CN101141821A - Strategy and charge execution function node locating method of wireless communication network - Google Patents
Strategy and charge execution function node locating method of wireless communication network Download PDFInfo
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Abstract
A wireless communication network strategy and charging implementing function node positioning method. The method is applied in the PCRF and P-GW wireless communication network containing the 3GPP evolved packet system, the main PCEF node containing partial strategy and charging implementing function exists in the P-GW, and the main PCEF node is connected with the slave PCEF node in the other network element device containing the other part of strategy and charging implementing function through the network, when the P-GW receives the message provided by the first strategy and charging rule transmitted by the PCRF and used to perform bearing strategy and charging control to the mobile terminal service, the IP address of the slave PCEF node is acquired, and the IP address is contained in the first strategy and charging rule responding message and transmitted to the PCRF. The adoption of the method of the invention can position the second PCEF node conveniently and accurately when the new service is established for the mobile terminal and when the bearing strategy and charging control is performed to the existing service.
Description
Technical field
The present invention relates to a kind of strategy and charge execution function node locating method of cordless communication network, relate in particular to the strategy and the charge execution function node locating method of a kind of 3GPP (3rd Generation Partnership Project, third generation partner program) evolved packet system network.
Background technology
3GPP evolved packet system (Evolved Packet System, be called for short EPS) by E-UTRAN (Evolved Universal Terrestrial Radio Access Network, the universal land radio access web of evolution), MME (mobile management unit, Mobility Management Entity), S-GW (gateway, Serving Gateway), P-GW (Packet Data Network GateWay, data network gateway), HSS (home subscriber server, Home Subscriber Server), 3GPP aaa server (3GPP authentication and authorization charging server), PCRF (Policy and Charging RulesFunction, "Policy and Charging Rules Function), reaching other supporting network element device forms.Wherein MME is responsible for the processing of mobile management, Non-Access Stratum signaling, user's chain of command related works such as the contextual management of 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 then is the borde gateway of 3GPP evolved packet system and PDN (Packet Data Network, data network), is responsible for user terminal and transmits functions such as data to the access of PDN, between EPS and PDN.PCRF is the "Policy and Charging Rules Function entity, it is by Rx interface and operator's IP operation network interface, obtain business information, and link to each other with gateway device in the network by the S7/S7a/S7b/S7c interface, be responsible for initiating IP (Internet Protocol, Internet protocol) and carry strategic decision-making, foundation, deletion as carrying, the QoS of business datum/carrying (Quality Of Service, service quality) etc., and the control of chargeing.
EPS supports the intercommunication with non-3GPP network.The intercommunication of EPS and non-3GPP network realizes that by the S2a/b/c interface P-GW is as 3GPP and the internetwork anchor point of non-3GPP.The system architecture diagram of EPS as shown in Figure 1.Wherein non-3GPP network is divided into the non-3GPP network of trusted and trustless non-3GPP network.The access of user terminal can be directly by S2a and P-GW interface in the non-3GPP network of trusted; The access of user terminal need be passed through ePDG (Evolved PacketData Gateway, the data gateway of evolution) and links to each other with P-GW in trustless non-3GPP network, and the interface between ePDG and P-GW is S2b.
In traditional 3GPP network, strategy and charge execution function (Policy and chargingenforcement function, be called for short PCEF) exist only among the P-GW, PCRF needs only the control that can finish all functions such as comprising QoS corresponding strategies and charging with the P-GW interface, passes through S7 interface exchange message between PCRF and P-GW.But, after the 3GPP network provides IWF with non-3GPP, interface when between P-GW and S-GW is based on PMIP (Proxy Mobile IP, proxy-mobile IP) time, because the limitation of PMIP interface, can not the transmission policy charge information, the partial function of PCEF, for example Cheng Zai binding function etc. has been moved among the S-GW, between S-GW and the PCRF by S7c interface exchange message.When non-3 GPP system by between S2a/S2b interface and 3GPP system during the intercommunication access, the also function of resident part PCEF in the non-3 GPP system.For example, for the non-3GPP network of trusted, the resident function of part PCEF in the gateway device; For trustless non-3GPP network, the function of part PCEF that ePDG is resident.When non-3 GPP system is connecting system trusty (trusting non-3GPP inserts), pass through S7a interface exchange message between PCRF and non-3 GPP system; When non-3 GPP system is fly-by-night connecting system (the non-3GPP of non-trust inserts), pass through S7b interface exchange message between PCRF and non-3 GPP system.
When PCEF only resided in P-GW, PCRF searched corresponding P-GW by the IP address and the portable terminal ID (identifier) of portable terminal.This is reasonably, because in general the address space that P-GW managed is nonoverlapping, can find P-GW according to the IP address.
But, when the function of PCEF is distributed to a plurality of network element devices, when promptly having a plurality of PCEF node, following problem can appear: all PCEF nodes that PCRF correctly found belong to a certain IP of a certain portable terminal to connect.Specifically, when PCEF resides in other network element device simultaneously, as in S-GW or ePDG or the non-3 GPP system time, because onrelevant relation between the IP address of portable terminal and these network element devices, can't locate these network element devices according to IP address or portable terminal ID, promptly can't locate the PCEF node that is present in these network element devices.For convenience of description, the PCEF that will be present in herein among the P-GW is called a PCEF node (or main PCEF node); The PCEF that is present in other network element device is called the 2nd PCEF node (or subordinate PCEF node).
