CN104639457A - Policy control method, policy control device and gateway equipment - Google Patents
Policy control method, policy control device and gateway equipment Download PDFInfo
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- CN104639457A CN104639457A CN201310558103.5A CN201310558103A CN104639457A CN 104639457 A CN104639457 A CN 104639457A CN 201310558103 A CN201310558103 A CN 201310558103A CN 104639457 A CN104639457 A CN 104639457A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/20—Traffic policing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/04—Registration at HLR or HSS [Home Subscriber Server]
Abstract
The invention discloses a policy control method. The policy control method includes receiving downlink packet filter adding requests of user equipment; setting downlink packet filters as bidirectional downlink packet filters in response to the requests; and/or generating the downlink packet filters and uplink packet filters symmetrical with the downlink packet filters. The bidirectional downlink packet filters are used for filtering downlink data and corresponding uplink data of the user equipment. The invention further discloses a policy control device and gateways.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of policy control method, device and gateway device.
Background technology
Fig. 1 is that the strategy that defines of third generation partner program (3rd Generation Partnership Project, be called for short 3GPP) and charging control (Policy and Charging Control is called for short PCC) framework.
"Policy and Charging Rules Function (Policy and Charging Rules Function, be called for short PCRF) uses Internet resources to carry out the formulation of service quality (Quality of Service is called for short QoS) and charging policy for business.PCRF formulates described control strategy to be needed to combine from application function (Application Function, be called for short AF) business information that receives, from user-subscribed database (Subscription Profile Repository, be called for short SPR) user signing contract information that receives, the strategy etc. of operator's configuration.The control strategy formulated for business is handed down to strategy and charge execution function (Policy and Charging Enforcement Function by PCRF, be called for short PCEF) or bearing binding and reporting events function (Bearer Binding and Event Report Function is called for short BBERF) perform.Simultaneously PCRF can subscribe to bearing bed dependent event to PCEF and/or BBERF, timely perception when there is described event with convenient bearing bed, and changes control strategy.In addition, PCEF and business measuring ability (Traffic Detection Function, being called for short TDF) the PCC rule (PCEF) that can issue according to PCRF or application and detection control (Application Detection and Control is called for short ADC) rule (TDF) perform and apply detection and control function.
PCC can support that multiple IP connects Access Network (IP Connectivity Access Network, be called for short IP-CAN), for example grouping system (the Evolved Packet System of evolution, be called for short EPS), GPRS (General Packet Radio System is called for short GPRS).Fig. 2 is the Organization Chart that PCC supports EPS IP-CAN, if S5 interface adopts proxy-mobile IP version 6(Proxy Mobile IP version6, is called for short PMIPv6), then gateway (Serving Gateway is called for short S-GW) supports BBERF function.Fig. 3 is the Organization Chart that PCC supports GPRS IP-CAN.
Ensure to realize QoS end to end, 3GPP network provides the QoS based on carrying granularity to ensure.The business being mapped to same carrying will be used identical bearing bed Packet forwarding process.Different bearing bed Packet forwarding process is if desired provided, then needs Business Stream to be mapped in different EPS carryings.A general carrying has a filter template associated (traffic flow template is called for short TFT).Uplink service flow template (UL TFT) is the uplink packet filter set in TFT.Downlink business flow template (DL TFT) is the downstream packets filter set in TFT.Each PDN has allowed a carrying not have TFT in connecting.For EPS IP-CAN, default bearing may not have TFT.
UE uses UL TFT the business of up direction to be mapped to an EPS carrying.PCEF(GTP-based S5/S8) or BBERF(PMIP-based S5/S8) use DL TFT down direction business to be mapped to an EPS carrying.Upstream data bag is mapped to different EPS carryings based on distributing the UL TFT being associated with carrying by such as UE.When user is mated, first compare the IP filter in the UL TFT of lowest priority, and when not finding coupling, continue the comparison of upstream data IP filter by increasing priority order.When finding coupling or all uplink packet filter all by after relatively, this process terminates.If the coupling of finding, upstream data bag is transmitted by the EPS carrying of the TFT association at the uplink packet filter place of coupling.If do not find coupling, upstream data bag sends by the EPS carrying by also not distributing uplink packet filter.If all EPS carryings (comprising the default EPS carrying that PDN is corresponding) have been assigned with one or more uplink packet filters, UE will abandon upstream data bag.
Carrying can be unidirectional, for descending unidirectional carrying, except the DL TFT that this carries an association, also needs a up filter and refuses all upstream datas, be matched in this descending unidirectional carrying to prevent UE upstream data.
But have two problems can cause that a PDN connection has more than one carrying not have up filter at present, and cause UE not know Data Matching is sent to which carrying is upper:
1) there is a carrying not having a TFT in connecting in PDN, and network is initiated to establish one and provided DL and the UL packet carrying of filter by network.UE initiates have the increase DL packet filter of the carrying of UL and DL TFT to operate to this, subsequent triggers is deleted network and is provided DL and UL packet filter, therefore only remain the DL packet filter that UE increases, two carryings now will be caused not have UL TFT.
2) all carryings have UL TFT, and UE attempts activation one subsequently and only has the carrying of DL TFT to set up.Network can be interpreted as match all UL data, and application one therefore can be gone to have the PCC rule of wildcard filter.Like this, if later, network deletes the UL TFT of certain carrying, and a carrying will be caused not have UL TFT, and a carrying has wildcard UL TFT, and same UE cannot determine how to match up in carrying.
Summary of the invention
The invention provides a kind of policy control method, device and gateway device, at least to solve as a packet data network (Packet Data Network, be called for short PDN) connect and have more than one carrying there is no up filter, and cause user equipment (UE) not known should Data Matching to the upper problem sent of which carrying.
