WO2018171322A1 - 虚拟网络功能及其实现业务处理的方法、存储介质 - Google Patents

虚拟网络功能及其实现业务处理的方法、存储介质 Download PDF

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Publication number
WO2018171322A1
WO2018171322A1 PCT/CN2018/073642 CN2018073642W WO2018171322A1 WO 2018171322 A1 WO2018171322 A1 WO 2018171322A1 CN 2018073642 W CN2018073642 W CN 2018073642W WO 2018171322 A1 WO2018171322 A1 WO 2018171322A1
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Prior art keywords
vnf
resource
service processing
service
function
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PCT/CN2018/073642
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English (en)
French (fr)
Inventor
陈东华
吴锦花
詹徐周
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中兴通讯股份有限公司
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Publication of WO2018171322A1 publication Critical patent/WO2018171322A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/12—Avoiding congestion; Recovering from congestion
    • H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/12—Shortest path evaluation
    • H04L45/121—Shortest path evaluation by minimising delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/12—Shortest path evaluation
    • H04L45/125—Shortest path evaluation based on throughput or bandwidth
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/20—Hop count for routing purposes, e.g. TTL
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation

Definitions

  • the embodiments of the present application relate to a mobile communication technology, and in particular to a virtual network function and a method and a storage medium for implementing the service processing.
  • FIG. 1 is a schematic structural diagram of a 3GPP Evolved Packet System in the related art.
  • an EGPP Evolved Packet System
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • PDN GW or P-GW Packet Data Network Gateway
  • HSS Home Subscriber Server
  • AAA 3GPP Authentication, Authorization and Accounting
  • PCRF Policy and Charging Rules Function
  • the MME is used for control plane related operations such as mobility management, non-access stratum signaling processing, and user mobility management context management;
  • the S-GW is an access gateway function connected to the E-UTRAN, in the E-UTRAN and The P-GW forwards data and buffers the paging waiting data.
  • the P-GW is a border gateway between the EPS and the PDN, and is used for PDN access and forwarding data between the EPS and the PDN.
  • the PCRF is responsible for the formulation of policy decisions and charging rules, providing gating based on service data flow, quality of service control and charging rules to the GW, and executing the policies and charging rules formulated by the PCRF on the bearer plane.
  • the GW When the bearer is established, the GW performs QoS authorization and gating control according to the rules sent by the PCRF. According to the charging rule sent by the PCRF, the corresponding service data flow charging operation is performed, and the charging may be online charging or offline charging. If it is online charging, it needs to be managed with the Online Charging System (OCS). Off-line billing exchanges relevant billing information with an offline charging system (OFCS, Offline Charging System).
  • OCS Online Charging System
  • OFCS Offline Charging System
  • the interface between the GW and the PCRF is a Gx interface
  • the interface between the OC and the OCS is a Gy interface
  • the interface between the OFCS and the OFCS is a Gz interface.
  • the UE can find a corresponding packet data network (PDN, Packet Data Network) through an Access Point Name (APN), and establish an IP connection access network (IP-CAN, IP Connectivity Access) for accessing the PDN network. Network) The PDN connection of the session.
  • PDN Packet Data Network
  • APN Access Point Name
  • IP-CAN IP Connectivity Access
  • the gateway control plane is highly coupled to the forwarding plane, which is not conducive to the smooth evolution and enhancement of the network.
  • the frequency of the forwarding surface expansion is higher than that of the control plane.
  • the tight coupling causes the control plane to forward and expand synchronously, and the function update period is short, resulting in an increase in the composite cost.
  • Network layer data forwarding is difficult to identify users and service features. It can only be forwarded according to the quality of service (QoS) delivered by the upper layer, resulting in inefficient use of network resources.
  • QoS quality of service
  • the communication network further separates the control functions and forwarding functions in the packet domain gateway to adapt to network development and market application requirements.
  • the architecture includes an S-GW/P-GW and a traffic detection function (TDF in the original EPS architecture).
  • the traffic detection function is divided into two types of functional network elements: the control plane function (CPF, Controller plane function) and the user plane function (UPF, User plane function).
  • the control plane functions of the S-GW, P-GW, and TDF correspond to CPF
  • user plane data function corresponds to UPF.
  • CPF CPF
  • UPF User plane function
  • the CPF is responsible for control plane functions, including load sharing, UPF selection, UE IP address allocation, policy and charging control, and optionally includes the assignment of the user plane address and tunnel identifier of the UPF.
  • the UPF is responsible for user plane related functions, including data flow identification and deep packet parsing, QoS processing and bearer binding, and buffering of downlink paging data.
  • the user plane and the control plane interface of the various functions of the EPS in Figure 1 are respectively connected to the separated CPF and UPF, and the other corresponding interface functions are compared with the original EPS architecture.
  • UPFs After the control is separated from the user, multiple or multiple UPFs can be deployed according to requirements.
  • the network deployment is more flexible. It can support larger capacity and richer application services. It can adopt more efficient and flexible virtual network functions (VNF). , Virtual network function) deploys the network.
  • VNF virtual network functions
  • VNF Virtual network function
  • the processing performance requirements for network data have become particularly prominent. How to support high-throughput services, how to effectively and efficiently share the business processing in the network to the corresponding business processing functions, has become a new network architecture. Technical bottlenecks.
  • the typical VNF deployment architecture is as shown in Figure 3.
  • the load balancing function is deployed before the service processing function, and the service data is offloaded by the load balancing function and forwarded to the optimal service processing function.
  • the network throughput of the load balancing function is limited.
  • the data forwarding between the load balancing function and the service processing function can only be achieved by means of an Ethernet switch and/or a virtual switch, and the data exchange capability becomes a bottleneck.
  • data is forwarded multiple times through the virtual switch, and the delay is large, which not only affects the service experience. For services such as autonomous driving and car networking, which have high latency requirements, it is unable to meet and guarantee the basic needs of business functions.
  • the embodiments of the present application are expected to provide a virtual network function and a method for implementing the service processing, which can ensure the performance of network data processing and support high-throughput services.
  • VNF virtualized network function
  • the resource scheduling function is configured to acquire the VNF service resource capability, and divide the obtained VNF service resource capability into a plurality of unit granular resources; create forwarding routing information for each unit granular resource, and transmit the forwarding routing information corresponding to the divided unit granular resources.
  • an external router or docking device To an external router or docking device;
  • the service processing capability is configured to obtain one or more unit granular resources from the resource scheduling function.
  • the service processing is performed according to the service processing logic selected according to the type of the unit granular resource obtained.
  • the application also provides a method for implementing a virtual network function VNF to implement a service, including:
  • the VNF acquires the VNF service resource capability, and divides the obtained VNF service resource capability into a plurality of unit granular resources;
  • the VNF creates forwarding routing information, and transmits the forwarding routing information corresponding to the divided unit granularity resources to an external router or a docking device.
  • the VNF When receiving the service data of the docking device, the VNF performs the service processing according to the selected service processing logic.
  • the present application also provides a computer readable storage medium storing computer readable instructions; the computer readable instructions being executable to implement the aforementioned VNF method of implementing business processing.
  • the technical solution of the present application includes: the VNF divides the obtained VNF service resource capability into a plurality of unit granular resources; the VNF creates forwarding routing information, and transmits the forwarding routing information corresponding to the divided unit granularity resources to an external router or a docking device; When the service data of the device is docked, the VNF performs business processing according to the selected business processing logic.
  • the technical solution provided by the embodiment of the present application subdivides the VNF service resource into a plurality of unit granular resources, and forwards the routing information according to the unit granularity resource decision, and sends the forwarding routing information to the router or the docking device, and the router Or the docking device performs direct forwarding to the corresponding service processing function according to the obtained forwarding routing information, and implements the load balancing function of the VNF.
  • the occupation of computing resources is reduced; and the external docking device directly sends data to the service processing function, which reduces the occupation of half of the resources of the virtual switch and the physical switch, increases data transmission efficiency, and shortens data transmission and processing.
  • FIG. 1 is a schematic structural diagram of a 3GPP evolved packet system in the related art
  • FIG. 2 is a schematic structural diagram of separating a GW control plane and a user plane in a non-roaming scenario in the related art
  • FIG. 3 is a schematic diagram of a typical VNF deployment architecture in the related art
  • FIG. 4 is a schematic diagram of a VNF deployment architecture according to an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of an embodiment of deploying a VNF according to an embodiment of the present application
  • FIG. 6 is a flowchart of a method for implementing a service processing by a VNF according to an embodiment of the present application
  • FIG. 7 is a schematic flowchart of an embodiment of loading a resource scheduling function and a service processing function in a VNF according to an embodiment of the present application
  • FIG. 8 is a schematic flowchart diagram of an embodiment of implementing flexible contraction of a VNF according to an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of an embodiment of implementing flexible extension of a VNF according to an embodiment of the present application.
