WO2016192011A1 - 一种拥塞控制的方法及网元设备 - Google Patents

一种拥塞控制的方法及网元设备 Download PDF

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Publication number
WO2016192011A1
WO2016192011A1 PCT/CN2015/080508 CN2015080508W WO2016192011A1 WO 2016192011 A1 WO2016192011 A1 WO 2016192011A1 CN 2015080508 W CN2015080508 W CN 2015080508W WO 2016192011 A1 WO2016192011 A1 WO 2016192011A1
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Prior art keywords
resource
base station
vim
request message
vnfm
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PCT/CN2015/080508
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English (en)
French (fr)
Inventor
韦安妮
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP15893670.8A priority Critical patent/EP3285431B1/en
Priority to CN201580037341.9A priority patent/CN106471771B/zh
Priority to PCT/CN2015/080508 priority patent/WO2016192011A1/zh
Publication of WO2016192011A1 publication Critical patent/WO2016192011A1/zh
Priority to US15/809,099 priority patent/US20180098327A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
    • G06F9/45533—Hypervisors; Virtual machine monitors
    • G06F9/45558—Hypervisor-specific management and integration aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0893—Assignment of logical groups to network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0894—Policy-based network configuration management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0895—Configuration of virtualised networks or elements, e.g. virtualised network function or OpenFlow elements
    • 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
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • 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
    • H04L67/50—Network services
    • H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0289—Congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/084—Load balancing or load distribution among network function virtualisation [NFV] entities; among edge computing entities, e.g. multi-access edge computing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
    • G06F9/45533—Hypervisors; Virtual machine monitors
    • G06F9/45558—Hypervisor-specific management and integration aspects
    • G06F2009/45595—Network integration; Enabling network access in virtual machine instances

Definitions

  • the present invention relates to the field of communications, and in particular, to a congestion control method and a network element device.
  • NFV Network Function Virtualization
  • the implementation process may be: an eNB (evolved Node B) detects whether the NFV network is congested. When congestion is detected, the eNB sends a PCR to the PCRF (The Policy and Charging Rules Function sends a RAN (Radio Access Network) user plane congestion indication; the PCRF receives the RAN user plane congestion indication, and performs congestion control according to the congestion control policy, for example, blocking new The user accesses the NFV network or reduces the code rate of some services in the NFV network to achieve the purpose of reducing the load.
  • a eNB evolved Node B
  • PCRF Radio Access Network
  • the adopted policies are to prevent new users from accessing or reducing the code rate of the service. Lowering the service code rate will reduce the quality of the service transmission, and preventing new users from accessing the NFV network may result in the user being unable to request the service.
  • the embodiment of the invention provides a method for congestion control and a network element device.
  • the technical solution is as follows:
  • the present invention provides a method of congestion control, the method comprising:
  • the VIM Determining, by the resource parameter and the identifier information of the VIM, the VIM to allocate resources required by the base station, and configuring the allocated resources on the base station to implement congestion control on the base station.
  • the requesting, by the resource parameter and the identifier information of the VIM, the resource required for the VIM to allocate the base station includes:
  • the resource parameter is a resource size of a resource required by the base station or in the base station The amount of traffic for a business that is not assigned to a resource.
  • the method further includes:
  • the method further includes:
  • the NFVO sends an upgrade message to the NFVO, where the upgrade message carries the identifier information of the allocated resource, the identifier information of the base station, and the identifier information of the VIM, where the upgrade message is used to request the
  • the NFVO associates the identification information of the allocated resource, the identification information of the base station, and the identification information of the VIM.
  • the present invention provides a method of congestion control, the method comprising:
  • the VIM allocates resources required by the base station and configures the allocated resources on the base station.
  • the determining, by the resource parameter, the virtualized infrastructure manager VIM that can provide the required resources of the base station includes:
  • a VIM having an amount of idle resources greater than or equal to the size of the resource is determined as a VIM capable of providing resources required by the base station.
  • the method further includes:
  • the content of the expansion failure message is sent to the VNFM, where the capacity expansion failure message is used to request the VNFM to send the information to the base station.
  • the expansion failure message is used to indicate that the base station requests the policy and charging rule function PCRF to perform congestion control.
  • the virtual network function management Before the VNFM sends a resource reservation success message also includes:
  • the upgrade message carries identifier information of the allocated resource, identifier information of the base station, and identifier information of the VIM;
  • the identifier information of the allocated resource the identifier information of the base station, and the identifier information of the VIM.
  • the resource parameter is The resource size of the resources required by the base station or the traffic of the service in the base station that is not allocated resources.
  • the present invention provides a method of congestion control, the method comprising:
  • VNFM virtual network function manager
  • the service is run according to the allocated resource to implement congestion control.
  • the method further includes:
  • the requesting policy and the charging rule function PCRF perform congestion control on the base station according to the indication of the capacity expansion failure message.
  • the method before the sending the contention request message to the virtual network function manager VNFM, the method further includes:
  • the sending the contention request message to the virtual network function manager VNFM includes:
  • the present invention provides a network element device, where the network element device includes: a transceiver and a processor;
  • the transceiver is configured to receive a capacity expansion request message, where the capacity expansion request message carries a resource parameter indicating a required resource size of a base station where congestion occurs; and the content expansion request message is sent to the network function virtualization orchestrator NFVO, The capacity expansion request message is used to request the NFVO to determine a virtualized infrastructure manager VIM capable of providing resources required by the base station; and receive a resource reservation success message sent by the NFVO, where the resource reservation success message carries the VIM Identification information;
  • the processor configured to request, according to the resource parameter and the identifier information of the VIM, the VIM to allocate resources required by the base station, and configure the allocated resource on the base station, to implement the The base station performs congestion control.
  • the processor is configured to determine, according to the resource parameter, a resource size of a resource required by the base station;
  • the transceiver is further configured to send a resource allocation request message to the VIM according to the identifier information of the VIM, where the resource allocation request message carries the resource size, where the resource allocation request message is used to request the VIM according to the The resource size allocates resources; and receives the allocated resources sent by the VIM.
  • the resource parameter is a resource size of a resource required by the base station or in the base station The amount of traffic for a business that is not assigned to a resource.
  • the transceiver is further configured to receive a contention failure message sent by the NFVO, where the capacity expansion failure message carries an insufficient resource indication, and the capacity expansion failure message is that the NFVO determines that the VIM that is not required to provide the resource of the base station is determined. And sending the contention failure message to the base station, where the resource shortage indication is used to instruct the base station to request a policy and a charging rule function PCRF to perform congestion control.
  • the transceiver is further configured to send an upgrade message to the NFVO, where the upgrade message carries the allocation The identifier information of the resource, the identifier information of the base station, and the identifier information of the VIM, where the upgrade message is used to request the NFVO to associate the identifier information of the allocated resource, the identifier information of the base station, and the VIM. Identification information.
  • the present invention provides a network element device, where the network element device includes: a transceiver and a processor;
  • the transceiver is configured to receive a capacity expansion request message, where the capacity expansion request message carries a resource parameter indicating a required resource size of a base station where congestion occurs;
  • the processor configured to determine, according to the resource parameter, a virtualized infrastructure manager VIM capable of providing resources required by the base station;
  • the transceiver is further configured to send a resource reservation success message to the virtual network function manager VNFM, where the resource reservation success message carries the identifier information of the VIM, where the resource reservation success message is used to indicate the VNFM And requesting, by the identifier information of the VIM, the VIM to allocate resources required by the base station, and configuring the allocated resources on the base station.
  • the processor is configured to determine, according to the resource parameter, a resource size of the resource required by the base station, and query, from a correspondence between the VIM and the idle resource quantity, whether the amount of the idle resource is greater than or equal to the VIM of the resource size; There is a VIM that determines that the amount of idle resources is greater than or equal to the size of the resource as a VIM capable of providing resources required by the base station.
  • the method further includes:
  • the transceiver is further configured to send a contention failure message to the VNFM if it is determined that the VIM is not available to provide the resource required by the base station, where the capacity expansion failure message carries an insufficient resource indication, and the capacity expansion failure message is used to request the
  • the VNFM sends the capacity expansion failure message to the base station, where the resource shortage indication is used to instruct the base station to request a policy and a charging rule function PCRF to perform congestion control.
  • the transceiver is further configured to send a resource reservation request message to the VIM, where the resource reservation request message carries a resource size required by the base station, where the resource reservation request message is used to request the VIM according to the Determining, by the resource size, whether resources required by the base station can be provided; receiving the VIM A resource reservation success message sent when a resource required by the base station can be provided.
  • the transceiver is further configured to receive an upgrade message sent by the VNFM, where the upgrade message carries identifier information of the allocated resource, identifier information of the base station, and identifier information of the VIM;
  • the processor is further configured to associate identifier information of the allocated resource, identifier information of the base station, and identifier information of the VIM.
  • the resource parameter is a resource size of a resource required by the base station or a service volume of a service in the base station that is not allocated a resource.
  • the present invention provides a network element device, where the network element device includes: a processor and a transceiver;
  • the transceiver is configured to send, when the processor detects that the base station is congested, a content expansion request message to the virtual network function manager VNFM, where the capacity expansion request message carries resource parameters used to indicate the required resource size of the base station. And the contention request message is used to request the VNFM to allocate resources required by the base station according to the resource parameter;
  • the processor is configured to: if the allocated resource sent by the VNFM when the resource is successfully allocated, run a service according to the allocated resource to implement congestion control.
  • the processor is further configured to perform congestion control on the base station according to the indication request policy and the charging rule function PCRF of the contention failure message if the contention failure message sent by the VNFM when the resource allocation fails is received.
  • the transceiver is configured to send a radio access network RAN user plane congestion indication to the PCRF, receive a resource control indication RCI rule sent by the PCRF according to the RAN user plane congestion indication, and send the expansion to the VNFM according to the RCI rule. Request message.
  • the resources of the base station are first expanded. If the capacity expansion is successful, the traffic of the transmitted service does not need to be restricted or the transmission rate of the service is reduced. There are resources to ensure that users normally request services and improve the quality of service transmission. If the capacity expansion fails, the base station requests congestion control from the PCRF to ensure successful congestion control.
  • FIG. 2 is a flowchart of a method for congestion control according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for congestion control according to another embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for congestion control according to another embodiment of the present invention.
  • FIG. 5 is a flowchart of a method for congestion control according to another embodiment of the present invention.
  • FIG. 6 is a flowchart of a method for congestion control according to another embodiment of the present invention.
  • FIG. 7 is a flowchart of a method for congestion control according to another embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of an apparatus for congestion control according to another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of an apparatus for congestion control according to another embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a network element device according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a network element device according to another embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a network element device according to another embodiment of the present invention.
  • FIG. 1 is a schematic diagram of an NFV network architecture used in an embodiment of the present invention.
  • the network architecture includes a base station, an MME (Mobile Management Entity), a SGW (Serving GateWay), and a PGW (PDN GateWay, PDN).
  • PGW Packet Control Network
  • PDN Packet Control Network
  • PCRF Packet Control Function
  • TDF Traffic Detection Function
  • VNFM VNF Manager, VNF (Virtualised Network Function) Manager
  • NFVO Network Functions Virtualization Orchestrator Network Function Virtualization Orchestrator
  • VIM Virtualization Infrastructure Manager, Virtualization Infrastructure Manager
  • the base station may be an eNB.
  • the PCRF is used to control the base station when the base station is congested.
  • the VNFM is used to manage the hardware resources in the NFV network.
  • the VIM is used to manage the software resources in the NFV network.
  • VM Virtual Machine
  • NFVO is used to manage resources in each VIM and each VIM in the NFV network.
  • the TDF can be built in the PGW or externally placed on the PGW for DPI (Deep Dacket Inspection) monitoring and execution policy control in the network.
  • DPI Deep Dacket Inspection
  • the network architecture may further include an NMS (Network Management System), which is used to help the VNFM manage hardware resources in the NFV network.
  • NMS Network Management System
  • the NMS can be integrated in the VNFM, is a functional module in the VNFM, or can be a device separate from the VNFM.
  • NFVI Network Function Virtulization Infrastructure
  • the uppermost layer of the NFVI is Virtual resources
  • these virtual resources can be VMs
  • the bottom layer is hardware resources (dashed box is a topology composed of hardware devices)
  • the hypervisor (virtual machine monitor) located in the middle layer is a virtual layer for coordinating hardware devices.
  • the VM for example, allocates hardware resources such as memory, CPU (Central Processing Unit), and disk to the VM on the hardware device.
  • an embodiment of the present invention provides a method for congestion control, which is implemented by a VNFM, and includes:
  • Step 201 Receive a capacity expansion request message, where the capacity expansion request message carries resource parameters for indicating a resource size required by the base station where congestion occurs.
  • Step 202 Send the content expansion request message to the NFVO, where the capacity expansion request message is used to request the NFVO to determine a VIM capable of providing resources required by the base station.
  • Step 203 Receive a resource reservation success message sent by the NFVO, where the resource reservation success message carries the identifier information of the VIM.
