WO2019228214A1 - Procédé et appareil pour établir une porteuse radio et surveiller un flux de services - Google Patents

Procédé et appareil pour établir une porteuse radio et surveiller un flux de services Download PDF

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Publication number
WO2019228214A1
WO2019228214A1 PCT/CN2019/087679 CN2019087679W WO2019228214A1 WO 2019228214 A1 WO2019228214 A1 WO 2019228214A1 CN 2019087679 W CN2019087679 W CN 2019087679W WO 2019228214 A1 WO2019228214 A1 WO 2019228214A1
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WIPO (PCT)
Prior art keywords
network element
information
qos policy
service flow
radio bearer
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PCT/CN2019/087679
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English (en)
Chinese (zh)
Inventor
王毓芳
王祝琳
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华为技术有限公司
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Publication of WO2019228214A1 publication Critical patent/WO2019228214A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a method and a device for establishing a radio bearer and monitoring a service flow.
  • QoS quality of service
  • service QoS is guaranteed by terminal equipment, (radio) access network ((radio) access network ((R) AN)), and user plane functions (user plane) function (UPF).
  • a data packet corresponding to a service constitutes a service flow of the service, and a QoS policy is performed based on the service flow. Therefore, in a 5G system, a service flow may also be referred to as a QoS flow.
  • the QoS flow will be described as an example.
  • the QoS policy is sent to the UPF network element and the AMF network element, and then sent by the AMF network element to the (R) AN network.
  • the (R) AN network element then sends the QoS policy to the terminal device.
  • SMF session management function
  • the (R) AN network element After the (R) AN network element receives the QoS policy, it will immediately allocate wireless resources to the QoS flow, thereby establishing a corresponding radio bearer between the (R) AN network element and the terminal device, and the UPF network element receives the QoS After the policy, policies such as charging and bandwidth control are performed on the QoS flow according to the QoS policy, so as to ensure the delay and bandwidth requirements of the QoS flow.
  • the embodiments of the present application provide a method and a device for establishing a radio bearer and monitoring a service flow, which are used to reduce waste of wireless resources.
  • a method for establishing a radio bearer includes: a network element of an access network first obtains a QoS policy for a service flow, and then receives first information indicating that the QoS policy has taken effect or is about to take effect. According to the QoS policy, a radio bearer is established for the service flow.
  • the access network element will establish a radio bearer based on the received QoS policy only when it receives an indication that the received QoS policy is in the effective mode or is about to take effect; otherwise, it will not QoS policies establish radio bearers, so that radio bearers can be selectively established according to the actual situation, and waste of wireless resources can be reduced.
  • the access network element determines that the service is not received through the radio bearer within a preset time period The flow of data packets releases the resources corresponding to the radio bearer.
  • the network element of the access network can release the resources corresponding to the radio bearer in time according to the transmission conditions of the data packets in the radio bearer, which can improve the utilization rate of the radio resources.
  • the first information is a data packet of the service flow, and the first information is used to indicate that the QoS policy has taken effect.
  • the network element of the access network when the network element of the access network receives the data packet of the service flow, it is determined that the QoS policy has taken effect, so that the network element of the access network can trigger the establishment of a wireless bearer according to the data packet of the service flow.
  • the access network element receives the Second information indicating a delay in establishing a radio bearer for the service flow.
  • the network element of the access network may first receive the second information of delay in establishing a radio bearer for the service flow, so that the network element of the access network does not immediately establish a radio bearer for the service flow after receiving the QoS policy. Then after receiving the first information indicating that the QoS policy has taken effect, the corresponding radio bearer will be established according to the QoS policy.
  • an embodiment of the present application provides a method for establishing a radio bearer.
  • the method includes: a session management function network element first obtains a quality of service QoS policy for a service flow, and then receives a message indicating that the QoS policy is effective or is about to take effect When the first information is sent, a QoS policy for the access network element to establish a wireless bearer for the service flow is sent to the access network element.
  • the session management network element sends the QoS policy to the access network element only when it receives the indication that the received QoS policy is in an effective mode or an upcoming effective mode, thereby enabling the access network element
  • the wireless bearer corresponding to the service flow is established according to the received QoS policy, otherwise, the QoS policy will not be sent to the network element of the access network, so that the wireless bearer can be selectively established according to the actual situation, which can reduce the waste of wireless resources .
  • the session management function network element after the session management function network element sends the QoS policy to the access network network element, the session management function network element receives from the user plane function UPF network element for indicating that the When the third information of the data packet of the service flow is detected, the session management function network element sends fourth information to the access network element to instruct the access network element to release the radio bearer.
  • the session management function network element can release the resources corresponding to the radio bearer in time according to the detection result of the transmission status of the data packet in the radio bearer by the user plane function network element, which can improve the utilization rate of the radio resources.
  • the session management function network element receives It is used to indicate the delay in establishing a radio bearer second information for the service flow.
  • the session management function network element may first receive the second information that delays establishing a radio bearer for the service flow, so that the session management function network element does not immediately send the QoS policy to the access after receiving the QoS policy.
  • Network element so the access network element will not immediately establish a wireless bearer for the service flow, and then the session management function network element will only receive the QoS policy after receiving the first information indicating that the QoS policy has taken effect Sent to the access network element, so the access network element establishes a corresponding radio bearer according to the QoS policy.
  • the first information when the first information indicates that the user plane function network element detects a data packet of the service flow, the first information is used to indicate that the QoS policy has taken effect.
  • the session management function network element when the session management function network element receives the first information indicating that the user plane function network element detects a data packet of the service flow, it determines that the QoS policy has taken effect, thereby sending the QoS policy to An access network element, so that the access network element establishes a radio bearer according to the QoS policy.
  • an embodiment of the present application provides a method for monitoring a service flow.
  • the method includes: after receiving a second piece of information from a session management function network element for instructing to delay establishing a wireless bearer for a service flow, the user plane function network element , It is monitored whether there is a data packet of the service flow, and when the data packet of the service flow is detected, first information is sent to the session management function network element to indicate that the quality of service QoS policy of the service flow has taken effect, In this way, the session management function network element establishes a radio bearer for the service flow through the QoS policy.
  • the user plane function network element when the user plane function network element detects a data packet of the service flow, it indicates to the session management function network element that the QoS policy has taken effect. In this way, the session management function network element will send according to the QoS policy. Give the access network element to enable the access network element to establish a wireless bearer corresponding to the service flow, so that the wireless bearer can be selectively established according to the transmission of data packets of the service flow, which can reduce the waste of wireless resources.
  • the user plane function network element After the user plane function network element sends the first information to the session management function network element, the user plane function network element determines that a data packet of the service flow is not detected within a preset period of time, Sending third information to the session management function network element to indicate that a data packet of the service flow is not detected within the preset time period.
  • the user plane function network element can report the transmission status of the data packet in the radio bearer to the session management function network element, so that the session management function network element can timely release the data packet with the wireless network according to the transmission status of the data packet. Carrying corresponding resources can improve the utilization of wireless resources.
  • an embodiment of the present application provides a device, which may be an access network network element or a device in an access network network element.
  • the device may include an obtaining unit and a processing unit, and these modules may execute the foregoing.
  • the obtaining unit is configured to obtain a quality of service QoS policy of the service flow and first information, where the first information is used to indicate that the QoS policy has taken effect or is about to take effect.
  • a processing unit configured to establish a radio bearer for the service flow according to the QoS policy when receiving the first information.
  • the processing unit is further configured to: determine that a data packet of the service flow is not received through the radio bearer within a preset period of time, and then release resources corresponding to the radio bearer.
  • the first information is a data packet of the service flow, and the first information is used to indicate that the QoS policy has taken effect.
  • the obtaining unit is further configured to: receive the second information
  • the second information is used to indicate delay in establishing a radio bearer for the service flow.
  • an embodiment of the present application provides a device, which may be a session management function network element or a device in a session management function network element.
  • the device may include an obtaining unit and a processing unit, and these modules may execute the foregoing.
  • an obtaining unit is configured to obtain a quality of service QoS policy of a service flow and first information used to indicate that the QoS policy has taken effect or is about to take effect;
  • a processing unit Configured to control the communication interface to send the QoS policy to an access network element when the first information is received, where the QoS policy is used by the access network element to establish a radio bearer for the service flow .
  • the obtaining unit is further configured to receive third information from a user plane function UPF network element.
  • the three pieces of information are used to indicate that a data packet of the service flow is not detected within a preset time period; and fourth information is sent to the access network element, and the fourth information is used to instruct the access network element to release The radio bearer.
  • the obtaining unit is further configured to: receive the second information, The second information is used to indicate a delay in establishing a radio bearer for the service flow.
  • the first information when the first information is a data packet of the service flow, the first information is used to indicate that the QoS policy has taken effect.
  • an embodiment of the present application provides a device.
  • the device may be a user plane function network element or a device in a user plane function network element.
  • the device may include an obtaining unit and a processing unit. These modules may execute the foregoing.
