WO2017121200A1 - 一种ip流迁移方法、装置及系统 - Google Patents

一种ip流迁移方法、装置及系统 Download PDF

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Publication number
WO2017121200A1
WO2017121200A1 PCT/CN2016/107724 CN2016107724W WO2017121200A1 WO 2017121200 A1 WO2017121200 A1 WO 2017121200A1 CN 2016107724 W CN2016107724 W CN 2016107724W WO 2017121200 A1 WO2017121200 A1 WO 2017121200A1
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Prior art keywords
access network
indication information
information
access
deleted
Prior art date
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PCT/CN2016/107724
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English (en)
French (fr)
Inventor
周晓云
周星月
Original Assignee
中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US16/069,811 priority Critical patent/US20190037032A1/en
Priority to EP16884752.3A priority patent/EP3404884B1/en
Publication of WO2017121200A1 publication Critical patent/WO2017121200A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1083—In-session procedures
    • H04L65/1089—In-session procedures by adding media; by removing media
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/148—Migration or transfer of sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1403—Architecture for metering, charging or billing
    • H04L12/1407—Policy-and-charging control [PCC] architecture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/143—Termination or inactivation of sessions, e.g. event-controlled end of session
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • 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
    • H04M15/62—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP based on trigger specification
    • 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
    • H04M15/82—Criteria or parameters used for performing billing operations
    • H04M15/8228—Session based
    • 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
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/34—Selective release of ongoing connections

Definitions

  • the present invention relates to communication technologies, and in particular, to an IP stream migration method, apparatus, and system.
  • FIG. 1 is a schematic diagram of a scenario of an embodiment of an IP flow migration method in the prior art.
  • a user equipment User Equipment, UE for short
  • a 3GPP access network may establish a multi-access IP-CAN session with the network side.
  • the UE may adopt The non-3GPP IP access network establishes a connection (Internet Protocol, IP for short) between the network provided by the operator through a Packet Data Network Gateway (P-GW or PDN GW).
  • IP Internet Protocol
  • P-GW Packet Data Network Gateway
  • the UE may also establish a connection with the IP service provided by the operator through the P-GW by using the 3GPP access network, where the P-GW that the UE establishes the connection by using the non-3GPP IP access network and the 3GPP access network respectively is the same P- GW, and the P-GW is connected to an entity of a Policy and Charging Rules Function (PCRF).
  • PCRF Policy and Charging Rules Function
  • the inventor found in the process of implementing the above prior art that when the network policy changes, or when the UE subscription changes, the prior art cannot determine whether the NBIFOM can be applied, and thus, the multi-access IP-CAN session cannot be determined. Delete an access network.
  • an embodiment of the present invention provides an IP flow migration method, The device and system are used to solve the problem that it is impossible to determine to delete an access network from a multi-access IP-CAN session.
  • an embodiment of the present invention provides an IP flow migration method, where the user equipment UE establishes a multi-access IP connection access network through at least two access networks and a packet data network gateway P-GW.
  • the user equipment UE establishes a multi-access IP connection access network through at least two access networks and a packet data network gateway P-GW.
  • P-GW packet data network gateway
  • the policy and charging rule function PCRF entity acquires trigger information, and the trigger information includes information for deleting an access network from the multiple access IP-CAN session;
  • the PCRF entity determines, according to the trigger information, that the indication information is sent to the policy and charging execution function PCEF entity, where the indication information includes instructing the PCEF entity to delete an access network from the multiple access IP-CAN session, The process of causing the PCEF entity to initiate deletion of an access network from the multi-access IP-CAN session.
  • the indication information includes any one of the following or a combination thereof:
  • the network-based IP stream migrates the indication information that is not supported by the NBIFOM, the indication information that the NBIFOM does not authorize, and the indication information of the at least one access network.
  • the indication information further includes: access network identifier information to be deleted.
  • the to-be-deleted access network identification information includes IP-CAN type information of the to-be-deleted access network.
  • the indication information further includes: instructing to migrate the service data stream transmitted in the to-be-deleted access network to the remaining access network, where the remaining access network includes the at least two The access network of the access network except the access network to be deleted.
  • the trigger information includes: information that the network policy changes, or information that the subscription information of the UE changes.
  • the present invention also provides an IP stream migration method, which is applied in a scenario where a user equipment UE establishes a multi-access IP connection access network IP-CAN session with at least two access networks and a packet data network gateway P-GW, including :
  • the PCEF entity initiates a process of deleting an access network from the multiple access IP-CAN session according to the indication information.
  • the indication information includes any one of the following or a combination thereof: the network-based IP stream migration indication information that is not supported by the NBIFOM, the indication information that the NBIFOM does not authorize, and the indication information that deletes the at least one access network.
  • the indication information further includes: access network identifier information to be deleted.
  • the to-be-deleted access network identification information includes IP-CAN type information of the to-be-deleted access network.
  • the indication information further includes: migrating the service data stream transmitted in the access network to be deleted to the indication information in the remaining access network, where the remaining access network includes the at least two connections In addition to the access network of the access network to be deleted.
  • the invention also provides an IP stream migration device, comprising:
  • Obtaining a module configured to acquire trigger information, where the trigger information includes deleting information of an access network from the multi-access IP-CAN session;
  • a determining module configured to: according to the trigger information, determine to send indication information to a policy and charging execution function PCEF entity, the indication information comprising instructing the PCEF entity to delete an access network from the multiple access IP-CAN session So that the PCEF entity initiates a process of deleting an access network.
  • the indication information includes any one of the following or a combination thereof: indication information that is not supported by the NBIFOM, indication information that is not authorized by the NBIFOM, and indication information that is deleted from the at least one access network.
  • the indication information further includes: access network identifier information to be deleted.
  • the access network identifier information to be deleted includes IP-CAN type information of the access network to be deleted.
  • the indication information further includes: indication information for migrating the service data stream transmitted in the access network to be deleted to the remaining access network, where the remaining access network includes the at least two accesses The access network of the access network to be deleted except the network.
  • the trigger information includes: information that the network policy changes, or information that the subscription information of the UE changes.
  • the invention also provides an IP stream migration device, comprising:
  • a receiving module configured to receive indication information sent by the PCRF entity of the policy and charging rule function, where the indication information includes indication information that indicates that the PCEF entity deletes an access network from the IP-CAN session of the multiple access IP connection access network ;
  • And deleting a module configured to initiate a process of deleting an access network from the multiple access IP-CAN session according to the indication information.
  • the indication information includes any one of the following or a combination thereof: indication information that is not supported by the NBIFOM, indication information that is not authorized by the NBIFOM, and indication information that deletes the connection of the at least one access network.
  • the indication information further includes: access network identifier information to be deleted.
  • the to-be-deleted access network identification information includes IP-CAN type information of the to-be-deleted access network.
  • the indication information further includes: migrating the service data stream transmitted in the access network to be deleted to the indication information in the remaining access network, where the remaining access network includes the at least two connections In addition to the access network of the access network to be deleted.
  • the embodiment of the present invention further provides an IP stream migration system, comprising: the IP stream migration apparatus as described above and the IP stream migration apparatus as described above.
  • a storage medium is also provided.
  • the storage medium is arranged to store program code for performing the following steps:
  • Acquiring trigger information including deleting one from the multiple access IP-CAN session Information of the access network
  • the embodiment of the present invention includes a policy and a charging rule function, a PCRF entity acquiring policy, and a charging rule function, a PCRF entity acquiring trigger information, where the triggering information includes deleting one interface from the multiple access IP-CAN session.