  • Step 204 Request the VIM to allocate a base station according to the resource parameter and the identifier information of the VIM.
  • the resources are allocated and allocated resources on the base station to implement congestion control on the base station.
  • the NFVO manages the VIMs in the NFV network and the resources in the VIMs.
  • the NFVO may also be configured to send an upgrade message to the NFVO, where the upgrade message carries the resource.
  • the identification information, the identification information of the base station, and the identification information of the VIM to request the NFVO to associate the identification information of the resource, the identification information of the base station, and the identification information of the VIM.
  • the contention request message is received, and the capacity expansion request message carries a resource parameter for indicating the resource size of the base station where the congestion occurs, and the resource is first expanded according to the resource parameter, and if the capacity expansion is successful, the base station is configured.
  • the base station does not need to limit the traffic of the transmitted service or reduce the transmission rate of the service, so that the base station has the resources to ensure that the user normally requests the service and improves the service transmission quality, and improves the QoE (Quality of Experience) of the user. ).
  • an embodiment of the present invention provides a method for congestion control, including:
  • Step 301 When the base station is congested, the base station sends a content expansion request message to the VNFM, where the capacity expansion request message carries resource parameters for indicating the required resource size of the base station.
  • the resource parameter may be a resource size of a resource required by the base station or a traffic volume of a service in the base station that is not allocated to the resource.
  • the base station may not have enough resources allocated to the service, causing congestion of the base station; the base station may calculate the required resource size according to the service volume of the service that is not allocated resources, to the VNFM.
  • the resource requested by the base station may be a VM
  • the English form of the expansion request message is a scaling request
  • Step 302 The VNFM receives the capacity expansion request message, and sends the capacity expansion request message to the NFVO.
  • Step 303 The NFVO receives the contention request message, and determines, according to the resource parameter carried in the capacity expansion request message, whether the VIM can provide the resources required by the base station.
  • the NFV network includes multiple VIMs, each of which has a large number of resources.
  • the VIM can allocate resources for transmitting services for network elements in the NFV network.
  • NFVO is used to manage each VIM in the NFV network.
  • the remaining amount of idle resources of each VIM is stored in the NVFO, that is, the correspondence between the VIM and the amount of idle resources is stored in the NVFO.
  • This step may be: the NFVO receives the contention request message, and is carried according to the contention request message.
  • the resource parameter determines the resource size of the resource required by the base station, and queries whether there is a VIM whose idle resource quantity is greater than or equal to the size of the resource from the correspondence between the VIM and the idle resource quantity. If yes, it is determined that the VIM can provide the resource required by the base station; If not, it is determined that no VIM can provide the resources required by the base station.
  • the NFVO directly uses the resource parameter as the resource size of the resource required by the base station. If the resource parameter is the traffic volume, the NFVO calculates the resource size of the resource required by the base station according to the traffic volume.
  • Step 304 If the NFVO determines that the VIM can provide the resources required by the base station, and determines the VIM that can provide the required resources of the base station, and sends a resource reservation request message to the VIM, where the resource reservation request message carries the resource size required by the base station. .
  • the NFVO may determine, from the correspondence between the amount of idle resources and the VIM, a VIM whose idle resource amount is greater than or equal to the required resource size of the base station as a VIM capable of providing resources required by the base station. Since the amount of idle resources in the VIM stored in the NFVO may be different from the actual amount of idle resources in the VIM, the VNFO may send a resource reservation request message to the determined VIM requesting the VIM to confirm whether the resources required by the base station can be provided.
  • Step 305 The VIM receives the resource reservation request message, and determines whether there are sufficient resources according to the resource size carried in the resource reservation request message, and if yes, sends a resource reservation success message to the NFVO.
  • the VIM can obtain the remaining amount of idle resources. If the amount of the idle resources is greater than or equal to the size of the resources carried in the resource reservation request message, it is determined that there are sufficient resources. Otherwise, it is determined that there are not enough resources.
  • the NFVO may re-determine the VIM capable of providing the resources required by the base station after receiving the resource reservation failure message.
  • Step 306 The NFVO receives the resource reservation success message, and sends the resource reservation success message to the VNFM, where the resource reservation success message carries the identifier information of the VIM.
  • the NFVO may add the VIM identification information to the resource reservation success message, and then send the resource reservation success message of the VIM identification information to the VNFM.
  • the NFVO may directly send a resource reservation success message to the VNFM, where the resource reservation success message carries the identification information of the VIM, in which case the NFVO does not
  • the determined VIM sends a resource reservation request message requesting the determined VIM acknowledgement.
  • Step 307 The VNFM receives the resource reservation success message, and sends a resource allocation request message to the VIM according to the identifier information of the VIM carried in the resource reservation success message, where the resource allocation request message carries the resource size of the resource required by the base station.
  • the VNFM determines the resource size of the resource required by the base station according to the resource parameter before sending the resource allocation request message. Specifically, if the resource parameter is the resource size, the VNFM directly uses the resource parameter as the resource size of the resource required by the base station. If the resource parameter is the traffic volume, the VNFM calculates the resource size of the resource required by the base station according to the traffic volume.
  • Step 308 The VIM receives the resource allocation request message, allocates resources according to the resource size carried in the resource allocation request message, and sends the allocated resources to the VNFM.
  • the resource allocated by the VIM is a VM, which can be transmitted in the NFV network.
  • Step 309 The VNFM receives the resource allocated by the VIM, and configures the resource on the base station to implement congestion control on the base station.
  • the capacity expansion request message sent by the base station carries the identity information of the base station
  • the VNFM can send the resource to the base station according to the identity information of the base station, and the base station receives the resource, and allocates the resource to the service that is not allocated to the resource.
  • the service is run through the resource to implement the resource configuration on the base station.
  • the VNFM allocates the resources allocated by the VIM to the base station, so that the base station has sufficient resources to transmit the traffic, thereby solving the congestion of the base station and implementing congestion control. Since the resources are allocated to the base station, the base station has sufficient resources to transmit the traffic, and the QoE of the user is greatly improved compared with the congestion control means such as limiting the traffic or reducing the transmission rate of the service.
  • Step 310 The VNFM sends an upgrade message to the NFVO, where the upgrade message carries the identifier information of the allocated resource, the identifier information of the base station, and the identifier information of the VIM.
  • the identifier information of the resource is the identifier information of the VM.
  • Step 311 The NFVO receives the upgrade message, associates the identifier information of the resource carried in the upgrade message, the identifier information of the base station, and the identifier information of the VIM, and ends the operation.
  • the NFVO Since the NFVO manages the resources in the VIM and the VIMs in the entire NFV network, the NFVO needs to associate the identification information of the resource carried in the upgrade message, the identity information of the base station, and the identifier information of the VIM.
  • the NFVO may also subtract the amount of idle resources of the VIM from the amount of resources required by the base station from the correspondence between the VIM and the amount of idle resources.
  • Step 312 If the NFVO determines that no VIM can provide the resources required by the base station, NFVO The expansion failure message is sent to the VNFM, and the expansion failure message carries an indication of insufficient resources.
  • Step 313 The VNFM receives the capacity expansion failure message, and sends the capacity expansion failure message to the base station.
  • Step 314 The base station receives the expansion failure message, and sends a RAN user plane congestion indication to the PCRF.
  • the RAN user plane congestion indication may also carry indication information that the capacity expansion fails.
  • the base station sends the RAN user plane congestion indication to the MME
  • the MME receives the RAN user plane congestion indication, and sends the RAN user plane congestion indication to the SGW
  • the SGW receives the RAN user plane congestion indication, and sends the user plane to the MME.
  • the congestion indication response message, and the RAN user plane congestion indication is sent to the PGW;
  • the PGW receives the RAN user plane congestion indication, sends a user plane congestion indication response message to the SGW, and sends the RAN user plane congestion indication to the PCRF.
  • Step 315 The PCRF receives the RAN user plane congestion indication, and performs congestion control on the base station according to the congestion control policy.
  • the PCRF determines that the base station requests the capacity expansion failure according to the indication information of the capacity expansion failure carried by the RAN user plane congestion indication, and then uses the congestion control policy to perform congestion control on the base station.
  • the congestion control policy may be to limit the flow of the base station, that is, to prevent the new user from accessing the base station and request the service from the base station.
  • the congestion control policy may be to reduce the code rate of the transmission service, such as controlling the base station to be transmitting. HD services are reduced to SD services.
  • the base station when the base station is congested, the base station first requests the VNFM to expand its resources. If the capacity expansion is successful, the network does not need to limit the traffic or reduce the transmission rate of the service, so that the base station has resource guarantee. The user normally requests the service and improves the quality of the service transmission, and improves the QoE of the user. If the capacity expansion fails, the base station requests congestion control from the PCRF.
  • an embodiment of the present invention provides a method for congestion control, including:
  • Step 401 When the base station is congested, the base station sends a RAN user plane congestion indication to the PCRF.
  • step 314 in FIG. 3 For a specific process for the base station to send the RAN user plane congestion indication to the PCRF, reference may be made to the related content of step 314 in FIG. 3, which is not described in detail herein.
  • the base station may not have enough resources allocated to the service, causing congestion of the base station. When congestion occurs, the base station starts performing this step.
  • Step 402 The PCRF receives the RAN user plane congestion indication, and sends an RCI (Resource Control indication) rule to the base station, where the RCI rule is used to instruct the base station to request the VNFM expansion resource.
  • RCI Resource Control indication
  • Step 403 The base station receives the RCI rule, and sends the expansion to the VNFM according to the RCI rule.
  • the message is requested, and the capacity expansion request message carries a resource parameter for indicating a resource size required by the base station.
  • the resource parameter may be a resource size of a resource required by the base station or a traffic volume of a service in the base station that is not allocated to the resource.
  • the base station may calculate the required resource size according to the traffic of the service that is not allocated to the resource, and send a capacity expansion request message carrying the resource size to the VNFM to request the VNFM to perform congestion control; or the base station sends the VNFM to carry the unallocated resource.
  • the service volume expansion request message of the service requests the VNFM to perform congestion control.
  • the resource requested by the base station may be a VM
  • the English form of the expansion request message is a scaling request
  • Steps 404 to 415 are the same as steps 302-313 in FIG. 3, respectively, and will not be described in detail herein.
  • Step 416 The base station receives the expansion failure message sent by the VNFM, and sends the expansion failure message to the PCRF.
  • the expansion failure message may also carry the indication that the capacity expansion fails.
  • Step 417 The PCRF receives the expansion failure message, and performs congestion control on the base station according to the congestion control policy.
  • the PCRF determines that the base station requests the capacity expansion failure according to the indication information of the expansion failure message carried in the expansion failure message, and then uses the congestion control policy to perform congestion control on the base station.
  • the base station when the base station is congested, the base station requests the PCRF to perform congestion control.
  • the PCRF determines that the base station has not requested the VNFM expansion resource
  • the PCRF sends an RCI rule to the base station, and the RCI rule first instructs the base station to request the VNFM as the resource of the base station. If the capacity expansion is successful, you do not need to limit the traffic of the transmitted service or reduce the transmission rate of the service. Therefore, the base station has the resources to ensure that the user can request the service normally and improve the quality of the service transmission, and improve the QoE of the user.
  • the PCRF then performs congestion control on the base station.
  • an embodiment of the present invention provides a method for congestion control, including:
  • Step 501 When the base station is congested, the base station sends a RAN user plane congestion indication to the PCRF, where the RAN user plane congestion indicates resource parameters of resources required to carry the base station.
  • step 314 in FIG. 3 For a specific process for the base station to send the RAN user plane congestion indication to the PCRF, reference may be made to the related content of step 314 in FIG. 3, which is not described in detail herein.
  • Step 502 The PCRF receives the RAN user plane congestion indication, and sends a capacity expansion request message to the NMS (Network Management System), where the capacity expansion request message carries the identity information of the base station and the resource parameter used to indicate the required resource size of the base station.
  • NMS Network Management System
  • the resource requested by the base station may be a VM
  • the English version of the expansion request message is a scaling request
  • Step 503 The NMS receives the contention request message, and sends the capacity expansion request message to the VNFM, where the capacity expansion request message carries the identity information of the base station and the resource size required by the base station.
  • the NMS After receiving the contention request message, the NMS determines the resource size required by the base station according to the resource parameter carried in the capacity expansion request message, and then replaces the resource parameter carried in the capacity expansion request message with the resource size.
  • the process of determining, by the NMS, the resource size required by the base station according to the resource parameter may be: if the resource parameter is a resource size, the resource parameter is directly used as a resource size required by the base station; if the resource parameter is a traffic quantity, according to the resource parameter The traffic calculates the amount of resources required by the base station.
  • Steps 504 to 514 are the same as steps 302 to 312 in FIG. 3, respectively, and will not be described in detail herein.
  • Step 515 The VNFM receives the expansion failure message sent by the NFVO, and sends the expansion failure message to the PCRF.
  • the VNFM can also send the expansion failure message to the NMS.
