WO2014067075A1 - Procédé permettant de désencombrer un réseau, dispositif de réseau central et dispositif de réseau d'accès - Google Patents

Procédé permettant de désencombrer un réseau, dispositif de réseau central et dispositif de réseau d'accès Download PDF

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Publication number
WO2014067075A1
WO2014067075A1 PCT/CN2012/083777 CN2012083777W WO2014067075A1 WO 2014067075 A1 WO2014067075 A1 WO 2014067075A1 CN 2012083777 W CN2012083777 W CN 2012083777W WO 2014067075 A1 WO2014067075 A1 WO 2014067075A1
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WIPO (PCT)
Prior art keywords
data flow
network device
core network
congestion
flow identifier
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PCT/CN2012/083777
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English (en)
Chinese (zh)
Inventor
陆伟
李岩
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2012/083777 priority Critical patent/WO2014067075A1/fr
Priority to CN201280001693.5A priority patent/CN103907323A/zh
Publication of WO2014067075A1 publication Critical patent/WO2014067075A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/12—Avoiding congestion; Recovering from congestion
    • H04L47/122—Avoiding congestion; Recovering from congestion by diverting traffic away from congested entities

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method for mitigating network congestion, a core network device, and an access network device.
  • the network side can modify the PCC rule (Policy and Charging Control rule) or ADC rule (Application Detection and Control).
  • QoS Quality of Service
  • MBR Maximum Bit Rate
  • GBR Guard Bit Rate
  • the QoS parameters may include: QCI (QoS Class Identifier), ARP (Allocation and Retention Priority), MBR, GBR, and Up/Down maximum bit rate (UL/DL maximum bit rate) )Wait.
  • the method for modifying the PCC rule and the ADC rule/QoS parameter may include: activating or modifying a specified data stream by a PCRF (Policy and Charging Rules Function) entity (hereinafter referred to as a PCRF) Corresponding PCC rule/QoS parameters, or activated or modified by TDF (Taffic detection function) entity (hereinafter referred to as TDF), such as reducing the ADC rule (Application Detection and Control) corresponding to the specified data stream.
  • PCRF Policy and Charging Rules Function
  • TDF Taffic detection function
  • the current UL/DL maximum bit rate in the probe for example, reduces application services that are currently considered to occupy excessive network resources, such as P 2 P (peer-to-peer) services (such as Skype).
  • the specified data flow configured on the network side is usually an application service data flow that excessively occupies network resources, and the network side modifies the application service data flow.
  • the specified data flow configured on the network side is usually an application service data flow that excessively occupies network resources, and the network side modifies the application service data flow.
  • the network side modifies the application service data flow.
  • Corresponding PCC rule/QOS but with the diversification of application services, each business has a variety of impacts on the network, it is difficult to estimate the current network.
  • the congestion is caused by which application service data flow, so this method may not alleviate network congestion in a timely and effective manner.
  • Embodiments of the present invention provide a method for mitigating network congestion, a core network device, and an access network device, which solves the problem that network congestion cannot be alleviated in a timely and effective manner.
  • a method for mitigating network congestion including:
  • the core network device obtains congestion state information and a data flow identifier for indicating congestion of the access network, and reduces service quality QoS of the data flow corresponding to the data flow identifier according to the congestion state information.
  • the access network device determines a data flow that is congested by the access network
  • a core network device including:
  • a receiver configured to obtain congestion state information and a data flow identifier for indicating congestion of the access network
  • a processor configured to reduce a quality of service QoS of the data flow corresponding to the data flow identifier according to the congestion state information.
  • an access network device including:
  • a processor configured to determine a data flow used to indicate congestion of the access network
  • a transmitter configured to send, to the core network device, congestion state information and a data flow identifier for indicating congestion of the access network, so that the core network device reduces the data flow according to the congestion state information and the data flow identifier Quality of Service QoS.
  • a system for mitigating network congestion including:
  • the core network device and the access network device provided in the above content.
  • the method for mitigating network congestion and the core network device provided by the embodiments of the present invention adopt the foregoing solution
  • the access network device determines the data flow that causes the access network to be congested, it sends congestion state information and data flow identifiers for indicating the congestion of the access network to the core network device, and the core network device receives the congestion state information and data.
