WO2014183716A1 - 一种策略控制方法及装置、网关设备、存储介质 - Google Patents

一种策略控制方法及装置、网关设备、存储介质 Download PDF

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Publication number
WO2014183716A1
WO2014183716A1 PCT/CN2014/079195 CN2014079195W WO2014183716A1 WO 2014183716 A1 WO2014183716 A1 WO 2014183716A1 CN 2014079195 W CN2014079195 W CN 2014079195W WO 2014183716 A1 WO2014183716 A1 WO 2014183716A1
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WIPO (PCT)
Prior art keywords
packet filter
gateway
downlink packet
bidirectional
filter
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PCT/CN2014/079195
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English (en)
French (fr)
Inventor
周晓云
梁爽
卢飞
Original Assignee
中兴通讯股份有限公司
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Publication of WO2014183716A1 publication Critical patent/WO2014183716A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/20Traffic policing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing 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
    • H04W8/04Registration at HLR or HSS [Home Subscriber Server]

Definitions

  • the present invention relates to the field of communications, and in particular to a policy control method and apparatus, a gateway device, and a storage medium. Background technique
  • FIG 1 shows the Policy and Charging Control (PCC) architecture defined by the 3rd Generation Partnership Project (3GPP).
  • PCC Policy and Charging Control
  • PC F Policy and Charging Rules Function
  • the PCRF needs to combine the service information received from the Application Function (AF), the user subscription information received from the Subscriber Profile Repository (SPR), the policy configured by the operator, and the like.
  • the PCRF 101 sends the control policy formulated for the service to the Policy and Charging Enforcement Function (PCEF) or Bearer Binding and Event Report Function (BBE F).
  • PCEF Policy and Charging Enforcement Function
  • BBE F Bearer Binding and Event Report Function
  • the PCRF 101 can subscribe to the bearer layer related events to the PCEF 104 and/or the BBERF 105 to be aware of the event when the bearer layer occurs, and to change the control strategy.
  • the PCEF 104 and the Traffic Detection Function (TPF) can perform application detection and control according to the PCC rule (PCEF) or the Application and Detection Control (ADC) rule (TDF) delivered by the PCRF 101.
  • PCEF Policy and Charging Rules Function
  • ADC Application and Detection Control
  • the PCC can support a variety of IP Connectivity Access Network (IP-CAN), such as Evolved Packet System (EPS), General Packet Radio System (GPRS).
  • IP-CAN IP Connectivity Access Network
  • EPS Evolved Packet System
  • GPRS General Packet Radio System
  • Figure 2 shows PCC support EPS
  • Figure 3 shows the architecture of the PCC supporting GPRS IP-CAN.
  • the 3GPP network provides QoS guarantees based on bearer granularity. Services that are mapped to the same bearer will be forwarded using the same bearer layer packet. If different bearer layer packet forwarding processing is required, the service flow needs to be mapped to different EPS bearers.
  • a bearer has an associated traffic flow template (TFT).
  • TFT traffic flow template
  • the uplink traffic flow template (UL TFT) is a set of uplink packet filters in the TFT.
  • Downlink traffic flow template (DL TFT) A set of downlink packet filters in the TFT.
  • PDN Packet Data Network
  • the default bearer may not have a TFT.
  • the User Equipment uses the UL TFT to map the uplink traffic to the DL TFT to map the downlink traffic to an EPS bearer. For example, the UE maps the upstream data packets to different EPS bearers based on the UL TFTs assigned to the bearers.
  • the packet filters in the lowest priority UL TFT are compared first, and when no match is found, the comparison of the upstream packet filters is continued by increasing the priority order. This process ends when a match is found or all of the upstream packet filters have been compared. If a match is found, the upstream packet is transmitted through the EPS bearer associated with the TFT of the matching upstream packet filter.
  • the upstream packet will be sent over the EPS bearer that has not yet assigned the upstream packet filter. If all EPS bearers (including the default EPS bearers corresponding to the PDN) have been assigned one or more upstream packet filters, the UE will abandon the upstream packets.
  • the bearer may be unidirectional.
  • an uplink filter is required to reject all uplink data to prevent the UE from uplinking.
  • the data is matched to the downstream unidirectional bearer.
  • the network initiates the establishment of a bearer that provides DL and UL packet filters by the network.
  • the UE initiates an DL packet filter operation on the bearer of the UL and DL TFTs, and subsequently triggers the deletion of the network to provide the DL and UL packet filters, so that only the DL packet filter added by the UE is left, and thus the two bearers have no UL. TFT.
  • the embodiment of the present invention provides a policy control method and apparatus, a gateway device, and a storage medium, to at least solve the problem that when there is more than one bearer on one PDN connection, there is no uplink filter, and the user equipment UE does not know that the data should be matched. Which host is sending the problem.
  • a policy control method including: receiving a request for a user equipment to add a downlink packet filter;
  • the uplink data includes: a source address, a destination address, and the downlink data are exchanged, and the source port number, the destination port number, and the downlink data are exchanged.
  • the method further includes: sending, in the case of setting the downlink packet filter to be bidirectional, the downlink packet filter set to be bidirectional to the user equipment; or generating the downlink packet filtering In the case of the uplink packet filter, the uplink packet filter is sent to the user equipment.
  • the setting the downlink packet filter to be bidirectional includes:
  • the second gateway where the policy and charging enforcement function PCEF is located or the second gateway where the bearer binding and event reporting function BBERF is located sends the request to the policy and charging rule function PCRF; the first gateway or the second gateway Receiving, by the PCRF, a response to the request; the first gateway or the second gateway setting the downlink packet filter to be bidirectional according to a corresponding local policy and/or the response.
  • the first gateway or the second gateway sets the downlink packet filter to be bidirectional according to the corresponding local policy and/or the response, including:
  • the first gateway or the second gateway sets the downlink packet filter to be bidirectional according to the indication
  • the first gateway or the second gateway sets the downlink packet filter to be bidirectional according to a corresponding local policy.
  • the method further includes: when the indication does not carry the indication, the first gateway or the second gateway determines whether the response carries the information of the uplink packet filter ;
  • the first gateway or the second gateway sets the downlink packet filter to be bidirectional according to a corresponding local policy.
  • the first gateway sets the downlink packet filter to be bidirectional according to the indication, and includes:
  • the first gateway receives the policy and the charging control PCC rule, where the corresponding service data flow template SDF Template is set in the PCC rule, and the direction of the SDF template is bidirectional;
  • the first gateway constructs a service flow template TFT according to the SDF template in the PCC or QoS rule, and obtains a TFT that includes a packet filter as a bidirectional.
  • the second gateway sets the downlink packet filter to be bidirectional according to the indication, and includes:
  • the second gateway receives the QoS rule defined by the PCRF, where the QoS rule is configured with a corresponding service data flow template SDF Template, and the direction of the SDF template is bidirectional;
  • the second gateway constructs the TFT according to the SDF template in the QoS rule, and obtains a TFT that includes a packet filter as a bidirectional.
  • the method further includes: if the network does not support the PCC, the first gateway or the second gateway sets the downlink packet filter to be bidirectional according to a local policy.
  • the generating the uplink packet filter and the first gateway where the PCEF is located or the second gateway where the BBERF is located sends the request to the PCRF;
  • the first gateway or the second gateway generates the downlink packet filter and the uplink packet filter according to the information.
  • the receiving, by the first gateway, the response of the PCRF to the request includes: the first gateway receiving a first PCC and a second PCC rule that are determined by the PCRF according to the request;
  • the first SDF template includes the first SDF template, and the first SDF template includes the downlink packet filter;
  • the second PCC rule includes a second SDF template, and the second SDF
  • the template includes the uplink packet filter;
  • the first gateway generates the downlink packet filter and the uplink packet filter according to the information, where: the first gateway constructs a TFT according to the first PCC rule and the second PCC rule And obtaining a TFT including the downlink packet filter and the uplink packet filter.
  • the receiving, by the second gateway, the response of the PCRF to the request includes: the second gateway receiving a first QoS rule and a second QoS rule that are determined by the PCRF according to the request;
  • the first QoS rule includes a first SDF template, and the first SDF Template includes the downlink packet filter;
  • the second QoS rule includes a second SDF template, and the second SDF
  • the template includes the uplink packet filter;
  • the generating, by the second gateway, the downlink packet filter and the symmetric uplink packet filter according to the information includes: the second gateway constructing according to the first QoS rule and the second QoS rule The TFT obtains the downlink packet filter and the uplink packet filter.
  • the method further includes: if the network does not support the PCC, the first gateway or the second gateway generates the downlink packet filter and the uplink packet filter according to a local policy.
  • a policy control apparatus including a receiving module, a setting module, and a generating module, where:
  • the receiving module is configured to receive a request for the user equipment to add a downlink packet filter; the setting module is configured to: in response to the request, set the downlink packet filter to be bidirectional; And corresponding upstream data; and/or,
  • the generating module is configured to generate the downlink packet filter and the third aspect according to an embodiment of the present invention in response to the request, and provide a gateway device, where the gateway device includes: a PCEF and the foregoing device.
  • a gateway device comprising a BBERF and the foregoing device.
  • a computer readable storage medium in which computer executable instructions are stored, the computer executable instructions being used to execute the policy control method described above.
  • the policy control method and device, the gateway device, and the storage medium provided by the foregoing embodiment of the present invention first receive a request for the user equipment to add a downlink packet filter; and in response to the request, set the downlink packet filter to be bidirectional; and Or generating the downlink packet filter and an uplink packet filter that is symmetric with the downlink packet filter. In this manner, the problem that the UE cannot correctly send the uplink data because there is no correct uplink filter can be solved, thereby avoiding the problem. The UE sends uplink data on the wrong bearer and is lost by the network.
  • FIG. 1 is a diagram of a prior art PCC architecture
  • Figure 2 is a block diagram of PCC supporting EPS IP-CAN
  • Figure 3 is a block diagram of PCC supporting GPRS IP-CAN
  • FIG. 4 is a flowchart of a policy control method according to an embodiment of the present invention
  • FIG. 5 is a schematic flowchart of a method for controlling a policy according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a structure of a policy control apparatus according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a component of a policy control apparatus according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of a preferred structure of a policy control apparatus according to an embodiment of the present invention
  • FIG. 9 is a flowchart of a method for controlling a policy according to Embodiment 2 of the present invention.
  • FIG. 10 is a flowchart of a third policy control method according to an embodiment of the present invention.
  • FIG. 11 is a flowchart of a fourth policy control method according to an embodiment of the present invention.
  • FIG. 12 is a flowchart of a fifth policy control method according to an embodiment of the present invention.
  • FIG. 13 is a flowchart of a sixth method for controlling a policy according to an embodiment of the present invention. detailed description
  • FIG. 4 is a flowchart of a policy control method according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:
  • Step 402 Receive a request for the user equipment to add a downlink packet filter.
  • Step 404 Set the downlink packet filter to be bidirectional in response to the request, and/or generate the downlink packet filter and an uplink packet filter symmetric with the downlink packet filter; and corresponding uplink data.
  • FIG. 5 is a flowchart of a preferred method for controlling a policy according to an embodiment of the present invention, as shown in FIG. The method is applied to the network side, including:
  • Step 502 Receive a request for the user equipment to add a downlink packet filter.
  • Step 504 In response to the request, authorizing the downlink packet filter to be bidirectional, or generating a symmetric uplink packet filter.
  • the bidirectional means that the packet filter allows data whose source address, destination address is opposite, and source port number and destination port number are opposite;
  • Step 506 When the downlink packet filter is set to be bidirectional, send the downlink packet filter set to be bidirectional to the user equipment; or generate the downlink packet filter and the uplink packet. In the case of a filter, the upstream packet filter is sent to the user equipment.
  • FIG. 6-1 is a schematic structural diagram of a policy control device according to an embodiment of the present invention. As shown in FIG. 6-1, the device includes a receiving module 602 and a setting module 604. , among them:
  • the receiving module 602 is configured to receive a request for the user equipment to add a downlink packet filter.
  • the setting module 604 is configured to: in response to the request, set the downlink packet filter to dual and corresponding uplink data.