  • the capacity expansion failure message may also carry an indication of insufficient resources.
  • Step 516 The PCRF receives the capacity expansion failure message, and performs congestion control on the base station according to the congestion control policy.
  • the PCRF determines that the base station requests the capacity expansion failure according to the insufficient resource indication carried in the expansion failure message, and then uses the congestion control policy to perform congestion control on the base station.
  • the base station when the base station is congested, the base station requests the PCRF to perform congestion control, and the PCRF determines that the base station has not requested the VNFM to expand the resource, and first requests the VNFM to expand the resources of the base station. If the capacity expansion is successful, the base station does not need to transmit.
  • the service performs traffic limiting or reduces the transmission rate of the service, so that the base station has resources to ensure that the user normally requests the service and improves the quality of the service transmission, and improves the QoE of the user; if the capacity expansion fails, the PCRF performs congestion control on the base station.
  • an embodiment of the present invention provides a method for congestion control, which is implemented by NFVO, and includes:
  • Step 601 Receive a capacity expansion request message, where the capacity expansion request message carries resource parameters for indicating a resource size required by the base station where congestion occurs.
  • Step 602 Determine, according to the resource parameter, a VIM capable of providing resources required by the base station.
  • Step 603 Send a resource reservation success message to the VNFM, where the resource reservation success message carries the VIM identification information, where the resource reservation success message is used to instruct the VNFM to request the VIM to allocate resources required by the base station according to the VIM identification information and allocate the resource.
  • the resources are configured on the base station.
  • the resource reservation request message may be sent to the VIM, where the resource reservation request message carries the resource size of the resource required by the base station, where the resource reservation request message is used to request the VIM.
  • the resource reservation success message sent when the VIM confirms that the required resources of the base station can be provided is received according to the resource size, and then the resource reservation success message is sent to the VNFM.
  • the upgrade message sent by the VNFM is further received, where the upgrade message carries the identifier information of the resource allocated by the VIM, the identifier information of the base station, and the identifier information of the VIM, and is associated with the resource allocated by the VIM carried in the upgrade message.
  • Identification information, identification information of the base station, and identification information of the VIM Since the VNFM needs to manage the resources in the VIMs and the VIMs in the NFV network, the identification information of the resources allocated by the VIM, the identification information of the base station, and the identification information of the VIM can facilitate the VNFM management.
  • the base station when the base station is congested, receiving a capacity expansion request message, where the capacity expansion request message carries a resource parameter indicating a required resource size of the base station, and determining, according to the resource parameter, a VIM capable of providing a resource required by the base station, Then, the VNFM and the VIM are instructed to expand the resources of the base station, so that the base station does not need to limit the traffic of the transmitted service or reduce the transmission code rate of the service, thereby improving the QoE of the user; if the capacity expansion fails, the base station requests the PCRF again. Congestion control.
  • an embodiment of the present invention provides a method for congestion control, which is implemented by a base station.
  • Line including:
  • Step 701 When detecting that the base station is congested, send a content expansion request message to the VNFM, where the capacity expansion request message carries a resource parameter indicating a required resource size of the base station, where the capacity expansion request message is used to request the VNFM to allocate the base station according to the resource parameter. Resources needed.
  • the method further includes: if receiving the expansion failure message sent by the VNFM when the resource allocation fails, requesting the PCRF to perform congestion control on the base station according to the indication of the expansion failure message.
  • the base station when the base station is congested, the base station first requests the VNFM to expand its resources. If the capacity expansion is successful, the PCRF does not need to request the PCRF to limit the traffic of the service or reduce the transmission rate of the service, thereby improving the user. QoE; if the capacity expansion fails, the base station requests congestion control from the PCRF.
  • an embodiment of the present invention provides a device 800 for congestion control, including:
  • the receiving module 801 is configured to receive a capacity expansion request message, where the capacity expansion request message carries resource parameters for indicating a resource size required by the base station where congestion occurs;
  • the sending module 802 is configured to send the content expansion request message to the network function virtualization orchestrator NFVO, where the capacity expansion request message is used to request the NFVO to determine a virtualized infrastructure manager VIM capable of providing resources required by the base station;
  • the receiving module 801 is further configured to receive a resource reservation success message sent by the NFVO, where the resource reservation success message carries the identifier information of the VIM;
  • the requesting module 803 is configured to request, according to the resource parameter and the identifier information of the VIM, the VIM to allocate resources required by the base station, and configure the allocated resource on the base station to implement the base station Perform congestion control.
  • the requesting module 803 is configured to determine, according to the resource parameter, a resource size of a resource required by the base station;
  • the sending module 802 is further configured to send, according to the identifier information of the VIM, a resource allocation request message to the VIM, where the resource allocation request message carries the resource size, where the resource allocation request message is used to request the VIM Allocating resources according to the resource size;
  • the receiving module 801 is further configured to receive the allocated resource that is sent by the VIM.
  • the resource parameter is a resource size of a resource required by the base station or a service volume of a service in the base station that is not allocated a resource.
  • the receiving module 801 is further configured to receive a capacity expansion failure message sent by the NFVO, where the capacity expansion failure message carries an insufficient resource indication, and the capacity expansion failure message determines that the NFVO is not capable of providing the base station Sent when a resource is required for VIM;
  • the sending module 802 is further configured to send the contention failure message to the base station, where the resource shortage indication is used to instruct the base station to request a policy and a charging rule function PCRF to perform congestion control.
  • the sending module 802 is further configured to send an upgrade message to the NFVO, where the upgrade message carries the identifier information of the allocated resource, the identifier information of the base station, and the identifier information of the VIM, where the upgrade is performed.
  • the message is used to request the NFVO to associate the identification information of the allocated resource, the identity information of the base station, and the identifier information of the VIM.
  • an embodiment of the present invention provides a device 900 for congestion control, including:
  • a determining module 902 configured to determine, according to the resource parameter, a virtualized infrastructure manager VIM capable of providing resources required by the base station;
  • the sending module 903 is configured to send a resource reservation success message to the virtual network function manager VNFM, where the resource reservation success message carries the identifier information of the VIM, where the resource reservation success message is used to indicate the VNFM according to the The identification information of the VIM requests the VIM to allocate resources required by the base station and configure the allocated resources on the base station.
  • the determining module 902 is configured to determine, according to the resource parameter, a resource size of the resource required by the base station, and query, from a correspondence between the VIM and the idle resource quantity, whether the amount of the idle resource is greater than or equal to the resource. Size of VIM; if present, determine that the amount of free resources is greater than or equal to the funds The source size VIM acts as a VIM capable of providing the resources required by the base station.
  • the sending module 903 is further configured to: if it is determined that there is no VIM capable of providing the resource required by the base station, send a content expansion failure message to the VNFM, where the capacity expansion failure message carries an insufficient resource indication, and the expansion fails.
  • the message is used to request the VNFM to send the expansion failure message to the base station, where the resource shortage indication is used to instruct the base station to request a policy and a charging rule function PCRF to perform congestion control.
  • the sending module 903 is further configured to send a resource reservation request message to the VIM, where the resource reservation request message carries a resource size required by the base station, where the resource reservation request message is used. Requesting, by the VIM, whether the resource required by the base station can be provided according to the resource size;
  • the receiving module 901 is further configured to receive an upgrade message that is sent by the VNFM, where the upgrade message carries the identifier information of the allocated resource, the identifier information of the base station, and the identifier information of the VIM.
  • the device 900 further includes an association module 904, configured to associate identifier information of the allocated resource, identification information of the base station, and identifier information of the VIM.
  • the resource parameter is a resource size of a resource required by the base station or a service volume of a service in the base station that is not allocated a resource.
  • the base station when the base station is congested, receiving a capacity expansion request message, where the capacity expansion request message carries a resource parameter indicating a required resource size of the base station, and determining, according to the resource parameter, a VIM capable of providing a resource required by the base station, Then, the VNFM and the VIM are instructed to expand the resources of the base station, so that the base station does not need to limit the traffic of the transmitted service or reduce the transmission code rate of the service, thereby improving the QoE of the user; if the capacity expansion fails, the base station requests the PCRF again. Congestion control.
  • FIG. 10 is a device 1000 for congestion control according to an embodiment of the present invention, including:
  • the sending module 1001 is configured to send, when the base station is congested, a contention request message to the virtual network function manager VNFM, where the capacity expansion request message carries resource parameters for indicating a resource size required by the base station, and the capacity expansion request The message is used to request the VNFM to allocate resources required by the base station according to the resource parameter;
  • the running module 1002 is configured to, if the allocated resource sent by the VNFM when the resource is successfully allocated, run a service according to the allocated resource to implement congestion control.
  • the device 1000 further includes:
  • the device 1000 further includes a receiving module 1004;
  • the sending module 1001 is further configured to send, by the PCRF, a radio access network RAN user plane congestion indication;
  • the receiving module 1004 is configured to receive a resource control indication RCI rule that is sent by the PCRF according to the RAN user plane congestion indication.
  • the sending module 1001 is configured to send a content expansion request message to the VNFM according to the RCI rule.
  • the base station when the base station is congested, the base station first requests the VNFM to expand its resources. If the capacity expansion is successful, the PCRF does not need to request the PCRF to limit the traffic of the service or reduce the transmission rate of the service, thereby improving the user. QoE; if the capacity expansion fails, the base station requests congestion control from the PCRF.
  • FIG. 11 is a schematic structural diagram of a network element device according to an embodiment of the present invention.
  • the network element device 1100 may vary considerably depending on configuration or performance, and may include one or more processors 1101, a transceiver 1102, and a memory 1132, one or more storage media 1130 that store an application 1142 or data 1144 ( For example, one or one storage device in Shanghai).
  • the memory 1132 and the storage medium 1130 may be short-term storage or persistent storage.
  • the program stored on storage medium 1130 may include one or more modules (not shown), each of which may include a series of instruction operations in the network element device.
  • the processor 1122 can be configured to communicate with the storage medium 1130 to perform a series of instruction operations in the storage medium 1130 on the network element device 1100.
  • the network element device 1100 may also include one or more power sources 1126, one or more wired or wireless network interfaces 1150, one or more input and output interfaces 1158, one or more keyboards 1156, and/or one or more operations.
  • System 1141 such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, and the like.
  • the processor 1101 and the transceiver 1102 of the network element device have the following functions:
  • the transceiver 1102 is configured to receive a capacity expansion request message, where the capacity expansion request message carries resource parameters for indicating a resource size required by a base station where congestion occurs; and the network function virtualization orchestrator NFVO Sending the capacity expansion request message, where the capacity expansion request message is used to request the NFVO to determine a virtualized infrastructure manager VIM capable of providing resources required by the base station; and receiving a resource reservation success message sent by the NFVO, The resource reservation success message carries the identifier information of the VIM;
  • the processor 1101 is configured to request, according to the resource parameter and the identifier information of the VIM, the VIM to allocate resources required by the base station, and configure the allocated resources on the base station to implement The base station performs congestion control.
  • the processor 1101 is configured to determine, according to the resource parameter, a resource size of a resource required by the base station;
  • the resource parameter is a resource size of a resource required by the base station or a service volume of a service that is not allocated to the resource in the base station.
  • the transceiver 1101 is further configured to receive a capacity expansion failure message sent by the NFVO, where the capacity expansion failure message carries an insufficient resource indication, where the capacity expansion failure message is that the NFVO is determined to be unable to provide the base station.
  • the VIM of the required resource is sent; the contention failure message is sent to the base station, and the resource shortage indication is used to indicate that the base station requests the policy and the charging rule function PCRF to perform congestion control.
  • the contention request message is received, and the capacity expansion request message carries a resource parameter for indicating the resource size of the base station where the congestion occurs, and the resource is first expanded according to the resource parameter, and if the capacity expansion is successful, the base station is configured.
  • the capacity of the base station does not need to limit the traffic of the transmitted service or reduce the transmission rate of the service. Therefore, the base station has the resources to ensure that the user normally requests the service and improves the quality of the service transmission, and improves the QoE of the user. Congestion control is requested from the PCRF.
  • Network element device 1200 may also include one or more power sources 1226, one or more wired or wireless network interfaces 1250, one or more input and output interfaces 1258, one or more keyboards 1256, and/or one or more operations.
  • System 1241 such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, and the like.
  • the processor 1201 and the transceiver 1202 of the network element device have the following functions:
  • the transceiver 1202 is configured to receive a capacity expansion request message, where the capacity expansion request message carries resource parameters for indicating a resource size required by a base station where congestion occurs;
  • the processor 1201 is configured to determine, according to the resource parameter, a virtualized infrastructure manager VIM capable of providing resources required by the base station;
  • the transceiver 1202 is further configured to send a resource reservation success message to the virtual network function manager VNFM, where the resource reservation success message carries the identifier information of the VIM, where the resource reservation success message is used to indicate the
  • the VNFM requests the VIM to allocate resources required by the base station according to the identification information of the VIM, and configures the allocated resources on the base station.