According to an aspect of the present invention, provide a kind of policy control method, comprising: receive the request that subscriber equipment increases downlink grouped filter;
Response described request, is set to two-way by described downlink grouped filter; And/or generate described downlink grouped filter and the upstream packet filter with described downlink grouped filter symmetry; Wherein, described two-way for making the downlink data of subscriber equipment described in downlink grouped metre filter and corresponding upstream data.
In such scheme, described upstream data comprises: source address, destination address and described downlink data exchange, and the data that source port number, destination slogan and described downlink data exchange.
In such scheme, also comprise: when described downlink grouped filter is set to two-way, send to described subscriber equipment and be set to two-way described downlink grouped filter; Or when generating described downlink grouped filter and described upstream packet filter, send described upstream packet filter to described subscriber equipment.
In such scheme, when network support PCC, described downlink grouped filter is set to two-way comprising:
The second gateway that strategy and the first gateway of being positioned at of charge execution function PCEF or bearing binding and event reporting function BBERF are positioned at is to "Policy and Charging Rules Function PCRF transmission described request;
Described first gateway or described second gateway receive the response of described PCRF to described request;
Described downlink grouped filter is set to two-way according to the local policy of correspondence and/or described response by described first gateway or described second gateway.
In such scheme, described downlink grouped filter is set to two-way according to the local policy of correspondence and/or described response by described first gateway or described second gateway, comprising:
To carry described downlink grouped filter in described response be two-way instruction, described downlink grouped filter is set to two-way according to described instruction by described first gateway or described second gateway;
When not carrying described instruction in described response, it is two-way that described first gateway or described second gateway arrange described downlink grouped filter according to the local policy of correspondence.
In such scheme, when network does not support PCC, described downlink grouped filter is set to two-way according to local policy by described first gateway or described second gateway.
In such scheme, when network support PCC, generate described upstream packet filter and filter with the upstream packet of described downlink grouped filter symmetry and comprise:
The first gateway that PCEF is positioned at or the second gateway that BBERF is positioned at send described request to PCRF;
Described first gateway or described second gateway receive the response of described PCRF to described request, and wherein said respond packet contains the information of described downlink grouped filter and described upstream packet filter;
Described first gateway or described second gateway generate described downlink grouped filter and described upstream packet filter according to described information.
In such scheme, described first gateway receives the response of described PCRF to described request and comprises:
Described first gateway receives the PCC and the 2nd PCC rule that described PCRF formulates according to described request, wherein, comprises a SDF Template in a described PCC rule, and comprises described downlink grouped filter in a described SDF Template; Comprise the 2nd SDF Template in described 2nd PCC rule, and comprise described upstream packet filter in described 2nd SDF Template;
Described first gateway generates described downlink grouped filter according to described information and described upstream packet filter comprises: described first gateway, according to described PCC rule and a described 2nd PCC rule construct TFT, obtains the TFT comprising described downlink grouped filter and described upstream packet filter.
In such scheme, described second gateway receives the response of described PCRF to described request and comprises: described second gateway receive described PCRF according to described request formulate the one QoS rule and the 2nd QoS rule, wherein, wherein, comprise a SDF Template in a described QoS rule, and comprise described downlink grouped filter in a described SDF Template; Comprise the 2nd SDF Template in described 2nd QoS rule, and comprise described upstream packet filter in described 2nd SDF Template;
The upstream packet filter that described second gateway generates described downlink grouped filter and described symmetry according to described information comprises: described second gateway, according to described QoS rule and a described 2nd QoS rule construct TFT, obtains comprising described downlink grouped filter and described upstream packet filter.
In such scheme, when network does not support PCC, described first gateway or described second gateway generate described downlink grouped filter and described upstream packet filter according to local policy.
According to a further aspect in the invention, provide a kind of policy control device, comprising:
Receiver module, increases the request of downlink grouped filter for receiving subscriber equipment;
Module being set, for responding described request, described downlink grouped filter being set to two-way, wherein, described two-way for making the downlink data of subscriber equipment described in downlink grouped metre filter and corresponding upstream data; And/or
Generation module, for responding described request, generates described downlink grouped filter and the upstream packet filter with described downlink grouped filter symmetry.
In accordance with a further aspect of the present invention, provide a kind of gateway device, comprising: PCEF and aforementioned means.
According to another aspect of the invention, provide a kind of gateway device, comprise BBERF and aforementioned means.
By the present invention, solve UE correctly cannot send upstream data problem because not having correct up filter, and then reach and avoid because UE sends upstream data in the carrying of mistake by Network Packet Loss effect.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the PCC Organization Chart of prior art;
Fig. 2 is the Organization Chart that PCC supports EPS IP-CAN;
Fig. 3 is the Organization Chart that PCC supports GPRS IP-CAN;
Fig. 4 is the method flow diagram according to the embodiment of the present invention;
Fig. 5 is the method for optimizing flow chart according to the embodiment of the present invention;
Fig. 6 is the structural representation according to the embodiment of the present invention;
Fig. 7 is the preferred structure schematic diagram according to the embodiment of the present invention;
Fig. 8 is the method flow diagram of the embodiment of the present invention one;
Fig. 9 is the method flow diagram of the embodiment of the present invention two;
Figure 10 is the method flow diagram of the embodiment of the present invention three;
Figure 11 is the method flow diagram of the embodiment of the present invention four;
Figure 12 is the method flow diagram of the embodiment of the present invention five;
Figure 13 is the method flow diagram of the embodiment of the present invention six.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Embodiments provide a kind of policy control method, Fig. 4 is the method flow diagram according to the embodiment of the present invention, as shown in Figure 4, comprises following step:
Step S402. receives the request that subscriber equipment increases downlink grouped filter;
Step S404. responds described request, is set to two-way by described downlink grouped filter; And/or generate described downlink grouped filter and the upstream packet filter with described downlink grouped filter symmetry; Wherein, described two-way for making the downlink data of subscriber equipment described in downlink grouped metre filter and corresponding upstream data.
