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WO2010081329A1 - 业务流迁移过程中对网络资源进行控制的方法和系统 - Google Patents

业务流迁移过程中对网络资源进行控制的方法和系统 Download PDF

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Publication number
WO2010081329A1
WO2010081329A1 PCT/CN2009/073638 CN2009073638W WO2010081329A1 WO 2010081329 A1 WO2010081329 A1 WO 2010081329A1 CN 2009073638 W CN2009073638 W CN 2009073638W WO 2010081329 A1 WO2010081329 A1 WO 2010081329A1
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WIPO (PCT)
Prior art keywords
network
resource
gateway
control information
bearer
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PCT/CN2009/073638
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English (en)
French (fr)
Inventor
周娜
毕以峰
宗在峰
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ZTE Corp
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ZTE Corp
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/60Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H04L67/61Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources taking into account QoS or priority requirements

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a method for controlling network resources when a service flow is migrated.
  • the 3rd Generation Partnership Project (3GPP) Evolved Packet System is an Evolved Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio Access Network).
  • E-UTRAN Mobility Management Entity (MME), Serving Gateway (S-GW), Packet Data Network Gateway (P-GW or PDN GW), Home Subscriber Server (HSS), 3GPP Authentication and Authorization and Accounting (AAA), Policy and Charging Rules Function (referred to as PCRF) consists of entities and other supporting nodes.
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • P-GW or PDN GW Packet Data Network Gateway
  • HSS Home Subscriber Server
  • AAA 3GPP Authentication and Authorization and Accounting
  • PCRF Policy and Charging Rules Function
  • the MME is responsible for control planes such as mobility management, processing of non-access stratum signaling, and management of user mobility management context
  • GW is an access gateway device connected to E-UTRAN, which forwards data between E-UTRAN and P-GW, and is responsible for buffering paging waiting data
  • P-GW is EPS and packet data network (Packet Data Network) , referred to as PDN)
  • PDN packet data network
  • the border gateway of the network responsible for PDN access and forwarding data between EPS and PDN
  • PCRF is a policy and charging rule function entity, which receives the interface Rx and the carrier network protocol (Internet Protocol, For example, the IP service network is connected to obtain the service information.
  • the gateway device in the network through the Gx/Gxa/Gxc interface, and is responsible for initiating the establishment of the IP bearer and ensuring the quality of service data (Quality of Service, referred to as QoS), and charge control.
  • QoS Quality of Service
  • EPS supports interworking with non-3GPP systems, where interworking with non-3GPP systems passes S2a/b/c Interface implementation, P-GW acts as an anchor between 3GPP and non-3GPP systems.
  • non-3GPP systems are classified into trusted non-3GPP IP access and untrusted non-3GPP IP access.
  • the trusted non-3GPP IP access can be directly connected to the P-GW through the S2a interface; the untrusted non-3GPP IP access needs to be connected to the P-GW through an Evolved Packet Data Gateway (ePDG), ePDG and
  • ePDG Evolved Packet Data Gateway
  • the S2c provides user plane-related control and mobility support between the user equipment (User Equipment, UE for short) and the P-GW.
  • the supported mobility management protocol supports dual stacks.
  • Mobile IPv6 Moblie IPv6 Support for Dual Stack Hosts and Routers, referred to as DSMIPv6.
  • the Policy and Charging Enforcement Function (PCEF) entity exists in the P-GW, and the Gx interface between the PCRF and the P-GW (see Figure 1) exchanges information.
  • PCEF Policy and Charging Enforcement Function
  • the S-GW also has a Bearer Binding and Event Report Function (BBERF) entity to perform QoS control on the service data flow, S-
  • BBERF Bearer Binding and Event Report Function
  • S- The information is exchanged between the GW and the PCRF through the Gxc interface (see Figure 1).
  • the BBERF is also resident in the trusted non-3GPP access gateway.
  • the trusted non-3GPP access gateway exchanges information with the PCRF through the Gxa interface (see Figure 1).
  • the S9 interface functions as an interface between the home PCRF and the visited PCRF, and provides an application function (Application Function, abbreviated as AF) for the UE, and sends the policy and charging control to the PCRF through the Rx interface.
  • Policy and Charging Control (referred to as PCC) policy business information.
  • PCC Policy and Charging Control
  • the corresponding PDN network can be found through the Access Point Name (APN).
  • a connection from a UE to a PDN network is usually referred to as an IP Connectivity Access Network (IP-Access) network.
  • IP-Access IP Connectivity Access Network
  • the BBERF and the PCEF respectively establish a Diameter session with the PCRF, and through these Diameter sessions, the policy charging information and the information for formulating the policy for controlling the IP-CAN session are transmitted.
  • the EPS supports the UE to access one PDN through multiple access networks at the same time, that is, Multiple Access.
  • the UE accesses the PDN through the same P-GW through the non-3GPP IP access network and the 3GPP access network under the coverage of the non-3GPP and 3GPP access.
  • the P-GW allocates an IP address to the UE, that is, there is only one IP-CAN session between the UE and the PDN. In this way, the data stream of different services requested by the UE can be transmitted in the access network suitable for its transmission.
  • the service data streams of Http and Ftp can access the network through the WiFi, and at the same time, the service data stream of the VoIP can be sent to the UE through the 3GPP.
  • services with lower real-time requirements such as Http and Ftp can take advantage of lower WiFi tariffs
  • services with higher real-time requirements for VoIP can take advantage of 3GPP QoS control and better mobility management.
  • users can use multiple services through different access systems at the same time. They can also dynamically migrate these service flows between access systems.
  • traffic flow migration may be wireless signal coverage factors (eg, multiple wireless signal coverage in 3GPP and non-3GPP indoors, and only 3GPP network signals in outdoor), when the covered network signal changes.
  • traffic flow migration may be wireless signal coverage factors (eg, multiple wireless signal coverage in 3GPP and non-3GPP indoors, and only 3GPP network signals in outdoor), when the covered network signal changes, Continuing to use certain services, the user wants to migrate some of the services in the source network to the target network. After the service migration ends, all the information related to the user in the source network should be released. In addition, service flow migration can also be caused by the user's will. At this time, the user is in the coverage of multiple access networks.
  • a solution to the existing network is to establish a default bearer first, and then perform a dedicated bearer setup.
  • Migration is a wireless signal coverage factor (eg, there are multiple wireless signal coverages in 3GPP and non-3GPP in the room, and only 3GPP network signals in the outdoor), which may make the bearer setup time longer.
  • the existing network can also establish the default bearer and the dedicated bearer together, and then let the user initiate the deletion of the service that is not desired to be migrated.
  • the method not only prolongs the flow migration process, increases the network processing burden, but may also Users charge more business usage fees, which reduces the user experience.
  • the present invention provides a method for controlling network resources during stream migration, so as to effectively enhance the controllable performance of network resources.
  • the present invention provides a method for controlling network resources during service flow migration, including: in a service flow migration process, a user terminal UE transmits resource control information to a gateway of a target network, and a gateway of a source network or a target network according to the The resource control information or the quality of service QoS policy corresponding to the resource control information controls the network resources of the network in which the network is located.
  • the gateway of the target network is a packet data network gateway P-GW shared by the source network and the target network;
  • the resource control information is a resource release indication;
  • the step of the source network or the gateway of the target network controlling the network resources of the network according to the resource control information or the QoS policy corresponding to the resource control information includes: the P-GW according to the The resource release indication determines whether to delete the source network resource from the network resource of the source network, and if so, performs a release operation.
  • the resource control information is transmitted by the UE through the network element in the process of establishing a default bearer, a 3GPP modify bearer resource, a trusted non-3GPP setup connection, an untrusted non-3GPP setup connection, or a 3GPP setup PDN connection.
  • the P-GW is a default bearer, a 3GPP modify bearer resource, a trusted non-3GPP setup connection, an untrusted non-3GPP setup connection, or a 3GPP setup PDN connection.
  • the process of modifying a bearer resource by the 3GPP is a process of establishing a dedicated bearer.
  • the bearer resource modification request sent by the UE to the mobility management unit MME carries the resource release indication, where the resource release indication sequentially passes the bearer resource modification request sent by the MME to the S-GW, and the S-GW sends the request to the P
  • the bearer resource modification request or the proxy binding update message sent by the GW is uploaded to the P-GW.
  • the P-GW acquires the resource release indication in the process of establishing the last dedicated bearer.
  • the resource release indication is carried by using a protocol configuration option PCO, including a network coverage identifier, a handover scenario identifier, a deletion operation identifier, or a network identifier of a resource to be released.
  • a protocol configuration option PCO including a network coverage identifier, a handover scenario identifier, a deletion operation identifier, or a network identifier of a resource to be released.
  • the resource control information is sent by the UE to a gateway of the target network in a process of default bearer establishment, PDN connection establishment, or dedicated bearer establishment, where the resource control information includes a need to be established and/or deleted.
  • the step of the source network or the gateway of the target network controlling the network resources of the network according to the resource control information or the QoS policy corresponding to the resource control information includes: The target network gateway initiates a setup operation of the corresponding bearer according to the QoS policy corresponding to the resource control information; the source network gateway releases the source network resource corresponding to the flow information.
  • the resource control information is transmitted by the UE to a target network gateway and a public gateway in a process of default bearer establishment, PDN connection establishment, or dedicated bearer establishment, where the public gateway refers to a packet data network gateway P-GW.
  • the resource control information includes flow information that needs to be established and/or deleted.
  • the step of the source network or the gateway of the target network controlling the network resources of the network according to the resource control information or the QoS policy corresponding to the resource control information includes: the target network gateway according to the QoS policy Initiating an establishing operation of the corresponding bearer; the P-GW releasing the source network resource corresponding to the flow information.
  • the quality of service QoS policy is obtained by the policy and charging rule function PCRF or statically configured.
  • the source network or the target network gateway refers to a gateway where the bearer binding and event reporting function BBERF or the policy and charging execution function PCEF is located.
  • the service flow information is carried by the protocol configuration option PC0, and includes a service template flow TFT information, a message filter identifier, or a QoS parameter.
  • the present invention also provides a system for controlling network resources when a service flow is migrated, where the system includes a gateway of the source network and a gateway of the target network, where
  • the gateway of the source network is configured to perform control operations on network resources of the source network according to resource control information or a quality of service QoS policy corresponding to the resource control information;
  • the gateway of the target network is configured to receive resource control information transmitted by the user terminal, and perform control operations on the network resources of the target network according to the received resource control information or a QoS policy corresponding to the resource control information.
  • the resource control information is a resource release indication
  • the system further includes: a mobility management unit MME and a serving gateway S-GW; wherein the MME is configured to receive a bearer resource modification request that is sent by the user terminal and that carries the resource release indication, and send the request to the S-GW;
  • the S-GW is configured to receive a bearer resource modification request that is sent by the MME and that carries a resource release indication, and send a bearer resource modification request or a proxy binding update message that carries a resource release indication to the P-GW;
  • the P-GW is configured to determine whether to delete the source network resource according to the resource release indication, and if yes, perform a release operation.
  • the gateway of the target network is configured to receive resource control information, and initiate a corresponding bearer according to the QoS policy corresponding to the received resource control information.
  • the gateway of the source network is configured to release source network resources corresponding to the service flow information.
  • the gateway of the target network is configured to receive resource control information, and initiate a corresponding bearer according to the QoS policy corresponding to the received resource control information.
  • the establishing operation is performed to release the source network resource corresponding to the service flow information.
  • the network resource is controlled by the network gateway.
  • the network gateway having the knowledge of the network resources of the source network and the target network acquires resource control information, and performs network resource according to the resource control information.
  • the control operation effectively saves the service flow migration process, improves the network operation efficiency, and effectively enhances the controllable performance of the network resources.
  • Figure 1 is a schematic diagram of the EPS system architecture.
