WO2012088716A1 - Procédé de déplacement de flux ip (internet protocol), fonction d'imputation et de règles (pcrf) et fonction de recherche et de sélection de réseau d'accès (andsf) - Google Patents

Procédé de déplacement de flux ip (internet protocol), fonction d'imputation et de règles (pcrf) et fonction de recherche et de sélection de réseau d'accès (andsf) Download PDF

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Publication number
WO2012088716A1
WO2012088716A1 PCT/CN2010/080633 CN2010080633W WO2012088716A1 WO 2012088716 A1 WO2012088716 A1 WO 2012088716A1 CN 2010080633 W CN2010080633 W CN 2010080633W WO 2012088716 A1 WO2012088716 A1 WO 2012088716A1
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WO
WIPO (PCT)
Prior art keywords
flow
access network
pcrf
policy
information
Prior art date
Application number
PCT/CN2010/080633
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English (en)
Chinese (zh)
Inventor
许晓茹
李欢
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201080006373.XA priority Critical patent/CN103392363B/zh
Priority to PCT/CN2010/080633 priority patent/WO2012088716A1/fr
Publication of WO2012088716A1 publication Critical patent/WO2012088716A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/66—Policy and charging system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/34—Modification of an existing route

Definitions

  • the present invention relates to the field of network communication technologies, and in particular, to an IP flow moving method, a PCRF (Policy and Charging Rules Function for a service data flow and an IP bearer resource), and an ANDSF (Access Network Discovery and Selection Function) , access network discovery and selection unit).
  • IP flow moving method Policy and Charging Rules Function for a service data flow and an IP bearer resource
  • ANDSF Access Network Discovery and Selection Function
  • the UE User Equipment
  • 3GPP 3GPP network, generally referred to as mobile network
  • BBF BBF network, generally referred to as fixed network
  • the IP flows established by the UE can be implemented from one access technology network to another. Move into the technology network.
  • the IP flow refers to a service data flow of different service types performed on the UE.
  • the UE may actively initiate a binding update message to the PDN GW, where the IP flow information and the specified network information that need to be moved are specified, and after receiving the message, the PDN GW receives the message.
  • the IP stream can be moved.
  • the home PDN GW of the UE supports the DSMIPv6 protocol, but the roaming destination PDN of the UE The GW does not support the DSMIPv6 protocol, etc. In such a case, the movement of the IP stream cannot be achieved.
  • the embodiment of the present invention provides an IP flow moving method, a PCRF, and an ANDSF, which can implement IP flow movement in a scenario that does not support the DSMIPv6 protocol.
  • An embodiment of the present invention provides a method for moving an IP stream, including:
  • the policy and charging control decision unit of the service data flow and the IP bearer resource obtains the corresponding information of the IP flow and the designated access network;
  • the PCRF Determining, according to the IP flow and the corresponding information of the designated access network, an access network that modifies the IP flow; the PCRF sending an access network binding modification request of the IP flow to the mobile network gateway PDN GW, the request Include the IP flow and information of the designated access network;
  • An embodiment of the present invention further provides another IP flow moving method, including:
  • the ANDSF sends an IP flow movement indication message and/or an IP flow policy to the PCRF, where the IP flow movement indication message and the IP flow policy both contain corresponding information of the IP flow and the designated access network, so that the PCRF is configured according to the Determining, by the corresponding information of the IP flow and the designated access network, an access network that modifies the IP flow, sending an access network binding modification request of the IP flow to the PDN GW, and receiving a response returned by the PDN GW;
  • the embodiment of the invention further provides a PCRF, including:
  • An information acquiring unit configured to obtain corresponding information of an IP flow and a designated access network
  • a modification determining unit configured to determine, according to the IP flow and the corresponding information of the designated access network, an access network that modifies the IP flow
  • a requesting unit configured to send an access network binding modification request of the IP flow to the PDN GW, where the request includes the information about the IP flow and the designated access network;
  • the response receiving unit is configured to receive a response returned by the PDN GW.
  • An embodiment of the present invention further provides an ANDSF, including:
  • An information sending module configured to send an IP flow movement indication message and/or an IP flow policy to the PCRF, where the IP flow movement indication message and the IP flow policy both include an IP flow and corresponding information of the designated access network, And causing the PCRF to determine, according to the IP stream and corresponding information of the designated access network, an access network that modifies the IP flow, send an access network binding modification request of the IP flow to the PDN GW, and receive the PDN.
  • a feedback receiving module configured to receive feedback information sent by the PCRF, and send the feedback information
  • the information is sent to the UE, and the feedback information includes information about the IP flow and the modified access network.