  • FIG. 10 is a schematic flowchart diagram of an embodiment of a practical application of a VNF architecture according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a VNF deployment architecture according to an embodiment of the present application. As shown in FIG. 4, the method includes at least: a resource scheduling function, and one or more service processing functions;
  • the resource scheduling function is configured to obtain the VNF service resource capability, and divide the obtained VNF service resource capability into a plurality of unit granular resources; and create forwarding routing information for each unit granular resource according to the interface address of the service processing function of each unit granularity resource. And transmitting the forwarding routing information corresponding to the divided unit granularity resource to an external router or a directly connected docking device;
  • the service processing capability is configured to obtain one or more unit granular resources from the resource scheduling function.
  • the service processing is performed according to the service processing logic selected according to the type of the unit granular resource obtained.
  • the resource scheduling function herein may be an abbreviation of a resource scheduling function entity.
  • the business processing capability can be an abbreviation of the business processing capability entity.
  • These entities correspond to a specific hardware structure.
  • the hardware structure may include a processor and a memory, which is also loaded with computer executable code, which can be implemented by execution of computer executable code.
  • the hardware interface can also include a transceiver coupled to the processor, such as a network interface, etc., for data interaction.
  • the granularity of the unit granularity resource after the division is less than or equal to the capability of the service processing function, that is, each service processing function may acquire one or more unit granular resources.
  • the granularity of the resources that can be processed in a single time or in a single service is determined.
  • the granularity of the unit granular resources after the division is smaller than the service processing function, which can be understood as smaller than the service outgoing function list.
  • the granularity of the resource which can correspond to the size of the resource.
  • the capacity unit of the storage resource corresponding to the granularity of the storage resource; the granularity of the computing resource may correspond to the number of concurrent threads that the computing resource can process, the number of cores of the central processor provided, and the like.
  • the service processing capability acquiring the unit granularity resource includes: the service processing capability is actively requested from the resource scheduling function to obtain the unit granularity resource after the initialization; or the service processing capability receives the unit granular resource actively pushed by the resource scheduling function.
  • a resource management interface is set between the resource scheduling function and the service processing function.
  • the VNF service resource capability includes information such as an external service address and an address pool used by the service.
  • the router or the docking device performs packet identification and forwarding operations according to the forwarding routing information. That is, the router or the docking device performs forwarding according to the obtained forwarding routing information to assist the VNF in performing load balancing function and implementing the load balancing function of the VNF.
  • the VNF provided by the embodiment of the present application subdivides the VNF service resource into a plurality of unit granular resources, and forwards the routing information according to the unit granularity resource decision, and sends the forwarding routing information to the router or the docking device, and the router or The docking device performs direct forwarding to the corresponding service processing function according to the obtained forwarding routing information, and implements the load balancing function of the VNF.
  • the occupation of computing resources is reduced; and the external docking device directly sends data to the service processing function, which reduces the occupation of half of the resources of the virtual switch and the physical switch, increases data transmission efficiency, and shortens data transmission and processing. Path, reducing latency.
  • the resource scheduling function directly performs route management and data distribution (the service processing function directly receives the service data from the outside and completes the data processing or forwarding), and the load balancing function is cancelled relative to the VNF in the related art, thereby avoiding the calculation and
  • the traffic bottleneck and delay of data exchange improve the use efficiency of computing resources, ensure the performance of network data processing, enhance the service experience, and support high-throughput services.
  • the VNF of the embodiment of the present application further supports the elastic scalability of the service processing function.
  • the resource scheduling function is further configured to: when performing the VNF scale out, recover the unit granular resource from the selected service processing function to meet the requirement of the newly opened service processing function, and perform resource reallocation (that is, to be recycled)
  • the unit granularity resource is allocated to the newly added service processing function), and the forwarding routing information is updated and advertised to the corresponding router or the docking device.
  • the service data is directly forwarded to the corresponding service processing function (including the original service processing function and the newly added service processing function);
  • the service processing function is further configured to: perform a flexible backup between each service processing function.
  • the backup mode includes an N-to-M active/standby mode, where the values of N and M are greater than or equal to 1, and N and M are integers.
  • the VNF of the embodiment of the present application supports high reliability of services by performing elastic backup between the service processing functions.
  • the technical solution provided by the embodiment of the present application adds a resource scheduling function, and further satisfies the above-mentioned large-flow high-performance VNF deployment requirements, and further supports the flexible scalability of the VNF, and supports the high reliability of the service.
  • FIG. 5 is a schematic flowchart of an embodiment of deploying a VNF according to an embodiment of the present application. As shown in FIG. 5, the method includes:
  • Step 500 Create a service network platform.
  • VIM Virtual Infrastructure Management
  • the service network plane created by the administrator ensures the correct establishment of the external network connection between the VNF and the VNF.
  • Step 501 Create a resource scheduling function.
  • the administrator creates a resource scheduling function through VIM and adds the network interface of the resource scheduling function to the service network plane.
  • the resource management function establishes an interface with the service processing function through the internal network plane, and establishes an interface with an external router and the docking device through the external network plane;
  • Step 502 The resource scheduling function obtains an interface address from the VIM, and after obtaining the interface address, the resource scheduling function and the external docking device complete the network connection, and the resource scheduling function and the docking device establish a dynamic routing neighbor relationship.
  • the VIM can be passed to the resource scheduling function through the initialization script file, or the resource scheduling module can request the VIM through the Dynamic Host Configuration Protocol (DHCP) interface. Wait.
  • DHCP Dynamic Host Configuration Protocol
  • the resource scheduling function establishes a network connection with the external router/docking device and enables the dynamic routing protocol.
  • the resource scheduling function passes routes through a dynamic routing protocol.
  • the dynamic routing protocol may use Open Shortest Path First (OSPF) or Border Gateway Protocol (BGP).
  • OSPF Open Shortest Path First
  • BGP Border Gateway Protocol
  • Step 503 Create a business processing function.
  • the administrator creates a service processing function through VIM and adds the network interface of the service processing function to the service network plane.
  • the service processing function establishes an interface connection through the internal network plane and the resource scheduling function; the service processing function passes the external network plane and the external The docking device establishes a connection.
  • Step 504 The service processing function obtains the interface address from the VIM, and after obtaining the interface address, the service processing function establishes a network connection with the external docking device; the service processing function can open data communication with the external docking function.
  • the VIM can be passed to the service processing function through the initialization script file, or the service processing function can make a request to the VIM through the DHCP interface.
  • the service processing function may also be started first, but communication cannot be performed after startup, and the resource scheduling function must be waited for after the docking function is completed. Handling business.
  • the VNF service resource is subdivided into a plurality of unit granular resources, and the routing information is forwarded according to the unit granularity resource decision, and the forwarding routing information is sent to the router or the docking.
  • the device and the router or the docking device perform direct transfer to the corresponding service processing function according to the obtained forwarding routing information, thereby implementing the load balancing function of the VNF.
  • the occupation of computing resources is reduced; and the external docking device directly sends data to the service processing function, which reduces the occupation of half of the resources of the virtual switch and the physical switch, increases data transmission efficiency, and shortens data transmission and processing.
  • the resource scheduling function directly performs route management and data distribution (the service processing function directly receives the service data from the outside and completes the data processing or forwarding), and the load balancing function is cancelled relative to the VNF in the related art, thereby avoiding the calculation and
  • the traffic bottleneck and delay of data exchange improve the use efficiency of computing resources, ensure the performance of network data processing, enhance the service experience, and support high-throughput services.
  • the service processing function establishes a network connection with the external router/docking device and enables data communication.
  • FIG. 6 is a flowchart of a method for implementing service processing by a VNF according to an embodiment of the present application. As shown in FIG. 6, the method includes:
  • Step 600 The VNF acquires the VNF service resource capability, and divides the obtained VNF service resource capability into a plurality of unit granular resources.
  • the division of the unit granularity resources may be divided according to the number and capacity of service processing functions expected to be deployed in the VNF, or a more fine-grained division manner may be adopted.
  • the specific division manner is not limited herein, as long as each The business processing functions obtain appropriate business resources and form an effective load balancing effect.
  • the resource scheduling function in the VNF is loaded, and the VNF service resource capability is obtained, and the obtained VNF service resource capability is divided into several unit granular resources.