  • Figure 2 is a schematic diagram of a multi-access scenario.
  • Figure 3 is a flow chart of the first embodiment of the present invention.
  • Embodiment 4 is a flow chart of Embodiment 2 of the present invention.
  • Figure 5 is a flow chart of the third embodiment of the present invention.
  • Figure 6 is a flow chart of Embodiment 4 of the present invention.
  • Figure 7 is a flow chart of Embodiment 5 of the present invention.
  • Figure 8 is a flow chart of Embodiment 6 of the present invention.
  • Figure 9 is a flow chart of Embodiment 7 of the present invention.
  • Figure 10 is a flow chart of Embodiment 8 of the present invention.
  • Figure 11 is a flow chart of Embodiment 9 of the present invention.
  • the user terminal UE transmits resource control information to a gateway of the target network, and the gateway of the source network or the target network according to the resource control information or corresponding
  • the quality of service QoS policy controls the network resources of the network in which it resides.
  • the method of the present invention can control the resources of the source network and the target network.
  • the source network referred to in the present invention refers to the network system before the service flow migration; the target network refers to the network system after the service flow migration.
  • the resource control information referred to in the present invention may be a resource release indication or a service flow information.
  • the resource release indication of the present invention indicates that the UE informs the network side whether it is necessary to release the UE-related resources of the source network, and does not judge the control (eg, establishment or deletion) of the target network resource, and only the public gateway P- in the target network.
  • the GW is aware of the source network resources of the UE. For example, the P-GW saves the bearer information of the UE in the source network. Therefore, the resource release indication needs to notify the P-GW during the process of establishing the target network bearer during the flow migration. - The GW determines whether to perform source network resource deletion and performs corresponding processing operations.
  • the resource control information is transmitted by the user terminal UE via the network element in the process of establishing a default bearer, a 3GPP modify bearer resource, a trusted non-3GPP setup connection, an untrusted non-3GPP setup connection, or a 3GPP setup PDN connection. P-GW.
  • a default bearer a 3GPP modify bearer resource
  • a trusted non-3GPP setup connection a trusted non-3GPP setup connection
  • an untrusted non-3GPP setup connection or a 3GPP setup PDN connection.
  • P-GW 3GPP setup PDN connection.
  • Embodiment 1 Figure 3 is a flow chart of the first embodiment of the present invention.
  • the UE first accesses the P-GW through the trusted non-3GPP access network. After the UE decides to migrate some service flows from the non-3GPP access network to the 3GPP access network, the default bearer establishment is performed in the 3GPP access network. Process.
  • the core network can use the PMIPv6 protocol, the GTP (General Tunneling Protocol) or the DSMIP protocol.
  • the scenario in which the 3GPP core network uses the PMIP protocol is taken as an example.
  • Other implementation scenarios, such as the use of the GTP and the DSMIP protocol are very similar to the embodiment, and do not affect the description of the present invention. Therefore, it is not repeated here.
  • the P-GW obtains the resource release indication in the following manner: when the 3GPP default bearer is established, the user terminal UE carries the resource release indication in an attach request sent by the node eNB; the resource release indication sequentially passes An attach request sent by the eNB to the mobility management unit MME, a default bearer request sent by the MME to the serving gateway S-GW, and a default bearer request or proxy binding sent by the S-GW to the P-GW. An update message is uploaded to the P-GW.
  • the specific steps of this embodiment are described as follows:
  • Step 301 The UE accesses through a trusted non-3GPP system, and related services are transmitted on the connection.
  • Step 302 The UE decides to migrate some service flows from the non-3GPP system to the 3GPP access system according to the local policy.
  • Step 303 The UE sends an attach request message to the MME, and carries a resource release indication.
  • Step 305 The MME sends a default bearer setup request message to the S-GW, and carries a resource release indication.
  • Step 306 The S-GW initiates a gateway control session establishment to the PCRF, and obtains the rule information required for the bearer binding.
  • Step 307 The S-GW sends a proxy binding update request message to the P-GW, where the proxy binding update request message carries the NAI, the APN, and the resource release indication.
  • Step 308 A Diameter session established between the P-GW of the PCEF and the PCRF is stored, and an "IP-CAN Session Modification" message is sent to the PCRF, and the PCRF returns an "IP-CAN Session Tampering Confirmation” message to the P-GW.
  • Step 309 the P-GW processes the binding update, and returns a "proxy binding acknowledgement" message to the S-GW, carrying the IP address assigned by the P-GW to the UE;
  • Step 310 The S-GW returns a default bearer setup confirmation message to the MME, where the default bearer setup acknowledgement message carries the IP address of the UE.
  • Step 311 The MME, the eNodeB, and the UE interact to establish a radio bearer.
  • Step 312 After the radio bearer is established, the MME sends an update bearer request to the S-GW, notifies the address information of the eNodeB, and the S-GW returns a response message.
  • Step 313 The P-GW initiates a non-3GPP access system resource release process according to the resource release indication carried in the Proxy Binding Update request message (see step 307). This release process can occur after step 308.
  • Embodiment 4 is a flow chart of Embodiment 2 of the present invention.
  • the UE has accessed the same P-GW through the trusted non-3GPP and the 3GPP access network. After the UE decides to migrate some service flows from the non-3GPP access network to the 3GPP access network, the UE initiates in the 3GPP access network. The process of establishing a proprietary bearer.
  • the GTP protocol is used between the S-GW and the P-GW through 3GPP access.
  • the P-GW obtains the resource release indication in the following manner:
  • the user equipment UE carries the resource in the bearer resource modification request sent by the mobility management unit MME.
  • a release indication the resource release indication is sequentially uploaded to the S-GW by using a bearer resource modification request sent by the MME to the S-GW, and the S-GW sends a bearer resource modification request to the P-GW or a proxy strap update message to the P-GW.
  • the S-GW After receiving the specific bearer setup request sent by the MME, the S-GW sends a proxy binding update message to the P-GW, and the P-GW responds to the S-GW with a binding acknowledgement message.
  • the specific steps of the second embodiment are described as follows:
  • Step 401 The UE accesses the same P-GW through the 3GPP and the non-3GPP access network, and related services are transmitted through the non-3GPP system.
  • Step 402 The UE decides to migrate some service flows from the non-3GPP system to the local policy.
  • Step 403 The UE sends a bearer resource modification request to the MME, to establish a dedicated bearer, where the resource release indication is carried.
  • Step 405 The S-GW sends a bearer resource modification request to the P-GW to establish a dedicated bearer, and carries a resource release indication.
  • Step 406 The P-GW interacts with the PCRF to start performing an IP-CAN session update.
  • Step 407 The P-GW initiates a process of establishing a dedicated bearer.
  • Step 408 After the establishment of the dedicated bearer is completed, the P-GW informs the PCRF policy execution result, and the IP-CAN session update ends.
  • Step 409 The P-GW initiates a non-3GPP system resource release process according to the resource release indication carried in the dedicated bearer setup request (see step 405). This release process can occur after step 406.
  • FIG. 5 is a flowchart of Embodiment 3 of the present invention.
  • the UE has accessed the same P-GW through the trusted non-3GPP and the 3GPP access network. After the UE decides to migrate some service flows from the non-3GPP access network to the 3GPP access network, the UE initiates in the 3GPP access network. The process of establishing a proprietary bearer. The PMIP protocol is adopted between the S-GW and the P-GW through 3GPP access. The specific steps are described as follows:
  • Step 501 The UE accesses the same P-GW through the 3GPP and the non-3GPP access network, and related services are transmitted through the non-3GPP system.
  • Step 502 The UE decides to migrate some service flows from the non-3GPP system to the 3GPP access system according to the local policy.
  • Step 503 The UE sends a bearer resource modification request to the MME, to establish a dedicated bearer, where the resource release indication is carried;
  • Step 504 The MME sends a bearer resource modification request to the S-GW to establish a dedicated bearer, and also carries a resource release indication.
  • Step 505 The S-GW initiates a request for a gating and a QoS policy to the PCRF.
  • Step 506 The S-GW sends a proxy binding update message to the P-GW, and carries a resource release indication.
  • Step 507 The P-GW returns a proxy binding update response.
  • Step 508 The S-GW initiates a process for establishing a 3GPP dedicated bearer.
  • Step 509 After the establishment of the dedicated bearer is completed, the S-GW informs the PCRF policy execution result, and the gating and QoS policy execution process ends.
  • Step 510 The PCRF updates the QoS policy to the P-GW.
  • Step 511 The P-GW initiates a non-3GPP system resource release process according to the resource release indication carried in the proxy binding update message (see step 506).
  • FIG. 6 is a flow chart of Embodiment 4 of the present invention.
  • the UE first accesses the EPS system through the 3GPP access network, and after the UE decides to migrate certain service flows from the 3GPP access network to the trusted non-3GPP access network, the connection establishment is performed in the trusted non-3GPP access network. Process.
  • the PMIPv6 protocol is used between the trusted non-3GPP access network and the P-GW.
  • the P-GW obtains the resource release indication in the following manner:
  • the user terminal UE carries the resource release indication in the attach request sent by the trusted non-3GPP access gateway.
  • the resource release indication is sent to the P-GW by using a proxy strap update message sent by the trusted non-3GPP access gateway to the P-GW.
  • Step 601 The UE accesses the EPS system through the 3GPP access network, and related services are transmitted on the connection, where the S-GW and the P-GW establish a data channel through the GTP or the PMIPv6 protocol.
  • Step 602 The UE decides to migrate some service flows from the 3GPP system to the non-3GPP access system according to the local policy.
  • Step 603 The UE performs a specific non-3GPP access procedure, and accesses the trusted non-3GPP access network.
  • Step 604 After the UE accesses the trusted non-3GPP access network, request the EPS access authentication from the HSS/AAA; after the HSS/AAA receives the EPS access authentication request, perform authentication on the requesting UE; After the HSS/AAA completes the authentication of the UE, sending, to the trusted non-3GPP access gateway, the APN that is selected by the P-GW and the UE that is selected in the 3GPP access, including the default APN;
  • Step 605 after the authentication succeeds, the attach procedure of layer 3 is triggered, and the UE provides trusted access.
  • the message sent by the gateway carries a resource release indication.
  • Step 606 Perform a gateway control session establishment process between the trusted non-3GPP access gateway and the PCRF.
  • Step 607 The trusted non-3GPP access gateway sends a proxy binding update request message to the P-GW, where the proxy binding update request message carries the NAI, the APN, and the resource release indication.
  • Step 608 Perform an IP-CAN session modification process between the P-GW and the PCRF.
  • Step 609 The P-GW returns a "proxy binding acknowledgement" message to the trusted non-3GPP access gateway, where the "proxy binding acknowledgement” message carries the IP address allocated by the P-GW to the UE;
  • Step 610 The trusted non-3GPP access gateway returns a response message to the UE, where the response message carries the IP address of the UE.
  • Step 611 The p_GW initiates a 3GPP access system resource release process according to the resource release indication carried in the proxy binding update request message (see step 607).
  • FIG. 7 is a flow chart of Embodiment 5 of the present invention.
  • the UE first accesses the EPS system through the 3GPP access network, and after the UE decides to migrate certain service flows from the 3GPP access network to the trusted non-3GPP access network, the connection establishment is performed in the trusted non-3GPP access network. Process. When the non-3GPP access is trusted, the UE uses DSMIPv6 access.
  • the P-GW obtains the resource release indication as follows:
  • the user terminal UE sends a strap update message to the P-GW, where the resource release indication is carried.
  • the specific steps in this embodiment are described as follows: Step 701: The UE accesses the EPS system through the 3GPP access network, and related services are transmitted on the connection, where the S-GW and the P-GW are established through the GTP or the PMIPv6 protocol. Data channel
  • Step 702 The UE decides to migrate some service flows from the 3GPP system to the non-local according to the local policy.