  • the obtaining unit is configured to receive second information from the session management function SMF network element, the second information is used to indicate a delay in establishing a radio bearer for a service flow; processing A unit is used to monitor the service flow, and when a data packet of the service flow is detected, control the communication interface to send first information to the SMF network element, where the first information is used to indicate the service flow.
  • the quality of service QoS policy has taken effect, and the QoS policy is used to establish a radio bearer for the service flow.
  • the processing unit after controlling the communication interface to send the first information to the SMF network element, is further configured to determine that a data packet of the service flow is not detected within a preset duration. Controlling the communication interface to send third information to the SMF network element, where the third information is used to indicate that a data packet of the service flow is not detected within the preset duration.
  • an embodiment of the present application provides an apparatus, where the apparatus includes a processor, and is configured to implement the method described in the first aspect.
  • the apparatus may further include a memory for storing program instructions and data.
  • the memory is coupled to the processor, and the processor may call and execute program instructions stored in the memory to implement the method described in the first aspect.
  • the apparatus may further include a communication interface for the apparatus to communicate with other devices.
  • the other device is a session management function network element.
  • the device includes: a communication interface for acquiring a quality of service QoS policy of the service flow and first information, the first information used to indicate that the QoS policy has taken effect or is about to take effect; a memory, A processor is configured to store program instructions; a processor is configured to execute the program instructions stored in the memory, and upon receiving the first information, establish a radio bearer for the service flow according to the QoS policy.
  • the processor is further configured to: determine that a data packet of the service flow is not received through the radio bearer within a preset time period, and then release resources corresponding to the radio bearer.
  • the first information is a data packet of the service flow, and the first information is used to indicate that the QoS policy has taken effect.
  • the communication interface is further configured to: receive the second information, The second information is used to indicate a delay in establishing a radio bearer for the service flow.
  • an embodiment of the present application provides an apparatus including a processor, configured to implement the method described in the second aspect.
  • the apparatus may further include a memory for storing program instructions and data.
  • the memory is coupled to the processor, and the processor may call and execute program instructions stored in the memory to implement the method described in the second aspect above.
  • the apparatus may further include a communication interface for the apparatus to communicate with other devices.
  • the other device is a user plane function network element or an access network network element.
  • the communication interface is further configured to receive third information from a user plane function UPF network element, and the first The three pieces of information are used to indicate that a data packet of the service flow is not detected within a preset time period; and fourth information is sent to the access network element, and the fourth information is used to instruct the access network element to release The radio bearer.
  • the communication interface is further configured to receive the second information after obtaining the QoS policy and before obtaining the first information.
  • the second information is used to indicate a delay in establishing a radio bearer for the service flow.
  • the first information when the first information is a data packet of the service flow, the first information is used to indicate that the QoS policy has taken effect.
  • an embodiment of the present application provides an apparatus, where the apparatus includes a processor, and is configured to implement the method described in the third aspect.
  • the apparatus may further include a memory for storing program instructions and data.
  • the memory is coupled to the processor, and the processor may call and execute program instructions stored in the memory to implement the method described in the third aspect.
  • the apparatus may further include a communication interface for the apparatus to communicate with other devices.
  • the other device is a session management function network element.
  • the processor after controlling the communication interface to send the first information to the session management function network element, the processor is further configured to determine that the service flow is not detected within a preset time period. A data packet; controlling the communication interface to send third information to the session management function network element, where the third information is used to indicate that a data packet of the service flow is not detected within the preset duration.
  • an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, where the computer program includes program instructions, and when the program instructions are executed by a computer, the program instructions The computer executes the method described in any one of the first aspect, or the second aspect, or the third aspect.
  • an embodiment of the present application provides a computer program product.
  • the computer program product stores a computer program, where the computer program includes program instructions, and when the program instructions are executed by a computer, the computer executes a first program.
  • the present application provides a chip system, which includes a processor and may further include a memory, for implementing the method described in the first aspect, or the second aspect, or the third aspect.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the present application provides a system including the fourth aspect, or the fifth aspect, or the sixth aspect, or the seventh aspect, or the eighth aspect, or the ninth aspect Aspect of the device.
  • FIG. 1 is a structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 3 is a flowchart of a method for establishing a radio bearer according to an embodiment of the present application
  • FIG. 4 is a flowchart of a method for establishing a radio bearer according to another embodiment of the present application.
  • FIG. 5 is a flowchart of a method for establishing a radio bearer according to another embodiment of the present application.
  • FIG. 6 is a flowchart of a method for establishing a radio bearer according to another embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a device according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a device according to another embodiment of the present application.
  • NR system Long Term Evolution system
  • LTE-A advanced long term evolution
  • 3GPP 3rd Generation Partnership Project project
  • the communication system may also be applicable to future-oriented communication technologies.
  • the system described in the embodiments of the present application is to more clearly illustrate the technical solutions of the embodiments of the present application, and does not constitute a technical solution provided by the embodiments of the present application. It is known to those skilled in the art that as the network architecture evolves, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • FIG. 1 is a structural diagram of a communication system according to an embodiment of the present application.
  • the technical solution in the embodiment of the present application is applicable to a scenario in which the QoS flow is guaranteed in the communication system.
  • the functions of each network element in the communication system shown in FIG. 1 are described so as to facilitate understanding by those skilled in the art.
  • NEF Network capability open function
  • PCF policy control function
  • Application function (AF) network element is connected to the PCF network element through the N5 interface to provide third-party service requirements to the PCF network element, so that the PCF network element generates a corresponding QoS policy according to the service requirement .
  • the PCF network element is connected to the SMF network element through the N7 interface, and is connected to the access and mobility management function (AMF) network element through the N15 interface to store or generate rules related to session management.
  • AMF access and mobility management function
  • the session QoS policy is provided to the SMF network element, and is also used to generate mobility management-related policy information and provide it to the AMF network element.
  • the SMF network element is connected to the AMF network element through the N11 interface. It is used to manage all control plane functions of the terminal device, including UPF entity selection, network protocol (IP) address allocation, and session QoS attribute management.
  • the PCF network element obtains policy control and charging (PCC) rules, and allocates session resources to the user plane.
  • PCC policy control and charging
  • AMF network element used to complete terminal device authentication, terminal device mobility management, network slice selection, SMF network element selection and other functions; as an anchor point for N1 and N2 signaling connections and provide for SMF network elements Routing of N1 and N2 session management (SM) messages; maintaining and managing state information of terminal equipment.
  • SM session management
  • Unified data management (UDM) network element which is connected to the AMF network element through the N8 interface, SMF network element through the N10 interface, and authentication service function (AUSF) through the N13 interface )
  • Network element connection which is used to store the contract information of the terminal device, and provide the contract-related parameter information for these corresponding network elements through the N8, N10, and N13 interfaces, respectively.
  • the AUSF network element is connected to the AMF network element through the N12 interface and is used to obtain a security authentication vector, which is used to perform security authentication between the terminal device and the network side.
  • the user plane function (UPF) network element is connected to the SMF network element through the N4 interface.
  • the UPF network element is used as the anchor point of the protocol data unit (PDU) session connection and is responsible for the terminal equipment. Data packet filtering, data transmission or forwarding, rate control, and generation of billing information. It should be noted that two UPF network elements communicate through an N9 interface.
  • a data network (DN) network element is connected to the UPF network element through an N6 interface, and is used to generate downlink data to be sent to the terminal device and to receive uplink data sent by the terminal device.
  • (10) (R) AN network element is connected to the UPF network element through the user plane interface N3 and is used to transmit data of the terminal equipment; (R) AN network element establishes a control plane signaling connection with the AMF network element through the control plane interface N2 , Used to implement wireless access bearer control and other functions.
  • the (R) AN network element may be an access network using different access technologies, for example, 3GPP access technology or non-3rd generation partnership project (non-3GPP) access technology.
  • the access network element will allocate appropriate resources for the user plane transmission channel according to the QoS rules provided by the SMF entity.
  • the (R) AN network element can also be called an access network network element.
  • a base station can be a gNB (gNodeB) in a new radio (NR) system, and a long term evolution (LTE) system.
  • the evolving base station evolutional NodeB, eNB, or eNodeB
  • the base station can be a distributed network unit, a transmission point (TRP) or a transmission point (TP), or a cloud radio access network (CRAN).
  • TRP transmission point
  • TP transmission point
  • CRAN cloud radio access network
  • the wireless controller in the scenario may be a relay station, an access point, an in-vehicle device, a wearable device, and an access network device in a future evolved public land mobile network (PLMN) or any other wireless access Equipment, but the embodiment of the present application is not limited to this.
  • PLMN public land mobile network
  • the terminal device may be a wireless terminal device or a wired terminal device.
  • a terminal device can communicate with one or more core networks via the RAN.
  • the terminal device can be a mobile terminal device, such as a mobile phone (also called a "cellular" phone) and a computer with a mobile terminal device.
  • a mobile terminal device such as a mobile phone (also called a "cellular" phone) and a computer with a mobile terminal device.
