WO2019218982A1 - 一种移动边缘计算方法及装置 - Google Patents

一种移动边缘计算方法及装置 Download PDF

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Publication number
WO2019218982A1
WO2019218982A1 PCT/CN2019/086716 CN2019086716W WO2019218982A1 WO 2019218982 A1 WO2019218982 A1 WO 2019218982A1 CN 2019086716 W CN2019086716 W CN 2019086716W WO 2019218982 A1 WO2019218982 A1 WO 2019218982A1
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Prior art keywords
mec
new
target ran
user equipment
message
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PCT/CN2019/086716
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English (en)
French (fr)
Inventor
李勇
颜欢
刘宇
曹龙雨
金德鹏
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华为技术有限公司
清华大学
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Priority to EP19802679.1A priority Critical patent/EP3780497B1/en
Publication of WO2019218982A1 publication Critical patent/WO2019218982A1/zh
Priority to US17/099,436 priority patent/US11803409B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0803Configuration setting
    • H04L41/0806Configuration setting for initial configuration or provisioning, e.g. plug-and-play
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00Arrangements for program control, e.g. control units
    • G06F9/06Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44Arrangements for executing specific programs
    • G06F9/455Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
    • G06F9/45533Hypervisors; Virtual machine monitors
    • G06F9/45558Hypervisor-specific management and integration aspects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0895Configuration of virtualised networks or elements, e.g. virtualised network function or OpenFlow elements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/34Signalling channels for network management communication
    • H04L41/342Signalling channels for network management communication between virtual entities, e.g. orchestrators, SDN or NFV entities
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/12Reselecting a serving backbone network switching or routing node
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/14Reselecting a network or an air interface
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00Arrangements for program control, e.g. control units
    • G06F9/06Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44Arrangements for executing specific programs
    • G06F9/455Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
    • G06F9/45533Hypervisors; Virtual machine monitors
    • G06F9/45558Hypervisor-specific management and integration aspects
    • G06F2009/45562Creating, deleting, cloning virtual machine instances
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00Arrangements for program control, e.g. control units
    • G06F9/06Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44Arrangements for executing specific programs
    • G06F9/455Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
    • G06F9/45533Hypervisors; Virtual machine monitors
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    • G06F2009/45595Network integration; Enabling network access in virtual machine instances
    • HELECTRICITY
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    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/04Network management architectures or arrangements
    • H04L41/042Network management architectures or arrangements comprising distributed management centres cooperatively managing the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/40Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using virtualisation of network functions or resources, e.g. SDN or NFV entities
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing data switching networks
    • H04L43/08Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0817Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing data switching networks
    • H04L43/20Arrangements for monitoring or testing data switching networks the monitoring system or the monitored elements being virtualised, abstracted or software-defined entities, e.g. SDN or NFV
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies

Definitions

  • the present application relates to the field of information technology, and in particular, to a mobile edge computing method and apparatus.
  • MEC mobile edge computing
  • 5G fifth-generation mobile communication
  • the MEC server is considered to be migrated during the mobile handover.
  • the method is based on the historical location record collected by the user in the cloud, and predicts the user at the next moment in the cloud.
  • the location according to the predicted result and the user's required computing resources, the virtualization function to find a new MEC server that meets the conditions, and pre-configures a new virtual machine (VM) in the new MEC server.
  • VM virtual machine
  • the user switches it detects that the configured new virtual machine is available, and sends the corresponding internet protocol (IP) address and port number to the user, so that the new virtual machine serves the user.
  • IP internet protocol
  • the disadvantage of the prior art method is that the position of the user at the next moment is predicted according to the historical position of the user recorded in the cloud, the accuracy of the prediction is not guaranteed, a prediction error occurs, and an unnecessary virtual machine is created when the error is predicted, thereby A waste of resources. Especially when a large number of users access the MEC server at the same time, such a waste of resources may cause some users to use the MEC server, resulting in a decline in the user experience.
  • the present invention provides a method and a device for calculating a mobile edge, which solves the problem of resource waste when a user switches in a mobile switch in the prior art.
  • the present application provides a mobile edge calculation method, where the method includes: a mobile edge calculation MEC management network element receives a request of an MEC virtualization resource sent by a target radio access network RAN control plane, where the target The RAN control plane belongs to the target RAN after the user equipment is switched, and the request for the MEC virtualization resource includes the MEC computing resource requirement of the user equipment; the MEC management network element is in the MEC server according to the request of the MEC virtualization resource. Creating a new virtual machine VM for the user equipment, where the new VM is a VM used by the target RAN side after the user equipment is switched; and the MEC management network element sends a message to the target RAN control plane.
  • the first information of the new VM wherein the first information includes an ID of the new VM.
  • the MEC management network element for managing the virtualization resource of the MEC server is added to the MEC management network element according to the received request of the MEC virtualization resource sent by the RAN control plane. Creating a new VM for the user equipment on the virtualized resource, continuing to provide the MEC application service for the user equipment on the new VM, and sending the first VM of the new VM to the target RAN control plane by the MEC management network element.
  • the information is such that the user equipment can automatically switch to the new VM on the target RAN side under the premise of ensuring service continuity, which reduces the transmission delay and improves the user experience.
  • the MEC management network element receives the MEC VM working status query request sent by the target RAN control plane, where the MEC VM working status query request includes a new VM ID;
  • the MEC management network element queries the status information of the new VM according to the ID of the new VM, where the status information includes an activation status and a normal status; and the MEC management network element sends the status information to the target RAN control plane.
  • Status information of the new VM is a configurable status query request sent by the target RAN control plane, where the MEC VM working status query request includes a new VM ID;
  • the MEC management network element queries the status information of the new VM according to the ID of the new VM, where the status information includes an activation status and a normal status; and the MEC management network element sends the status information to the target RAN control plane.
  • Status information of the new VM is a configurable status query request sent by the target RAN control plane.
  • the MEC management network element queries the new VM ID information according to the MEC VM status information sent by the target RAN control plane, queries the status information of the new VM, and sends the status information of the new VM to the target.
  • the RAN control plane, the target RAN control plane determines whether to use the new VM instead of the old VM based on the received state information of the new VM.
  • the MEC management network element receives a status event of the VM reported by the MEC server, and the status event of the VM includes a correspondence between an ID of the new VM and status information of the VM.
  • the MEC management network element can receive the status event of the VM reported by the MEC server, so as to facilitate the subsequent query of the state of the VM.
  • the MEC management network element receives a data migration message sent by the target RAN control plane, where the data migration message is used to indicate that the MEC server uses the new VM to replace the old one.
  • a VM performing data interaction between the user equipment and the target RAN, where the old VM is a VM used on the source RAN side before the user equipment handover; the MEC management network element sends the data migration message And the MEC server is instructed to use the new VM to replace the old VM, and perform data interaction between the user equipment and the target RAN.
  • the MEC management network element starts data migration according to the received data migration message, that is, the new VM is used instead of the old VM, and data interaction between the user equipment and the target RAN is performed, because the preset is performed.
  • the new VM can directly use the data interaction between the user equipment and the target RAN, which can reduce the transmission delay.
  • the present application provides a mobile edge calculation method, where the method includes: a target radio access network RAN control plane receives a handover request message sent by a source RAN control plane, where the handover request message includes a user equipment
  • the MEC calculates a resource requirement, where the target RAN control plane belongs to the target RAN after the user equipment handover, and the source RAN control plane belongs to the source RAN before the user equipment handover; the target RAN control plane is according to the And a request for the MEC management network element to send the MEC virtualized resource to the mobile edge, where the request for the MEC virtualized resource includes the MEC computing resource requirement of the user equipment; the target RAN control plane receiving station
  • the new VM is a VM used on the target RAN side after the user equipment is switched,
  • the target RAN control sends a handover command message to a software defined network SDN controller, wherein the handover command message includes an IP address of the target RAN, and the handover command message is used to indicate a user
  • the device switches from the source RAN side to the target RAN side; the target RAN control plane receives the handover command response message sent by the SDN controller.
  • the target RAN control sends an MEC VM working status query request to the MEC management network element, where the MEC VM working status query request includes an ID of a new VM; the target RAN The control plane receives the MEC management network element to send status information of the new VM, where the status information includes an activation status and a normal status.
  • the target RAN controls to send a data forwarding message to the SDN controller, where the data forwarding message is used to instruct the SDN controller to forward data sent to the old VM to the
  • the new VM specifically, the data forwarding message includes an IP address of the old VM and an IP address of the new VM.
  • the target RAN control plane receives a flow table update completion message sent by the SDN controller, where the flow table update completion message is used to notify the target RAN control plane to notify the MEC management network. Meta data migration.
  • the target RAN control sends a data migration message to the MEC management network element, where the data migration message is used to indicate that the MEC server uses the new VM to replace the old VM.
  • the target RAN control sends an update RAN forwarding to the SDN controller
  • the surface flow table information is used to instruct the SDN controller to instruct the target RAN forwarding plane to forward data between the user equipment and the new VM.
  • the present application provides a mobile edge calculation method, where the method includes: a software defined network SDN controller receives a handover command message sent by a target RAN control plane, where the handover command message includes an IP of the target RAN An address, the handover command message is used to indicate that the user equipment is handed over from the source RAN side to the target RAN side; and the SDN controller sends a handover command response message to the target RAN control plane.
  • the SDN controller sends a first packet out message to the user equipment UE, where the first packet out message carries RRC reconf message data, and the RRC reconf message is sent through the target RAN forwarding plane. Sended to the UE, the RRC reconf message includes radio resource control RRC parameter configuration information.
  • the SDN controller receives a data forwarding message sent by the target RAN control plane, where the data forwarding message is used to instruct the SDN controller to forward data sent to the old VM.
  • a new VM wherein the old VM is a VM used on the source RAN side before the user equipment is switched, and the new VM is a VM used on the target RAN side after the user equipment is switched, specifically
  • the data forwarding message includes an IP address of the old VM and an IP address of the new VM, and is used to instruct the SDN controller to forward data sent to the old VM to the new VM.