  • the QoS of the data flow corresponding to the data flow identifier is reduced according to the congestion state information, so as to alleviate network congestion.
  • FIG. 1 is a flowchart of a method for relieving network congestion according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of a method for relieving network congestion according to the embodiment
  • FIG. 3 is a schematic diagram of information transmission between a PCEF and a PCRF in the method shown in FIG. 2;
  • FIG. 4a is a schematic diagram of data transmission between an access network device and a core network device in the method shown in FIG. 2;
  • FIG. 4b is a schematic diagram of data transmission of an access network device and a core network device in the method shown in FIG. 2;
  • FIG. 5 is a flowchart of a method for mitigating network congestion according to the embodiment.
  • FIG. 6 is a schematic diagram of a method for sending a report indication message to an access network device according to an embodiment of the present invention
  • FIG. 7 is a flowchart of a method for relieving network congestion according to an embodiment of the present disclosure.
  • FIG. 8 is a flowchart of a method for relieving network congestion according to an embodiment of the present disclosure
  • FIG. 9 is a schematic flowchart of a method for alleviating network congestion according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a core network device according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of another core network device according to the embodiment.
  • FIG. 12 is a schematic structural diagram of an access network device according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of another access network device according to the embodiment.
  • FIG. 14 is a schematic structural diagram of a system for alleviating network congestion according to an embodiment of the present disclosure.
  • the network side solves the problem of network congestion by modifying the PCC rule/QoS parameter corresponding to the corresponding data stream.
  • it may not be able to effectively alleviate network congestion in a timely and effective manner.
  • the access network device first determines the data flow that causes the network to be congested, and then notifies the core network device of the data flow in a corresponding manner, so that the core network device determines the policy corresponding to the data flow that causes the network to be congested. And the charging control rule and/or the application detection control rule, so that the core network device modifies the corresponding data flow and the QoS parameter of the bearer according to the determined policy and charging control rule and/or the application detection control rule,
  • the bearer may be a bearer where the data flow causing network congestion is located.
  • the core network device may include, but is not limited to: a PCRF, a gateway device/PCEF (Poly cy and Charging Enforcement Funneling) entity (hereinafter referred to as a PCEF) MME (Mobi Li ty Management Entity, Mobility Management Network Element).
  • PCEF Policy cy and Charging Enforcement Funneling
  • MME Mobility Management Network Element
  • the embodiment provides a method for mitigating network congestion.
  • the executor of the method may be a core network device. As shown in FIG. 1, the method may include:
  • the core network device obtains congestion state information and a data flow identifier for indicating congestion of the access network.
  • the congested data stream may be a data stream that excessively occupies network resources, and specifically, which data stream may be determined by the access network device according to bandwidth resources occupied by various data streams.
  • some data streams occupy large bandwidth resources, and these data streams can be considered as data flows that cause network congestion.
  • How to define a large bandwidth resource which can be defined by the network according to the actual situation, for example, but not limited to, when a service flow occupies more than 50% of the bandwidth resources, the data flow can be considered as excessively occupying network resources.
  • the data stream is either referred to as the data stream that causes congestion.
  • the data flow that causes network congestion in the following full text is all this.
  • the access network device sends the congestion state information and the data flow identifier indicating the congestion of the access network to the core network device after determining the data flow that causes the access network to be congested, and the core network device receives the congestion state. After the information and the data flow are identified, the QoS of the data flow corresponding to the data flow identifier is reduced according to the congestion state information, so as to alleviate network congestion.
  • This embodiment provides another method for alleviating network congestion.
  • the method is a further extension of the method shown in FIG. 1.
  • the method may include:
  • the core network device acquires congestion state information and a data flow identifier for indicating congestion of the access network.
  • the access network device When network congestion occurs, the access network device sends congestion state information and data flow identifiers for indicating congestion of the access network to the core network device after determining the data stream that excessively occupies the network resources or causes the network to be congested.