  • Information about the network access the PCRF entity determines, according to the trigger information, that the indication information is sent to the policy and charging execution function PCEF entity, the indication information includes indicating that the PCEF entity is deleted from the multiple access IP-CAN session
  • An access network to cause the PCEF entity to initiate a process of deleting an access network from the multi-access IP-CAN session. It is implemented to delete an access network from a multi-access IP-CAN session when the network policy changes or when the UE subscription changes. The problem of IP stream migration cannot be canceled when the network policy changes or when the UE subscription changes.
  • FIG. 1 is a schematic diagram of a scenario of an embodiment of an IP flow migration method in the prior art
  • FIG. 2 is a schematic flowchart of an embodiment of an IP flow migration method according to the present invention.
  • FIG. 3 is a schematic flowchart of a second embodiment of an IP flow migration method according to the present invention.
  • FIG. 4 is a schematic flowchart of a third embodiment of an IP flow migration method according to the present invention.
  • FIG. 5 is a schematic flowchart diagram of a fourth embodiment of an IP flow migration method according to the present invention.
  • FIG. 6 is a schematic flowchart of a fifth embodiment of an IP flow migration method according to the present invention.
  • FIG. 7 is a schematic flowchart of an embodiment of an IP stream migration apparatus according to the present invention.
  • FIG. 8 is a schematic flowchart diagram of an embodiment of an IP stream migration apparatus according to the present invention.
  • the IP stream migration method provided by the embodiment of the present invention may be specifically applied to a scenario in which a UE establishes a multi-access IP-CAN session by using the at least two access networks and the P-GW, and the network policy is changed, or the UE is contracted.
  • the two access networks may include a first access network and a second access network.
  • the two access networks may include a 3GPP access network and a non-3GPP access network.
  • the IP stream migration method provided in this embodiment may be specifically implemented by using an IP stream migration apparatus, where the IP stream migration apparatus may be integrated in a PCRF entity, a P-GW, or separately, and the IP flow migration apparatus may adopt software and/or Hardware way to achieve.
  • the IP stream migration method and apparatus provided in this embodiment will be described in detail below.
  • IP-CAN multi-access IP-connected access network
  • Step 201 The policy and charging rule function
  • the PCRF entity acquires trigger information, where the trigger information includes information for deleting an access network from the multiple access IP-CAN session.
  • the trigger information may include: information that the network policy changes, or information that the subscription information of the UE changes.
  • Step 202 The PCRF entity determines, according to the trigger information, that the indication information is sent to the policy and charging execution function PCEF entity.
  • the indication information includes instructing the PCEF entity to delete an access network from the multiple access IP-CAN session, so that the PCEF entity initiates deletion from the multiple access IP-CAN session. The process of an access network.
  • the indication information is used to instruct the PCEF to delete an access network from the multiple access IP-CAN session.
  • the indication information includes any one of the following or a combination thereof: indication information that is not supported by the NBIFOM, indication information that is not authorized by the NBIFOM, or indication information that deletes at least one access network connection.
  • the policy charging rule information may further include: identifier information of the access network to be deleted.
  • the access network identifier information to be deleted is IP-CAN type information of the deleted access network.
  • the indication information may further include: migrating the service data stream transmitted in the access network to be deleted to the indication information in the remaining access network, where the remaining information
  • the access network includes an access network of the at least two access networks except the access network to be deleted.
  • the policy and charging rule function PCRF entity acquisition policy and charging rule function PCRF entity acquires trigger information, where the trigger information includes deleting information of an access network from the multiple access IP-CAN session;
  • the PCRF entity determines, according to the trigger information, that the indication information is sent to the policy and charging execution function PCEF entity, where the indication information includes instructing the PCEF entity to delete an access network from the multiple access IP-CAN session,
  • the process of causing the PCEF entity to initiate deletion of an access network from the multi-access IP-CAN session It is implemented to delete an access network from a multi-access IP-CAN session when the network policy changes or when the UE subscription changes. The problem of IP stream migration cannot be canceled when the network policy changes or when the UE subscription changes.
  • FIG. 3 is a schematic flowchart of a second embodiment of an IP flow migration method according to the present invention, as shown in FIG. 3,
  • the executor of this embodiment may be a PCEF entity, and the IP stream migration method provided by the present invention is applied to a scenario where a user equipment UE establishes a multi-access IP-CAN session with a packet data network gateway P-GW through at least two access networks.
  • P-GW packet data network gateway
  • Step 301 Policy and Charging Enforcement Function PCEF entity policy and charging rule function indication information sent by the PCRF entity.
  • the indication information includes indication information indicating that an access network is deleted from the multiple access IP-CAN session.
  • the indication information is used to indicate that the PCEF initiates a process of deleting an access network from the multiple access IP-CAN session.
  • the indication information includes any one of the following or a combination thereof: indication information that is not supported by the NBIFOM, indication information that is not authorized by the NBIFOM, or indication information that deletes at least one access network.
  • the indication information may further include: identifier information of the access network to be deleted.
  • the access network identifier information to be deleted is IP-CAN type information of the deleted access network.
  • the indication information may further include: migrating the service data stream transmitted in the access network to be deleted to the indication information in the remaining access network.
  • Step 302 The PCEF entity initiates, according to the indication information, a process of deleting an access network from the multiple access IP-CAN session.
  • the PCEF deletes an access network from the multiple access IP-CAN session according to the indication information, and at least includes the following implementation manner.
  • the PCEF deletes an access network of the multiple access IP-CAN session according to the indication information and the configuration policy.
  • the indication information includes any one or a combination of the following: a network-based IP flow migration indication information that is not supported by the NBIFOM, NBIFOM The unauthorized indication information or the indication information of deleting at least one access network.
  • the PCEF deletes the access network identified by the identifier information of the multiple access IP-CAN session according to the indication information and the identifier information of the access network to be deleted, where the indication information includes any of the following One or a combination of the indication information that is not supported by the NBIFOM, the indication information that the NBIFOM does not authorize, or the at least one access network indication information is deleted, and the identification information of the access network to be deleted is the IP-CAN type information of the access network.
  • the service data stream transmitted in the access network is deleted and migrated to the remaining access network.
  • the indication information may further include: migrating the service data stream transmitted in the access network to be deleted to the remaining access network, on the basis of the first or second implementation manner.
  • the policy and charging execution function PCEF entity receives the indication information sent by the policy and charging rule function PCRF entity, and the indication information includes instructing the PCEF entity to delete an access from the multiple access IP-CAN session.
  • the indication information of the network; the PCEF entity initiates a process of deleting an access network from the multiple access IP-CAN session according to the indication information. . It is implemented to delete an access network from a multi-access IP-CAN session when the network policy changes or when the UE subscription changes. The problem of IP stream migration cannot be canceled when the network policy changes or when the UE subscription changes.
  • the indication information includes any one of the following or a combination thereof: the NBIFOM does not support the IP-CAN.
  • the indication information of the session, the indication information that the NBIFOM does not authorize the IP-CAN session, or the indication information of the at least one access network, the IP stream migration method provided by the present invention includes: the PCRF entity is set in the P -GW.
  • Step 401 The PCRF entity acquires trigger information for deleting an access network from the multiple access IP-CAN session.
  • the triggering information may include: the network policy changes, or the subscription information of the UE changes. That is, the PCRF determines that the network-based IP flow migration is not applicable to the IP-CAN session, wherein the IP-CAN session is included in the user equipment UE pass A multi-access IP-CAN session established by at least two access networks with a packet data network gateway P-GW.
  • Step 402 The PCRF entity sends a policy and charging rule providing message to the PCEF entity, where the message carries the indication information of deleting an access network from the multiple access IP-CAN session.
  • the indication information is used to trigger a process for the PCEF to delete an access network from the multiple access IP-CAN session, where the indication information includes any one of the following or a combination thereof: NBIFOM does not Support indication information, indication information that NBIFOM does not authorize, or indication information for deleting at least one access network.