  • FIG. 6-2 is a schematic structural diagram of a component of a policy control apparatus according to an embodiment of the present invention. As shown in FIG. 6-2, the apparatus includes a receiving module 602 and a generating module 606, where:
  • the receiving module 602 is configured to receive a request for the user equipment to add a downlink packet filter
  • the generating module 606 is configured to generate, according to the request, the downlink packet filter and an uplink packet filter symmetric with the downlink packet filter.
  • the apparatus includes a receiving module 602, a setting module 604, and a generating module 606, where: a receiving module 602, configured Adding a request for a downlink packet filter to the user equipment;
  • the setting module 604 is configured to: in response to the request, set the downlink packet filter to dual and corresponding uplink data;
  • the generating module 606 is configured to generate, according to the request, the downlink packet filter and an uplink packet filter symmetric with the downlink packet filter.
  • FIG. 7 is a schematic structural diagram of a policy control apparatus according to an embodiment of the present invention.
  • the apparatus further includes a sending module 608. And configured to send, when the downlink packet filter is set to bidirectional, the downlink packet filter set to be bidirectional to the user equipment; or
  • the sending module 608 is configured to send the uplink packet filter to the user equipment when the downlink packet filter and the uplink packet filter are generated.
  • an embodiment of the present invention provides a gateway device, where the gateway device includes: a PCEF and the foregoing device.
  • the embodiment of the present invention further provides a gateway device, where the gateway device includes a BBERF and the foregoing device.
  • the user equipment UE when the IP-CAN is GPRS, the user equipment UE initiates a request to add a downlink packet filter (Packet Filter), and in response to the request, sets the downlink packet filter to a bidirectional flow, as shown in FIG. Methods include:
  • Step 801 IP-CAN session establishment
  • the UE attaches to the network to initiate an attach procedure; or the UE initiates an additional PDN connection establishment procedure.
  • the IP-CAN session is established, and the PCEF establishes a Gx session with the PCRF.
  • Step 802 Send an activated secondary PDP context request message/modify PDP context request message.
  • the UE sends an active secondary PDP context request to a Gateway GRPS Supporting Node (GGSN) through a Radio Network Controller (RNC), a Serving GRPS Supporting Node (SGSN), or the like.
  • the PDP Context Request message (also referred to as the Modify PDP Context Request message) is updated, and the message carries a new packet filter request.
  • the message carries a Traffic Flow Template, where the action code in the Traffic Flow Template is Create New TFT, and carries one or more packet filters, for activating a Packet Data Protocol (PDP) context request message. .
  • PDP Packet Data Protocol
  • the opcode in the Traffic Flow Template is to generate a new TFT (Create New TFT), add a packet filter to existing TFT in the existing TFT or replace the packet in the existing TFT. Replace Packet filters in existing TFT and carry one or more Packet filters.
  • the direction of the above Packet Filter is indicated as downlink.
  • Step 803 Send a Diameter Credit Control Request (CC) message
  • Diameter is the name of the protocol rule, and the Chinese name is "diameter". If the GGSN receives the request to activate the secondary PDP context, the PCEF located in the GGSN sends a Diameter CCR message to the PCRF, and the message carries the newly assigned bearer identifier of the PDP context. (Bearer ID) and TFT packet filter information.
  • the TFT packet filter information includes all Packet filters carried in the Activate PDP Context Request message.
  • the PCEF located in the GGSN sends a Diameter CC message to the PCRF, where the message carries the Bearer ID and the TFT packet filter information allocated for the PDP context before the PCEF, where the TFT packet filter information is the GGSN according to the message.
  • the operation code in the medium and the packet filter of the TFT of the PDP context determined by the updated Packet filter.
  • Step 804 policy decision
  • the PCRF saves the information in the Diameter CCR. If the PCRF has no relevant sign Approximately, the PCRF may interact with the SPR to obtain subscription information. The PCRF makes policy decisions based on the contract information, the information reported by the PCEF, and the network policy configured by itself, and formulates the PCC rules. The UE requests the newly added Packet Filter in the TFT Packet filter information reported by the PCEF. Although the Packet Filter has only the downlink direction, the PCRF will be in the corresponding Service Data Flow Template (SDF Template) in the specified PCC rule. The direction is set to bidirectional. The Flow-Direction AVP carried in the Flow-Information Attribute-Value Pair (AVP) is bidirectional or "BIDIRECTIONAL".
  • SDF Template Service Data Flow Template
  • Step 805 bearer binding
  • the PCRF performs bearer binding, and associates the established PCC rule with the Bearer ID reported by the PCEF, that is, the PCC rule is bound to the bearer.
  • Step 806 Return a Diameter Credit Control Answer (CCA) message
  • the PCRF returns a Diameter CCA message to the PCEF, where the message carries the Bearer ID, the PCC rule, and the bearer-related QoS information.
  • Step 807 Send an active secondary PDP context response message/modify a PDP context response message.
  • the PCEF constructs the bearer TFT according to the SDF template in the PCC rule returned by the PCRF, where the GGSN receives the new downlink in step S803.
  • the filter because the corresponding filter of the SDF template becomes bidirectional, the corresponding filter in the TFT constructed by the PCEF is bidirectional.
  • the GGSN returns a response message to the UE through the SGSN, the RNC, the node, or the enhanced node (NB, NodeB, or eNB, E-NodeB), and carries the bearer-related TFT and QoS.
  • Step 808 The UE performs uplink packet filtering and sending according to the TFT information.
  • the UE filters the uplink data packet according to the obtained TFT.
  • the Packet Filter requested by the UE has only the downlink direction in step S803
  • the Packet Filter in the TFT provided by the network to the UE is bidirectional in step S807.
  • UE according to the Packet Filter After the matching is successful, the uplink associated with the TFT is used for uplink packet transmission.
  • Step 809: The GGSN performs uplink data packet filtering and bearer check according to the TFT information. Specifically, the GGSN performs bearer check on the uplink data sent by the UE according to the TFT, and allows the uplink data to pass.
  • the GGSN will authorize a corresponding Packet Filter to be bidirectional according to the local policy and send it to the UE.
  • bidirectional Packet Filter that is, a filter itself is unidirectional, but allows the source address, the destination address to be swapped, and the data exchanged between the source port number and the destination port number.
  • the user equipment UE when the IP-CAN is GPRS, the user equipment UE initiates a request to add a downlink packet filter, and in response to the request, generates the downlink packet filter and an uplink packet filter symmetric with the downlink packet filter.
  • the process, as shown in FIG. 9 the method includes: Step 901 to Step 903 in the second embodiment respectively corresponding to steps 801 to 803 in the first embodiment, and therefore no further description is provided;
  • Step 904 Policy decision
  • the PCRF saves the information in the Diameter CCR. If the PCRF does not have an associated subscription, the PCRF may interact with the SPR to obtain subscription information.
  • the PCRF makes policy decisions based on the contract information, the information reported by the PCEF, and the network policy configured by itself, and formulates PCC rules.
  • the PCRF sets the SDF template included in the PCC rule (PCC Rule 1) to the packet filter requested by the UE and is set to the downlink direction. Meanwhile, the PCRF additionally generates a PCC rule (PCC Rule 2), where the Packet Filter and the UE are The source address, destination address interchange, source port number, and destination port number of the newly added Packet Filter are exchanged, and the Packet Filter is set to the upstream direction.
  • PCC Rule 2 PCC rule
  • the PCRF performs bearer binding, and associates the PCC rule 1 and the PCC rule 2 with the Bearer ID reported by the PCEF, that is, the PCC rule is bound to the bearer.
  • Step 906 Return a Diameter CCA message
  • the PCRF returns a Diameter CCA message to the PCEF, where the message carries the Bearer ID,
  • PCC Rule 1 and PCC Rule 2 and bearer-related QoS information.
  • Step 907 Send an activation sub-PDP context response message/modify a PDP context response message; a PCEF located in the GGSN constructs a TFT according to a PCC rule, and the TFT includes two symmetric ones.
  • the GGSN returns a response message to the UE through the SGSN, the RNC, and the NB, and carries the associated TFT and QoSo.
  • Step 908 The UE performs uplink packet filtering and sending according to the TFT information.
  • the UE filters the uplink data packet according to the obtained TFT. Therefore, after the UE performs the matching according to the symmetric uplink filter packet filter, the UE uses the bearer associated with the TFT to perform uplink data packet transmission.
  • Step 909 The GGSN performs uplink data packet filtering and bearer check according to the TFT information.
  • the GGSN performs bearer check on the uplink data sent by the UE according to the TFT, and allows the uplink data to pass.
  • the network does not support the PCC, or the PCC rule returned by the PCRF does not include a source address, a destination address interchange, and a source port number and a destination port number interchangeable packet.
  • the PCC rule of the filter then the GGSN will formulate a symmetric uplink unidirectional Packet Filter according to the local policy, and construct a TFT correspondingly, and send the packet filter to the UE.
  • the PCRF sends the two PCC rules including the symmetric uplink and downlink packet filters to the UE together in the response message.
  • the PCRF may also send a PCC rule including a downlink one-way packet filter to the UE in the response message.
  • PCRF can also pass Diameter
  • the RAR message sends the PCC rule 2, which includes the symmetric uplink unidirectional packet filter, to the PCEF.
  • the GGSN then sends the TFT that adds the symmetric uplink unidirectional packet filter to the UE by updating the PDP context request message.
  • the GGSN sends the TFTs including the symmetric uplink and downlink packet filters to the UE in the response message.
  • the GGSN may also send a TFT including a downlink unidirectional packet filter to the UE in the response message.
  • the GGSN may also send the TFT that adds the symmetric uplink unidirectional packet filter to the UE by updating the PDP context request message.
  • the above method is used to generate a corresponding uplink single-line Packet Filter for the network. If the UE requests to delete the previously added downlink unidirectional packet filter, the uplink unidirectional Packet Filter is also deleted by the network.
  • the IP-CAN is an EPS
  • the UE initiates a request to add a downlink Packet Filte
  • the downlink packet filter is set to a bidirectional flow.
  • the method includes:
  • Step 1001 IP-CAN session establishment
  • the UE attaches to the network, initiates an attach procedure, or the UE initiates an additional PDN connection establishment procedure.
  • the IP-CAN session is established, and the PCEF establishes a Gx session with the PCRF.
  • Step 1002 Send a request to bear a resource modification message.
  • the UE sends a request bearer resource modification message to the P-GW through the eNodeB, the MME, the S-GW, and the like, where the message carries a new packet filter request.
  • the message carries Traffic Aggregate Description, and the operation code is Create New TFT, Add packet filters to existing TFT or eplace Packet filters in existing TFT, and carries one or more Packet filters.
  • the direction of the above Packet Filter is indicated as downlink.
  • Step 1003 Send a Diameter CC message
  • the PCEF located in the P-GW sends a Diameter CC message to the PCRF, carrying a Packet-Filter-Information, which includes a Packet-Filter-Content AVP carrying request.
  • the Packet Filter, Flow-Direction AVP is set to Downlink.
  • the Packet-Filter-Operation AVP in the CCR message is set to "ADDITION"; if Add packet filters to existing TFT, the Packet-Filter-Operation AVP is set to "ADDITION", And carry the Packet-Filter-Information, which includes the power to add.
  • Packet-Filter-Identifier corresponding to the incoming Packet Filter if the opcode is insert Packet filters in existing TFT, the Bay 1 J Packet-Filter-Operation AVP is set to "MODIFICATION", and additionally carries Packet-Filter-Information, including The Packet-Filter-Identifier corresponding to the Packet filter.
  • Step 1004 Policy decision
  • the PCRF saves the information in the Diameter CCR. If the PCRF does not have an associated subscription, the PCRF may interact with the SPR to obtain subscription information.
  • the PCRF makes policy decisions based on the contract information, the information reported by the PCEF, and the network policy configured by itself, and formulates the PCC rules.
  • the UE requests the newly added Packet Filter. Although the Packet Filter has only the downlink direction, the direction of the corresponding Service Data Flow Template (SDF Template) in the PCC rule is two-way.
  • the Flow-Direction AVP carried in the Flow-Information AVP takes the value BIDIRECTIONAL 0
  • Step 1005 Send a Diameter CCA message.