Because set up the IP connection of a certain PDN by P-GW when portable terminal after, set up the PMIP tunnel between PCEF node in P-GW and the 2nd PCEF node, a PCEF node can obtain information such as the 2nd PCEF IP addresses of nodes according to the IP address and the portable terminal ID of portable terminal; Therefore, a kind of method of acquisition the 2nd PCEF IP addresses of nodes information is when first IP that is established to a certain PDN connects the 2nd PCEF IP addresses of nodes information to be registered among the PCRF, and PCRF obtains the 2nd PCEF IP addresses of nodes information that this IP connects thus.
The weak point that the 2nd PCEF IP addresses of nodes information that PCRF adopts said method to obtain the IP connection exists is: because in the process that portable terminal moves, the 2nd PCEF node can switch, therefore, after switching, need to upgrade the related registration information among the PCRF, increased the complexity of flow process.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the deficiency that PCRF in the prior art obtains the method for the 2nd PCEF IP addresses of nodes that IP connects, and proposes the method that a kind of simple location belongs to the 2nd PCEF node that same IP connects.
In order to address the above problem, the invention provides a kind of strategy and charge execution function node locating method of cordless communication network, be applied to comprise in the cordless communication network of the PCRF of 3GPP evolved packet system and P-GW, and the main PCEF node that comprises partial strategy and charge execution function is present among the P-GW, and link to each other by network with the subordinate PCEF node that is present in other network element device that comprises another part strategy and charge execution function, it is characterized in that, the business of portable terminal is carried strategic decision-making and first policy charging rule of the control of chargeing when giving information when P-GW being used for of receiving that PCRF sends, obtain subordinate PCEF IP addresses of nodes, and this IP address packet is contained in the first policy charging rule response message sends to PCRF.
In addition, link to each other by tunnel between described main PCEF node and subordinate PCEF node based on PMIP; The IP address that comprises described portable terminal during described first policy charging rule gives information; When described P-GW receives described first policy charging rule when giving information, according to the IP address lookup tunnel context of described portable terminal, only when having corresponding tunnel context, send the described first policy charging rule response message that comprises subordinate PCEF IP addresses of nodes.
In addition, after described PCRF receives the described first policy charging rule response message, be used for that to the transmission of this subordinate PCEF node the business of described portable terminal is carried strategic decision-making according to the subordinate PCEF IP addresses of nodes that comprises in this response message and give information with second policy charging rule of controlling that charges.
In addition, described subordinate PCEF node is present in the S-GW of 3GPP evolved packet system, or the non-3GPP gateway of trusted, or among the ePDG.
In addition, this method comprises following steps:
A: after described PCRF received the business demand of described portable terminal of the business network that is connected to described P-GW, first policy charging rule that is included as first control rule of policy billing that this business demand generates given information sent to this P-GW;
B: receive after this first policy charging rule gives information, the first policy charging rule response message that P-GW will comprise subordinate PCEF IP addresses of nodes sends to PCRF;
Second policy charging rule that C:PCRF will be included as second control rule of policy billing that this business demand generates gives information and sends to this subordinate PCEF node.
In addition, described portable terminal has been set up the default IP carrying of business network that P-GW connects, and described business demand is to set up the new business of described portable terminal at described business network; Also comprise following steps after the described step C:
D1: described subordinate PCEF node is set up new special I P carrying for this business or it is mapped in the existing IP carrying;
E1: this subordinate PCEF node sends the second policy charging rule response message to described PCRF.
In addition, described portable terminal has been set up default IP carrying and one or more special I P carrying of business network that P-GW connects, and described business demand is for revising the QoS of described portable terminal in the business of described business network; Also comprise following steps after the described step C:
D2: described subordinate PCEF node is searched the special I P carrying of this business correspondence according to the traffic filter template that comprises in described second control rule of policy billing, and revises the QoS of this special I P carrying;
E2: subordinate PCEF node sends the second policy charging rule response message to described PCRF.
In addition, described portable terminal has been set up default IP carrying and one or more special I P carrying of business network that P-GW connects, and described business demand is for discharging the business of described portable terminal at described business network; Also comprise following steps after the described step C:
D3: described subordinate PCEF node is searched the special I P carrying of this business correspondence according to the traffic filter template that comprises in described second control rule of policy billing;
E3:, then discharge this special I P carrying if this business is last business of this special I P carrying; Otherwise, should business from this special I P carrying, delete;
F3: subordinate PCEF node sends the second policy charging rule response message to described PCRF.
In addition, the QoS that comprises described business or its corresponding IP carrying in the described second policy charging rule response message.
In addition, comprise the ID of described portable terminal during described first policy charging rule gives information, described P-GW is according to the IP address and the ID inquiry tunnel context of portable terminal; Described P-GW obtains described subordinate PCEF IP addresses of nodes from the tunnel context that inquiry obtains.
As from the foregoing, adopt PCEF node positioning method of the present invention, can need be for portable terminal set up new business or convenient the 2nd PCEF node of locating exactly when existing business carried strategic decision-making and charge control.
Description of drawings
Fig. 1 is the system architecture diagram of EPS;
Fig. 2 is a first embodiment of the invention PCEF node positioning method flow chart;
Fig. 3 is a second embodiment of the invention PCEF node positioning method flow chart;
Fig. 4 is a third embodiment of the invention PCEF node positioning method flow chart;
Fig. 5 is a fourth embodiment of the invention PCEF node positioning method flow chart;
Fig. 6 is a fifth embodiment of the invention PCEF node positioning method flow chart;
Fig. 7 is a sixth embodiment of the invention PCEF node positioning method flow chart;
Fig. 8 is a seventh embodiment of the invention PCEF node positioning method flow chart;
Fig. 9 is an eighth embodiment of the invention PCEF node positioning method flow chart;
Figure 10 is a ninth embodiment of the invention PCEF node positioning method flow chart.