  • the specified access network information of the IP flow is obtained by the PCRF, and the IP flow movement process is initiated by the PCRF, so that the PDN GW modifies the access network of the IP flow, and the IP flow is realized between different access networks.
  • the movement is performed by the PCRF.
  • FIG. 1 is a flow chart of a method for moving an IP stream according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another IP flow moving method according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of another IP flow moving method according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of another IP flow moving method according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of another IP flow moving method according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a PCRF according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural view of another PCRF according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural view of another PCRF according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural view of another PCRF according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of an ANDSF according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of another ANDSF according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of another ANDSF according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of another ANDSF according to an embodiment of the present invention. detailed description
  • FIG. 1 is a flowchart of a method for moving an IP stream according to an embodiment of the present invention.
  • the method can include:
  • Step 101 The PCRF obtains corresponding information of the IP flow and the designated access network.
  • the PCRF obtains the corresponding information of the IP flow and the specified access network in multiple manners, and may statically configure multiple IP flows and access network information corresponding to each IP flow in the PCRF in advance;
  • the PDN GW or the ANDSF is sent to the PCRF through an IP flow mobility indication message, and may also be sent by the ANDSF to the PCRF through an IP flow policy.
  • IP flow mobility indication message may also be sent by the ANDSF to the PCRF through an IP flow policy.
  • Step 102 Determine, according to the IP flow and the corresponding information of the designated access network, an access network that modifies the IP flow.
  • the PCRF may further determine whether to modify the access network of the IP flow. For example, the corresponding information may be verified by an IP flow policy. If the corresponding information is correct, it is determined that the access network of the IP flow needs to be modified. If not, the modification is not performed.
  • the current access network and the designated access network of the IP flow may be compared according to the corresponding information, and when the current access network is different from the designated access network, the access network that needs to modify the IP flow may be determined. If they are consistent, no modification is required.
  • Step 103 The PCRF sends an access network binding modification request of the IP flow to the PDN GW.
  • the IP flow is triggered, and the PCRF requests the PDN GW to modify the binding relationship between the IP flow and the access network, and the request may include the access network of the IP flow. Change to the information of the specified access network.
  • the PDN GW acts as a mobility anchor, and different access networks eventually access it.
  • Step 104 Receive a response returned by the PDN GW.
  • the PDN GW modifies the access network of the IP to the designated access network, and returns a response to the PCRF to indicate that the movement of the IP flow between the access networks is completed.
  • the process of modifying the access network by the PDN GW is a prior art, and details are not described herein again.
  • the PCRF may also send the IP flow and the modified access network information to the UE through the ANDSF, so that the UE locally modifies the binding relationship between the IP flow and the access network.
  • the specified access network information of the IP flow is obtained by the PCRF, and the IP flow movement process is initiated by the PCRF, so that the PDN GW modifies the access network of the IP flow, and the IP flow is realized between different access networks.
  • the movement Referring to FIG. 2, it is a flowchart of another IP flow moving method according to an embodiment of the present invention.
  • the UE has established a PDN connection on the 3GPP network, and the PDN connection can be accessed by both the 3GPP network and the BBF network. And the DSMIPv6 mobile protocol supporting IP flow mobility is not adopted between the UE and the PGW.
  • the UE has currently established one or more service data flows (IP flows). There is a signaling interface between the ANDSF and the PCRF. The UE has already registered to the ANDSF.
  • the PCRF has the capability of performing IP flow movement, and the capability may be statically configured to the PCRF in advance, for example, adding a module in the PCRF to save and maintain the policy. It is configured and maintained by the operator according to the network planning or operation and maintenance management; or the user's subscription information includes the feature that allows the PCRF to perform IP flow movement.
  • the IPF policy is also statically configured in advance on the PCRF. Specifically, it can be configured by the operator in the relevant information table of the PCRF.
  • the IP flow policy can include IP flow characteristics (for example, quintuple information, communication protocol type, source). IP, destination IP, source port number, destination port number) and access network information.
  • the IP flow may be moved.
  • the method for moving the IP flow in this embodiment may include: Step 201, PCRF according to The IP flow policy judges the access network information of the IP flow on the UE.
  • the PCRF learns the current access network information of the IP flow between the UE and the IP network (on the IP-CAN session), and then compares with the access network information corresponding to the IP flow in the IP flow policy, if the two access network information Different, that is, the current access network of the IP flow is not the access network specified in the IP flow policy, and the PCRF performs the movement between the access networks of the IP flow, and proceeds to step 202; if the information of the two access networks is the same, Then the IP stream is not triggered to move.
  • Step 202 The PCRF sends an IP flow access network binding modification request to the PDN GW.