  • the processor 1201 is configured to determine, according to the resource parameter, a resource size of the resource required by the base station, and query, from a correspondence between the VIM and the idle resource quantity, whether the amount of the idle resource is greater than or equal to the resource.
  • a VIM of a size if present, a VIM having an amount of idle resources greater than or equal to the size of the resource is determined as a VIM capable of providing resources required by the base station.
  • the transceiver 1202 is further configured to: if it is determined that there is no VIM capable of providing the resource required by the base station, send a content expansion failure message to the VNFM, where the capacity expansion failure message carries an insufficient resource indication, and the expansion fails.
  • the message is used to request the VNFM to send the expansion failure message to the base station, where the resource shortage indication is used to instruct the base station to request a policy and a charging rule function PCRF to perform congestion control.
  • the transceiver 1202 is further configured to send a resource reservation request message to the VIM.
  • the resource reservation request message carries a resource size required by the base station, and the resource reservation request message is used to request the VIM to determine whether the resource required by the base station can be provided according to the resource size;
  • the transceiver 1202 is further configured to receive an upgrade message sent by the VNFM, where the upgrade message carries identifier information of the allocated resource, identifier information of the base station, and identifier information of the VIM.
  • the processor 1201 is further configured to associate identifier information of the allocated resource, identifier information of the base station, and identifier information of the VIM.
  • the resource parameter is a resource size of a resource required by the base station or a service volume of a service that is not allocated to the resource in the base station.
  • the network element device provided by the embodiment of the present invention may be NFVO.
  • the NFVO may determine whether there is a VIM capable of providing resources of the base station. If yes, the VNFM requests the VIM to expand the resources of the base station. If the capacity expansion is successful, the base station does not need to The transmitted service performs traffic limiting or reduces the transmission rate of the service, thereby improving the QoE of the user; if the capacity expansion fails, the base station requests congestion control from the PCRF.
  • FIG. 13 is a schematic structural diagram of a network element device according to an embodiment of the present invention.
  • the network element device 1300 may generate a relatively large difference due to different configurations or performances, and may include one or more processors 1301, a transceiver 1302, and a memory 1332, one or more storage media 1330 that store an application 1342 or data 1344 ( For example, one or one storage device in Shanghai).
  • the memory 1332 and the storage medium 1330 may be short-term storage or persistent storage.
  • the program stored on the storage medium 1330 may include one or more modules (not shown), each of which may include a series of instruction operations in the network element device.
  • the processor 1322 can be configured to communicate with the storage medium 1330 to perform a series of instruction operations in the storage medium 1330 on the network element device 1300.
  • Network element device 1300 may also include one or more power sources 1326, one or more wired or wireless network interfaces 1350, one or more input and output interfaces 1358, one or more keyboards 1356, and/or one or more operations.
  • System 1341 such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, and the like.
  • the processor 1301 and the transceiver 1302 of the network element device have the following functions:
  • the transceiver 1302 is configured to: when the processor detects that the base station is congested, to the virtual network
  • the function manager VNFM sends a capacity expansion request message, where the capacity expansion request message carries a resource parameter for indicating the required resource size of the base station, and the capacity expansion request message is used to request the VNFM to allocate the base station according to the resource parameter. Resources required;
  • the processor 1301 is configured to: if the allocated resource that is sent by the VNFM when the resource is successfully allocated, run the service according to the allocated resource to implement congestion control.
  • the processor 1301 is further configured to: if receiving the expansion failure message sent by the VNFM when the resource allocation fails, requesting the policy and charging rule function PCRF according to the indication of the expansion failure message The base station performs congestion control.
  • the transceiver 1302 is configured to send a radio access network RAN user plane congestion indication to the PCRF, and receive a resource control indication RCI rule sent by the PCRF according to the RAN user plane congestion indication; according to the RCI rule. Send a capacity expansion request message to the VNFM.
  • the base station when the base station is congested, the base station first requests the VNFM to expand its resources. If the capacity expansion is successful, the PCRF does not need to request the PCRF to limit the traffic of the service or reduce the transmission rate of the service, thereby improving the user. QoE; if the capacity expansion fails, the base station requests congestion control from the PCRF.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

Abstract

本发明实施例提供了一种拥塞控制的方法及网元设备，涉及通信领域，所述方法包括：接收扩容请求消息，所述扩容请求消息携带用于表示发生拥塞的基站所需资源大小的资源参数；向网络功能虚拟化编排器NFVO发送所述扩容请求消息，所述扩容请求消息用于请求所述NFVO确定能够提供所述基站所需资源的虚拟化基础设施管理器VIM；接收所述NFVO发送的资源预留成功消息，所述资源预留成功消息携带所述VIM的标识信息；根据所述资源参数和所述VIM的标识信息，请求所述VIM分配所述基站所需的资源并在所述基站上配置所述分配的资源，以实现对所述基站进行拥塞控制。本发明能够提高业务传输质量或保证用户正常请求业务。

Description

一种拥塞控制的方法及网元设备 技术领域
本发明涉及通信领域，特别涉及一种拥塞控制的方法及网元设备。
背景技术
NFV(Network Function Virtulization，网络功能虚拟化)网络是一种能够将硬件和软件解耦的网络，使得网络设备的功能不再依赖于专用的硬件资源，网络资源可以灵活地共享。正是由于这种灵活共享网络资源，可以在NFV网络中快速开发或部署大量新业务。由于部署的业务越多，导致接入NFV网络的用户越多，大量的用户接入NFV网络常常导致NFV网络的数据面发生拥塞。