  • Step 703 layer 2 access.
  • the UE accesses the trusted non-3GPP access network, and the HSS/AAA performs access authentication and authorization for the UE;
  • the access system allocates an IP address to the UE as the care-of address CoA of the UE;
  • Step 705 The UE performs a DNS query according to the APN, and obtains an IP address of the P-GW that provides the access service network. A security association is established between the UE and the P-GW, and the home address HoA is assigned to the UE.
  • the P-GW interacts with the HSS to perform an authentication and authorization process;
  • Step 706 The UE sends a “Binding Update” request message to the P-GW, and carries a resource release indication.
  • Step 707 The P-GW returns a “Binding Confirmation” message to the trusted non-3GPP access gateway.
  • FIG 8 is a flow chart of Embodiment 6 of the present invention.
  • the UE first accesses the EPS system through the 3GPP access network. After the UE decides to migrate certain service flows from the 3GPP access network to the untrusted non-3GPP access network, the UE connects through the untrusted non-3GPP access network through the ePDG. Established process. When the non-trusted non-3GPP access is used, an IPSec tunnel is established between the UE and the ePDG, and PMIPv6 is used between the ePDG and the P-GW.
  • the P-GW obtains the resource release indication in this manner: when the untrusted non-3GPP connection is established, the tunnel establishment request sent by the user terminal UE to the ePDG carries the resource release message and is uploaded to the P- GW.
  • the specific steps of this embodiment are described as follows:
  • Step 801 The UE accesses the EPS system through the 3GPP access network, and related services are transmitted on the connection, where the S-GW and the P-GW establish a data channel through the GTP or the PMIPv6 protocol.
  • Step 802 The UE decides to migrate some service flows from the 3GPP system to the non-3GPP access system according to the local policy.
  • Step 803 The UE obtains an address of the ePDG through a DNS query, and initiates IKEv2 to the ePDG.
  • Step 804 After the authentication succeeds, the attach procedure of layer 3 is triggered, and the ePDG sends a “binding update” request message to the P-GW, and carries a resource release indication.
  • Step 805 the P-GW processes the binding update, returns a "binding acknowledgement" message to the ePDG, and brings the IP address assigned to the UE to the ePDG in the message;
  • Step 806 after the binding update is successfully completed, the ePDG is successfully authenticated by the UE, and the IPsec tunnel is established.
  • Step 807 The ePDG sends IKEv2 signaling, and brings the IP address allocated to the UE to the UE.
  • the IP connection from the UE to the P-GW is established.
  • Step 808 The P-GW initiates a 3GPP access system resource release process according to the resource release indication carried in the “Binding Update” request message (see step 804).
  • the process only needs to replace the attach request of FIG. 3 and FIG. 6 with the PDN connection establishment request, and the resource release indication is carried in the PDN connection establishment request, and is established with the default bearer.
  • the embodiment is very similar.
  • the P-GW obtains the resource release indication in the following manner:
  • the PDN connection request sent by the user terminal UE to the eNB carries the resource release indication, where the resource is Release the indication by the PDN connection request of the eNB to the MME, the establishment of the default bearer request sent by the MME to the S-GW, and the default bearer setup request or the proxy strap update message sent by the S-GW to the P-GW.
  • the P-GW obtains the resource release indication in the following manner:
  • the PDN connection request sent by the user terminal UE to the eNB carries the resource release indication, where the resource is Release the indication by the PDN connection request of the eNB to the MME, the establishment of the default bearer request sent by the MME to the S-GW, and the default bearer setup request or the proxy strap update message sent by the S-GW to the P-GW.
  • the source network represents the network system in which the traffic flow was prior to migration.
  • the indication may include one or more network identifiers of the resources that should be released.
  • the resource release indication needs to be carried when the last dedicated bearer is established.
  • the indication that the UE informs the P-GW to delete the source network resource may be carried in the message by using a protocol configuration option PCO, where the resource release indication may be: a network coverage identifier, a handover scenario identifier, a deletion operation identifier, a migration or/and a need Deleted stream information.
  • the resource release indication is carried by using a protocol configuration option PCO, including a network coverage identifier, a handover scenario identifier, a deletion operation identifier, or a network identifier to be released.
  • PCO protocol configuration option
  • the P-GW deletes the network resources related to the flow information to be migrated or/and deleted.
  • the P-GW does not obtain the resource release indication, or according to the indication that the source network resource does not need to be deleted, the P-GW does not initiate the release of the source network resource, or only releases the network bearer without any service flow transmission in the source network.
  • Embodiment 7 shows a scenario in which the resource control information is service flow information: Embodiment 7
  • FIG 9 is a flow chart of Embodiment 7 of the present invention.
  • the UE first accesses the P-GW through the trusted non-3GPP access network (the core network uses the PMIP protocol), and after the UE decides to migrate some service flows from the non-3GPP access network to the 3GPP access network, the UE is connected in the 3GPP.
  • the core network uses the GTP (General Tunneling Protocol) protocol.
  • GTP General Tunneling Protocol
  • the P-GW obtains the service flow information in the following manner:
  • the user terminal UE carries the attach request or the PDN connection setup request sent by the node eNB to carry the Traffic flow information, which in turn passes an attach request or a PDN connection establishment request sent by the eNB to the MME, a default bearer request sent by the MME to the S-GW, and a default bearer setup request of the S-GW to the P-GW or A proxy binding update message is uploaded to the P-GW.
  • the specific steps of this embodiment are described as follows:
  • Step 901 The UE accesses through a trusted non-3GPP system, and related services are transmitted on the connection.
  • Step 902 The UE decides to migrate some service flows from the non-3GPP system to the local policy according to the local policy.
  • Step 903 The UE sends an attach request message to the MME, and carries the service flow information that needs to be migrated or/and needs to be deleted.
  • Step 904 Perform UE access authentication and location update by using an HSS.
  • Step 905 The MME sends a default bearer setup request message to the S-GW, and carries the service flow information that needs to be migrated or/and needs to be deleted.
  • Step 906 The S-GW sends a default bearer setup request message to the P-GW, where the message carries service flow information to be migrated or/and deleted.
  • Step 907 The P-GW may interact with the PCRF to perform an IP-CAN session update to trigger a PCC decision corresponding to the flow information carried in step 906, that is, a QoS policy.
  • Step 908 The P-GW initiates a default bearer setup response. At the same time, the P-GW allocates the bearer layer QoS according to the QoS policy returned by the PCRF or uses the locally configured QoS policy, and initiates a dedicated bearer setup procedure corresponding to the migrated flow information.
  • Step 909 The S-GW sends a default bearer setup response to the MME, and a request for establishing a dedicated bearer.
  • Step 910 The MME, the eNodeB, and the UE interact to establish a radio bearer, including a default bearer and a dedicated bearer.
  • Step 911 After the radio bearer is established, the MME sends an update bearer request to the S-GW, notifies the address information of the eNodeB, and the S-GW returns a response message; and the S-GW sends a response to the P-GW in response to the dedicated bearer;
  • Step 912 The non-3GPP access gateway deletes the service flow from the existing bearer according to the QoS policy returned by the PCRF, and releases the network bearer without any service flow transmission in the non-3GPP access system, so as to perform control processing on the trusted non-3GPP connection.
  • the P-GW releases the resources corresponding to the non-3GPP access system according to the mobility information carried in step 906 to be migrated or/and to be deleted.
  • FIG 10 is a flowchart of Embodiment 8 of the present invention.
  • the UE first accesses the P-GW through the trusted non-3GPP access network (the core network uses the PMIPv6 protocol), and after the UE decides to migrate some service flows from the non-3GPP access network to the 3GPP access network, the UE is connected in the 3GPP.
  • the core network uses the PMIP protocol.
  • the S-GW obtains the service flow information in the following manner: when the 3GPP default bearer setup or the PDN connection is established, the user terminal UE carries the attach request or the PDN connection setup request sent by the node eNB to carry the The service flow information is sequentially set by the eNB to the MME to send an attach request or a PDN connection setup request, and the MME sends a default bearer request to the S-GW.
  • the specific steps of this embodiment are described as follows:
  • Step 1001 The UE accesses through a trusted non-3GPP system, and related services are transmitted on the connection.
  • Step 1003 The UE sends an attach request message to the MME, where the flow information that needs to be migrated or/and needs to be deleted is carried.
  • Step 1004 Perform UE access authentication and location update by using an HSS.
  • Step 1005 The MME sends a default bearer setup request message to the S-GW, and carries the flow information to be migrated or/and deleted.
  • Step 1006 The S-GW initiates a gateway control session establishment to the PCRF.
  • Step 1007 the S-GW sends a "Proxy Binding Update" request message to the P-GW, where the "Proxy Binding Update” request message carries the NAI and the APN;
  • Step 1008 A Diameter session established between the P-GW and the PCRF residing the PCEF, sending an "IP-CAN Session Modification” message to the PCRF, and the PCRF returns an "IP-CAN Session Modification Confirmation” message to the P-GW, carrying the QoS. rule.
  • Step 1009 The P-GW processes the binding update, and returns a “proxy binding acknowledgement” message to the S-GW, and carries the IP address allocated by the P-GW to the UE.
  • Step 1010 The PCRF interacts with the S-GW to perform a gateway control session modification process, and the S-GW sends the flow information to the PCRF in step 1005, and obtains the QoS rule corresponding to the migrated flow information.
  • Step 1011 The S-GW sends the QoS rule to the MME.
  • the default bearer establishes a response, and according to the QoS rule or the local policy returned by the PCRF, performs a dedicated bearer establishment process corresponding to the migrating flow information;
  • the MME, the eNodeB, and the UE interact to establish a radio bearer, including a default bearer and a dedicated bearer. ;
  • Step 1012 After the establishment of the dedicated bearer is completed, the P-GW informs the PCRF policy execution result, and the gateway control and the QoS rule execution process ends.
  • Step 1013 The trusted non-3GPP access gateway deletes the service flow from the existing bearer according to the QoS policy provided by the PCRF, and releases the network bearer without any service flow transmission in the non-3GPP access system, so as to control the trusted non-3GPP connection. deal with.
  • Example nine Figure 11 is a flow chart of Embodiment 9 of the present invention.
  • the UE first accesses the EPS system through the 3GPP access network (the core network uses the GTP protocol), and after the UE decides to migrate certain service flows from the 3GPP access network to the trusted non-3GPP access network, the trusted non-3GPP The process of establishing a connection in the access network.
  • the PMIPv6 protocol is used between the trusted non-3GPP access network and the P-GW.
  • Step 1101 The UE accesses the EPS system through the 3GPP access network, and related services are transmitted on the connection, where the S-GW and the P-GW establish a data channel through the GTP protocol.
  • Step 1102 The UE decides to migrate certain service flows from the 3GPP system to the non-3GPP access system according to the local policy.
  • Step 1103 The UE performs a specific non-3GPP access procedure, and accesses the trusted non-3GPP access network.
  • Step 1104 After the UE accesses the trusted non-3GPP access network, request the EPS access authentication from the HSS/AAA; after the HSS/AAA receives the EPS access authentication request, perform authentication on the requesting UE; After the HSS/AAA completes the authentication of the UE, sending, to the trusted non-3GPP access gateway, the APN that is selected by the P-GW and the UE that is selected in the 3GPP access, including the default APN;
  • Step 1105 After the authentication succeeds, the attach procedure of layer 3 is triggered, and the message sent by the UE to the trusted access gateway carries the flow information to be migrated or/and deleted.
  • Step 1106 Perform a gateway control session establishment process between the trusted non-3GPP access gateway and the PCRF.
  • Step 1107 the trusted non-3GPP access gateway sends a "proxy binding update” request message to the P-GW, where the "proxy binding update” request message carries the NAI and the APN;
  • Step 1108 Perform an IP-CAN session modification process between the P-GW and the PCRF.