  • the PCRF can initiate the binding modification request. Specifically, the PCRF may send, according to the specified access network information of the IP flow in the IP flow policy, a request to the PDN GW to modify the current access network of the IP flow to the designated access network, that is, the IP flow access network is bound.
  • the modification request is determined, and the request includes at least specified access network information of the IP flow.
  • Step 203 The PCRF receives the request response information of the PDN GW.
  • the PDN GW modifies the access network of the IP flow to the access network specified in the request. Then, the request response information is fed back to the PCRF.
  • Step 204 The PCRF sends an IP flow movement indication message to the UE through the ANDSF. After the PCRF receives the request response information, it indicates that the access network movement of the IP flow has been completed, and then the PCRF may send an IP flow movement indication message to the ANDSF through the signaling interface between the PCRF and the ANDSF, including the moved IP flow and access network information after the move.
  • the ANDSF may forward the IP flow movement indication message to the UE, and after receiving the message, the UE may locally update the binding relationship between the IP flow corresponding to the IP and the access network.
  • the PCRF is configured to perform the IP flow movement
  • the IP flow policy on the PCRF is configured, so that the PCRF can determine the IP flow access network information on the UE, and further interact with the information of the PDN GW through the PCRF.
  • the binding relationship between the IP flow and the access network is modified, thereby realizing the movement of the IP flow.
  • FIG. 3 it is a flowchart of another IP flow moving method according to an embodiment of the present invention.
  • the UE has established a PDN connection on the 3GPP network, and the PDN connection can be simultaneously accessed by the 3GPP network and the BBF network. And the DSMIPv6 mobile protocol supporting IP flow mobility is not adopted between the UE and the PGW.
  • the UE has currently established one or more service data streams. There is a signaling interface between the ANDSF and the PCRF. The UE has already registered to the ANDSF.
  • the PCRF initiates an IP flow movement process according to a message sent by the PDN GW.
  • the IP flow policy on the PCRF can be pre-statically configured or acquired in advance or temporarily.
  • the IP flow may be moved.
  • the method for moving the IP flow in this embodiment may include: Step 301, PCRF receiving The message sent by the PDN GW.
  • the PDN GW sends a message to the PCRF, where the message may be an IP flow move indication message, that is, a message authorizing or instructing the PCRF to perform IP flow movement, such as an IP-CAN session establishment flow message, a Modification flow message, and the message may include moving The IP flow and the specified access network information; the message may also be a message containing the type of mobile protocol used by the user.
  • IP flow move indication message that is, a message authorizing or instructing the PCRF to perform IP flow movement, such as an IP-CAN session establishment flow message, a Modification flow message, and the message may include moving The IP flow and the specified access network information; the message may also be a message containing the type of mobile protocol used by the user.
  • the PCRF may verify whether the IP stream to be moved and the specified access network information in the message are correct according to the IP flow policy, if correct And performing the movement from the current access network to the designated access network to the IP flow on the UE side.
  • the PCRF determines whether the UE supports IP flow movement according to the protocol type. If not, the PCRF needs to perform IP flow movement on the IP flow that needs to be moved on the UE side according to the IP flow policy.
  • the PCRF is pre-configured with the ability to perform IP flow movement. If the received protocol type is that the UE does not support flow movement, the IPF moves by the PCRF.
  • step 304 the process proceeds directly to step 304. If not, the process proceeds to steps 302 and 303 to obtain an IP flow policy, and then step 304 is performed.
  • Step 302 The PCRF requests an IP flow policy from the ANDSF.
  • Step 303 The PCRF receives the IP flow policy sent by the ANDSF.
  • Step 304 The PCRF determines whether to perform IP flow movement according to the IP flow policy.
  • the PCRF receives an authorization or instructs the PCRF to perform a message to move the IP stream, the PCRF is based on
  • the IP flow policy verifies whether the IP stream to be moved and the specified access network information in the message are correct. If yes, go to step 305.
  • the step is similar to the step 201 in the foregoing embodiment, if the IP address needs to be performed on an IP flow. If the stream moves, the process proceeds to step 305.
  • Step 305 The PCRF sends an IP flow access network binding modification request to the PDN GW.
  • the PCRF sends a request to the PDN GW to modify the current access network of the IP flow to the designated access network according to the specified access network information of the IP flow to be moved, that is, the IP flow access network binding modification request, the request.
  • the at least the IP flow and its designated access network information are included.
  • Step 306 The PCRF receives the request response information of the PDN GW.
  • Step 307 The PCRF sends an IP flow movement indication message to the UE through the ANDSF.
  • the steps 304 to 307 are similar to the steps 201 to 204 in the foregoing embodiment, and are not described herein again.
  • the UE may locally update the binding relationship between the IP flow corresponding to the IP and the access network at the UE.