  • the PCRF returns a Diameter CCA message to the PCEF, and the message carries the formulated
  • Step 1006 bearer binding
  • the PCEF performs bearer binding according to a QoS Class Identifier (QCI)/Allocation and Retention Priority (ARP) carried in the PCC rule.
  • QCI QoS Class Identifier
  • ARP Allocation and Retention Priority
  • PCEF adds the SDF Template in the PCC rule to the corresponding host TFT. in.
  • the packet filtered by the P-GW in the step 1003 is the downlink, and the corresponding Packet Filter in the PCEF structure is bidirectional.
  • Step 1007 Send a bearer activation request response message/bearer modification request response message.
  • the P-GW returns a bearer activation request/bearer modification request response message to the UE by using the S-GW, the MME, and the eNB, where the bearer activation request response message is sent.
  • the bearer modification request response message carries the bearer-related TFT and QoS, and the bearer activation request response message is a response message to the bearer activation request message, and the bearer modification request response message is a response message to the bearer activation request message.
  • Step 1008 The UE performs uplink packet filtering and sending according to the TFT.
  • the UE filters the uplink data packet according to the obtained TFT, although in 1003, the Packet Filter requested by the UE has only the downlink direction, but in 1007, the Packet Filter in the TFT provided by the network to the UE is bidirectional, so the UE according to the UE After the packet filter is successfully matched, the uplink associated with the TFT is used for uplink packet transmission.
  • Step 1009 The P-GW performs uplink data packet filtering and bearer check according to the TFT. Specifically, the GGSN performs bearer check on the uplink data sent by the UE according to the TFT, and allows the uplink data to pass. If the corresponding Packet Filter in the SDF template in the PCC rule returned by the PCC or PCRF is not bidirectional, the P-GW will grant a corresponding Packet Filter to the two-way according to the local policy and send it to the UE.
  • the two-way packet filter Packet Filter means that the filter itself is unidirectional, but allows the source address, the destination address exchange, and the data exchanged by the source port number and the destination port number to pass.
  • the IP-CAN is an EPS
  • the user equipment UE initiates a request to add a downlink packet filter, and in response to the request, generate a flow of the downlink packet filter and an uplink packet filter symmetric with the downlink packet filter.
  • the method includes: Steps 1101 to 1103 in the fourth embodiment of the present invention respectively correspond to the above steps 1001 to 1003, and therefore are not described again;
  • Step 1104 Policy decision
  • the PCRF saves the information in the Diameter CCR. If the PCRF does not have an associated contract, the PCRF may interact with the SPR to obtain subscription information. The PCRF makes policy decisions based on the contract information, the information reported by the PCEF, and the network policy configured by itself, and formulates PCC rules. The PCRF sets the SDF template included in the PCC rule (PCC Rule 1) to the packet filter requested by the UE and is set to the downlink direction.
  • PCC Rule 1 the SDF template included in the PCC rule
  • the PCRF additionally generates a PCC rule (PCC Rule 2), where the Packet Filter and the UE are The source address, the destination address exchange, the source port number, and the destination port number of the newly added Packet Filter are exchanged, and the Packet Filter is set to the upstream direction.
  • PCC Rule 2 PCC Rule 2
  • Step 1105 Send a Diameter CCA message.
  • the PCRF sends two PCC rules to the PCEF through Diameter CCA messages.
  • Step 1106 bearer binding
  • the PCEF performs bearer binding according to the QCI/ARP carried in the PCC rule 1 and the PCC rule 2.
  • the P-GW constructs a TFT according to the PCC rule, and the TFT is directed to two Packet Filters containing symmetry.
  • Step 1107 Send a bearer activation request response message/bearer modification request response message.
  • the P-GW returns a bearer activation request response message/bearer modification request response message to the UE by using the S-GW, the MME, and the eNB, where the bearer activation request is sent.
  • the response message/bearer modification request response message carries the bearer-related TFT and QoS.
  • Step 1108 The UE performs uplink packet filtering and sending according to the TFT.
  • the UE filters the uplink data packet according to the obtained TFT. Therefore, after the UE successfully performs matching according to the symmetric uplink filter Packet Filter, the UE uses the associated bearer of the TFT. Line upstream packet transmission.
  • Step 1109 The P-GW performs uplink data packet filtering and bearer check according to the TFT. Specifically, the GGSN performs bearer check on the uplink data sent by the UE according to the TFT, and allows the uplink data to pass.
  • the P-GW will formulate a symmetric uplink one-way Packet Filter according to the local policy, and construct a TFT correspondingly, and send the packet to the UE to the UE.
  • the PCRF sends the two PCC rules including the symmetric uplink and downlink packet filter to the UE in the response message.
  • the PCRF may also send a PCC rule containing a downlink single-direction packet filter to the UE in the response message.
  • the PCRF can also send the PCC rule 2 after the packet contains the symmetric uplink unidirectional packet filter to the PCEF through the Diameter RAR message, and then the P-GW sends the TFT after adding the symmetric uplink unidirectional packet filter by updating the bearer request message.
  • the UE sends the two PCC rules including the symmetric uplink and downlink packet filter to the UE in the response message.
  • the PCRF may also send a PCC rule containing a downlink single-direction packet filter to the UE in the response message.
  • the PCRF can also send the PCC rule 2 after the packet contains the symmetric uplink unidirectional packet filter to the PCEF through the Diameter RAR message, and then the P-GW sends the TFT after adding the
  • the P-GW sends the TFTs including the symmetric uplink and downlink acket filters to the UE in the response message.
  • the P-GW may also send a TFT including a downlink unidirectional packet filter to the UE in the response message.
  • the P-GW may also send the TFT that adds the symmetric uplink unidirectional packet filter to the UE by using the bearer update request message.
  • Embodiment 4 for the network to formulate a corresponding uplink single-line Packet Filter, if the UE requests to delete the previously added downlink unidirectional packet filter, the uplink single-direction Packet Filter is also deleted by the network.
  • the IP-CAN is an EPS
  • the UE initiates a request to add a downlink Packet Filter, and sets the downlink packet filter to a bidirectional flow.
  • the method includes:
  • Step 1201 IP-CAN session establishment
  • the UE attaches to the network, initiates an attach procedure, or the UE initiates an additional PDN connection establishment procedure.
  • the IP-CAN session is established, the PCEF establishes a Gx session with the PCRF, and the BBE F establishes a gateway control session with the PCRF.
  • Step 1202 Send a request to bear a resource modification message.
  • the UE sends a request bearer resource modification message to the S-GW through the eNodeB, the MME, and the like, and the message carries the newly added packet filter request.
  • the message carries the Traffic Aggregate Description, and the operation code is Create New TFT, Add packet filters to existing TFT or Replace Packet filters in existing TFT, and the direction of carrying one or more Packet filter 0 or above Packet Filter is indicated as downlink.
  • Step 1203 Send a Diameter CC message
  • the BBERF located in the S-GW sends a Diameter CC message to the PCRF, and carries Packet-Filter-Information, which includes a Packet-Filter-Content AVP carrying request, and the Flow-Direction AVP is set to Downlink.
  • the Packet-Filter-Operation AVP in the CCR message is set to "ADDITION"; if Add packet filters to existing TFT, the Packet-Filter-Operation AVP is set to "ADDITION", And carry the Packet-Filter-Information, which includes the power to add.
  • the Packet-Filter-Identifier corresponding to the incoming Packet Filter if the opcode is Replace Packet filters in existing TFT, the Bay 1 J Packet-Filter-Operation AVP is set to "MODIFICATION", and additionally carries Packet-Filter-Information, including The Packet-Filter-Identifier corresponding to the Packet filter.
  • Step 1204 Policy decision
  • the PCRF saves the information in the Diameter CCR. If the PCRF has no relevant sign Approximately, the PCRF may interact with the SPR to obtain subscription information. The PCRF makes policy decisions based on the subscription information, the information reported by the PCEF, and the network policy configured by itself, and formulates PCC rules and corresponding QoS rules. In the information reported by the PCEF, the UE requests the newly added Packet Filter. Although the Packet Filter has only the downlink direction, the direction of the corresponding Service Data Flow Template (SDF Template) in the PCC rule/QoS rule of the PCRF is Two-way, the specific Flow-Direction AVP carried in the Flow-Information AVP is BIDIRECTIONAL.
  • SDF Template Service Data Flow Template
  • Step 1205 Send a Diameter CCA message.
  • the PCRF returns a Diameter CCA message to the BBERF, where the message carries the formulated QoS rule.
  • Step 1206 bearer binding
  • the BBERF performs bearer binding according to the QCI/ARP carried in the QoS rule.
  • BBE F adds the SDF Template in the QoS rule to the corresponding bearer TFT.
  • the newly added Packet Filter received by the S-GW is downlink. Since the corresponding Packet Filter of the SDF template becomes bidirectional, the corresponding Packet Filter in the TFT of the BBERF structure is also bidirectional.
  • Step 1207 Send a bearer activation request response message/bearer modification request response message.
  • the S-GW returns a response message carrying the activation request/bearer modification request to the UE through the MME and the eNB, and carries the bearer-related TFT and QoS.
  • Step 1208 Send a Diameter Re-Authorization Request (RAR) message
  • the PCRF sends a PCC rule to the PCEF through a Diameter RAR message, in other words, the Diameter RAR message carries a PCC rule.
  • Step 1209 Send a Diameter Re-Authorization Answer (RAA) message; Specifically, the PCEF sends a Diameter RAA message to the PCRF for confirmation.
  • RAA Diameter Re-Authorization Answer
  • Step 1210 The UE performs uplink packet filtering and sending according to the TFT.
  • the UE filters the uplink data packet according to the obtained TFT.
  • the packet filter requested by the UE has only the downlink direction in 1203, in step 1207, the Packet Filter in the TFT provided by the network to the UE is bidirectional, so the UE according to the packet After the filter is successfully matched, the uplink associated with the TFT is used for uplink packet transmission.
  • Step 1211 The S-GW performs uplink data packet filtering and bearer check according to the TFT. Specifically, the S-GW performs bearer check on the uplink data sent by the UE according to the TFT, and allows the uplink data to pass.
  • the Packet Filter is not bidirectional, then the S-GW will authorize a corresponding Packet Filter to be bidirectional according to the local policy and send it to the UE.
  • bidirectional Packet Filter that is, a filter itself is unidirectional, but allows data exchanged between the source address, the destination address, and the source port number and destination port number to pass.
  • the IP-CAN is an EPS
  • the user equipment UE initiates a request to add a downlink packet filter, and in response to the request, generate a flow of the downlink packet filter and an uplink packet filter symmetric with the downlink packet filter.
  • Figure 13 includes:
  • Steps 1301 to 1303 in the sixth embodiment of the present invention respectively correspond to the above steps 1201 to 1203, and therefore will not be described again.
  • Step 1304 Policy decision
  • the PCRF saves the information in the Diameter CCR. If the PCRF does not have an associated subscription, the PCRF may interact with the SPR to obtain subscription information. The PCRF makes policy decisions based on the contract information, the information reported by the PCEF, and the network policy configured by itself, and formulates PCC rules. The PCRF sets the SDF template contained in the PCC/QoS rule (PCC Rule 1/PCC Rule 2) to The UE requests the newly added Packet Filter and is set to the downlink direction.
  • PCC/QoS rule PCC Rule 1/PCC Rule 2
  • the PCRF additionally generates a PCC/QoS rule (PCC Rule 2/QoS Rule 2), where the Packet Filter and the UE request the added source address of the Packet Filter, The destination address exchange and the source port number, the destination port number are exchanged, and the Packet Filter is set to the upstream direction.
  • PCC/QoS rule PCC Rule 2/QoS Rule 2
  • Step 1305 Send a Diameter CCA message.
  • the PCRF returns a Diameter CCA message to the BBERF, where the message carries the formulated QoS rule 1 and QoS rule 2.
  • Step 1306 bearer binding
  • the BBERF performs bearer binding according to the QCI/ARP carried in the QoS rule.
  • the S-GW constructs a TFT according to the QoS rule, and the TFT includes two Packet Filters that are symmetric.
  • Step 1307 Send a bearer activation request response message/bearer modification request response message.