Embodiment
After analyzing the flow process of PCRF and the information interaction of PCEF as can be known: before the 2nd PCEF node transmission message, PCRF can at first carry out interacting message with a PCEF node, to obtain the acceptance of a PCEF node at PCRF.Therefore, can be when PCRF and a PCEF node carry out interacting message, the 2nd PCEF IP addresses of nodes information sent in the receiving information of PCRF by a PCEF node bring PCRF.
Describe the present invention below in conjunction with drawings and Examples.
First embodiment
Fig. 2 is a first embodiment of the invention PCEF node positioning method flow chart.
What present embodiment was described is to be in the 3GPP coverage when portable terminal (UE), and the employing of 3GPP core net is the EPC framework; In EPC, interface protocol between S-GW and P-GW is based on PMIP, be that S-GW and P-GW have set up the PMIP tunnel, comprise the 2nd PCEF node among the S-GW, this node provides and the relevant strategy decisive function of QoS/ carrying, as the foundation of IP carrying, and the modification of IP carrying, the release of IP carrying etc., and UE has set up the default IP carrying of business network by S-GW and P-GW.If PCRF decision is required to be this UE when the new business of above-mentioned business network provides the carrying strategic decision-making and/or charge and serve (receiving the demand of setting up new business from this business network such as PCRF), PCRF will initiate the execution of this flow process.As shown in Figure 2, present embodiment comprises following steps:
201:PCRF obtains new business demand, and whether PCRF accepts this new business demand according to the CAMEL-Subscription-Information decision of business information and this business corresponding mobile terminal; If this new business is accepted in the PCRF decision, then PCRF generates PCC Rule (Policy Charging Control Rule for this new business, control rule of policy billing), also can be referred to as first control rule of policy billing, and the policy charging rule that will comprise this PCC Rule give information (also can be referred to as first policy charging rule gives information) send to corresponding P-GW;
Include among the above-mentioned PCC Rule and describe this professional TFT (Traffic Filter Template, traffic filter template), this professional QoS information and charge information that should business;
The IP address that PCRF inquires corresponding P-GW according to the IP address and the portable terminal ID of this business corresponding mobile terminal; The IP address that comprises this portable terminal during above-mentioned policy charging rule gives information.
202:P-GW receives after above-mentioned policy charging rule gives information, according to the IP address of this business corresponding mobile terminal and the corresponding tunnel context of ID inquiry of portable terminal; If corresponding tunnel context exists, and P-GW accepts the foundation of this new business according to the load condition decision of self, and then P-GW sends policy charging rule response message (also can be referred to as the first policy charging rule response message) to PCRF;
If that the interface protocol between above-mentioned tunnel context demonstration P-GW and the S-GW adopts is PMIP, then comprise the IP address of S-GW in this policy charging rule response message.
After 203:PCRF received above-mentioned policy charging rule response message, if comprise the IP address of S-GW in this response message, then PCRF generated this professional qos policy rule according to above-mentioned PCC Rule, also can be referred to as second control rule of policy billing; PCRF with this qos policy rule by the qos policy rule give information (also can be referred to as second policy charging rule gives information) send to the S-GW (being the pairing S-GW in IP address that comprises S-GW in the above-mentioned policy charging rule response message) of P-GW appointment.
204: receive after above-mentioned qos policy rule gives information, whether the S-GW decision is required to be is set up new special I P carrying between this new business and UE, maybe this new business is mapped in the existing IP carrying.If the S-GW decision need be set up new special I P carrying, then S-GW initiates the flow process of setting up of special I P carrying; If the S-GW decision is mapped to this business in the existing IP carrying, then S-GW initiates the constant bearing modification flow process of QoS.
205: set up or after the bearing modification flow process finishes at the above-mentioned dedicated bearer between S-GW and UE, S-GW sends qos policy rule response message (also can be referred to as the second policy charging rule response message) to PCRF, corresponding carrying foundation or the bearing modification flow process of expression finished, and the actual QoS information of this IP carrying/this business correspondence sent to PCRF after foundation finished.
Second embodiment
Fig. 3 is a second embodiment of the invention PCEF node positioning method flow chart.
What present embodiment was described is to be in the 3GPP coverage when portable terminal (UE), and the employing of 3GPP core net is the EPC framework; In EPC, interface protocol between S-GW and P-GW is based on PMIP, be that S-GW and P-GW have set up the PMIP tunnel, comprise the 2nd PCEF node among the S-GW, this node provides and the relevant strategy decisive function of QoS/ carrying, as the foundation of IP carrying, the modification of IP carrying, the deletion of IP carrying etc., and UE set up the default IP carrying of business network by S-GW and P-GW, and one or more special I P carrying.If when PCRF decision needs to revise this UE to the QoS attribute of a certain business of above-mentioned business network (receiving business modification request from business network such as PCRF), PCRF will initiate the execution of this flow process.As shown in Figure 3, present embodiment comprises following steps:
301:PCRF determines the QoS of a certain business to change, and PCRF generates new PCC Rule according to this QoS modification demand; The policy charging rule that PCRF will comprise this PCC Rule gives information and sends to corresponding P-GW;
Include among the above-mentioned PCC Rule and describe this professional TFT, this professional QoS information and charge information that should business;
The IP address that PCRF inquires corresponding P-GW according to the IP address and the portable terminal ID of this business corresponding mobile terminal; The IP address that comprises this portable terminal during above-mentioned policy charging rule gives information.
302:P-GW receives after above-mentioned policy charging rule gives information, according to the IP address of this business corresponding mobile terminal and the corresponding tunnel context of ID inquiry of portable terminal; If corresponding tunnel context exists, and this professional QoS of P-GW permission modification, then P-GW sends the policy charging rule response message to PCRF;
If that the interface protocol between above-mentioned tunnel context demonstration P-GW and the S-GW adopts is PMIP, then comprise the IP address of S-GW in this policy charging rule response message.