  • Step 1109 The P-GW returns a "Proxy Binding Acknowledgement" message to the trusted non-3GPP access gateway, where the "Proxy Binding Acknowledgement” message carries the IP address assigned by the P-GW to the UE;
  • Step 1110 PCRF Interacting with the trusted non-3GPP access gateway to perform the gateway control session modification process, the trusted non-3GPP access gateway sends the flow information to the PCRF in step 1105, and the PCRF provides the trusted non-3GPP access gateway with the step 1105 carrying the required migration flow.
  • Information corresponding QoS rules
  • Step 1111 The trusted non-3GPP access gateway returns a response message to the UE, where the response message carries the IP address of the UE.
  • the trusted non-3GPP access gateway performs a corresponding bearer establishment process corresponding to the flow information to be migrated according to the QoS rule or the local policy returned by the PCRF;
  • Step 1112 The P-GW deletes the service flow from the existing bearer according to the QoS policy returned by the PCRF, and sends an update bearer request to the S-GW to perform the QoS update process of the 3GPP bearer.
  • the process of establishing a connection in the trusted non-3GPP access network is similar to the process of FIG. 10, and the description is not repeated here.
  • the process only needs to replace the attach request of FIG. 9, FIG. 10 and FIG. 11 with the PDN connection establishment request, and the migration flow or/and the flow information to be deleted is established in the PDN connection.
  • the carrying in the request is very similar to the embodiment established by the default bearer described above, and does not affect the description of the present invention. Therefore, the description is not repeated here.
  • the UE informs the P-GW that the service flow information can be carried by the PCO (Protocol Configuration Options) in the message; the UE informs the S-GW or the P-GW that the service flow information can be the service template flow TFT information.
  • the message filter identifier may also be a QoS parameter.
  • the service flow information may include flow information of one or more services.
  • the UE informs the network gateway that the service flow information includes service flow information to be established in the target network (the service flow is migrated from the source network to the target network) or needs to be in the source network.
  • the deleted service flow information, the target network or the source network gateway deletes the source network resources corresponding to the flows. If the flow information to be created is to be migrated from the source network to the target network, the corresponding resources of the source network should be deleted. Therefore, the flow information to be created may not be included in the flow information to be deleted.
  • the UE informs the network gateway that the service flow information may include flow operation information, such as a migration flow, a deletion flow, an increase flow, and the like;
  • the service flow information indicates that the UE informs the network side of the resource information that needs to be established in the target network (eg, Service flow) or / and need to delete the resource information of the source network (for example, traffic flow), therefore, it is necessary to judge and process the network elements in the source network and the target network that are known to these resources, and these processing network elements are
  • the target network eg, Service flow
  • the source network for example, traffic flow
  • the processing network element is the network entity where the PCEF is located (ie, the P-GW), if With the PCC architecture with BBERF (for example, the PMIP protocol is used between the S-GW and the P-GW), the processing network element is the network entity where the BBERF is located (ie, the S-GW or the non-3GPP access gateway).
  • the PCC architecture without BBERF for example, the GTP protocol is used between the S-GW and the P-GW
  • the processing network element is the network entity where the BBERF is located (ie, the S-GW or the non-3GPP access gateway).
  • the PCRF For the establishment of the resource, the PCRF notifies the target network P-GW of the corresponding QoS policy, and the P-GW determines to establish the resource;
  • the PCRF For the deletion of the resource, when the source network uses the PCC architecture with the BBERF, the PCRF notifies the corresponding QoS policy of the network element where the BBERF of the source network is located, and the network element determines whether to delete the corresponding resource; When the PCC architecture of the BBERF is used, the PCRF notifies the corresponding QoS policy of the network element where the PCEF is located. The NE determines whether to delete the corresponding resource.
  • the target network uses the PCC architecture with BBERF
  • the service flow information needs to be brought to the S-GW or the non-3GPP access gateway, and the resource is controlled by the interaction with the PCRF;
  • the PCRF For the establishment of the resource, the PCRF notifies the target network S-GW or the non-3GPP access gateway of the corresponding QoS policy, and the S-GW or the non-3GPP access gateway determines to establish the resource;
  • the PCRF For the deletion of the resource, when the source network uses the PCC architecture with the BBERF, the PCRF notifies the corresponding QoS policy of the network element where the BBERF of the source network is located, and the network element determines whether to delete the corresponding resource; When the PCC architecture of the BBERF is used, the PCRF notifies the corresponding QoS policy of the network element where the PCEF is located. The NE determines whether to delete the corresponding resource.
  • the service flow information needs to be brought to the public gateway (such as the P-GW) and the network entity where the PCEF is located, and the processing network element established by the resource is the network entity where the PCEF is located; If the PCC architecture with BBERF is used, the service flow information needs to be brought to the public gateway (such as P-GW) and the network entity where the BBERF is located, and the processing network element established by the resource The network entity where BBERF is located.
  • the processing network element is a public gateway (such as P-GW).