  • the S-GW returns a bearer activation request response message/bearer modification request response message to the UE by using the MME and the eNB, where the bearer activation request response message/bearer
  • the modification request response message carries the bearer-related TFT and QoS.
  • Step 1308 Send a Diameter AR message.
  • the PCRF sends a Diameter RAR message to the PCEF, where the Diameter RAR message carries the PCC Rule 1 and the PCC Rule 2.
  • Step 1309 Send a Diameter AA message.
  • the PCEF returns a Diameter RAA message to the PCRF for confirmation.
  • Step 1310 The UE performs uplink packet filtering and sending according to the TFT.
  • the UE filters the uplink data packet according to the obtained TFT, and after the UE performs the matching according to the symmetric uplink filter packet filter, the UE uses the bearer associated with the TFT to perform uplink data packet transmission.
  • Step 1311 The S-GW performs uplink data packet filtering and bearer verification according to the TFT. Specifically, the S-GW performs bearer verification on the uplink data sent by the UE according to the TFT, and allows The uplink data is passed.
  • the network does not support the PCC, or the PCC/Qos rule returned by the PCRF does not include the source address, the destination address interchange, and the source port number and the destination port number are interchanged.
  • the PCC/QoS rule of the packet filter then the QoS will formulate a symmetric uplink unidirectional Packet Filter according to the local policy, and construct a TFT correspondingly, and send the packet to the UE.
  • the PCRF sends the two QoS rules including the symmetric uplink and downlink packet filter to the UE in the response message.
  • the PCRF may also send a QoS rule containing the packet filter of the downlink direction to the UE in the response message.
  • the PCRF can also send the QoS rule 2 after the packet contains the symmetric uplink unidirectional packet filter to the PCEF through the Diameter RAR message, and then the S-GW adds the symmetric uplink unidirectional packet filter TFT by using the row bearer request message. Send to the UE.
  • the S-GW sends the TFTs including the symmetric uplink and downlink packet filters to the UE in the response message.
  • the S-GW may also send the TFT including the downlink unidirectional p ac k e t filter to the UE in the response message.
  • the S-GW may send the TFT after adding the symmetric uplink unidirectional packet filter to the UE by using the bearer update request message.
  • the uplink unidirectional Packet Filter is also deleted by the network.
  • the receiving module, the setting module, the generating module, and the sending module in the policy control apparatus provided by the embodiment of the present invention, and the unit included in each module may be implemented by a processor in the gateway device;
  • the logic circuit is implemented; in a specific embodiment, the processor may be a central processing unit (CPU), a microprocessor (MPU), a digital signal processor (DSP), or a field programmable gate array (FPGA).
  • CPU central processing unit
  • MPU microprocessor
  • DSP digital signal processor
  • FPGA field programmable gate array
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product.
  • the computer software product is stored in a storage medium and includes a plurality of instructions.
  • a computer device (which may be a personal computer, server, or network device, etc.) is implemented to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a removable hard disk, a read only memory (ROM), a magnetic disk or an optical disk, and the like, which can store program codes.
  • ROM read only memory
  • magnetic disk or an optical disk and the like, which can store program codes.
  • the embodiment of the present invention further provides a computer readable storage medium, where the computer readable storage medium stores computer executable instructions, and the computer executable instructions are used to execute the foregoing policy control method.
  • the user equipment is first requested to add a downlink packet filter; then, in response to the request, the downlink packet filter is set to be bidirectional; and/or, the downlink is generated.

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Abstract

本发明公开了一种策略控制方法,包括:接收用户设备增加下行分组过滤器的请求;响应所述请求,将所述下行分组过滤器设置为双向;和/或生成所述下行分组过滤器和与所述下行分组过滤器对称的上行分组过滤器;其中,所述双向用于使下行分组过滤器过滤所述用户设备的下行数据和对应的上行数据。本发明还公开了一种策略控制装置、网关设备和存储介质。

Description

一种策略控制方法及装置、 网关设备、 存储介质 技术领域
本发明涉及通信领域, 具体而言, 涉及一种策略控制方法及装置、 网 关设备、 存储介质。 背景技术
图 1是第三代合作伙伴计划( 3rd Generation Partnership Project, 3 GPP ) 定义的策略和计费控制 (Policy and Charging Control, PCC ) 架构。
策略和计费规则功能 101 ( Policy and Charging Rules Function, PC F ) 为业务使用网络资源进行服务质量(Quality of Service, QoS )和计费策略 的制订。 PCRF 制定所述控制策略需要结合从应用功能 102 ( Application Function, AF )接收的业务信息,从用户签约数据库 103 ( Subscription Profile Repository, SPR )接收的用户签约信息, 运营商配置的策略等。 PCRF 101 将为业务制定的控制策略下发给策略和计费执行功能 104 ( Policy and Charging Enforcement Function, PCEF )或者承载绑定和事件上报功能 105 ( Bearer Binding and Event Report Function, BBE F )执行。 同时 PCRF 101 可以向 PCEF 104和 /或 BBERF 105订阅承载层相关事件, 以便当承载层发 生所述事件时及时感知, 并更改控制策略。 此外, PCEF 104以及业务检测 功能 106 ( Traffic Detection Function, TDF )能够根据 PCRF 101下发的 PCC 规则( PCEF )或应用和检测控制( Application Detection and Control, ADC ) 规则 ( TDF )执行应用检测和控制功能。
PCC可以支持多种 IP连接接入网 (IP Connectivity Access Network, IP-CAN ), 譬如演进的分组系统(Evolved Packet System, EPS ), 通用分组 无线业务( General Packet Radio System, GPRS )。 图 2为 PCC支持 EPS IP-CAN的架构图,若 S5接口釆用代理移动 IP版本 6( Proxy Mobile IP version 6, ΡΜΙΡνό ), 则服务网关( Serving Gateway, S-GW ) 支持 BBERF功能。 图 3为 PCC支持 GPRS IP-CAN的架构图。
为了实现端到端的 QoS保证, 3GPP网络提供基于承载粒度的 QoS保 障。 被映射到同一个承载的业务将被釆用相同的承载层包转发处理。 若需 要提供不同的承载层包转发处理, 则需要将业务流映射到不同的 EPS承载 上。一般一个承载都有一个关联的过滤器模板(traffic flow template, TFT )。 上行业务流模板 ( uplink traffic flow template, UL TFT )是 TFT中的上行包 过滤器集合。 下行业务流模板(downlink traffic flow template, DL TFT ) TFT 中的下行包过滤器集合。 每个分组数据网络 ( Packet Data Network, PDN )连接中允许有一个承载没有 TFT。 对于 EPS IP-CAN, 默认承载可能 没有 TFT。