The method comprises as shown in Figure 5: step S502. receives the request that subscriber equipment increases downlink grouped filter;
Step S504. network side response described request; be two-way by the mandate of described downlink grouped filter; or generate symmetrical upstream packet filter, wherein two-wayly refer to that described packet filter allows the contrary and source port number of source address, destination-address, data that destination port numbers is contrary are passed through;
Step S506., when being set to two-way by described downlink grouped filter, sending to described subscriber equipment and is set to two-way described downlink grouped filter; Or when generating described downlink grouped filter and described upstream packet filter, send described upstream packet filter to described subscriber equipment.
The embodiment of the present invention also provides a kind of policy control device, and Fig. 6 is the apparatus structure schematic diagram according to the embodiment of the present invention, as shown in Figure 6, comprising: receiver module 602, increases the request of downlink grouped filter for receiving subscriber equipment; Module 604 being set, for responding described request, described downlink grouped filter being set to two-way, wherein, described two-way for making the downlink data of subscriber equipment described in downlink grouped metre filter and corresponding upstream data; And/or generation module, for responding described request, generate described downlink grouped filter and the upstream packet filter with described downlink grouped filter symmetry.
This device also comprises sending module 606 as shown in Figure 7, for when being set to two-way by described downlink grouped filter, sending be set to two-way described downlink grouped filter to described subscriber equipment; Or for when generating described downlink grouped filter and described upstream packet filter, send described upstream packet filter to described subscriber equipment.
According to the one side again of the embodiment of the present invention, provide a kind of gateway device, comprising: PCEF and aforementioned means.
According to the another aspect of the embodiment of the present invention, provide a kind of gateway device, comprise BBERF and aforementioned means.
In order to make technical scheme of the present invention and implementation method clearly, below in conjunction with preferred embodiment, its implementation procedure is described in detail.
It should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
Embodiment one:
The present embodiment describes IP-CAN when being GPRS, and user equipment (UE) initiates request increases downlink grouped filter Packet Filter, and respond this request, described downlink grouped filter is set to two-way flow process, and flow process is described below:
Step S801:UE is attached to network, initiate attachment flow, or UE initiates other PDN connection building process.IP-CAN session establishment, PCEF and PCRF sets up Gx session.
Step S802:UE is by radio network controller (Radio Network Controller, be called for short RNC), Serving GPRS Support Node (Serving GRPS Supporting Node, be called for short SGSN) etc. to gateway GPRS support node (Gateway GRPS Supporting Node, be called for short GGSN) send and activate time PDP Context request or upgrade PDP Context request message, carry newly-increased packet filter in message and ask.Specifically carry Traffic Flow Template in the message, wherein for activation time packet data protocol (Packet Data Protocol, be called for short PDP) context request message, command code in Traffic Flow Template is Create New TFT, and carries one or more packet filter Packet filter.For renewal PDP Context request message, command code in Traffic Flow Template is Create New TFT, Add packet filters to existing TFT or Replace Packet filters in existing TFT, and carries one or more Packet filter.The direction of above Packet Filter is all designated as descending.
Step S803: if GGSN receives activate time PDP Context request, the PCEF being positioned at GGSN sends Diameter CCR message to PCRF, and carrying PCEF in message is the newly assigned Bearer ID of this PDP Context and TFT packet filter information.All Packet filter that TFT packet filter information packets of information is carried containing activation time PDP Context request message.If GGSN receives upgrade PDP Context request message, the PCEF being positioned at GGSN sends Diameter CCR message to PCRF, be the Bearer ID of this PDP Context distribution and TFT packet filter information before carrying PCEF in message, wherein, the Packet filter of the TFT of TFT packet filter information this PDP Context that to be GGSN determine according to the Packet filter of the command code in message and renewal.
Step S804:PCRF preserves the information in Diameter CCR.If relevant the contracting of PCRF, PCRF may be mutual with SPR, obtains CAMEL-Subscription-Information.The network strategy of the information that PCRF reports according to CAMEL-Subscription-Information, PCEF and self configuration carries out strategic decision-making, formulates PCC rule.For the Packet Filter that UE request in the TFT Packet filter information information that PCEF reports is newly-increased, although these Packet Filter only have down direction, PCRF is by business datum flow template (Service Data Flow Template corresponding in the PCC rule formulated, SDF Template) direction be set to two-way, the concrete Flow-Direction AVP value of carrying in Flow-Information AVP is BIDIRECTIONAL.
Step S805:PCRF performs bearing binding, and the PCC of formulation rule associated with the Bearer ID that PCEF reports, namely PCC rule is tied to this carrying.
Step S806:PCRF returns Diameter CCA message to PCEF, carries Bearer ID, PCC rule and carry relevant QoS information in message.
SDF template in the PCC rule that step S807:PCEF returns according to PCRF constructs the TFT of this carrying, the newly-increased descending filter that wherein GGSN receives in S803, become two-way during filter due to the correspondence of SDF template, so corresponding filter is two-way in the TFT of PCEF structure.GGSN returns response message by SGSN, RNC, NB to UE, carries TFT, QoS that carrying is relevant.
Step S808:UE filters upstream data bag according to the TFT obtained, although in S803, the Packet Filter of UE request only has down direction, but in S807, Packet Filter in the TFT that network provides to UE is two-way, therefore, UE carries out after the match is successful according to this Packet Filter, and the transmission of upstream data bag is carried out in the carrying using this TFT to associate.