After 303:PCRF received above-mentioned policy charging rule response message, if comprise the IP address of S-GW in this response message, then PCRF generated this professional qos policy rule according to above-mentioned PCC Rule; The S-GW (being the pairing S-GW in IP address that comprises S-GW in the above-mentioned policy charging rule response message) that PCRF gives information this qos policy rule to send to the P-GW appointment by the qos policy rule.
Comprise this professional TFT in the above-mentioned qos policy rule.
304: receive after above-mentioned qos policy rule gives information, S-GW searches the special I P carrying of this business correspondence and the QoS modification process of initiating this special I P carrying according to the TFT that comprises in this message.
305: after the above-mentioned special I P bearing modification flow process between S-GW and UE is finished, S-GW sends qos policy rule response message to PCRF, the special I P bearing modification success that expression is corresponding, and the actual QoS information of this IP carrying/business correspondence sent to PCRF after modification finished.
The 3rd embodiment
Fig. 4 is a third embodiment of the invention PCEF node positioning method flow chart.
What present embodiment was described is to be in the 3GPP coverage when portable terminal (UE), and the employing of 3GPP core net is the EPC framework; In EPC, interface protocol between S-GW and P-GW is based on PMIP, be that S-GW and P-GW have set up the PMIP tunnel, comprise the 2nd PCEF node among the S-GW, this node provides and the relevant strategy decisive function of QoS/ carrying, as the foundation of IP carrying, the modification of IP carrying, the deletion of IP carrying etc., and UE set up the default IP carrying of business network by S-GW and P-GW, and one or more special I P carrying.If when PCRF decision needs to discharge this UE professional to a certain special I P carrying of above-mentioned business network, PCRF will initiate the execution of this flow process.As shown in Figure 4, present embodiment comprises following steps:
The 401:PCRF decision discharges a certain business, and PCRF generates this professional PCC Rule; The policy charging rule that PCRF will comprise this PCC Rule gives information and sends to corresponding P-GW;
Include among the above-mentioned PCC Rule and describe this professional TFT, this professional QoS information and charge information that should business;
The IP address that PCRF inquires corresponding P-GW according to the IP address and the portable terminal ID of this business corresponding mobile terminal; The IP address that comprises this portable terminal during above-mentioned policy charging rule gives information.
402:P-GW receives after above-mentioned policy charging rule gives information, according to the IP address of this business corresponding mobile terminal and the corresponding tunnel context of ID inquiry of portable terminal; If corresponding tunnel context exists, and this business of P-GW permission release, then P-GW sends the policy charging rule response message to PCRF;
If that the interface protocol between above-mentioned tunnel context demonstration P-GW and the S-GW adopts is PMIP, then comprise the IP address of S-GW in this policy charging rule response message.
After 403:PCRF received above-mentioned policy charging rule response message, if comprise the IP address of S-GW in this response message, then PCRF generated this professional qos policy rule according to above-mentioned PCC Rule; The S-GW (being the pairing S-GW in IP address that comprises S-GW in the above-mentioned policy charging rule response message) that PCRF gives information this qos policy rule to send to the P-GW appointment by the qos policy rule.
404: receive after above-mentioned qos policy rule gives information, S-GW searches the special I P carrying of this business correspondence; If this business is last business of this special I P carrying, then S-GW initiates to discharge the flow process of this dedicated bearer; Otherwise S-GW initiates the constant dedicated bearer modification process of QoS, and this business is deleted from the business that this special I P carrying is supported;
S-GW searches the special I P carrying of this business correspondence according to the TFT that comprises in the qos policy rule.
405: after the above-mentioned dedicated bearer between S-GW and UE discharged or should business finishes from this dedicated bearer deletion, S-GW sent qos policy rule response message to PCRF, the corresponding special I P carrying of expression discharge or this special I P carrying on this business delete successfully.
The 4th embodiment
Fig. 5 is a fourth embodiment of the invention PCEF node positioning method flow chart.
What present embodiment was described is to be in the non-3GPP network coverage of trusted when portable terminal (UE), is connected by the PMIP tunnel between the network element device (being generally gateway) at the 2nd PCEF node place in the non-3GPP network of trusted and P-GW; The 2nd PCEF node provides and the relevant strategy decisive function of QoS/ carrying, as the foundation of IP carrying, and the modification of IP carrying, the deletion of IP carrying etc., and UE has set up the default IP carrying of business network that P-GW connects.If PCRF decision is required to be this UE when the new business of above-mentioned business network provides the carrying strategic decision-making and/or charge and serve (receiving the demand of setting up new business from this business network such as PCRF), PCRF will initiate the execution of this flow process.As shown in Figure 5, present embodiment comprises following steps:
501:PCRF obtains new business demand, and whether PCRF accepts this new business demand according to the CAMEL-Subscription-Information decision of business information and this business corresponding mobile terminal; If this new business is accepted in PCRF decision, then PCRF generates PCC Rule for this new business, and the policy charging rule that will comprise this PCC Rule gives information and sends to the P-GW of correspondence;
Include among the above-mentioned PCC Rule and describe this professional TFT, this professional QoS information and charge information that should business;
The IP address that PCRF inquires corresponding P-GW according to the IP address and the portable terminal ID of this business corresponding mobile terminal; The IP address that comprises this portable terminal during above-mentioned policy charging rule gives information.