  • the resource control information is sent by the UE to the gateway of the target network when the default bearer is established or the PDN connection is established or the dedicated bearer is established, and the resource control information includes flow information that needs to be established and/or deleted.
  • the control operation of the network resource is performed in the following manner: the target network gateway initiates a setup operation of the corresponding bearer according to the QoS policy corresponding to the resource control information; and the source network gateway releases the source network resource corresponding to the flow information.
  • the resource control information is transmitted by the UE to a target network gateway and a public gateway when a default bearer setup, a PDN connection setup, or a dedicated bearer setup, where the public gateway refers to a packet data network gateway P-GW, and the resource control
  • the information includes the flow information that needs to be established and/or needs to be deleted; the control operation of the network resource is performed as follows: the target network gateway initiates a setup operation of the corresponding bearer according to the QoS policy; and the P-GW releases the flow information correspondingly Source network resources.
  • the source network or the target network gateway mentioned here refers to the gateway where the bearer binding and event reporting function BBERF or the policy and charging execution function PCEF is located, that is, the S-GW or the non-3GPP access gateway.
  • the above-mentioned quality of service QoS policy is obtained through the policy and charging rule function PCRF, or it can be statically configured.
  • the present invention also provides a system for controlling network resources during service flow migration, the system mainly includes: a gateway of a source network and a gateway of a target network, where
  • the gateway of the source network is configured to perform control operations on the network resources of the source network according to the resource control information or the quality of service QoS policy corresponding to the resource control information;
  • the gateway of the target network is configured to receive the resource control information transmitted by the user terminal, and perform control operations on the network resources of the target network according to the received resource control information or the quality of service QoS policy corresponding to the resource control information.
  • the resource control information is a resource release indication or service flow information
  • the system further includes: a mobility management unit MME and a serving gateway S-GW, when the control information is a resource release indication.
  • a mobility management unit MME and a serving gateway S-GW when the control information is a resource release indication.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the method for controlling the network resource is: when the service flow is migrated, the resource control information obtained by the network gateway having the knowledge of the network resources of the source network and the target network is obtained, and the network resource is obtained according to the resource control information.
  • the control operation is performed, thereby effectively saving the business flow migration process, improving the network operation efficiency, and effectively enhancing the controllable performance of the network resources.
  • the method for controlling network resources during traffic flow migration according to the present invention, the resource control information acquired by the network gateway having knowledge of the network resources of the source network and the target network, and the network resources are performed according to the resource control information.
  • the control operation effectively saves the service flow migration process, improves the network operation efficiency, and effectively enhances the controllable performance of the network resources.

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Description

业务流汙移过稈中对网络资源进行捽制的方法和系统
技术领域
本发明涉及移动通信领域, 具体涉及一种业务流迁移时对网络资源进行 控制的方法。
背景技术
第三代合作伙伴计划 ( 3rd Generation Partnership Project, 简称为 3GPP ) 演进的分组系统( Evolved Packet System , 简称为 EPS ) 由演进的通用移动 通信系统陆地无线接入网 ( Evolved Universal Terrestrial Radio Access Network, 简称为 E-UTRAN ) 、 移动管理单元( Mobility Management Entity, 简称为 MME ) 、 服务网关 ( Serving Gateway, S-GW ) 、 分组数据网络网关 ( Packet Data Network Gateway, 简称为 P-GW或者 PDN GW)、 归属用户服 务器 (Home Subscriber Server , 简称为 HSS ) 、 3GPP 的认证授权计费 ( Authentication、 Authorization and Accounting , 简称为 AAA )月良务器、 策略 和计费规则功能( Policy and Charging Rules Function, 简称为 PCRF ) 实体及 其他支撑节点组成。
图 1是根据相关技术的 EPS的系统架构的示意图, 如图 1所示, MME 负责移动性管理、 非接入层信令的处理和用户移动管理上下文的管理等控制 面的相关工作; S-GW是与 E-UTRAN相连的接入网关设备, 在 E-UTRAN和 P-GW之间转发数据, 并且负责对寻呼等待数据进行緩存; P-GW则是 EPS 与分组数据网络( Packet Data Network, 简称为 PDN ) 网络的边界网关, 负 责 PDN的接入及在 EPS与 PDN间转发数据等功能; PCRF是策略和计费规 则功能实体, 它通过接收接口 Rx和运营商网络协议( Internet Protocol , 简称 为 IP )业务网络相连, 获取业务信息, 此外, 它通过 Gx/Gxa/Gxc接口与网络 中的网关设备相连, 负责发起 IP承载的建立, 保证业务数据的服务质量 ( Quality of Service , 简称为 QoS ) , 并进行计费控制。
EPS支持与非 3GPP系统的互通,其中,与非 3GPP系统的互通通过 S2a/b/c 接口实现, P-GW作为 3GPP与非 3GPP系统间的锚点。在 EPS的系统架构图 中, 非 3GPP系统被分为可信任非 3GPP IP接入和不可信任非 3GPP IP接入。 可信任非 3GPP IP接入可直接通过 S2a接口与 P-GW连接;不可信任非 3GPP IP接入需经过演进的分组数据网关 (Evolved Packet Data Gateway, 简称为 ePDG )与 P-GW相连, ePDG与 P-GW间的接口为 S2b , S2c提供了用户设 备( User Equipment, 简称为 UE )与 P-GW之间的用户面相关的控制和移动 性支持, 其支持的移动性管理协议为支持双栈的移动 IPv6 ( Moblie IPv6 Support for Dual Stack Hosts and Routers , 简称为 DSMIPv6)。
在 EPS系统之中,策略和计费执行功能( Policy and Charging Enforcement Function, 简称为 PCEF )实体存在于 P-GW中, PCRF与 P-GW之间 Gx接口 (见图 1 )交换信息。 当 P-GW与 S-GW间的接口基于 PMIPv6时, S-GW也 具有承载绑定和事件报告功能 ( Bearer Binding and Event Report Function, 简 称为 BBERF ) 实体对业务数据流进行 QoS控制, S-GW与 PCRF之间通过 Gxc接口 (见图 1 )交换信息。 当通过可信任非 3GPP接入系统接入时, 可信 任非 3GPP接入网关中也驻留 BBERF。 可信任非 3GPP接入网关与 PCRF之 间通过 Gxa接口(见图 1 )交换信息。当 UE漫游时, S9接口作为归属地 PCRF 和拜访地 PCRF的接口,同时为 UE提供业务的应用功能( Application Function, 简称为 AF ) ,通过 Rx接口向 PCRF发送用于制定策略和计费控制( Policy and Charging Control, 简称为 PCC )策略的业务信息。 在 3GPP中, 通过接入点 名称( Access Point Name , 简称为 APN )可以找到对应的 PDN网络。 通常将 UE到 PDN网络的一个连接称为一个 IP连接接入网 ( IP Connectivity Access Network, 简称为 IP-CAN )会话。 在建立 IP-CAN会话的过程中, BBERF和 PCEF分别与 PCRF之间建立 Diameter会话, 通过这些 Diameter会话来传送 对这个 IP-CAN会话进行控制的策略计费信息和用于制定策略的信息等。