  • the SDN controller sends a flow table message to the switch between the new VM and the old VM, the flow table message is used by the switch to indicate that the UE will not be uploaded.
  • the MEC application data is sent to the new VM for processing, and the data from the new VM is sent to the UE.
  • the SDN controller sends a flow table update complete message to the target RAN control plane, to notify the target RAN control plane to notify the MEC management network element to perform data migration.
  • the SDN controller receives an update RAN forwarding plane flow table message sent by the target RAN control plane, to indicate that the SDN controller instructs the target RAN forwarding plane to forward the user equipment and the Describe the data between the new VMs.
  • the present application provides a mobile edge computing device, including a transceiver unit and a processing unit, and the transceiver unit and the processing unit can implement the method of any one of the foregoing first aspects and the first aspect thereof by interaction. .
  • the present application provides a mobile edge computing device, including a transceiver unit and a processing unit, and the transceiver unit and the processing unit can implement the method process of any of the foregoing second aspects and the second aspect thereof by interaction. .
  • the present application provides a mobile edge computing device, including a transceiver unit and a processing unit, and the transceiver unit and the processing unit can implement the method process of any of the foregoing third aspects and the third aspect thereof by interaction. .
  • the embodiment of the present application further provides an apparatus, including a processor, a memory, and a communication interface, where the memory is used to store a computer program, and the processor is configured to read a computer program stored in the memory and implement The method provided by any one of the first aspect, the first aspect, the second aspect, the second aspect, the third aspect, and the third aspect.
  • the present application further provides a computer readable storage medium, configured to perform any one of the foregoing first aspect, any one of the first aspect, the second aspect, and the second aspect, A computer software instruction for use in a function of any one of the third aspect and the third aspect, comprising any one of the first aspect, the first aspect, the second aspect, and the second aspect A program designed by any one of the design, the third aspect, and the third aspect.
  • the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform any one of the first aspect and/or the first aspect, and/or the second aspect, and And/or any one of the second aspect, and/or the third aspect, and/or the third aspect of the method.
  • FIG. 1 is a schematic diagram of a network architecture provided by the present application.
  • FIG. 2 is a schematic diagram of a new network architecture provided by the present application.
  • FIG. 3 is a flowchart of a method for calculating a mobile edge according to the present application
  • FIG. 5 is a schematic diagram of a mobile edge computing device provided by the present application.
  • FIG. 6 is a hardware structural diagram of an apparatus provided by the present application.
  • the embodiment of the present invention provides a method and a device for calculating a mobile edge, which are used to solve the problem of waste of resources when a user equipment is switched in the prior art.
  • the method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.
  • MEC mobile edge computing
  • MEC can be understood as a marginal big data processing platform, which cuts the traditional data center into various small data centers and places them on the edge nodes (servers) of the network, so as to be closer to the users and provide users with faster service and reach. Better network performance.
  • servers edge nodes
  • SDN software defined networking
  • the network architecture model in which the control plane and the forwarding plane are separated is as shown in FIG. 1.
  • a radio access network (RAN) control plane On the control plane, a radio access network (RAN) control plane, a gateway control plane, and a mobility management entity (mobility) are included.
  • Management entity, MME Management entity, MME and SDN controller.
  • the MEC server is considered to be migrated during the mobile handover.
  • the method is based on the historical location record collected by the user in the cloud, and predicts the user at the next moment in the cloud.
  • the location according to the predicted result and the user's required computing resources, the virtualization function to find a new MEC server that meets the conditions, and pre-configures a new virtual machine (VM) in the new MEC server.
  • VM virtual machine
  • the user switches it detects that the configured new virtual machine is available, and sends the corresponding internet protocol (IP) address and port number to the user, so that the new virtual machine serves the user.
  • IP internet protocol
  • the disadvantage of the prior art method is that the position of the user at the next moment is predicted according to the historical position of the user recorded in the cloud, the accuracy of the prediction is not guaranteed, a prediction error occurs, and an unnecessary virtual machine is created when the error is predicted, thereby A waste of resources. Especially when a large number of users use the MEC application service at the same time, such a waste of resources may cause some users to use the MEC application service, resulting in a decline in the user experience.
  • UE User equipment
  • MS mobile station
  • MT mobile terminal
  • UE User equipment
  • Devices for example, handheld devices with wireless connectivity, in-vehicle devices, and the like.
  • terminals are: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality.
  • MIDs mobile internet devices
  • VR virtual reality
  • the wireless terminal in the wireless terminal, the wireless terminal in the transportation safety, the wireless terminal in the smart city, the wireless terminal in the smart home, etc., the UE in the present application can be highly reliable and low latency.
  • a radio access network (RAN) node is a device that accesses a terminal device to a wireless network in the network.
  • the network device is a node in the radio access network, and may also be a network device, and may also be called a base station (BS).
  • BS base station
  • Some examples of network devices are: gNB, transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), and Node B (Node).
  • B, NB base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit , BBU), or wireless fidelity (Wifi) access point (AP).
  • the network device may include a centralized unit (CU) node and a distributed unit (DU) node.
  • CU centralized unit
  • DU distributed unit
  • This structure separates the protocol layer of the eNB in the long term evolution (LTE) system, and the functions of some protocol layers are centrally controlled by the CU, and the functions of some or all of the protocol layers are distributed in the DU by the CU. Centrally control the DU.
  • LTE long term evolution
  • the flow table stores the rules for processing and forwarding the service packets of the user equipment.
  • Each flow entry in the flow table usually includes three parts: the value of the matching field, the processing action, and the statistics.
  • the matching field specifies the value of some or all of the fields of the packet header.
  • the forwarding plane extracts the value of each field from the packet header part, and then matches the matching field of all the flow entries in the flow table. The values match and the flow entries that can be successfully matched are obtained.
  • the processing action specifies how to handle the successfully matched data packet.
  • the options include forwarding, discarding, and modifying the value of the header part field from a certain port.
  • the statistics record information such as the number of packets processed by each flow table, the total number of bytes, and the like.
  • Multiple means two or more.
  • the MEC management network element that manages the virtualization resource of the MEC server is added, and the MEC management network element is in the MEC according to the request of the MEC virtualization resource sent by the received RAN control plane.
  • the first information is such that when the user equipment switches in the process of using the MEC, the user equipment can automatically switch to the new VM on the target RAN side under the premise of ensuring service continuity, thereby reducing the transmission delay and improving the user experience.
  • a mobile edge computing method is proposed, which is based on a new mobile communication network architecture for implementing MEC proposed in the present application.
  • the specific schematic diagram is shown in FIG. 2, based on the architecture of FIG.
  • the MEC management network element is added, and the MEC management network element is used to manage the virtualized computing resources on the MEC server.
  • FIG. 2 includes: an SDN controller, a MEC management network element, a RAN control plane, an MME, a gateway control plane, and an OpenFlow switch.
  • the RAN control plane includes a RAN control plane network element
  • the gateway control plane includes a gateway control plane network element
  • the SDN controller is responsible for managing data packet processing rules, and the flow table and related configurations are passed between the SDN controller and the switch.
  • the MEC management network element is responsible for managing the virtualized resources on the MEC server, maintaining the working state of the virtualized resources, and starting data migration between the old and new VMs.
  • the MEC management network element periodically monitors the MEC server.
  • Resource usage such as used resources and/or remaining resources, the above resources refer to disk capacity, memory, CPU, etc.
  • the MEC management network element subscribes to the VM working status event to the MEC server, when the VM state changes on the MEC server And sending a status change notification to the MEC management network element;
  • the RAN control plane is responsible for parsing the MEC application service request message sent by the user and encapsulating the corresponding response message, and notifying the MEC management network element and the SDN controller to perform the process related to providing the MEC application service.
  • the RAN forwarding plane contains data processing for the air interface (packet data convergence p Rotocol, PDCP), radio link control (RLC), media access control (MAC) and physical layer (physical (PHY)), and data processing for the core network side; MME is responsible for mobility management
  • the gateway control plane is responsible for selecting the appropriate gateway forwarding plane to forward the uplink and downlink data;
  • the OpenFlow switch is responsible for processing and forwarding the service packets of the user equipment according to the flow table.
  • FIG. 3 The specific process of providing the MEC application service for the user equipment when the user equipment first requests the MEC application service under the new network structure is as shown in FIG. 3, and the following is a schematic diagram of the mobile communication network architecture of the MEC.
  • a mobile edge calculation method provided by the present application is specifically described with reference to FIG. include:
  • Step 301 The user equipment UE sends a control signaling message to the RAN forwarding plane.
  • the UE may also request the MEC application service by using the control signaling message to the MEC management network element, where the content of the control signaling message includes a UEID, a cell ID, and an MEC computing resource requirement information of the UE, where the UE
  • the MEC computing resource requirement information may include, but is not limited to, information such as a required central processing unit (CPU) resource size, disk space, and memory size.
  • the control signaling message may be encapsulated in a first radio resource control (RRC) message for transmission.
  • the type field may be added to the first RRC message, and the value of the type field is specifically set to the MEC request type. Indicates that the RRC message is a message regarding the MEC application service request.
  • Step 302 The RAN forwarding plane sends the received control signaling message to the SDN controller by using a Packet in message.
  • the RAN forwarding plane matches the foregoing control signaling message in the first flow table that has been configured in the switch, that is, the first flow table determines that the control signaling message is sent to the SDN through the Packet in message.
  • the controller, the specific matching field is a port number corresponding to the receiving control signaling message.
  • Step 303 After receiving the foregoing control signaling message, the SDN controller forwards the message to the RAN control plane.
  • Step 304 After receiving the foregoing control signaling message, the RAN control plane parses, according to the RRC message type field, that the control signaling message is a MEC application service request message.
  • Step 305 The RAN control plane forwards the control signaling message to the MEC management network element.
  • Step 306 After receiving the foregoing control signaling request message, the MEC management network element determines, according to the resource usage status of the current MEC server, whether the user device has a corresponding VM, and if not, creates a new VM for the user equipment. .
  • Step 307 The MEC management network element sends the information of the new VM to the RAN control plane.