  • congestion status information and the data flow identifier used by the core network device to indicate the congestion of the access network may include, but are not limited to:
  • the core network device receives the control plane signaling including the data flow identifier and the congestion state information, and the core network device obtains the data flow identifier and the congestion state information from the control plane signaling; or
  • the core network device receives the user plane data packet including the data flow identifier and the congestion state information; or the core network device receives the user plane data packet of the data flow that includes the congestion state information, and the core network device acquires the data flow identifier corresponding to the data flow, and Obtain congestion status information from the user plane packet.
  • the method for obtaining the congestion state information and the data flow identifier of the core network device is not limited in this embodiment, and may be set according to actual needs, and details are not described herein again.
  • the core network device determines whether there is a policy and charging control rule corresponding to the data flow identifier.
  • step 203 if it exists, go to step 203, if not, go to step 205.
  • the core network device may be a gateway device/PCEF.
  • the step may be: the gateway device/PCEF determines whether there is a policy and charging control rule corresponding to the data flow identifier and/or application detection. Control rules.
  • the step may be: determining whether the policy and the charging control rule corresponding to the data flow identifier exist; or When the network device reduces the QoS of the data flow corresponding to the data flow identifier in the application detection control rule, this step may be used to determine whether the application detection control rule corresponding to the data flow identifier exists; or when the core network device reduces the application detection control rule and policy.
  • this step may be used to determine whether there is an application detection control rule and a policy and charging control rule corresponding to the data flow identifier.
  • the method for determining the step 202 is not limited in this embodiment, and may be set according to actual needs, and details are not described herein again.
  • the core network device may, but is not limited to, reduce the QoS of the data flow corresponding to the data flow identifier by modifying the QoS parameters in the at least one rule.
  • the core network device may further reduce the QoS of the data flow corresponding to the data flow identifier by re-activating at least one rule and deleting the at least one rule, so that at least one rule after the reactivation is performed.
  • the QoS corresponding to the QoS parameter is lower than the QoS corresponding to the QoS parameter of the data stream before activation.
  • the policy and charging control rule are reduced.
  • the QoS of the data stream corresponding to the data stream identifier may include, but is not limited to, congested after the gateway device/PCEF receives the congestion state information and the data flow identifier and determines that the policy and the charging control rule corresponding to the data flow identifier exist.
  • the policy and charging control rules corresponding to the status information and the data flow identifier are sent to the PCRF, and the PCRF modifies the policy and the charging control rule corresponding to the data flow identifier according to the congestion state information, and the PCRF can include the policy and the charging control rule.
  • the QoS parameters are modified (ie, reduced QoS), for example, can be tampered with but not limited to QCI, ARP, MBR, GBR, and the like.
  • the PCRF may reactivate the policy and charging control rules corresponding to the data flow identifier according to the data flow identifier and the congestion state information.
  • 4a is a schematic diagram of data transmission between an access network device and a core network device (which may include: gateway device/PCEF, PCRF, etc.).
  • a core network device which may include: gateway device/PCEF, PCRF, etc.
  • reducing the QoS of the data flow corresponding to the data flow identifier in the application detection control rule may further include: if the PCRF determines that the application detection control rule corresponding to the data flow identifier exists, the PCRF may further The received data flow identifier sends the indication information to the TDF, where the indication information is used to indicate that the TDF modifies the application detection control rule corresponding to the data flow identifier.
  • the TDF can modify the QoS parameters in the ADC ru l e, for example, the maximum bit rate (UL/DL max imum b i t ra te ) in the ADC Ru l e can be reduced.
  • the indication information may be used to indicate that the TDF re-activates the application detection control rule corresponding to the data flow identifier and deletes the original application detection control rule, and the TDF sends an acknowledgement message to the PCRF, where the acknowledgement message may include, but is not limited to, after reactivation.
  • the application detection control rule is such that the QoS corresponding to the QoS parameter in the re-activated application detection control rule is lower than the QoS corresponding to the QoS parameter of the data stream before activation.
  • the ADC ru l e in Figure 4b is the application detection control rule.
  • the core network device can also reduce the QoS of the data flow corresponding to the data flow identifier in the policy and the charging control rule and the application detection control rule.
  • the specific implementation manner of the method is not described here.
  • the QoS parameters are not limited in this embodiment, and are well-known in the art, and can be set according to actual needs, and details are not described herein again.