  • the PDN GW sends a message to the PCRF, and the PCRF performs the IP flow movement, and the PCRF dynamically obtains the IP flow policy, so that the PCRF can determine the IP flow access network information on the UE, and then pass the PCRF and the PDN GW.
  • Information interaction modifying the binding relationship between the IP flow and the access network, thereby realizing the movement of the IP flow.
  • FIG. 4 it is a flowchart of another IP flow moving method according to an embodiment of the present invention.
  • the UE has established a PDN connection on the 3GPP network, and the PDN connection can be simultaneously accessed by the 3GPP network and the BBF network.
  • the DSMIPv6 mobile protocol supporting IP flow mobility is not adopted between the UE and the PGW.
  • the UE has currently established one or more service data streams.
  • the UE has already registered to the ANDSF.
  • the PCRF initiates the IP flow movement process according to the message sent by the ANDSF.
  • the IP flow policy on the PCRF can be pre-statically configured or pre- or temporarily acquired.
  • the IP flow may be moved.
  • the method for moving the IP flow in this embodiment may include: Step 401, ANDSF
  • the UE delivers an IP mobility policy.
  • Step 402 After receiving the mobility policy, the UE sends a message to the ANDSF if the current mobility protocol of the UE does not support IP flow mobility.
  • the message may include information of the IP flow and information of the specified access network to authorize or instruct the ANDSF to perform IP flow movement; or the message may directly include the current mobility protocol type of the UE.
  • Step 403 The ANDSF sends an IP flow policy and an IP flow move indication to the PCRF.
  • the ANDSF may directly send the message content and the IP flow policy to the PCRF to instruct the PCRF to perform IP according to the content of the message. Flow moves.
  • the ANDSF may directly send the mobility protocol type and the IP flow policy to the PCRF.
  • Step 404 The PCRF determines whether to perform IP flow movement according to the IP flow policy.
  • the PCRF receives the authorization or instructs the PCRF to perform the IP flow movement, the PCRF verifies whether the IP flow to be moved and the specified access network information in the message are correct according to the IP flow policy. If yes, go to step 405.
  • the step is similar to the step 201 in the foregoing embodiment, if the IP address needs to be performed on an IP flow. If the stream moves, the process proceeds to step 405.
  • Step 405 The PCRF sends an IP flow access network binding modification request to the PDN GW.
  • the PCRF sends the IP to the PDN GW according to the specified access network information of the IP stream that needs to be moved.
  • the current access network of the flow is modified to the request of the specified access network, that is, the IP flow access network binding modification request, and the request includes at least the specified access network information of the IP flow.
  • Step 406 The PCRF receives the request response information of the PDN GW.
  • Step 407 The PCRF sends an IP flow movement indication response message to the UE through the ANDSF.
  • the indication response message sent by the PCRF to the ANSDF may include whether the IP flow movement is successful and the IP flow is included. Access network information after the move. The message is forwarded by the ANSDF to the UE.
  • the indication response message sent by the PCRF to the ANSDF may include the moved IP flow and the moved access network information. .
  • the message is forwarded by the ANSDF to the UE.
  • the UE may locally update the binding relationship between the IP flow corresponding to the IP and the access network at the UE.
  • the embodiment of the present invention sends a message to the PCRF through the ANDSF, performs IP flow movement by the PCRF, and sends an IP flow policy to the PCRF by the ANDSF, so that the PCRF can judge the IP flow access network information on the UE, and further pass the PCRF and the PDN GW.
  • the information exchange modifying the binding relationship between the IP flow and the access network, thereby realizing the movement of the IP flow.
  • FIG. 5 it is a flowchart of another IP flow moving method according to an embodiment of the present invention.
  • the UE has established a PDN connection on the 3GPP network, and the PDN connection can be simultaneously accessed by the 3GPP network and the BBF network. And the DSMIPv6 mobile protocol supporting IP flow mobility is not adopted between the UE and the PGW.
  • the UE has currently established one or more service data streams. There is a signaling interface between the ANDSF and the PCRF.
  • Step 501 The UE registers with the ANDSF.
  • the registration message includes the current mobile protocol type of the UE.
  • Step 502 The ANDSF determines, according to the mobile protocol type of the UE, whether the UE supports IP flow movement. The ANDSF determines, according to the type of the mobile protocol, that the UE does not support IP flow movement, and proceeds to step 503.
  • Step 503 The ANDSF sends an IP flow mobility policy to the PCRF.
  • Step 504 The PCRF determines whether to perform IP flow movement according to the IP flow policy.