目前在NFV网络发生拥塞时，需要对拥塞进行控制以消除拥塞，实现过程可以为：eNB(evolved Node B，演进型基站)检测NFV网络是否发生拥塞，当检测到发生拥塞时，eNB向PCRF(Policy And Charging Rules Function，策略和计费规则功能)发送RAN(Radio Access Network，无线接入网)用户面拥塞指示；PCRF接收该RAN用户面拥塞指示，根据拥塞控制策略进行拥塞控制，例如阻止新用户接入NFV网络或降低NFV网络中的部分业务的码率，以达到减少负载的目的。
在实现本发明的过程中，发明人发现现有技术至少存在以下问题：
PCRF在对拥塞进行控制时，采用的策略都为阻止新用户接入或降低业务的码率，降低业务码率会降低业务传输质量，阻止新用户接入NFV网络会导致用户无法请求业务。
发明内容
为了提高业务传输质量或保证用户正常请求业务，本发明实施例提供了一种拥塞控制的方法及网元设备。所述技术方案如下：
第一方面，本发明提供了一种拥塞控制的方法，所述方法包括：
接收扩容请求消息，所述扩容请求消息携带用于表示发生拥塞的基站所需资源大小的资源参数；
向网络功能虚拟化编排器NFVO发送所述扩容请求消息，所述扩容请求消息用于请求所述NFVO确定能够提供所述基站所需资源的虚拟化基础设施管理器VIM；
接收所述NFVO发送的资源预留成功消息，所述资源预留成功消息携带所述VIM的标识信息；
根据所述资源参数和所述VIM的标识信息，请求所述VIM分配所述基站所需的资源并在所述基站上配置所述分配的资源，以实现对所述基站进行拥塞控制。
结合第一方面，在第一方面的第一种可能的实现方式中，所述根据所述资源参数和所述VIM的标识信息，请求所述VIM分配所述基站所需的资源，包括：
根据所述资源参数确定所述基站所需资源的资源大小；
根据所述VIM的标识信息向所述VIM发送资源分配请求消息，所述资源分配请求消息携带所述资源大小，所述资源分配请求消息用于请求所述VIM根据所述资源大小分配资源；
接收所述VIM发送的所述分配的资源。
结合第一方面或第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，所述资源参数为所述基站所需资源的资源大小或所述基站中未分配到资源的业务的业务量。
结合第一方面、第一方面的第一种可能的实现方式或第一方面的第二种可能的实现方式，在第一方面的第三种可能的实现方式中，所述方法还包括：
接收所述NFVO发送的扩容失败消息，所述扩容失败消息携带资源不足指示，所述扩容失败消息为所述NFVO确定没有能够提供所述基站所需资源的VIM时发送的；
向所述基站发送所述扩容失败消息，所述资源不足指示用于指示所述基站请求策略和计费规则功能PCRF进行拥塞控制。
结合第一方面或第一方面的第一种至第三种可能的实现方式中的任一种可能的实现方式，在第一方面的第四种可能的实现方式中，所述在所述基站上配置所述分配的资源之后，还包括：
向NFVO发送升级消息，所述升级消息携带所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息，所述升级消息用于请求所述 NFVO关联所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息。
第二方面，本发明提供了一种拥塞控制的方法，所述方法包括：
接收扩容请求消息，所述扩容请求消息携带用于表示发生拥塞的基站所需资源大小的资源参数；
根据所述资源参数，确定能够提供所述基站所需资源的虚拟化基础设施管理器VIM；
向虚拟网络功能管理器VNFM发送资源预留成功消息，所述资源预留成功消息携带所述VIM的标识信息，所述资源预留成功消息用于指示所述VNFM根据所述VIM的标识信息请求所述VIM分配所述基站所需的资源并将所述分配的资源配置在所述基站上。
结合第二方面，在第二方面的第一种可能的实现方式中，所述根据所述资源参数，确定能够提供所述基站所需资源的虚拟化基础设施管理器VIM，包括：
根据所述资源参数确定所述基站所需资源的资源大小；
从VIM与空闲资源量的对应关系中查询是否存空闲资源量大于或等于所述资源大小的VIM；
如果存在，确定空闲资源量大于或等于所述资源大小的VIM作为能够提供所述基站所需资源的VIM。
结合第二方面或第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，所述方法还包括：
如果确定没有能够提供所述基站所需资源的VIM，向所述VNFM发送扩容失败消息，所述扩容失败消息携带资源不足指示，所述扩容失败消息用于请求所述VNFM向所述基站发送所述扩容失败消息，所述资源不足指示用于指示所述基站请求策略和计费规则功能PCRF进行拥塞控制。
结合第二方面、第二方面的第一种可能的实现方式或第二方面的第二种可能的实现方式，在第二方面的第三种可能的实现方式中，所述向虚拟网络功能管理器VNFM发送资源预留成功消息之前，还包括：
向所述VIM发送资源预留请求消息，所述资源预留请求消息携带所述基站所需的资源大小，所述资源预留请求消息用于请求所述VIM根据所述资源大小确定是否能提供所述基站所需的资源；
接收所述VIM在确定出能提供所述基站所需的资源时发送的资源预留成功消息。
结合第二方面或第二方面的第一种至第三种可能的实现方式中的任一种可能的实现方式，在第二方面的第四种可能的实现方式中，所述向虚拟网络功能管理器VNFM发送资源预留成功消息之后，还包括：
接收所述VNFM发送的升级消息，所述升级消息携带所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息；
关联所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息。
结合第二方面或第二方面的第一种至第四种可能的实现方式中的任一种可能的实现方式，在第二方面的第五种可能的实现方式中，所述资源参数为所述基站所需资源的资源大小或所述基站中未分配到资源的业务的业务量。
第三方面，本发明提供了一种拥塞控制的方法，所述方法包括：
当检测到基站发生拥塞时，向虚拟网络功能管理器VNFM发送扩容请求消息，所述扩容请求消息携带用于表示所述基站所需资源大小的资源参数，所述扩容请求消息用于请求所述VNFM根据所述资源参数分配所述基站所需的资源；
如果接收到所述VNFM在分配资源成功时发送的所述分配的资源，则根据所述分配的资源运行业务，以实现拥塞控制。
结合第三方面，在第三方面的第一种可能的实现方式中，所述方法还包括：
如果接收到所述VNFM在分配资源失败时发送的扩容失败消息，则根据所述扩容失败消息的指示请求策略和计费规则功能PCRF对所述基站进行拥塞控制。
结合第三方面或第三方面的第一种可能的实现方式，在第三方面的第二种可能的实现方式中，所述向虚拟网络功能管理器VNFM发送扩容请求消息之前，还包括：
向PCRF发送无线接入网RAN用户面拥塞指示；
接收所述PCRF根据所述RAN用户面拥塞指示发送的资源控制指示RCI规则；
相应的，所述向虚拟网络功能管理器VNFM发送扩容请求消息，包括：
根据所述RCI规则，向VNFM发送扩容请求消息。
第四方面，本发明提供了一种网元设备，所述网元设备包括：收发器和处理器；
所述收发器，用于接收扩容请求消息，所述扩容请求消息携带用于表示发生拥塞的基站所需资源大小的资源参数；向网络功能虚拟化编排器NFVO发送所述扩容请求消息，所述扩容请求消息用于请求所述NFVO确定能够提供所述基站所需资源的虚拟化基础设施管理器VIM；接收所述NFVO发送的资源预留成功消息，所述资源预留成功消息携带所述VIM的标识信息；
所述处理器，用于根据所述资源参数和所述VIM的标识信息，请求所述VIM分配所述基站所需的资源并在所述基站上配置所述分配的资源，以实现对所述基站进行拥塞控制。
结合第四方面，在第四方面的第一种可能的实现方式中，所述处理器，用于根据所述资源参数确定所述基站所需资源的资源大小；
所述收发器，还用于根据所述VIM的标识信息向所述VIM发送资源分配请求消息，所述资源分配请求消息携带所述资源大小，所述资源分配请求消息用于请求所述VIM根据所述资源大小分配资源；接收所述VIM发送的所述分配的资源。
结合第四方面或第四方面的第一种可能的实现方式，在第四方面的第二种可能的实现方式中，所述资源参数为所述基站所需资源的资源大小或所述基站中未分配到资源的业务的业务量。
结合第四方面、第四方面的第一种可能的实现方式或第四方面的第二种可能的实现方式，在第四方面的第三种可能的实现方式中，
所述收发器，还用于接收所述NFVO发送的扩容失败消息，所述扩容失败消息携带资源不足指示，所述扩容失败消息为所述NFVO在确定没有能够提供所述基站所需资源的VIM时发送的；向所述基站发送所述扩容失败消息，所述资源不足指示用于指示所述基站请求策略和计费规则功能PCRF进行拥塞控制。
结合第四方面或第四方面的第一种至第三种可能的实现方式中的任一种可能的实现方式，在第四方面的第四种可能的实现方式中，
所述收发器，还用于向NFVO发送升级消息，所述升级消息携带所述分配 的资源的标识信息、所述基站的标识信息和所述VIM的标识信息，所述升级消息用于请求所述NFVO关联所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息。
第五方面，本发明提供了一种网元设备，所述网元设备包括：收发器和处理器；
所述收发器，用于接收扩容请求消息，所述扩容请求消息携带用于表示发生拥塞的基站所需资源大小的资源参数；
所述处理器，用于根据所述资源参数，确定能够提供所述基站所需资源的虚拟化基础设施管理器VIM；
所述收发器，还用于向虚拟网络功能管理器VNFM发送资源预留成功消息，所述资源预留成功消息携带所述VIM的标识信息，所述资源预留成功消息用于指示所述VNFM根据所述VIM的标识信息请求所述VIM分配所述基站所需的资源并将所述分配的资源配置在所述基站上。
结合第五方面，在第五方面的第一种可能的实现方式中，
所述处理器，用于根据所述资源参数确定所述基站所需资源的资源大小；从VIM与空闲资源量的对应关系中查询是否存空闲资源量大于或等于所述资源大小的VIM；如果存在，确定空闲资源量大于或等于所述资源大小的VIM作为能够提供所述基站所需资源的VIM。
结合第五方面或第五方面的第一种可能的实现方式，在第五方面的第二种可能的实现方式中，所述方法还包括：
所述收发器，还用于如果确定没有能够提供所述基站所需资源的VIM，向所述VNFM发送扩容失败消息，所述扩容失败消息携带资源不足指示，所述扩容失败消息用于请求所述VNFM向所述基站发送所述扩容失败消息，所述资源不足指示用于指示所述基站请求策略和计费规则功能PCRF进行拥塞控制。
结合第五方面、第五方面的第一种可能的实现方式或第五方面的第二种可能的实现方式，在第五方面的第三种可能的实现方式中，
所述收发器，还用于向所述VIM发送资源预留请求消息，所述资源预留请求消息携带所述基站所需的资源大小，所述资源预留请求消息用于请求所述VIM根据所述资源大小确定是否能提供所述基站所需的资源；接收所述VIM 在确定出能提供所述基站所需的资源时发送的资源预留成功消息。
结合第五方面或第五方面的第一种至第三种可能的实现方式中的任一种可能的实现方式，在第五方面的第四种可能的实现方式中，
所述收发器，还用于接收所述VNFM发送的升级消息，所述升级消息携带所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息；
所述处理器，还用于关联所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息。
结合第五方面或第五方面的第一种至第四种可能的实现方式中的任一种可能的实现方式，在第五方面的第五种可能的实现方式中，
所述资源参数为所述基站所需资源的资源大小或所述基站中未分配到资源的业务的业务量。
第六方面，本发明提供了一种网元设备，所述网元设备包括：处理器和收发器；
所述收发器，用于当所述处理器检测到基站发生拥塞时，向虚拟网络功能管理器VNFM发送扩容请求消息，所述扩容请求消息携带用于表示所述基站所需资源大小的资源参数，所述扩容请求消息用于请求所述VNFM根据所述资源参数分配所述基站所需的资源；
所述处理器，用于如果接收到所述VNFM在分配资源成功时发送的所述分配的资源，则根据所述分配的资源运行业务，以实现拥塞控制。
结合第六方面，在第六方面的第一种可能的实现方式中，
所述处理器，还用于如果接收到所述VNFM在分配资源失败时发送的扩容失败消息，则根据所述扩容失败消息的指示请求策略和计费规则功能PCRF对所述基站进行拥塞控制。
结合第六方面或第六方面的第一种可能的实现方式，在第六方面的第二种可能的实现方式中，
所述收发器，用于向PCRF发送无线接入网RAN用户面拥塞指示，接收所述PCRF根据所述RAN用户面拥塞指示发送的资源控制指示RCI规则；根据所述RCI规则，向VNFM发送扩容请求消息。
在本发明实施例中，基站发生拥塞时，先为基站的资源进行扩容，如果扩容成功，就不需要对传输的业务进行限流或降低业务的传输码率，从而使基站 有资源保证用户正常请求业务以及提高业务传输质量。如果扩容失败，基站再向PCRF请求进行拥塞控制，保证能够成功进行拥塞控制。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的一种网络架构示意图；
图2是本发明实施例提供的一种拥塞控制的方法流程图；
图3是本发明另一实施例提供的一种拥塞控制的方法流程图；
图4是本发明另一实施例提供的一种拥塞控制的方法流程图；
图5是本发明另一实施例提供的一种拥塞控制的方法流程图；
图6是本发明另一实施例提供的一种拥塞控制的方法流程图；
图7是本发明另一实施例提供的一种拥塞控制的方法流程图；
图8是本发明实施例提供的一种拥塞控制的装置结构示意图；
图9是本发明另一实施例提供的一种拥塞控制的装置结构示意图；
图10是本发明另一实施例提供的一种拥塞控制的装置结构示意图；
图11是本发明实施例提供的一种网元设备结构示意图；
图12是本发明另一实施例提供的一种网元设备结构示意图；
图13是本发明另一实施例提供的一种网元设备结构示意图。
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，下面将结合附图对本发明实施方式作进一步地详细描述。
参见图1，图1是本发明实施例应用的NFV网络架构图，该网络架构有基站、MME(Mobile Managenment Entity，移动管理实体)、SGW(Serving GateWay，服务网关)、PGW(PDN GateWay，PDN(Public Data Network，公用数据网)网关)、PCRF、TDF(Traffic Detection Function，数据传输检测功能)、VNFM(VNF Manager，VNF(Virtualised Network Function，虚拟网络功能)管理器)、 NFVO(Network Functions Virtualization Orchestrator网络功能虚拟化编排器)和VIM(Virtualization Infrastructure Manager，虚拟化基础设施管理器)等网元组成。其中，在本发明实施例中，基站可以为eNB。