EPS支持 UE同时通过多个接入网接入一个 PDN,即 Multiple Access (多 接入)。如图 2所示, UE同时在非 3GPP和 3GPP接入的覆盖下,通过非 3GPP IP接入网和 3GPP接入网通过同一个 P-GW接入到 PDN。在这种场景下, P-GW 为 UE分配一个 IP地址, 即 UE和 PDN之间只有一个 IP-CAN会话。 这样, UE请求的不同业务的数据流可以在适合它传输的接入网中传输。 例如非 3GPP接入网是 WiFi时 , Http和 Ftp的业务数据流就可以通过 WiFi接入网 , 而与此同时 VoIP的业务数据流就可以通过 3GPP发送给 UE。 这样对于 Http 和 Ftp这种实时性要求较低的业务可以发挥 WiFi 资费较低的优势, 而对于 VoIP这种实时性要求较高的业务可以发挥 3GPP的 QoS控制,移动性管理较 好的优势。
在多接入场景下, 用户可以同时通过不同的接入系统使用多种业务, 还 可以将这些业务流在接入系统之间实现动态迁移。 导致业务流迁移的原因有 多种, 可以是无线信号覆盖因素(如, 室内存在 3GPP和非 3GPP的多种无线 信号覆盖, 而室外仅有 3GPP 网络信号) , 当覆盖的网络信号发生变化, 为 了继续使用某些业务, 用户希望将源网络中的部分业务迁移至目标网络, 业 务迁移结束后应释放源网络中该用户相关的所有信息。 此外, 业务流迁移也 可以由用户意愿导致, 此时用户处于多种接入网的覆盖范围, 考虑到某些业 务运作速率不佳, 决定将该业务从源网络迁移至另一种接入系统进行传输, 这种情况下, 应对源网络中其他业务予以保留, 而不能如无线信号覆盖情况 删除源网络中该用户所有信息。 然而, 当业务流在不同系统之间进行迁移时, 现有网络无法对业务流迁移因素作出判断, 从而也不能得知是否需要释放源 网络用户相关信息, 导致网络资源无法得以较好地控制和管理。
在用户希望迁移部分业务流的情况下, 由于网络无法得知用户希望迁移 哪些业务流, 对此, 现有网络一种解决方法则是先建立默认承载, 再进行专 有承载建立, 当业务流迁移是无线信号覆盖因素 (如, 室内存在 3GPP和非 3GPP的多种无线信号覆盖, 而室外仅有 3GPP网络信号), 则可能使得承载 建立时间较长。 当然, 现有网络也可以将默认承载和专有承载一同建立后, 让用户发起对不希望迁移的业务进行删除, 显然, 该方法不仅会延长流迁移 过程, 增加网络处理负担, 而且可能会向用户计收较多的业务使用费, 从而 降低用户体验。
发明内容
为解决现有的技术问题是, 本发明提供一种流迁移时对网络资源的控制 的方法, 以有效地增强了对网络资源的可控性能。 本发明提供了一种业务流迁移时对网络资源进行控制的方法, 包括: 业 务流迁移过程中, 用户终端 UE将资源控制信息传送给目标网络的网关, 源 网络或目标网络的网关根据所述资源控制信息或与所述资源控制信息相对应 的服务质量 QoS策略对所在网络的网络资源进行控制操作。
进一步地, 所述目标网络的网关是源网络和目标网络共用的分组数据网 络网关 P-GW; 所述资源控制信息是资源释放指示;
源网络或目标网络的网关才艮据所述资源控制信息或与所述资源控制信息 相对应的 QoS策略对所在网络的网络资源进行控制操作的所述步骤包括: 所 述 P-GW根据所述资源释放指示对源网络的网络资源进行是否删除源网络资 源的判断, 若是, 则执行释放操作。
进一步地, 所述资源控制信息是在 3GPP建立默认承载、 3GPP修改承载 资源、 可信任非 3GPP建立连接、 不可信任非 3GPP建立连接或 3GPP建立 PDN连接的过程中, 由 UE经过网络网元传送给所述 P-GW的。
进一步地, 所述 3GPP修改承载资源的过程是建立专有承载的过程, 所
UE向移动管理单元 MME发送的承载资源修改请求中携带所述资源释放 指示, 所述资源释放指示依次通过所述 MME向 S-GW发送的承载资源修改 请求、 所述 S-GW向所述 P-GW发送的承载资源修改请求或代理绑定更新消 息上传至所述 P-GW。
进一步地, 在流迁移时需建立多个专有承载的情况下, 所述 P-GW在最 后一个专有承载建立的过程中获取所述资源释放指示的。
进一步地, 所述资源释放指示是利用协议配置选项 PCO携带的, 包括网 络覆盖标识、 切换场景标识、 删除操作标识或需释放资源的网络标识。
进一步地, 所述资源控制信息是所述 UE在默认承载建立、 PDN连接建 立或专有承载建立的过程中传送给目标网络的网关的, 所述资源控制信息包 括需建立和 /或需删除的流信息;
源网络或目标网络的网关才艮据所述资源控制信息或与所述资源控制信息 相对应的 QoS策略对所在网络的网络资源进行控制操作的所述步骤包括: 所 述目标网络网关根据所述资源控制信息相应的 QoS策略发起相应承载的建立 操作; 所述源网络网关释放所述流信息对应的源网络资源。
进一步地, 所述资源控制信息是所述 UE在默认承载建立、 PDN连接建 立或专有承载建立的过程中传送给目标网络网关和公共网关的, 所述公共网 关指分组数据网络网关 P-GW, 所述资源控制信息包括需建立和 /或需删除的 流信息;
源网络或目标网络的网关才艮据所述资源控制信息或与所述资源控制信息 相对应的 QoS策略对所在网络的网络资源进行控制操作的所述步骤包括: 所 述目标网络网关根据 QoS策略发起相应承载的建立操作; 所述 P-GW释放该 流信息对应的源网络资源。
进一步地, 所述服务质量 QoS策略是通过策略和计费规则功能 PCRF获 取的或静态配置的。
进一步地, 所述源网络或目标网络网关指承载绑定和事件报告功能 BBERF或策略和计费执行功能 PCEF所在的网关。
进一步地, 所述业务流信息是利用协议配置选项 PC0携带的, 包括业务 模板流 TFT信息、 报文过滤器标识或 QoS参数。 本发明还提供一种业务流迁移时对网络资源进行控制的系统, 所述系统 包括源网络的网关及目标网络的网关, 其中,
所述源网络的网关设置成根据资源控制信息或与所述资源控制信息相对 应的服务质量 QoS策略对源网络的网络资源进行控制操作;
所述目标网络的网关设置成接收用户终端传送的资源控制信息, 并根据 所接收到的资源控制信息或与所述资源控制信息相对应的 QoS策略对目标网 络的网络资源进行控制操作。
进一步地, 所述的系统中, 所述资源控制信息为资源释放指示;
所述系统还包括: 移动管理单元 MME及服务网关 S-GW; 其中, 所述 MME设置成接收用户终端发送的携带资源释放指示的承载资源修 改请求, 并发送给所述 S-GW; 所述 S-GW设置成接收所述 MME发送的携带资源释放指示的承载资源 修改请求, 并将携带资源释放指示的承载资源修改请求或代理绑定更新消息 发送给所述 P-GW;
所述 P-GW设置成根据所述资源释放指示对源网络的网络资源进行是否 删除源网络资源的判断, 若是, 则执行释放操作。
进一步地, 所述的系统中, 所述资源控制信息为业务流信息时; 所述目标网络的网关设置成接收资源控制信息, 并根据所接收到的资源 控制信息相对应的 QoS策略发起相应承载的建立操作;
所述源网络的网关设置成释放所述业务流信息对应的源网络资源。
进一步地, 所述的系统中, 所述资源控制信息为业务流信息时; 所述目标网络的网关设置成接收资源控制信息, 并根据所接收到的资源 控制信息相对应的 QoS策略发起相应承载的建立操作; 置成释放所述业务流信息对应的源网络资源。
本发明业务流迁移时对网络资源进行控制的方法, 在业务流迁移时, 对 源网络和目标网络的网络资源具有可知性的网络网关获取资源控制信息, 并 根据该资源控制信息对网络资源进行控制操作, 从而有效地节省了业务流迁 移过程, 提高网络操作效率, 有效地增强了对网络资源的可控性能。
附图概述
图 1是 EPS系统架构的示意图。
图 2是多接入的场景示意图。
图 3是本发明实施例一的流程图。
图 4是本发明实施例二的流程图。
图 5是本发明实施例三的流程图。
图 6是本发明实施例四的流程图。
图 7是本发明实施例五的流程图。 图 8是本发明实施例六的流程图。
图 9是本发明实施例七的流程图。
图 10是本发明实施例八的流程图。
图 11是本发明实施例九的流程图。
本发明的较佳实施方式
本发明业务流迁移时对网络资源进行控制的方法, 业务流迁移过程中, 用户终端 UE将资源控制信息传送给目标网络的网关, 源网络或目标网络的 网关根据所述资源控制信息或相应的服务质量 QoS策略对所在网络的网络资 源进行控制操作。
本发明方法可以对源网络和目标网络的资源进行控制, 本发明中所说的 源网络指业务流迁移之前所处的网络系统; 目标网络指业务流迁移之后所处 的网络系统。
本发明所说的资源控制信息 , 可以是资源释放指示或业务流信息。
下面结合附图和具体实施例对本发明所述技术方案作进一步的详细描 述, 以使本领域的技术人员可以更好的理解本发明并能予以实施, 但所举实 施例不作为对本发明的限定。
本发明所说的资源释放指示表示 UE告知网络侧是否需要释放源网络该 UE相关资源, 而不对目标网络资源的控制(如, 建立或删除)进行判断, 并 且在目标网络中只有公共网关 P-GW对于 UE的源网络资源具有可知性(如, P-GW保存了 UE在源网络中的承载信息), 因此资源释放指示需要在流迁移 时目标网络承载建立过程中告知 P-GW, 由 P-GW对是否进行源网络资源删 除进行判断并进行相应处理操作。
所述资源控制信息是在 3GPP建立默认承载、 3GPP修改承载资源、 可信 任非 3GPP建立连接、 不可信任非 3GPP建立连接或 3GPP建立 PDN连接的 过程中, 由用户终端 UE经过网络网元传送所述 P-GW的。 以下通过实施例 一至实施例六进行详细描述。
实施例一 图 3是本发明实施例一的流程。 UE首先通过可信任非 3GPP接入网接入 到 P-GW, 当 UE决定将某些业务流从非 3GPP接入网迁移到 3GPP接入网之 后, 在 3GPP接入网中进行默认承载建立的流程。 其中通过 3GPP接入时, 核 心网可釆用 PMIPv6协议、 GTP ( General Tunneling Protocol, 通用隧道协议) 或 DSMIP协议。 为了简化描述, 本实施例仅以 3GPP核心网釆用 PMIP协议 的场景为例, 其他实现场景, 如釆用 GTP, DSMIP协议的情况, 与本实施例 极为相似, 不会对阐述本发明造成影响, 故在此不再累述。
在实施例中, P-GW是这样获取所述资源释放指示的: 在 3GPP默认承载 建立时,用户终端 UE向节点 eNB发送的附着请求中携带所述资源释放指示; 所述资源释放指示依次通过所述 eNB 向移动管理单元 MME发送的附着请 求、 所述 MME向服务网关 S-GW发送的建立默认承载请求及所述 S-GW向 所述 P-GW发送的建立默认承载请求或代理绑定更新消息上传至所述 P-GW。 本实施例具体步骤描述如下:
步骤 301 , UE通过可信任非 3GPP系统接入, 且有相关的业务在该连接 上传输;
步骤 302, UE根据本地策略决定将某些业务流从非 3GPP 系统迁移至 3GPP接入系统;
步骤 303 , UE发送附着请求消息给 MME, 携带资源释放指示; 步骤 304 , 通过 HSS进行 UE接入认证和位置更新;
步骤 305, MME向 S-GW发送默认承载建立请求消息, 携带资源释放指 示;
步骤 306, S-GW向 PCRF发起网关控制会话建立, 获取承载绑定所需规 则信息;
步骤 307, S-GW向 P-GW发送 "代理绑定更新"请求消息,其中,该 "代 理绑定更新" 请求消息中携带 NAI、 APN以及资源释放指示;
步骤 308, 驻留有 PCEF的 P-GW和 PCRF之间建立的 Diameter会话, 向 PCRF发送 "IP-CAN会话修改" 消息, PCRF向 P-GW返回 "IP-CAN会 话爹改确认" 消息。 步骤 309, P-GW处理绑定更新,并向 S-GW返回 "代理绑定确认"消息, 携带 P-GW为 UE分配的 IP地址;
步骤 310, S-GW向 MME返回默认承载建立确认消息, 其中, 该默认承 载建立确认消息携带有 UE的 IP地址;
步骤 311 , MME、 eNodeB、 UE之间交互, 建立无线承载;
步骤 312, 在无线承载建立之后, MME向 S-GW发送更新承载请求, 通 知 eNodeB的地址信息等, S-GW返回应答消息;
步骤 313 , 根据 "代理绑定更新"请求消息(见步骤 307 ) 中携带的资源 释放指示, P-GW发起非 3GPP接入系统资源释放过程。该释放流程可以发生 在步骤 308之后。
实施例二
图 4是本发明实施例二的流程。首先 UE已通过可信任非 3GPP以及 3GPP 接入网接入到同一 P-GW, 当 UE决定将某些业务流从非 3GPP接入网迁移到 3GPP接入网之后, 在 3GPP接入网中发起专有承载建立的流程。 其中通过 3GPP接入时 S-GW和 P-GW之间釆用 GTP协议。
在实施例二和实施例三中所述 P-GW是这样获取所述资源释放指示的: 在 3GPP承载资源修改时,用户终端 UE向移动管理单元 MME发送的承载资 源修改请求中携带所述资源释放指示,所述资源释放指示依次通过所述 MME 向 S-GW发送的承载资源修改请求、 所述 S-GW向所述 P-GW的承载资源修 改请求或代理绑带更新消息上传至所述 P-GW。 S-GW在收到 MME发送的专 有承载建立请求后, 向 P-GW发送代理绑定更新消息, P-GW向 S-GW响应 绑定确认消息。 实施例二的具体步骤描述如下:
步骤 401 , UE通过 3GPP和非 3GPP接入网接入同一 P-GW, 且有相关 的业务通过非 3GPP系统传输;
步骤 402, UE根据本地策略决定将某些业务流从非 3GPP 系统迁移至
3GPP接入系统;
步骤 403 , UE向 MME发送承载资源修改请求, 以建立专有承载, 其中 携带资源释放指示; 步骤 404, MME发送承载资源修改请求给 S-GW, 以建立专有承载, 同 样携带资源释放指示;
步骤 405, S-GW向 P-GW发送承载资源修改请求, 以建立专有承载, 携 带资源释放指示;
步骤 406, P-GW与 PCRF交互, 开始执行 IP-CAN会话更新;
步骤 407, P-GW发起专有承载的建立流程;
步骤 408, 在专有承载建立完成后, P-GW告知 PCRF策略执行结果, IP-CAN会话更新结束;
步骤 409,根据专有承载建立请求 (见步骤 405 )中携带的资源释放指示, P-GW发起非 3GPP系统资源释放过程。该释放流程可以发生在步骤 406之后。
实施例三
图 5是本发明实施例三的流程。首先 UE已通过可信任非 3GPP以及 3GPP 接入网接入到同一 P-GW, 当 UE决定将某些业务流从非 3GPP接入网迁移到 3GPP接入网之后, 在 3GPP接入网中发起专有承载建立的流程。 其中通过 3GPP接入时 S-GW和 P-GW之间釆用 PMIP协议。 具体步骤描述如下:
步骤 501 , UE通过 3GPP和非 3GPP接入网接入同一 P-GW, 且有相关 的业务通过非 3GPP系统传输;
步骤 502, UE根据本地策略决定将某些业务流从非 3GPP 系统迁移至 3GPP接入系统;
步骤 503 , UE向 MME发送承载资源修改请求, 以建立专有承载, 其中 携带资源释放指示;
