is heavier, when offered load is light, carries out such business again, thereby play the effect of load balancing.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method for managing resource and system, with policy control and the service authorization of realizing adapting with offered load.
For solving above technical problem, the invention provides a kind of method for managing resource, this method comprises:
"Policy and Charging Rules Function (PCRF) knows that IP connects mobile management unit (MME) information of Access Network (IP-CAN) session association;
Described PCRF sets up session according to MME information and the described MME known;
Described PCRF is known network load information by the session of setting up from described MME, and carries out resource management according to described network load information.
Further, described PCRF knows that the step of the MME information of IP-CAN session association specifically comprises: IAD (S-GW) sends message, the MME information of wherein carrying the IP-CAN session association to packet data gateway (P-GW); Described P-GW sends message, the MME information of wherein carrying described IP-CAN session association to described PCRF.
Further, described PCRF knows that the step of the MME information of IP-CAN session association specifically comprises:
IAD (S-GW) or home subscriber server (HSS) initiatively send the message of the MME information of carrying described IP-CAN session association to described PCRF;
Or described PCRF sends the query requests of the IP-CAN session label information of carrying the MME associating information that will inquire about to S-GW or HSS; Described S-GW or HSS return the MME information of described IP-CAN session association according to described query requests.
Further, described PCRF knows that from described MME network load information specifically comprises: described PCRF sends the offered load query requests to described MME; Described MME is according to described offered load query requests requester network load information, and returns the Query Result that comprises corresponding network load information to described PCRF.
Further, described PCRF knows that from described MME network load information specifically comprises: described PCRF issues the offered load subscribe request to described MME; Described MME reports the subscribing notification that comprises corresponding network load information according to described offered load subscribe request periodicity or incident.
Further, the MME information of described IP-CAN session association comprises IP-CAN session label information and MME identification information, before described PCRF was known network load information from described MME, this method also comprises: described PCRF set up the corresponding relation of MME information and described IP-CAN session label information; Described PCRF carries IP-CAN session label information described MME correspondence, that will inquire about according to the described corresponding relation of setting up in query requests that sends or subscribe request; Described MME is according to the corresponding offered load of described IP-CAN session label information inquiry; Described IP-CAN session label information refers to the identification information and/or APN (APN) information of terminal.
Further, when described PCRF learns the new MME information of described IP-CAN session association, set up session with described new MME, and the session of end and former MME.
For solving above technical problem, the present invention also provides a kind of resource management system, and this system comprises: "Policy and Charging Rules Function (PCRF) entity and mobile management unit (MME), wherein,
Described "Policy and Charging Rules Function (PCRF) entity comprises that MME information knows module, session management module and resource management module, wherein,
Described MME information is known module, is used to know mobile management unit (MME) information of IP-CAN session association;
Described session management module is used for knowing that according to described MME information MME information and described MME that module is known set up session;
Described resource management module is used for knowing network load information by the session that described session management module is set up from described MME, and carries out resource management according to described network load information;
Described MME comprises session processing module and offered load enquiry module, wherein:
Described session processing module is used for setting up session with described PCRF;
Described network load information maintenance module is used for the maintaining network load information, and the session of setting up by described session processing module reports described network load information to described PCRF.
Further, described system also comprises IAD (S-GW) and packet data gateway (P-GW), and described S-GW is used for sending message, the MME information of wherein carrying the IP-CAN session association to described P-GW; Described P-GW is used to receive the message that described S-GW sends, and sends message, the MME information of wherein carrying described IP-CAN session association to described PCRF; The MME information of described PCRF knows that module receives the message of described P-GW transmission to know described MME information.
Further, described system also comprises IAD (S-GW) or home subscriber server (HSS), described access network element or HSS are used for initiatively sending message to described PCRF, wherein carry the MME information of described IP-CAN session association, the MME information of described PCRF knows that module receives the message of described S-GW transmission to know described MME information.
Further, described system also comprises IAD (S-GW) or home subscriber server (HSS), described access network element or HSS are used to receive the query requests of described PCRF, and send message to described PCRF according to described query requests, wherein carry the MME information of described IP-CAN session association, the MME information of described PCRF is known module, be used for sending the query requests of the IP-CAN session label information of carrying the MME associating information that to inquire about, and receive message that described S-GW sends to know described MME information to described S-GW or HSS.
Further, the resource management module of described PCRF knows that from described MME network load information specifically comprises: send the offered load query requests to described MME, and receive the Query Result that described MME sends; The network load information maintenance module of described MME according to described offered load query requests requester network load information, and returns the Query Result that comprises corresponding network load information to described PCRF.