  • the information of the new VM may include the ID of the new VM, the IP and port number of the new VM, and the like.
  • Step 308 The RAN control sends a configuration second flow table request to the SDN controller, and configures a radio protocol stack message of the RAN forwarding plane.
  • the foregoing configuration second flow table request includes a UEIP, an IP and a port number of the new VM, and the like.
  • Step 309 The SDN controller sends the second flow table to the RAN forwarding plane by using a Flow mod message.
  • the foregoing second flow table is configured by the switch, and may be two flow tables, where the two flow tables are divided into an upstream flow table and a downstream flow table, where the upstream flow table is used to upload the foregoing UE.
  • the MEC application service data is forwarded to the new VM; the downstream table is used to return new VM data to the UE in the future.
  • Step 310 The SDN controller sends a Packet out message to the RAN forwarding plane.
  • the packet out message includes a wireless protocol stack message configured with a RAN forwarding plane.
  • Step 311 The SDN controller sends a configuration completion message to the RAN control plane, and is configured to notify the foregoing RAN control plane that the second flow table and the radio protocol stack message configuring the RAN forwarding plane have been configured.
  • Step 312 The RAN control sends a status information query message of the new VM to the MEC management network element, where the status information query message of the new VM includes the ID of the new VM.
  • Step 313 The MEC management network element sends status information of the new VM to the RAN control plane.
  • the status information of the new VM includes the working status of the new VM, and the working status of the new VM includes an activated status and a normal status.
  • Step 314 The RAN control plane receives status information of a new VM sent by the MEC management network element.
  • the MEC management network element determines whether the working state of the new VM is the startup state. If it is determined that the working state of the new VM is the startup state, it continues to wait for the MEC management network element to send the status information of the new VM next time; if it is determined that the working state of the new VM is the normal state, the second RRC that is sent to the UE is encapsulated. a message, wherein the type field value in the second RRC message is set to a MEC response type.
  • Step 315 The RAN control plane sends the second RRC message to the UE via the RAN forwarding plane.
  • the second RRC message further includes an IP and a port number of the new VM.
  • Step 316 The user equipment sends data related to the MEC application service to the RAN forwarding plane.
  • Step 317 The RAN forwarding plane forwards the data related to the MEC application service to a new VM on the MEC server according to the rule in the second flow table.
  • the newly added MEC management network element establishes a new VM for the user equipment on the MEC server, implements the MEC application service request of the user, and enables the MEC application service request sent by the user equipment by extending the RRC protocol.
  • the message can be correctly parsed, the user MEC application service request is parsed through the RAN control plane, and the related process is executed.
  • the MEC application service can be provided to the user equipment flexibly and efficiently.
  • the UE When the UE is using the MEC application service, if it is necessary to switch from one base station to another, how to ensure the continuity of the service and avoid the waste of resources involved in the prior art is the most important problem to be solved in this application.
  • the UE switches from one base station to another when using the MEC application service.
  • the MEC management network element creates a new VM for the UE on the MEC server, that is, Assuring the continuity of the business avoids the waste of resource cases in the prior art.
  • a mobile edge calculation method proposed by the present application is described in detail below by a complete embodiment, where the source RAN control plane and the source RAN forwarding plane belong to the base station before the UE handover, the target RAN control plane and the target RAN forwarding plane. It belongs to the base station after the UE is switched.
  • the specific steps are shown in Figure 4:
  • Step 401 The source RAN control plane receives the measurement report sent by the UE, and performs decision switching.
  • the foregoing measurement report is forwarded to the source RAN control plane by the source RAN forwarding plane and the SDN controller after being sent by the UE.
  • Step 402 The source RAN controls the target RAN control plane to send a handover request message.
  • the foregoing switching request message includes the MEC context information, where the MEC context information is specifically the IP address of the old VM of the source RAN side MEC, the port number, the MEC computing resource requirement of the UE, and the like.
  • Step 403 The target RAN control plane calculates, according to the handover request message, a request for the MEC management network element to send the MEC virtualization resource to the mobile edge.
  • the request for the MEC virtualized resource includes the MEC computing resource requirement of the user equipment, specifically including a CPU, a memory, a disk space, and the like.
  • Step 404 The MEC management network element creates a new virtual machine VM for the user equipment on the MEC server according to the request of the MEC virtualization resource and according to the monitored resource usage on the MEC server.
  • the new VM is a VM used on the target RAN side after the user equipment is switched.
  • Step 405 The MEC management network element sends the first information of the new VM to the target RAN control plane.
  • the first information includes an ID of the new VM
  • the first message further includes an IP, a port number, and the like of the channel VM.
  • Step 406 The target RAN control sends a handover command message to the software defined network SDN controller.
  • the handover command message includes an IP address of the target RAN, and the handover command message is used to indicate that the user equipment switches from the source RAN side to the target RAN side.
  • Step 407 The SDN controller sends a first flow table (Flow mod) message to the source RAN forwarding plane.
  • Flow mod flow table
  • the first flow table message is used to indicate that the data received from the old VM before the handover is forwarded to the new virtual machine VM corresponding to the target RAN side, and the MEC application sent by the user equipment UE is received from the target RAN control plane.
  • the data packet is forwarded to the old VM corresponding to the source RAN side.
  • Step 408 The SDN controller sends a second flow table message to the target RAN forwarding plane.
  • the second flow table message is used to forward the MEC application data that has not been transmitted before the handover to the old VM corresponding to the source RAN side, and forward the data of the old VM corresponding to the source RAN side to the UE.
  • Step 409 The SDN controller sends a handover command response message to the target RAN control plane.
  • Step 410 The SDN controller sends a first packet out message to the UE.
  • the first packet out message carries RRC reconf message data, and the RRC reconf message is sent to the UE by using a RAN forwarding plane, where the RRC reconf message includes radio resource control RRC parameter configuration information, and the target RAN forwarding switch
  • the first packet out message is received, and is sent to the PDCP entity according to the port specified in the message, and then sent to the UE.
  • Step 411 The target RAN control sends an MEC VM working status query request to the MEC management network element.
  • the MEC VM working status query request includes the ID of the new VM.
  • Step 412 The MEC management network element queries status information of the new VM according to the ID of the new VM, and the MEC management network element sends status information of the new VM to the target RAN control plane.
  • the status information includes the startup status and the normal status.
  • the MEC management network element obtains the VM status information on the MEC server by subscribing to the status event of the VM.
  • the MEC management is reported to the MEC management.
  • the network element or periodically reports the working status to the MEC management network element. How to report the embodiment of the present application is not limited.
  • the status event of the VM includes the correspondence between the ID of the new VM and the status information of the VM.
  • Step 413 The target RAN control plane determines whether to perform the next step according to the received status information of the new VM. Specifically, if it is determined that the new VM is in the startup state, no processing is performed; if it is determined that the VM is in the normal state, the next step is performed.
  • Step 414 The target RAN control sends a data forwarding message to the SDN controller.
  • the data forwarding message includes an IP address of the old VM and an IP address of the new VM, and is used to instruct the SDN controller to forward data sent to the old VM to the New VM.
  • Step 415 The SDN controller sends a flow table message to the switch between the new VM and the old VM, and configures a flow table.
  • the flow table message is used to instruct the UE to send the un-applied MEC application data to the new VM for processing, and send data from the new VM to the UE.
  • Step 416 The SDN controller sends a flow table update complete message to the target RAN control plane. Specifically, the flow table update completion message is used to notify the target RAN control plane to notify the MEC management network element to perform data migration.
  • Step 417 The target RAN control sends a data migration message to the MEC management network element.
  • the data migration message is used to instruct the MEC server to use the new VM to replace the old VM, and perform data interaction between the user equipment and the target RAN.
  • Step 418 The MEC management network element sends the data migration message to the MEC server, instructing the MEC server to use the new VM to replace the old VM, and perform data between the user equipment and the target RAN. Interaction.
  • Step 419 The target RAN control sends an update RAN forwarding plane flow table information to the SDN controller.
  • the SDN controller is instructed to instruct the target RAN forwarding plane to forward data between the user equipment and the new VM.
  • Step 420 The SDN controller sends the third flow table message to the target RAN forwarding plane.
  • the SDN controller sends the foregoing third flow table message to the target RAN forwarding plane switch, and is configured to configure two flow tables, which are respectively an upstream flow table, configured to receive the MEC application data that has not been uploaded before the handover, and forward the data to the new one.
  • VM a downstream table that forwards data from the new VM to the UE.
  • Step 421 The SDN controller sends a second packet out message to the source RAN forwarding plane, where the second packet out message is used to indicate that the data sent by the user equipment to the old VM has been transmitted.
  • the MEC management network element that manages the virtualization resource of the MEC server is added, and the MEC management network element is in the MEC according to the request of the MEC virtualization resource sent by the received RAN control plane.
  • the first information is such that when the user equipment switches in the process of using the MEC, the user equipment can automatically switch to the new VM on the target RAN side under the premise of ensuring service continuity, thereby reducing the transmission delay and improving the user experience.
  • the present application further provides a schematic diagram of a mobile edge computing device, as shown in FIG. 5, including a transceiver unit 501 and a processing unit 502, wherein the transceiver unit 501 is configured to receive target wireless access.
  • the request for the MEC virtualization resource sent by the network RAN control plane, where the target RAN control plane belongs to the target RAN after the user equipment is switched, and the request for the MEC virtualization resource includes the MEC computing resource requirement of the user equipment;
  • the processing unit 502 is configured to create a new virtual machine VM for the user equipment on the MEC server according to the request of the MEC virtualization resource, where the new VM is used on the target RAN side after the user equipment is switched.
  • the transceiver unit 501 is further configured to send the first information of the new VM to the target RAN control plane, where the first information includes an ID of the new VM.
  • the transceiver unit 501 and the processing unit 502 are also respectively configured to perform operations required to be performed by the MEC management network element in the foregoing embodiment.
  • a schematic diagram of two types of mobile edge computing devices is also provided, which are the same as the schematic diagram of FIG. 5, but respectively represent the structure of the RAN control plane and the SDN controller.