  • a mobile phone also called a "cellular" phone
  • PCS personal communication service
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the wireless terminal may also be called a system, a subscriber unit (SU), a subscriber station (SS), a mobile station (MB), a mobile station (mobile), a remote station (RS), Access point (AP), remote terminal (RT), access terminal (AT), user terminal (UT), user agent (UA), terminal device ( user device (UD), or user equipment (UE).
  • SU subscriber unit
  • SS subscriber station
  • MB mobile station
  • RS remote station
  • RT remote terminal
  • AT access terminal
  • UT user terminal
  • U terminal device
  • UE user equipment
  • QoS policy including QoS flow ID (QFI), data packet filter (packet filter), QoS profile (QoS profile), and QoS characteristics (QoS characteristics).
  • QFI QoS flow ID
  • data packet filter packet filter
  • QoS profile QoS profile
  • QoS characteristics QoS characteristics
  • Service data occurrence indicates that the data sender, for example, a terminal device or a DN network element, sends the first data packet belonging to the service to the data receiver.
  • each network element shown in this article may be a physical concept, for example, it may be a single device physically, or at least two network elements may be integrated on the same physical device, or A network element can also be a logical concept, such as a software module or a network function corresponding to the services provided by each network element.
  • the network function can be understood as a virtualization function under virtualization implementation, and can also be understood as being provided under a serviced network.
  • the network function of the service for example, a network function specifically used to allocate PDU session resources to the user plane, or a network function specifically used to provide a QoS policy to the terminal device, is not specifically limited in this embodiment of the present application.
  • the SMF network element obtains a QoS policy corresponding to the QoS flow from the PCF network element.
  • the QoS policy may be actively requested by the SMF network element to the PCF network element, for example, scenario 1 in FIG. 1, and the SMF network element receives a protocol data unit session (PDU) sent by the terminal device.
  • PDU protocol data unit session
  • the SMF network element sends information to the PCF to request the corresponding QoS policy.
  • the PCF network element obtains the terminal from a unified data repository (UDR).
  • the device's static subscription information generates a QoS policy based on the static subscription information, and then sends the QoS policy to the SMF network element.
  • the QoS policy may also be actively sent by the PCF network element, such as Scenario 2 in FIG.
  • the PCF network element receives the information sent by the AF network element for requesting QoS guarantee for a certain QoS flow, or in FIG. 1 Scenario 3.
  • the PCF network element receives the information sent by the NEF network element for requesting QoS improvement for a certain QoS flow.
  • the PCF network element converts the information sent by the AF network element or the NEF network element into a corresponding one. And then send the QoS policy to the SMF network element.
  • the PCF network element can send the QoS policy to the SMF through a predefined rule method or a dynamic rule method.
  • the SMF network element For sending QoS policies by using predefined rules, the SMF network element is pre-configured with multiple predefined rules.
  • the PCF network element only needs to send the index number of the predefined rule corresponding to the QoS policy, such as the rule name, to the The SMF network element is sufficient.
  • the PCF network element needs to send specific information of the QoS policy to the SMF network element.
  • the SMF network element sends the QoS policy to the UPF network element.
  • the SMF network element processes the QoS policy sent by the PCF network element before sending it to the UPF network element, the (R) AN network element, and the terminal device.
  • the QoS policies of the SMF network element to the UPF network element, the (R) AN network element, and the terminal device may be different from each other, or may be different from the QoS policies received by the SMF network element from the PCF network element.
  • Some information sent by the SMF network element to the UPF may not be provided by the PCF network element, such as QFI.
  • QFI is generated by the SMF network element based on the QoS policy received from the PCF network element, and then the SMF network element sends the QFI to the UPF.
  • the SMF network element does not send all the information in the QoS policy to the UPF network element, the (R) AN network element, and the terminal device.
  • the SMF network element does not retain the allocation priority contained in the QoS policy. retention (priority, ARP) is provided to the UPF network element, and the SMF network element does not send the flow description information contained in the QoS policy to the (R) AN and the like. Therefore, after the SMF network element obtains the QoS policy, the content in the QoS policy that needs to be sent to the UPF network element is sent to the UPF network element, and the specific content is not limited herein.
  • the UPF network element receives the QoS policy sent by the SMF network element, and the UPF network element stores the received QoS policy and uses the received QoS policy to perform control policies such as charging and bandwidth control on the QoS flow.
  • the SMF network element sends the QFI and QoS profile and other QoS policies to the (R) AN network element through the AMF network element.
  • the (R) AN network element After receiving the QoS policy, allocates wireless resources and channels for QoS flows according to QFI, QoS profile, and other information, and realizes the mapping of QFI to wireless resources, and then establishes corresponding radio bearers with the terminal equipment.
  • the SMF network element sends QFI and QoS rules such as QoS rules to the terminal device through the AMF network element / (R) AN network element.
  • the terminal device After receiving the QoS policy, the terminal device implements the mapping of service data flow to QFI and the mapping of QFI to wireless resources based on QFI, packet filters, QoS rules, and other information, and then establishes a corresponding relationship with the (R) AN network element.
  • Wireless bearer After receiving the QoS policy, the terminal device implements the mapping of service data flow to QFI and the mapping of QFI to wireless resources based on QFI, packet filters, QoS rules, and other information, and then establishes a corresponding relationship with the (R) AN network element.
  • Wireless bearer Wireless bearer.
  • the UPF network element, the (R) AN network element, and the terminal device will immediately perform corresponding QoS guarantee according to the QoS policy.
  • the (R) AN network element side when After the (R) AN network element receives the QoS policy, it immediately allocates radio resources to the QoS flow and establishes a radio bearer according to the QoS policy. If there is no service data transmission in the QoS flow, the wireless resource is reserved for the QoS flow. Until the (R) AN network element receives the instruction for recovering the wireless resource sent by the control plane, and then recovers the wireless resource according to the instruction.
  • the SMF network element requests the PCF network element to obtain the QoS policy, and sent the QoS policy to UPF network element, (R) AN network element and terminal equipment, and the timing of terminal equipment sending PDU session request to SMF network element may be when the terminal equipment first accesses the core network, When a terminal device accesses the core network for the first time, the terminal device may not have started to use the service. Therefore, the actual service data may not be generated immediately, so the (R) AN network element allocates the wireless resources for the QoS flow according to the QoS policy. There will be no service data transmission in the time period before the terminal equipment starts to use the service, causing waste of wireless resources.
  • embodiments of the present application provide a method for establishing a radio bearer to reduce waste of radio resources.
  • FIG. 3 is a flowchart of a method for establishing a radio bearer according to an embodiment of the present application.
  • the description of the flowchart is as follows:
  • Step 301 The terminal device sends a PDU session establishment request to the SMF network element, and the SMF network element receives the PDU session establishment request.
  • the SMF network element since there are multiple terminal devices interacting with the SMF network element, for convenience of description, one of the terminal devices will be described as an example in the following.
  • Step 302 The SMF network element sends a QoS policy request corresponding to the PDU session to the PCF network element, and the PCF network element receives the QoS policy request.
  • a PDU session includes a default QoS flow and zero to multiple non-guaranteed bit rate quality-of-service flows (Non-guaranteed BitRate QoS flow, non-GBR Qos flow) or guarantees.
  • Bit rate quality of service flow (Guaranteed Bit Rate QoS flow, GBR QoS flow). All service flows that do not specify a QoS policy or service flows with the same QoS policy as the default QoS flow are transmitted on the default QoS flow.
  • the service control policy may include a specific service such as charging and QoS policy.
  • the SMF network element determines whether to establish a QoS flow for the service according to the obtained service QoS policy. If the QoS policy of the service is different from the default QoS flow, the SMF network element needs to create a new QoS flow to provide QoS guarantee for the service.
  • a QoS flow At least one service flow having the same QoS policy is referred to as a QoS flow.
  • (R) AN network elements need to establish wireless bearers for both non-GBR QoS flows and GBR QoS flows, but (R) AN network elements also need to reserve additional bandwidth resources for GBR QoS flows, so the (R) AN network is properly managed
  • the radio bearer of the GBR QoS flow on the yuan is more meaningful for reducing the wireless resources.
  • the GBR QoS flow will be used as an example for illustration.
  • QFI is used to identify a QoS flow.
  • QFI is unique within a PDU session. Multiple different PDU sessions may have the same QFI.
  • QoS flows with the same QFI are in the (R) AN network element or UPF network. Stream forwarding processing on the element is the same.
  • Step 303 The PCF network element obtains the static contract data of the terminal device 1 from the UDR network element.
  • the static contract data is service-related data contracted by the terminal device.
  • the static contract data may be service package data when the terminal device opens an account.
  • the service package data indicates a default charging bandwidth policy of the terminal device, and the service is related to the service.
  • the data may also include specific QoS policies for a certain service, etc., which is not limited here.
  • Step 304 The PCF network element obtains a corresponding QoS policy according to the static contract data, and determines an effective mode of the QoS policy.