  • the granularity of the divided unit granularity resource is less than or equal to the capability of a single service processing function, that is, each service processing function may acquire one or more unit granular resources.
  • Step 601 The VNF creates forwarding routing information, and transmits the forwarding routing information corresponding to the divided unit granularity resource to an external router or a directly connected docking device.
  • the resource scheduling function in the VNF creates forwarding routing information for each unit granular resource according to the interface address of the service processing function of the current granularity resource. Specifically, the next hop forwarding address is set for the route, and the next hop forwarding address is set to the interface address of the service processing function where the unit granularity resource is currently located; the resource scheduling function then performs the forwarding route corresponding to the divided unit granularity resource. Information is passed to an external router or directly connected docking device.
  • Step 602 When receiving the service data of the docking device, the VNF performs the service processing according to the selected service processing logic.
  • the service processing function in the VNF obtains one or more unit granular resources from the resource scheduling function, and selects and uses the corresponding service processing logic according to the type of the unit granular resource obtained, so that when the docking function is received, In the case of business data, business processing can be performed according to the selected business processing logic.
  • the service processing capability acquiring the unit granularity resource includes: the service processing capability is actively requested from the resource scheduling function to obtain the unit granularity resource after the initialization; or the service processing capability receives the unit granular resource actively pushed by the resource scheduling function.
  • the method of the embodiment of the present application further includes: the router or the docking device performs a packet identification and forwarding operation according to the forwarding routing information. That is, the router or the docking device performs forwarding according to the obtained forwarding routing information to assist the VNF in performing load balancing function and implementing the load balancing function of the VNF.
  • the method of the embodiment of the present application further includes: deploying the VNF into the network.
  • the specific implementation is shown in Figure 5, and will not be described here.
  • FIG. 7 is a schematic flowchart of an embodiment of a VNF implementation service loading according to an embodiment of the present application.
  • This embodiment describes a VNF deployment architecture, a VNF and a service loading process, and a high-performance service processing process of a VNF and a service according to an embodiment of the present application.
  • the service processing function includes the service processing function 1 and the service processing function 2, as shown in FIG. 7, including:
  • Step 700 After the VNF is initialized, the resource scheduling function is loaded to perform resource acquisition and management on the service processing function.
  • the specific step includes: the resource scheduling function obtains the VNF service resource, such as the service external address, and the address pool used by the service, and divides the obtained VNF or the service resource capacity of the service into several service resources. Resources, and allocate the divided unit granular resources to the corresponding business processing functions. Create corresponding forwarding routing information for each unit granular resource based on the corresponding relationship between the service processing function and the unit granularity resource.
  • VNF service resource such as the service external address, and the address pool used by the service
  • Resources and allocate the divided unit granular resources to the corresponding business processing functions. Create corresponding forwarding routing information for each unit granular resource based on the corresponding relationship between the service processing function and the unit granularity resource.
  • the granularity of the unit granularity resource divided by the resource scheduling function is less than or equal to the capability of each service processing function, that is, each service processing function may acquire one or more unit granular resources.
  • Step 701 In this embodiment, the service processing function 1 actively requests to obtain the unit granularity resource from the resource scheduling function after the initialization; or the resource scheduling function actively pushes the divided unit granularity resource information to the service processing function 1.
  • Step 702 In this embodiment, the service processing function 2 actively requests to obtain the unit granularity resource from the resource scheduling function after the initialization; or the resource scheduling unit actively pushes the corresponding unit granular resource to the service processing function 2.
  • Step 703 The resource scheduling function advertises the forwarding routing information corresponding to the generated unit granularity resource to the corresponding router or the docking device through a dynamic routing protocol, such as OSPF or BGP. Meanwhile, the resource scheduling function is received from an external router or a docking device. External routing information advertised by the other party.
  • a dynamic routing protocol such as OSPF or BGP.
  • Step 704 The resource scheduling function saves the external routing information obtained in step 703, and advertises the external routing information obtained from the docking device to the service processing function 1.
  • Step 705 The resource scheduling function advertises the external routing information obtained by the docking device to the service processing function 2.
  • Step 706 After the forwarding device obtains the forwarding routing information of the related service processing function, the device obtains the received data packet, and when the data packet is the service function data corresponding to the service processing function 1, the forwarding device directly forwards the data according to the forwarding routing information.
  • the data is sent to the service processing function 1; the service processing function 1 performs processing on the message according to the service processing rule.
  • Step 707 After obtaining the forwarding routing information of the related service processing function, the docking device identifies the received data packet, and when the data packet is the service function data corresponding to the service processing function 2, directly forwards the data according to the forwarding routing information.
  • the data is sent to the service processing function 2; the service processing function 2 performs processing on the message according to the service processing rule.
  • the VNF of the embodiment of the present application further supports the elastic scalability of the service processing function.
  • the method of the embodiment of the present application further includes:
  • the resource scheduling function in the VNF recovers part of the granular resources from the selected service processing function to meet the requirements of the newly opened service processing function, and performs resource reallocation (the corresponding unit to be recovered)
  • the granularity resource is allocated to the newly added service processing function, and the forwarding routing information is updated and advertised to the corresponding router or the docking device.
  • the service data is directly forwarded to the corresponding service processing function (including the original service processing function and the newly added service processing function); and/or,
  • the resource scheduling function in the VNF recovers all the unit granular resources from the selected service processing function that needs to perform the VNF elastic contraction, and performs resource reallocation (that is, allocates the corresponding unit granular resources to the rest).
  • the service processing function updates the forwarding routing information and advertises it to the corresponding router or docking device. According to the updated forwarding routing information, the service data will be directly forwarded to the corresponding service processing function (the existing business processing function after the scale in processing).
  • the method of the embodiment of the present application further includes: performing an elastic backup between the service processing functions in the VNF.
  • the backup mode includes an N-to-M active/standby mode, where the values of N and M are greater than or equal to 1, and N and M are integers.
  • the VNF of the embodiment of the present application supports high reliability of services by performing elastic backup between the service processing functions.
  • FIG. 8 is a schematic flowchart of an embodiment of a VNF implementing elastic contraction according to an embodiment of the present disclosure.
  • a VNF deployment architecture according to an embodiment of the present application is described.
  • the VNF and the service are executed according to the elastic rule.
  • the process of elastic shrinkage it is assumed that the resource scheduling function recovers all the unit granular resources from the selected service processing function, and performs resource reallocation; and then allocates the recovered unit granular resources to the required service processing function, and updates the forwarding routing information and then advertises Give the corresponding docking device.
  • the docking device directly forwards the service data to the correct service processing function according to the updated forwarding routing information.
  • the specific implementation is shown in Figure 8, including:
  • Step 800 The VNF is deployed, and the related service processing is performed normally. In the process of the service process, it is assumed that the external docking device directly forwards the service data to the service processing function 2 according to the current forwarding routing information.
  • Step 801 In this embodiment, it is assumed that the VNF elastic contraction function needs to be performed according to the network operation policy or the elastic requirement, because the user traffic is degraded, for example, in the middle of the night. At this time, if the resource scheduling function 2 shrinks, the resource scheduling function sends a message to the service processing function 2 to notify the service processing function 2 to release all the unit granular resources it occupies.
  • Step 802 After the service processing function 2 successfully releases its service capability resource, the resource scheduling function sends a message to the service processing function 1 to notify the service processing function 1 to accept the new unit granularity resource.
  • Step 803 After the resource re-allocation of the service processing function 2 and the service processing function 1 is completed, the resource scheduling function issues a routing update message to the external docking device, and advertises the updated forwarding routing information to the corresponding docking device through the dynamic routing protocol. .
  • Step 804 The external docking device receives and updates the local forwarding routing information, and directly forwards the received service packet to the corresponding service processing function according to the updated route.
  • the identified service processing function 1 supports the service data directly sent to the service processing function 1;
  • Step 805 After the service processing function 2 completes all resource release and service processing, the service processing function 2 can be closed.
  • FIG. 9 is a schematic flowchart of an embodiment of a flexible extension of a VNF according to an embodiment of the present disclosure.
  • This embodiment describes a VNF deployment architecture based on the embodiment of the present application.
  • the VNF and the service perform flexibility according to the elastic rule. Extended processing.
  • the resource scheduling function recovers part of the unit granular resources from each service processing function, performs resource reallocation, and then adds a service processing function, and allocates the recovered corresponding unit granular resources to the newly added service processing function;
  • the resource management function updates the forwarding routing information and advertises it to the corresponding docking device.
  • the docking device directly forwards the service data to the correct service processing function according to the updated forwarding routing information.