  • the transceiver unit 501 and the processing unit 502 respectively use The operations required to perform the RAN control plane and the SDN controller in the above embodiments are performed.
  • each functional module in each embodiment of the present application may be integrated into one processing. In the device, it can also be physically existed alone, or two or more modules can be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules.
  • an apparatus may include the processor 602.
  • the hardware of the entity corresponding to the processing unit 502 may be the processor 602.
  • the processor 602 can be a central processing unit (English: central processing unit, CPU for short), or a digital processing module or the like.
  • the device may further include a communication interface 601 (which may be a transceiver), and the hardware entity corresponding to the transceiver unit 501 may be the communication interface 601.
  • the device can also include a memory 603 for storing programs executed by the processor 602.
  • the memory 603 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid state drive (SSD), or a volatile memory (English: volatile) Memory), such as random access memory (English: random-access memory, abbreviation: RAM).
  • Memory 603 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.
  • the processor 602 is configured to execute the program code stored in the memory 603, specifically for executing the method described in the embodiments shown in FIG. 3 and FIG. For the methods described in the embodiments shown in FIG. 3 and FIG. 4, the application will not be repeated herein.
  • connection medium between the communication interface 601, the processor 602, and the memory 603 is not limited in the embodiment of the present application.
  • the memory 603, the processor 602, and the communication interface 601 are connected by a bus 604 in FIG. 6.
  • the bus is indicated by a thick line in FIG. 6, and the connection manner between other components is only schematically illustrated. , not limited to.
  • 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 shown in Figure 6, but it does not mean that there is only one bus or one type of bus.
  • the embodiment of the invention further provides a computer readable storage medium for storing computer software instructions required to execute the above-mentioned processor, which comprises a program for executing the above-mentioned processor.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • At least one means one or more, and "a plurality” means two or more.
  • At least one of the following or a similar expression thereof refers to any combination of these items, including any combination of a single item or a plurality of items.
  • at least one of "a, b, or c" may mean: a, b, c, ab ( That is, a and b), ac, bc, or abc, wherein a, b, and c may be single or plural.
  • the size of the serial numbers of the above processes does not mean the order of execution, and some or all of the steps may be performed in parallel or sequentially, and the execution order of each process shall be
  • the intrinsic logic is determined without any limitation on the implementation process of the embodiments of the present application.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

一种移动边缘计算方法及装置,用以解决现有技术中用户设备在移动切换时,资源浪费的问题。移动边缘计算MEC管理网元接收目标无线接入网RAN控制面发送的MEC虚拟化资源的请求,其中,所述目标RAN控制面属于用户设备切换后的目标RAN,所述MEC虚拟化资源的请求中包括所述用户设备的MEC计算资源需求;所述MEC管理网元根据所述MEC虚拟化资源的请求在MEC服务器上为所述用户设备创建新的虚拟机VM,所述新的VM为所述用户设备切换后在所述目标RAN侧使用的VM;所述MEC管理网元向所述目标RAN控制面发送所述新的VM的第一信息,其中,所述第一信息包括所述新的VM的ID。

Description

一种移动边缘计算方法及装置
本申请中要求在2018年05月16日提交中国专利局、申请号为201810470173.8、申请名称为“一种移动边缘计算方法及装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及信息技术领域,尤其涉及一种移动边缘计算方法及装置。
背景技术
随着移动智能设备数量的持续增长,以及各种新服务类型的出现,传统的云计算技术已经难以满足日益增长的业务需求,于是,欧洲电信标准化协会(ETSI)提出了移动边缘计算(mobile edge computing,MEC)的概念,它是将计算能力下沉到分布式基站,在移动网络的边缘提供近似云端计算、存储和处理的能力。MEC作为第五代移动通信(5-generation,5G)网络体系架构演进的关键技术,可满足系统对于吞吐量、时延、网络可伸缩性和智能化等多方面要求。
在现有MEC技术中,考虑用户在移动切换时,MEC服务器会产生迁移,为了保证业务的连续性,采用的方法是根据在云端收集到的用户历史位置记录,在云端预测用户下一个时刻的位置,根据预测结果和用户所需计算资源、虚拟化功能寻找符合条件的新的MEC服务器,预先在新MEC服务器配置好新的虚拟机(virtual machine,VM)。当用户切换后,检测到配置的新的虚拟机可用,将对应的互联网协议(internet protocol,IP)地址和端口号发送给用户,使新的虚拟机为用户进行服务。但现有技术的方法的缺点在于根据记录在云端的用户历史位置预测用户下一时刻的位置,预测的准确性没有办法保证,会发生预测错误,当预测错误时会创建多余的虚拟机,从而产生资源浪费。特别是在大量用户同时接入MEC服务器的时候,这样的资源浪费会导致一部分用户无法使用MEC服务器,从而造成用户体验下降。
综上所述,如何保证用户在移动切换时,减少资源的浪费是目前需要解决的问题。
发明内容
本申请提供一种移动边缘计算方法及装置,用以解决现有技术中的问题用户在移动切换时,资源浪费的问题。
第一方面,本申请提供了一种移动边缘计算方法,所述方法包括:移动边缘计算MEC管理网元接收目标无线接入网RAN控制面发送的MEC虚拟化资源的请求,其中,所述目标RAN控制面属于用户设备切换后的目标RAN,所述MEC虚拟化资源的请求中包括所述用户设备的MEC计算资源需求;所述MEC管理网元根据所述MEC虚拟化资源的请求在MEC服务器上为所述用户设备创建新的虚拟机VM,所述新的VM为所述用户设备切换后在所述目标RAN侧使用的VM;所述MEC管理网元向所述目标RAN控制面发送所述新的VM的第一信息,其中,所述第一信息包括所述新的VM的ID。
通过上述方法,相比于现有技术增加了管理MEC服务器的虚拟化资源的MEC管理网元,上述MEC管理网元根据接收到的RAN控制面发送的MEC虚拟化资源的请求,在 MEC服务器的虚拟化资源上为用户设备创建新的VM,在所述新的VM上继续为用户设备提供MEC应用服务,并且上述MEC管理网元向所述目标RAN控制面发送所述新的VM的第一信息,这样用户设备在使用MEC应用过程中发生切换时,能在保证业务连续性前提下自动切换到目标RAN侧的新的VM上,降低传输时延,提高用户体验。