  • Step 403 The PCEF deletes an access network from the established multi-access IP-CAN session according to the indication information and the configuration policy.
  • step S403-a or step S403-b is performed.
  • step S403-a the PCEF deletes the connection that is accessed through the 3GPP according to the indication information and the configuration policy, and the P-GW where the PCEF is located initiates the bearer deactivation initiated by the P-GW (P-GW initiated).
  • the bearer deactivation procedure removes the default bearer and all proprietary bearers in the 3GPP access, but the P-GW maintains the IP address. or,
  • Step S403-b the PCEF deletes the connection through the non-3GPP access according to the indication information and the configuration policy, and the P-GW where the PCEF is located initiates the P-GW initiated resource allocation deactivation (P-GW initiated resource allocation).
  • the deactivation process deletes the default bearer and all the private bearers in the non-3GPP access, but the P-GW maintains the IP address.
  • Step 404 The PCEF sends a policy and charging rule to provide response information to the PCRF.
  • the PCEF may migrate the service flow transmitted in the 3GPP access to the non-3GPP access; or before performing step S403-b, the PCEF may access the non-3GPP.
  • the traffic carried in the medium is migrated to the 3GPP access.
  • the indication information includes any one of the following or a combination thereof: indication information that is not supported by NBIFOM, NBIFOM
  • the policy charging rule information may further include the identifier information of the access network to be deleted, and the IP stream migration method provided by the present invention, based on the unauthorized indication information or the indication information of the at least one access network. Including: need to explain The PCRF entity is set in the P-GW.
  • Step 501 The PCRF entity acquires trigger information for deleting an access network from the multiple access IP-CAN session.
  • the triggering information may include: the network policy changes, or the subscription information of the UE changes. That is, the PCRF determines that network-based IP flow migration is not applicable to the IP-CAN session, wherein the IP-CAN session is included in the user equipment UE established by the at least two access networks and the packet data network gateway P-GW Multiple access IP-CAN sessions.
  • Step 502 The PCRF entity sends a policy and charging rule providing message to the PCEF entity, where the message carries the indication information of deleting an access network from the multiple access IP-CAN session.
  • the indication information is used to trigger a PCEF to initiate a process of deleting an access network from the multiple access IP-CAN session, where the indication information includes any one of the following or a combination thereof: NBIFOM does not
  • the indication information may further include the access network identification information to be deleted, based on the indication information that is supported, the indication information that is not authorized by the NBIFOM, or the indication information of the at least one access network.
  • the identification information may be IP-CAN type indication information (ie, 3GPP_EPS or Non_3GPP_EPS).
  • Step 503 The PCEF deletes an access network from the established multi-access IP-CAN session according to the indication information.
  • step S503-a if the indication information of the access network that needs to be deleted indicates that the 3GPP access network is deleted, step S503-a is performed; if the indication information of the access network that needs to be deleted indicates that the non-3GPP access network is deleted, step S503- b.
  • the connection that is accessed through the 3GPP is deleted.
  • the P-GW where the PCEF is located initiates a P-GW initiated bearer deactivation process, and the default bearer in the 3GPP access is deleted. All proprietary bearers, but the P-GW will maintain an IP address.
  • the connection through the non-3GPP access is deleted.
  • the P-GW in which the PCEF is located initiates a P-GW initiated resource allocation deactivation (P-GW initiated resource allocation deactivation) process, and the non-3GPP access is deleted.
  • P-GW initiated resource allocation deactivation P-GW initiated resource allocation deactivation
  • Step 504 The PCEF sends a policy and charging rule to the PCRF to provide response information.
  • the PCEF may migrate the service flow transmitted in the 3GPP access to the non-3GPP access; or before performing step S703-b, the PCEF may access the non-3GPP.
  • the traffic carried in the medium is migrated to the 3GPP access.
  • FIG. 6 is a schematic flowchart of a fifth embodiment of an IP flow migration method according to the present invention.
  • the applicable scenario of the embodiment is that the indication information includes the indication information in the embodiment shown in FIG. 5 , and may further include The method for migrating the service data stream to be transmitted in the access network to be deleted to the remaining access network, and the method for migrating the IP stream provided by the present invention includes:
  • Step 601 The PCRF entity acquires trigger information, where the trigger information is used to delete information of an access network from the multiple access IP-CAN session.
  • the triggering information may include: the network policy changes, or the subscription information of the UE changes. That is, the PCRF determines that network-based IP flow migration is not applicable to the IP-CAN session, wherein the IP-CAN session is included in the user equipment UE established by the at least two access networks and the packet data network gateway P-GW Multiple access IP-CAN sessions.
  • Step 602 The PCRF entity sends a policy and charging rule providing message to the PCEF entity, where the policy and charging rule providing message carries the indication information of deleting an access network from the multiple access IP-CAN session.
  • the indication information may further include: access network identification information to be deleted and indication information for migrating the service data stream transmitted in the access network to be deleted to the remaining access network.
  • the indication information is used to trigger the PCEF to delete an access network from the multiple access IP-CAN session, where the indication information includes any one of the following or a combination thereof: NBIFOM does not support The indication information, the indication information that the NBIFOM does not authorize, or the indication information of deleting at least one access network.
  • the indication information may further include: access network identification information to be deleted and indication information for migrating the service data stream transmitted in the access network to be deleted to the remaining access network.
  • Step 603 The P-GW transmits the access network to be deleted according to the indication information.
  • the transmitted service data stream is migrated to the remaining access network (the indication information may be a PCC rule for migrating the service data flow from the access network to be deleted to the remaining access network), and deleting the access network identification information to be deleted.
  • the identified access network may be a PCC rule for migrating the service data flow from the access network to be deleted to the remaining access network.
  • steps 603-a1 and 603-a2 are performed; if the indication information of the access network that needs to be deleted indicates that the non-3GPP access is deleted, the steps are performed. 603-b1 and S603-b2.
  • Step S603-a1 The PCEF migrates the service data stream transmitted in the 3GPP access to the non-3GPP access according to the PCC rule;
  • Step S603-a2 the PCEF deletes the connection through the 3GPP access, and the P-GW where the PCEF is located initiates a P-GW initiated bearer deactivation process, and deletes the default bearer in the 3GPP access. And all proprietary bearers, but the P-GW will maintain an IP address.
  • Step S603-b1 the PCEF migrates the service data stream transmitted in the non-3GPP access to the 3GPP access according to the PCC rule;
  • Step S603-b2 the PCEF deletes the connection through the non-3GPP access, and the P-GW in which the PCEF is located initiates a P-GW initiated resource allocation deactivation process to delete the non-3GPP access.
  • step 604 the PCEF sends a policy and charging rule to provide response information to the PCRF.
  • FIG. 7 is a schematic flowchart of an embodiment of an IP stream migration apparatus according to the present invention.
  • the IP stream migration apparatus provided by the present invention includes: an obtaining module 71, a determining module 72, and a sending module 73. among them,
  • the obtaining module 71 is configured to acquire trigger information, where the trigger information includes information for deleting an access network from the multiple access IP-CAN session;
  • the determining module 72 is configured to: according to the shift trigger information, determine to send indication information to the policy and charging execution function PCEF entity, where the indication information includes instructing the PCEF entity to delete one interface from the multiple access IP-CAN session Networking, so that the PCEF entity initiates deletion The process of accessing the network.