用户设备( User Equipment, UE )使用 UL TFT将上行方向的业务映射 使用 DL TFT将下行方向业务映射到一个 EPS承载。例如 UE基于分配关联 到承载的 UL TFT将上行数据包映射到不同的 EPS承载。 用户匹配时, 首 先比较最低优先级的 UL TFT中的包过滤器, 并且在没有找到匹配时,通过 增加优先级次序继续上行数据包过滤器的比较。 当找到匹配或者所有的上 行包过滤器都被比较过后, 这个过程结束。 如果找到匹配, 上行数据包通 过匹配的上行包过滤器所在的 TFT关联的 EPS承载传送。 如果没有找到匹 配, 上行数据包将被通过还没有分配上行包过滤器的 EPS承载发送。 如果 所有的 EPS承载(包含 PDN对应的缺省 EPS承载 ) 已经被分配了一个或 者更多的上行包过滤器, UE将放弃上行数据包。
承载可以是单向的, 对于下行单向承载, 除了该承载有一个关联的 DL TFT外,还需要有一个上行的过滤器拒绝所有的上行数据, 以防止 UE上行 数据被匹配到该下行单向承载上。
然而目前有两个问题会导致一个 PDN连接上有多于一个承载没有上行 过滤器, 而导致 UE不知道应该把数据匹配到哪个承载上发送:
1 ) PDN连接中存在一个没有 TFT的承载, 并且网络发起建立了一个 由网络提供 DL和 UL分组过滤器( packet filter ) 的承载。 UE发起对这个 有 UL和 DL TFT的承载的增加 DL packet filter操作,后续触发删除网络提 供 DL和 UL packet filter, 因此只剩 UE所增加的 DL packet filter,此时就会 导致两个承载没有 UL TFT。
2 )所有的承载都有 UL TFT, UE随后试图激活一个只有 DL TFT的承 载建立。 网络会将其解释为匹配所有的上行数据, 即 match all UL data, 因 此会去申请一个具有通配过滤器的 PCC规则。 这样, 如果过后, 网络删除 某个承载的 UL TFT, 就会导致一个承载没有 UL TFT, 一个承载拥有通配 UL TFT, 同样 UE无法确定如何将上行匹配到承载上。 发明内容
本发明实施例提供了一种策略控制方法及装置、 网关设备、 存储介质, 以至少解决当一个 PDN连接上有多于一个承载没有上行过滤器, 而导致用 户设备 UE不知道应该把数据匹配到哪个承载上发送的问题。
根据本发明实施例的第一方面, 提供了一种策略控制方法, 包括: 接收用户设备增加下行分组过滤器的请求;
响应所述请求, 将所述下行分组过滤器设置为双向; 和 /或,
生成所述下行分组过滤器和与所述下行分组过滤器对称的上行分组过 据和对应的上行数据。
优选地, 所述上行数据包括: 源地址、 目标地址与所述下行数据互换, 并且源端口号、 目的端口号与所述下行数据互换的数据。 优选地, 所述方法还包括: 在将所述下行分组过滤器设置为双向的情 况下, 向所述用户设备发送设置为双向的所述下行分组过滤器; 或者, 在生成所述下行分组过滤器和所述上行分组过滤器的情况下, 向所述 用户设备发送所述上行分组过滤器。
优选地, 在网络支持 PCC的情况下, 所述将所述下行分组过滤器设置 为双向, 包括:
策略和计费执行功能 PCEF位于的第一网关或承载绑定和事件报告功 能 BBERF位于的第二网关向策略和计费规则功能 PCRF发送所述请求; 所述第一网关或所述第二网关接收所述 PCRF对所述请求的响应; 所述第一网关或所述第二网关根据对应的本地策略和 /或所述响应将所 述下行分组过滤器设置为双向。
优选地, 所述第一网关或所述第二网关根据对应的本地策略和 /或所述 响应将所述下行分组过滤器设置为双向, 包括:
在所述响应中携带有将所述下行分组过滤器为双向的指示的情况下, 所述第一网关或所述第二网关根据所述指示将所述下行分组过滤器设置为 双向;
在所述响应中未携带所述指示的情况下, 所述第一网关或所述第二网 关根据对应的本地策略设置所述下行分组过滤器为双向。
优选地, 所述方法还包括: 在所述响应中未携带所述指示的情况下, 所述第一网关或所述第二网关判断所述响应中是否携带有所述上行分 组过滤器的信息;
如果否, 所述第一网关或所述第二网关根据对应的本地策略设置所述 下行分组过滤器为双向。
优选地, 其中, 所述第一网关根据所述指示将所述下行分组过滤器设 置为双向, 包括: 所述第一网关接收所述策略和计费控制 PCC规则, 其中, 所述 PCC规 则中设置有对应的业务数据流模板 SDF Template, 且所述 SDF Template的 方向为双向;
所述第一网关根据所述 PCC或 QoS规则中的 SDF template构造业务流 模板 TFT, 得到包含分组过滤器为双向的 TFT。
优选地, 所述第二网关根据所述指示将所述下行分组过滤器设置为双 向, 包括:
所述第二网关接收所述 PCRF制定的服务质量 QoS规则, 其中, 所述 QoS 规则中设置有对应的业务数据流模板 SDF Template , 且所述 SDF Template的方向为双向;
所述第二网关根据所述 QoS规则中的 SDF template构造所述 TFT, 得 到包含分组过滤器为双向的 TFT。
优选地, 所述方法还包括: 在网络不支持 PCC的情况下, 所述第一网 关或所述第二网关根据本地策略将所述下行分组过滤器设置为双向。
优选地, 在网络支持 PCC的情况下, 所述生成所述上行分组过滤器和 PCEF位于的第一网关或 BBERF位于的第二网关向 PCRF发送所述请 求;
所述第一网关或所述第二网关接收所述 PCRF对所述请求的响应, 其 中所述响应包含所述下行分组过滤器和所述上行分组过滤器的信息;
所述第一网关或所述第二网关根据所述信息生成所述下行分组过滤器 和所述上行分组过滤器。
优选地, 所述第一网关接收所述 PCRF对所述请求的响应, 包括: 所述第一网关接收所述 PCRF根据所述请求制定的第一 PCC 和第二 PCC规则; 其中, 所述第一 PCC规则中包含第一 SDF Template, 且所述第一 SDF Template中包含所述下行分组过滤器; 所述第二 PCC规则中包含第二 SDF Template, 且所述第二 SDF Template中包含所述上行分组过滤器;
对应地, 所述第一网关根据所述信息生成所述下行分组过滤器和所述 上行分组过滤器, 包括: 所述第一网关根据所述第一 PCC规则和所述第二 PCC规则构造 TFT, 得到包含所述下行分组过滤器和所述上行分组过滤器 的 TFT。
优选地, 所述第二网关接收所述 PCRF对所述请求的响应包括: 所述 第二网关接收所述 PCRF根据所述请求制定的第一 QoS规则以及第二 QoS 规则;
其中, 所述第一 QoS规则中包含第一 SDF Template, 且所述第一 SDF Template中包含所述下行分组过滤器; 所述第二 QoS规则中包含第二 SDF Template, 且所述第二 SDF Template中包含所述上行分组过滤器;
对应地, 所述第二网关根据所述信息生成所述下行分组过滤器和所述 对称的上行分组过滤器包括: 所述第二网关根据所述第一 QoS规则以及所 述第二 QoS规则构造 TFT, 得到包含所述下行分组过滤器以及所述上行分 组过滤器。
优选地, 所述方法还包括: 在网络不支持 PCC的情况下, 所述第一网 关或所述第二网关根据本地策略生成所述下行分组过滤器和所述上行分组 过滤器。
根据本发明实施例的第二方面, 提供了一种策略控制装置, 包括接收 模块、 设置模块和生成模块, 其中:
所述接收模块, 配置为接收用户设备增加下行分组过滤器的请求; 所述设置模块, 配置为响应所述请求, 将所述下行分组过滤器设置为 双向; 和对应的上行数据; 和 /或,
所述生成模块, 配置为响应所述请求, 生成所述下行分组过滤器和与 根据本发明实施例的第三方面, 提供了一种网关设备, 所述网关设备 包括: PCEF以及前述装置。
根据本发明实施例的第四方面, 提供了一种网关设备, 所述网关设备 包括 BBERF以及前述装置。
根据本发明实施例的第五方面, 提供了一种计算机可读存储介质, 所 述存储介质中存储有计算机可执行指令, 所述计算机可执行指令用于执行 上述的策略控制方法。
通过上述本发明实施例提供的策略控制方法及装置、 网关设备、 存储 介质, 先接收用户设备增加下行分组过滤器的请求; 响应所述请求, 将所 述下行分组过滤器设置为双向; 和 /或, 生成所述下行分组过滤器和与所述 下行分组过滤器对称的上行分组过滤器; 如此, 能够解决 UE因没有正确的 上行过滤器而无法正确发送上行数据的问题,进而达到了避免因 UE在错误 的承载上发送上行数据而被网络丟包效果。 附图说明
此处所说明的附图用来提供对本发明的技术方案进一步理解, 构成本 申请的一部分, 本发明的示意性实施例及其说明用于解释本发明的技术方 案, 并不构成对本发明的保护范围不当限定。 在附图中:
图 1是现有技术的 PCC架构图;
图 2是 PCC支持 EPS IP-CAN的架构图;
图 3是 PCC支持 GPRS IP-CAN的架构图;
图 4是本发明实施例提供的策略控制方法的流程图; 图 5是本发明实施例提供的策略控制方法的优选的流程图; 图 6-1是本发明实施例提供的策略控制装置的组成结构示意图一; 图 6-2是本发明实施例提供的策略控制装置的组成结构示意图二; 图 6-3是本发明实施例提供的策略控制装置的组成结构示意图三; 图 7是本发明实施例提供的策略控制装置的优选的组成结构示意图; 图 8是本发明实施例一策略控制方法的流程图;
图 9是本发明实施例二策略控制方法的流程图;
图 10是本发明实施例三策略控制方法的流程图;
图 11是本发明实施例四策略控制方法的流程图;
图 12是本发明实施例五策略控制方法的流程图;
图 13是本发明实施例六策略控制方法的流程图。 具体实施方式
需要说明的是, 在不冲突的情况下, 本申请中的实施例及实施例中的 特征可以相互组合。 下面将参考附图并结合实施例来详细说明本发明的技 术方案。
本发明实施例提供了一种策略控制方法, 应用于网络侧, 图 4是本发 明实施例提供的策略控制方法的流程图, 如图 4 所示, 该方法包括如下的 步骤:
步骤 402, 接收用户设备增加下行分组过滤器的请求;
步骤 404, 响应所述请求, 将所述下行分组过滤器设置为双向; 和 /或, 生成所述下行分组过滤器和与所述下行分组过滤器对称的上行分组过滤 器; 和对应的上行数据。
图 5是本发明实施例提供的策略控制方法的优选的流程图, 如图 5所 示, 该方法应用于网络侧, 包括:
步骤 502, 接收用户设备增加下行分组过滤器的请求;
步骤 504, 响应所述请求, 将所述下行分组过滤器授权为双向, 或者生 成对称的上行分组过滤器;
其中, 双向是指所述分组过滤器允许源地址、 目的地地址相反以及源 端口号、 目的地端口号相反的数据通过;
步骤 506, 在将所述下行分组过滤器设置为双向的情况下, 向所述用户 设备发送设置为双向的所述下行分组过滤器; 或者, 在生成所述下行分组 过滤器和所述上行分组过滤器的情况下, 向所述用户设备发送所述上行分 组过滤器。
本发明实施例也提供了一种策略控制装置,图 6-1是本发明实施例提供 的策略控制装置的组成结构示意图, 如图 6-1 所示, 该装置包括接收模块 602和设置模块 604, 其中:
接收模块 602, 配置为接收用户设备增加下行分组过滤器的请求; 设置模块 604, 配置为响应所述请求, 将所述下行分组过滤器设置为双 和对应的上行数据。
图 6-2是本发明实施例提供的策略控制装置的组成结构示意图二,如图 6-2所示, 该装置包括接收模块 602和生成模块 606, 其中:
接收模块 602, 配置为接收用户设备增加下行分组过滤器的请求; 生成模块 606, 配置为响应所述请求, 生成所述下行分组过滤器和与所 述下行分组过滤器对称的上行分组过滤器。
图 6-3是本发明实施例提供的策略控制装置的组成结构示意图三,如图 6-3所示, 该装置包括接收模块 602、 设置模块 604和生成模块 606, 其中: 接收模块 602, 配置为接收用户设备增加下行分组过滤器的请求; 设置模块 604, 配置为响应所述请求, 将所述下行分组过滤器设置为双 和对应的上行数据;
生成模块 606, 配置为响应所述请求, 生成所述下行分组过滤器和与所 述下行分组过滤器对称的上行分组过滤器。
基于上述图 6-1至图 6-3所示的实施例, 图 7是本发明实施例提供的策 略控制装置的优选的组成结构示意, 如图 7 所示, 该装置还包括发送模块 608, 配置为在将所述下行分组过滤器设置为双向的情况下, 向所述用户设 备发送设置为双向的所述下行分组过滤器; 或者,
发送模块 608,配置为在生成所述下行分组过滤器和所述上行分组过滤 器的情况下, 向所述用户设备发送所述上行分组过滤器。
基于上述的策略控制装置, 本发明实施例提供一种网关设备, 该网关 设备包括: PCEF以及前述装置。
基于上述的策略控制装置, 本发明实施例再提供一种网关设备, 该网 关设备包括 BBERF以及前述装置。
为了使本发明的技术方案和实现方法更加清楚, 下面将结合优选的实 施例对其实现过程进行详细描述。
实施例一
本实施例描述 IP-CAN为 GPRS时,用户设备 UE发起请求增加下行分 组过滤器(Packet Filter ), 响应该请求, 将所述下行分组过滤器设置为双向 的流程, 如图 8所示, 该方法包括:
步骤 801 : IP-CAN会话建立;
具体地, UE附着到网络, 发起附着流程; 或者 UE发起另外的 PDN 连接建立流程。 IP-CAN会话建立, PCEF与 PCRF建立 Gx会话。
步骤 802:发送激活次 PDP上下文请求消息 /修改 PDP上下文请求消息; 具体地, UE通过无线网络控制器( Radio Network Controller, RNC )、 服务 GPRS支持节点 (Serving GRPS Supporting Node, SGSN )等向网关 GRPS支持节点( Gateway GRPS Supporting Node, GGSN )发送激活次 PDP 上下文请求或更新 PDP上下文请求消息 (又称为修改 PDP上下文请求消 息), 消息中携带新增 packet filter请求。 具体在消息中携带 Traffic Flow Template, 其中对于激活次分组数据协议(Packet Data Protocol, PDP )上 下文请求消息, Traffic Flow Template中的操作码为 Create New TFT, 并且 携带一个或多个分组过滤器 Packet filter。 对于更新 PDP上下文请求消息, Traffic Flow Template中的操作码为生成新的 TFT ( Create New TFT ), 在 已存在 TFT中添加分组过滤器 ( Add packet filters to existing TFT )或在已 存在 TFT中替换分组过滤器( Replace Packet filters in existing TFT ), 并且 携带一个或多个 Packet filter。 以上 Packet Filter的方向均指示为下行。