Step S809:GGSN sends upstream data according to TFT to UE and carries out carrying verification, and allows upstream data to pass through.
If corresponding Packet Filter is not two-way in the SDF template in the PCC rule that network does not support PCC or PCRF to return, so the Packet Filter corresponding according to local policy mandate one is two-way by GGSN, and sends to UE.
A so-called two-way Packet Filter i.e. filter itself is unidirectional, but (Swapped) data of (swapped) and the source port number that allow source address, destination-address to exchange, the exchange of destination port numbers are passed through.
Embodiment two:
The present embodiment describes IP-CAN when being GPRS, user equipment (UE) initiates request increases downlink grouped filter Packet Filter, respond this request, generate the flow process of described downlink grouped filter and the upstream packet filter with described downlink grouped filter symmetry, comprising:
Step S901-step S903 is identical with step S801-step S803;
Step S904:PCRF preserves the information in Diameter CCR.If relevant the contracting of PCRF, PCRF may be mutual with SPR, obtains CAMEL-Subscription-Information.The network strategy of the information that PCRF reports according to CAMEL-Subscription-Information, PCEF and self configuration carries out strategic decision-making, formulates PCC rule.The SDF template comprised in PCC rule (PCC rule 1) is set to the newly-increased Packet Filter of UE request by PCRF, and is set to down direction; Simultaneously, PCRF generates a PCC rule (PCC rule 2) in addition, Packet Filter and UE wherein asks the source address of newly-increased Packet Filter, destination-address exchanges and source port number, destination port numbers are exchanged, and this Packet Filter is set to up direction.
Step S905:PCRF performs bearing binding, and the PCC of formulation rule 1 associated with the Bearer ID that PCEF reports with PCC rule 2, namely PCC rule is tied to this carrying.
Step S906:PCRF returns Diameter CCA message to PCEF, carries the QoS information that Bearer ID, PCC rule 1 is relevant with PCC rule 2 and carrying in message.
Step S907: the PCEF being positioned at GGSN comprises two symmetrical Packet Filter according to PCC rule construct TFT, this TFT.GGSN returns response message by SGSN, RNC, NB to UE, carries TFT, QoS that carrying is relevant.Step S908:UE filters upstream data bag according to the TFT obtained, and therefore, UE carries out after the match is successful according to the up filter Packet Filter of symmetry, and the transmission of upstream data bag is carried out in the carrying using this TFT to associate.
Step S909:GGSN sends upstream data according to TFT to UE and carries out carrying verification, and allows upstream data to pass through.
Similarly, in embodiment one and embodiment two, if do not comprise in the PCC rule that network does not support PCC or PCRF to return source address, destination-address exchange and source port number, destination port numbers exchange packet filter PCC rule, so GGSN will formulate a symmetrical up unidirectional Packet Filter according to local policy, and construct TFT accordingly, wherein to comprising two symmetrical Packet Filter, send to UE.
In embodiment two, 2 the PCC rules comprising symmetrical up-downgoing packet filter are sent to UE in the lump by PCRF in response message.The PCC rule comprising descending unidirectional packet filter also can be sent to UE by PCRF in response message.Afterwards, handbag can also be sent to PCEF containing the PCC rule 2 after symmetrical up unidirectional packet filter by Diameter RAR message by PCRF, and the TFT after up unidirectional packet filter symmetrical for interpolation is sent to UE by upgrading PDP Context request message by GGSN afterwards.
In embodiment one and embodiment two, the TFT comprising symmetrical up-downgoing packet filter is sent to UE in the lump by GGSN in response message.The TFT comprising descending unidirectional packet filter also can be sent to UE by GGSN in response message.Afterwards, the TFT after up unidirectional packet filter symmetrical for interpolation can also be sent to UE by upgrading PDP Context request message by GGSN.
Above, network is generated to the method for a corresponding up single file Packet Filter, if UE request increase before deleting descending unidirectional packet filter time, up unidirectional Packet Filter is also deleted together by network.
Embodiment three
It is that EPS, UE initiate the descending Packet Filte of request increase that the present embodiment describes IP-CAN, and described downlink grouped filter is set to two-way flow process, and flow process is described below:
Step S1001:UE is attached to network, initiate attachment flow, or UE initiates other PDN connection building process.IP-CAN session establishment, PCEF and PCRF sets up Gx session.
Step S1002:UE sends request bearing resource amendment message by eNodeB, MME, S-GW etc. to P-GW, carries newly-increased packet filter and ask in message.Specifically carry Traffic Aggregate Description in the message, command code is Create New TFT, Add packet filters to existing TFT or Replace Packet filters in existing TFT, and carries one or more Packet filter.The direction of above Packet Filter is all designated as descending.
Step S1003: the PCEF being positioned at P-GW sends Diameter CCR message to PCRF, carry Packet-Filter-Information, wherein comprise the Packet-Filter-Content AVP request of carrying and newly increase Packet Filter, Flow-Direction AVP is set to Downlink.In addition, if command code is Create New TFT, the Packet-Filter-Operation AVP in CCR message is set to " ADDITION ", if Add packet filters to existing is TFT, then Packet-Filter-Operation AVP is set to " ADDITION ", and additionally carry Packet-Filter-Information, comprising the Packet-Filter-Identifier that the Packet filter that will be added into is corresponding, if command code is Replace Packet filters in existing TFT, then Packet-Filter-Operation AVP is set to " MODIFICATION ", and additionally carry Packet-Filter-Information, comprising wanting the Packet-Filter-Identifier that Packet filter is corresponding.