  • the PCRF learns the current access network information of the IP flow between the UE and the IP network (on the IP-CAN session), and then compares with the access network information corresponding to the IP flow in the IP flow policy, if the two access network information Different, that is, the current access network of the IP flow is not the access network specified in the IP flow policy, and the PCRF performs the movement between the access networks of the IP flow, and proceeds to step 505; if the information of the two access networks is the same, Then the IP stream is not triggered to move.
  • Step 505 The PCRF sends an IP flow access network binding modification request to the PDN GW.
  • the PCRF Since the PCRF has the ability to perform IP flow movement, the PCRF can initiate the binding modification request. Specifically, the PCRF may access the network information according to the specified IP flow in the IP flow policy.
  • the PDN GW sends a request to modify the current access network of the IP flow to the specified access network, that is, the IP flow access network binding modification request, where the request includes at least the specified access network information of the IP flow.
  • Step 506 The PCRF receives the request response information of the PDN GW.
  • the PDN GW modifies the access network of the IP flow to the access network specified in the request. Then, the request response information is fed back to the PCRF.
  • Step 507 The PCRF sends an IP flow movement indication message to the UE through the ANDSF.
  • the PCRF After the PCRF receives the request response information, it indicates that the access network movement of the IP flow has been completed, and then the PCRF may send an IP flow movement indication message to the ANDSF through the signaling interface between the PCRF and the ANDSF, including the moved IP flow and access network information after the move.
  • the ANDSF may forward the IP flow movement indication message to the UE, and after receiving the message, the UE may locally update the binding relationship between the IP flow corresponding to the IP and the access network.
  • the message that the UE registers with the ANDSF includes the type of the mobile protocol supported by the UE, so that the ANDSF can determine whether the UE supports IP flow movement according to the type of the mobile protocol, and sends an IP flow policy to the PCRF when the UE does not support,
  • the PCRF can determine the IP flow access network information on the UE according to the IP flow policy, and then interact with the information of the PDN GW through the PCRF to tamper with the binding relationship between the IP flow and the access network, thereby implementing the IP flow. mobile.
  • the UE if the UE has established a PDN connection in the 3GPP network, and the PDN connection can be simultaneously accessed by the 3GPP network and the BBF network, when the UE initially establishes the binding relationship between the IP flow and the corresponding access network, The following process can be followed: First, when the UE wants to establish an IP flow, the UE sends a service request to the AF to apply for establishing a specific service.
  • the AF sends an authentication authentication request for the UE to apply for a certain PDN connection to the PCRF.
  • the PCRF receives the authentication request, if the PDN is connected to multiple access networks, the PCRF determines, according to the existing IP mobility policy, which access network the UE needs to access.
  • the PCRF sends an authentication authentication response to the AF, where the response includes the corresponding information of the IP flow applied by the UE and the access network.
  • the AF sends the information including the correspondence between the IP stream and the access network to the UE, and the UE establishes a binding relationship between the IP flow and the corresponding access network locally.
  • IP stream moving method is a detailed description of the IP stream moving method according to the embodiment of the present invention.
  • the following describes an apparatus for implementing the above method.
  • FIG. 6 is a schematic structural diagram of a PCRF according to an embodiment of the present invention.
  • the PCRF can include:
  • the information obtaining unit 601 is configured to obtain corresponding information of the IP flow and the designated access network.
  • the modification determining unit 602 is configured to determine, according to the IP flow and the corresponding information of the designated access network, an access network that modifies the IP flow.
  • the modification request unit 603 is configured to send an access network binding modification request of the IP flow to the PDN GW, where the request includes the IP flow and the information of the designated access network.
  • the response receiving unit 604 is configured to receive a response returned by the PDN GW.
  • the information obtaining unit 601 obtains the information corresponding to the IP flow and the specified access network in multiple manners, and may statically configure multiple IP flows and access networks corresponding to the IP flows in the PCRF in advance; It is sent to the PCRF by the PDN GW or the ANDSF through an indication message, and may also be sent by the ANDSF to the PCRF through an IP flow policy.
  • the modification determining unit 602 may determine whether to modify the access network of the IP stream according to the corresponding information, and determine, by the modification determining unit 602, the IP.
  • the IP flow movement can be triggered, and the modification request unit 603 requests the PDN GW to modify the binding relationship between the IP flow and the access network, and after receiving the request, the PDN GW connects the IP.
  • the incoming network is modified to the designated access network, and a response is returned to the response receiving unit 604 to indicate that the IP flow is in the access. The movement between the networks is completed.
  • the embodiment of the present invention obtains the specified access network information of the IP flow by the foregoing unit, and initiates an IP flow movement process, so that the PDN GW modifies the access network of the IP flow, and implements the IP flow between different access networks. mobile.
  • FIG. 7 a schematic structural diagram of another PCRF according to an embodiment of the present invention is shown.