在一种可能的设计中,所述MEC管理网元接收所述目标RAN控制面发送的MEC VM工作状态查询请求,其中,所述MEC VM工作状态查询请求中包括新的VM的ID;所述MEC管理网元根据所述新的VM的ID,查询所述新的VM的状态信息,其中,所述状态信息包括启动状态和正常状态;所述MEC管理网元向所述目标RAN控制面发送所述新的VM的状态信息。
通过该方法,上述MEC管理网元根据目标RAN控制面发送的MEC VM状态信息查询请求中携带的新的VM的ID,查询新的VM的状态信息,并将新的VM的状态信息发送给目标RAN控制面,目标RAN控制面根据接收到的新的VM的状态信息判断是否使用新的VM代替旧的VM。
在一种可能的设计中,所述MEC管理网元接收所述MEC服务器上报的VM的状态事件,所述VM的状态事件包括所述新的VM的ID与VM的状态信息的对应关系。
通过该方法,当MEC服务器上VM的状态发生改变时,MEC管理网元就可以接受到MEC服务器上报的VM的状态事件,方便后续查询VM的状态。
在一种可能的设计中,所述MEC管理网元接收所述目标RAN控制面发送的数据迁移消息,其中,所述数据迁移消息用于指示所述MEC服务器使用所述新的VM代替旧的VM,进行所述用户设备和目标RAN间的数据交互,其中,所述旧的VM为所述用户设备切换前在源RAN侧使用的VM;所述MEC管理网元将所述数据迁移消息发送给所述MEC服务器,指示所述MEC服务器使用所述新的VM代替所述旧的VM,进行所述用户设备和目标RAN间的数据交互。
通过该方法,上述MEC管理网元根据接收到的数据迁移消息开始进行数据迁移,即采用新的VM代替所述旧的VM,进行所述用户设备和目标RAN间的数据交互,因为预先设置了代替旧的VM的新的VM,可以直接使用新的VM实现用户设备和目标RAN间的数据交互,可以降低传输时延。
第二方面,本申请提供一种移动边缘计算方法,所述方法包括:目标无线接入网RAN控制面接收源RAN控制面发送的切换请求消息,其中,所述切换请求消息中包括用户设备的MEC计算资源需求,其中,所述目标RAN控制面属于所述用户设备切换后的目标RAN,所述源RAN控制面属于所述用户设备切换前的源RAN;所述目标RAN控制面根据所述切换请求消息,向移动边缘计算MEC管理网元发送MEC虚拟化资源的请求,其中,所述MEC虚拟化资源的请求中包括所述用户设备的MEC计算资源需求;所述目标RAN控制面接收所述MEC管理网元发送的新的VM的第一信息,其中,所述新的VM是所述MEC管理网元根据所述MEC虚拟化资源的请求在MEC服务器上为用户设备创建的新的VM,所述新的VM为所述用户设备切换后在所述目标RAN侧使用的VM,所述第一信息包括所述新的VM的ID。
在一种可能的设计中,所述目标RAN控制面向软件定义网络SDN控制器发送切换命令消息,其中,所述切换命令消息包括所述目标RAN的IP地址,所述切换命令消息用于指示用户设备从源RAN侧切换到目标RAN侧;所述目标RAN控制面接收所述SDN控制 器发送的切换命令响应消息。
在一种可能的设计中,所述目标RAN控制面向所述MEC管理网元发送MEC VM工作状态查询请求,其中,所述MEC VM工作状态查询请求中包括新的VM的ID;所述目标RAN控制面接收所述MEC管理网元发送所述新的VM的状态信息,其中,所述状态信息包括启动状态和正常状态。
在一种可能的设计中,所述目标RAN控制面向SDN控制器发送数据转发消息,其中,所述数据转发消息用于指示所述SDN控制器将发给所述旧的VM的数据转发给所述新的VM,具体的,所述数据转发消息包括所述旧的VM的IP地址以及所述新的VM的IP地址。
在一种可能的设计中,所述目标RAN控制面接收所述SDN控制器发送的流表更新完成消息,所述流表更新完成消息用于通知所述目标RAN控制面通知所述MEC管理网元进行数据迁移。
在一种可能的设计中,所述目标RAN控制面向所述MEC管理网元发送数据迁移消息,其中,所述数据迁移消息用于指示所述MEC服务器使用所述新的VM代替旧的VM,进行所述用户设备和目标RAN间的数据交互,其中,所述旧的VM为所述用户设备切换前在源RAN侧使用的VM;所述目标RAN控制面向所述SDN控制器发送更新RAN转发面流表信息,用于指示所述SDN控制器指示目标RAN转发面转发所述用户设备与所述新的VM间的数据。
第三方面,本申请提供一种移动边缘计算方法,所述方法包括:软件定义网络SDN控制器接收目标RAN控制面发送的切换命令消息,其中,所述切换命令消息包括所述目标RAN的IP地址,所述切换命令消息用于指示用户设备从源RAN侧切换到目标RAN侧;所述SDN控制器向所述目标RAN控制面发送切换命令响应消息。
在一种可能的设计中,所述SDN控制器向用户设备UE发送第一packet out消息,其中,所述第一packet out消息携带RRC reconf消息数据,通过目标RAN转发面将所述RRC reconf消息发送给所述UE,所述RRC reconf消息包括无线资源控制RRC参数配置信息。
在一种可能的设计中,所述SDN控制器接收所述目标RAN控制面发送的数据转发消息,其中,所述数据转发消息用于指示所述SDN控制器将发给旧的VM的数据转发给新的VM,其中,所述旧的VM为所述用户设备切换前在源RAN侧使用的VM,所述新的VM为所述用户设备切换后在所述目标RAN侧使用的VM,具体的,所述数据转发消息包括旧的VM的IP地址以及新的VM的IP地址,用于指示所述SDN控制器将发给所述旧的VM的数据转发给所述新的VM。
在一种可能的设计中,所述SDN控制器向所述新的VM和所述旧的VM间的交换机发送流表消息,所述流表消息用于所述交换机指示所述UE将未上传的MEC应用数据发送到新的VM上进行处理,以及将来自新的VM的数据发送给所述UE。
在一种可能的设计中,所述SDN控制器向所述目标RAN控制面发送流表更新完成消息,用于通知所述目标RAN控制面可以通知所述MEC管理网元进行数据迁移。
在一种可能的设计中,所述SDN控制器接收所述目标RAN控制面发送的更新RAN转发面流表消息,用于指示所述SDN控制器指示目标RAN转发面转发所述用户设备与所述新的VM间的数据。
第四方面,本申请提供一种移动边缘计算装置,包括收发单元和处理单元,收发单元 和处理单元通过交互配合可以实现上述第一方面及其第一方面中任一种可能的设计的方法过程。
第五方面,本申请提供一种移动边缘计算装置,包括收发单元和处理单元,收发单元和处理单元通过交互配合可以实现上述第二方面及其第二方面中任一种可能的设计的方法过程。
第六方面,本申请提供一种移动边缘计算装置,包括收发单元和处理单元,收发单元和处理单元通过交互配合可以实现上述第三方面及其第三方面中任一种可能的设计的方法过程。
第七方面,本申请实施例还提供了一种装置,包括处理器、存储器和通信接口,所述存储器用于存储计算机程序,所述处理器用于读取所述存储器中存储的计算机程序并实现第一方面、第一方面的任意一种设计、第二方面、第二方面的任意一种设计、第三方面、第三方面的任意一种设计提供的方法。
第八方面,本申请还提供了一种计算机可读存储介质,用于存储为执行上述第一方面、第一方面的任意一种设计、、第二方面、第二方面的任意一种设计、第三方面、第三方面的任意一种设计的功能所用的计算机软件指令,其包含用于执行上述第一方面、第一方面的任意一种设计、、第二方面、第二方面的任意一种设计、第三方面、第三方面的任意一种设计的方法所设计的程序。
第九方面,本申请提供一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行第一方面和/或第一方面的任一种设计、和/或第二方面、和/或第二方面的任意一种设计、和/或第三方面、和/或第三方面的任意一种设计所述的方法。
附图说明
图1为本申请提供的一种网络架构示意图;
图2为本申请提供的一种新的网络架构示意图;
图3为本申请提供的一种移动边缘计算方法流程图;
图4为本申请提供的另一种移动边缘计算方法流程图;
图5为本申请提供的一种移动边缘计算装置示意图;
图6为本申请提供的一种装置的硬件结构图。
具体实施方式
下面将结合附图对本申请实施例作进一步地详细描述。
本申请实施例提供一种移动边缘计算方法及装置,用于解决现有技术中用户设备在移动切换时,资源浪费的问题。其中,方法和设备是基于同一发明构思的,由于方法及设备解决问题的原理相似,因此设备与方法的实施可以相互参见,重复之处不再赘述。
随着移动智能设备数量的持续增长,计算业务呈现多样化、大量化的发展趋势,要求移动设备支持更多高计算量、低延迟要求的应用,传统的云计算技术已经难以满足日益增长的业务需求,于是,欧洲电信标准化协会(ETSI)提出了移动边缘计算(mobile edge computing,MEC)的概念,它是将计算能力下沉到分布式基站,在移动网络的边缘提供近似云端计算、存储和处理的能力。MEC作为第五代移动通信(5-generation,5G)网络体系架构演进的关键技术,可满足系统对于吞吐量、时延、网络可伸缩性和智能化等多方面 要求。MEC可以理解为边缘式的大数据处理平台,即把传统的数据中心切割成各种小型数据中心后放置到网络的边缘节点(服务器),以期更靠近用户,为用户提供更快的服务和达到更好的网络性能。然而,由于MEC引入了大量的边缘节点,增加了网络的复杂程度,实现网络的灵活控制也成为了亟待解决的问题。目前采用软件定义网络(softwaredefined networking,SDN)实现网络的灵活配置。其中,SDN是一种新型的网络体系架构,通过将转发面与控制面分离,并采用集中式的控制面的方式,极大的提高了网络的灵活性。具体的,上述控制面和转发面分离的网络架构模型如图1所示,在控制面上,包含无线接入网(radio access network,RAN)控制面、网关控制面、移动性管理实体(mobility management entity,MME)和SDN控制器。
在现有MEC技术中,考虑用户在移动切换时,MEC服务器会产生迁移,为了保证业务的连续性,采用的方法是根据在云端收集到的用户历史位置记录,在云端预测用户下一个时刻的位置,根据预测结果和用户所需计算资源、虚拟化功能寻找符合条件的新的MEC服务器,预先在新MEC服务器配置好新的虚拟机(virtual machine,VM)。当用户切换后,检测到配置的新的虚拟机可用,将对应的互联网协议(internet protocol,IP)地址和端口号发送给用户,使新的虚拟机为用户进行服务。但现有技术的方法的缺点在于根据记录在云端的用户历史位置预测用户下一时刻的位置,预测的准确性没有办法保证,会发生预测错误,当预测错误时会创建多余的虚拟机,从而产生资源浪费。特别是在大量用户同时使用MEC应用服务的时候,这样的资源浪费会导致一部分用户无法使用MEC应用服务,从而造成用户体验下降。
以下,对本申请中的部分用语进行解释说明,以便使本领域技术人员理解。