  • the PCF network element after the PCF network element obtains the static contract data of the terminal device 1 when accessing the core network from the UDR network element, it can generate a corresponding QoS policy according to the service requirements in the static contract data.
  • the service requirements may be If the transmission bandwidth is not less than 10Mbit / s, the GBR in the QoS policy corresponding to this service is 10Mbit / s.
  • the static contract data may include a QoS policy that requires GBR QoS guarantee for the service, in this case, the PCF network element may also directly obtain the QoS policy of the service from the static contract data.
  • the PCF network element After the PCF network element obtains the QoS policy, it can also set its effective mode for the QoS policy.
  • the effective mode is used to indicate whether other network elements immediately perform corresponding operations according to the QoS policy when receiving the QoS policy.
  • the effective mode may be used to indicate that the (R) AN network element is receiving.
  • a radio bearer is set up for the GBR QoS flow immediately or a radio bearer is set up for the GBR QoS flow.
  • no examples are given here.
  • the effective mode can be represented by a hysteresis attribute.
  • the effective mode can be marked as Mode information.
  • the effective mode can also be expressed in other forms, which is not limited here.
  • Mode information will be used.
  • the Mode information corresponds to at least two types of values, one of which is used to indicate immediate effect, which can also be referred to as coming into effect, and the other of which is used to indicate delayed effect. For example, for a service scenario where the QoS policy is obtained based on the static contract data in the UDR network element, there may be no service data transmission when acquiring the QoS policy. Therefore, only QoS guarantee is required when service data occurs.
  • the PCF network element may set the Mode information to be delayed to take effect, which is the scenario in the embodiment of the present application; for other service scenarios, for example, the service trigger or NEF of the QoS policy that originates from the AF network element
  • the network element's capabilities are open to trigger scenarios.
  • the AF network element's service trigger scenario is, for example, in the voice over voice (LTE) scenario based on the Internet protocol multimedia system (IMS).
  • the AF network element is a specific service.
  • Flow request QoS guarantee, NEF network element capability opening triggering scenarios such as the scenario where a third party (over the top, OTT) sends a request to a NEF network element to request a QoS improvement for a specific service flow.
  • the PCF network element When obtaining the QoS policy, it is clear that the service data corresponding to the QoS policy is about to occur or has already occurred.
  • the PCF network element can set the Mode information. It is effective immediately.
  • the value indication of the Mode information takes effect immediately.
  • the UPF network element, the (R) AN network element, and the terminal device After receiving the QoS policy, the UPF network element, the (R) AN network element, and the terminal device establish a radio bearer for the GBR QoS flow corresponding to the QoS policy.
  • the value indication of the Mode information indicates The delay takes effect.
  • the UPF network element, the (R) AN network element, and the terminal device do not establish a wireless bearer for the GBR QoS flow.
  • the network of the UPF network element, the (R) AN network element, and the terminal device, etc. Only when there is service data, it can establish a wireless bearer for the GBR QoS flow corresponding to the service data, which can meet the QoS requirements of the service data and reduce the waste of wireless resources, especially for the wireless transmission of GBR QoS flows. Waste of resources.
  • the Mode information can be implemented by one bit.
  • the value of this bit is 1, which means that the delay takes effect, and the value of this bit is 0, which means it takes effect immediately. In this way, the Mode information occupies less resources. And the instructions are clearer.
  • the Mode information can also have other implementation forms, which is not limited here.
  • the value of the Mode information can be set by the PCF network element, or it can also be carried in a service request for requesting QoS guarantee or QoS improvement for the service flow, for example, for services whose QoS policy originates from the AF network element. Trigger or NEF network element's ability to open the trigger scenario.
  • the value of this mode can also be carried in the request sent by the AF network element to the PCF network element to request QoS guarantee for a specific service flow or sent by the NEF network element to the PCF network element.
  • the request for QoS improvement for a specific service flow is sent to the PCF network element, which can increase the flexibility of the network system.
  • Mode information may be a part of the QoS policy and is included in the QoS policy.
  • one or more bits are added to the information field carrying the QoS policy to indicate the value of the Mode information, and the added bits are It also belongs to a part of the information field carrying the QoS policy; or, the Mode information and the QoS policy may also be two independent information, which is not limited herein.
  • Step 305 The PCF network element sends the QoS policy and the second information to the SMF network element, and the SMF network element receives the QoS policy and the second information.
  • the second information is used to indicate a delay in establishing a radio bearer for the GBR QoS flow. Because the PCF network element determines that the value of the Mode information indicates that the delay is effective, the Mode information is the second information. In the following description, the Mode information will be used as an example for description.
  • the PCF network element may send the QoS policy and the second information to the SMF network element at different time points.
  • Step 306 The SMF network element sends the QoS policy and Mode information to the UPF network element, and the UPF network element receives the QoS policy and Mode information.
  • the SMF network element processes the QoS policy. For example, the SQoS network element filters the content that does not need to be sent to the UPF network element from the received QoS policy to obtain the processed QoS policy. Send the processed QoS policy and Mode information to the UPF network element.
  • the QoS policy and Mode information are two separate pieces of information.
  • the SMF network element also needs to convert the Mode information into information that can be identified by the UPF network element. This is not repeated here. In this way, the computational complexity of the SMF network element can be reduced.
  • the Mode information can also be carried in the processed QoS policy, which is not limited here.
  • the SMF network element may also send the QoS policy and Mode information to the UPF network element in other ways, which is not limited herein.
  • the "this QoS policy" sent by the SMF network element to the UPF network element or other network elements should be understood as being obtained according to the QoS policy received by the SMF network element from the PCF network element, for example, ,
  • the QoS policy obtained after the filtering process may not be understood as the QoS policy exactly the same as the QoS policy received by the SMF network element from the PCF network element.
  • Step 307 The UPF network element performs corresponding processing according to the QoS policy.
  • the UPF network element After the UPF network element receives the Mode information from the SMF network element, it stores the QoS policy and performs corresponding processing according to the value of the Mode information. For example, if the value of the Mode information is used to indicate the immediate effect, the UPF network element may adopt the processing method of the third step in the process shown in FIG. 2, which is not repeated here. It is used to indicate that the delay is valid. After the UPF detects the service data corresponding to the QoS flow, it performs the third step in the process shown in FIG. 2 on the service data according to the stored QoS policy.
  • the value of the Mode information is used to indicate that the delay takes effect, that is, to indicate that the delay establishes a wireless bearer for the GBR QoS flow
  • the UPF network element identifies the service data corresponding to the GBR QoS flow, for example, from A QFI corresponding to the GBR QoS flow is acquired in the QoS policy, a mapping relationship between the GBR QoS flow and the QFI is established, and service data is identified through the QFI.
  • steps 301 to 307 are optional steps, that is, they do not have to be performed.
  • the SMF network element can also store the QoS policy and Mode information in advance.
  • the SMF network element can directly perform step 308 and actively The QoS policy and Mode information are sent to the (R) AN network element, which is not limited here.
  • Step 308 The SMF network element sends the QoS policy and Mode information to the (R) AN network element, and the (R) AN network element receives the QoS policy and Mode information.
  • the SMF network element After receiving the QoS policy from the PCF network element, the SMF network element processes the QoS policy. For example, the SMF network element generates a QFI according to the QoS policy, and filters out the QoS policy that does not need to be sent to the (R) AN network element. Information, obtain the processed QoS policy, and then send the Mode information and the processed QoS policy to the AMF network element, and the AMF network element sends the Mode information and the processed QoS policy to the (R) AN network element.
  • step 308 is the same as that of step 306.
  • step 308 refers to step 306, which is not repeated here.
  • Step 309 The (R) AN network element performs processing according to the Mode information.
  • the (R) AN network element After receiving the Mode information and the processed QoS policy, the (R) AN network element performs corresponding processing according to the value of the Mode information. For example, if the value of the Mode information is used to indicate immediate effect, the (R) AN network element may adopt the processing method of the fifth step in the process shown in FIG. 2, which will not be repeated here. The value is used to indicate that the delay takes effect, then the (R) AN network element does not temporarily allocate resources for the GBR QoS flow, and does not establish a radio bearer for the GBR QoS flow.
  • the value of the Mode information indicates that the delay takes effect as an example. Therefore, the (R) AN network element can save the QoS policy, temporarily not allocate resources for the GBR QoS flow, and not for the GBR QoS.
  • the flow establishes a radio bearer.
  • Step 310 The SMF network element sends the QoS policy and Mode information to the terminal device, and the terminal device receives the QoS policy and Mode information.
  • the SMF network element processes the QoS policy. For example, the SMF network element generates a QFI according to the QoS policy, and filters out the received QoS policy and does not need to send it to the terminal.
  • the content of the device obtains the processed QoS policy, and then sends the Mode information and the processed QoS policy to the AMF network element.
  • the AMF network element sends the Mode information and the processed QoS policy to the (R) AN network element.
  • the (R) AN network element sends the Mode information and the processed QoS policy to the terminal device. In this case, the AMF network element and the (R) AN network element transparently transmit the received QoS policy and Mode information without processing. .