  • the method for sending the congestion state information and the data stream identifier to the PCRF by the gateway device/PCEF is not limited, and is a technology well known to those skilled in the art, and can be set according to actual needs, for example, but not limited to PCEF direction.
  • the PCRF sends an IP-CAN (IP-Connec ti ty Acces s Network, IP ⁇ Internet Protoco l, Inter-Network Interconnection Protocol> connection access network) message containing the congestion status information and the data flow identifier, and details are not described herein.
  • the gateway device/PCEF determines that there is no policy and charging control rule corresponding to the data flow identifier and/or applies the detection control rule
  • the data flow identifier needs to be sent to the PCRF for PCRF.
  • the QoS corresponding to the QoS parameter in the at least one of the activated policy and the charging control rule is lower than the QoS corresponding to the QoS parameter of the data stream before the activation.
  • the activated policy and the charging control rule are sent to the gateway device/PCEF, so that the gateway device/PCEF receives the The policy and the charging control rule perform subsequent operations, for example, limiting the Q0S parameters of the current service flow, thereby reducing the bandwidth occupied by the bearer corresponding to the data flow.
  • the PCRF activation data flow identifier corresponding to the application detection control rule may include: after receiving the data flow identifier, the PCRF sends indication information to the TDF, where the indication information may be used to indicate the TDF activation data flow.
  • the corresponding application detection control rule is identified; the TDF will send an acknowledgement message to the PCRF, which may include, but is not limited to, an activated application detection control rule.
  • the application detection control rule may be sent to the TDF device, so that the TDF device performs subsequent operations according to the received application detection control rule, for example, modifying the Q0S parameter of the application service, for example, The maximum bit rate of the uplink and the downlink, etc., can further reduce the resources occupied by the data stream.
  • the method for the activation of the policy and the charging control rule of the PCRF, and the method for the application of the detection control rule by the TDF are not limited, and are well-known to those skilled in the art, and can be set according to actual needs. Narration.
  • the PCRF may send an IP-CAN message to the gateway device/PCEF, and the IP-CAN message may include, but is not limited to, modified or activated policy and charging control rules and modified or activated. After the application detects at least one rule in the control rule.
  • the method for sending at least one of the modified or activated policy and charging control rules and the modified or activated application detection control rules to the gateway device/PCEF is not limited, and may be set according to actual needs. , will not repeat them here.
  • the PCRF can send a Diame ter to the TDF device.
  • This embodiment is not limited to the method for modifying or determining the QoS parameters in the detection control rule by the TDF device, and is a technology well known to those skilled in the art, and details are not described herein again.
  • step 205 may be directly executed without performing the determining step of step 202.
  • the QoS of the data flow corresponding to the data flow identifier may be reduced: after the core network device obtains the congestion state information and the data flow identifier of the access network congestion, the policy corresponding to the data flow identifier is reactivated. And at least one of the charging control rule and the application detection control rule, and deleting the original policy and charging control rule and/or applying the detection control rule, wherein the activated policy and charging control rule and charging control rule.
  • the QoS corresponding to the QoS parameter in at least one of the rules of the application detection control rule is lower than the QoS corresponding to the QoS parameter of the data stream before activation.
  • step 206 is an optional step, and is not necessarily performed after step 205 during execution, and may be performed before or after any step of the embodiment, which is not limited herein.
  • the access network device sends the congestion state information and the data flow identifier indicating the congestion of the access network to the core network device after determining the data flow that causes the access network to be congested, and the core network device receives the congestion state. After the information and the data flow are identified, the QoS of the data flow corresponding to the data flow identifier is reduced according to the congestion state information, so as to alleviate network congestion.
  • the core network device may determine, according to the reporting indication message, whether to send the congestion state information and the data flow identifier to the core network device.
  • This embodiment provides another method for mitigating network congestion.
  • the method is mainly used to describe a process for determining, by the access network device, whether to send congestion state information and a data flow identifier to a core network device according to the report indication message, as shown in FIG. Can include:
  • the terminal sends an attach request to the access network device.
  • the access network device forwards the attach request to the E.