  • the policy and charging rule function PCRF entity acquisition policy and charging rule function PCRF entity acquires trigger information, where the trigger information includes deleting information of an access network from the multiple access IP-CAN session;
  • the PCRF entity determines, according to the trigger information, that the indication information is sent to the policy and charging execution function PCEF entity, where the indication information includes instructing the PCEF entity to delete an access network from the multiple access IP-CAN session,
  • the process of causing the PCEF entity to initiate deletion of an access network from the multi-access IP-CAN session. It is implemented to delete an access network from a multi-access IP-CAN session when the network policy changes or when the UE subscription changes. The problem of IP stream migration cannot be canceled when the network policy changes or when the UE subscription changes.
  • the indication information includes any one of the following or a combination thereof: indication information that is not supported by the NBIFOM, indication information that is not authorized by the NBIFOM, and indication information that deletes at least one access network.
  • the indication information further includes: identifier information of the access network to be deleted.
  • the access network identifier information to be deleted includes IP-CAN type information of the access network to be deleted.
  • the indication information further includes: indication information for migrating the service data stream transmitted in the access network to be deleted to the remaining access network, where the remaining access network An access network of the at least two access networks except the access network to be deleted is included.
  • the trigger information includes: information that the network policy changes, or information that the subscription information of the UE changes.
  • an access network is deleted from the multi-access IP-CAN session when the network policy changes or when the UE subscription changes.
  • the problem of IP stream migration cannot be canceled when the network policy changes or when the UE subscription changes.
  • FIG. 8 is a schematic flowchart of a second embodiment of an IP stream migration apparatus according to the present invention.
  • the IP stream migration apparatus provided by the present invention includes: a receiving module 81 and a migration module 82. among them,
  • the receiving module 81 is configured to receive the indication information sent by the policy and charging rule function PCRF entity, where the indication information includes indication information that indicates that the PCEF entity deletes an access network from the multiple access IP-CAN session;
  • the deleting module 82 is configured to initiate a process of deleting an access network from the multiple access IP-CAN session according to the indication information.
  • the policy and charging execution function entity PCEF receives the indication information sent by the policy and charging rule function PCRF entity, and the indication information is used to trigger the PCEF to initiate deletion of a network connection from the multi-access IP-CAN session.
  • the PCEF initiates a process of deleting a network connection from the multiple access IP-CAN session according to the indication information. It is implemented to delete an access network from a multi-access IP-CAN session when the network policy changes or when the UE subscription changes. The problem of IP stream migration cannot be canceled when the network policy changes or when the UE subscription changes.
  • the indication information includes any one of the following or a combination thereof: indication information that is not supported by the NBIFOM, indication information that is not authorized by the NBIFOM, or indication information that deletes the connection of the at least one access network;
  • the deleting module specifically initiates a process of deleting an access network from the multiple access IP-CAN session according to the indication information.