步骤 504, MME发送承载资源修改请求给 S-GW, 以建立专有承载, 同 样携带资源释放指示;
步骤 505, S-GW向 PCRF发起门控和 QoS策略的请求;
步骤 506, S-GW向 P-GW发送代理绑定更新消息, 携带资源释放指示; 步骤 507, P-GW回复代理绑定更新应答;
步骤 508, S-GW发起 3GPP专有承载的建立流程; 步骤 509, 在专有承载建立完成后, S-GW告知 PCRF策略执行结果, 门 控和 QoS策略执行过程结束;
步骤 510, PCRF向 P-GW更新 QoS策略;
步骤 511 ,才艮据代理绑定更新消息 (见步骤 506 )中携带的资源释放指示, P-GW发起非 3GPP系统资源释放过程。
实施例四
图 6是本发明实施例四的流程。 UE首先通过 3GPP接入网接入到 EPS系 统, 当 UE决定将某些业务流从 3GPP接入网迁移到可信任非 3GPP接入网之 后,在可信任非 3GPP接入网中进行连接建立的流程。其中通过可信任非 3GPP 接入时, 可信任非 3GPP接入网与 P-GW之间釆用 PMIPv6协议。
在本实施例中所述 P-GW是这样获取所述资源释放指示的: 可信任非 3GPP连接建立时, 用户终端 UE向可信任非 3GPP接入网关发送的附着请求 中携带所述资源释放指示, 所述资源释放指示通过所述可信任非 3GPP接入 网关向 P-GW发送的代理绑带更新消息上传至所述 P-GW。
本实施例具体步骤描述如下:
步骤 601 , UE通过 3GPP接入网接入到 EPS系统, 且有相关的业务在该 连接上传输, 其中 S-GW和 P-GW之间通过 GTP或者 PMIPv6协议建立数据 通道;
步骤 602, UE根据本地策略决定将某些业务流从 3GPP 系统迁移至非 3GPP接入系统;
步骤 603 , UE执行特定的非 3GPP接入过程, 接入可信任非 3GPP接入 网;
步骤 604 , 在 UE接入到可信任非 3GPP接入网之后, 向 HSS/AAA请求 进行 EPS接入认证; 在 HSS/AAA接收到 EPS接入认证请求之后, 对发出请 求的 UE进行认证; 在 HSS/AAA完成对 UE的认证之后, 向可信任非 3GPP 接入网关发送返回在 3GPP接入中选择的 P-GW和 UE签约的 APN, 包括默 认 APN;
步骤 605, 在认证成功之后, 层 3的附着流程被触发, UE向可信任接入 网关发送的消息携带资源释放指示;
步骤 606,可信任非 3GPP接入网关与 PCRF之间执行网关控制会话建立 过程;
步骤 607, 可信任非 3GPP接入网关向 P-GW发送 "代理绑定更新"请求 消息, 其中, 该 "代理绑定更新" 请求消息中携带有 NAI、 APN和资源释放 指示;
步骤 608 , P-GW与 PCRF之间进行 IP-CAN会话修改过程;
步骤 609, P-GW向可信任非 3GPP接入网关返回 "代理绑定确认"消息, 其中, 该 "代理绑定确认" 消息中携带有 P-GW为 UE分配的 IP地址;
步骤 610, 可信任非 3GPP接入网关向 UE返回应答消息, 其中, 该应答 消息携带有 UE的 IP地址。
步骤 611 , 根据 "代理绑定更新"请求消息(见步骤 607 ) 中携带的资源 释放指示, p_GW发起 3GPP接入系统资源释放过程。
实施例五
图 7是本发明实施例五的流程。 UE首先通过 3GPP接入网接入到 EPS系 统, 当 UE决定将某些业务流从 3GPP接入网迁移到可信任非 3GPP接入网之 后,在可信任非 3GPP接入网中进行连接建立的流程。其中通过可信任非 3GPP 接入时, UE釆用 DSMIPv6接入。
在本实施例中所述 P-GW是这样获取资源释放指示的: 可信任非 3GPP 连接建立时, 用户终端 UE向 P-GW发送绑带更新消息, 其中携带所述资源 释放指示。 本实施例具体步骤描述如下: 步骤 701, UE通过 3GPP接入网接入到 EPS系统, 且有相关的业务在该 连接上传输, 其中 S-GW和 P-GW之间通过 GTP或者 PMIPv6协议建立数据 通道;
步骤 702, UE根据本地策略决定将某些业务流从 3GPP 系统迁移至非
3GPP接入系统;
步骤 703 , 层 2接入。 UE通过可信任非 3GPP接入网接入, HSS/AAA对 UE进行接入认证授权; 步骤 704,认证成功后,建立 UE和可信任非 3GPP接入系统的层 3连接。 接入系统为 UE分配一个 IP地址作为 UE的转交地址 CoA;
步骤 705 , UE根据 APN进行 DNS查询 ,获取提供接入业务网络的 P-GW 的 IP地址。 UE与 P-GW之间建立安全联盟, 并为 UE分配家乡地址 HoA。 P-GW与 HSS交互进行认证授权流程;
步骤 706, UE向 P-GW发送 "绑定更新"请求消息, 携带资源释放指示; 步骤 707 , P-GW向可信任非 3GPP接入网关返回 "绑定确认" 消息; 步骤 708, 根据 "绑定更新"请求消息(见步骤 706 ) 中携带的资源释放 指示, P-GW发起 3GPP接入系统资源释放过程。
实施例六
图 8是本发明实施例六的流程。 UE首先通过 3GPP接入网接入到 EPS系 统, 当 UE决定将某些业务流从 3GPP接入网迁移到不可信任非 3GPP接入网 之后, 通过 ePDG在不可信任非 3GPP接入网中进行连接建立的流程。 其中 通过不可信任非 3GPP接入时, UE与 ePDG之间建立 IPSec隧道, ePDG与 P-GW之间釆用 PMIPv6接入。
在本实施例中所述 P-GW是这样获取资源释放指示的:不可信任非 3GPP 连接建立时, 用户终端 UE向 ePDG发送的隧道建立请求中携带所述资源释 新消息上传至所述 P-GW。 本实施例具体步骤描述如下:
步骤 801, UE通过 3GPP接入网接入到 EPS系统, 且有相关的业务在该 连接上传输, 其中 S-GW和 P-GW之间通过 GTP或者 PMIPv6协议建立数据 通道;
步骤 802 , UE根据本地策略决定将某些业务流从 3GPP 系统迁移至非 3GPP接入系统;
步骤 803 , UE通过 DNS查询获得 ePDG的地址,并向该 ePDG发起 IKEv2
(因特网密钥交换协议版本 2 , Internet Key Exchange Protocol Version 2 )鉴权 和 IPsec隧道的建立, 在此步骤中 UE将资源释放指示携带给 ePDG; ePDG 与 HSS/AAA交互对 UE进行接入鉴权和授权。 步骤 804, 认证成功之后, 层 3的附着流程被触发, ePDG向 P-GW发送 "绑定更新" 请求消息, 携带资源释放指示;
步骤 805, P-GW处理绑定更新, 向 ePDG返回 "绑定确认" 消息, 在消 息中将分配给 UE的 IP地址带给 ePDG;
步骤 806, 绑定更新成功完成后, ePDG被 UE成功鉴权, IPsec隧道建立 完成。
步骤 807, ePDG发送 IKEv2信令, 将分配给 UE的 IP地址带给 UE。 从 UE到 P-GW的 IP连接建立完成。
步骤 808, 根据 "绑定更新"请求消息(见步骤 804 ) 中携带的资源释放 指示, P-GW发起 3GPP接入系统资源释放过程。
对于 3GPP和可信任非 3GPP进行 PDN连接建立的情况, 流程只需将图 3和图 6的附着请求更换成 PDN连接建立请求,资源释放指示在 PDN连接建 立请求中进行携带, 与上述默认承载建立的实施例极为相似, 具体地, 所述 P-GW是这样获取资源释放指示的: 在 3GPP建立 PDN连接时, 用户终端 UE向 eNB发送的 PDN连接请求中携带所述资源释放指示, 所述资源释放指 示依次通过所述 eNB向 MME的 PDN连接请求、所述 MME向 S-GW发送的 建立默认承载请求以及所述 S-GW向 P-GW发送的默认承载建立请求或代理 绑带更新消息上传至所述 P-GW。
对于上述实施例, 源网络表示业务流迁移之前所处的网络系统。 在流迁 移之前终端接入多个系统的情况下, 如果资源释放指示指出需要删除源网络 资源, 则该指示可以包含一个或多个应释放资源的网络标识。
在流迁移时需建立多个专有承载的情况下, 则需要在最后一个专有承载 建立时携带资源释放指示。
另外, UE告知 P-GW删除源网络资源的指示可以在消息中通过协议配置 选项 PCO进行携带,该资源释放指示可以是: 网络覆盖标识、切换场景标识、 删除操作标识、 需迁移或 /和需删除的流信息。
所述资源释放指示是利用协议配置选项 PCO携带的, 包括网络覆盖标 识、 切换场景标识、 删除操作标识或需释放的网络标识。 P-GW会删除需迁移或 /和需删除的流信息相关的网络资源。
如果 P-GW未获取到资源释放指示, 或者根据指示认为不需要删除源网 络资源, 则 P-GW不会发起源网络资源的释放, 或者仅仅释放源网络中无任 何业务流传输的网络承载。
以下实施例七至实施例九显示所述资源控制信息为业务流信息的场景: 实施例七
图 9是本发明实施例七的流程。 UE首先通过可信任非 3GPP接入网接入 到 P-GW (核心网釆用 PMIP协议) , 当 UE决定将某些业务流从非 3GPP接 入网迁移到 3GPP接入网之后,在 3GPP接入网中进行默认承载和专有承载建 立的流程。 其中通过 3GPP接入时, 核心网釆用 GTP ( General Tunneling Protocol, 通用隧道协议 )协议。
在本实施例中所述 P-GW是这样获取所述业务流信息的: 在 3GPP默认 承载建立或 PDN连接建立时, 用户终端 UE向节点 eNB发送的附着请求或 PDN连接建立请求中携带所述业务流信息,所述业务流信息依次通过 eNB向 MME发送的附着请求或 PDN连接建立请求、 MME向 S-GW发送的建立默 认承载请求, 以及 S-GW向 P-GW的默认承载建立请求或代理绑定更新消息 上传至所述 P-GW。 本实施例具体步骤描述如下:
步骤 901 , UE通过可信任非 3GPP系统接入, 且有相关的业务在该连接 上传输;
步骤 902, UE根据本地策略决定将某些业务流从非 3GPP 系统迁移至
3GPP接入系统;
步骤 903 , UE发送附着请求消息给 MME, 携带需迁移或 /和需删除的业 务流信息;
步骤 904 , 通过 HSS进行 UE接入认证和位置更新;
步骤 905, MME向 S-GW发送默认承载建立请求消息, 携带需迁移或 / 和需删除的业务流信息;
步骤 906, S-GW向 P-GW发送默认承载建立请求消息, 消息中携带需迁 移或 /和需删除的业务流信息; 步骤 907, P-GW可以与 PCRF交互, 执行 IP-CAN会话更新, 以触发与 步骤 906携带流信息对应的 PCC决策, 即 QoS策略;
步骤 908, P-GW发起默认承载建立应答; 同时, P-GW根据 PCRF返回 的 QoS策略或者使用本地配置的 QoS策略分配承载层 QoS,并发起需迁移流 信息对应的专有承载建立流程;
步骤 909, S-GW向 MME发送默认承载建立应答, 以及专有承载的建立 请求;
步骤 910, MME、 eNodeB、 UE之间交互, 建立无线承载, 包括默认承 载和专有承载;
步骤 911 , 在无线承载建立之后, MME向 S-GW发送更新承载请求, 通 知 eNodeB的地址信息等, S-GW返回应答消息; 同时 S-GW向 P-GW响应专 有承载建立应答;
步骤 912, 非 3GPP接入网关根据 PCRF返回的 QoS策略向现有承载删 除业务流, 并释放非 3GPP接入系统中无任何业务流传输的网络承载, 以便 对可信任非 3GPP连接进行控制处理。或者, P-GW根据步骤 906携带的需迁 移或 /和需删除的流信息释放非 3GPP接入系统相应的资源。
实施例八
图 10是本发明实施例八的流程。 UE首先通过可信任非 3GPP接入网接 入到 P-GW (核心网釆用 PMIPv6协议), 当 UE决定将某些业务流从非 3GPP 接入网迁移到 3GPP接入网之后,在 3GPP接入网中进行默认承载和专有承载 建立的流程。 其中通过 3GPP接入时, 核心网釆用 PMIP协议。
本实施例中, 所述 S-GW是这样获取所述业务流信息的: 在 3GPP默认 承载建立或 PDN连接建立时, 用户终端 UE向节点 eNB发送的附着请求或 PDN连接建立请求中携带所述业务流信息,所述业务流信息依次通过 eNB向 MME发送的附着请求或 PDN连接建立请求、 MME向 S-GW发送的建立默 认承载请求。 本实施例具体步骤描述如下:
步骤 1001 , UE通过可信任非 3GPP系统接入,且有相关的业务在该连接 上传输; 步骤 1002, UE根据本地策略决定将某些业务流从非 3GPP系统迁移至 3GPP接入系统;
步骤 1003 , UE发送附着请求消息给 MME, 携带需迁移或 /和需删除的 流信息;
步骤 1004, 通过 HSS进行 UE接入认证和位置更新;
步骤 1005, MME向 S-GW发送默认承载建立请求消息, 携带需迁移或 / 和需删除的流信息;
步骤 1006, S-GW向 PCRF发起网关控制会话建立;
步骤 1007, S-GW向 P-GW发送 "代理绑定更新" 请求消息, 其中, 该 "代理绑定更新" 请求消息中携带 NAI、 APN;
步骤 1008, 驻留有 PCEF的 P-GW和 PCRF之间建立的 Diameter会话 , 向 PCRF发送 "IP-CAN会话修改" 消息, PCRF向 P-GW返回 "IP-CAN会 话修改确认" 消息, 携带 QoS规则。
步骤 1009, P-GW处理绑定更新, 并向 S-GW返回 "代理绑定确认" 消 息, 携带 P-GW为 UE分配的 IP地址;
步骤 1010, PCRF与 S-GW交互, 进行网关控制会话修改过程, S-GW将 步骤 1005携带流信息发送至 PCRF, 并获得需迁移流信息对应的 QoS规则; 步骤 1011 , S-GW向 MME发送默认承载建立应答, 并且根据 PCRF返 回的 QoS规则或本地策略, 进行需迁移流信息相应的专有承载建立流程; MME、 eNodeB、 UE之间进行交互, 建立无线承载, 包括默认承载和专有承 载;
步骤 1012, 在专有承载建立完成后, P-GW告知 PCRF策略执行结果, 网关控制和 QoS规则执行过程结束;
步骤 1013 , 可信任非 3GPP接入网关根据 PCRF提供的 QoS策略向现有 承载删除业务流, 并释放非 3GPP接入系统中无任何业务流传输的网络承载, 以便对可信任非 3GPP连接进行控制处理。
实施例九 图 11是本发明实施例九的流程。 UE首先通过 3GPP接入网接入到 EPS 系统(核心网釆用 GTP协议) , 当 UE决定将某些业务流从 3GPP接入网迁 移到可信任非 3GPP接入网之后,在可信任非 3GPP接入网中进行连接建立的 流程。其中通过可信任非 3GPP接入时,可信任非 3GPP接入网与 P-GW之间 釆用 PMIPv6协议。 本实施例具体步骤描述如下:
步骤 1101 , UE通过 3GPP接入网接入到 EPS系统, 且有相关的业务在 该连接上传输, 其中 S-GW和 P-GW之间通过 GTP协议建立数据通道;