502:P-GW receives after above-mentioned policy charging rule gives information, according to the IP address of this business corresponding mobile terminal and the corresponding tunnel context of ID inquiry of portable terminal; If corresponding tunnel context exists, and P-GW accepts the foundation of this new business according to the load condition decision of self, and then P-GW sends the policy charging rule response message to PCRF;
If it is PMIP (be interface protocol that the tunnel connects adopt be PMIP) that above-mentioned tunnel context shows the type in above-mentioned tunnel, the IP address that then comprises the opposite end, tunnel (the non-3GPP gateway of trusted) that links to each other with P-GW in this policy charging rule response message, i.e. the 2nd PCEF IP addresses of nodes.
P-GW can obtain the IP address of the non-3GPP gateway of this trusted in above-mentioned tunnel context.
After 503:PCRF received above-mentioned policy charging rule response message, if comprise the 2nd PCEF IP addresses of nodes in this response message, then PCRF generated this professional qos policy rule according to above-mentioned PCC Rule; The network element device (being the non-3GPP gateway of the pairing trusted of the 2nd PCEF IP addresses of nodes that comprises in the above-mentioned policy charging rule response message) that PCRF gives information this qos policy rule to send to the 2nd PCEF node place by the qos policy rule.
504: receive after above-mentioned qos policy rule gives information, whether the non-3GPP gateway decision of this trusted is required to be is set up new special I P carrying between this new business and UE, maybe this new business is mapped in the existing carrying.If this gateway decision need be set up new special I P carrying, then initiate the flow process of setting up of dedicated bearer; If this gateway decision is mapped to this business in the existing carrying, then initiate the constant bearing modification flow process of QoS.
505: set up or after the bearing modification flow process finishes at the above-mentioned dedicated bearer between non-3GPP gateway of this trusted and UE, this gateway sends qos policy rule response message to PCRF, corresponding carrying foundation or the bearing modification flow process of expression finished, and the actual QoS information of this IP carrying/this business correspondence sent to PCRF after foundation finished.
The 5th embodiment
Fig. 6 is a fifth embodiment of the invention PCEF node positioning method flow chart.
What present embodiment was described is to be in the non-3GPP network coverage of trusted when portable terminal (UE), is connected by the PMIP tunnel between the network element device (being generally gateway) at the 2nd PCEF node place in the non-3GPP network of trusted and P-GW; The 2nd PCEF node provides the strategy decisive function relevant with QoS/ carrying, as the foundation of IP carrying, and the modification of IP carrying, the deletion of IP carrying etc., and the default IP that UE has set up business network that P-GW connects carries, and reaches one or more special I P and carries.If when PCRF decision needs to revise this UE to the QoS attribute of a certain business of above-mentioned business network (receiving business modification request from business network such as PCRF), PCRF will initiate the execution of this flow process.As shown in Figure 6, present embodiment comprises following steps:
601:PCRF determines the QoS of a certain business to change, and PCRF generates new PCC Rule according to this QoS modification demand; The policy charging rule that PCRF will comprise this PCC Rule gives information and sends to corresponding P-GW;
Include among the above-mentioned PCC Rule and describe this professional TFT, this professional QoS information and charge information that should business.
The IP address that PCRF inquires corresponding P-GW according to the IP address and the portable terminal ID of this business corresponding mobile terminal; The IP address that comprises this portable terminal during above-mentioned policy charging rule gives information.
602:P-GW receives after above-mentioned policy charging rule gives information, according to the IP address of this business corresponding mobile terminal and the corresponding tunnel context of ID inquiry of portable terminal; If corresponding tunnel context exists, and this professional QoS of P-GW permission modification, then P-GW sends the policy charging rule response message to PCRF;
If it is PMIP (be interface protocol that the tunnel connects adopt be PMIP) that above-mentioned tunnel context shows the type in tunnel, the IP address that then comprises the opposite end, tunnel (the non-3GPP gateway of trusted) that links to each other with P-GW in this policy charging rule response message, i.e. the 2nd PCEF IP addresses of nodes.
P-GW can obtain the IP address of the non-3GPP gateway of this trusted in above-mentioned tunnel context.
After 603:PCRF received above-mentioned policy charging rule response message, if comprise the 2nd PCEF IP addresses of nodes in this response message, then PCRF generated this professional qos policy rule according to above-mentioned PCC Rule; The network element device (being the non-3GPP gateway of the pairing trusted of the 2nd PCEF IP addresses of nodes that comprises in the above-mentioned policy charging rule response message) that PCRF gives information this qos policy rule to send to the 2nd PCEF node place by the qos policy rule;
Comprise this professional TFT in the above-mentioned qos policy rule.
604: receive after above-mentioned qos policy rule gives information, the non-3GPP gateway of this trusted is searched the special I P carrying corresponding with this business according to the TFT that comprises in this message, and initiates the QoS modification process of dedicated bearer.
605: after the QoS modification process of the above-mentioned dedicated bearer between non-3GPP gateway of this trusted and UE is finished, this gateway sends qos policy rule response message to PCRF, the QoS modification process of the special I P carrying that expression is corresponding is finished, and the corresponding actual QoS information of this IP carrying sent to PCRF after modification finished.
The 6th embodiment
Fig. 7 is a sixth embodiment of the invention PCEF node positioning method flow chart.
What present embodiment was described is to be in the non-3GPP network coverage of trusted when portable terminal (UE), is connected by the PMIP tunnel between the network element device (being generally gateway) at the 2nd PCEF node place in the non-3GPP network of trusted and P-GW; The 2nd PCEF node provides the strategy decisive function relevant with QoS/ carrying, as the foundation of IP carrying, and the modification of IP carrying, the deletion of IP carrying etc., and the default IP that UE has set up business network that P-GW connects carries, and reaches one or more special I P and carries.If when PCRF decision needs to discharge this UE professional to a certain special I P carrying of above-mentioned business network, PCRF will initiate the execution of this flow process.As shown in Figure 7, present embodiment comprises following steps:
The 701:PCRF decision discharges a certain business, and PCRF generates this professional PCC Rule; The policy charging rule that PCRF will comprise this PCC Rule gives information and sends to corresponding P-GW;
Include among the above-mentioned PCC Rule and describe this professional TFT, this professional QoS information and charge information that should business;
The IP address that PCRF inquires corresponding P-GW according to the IP address and the portable terminal ID of this business corresponding mobile terminal; The IP address that comprises this portable terminal during above-mentioned policy charging rule gives information.