  • the indication information includes any one of the following or a combination thereof: the indication information that is not supported by the NBIFOM, the indication information that is not authorized by the NBIFOM, and the indication information that deletes the connection of the at least one access network.
  • the indication information further includes: identifier information of the access network to be deleted.
  • the network identifier information of the access to be deleted includes IP-CAN type information of the access network to be deleted.
  • the indication information further includes: indication information for migrating the service data stream transmitted in the access network to be deleted to the remaining access network, where the remaining access network An access network of the at least two access networks except the access network to be deleted is included.
  • an access network is deleted from the multi-access IP-CAN session when the network policy changes or when the UE subscription changes.
  • the problem of IP stream migration cannot be canceled when the network policy changes or when the UE subscription changes.
  • the present invention also provides an IP stream migration system, comprising: an IP stream migration device as shown in FIG. 7 and an IP flow migration device as shown in FIG.
  • the embodiment of the present invention includes a policy and a charging rule function, a PCRF entity acquiring policy, and a charging rule function, a PCRF entity acquiring trigger information, where the triggering information includes deleting information of an access network from the multiple access IP-CAN session; Determining, according to the trigger information, that the PCRF entity sends the indication information to the policy and charging execution function PCEF entity, where the indication information includes instructing the PCEF entity to delete an access network from the multiple access IP-CAN session,
  • the PCEF entity is caused to initiate a process of deleting an access network from the multi-access IP-CAN session. It is implemented to delete an access network from a multi-access IP-CAN session when the network policy changes or when the UE subscription changes. The problem of IP stream migration cannot be canceled when the network policy changes or when the UE subscription changes.

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Abstract

本发明公开了一种IP流迁移方法、装置及系统。该方法，包括：策略和计费规则功能PCRF实体获取触发信息，所述触发信息包括从所述多接入IP-CAN会话删除一个接入网的信息；所述PCRF实体根据所述触发信息，确定向策略和计费执行功能PCEF实体发送指示信息，所述指示信息包括指示所述PCEF实体从所述多接入IP-CAN会话删除一个接入网，以使所述PCEF实体发起从所述多接入IP-CAN会话删除一个接入网的流程。实现了在网络策略发生改变时，或UE签约发生改变时，从多接入IP-CAN会话的删除一个接入网。避免了网络策略发生改变时，或UE签约发生改变时，无法取消IP流迁移的问题。

Description

一种IP流迁移方法、装置及系统 技术领域
本发明涉及通信技术，尤指一种IP流迁移方法、装置及系统。
背景技术
随着通信技术的发展，第三代合作伙伴计划(3rd Generation Partnership Project，简称为3GPP)技术的应用也越来越广泛。
图1为现有技术中IP流迁移方法一实施例的场景示意图。如图1所示，同时在非3GPP IP接入网和3GPP接入网覆盖下的用户设备(User Equipment，简称UE)可以与网络侧建立多接入IP-CAN会话，具体的，UE可以采用非3GPP IP接入网通过分组数据网络网关(Packet Data Network Gateway，简称为P-GW或者PDN GW)与运营商提供的网络之间互连的协议(Internet Protocol，简称IP)业务建立连接，同时，UE也可以采用3GPP接入网通过P-GW与运营商提供的IP业务建立连接，其中，UE分别采用非3GPP IP接入网和3GPP接入网建立连接的P-GW是同一个P-GW，并且该P-GW与策略和计费规则功能(Policy and Charging Rules Function，简称为PCRF)的实体连接。需要说明的是，UE在初始建立IP-CAN会话时与网络协商并由PCRF决定是否可以应用NBIFOM，在UE增加一个接入建立多接入IP-CAN会话时，再由PCRF决定是否可以应用NBIFOM。
然而，发明人在实现上述现有技术的过程中发现，网络策略发生改变时，或UE签约发生改变时，现有技术无法确定是否可以应用NBIFOM，进而，无法确定从多接入IP-CAN会话中删除一个接入网。
发明内容
为了解决上述技术问题，本发明实施例提供了一种IP流迁移方法、 装置及系统，用以解决无法确定从多接入IP-CAN会话中删除一个接入网的问题。
为了达到本发明实施例目的，本发明实施例提供了一种IP流迁移方法，应用在用户设备UE通过至少两个接入网与分组数据网络网关P-GW建立多接入IP连接接入网IP-CAN会话的场景下，包括：
策略和计费规则功能PCRF实体获取触发信息，所述触发信息包括从所述多接入IP-CAN会话删除一个接入网的信息；
所述PCRF实体根据所述触发信息，确定向策略和计费执行功能PCEF实体发送指示信息，所述指示信息包括指示所述PCEF实体从所述多接入IP-CAN会话删除一个接入网，以使所述PCEF实体发起从所述多接入IP-CAN会话删除一个接入网的流程。
可选地，所述指示信息包括以下任意一项或其组合：
基于网络的IP流迁移NBIFOM不支持的指示信息、NBIFOM不授权的指示信息、删除至少一个接入网的指示信息。
可选地，所述指示信息还包括：待删除接入网标识信息。
可选地，所述待删除接入网标识信息包括所述待删除接入网的IP-CAN类型信息。
可选地，所述指示信息还包括：将所述待删除接入网中传输的业务数据流迁移到剩下接入网中的指示信息，所述剩下接入网包括所述至少两个接入网中除待删除接入网的接入网。
可选地，所述触发信息包括：网络策略发生改变的信息，或者，所述UE的签约信息发生改变的信息。
本发明还提供了一种IP流迁移方法，应用在用户设备UE通过至少两个接入网与分组数据网络网关P-GW建立多接入IP连接接入网IP-CAN会话的场景下，包括：
策略和计费执行功能PCEF实体接收策略和计费规则功能PCRF实体 发送的指示信息，所述指示信息包括指示所述PCEF实体从多接入IP-CAN会话删除一个接入网的指示信息；