Further, the resource management module of described PCRF knows that from described MME network load information specifically comprises: issue the offered load subscribe request to described MME, and receive the subscribing notification that comprises Query Result that described MME reports; The network load information maintenance module of described MME is according to described offered load subscribe request, and periodicity or incident report the subscribing notification that comprises corresponding network load information.
Further, the MME information of described IP-CAN session association comprises IP-CAN session label information and MME identification information, and the MME information of described PCRF knows that module also is used to set up the corresponding relation of MME information and described IP-CAN session label information; Described resource management module knows that according to described MME the corresponding relation that module is set up carries IP-CAN session label information described MME correspondence, that will inquire about in the query requests or the subscribe request that send; The offered load enquiry module of described MME is according to the corresponding offered load of described IP-CAN session label information inquiry; Described IP-CAN session label information refers to the identification information and/or APN (APN) information of terminal.
Further, when the MME of described PCRF information knows that module learns the new MME information of described IP-CAN session association, upgrade the MME information corresponding with described IP-CAN session label information; Described session management module and described new MME also are used to finish the session with former MME when setting up session, during corresponding IP-CAN conversation end, also be used to finish the session with related MME; The session processing module of former MME also is used to finish the session with described PCRF.
In method for managing resource of the present invention and the system, "Policy and Charging Rules Function (PCRF) is known mobile management unit (MME) information of IP-CAN session association, and sets up session with it; When PCRF need be known network load condition, know network load information from MME, and carry out resource management, thereby can realize the service authorization and the policy control that adapt with offered load according to described network load information.
Description of drawings
Description of drawings is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the system architecture of EPS;
Fig. 2 is the Organization Chart that the PCRF expansion is generated strategy based on network load condition;
Fig. 3 is the schematic diagram of method for managing resource of the present invention;
Fig. 4 is user when adhering to, and P-GW (PCEF) informs the schematic flow sheet of information of the MME of PCRF user conversation association;
Fig. 5 is that PCRF is to MME requester network loading condition schematic flow sheet;
Fig. 6 is PCRF issues a schematic flow sheet from the offered load subscribing notification to MME;
Fig. 7 is that PCRF rebuilds the schematic flow sheet of session with new MME under the handoff scenario;
Fig. 8 is the modular structure schematic diagram of resource management system of the present invention;
Fig. 9 and Figure 10 are two modular structure schematic diagrames in addition of resource management system of the present invention;
Figure 11 is user when adhering to, and HSS informs the schematic flow sheet of information of the MME of PCRF user conversation association;
Figure 12 is user when adhering to, and S-GW (having BBERF) informs the schematic flow sheet of information of the MME of PCRF user conversation association.
Embodiment
The main thought "Policy and Charging Rules Function (PCRF) of method for managing resource of the present invention and system is known mobile management unit (MME) information of IP-CAN session association, and sets up session with it; When PCRF need be known network load condition, know network load information from MME, and carry out resource management according to described network load information, realize the service authorization and the policy control that adapt with offered load.
As shown in Figure 3, method for managing resource of the present invention comprises:
Step 301: "Policy and Charging Rules Function (PCRF) is known mobile management unit (MME) information of IP-CAN session association;
PCRF can be known the MME information of IP-CAN session association by following dual mode:
Mode one: IAD (S-GW) sends message, the MME information of wherein carrying the IP-CAN session association to packet data gateway (P-GW); Described P-GW sends message, the MME information of wherein carrying described IP-CAN session association to described PCRF.
Mode two: PCRF obtains the MME information of IP-CAN session association from S-GW:
IAD (S-GW) initiatively sends message, the MME information of wherein carrying described IP-CAN session association to described PCRF; Or PCRF sends the query requests of the IP-CAN session label information of carrying the MME associating information that will inquire about to S-GW; Described S-GW returns the MME information of described IP-CAN session association according to described query requests.
Mode three: PCRF obtains the MME information of IP-CAN session association from HSS:
Home subscriber server (HSS) initiatively sends the message of the MME information of carrying described IP-CAN session association to described PCRF; Or described PCRF sends the query requests of the IP-CAN session label information of carrying the MME associating information that will inquire about to HSS; Described HSS returns the MME information of described IP-CAN session association according to described query requests.
Step 302: described PCRF sets up session according to MME information and the described MME known;
Step 303: described PCRF is known network load information by the session of setting up from described MME, and carries out resource management according to described network load information.