在NFV网络中，PCRF用于在基站发生拥塞时对基站进行拥塞控制，VNFM用于对NFV网络中的硬件资源进行管理，VIM用于对NFV网络中的软件资源进行管理，该软件资源可以为VM(Virtual Machine，虚拟机)，NFVO用于对NFV网络中的各VIM和各VIM中的资源进行管理。TDF可内置于PGW，也可以外置于PGW，用于在网络中进行DPI(Deep Dacket Inspection，深度包检测)监测和执行策略控制。
进一步地，参见图1，该网络架构中还可以包括NMS(Network Management System，网络管理系统)，NMS用于帮助VNFM对NFV网络中的硬件资源进行管理。其中，NMS可以集成在VNFM中，是VNFM中的一功能模块，也可以是与VNFM相分离的设备。
参见图1，由NFV网络中的硬件资源、虚拟资源和虚拟层组成的架构系统被称为NFVI(Network Function Virtulization Infrastructure，网络功能虚拟化基础设施)，例如，参见图1，NFVI的最上层是虚拟资源，这些虚拟资源可以为VM，最底层是硬件资源(虚线框是由各硬件设备组成的拓扑结构)，位于中间层的hypervisor(虚拟机机监视器)是虚拟层，用于协调硬件设备和VM，例如在硬件设备上为VM分配内存、CPU(Central Processing Unit，中央处理器)、磁盘等硬件资源。
参见图2，本发明实施例提供了一种拥塞控制的方法，本方法由VNFM来执行，包括：
步骤201：接收扩容请求消息，该扩容请求消息携带用于表示发生拥塞的基站所需资源大小的资源参数。
VNFM如何接收扩容请求消息将结合图3、图4和图5的实施例具体描述。
步骤202：向NFVO发送该扩容请求消息，该扩容请求消息用于请求NFVO确定能够提供基站所需资源的VIM。
步骤203：接收NFVO发送的资源预留成功消息，该资源预留成功消息携带VIM的标识信息。
步骤204：根据该资源参数和VIM的标识信息，请求VIM分配基站所需 的资源并在基站上配置分配的资源，以实现对基站进行拥塞控制。
可选的，由于NFVO对NFV网络中的各VIM和各VIM中的资源进行管理，为了便于NFVO管理，还可以在基站上配置分配的资源后，向NFVO发送升级消息，该升级消息携带该资源的标识信息、基站的标识信息和VIM的标识信息，以请求NFVO关联该资源的标识信息、基站的标识信息和VIM的标识信息。
在本发明实施例中，接收扩容请求消息，该扩容请求消息携带用于表示发生拥塞的基站所资源大小的资源参数，根据该资源参数先为基站的资源进行扩容，如果扩容成功，为基站配置扩容的资源，基站就不需要对传输的业务进行限流或降低业务的传输码率，从而使基站有资源保证用户正常请求业务以及提高业务传输质量，提高用户的QoE(Quality of Experience，体验质量)。
参见图3，本发明实施例提供了一种拥塞控制的方法，包括：
步骤301：当基站发生拥塞时，基站向VNFM发送扩容请求消息，该扩容请求消息携带用于表示基站所需资源大小的资源参数。
该资源参数可以为基站所需资源的资源大小或基站中未分配到资源的业务的业务量。其中，当大量的用户向基站请求业务时，可能导致基站没有足够的资源分配给业务，导致基站发生拥塞；基站可以根据未分配到资源的业务的业务量，计算出所需要的资源大小，向VNFM发送携带该资源大小的扩容请求消息，请求VNFM进行拥塞控制；或者，基站向VNFM发送携带未分配到资源的业务的业务量的扩容请求消息，请求VNFM进行拥塞控制。
其中，在本实施例中，基站请求的资源可以为VM，该扩容请求消息的英文形式为scaling request。
步骤302：VNFM接收该扩容请求消息，向NFVO发送该扩容请求消息。
步骤303：NFVO接收该扩容请求消息，根据该扩容请求消息携带的资源参数，确定是否有VIM能够提供基站所需的资源。
NFV网络中包括多个VIM，每个VIM中拥有大量的资源，VIM可以为NFV网络中的网元分配用于传输业务的资源。NFVO用于管理NFV网络中的各VIM，在NVFO中保存有各VIM剩余的空闲资源量，即NVFO中存储有VIM与空闲资源量的对应关系。
本步骤可以为：NFVO接收该扩容请求消息，根据该扩容请求消息携带的 资源参数确定基站所需资源的资源大小，从VIM与空闲资源量的对应关系中查询是否存在空闲资源量大于或等于该资源大小的VIM，如果存在，确定有VIM能够提供基站所需的资源；如果不存在，则确定没有VIM能够提供基站所需的资源。
其中，如果该资源参数为资源大小，NFVO直接将该资源参数作为基站所需资源的资源大小，如果该资源参数为业务量，NFVO根据该业务量计算出基站所需资源的资源大小。
步骤304：NFVO如果确定出有VIM能够提供基站所需的资源，确定能够提供基站所需资源的VIM，向该VIM发送资源预留请求消息，该资源预留请求消息携带基站所需的资源大小。
NFVO可以从空闲资源量与VIM的对应关系中确定一个空闲资源量大于或等于基站所需资源大小的VIM作为能够提供基站所需资源的VIM。由于在NFVO中存储VIM中的空闲资源量可能与VIM中实际空闲资源量存在差异，所以VNFO可以向确定的VIM发送资源预留请求消息，请求VIM确认是否能够提供基站所需的资源。
步骤305：VIM接收该资源预留请求消息，根据该资源预留请求消息携带的资源大小确定是否有足够资源，如果有，向NFVO发送资源预留成功消息。
VIM可以获取自身剩余的空闲资源量，如果该空闲资源量大于或等于该资源预留请求消息携带的资源大小，则确定有足够资源，否则，确定没有足够的资源。
如果没有足够的资源，向NFVO发送资源预留失败消息，NFVO接收该资源预留失败消息后可以重新确定能够提供基站所需资源的VIM。
步骤306：NFVO接收该资源预留成功消息，向VNFM发送该资源预留成功消息，该资源预留成功消息携带该VIM的标识信息。
NFVO接收该资源预留成功消息后，可以向该资源预留成功消息中添加该VIM的标识信息，然后向VNFM发送添加VIM的标识信息的该资源预留成功消息。
在本实施例中，NFVO确定能够提供基站所需资源的VIM后，可以直接向VNFM发送资源预留成功消息，该资源预留成功消息携带该VIM的标识信息，在这种情况下NFVO不向确定的VIM发送资源预留请求消息，请求确定的VIM确认。
步骤307：VNFM接收该资源预留成功消息，根据该资源预留成功消息携带的VIM的标识信息向该VIM发送资源分配请求消息，该资源分配请求消息携带基站所需资源的资源大小。
VNFM在发送资源分配请求消息之前，先根据该资源参数确定出基站所需资源的资源大小，具体为：如果该资源参数为资源大小，VNFM直接将该资源参数作为基站所需资源的资源大小，如果该资源参数为业务量，VNFM根据该业务量计算出基站所需资源的资源大小。
步骤308：VIM接收该资源分配请求消息，根据该资源分配请求消息携带的资源大小分配资源，向VNFM发送分配的资源。
在本发明实施例中，VIM分配的资源为VM，可以在NFV网络中传输。
步骤309：VNFM接收VIM分配的资源，将该资源配置在基站上，以实现对基站进行拥塞控制。
其中，需要说明的是：基站发送的扩容请求消息中携带基站的标识信息，VNFM可以根据基站的标识信息，向基站发送该资源，基站接收该资源，将该资源分配给未分配到资源的业务，通过该资源运行该业务，以实现将该资源配置在基站上。
VNFM将VIM分配的资源配置在基站上，使得基站有足够的资源来传输业务，从而解决了基站发生的拥塞，实现了拥塞控制。由于为基站分配了资源，使得基站有足够的资源来传输业务，相比对业务进行限流或降低业务的传输码率等拥塞控制手段，大大提高了用户的QoE。
步骤310：VNFM向NFVO发送升级消息，该升级消息携带分配的资源的标识信息、基站的标识信息和该VIM的标识信息。
在本实施例中，如果资源为VM，则该资源的标识信息为VM的标识信息。
步骤311：NFVO接收该升级消息，关联该升级消息携带的资源的标识信息、基站的标识信息和VIM的标识信息，结束操作。
由于NFVO对整个NFV网络中的各VIM和各VIM中的资源进行管理，所以NFVO需要关联该升级消息携带的该资源的标识信息、基站的标识信息和该VIM的标识信息。
NFVO还可以从VIM与空闲资源量的对应关系中将该VIM的空闲资源量减去基站所需资源的资源大小。
步骤312：如果NFVO确定出没有VIM能够提供基站所需的资源，NFVO 向VNFM发送扩容失败消息，该扩容失败消息携带资源不足指示。
步骤313：VNFM接收该扩容失败消息，向基站发送该扩容失败消息。
步骤314：基站接收该扩容失败消息，向PCRF发送RAN用户面拥塞指示。
该RAN用户面拥塞指示还可以携带扩容失败的指示信息。
本步骤可以为：基站向MME发送该RAN用户面拥塞指示，MME接收该RAN用户面拥塞指示，并向SGW发送该RAN用户面拥塞指示；SGW接收该RAN用户面拥塞指示，向MME发送用户面拥塞指示应答消息，以及向PGW发送该RAN用户面拥塞指示；PGW接收该该RAN用户面拥塞指示，向SGW发送用户面拥塞指示应答消息，以及向PCRF发送该RAN用户面拥塞指示。
步骤315：PCRF接收该RAN用户面拥塞指示，根据拥塞控制策略对基站进行拥塞控制。
PCRF根据RAN用户面拥塞指示携带的扩容失败的指示信息确定出基站请求扩容失败，然后采用拥塞控制策略对基站进行拥塞控制。例如，该拥塞控制策略可以为对基站进行限流，即阻止新用户接入基站并向基站请求业务，再如，该拥塞控制策略可以为降低传输业务的码率，如控制基站将正在传输的高清业务降低为标清业务。
在本发明实施例中，基站发生拥塞时，基站先请求VNFM为其资源进行扩容，如果扩容成功，就不需要对传输的业务进行限流或降低业务的传输码率，从而使基站有资源保证用户正常请求业务以及提高业务传输质量，提高用户的QoE；如果扩容失败，基站再向PCRF请求进行拥塞控制。
参见图4，本发明实施例提供了一种拥塞控制的方法，包括：
步骤401：当基站发生拥塞时，基站向PCRF发送RAN用户面拥塞指示。
基站向PCRF发送RAN用户面拥塞指示的具体过程可以参照图3中的步骤314相关内容，在此不再详细说明。
其中，当大量的用户向基站请求业务时，可能导致基站没有足够的资源分配给业务，导致基站发生拥塞，当发生拥塞时，基站开始执行本步骤。
步骤402：PCRF接收该RAN用户面拥塞指示，向基站发送RCI(Resource control indication，资源控制指示)规则，该RCI规则用于指示基站请求VNFM扩容资源。
步骤403：基站接收该RCI规则，根据该RCI规则向VNFM发送扩容请 求消息，该扩容请求消息携带用于表示基站所需资源大小的资源参数。
该资源参数可以为基站所需资源的资源大小或基站中未分配到资源的业务的业务量。基站可以根据未分配到资源的业务的业务量，计算出所需要的资源大小，向VNFM发送携带该资源大小的扩容请求消息，请求VNFM进行拥塞控制；或者，基站向VNFM发送携带未分配到资源的业务的业务量的扩容请求消息，请求VNFM进行拥塞控制。
其中，在本实施例中，基站请求的资源可以为VM，该扩容请求消息的英文形式为scaling request。
步骤404-步骤415：分别与图3中的步骤302-步骤313相同，在此不再详细说明。
步骤416：基站接收VNFM发送的扩容失败消息，向PCRF发送该扩容失败消息。
可选的，该扩容失败消息还可以携带扩容失败的指示信息。
步骤417：PCRF接收该扩容失败消息，根据拥塞控制策略对基站进行拥塞控制。
PCRF根据该扩容失败消息携带的扩容失败的指示信息确定出基站请求扩容失败，然后采用拥塞控制策略对基站进行拥塞控制。
在本发明实施例中，基站发生拥塞时，基站请求PCRF进行拥塞控制，PCRF确定出基站还未请求VNFM扩容资源时，向基站发送RCI规则，通过该RCI规则先指示基站请求VNFM为基站的资源进行扩容，如果扩容成功，就不需要对传输的业务进行限流或降低业务的传输码率，从而使基站有资源保证用户正常请求业务以及提高业务传输质量，提高用户的QoE；如果扩容失败，PCRF再对基站进行拥塞控制。
参见图5，本发明实施例提供了一种拥塞控制的方法，包括：
步骤501：当基站发生拥塞时，基站向PCRF发送RAN用户面拥塞指示，该RAN用户面拥塞指示携带基站所需资源的资源参数。
该资源参数可以为基站所需资源的资源大小或基站中未分配到资源的业务的业务量。其中，当大量的用户向基站请求业务时，可能导致基站没有足够的资源分配给业务，导致基站发生拥塞；基站可以根据未分配到资源的业务的业务量，计算出所需要的资源大小，向PCRF发送携带该资源大小的RAN用 户面拥塞指示，请求PCRF进行拥塞控制；或者，基站向PCRF发送携带未分配到资源的业务的业务量的扩容请求消息，请求PCRF进行拥塞控制。
基站向PCRF发送RAN用户面拥塞指示的具体过程可以参照图3中的步骤314相关内容，在此不再详细说明。
步骤502：PCRF接收该RAN用户面拥塞指示，向NMS(Network Management System，网络管理系统)发送扩容请求消息，该扩容请求消息携带基站的标识信息和用于表示基站所需资源大小的资源参数。
其中，在本实施例中，基站请求的资源可以为VM，该扩容请求消息英文形式为scaling request。
步骤503：NMS接收该扩容请求消息，向VNFM发送该扩容请求消息，该扩容请求消息携带基站的标识信息和基站所需的资源大小。
NMS接收该扩容请求消息后，根据该扩容请求消息携带的资源参数确定基站所需的资源大小，然后将该扩容请求消息携带的资源参数替换为该资源大小。NMS根据该资源参数确定基站所需的资源大小的过程可以为：如果该资源参数为资源大小，则直接将该资源参数作为基站所需的资源大小；如果该资源参数为业务量，则根据该业务量计算出基站所需的资源大小。
步骤504-步骤514：分别与图3中的步骤302-步骤312相同，在此不再详细说明。
步骤515：VNFM接收NFVO发送的扩容失败消息，向PCRF发送该扩容失败消息。
VNFM还可以向NMS发送该扩容失败消息。该扩容失败消息还可以携带资源不足指示。
步骤516：PCRF接收该扩容失败消息，根据拥塞控制策略对基站进行拥塞控制。
PCRF根据该扩容失败消息携带的资源不足指示确定出基站请求扩容失败，然后采用拥塞控制策略对基站进行拥塞控制。
在本发明实施例中，基站发生拥塞时，基站请求PCRF进行拥塞控制，PCRF确定出基站还未请求VNFM扩容资源，先请求VNFM为基站的资源进行扩容，如果扩容成功，基站就不需要对传输的业务进行限流或降低业务的传输码率，从而使基站有资源保证用户正常请求业务以及提高业务传输质量，提高用户的QoE；如果扩容失败，PCRF再对基站进行拥塞控制。
参见图6，本发明实施例提供了一种拥塞控制的方法，本方法由NFVO来执行，包括：
步骤601：接收扩容请求消息，该扩容请求消息携带用于表示发生拥塞的基站所需资源大小的资源参数。
NFVO如何接收扩容请求消息将结合图3、图4和图5的实施例具体描述。
步骤602：根据该资源参数，确定能够提供该基站所需资源的VIM。