1)用户设备(user equipment,UE),又称之为终端设备、移动台(mobile station,MS)、移动终端(mobile terminal,MT)等,是一种向用户提供语音和/或数据连通性的设备,例如,具有无线连接功能的手持式设备、车载设备等。目前,一些终端的举例为:手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device,MID)、可穿戴设备,虚拟现实(virtual reality,VR)设备、增强现实(augmented reality,AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等,本申请中的UE可以为高可靠低时延通信(ultra-reliability low latency communication,URLLC)UE。
2)无线接入网(radio access network,RAN)节点(或设备),是网络中将终端设备接入到无线网络的设备。网络设备为无线接入网中的节点,又可以网络设备,还可以称为基站(basestation,BS)。目前,一些网络设备的举例为:gNB、传输接收点(transmission reception point,TRP)、演进型节点B(evolved Node B,eNB)、无线网络控制器(radio network controller,RNC)、节点B(Node B,NB)、基站控制器(base station controller,BSC)、基站收发台(base transceiver station,BTS)、家庭基站(例如,home evolved NodeB,或home Node B,HNB)、基带单元(base band unit,BBU),或无线保真(wireless fidelity,Wifi)接入点(access point,AP)等。另外,在一种网络结构中,所述网络设备可以包括集中单元(centralized unit,CU)节点和分布单元(distributed unit,DU)节点。这种结构将长期演进(long term evolution,LTE)系统中eNB的协议层拆分开,部分协议层的功能放在CU 集中控制,剩下部分或全部协议层的功能分布在DU中,由CU集中控制DU。
3)流表,存储用户设备的业务报文的处理和转发的规则,其中,流表中的每条流表项通常包括三部分:匹配字段的取值、处理动作和统计数据。具体的,匹配字段规定了数据包包头部分或全部字段的取值.转发面接收到数据包后,从数据包包头部分提取各字段的取值,然后与流表中所有流表项的匹配字段的取值匹配,得到能够成功匹配的流表项。处理动作规定了如何对成功匹配的数据包的处理,选项包括从某个端口转发、丢弃、修改包头部分字段的取值等。统计数据记录了由每条流表处理的数据包的数量、总的字节数等信息。
4)多个,是指两个或两个以上。
另外,需要理解的是,在本申请的描述中,“第一”、“第二”等词汇,仅用于区分描述的目的,而不能理解为指示或暗示相对重要性,也不能理解为指示或暗示顺序。
本申请实施例中,相比于现有技术增加了管理MEC服务器的虚拟化资源的MEC管理网元,上述MEC管理网元根据接收到的RAN控制面发送的MEC虚拟化资源的请求,在MEC服务器的虚拟化资源上为用户设备创建新的VM,在所述新的VM上继续为用户设备提供MEC应用服务,并且上述MEC管理网元向所述目标RAN控制面发送所述新的VM的第一信息,这样用户设备在使用MEC应用过程中发生切换时,能在保证业务连续性前提下自动切换到目标RAN侧的新的VM上,降低传输时延,提高用户体验。
在本申请实施例中,提出了一种移动边缘计算方法,该方法基于本申请提出的一种新的实现MEC的移动通信网络架构,具体示意图如图2所示,在图1架构的基础上增加了MEC管理网元,上述MEC管理网元用来管理MEC服务器上的虚拟化计算资源。具体的,图2中包括:SDN控制器、MEC管理网元、RAN控制面、MME和网关控制面、OpenFlow交换机。其中,RAN控制面中包括RAN控制面网元,网关控制面中包括网关控制面网元,上述SDN控制器负责管理数据包的处理规则,将流表及相关配置通过SDN控制器和交换机之间的控制链路转发;MEC管理网元负责管理MEC服务器上的虚拟化资源、维护虚拟化资源的工作状态和启动新旧VM间的数据迁移等,其中,MEC管理网元会周期性监控MEC服务器的资源使用情况,例如已使用资源和/或剩余资源,上述资源是指磁盘容量、内存、CPU等,同时上述MEC管理网元向MEC服务器订阅VM工作状态事件,当MEC服务器上VM状态发生改变时,会发送状态改变通知给MEC管理网元;RAN控制面负责解析用户发送的MEC应用服务请求消息和封装相应的响应消息,并通知MEC管理网元和SDN控制器执行提供MEC应用服务相关的流程,RAN转发面包含了面向空口的数据处理(分组数据汇聚协议(packet data convergence protocol,PDCP)、无线链路控制(radio link control,RLC)、介质控制访问(media access control,MAC)和物理层(physical,PHY))以及面向核心网侧的数据处理;MME负责移动性管理;网关控制面负责选择合适的网关转发面来转发上下行数据;OpenFlow交换机负责根据流表对用户设备的业务报文进行处理和转发。
基于图2提出的一种新的实现MEC的移动通信网络架构,在上述新网络结构下用户设备首次发起MEC应用服务请求时,为用户设备提供MEC应用服务的具体流程如图3所示,下面结合附图3对本申请提供的一种移动边缘计算方法进行具体说明。包括:
步骤301、用户设备UE向RAN转发面发送控制信令消息。
所述UE还可以通过所述控制信令消息向MEC管理网元请求MEC应用服务,其中, 所述控制信令消息内容包括UEID、小区(cell)ID和UE的MEC计算资源需求信息,UE的MEC计算资源需求信息可以但不限于包括所需要的中央处理机(central processing unit,CPU)资源大小、磁盘空间和内存大小等信息。上述控制信令消息可以封装在第一无线资源控制(radioresource control,RRC)消息中进行传输,可以在上述第一RRC消息中添加类型字段,并设置该类型字段的值具体为MEC请求类型,用于表示该RRC消息是关于MEC应用服务请求的消息。
步骤302、上述RAN转发面将接收到的所述控制信令消息,通过Packet in消息发送给SDN控制器。
举例说明:所述RAN转发面在已配置在交换机中的第一流表,对上述控制信令消息进行匹配,即通过该第一流表确定出将所述控制信令消息通过Packet in消息发送给SDN控制器,具体匹配域为接收控制信令消息对应端口号。
步骤303、上述SDN控制器接收到上述控制信令消息后,转发给RAN控制面。
步骤304、上述RAN控制面接收到上述控制信令消息后,根据RRC消息类型字段,解析出该控制信令消息是MEC应用服务请求消息。
步骤305、上述RAN控制面将上述控制信令消息转发给MEC管理网元。
步骤306、上述MEC管理网元接收到上述控制信令请求消息后,根据当前MEC服务器上资源使用情况,判断该用户设备是否存在对应的VM,若不存在,则为该用户设备创建新的VM。
步骤307、上述MEC管理网元向RAN控制面发送上述新的VM的信息。
具体的,上述新的VM的信息可以包括新的VM的ID、新的VM的IP和端口号等。
步骤308、上述RAN控制面向SDN控制器发送配置第二流表请求,以及配置RAN转发面的无线协议栈消息。
具体的,上述配置第二流表请求包括UEIP、新的VM的IP和端口号等。
步骤309、上述SDN控制器通过Flow mod消息向RAN转发面发送上述第二流表。
一种可能实现方式中,上述第二流表为上述交换机配置的,可以为两条流表,两条流表分为上行流表和下行流表,其中,上行流表用于将上述UE上传的MEC应用服务数据转发给新的VM;下行流表用于将来新的VM数据返回给上述UE。
步骤310、上述SDN控制器向RAN转发面发送Packet out消息。
其中,上述Packet out消息中包括配置RAN转发面的无线协议栈消息。
步骤311、上述SDN控制器向RAN控制面发送配置完成消息,用于告知上述RAN控制面上述第二流表以及配置RAN转发面的无线协议栈消息已经配置完成。
步骤312、上述RAN控制面向MEC管理网元发送新的VM的状态信息查询消息,其中,该新的VM的状态信息查询消息包括新的VM的ID。
步骤313、上述MEC管理网元向上述RAN控制面发送新的VM的状态信息。
示例性的,上述新的VM的状态信息包括新的VM的工作状态,新的VM的工作状态包括启动状态和正常状态。
步骤314、上述RAN控制面接收到上述MEC管理网元发送的新的VM的状态信息。
若确定新的VM的工作状态为启动状态,则继续等待MEC管理网元下一次发送新的VM的状态信息;若确定新的VM的工作状态为正常状态,则封装发送给UE的第二RRC消息,其中,该第二RRC消息中类型字段值设为MEC响应类型。
步骤315、上述RAN控制面将上述第二RRC消息经RAN转发面发给UE。
具体的,该第二RRC消息中还包括新的VM的IP和端口号等。
步骤316、上述用户设备向上述RAN转发面发送MEC应用服务相关的数据。
步骤317、上述RAN转发面根据上述第二流表中的规则,将上述MEC应用服务相关的数据转发给MEC服务器上新的VM。
本申请实施例中,通过新增的MEC管理网元在MEC服务器上为用户设备建立新的VM,实现用户的MEC应用服务请求,通过对RRC协议的扩展,使用户设备发送的MEC应用服务请求消息可以被正确解析,通过RAN控制面解析用户MEC应用服务请求,执行相关流程,通过上述改进,可以灵活高效的为用户设备提供MEC应用服务。
当UE正在使用MEC应用服务时,如果需要从一个基站切换到另一个基站,如何既保证业务的连续性又避免现有技术中涉及的资源浪费,是本申请需要解决的最重要的问题,在图2提出的新的网络架构的基础上实现UE在使用MEC应用服务时从一个基站切换到另一个基站,UE在切换基站前MEC管理网元在MEC服务器上为UE创建一个新的VM,即保证业务的连续性又避免了现有技术中的资源案浪费。下面通过一个完整的实施例对本申请提出的一种移动边缘计算方法方法进行详细的说明,其中,源RAN控制面和源RAN转发面属于UE切换前的基站,目标RAN控制面和目标RAN转发面属于UE切换后的基站,具体步骤如图4所示:
步骤401、源RAN控制面接收到UE发送的测量报告,决策执行切换。
示例性的,上述测量报告在UE发出后,经源RAN转发面和SDN控制器转发给上述源RAN控制面。
步骤402、上述源RAN控制面向目标RAN控制面发送切换请求消息。
其中,上述切换请求消息中包括MEC上下文信息,该MEC上下文信息具体为源RAN侧MEC的旧的VM的IP、端口号、UE的MEC计算资源需求等。
步骤403、上述目标RAN控制面根据上述切换请求消息,向移动边缘计算MEC管理网元发送MEC虚拟化资源的请求。
其中,所述MEC虚拟化资源的请求中包括所述用户设备的MEC计算资源需求,具体包括CPU、内存、磁盘空间等。
步骤404、上述MEC管理网元根据上述MEC虚拟化资源的请求,并根据监测到的MEC服务器上的资源使用情况在MEC服务器上为上述用户设备创建新的虚拟机VM。
具体的,上述新的VM为上述用户设备切换后在上述目标RAN侧使用的VM。
步骤405、上述MEC管理网元向上述目标RAN控制面发送上述新的VM的第一信息。
一种可能的实现方式中,上述第一信息包括所述新的VM的ID,上述第一消息还包括信道VM的IP、端口号等。
步骤406、上述目标RAN控制面向软件定义网络SDN控制器发送切换命令消息。