Described PCRF knows that from described MME the mode of network load information has following two kinds:
The PCRF inquiry: PCRF sends the offered load query requests to MME; Described MME is according to described offered load query requests requester network load information, and returns the Query Result that comprises corresponding network load information to described PCRF.
PCRF subscribes to: PCRF issues the offered load subscribe request to MME; Described MME is according to described offered load subscribe request, and periodicity or incident report the subscribing notification that comprises corresponding network load information.
Particularly, the MME information of described IP-CAN session association comprises IP-CAN session label information and MME identification information (as MME ID); Before described PCRF was known network load information from described MME, this method also comprises: described PCRF set up the corresponding relation of MME information and described IP-CAN session label information; Described PCRF carries IP-CAN session label information described MME correspondence, that will inquire about according to the described corresponding relation of setting up in query requests that sends or subscribe request; Described MME is according to the corresponding offered load of described IP-CAN session label information inquiry; Described IP-CAN session label information refers to the identification information (as the IP address of Termination ID or terminal) and/or APN (APN) information of terminal.
When the IP-CAN session switches, when PCRF learns the new MME information of described IP-CAN session association, set up session with described new MME, and the session of end and former MME.
Below in conjunction with the drawings and specific embodiments technical scheme of the present invention is described in further detail, can be implemented so that those skilled in the art can better understand the present invention also, but illustrated embodiment is not as a limitation of the invention.
When UE adheres to, the information that S-GW (having BBERF) informs MME to P-GW (having PCEF) (for example: MME ID), P-GW is when setting up the IP-CAN conversation request to PCRF, and (for example: MME ID), PCRF can select to set up session to this MME with the information that goes up MME.As shown in Figure 4, PCRF knows that the process of MME information comprises:
Step 401:UE is attached on the network;
The information (MMEID) that step 402:S-GW (BBERF) informs MME to P-GW (PCEF), thus P-GW can be known the MME information that the IP-CAN session of this UE is associated;
Step 403:P-GW (PCEF) and PCRF set up the IP-CAN session, send to the information (for example: MME ID and/or MME IP address) that has MME in the message of PCRF;
After step 404:PCRF receives message, preserve the corresponding relation of the UE MME related with this UE, or the corresponding relation of the associated MME of the IP-CAN session of UE and this IP-CAN session;
Adopt the identification information of UE and certain IP-CAN session that APN information is represented UE together.
Step 405:PCRF and MME set up session.
Step 405 is selected to set up session to MME after knowing MME information among Fig. 4, can certainly set up session to MME again when PCRF need be known network load information.
After the user finishes IP-CAN session foundation, when PCRF is subjected to inside (for example: operator disposes) or external trigger (for example: receive the business information from AF); When needing the loading condition of inquiry current network, if this moment, PCRF set up session with MME, PCRF sends query requests to MME, can comprise information such as UE ID and/or APN in the request message, MME returns response to PCRF, comprises the result of inquiry in the response message.As shown in Figure 5, PCRF comprises by the process that inquiry mode obtains network load information:
Step 501:IP-CAN session has been set up and has been finished, and PCRF is subjected to inside (for example: operator disposes) or external trigger (for example: receive the business information from AF); The loading condition that needs the inquiry current network;
Step 502a: if this moment, PCRF set up session with MME, PCRF sends query requests to MME, can comprise IP-CAN session label information such as UE ID and/or APN in the request message;
Step 501b: if this moment, PCRF did not set up session with MME as yet, PCRF sets up session requester network loading condition to MME, has IP-CAN session label information such as UE ID and/or APN in the message;
Among the step 501b, session foundation and offered load inquiry realize same message, can certainly inquire about to MME more whenever necessary after setting up session.
After step 503:MME receives request message, inquiry current network loading condition;
For example, MME can be initiatively to the NodeB inquiry, and perhaps, MME also can initiatively be reported the present load situation that gets access to network by subscribing to NodeB by NodeB.
Need to prove, in actual applications, MME is after receiving query requests, can inquire about the local present load situation of whether safeguarding this UE place network earlier, if then MME can directly obtain the present load situation of this network of preservation, otherwise, the present load situation that MME inquires about this network by the base station returns to PCRF with the result who inquires.
Wherein, the present load situation of the local network of preserving of MME can be that the base station MME that initiatively gives the correct time on MME preserves, and also can be that MME preserves when the base station inquiry is obtained before this.