步骤603：向VNFM发送资源预留成功消息，该资源预留成功消息携带VIM的标识信息，该资源预留成功消息用于指示VNFM根据VIM的标识信息请求VIM分配基站所需的资源并将分配的资源配置在基站上。
可选的，在步骤602中，当确定出VIM时，可以向VIM发送资源预留请求消息，该资源预留请求消息携带基站所需资源的资源大小，该资源预留请求消息用于请求VIM根据该资源大小确认是否能够提供基站所需要的资源；接收VIM确认能够提供基站所需资源时发送的资源预留成功消息，然后再向VNFM发送资源预留成功消息。
由于NFVO中记录的VIM中的空闲资源量和VIM中的实际空闲资源量存在差异，所以为了能成功地为基站分配资源，向VIM发送资源预留请求消息，以请求VIM确认。
可选的，在步骤603之后，还可以接收VNFM发送的升级消息，该升级消息携带VIM分配的资源的标识信息、基站的标识信息和VIM的标识信息，关联该升级消息携带的VIM分配的资源的标识信息、基站的标识信息和VIM的标识信息。由于VNFM需要对NFV网络中的各VIM和各VIM中的资源进行管理，所以关联VIM分配的资源的标识信息、基站的标识信息和VIM的标识信息，可以便于VNFM管理。
在本发明实施例中，当基站发生拥塞时，接收扩容请求消息，该扩容请求消息携带用于表示该基站所需资源大小的资源参数，根据该资源参数确定能够提供基站所需资源的VIM，然后指示VNFM和该VIM先为基站的资源进行扩容，如此基站就不需要对传输的业务进行限流或降低业务的传输码率，从而提高用户的QoE；如果扩容失败，基站再向PCRF请求进行拥塞控制。
参见图7，本发明实施例提供了一种拥塞控制的方法，本方法由基站来执 行，包括：
步骤701：当检测到基站发生拥塞时，向VNFM发送扩容请求消息，该扩容请求消息携带用于表示基站所需资源大小的资源参数，该扩容请求消息用于请求VNFM根据该资源参数分配基站所需的资源。
基站如何向VNFM发送扩容请求消息将结合图3、图4和图5的实施例具体描述。
步骤702：如果接收到VNFM在分配资源成功时发送分配的资源，则根据分配的资源运行业务，以实现拥塞控制。
可选的，该方法还包括：如果接收到VNFM在分配资源失败时发送的扩容失败消息，则根据该扩容失败消息的指示请求PCRF对基站进行拥塞控制。
在本发明实施例中，基站发生拥塞时，基站先请求VNFM为其资源进行扩容，如果扩容成功，就不需要请求PCRF对其传输的业务进行限流或降低业务的传输码率，从而提高用户的QoE；如果扩容失败，基站再向PCRF请求进行拥塞控制。
参见图8，本发明实施例提供了一种拥塞控制的装置800，包括：
接收模块801，用于接收扩容请求消息，所述扩容请求消息携带用于表示发生拥塞的基站所需资源大小的资源参数；
发送模块802，用于向网络功能虚拟化编排器NFVO发送所述扩容请求消息，所述扩容请求消息用于请求所述NFVO确定能够提供所述基站所需资源的虚拟化基础设施管理器VIM；
所述接收模块801，还用于接收所述NFVO发送的资源预留成功消息，所述资源预留成功消息携带所述VIM的标识信息；
请求模块803，用于根据所述资源参数和所述VIM的标识信息，请求所述VIM分配所述基站所需的资源并在所述基站上配置所述分配的资源，以实现对所述基站进行拥塞控制。
可选的，所述请求模块803，用于根据所述资源参数确定所述基站所需资源的资源大小；
所述发送模块802，还用于根据所述VIM的标识信息向所述VIM发送资源分配请求消息，所述资源分配请求消息携带所述资源大小，所述资源分配请求消息用于请求所述VIM根据所述资源大小分配资源；
所述接收模块801，还用于接收所述VIM发送的所述分配的资源。
其中，所述资源参数为所述基站所需资源的资源大小或所述基站中未分配到资源的业务的业务量。
可选的，所述接收模块801，还用于接收所述NFVO发送的扩容失败消息，所述扩容失败消息携带资源不足指示，所述扩容失败消息为所述NFVO确定没有能够提供所述基站所需资源的VIM时发送的；
所述发送模块802，还用于向所述基站发送所述扩容失败消息，所述资源不足指示用于指示所述基站请求策略和计费规则功能PCRF进行拥塞控制。
可选的，所述发送模块802，还用于向NFVO发送升级消息，所述升级消息携带所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息，所述升级消息用于请求所述NFVO关联所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息。
在本发明实施例中，接收扩容请求消息，该扩容请求消息携带用于表示发生拥塞的基站所资源大小的资源参数，根据该资源参数先为基站的资源进行扩容，如果扩容成功，为基站配置扩容的资源，基站就不需要对传输的业务进行限流或降低业务的传输码率，从而使基站有资源保证用户正常请求业务以及提高业务传输质量，提高用户的QoE；如果扩容失败，基站再向PCRF请求进行拥塞控制。
参见图9，本发明实施例提供了一种拥塞控制的装置900，包括：
接收模块901，用于接收扩容请求消息，所述扩容请求消息携带用于表示发生拥塞的基站所需资源大小的资源参数；
确定模块902，用于根据所述资源参数，确定能够提供所述基站所需资源的虚拟化基础设施管理器VIM；
发送模块903，用于向虚拟网络功能管理器VNFM发送资源预留成功消息，所述资源预留成功消息携带所述VIM的标识信息，所述资源预留成功消息用于指示所述VNFM根据所述VIM的标识信息请求所述VIM分配所述基站所需的资源并将所述分配的资源配置在所述基站上。
可选的，所述确定模块902，用于根据所述资源参数确定所述基站所需资源的资源大小；从VIM与空闲资源量的对应关系中查询是否存空闲资源量大于或等于所述资源大小的VIM；如果存在，确定空闲资源量大于或等于所述资 源大小的VIM作为能够提供所述基站所需资源的VIM。
可选的，所述发送模块903，还用于如果确定没有能够提供所述基站所需资源的VIM，向所述VNFM发送扩容失败消息，所述扩容失败消息携带资源不足指示，所述扩容失败消息用于请求所述VNFM向所述基站发送所述扩容失败消息，所述资源不足指示用于指示所述基站请求策略和计费规则功能PCRF进行拥塞控制。
可选的，所述发送模块903，还用于向所述VIM发送资源预留请求消息，所述资源预留请求消息携带所述基站所需的资源大小，所述资源预留请求消息用于请求所述VIM根据所述资源大小确定是否能提供所述基站所需的资源；
所述接收模块901，还用于接收所述VIM在确定出能提供所述基站所需的资源时发送的资源预留成功消息。
可选的，所述接收模块901，还用于接收所述VNFM发送的升级消息，所述升级消息携带所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息；
所述装置900还包括关联模块904，所述关联模块904，用于关联所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息。
所述资源参数为所述基站所需资源的资源大小或所述基站中未分配到资源的业务的业务量。
在本发明实施例中，当基站发生拥塞时，接收扩容请求消息，该扩容请求消息携带用于表示该基站所需资源大小的资源参数，根据该资源参数确定能够提供基站所需资源的VIM，然后指示VNFM和该VIM先为基站的资源进行扩容，如此基站就不需要对传输的业务进行限流或降低业务的传输码率，从而提高用户的QoE；如果扩容失败，基站再向PCRF请求进行拥塞控制。
参见图10，图10是本发明实施例提供的一种拥塞控制的装置1000，包括：
发送模块1001，用于当检测到基站发生拥塞时，向虚拟网络功能管理器VNFM发送扩容请求消息，所述扩容请求消息携带用于表示所述基站所需资源大小的资源参数，所述扩容请求消息用于请求所述VNFM根据所述资源参数分配所述基站所需的资源；
运行模块1002，用于如果接收到所述VNFM在分配资源成功时发送的所述分配的资源，则根据所述分配的资源运行业务，以实现拥塞控制。
进一步地，所述装置1000还包括：
请求模块1003，用于如果接收到所述VNFM在分配资源失败时发送的扩容失败消息，则根据所述扩容失败消息的指示请求策略和计费规则功能PCRF对所述基站进行拥塞控制。
进一步地，该装置1000还包括接收模块1004；
所述发送模块1001，还用于向PCRF发送无线接入网RAN用户面拥塞指示；
所述接收模块1004，用于接收所述PCRF根据所述RAN用户面拥塞指示发送的资源控制指示RCI规则；
相应的，所述发送模块1001，用于根据所述RCI规则，向VNFM发送扩容请求消息。
在本发明实施例中，基站发生拥塞时，基站先请求VNFM为其资源进行扩容，如果扩容成功，就不需要请求PCRF对其传输的业务进行限流或降低业务的传输码率，从而提高用户的QoE；如果扩容失败，基站再向PCRF请求进行拥塞控制。
参见图11，图11是本发明实施例提供的网元设备的结构示意图。网元设备1100可因配置或性能不同而产生比较大的差异，可以包括一个或一个以上处理器1101、收发器1102和存储器1132，一个或一个以上存储应用程序1142或数据1144的存储介质1130(例如一个或一个以上海量存储设备)。其中，存储器1132和存储介质1130可以是短暂存储或持久存储。存储在存储介质1130的程序可以包括一个或一个以上模块(图示没标出)，每个模块可以包括对网元设备中的一系列指令操作。更进一步地，处理器1122可以设置为与存储介质1130通信，在网元设备1100上执行存储介质1130中的一系列指令操作。
网元设备1100还可以包括一个或一个以上电源1126，一个或一个以上有线或无线网络接口1150，一个或一个以上输入输出接口1158，一个或一个以上键盘1156，和/或，一个或一个以上操作系统1141，例如Windows ServerTM，Mac OS XTM，UnixTM，LinuxTM，FreeBSDTM等等。
在本发明中该网元设备的处理器1101和收发器1102具有以下功能：
所述收发器1102，用于接收扩容请求消息，所述扩容请求消息携带用于表示发生拥塞的基站所需资源大小的资源参数；向网络功能虚拟化编排器NFVO 发送所述扩容请求消息，所述扩容请求消息用于请求所述NFVO确定能够提供所述基站所需资源的虚拟化基础设施管理器VIM；接收所述NFVO发送的资源预留成功消息，所述资源预留成功消息携带所述VIM的标识信息；
所述处理器1101，用于根据所述资源参数和所述VIM的标识信息，请求所述VIM分配所述基站所需的资源并在所述基站上配置所述分配的资源，以实现对所述基站进行拥塞控制。
可选的，所述处理器1101，用于根据所述资源参数确定所述基站所需资源的资源大小；
所述收发器1102，还用于根据所述VIM的标识信息向所述VIM发送资源分配请求消息，所述资源分配请求消息携带所述资源大小，所述资源分配请求消息用于请求所述VIM根据所述资源大小分配资源；接收所述VIM发送的所述分配的资源。
可选的，所述资源参数为所述基站所需资源的资源大小或所述基站中未分配到资源的业务的业务量。
可选的，所述收发器1101，还用于接收所述NFVO发送的扩容失败消息，所述扩容失败消息携带资源不足指示，所述扩容失败消息为所述NFVO在确定没有能够提供所述基站所需资源的VIM时发送的；向所述基站发送所述扩容失败消息，所述资源不足指示用于指示所述基站请求策略和计费规则功能PCRF进行拥塞控制。
可选的，所述收发器1102，还用于向NFVO发送升级消息，所述升级消息携带所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息，所述升级消息用于请求所述NFVO关联所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息。
本发明实施例提供的网元设备可以为VNFM。
在本发明实施例中，接收扩容请求消息，该扩容请求消息携带用于表示发生拥塞的基站所资源大小的资源参数，根据该资源参数先为基站的资源进行扩容，如果扩容成功，为基站配置扩容的资源，基站就不需要对传输的业务进行限流或降低业务的传输码率，从而使基站有资源保证用户正常请求业务以及提高业务传输质量，提高用户的QoE；如果扩容失败，基站再向PCRF请求进行拥塞控制。
参见图12，图12是本发明实施例提供的网元设备的结构示意图。网元设备1200可因配置或性能不同而产生比较大的差异，可以包括一个或一个以上处理器1201、收发器1202和存储器1232，一个或一个以上存储应用程序1242或数据1244的存储介质1230(例如一个或一个以上海量存储设备)。其中，存储器1232和存储介质1230可以是短暂存储或持久存储。存储在存储介质1230的程序可以包括一个或一个以上模块(图示没标出)，每个模块可以包括对网元设备中的一系列指令操作。更进一步地，处理器1222可以设置为与存储介质1230通信，在网元设备1200上执行存储介质1230中的一系列指令操作。
网元设备1200还可以包括一个或一个以上电源1226，一个或一个以上有线或无线网络接口1250，一个或一个以上输入输出接口1258，一个或一个以上键盘1256，和/或，一个或一个以上操作系统1241，例如Windows ServerTM，Mac OS XTM，UnixTM，LinuxTM，FreeBSDTM等等。
在本发明中该网元设备的处理器1201和收发器1202具有以下功能：
所述收发器1202，用于接收扩容请求消息，所述扩容请求消息携带用于表示发生拥塞的基站所需资源大小的资源参数；
所述处理器1201，用于根据所述资源参数，确定能够提供所述基站所需资源的虚拟化基础设施管理器VIM；
所述收发器1202，还用于向虚拟网络功能管理器VNFM发送资源预留成功消息，所述资源预留成功消息携带所述VIM的标识信息，所述资源预留成功消息用于指示所述VNFM根据所述VIM的标识信息请求所述VIM分配所述基站所需的资源并将所述分配的资源配置在所述基站上。
可选的，所述处理器1201，用于根据所述资源参数确定所述基站所需资源的资源大小；从VIM与空闲资源量的对应关系中查询是否存空闲资源量大于或等于所述资源大小的VIM；如果存在，确定空闲资源量大于或等于所述资源大小的VIM作为能够提供所述基站所需资源的VIM。
可选的，所述收发器1202，还用于如果确定没有能够提供所述基站所需资源的VIM，向所述VNFM发送扩容失败消息，所述扩容失败消息携带资源不足指示，所述扩容失败消息用于请求所述VNFM向所述基站发送所述扩容失败消息，所述资源不足指示用于指示所述基站请求策略和计费规则功能PCRF进行拥塞控制。
可选的，所述收发器1202，还用于向所述VIM发送资源预留请求消息， 所述资源预留请求消息携带所述基站所需的资源大小，所述资源预留请求消息用于请求所述VIM根据所述资源大小确定是否能提供所述基站所需的资源；接收所述VIM在确定出能提供所述基站所需的资源时发送的资源预留成功消息。
可选的，所述收发器1202，还用于接收所述VNFM发送的升级消息，所述升级消息携带所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息；