步骤 1102, UE根据本地策略决定将某些业务流从 3GPP系统迁移至非 3GPP接入系统;
步骤 1103 , UE执行特定的非 3GPP接入过程, 接入可信任非 3GPP接入 网;
步骤 1104 ,在 UE接入到可信任非 3GPP接入网之后, 向 HSS/AAA请求 进行 EPS接入认证; 在 HSS/AAA接收到 EPS接入认证请求之后, 对发出请 求的 UE进行认证; 在 HSS/AAA完成对 UE的认证之后, 向可信任非 3GPP 接入网关发送返回在 3GPP接入中选择的 P-GW和 UE签约的 APN, 包括默 认 APN;
步骤 1105, 在认证成功之后, 层 3的附着流程被触发, UE向可信任接 入网关发送的消息携带需迁移或 /和需删除的流信息;
步骤 1106, 可信任非 3GPP接入网关与 PCRF之间执行网关控制会话建 立过程;
步骤 1107, 可信任非 3GPP接入网关向 P-GW发送 "代理绑定更新" 请 求消息, 其中, 该 "代理绑定更新" 请求消息中携带有 NAI、 APN;
步骤 1108, P-GW与 PCRF之间进行 IP-CAN会话修改过程;
步骤 1109, P-GW向可信任非 3GPP接入网关返回 "代理绑定确认" 消 息, 其中, 该 "代理绑定确认" 消息中携带有 P-GW为 UE分配的 IP地址; 步骤 1110, PCRF与可信任非 3GPP接入网关交互, 进行网关控制会话 修改过程, 可信任非 3GPP接入网关将步骤 1105携带流信息发送至 PCRF, PCRF 向可信任非 3GPP接入网关提供步骤 1105携带需迁移流信息对应的 QoS规则;
步骤 1111 , 可信任非 3GPP接入网关向 UE返回应答消息, 其中, 该应 答消息携带有 UE的 IP地址。可信任非 3GPP接入网关根据 PCRF返回的 QoS 规则或本地策略, 进行需迁移流信息相应的专有承载建立流程;
步骤 1112, P-GW根据 PCRF返回的 QoS策略向现有承载删除业务流, 则向 S-GW发送更新承载请求, 以便进行 3GPP承载的 QoS更新处理。
如果 UE首先通过 3GPP接入网接入到 EPS系统(核心网釆用 PMIPv6 协议 ) , 当其决定将某些业务流从 3GPP接入网迁移到可信任非 3GPP接入网 (核心网釆用 PMIPv6协议或 DSMIPv6 )之后, 在可信任非 3GPP接入网中 进行连接建立的流程与图 10流程类似, 在此不再重复描述。
对于 3GPP和可信任非 3GPP进行 PDN连接建立的情况, 流程只需将图 9、 图 10和图 11的附着请求更换成 PDN连接建立请求, 需迁移流或 /和需删 除流信息在 PDN连接建立请求中进行携带,与上述默认承载建立的实施例极 为相似, 不会对阐述本发明造成影响, 因此, 故在此不再重复描述。
对于上述实施例, UE告知 P-GW业务流信息可以在消息中通过 PCO (协 议配置选项, Protocol configuration options )进行携带; UE告知 S-GW或 P-GW 业务流信息可以是业务模板流 TFT信息, 也可以是报文过滤器标识, 也可以 是 QoS参数; 同时, 业务流信息可以包含一种或多种业务的流信息。
在流迁移过程中, 当存在需要删除的业务流时, UE告知网络网关的业务 流信息包括需在目标网络建立的业务流信息 (该业务流从源网络迁移至目标 网络)或需在源网络删除的业务流信息, 目标网络或源网络网关对这些流对 应的源网络资源进行删除操作。 如果需建立的流信息是从源网络迁移到目标 网络, 则源网络对应资源应该进行删除, 因此, 所述需建立的流信息可以不 包含在需删除的流信息内。
另外, UE告知网络网关的业务流信息可以包含流操作信息, 如迁移流、 删除流、 增加流等;
对于以上所述资源控制信息为业务流信息的场景 (即实施例七至实施例 九) , 业务流信息表示 UE告知网络侧需在目标网络建立的资源信息 (如, 业务流)或 /和需删除源网络的资源信息(如, 业务流) , 因此, 有必要让源 网络与目标网络中对这些资源可知的网络网元进行判断和处理, 而这些处理 网元因釆用协议的多样性而有所不同。 本专利描述了两种解决方法:
方法一, 如果釆用不带 BBERF的 PCC架构 (如, S-GW与 P-GW之间 釆用 GTP协议) , 则该处理网元为 PCEF所在的网络实体(即 P-GW ) , 如 果釆用带 BBERF的 PCC架构 (如, S-GW与 P-GW之间釆用 PMIP协议 ) , 则该处理网元为 BBERF所在的网络实体(即 S-GW或非 3GPP接入网关) 。 综合来说, 具有以下特点:
1、 当目标网络釆用不带 BBERF的 PCC架构, 则业务流信息需要带给 P-GW, 通过其与 PCRF的交互, 实现资源的控制;
a )对于资源的建立, PCRF将相应的 QoS策略通知目标网络 P-GW, 由 P-GW判断进行资源的建立;
b)对于资源的删除, 当源网络釆用带 BBERF的 PCC架构时, PCRF会通 知源网络 BBERF所在网元相应的 QoS策略 , 由该网元判断是否删除相应的 资源; 当源网络釆用不带 BBERF的 PCC架构时, PCRF会通知源网络 PCEF 所在网元相应的 QoS策略, 由该网元判断是否删除相应的资源。
2、当目标网络釆用带 BBERF的 PCC架构,则业务流信息需要带给 S-GW 或非 3GPP接入网关, 通过其与 PCRF的交互, 实现资源的控制;
a )对于资源的建立, PCRF将相应的 QoS策略通知目标网络 S-GW或非 3GPP接入网关, 由 S-GW或非 3GPP接入网关判断进行资源的建立;
b)对于资源的删除, 当源网络釆用带 BBERF的 PCC架构时, PCRF会通 知源网络 BBERF所在网元相应的 QoS策略 , 由该网元判断是否删除相应的 资源; 当源网络釆用不带 BBERF的 PCC架构时, PCRF会通知源网络 PCEF 所在网元相应的 QoS策略, 由该网元判断是否删除相应的资源。
方法二, 当目标网络釆用不带 BBERF的 PCC架构, 则业务流信息需要 带给公共网关(如 P-GW )和 PCEF所在的网络实体, 资源建立的处理网元为 PCEF所在的网络实体; 如果釆用带 BBERF的 PCC架构, 则业务流信息需要 带给公共网关(如 P-GW )和 BBERF所在的网络实体, 资源建立的处理网元 为 BBERF所在的网络实体。但是,对于资源的删除,处理网元为公共网关(如 P-GW ) 。
当然, 对于釆用业务流信息来表述资源控制信息的情况, 还可以从以下 角度来概括本发明:
所述资源控制信息是所述 UE在默认承载建立或 PDN连接建立或专有承 载建立时传送给目标网络的网关的, 所述资源控制信息包括需建立和 /或需删 除的流信息; 所述网络资源的控制操作是这样进行的: 所述目标网络网关根 据所述资源控制信息相应的 QoS策略发起相应承载的建立操作; 所述源网络 网关释放所述流信息对应的源网络资源。
所述资源控制信息是所述 UE在默认承载建立、 PDN连接建立或专有承 载建立时传送给目标网络网关和公共网关的, 所述公共网关指分组数据网络 网关 P-GW, 所述资源控制信息包括需建立和 /或需删除的流信息; 所述网络 资源的控制操作是这样进行的: 所述目标网络网关根据 QoS策略发起相应承 载的建立操作; 所述 P-GW释放该流信息对应的源网络资源。
这里所说的源网络或目标网络网关指承载绑定和事件报告功能 BBERF 或策略和计费执行功能 PCEF所在的网关, 即 S-GW或非 3GPP接入网关。
以上所说的服务质量 QoS 策略是通过策略和计费规则功能 PCRF获取 的, 也可以是静态配置的。
本发明还提供一种业务流迁移时对网络资源进行控制的系统, 该系统主 要包括: 源网络的网关及目标网络的网关, 其中,
源网络的网关设置成根据资源控制信息或与所述资源控制信息相对应的 服务质量 QoS策略对源网络的网络资源进行控制操作;
目标网络的网关设置成接收用户终端传送的资源控制信息, 并根据所接 收到的资源控制信息或与所述资源控制信息相对应的服务质量 QoS策略对目 标网络的网络资源进行控制操作。
所述资源控制信息为资源释放指示或业务流信息;
其中, 当所述控制信息为资源释放指示时, 所述系统还包括: 移动管理 单元 MME及服务网关 S-GW。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布 在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程 序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 或 者将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制 作成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬件和软 件结合。
以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。
本发明业务流迁移时对网络资源进行控制的方法, 在业务流迁移时, 对 源网络和目标网络的网络资源具有可知性的网络网关获取的资源控制信息, 并根据该资源控制信息对网络资源进行控制操作, 从而有效地节省了业务流 迁移过程, 提高网络操作效率, 有效地增强了对网络资源的可控性能。
工业实用性 本发明业务流迁移时对网络资源进行控制的方法, 对源网络和目标网络 的网络资源具有可知性的网络网关获取的资源控制信息, 并才艮据该资源控制 信息对网络资源进行控制操作, 从而有效地节省了业务流迁移过程, 提高网 络操作效率, 有效地增强了对网络资源的可控性能。

Claims

权 利 要 求 书
1、 一种业务流迁移时对网络资源进行控制的方法, 包括: 业务流迁移过 程中, 用户终端 UE将资源控制信息传送给目标网络的网关, 源网络或目标 网络的网关根据所述资源控制信息或与所述资源控制信息相对应的服务质量 QoS策略对所在网络的网络资源进行控制操作。
2、 如权利要求 1所述的方法, 其中,
所述目标网络的网关是源网络和目标网络共用的分组数据网络网关 P-GW;
所述资源控制信息是资源释放指示;
源网络或目标网络的网关才艮据所述资源控制信息或与所述资源控制信息 相对应的 QoS策略对所在网络的网络资源进行控制操作的所述步骤包括: 所述 P-GW根据所述资源释放指示对源网络的网络资源进行是否删除源 网络资源的判断, 若是, 则执行释放操作。
3、 如权利要求 2所述的方法, 其中,
所述资源控制信息是在 3GPP建立默认承载、 3GPP修改承载资源、 可信 任非 3GPP建立连接、 不可信任非 3GPP建立连接或 3GPP建立 PDN连接的 过程中, 由 UE经过网络网元传送给所述 P-GW的。
4、 如权利要求 3所述的方法, 其中,
所述 3GPP修改承载资源的过程是建立专有承载的过程;
UE向移动管理单元 MME发送的承载资源修改请求中携带所述资源释放 指示, 所述资源释放指示依次通过所述 MME向服务网关 S-GW发送的承载 资源修改请求、 所述 S-GW向所述 P-GW发送的承载资源修改请求或代理绑 定更新消息上传至所述 P-GW。
5、 如权利要求 4所述的方法, 其中,
在流迁移时需建立多个专有承载的情况下, 所述 P-GW是在最后一个专 有承载建立的过程中获取所述资源释放指示的。
6、 如权利要求 2所述的方法, 其中,
所述资源释放指示是利用协议配置选项 PCO携带的, 包括网络覆盖标 识、 切换场景标识、 删除操作标识或需释放资源的网络标识。
7、 如权利要求 1所述的方法, 其中,
所述资源控制信息是所述 UE在默认承载建立、 PDN连接建立或专有承 载建立的过程中传送给目标网络的网关的, 所述资源控制信息包括需建立和 / 或需删除的流信息;
源网络或目标网络的网关才艮据所述资源控制信息或与所述资源控制信息 相对应的 QoS策略对所在网络的网络资源进行控制操作的所述步骤包括: 所述目标网络网关根据所述资源控制信息相对应的 QoS策略发起相应承 载的建立操作; 以及所述源网络的网关释放所述流信息对应的源网络资源。
8、 如权利要求 1所述的方法, 其中,
所述资源控制信息是所述 UE在默认承载建立、 PDN连接建立或专有承 载建立的过程中传送给目标网络网关和公共网关的, 所述公共网关指分组数 据网络网关 P-GW, 所述资源控制信息包括需建立和 /或需删除的流信息; 源网络或目标网络的网关才艮据所述资源控制信息或与所述资源控制信息 相对应的 QoS策略对所在网络的网络资源进行控制操作的所述步骤包括: 所述目标网络网关根据 QoS 策略发起相应承载的建立操作; 以及所述 P-GW释放所述流信息对应的源网络资源。
9、 如权利要求 7或 8所述的方法, 其中,
所述 QoS策略是通过策略和计费规则功能 PCRF获取的或静态配置的。
10、 如权利要求 7或 8所述的方法, 其中,
所述源网络或目标网络的网关指承载绑定和事件报告功能 BBERF或策 略和计费执行功能 PCEF所在的网关。
11、 如权利要求 7或 8所述的方法, 其中,
所述业务流信息是利用协议配置选项 PCO携带的, 包括业务模板流 TFT 信息、 报文过滤器标识或 QoS参数。
12、 一种业务流迁移时对网络资源进行控制的系统, 所述系统包括源网 络的网关及目标网络的网关, 其中,
所述源网络的网关设置成根据资源控制信息或与所述资源控制信息相对 应的服务质量 QoS策略对源网络的网络资源进行控制操作;
所述目标网络的网关设置成接收用户终端传送的资源控制信息, 并根据 所接收到的资源控制信息或与所述资源控制信息相对应的 QoS策略对目标网 络的网络资源进行控制操作。
13、 如权利要求 12所述的系统, 其中,
所述资源控制信息为资源释放指示;
所述系统还包括: 移动管理单元 MME及服务网关 S-GW; 其中, 所述 MME设置成接收用户终端发送的携带资源释放指示的承载资源修 改请求, 并发送给所述 S-GW;
所述 S-GW设置成接收所述 MME发送的携带资源释放指示的承载资源 修改请求, 并将携带资源释放指示的承载资源修改请求或代理绑定更新消息 发送给所述 P-GW;
所述 P-GW设置成根据所述资源释放指示对源网络的网络资源进行是否 删除源网络资源的判断, 若是, 则执行释放操作。
14、 如权利要求 12所述的系统, 其中,
所述资源控制信息为业务流信息;
所述目标网络的网关设置成接收资源控制信息, 并根据所接收到的资源 控制信息相对应的 QoS策略发起相应承载的建立操作;
所述源网络的网关设置成释放所述业务流信息对应的源网络资源。
15、 如权利要求 12所述的系统, 其中,
所述资源控制信息为业务流信息;
所述目标网络的网关设置成接收资源控制信息, 并根据所接收到的资源 控制信息相对应的 QoS策略发起相应承载的建立操作; 置成释放所述业务流信息对应的源网络资源。
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