  • the specific implementation is shown in Figure 9, including:
  • Step 900 The VNF is deployed, and the related service processing is performed normally. In the process of the service process, it is assumed that the external docking device directly forwards the service data to the service processing function 1 according to the current forwarding routing information.
  • Step 901 In this embodiment, it is assumed that when the traffic volume increases, for example, during the peak hours of the working day, the traffic volume increases, and the current number of service processing functions cannot meet the current service traffic. According to the network operation policy or the elastic requirement, the VNF needs to be executed. Flexible extensions. At this time, the resource scheduling function determines and starts a new service processing function such as the business processing function 2.
  • Step 902 The resource scheduling function sends a message to the service processing function 1 to notify the service processing function 1 to release part of the unit granularity resource.
  • the resource scheduling function may separately acquire a part of the unit granular resources from each of the plurality of service processing functions to provide the newly extended service processing function.
  • the multiple service processing functions may be selected according to a preset policy, such as according to a load situation, for example, a unit granular resource may be obtained from a heavy load service processing function.
  • the number of unit granular resources obtained from the service processing function depends on the requirements of the newly opened service processing function. According to the policy, the sum of the unit granular resources acquired from the existing service processing function satisfies the requirement of the newly opened service processing function. can.
  • Step 903 the resource scheduling function allocates the unit granularity resource recovered from the service processing function 1 to the service processing function 2, and ensures that the service processing function 2 obtains the unit granularity resource;
  • Step 904 After the resource re-allocation of the service processing function 2 and the service processing function 1 is completed, the resource scheduling function updates the forwarding routing information corresponding to the unit granularity resource, and issues a routing update message to the external docking device, and updates the dynamic routing protocol. The post forwarding routing information is advertised to the corresponding external docking function.
  • Step 905 The external docking device receives and updates the local forwarding routing information.
  • the service packet is directly forwarded to the corresponding service processing function according to the updated route.
  • the service data identified as being supported by the service processing function 1 is directly sent to the service processing function 1; the service data supported by the identified service processing function 2 is directly sent to the service processing function 2.
  • FIG. 10 is a schematic flowchart of an embodiment of a practical application of a VNF architecture according to an embodiment of the present application.
  • This embodiment describes a PGW user plane (PGW- based on the embodiment of the present application) under a control plane/user plane (C/U) separation architecture.
  • PGW-U PGW user plane
  • C/U control plane/user plane
  • U VNF deployment architecture
  • multiple PGW-U service processing functions work simultaneously, and the forwarding routing information is advertised according to the resource scheduling result of the PGW-U, and the connected device such as the SGW can directly direct the service data of different users according to the received forwarding routing information.
  • the PGW-U includes a PGW-U resource scheduling function, and a PGW-U service processing function 1 and a PGW-U service processing function 2.
  • the specific implementation is shown in Figure 10, including:
  • Step 1000 The PGW-U VNF is initialized, and the PGW-U first loads the PGW-U resource scheduling function to perform resource acquisition and management for the service processing function.
  • the PGW-U resource scheduling function obtains multiple GTPU addresses (GTPU address 1 and GTPU address 2), service resources such as an MS address pool, and divides the obtained service resources into unit granular resources.
  • the PGW-U resource scheduling function allocates the divided unit granular resources to the corresponding PGW-U service processing functions.
  • the granularity of the unit granularity resource after the PGW-U resource scheduling function is smaller than or equal to the capability of each PGW-U service processing function, that is, each PGW-U service processing function can acquire one or more unit granular resources.
  • Step 1001 After initializing, the PGW-U service processing function 1 actively requests to obtain a unit granular resource from the PGW-U resource scheduling function, and obtains a GTPU address 1 and a partial MS address pool; or, the PGW-U resource scheduling function is divided. The unit granularity resource information is actively pushed to the PGW-U service processing function 1.
  • Step 1002 After initializing, the PGW-U service processing function 2 actively requests to acquire the unit granularity resource from the PGW-U resource scheduling function, and obtains the GTPU address 2 and the partial MS address pool; or, the PGW-U resource scheduling unit divides the corresponding The unit granularity resource is actively pushed to the PGW-U service processing function 2.
  • Step 1003 The PGW-U resource scheduling function advertises the generated routing information of the unit granularity resource to the corresponding docking device, that is, the SGW, through a dynamic routing protocol, such as OSPF or BGP. Meanwhile, the external routing is obtained from the SGW.
  • a dynamic routing protocol such as OSPF or BGP.
  • Step 1004 The PGW-U resource scheduling function saves the external routing information obtained in step 1003, and advertises the routing information to the PGW-U service processing function 1.
  • Step 1005 The PGW-U resource scheduling function advertises the external routing information obtained in step 1003 to the PGW-U service processing function 2;
  • Step 1006 The PGW Control Plane (PGW-C) receives a Create Session Req message from the SGW carrying the information of the mobile terminal 1 (MS1).
  • PGW-C PGW Control Plane
  • Step 1007 The PGW-C determines to create a PDP bearer of the MS1 on the PGW-U service processing function 1, and the PGW-C obtains the GTPU address 1 from the unit granularity resource of the PGW-U service processing function 1, and from the unit granular resource. Assign an IP address to MS 1.
  • Step 1008 The PGW-C sends a Create Session Rsp message carrying the GTUP 1 address and the IP address of the MS1 to the SGW.
  • Step 1009 The SGW directly forwards the service data to the PGW-U service processing function 1 according to the route corresponding to the GTPU 1 address.
  • Step 1010 The PGW-C receives the Create Session Req message sent by the SGW and carries the information of the MS2.
  • Step 1011 The PGW-C determines to create a PDP bearer of the MS 2 on the PGW-U service processing function 2, and the PGW-C obtains the GTPU address 2 from the unit granularity resource of the PGW-U service processing function 2, and simultaneously from the unit granular resource. Assign an IP address to MS 2 in it.
  • Step 1012 The PGW-C sends a Create Session Rsp message carrying the GTUP 2 address and the IP address of the MS 2 to the SGW.
  • Step 1013 The SGW directly forwards the service data to the PGW-U service processing function 2 according to the route corresponding to the GTPU 2 address.
  • the embodiment of the present application further provides a computer readable storage medium, where the computer executable instructions are used to execute the VNF implementation service processing method according to any one of the embodiments of the present application, for example, as shown in the figure. 5 to at least one of the methods shown in FIG.
  • the computer readable storage medium is optionally a non-transitory storage medium.
  • the forwarding routing information is created by the VNF, and the forwarding routing information corresponding to the unit granularity resource is transmitted to an external router or a docking device; when the service data of the docking device is received, the VNF is selected according to the selection.
  • the business processing logic is executed to perform business processing.
  • the routing information is forwarded according to the divided unit resource granularity resource decision, and then the router or the docking device directly forwards the routing information without using the VNF, thereby realizing the load balancing of the VNF, and on the other hand, canceling the specialization Load balancing function, which solves the traffic bottleneck and delay caused by dedicated load balancing, improves the use efficiency of computing resources, ensures the performance of network data processing, enhances the service experience, and supports high-throughput services. Positive industrial effects.
  • the above method can be realized by upgrading or changing computer executable instructions such as a computer program, and has the characteristics of simple implementation and high reproducibility in industry, so that it has the characteristics of strong industrial achievability.