步骤 803: 发送 Diameter信用控制请求( Credit Control Request, CC ) 消息;
其中, Diameter为协议规则的名称, 中文名为 "直径"; 若 GGSN收到 激活次 PDP上下文请求,位于 GGSN的 PCEF向 PCRF发送 Diameter CCR 消息, 消息中携带 PCEF为该 PDP上下文新分配的承载标识( Bearer ID ) 和 TFT packet filter information。 TFT packet filter information信息包含激活 次 PDP上下文请求消息携带的所有 Packet filter。 若 GGSN收到更新 PDP 上下文请求消息, 位于 GGSN的 PCEF向 PCRF发送 Diameter CC 消息, 消息中携带 PCEF之前为该 PDP上下文分配的 Bearer ID和 TFT packet filter information, 其中, TFT packet filter information为 GGSN根据消息中的操 作码以及更新的 Packet filter确定的该 PDP上下文的 TFT的 Packet filter。
步骤 804: 策略决策;
具体地, PCRF保存 Diameter CCR中的信息。 若 PCRF没有相关的签 约, PCRF可能与 SPR交互, 获取签约信息。 PCRF根据签约信息、 PCEF 上报的信息以及自身配置的网络策略进行策略决策, 制定 PCC规则。 对于 PCEF上报的 TFT Packet filter information信息中 UE请求新增的 Packet Filter, 虽然这些 Packet Filter只有下行方向, PCRF将在制定的 PCC规则中 对应的业务数据流模板 ( Service Data Flow Template, SDF Template ) 的方 向设置为双向, 具体的在 Flow-Information属性值对 ( Attribute- Value Pair, AVP ) 中携带的 Flow-Direction AVP取值为双向即 "BIDIRECTIONAL"。
步骤 805: 承载绑定;
具体地, PCRF执行承载绑定,将制定的 PCC规则与 PCEF上报的 Bearer ID进行关联, 即 PCC规则绑定到该承载。
步骤 806: 返回 Diameter信用控制应答 ( Credit Control Answer, CCA ) 消息;
具体地, PCRF向 PCEF返回 Diameter CCA消息,消息中携带 Bearer ID、 PCC规则以及承载相关的 QoS信息。
步骤 807:发送激活次 PDP上下文应答消息 /修改 PDP上下文应答消息; 具体地, PCEF根据 PCRF返回的 PCC规则中的 SDF template构造该 承载的 TFT, 其中在步骤 S803 中 GGSN收到的新增的下行过滤器, 由于 SDF template的对应的过滤器时变成双向, 所以 PCEF构造的 TFT中对应 的过滤器是双向的。 GGSN通过 SGSN、 RNC、 节点或增强型节点 (NB, NodeB, 或 eNB, E-NodeB ) 向 UE返回应答消息, 携带承载相关的 TFT、 QoS。
步骤 808: UE根据 TFT信息执行上行数据包过滤及发送;
具体地, UE根据获得的 TFT对上行数据包进行过滤, 尽管步骤 S803 中, UE请求的 Packet Filter只有下行方向, 但是在步骤 S807中, 网络给 UE提供的 TFT中的 Packet Filter是双向的, 因此, UE根据该 Packet Filter 进行匹配成功后, 使用该 TFT关联的承载进行上行数据包发送。 步骤 809: GGSN根据 TFT信息执行上行数据包过滤及承载校验; 具体地, GGSN根据 TFT对 UE发送上行数据进行承载校验, 并允许 上行数据通过。
若网络不支持 PCC、 或 PCRF返回的 PCC规则中的 SDF template中相 应的 Packet Filter不是双向的,那么 GGSN将根据本地策略授权一个对应的 Packet Filter为双向的, 并发送给 UE。
所谓双向 Packet Filter即一个过滤器本身是单向的, 但是允许源地址、 目的地地址互换的 ( swapped ) 以及源端口号、 目的地端口号互换的数据通 过。
实施例二
本实施例描述 IP-CAN为 GPRS时,用户设备 UE发起请求增加下行分 组过滤器 Packet Filter; 响应该请求, 生成所述下行分组过滤器和与所述下 行分组过滤器对称的上行分组过滤器的流程, 如图 9所示, 该方法包括: 本实施例二中步骤 901至步骤 903分别——对应于上述实施例一中步 骤 801至步骤 803, 因此不再赘述;
步骤 904: 策略决策;
具体地, PCRF保存 Diameter CCR中的信息。 若 PCRF没有相关的签 约, PCRF可能与 SPR交互, 获取签约信息。 PCRF根据签约信息、 PCEF 上报的信息以及自身配置的网络策略进行策略决策,制定 PCC规则。 PCRF 将 PCC规则 ( PCC规则 1 ) 中包含的 SDF template设置为 UE请求新增的 Packet Filter, 并且设置为下行方向; 同时, PCRF另外生成一个 PCC规则 ( PCC规则 2 ), 其中的 Packet Filter与 UE请求新增的 Packet Filter的源地 址、 目的地地址互换以及源端口号、 目的地端口号互换,并且该 Packet Filter 设置为上行方向。 步骤 905: 承载绑定;
具体地, PCRF执行承载绑定, 将制定的 PCC规则 1和 PCC规则 2与 PCEF上报的 Bearer ID进行关联, 即 PCC规则绑定到该承载。
步骤 906: 返回 Diameter CCA消息;
具体地, PCRF向 PCEF返回 Diameter CCA消息,消息中携带 Bearer ID、
PCC规则 1和 PCC规则 2以及承载相关的 QoS信息。
步骤 907:发送激活次 PDP上下文应答消息 /修改 PDP上下文应答消息; 位于 GGSN的 PCEF根据 PCC规则构造 TFT,该 TFT包含对称的两个
Packet Filter。 GGSN通过 SGSN、 RNC、 NB向 UE返回应答消息, 携带承 载相关的 TFT、 QoSo
步骤 908: UE根据 TFT信息执行上行数据包过滤及发送;
具体地, UE根据获得的 TFT对上行数据包进行过滤, 因此, UE根据 对称的上行过滤器 Packet Filter进行匹配成功后,使用该 TFT关联的承载进 行上行数据包发送。
步骤 909: GGSN根据 TFT信息执行上行数据包过滤及承载校验; GGSN根据 TFT对 UE发送上行数据进行承载校验, 并允许上行数据 通过。
同样地, 本发明实施例一和实施例二中, 若网络不支持 PCC、 或 PCRF 返回的 PCC规则中不包含源地址、 目的地地址互换以及源端口号、 目的地 端口号互换的 packet filter的 PCC规则, 那么 GGSN将根据本地策略制定 一个对称的上行单向的 Packet Filter, 并相应的构造 TFT, 其中向包含对称 的两个 Packet Filter, 发送给 UE。
在实施例二中, PCRF将包含对称的上下行 packet filter的 2个 PCC规 则在应答消息中一并发送给 UE。 PCRF也可以在应答消息中将包含下行单 向的 packet filter的 PCC规则发送给 UE。之后, PCRF还可以通过 Diameter RAR消息将包包含对称的上行单向 packet filter后的 PCC规则 2发送给 PCEF, 之后 GGSN通过更新 PDP上下文请求消息将添加对称的上行单向 packet filter后的 TFT发送给 UE。
在实施例一和实施例二中, GGSN将包含对称的上下行 packet filter的 TFT在应答消息中一并发送给 UE。 GGSN也可以在应答消息中将包含下行 单向的 packet filter的 TFT发送给 UE。 之后, GGSN还可以通过更新 PDP 上下文请求消息将添加对称的上行单向 packet filter后的 TFT发送给 UE。
以上, 对于网络生成一个对应的上行单行 Packet Filter的方法, 若 UE 请求删除之前增加的下行单向 packet filter时,上行单向 Packet Filter也由网 络一起删除。
实施例三
本实施例描述 IP-CAN为 EPS, UE发起请求增加下行 Packet Filte, 将 所述下行分组过滤器设置为双向的流程, 如图 10所示, 该方法包括:
步骤 1001 : IP-CAN会话建立;
具体地, UE附着到网络, 发起附着流程, 或者 UE发起另外的 PDN 连接建立流程。 IP-CAN会话建立, PCEF与 PCRF建立 Gx会话。
步骤 1002: 发送请求承载资源修改消息;
具体地, UE通过 eNodeB、 MME、 S-GW等向 P-GW发送请求承载资 源修改消息, 消息中携带新增 packet filter请求。 具体在消息中携带 Traffic Aggregate Description , 操作码为 Create New TFT、 Add packet filters to existing TFT或 eplace Packet filters in existing TFT, 并且携带一个或多个 Packet filter。 以上 Packet Filter的方向均指示为下行。
步骤 1003: 发送 Diameter CC 消息;
具体地, 位于 P-GW的 PCEF向 PCRF发送 Diameter CC 消息, 携带 Packet-Filter-Information , 其中包含 Packet-Filter-Content AVP携带请求新增 力口 Packet Filter, Flow-Direction AVP设置为 Downlink。 此夕卜, 若操作码为 Create New TFT, 在 CCR 消息中的 Packet-Filter-Operation AVP设置为 " ADDITION " ; 若 Add packet filters to existing TFT , 则 Packet-Filter-Operation AVP 设置为 " ADDITION " , 并额夕卜携 带 Packet-Filter-Information, 其中包括要添力。入的 Packet filter 对应的 Packet-Filter-Identifier , 若操作码为 eplace Packet filters in existing TFT , 贝1 J Packet-Filter-Operation AVP 设置为 " MODIFICATION ", 并额外携带 Packet-Filter-Information , 其 中 包 括 要 Packet filter 对 应 的 Packet-Filter-Identifier。
步骤 1004: 策略决策;
具体地, PCRF保存 Diameter CCR中的信息。 若 PCRF没有相关的签 约, PCRF可能与 SPR交互, 获取签约信息。 PCRF根据签约信息、 PCEF 上报的信息以及自身配置的网络策略进行策略决策, 制定 PCC规则。 对于 PCEF上报的信息中 UE请求新增的 Packet Filter, 虽然这些 Packet Filter只 有下行方向, PCRF在制定的 PCC规则中对应的业务数据流模板 ( Service Data Flow Template, SDF Template ) 的方向为双向, 具体的在 Flow-Information AVP 中 携 带 的 Flow-Direction AVP 取 值 为 BIDIRECTIONAL 0
步骤 1005: 发送 Diameter CCA消息;
具体地, PCRF向 PCEF返回 Diameter CCA消息, 消息中携带制定的
PCC规则;
步骤 1006: 承载绑定;
具体地, PCEF根据 PCC规则中携带的服务质量类别标识(QoS Class Identifier, QCI ) /分配保持优先级( Allocation and Retention Priority, ARP ) 执行承载绑定。 PCEF将 PCC规则中的 SDF Template添加入对应承载的 TFT 中。 其中在 1003步骤中 P-GW收到的请求新增的 Packet Filter为下行, 由 于 SDF template的对应的 Packet Filter时变成双向, 所以 PCEF构造的 TFT 中对应的 Packet Filter也是双向的。
步骤 1007: 发送承载激活请求应答消息 /承载修改请求应答消息; 具体地, P-GW通过 S-GW、 MME、 eNB向 UE返回承载激活请求 /承 载修改请求应答消息, 所述承载激活请求应答消息 /承载修改请求应答消息 中均携带承载相关的 TFT、 QoS,且所述承载激活请求应答消息是对承载激 活请求消息的应答消息, 所述承载修改请求应答消息是对承载激活请求消 息的应答消息。
步骤 1008: UE根据 TFT执行上行数据包过滤及发送;
具体地, UE根据获得的 TFT对上行数据包进行过滤, 尽管 1003中, UE请求的 Packet Filter只有下行方向, 但是在 1007中, 网络给 UE提供的 TFT中的 Packet Filter是双向的, 因此 UE根据该 Packet Filter进行匹配成 功后, 使用该 TFT关联的承载进行上行数据包发送。