其中,上述切换命令消息包括所述目标RAN的IP地址,所述切换命令消息用于指示用户设备从源RAN侧切换到目标RAN侧。
步骤407、上述SDN控制器向源RAN转发面发送第一流表(Flow mod)消息。
具体的,上述第一流表消息用于指示将切换前从旧的VM接收的数据转发给目标RAN侧对应的新的虚拟机VM、以及从上述目标RAN控制面接收到用户设备UE发送的MEC应用数据包转发至源RAN侧对应的旧的VM。
步骤408、上述SDN控制器向目标RAN转发面发送第二流表消息。
其中,上述第二流表消息用于指示将切换前未传完的MEC应用数据转发给源RAN侧对应的旧的VM、以及将源RAN侧对应旧的VM的数据转发给UE。
步骤409、上述SDN控制器向上述目标RAN控制面发送切换命令响应消息。
步骤410、上述SDN控制器向上述UE发送第一packet out消息。
其中,所述第一packet out消息携带RRC reconf消息数据,通过RAN转发面将所述RRC reconf消息发送给所述UE,所述RRC reconf消息包括无线资源控制RRC参数配置信息,目标RAN转发面交换机收到上述第一Packet out消息,按照该消息中指定的端口发送给PDCP实体,再发送给UE。
步骤411、上述目标RAN控制面向上述MEC管理网元发送MEC VM工作状态查询请求。
其中,上述MEC VM工作状态查询请求中包括新的VM的ID。
步骤412、上述MEC管理网元根据所述新的VM的ID,查询所述新的VM的状态信息,上述MEC管理网元向所述目标RAN控制面发送所述新的VM的状态信息。
其中,所述状态信息包括启动状态和正常状态,MEC管理网元通过订阅VM的状态事件获取MEC服务器上的VM状态信息,当MEC服务器上的VM的工作状态发送变化时,上报给上述MEC管理网元,或者定时向上述MEC管理网元上报工作状态,具体如何上报本申请实施例不做限定,上述VM的状态事件包括所述新的VM的ID与VM的状态信息的对应关系。
步骤413、上述目标RAN控制面根据接收到的新的VM的状态信息,判断是否执行下一步。具体的,若判断上述新的VM是启动状态,则不做处理;若判断上述VM是正常状态,则执行下一步骤。
步骤414、上述目标RAN控制面向SDN控制器发送数据转发消息。
示例性的,所述数据转发消息包括所述旧的VM的IP地址以及所述新的VM的IP地址,用于指示所述SDN控制器将发给所述旧的VM的数据转发给所述新的VM。
步骤415、上述SDN控制器向所述新的VM和上述旧的VM间的交换机发送流表消息,配置流表。
其中,上述流表消息用于指示上述UE将未上传的MEC应用数据发送到新的VM上进行处理,以及将来自新的VM的数据发送给上述UE。
步骤416、上述SDN控制器向所述目标RAN控制面发送流表更新完成消息。具体的,上述流表更新完成消息用于通知上述目标RAN控制面可以通知上述MEC管理网元进行数据迁移。
步骤417、上述目标RAN控制面向上述MEC管理网元发送数据迁移消息。
一种可能的实现方式中,上述数据迁移消息用于指示上述MEC服务器使用上述新的VM代替所述旧的VM,进行上述用户设备和目标RAN间的数据交互。
步骤418、上述MEC管理网元将所述数据迁移消息发送给所述MEC服务器,指示所述MEC服务器使用所述新的VM代替所述旧的VM,进行所述用户设备和目标RAN间的数据交互。
步骤419、上述目标RAN控制面向上述SDN控制器发送更新RAN转发面流表信息。
具体用于指示所述SDN控制器指示目标RAN转发面转发所述用户设备与所述新的 VM间的数据。
步骤420、上述SDN控制器向上述目标RAN转发面发送上述第三流表消息。
具体的,SDN控制器发送上述第三流表消息给目标RAN转发面交换机,用于配置两条流表,分别为上行流表,用于接收切换前未上传完的MEC应用数据转发给新的VM;下行流表,将来自新的VM的数据转发给UE。
步骤421、上述SDN控制器向上述源RAN转发面发送第二packet out消息,其中,上述第二packet out消息用于指示用户设备发送给上述旧的VM的数据已传输完成。
本申请实施例中,相比于现有技术增加了管理MEC服务器的虚拟化资源的MEC管理网元,上述MEC管理网元根据接收到的RAN控制面发送的MEC虚拟化资源的请求,在MEC服务器的虚拟化资源上为用户设备创建新的VM,在所述新的VM上继续为用户设备提供MEC应用服务,并且上述MEC管理网元向所述目标RAN控制面发送所述新的VM的第一信息,这样用户设备在使用MEC应用过程中发生切换时,能在保证业务连续性前提下自动切换到目标RAN侧的新的VM上,降低传输时延,提高用户体验。
基于与方法实施例同样的发明构思,本申请还提供了一种移动边缘计算装置示意图,如图5所示,包括收发单元501和处理单元502,其中,收发单元501用于接收目标无线接入网RAN控制面发送的MEC虚拟化资源的请求,其中,所述目标RAN控制面属于用户设备切换后的目标RAN,所述MEC虚拟化资源的请求中包括所述用户设备的MEC计算资源需求;处理单元502用于根据所述MEC虚拟化资源的请求在MEC服务器上为所述用户设备创建新的虚拟机VM,所述新的VM为所述用户设备切换后在所述目标RAN侧使用的VM;收发单元501还用于向所述目标RAN控制面发送所述新的VM的第一信息,其中,所述第一信息包括所述新的VM的ID。在一种可能的实现方式中,收发单元501和处理单元502还分别用于执行上述实施例中MEC管理网元所需要执行的操作。
本申请实施例中,还提供了两种移动边缘计算装置示意图,与图5的示意图相同,但分别表示RAN控制面和SDN控制器的结构,具体的,收发单元501和处理单元502还分别用于执行上述实施例中RAN控制面和SDN控制器所需要执行的操作。
本申请实施例中对模块的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,另外,在本申请各个实施例中的各功能模块可以集成在一个处理器中,也可以是单独物理存在,也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现,也可以采用软件功能模块的形式实现。
其中,集成的模块既可以采用硬件的形式实现时,如图6所示,一种装置可以包括处理器602。上述处理单元502对应的实体的硬件可以为处理器602。处理器602,可以是一个中央处理模块(英文:central processing unit,简称CPU),或者为数字处理模块等等。所述设备还可以包括通信接口601(可以为收发器),上述收发单元501对应的硬件实体可以为通信接口601。该设备还可以包括:存储器603,用于存储处理器602执行的程序。存储器603可以是非易失性存储器,比如硬盘(英文:hard disk drive,缩写:HDD)或固态硬盘(英文:solid-state drive,缩写:SSD)等,还可以是易失性存储器(英文:volatile memory),例如随机存取存储器(英文:random-access memory,缩写:RAM)。存储器603是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质,但不限于此。
处理器602用于执行存储器603存储的程序代码,具体用于执行图3、图4所示实施 例所述的方法。可以参见图3、图4所示实施例所述的方法,本申请在此不再赘述。
本申请实施例中不限定上述通信接口601、处理器602以及存储器603之间的具体连接介质。本申请实施例在图6中以存储器603、处理器602以及通信接口601之间通过总线604连接,总线在图6中以粗线表示,其它部件之间的连接方式,仅是进行示意性说明,并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示,图6中仅用一条粗线表示,但并不表示仅有一根总线或一种类型的总线。
本发明实施例还提供了一种计算机可读存储介质,用于存储为执行上述处理器所需执行的计算机软件指令,其包含用于执行上述处理器所需执行的程序。
本领域内的技术人员应明白,本申请的实施例可提供为方法、系统、或计算机程序产品。因此,本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请中,“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B的情况,其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。
本申请中,“至少一个”是指一个或者多个,“多个”是指两个或两个以上。“以下至少一项(个)”或其类似表达,是指的这些项中的任意组合,包括单项(个)或复数项(个)的任意组合。例如,“a,b,或c中的至少一项(个)”,或,“a,b,和c中的至少一项(个)”,均可以表示:a,b,c,a-b(即a和b),a-c,b-c,或a-b-c,其中a,b,c分别可以是单个,也可以是多个。
应理解,在本申请的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,部分或全部步骤可以并行执行或先后执行,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定。
本申请是参照根据本申请的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然,本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样,倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包含这些改动和变型在内。

Claims (30)

  1. 一种移动边缘计算方法,其特征在于,所述方法包括:
    移动边缘计算MEC管理网元接收目标无线接入网RAN控制面发送的MEC虚拟化资源的请求,其中,所述目标RAN控制面属于用户设备切换后的目标RAN,所述MEC虚拟化资源的请求中包括所述用户设备的MEC计算资源需求;
    所述MEC管理网元根据所述MEC虚拟化资源的请求在MEC服务器上为所述用户设备创建新的虚拟机VM,所述新的VM为所述用户设备切换后在所述目标RAN侧使用的VM;
    所述MEC管理网元向所述目标RAN控制面发送所述新的VM的第一信息,其中,所述第一信息包括所述新的VM的ID。
  2. 如权利要求1所述的方法,其特征在于,所述方法还包括:
    所述MEC管理网元接收所述目标RAN控制面发送的MEC VM工作状态查询请求,其中,所述MEC VM工作状态查询请求中包括新的VM的ID;
    所述MEC管理网元根据所述新的VM的ID,查询所述新的VM的状态信息,其中,所述状态信息包括启动状态和正常状态;
    所述MEC管理网元向所述目标RAN控制面发送所述新的VM的状态信息。
  3. 如权利要求2所述的方法,其特征在于,所述MEC管理网元根据所述新的VM的ID,查询所述新的VM的状态信息之前,该方法还包括:
    所述MEC管理网元接收所述MEC服务器上报的VM的状态事件,所述VM的状态事件包括所述新的VM的ID与VM的状态信息的对应关系。
  4. 如权利要求1-3任一所述的方法,其特征在于,所述方法还包括:
    所述MEC管理网元接收所述目标RAN控制面发送的数据迁移消息,其中,所述数据迁移消息用于指示所述MEC服务器使用所述新的VM代替旧的VM,进行所述用户设备和目标RAN间的数据交互,其中,所述旧的VM为所述用户设备切换前在源RAN侧使用的VM;
    所述MEC管理网元将所述数据迁移消息发送给所述MEC服务器,指示所述MEC服务器使用所述新的VM代替所述旧的VM,进行所述用户设备和目标RAN间的数据交互。
  5. 一种移动边缘计算方法,其特征在于,所述方法包括:
    目标无线接入网RAN控制面接收源RAN控制面发送的切换请求消息,其中,所述切换请求消息中包括用户设备的MEC计算资源需求,其中,所述目标RAN控制面属于所述用户设备切换后的目标RAN,所述源RAN控制面属于所述用户设备切换前的源RAN;
    所述目标RAN控制面根据所述切换请求消息,向移动边缘计算MEC管理网元发送MEC虚拟化资源的请求,其中,所述MEC虚拟化资源的请求中包括所述用户设备的MEC计算资源需求;
    所述目标RAN控制面接收所述MEC管理网元发送的新的VM的第一信息,其中,所述新的VM是所述MEC管理网元根据所述MEC虚拟化资源的请求在MEC服务器上为用户设备创建的新的VM,所述新的VM为所述用户设备切换后在所述目标RAN侧使用的VM,所述第一信息包括所述新的VM的ID。
  6. 如权利要求5所述的方法,其特征在于,在所述目标RAN控制面接收所述MEC 管理网元发送的新的VM的第一信息之后,所述方法还包括:
    所述目标RAN控制面向软件定义网络SDN控制器发送切换命令消息,其中,所述切换命令消息包括所述目标RAN的IP地址,所述切换命令消息用于指示用户设备从源RAN侧切换到目标RAN侧;
    所述目标RAN控制面接收所述SDN控制器发送的切换命令响应消息。
  7. 如权利要求5所述的方法,其特征在于,所述方法还包括:
    所述目标RAN控制面向所述MEC管理网元发送MEC VM工作状态查询请求,其中,所述MECVM工作状态查询请求中包括新的VM的ID;
    所述目标RAN控制面接收所述MEC管理网元发送所述新的VM的状态信息,其中,所述状态信息包括启动状态和正常状态。
  8. 如权利要求7所述的方法,其特征在于,若所述状态信息为正常状态,则所述目标RAN控制面接收所述MEC管理网元发送所述新的VM的状态信息之后,该方法还包括:
    所述目标RAN控制面向SDN控制器发送数据转发消息,其中,所述数据转发消息用于指示所述SDN控制器将发给所述旧的VM的数据转发给所述新的VM。
  9. 如权利要求8所述的方法,其特征在于,所述目标RAN控制面向SDN控制器发送数据转发消息之前,还包括:
    所述目标RAN控制面接收所述SDN控制器发送的流表更新完成消息,所述流表更新完成消息用于通知所述目标RAN控制面通知所述MEC管理网元进行数据迁移。
  10. 如权利要求5-9任一所述的方法,其特征在于,该方法还包括:
    所述目标RAN控制面向所述MEC管理网元发送数据迁移消息,其中,所述数据迁移消息用于指示所述MEC服务器使用所述新的VM代替旧的VM,进行所述用户设备和目标RAN间的数据交互,其中,所述旧的VM为所述用户设备切换前在源RAN侧使用的VM;
    所述目标RAN控制面向所述SDN控制器发送更新RAN转发面流表信息,用于指示所述SDN控制器指示目标RAN转发面转发所述用户设备与所述新的VM间的数据。
  11. 一种移动边缘计算方法,其特征在于,所述方法包括:
    软件定义网络SDN控制器接收目标RAN控制面发送的切换命令消息,其中,所述切换命令消息包括所述目标RAN的IP地址,所述切换命令消息用于指示用户设备从源RAN侧切换到目标RAN侧;
    所述SDN控制器向所述目标RAN控制面发送切换命令响应消息。
  12. 如权利要求11所述的方法,其特征在于,所述SDN控制器向所述目标RAN控制面发送切换命令响应消息之后,该方法还包括:
    所述SDN控制器向用户设备UE通过目标RAN转发面发送RRC reconf消息,其中,所述RRC reconf消息包括无线资源控制RRC参数配置信息。
  13. 如权利要求11所述的方法,其特征在于,该方法还包括:
    所述SDN控制器接收所述目标RAN控制面发送的数据转发消息,其中,所述数据转发消息用于指示所述SDN控制器将发给旧的VM的数据转发给新的VM,其中,所述旧的VM为所述用户设备切换前在源RAN侧使用的VM,所述新的VM为所述用户设备切换后在所述目标RAN侧使用的VM。
  14. 如权利要求13所述的方法,其特征在于,该方法还包括:
    所述SDN控制器向所述新的VM和所述旧的VM间的交换机发送流表消息,所述流表消息用于所述交换机指示所述UE将未上传的MEC应用数据发送到新的VM上进行处理,以及将来自新的VM的数据发送给所述UE。
  15. 如权利要求14所述的方法,其特征在于,该方法还包括:
    所述SDN控制器向所述目标RAN控制面发送流表更新完成消息,用于通知所述目标RAN控制面可以通知所述MEC管理网元进行数据迁移。
  16. 如权利要求15所述的方法,其特征在于,该方法还包括:
    所述SDN控制器接收所述目标RAN控制面发送的更新RAN转发面流表消息,用于指示所述SDN控制器指示目标RAN转发面转发所述用户设备与所述新的VM间的数据。
  17. 一种移动边缘计算装置,其特征在于,所述装置包括:
    收发单元,用于接收目标无线接入网RAN控制面发送的MEC虚拟化资源的请求,其中,所述目标RAN控制面属于用户设备切换后的目标RAN,所述MEC虚拟化资源的请求中包括所述用户设备的MEC计算资源需求;
    处理单元,用于根据所述MEC虚拟化资源的请求在MEC服务器上为所述用户设备创建新的虚拟机VM,所述新的VM为所述用户设备切换后在所述目标RAN侧使用的VM;
    所述收发单元,用于向所述目标RAN控制面发送所述新的VM的第一信息,其中,所述第一信息包括所述新的VM的ID。
  18. 如权利要求17所述的装置,其特征在于,所述收发单元还用于:
    接收所述目标RAN控制面发送的MEC VM工作状态查询请求,其中,所述MEC VM工作状态查询请求中包括新的VM的ID;
    所述处理单元还用于,根据所述新的VM的ID,查询所述新的VM的状态信息,其中,所述状态信息包括启动状态和正常状态;
    所述收发单元还用于,向所述目标RAN控制面发送所述新的VM的状态信息。
  19. 如权利要求18所述的装置,其特征在于,所述处理单元根据所述新的VM的ID,查询所述新的VM的状态信息之前,所述收发单元还用于:
    接收所述MEC服务器上报的VM的状态事件,所述VM的状态事件包括所述新的VM的ID与VM的状态信息的对应关系。
  20. 如权利要求17-19任一所述的装置,其特征在于,所述收发单元还用于:
    接收所述目标RAN控制面发送的数据迁移消息,其中,所述数据迁移消息用于指示所述MEC服务器使用所述新的VM代替旧的VM,进行所述用户设备和目标RAN间的数据交互,其中,所述旧的VM为所述用户设备切换前在源RAN侧使用的VM;
    所述收发单元还用于,将所述数据迁移消息发送给所述MEC服务器,指示所述MEC服务器使用所述新的VM代替所述旧的VM,进行所述用户设备和目标RAN间的数据交互。
  21. 一种移动边缘计算装置,其特征在于,所述装置包括:
    收发单元,用于接收源RAN控制面发送的切换请求消息,其中,所述切换请求消息中包括用户设备的MEC计算资源需求,其中,所述目标RAN控制面属于所述用户设备切换后的目标RAN,所述源RAN控制面属于所述用户设备切换前的源RAN;
    处理单元,根据所述切换请求消息,通过所述收发单元向移动边缘计算MEC管理网元发送MEC虚拟化资源的请求,其中,所述MEC虚拟化资源的请求中包括所述用户设备 的MEC计算资源需求;
    所述收发单元,接收所述MEC管理网元发送的新的VM的第一信息,其中,所述新的VM是所述MEC管理网元根据所述MEC虚拟化资源的请求在MEC服务器上为用户设备创建的新的VM,所述新的VM为所述用户设备切换后在所述目标RAN侧使用的VM,所述第一信息包括所述新的VM的ID。
  22. 如权利要求21所述的装置,其特征在于,在所述收发单元接收所述MEC管理网元发送的新的VM的第一信息之后,所述收发单元还用于:
    向软件定义网络SDN控制器发送切换命令消息,其中,所述切换命令消息包括所述目标RAN的IP地址,所述切换命令消息用于指示用户设备从源RAN侧切换到目标RAN侧;
    接收所述SDN控制器发送的切换命令响应消息。
  23. 如权利要求21所述的装置,其特征在于,所述收发单元还用于:
    向所述MEC管理网元发送MEC VM工作状态查询请求,其中,所述MEC VM工作状态查询请求中包括新的VM的ID;
    接收所述MEC管理网元发送所述新的VM的状态信息,其中,所述状态信息包括启动状态和正常状态。
  24. 如权利要求23所述的装置,其特征在于,若所述状态信息为正常状态,则所述收发单元接收所述MEC管理网元发送所述新的VM的状态信息之后,所述收发单元还用于:
    向SDN控制器发送数据转发消息,其中,所述数据转发消息用于指示所述SDN控制器将发给所述旧的VM的数据转发给所述新的VM。
  25. 一种移动边缘计算装置,其特征在于,所述装置包括:
    收发单元,用于接收目标RAN控制面发送的切换命令消息,其中,所述切换命令消息包括所述目标RAN的IP地址,所述切换命令消息用于指示用户设备从源RAN侧切换到目标RAN侧;
    所述收发单元还用于,向所述目标RAN控制面发送切换命令响应消息。
  26. 如权利要求25所述的装置,其特征在于,所述收发单元向所述目标RAN控制面发送切换命令响应消息之后,所述收发单元还用于:
    向用户设备UE通过目标RAN转发面发送RRC reconf消息,其中,所述RRC reconf消息包括无线资源控制RRC参数配置信息。
  27. 如权利要求26所述的装置,其特征在于,所述收发单元还用于:
    接收所述目标RAN控制面发送的数据转发消息,其中,所述数据转发消息包括所述旧的VM的IP地址以及所述新的VM的IP地址,用于指示所述SDN控制器将发给旧的VM的数据转发给新的VM,其中,所述旧的VM为所述用户设备切换前在源RAN侧使用的VM,所述新的VM为所述用户设备切换后在所述目标RAN侧使用的VM。
  28. 如权利要求27所述的装置,其特征在于,所述收发单元还用于:
    向所述新的VM和所述旧的VM间的交换机发送流表消息,所述流表消息用于所述交换机指示所述UE将未上传的MEC应用数据发送到新的VM上进行处理,以及将来自新的VM的数据发送给所述UE。
  29. 一种装置,其特征在于,包括处理器、存储器和通信接口;
    所述存储器,存储有计算机程序;
    所述处理器,用于调用并执行所述存储器中存储的计算机程序,通过所述通信接口来实现如权利要求1至16中任一项所述的方法。
  30. 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质存储有计算机指令,当所述指令在计算机上运行时,使得计算机执行如权利要求1至16任一项所述的方法。
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