Step 504:MME returns response to PCRF, comprises Query Result in the response message;
After step 505:PCRF receives Query Result, carry out resource management, carry out corresponding strategy or the corresponding business mandate.
When PCRF and MME have set up session, and need MME initiatively during report network loading condition notice (for example: the signatory or operator's configuration of user), can issue subscribe request to MME; When this subscription condition was triggered, MME reported subscribing notification to PCRF.When PCRF did not need MME to report subscribing notification, PCRF sent to MME and subscribes to cancellation.As shown in Figure 6, this network load information reports process to comprise:
Step 601:PCRF issues the offered load subscribe request to MME, comprising the IP-CAN session label information, requires MME to report subscribing notification to PCRF;
For example, the subscription condition can ask MME to report with some cycles, perhaps, reports in the time of also can working as certain network event of generation.
Step 602: when the subscription condition was triggered, MME was to PCRF report network load subscribing notification, comprising network load information;
Step 603: when PCRF did not need MME active report network loading condition notice, PCRF sent offered load to MME and subscribes to cancellation.
In conversation procedure, during the scene that switches (situation of relocation takes place MME), PCRF sets up session to Target MME (new MME), and PCRF deletes to Source MME (old MME) announcement session, as shown in Figure 7, the reconstruction of session and delete procedure comprise:
Step 701: for handoff scenario, P-GW (PCEF) reports PCRF with new MME ID;
After step 702:PCRF receives message, preserve the information of new MME, carry out session association;
Step 703:PCRF sends message to Target MME, sets up session;
Step 704:PCRF finishes to Source MME announcement session;
For non-handoff scenario,, during the IP-CAN conversation end, notify the MME session to stop when PCRF perceives the UE deviated from network.
This inventive method is to 3GPP2, and normal structures such as Wimax also are suitable for.
When UE adheres to, PCRF perceives UE and adheres to and set up the IP-CAN session, PCRF sends message to HSS, the IP-CAN session information that carries UE in the message (for example: UE ID, UE IP, information such as APN), after HSS receives message, return the MME information of the IP-CAN session association of this UE or this UE to PCRF, PCRF can select to set up session to this MME.As shown in figure 11, PCRF knows that the process of MME information comprises:
Step 1101:UE is attached on the network;
Step 1102:PCRF perceives UE and adheres to and set up the IP-CAN session;
Step 1103:PCRF sends the query requests of the associated MME information of this UE of inquiry or this IP-CAN session to HSS;
Step 1104:HSS returns response message, has the associated MME information of this UE or this IP-CAN session in the message;
Step 1105:PCRF can set up session to MME, the requester network loading condition.
Step 1105 is selected to set up session to MME after knowing MME information among Figure 11, can certainly set up session to MME again when PCRF need be known network load information.
When UE adhered to, S-GW (having BBERF) was when PCRF sets up gateway control session, and (for example: MME ID), PCRF can select to set up session to this MME with the information that goes up MME.As shown in figure 12, PCRF knows that the process of MME information comprises:
Step 1201:UE is attached on the network;
Step 1202:S-GW (BBERF) and PCRF set up gateway control session, send to the information (for example: MME ID and/or MME IP address) that has MME in the message of PCRF;
After step 1203:PCRF receives message, preserve the corresponding relation of the UE MME related with this UE, or the corresponding relation of the associated MME of the IP-CAN session of UE and this IP-CAN session;
Adopt the identification information of UE and certain IP-CAN session that APN information is represented UE together.
Step 1204:PCRF and MME set up session.
Step 1204 is selected to set up session to MME after knowing MME information among Figure 12, can certainly set up session to MME again when PCRF need be known network load information.
In order to realize above method, the present invention also provides a kind of resource management system, and as shown in Figure 8, this system comprises: "Policy and Charging Rules Function (PCRF) entity and mobile management unit (MME), wherein,
Described "Policy and Charging Rules Function (PCRF) entity comprises that MME information knows module, session management module and resource management module, wherein,
Described MME information is known module, is used to know mobile management unit (MME) information of IP-CAN session association;
Described session management module is used for knowing that according to described MME information MME information and described MME that module is known set up session;
Described resource management module is used for knowing network load information by the session that described session management module is set up from described MME, and carries out resource management according to described network load information;
Described MME comprises session processing module and offered load enquiry module, wherein:
Described session processing module is used for setting up session with described PCRF;
Described network load information maintenance module is used for the maintaining network load information, and the session of setting up by described session processing module reports described network load information to described PCRF.