702:P-GW receives after above-mentioned policy charging rule gives information, according to the IP address of this business corresponding mobile terminal and the corresponding tunnel context of ID inquiry of portable terminal; If the tunnel context corresponding with default IP carrying exists, and this business of P-GW permission release, then P-GW sends the policy charging rule response message to PCRF;
If it is PMIP (be interface protocol that the tunnel connects adopt be PMIP) that above-mentioned tunnel context shows the type in tunnel, the IP address that then comprises the opposite end, tunnel (the non-3GPP gateway of trusted) that links to each other with P-GW in this policy charging rule response message, i.e. the 2nd PCEF IP addresses of nodes.
P-GW can obtain the IP address of the non-3GPP gateway of this trusted in above-mentioned tunnel context.
After 703:PCRF received above-mentioned policy charging rule response message, if comprise the 2nd PCEF IP addresses of nodes in this response message, then PCRF generated this professional qos policy rule according to above-mentioned PCC Rule; The network element device (being the non-3GPP gateway of the pairing trusted of the 2nd PCEF IP addresses of nodes that comprises in the above-mentioned policy charging rule response message) that PCRF gives information this qos policy rule to send to the 2nd PCEF node place by the qos policy rule.
704: receive after above-mentioned qos policy rule gives information, the non-3GPP gateway of this trusted is searched the special I P carrying of this business correspondence; If this business is last business of this special I P carrying, then the non-3GPP gateway of trusted initiates to discharge the flow process of this dedicated bearer; Otherwise the non-3GPP gateway of trusted is initiated the constant dedicated bearer modification process of QoS, and this business is deleted from the business that this special I P carrying is supported.
705: after the carrying of the above-mentioned special I P between non-3GPP gateway of this trusted and UE discharges or should business finishes from this special I P deleting load-bearing, the non-3GPP gateway of this trusted is to PCRF transmission qos policy rule response message, and the special I P carrying release that expression is corresponding or this business in this special I P carrying are deleted successfully.
The 7th embodiment
Fig. 8 is a seventh embodiment of the invention PCEF node positioning method flow chart.
What present embodiment was described is to be in the non-3GPP network coverage of non-trust when portable terminal (UE), is connected by the PMIP tunnel between the network element device (being generally ePDG) at the 2nd PCEF node place in the non-3GPP network of non-trust and P-GW; The 2nd PCEF node provides and the relevant strategy decisive function of QoS/ carrying, as the foundation of IP carrying, and the modification of IP carrying, the deletion of IP carrying etc., and UE has set up the default IP carrying of business network that P-GW connects.If PCRF decision is required to be this UE when the new business of above-mentioned business network provides the carrying strategic decision-making and/or charge and serve (receiving the demand of setting up new business from this business network such as PCRF), PCRF will initiate the execution of this flow process.As shown in Figure 8, present embodiment comprises following steps:
801:PCRF obtains new business demand, and whether PCRF accepts this new business demand according to the CAMEL-Subscription-Information decision of business information and this business corresponding mobile terminal; If this new business is accepted in PCRF decision, then PCRF generates PCC Rule for this new business, and the policy charging rule that will comprise this PCC Rule gives information and sends to the P-GW of correspondence;
Include among the above-mentioned PCC Rule and describe this professional TFT, this professional QoS information and charge information that should business;
The IP address that PCRF inquires corresponding P-GW according to the IP address and the portable terminal ID of this business corresponding mobile terminal; The IP address that comprises this portable terminal during above-mentioned policy charging rule gives information.
802:P-GW receives after above-mentioned policy charging rule gives information, according to the IP address of this business corresponding mobile terminal and the corresponding tunnel context of ID inquiry of portable terminal; If corresponding tunnel context exists, and P-GW accepts the foundation of this new business according to the load condition decision of self, and then P-GW sends the policy charging rule response message to PCRF;
If it is PMIP (be interface protocol that the tunnel connects adopt be PMIP) that above-mentioned tunnel context shows the type in tunnel, the IP address that then comprises the opposite end, tunnel (ePDG) that links to each other with P-GW in this policy charging rule response message, i.e. the 2nd PCEF IP addresses of nodes.
P-GW can obtain the IP address of ePDG in above-mentioned tunnel context.
After 803:PCRF receives above-mentioned policy charging rule response message, if comprise the 2nd PCEF IP addresses of nodes in this response message, i.e. the IP address of ePDG, then PCRF generates this professional qos policy rule according to above-mentioned PCC Rule; The ePDG (being the pairing ePDG of the 2nd PCEF IP addresses of nodes that comprises in the above-mentioned policy charging rule response message) that PCRF gives information this qos policy rule to send to the P-GW appointment by the qos policy rule.
804: receive after above-mentioned qos policy rule gives information, whether this ePDG decision is required to be is set up new special I P carrying between this new business and UE, maybe this new business is mapped in the existing carrying.If the ePDG decision need be set up new special I P carrying, then initiate the flow process of setting up of special I P carrying; If the ePDG decision is mapped to this business in the existing carrying, then initiate the constant bearing modification flow process of QoS.