  • the PCRF may include a modification feedback unit 705 in addition to the information acquisition unit 701, the modification determination unit 702, the modification request unit 703, and the response reception unit 704.
  • the modification request unit 703 and the response receiving unit 704 are similar to the modification request unit 603 and the response receiving unit 604 in the foregoing embodiment, and are not described herein again.
  • the information acquiring unit 701 is specifically configured to receive an IP flow movement indication message sent by the PDN GW, where the IP flow movement indication message includes the IP stream and the corresponding information of the designated access network, or receive the IP flow movement indication message sent by the ANDSF.
  • the IP flow mobility indication message includes corresponding information of the IP flow and the designated access network.
  • the modification determining unit 702 is specifically configured to verify, according to the IP flow policy, whether the corresponding information of the IP flow and the designated access network is correct, and if correct, determine the access network that tampers with the IP flow.
  • the IP flow policy is an IP flow policy sent by the PCRF according to the received ANDSF, or an IP flow policy statically configured in the PCRF.
  • the modifying feedback unit 705 is configured to send, by the ANDSF, information including the IP flow and the modified access network to the UE.
  • the information acquisition unit 701 can obtain the corresponding information of the IP flow and the designated access network, and further the IP flow policy sent by the modification determination unit 702 according to the ANDSF, or Statically configuring an IP flow policy in the PCRF to verify whether the corresponding information of the IP flow and the specified access network in the indication message is correct. If yes, determine the access network that modifies the IP flow, and then modify the request unit 703 to The PDNGW sends a binding modification request, and then the response receiving unit 704 receives the modified response message to complete the movement of the IP flow, and the modified feedback unit 705 sends the IP flow and the modified access network to the UE via the ANDSF. information.
  • the specified access network information of the IP flow is obtained by the foregoing unit, and the IP flow movement process is initiated, so that the PDN GW modifies the access network of the IP flow, and the IP flow is different. Access to the movement between networks.
  • FIG. 8 is a schematic structural diagram of another PCRF according to an embodiment of the present invention.
  • the PCRF may include a first receiving unit 806 and a policy applying unit 807 in addition to the information obtaining unit 801, the modification determining unit 802, the modification request unit 803, the response receiving unit 804, and the modification feedback unit 805.
  • the modification request unit 803, the response receiving unit 804, and the modification feedback unit 805 are similar to the modification request unit 703, the response receiving unit 704, and the modified feedback unit 705 in the foregoing embodiments, and are not described herein again.
  • the first receiving unit 806 is configured to receive, before the information acquiring unit 801 obtains the corresponding information of the IP stream and the designated access network, the mobile protocol type supported by the UE in which the IP stream sent by the PDN GW is located.
  • the policy application unit 807 is configured to apply for an IP flow policy to the ANDSF when the mobile protocol type does not support IP flow movement.
  • the information obtaining unit 801 is specifically configured to receive an IP flow policy sent by the ANDSF, where the IP flow policy includes corresponding information of the IP flow and the designated access network.
  • the modification determining unit 802 is specifically configured to learn the current access network of the IP flow, and when the current access network of the IP flow is different from the designated access network corresponding to the IP in the IP flow policy, determine to modify the connection of the IP flow. Network access.
  • the information obtaining unit 801 may obtain the corresponding information of the IP flow and the designated access network from the IP flow policy that is statically configured in the PCRF. In this case, the policy application unit 807 is not required to apply for an IP flow policy to the ANDSF.
  • the policy requesting unit 807 determines the mobile protocol type.
  • the IP flow policy is applied to the ANDSF, and the information acquiring unit is used. 801, the corresponding information of the IP flow and the designated access network in the policy is obtained.
  • the modification determining unit 802 determines that the current access network of the IP flow is different from the designated access network, determining to modify the access network of the IP flow.
  • the modification request unit 803 then initiates a binding modification request to the PDN GW, and then the response receiving unit 804 receives the modification response, and the modification feedback unit 805 transmits the IP flow and the modified access network information to the UE.
  • the specified access network information of the IP flow is obtained by the foregoing unit, and the IP flow is initiated.
  • the mobile process enables the PDN GW to modify the access network of the IP flow, and realizes the movement of the IP flow between different access networks.
  • FIG. 9 is a schematic structural diagram of another PCRF according to an embodiment of the present invention.
  • the PCRF may include a second receiving unit 901, an information obtaining unit 902, a modification determining unit 903, a modification requesting unit 904, and a response receiving unit 905.
  • the modification determining unit 903, the modification requesting unit 904, and the response receiving unit 905 are similar to the modification determining unit 802, the modification requesting unit 803, and the response receiving unit 804 in the foregoing embodiments, and details are not described herein again.