步骤 1009: P-GW根据 TFT执行上行数据包过滤及承载校验; 具体地, GGSN根据 TFT对 UE发送上行数据进行承载校验, 并允许 上行数据通过。 若网络不支持 PCC或 PCRF返回的 PCC规则中的 SDF template中相应的 Packet Filter不是双向的, 那么 P-GW将根据本地策略授 权一个对应的 Packet Filter为双向的, 并发送给 UE。
其中, 双向分组过滤器 Packet Filter即过滤器本身是单向的, 但是允许 源地址、 目的地地址交换以及源端口号、 目的地端口号交换的数据通过。
实施例四
本实施例描述 IP-CAN为 EPS,用户设备 UE发起请求增加下行分组过 滤器 Packet Filter, 响应该请求, 生成所述下行分组过滤器和与所述下行分 组过滤器对称的上行分组过滤器的流程, 如图 11所示, 该方法包括: 本发明实施例四中步骤 1101 至步骤 1103 分别——对应于上述步骤 1001至步骤 1003, 因此不再赘述;
步骤 1104: 策略决策;
具体地, PCRF保存 Diameter CCR中的信息。 若 PCRF没有相关的签 约, PCRF可能与 SPR交互, 获取签约信息。 PCRF根据签约信息、 PCEF 上报的信息以及自身配置的网络策略进行策略决策,制定 PCC规则。 PCRF 将 PCC规则 ( PCC规则 1 ) 中包含的 SDF template设置为 UE请求新增的 Packet Filter, 并且设置为下行方向; 同时, PCRF另外生成一个 PCC规则 ( PCC规则 2 ), 其中的 Packet Filter与 UE请求新增的 Packet Filter的源地 址、 目的地地址交换以及源端口号、 目的地端口号交换,并且该 Packet Filter 设置为上行方向。
步骤 1105: 发送 Diameter CCA消息;
具体地, PCRF 将两个 PCC规则通过 Diameter CCA 消息均发送给 PCEF。
步骤 1106: 承载绑定;
具体地, PCEF根据 PCC规则 1和 PCC规则 2中携带的 QCI/ARP执行 承载绑定。 P-GW根据 PCC规则构造 TFT,该 TFT向包含对称的两个 Packet Filter
步骤 1107: 发送承载激活请求应答消息 /承载修改请求应答消息; 具体地, P-GW通过 S-GW、 MME、 eNB向 UE返回承载激活请求应 答消息 /承载修改请求应答消息, 所述承载激活请求应答消息 /承载修改请求 应答消息中均携带承载相关的 TFT、 QoS。
步骤 1108: UE根据 TFT执行上行数据包过滤及发送;
具体地, UE根据获得的 TFT对上行数据包进行过滤, 因此, UE根据 对称的上行过滤器 Packet Filter进行匹配成功后,使用该 TFT关联的承载进 行上行数据包发送。
步骤 1109: P-GW根据 TFT执行上行数据包过滤及承载校验; 具体地, GGSN根据 TFT对 UE发送上行数据进行承载校验, 并允许 上行数据通过。
同样地, 在实施例三和实施例四中, 若网络不支持 PCC、 或 PCRF返 回的 PCC规则中不包含源地址、 目的地地址互换以及源端口号、 目的地端 口号互换的 packet filter的 PCC规则,, 那么 P-GW将根据本地策略制定一 个对称的上行单向的 Packet Filter, 并相应的构造 TFT, 其中向包含对称的 两个 Packet Filter, 发送给 UE。
在实施例四中, PCRF将包含对称的上下行 packet filter的 2个 PCC规 则在应答消息中一并发送给 UE。 PCRF也可以在应答消息中将包含下行单 向的 packet filter的 PCC规则发送给 UE。之后, PCRF还可以通过 Diameter RAR消息将包包含对称的上行单向 packet filter后的 PCC规则 2发送给 PCEF, 之后 P-GW通过更新承载请求消息将添加对称的上行单向 packet filter后的 TFT发送给 UE。
在实施例三和实施例四中, P-GW将包含对称的上下行 acket filter的 TFT在应答消息中一并发送给 UE。 P-GW也可以在应答消息中将包含下行 单向的 packet filter的 TFT发送给 UE。 之后, P-GW还可以通过承载更新 请求消息将添加对称的上行单向 packet filter后的 TFT发送给 UE。
以上实施例三和实施例四中,对于网络制定一个对应的上行单行 Packet Filter的方法, 若 UE请求删除之前增加的下行单向 packet filter时, 上行单 向 Packet Filter也由网络一起删除。
实施例五
本实施例描述 IP-CAN为 EPS, 并且存在 BBERF场景下, UE发起请 求增加下行 Packet Filter, 将所述下行分组过滤器设置为双向的流程, 如图 12所示, 该方法包括:
步骤 1201 : IP-CAN会话建立;
具体地, UE附着到网络, 发起附着流程, 或者 UE发起另外的 PDN 连接建立流程。 IP-CAN会话建立, PCEF与 PCRF建立 Gx会话, BBE F 与 PCRF建立网关控制会话。
步骤 1202: 发送请求承载资源修改消息;
具体地, UE通过 eNodeB、 MME、 等向 S-GW发送请求承载资源修改 消息,消息中携带新增 packet filter请求。具体在消息中携带 Traffic Aggregate Description, 操作码为 Create New TFT、 Add packet filters to existing TFT或 Replace Packet filters in existing TFT, 并且携带一个或多个 Packet filter 0 以 上 Packet Filter的方向均指示为下行。
步骤 1203: 发送 Diameter CC 消息;
具体地, 位于 S-GW的 BBERF向 PCRF发送 Diameter CC 消息, 携 带 Packet-Filter-Information,其中包含 Packet-Filter-Content AVP携带请求新 增力口 Packet Filter, Flow-Direction AVP设置为 Downlink。 此夕卜, 若操作码 为 Create New TFT, 在 CCR消息中的 Packet-Filter-Operation AVP设置为 " ADDITION " ; 若 Add packet filters to existing TFT , 则 Packet-Filter-Operation AVP 设置为 " ADDITION " , 并额夕卜携 带 Packet-Filter-Information, 其中包括要添力。入的 Packet filter 对应的 Packet-Filter-Identifier , 若操作码为 Replace Packet filters in existing TFT, 贝1 J Packet-Filter-Operation AVP 设置为 " MODIFICATION ", 并额外携带 Packet-Filter-Information , 其 中 包 括 要 Packet filter 对 应 的 Packet-Filter-Identifier。
步骤 1204: 策略决策;
具体地, PCRF保存 Diameter CCR中的信息。 若 PCRF没有相关的签 约, PCRF可能与 SPR交互, 获取签约信息。 PCRF根据签约信息、 PCEF 上报的信息以及自身配置的网络策略进行策略决策, 制定 PCC规则以及对 应的 QoS规则。对于 PCEF上报的信息中 UE请求新增的 Packet Filter,虽然 这些 Packet Filter只有下行方向, PCRF在制定的 PCC规则 /QoS规则中对 应的业务数据流模板(Service Data Flow Template, SDF Template ) 的方向 为双向, 具体的在 Flow-Information AVP中携带的 Flow-Direction AVP取值 为 BIDIRECTIONAL
步骤 1205: 发送 Diameter CCA消息;
具体地, PCRF向 BBERF返回 Diameter CCA消息, 消息中携带制定的 QoS规则。
步骤 1206: 承载绑定;
具体地, BBERF根据 QoS规则中携带的 QCI/ARP执行承载绑定。 BBE F将 QoS规则中的 SDF Template添加入对应承载的 TFT中。 其中, 在 S 1203中 S-GW收到的请求新增的 Packet Filter为下行,由于 SDF template 的对应的 Packet Filter变成双向, 所以 BBERF构造的 TFT中对应的 Packet Filter也是双向的。
步骤 1207: 发送承载激活请求应答消息 /承载修改请求应答消息; 具体地, S-GW通过 MME、 eNB向 UE返回承载激活请求 /承载修改请 求的应答消息, 携带承载相关的 TFT、 QoS。
步骤 1208:发送 Diameter 重授权请求( Re-Authorization Request, RAR ) 消息;
具体地, PCRF通过 Diameter RAR消息向 PCEF发送 PCC规则, 换句 话说, 所述 Diameter RAR消息携带有 PCC规则。
步骤 1209:发送 Diameter 重授权应答( Re-Authorization Answer, RAA ) 消息; 具体地, PCEF向 PCRF发送 Diameter RAA消息, 以进行确认。
步骤 1210: UE根据 TFT执行上行数据包过滤及发送;
UE根据获得的 TFT对上行数据包进行过滤, 尽管 1203 中, UE请求 的 Packet Filter只有下行方向,但是在步骤 1207中, 网络给 UE提供的 TFT 中的 Packet Filter是双向的, 因此 UE根据该 Packet Filter进行匹配成功后, 使用该 TFT关联的承载进行上行数据包发送。
步骤 1211 : S-GW根据 TFT执行上行数据包过滤及承载校验; 具体地, S-GW根据 TFT对 UE发送上行数据进行承载校验, 并允许 上行数据通过。 的 Packet Filter不是双向的, 那么 S-GW将根据本地策略授权一个对应的 Packet Filter为双向的, 并发送给 UE。
所谓双向 Packet Filter即一个过滤器本身是单向的, 但是允许源地址、 目的地地址相反交换以及源端口号、 目的地端口号交换的数据通过。
实施例六
本实施例描述 IP-CAN为 EPS,用户设备 UE发起请求增加下行分组过 滤器 Packet Filter, 响应该请求, 生成所述下行分组过滤器和与所述下行分 组过滤器对称的上行分组过滤器的流程, 如图 13所示, 包括:
本发明实施例六中步骤 1301 至步骤 1303 分别——对应于上述步骤 1201至步骤 1203, 因此不再赘述。
步骤 1304: 策略决策;
具体地, PCRF保存 Diameter CCR中的信息。 若 PCRF没有相关的签 约, PCRF可能与 SPR交互, 获取签约信息。 PCRF根据签约信息、 PCEF 上报的信息以及自身配置的网络策略进行策略决策,制定 PCC规则。 PCRF 将 PCC/QoS规则 ( PCC规则 1/PCC规则 2 ) 中包含的 SDF template设置为 UE请求新增的 Packet Filter, 并且设置为下行方向; 同时, PCRF另外生成 一个 PCC/QoS规则 ( PCC规则 2/QoS规则 2 ), 其中的 Packet Filter与 UE 请求新增的 Packet Filter的源地址、 目的地地址交换以及源端口号、 目的地 端口号交换, 并且该 Packet Filter设置为上行方向。
步骤 1305: 发送 Diameter CCA消息;
具体地, PCRF向 BBERF返回 Diameter CCA消息, 消息中携带制定的 QoS规则 1和 QoS规则 2。
步骤 1306: 承载绑定;
具体地, BBERF根据 QoS规则中携带的 QCI/ARP执行承载绑定。 S-GW 根据 QoS规则构造 TFT, 该 TFT向包含对称的两个 Packet Filter。
步骤 1307: 发送承载激活请求应答消息 /承载修改请求应答消息; 具体地, S-GW通过 MME、 eNB向 UE返回承载激活请求应答消息 / 承载修改请求应答消息, 所述承载激活请求应答消息 /承载修改请求应答消 息中均携带承载相关的 TFT、 QoS。
步骤 1308: 发送 Diameter AR消息;
具体地, PCRF向 PCEF发送 Diameter RAR消息, 所述 Diameter RAR 消息中携带有 PCC规则 1和 PCC规则 2。
步骤 1309: 发送 Diameter AA消息;
具体地, PCEF向 PCRF返回 Diameter RAA消息, 以进行确认。
步骤 1310: UE根据 TFT执行上行数据包过滤及发送;
具体地, UE根据获得的 TFT对上行数据包进行过滤, UE根据对称的 上行过滤器 Packet Filter进行匹配成功后,使用该 TFT关联的承载进行上行 数据包发送。
步骤 1311 : S-GW根据 TFT执行上行数据包过滤及承载校验; 具体地, S-GW根据 TFT对 UE发送上行数据进行承载校验, 并允许 上行数据通过。
同样地, 在实施例五和实施例六中, 若网络不支持 PCC、 或 PCRF返 回的 PCC/Qos规则中不包含源地址、 目的地地址互换以及源端口号、 目的 地端口号互换的 packet filter的 PCC/QoS规则, 那么 QoS将根据本地策略 制定一个对称的上行单向的 Packet Filter, 并相应的构造 TFT, 其中向包含 对称的两个 Packet Filter, 发送给 UE。