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Abstract

本申请实施例公开了一种虚拟网络功能及其实现业务处理的方法，包括：VNF将获得的VNF业务资源能力划分为若干单位粒度资源；VNF创建转发路由信息，将划分后的单位粒度资源对应的转发路由信息传送给外部的路由器或者对接设备；当收到对接设备的业务数据时，VNF根据选择出的业务处理逻辑执行业务处理。本申请实施例实施例还提供了一种计算机可读存储介质。

Description

虚拟网络功能及其实现业务处理的方法、存储介质
相关申请的交叉引用
本申请基于申请号为201710166342.4、申请日为2017年03月20日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请实施例涉及移动通信技术，尤指一种虚拟网络功能及其实现业务处理的方法、存储介质。
背景技术
图1为相关技术中3GPP演进分组系统的结构示意图，如图1所示，3GPP演进分组系统(EPS，Evolved Packet System)由演进的通用移动通信系统陆地无线接入网(E-UTRAN，Evolved Universal Terrestrial Radio Access Network)、移动管理单元(MME，Mobility Management Entity)、服务网关(S-GW，Serving Gateway)、分组数据网络网关(PDN GW或P-GW，Packet Data Network Gateway)、归属用户服务器(HSS，Home Subscriber Server)、3GPP的认证授权计费(AAA，Authentication、Authorization and Accounting)服务器、策略和计费规则功能实体(PCRF，Policy and Charging Rules Function)及其它支撑功能组成。
其中，MME用于移动性管理、非接入层信令的处理和用户移动管理上下文的管理等控制面相关工作；S-GW是与E-UTRAN相连的接入网关功能，在E-UTRAN与P-GW之间转发数据，并且用于对寻呼等待数据进行缓存；P-GW则是EPS与PDN的边界网关，用于PDN的接入及在EPS与PDN间 转发数据等功能。PCRF负责策略决策和计费规则的制定，提供基于业务数据流的门控、服务质量控制及计费规则给GW，在承载面执行PCRF所制定的策略和计费规则。在承载建立时，GW按照PCRF发送的规则进行QoS授权和门控控制。根据PCRF发送的计费规则，执行相应的业务数据流计费操作，计费既可以是在线计费，也可以是离线计费。如果是在线计费，则需要和在线计费系统(OCS，Online Charging System)一起进行信用管理。离线计费则和离线计费系统(OFCS，Offline Charging System)之间交换相关的计费信息。GW与PCRF之间的接口是Gx接口，与OCS之间的接口是Gy接口，与OFCS之间的接口是Gz接口。
3GPP中，UE通过接入点名称(APN，Access Point Name)可以找到对应分组数据网络(PDN，Packet Data Network)，为访问PDN网络会建立一个IP连接接入网(IP-CAN，IP Connectivity Access Network)会话的PDN连接。
随着需求增长，EPS网关对网络应用的发展逐步产生了约束。用户数据流处理集中在PDN出口网关，造成网关功能繁杂，可扩展性差。网关控制面与转发面高度耦合，不利于网络的平滑演进和功能增强。转发面扩容需求频度高于控制面，紧耦合导致控制面转发面同步扩容，功能更新周期短，导致复合成本增加。网络层数据转发难以识别用户、业务特征，仅能根据上层传递的服务质量(QoS)转发，导致网络资源利用低效，难以依据用户和业务特性对数据流进行精细管理和控制。此外，大量策略需要手工配置，导致管理复杂度增加，运营成本居高不下。因此，通信网络将分组域网关中的控制功能与转发功能进一步分离，以适应网络发展和市场应用需求。
图2为相关技术中非漫游场景下GW控制面和用户面分离的架构示意图，如图2所示，该架构将原先的EPS架构中的S-GW/P-GW和流量检测 功能(TDF，Traffic Detection Function)拆分成了控制面功能(CPF，Controller plane function)和用户面功能(UPF，User plane function)两类功能网元，S-GW、P-GW和TDF的控制面功能对应于CPF，用户面数据功能对应于UPF。其中，不同类型CPF(或UPF)可以合一部署，也可以独立部署。CPF负责控制面功能，包括负荷分担、UPF选择、UE IP地址分配、策略和计费控制等功能,可选地可包含UPF的用户面地址和隧道标识的分配。UPF负责用户面相关的功能，包括数据流识别和深度包解析、QoS处理和承载绑定，下行寻呼数据的缓存等功能。图1中EPS各类功能的用户面和控制面接口分别对接分离后的CPF和UPF，其余相应接口功能对照原EPS架构。
GW控制面和用户面分离之后，解决了现有EPS网关存在的扩展性差、网络资源利用低效等诸多问题，但是，同时也浮现了新的技术问题。
控制和用户分离后，可以根据需求部署多种或多个UPF，网络部署更为灵活，可以支持更大容量和更为丰富多样的应用业务，可以采用更为高效和灵活的虚拟网络功能(VNF，Virtual network function)部署网络。但是，对网络数据的处理性能需求变得尤其突出，如何支持高吞吐量的业务，如何有效和高效地将网络中的业务处理分担到相应的业务处理功能，成为了新的网络架构中的一个技术瓶颈。
相关技术中，典型的VNF部署架构如图3所示，在业务处理功能前部署负载均衡功能，通过负载均衡功能对业务数据进行分流，并转发到最佳的业务处理功能。但是，对于业务数据量大的业务，该部署方案存在很多制约和不足。首先，由于虚拟计算能力和虚拟网卡的使用，使得负载均衡功能的网络吞吐能力受到限制。其次，负载均衡功能和业务处理功能之间的数据转发，只能借助于以太网交换机和/或虚拟交换机，数据交换能力成为瓶颈。另外，数据经过虚拟交换机多次转发，时延较大，不只是影响业务体验，对例如自动驾驶和车联网这类对时延要求高的业务，是无法满足 和保证业务功能的基本需求的。
因此，如何解决控制面和用户面分离架构后的大流量高性能部署需求，保证网络数据处理的性能，支持高吞吐量业务，高效地执行业务处理分担，成为需要研究和解决的问题。
发明内容
本申请实施例期望提供一种虚拟网络功能及其实现业务处理的方法，能够保证网络数据处理的性能，支持高吞吐量业务。
本申请实施例提供了一种虚拟网络功能(Virtualized Network Function，VNF)，包括：资源调度功能、一个或一个以上业务处理功能；其中，
资源调度功能，配置为获取VNF业务资源能力，将获得的VNF业务资源能力划分为若干单位粒度资源；为每个单位粒度资源创建转发路由信息，将划分后的单位粒度资源对应的转发路由信息传送给外部的路由器或者对接设备；
业务处理能力，配置为从资源调度功能获取一个或一个以上单位粒度资源；当收到对接设备的业务数据时，按照根据获得的单位粒度资源的类型选择出的业务处理逻辑执行业务处理。
本申请还提供了一种虚拟网络功能VNF实现业务处理的方法，包括：
VNF获取VNF业务资源能力，将获得的VNF业务资源能力划分为若干单位粒度资源；
VNF创建转发路由信息，将划分后的单位粒度资源对应的转发路由信息传送给外部的路由器或者对接设备；
当收到对接设备的业务数据时，VNF根据选择出的业务处理逻辑执行业务处理。
本申请还提供一种计算机可读存储介质，所述计算机可读存储介质存 储有计算机可读指令；所述计算机可读指令被执行后，能够实现前述的VNF实现业务处理的方法。
本申请技术方案包括：VNF将获得的VNF业务资源能力划分为若干单位粒度资源；VNF创建转发路由信息，将划分后的单位粒度资源对应的转发路由信息传送给外部的路由器或者对接设备；当收到对接设备的业务数据时，VNF根据选择出的业务处理逻辑执行业务处理。本申请实施例提供的技术方案，一方面，通过对VNF业务资源细分为若干单位粒度资源，并根据该单位粒度资源决策转发路由信息，将该转发路由信息发送给路由器或者对接设备，而路由器或者对接设备根据获得的转发路由信息执行到相应业务处理功能的直接转发，实现了VNF的负载均衡功能。由此，减少了对计算资源的占用；而且，外部对接设备将数据直接发送给业务处理功能，减少了对虚拟交换机和实体交换机一半资源的占用，增加了数据传输效率，缩短了数据传输和处理路径，降低了时延；另一方面，相对于相关技术中的VNF，取消专门的负载均衡功能，避免了计算和数据交换的流量瓶颈和时延，提高了计算资源的使用效率，保证了网络数据处理的性能，增强了业务体验，支持了高吞吐量业务。