  • the second receiving unit 901 is configured to: before the information acquiring unit 902 obtains the corresponding information of the IP flow and the specified access network, receive the mobile protocol type supported by the UE where the IP flow sent by the ANDSF is located; if the mobile protocol type does not support the IP The stream moves, and the information acquiring unit 902 obtains the corresponding information of the IP stream and the designated access network.
  • the information obtaining unit 902 is configured to obtain, according to an IP flow policy that is statically configured in the PCRF, the corresponding information of the IP flow and the specified access network, or receive the IP flow policy sent by the ANDSF, where the flow policy includes the IP flow and the specified Corresponding information of the access network.
  • the second receiving unit 901 After the second receiving unit 901 receives the mobile protocol type supported by the UE, if the protocol type does not support IP flow movement, the IP flow sent by the information acquiring unit 902 from the IP flow policy or the received ANDSF that is statically configured in the PCRF in advance In the policy, the corresponding information of the IP flow and the designated access network is obtained, and then when the modification determining unit 903 is different from the designated access network according to the current access network of the IP flow, determining to modify the access network of the IP flow, and then modifying The requesting unit 904 sends a modification request, and the response receiving unit 905 receives the modification response to complete the movement of the IP stream.
  • the embodiment of the present invention obtains the specified access network information of the IP flow by the foregoing unit, and initiates an IP flow movement process, so that the PDN GW modifies the access network of the IP flow, and implements the IP flow between different access networks. mobile.
  • FIG. 10 is a schematic structural diagram of an ANDSF according to an embodiment of the present invention.
  • the ANDSF can include the following modules:
  • the information sending module 1001 is configured to send an IP flow move indication message and/or an IP flow policy to the PCRF, where the IP flow move indication message and the IP flow policy both include an IP flow and corresponding information of the designated access network, so that the PCRF is configured according to the PCRF.
  • the corresponding information of the IP flow and the designated access network determines an access network that modifies the IP flow, sends an access network binding modification request of the IP flow to the PDN GW, and receives the PDN GW return The response back.
  • the feedback receiving module 1002 is configured to receive the feedback information sent by the PCRF, and send the feedback information to the UE, where the feedback information includes the IP flow and the modified access network information.
  • the PCRF can obtain the corresponding information of the IP flow and the designated access network, and the PCRF can initiate according to the corresponding information.
  • the IP flow mobile program sends an access network binding modification request of the IP flow to the PDN GW, and after receiving the request, the PDN GW modifies the current access network of the IP flow to the designated access network, and then sends a modified response to the PCRF.
  • the PCRF sends the IP flow and the modified access network information to the feedback receiving module 1002, and the feedback receiving module 1002 further forwards the information to the UE side.
  • the specified access network information of the IP flow is sent to the PCRF by the foregoing module, so that the PCRF initiates an IP flow movement process, and the PDN GW modifies the access network of the IP flow, thereby realizing different access of the IP flow.
  • FIG. 11 a schematic structural diagram of another ANDSF according to an embodiment of the present invention is shown.
  • the ANDSF may include a policy sending module 1103 and a message receiving module 1104 in addition to the information sending module 1101 and the feedback receiving module 1102.
  • the policy sending module 1103 is configured to send an IP mobility policy to the UE before the information sending module 1101 sends the IP stream mobility indication message to the PCRF.
  • the message receiving module 1104 is configured to: after the UE determines that the IP flow cannot be supported according to the supported mobile protocol type, receive the IP flow movement indication message sent by the UE.
  • the policy sending module 1103 sends an IP flow policy to the UE. After receiving the UE, the UE determines whether to support the IP flow movement according to the type of the mobile protocol supported by the UE. If not, the UE sends an IP flow move indication message to the message receiving module 1104. 1101: Sending the IP flow movement indication message to the PCRF, and simultaneously sending the IP flow mobility policy to the PCRF. After receiving the indication message, the PCRF may further determine, according to the IP flow policy, the IP flow in the indication message and the designated access network. If the corresponding information is correct, if it is correct, the IP flow movement process is initiated, and the access network modification request is sent to the PDN GW. After the PDN GW is modified, the modification response is sent to the PCRF, and the PCRF sends the modified IP network and the modified access network information to the The feedback receiving module 1102 further forwards the information to the UE side.
  • the specified access network information of the IP stream is sent to the PCRF by using the foregoing module, so that The PCRF initiates an IP flow movement process, and the PDN GW modifies the access network of the IP flow, thereby realizing the movement of the IP flow between different access networks.
  • FIG. 12 it is a schematic structural diagram of another ANDSF according to an embodiment of the present invention.
  • the ANDSF may include a registration receiving module 1203 in addition to the information sending module 1201 and the feedback receiving module 1202.