Step S1004:PCRF preserves the information in Diameter CCR.If relevant the contracting of PCRF, PCRF may be mutual with SPR, obtains CAMEL-Subscription-Information.The network strategy of the information that PCRF reports according to CAMEL-Subscription-Information, PCEF and self configuration carries out strategic decision-making, formulates PCC rule.For the Packet Filter that UE request in the information that PCEF reports is newly-increased, although these Packet Filter only have down direction, business datum flow template (the Service Data Flow Template that PCRF is corresponding in the PCC rule formulated, SDF Template) direction be two-way, the concrete Flow-Direction AVP value of carrying in Flow-Information AVP is BIDIRECTIONAL.
Step S1005:PCRF returns Diameter CCA message to PCEF, carries the PCC rule of formulation in message;
Step S1006:PCEF performs bearing binding according to the QCI/ARP carried in PCC rule.SDF Template in PCC rule is added in the TFT of corresponding carrying by PCEF.The newly-increased Packet Filter of the request that wherein P-GW receives in 1003 steps is descending, becomes two-way, so corresponding Packet Filter is also two-way in the TFT of PCEF structure during Packet Filter due to the correspondence of SDF template.
Step S1007:P-GW returns response message by S-GW, MME, eNB to UE, carries TFT, QoS that carrying is relevant.
Step S908:UE filters upstream data bag according to the TFT obtained, although in S1003, the Packet Filter of UE request only has down direction, but in S1007, Packet Filter in the TFT that network provides to UE is two-way, therefore UE carries out after the match is successful according to this Packet Filter, and the transmission of upstream data bag is carried out in the carrying using this TFT to associate.
Step S1009:GGSN sends upstream data according to TFT to UE and carries out carrying verification, and allows upstream data to pass through.If corresponding Packet Filter is not two-way in the SDF template in the PCC rule that network does not support PCC or PCRF to return, so the Packet Filter corresponding according to local policy mandate one is two-way by P-GW, and sends to UE.
Wherein, two-way packet filter Packet Filter and filter itself are unidirectional, but allow source address, destination-address exchange and source port number, destination port numbers exchange data pass through.
Embodiment four
It is EPS that the present embodiment describes IP-CAN, user equipment (UE) initiates request increases downlink grouped filter Packet Filter, respond this request, generate the flow process of described downlink grouped filter and the upstream packet filter with described downlink grouped filter symmetry, comprising:
Step S1101-step S1103 is identical with step S1001-step S1003;
Step S1104:PCRF preserves the information in Diameter CCR.If relevant the contracting of PCRF, PCRF may be mutual with SPR, obtains CAMEL-Subscription-Information.The network strategy of the information that PCRF reports according to CAMEL-Subscription-Information, PCEF and self configuration carries out strategic decision-making, formulates PCC rule.The SDF template comprised in PCC rule (PCC rule 1) is set to the newly-increased Packet Filter of UE request by PCRF, and is set to down direction; Simultaneously, PCRF generates a PCC rule (PCC rule 2) in addition, Packet Filter and UE wherein asks the source address of newly-increased Packet Filter, destination-address exchanges and source port number, destination port numbers exchange, and this Packet Filter is set to up direction.
Two PCC rules are all sent to PCEF by step S1105:PCRF.
Step S1106:PCEF performs bearing binding according to the QCI/ARP carried in PCC rule 1 and PCC rule 2.P-GW according to PCC rule construct TFT, this TFT to comprising two symmetrical Packet Filter.
Step S1107:P-GW returns response message by S-GW, MME, eNB to UE, carries TFT, QoS that carrying is relevant.
Step S1108:UE filters upstream data bag according to the TFT obtained, and therefore, UE carries out after the match is successful according to the up filter Packet Filter of symmetry, and the transmission of upstream data bag is carried out in the carrying using this TFT to associate.
Step S1109:GGSN sends upstream data according to TFT to UE and carries out carrying verification, and allows upstream data to pass through.
Similarly, in embodiment three and embodiment four, if do not comprise in the PCC rule that network does not support PCC or PCRF to return source address, destination-address exchange and source port number, destination port numbers exchange packet filter PCC rule, so P-GW will formulate a symmetrical up unidirectional Packet Filter according to local policy, and construct TFT accordingly, wherein to comprising two symmetrical Packet Filter, send to UE.
In embodiment four, 2 the PCC rules comprising symmetrical up-downgoing packet filter are sent to UE in the lump by PCRF in response message.The PCC rule comprising descending unidirectional packet filter also can be sent to UE by PCRF in response message.Afterwards, handbag can also be sent to PCEF containing the PCC rule 2 after symmetrical up unidirectional packet filter by Diameter RAR message by PCRF, and the TFT after up unidirectional packet filter symmetrical for interpolation is sent to UE by upgrading bearing request message by P-GW afterwards.
In embodiment three and embodiment four, the TFT comprising symmetrical up-downgoing packet filter is sent to UE in the lump by P-GW in response message.The TFT comprising descending unidirectional packet filter also can be sent to UE by P-GW in response message.Afterwards, the TFT after up unidirectional packet filter symmetrical for interpolation can also be sent to UE by bearer update request message by P-GW.
In above embodiment three and embodiment four, for the method for up single file Packet Filter corresponding to network formulates one, if during the descending unidirectional packet filter that UE request increases before deleting, up unidirectional Packet Filter is also deleted together by network.
Embodiment five
It is EPS that the present embodiment describes IP-CAN, and under there is BBERF scene, UE initiates request increases descending Packet Filter, and described downlink grouped filter is set to two-way flow process, and flow process is described below:
Step S1201:UE is attached to network, initiate attachment flow, or UE initiates other PDN connection building process.IP-CAN session establishment, PCEF and PCRF sets up Gx session, and BBERF and PCRF sets up gateway control session.