本申请实施例的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本申请实施例而了解。本申请实施例的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图说明
此处所说明的附图用来提供对本申请实施例的进一步理解，构成本申请的一部分，本申请实施例的示意性实施例及其说明用于解释本申请实施例，并不构成对本申请实施例的不当限定。在附图中：
图1为相关技术中3GPP演进分组系统的结构示意图；
图2为相关技术中非漫游场景下GW控制面和用户面分离的架构示意图；
图3为相关技术中典型的VNF部署架构示意图；
图4为本申请实施例VNF部署架构示意图；
图5为本申请实施例部署VNF的实施例的流程示意图；
图6为本申请实施例VNF实现业务处理的方法的流程图；
图7为本申请实施例加载VNF中的资源调度功能和业务处理功能的实施例的流程示意图；
图8为本申请实施例VNF实现弹性收缩的实施例的流程示意图；
图9为本申请实施例VNF实现弹性扩展的实施例的流程示意图；
图10为本申请实施例VNF架构实际应用的实施例的流程示意图。
具体实施方式
下文中将结合附图对本申请的实施例进行详细说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
图4为本申请实施例的一种VNF部署架构示意图，如图4所示，至少包括：资源调度功能、一个或一个以上业务处理功能；其中，
资源调度功能，配置为获取VNF业务资源能力，将获得的VNF业务资源能力划分为若干单位粒度资源；根据各单位粒度资源当前所在业务处理功能的接口地址分别为每个单位粒度资源创建转发路由信息，将划分后的单位粒度资源对应的转发路由信息传送给外部的路由器或者直接连接的对接设备；
业务处理能力，配置为从资源调度功能获取一个或一个以上单位粒度资源；当收到对接设备的业务数据时，按照根据获得的单位粒度资源的类 型选择出的业务处理逻辑执行业务处理。
此处的所述资源调度功能可为资源调度功能实体的简称。业务处理能力可为业务处理能力实体的简称。这些实体对应有特定的硬件结构，例如，该硬件结构可包括：处理器及存储器，该存储器还安装有计算机可执行代码，能够通过计算机可执行代码的执行实现上述功能。在一些情况下，所述硬件接口还可包括与处理器连接的收发器，例如，网络接口等，可以用于数据交互。
其中，划分后的单位粒度资源的粒度小于或等于业务处理功能的能力，即每个业务处理功能可获取一个或多个单位粒度资源。每一个业务功能单位时间内或单次可以处理的资源的粒度是确定的，在本实施例中，划分后的单位粒度资源的粒度，小于业务处理功能的能力，可理解为小于业务出功能单次或单位时间内可处理的资源的粒度。资源的粒度，可对应于资源的尺寸。例如，存储资源的粒度对应的存储资源的容量单位；计算资源的粒度可对应于计算资源能够处理的并发线程的个数，提供的中央处理器的核数等。
其中，业务处理能力获取单位粒度资源包括：业务处理能力在初始化后主动从资源调度功能处请求以获取单位粒度资源；或者，业务处理能力接收资源调度功能主动推送的单位粒度资源。
其中，资源调度功能和业务处理功能之间设置有资源管理接口。
其中，VNF业务资源能力包括对外的服务地址，业务使用的地址池等信息。
可选地，路由器或者对接设备根据转发路由信息执行报文识别和转发操作。即，路由器或者对接设备根据获得的转发路由信息执行转发，以协助VNF执行负载均衡功能，实现VNF的负载均衡功能。
本申请实施例提供的VNF，一方面，通过对VNF业务资源细分为若干 单位粒度资源，并根据该单位粒度资源决策转发路由信息，将该转发路由信息发送给路由器或者对接设备，而路由器或者对接设备会根据获得的转发路由信息执行到相应业务处理功能的直接转发，实现了VNF的负载均衡功能。由此，减少了对计算资源的占用；而且，外部对接设备将数据直接发送给业务处理功能，减少了对虚拟交换机和实体交换机一半资源的占用，增加了数据传输效率，缩短了数据传输和处理路径，降低了时延。另一方面，资源调度功能直接执行路由管理和数据分发(业务处理功能直接从外部接收业务数据并完成数据处理或转发)，相对于相关技术中的VNF，取消了负载均衡功能，避免了计算和数据交换的流量瓶颈和时延，提高了计算资源的使用效率，保证了网络数据处理的性能，增强了业务体验，支持了高吞吐量业务。
可选地，本申请实施例VNF还支持业务处理功能的弹性伸缩能力。此时，资源调度功能还用于：当执行VNF扩展(VNF scale out)时，从选择出的业务处理功能回收单位粒度资源以满足新开启的业务处理功能的需求，执行资源再分配(即将回收的单位粒度资源分配给新增的业务处理功能)，更新转发路由信息，并通告给相应的路由器或者对接设备。根据更新后的转发路由信息，业务数据将直接被转发到相应业务处理功能(包括原先的业务处理功能，和新增的业务处理功能)；
和/或，当执行VNF收缩(VNF scale in)时，从选定的需要执行VNF弹性收缩的业务处理功能处回收全部单位粒度资源，执行资源再分配(即将相应单位粒度资源分配给其余的业务处理功能)，更新转发路由信息，并通告给相应的路由器或者对接设备。根据更新后的转发路由信息，业务数据将直接被转发到相应业务处理功能(scale in处理后现存的业务处理功能)。
可选地，业务处理功能还用于：在各个业务处理功能之间执行弹性备 份。备份方式包括如N对M主备方式，其中，N和M的取值大于或等于1，N和M都是整数。通过各个业务处理功能之间执行弹性备份，本申请实施例VNF支持了业务的高可靠性。
本申请实施例提供的技术方案，新增了资源调度功能，除了满足以上大流量高性能VNF部署需求，还进一步支持了VNF的弹性伸缩能力，支持了业务的高可靠性。
本申请实施例提供的VNF是需要部署在网络中的。图5为本申请实施例部署VNF的实施例的流程示意图，如图5所示，包括：
步骤500：创建业务网络平台。在云管理平台(VIM，Virtual Infrastructure Management)上，创建VNF需要使用的业务网络平面。
本步骤中，管理员创建的业务网络平面确保了VNF内部、VNF对外的网络连接的正确建立。
步骤501：创建资源调度功能。管理员通过VIM创建资源调度功能，将资源调度功能的网络接口加入到业务网络平面中。
比如：资源管理功能通过内部网络平面建立与业务处理功能的接口，通过外部网络平面建立与外部的路由器以及对接设备的接口；
步骤502：资源调度功能从VIM处获取接口地址，取得接口地址后，资源调度功能和外部对接设备完成网络连接，并且，资源调度功能和对接设备之间建立动态路由邻居关系。
本步骤中的获取接口地址的方式有多种，比如：可以由VIM通过初始化脚本文件传递给资源调度功能，或者资源调度模块通过动态主机配置协议(DHCP，Dynamic Host Configuration Protocol)接口向VIM进行请求等。
此时，资源调度功能与外部的路由器/对接设备之间建立了网络连接并启用了动态路由协议。
资源调度功能通过动态路由协议传递路由。
其中，动态路由协议可以采用开放式最短路径优先协议(OSPF，Open Shortest Path First)，或边界网关协议(BGP，Border Gateway Protocol)。
步骤503：创建业务处理功能。管理员通过VIM创建业务处理功能，将业务处理功能的网络接口加入到业务网络平面中；同样，业务处理功能通过内部网络平面和资源调度功能建立起接口连接；业务处理功能通过外部网络平面和外部对接设备建立起连接。
步骤504：业务处理功能从VIM处获取接口地址，取得接口地址后，业务处理功能和外部对接设备建立网络连接；业务处理功能可以和外部对接功能之间开启数据通信。
本步骤中的获取接口地址的方式有多种，比如：可以由VIM通过初始化脚本文件传递给业务处理功能，或者业务处理功能通过DHCP接口向VIM进行请求等。
需要说明的是，步骤502～步骤503与步骤504～步骤505之间并没有严格的顺序要求，业务处理功能也可以先启动，只是在启动后不能进行通信，必须等待资源调度功能完成对接后才能处理业务。
本申请实施例提供的VNF实现业务处理的方法，一方面，通过对VNF业务资源细分为若干单位粒度资源，并根据该单位粒度资源决策转发路由信息，将该转发路由信息发送给路由器或者对接设备，而路由器或者对接设备根据获得的转发路由信息执行到相应业务处理功能的直接转发，实现了VNF的负载均衡功能。由此，减少了对计算资源的占用；而且，外部对接设备将数据直接发送给业务处理功能，减少了对虚拟交换机和实体交换机一半资源的占用，增加了数据传输效率，缩短了数据传输和处理路径，降低了时延。另一方面，资源调度功能直接执行路由管理和数据分发(业务处理功能直接从外部接收业务数据并完成数据处理或转发)，相对于相关技术中的VNF，取消了负载均衡功能，避免了计算和数据交换的流量瓶颈 和时延，提高了计算资源的使用效率，保证了网络数据处理的性能，增强了业务体验，支持了高吞吐量业务。