805: set up or after the bearing modification flow process finishes at the above-mentioned dedicated bearer between this ePDG and UE, ePDG sends qos policy rule response message to PCRF, corresponding carrying foundation or the bearing modification flow process of expression finished, and the actual QoS information of this IP carrying/this business correspondence sent to PCRF after foundation finished.
The 8th embodiment
Fig. 9 is an eighth embodiment of the invention PCEF node positioning method flow chart.
What present embodiment was described is to be in the non-3GPP network coverage of non-trust when portable terminal (UE), is connected by the PMIP tunnel between the network element device (being generally ePDG) at the 2nd PCEF node place in the non-3GPP network of non-trust and P-GW; The 2nd PCEF node provides the strategy decisive function relevant with QoS/ carrying, as the foundation of IP carrying, and the modification of IP carrying, the deletion of IP carrying etc., and the default IP that UE has set up business network that P-GW connects carries, and reaches one or more special I P and carries.If when PCRF decision needs to revise this UE to the QoS attribute of a certain business of above-mentioned business network (receiving business modification request from business network such as PCRF), PCRF will initiate the execution of this flow process.As shown in Figure 9, present embodiment comprises following steps:
901:PCRF determines the QoS of a certain business to change, and PCRF generates new PCC Rule according to this QoS modification demand; The policy charging rule that PCRF will comprise this PCC Rule gives information and sends to corresponding P-GW;
Include among the above-mentioned PCC Rule and describe this professional TFT, this professional QoS information and charge information that should business.
The IP address that PCRF inquires corresponding P-GW according to the IP address and the portable terminal ID of this business corresponding mobile terminal; The IP address that comprises this portable terminal during above-mentioned policy charging rule gives information.
902:P-GW receives after above-mentioned policy charging rule gives information, according to the IP address of this business corresponding mobile terminal and the corresponding tunnel context of ID inquiry of portable terminal; If corresponding tunnel context exists, and this professional QoS of P-GW permission modification, then P-GW sends the policy charging rule response message to PCRF;
If it is PMIP (be interface protocol that the tunnel connects adopt be PMIP) that above-mentioned tunnel context shows the type in tunnel, the IP address that then comprises the opposite end, tunnel (ePDG) that links to each other with P-GW in this policy charging rule response message, i.e. the 2nd PCEF IP addresses of nodes.
P-GW can obtain the IP address of ePDG in above-mentioned tunnel context.
After 903:PCRF received above-mentioned policy charging rule response message, if comprise the 2nd PCEF IP addresses of nodes in this response message, then PCRF generated this professional qos policy rule according to above-mentioned PCC Rule; The ePDG (being the pairing ePDG of the 2nd PCEF IP addresses of nodes that comprises in the above-mentioned policy charging rule response message) that PCRF gives information this qos policy rule to send to the P-GW appointment by the qos policy rule.
Comprise this professional TFT in the above-mentioned qos policy rule.
904: receive after above-mentioned qos policy rule gives information, this ePDG searches the special I P carrying corresponding with this business according to the TFT that comprises in this message, and initiates the QoS modification process of dedicated bearer.
905: after the QoS of the above-mentioned dedicated bearer between ePDG and UE modification process is finished, this ePDG sends qos policy rule response message to PCRF, the QoS modification process of the special I P carrying that expression is corresponding is finished, and the corresponding actual QoS information of this IP carrying sent to PCRF after modification finished.
The 9th embodiment
Figure 10 is a ninth embodiment of the invention PCEF node positioning method flow chart.
What present embodiment was described is to be in the non-3GPP network coverage of non-trust when portable terminal (UE), is connected by the PMIP tunnel between the network element device (being generally ePDG) at the 2nd PCEF node place in the non-3GPP network of non-trust and P-GW; The 2nd PCEF node provides the strategy decisive function relevant with QoS/ carrying, as the foundation of IP carrying, and the modification of IP carrying, the deletion of IP carrying etc., and the default IP that UE has set up business network that P-GW connects carries, and reaches one or more special I P and carries.If PCRF decision needs to discharge this UE to a certain special I P carrying of above-mentioned business network during business, PCRF will initiate the execution of this flow process.As shown in figure 10, present embodiment comprises following steps:
The 1001:PCRF decision discharges a certain business, and PCRF generates this professional PCC Rule; The policy charging rule that PCRF will comprise this PCC Rule gives information and sends to corresponding P-GW;
Include among the above-mentioned PCC Rule and describe this professional TFT, this professional QoS information and charge information that should business;
The IP address that PCRF inquires corresponding P-GW according to the IP address and the portable terminal ID of this business corresponding mobile terminal; The IP address that comprises this portable terminal during above-mentioned policy charging rule gives information.
1002:P-GW receives after above-mentioned policy charging rule gives information, according to the IP address of this business corresponding mobile terminal and the corresponding tunnel context of ID inquiry of portable terminal; If corresponding tunnel context exists, and this business of P-GW permission release, then P-GW sends the policy charging rule response message to PCRF;
If it is PMIP (be interface protocol that the tunnel connects adopt be PMIP) that above-mentioned tunnel context shows the type in tunnel, the IP address that then comprises the opposite end, tunnel (ePDG) that links to each other with P-GW in this policy charging rule response message, i.e. the 2nd PCEF IP addresses of nodes;
P-GW can obtain the IP address of ePDG in above-mentioned tunnel context.
After 1003:PCRF received above-mentioned policy charging rule response message, if comprise the 2nd PCEF IP addresses of nodes in this response message, then PCRF generated this professional qos policy rule according to above-mentioned PCC Rule; The ePDG (being the pairing ePDG of the 2nd PCEF IP addresses of nodes that comprises in the above-mentioned policy charging rule response message) that PCRF gives information this qos policy rule to send to the P-GW appointment by the qos policy rule.