Alternatively, as shown in Figure 9, described system also comprises IAD (S-GW) and packet data gateway (P-GW), and described S-GW is used for sending message, the MME information of wherein carrying the IP-CAN session association to described P-GW; Described P-GW is used to receive the message that described S-GW sends, and sends message, the MME information of wherein carrying described IP-CAN session association to described PCRF; The MME information of described PCRF knows that module receives the message of described P-GW transmission to know described MME information.
Alternatively, as shown in figure 10, described system also comprises IAD (S-GW) or home subscriber server (HSS), described access network element or HSS are used for initiatively sending message to described PCRF, wherein carry the MME information of described IP-CAN session association, the MME information of described PCRF knows that module receives the message of described S-GW transmission to know described MME information.
Alternatively, described system also comprises IAD (S-GW) or home subscriber server (HSS), described access network element or HSS are used to receive the query requests of described PCRF, and send message to described PCRF according to described query requests, wherein carry the MME information of described IP-CAN session association, the MME information of described PCRF is known module, be used for sending the query requests of the IP-CAN session label information of carrying the MME associating information that to inquire about, and receive message that described S-GW sends to know described MME information to described S-GW or HSS.
Particularly, the resource management module of described PCRF knows that from described MME network load information specifically comprises: send the offered load query requests to described MME, and receive the Query Result that described MME sends; The network load information maintenance module of described MME according to described offered load query requests requester network load information, and returns the Query Result that comprises corresponding network load information to described PCRF.
Particularly, the resource management module of described PCRF knows that from described MME network load information specifically comprises: issue the offered load subscribe request to described MME, and receive the subscribing notification that comprises Query Result that described MME reports; The network load information maintenance module of described MME is according to described offered load subscribe request, and periodicity or incident report the subscribing notification that comprises corresponding network load information.
The MME information of described IP-CAN session association comprises IP-CAN session label information and MME identification information, and the MME information of described PCRF knows that module also is used to set up the corresponding relation of MME information and described IP-CAN session label information; Described resource management module knows that according to described MME the corresponding relation that module is set up carries IP-CAN session label information described MME correspondence, that will inquire about in the query requests or the subscribe request that send; The offered load enquiry module of described MME is according to the corresponding offered load of described IP-CAN session label information inquiry; Described IP-CAN session label information refers to the identification information and/or APN (APN) information of terminal.
When the MME of described PCRF information knows that module learns the new MME information of described IP-CAN session association, upgrade the MME information corresponding with described IP-CAN session label information; Described session management module and described new MME also are used to finish the session with former MME when setting up session, during corresponding IP-CAN conversation end, also be used to finish the session with related MME; The session processing module of former MME also is used to finish the session with described PCRF.
Claims (15)
1. a method for managing resource is characterized in that, this method comprises:
"Policy and Charging Rules Function (PCRF) knows that IP connects mobile management unit (MME) information of Access Network (IP-CAN) session association;
Described PCRF sets up session according to MME information and the described MME known;
Described PCRF is known network load information by the session of setting up from described MME, and carries out resource management according to described network load information.
2. the method for claim 1, it is characterized in that: described PCRF knows that the step of the MME information of IP-CAN session association specifically comprises: IAD (S-GW) sends message, the MME information of wherein carrying the IP-CAN session association to packet data gateway (P-GW); Described P-GW sends message, the MME information of wherein carrying described IP-CAN session association to described PCRF.
3. the method for claim 1, it is characterized in that: described PCRF knows that the step of the MME information of IP-CAN session association specifically comprises:
IAD (S-GW) or home subscriber server (HSS) initiatively send the message of the MME information of carrying described IP-CAN session association to described PCRF;
Or described PCRF sends the query requests of the IP-CAN session label information of carrying the MME associating information that will inquire about to S-GW or HSS; Described S-GW or HSS return the MME information of described IP-CAN session association according to described query requests.
4. the method for claim 1, it is characterized in that: described PCRF knows that from described MME network load information specifically comprises: described PCRF sends the offered load query requests to described MME; Described MME is according to described offered load query requests requester network load information, and returns the Query Result that comprises corresponding network load information to described PCRF.
5. the method for claim 1, it is characterized in that: described PCRF knows that from described MME network load information specifically comprises: described PCRF issues the offered load subscribe request to described MME; Described MME reports the subscribing notification that comprises corresponding network load information according to described offered load subscribe request periodicity or incident.