Step S1202:UE by eNodeB, MME, etc. to S-GW send request bearing resource amendment message, carry newly-increased packet filter in message and ask.Specifically carry Traffic Aggregate Description in the message, command code is Create New TFT, Add packet filters to existing TFT or Replace Packet filters in existing TFT, and carries one or more Packet filter.The direction of above Packet Filter is all designated as descending.
Step S1203: the BBERF being positioned at S-GW sends Diameter CCR message to PCRF, carry Packet-Filter-Information, wherein comprise the Packet-Filter-Content AVP request of carrying and newly increase Packet Filter, Flow-Direction AVP is set to Downlink.In addition, if command code is Create New TFT, the Packet-Filter-Operation AVP in CCR message is set to " ADDITION ", if Add packet filters to existing is TFT, then Packet-Filter-Operation AVP is set to " ADDITION ", and additionally carry Packet-Filter-Information, comprising the Packet-Filter-Identifier that the Packet filter that will be added into is corresponding, if command code is Replace Packet filters in existing TFT, then Packet-Filter-Operation AVP is set to " MODIFICATION ", and additionally carry Packet-Filter-Information, comprising wanting the Packet-Filter-Identifier that Packet filter is corresponding.
Step S1204:PCRF preserves the information in Diameter CCR.If relevant the contracting of PCRF, PCRF may be mutual with SPR, obtains CAMEL-Subscription-Information.The network strategy of the information that PCRF reports according to CAMEL-Subscription-Information, PCEF and self configuration carries out strategic decision-making, formulates PCC rule and corresponding QoS rule.For the Packet Filter that UE request in the information that PCEF reports is newly-increased, although these Packet Filter only have down direction, business datum flow template (the Service Data Flow Template that PCRF is corresponding in the PCC rule/QoS rule formulated, SDF Template) direction be two-way, the concrete Flow-Direction AVP value of carrying in Flow-Information AVP is BIDIRECTIONAL.
Step S1205:PCRF returns Diameter CCA message to BBERF, carries the QoS rule of formulation in message.
Step S1206:BBERF performs bearing binding according to the QCI/ARP carried in QoS rule.SDF Template in QoS rule is added in the TFT of corresponding carrying by BBERF.Wherein, the Packet Filter that the request that S-GW receives in S1203 increases newly is descending, because the Packet Filter of the correspondence of SDF template becomes two-way, so corresponding Packet Filter is also two-way in the TFT of BBERF structure.
Step S1207:S-GW returns response message by MME, eNB to UE, carries TFT, QoS that carrying is relevant.
Step S1208:PCRF sends PCC rule to PCEF.
Step S1209:PCEF returns acknowledge message to PCRF.
Step S1210:UE filters upstream data bag according to the TFT obtained, although in S1203, the Packet Filter of UE request only has down direction, but in step 1207, Packet Filter in the TFT that network provides to UE is two-way, therefore UE carries out after the match is successful according to this Packet Filter, and the transmission of upstream data bag is carried out in the carrying using this TFT to associate.
Step S1211:S-GW sends upstream data according to TFT to UE and carries out carrying verification, and allows upstream data to pass through.
If corresponding Packet Filter is not two-way in the SDF template in the PCC rule that network does not support PCC or PCRF to return, so the Packet Filter corresponding according to local policy mandate one is two-way by S-GW, and sends to UE.
A so-called two-way Packet Filter i.e. filter itself is unidirectional, but the data allowing source address, the anticommuting of destination-address phase and source port number, destination port numbers to exchange are passed through.
Embodiment six
It is EPS that the present embodiment describes IP-CAN, user equipment (UE) initiates request increases downlink grouped filter Packet Filter, respond this request, generate the flow process of described downlink grouped filter and the upstream packet filter with described downlink grouped filter symmetry, comprising:
Step S1301-step S1303 is identical with step S1201-step S1203;
Step S1304:PCRF preserves the information in Diameter CCR.If relevant the contracting of PCRF, PCRF may be mutual with SPR, obtains CAMEL-Subscription-Information.The network strategy of the information that PCRF reports according to CAMEL-Subscription-Information, PCEF and self configuration carries out strategic decision-making, formulates PCC rule.The SDF template comprised in PCC/QoS rule (PCC rule 1/PCC rule 2) is set to the newly-increased Packet Filter of UE request by PCRF, and is set to down direction; Simultaneously, PCRF generates a PCC/QoS rule (PCC rule 2/QoS rule 2) in addition, Packet Filter and UE wherein asks the source address of newly-increased Packet Filter, destination-address exchanges and source port number, destination port numbers exchange, and this Packet Filter is set to up direction.
Step S1305:PCRF returns Diameter CCA message to BBERF, carries QoS rule 1 and the QoS rule 2 of formulation in message.
Step S1306:BBERF performs bearing binding according to the QCI/ARP carried in QoS rule.S-GW according to QoS rule construct TFT, this TFT to comprising two symmetrical Packet Filter.Step S1307:S-GW returns response message by MME, eNB to UE, carries TFT, QoS that carrying is relevant.
Step S1308:PCRF sends PCC rule 1 and PCC rule 2 to PCEF.
Step S1309:PCEF returns acknowledge message to PCRF.
Step S1310:UE filters upstream data bag according to the TFT obtained, and UE carries out after the match is successful according to the up filter Packet Filter of symmetry, and the transmission of upstream data bag is carried out in the carrying using this TFT to associate.
Step S1311:S-GW sends upstream data according to TFT to UE and carries out carrying verification, and allows upstream data to pass through.