  • the MME sends an activation session request to the gateway device/PCEF according to the attach request.
  • the gateway device/PCEF sends an IP-CAN session establishment request to the PCRF.
  • the PCRF sends an IP-CAN session establishment response to the gateway device/PCEF.
  • the PCRF determines that the access network device reports the data flow information that causes congestion to the core network device when the access network is congested, the PCRF sends a report indication message to the gateway device/PCEF, that is, the report indication message is used to indicate the access network.
  • the access network device reports the congestion status information and the data flow identifier used to indicate the congestion of the access network to the core network device, and the report indication message may be included in the IP-CAN session establishment response and sent to the gateway device/PCEF.
  • the gateway device/PCEF sends an activation session response to the ⁇ E, where the response may include a reporting indication message.
  • the E sends an initial context setup request/attach accept message to the access network device, where the message may include a report indication message.
  • the ⁇ E may also send an indication message to the access network device by using other methods, which may include:
  • the terminal sends a service request to the access network device.
  • the access network device sends a service request to the MME
  • ⁇ E sends an initial context setup request to the access network device, in the initial context setup request. May include, but is not limited to, reporting an indication message;
  • the method for sending the report indication message to the access network device is not limited, and may be set according to actual needs, and details are not described herein again.
  • the access network sends an RRC (Radio Resource Control Protocol) connection reconfiguration process to the terminal.
  • RRC Radio Resource Control Protocol
  • This embodiment is not limited to the RRC connection reconfiguration method, the function of the attach request, and the function of the service request, and is not known to those skilled in the art.
  • the access network device sends the congestion state information and the data flow identifier indicating the congestion of the access network to the core network device after determining the data flow that causes the access network to be congested, and the core network device receives the congestion state. After the information and the data flow are identified, the QoS of the data flow corresponding to the data flow identifier is reduced according to the congestion state information, so as to alleviate network congestion.
  • the executor of the method may be an access network device. As shown in FIG. 7, the method may include:
  • the access network device determines a data flow used to indicate that the access network is congested.
  • the access network device sends the congestion state information and the data flow identifier indicating the congestion of the access network to the core network device after determining the data flow that causes the access network to be congested, and the core network device receives the congestion state. After the information and the data flow are identified, the QoS of the data flow corresponding to the data flow identifier is reduced according to the congestion state information, so as to alleviate network congestion.
  • This embodiment provides a method for alleviating network congestion.
  • the method is further extended to the method shown in FIG. 7.
  • the method may include:
  • the reporting indication message may be used to indicate that the access network device sends the congestion state information and the data flow identifier to the core network device. This step is optional. 802.
  • the access network device determines a data flow used to indicate congestion of the access network.
  • the access network device determines that the data flow that causes the network to be congested may include:
  • the access network device can learn the packet filter information corresponding to the data stream that currently over-occupies the network resource (that is, causes network congestion), that is, the data.
  • DPI Deep Packet Inspection
  • the packet filter information and the service identifier are both referred to as data stream identifiers.
  • the method for obtaining the packet filter information and the service identifier of the access network device is not limited in this embodiment, and is a technology well known to those skilled in the art, and details are not described herein again.
  • the method for determining the data flow that causes the network to be congested by the access network device is not limited, and may be set according to actual needs, and details are not described herein again.
  • the sending the access network congestion information to the core network device may be: sending a user plane data packet of the data flow including the congestion state information to the core network device, so that the core network device acquires the data flow identifier corresponding to the data flow, and the user Obtaining congestion status information in the face packet;
  • control plane signaling that includes the data flow identifier and the congestion state information, so that the core network device obtains the data flow identifier and the congestion state information from the control plane signaling; further, as shown in FIG.
  • the network access device can send control plane signaling including congestion status information to ⁇ E, It is then sent by the MME to the gateway device/PCEF, or a third party device.
  • the sending the access network congestion information to the core network device may be: when there is no uplink data packet between the access network device and the core network device, the access network device cannot send the data including the congestion state information to the core network device.
  • the packet may also include the congestion status information in the header of the uplink data packet and be sent to the core network device, but the uplink data packet is an uplink data packet of the other terminal that is configured by the current gateway device and includes the uplink data packet.