所述处理器1201，还用于关联所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息。
可选的，所述资源参数为所述基站所需资源的资源大小或所述基站中未分配到资源的业务的业务量。
本发明实施例提供的网元设备可以为NFVO。
在本发明实施例中，当基站发生拥塞时，NFVO可以确定是否存在能够提供基站所资源的VIM，如果存在，使VNFM请求该VIM为基站的资源进行扩容，如果扩容成功，基站就不需要对传输的业务进行限流或降低业务的传输码率，从而提高用户的QoE；如果扩容失败，基站再向PCRF请求进行拥塞控制。
参见图13，图13是本发明实施例提供的网元设备的结构示意图。网元设备1300可因配置或性能不同而产生比较大的差异，可以包括一个或一个以上处理器1301、收发器1302和存储器1332，一个或一个以上存储应用程序1342或数据1344的存储介质1330(例如一个或一个以上海量存储设备)。其中，存储器1332和存储介质1330可以是短暂存储或持久存储。存储在存储介质1330的程序可以包括一个或一个以上模块(图示没标出)，每个模块可以包括对网元设备中的一系列指令操作。更进一步地，处理器1322可以设置为与存储介质1330通信，在网元设备1300上执行存储介质1330中的一系列指令操作。
网元设备1300还可以包括一个或一个以上电源1326，一个或一个以上有线或无线网络接口1350，一个或一个以上输入输出接口1358，一个或一个以上键盘1356，和/或，一个或一个以上操作系统1341，例如Windows ServerTM，Mac OS XTM，UnixTM，LinuxTM，FreeBSDTM等等。
在本发明中该网元设备的处理器1301和收发器1302具有以下功能：
所述收发器1302，用于当所述处理器检测到基站发生拥塞时，向虚拟网络 功能管理器VNFM发送扩容请求消息，所述扩容请求消息携带用于表示所述基站所需资源大小的资源参数，所述扩容请求消息用于请求所述VNFM根据所述资源参数分配所述基站所需的资源；
所述处理器1301，用于如果接收到所述VNFM在分配资源成功时发送的所述分配的资源，则根据所述分配的资源运行业务，以实现拥塞控制。
可选的，所述处理器1301，还用于如果接收到所述VNFM在分配资源失败时发送的扩容失败消息，则根据所述扩容失败消息的指示请求策略和计费规则功能PCRF对所述基站进行拥塞控制。
可选的，所述收发器1302，用于向PCRF发送无线接入网RAN用户面拥塞指示，接收所述PCRF根据所述RAN用户面拥塞指示发送的资源控制指示RCI规则；根据所述RCI规则，向VNFM发送扩容请求消息。
本发明实施例提供的网元设备可以为基站。
在本发明实施例中，基站发生拥塞时，基站先请求VNFM为其资源进行扩容，如果扩容成功，就不需要请求PCRF对其传输的业务进行限流或降低业务的传输码率，从而提高用户的QoE；如果扩容失败，基站再向PCRF请求进行拥塞控制。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本发明的较佳实施例，并不用以限制本发明，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。

Claims (28)

  1. 一种拥塞控制的方法，其特征在于，所述方法包括：
    接收扩容请求消息，所述扩容请求消息携带用于表示发生拥塞的基站所需资源大小的资源参数；
    向网络功能虚拟化编排器NFVO发送所述扩容请求消息，所述扩容请求消息用于请求所述NFVO确定能够提供所述基站所需资源的虚拟化基础设施管理器VIM；
    接收所述NFVO发送的资源预留成功消息，所述资源预留成功消息携带所述VIM的标识信息；
    根据所述资源参数和所述VIM的标识信息，请求所述VIM分配所述基站所需的资源并在所述基站上配置所述分配的资源，以实现对所述基站进行拥塞控制。
  2. 如权利要求1所述的方法，其特征在于，所述根据所述资源参数和所述VIM的标识信息，请求所述VIM分配所述基站所需的资源，包括：
    根据所述资源参数确定所述基站所需资源的资源大小；
    根据所述VIM的标识信息向所述VIM发送资源分配请求消息，所述资源分配请求消息携带所述资源大小，所述资源分配请求消息用于请求所述VIM根据所述资源大小分配资源；
    接收所述VIM发送的所述分配的资源。
  3. 如权利要求1或2所述的方法，其特征在于，所述资源参数为所述基站所需资源的资源大小或所述基站中未分配到资源的业务的业务量。
  4. 如权利要求1至3任一项权利要求所述的方法，其特征在于，所述方法还包括：
    接收所述NFVO发送的扩容失败消息，所述扩容失败消息携带资源不足指示，所述扩容失败消息为所述NFVO确定没有能够提供所述基站所需资源的VIM时发送的；
    向所述基站发送所述扩容失败消息，所述资源不足指示用于指示所述基站 请求策略和计费规则功能PCRF进行拥塞控制。
  5. 如权利要求1至4任一项权利要求所述的方法，其特征在于，所述在所述基站上配置所述分配的资源之后，还包括：
    向NFVO发送升级消息，所述升级消息携带所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息，所述升级消息用于请求所述NFVO关联所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息。
  6. 一种拥塞控制的方法，其特征在于，所述方法包括：
    接收扩容请求消息，所述扩容请求消息携带用于表示发生拥塞的基站所需资源大小的资源参数；
    根据所述资源参数，确定能够提供所述基站所需资源的虚拟化基础设施管理器VIM；
    向虚拟网络功能管理器VNFM发送资源预留成功消息，所述资源预留成功消息携带所述VIM的标识信息，所述资源预留成功消息用于指示所述VNFM根据所述VIM的标识信息请求所述VIM分配所述基站所需的资源并将所述分配的资源配置在所述基站上。
  7. 如权利要求6所述的方法，其特征在于，所述根据所述资源参数，确定能够提供所述基站所需资源的虚拟化基础设施管理器VIM，包括：
    根据所述资源参数确定所述基站所需资源的资源大小；
    从VIM与空闲资源量的对应关系中查询是否存空闲资源量大于或等于所述资源大小的VIM；
    如果存在，确定空闲资源量大于或等于所述资源大小的VIM作为能够提供所述基站所需资源的VIM。
  8. 如权利要求6或7所述的方法，其特征在于，所述方法还包括：
    如果确定没有能够提供所述基站所需资源的VIM，向所述VNFM发送扩容失败消息，所述扩容失败消息携带资源不足指示，所述扩容失败消息用于请求所述VNFM向所述基站发送所述扩容失败消息，所述资源不足指示用于指示所 述基站请求策略和计费规则功能PCRF进行拥塞控制。
  9. 如权利要求6至8任一项权利要求所述的方法，其特征在于，所述向虚拟网络功能管理器VNFM发送资源预留成功消息之前，还包括：
    向所述VIM发送资源预留请求消息，所述资源预留请求消息携带所述基站所需的资源大小，所述资源预留请求消息用于请求所述VIM根据所述资源大小确定是否能提供所述基站所需的资源；
    接收所述VIM在确定出能提供所述基站所需的资源时发送的资源预留成功消息。
  10. 如权利要求6至9任一项所述的方法，其特征在于，所述向虚拟网络功能管理器VNFM发送资源预留成功消息之后，还包括：
    接收所述VNFM发送的升级消息，所述升级消息携带所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息；
    关联所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息。
  11. 如权利要求6至10任一项权利要求所述的方法，其特征在于，所述资源参数为所述基站所需资源的资源大小或所述基站中未分配到资源的业务的业务量。
  12. 一种拥塞控制的方法，其特征在于，所述方法包括：
    当基站检测到所述基站发生拥塞时，向虚拟网络功能管理器VNFM发送扩容请求消息，所述扩容请求消息携带用于表示所述基站所需资源大小的资源参数，所述扩容请求消息用于请求所述VNFM根据所述资源参数分配所述基站所需的资源；
    如果接收到所述VNFM在分配资源成功时发送的所述分配的资源，则根据所述分配的资源运行业务，以实现拥塞控制。
  13. 如权利要求12所述的方法，其特征在于，所述方法还包括：
    如果接收到所述VNFM在分配资源失败时发送的扩容失败消息，则根据所 述扩容失败消息的指示请求策略和计费规则功能PCRF对所述基站进行拥塞控制。
  14. 如权利要求12或13所述的方法，其特征在于，所述向虚拟网络功能管理器VNFM发送扩容请求消息之前，还包括：
    向PCRF发送无线接入网RAN用户面拥塞指示；
    接收所述PCRF根据所述RAN用户面拥塞指示发送的资源控制指示RCI规则；
    所述向虚拟网络功能管理器VNFM发送扩容请求消息，包括：
    根据所述RCI规则，向VNFM发送扩容请求消息。
  15. 一种网元设备，其特征在于，所述网元设备包括：收发器和处理器；
    所述收发器，用于接收扩容请求消息，所述扩容请求消息携带用于表示发生拥塞的基站所需资源大小的资源参数；向网络功能虚拟化编排器NFVO发送所述扩容请求消息，所述扩容请求消息用于请求所述NFVO确定能够提供所述基站所需资源的虚拟化基础设施管理器VIM；接收所述NFVO发送的资源预留成功消息，所述资源预留成功消息携带所述VIM的标识信息；
    所述处理器，用于根据所述资源参数和所述VIM的标识信息，请求所述VIM分配所述基站所需的资源并在所述基站上配置所述分配的资源，以实现对所述基站进行拥塞控制。
  16. 如权利要求15所述的网元设备，其特征在于，所述处理器，用于根据所述资源参数确定所述基站所需资源的资源大小；
    所述收发器，还用于根据所述VIM的标识信息向所述VIM发送资源分配请求消息，所述资源分配请求消息携带所述资源大小，所述资源分配请求消息用于请求所述VIM根据所述资源大小分配资源；接收所述VIM发送的所述分配的资源。
  17. 如权利要求15或16所述的网元设备，其特征在于，所述资源参数为所述基站所需资源的资源大小或所述基站中未分配到资源的业务的业务量。
  18. 如权利要求15至17任一项权利要求所述的网元设备，其特征在于，
    所述收发器，还用于接收所述NFVO发送的扩容失败消息，所述扩容失败消息携带资源不足指示，所述扩容失败消息为所述NFVO确定没有能够提供所述基站所需资源的VIM时发送的；向所述基站发送所述扩容失败消息，所述资源不足指示用于指示所述基站请求策略和计费规则功能PCRF进行拥塞控制。
  19. 如权利要求15至18任一项权利要求所述的网元设备，其特征在于，
    所述收发器，还用于向NFVO发送升级消息，所述升级消息携带所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息，所述升级消息用于请求所述NFVO关联所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息。
  20. 一种网元设备，其特征在于，所述网元设备包括：收发器和处理器；
    所述收发器，用于接收扩容请求消息，所述扩容请求消息携带用于表示发生拥塞的基站所需资源大小的资源参数；
    所述处理器，用于根据所述资源参数，确定能够提供所述基站所需资源的虚拟化基础设施管理器VIM；
    所述收发器，还用于向虚拟网络功能管理器VNFM发送资源预留成功消息，所述资源预留成功消息携带所述VIM的标识信息，所述资源预留成功消息用于指示所述VNFM根据所述VIM的标识信息请求所述VIM分配所述基站所需的资源并将所述分配的资源配置在所述基站上。
  21. 如权利要求20所述的网元设备，其特征在于，
    所述处理器，用于根据所述资源参数确定所述基站所需资源的资源大小；从VIM与空闲资源量的对应关系中查询是否存空闲资源量大于或等于所述资源大小的VIM；如果存在，确定空闲资源量大于或等于所述资源大小的VIM作为能够提供所述基站所需资源的VIM。
  22. 如权利要求20或21所述的网元设备，其特征在于，
    所述收发器，还用于如果确定没有能够提供所述基站所需资源的VIM，向所述VNFM发送扩容失败消息，所述扩容失败消息携带资源不足指示，所述扩 容失败消息用于请求所述VNFM向所述基站发送所述扩容失败消息，所述资源不足指示用于指示所述基站请求策略和计费规则功能PCRF进行拥塞控制。
  23. 如权利要求20至22任一项权利要求所述的网元设备，其特征在于，
    所述收发器，还用于向所述VIM发送资源预留请求消息，所述资源预留请求消息携带所述基站所需的资源大小，所述资源预留请求消息用于请求所述VIM根据所述资源大小确定是否能提供所述基站所需的资源；接收所述VIM在确定出能提供所述基站所需的资源时发送的资源预留成功消息。
  24. 如权利要求20至23任一项所述的网元设备，其特征在于，
    所述收发器，还用于接收所述VNFM发送的升级消息，所述升级消息携带所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息；
    所述处理器，还用于关联所述分配的资源的标识信息、所述基站的标识信息和所述VIM的标识信息。
  25. 如权利要求20至24任一项权利要求所述的网元设备，其特征在于，所述资源参数为所述基站所需资源的资源大小或所述基站中未分配到资源的业务的业务量。
  26. 一种网元设备，其特征在于，所述网元设备包括：处理器和收发器；
    所述收发器，用于当所述处理器检测到基站发生拥塞时，向虚拟网络功能管理器VNFM发送扩容请求消息，所述扩容请求消息携带用于表示所述基站所需资源大小的资源参数，所述扩容请求消息用于请求所述VNFM根据所述资源参数分配所述基站所需的资源；
    所述处理器，用于如果接收到所述VNFM在分配资源成功时发送的所述分配的资源，则根据所述分配的资源运行业务，以实现拥塞控制。
  27. 如权利要求26所述的网元设备，其特征在于，
    所述处理器，还用于如果接收到所述VNFM在分配资源失败时发送的扩容失败消息，则根据所述扩容失败消息的指示请求策略和计费规则功能PCRF对所述基站进行拥塞控制。
  28. 如权利要求26或27所述的网元设备，其特征在于，
    所述收发器，用于向PCRF发送无线接入网RAN用户面拥塞指示，接收所述PCRF根据所述RAN用户面拥塞指示发送的资源控制指示RCI规则；根据所述RCI规则，向VNFM发送扩容请求消息。
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US20180098327A1 (en) 2018-04-05

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