Similarly, in embodiment five and embodiment six, if do not comprise in the PCC/Qos rule that network does not support PCC or PCRF to return source address, destination-address exchange and source port number, destination port numbers exchange packet filter PCC/QoS rule, so QoS will formulate a symmetrical up unidirectional Packet Filter according to local policy, and construct TFT accordingly, wherein to comprising two symmetrical Packet Filter, send to UE.
In embodiment six, 2 the QoS rules comprising symmetrical up-downgoing packet filter are sent to UE in the lump by PCRF in response message.The QoS rule comprising descending unidirectional packet filter also can be sent to UE by PCRF in response message.Afterwards, handbag can also be sent to PCEF containing the QoS rule 2 after symmetrical up unidirectional packet filter by Diameter RAR message by PCRF, and the TFT after the up unidirectional packet filter adding symmetry is sent to UE by more row bearing request message by S-GW afterwards.
In above embodiment five and embodiment six, the TFT comprising symmetrical up-downgoing packet filter is sent to UE in the lump by S-GW in response message.The TFT comprising descending unidirectional packet filter also can be sent to UE by S-GW in response message.Afterwards, the TFT after up unidirectional packet filter symmetrical for interpolation can also be sent to UE by bearer update request message by S-GW.
Above, for the method for up single file Packet Filter corresponding to network formulates one, if UE request increase before deleting descending unidirectional packet filter time, up unidirectional Packet Filter is also deleted together by network.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (28)
1. a policy control method, is characterized in that, described method comprises:
Receive the request that subscriber equipment increases downlink grouped filter;
Response described request, is set to two-way by described downlink grouped filter; And/or generate described downlink grouped filter and the upstream packet filter with described downlink grouped filter symmetry; Wherein, described two-way for making the downlink data of subscriber equipment described in downlink grouped metre filter and corresponding upstream data.
2. method according to claim 1, is characterized in that, described upstream data comprises: source address, destination address and described downlink data exchange, and the data that source port number, destination slogan and described downlink data exchange.
3. method according to claim 1 and 2, is characterized in that, described method also comprises:
When described downlink grouped filter is set to two-way, sends to described subscriber equipment and be set to two-way described downlink grouped filter; Or
When generating described downlink grouped filter and described upstream packet filter, send described upstream packet filter to described subscriber equipment.
4. method according to claim 1, is characterized in that, when network support PCC, described downlink grouped filter is set to two-way comprising:
The second gateway that strategy and the first gateway of being positioned at of charge execution function PCEF or bearing binding and event reporting function BBERF are positioned at is to "Policy and Charging Rules Function PCRF transmission described request;
Described first gateway or described second gateway receive the response of described PCRF to described request;
Described downlink grouped filter is set to two-way according to the local policy of correspondence and/or described response by described first gateway or described second gateway.
5. method according to claim 4, is characterized in that, described downlink grouped filter is set to two-way according to the local policy of correspondence and/or described response by described first gateway or described second gateway, comprising:
To carry described downlink grouped filter in described response be two-way instruction, described downlink grouped filter is set to two-way according to described instruction by described first gateway or described second gateway;
When not carrying described instruction in described response, it is two-way that described first gateway or described second gateway arrange described downlink grouped filter according to the local policy of correspondence.
6. method according to claim 5, is characterized in that, described method also comprises: when not carrying described instruction in described response,
Described first gateway or described second gateway judge the information whether carrying described upstream packet filter in described response;
If not, described first gateway or described second gateway arrange described downlink grouped filter according to the local policy of correspondence is two-way.
7. the method according to any one of claim 4 to 6, is characterized in that, described downlink grouped filter is set to two-way comprising according to described instruction by described first gateway:
Described first gateway receives described strategy and charging control PCC rule, wherein, be provided with corresponding business datum flow template SDF Template, and the direction of described SDF Template is two-way in described PCC rule;
Described first gateway constructs traffic flow template TFT according to the SDF template in described PCC or QoS rule, and obtaining comprising packet filter is two-way TFT.
8. the method according to any one of claim 4 to 6, is characterized in that, described downlink grouped filter is set to two-way comprising according to described instruction by described second gateway:
Described second gateway receives the service quality QoS rule that described PCRF formulates, and wherein, be provided with corresponding business datum flow template SDF Template, and the direction of described SDF Template is two-way in described QoS rule;
Described second gateway constructs described TFT according to the SDF template in described QoS rule, and obtaining comprising packet filter is two-way TFT.
9. method according to claim 4, is characterized in that, also comprises:
When network does not support PCC, described downlink grouped filter is set to two-way according to local policy by described first gateway or described second gateway.
10. method according to claim 1, is characterized in that, when network support PCC, generates described downlink grouped filter and filters with the upstream packet of described downlink grouped filter symmetry and comprise:
The first gateway that PCEF is positioned at or the second gateway that BBERF is positioned at send described request to PCRF;
Described first gateway or described second gateway receive the response of described PCRF to described request, and wherein said respond packet contains the information of described downlink grouped filter and described upstream packet filter;
Described first gateway or described second gateway generate described downlink grouped filter and described upstream packet filter according to described information.
11. methods according to claim 10, is characterized in that, described first gateway receives the response of described PCRF to described request and comprises:
Described first gateway receives the PCC and the 2nd PCC rule that described PCRF formulates according to described request, wherein, comprises a SDF Template in a described PCC rule, and comprises described downlink grouped filter in a described SDF Template; Comprise the 2nd SDF Template in described 2nd PCC rule, and comprise described upstream packet filter in described 2nd SDF Template;
Described first gateway generates described downlink grouped filter according to described information and described upstream packet filter comprises: described first gateway, according to described PCC rule and a described 2nd PCC rule construct TFT, obtains the TFT comprising described downlink grouped filter and described upstream packet filter.