此时，业务处理功能与外部的路由器/对接设备之间建立了网络连接并启用了数据通信。
图6为本申请实施例VNF实现业务处理的方法的流程图，如图6所示，包括：
步骤600：VNF获取VNF业务资源能力，将获得的VNF业务资源能力划分为若干单位粒度资源。
本步骤中，单位粒度资源的划分方式，可以根据VNF中预期部署的业务处理功能数目和能力来进行划分，也可以采用更细粒度的划分方式，具体划分方式这里并不做限定，只要确保每个业务处理功能获得适当的业务资源，形成有效的负载均衡效果即可。
结合图4所示的本申请实施例VNF，本步骤中，VNF中的资源调度功能在加载中，会获取VNF业务资源能力，将获得的VNF业务资源能力划分为若干单位粒度资源。
其中，划分后的单位粒度资源的粒度小于或等于单个业务处理功能的能力，即每个业务处理功能可获取一个或多个单位粒度资源。
步骤601：VNF创建转发路由信息，将划分后的单位粒度资源对应的转发路由信息传送给外部的路由器或者直接连接的对接设备。
本步骤中，VNF中的资源调度功能根据各单位粒度资源当前所在业务处理功能的接口地址分别为每个单位粒度资源创建转发路由信息。具体地，为路由设置下一跳转发地址，该下一跳转发地址设置为单位粒度资源当前所在的业务处理功能的接口地址；资源调度功能随后将划分后的单位粒度资源对应的转发路由信息传送给外部的路由器或者直接连接的对接设备。
步骤602：当收到对接设备的业务数据时，VNF根据选择出的业务处 理逻辑执行业务处理。
本步骤中，VNF中的业务处理功能会从资源调度功能获取一个或一个以上单位粒度资源，并根据获得的单位粒度资源的类型，选择使用对应的业务处理逻辑，这样，当收到对接功能的业务数据时，根据选择出的业务处理逻辑执行业务处理即可。
其中，业务处理能力获取单位粒度资源包括：业务处理能力在初始化后主动从资源调度功能处请求以获取单位粒度资源；或者，业务处理能力接收资源调度功能主动推送的单位粒度资源。
本申请实施例方法还包括：路由器或者对接设备根据转发路由信息执行报文识别和转发操作。即，路由器或者对接设备根据获得的转发路由信息执行转发，以协助VNF执行负载均衡功能，实现VNF的负载均衡功能。
本申请实施例方法之前还包括：部署VNF到网络中。具体实现如图5所示，这里不再赘述。
在VNF完成部署后，首先要加载资源调度功能和业务处理功能，以便于执行对业务处理功能的资源获取和管理。图7为本申请实施例VNF实现业务加载的实施例的流程示意图，本实施例描述了基于本申请实施例的VNF部署架构，VNF以及服务的加载过程，以及VNF和服务的高性能业务处理过程，本实施例中，假设业务处理功能包括业务处理功能1和业务处理功能2，如图7所示，包括：
步骤700：VNF初始化后，加载资源调度功能，以便执行对业务处理功能的资源获取和管理。
本步骤具体包括：资源调度功能从系统配置中获取业务对外服务地址，业务使用的地址池等VNF业务资源，将获取到的整个VNF或服务的业务资源能力分成若干业务资源子能力单元即单位粒度资源，并将划分后的单位粒度资源分配给相应业务处理功能。根据业务处理功能和单位粒度资源 的对应关系，为每个单位粒度资源创建对应的转发路由信息。
其中，资源调度功能划分后的单位粒度资源的粒度小于或等于每个业务处理功能的能力，即每个业务处理功能可获取一个或多个单位粒度资源。
步骤701：本实施例中，业务处理功能1在初始化后主动从资源调度功能请求获取单位粒度资源；或者，资源调度功能将划分后的单位粒度资源信息主动推送给业务处理功能1。
步骤702：本实施例中，业务处理功能2在初始化后主动从资源调度功能处请求获取单位粒度资源；或者，资源调度单元将相应划分后的单位粒度资源主动推送给业务处理功能2。
步骤703：资源调度功能通过动态路由协议，比如OSPF或BGP协议，将生成的单位粒度资源对应的转发路由信息通告给相应的路由器或者对接设备；同时，资源调度功能从外部的路由器或者对接设备接收对方通告的外部路由信息。
步骤704：资源调度功能保存步骤703中获得的外部路由信息，并将从对接设备获得的外部路由信息通告给业务处理功能1。
步骤705：资源调度功能将从对接设备获得的外部路由信息通告给业务处理功能2。
步骤706：对接设备获得相关业务处理功能的转发路由信息后，对接收到的数据报文进行识别，当该数据报文为业务处理功能1对应的业务功能数据时，根据转发路由信息直接转发该数据到业务处理功能1；业务处理功能1根据业务处理规则，对该报文执行处理。
步骤707：对接设备获得相关业务处理功能的转发路由信息后，对接收到的数据报文进行识别，当该数据报文为业务处理功能2对应的业务功能数据时，根据转发路由信息直接转发该数据到业务处理功能2；业务处理功能2根据业务处理规则，对该报文执行处理。
可选地，本申请实施例VNF还支持业务处理功能的弹性伸缩能力。此时，本申请实施例方法还包括：
当执行VNF扩展(VNF scale out)时，VNF中的资源调度功能从选择出的业务处理功能回收部分单位粒度资源以满足新开启的业务处理功能的需求，执行资源再分配(即将回收的相应单位粒度资源分配给新增的业务处理功能)，更新转发路由信息，并通告给相应的路由器或者对接设备。根据更新后的转发路由信息，业务数据将直接被转发到相应业务处理功能(包括原先的业务处理功能，和新增的业务处理功能)；和/或，
当执行VNF收缩(VNF scale in)时，VNF中的资源调度功能从选定的需要执行VNF弹性收缩的业务处理功能处回收全部单位粒度资源，执行资源再分配(即将相应单位粒度资源分配给其余的业务处理功能)，更新转发路由信息，并通告给相应的路由器或者对接设备。根据更新后的转发路由信息，业务数据将直接被转发到相应业务处理功能(scale in处理后现存的业务处理功能)。
可选地，本申请实施例方法还包括：在VNF中的各个业务处理功能之间执行弹性备份。
其中，备份方式包括如N对M主备方式，其中，N和M的取值大于或等于1，N和M都是整数。通过各个业务处理功能之间执行弹性备份，本申请实施例VNF支持了业务的高可靠性。
图8为本申请实施例VNF实现弹性收缩的实施例的流程示意图，本实施例中描述了基于本申请实施例的VNF部署架构，多个业务处理功能同时工作时，VNF以及服务根据弹性规则执行弹性收缩的处理过程。本实施例中，假设资源调度功能从选定的业务处理功能回收全部单位粒度资源，执行资源再分配；而后将回收后的单位粒度资源分配给需要的业务处理功能，并更新转发路由信息后通告给相应的对接设备。对接设备则根据更新后的 转发路由信息直接转发业务数据到正确的业务处理功能。具体实现如图8所示，包括：
步骤800：VNF部署完毕，相关业务处理正常执行。在业务处理过程中，假设外部的对接设备根据当前转发路由信息，将业务数据直接转发给业务处理功能2。
步骤801：本实施例中，假设由于用户业务量下降，比如在深夜时段，大部分用户不再发起业务，此时，根据网络运营策略或弹性需求，需要执行VNF弹性收缩功能。此时，资源调度功能如果决策业务处理功能2收缩，则会向业务处理功能2发送消息，以通知业务处理功能2释放其占用的全部单位粒度资源。
步骤802：业务处理功能2成功释放其业务能力资源后，资源调度功能向业务处理功能1发送消息，以告知业务处理功能1接纳新的单位粒度资源。
步骤803：完成业务处理功能2和业务处理功能1的资源重分配后，资源调度功能向外部的对接设备发布路由更新消息，并通过动态路由协议将更新后的转发路由信息发布给相应的对接设备。
步骤804：外部的对接设备接收并更新本地的转发路由信息；根据更新后的路由将接收到的业务报文直接转发给相应业务处理功能。
比如，本实施例中，将识别出的业务处理功能1支持业务数据直接发送到业务处理功能1；
步骤805：业务处理功能2完成全部资源释放和业务处理后，业务处理功能2可以被关闭。
图9为本申请实施例VNF实现弹性扩展的实施例的流程示意图，本实施例描述了基于本申请实施例的VNF部署架构，多个业务处理功能同时工作时，VNF以及服务根据弹性规则执行弹性扩展的处理过程。本实施例中， 假设资源调度功能从各个业务处理功能回收部分单位粒度资源，执行资源再分配；而后增加一个业务处理功能，并将回收的相应单位粒度资源分配给该新增的业务处理功能；资源管理功能更新转发路由信息，并通告给相应的对接设备。对接设备则根据更新后的转发路由信息直接转发业务数据到正确的业务处理功能。具体实现如图9所示，包括：