  • step 310 is the same as that of step 306.
  • step 306 For the processing procedure of step 310, refer to step 306, and details are not described herein again.
  • Step 311 The terminal device performs processing according to the Mode information.
  • the terminal device After receiving the Mode information and the QoS policy after format conversion, the terminal device performs corresponding processing according to the value of the Mode information. For example, if the value of the Mode information is used to indicate that it takes effect immediately, the terminal device may adopt the processing method of the seventh step in the process shown in FIG. 1, which is not repeated here; if the value of the Mode information is used Indicates that the delay takes effect.
  • the terminal device obtains the QFI corresponding to the GBR QoS flow from the received QoS policy after format conversion, and establishes the mapping relationship between the GBR QoS flow and QFI. However, the terminal device does not perform QFI to wireless resource mapping for the time being. .
  • steps 308 to 311 may be to execute steps 308 to 311 in sequence, or to perform steps 308 and 310 respectively first, and then perform steps 309 and 311 respectively, or perform step 308 simultaneously. And step 310, and then execute step 309 and step 311 simultaneously.
  • the execution order of steps 308 to 311 is not limited.
  • both the (R) AN network element and the terminal device have obtained the QoS policy corresponding to the GBR QoS flow, but no radio bearer has been established for the GBR QoS flow.
  • the (R) AN network element needs to receive the first information indicating that the QoS policy corresponding to the GBR QoS flow has taken effect before establishing a radio bearer for the GBR QoS flow according to the QoS policy.
  • the QoS policy and the first information are different information and are obtained separately.
  • the first information is service data corresponding to the GBR QoS flow.
  • the first information acquisition methods may include, but are not limited to, the following two methods. The two different acquisition methods are described below through steps 312 and 313, respectively.
  • Step 312 The terminal device sends service data corresponding to the GBR QoS flow to the (R) AN network element.
  • each PDU session there is a default radio bearer between the (R) AN network element and the terminal device.
  • the terminal device determines that service data corresponding to the GBR QoS flow is required, the terminal device passes the The default radio bearer sends the service data to the (R) AN network element, and the service data to the (R) AN network element carries the QFI and Mode information of the GBR QoS flow.
  • step 314 is performed.
  • Step 313 The UPF network element sends service data corresponding to the GBR QoS flow to the (R) AN network element.
  • the UPF network element can identify the service data, identify the QFI corresponding to the GBR QoS flow for the service data, and send the service data to (R)
  • the AN network element carries the QFI and Mode information corresponding to the GBR QoS flow in the service data sent to the (R) AN network element.
  • step 314 is performed.
  • step 312 and step 313 can be selected to be performed, that is, if step 312 is performed, step 313 is not performed, or step 313 is not performed.
  • step 312 or step 313 may be selected and executed according to the sender of the service data of the GBR QoS flow. For example, if the sender of the service data of the GBR QoS flow is a terminal device, then step 312 is selected to be performed. The sender of the service data of the GBR QoS flow is a DN network element, and then step 313 is selected and executed. How to select step 312 or step 313 is not specifically limited in the embodiment of the present application.
  • Step 314 The (R) AN network element and the terminal device establish a radio bearer corresponding to the GBR QoS flow.
  • the (R) AN network element After the (R) AN network element receives service data sent by the terminal device and carrying QFI and Mode information related to the GBR QoS flow or service data sent by UPF network elements and carries QFI and Mode information related to the GBR QoS flow, The (R) AN network element and terminal device establish a corresponding radio bearer for the GBR QoS flow according to the QoS policy corresponding to the GBR QoS flow, so as to provide corresponding QoS guarantee for the service data flow.
  • the specific process of establishing a wireless bearer It is the same as the QoS related process in the prior art, and is not repeated here.
  • the (R) AN network element determines that it cannot establish a radio bearer for the GBR QoS flow according to the admission control principle, or (R) If there are no resources in the AN network element that match the QoS policy, the (R) AN network element reports the resource allocation failure result to the SMF network element. In the embodiment of the present application, the (R) AN network element successfully establishes a radio bearer for the GBR QoS flow as an example for description.
  • the relevant network elements used to establish the radio bearer can provide QoS guarantee for the GBR QoS flow according to the timing of service data occurrence, thereby avoiding The occurrence of unexpected service data causes resource waste caused by the vacancy of radio resources allocated by the (R) AN network element for the GBR QoS flow, which can improve resource utilization.
  • Step 315 The (R) AN network element monitors the service data transmission of the GBR QoS flow, determines that service data is not transmitted through the radio bearer within a preset period of time, and then releases the resources corresponding to the radio bearer.
  • the (R) AN network element After the (R) AN network element establishes a radio bearer for the GBR QoS flow, it is also necessary to detect the service data transmission in the radio bearer. If there is no service data transmission within a preset time period, the preset time period can be 10s or 30s. If so, the (R) AN network element recovers QFI aging resources and initiates a process of releasing resources related to the GBR QoS flow.
  • the (R) AN network element may trigger the release process of the resource according to the transmission of service data. In this way, when the resource is not required for service data transmission, the resource is actively released, which can further Improve resource utilization.
  • step 315 is an optional step, that is, it does not have to be performed.
  • the establishment process of the QoS flow includes the establishment process of the core network side tunnel (tunnel) and the establishment process of the radio bearer.
  • the establishment process of the radio bearer is described as an example.
  • the establishment process of the network-side tunnel is not limited in the embodiments of the present application.
  • the establishment process of the radio bearer is triggered by the QoS policy in the static subscription data in the UDR when the PDU session is established.
  • the establishment of the radio bearer may also be performed by the AF network element or a third party. Triggered, for example, in the VoLTE scenario, AF requests QoS guarantee for a specific service flow, or in a third-party QoS acceleration scenario, OTT requests QoS promotion for a specific service flow, etc. This situation will be described below.
  • FIG. 4 is a flowchart of a method for establishing a radio bearer according to another embodiment of the present application.
  • the description of the flowchart is as follows:
  • Step 401 The AF network element sends a QoS guarantee request for the service flow to the PCF network element, and the PCF network element receives the QoS guarantee request. After step 401 is performed, step 403 may be performed.
  • Step 402 The NEF network element sends a QoS improvement request for the service flow to the PCF network element, and the PCF network element receives the QoS improvement request.
  • the following description will use one of the service flows and the one of the service flows is a GBR QoS flow as an example. .
  • step 403 may also be performed.
  • step 401 and step 402 may be selected from one of the steps, that is, only step 401 is not performed, or step 402 is performed only, and step 401 is not performed.
  • Step 4 is taken as an example for illustration in FIG. 4.
  • the QoS guarantee request or the QoS promotion request may also carry an effective mode of a QoS policy.
  • the effective mode is the same as that in step 304, and will not be repeated here.
  • the The effective mode is marked as Mode information as an example for illustration. Since the AF network element sends a QoS guarantee request to the PCF network element or when the NEF network element sends a QoS improvement request to the PCF network element, it is clear that the service data corresponding to the GBR QoS flow is about to occur. Therefore, the QoS guarantee request or QoS improvement The value of the Mode information carried in the request is effective immediately.
  • the QoS guarantee request or QoS promotion request may not carry Mode information, which is not limited herein.
  • Mode information is the same as the Mode information in step 304, and details are not described herein again.
  • Step 403 The PCF network element generates a QoS policy corresponding to the GBR QoS flow according to the QoS guarantee request or the QoS promotion request.
  • the method for the PCF network element to generate a corresponding QoS policy according to the QoS guarantee request or the QoS promotion request is the same as the method for generating a corresponding QoS policy in the first step in FIG. 1, and details are not described herein again.
  • Mode information is not carried in the QoS guarantee request or QoS promotion request.
  • the PCF network element After generating the QoS policy corresponding to the GBR QoS flow, the PCF network element needs to set the value of Mode information for the QoS policy. In this case, the PCF network element takes the value indication of the Mode information into effect immediately.
  • Step 404 The PCF network element sends the QoS policy and the first information to the SMF network element, and the SMF network element accepts the QoS policy and the first information.
  • the first information is used to indicate that the QoS policy is about to take effect. Because the PCF network element determines that the value indication of the Mode information is effective immediately, the Mode information is the first information. In the following description, the Mode information will be used as an example for description.
  • Step 405 The SMF network element sends the QoS policy and Mode information to the UPF network element, and the UPF network element receives the QoS policy and Mode information.
  • Step 406 The UPF network element performs processing according to the Mode information.
  • the UPF network element After the UPF network element receives the Mode information from the SMF network element, it can perform corresponding processing according to the value of the Mode information.
  • the value of the Mode information is used to indicate immediate effect.
  • the UPF network element may adopt the processing method of the third step in the process shown in FIG. 1, and details are not described herein again.
  • Step 407 The SMF network element sends the QoS policy and Mode information to the (R) AN network element, and the (R) AN network element receives the QoS policy and Mode information.