12. methods according to claim 10, is characterized in that, described second gateway receives the response of described PCRF to described request and comprises:
Described second gateway receive described PCRF according to described request formulate the one QoS rule and the 2nd QoS rule, wherein, comprise a SDF Template in a described QoS rule, and comprise described downlink grouped filter in a described SDF Template; Comprise the 2nd SDF Template in described 2nd QoS rule, and comprise described upstream packet filter in described 2nd SDF Template;
The upstream packet filter that described second gateway generates described downlink grouped filter and described symmetry according to described information comprises: described second gateway, according to described QoS rule and a described 2nd QoS rule construct TFT, obtains comprising described downlink grouped filter and described upstream packet filter.
13., according to claim 10 to the method according to any one of 12, is characterized in that, described method also comprises:
When network does not support PCC, described first gateway or described second gateway generate described downlink grouped filter and described upstream packet filter according to local policy.
14. 1 kinds of policy control devices, is characterized in that, described device comprises:
Receiver module, increases the request of downlink grouped filter for receiving subscriber equipment;
Module being set, for responding described request, described downlink grouped filter being set to two-way, wherein, described two-way for making the downlink data of subscriber equipment described in downlink grouped metre filter and corresponding upstream data; And/or
Generation module, for responding described request, generates described downlink grouped filter and the upstream packet filter with described downlink grouped filter symmetry.
15. devices according to claim 14, is characterized in that, described upstream data comprises: source address, destination address and described downlink data exchange, and the data that source port number, destination slogan and described downlink data exchange.
16. devices according to claims 14 or 15, it is characterized in that, described device also comprises: sending module, for when being set to two-way by described downlink grouped filter, sending be set to two-way described downlink grouped filter to described subscriber equipment; Or
For when generating described downlink grouped filter and described upstream packet filter, send described upstream packet filter to described subscriber equipment.
17. devices according to claim 14, is characterized in that, when network support PCC, the described module that arranges comprises:
Transmitting element, for sending described request to "Policy and Charging Rules Function PCRF;
Receiving element, for receiving the response of described PCRF to described request;
Setting unit, for being set to two-way according to the local policy of correspondence and/or described response by described downlink grouped filter.
18. devices according to claim 17, is characterized in that, described setting unit,
When being two-way instruction for carrying described downlink grouped filter in described response, according to described instruction, described downlink grouped filter is set to two-way; And when not carrying described instruction in described response, it is two-way for arranging described downlink grouped filter according to the local policy of correspondence.
19. devices according to claim 18, is characterized in that,
Described setting unit also comprises: judging unit, for not carrying described instruction in described response, judges the information whether carrying described upstream packet filter in described response;
Described setting unit, also for when not having the information of described upstream packet filter, it is two-way for arranging described downlink grouped filter according to the local policy of correspondence.
20., according to claim 17 to the device described in 19 any one, is characterized in that,
Described receiving element, for receiving described strategy and charging control PCC rule, wherein, be provided with corresponding business datum flow template SDF Template, and the direction of described SDF Template is two-way in described PCC rule;
Described setting unit, for constructing traffic flow template TFT according to the SDF template in described PCC or QoS rule, obtaining comprising packet filter is two-way TFT.
21., according to claim 17 to the device described in 19 any one, is characterized in that,
Described receiving element, for receiving the service quality QoS rule that described PCRF formulates, wherein, be provided with corresponding business datum flow template SDF Template, and the direction of described SDF Template is two-way in described QoS rule;
Described setting unit, for constructing described TFT according to the SDF template in described QoS rule, obtaining comprising packet filter is two-way TFT.
22. devices according to claim 17, is characterized in that, describedly arrange module, also for when network does not support PCC, are set to two-way according to local policy by described downlink grouped filter.
23. devices according to claim 14, is characterized in that, when network support PCC, described generation module comprises:
Transmitting element, for sending described request to PCRF;
Receiving element, for receiving the response of described PCRF to described request, wherein said respond packet contains the information of described downlink grouped filter and described upstream packet filter;
Generation unit, for generating described downlink grouped filter and described upstream packet filter according to described information.
24. devices according to claim 23, is characterized in that,
Described receiving element, for the PCC that formulates according to described request and the 2nd PCC rule, wherein, comprises a SDF Template in a described PCC rule, and comprises described downlink grouped filter in a described SDF Template; Comprise the 2nd SDF Template in described 2nd PCC rule, and comprise described upstream packet filter in described 2nd SDF Template;
Described generation unit, for generating described downlink grouped filter according to described information and described upstream packet filter comprises: described first gateway, according to described PCC rule and a described 2nd PCC rule construct TFT, obtains the TFT comprising described downlink grouped filter and described upstream packet filter.
25. devices according to claim 23, is characterized in that,
Described receiving element, for receive described PCRF according to described request formulate the one QoS rule and the 2nd QoS rule, wherein, in a described QoS rule, comprise a SDF Template, and comprise described downlink grouped filter in a described SDF Template; Comprise the 2nd SDF Template in described 2nd QoS rule, and comprise described upstream packet filter in described 2nd SDF Template;
Described generation unit, for according to described QoS rule and a described 2nd QoS rule construct TFT, obtains comprising described downlink grouped filter and described upstream packet filter.
26. devices according to any one of claim 23 to 25, is characterized in that, described generation module, also for when network does not support PCC, generate described downlink grouped filter and described upstream packet filter according to local policy.
27. 1 kinds of gateway devices, comprise strategy and charge execution function PCEF, it is characterized in that, described gateway device also comprises the device according to any one of claim 14 to 22.
28. 1 kinds of gateway devices, comprise bearing binding and reporting events function BBERF, it is characterized in that, described gateway device also comprises the device according to any one of claim 14,23 to 26.
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