  • the uplink data packet may further include an identifier of the terminal.
  • the third-party device is not limited, and may be configured according to actual needs.
  • it may be, but is not limited to, a network management device, a detection network device, and the like, and details are not described herein again.
  • the access network device sends the congestion state information and the data flow identifier indicating the congestion of the access network to the core network device after determining the data flow that causes the access network to be congested, and the core network device receives the congestion state. After the information and the data flow are identified, the QoS of the data flow corresponding to the data flow identifier is reduced according to the congestion state information, so as to alleviate network congestion.
  • This embodiment provides a core network device, as shown in FIG. 10, which may include:
  • the receiver 101 is configured to acquire congestion state information and a data flow identifier for indicating congestion of the access network.
  • the processor 102 is configured to reduce the quality of service QoS of the data stream corresponding to the data flow identifier according to the congestion state information.
  • the access network device After the foregoing solution is adopted, after determining the data flow that causes the access network to be congested, the access network device sends, to the receiver, congestion state information and a data flow identifier for indicating congestion of the access network, and the processor receives the congestion state at the receiver. After the information and the data flow are identified, the QoS of the data flow corresponding to the data flow identifier is reduced according to the congestion state information, so as to alleviate network congestion.
  • This embodiment provides another core network device, which is a further extension of the core network device shown in FIG. 10, as shown in FIG.
  • the receiver 111 is configured to acquire congestion state information and a data flow indicator for indicating congestion of the access network.
  • the processor 112 is configured to reduce the quality of service QoS of the data stream corresponding to the data flow identifier according to the congestion state information.
  • the transmitter 113 is configured to send a report indication message to the access network device, where the report indication message is used to indicate that the access network device sends the congestion state information and the data flow identifier to the core network device.
  • the processor 112 is configured to obtain at least one of an existing policy and charging control rule and an application detection control rule corresponding to the data flow identifier, and modify the QoS parameter in the at least one rule to modify the QoS.
  • the QoS corresponding to the parameter is lower than the QoS corresponding to the QoS parameter of the data stream before modification.
  • the processor 112 is configured to activate at least one of a policy and a charging control rule and an application detection control rule corresponding to the data flow identifier, where the QoS corresponding to the QoS parameter in the at least one rule is lower than that before the activation.
  • the QoS corresponding to the QoS parameters of the data stream is configured to activate at least one of a policy and a charging control rule and an application detection control rule corresponding to the data flow identifier, where the QoS corresponding to the QoS parameter in the at least one rule is lower than that before the activation.
  • the QoS corresponding to the QoS parameters of the data stream is configured to activate at least one of a policy and a charging control rule and an application detection control rule corresponding to the data flow identifier, where the QoS corresponding to the QoS parameter in the at least one rule is lower than that before the activation.
  • the QoS corresponding to the QoS parameters of the data stream is configured to activate at least one of a policy and
  • the receiver 111 is configured to receive control plane signaling that includes the data flow identifier and the congestion state information, and obtain the data flow identifier and the congestion state information from the control plane signaling; or
  • the receiver 111 may be, but not limited to, a gateway device/PCEF, or a third-party device, or a device E; the processor 112 may be, but not limited to, a policy and charging control function entity; 113 may be, but is not limited to, ⁇ E, or a third party device.
  • the access network device After the foregoing solution is adopted, after determining the data flow that causes the access network to be congested, the access network device sends, to the receiver, congestion state information and a data flow identifier for indicating congestion of the access network, and the processor receives the congestion state at the receiver. After the information and the data flow are identified, the QoS of the data flow corresponding to the data flow identifier is reduced according to the congestion state information, so as to alleviate network congestion.
  • the embodiment provides an access network device, as shown in FIG. 12, which may include:
  • the processor 121 is configured to determine a data flow used to indicate that the access network is congested
  • the transmitter 122 is configured to send, to the core network device, congestion state information used to indicate congestion of the access network. And the data flow identifier, so that the core network device reduces the quality of service QoS of the data flow according to the congestion state information and the data flow identifier.