  • Steps 404 to 407 are the same as steps 305 to 308, and details are not described herein again.
  • Step 408 The (R) AN network element performs processing according to the Mode information.
  • the (R) AN network element After receiving the Mode information and the QoS policy, the (R) AN network element performs corresponding processing according to the value of the Mode information.
  • the corresponding relationship between the value of the specific Mode information and the operation of the (R) AN network element is the same as that in step 309, and details are not described herein again.
  • the value indication of the Mode information takes effect immediately as an example. Therefore, the (R) AN network element adopts the processing method of the fifth step in the process shown in FIG. 1 to provide the GBR QoS flow. Allocating resources and establishing a radio bearer corresponding to the GBR QoS flow are not repeated here.
  • Step 409 The SMF network element sends the QoS policy and Mode information to the terminal device, and the terminal device receives the QoS policy and Mode information.
  • Step 409 is the same as step 310, and details are not described herein again.
  • Step 410 The terminal device performs processing according to the Mode information.
  • the terminal device After receiving the Mode information and the QoS policy, the terminal device performs different processing according to the value of the Mode information.
  • the corresponding relationship between the value of the specific Mode information and the operation of the terminal device is the same as that in step 311, and details are not described herein again.
  • the terminal device since the value indication of the Mode information takes effect immediately, the terminal device adopts the processing method of the seventh step in the process shown in FIG. 1 to implement the mapping of GBR QoS flow to QFI, and QFI to The mapping of wireless resources, so as to establish a wireless bearer for the GBR QoS flow, will not be repeated here.
  • the (R) AN network element and the terminal device establish a wireless bearer for the GBR QoS flow, thereby providing QoS guarantee for the service data corresponding to the GBR QoS flow.
  • the effective mode of the QoS policy for example, Mode information
  • the relevant network elements used to establish the wireless bearer can immediately indicate that the QoS policy is in the immediate effective mode when the effective mode of the QoS policy indicates
  • the GBR QoS flow establishes a wireless bearer and provides QoS guarantee for the GBR QoS flow, thereby avoiding the radio resource allocated by the (R) AN network element for the GBR QoS flow from being vacant due to the occurrence of unexpected service data.
  • the problem of waste of resources can improve the utilization of resources.
  • the AF network element or a third party When the AF network element or a third party does not need to use the GBR QoS flow any more, it sends a control instruction to the (R) AN network element to release the radio bearer.
  • the establishment process of the radio bearer is determined by the (R) AN network element according to the effective mode of the QoS policy or according to whether service data occurs, and whether the establishment is required immediately or delayed, and the (R) AN network element can Supports monitoring the transmission of business data and determining whether to recover resources based on the transmission of business data.
  • the (R) AN network element can Supports monitoring the transmission of business data and determining whether to recover resources based on the transmission of business data.
  • SMF network elements or UPF network elements it only needs to support the function of forwarding the effective mode of the QoS policy, and SMF The network elements and UPF network elements have minor changes.
  • FIG. 5 a flowchart of the method. The description of the diagram is as follows:
  • Step 501 The terminal device sends a PDU session establishment request to the SMF network element, and the SMF network element receives the PDU session establishment request.
  • Step 501 is the same as step 301, and details are not described herein again.
  • the service flow is taken as an example of the GBR QoS flow in the PDU session, and the terminal device is one of the terminal devices that interacts with the SMF network element.
  • Step 502 The SMF network element sends a QoS policy request corresponding to the PDU session to the PCF network element, and the PCF network element receives the QoS policy request.
  • Step 503 The PCF network element obtains the static contract data of the terminal device from the UDR network element.
  • Step 504 The PCF network element obtains a corresponding QoS policy according to the static contract data, and determines an effective mode of the QoS policy.
  • the effective mode of the QoS policy is the same as that in step 304.
  • the effective mode of the QoS policy may be Mode information.
  • the value of the Mode information is used to indicate that the delay is valid for example.
  • steps 501 to 504 are optional steps, that is, they do not have to be performed.
  • Step 505 The PCF network element sends the QoS policy and the second information to the SMF network element, and the SMF network element receives the QoS policy and the second information.
  • the second information is used to indicate a delay in establishing a radio bearer for the GBR QoS flow. Because the PCF network element determines that the value of the Mode information indicates that the delay is effective, the Mode information is the second information.
  • the Mode information will be used as an example for description.
  • Steps 502 to 505 are the same as steps 302 to 305, and details are not described herein again.
  • Step 506 The SMF network element performs processing according to the Mode information.
  • the SMF network element After receiving the Mode information from the PCF network element, the SMF network element performs corresponding processing according to the value of the Mode information. For example, if the SMF network element determines that the value indication of the Mode information is effective immediately, the SMF network element sends the QoS policy to the UPF network element, the (R) AN network element, and the terminal device, respectively.
  • the SMF network element determines that the value of the Mode information indicates that the delay is effective, the SMF network element sends the QoS policy and the Mode and other information to the UPF network element, and enables the service detection and reporting function of the UPF network element, and the SMF network
  • the meta buffer buffers the QoS policy sent to the (R) AN network element and the terminal device, that is, the QoS policy is not temporarily sent to the (R) AN network element and the terminal device.
  • the SMF network element enables the service detection and reporting function of the UPF network element, which can be completed by the usage report function in the prior art.
  • the usage report function can be used to detect the start and end of service data. Afterwards, when the UPF network element detects the start of the service data and the service data ends, it reports to the SMF network element, which will not be repeated here.
  • the SMF network element taking the value of the Mode information to indicate that the delay is effective, that is, instructing the delay to establish a radio bearer for the GBR QoS flow as an example, the SMF network element sends the QoS policy and the Mode information to the UPF network element only. And enable the service detection and reporting function of the UPF network element.
  • the method for the SMF network element to send the QoS policy to the UPF network element is the same as that in step 306, and details are not described herein again.
  • Step 507 The UPF network element performs processing according to the information received from the SMF network element.
  • step 507 may include, but is not limited to, the following two cases:
  • the SMF network element determines that the value of the Mode information indicates that the delay is effective, it sends the QoS policy and the Mode information to the UPF network element.
  • the SMF network element determines that the value of the Mode information takes effect immediately, it sends the UPF to the UPF.
  • the network element sends the QoS policy but does not send the Mode information.
  • the UPF network element performs corresponding processing according to whether the Mode information is received. For example, if the UPF network element determines that the Mode is not received from the SMF network element. Information, the UPF network element adopts the processing method of the third step in the process shown in Figure 1, and implements the corresponding charging and bandwidth control control strategies.
  • the UPF network element determines that it has received the Mode from the SMF network element Information, the UPF network element implements service identification and mapping of the GBR QoS flow to the QFI carried in the QoS policy, implements the corresponding control strategy, and enables the service detection and reporting functions.
  • the SMF network element sends the QoS policy and the Mode information to the UPF network element.
  • the UPF network element receives the Mode information according to the received Mode information. Take the value for corresponding processing. For example, if the UPF network element judges that the value indication of the Mode information is effective immediately, the UPF network element adopts the processing method of the third step in the process shown in FIG. 1 to implement the corresponding process.
  • Control strategies such as charging and bandwidth control; if the UPF network element judges that the value of the Mode information indicates that the delay is effective, the UPF network element implements service identification and mapping of the GBR QoS flow to the QFI carried in the QoS policy, and implements the corresponding Control strategy, and enable business detection and reporting functions.
  • the value of the Mode information indicates that the delay takes effect.
  • the UPF network element determines that the Mode information is received from the SMF network element, and the UPF network element implements service identification and the GBR QoS flow arrives.
  • the QFI mapping carried in the QoS policy implements the corresponding control strategy and enables the service detection and reporting functions.
  • Step 508 When the UPF network element detects the service data of the GBR QoS flow, it sends the first information to the SMF network element, and the SMF network element receives the first information.
  • the first information is used to indicate that the QoS policy of the GBR QoS flow has taken effect.
  • the first information may be related signaling for reporting information to the SMF network element in the usage reporting function, and the UPF network element may choose to carry QFI when reporting to the SMF network element, which is not limited herein.
  • Step 509 The SMF network element sends the QoS policy to the (R) AN network element, and the (R) AN network element receives the QoS policy.
  • the SMF network element When the SMF network element receives the first information sent by the UPF network element, it determines that the QoS policy of the GBR QoS flow has taken effect, and then sends the QoS policy obtained by the PCF network element to the (R) AN network element, and the SMF network element
  • the process of sending the QoS policy to the (R) AN network element is the same as step 308, and is not repeated here. It should be noted that, in this case, the SMF network element only sends the QoS policy to the (R) AN network element, and does not send Mode information.
  • Step 510 The (R) AN network element and the terminal device establish a radio bearer for the GBR QoS flow.
  • Step 510 is the same as the fifth step in the process shown in FIG. 1, and details are not described herein again.
  • Step 511 The SMF network element sends the QoS policy to the terminal device, and the terminal device receives the QoS policy.