1004: receive after above-mentioned qos policy rule gives information, this ePDG searches the special I P carrying of this business correspondence; If this business is last business of this special I P carrying, then ePDG initiates to discharge the flow process of this dedicated bearer; Otherwise ePDG initiates the constant dedicated bearer modification process of QoS, and this business is deleted from the business that this special I P carrying is supported.
1005: after the carrying of the above-mentioned special I P between this ePDG and UE discharges or should business finishes from this special I P deleting load-bearing, ePDG is to PCRF transmission qos policy rule response message, and the special I P carrying release that expression is corresponding or this business in this special I P carrying are deleted successfully.
Though the 2nd PCEF node is only finished and carried/ strategy and charge execution function that QoS is relevant in the above-described embodiments, in fact the 2nd PCEF node can also be finished the control of chargeing and wait other strategy and charge execution function.
In addition, even between a PCEF node and the 2nd PCEF node is not to link to each other with the tunnel based on PMIP, in the time of can carrying out the policy, billing transmission of Information, carry out centralized control, also can adopt method of the present invention for the ease of strategy and charge execution function to business.
Claims (10)
1. the strategy of a cordless communication network and charge execution function node locating method, be applied to comprise in the cordless communication network of the PCRF of 3GPP evolved packet system and P-GW, and the main PCEF node that comprises partial strategy and charge execution function is present among the P-GW, and link to each other by network with the subordinate PCEF node that is present in other network element device that comprises another part strategy and charge execution function, it is characterized in that, the business of portable terminal is carried strategic decision-making and first policy charging rule of the control of chargeing when giving information when P-GW being used for of receiving that PCRF sends, obtain subordinate PCEF IP addresses of nodes, and this IP address packet is contained in the first policy charging rule response message sends to PCRF.
2. the strategy of cordless communication network as claimed in claim 1 and charge execution function node locating method is characterized in that, link to each other by the tunnel based on PMIP between described main PCEF node and subordinate PCEF node; The IP address that comprises described portable terminal during described first policy charging rule gives information; When described P-GW receives described first policy charging rule when giving information, according to the IP address lookup tunnel context of described portable terminal, only when having corresponding tunnel context, send the described first policy charging rule response message that comprises subordinate PCEF IP addresses of nodes.
3. the strategy of cordless communication network as claimed in claim 2 and charge execution function node locating method, it is characterized in that, after described PCRF receives the described first policy charging rule response message, be used for that to the transmission of this subordinate PCEF node the business of described portable terminal is carried strategic decision-making according to the subordinate PCEF IP addresses of nodes that comprises in this response message and give information with second policy charging rule of controlling that charges.
4. the strategy of cordless communication network as claimed in claim 1 and charge execution function node locating method is characterized in that, described subordinate PCEF node is present in the S-GW of 3GPP evolved packet system, or the non-3GPP gateway of trusted, or among the ePDG.
5. the strategy of cordless communication network as claimed in claim 3 and charge execution function node locating method is characterized in that, this method comprises following steps:
A: after described PCRF received the business demand of described portable terminal of the business network that is connected to described P-GW, first policy charging rule that is included as first control rule of policy billing that this business demand generates given information sent to this P-GW;
B: receive after this first policy charging rule gives information, the first policy charging rule response message that P-GW will comprise subordinate PCEF IP addresses of nodes sends to PCRF;
Second policy charging rule that C:PCRF will be included as second control rule of policy billing that this business demand generates gives information and sends to this subordinate PCEF node.
6. the strategy of cordless communication network as claimed in claim 5 and charge execution function node locating method, it is characterized in that, described portable terminal has been set up the default IP carrying of business network that P-GW connects, and described business demand is to set up the new business of described portable terminal at described business network; Also comprise following steps after the described step C:
D1: described subordinate PCEF node is set up new special I P carrying for this business or it is mapped in the existing IP carrying;
E1: this subordinate PCEF node sends the second policy charging rule response message to described PCRF.
7. the strategy of cordless communication network as claimed in claim 5 and charge execution function node locating method, it is characterized in that, described portable terminal has been set up default IP carrying and one or more special I P carrying of business network that P-GW connects, and described business demand is for revising the QoS of described portable terminal in the business of described business network; Also comprise following steps after the described step C:
D2: described subordinate PCEF node is searched the special I P carrying of this business correspondence according to the traffic filter template that comprises in described second control rule of policy billing, and revises the QoS of this special I P carrying;
E2: subordinate PCEF node sends the second policy charging rule response message to described PCRF.
8. the strategy of cordless communication network as claimed in claim 5 and charge execution function node locating method, it is characterized in that, described portable terminal has been set up default IP carrying and one or more special I P carrying of business network that P-GW connects, and described business demand is for discharging the business of described portable terminal at described business network; Also comprise following steps after the described step C:
D3: described subordinate PCEF node is searched the special I P carrying of this business correspondence according to the traffic filter template that comprises in described second control rule of policy billing;
E3:, then discharge this special I P carrying if this business is last business of this special I P carrying; Otherwise, should business from this special I P carrying, delete;
F3: subordinate PCEF node sends the second policy charging rule response message to described PCRF.
9. as the strategy and the charge execution function node locating method of claim 6,7 described cordless communication networks, it is characterized in that, comprise the QoS of described business or its corresponding IP carrying in the described second policy charging rule response message.
10. the strategy of cordless communication network as claimed in claim 2 and charge execution function node locating method, it is characterized in that, the ID that comprises described portable terminal during described first policy charging rule gives information, described P-GW is according to the IP address and the ID inquiry tunnel context of portable terminal; Described P-GW obtains described subordinate PCEF IP addresses of nodes from the tunnel context that inquiry obtains.
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