  • the access network device After the foregoing solution is adopted, after determining the data flow that causes the access network to be congested, the access network device sends, to the receiver, congestion state information and a data flow identifier for indicating congestion of the access network, and the processor receives the congestion state at the receiver. After the information and the data flow are identified, the QoS of the data flow corresponding to the data flow identifier is reduced according to the congestion state information, so as to alleviate network congestion.
  • the present embodiment provides an access network device, which is a further extension of the access network device shown in FIG. 12, as shown in FIG.
  • the processor 1 31 is configured to determine a data flow used to indicate congestion of the access network.
  • the transmitter 1 32 is configured to send, to the core network device, congestion state information and a data flow identifier for indicating congestion of the access network, so that the core network device reduces the quality of service QoS of the data flow according to the congestion state information and the data flow identifier.
  • the receiver 1 33 is configured to receive a report indication message sent by the core network device, where the report indication message is used to instruct the access network device to send the congestion state information and the data flow identifier to the core network device.
  • the sender 1 31 is configured to send a user plane data packet of the data flow including the congestion state information to the core network device, so that the core network device acquires the data flow identifier corresponding to the data flow, and obtains the congestion from the user plane data packet.
  • Status information or,
  • the control plane signaling is configured to send the data flow identifier and the congestion state information to the core network device, so that the core network device obtains the data flow identifier and the congestion state information from the control plane signaling; or is configured to send the information to the core network device.
  • User plane packet for data flow identification and congestion status information.
  • the transmitter sends the congestion state information and the data flow identifier for indicating the congestion of the access network to the core network device, and the core network device receives the congestion state.
  • the QoS of the data flow corresponding to the data flow identifier is reduced according to the congestion state information, so as to alleviate network congestion.
  • the embodiment provides a system for mitigating network congestion.
  • the core network device 141 and the access network device 142 provided in the foregoing device embodiments may be included.
  • the implementations of the core network device 141 and the access network device 142 are the same as those of the core network device and the access network device provided in this embodiment, and are not described here.
  • the access network device sends the congestion state information and the data flow identifier indicating the congestion of the access network to the core network device after determining the data flow that causes the access network to be congested, and the core network device receives the congestion state. After the information and the data flow are identified, the QoS of the data flow corresponding to the data flow identifier is reduced according to the congestion state information, so as to alleviate network congestion.
  • the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. .
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer.
  • a hard disk or optical disk or the like includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un procédé permettant de désencombrer un réseau, un dispositif de réseau central et un dispositif de réseau d'accès. La présente invention s'applique au domaine technique des communications. Le problème lié à l'impossibilité de désencombrer immédiatement et efficacement un réseau est résolu. Ledit procédé peut comprendre en particulier : l'acquisition par un dispositif de réseau central d'informations sur l'état d'encombrement et d'une identification de flux de données servant à indiquer l'encombrement d'un réseau d'accès; et la diminution de la qualité de service (QoS) d'un flux de données correspondant à l'identification de flux de données en fonction des informations sur l'état d'encombrement. Ce procédé permet de désencombrer un réseau.
PCT/CN2012/083777 2012-10-30 2012-10-30 Procédé permettant de désencombrer un réseau, dispositif de réseau central et dispositif de réseau d'accès WO2014067075A1 (fr)

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PCT/CN2012/083777 WO2014067075A1 (fr) 2012-10-30 2012-10-30 Procédé permettant de désencombrer un réseau, dispositif de réseau central et dispositif de réseau d'accès
CN201280001693.5A CN103907323A (zh) 2012-10-30 2012-10-30 缓解网络拥塞的方法、核心网设备和接入网设备

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EP3266188B1 (fr) * 2015-03-02 2020-09-02 Convida Wireless, LLC Gestion de réseaux et d'applications à l'aide de fonctions de couche de services
CN107493238A (zh) * 2016-06-13 2017-12-19 华为技术有限公司 一种网络拥塞控制方法、设备及系统
CN108347746B (zh) * 2017-01-23 2024-05-03 中兴通讯股份有限公司 接入控制方法、接入网网元及用户设备
EP3972209A4 (fr) 2019-07-24 2022-07-06 Huawei Technologies Co., Ltd. Procédé de traitement d'encombrement de réseau, et appareil associé

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