  • the SMF network element When the SMF network element receives the first information sent by the UPF network element, it determines that the QoS policy of the GBR QoS flow has taken effect, and then sends the QoS policy obtained by the PCF network element to the terminal device, and the SMF network element sends the terminal device.
  • the process of the QoS policy is the same as step 310, and details are not described herein again.
  • the SMF network element only sends the QoS policy to the terminal device, and does not send Mode information.
  • Step 512 The terminal device implements mapping of the GBR QoS flow to QFI, and mapping of QFI to resources allocated by the (R) AN network element.
  • Step 512 is the same as the seventh step in the process shown in FIG. 1 and will not be repeated here.
  • steps 509 to 512 may be to execute steps 509 to 512 in sequence, or to perform steps 509 and 511 respectively, and then perform steps 510 and 512 respectively, or perform step 509 at the same time. And step 511, and then execute step 510 and step 512 simultaneously.
  • the execution order of steps 509 to 512 is not limited.
  • the SMF network element can provide the network element used to establish the radio bearer to the network element used to establish the radio bearer according to the timing of the service data of the GBR QoS flow, such as ( R) AN network element, terminal equipment, etc. send the QoS policy corresponding to the GBR QoS flow to provide QoS guarantee for the GBR QoS flow, thereby avoiding the occurrence of (R) AN network element due to the unexpected timing of business data.
  • the problem of resource waste caused by vacant radio resources allocated by GBR QoS flow can improve resource utilization.
  • Step 513 The UPF network element monitors the service data transmission of the GBR QoS flow, determines that the service data is not transmitted through the radio bearer within a preset time, sends third information to the SMF network element, and the SMF network element receives the third information.
  • the third information is used to indicate that service data of the GBR QoS flow is not detected within the preset time period.
  • the third information may be implemented through related signaling in the usage reporting function, and details are not described herein again.
  • the UPF network element After the UPF network element reports the first information to the SMF network element, it is also necessary to detect the transmission of service data in the radio bearer. If there is no service data transmission within a preset period, the preset period may be 10s or 30s, etc.
  • the UPF network element sends the third information to the SMF network element.
  • Step 514 The SMF network element sends the fourth information to the (R) AN network element, and the (R) AN network element receives the fourth information.
  • the fourth information is used to instruct the (R) AN network element to release the radio bearer.
  • the SMF network element can trigger the release process of the resource by the (R) AN network element according to the transmission of service data, so that when the resource is not required for service data transmission, it actively releases the resource, which can further improve the utilization of the resource. rate.
  • Step 515 The (R) AN network element releases the radio bearer.
  • steps 513-515 are not required to be performed, they are optional steps.
  • the establishment process of the radio bearer is triggered by the QoS policy in the static subscription data in the UDR when the PDU session is established.
  • the establishment of the radio bearer may also be performed by the AF network element or a third party Triggered, for example, in the VoLTE scenario, AF requests QoS guarantee for a specific service flow, or in a third-party QoS acceleration scenario, OTT requests QoS promotion for a specific service flow, etc. This situation will be described below.
  • FIG. 6 is a flowchart of a method for establishing a radio bearer according to another embodiment of the present application.
  • the description of the flowchart is as follows:
  • Step 601 The AF network element sends a QoS guarantee request for the service flow to the PCF network element, and the PCF network element receives the QoS guarantee request. After step 601 is performed, step 603 may be performed.
  • Step 602 The NEF network element sends a QoS improvement request for the service flow to the PCF network element, and the PCF network element receives the QoS improvement request.
  • the following description will use one of the service flows and the one of the service flows is a GBR QoS flow as an example. .
  • step 603 may be performed.
  • step 601 and step 602 may be selected to be performed, that is, only step 601 is not performed, or step 602 is performed only, and step 601 is not performed.
  • step 601 is taken as an example for description.
  • Step 603 The PCF network element generates a QoS policy corresponding to the GBR QoS flow according to the QoS guarantee request or the QoS promotion request.
  • Step 604 The PCF network element sends the QoS policy and the first information to the SMF network element, and the SMF network element accepts the QoS policy and the first information.
  • the first information is used to indicate that the QoS policy is about to take effect. Since the PCF network element determines that the value indication of the Mode information is effective immediately, the Mode information is the first information. In the following description, the Mode information will be used as an example for description.
  • Steps 601 to 604 are the same as steps 401 to 404, and details are not described herein again. Steps 601 to 603 are optional steps, that is, they do not have to be performed.
  • Step 605 The SMF network element performs processing according to the Mode information.
  • the SMF network element After receiving the Mode information from the PCF network element, the SMF network element performs corresponding processing according to the value of the Mode information.
  • the corresponding relationship between the value of the specific Mode information and the operation of the SMF network element is the same as that in step 506, and details are not described herein again.
  • the SMF network element determines to send the QoS policy to the UPF network element, the (R) AN network element, and the terminal device, respectively.
  • step 605 includes the process of the SMF network element sending the QoS policy to the UPF network element, the process of sending the QoS policy to the (R) AN network element, and the process of sending the QoS policy to the terminal device, respectively.
  • the processing method is the same as that of the second step, the fourth step, and the sixth step in the flow shown in FIG. 1, and details are not described herein again.
  • Step 606 The UPF network element performs processing according to the information received from the SMF network element.
  • step 606 may include, but is not limited to, the following two cases. The introduction of these two cases is the same as that in step 507, and details are not described herein again.
  • the first case is taken as an example for description. Since the value indication of the Mode information takes effect immediately, the SMF network element only sends the QoS policy to the UPF network element without sending the Mode information. In this case, the UPF network element determines that the Mode information is not received from the SMF network element. Then, the UPF network element adopts the processing method of the third step in the flow shown in FIG. 1 to implement corresponding control policies such as charging and bandwidth control.
  • Step 607 The (R) AN network element establishes a radio bearer for the GBR QoS flow according to the QoS policy.
  • Step 608 The terminal device implements mapping of the service flow to QFI and mapping of QFI to wireless resources according to the QoS policy.
  • Step 607 is the same as step 510, and step 608 is the same as step 512, and details are not described herein again.
  • the (R) AN network element and the terminal device establish a wireless bearer for the GBR QoS flow, thereby providing QoS guarantee for the service data corresponding to the GBR QoS flow.
  • the SMF network element can indicate to the network for establishing the wireless bearer when the effective mode of the QoS policy indicates that the QoS policy is the immediate effective mode.
  • (R) AN network element, terminal equipment, etc. send the QoS policy corresponding to the GBR QoS flow to provide QoS guarantee for the service flow, thereby avoiding the (R) AN network caused by the unexpected timing of business data.
  • the problem of resource waste caused by the vacancy of the radio resources allocated for the GBR QoS flow can improve the resource utilization rate.
  • the AF network element or a third party When the AF network element or a third party does not need to use the GBR QoS flow any more, it sends a control instruction to the (R) AN network element to release the radio bearer.
  • the SMF network element is responsible for determining whether to establish a wireless bearer for the service flow immediately or delayed according to the value of the Mode information, and to enable the service check and report function of the UPF network element to Determining the timing of service data occurrence, only when the service data occurs or when the value of the Mode information takes effect immediately, the QoS policy is sent to the (R) AN network element and the terminal device, so that the (R) AN network element and the terminal device are based on The QoS policy establishes a wireless bearer for the service flow and provides QoS guarantee for the service flow.
  • the (R) AN network element and the terminal device itself do not sense the Mode information. In this way, the (R) AN network element and the terminal device can be reduced. Operational complexity.
  • the access network element, the session management function network element, and the user plane function network element may include a hardware structure and / or a software module.
  • the hardware structure, the software module, or The hardware structure and software modules are used to implement the above functions. Whether one of the above functions is executed by a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application of the technical solution and the design constraint conditions.
  • FIG. 7 shows a schematic structural diagram of a device 700.
  • the device 700 may be a hardware structure, a software module, or a hardware structure plus a software module.
  • the apparatus 700 may be implemented by a chip system.
  • the chip system may be composed of a chip, and may also include a chip and other discrete devices.
  • the apparatus 700 may include an obtaining unit 701 and a processing unit 702.
  • the device 700 may be an access network element, which can implement the functions of the access network element in the method provided in the embodiment of the present application, or can support the access network element to provide the network element provided in the embodiment of the present application.
  • the obtaining unit 701 in this embodiment may be configured to perform step 308 and / or step 312 and / or step 313 in the embodiment shown in FIG. 3, and / or to perform step 407 in the embodiment described in FIG. 4 , And / or other processes used to support the techniques described herein.
  • the obtaining unit 701 is used for the device 700 to communicate with other modules, and may be a circuit, a device, an interface, a bus, a software module, a transceiver, or any other device that can implement communication.
  • the processing unit 702 may be configured to perform step 309 and / or step 314 and / or step 315 in the embodiment shown in FIG. 3, and / or to perform step 408 in the embodiment described in FIG. 4, and / or Other procedures to support the techniques described herein.
  • the device 700 may be a session management function network element, which can implement the functions of the session management function network element in the method provided in the embodiment of the present application, or a network element that can support the session management function, to implement the embodiment of the present application.