在实施例六中, PCRF将包含对称的上下行 packet filter的 2个 QoS规 则在应答消息中一并发送给 UE。 PCRF也可以在应答消息中将包含下行单 向的 packet filter的 QoS规则发送给 UE。之后, PCRF还可以通过 Diameter RAR消息将包包含对称的上行单向 packet filter后的 QoS规则 2发送给 PCEF, 之后 S-GW通过更行承载请求消息将添加对称的上行单向 packet filter后的 TFT发送给 UE。
在以上实施例五和实施例六中, S-GW将包含对称的上下行 packet filter 的 TFT在应答消息中一并发送给 UE。 S-GW也可以在应答消息中将包含下 行单向的 packet filter的 TFT发送给 UE。 之后, S-GW还可以通过承载更 新请求消息将添加对称的上行单向 packet filter后的 TFT发送给 UE。
以上, 对于网络制定一个对应的上行单行 Packet Filter的方法, 若 UE 请求删除之前增加的下行单向 packet filter时,上行单向 Packet Filter也由网 络一起删除。
本发明实施例提供的策略控制装置中的接收模块、 设置模块、 生成模 块和发送模块, 以及各模块自身所包括的单元, 都可以通过网关设备中的 处理器来实现; 当然也可通过具体的逻辑电路实现; 在具体实施例的过程 中, 处理器可以为中央处理器 (CPU )、 微处理器 (MPU )、 数字信号处理 器(DSP )或现场可编程门阵列 (FPGA )等。
本发明实施例中, 如果以软件功能模块的形式实现上述的策略控制方 法, 并作为独立的产品销售或使用时, 也可以存储在一个计算机可读取存 储介质中。 基于这样的理解, 本发明实施例的技术方案本质上或者说对现 有技术做出贡献的部分可以以软件产品的形式体现出来, 该计算机软件产 品存储在一个存储介质中, 包括若干指令用以使得一台计算机设备(可以 是个人计算机、 服务器、 或者网络设备等)执行本发明各个实施例所述方 法的全部或部分。 而前述的存储介质包括: U盘、 移动硬盘、 只读存储器 ( ROM, Read Only Memory ),磁碟或者光盘等各种可以存储程序代码的介 质。 这样, 本发明实施例不限制于任何特定的硬件和软件结合。
相应地, 本发明实施例再提供一种计算机可读存储介质, 所述计算机 可读存储介质中存储有计算机可执行指令, 所述计算机可执行指令用于执 行上述的策略控制方法。
以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于 本领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精 神和原则之内所作的任何修改、 等同替换、 改进等, 均应包含在本发明的 保护范围之内。 工业实用性
本发明实施例中, 先接收用户设备增加下行分组过滤器的请求; 然后 响应所述请求, 将所述下行分组过滤器设置为双向; 和 /或, 生成所述下行
到了避免因 UE在错误的承载上发送上行数据而被网络丟包效果。

Claims

权利要求书
1、 一种策略控制方法, 所述方法包括:
接收用户设备增加下行分组过滤器的请求;
响应所述请求, 将所述下行分组过滤器设置为双向; 和 /或,
生成所述下行分组过滤器和与所述下行分组过滤器对称的上行分组过
, 和对应的上行数据。
2、 根据权利要求 1所述的方法, 其中, 所述上行数据包括: 源地址、 目标地址与所述下行数据互换, 并且源端口号、 目的端口号与所述下行数 据互换的数据。
3、 根据权利要求 1或 2所述的方法, 其中, 所述方法还包括: 在将所述下行分组过滤器设置为双向的情况下, 向所述用户设备发送 设置为双向的所述下行分组过滤器; 或者,
在生成所述下行分组过滤器和所述上行分组过滤器的情况下, 向所述 用户设备发送所述上行分组过滤器。
4、 根据权利要求 1所述的方法, 其中, 在网络支持 PCC的情况下, 所 述将所述下行分组过滤器设置为双向, 包括:
策略和计费执行功能 PCEF位于的第一网关或承载绑定和事件报告功 能 BBERF位于的第二网关向策略和计费规则功能 PCRF发送所述请求; 所述第一网关或所述第二网关接收所述 PCRF对所述请求的响应; 所述第一网关或所述第二网关根据对应的本地策略和 /或所述响应将所 述下行分组过滤器设置为双向。
5、 根据权利要求 4所述的方法, 其中, 所述第一网关或所述第二网关 根据对应的本地策略和 /或所述响应将所述下行分组过滤器设置为双向, 包 括:
在所述响应中携带有将所述下行分组过滤器为双向的指示的情况下, 所述第一网关或所述第二网关根据所述指示将所述下行分组过滤器设置为 双向;
在所述响应中未携带所述指示的情况下, 所述第一网关或所述第二网 关根据对应的本地策略设置所述下行分组过滤器为双向。
6、 根据权利要求 5所述的方法, 其中, 所述方法还包括: 在所述响应 中未携带所述指示的情况下,
所述第一网关或所述第二网关判断所述响应中是否携带有所述上行分 组过滤器的信息;
如果否, 所述第一网关或所述第二网关根据对应的本地策略设置所述 下行分组过滤器为双向。
7、 根据权利要求 4至 6任一项所述的方法, 其中, 所述第一网关根据 所述指示将所述下行分组过滤器设置为双向包括:
所述第一网关接收所述策略和计费控制 PCC规则, 其中, 所述 PCC规 则中设置有对应的业务数据流模板 SDF Template, 且所述 SDF Template的 方向为双向;
所述第一网关根据所述 PCC或 QoS规则中的 SDF template构造业务流 模板 TFT, 得到包含分组过滤器为双向的 TFT。
8、 根据权利要求 4至 6任一项所述的方法, 其中, 所述第二网关根据 所述指示将所述下行分组过滤器设置为双向, 包括:
所述第二网关接收所述 PCRF制定的服务质量 QoS规则, 其中, 所述 QoS 规则中设置有对应的业务数据流模板 SDF Template , 且所述 SDF Template的方向为双向; 所述第二网关根据所述 QoS规则中的 SDF template构造所述 TFT, 得 到包含分组过滤器为双向的 TFT。
9、 根据权利要求 4所述的方法, 其中, 所述方法还包括:
在网络不支持 PCC的情况下, 所述第一网关或所述第二网关根据本地 策略将所述下行分组过滤器设置为双向。
10、 根据权利要求 1所述的方法, 其中, 在网络支持 PCC的情况下, 所述生成所述下行分组过滤器和与所述下行分组过滤器对称的上行分组过 滤, 包括:
PCEF位于的第一网关或 BBERF位于的第二网关向 PCRF发送所述请 求;
所述第一网关或所述第二网关接收所述 PCRF对所述请求的响应, 其 中所述响应包含所述下行分组过滤器和所述上行分组过滤器的信息;
所述第一网关或所述第二网关根据所述信息生成所述下行分组过滤器 和所述上行分组过滤器。
11、根据权利要求 10所述的方法,其中,所述第一网关接收所述 PCRF 对所述请求的响应, 包括:
所述第一网关接收所述 PCRF根据所述请求制定的第一 PCC 和第二 PCC规则;
其中, 所述第一 PCC规则中包含第一 SDF Template, 且所述第一 SDF Template中包含所述下行分组过滤器; 所述第二 PCC规则中包含第二 SDF Template, 且所述第二 SDF Template中包含所述上行分组过滤器;
对应地, 所述第一网关根据所述信息生成所述下行分组过滤器和所述 上行分组过滤器包括: 所述第一网关根据所述第一 PCC 规则和所述第二 PCC规则构造 TFT, 得到包含所述下行分组过滤器和所述上行分组过滤器 的 TFT。
12、根据权利要求 10所述的方法,其中,所述第二网关接收所述 PCRF 对所述请求的响应, 包括:
所述第二网关接收所述 PCRF根据所述请求制定的第一 QoS规则以及 第二 QoS规则;
其中, 所述第一 QoS规则中包含第一 SDF Template, 且所述第一 SDF Template中包含所述下行分组过滤器; 所述第二 QoS规则中包含第二 SDF Template, 且所述第二 SDF Template中包含所述上行分组过滤器;
对应地, 所述第二网关根据所述信息生成所述下行分组过滤器和所述 对称的上行分组过滤器包括: 所述第二网关根据所述第一 QoS规则以及所 述第二 QoS规则构造 TFT, 得到包含所述下行分组过滤器以及所述上行分 组过滤器。
13、 根据权利要求 10至 12中任一项所述的方法, 其中, 所述方法还 包括:
在网络不支持 PCC的情况下, 所述第一网关或所述第二网关根据本地 策略生成所述下行分组过滤器和所述上行分组过滤器。
14、 一种策略控制装置, 所述装置包括接收模块、 设置模块和生成模 块, 其中:
所述接收模块, 配置为接收用户设备增加下行分组过滤器的请求; 所述设置模块, 配置为响应所述请求, 将所述下行分组过滤器设置为 据和对应的上行数据; 和 /或
所述生成模块, 配置为响应所述请求, 生成所述下行分组过滤器和与
15、根据权利要求 14所述的装置, 其中, 所述上行数据包括: 源地址、 目标地址与所述下行数据互换, 并且源端口号、 目的端口号与所述下行数 据互换的数据。
16、 根据权利要求 14或 15所述的装置, 其中, 所述装置还包括发送 模块, 配置为在将所述下行分组过滤器设置为双向的情况下, 向所述用户 设备发送设置为双向的所述下行分组过滤器; 或者
配置为在生成所述下行分组过滤器和所述上行分组过滤器的情况下, 向所述用户设备发送所述上行分组过滤器。
17、 根据权利要求 14所述的装置, 其中, 在网络支持 PCC的情况下, 所述设置模块包括发送单元、 接收单元和设置单元, 其中:
所述发送单元, 配置为向策略和计费规则功能 PCRF发送所述请求; 所述接收单元, 配置为接收所述 PCRF对所述请求的响应; 分组过滤器设置为双向。
18、 根据权利要求 17所述的装置, 其中, 所述设置单元, 配置为在所 述响应中携带有将所述下行分组过滤器为双向的指示的情况下, 根据所述 指示将所述下行分组过滤器设置为双向; 以及在所述响应中未携带所述指 示的情况下, 根据对应的本地策略设置所述下行分组过滤器为双向。
19、 根据权利要求 18所述的装置, 其中, 所述设置单元还包括判断单 元, 配置为在所述响应中未携带所述指示的情况下, 判断所述响应中是否 携带有所述上行分组过滤器的信息;
对应地, 所述设置单元, 还配置为在没有所述上行分组过滤器的信息 的情况下, 根据对应的本地策略设置所述下行分组过滤器为双向。
20、 根据权利要求 17至 19任一项所述的装置, 其中,
所述接收单元, 配置为接收所述策略和计费控制 PCC规则, 其中, 所 述 PCC规则中设置有对应的业务数据流模板 SDF Template, 且所述 SDF Template的方向为双向; 所述设置单元,配置为根据所述 PCC或 QoS规则中的 SDF template构 造业务流模板 TFT, 得到包含分组过滤器为双向的 TFT。
21、 根据权利要求 17至 19任一项所述的装置, 其中,
所述接收单元, 配置为接收所述 PCRF制定的服务质量 QoS规则, 其 中, 所述 QoS规则中设置有对应的业务数据流模板 SDF Template, 且所述 SDF Template的方向为双向;
所述设置单元, 配置为根据所述 QoS规则中的 SDF template构造所述 TFT, 得到包含分组过滤器为双向的 TFT。
22、 根据权利要求 17所述的装置, 其中, 所述设置模块, 还配置为在 网络不支持 PCC的情况下, 根据本地策略将所述下行分组过滤器设置为双 向。
23、 根据权利要求 14所述的装置, 其中, 在网络支持 PCC的情况下, 所述生成模块包括发送单元、 接收单元和生成单元, 其中:
所述发送单元, 配置为向 PCRF发送所述请求;
所述接收单元, 配置为接收所述 PCRF对所述请求的响应, 其中所述 响应包含所述下行分组过滤器和所述上行分组过滤器的信息;
所述生成单元, 配置为根据所述信息生成所述下行分组过滤器和所述 上行分组过滤器。
24、 根据权利要求 23所述的装置, 其中, 所述接收单元, 配置为根据 所述请求制定的第一 PCC以及第二 PCC规则, 其中, 所述第一 PCC规则 中包含第一 SDF Template, 且所述第一 SDF Template中包含所述下行分组 过滤器; 所述第二 PCC规则中包含第二 SDF Template, 且所述第二 SDF Template中包含所述上行分组过滤器;
所述生成单元, 配置为根据所述信息生成所述下行分组过滤器和所述 上行分组过滤器包括: 所述第一网关根据所述第一 PCC规则以及所述第二 PCC规则构造 TFT, 得到包含所述下行分组过滤器和所述上行分组过滤器 的 TFT。
25、 根据权利要求 23所述的装置, 其中, 所述接收单元, 配置为接收 所述 PCRF根据所述请求制定的第一 QoS规则以及第二 QoS规则, 其中, 所述第一 QoS规则中包含第一 SDF Template, 且所述第一 SDF Template中 包含所述下行分组过滤器; 所述第二 QoS规则中包含第二 SDF Template, 且所述第二 SDF Template中包含所述上行分组过滤器;
所述生成单元, 配置为根据所述第一 QoS规则以及所述第二 QoS规则
26、 根据权利要求 23至 25中任一项所述的装置, 其中, 所述生成模 块, 还配置为在网络不支持 PCC的情况下, 根据本地策略生成所述下行分 组过滤器和所述上行分组过滤器。
27、 一种网关设备, 包括策略和计费执行功能 PCEF, 其中, 所述网关 设备还包括权利要求 14至 22中任一项所述的装置。
28、 一种网关设备, 包括承载绑定和事件上报功能 BBERF, 其中, 所 述网关设备还包括权利要求 14、 23至 26中任一项所述的装置。
29、 一种计算机可读存储介质, 所述计算机可读存储介质中存储有计 算机可执行指令, 所述计算机可执行指令用于执行权利要求 1至 13任一项 所述的策略控制方法。
PCT/CN2014/079195 2013-11-11 2014-06-04 一种策略控制方法及装置、网关设备、存储介质 WO2014183716A1 (zh)

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