  • the registration receiving module 1203 is configured to: before the information sending module 1201 sends an IP mobility policy to the PCRF, receive a registration message of the UE, where the registration message includes a mobile protocol type supported by the UE;
  • the information sending module 1201 is further configured to send an IP flow policy to the PCRF when the mobile protocol type does not support IP flow movement.
  • the registration receiving module 1203 receives the registration message of the UE, where the mobile protocol type supported by the UE is included, and the information delivery module 1201 sends an IP mobility policy to the PCRF when the mobile protocol type does not support the IP flow movement, and the PCRF receives the IP according to the IP address.
  • the IP flow in the flow policy and the corresponding information of the designated access network initiate the IP flow movement process, and the information delivery module 1201 may also send the mobile protocol type and the IP flow policy to the PCRF, and the PCRF determines the UE according to the mobile protocol type.
  • the PCRF Whether to support IP flow movement, if not supported, the PCRF initiates an IP flow movement process according to the IP flow in the IP flow policy and the corresponding information of the designated access network, and sends an access network modification request to the PDN GW, and the PDN GW is modified. Sending a modification response to the PCRF, the PCRF sends the modified IP network and the modified access network information to the feedback receiving module 1202, and the feedback receiving module 1202 further forwards the information to the UE side.
  • the specified access network information of the IP flow is sent to the PCRF by the foregoing module, so that the PCRF initiates an IP flow movement process, and the PDN GW modifies the access network of the IP flow, thereby realizing different access of the IP flow.
  • FIG. 13 a schematic structural diagram of another ANDSF according to an embodiment of the present invention is shown.
  • the ANDSF may include a request receiving module 1303 in addition to the information sending module 1301 and the feedback receiving module 1302.
  • the request receiving module 1303 is configured to: before the information sending module 1301 sends an IP mobility policy to the PCRF, receive a request for the IPF policy to be applied by the PCRF, where the PCRF receives the IP flow mobility indication sent by the PDN GW or the mobile protocol supported by the UE. After the type, a request to apply for an IP flow policy is initiated.
  • the PCRF After receiving the IP flow movement indication sent by the PDN GW, the PCRF initiates an application for an IP mobility policy. Or the PCRF receives the mobile protocol type supported by the UE, and determines that the mobile protocol type does not support the IP flow movement, and initiates a request for applying for an IP mobility policy. After receiving the request, the request receiving module 1303 sends an IP flow policy to the PCRF by the information sending module 1301, and then the PCRF initiates an IP flow moving process according to the IP flow in the IP flow policy and the corresponding information of the designated access network.
  • the PDN GW is modified to send a modification response to the PCRF
  • the PCRF sends the modified IP network and the modified access network information to the feedback receiving module 1302, and the feedback receiving module 1302 further forwards the information to UE side.
  • the specified access network information of the IP flow is sent to the PCRF by the foregoing module, so that the PCRF initiates an IP flow movement process, and the PDN GW modifies the access network of the IP flow, thereby realizing different access of the IP flow.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente invention se rapporte à un procédé de déplacement de flux IP (Internet Protocol). Le procédé selon l'invention comprend les étapes suivantes : une fonction d'imputation et de règles (PCRF, Policy and Charging Rules Function) obtient les informations correspondantes entre le flux IP et le réseau d'accès désigné ; sur la base des informations correspondantes entre le flux IP et le réseau d'accès désigné, le réseau d'accès du flux IP est déterminé comme devant être modifié ; la PCRF transmet la demande de modification de liaison au réseau d'accès du flux IP à une passerelle de réseau à commutation de paquets (PDN GW, Packet Data Network Gateway), la demande contenant les informations du flux IP et du réseau d'accès désigné ; la réponse retournée par la PDN GW est reçue. En obtenant les informations du réseau d'accès désigné et en initiant le déplacement du flux IP via la PCRF, les modes de réalisation de la présente invention permettent à la PDN GW de modifier le réseau d'accès du flux IP et rendent possible le déplacement du flux IP entre différents réseaux d'accès.
PCT/CN2010/080633 2010-12-31 2010-12-31 Procédé de déplacement de flux ip (internet protocol), fonction d'imputation et de règles (pcrf) et fonction de recherche et de sélection de réseau d'accès (andsf) WO2012088716A1 (fr)

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CN201080006373.XA CN103392363B (zh) 2010-12-31 2010-12-31 一种ip流移动方法及pcrf、andsf
PCT/CN2010/080633 WO2012088716A1 (fr) 2010-12-31 2010-12-31 Procédé de déplacement de flux ip (internet protocol), fonction d'imputation et de règles (pcrf) et fonction de recherche et de sélection de réseau d'accès (andsf)

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