  • the obtaining unit 701 in this embodiment may be configured to perform step 505 and / or step 508 and / or step 513 in the embodiment shown in FIG. 5 and / or to perform step 604 in the embodiment described in FIG. 6 , And / or other processes used to support the techniques described herein.
  • the obtaining unit 701 is used for the device 800 to communicate with other modules, and may be a circuit, a device, an interface, a bus, a software module, a transceiver, or any other device that can implement communication.
  • the processing unit 702 may be configured to perform step 506 in the embodiment shown in FIG. 5, and / or used to perform step 605 in the embodiment described in FIG. 6, and / or used to support other techniques described herein. process.
  • the device 700 may be a user plane function network element, which can implement the functions of the user plane function network element in the method provided in the embodiment of the present application; the device 900 may also be a user plane function network element which can support the application.
  • the obtaining unit 701 in this embodiment may be configured to perform step 506 in the embodiment shown in FIG. 5 and / or used to perform step 605 in the embodiment shown in FIG. 6 and / or used to support the description described herein. Other processes of technology.
  • the obtaining unit 701 is used for the device 900 to communicate with other modules, and may be a circuit, a device, an interface, a bus, a software module, a transceiver, or any other device that can implement communication.
  • the processing unit 702 may be configured to perform step 507 and / or step 513 in the embodiment shown in FIG. 5, and / or used to perform step 606 in the embodiment shown in FIG. 6, and / or used to support what is described herein. Other processes described in the technique.
  • each functional module in each embodiment of the present application may be integrated into one process. In the device, it can also exist alone physically, or two or more modules can be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or software functional modules.
  • the apparatus 800 may be a chip system.
  • the chip system may be composed of a chip, and may also include a chip and other discrete devices.
  • the device 800 may be an access network element in the embodiment shown in FIG. 3 or FIG. 4, and can implement the function of the access network element in the method provided in the embodiment of FIG. 3 or FIG. 4 of this application. It may also be an apparatus capable of supporting an access network element to implement the function of an access network element in the method provided in the embodiment shown in FIG. 3 or FIG. 4 or an apparatus capable of supporting an access network element to implement FIG. 3 of the present application. Or an apparatus for accessing a function of a network element in the method provided in the embodiment shown in FIG. 4.
  • the device 800 may be a chip system. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.
  • the apparatus 800 includes at least one processor 820, which is configured to implement or be used to support the apparatus 800 to implement a function of an access network element in the method provided in the embodiment shown in FIG. 3 or FIG. 4 of the present application.
  • the processor 820 may, upon receiving the first information indicating that the QoS policy has taken effect or is about to take effect, establish a wireless bearer for the service flow according to the QoS policy. For details, see the detailed description in the method example. Here, Do not go into details.
  • the apparatus 800 may further include at least one memory 830 for storing program instructions and / or data.
  • the memory 830 and the processor 820 are coupled.
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be electrical, mechanical or other forms for information exchange between devices, units or modules.
  • the processor 820 may operate in cooperation with the memory 830.
  • the processor 820 may execute program instructions stored in the memory 1030. At least one of the at least one memory may be included in a processor. When the processor 820 executes the program instructions in the memory 830, the method shown in FIG. 3 or FIG. 4 may be implemented.
  • the device 800 may further include a communication interface 810 for communicating with other devices through a transmission medium, so that the devices used in the device monitoring device 800 may communicate with other devices.
  • the other device may be a session management function network element.
  • the processor 820 may use the communication interface 810 to send and receive data.
  • the embodiments of the present application are not limited to the specific connection medium between the communication interface 810, the processor 820, and the memory 830.
  • the memory 830, the processor 820, and the communication interface 810 are connected by a bus 840 in FIG. 8.
  • the bus is indicated by a thick line in FIG. 8.
  • the connection modes of other components are only schematically illustrated. It is not limited.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 8, but it does not mean that there is only one bus or one type of bus.
  • the processor 820 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, and a discrete hardware component, which may be implemented. Or execute each method, step, and logic block diagram disclosed in the embodiments of the present application.
  • a general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the memory 830 may be a non-volatile memory, such as a hard disk (HDD) or a solid-state drive (SSD), and may also be a volatile memory (volatile memory). For example, random-access memory (RAM).
  • the memory is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer.
  • the memory in the embodiment of the present application may also be a circuit or any other device capable of realizing a storage function, and is configured to store program instructions and / or data.
  • the device 800 may also be a session management function network element, which can implement the functions of the session management function network element in the method provided in the embodiment of the present application, or a network element that can support the session management function, to implement the application
  • the apparatus provided by the example provides the functions of the session management function network element.
  • the processor 820 is configured to implement or support the device 1100 to implement the functions of the session management function network element in the method provided in the embodiment of the present application.
  • the processor 820 may send the QoS policy to an access network element when receiving the first information indicating that the QoS policy has taken effect or is about to take effect.
  • the memory 830 is configured to store program instructions and / or data.
  • the memory 830 and the processor 820 are coupled.
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be electrical, mechanical or other forms for information exchange between devices, units or modules.
  • the processor 820 may operate in cooperation with the memory 830.
  • the processor 820 may execute program instructions stored in the memory 830. At least one of the at least one memory may be included in a processor.
  • the processor 820 executes the program instructions in the memory 830, the method shown in FIG. 5 or FIG. 6 may be implemented.
  • the communication interface 810 is configured to communicate with other devices through a transmission medium, so that the devices used in the device 800 can communicate with other devices. Exemplarily, the other device may be an access network element.
  • the processor 820 may use the communication interface 810 to send and receive data.
  • the device 800 may also be a user plane function network element in the embodiment shown in FIG. 5 or FIG. 6, which can implement the user plane function network element in the method provided in the embodiment of FIG. 5 or FIG. 6 of this application.
  • the function may also be a device capable of supporting a user plane function network element to implement the functions of the user plane function network element in the method provided in the embodiment shown in FIG. 5 or FIG. 6 of the present application.
  • Such a processor 820 is configured to implement or support the device 800 to implement the functions of the user plane function network element in the method provided by the embodiment shown in FIG. 5 or FIG. 6 of the present application.
  • the processor 820 may send the first information to the session management function network element that indicates that the quality of service QoS policy of the service flow has taken effect when the data packet of the service flow is detected. Description, not repeated here.
  • the memory 830 is configured to store program instructions and / or data.
  • the memory 830 and the processor 820 are coupled.
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be electrical, mechanical or other forms for information exchange between devices, units or modules.
  • the processor 820 may operate in cooperation with the memory 830.
  • the processor 820 may execute program instructions stored in the memory 1230. At least one of the at least one memory may be included in a processor.
  • the communication interface 810 is configured to communicate with other devices through a transmission medium, so that the devices used in the device 800 can communicate with other devices.
  • the other device may be a session management function network element.
  • the processor 820 may use the communication interface 810 to send and receive data.
  • An embodiment of the present application further provides a computer-readable storage medium, including instructions, which, when run on a computer, enable the computer to execute the execution performed by the access network element described in any one of the embodiments in FIG. 3 to FIG. 4.
  • An embodiment of the present application provides a chip system that includes a processor and may further include a memory for implementing a function of an access network element in the foregoing method, or for implementing a function of a network element for a session management function, or Used to implement the functions of the user plane function network element.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • An embodiment of the present application provides a system including the foregoing access network element and / or the session management function network element and the user plane function network element.
  • the methods provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented in software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present invention are wholly or partially generated.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable device.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, a computer, a server, or a data center. Transmission by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL) or wireless (such as infrared, wireless, microwave, etc.) to another website site, computer, server, or data center.
  • a computer-readable storage medium may be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media integrations.
  • the available media may be magnetic media (for example, floppy disks, hard disks, Magnetic tape), optical media (for example, digital video disc (DVD) for short), or semiconductor media (for example, SSD).

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Abstract

La présente invention concerne un procédé et un appareil pour établir une porteuse radio et surveiller un flux de services. Le procédé comprend les étapes suivantes : un élément de réseau d'accès acquiert d'abord une stratégie QoS d'un flux de services ; et établit une porteuse radio pour le flux de services selon la stratégie QoS après avoir reçu des premières informations indiquant que la stratégie QoS a déjà pris effet ou va prendre effet. De cette manière, l'élément de réseau d'accès n'établit la porteuse radio selon la stratégie QoS reçue que lorsqu'il reçoit les informations indiquant que la stratégie QoS reçue est en mode "a déjà pris effet" ou en mode "va prendre effet". Sinon, l'élément de réseau d'accès n'établit pas la porteuse radio selon la stratégie QoS. Par conséquent, l'invention permet d'établir la porteuse radio de manière sélective en fonction de situations réelles et de réduire le gaspillage de ressources radio.
PCT/CN2019/087679 2018-05-31 2019-05-21 Procédé et appareil pour établir une porteuse radio et surveiller un flux de services WO2019228214A1 (fr)

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