6. as claim 4 or 5 described methods, it is characterized in that: the MME information of described IP-CAN session association comprises IP-CAN session label information and MME identification information, before described PCRF was known network load information from described MME, this method also comprises: described PCRF set up the corresponding relation of MME information and described IP-CAN session label information; Described PCRF carries IP-CAN session label information described MME correspondence, that will inquire about according to the described corresponding relation of setting up in query requests that sends or subscribe request; Described MME is according to the corresponding offered load of described IP-CAN session label information inquiry; Described IP-CAN session label information refers to the identification information and/or APN (APN) information of terminal.
7. the method for claim 1 is characterized in that: when described PCRF learns the new MME information of described IP-CAN session association, set up session with described new MME, and the session of end and former MME.
8. a resource management system is characterized in that, this system comprises: "Policy and Charging Rules Function (PCRF) entity and mobile management unit (MME), wherein,
Described "Policy and Charging Rules Function (PCRF) entity comprises that MME information knows module, session management module and resource management module, wherein,
Described MME information is known module, is used to know mobile management unit (MME) information of IP-CAN session association;
Described session management module is used for knowing that according to described MME information MME information and described MME that module is known set up session;
Described resource management module is used for knowing network load information by the session that described session management module is set up from described MME, and carries out resource management according to described network load information;
Described MME comprises session processing module and offered load enquiry module, wherein:
Described session processing module is used for setting up session with described PCRF;
Described network load information maintenance module is used for the maintaining network load information, and the session of setting up by described session processing module reports described network load information to described PCRF.
9. system as claimed in claim 8 is characterized in that: described system also comprises IAD (S-GW) and packet data gateway (P-GW), and described S-GW is used for sending message, the MME information of wherein carrying the IP-CAN session association to described P-GW; Described P-GW is used to receive the message that described S-GW sends, and sends message, the MME information of wherein carrying described IP-CAN session association to described PCRF; The MME information of described PCRF knows that module receives the message of described P-GW transmission to know described MME information.
10. system as claimed in claim 8, it is characterized in that: described system also comprises IAD (S-GW) or home subscriber server (HSS), described access network element or HSS are used for initiatively sending message to described PCRF, wherein carry the MME information of described IP-CAN session association, the MME information of described PCRF knows that module receives the message of described S-GW transmission to know described MME information.
11. system as claimed in claim 8, it is characterized in that: described system also comprises IAD (S-GW) or home subscriber server (HSS), described access network element or HSS are used to receive the query requests of described PCRF, and send message to described PCRF according to described query requests, wherein carry the MME information of described IP-CAN session association, the MME information of described PCRF is known module, be used for sending the query requests of the IP-CAN session label information of carrying the MME associating information that to inquire about, and receive message that described S-GW sends to know described MME information to described S-GW or HSS.
12. system as claimed in claim 8 is characterized in that: the resource management module of described PCRF knows that from described MME network load information specifically comprises: send the offered load query requests to described MME, and receive the Query Result that described MME sends; The network load information maintenance module of described MME according to described offered load query requests requester network load information, and returns the Query Result that comprises corresponding network load information to described PCRF.
13. system as claimed in claim 8, it is characterized in that: the resource management module of described PCRF knows that from described MME network load information specifically comprises: issue the offered load subscribe request to described MME, and receive the subscribing notification that comprises Query Result that described MME reports; The network load information maintenance module of described MME is according to described offered load subscribe request, and periodicity or incident report the subscribing notification that comprises corresponding network load information.
14. as claim 12 or 13 described systems, it is characterized in that: the MME information of described IP-CAN session association comprises IP-CAN session label information and MME identification information, and the MME information of described PCRF knows that module also is used to set up the corresponding relation of MME information and described IP-CAN session label information; Described resource management module knows that according to described MME the corresponding relation that module is set up carries IP-CAN session label information described MME correspondence, that will inquire about in the query requests or the subscribe request that send; The offered load enquiry module of described MME is according to the corresponding offered load of described IP-CAN session label information inquiry; Described IP-CAN session label information refers to the identification information and/or APN (APN) information of terminal.
15. system as claimed in claim 8 is characterized in that: when the MME of described PCRF information knows that module learns the new MME information of described IP-CAN session association, upgrade the MME information corresponding with described IP-CAN session label information; Described session management module and described new MME also are used to finish the session with former MME when setting up session, during corresponding IP-CAN conversation end, also be used to finish the session with related MME; The session processing module of former MME also is used to finish the session with described PCRF.
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| CN110048951B (en) * | 2018-01-16 | 2020-11-27 | 中国移动通信有限公司研究院 | PCF addressing method and device, equipment and storage medium |
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