所述PCEF实体根据所述指示信息，发起从所述多接入IP-CAN会话删除一个接入网的流程。
可选地，所述指示信息包括以下任意一项或其组合：基于网络的IP流迁移NBIFOM不支持的指示信息、NBIFOM不授权的指示信息、删除至少一个接入网的指示信息。
可选地，所述指示信息，还包括：待删除接入网标识信息。
可选地，所述待删除接入网标识信息包括所述待删除接入网的IP-CAN类型信息。
可选地，所述指示信息，还包括：将待删除接入网中传输的业务数据流迁移到剩下接入网中的指示信息，所述剩下接入网包括所述至少两个接入网中除待删除接入网的接入网。
本发明还提供了一种IP流迁移装置，包括：
获取模块，设置为获取触发信息，所述触发信息包括从多接入IP-CAN会话删除一个接入网的信息；
确定模块，设置为根据所述触发信息，确定向策略和计费执行功能PCEF实体发送指示信息，所述指示信息包括指示所述PCEF实体从所述多接入IP-CAN会话删除一个接入网，以使所述PCEF实体发起删除一个接入网的流程。
可选地，所述指示信息，包括以下任意一项或其组合：NBIFOM不支持的指示信息、NBIFOM不授权的指示信息、删除至少一个接入网的指示信息。
可选地，所述指示信息，还包括：待删除接入网标识信息。
可选地，所述待删除的接入网标识信息包括所述待删除接入网的IP-CAN类型信息。
可选地，所述指示信息还包括：将待删除接入网中传输的业务数据流迁移到剩下接入网中的指示信息，所述剩下接入网包括所述至少两个接入网中除待删除接入网的接入网。
可选地，所述触发信息包括:网络策略发生改变的信息，或者，所述UE的签约信息发生改变的信息。
本发明还提供了一种IP流迁移装置，包括：
接收模块，设置为接收策略和计费规则功能PCRF实体发送的指示信息，所述指示信息包括指示所述PCEF实体从多接入IP连接接入网IP-CAN会话删除一个接入网的指示信息；
删除模块，设置为根据所述指示信息，发起从所述多接入IP-CAN会话删除一个接入网的流程。
可选地，所述指示信息包括以下任意一项或其组合：NBIFOM不支持的指示信息、NBIFOM不授权的指示信息、删除至少一个接入网连接的指示信息。
可选地，所述指示信息，还包括：待删除接入网标识信息。
可选地，所述待删除接入网标识信息包括所述待删除接入网的IP-CAN类型信息。
可选地，所述指示信息，还包括：将待删除接入网中传输的业务数据流迁移到剩下接入网中的指示信息，所述剩下接入网包括所述至少两个接入网中除待删除接入网的接入网。
本发明实施例还提供了一种IP流迁移系统，包括：如上述所述的IP流迁移装置和如上述所述的IP流迁移装置。
根据本发明的又一个实施例，还提供了一种存储介质。该存储介质设置为存储用于执行以下步骤的程序代码：
获取触发信息，所述触发信息包括从所述多接入IP-CAN会话删除一 个接入网的信息；
根据所述触发信息，确定向策略和计费执行功能PCEF实体发送指示信息，所述指示信息包括指示所述PCEF实体从所述多接入IP-CAN会话删除一个接入网，以使所述PCEF实体发起从所述多接入IP-CAN会话删除一个接入网的流程。
现有技术相比，本发明实施例包括策略和计费规则功能PCRF实体获取策略和计费规则功能PCRF实体获取触发信息，所述触发信息包括从所述多接入IP-CAN会话删除一个接入网的信息；所述PCRF实体根据所述触发信息，确定向策略和计费执行功能PCEF实体发送指示信息，所述指示信息包括指示所述PCEF实体从所述多接入IP-CAN会话删除一个接入网，以使所述PCEF实体发起从所述多接入IP-CAN会话删除一个接入网的流程。实现了在网络策略发生改变时，或UE签约发生改变时，从多接入IP-CAN会话的删除一个接入网。避免了网络策略发生改变时，或UE签约发生改变时，无法取消IP流迁移的问题。
本发明的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，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，并不构成对本发明的不当限定。在附图中：
图1为现有技术中IP流迁移方法一实施例的场景示意图；
图2为本发明IP流迁移方法一实施例的流程示意图；
图3为本发明IP流迁移方法二实施例的流程示意图；
图4为本发明IP流迁移方法三实施例的流程示意图；
图5为本发明IP流迁移方法四实施例的流程示意图；
图6为本发明IP流迁移方法五实施例的流程示意图；
图7为本发明IP流迁移装置一实施例的流程示意图；
图8为本发明IP流迁移装置二实施例的流程示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚明白，下文中将结合附图对本发明的实施例进行详细说明。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任意组合。
本发明实施例提供的IP流迁移方法具体可以应用于UE通过至少两个接入网与P-GW建立多接入IP-CAN会话的场景下，网络策略发生改变，或者，所述UE的签约信息发生改变时，其中，两个接入网可以包括第一接入网和第二接入网，例如，两个接入网可以包括3GPP接入网和非3GPP接入网。本实施例提供的IP流迁移方法具体可以通过IP流迁移装置来执行，该IP流迁移装置可以集成在PCRF实体、P-GW中，或者单独设置，该IP流迁移装置可以采用软件和/或硬件的方式来实现。以下对本实施例提供的IP流迁移方法及装置进行详细地说明。
图2为本发明IP流迁移方法一实施例的流程示意图，如图2所示，本实施例的执行主体可以是PCRF实体，本发明提供的IP流迁移方法，应用在用户设备UE通过至少两个接入网与分组数据网络网关P-GW建立多接入IP连接接入网(IP-Connectivity Access Network，简称IP-CAN)会话的场景下，包括：
步骤201、策略和计费规则功能PCRF实体获取触发信息，所述触发信息包括从所述多接入IP-CAN会话删除一个接入网的信息。
在本实施例中，触发信息可以包括:网络策略发生改变的信息，或者，所述UE的签约信息发生改变的信息。
步骤202、所述PCRF实体根据所述触发信息，确定向策略和计费执行功能PCEF实体发送指示信息。
在本实施例中，所述指示信息包括指示所述PCEF实体从所述多接入IP-CAN会话删除一个接入网，以使所述PCEF实体发起从所述多接入IP-CAN会话删除一个接入网的流程。
在本实施例中，所述指示信息用以指示PCEF从所述多接入IP-CAN会话删除一个接入网。
举例来讲，所述指示信息，包括以下任意一项或其组合：NBIFOM不支持的指示信息、NBIFOM不授权的指示信息或是删除至少一个接入网连接的指示信息。
进一步的，在上述实施例的基础上，所述策略计费规则信息，还可以包括：待删除接入网的标识信息。
进一步的，在上述实施例的基础上，所述待删除的接入网标识信息为所述删除的接入网的IP-CAN类型信息。
更进一步的，在上述实施例的基础上，所述指示信息，还可以包括：将在待删除接入网中传输的业务数据流迁移到剩下接入网中的指示信息，所述剩下接入网包括所述至少两个接入网中除待删除接入网的接入网。
在本实施例中，策略和计费规则功能PCRF实体获取策略和计费规则功能PCRF实体获取触发信息，所述触发信息包括从所述多接入IP-CAN会话删除一个接入网的信息；所述PCRF实体根据所述触发信息，确定向策略和计费执行功能PCEF实体发送指示信息，所述指示信息包括指示所述PCEF实体从所述多接入IP-CAN会话删除一个接入网，以使所述PCEF实体发起从所述多接入IP-CAN会话删除一个接入网的流程。实现了在网络策略发生改变时，或UE签约发生改变时，从多接入IP-CAN会话的删除一个接入网。避免了网络策略发生改变时，或UE签约发生改变时，无法取消IP流迁移的问题。
图3为本发明IP流迁移方法二实施例的流程示意图，如图3所示， 本实施例的执行主体可以是PCEF实体，本发明提供的IP流迁移方法，应用在用户设备UE通过至少两个接入网与分组数据网络网关P-GW建立多接入IP-CAN会话的场景下，包括：
步骤301、策略和计费执行功能PCEF实体策略和计费规则功能PCRF实体发送的指示信息。
在本实施例中，所述指示信息包括指示从所述多接入IP-CAN会话删除一个接入网的指示信息。
在本实施例中，所述指示信息用以指示PCEF发起从所述多接入IP-CAN会话删除一个接入网的流程。
举例来讲，所述指示信息，包括以下任意一项或其组合：NBIFOM不支持的指示信息、NBIFOM不授权的指示信息或是删除至少一个接入网的指示信息。
进一步的，在上述实施例的基础上，所述指示信息，还可以包括：待删除的接入网的标识信息。
进一步的，在上述实施例的基础上，所述待删除的接入网标识信息为所述删除的接入网的IP-CAN类型信息。
更进一步的，在上述实施例的基础上，所述指示信息，还可以包括：将在待删除的接入网中传输的业务数据流迁移到剩下接入网中的指示信息。
步骤302、所述PCEF实体根据所述指示信息，发起从所述多接入IP-CAN会话删除一个接入网的流程。
在本实施例中，所述PCEF根据所述指示信息，从多接入IP-CAN会话删除一个接入网，至少包括以下实现方式。
第一种实现方式，所述PCEF根据所述指示信息和配置策略，删除多接入IP-CAN会话的一个接入网。其中，所述指示信息包括以下任意一项或其组合：基于网络的IP流迁移NBIFOM不支持的指示信息、NBIFOM 不授权的指示信息或是删除至少一个接入网的指示信息。
第二种实现方式，所述PCEF根据所述指示信息，以及待删除接入网的标识信息删除多接入IP-CAN会话的标识信息标识的接入网，其中，所述指示信息包括以下任意一项或其组合：NBIFOM不支持的指示信息、NBIFOM不授权的指示信息或删除至少一个接入网指示信息，待删除接入网标识信息为接入网的IP-CAN类型信息。
第三种实现方式，在上述第二种实现方式的基础上，将删除接入网中传输的业务数据流迁移到剩下接入网。其中，所述指示信息在第一种或第二种实现方式的基础上，还可以包括：将在待删除接入网中传输的业务数据流迁移到剩下接入网。
在本实施例中，策略和计费执行功能PCEF实体接收策略和计费规则功能PCRF实体发送的指示信息，所述指示信息包括指示所述PCEF实体从多接入IP-CAN会话删除一个接入网的指示信息；所述PCEF实体根据所述指示信息，发起从所述多接入IP-CAN会话删除一个接入网的流程。。实现了在网络策略发生改变时，或UE签约发生改变时，从多接入IP-CAN会话的删除一个接入网。避免了网络策略发生改变时，或UE签约发生改变时，无法取消IP流迁移的问题。
图4为本发明IP流迁移方法三实施例的流程示意图，如图4所示，本实施例的适用场景是所述指示信息包括以下任意一项或其组合：NBIFOM不支持所述IP-CAN会话的指示信息、NBIFOM不授权所述IP-CAN会话的指示信息或是删除至少一个接入网的指示信息，本发明提供的IP流迁移方法，包括：需要说明的是，PCRF实体设置在P-GW中。
步骤401、PCRF实体获取从多接入IP-CAN会话删除一个接入网的触发信息。
在本实施例中，触发信息可以包括:网络策略发生改变，或者，所述UE的签约信息发生改变。也就是说，PCRF确定基于网络的IP流迁移已不适用于该IP-CAN会话，其中，该IP-CAN会话包括在用户设备UE通 过至少两个接入网与分组数据网络网关P-GW建立的多接入IP-CAN会话。
步骤402、所述PCRF实体向PCEF实体发送策略和计费规则提供消息，消息中携带从所述多接入IP-CAN会话删除一个接入网的指示信息。
在本实施例中，所述指示信息用以触发PCEF从所述多接入IP-CAN会话删除一个接入网的流程，其中，所述指示信息，包括以下任意一项或其组合：NBIFOM不支持指示信息、NBIFOM不授权的指示信息或是删除至少一个接入网的指示信息。
步骤403、所述PCEF根据所述指示信息和配置策略，从已建立的多接入IP-CAN会话删除一个接入网。
具体的，执行步骤S403-a或步骤S403-b。
举例来讲，步骤S403-a，PCEF根据所述指示信息和配置策略，删除通过3GPP接入的连接，具体实现时PCEF所在的P-GW发起P-GW发起的承载去激活(P-GW initiated bearer deactivation)流程，删除3GPP接入中的默认承载和所有的专有承载，但是P-GW会保持IP地址。或者，
步骤S403-b，PCEF根据所述指示信息和配置策略，删除通过非3GPP接入的连接，具体实现时PCEF所在的P-GW发起P-GW发起的资源分配去激活(P-GW initiated resource allocation deactivation)流程，删除非3GPP接入中的默认承载和所有的专有承载，但是P-GW会保持IP地址。
步骤404，PCEF向PCRF发送策略和计费规则提供响应信息。
需要说明的是，在执行步骤S403-a之前，PCEF可以将在3GPP接入中传输的业务流迁移到非3GPP接入中；或在执行步骤S403-b之前，PCEF可以将在非3GPP接入中传输的业务流迁移到3GPP接入中。
图5为本发明IP流迁移方法四实施例的流程示意图，如图5所示，本实施例的适用场景是所述指示信息包括以下任意一项或其组合：NBIFOM不支持的指示信息、NBIFOM不授权的指示信息或是删除至少一个接入网的指示信息的基础上，所述策略计费规则信息还可以包括，待删除的接入网的标识信息，本发明提供的IP流迁移方法，包括：需要说明 的是，PCRF实体设置在P-GW中。
步骤501、PCRF实体获取从多接入IP-CAN会话删除一个接入网的触发信息。
在本实施例中，触发信息可以包括:网络策略发生改变，或者，所述UE的签约信息发生改变。也就是说，PCRF确定基于网络的IP流迁移已不适用于该IP-CAN会话，其中，该IP-CAN会话包括在用户设备UE通过至少两个接入网与分组数据网络网关P-GW建立的多接入IP-CAN会话。
步骤502、所述PCRF实体向PCEF实体发送策略和计费规则提供消息，消息中携带从所述多接入IP-CAN会话删除一个接入网的指示信息。
在本实施例中，所述指示信息用以触发PCEF发起从所述多接入IP-CAN会话删除一个接入网的流程，其中，所述指示信息包括以下任意一项或其组合：NBIFOM不支持的指示信息、NBIFOM不授权的指示信息或是删除至少一个接入网的指示信息的基础上，所述指示信息还可以包括，待删除的接入网标识信息。其中，标识信息可以是IP-CAN类型指示信息(即3GPP_EPS或Non_3GPP_EPS)。
步骤503、所述PCEF根据所述指示信息，从已建立的多接入IP-CAN会话删除一个接入网。
具体的，若需要删除的接入网的指示信息指示3GPP接入网删除，则执行步骤S503-a；若需要删除的接入网的指示信息指示非3GPP接入网删除，则执行步骤S503-b。
步骤S503-a，删除通过3GPP接入的连接，具体实现时PCEF所在的P-GW发起P-GW发起的承载去激活(P-GW initiated bearer deactivation)流程，删除3GPP接入中的默认承载和所有的专有承载，但是P-GW会保持IP地址。
步骤S503-b，删除通过非3GPP接入的连接，具体实现时PCEF所在的P-GW发起P-GW发起的资源分配去激活(P-GW initiated resource allocation deactivation)流程，删除非3GPP接入中的默认承载和所有的专 有承载，但是P-GW会保持IP地址。
步骤504，PCEF向PCRF发送策略和计费规则提供响应信息。
需要说明的是，在执行步骤S703-a之前，PCEF可以将在3GPP接入中传输的业务流迁移到非3GPP接入中；或在执行步骤S703-b之前，PCEF可以将在非3GPP接入中传输的业务流迁移到3GPP接入中。
图6为本发明IP流迁移方法五实施例的流程示意图，如图6所示，本实施例的适用场景是所述指示信息包括图5所示实施例中指示信息的基础上，还可以包括：将在待删除接入网中传输的业务数据流迁移到剩下接入网，本发明提供的IP流迁移方法，包括：
步骤601、PCRF实体获取触发信息，该触发信息用以从多接入IP-CAN会话删除一个接入网的信息。
在本实施例中，触发信息可以包括:网络策略发生改变，或者，所述UE的签约信息发生改变。也就是说，PCRF确定基于网络的IP流迁移已不适用于该IP-CAN会话，其中，该IP-CAN会话包括在用户设备UE通过至少两个接入网与分组数据网络网关P-GW建立的多接入IP-CAN会话。
步骤602、所述PCRF实体向PCEF实体发送策略和计费规则提供消息，策略和计费规则提供消息中携带从所述多接入IP-CAN会话删除一个接入网的指示信息。所述指示信息还可以包括，待删除的接入网标识信息和将在待删除的接入网中传输的业务数据流迁移到剩下接入网的指示信息。
在本实施例中，所述指示信息用以触发PCEF从所述多接入IP-CAN会话删除一个接入网，其中，所述指示信息，包括以下任意一项或其组合：NBIFOM不支持的指示信息、NBIFOM不授权的指示信息或是删除至少一个接入网的指示信息。所述指示信息还可以包括，待删除的接入网标识信息和将在待删除的接入网中传输的业务数据流迁移到剩下接入网的指示信息。
步骤603、所述P-GW根据所述指示信息，将在待删除的接入网中传 输的业务数据流迁移到剩下接入网(该指示信息可以是将业务数据流从待删除的接入网迁移到剩下接入网的PCC规则)，删除待删除的接入网标识信息标识的接入网。
具体的，若需要删除的接入网的指示信息指示删除3GPP接入，则执行步骤603-a1和603-a2；若需要删除的接入网的指示信息指示删除非3GPP接入，则执行步骤603-b1和S603-b2。
步骤S603-a1、PCEF根据PCC规则，将在3GPP接入中传输的业务数据流迁移到非3GPP接入中；
步骤S603-a2、PCEF删除通过3GPP接入的连接，具体实现时PCEF所在的P-GW发起P-GW发起的承载去激活(P-GW initiated bearer deactivation)流程，删除3GPP接入中的默认承载和所有的专有承载，但是P-GW会保持IP地址。
步骤S603-b1、PCEF根据PCC规则，将在非3GPP接入中传输的业务数据流迁移到3GPP接入中；
步骤S603-b2、PCEF删除通过非3GPP接入的连接，具体实现时PCEF所在的P-GW发起P-GW发起的资源分配去激活(P-GW initiated resource allocation deactivation)流程，删除非3GPP接入中的默认承载和所有的专有承载，但是P-GW会保持IP地址。
步骤604，PCEF向PCRF发送策略和计费规则提供响应信息。
图7为本发明IP流迁移装置一实施例的流程示意图，如图7所示，本发明提供的IP流迁移装置，包括：获取模块71、确定模块72和发送模块73。其中，
获取模块71，设置为获取触发信息，所述触发信息包括从多接入IP-CAN会话删除一个接入网的信息；
确定模块72，设置为根据所述移触发信息，确定向策略和计费执行功能PCEF实体发送指示信息，所述指示信息包括指示所述PCEF实体从所述多接入IP-CAN会话删除一个接入网，以使所述PCEF实体发起删除一 个接入网的流程。
在本实施例中，策略和计费规则功能PCRF实体获取策略和计费规则功能PCRF实体获取触发信息，所述触发信息包括从所述多接入IP-CAN会话删除一个接入网的信息；所述PCRF实体根据所述触发信息，确定向策略和计费执行功能PCEF实体发送指示信息，所述指示信息包括指示所述PCEF实体从所述多接入IP-CAN会话删除一个接入网，以使所述PCEF实体发起从所述多接入IP-CAN会话删除一个接入网的流程。。实现了在网络策略发生改变时，或UE签约发生改变时，从多接入IP-CAN会话的删除一个接入网。避免了网络策略发生改变时，或UE签约发生改变时，无法取消IP流迁移的问题。
在上述实施例的基础上，所述指示信息，包括以下任意一项或其组合：NBIFOM不支持的指示信息、NBIFOM不授权的指示信息、删除至少一个接入网的指示信息。
进一步的，在上述实施例的基础上，所述指示信息，还包括：待删除接入网的标识信息。
进一步的，在上述实施例的基础上，所述待删除的接入网标识信息包括所述待删除接入网的IP-CAN类型信息。
进一步的，在上述实施例的基础上，所述指示信息还包括：将在待删除接入网中传输的业务数据流迁移到剩下接入网中的指示信息，所述剩下接入网包括所述至少两个接入网中除待删除接入网的接入网。
进一步的，在上述实施例的基础上，所述触发信息包括:网络策略发生改变的信息，或者，所述UE的签约信息发生改变的信息。
在本实施例中，实现了在网络策略发生改变时，或UE签约发生改变时，从多接入IP-CAN会话的删除一个接入网。避免了网络策略发生改变时，或UE签约发生改变时，无法取消IP流迁移的问题。
图8为本发明IP流迁移装置二实施例的流程示意图，如图8所示，本发明提供的IP流迁移装置，包括：接收模块81和迁移模块82。其中，
接收模块81，设置为接收策略和计费规则功能PCRF实体发送的指示信息，所述指示信息包括指示所述PCEF实体从多接入IP-CAN会话删除一个接入网的指示信息；
删除模块82，设置为根据指示信息，发起从所述多接入IP-CAN会话删除一个接入网的流程。
在本实施例中，策略和计费执行功能实体PCEF接收策略和计费规则功能PCRF实体发送的指示信息，所述指示信息用以触发PCEF发起从多接入IP-CAN会话删除一个接网的流程；所述PCEF根据所述指示信息，发起从多接入IP-CAN会话删除一个接网的流程。实现了在网络策略发生改变时，或UE签约发生改变时，从多接入IP-CAN会话的删除一个接入网。避免了网络策略发生改变时，或UE签约发生改变时，无法取消IP流迁移的问题。
在上述实施例的基础上，所述指示信息包括以下任意一项或其组合：NBIFOM不支持的指示信息、NBIFOM不授权的指示信息或是删除至少一个接入网连接的指示信息；
所述删除模块，具体根据指示信息，发起从所述多接入IP-CAN会话删除一个接入网的流程。
进一步的，在上述实施例的基础上，所述指示信息包括以下任意一项或其组合：NBIFOM不支持的指示信息、NBIFOM不授权的指示信息、删除至少一个接入网连接的指示信息。
进一步的，在上述实施例的基础上，所述指示信息，还包括：待删除接入网的标识信息。
进一步的，在上述实施例的基础上，所述待删除接入的网标识信息包括所述待删除接入网的IP-CAN类型信息。
进一步的，在上述实施例的基础上，所述指示信息还包括：将在待删除接入网中传输的业务数据流迁移到剩下接入网中的指示信息，所述剩下接入网包括所述至少两个接入网中除待删除接入网的接入网。
在本实施例中，实现了在网络策略发生改变时，或UE签约发生改变时，从多接入IP-CAN会话的删除一个接入网。避免了网络策略发生改变时，或UE签约发生改变时，无法取消IP流迁移的问题。
本发明还提供一种IP流迁移系统，包括：如图7所示的IP流迁移装置和如图8所示的IP流迁移装置。
虽然本发明所揭露的实施方式如上，但所述的内容仅为便于理解本发明而采用的实施方式，并非用以限定本发明。任何本发明所属领域内的技术人员，在不脱离本发明所揭露的精神和范围的前提下，可以在实施的形式及细节上进行任何的修改与变化，但本发明的专利保护范围，仍须以所附的权利要求书所界定的范围为准。
工业实用性
本发明实施例包括策略和计费规则功能PCRF实体获取策略和计费规则功能PCRF实体获取触发信息，所述触发信息包括从所述多接入IP-CAN会话删除一个接入网的信息；所述PCRF实体根据所述触发信息，确定向策略和计费执行功能PCEF实体发送指示信息，所述指示信息包括指示所述PCEF实体从所述多接入IP-CAN会话删除一个接入网，以使所述PCEF实体发起从所述多接入IP-CAN会话删除一个接入网的流程。实现了在网络策略发生改变时，或UE签约发生改变时，从多接入IP-CAN会话的删除一个接入网。避免了网络策略发生改变时，或UE签约发生改变时，无法取消IP流迁移的问题。

Claims (23)

  1. 一种IP流迁移方法，应用在用户设备UE通过至少两个接入网与分组数据网络网关P-GW建立多接入IP连接接入网IP-CAN会话的场景下，包括：
    策略和计费规则功能PCRF实体获取触发信息，所述触发信息包括从所述多接入IP-CAN会话删除一个接入网的信息；
    所述PCRF实体根据所述触发信息，确定向策略和计费执行功能PCEF实体发送指示信息，所述指示信息包括指示所述PCEF实体从所述多接入IP-CAN会话删除一个接入网，以使所述PCEF实体发起从所述多接入IP-CAN会话删除一个接入网的流程。
  2. 根据权利要求1所述的方法，其中，所述指示信息包括以下任意一项或其组合：
    基于网络的IP流迁移NBIFOM不支持的指示信息、NBIFOM不授权的指示信息、删除至少一个接入网的指示信息。
  3. 根据权利要求1或2所述的方法，其中，所述指示信息还包括：待删除接入网标识信息。
  4. 根据权利要求3所述的方法，其中，所述待删除接入网标识信息包括所述待删除接入网的IP-CAN类型信息。
  5. 根据权利要求3或4所述的方法，其中，所述指示信息还包括：将所述待删除接入网中传输的业务数据流迁移到剩下接入网中的指示信息，所述剩下接入网包括所述至少两个接入网中除待删除接入网的接入网。
  6. 根据权利要求1-5任一项所述的方法，其中，所述触发信息包括：网络策略发生改变的信息，或者，所述UE的签约信息发生改变的信息。
  7. 一种IP流迁移方法，应用在用户设备UE通过至少两个接入网与分组数据网络网关P-GW建立多接入IP连接接入网IP-CAN会话 的场景下，包括：
    策略和计费执行功能PCEF实体接收策略和计费规则功能PCRF实体发送的指示信息，所述指示信息包括指示所述PCEF实体从多接入IP-CAN会话删除一个接入网的指示信息；
    所述PCEF实体根据所述指示信息，发起从所述多接入IP-CAN会话删除一个接入网的流程。
  8. 根据权利要求7所述的方法，其中，所述指示信息包括以下任意一项或其组合：基于网络的IP流迁移NBIFOM不支持的指示信息、NBIFOM不授权的指示信息、删除至少一个接入网的指示信息。
  9. 根据权利要求7或8所述的方法，其中，所述指示信息，还包括：待删除接入网标识信息。
  10. 根据权利要求9所述的方法，其中，所述待删除接入网标识信息包括所述待删除接入网的IP-CAN类型信息。
  11. 根据权利要求9或10所述的方法，其中，所述指示信息，还包括：将待删除接入网中传输的业务数据流迁移到剩下接入网中的指示信息，所述剩下接入网包括所述至少两个接入网中除待删除接入网的接入网。
  12. 一种IP流迁移装置，包括：
    获取模块，设置为获取触发信息，所述触发信息包括从多接入IP-CAN会话删除一个接入网的信息；
    确定模块，设置为根据所述触发信息，确定向策略和计费执行功能PCEF实体发送指示信息，所述指示信息包括指示所述PCEF实体从所述多接入IP-CAN会话删除一个接入网，以使所述PCEF实体发起删除一个接入网的流程。
  13. 根据权利要求12所述的装置，其中，所述指示信息，包括以下任意一项或其组合：NBIFOM不支持的指示信息、NBIFOM不授权 的指示信息、删除至少一个接入网的指示信息。
  14. 根据权利要求12或13所述的装置，其中，所述指示信息，还包括：待删除接入网标识信息。
  15. 根据权利要求14所述的装置，其中，所述待删除的接入网标识信息包括所述待删除接入网的IP-CAN类型信息。
  16. 根据权利要求14或15所述的方法，其中，所述指示信息还包括：将待删除接入网中传输的业务数据流迁移到剩下接入网中的指示信息，所述剩下接入网包括所述至少两个接入网中除待删除接入网的接入网。
  17. 根据权利要求12-16任一项所述的装置，其中，所述触发信息包括:网络策略发生改变的信息，或者，所述UE的签约信息发生改变的信息。
  18. 一种IP流迁移装置，包括：
    接收模块，设置为接收策略和计费规则功能PCRF实体发送的指示信息，所述指示信息包括指示所述PCEF实体从多接入IP连接接入网IP-CAN会话删除一个接入网的指示信息；
    删除模块，设置为根据所述指示信息，发起从所述多接入IP-CAN会话删除一个接入网的流程。
  19. 根据权利要求18所述的装置，其中，所述指示信息包括以下任意一项或其组合：NBIFOM不支持的指示信息、NBIFOM不授权的指示信息、删除至少一个接入网连接的指示信息。
  20. 根据权利要求19所述的装置，其中，所述指示信息，还包括：待删除接入网标识信息。
  21. 根据权利要求20所述的装置，其中，所述待删除接入网标识信息包括所述待删除接入网的IP-CAN类型信息。
  22. 根据权利要求20或21所述的方法，其中，所述指示信息， 还包括：将待删除接入网中传输的业务数据流迁移到剩下接入网中的指示信息，所述剩下接入网包括所述至少两个接入网中除待删除接入网的接入网。
  23. 一种IP流迁移系统，包括：如权利要求12-17所述的IP流迁移装置和如权利要求18-22所述的IP流迁移装置。
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