步骤900：VNF部署完毕，相关业务处理正常执行。在业务处理过程中，假设外部的对接设备根据当前转发路由信息，将业务数据直接转发给业务处理功能1。
步骤901：本实施例中，假设当业务量增长，比如在工作日的高峰时段，业务量上涨，目前的业务处理功能数量不能满足当前的业务流量，根据网络运营策略或弹性需求，需要执行VNF弹性扩展功能。此时，资源调度功能如果决策并开启新的业务处理功能如业务处理功能2。
步骤902：资源调度功能向业务处理功能1发送消息，以通知业务处理功能1释放部分单位粒度资源。
这里，如果同时存在的多个业务处理功能，资源调度功能可以分别从多个业务处理功能中各获取一部分单位粒度资源，以提供给新扩展的业务处理功能。其中，多个业务处理功能可以是按照预先设置的策略如按照负荷情况选择出来的，比如可以从负荷重的业务处理功能中获取单位粒度资源。其中，从业务处理功能中获取多少单位粒度资源取决于新开启的业务处理功能的需求，按照策略，只要从现存的业务处理功能获取的单位粒度资源的总和满足新开启的业务处理功能的需求即可。
步骤903：本实施例中，资源调度功能将从业务处理功能1中回收的单位粒度资源，分配给业务处理功能2，确保业务处理功能2获得单位粒度资源；
步骤904：完成业务处理功能2和业务处理功能1的资源重分配后，资 源调度功能更新单位粒度资源对应的转发路由信息，并向外部的对接设备发布路由更新消息，并通过动态路由协议将更新后的转发路由信息发布给相应的外部对接功能。
步骤905：外部的对接设备接收并更新本地的转发路由信息。并根据更新后的路由将接收到的业务报文直接转发给相应业务处理功能。
比如，本实施例中，将识别为业务处理功能1支持的业务数据直接发送到业务处理功能1；将识别出的业务处理功能2支持的业务数据直接发送到业务处理功能2。
图10为本申请实施例VNF架构实际应用的实施例的流程示意图，本实施例描述了在控制面/用户面(C/U)分离架构下，基于本申请实施例的PGW用户面(PGW-U)VNF部署架构，多个PGW-U业务处理功能同时工作，根据PGW-U的资源调度结果发布转发路由信息，对接的设备如SGW能够依照接收的转发路由信息，将不同用户的业务数据直接转发到正确的PGW-U媒体面功能即业务处理功能。本实施例中，假设PGW-U包括PGW-U资源调度功能，以及PGW-U业务处理功能1和PGW-U业务处理功能2。具体实现如图10所示，包括：
步骤1000：PGW-U VNF初始化，PGW-U首先加载PGW-U资源调度功能，以便执行对业务处理功能的资源获取和管理。
本实施例中，PGW-U资源调度功能从系统配置中获取多个GTPU地址(GTPU地址1和GTPU地址2)，MS地址池等业务资源，并将获得的业务资源分成单位粒度资源。PGW-U资源调度功能将划分后的单位粒度资源分配给相应的PGW-U业务处理功能。
根据PGW-U业务处理功能和单位粒度资源的对应关系，为每个单位粒度资源创建对应的转发路由信息。
其中，PGW-U资源调度功能划分后的单位粒度资源的粒度小于或等于 每个PGW-U业务处理功能的能力，即每个PGW-U业务处理功能可获取一个或多个单位粒度资源。
步骤1001：PGW-U业务处理功能1在初始化后主动从PGW-U资源调度功能处请求获取单位粒度资源，获得GTPU地址1以及部分MS地址池；或者，PGW-U资源调度功能将划分后的单位粒度资源信息主动推送给PGW-U业务处理功能1。
步骤1002：PGW-U业务处理功能2在初始化后主动从PGW-U资源调度功能处请求获取单位粒度资源，获得GTPU地址2以及部分MS地址池；或者，PGW-U资源调度单元将相应划分后的单位粒度资源主动推送给PGW-U业务处理功能2。
步骤1003：PGW-U资源调度功能通过动态路由协议，比如OSPF或BGP协议，将生成的单位粒度资源的路由信息通告给相应的对接设备即SGW；同时，从SGW处获取外部路由。
步骤1004：PGW-U资源调度功能保存步骤1003中获得的外部路由信息，并将路由信息通告给PGW-U业务处理功能1。
步骤1005：PGW-U资源调度功能将步骤1003中得的外部路由信息通告给PGW-U业务处理功能2；
步骤1006：PGW控制面(PGW-C)接收到来自SGW的携带有移动终端1(MS1)的信息的创建会话请求(Create Session Req)消息。
步骤1007：PGW-C决定在PGW-U业务处理功能1上创建MS1的PDP承载，PGW-C从PGW-U业务处理功能1的单位粒度资源中获取GTPU地址1，同时从该单位粒度资源中为MS 1分配IP地址。
步骤1008：PGW-C向SGW发送携带有GTUP 1地址和MS1的IP地址的创建会话响应(Create Session Rsp)消息。
步骤1009：SGW根据GTPU 1地址对应的路由，直接将业务数据转发 给PGW-U业务处理功能1。
步骤1010：PGW-C接收到SGW发送的携带有MS2的信息的Create Session Req消息.
步骤1011：PGW-C决定在PGW-U业务处理功能2上创建MS 2的PDP承载，PGW-C从PGW-U业务处理功能2的单位粒度资源中获取GTPU地址2，同时从该单位粒度资源中为MS 2分配IP地址。
步骤1012：PGW-C向SGW发送携带有GTUP 2地址和MS 2的IP地址的Create Session Rsp消息。
步骤1013：SGW根据GTPU 2地址对应的路由，直接将业务数据转发给PGW-U业务处理功能2。
本申请实施例还提供了一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行本申请实施例任一项的VNF实现业务处理的方法，例如，如图5至图10所示方法的至少其中之一。所述计算机可读存储介质可选为非瞬间存储介质。
以上所述，仅为本申请实施例的较佳实例而已，并非用于限定本申请实施例的保护范围。凡在本申请实施例的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请实施例的保护范围之内。
工业实用性
本申请实施例提供的技术方案，由VNF创建转发路由信息，将划分后的单位粒度资源对应的转发路由信息传送给外部的路由器或者对接设备；当收到对接设备的业务数据时，VNF根据选择出的业务处理逻辑执行业务处理。一方面，根据划分的单位资源粒度资源决策转发路由信息，再有路由器或对接设备直接转发即可，不用VNF进行路由信息的转发了，从而实现了VNF的负载均衡，另一方面，取消了专门的负载均衡功能，从而解决 了专门的负载均衡导致的流量瓶颈和时延，提高了计算资源的使用效率，保证了网络数据处理的性能，增强了业务体验，支持了高吞吐量业务，故具有积极的工业效果。在具体实现时，可以通过计算机程序等计算机可执行指令的升级或改变，就可以实现上述方式，具有实现简单，在工业上可复制性高的特点，故具有工业可实现性强的特点。

Claims (17)

  1. 一种虚拟网络功能VNF，包括：资源调度功能、一个或一个以上业务处理功能；其中，
    资源调度功能，配置为获取VNF业务资源能力，将获得的VNF业务资源能力划分为若干单位粒度资源；为每个单位粒度资源创建转发路由信息，将划分后的单位粒度资源对应的转发路由信息传送给外部的路由器或者对接设备；
    业务处理能力，配置为从资源调度功能获取一个或一个以上单位粒度资源；当收到对接设备的业务数据时，按照根据获得的单位粒度资源的类型选择出的业务处理逻辑执行业务处理。
  2. 根据权利要求1所述的VNF，其中，所述资源调度功能还配置为：当执行VNF扩展scale out时，从选择出的业务处理功能回收部分单位粒度资源，执行资源再分配，更新所述转发路由信息并通告给相应的路由器或者对接设备；和/或，
    当执行VNF收缩scale in时，从需要执行VNF弹性收缩的业务处理功能回收全部单位粒度资源，执行资源再分配，更新所述转发路由信息并通告给相应的路由器或者对接设备。
  3. 根据权利要求1所述的VNF，其中，所述业务处理功能还配置为：在各个所述业务处理功能之间执行弹性备份。
  4. 根据权利要求3所述的VNF，其中，所述备份方式包括：N对M主备方式，其中，N和M的取值大于或等于1，N和M都是整数。
  5. 根据权利要求1、2或3所述的VNF，其中，所述划分后的单位粒度资源的粒度小于或等于所述业务处理功能的能力。
  6. 根据权利要求1、2或3所述的VNF，其中，所述业务处理能力获取单位粒度资源包括：
    所述业务处理能力在初始化后主动从所述资源调度功能处请求以获取单位粒度资源；或者，
    所述业务处理能力接收所述资源调度功能主动推送的单位粒度资源。
  7. 根据权利要求1、2或3所述的VNF，其中，所述资源调度功能和各业务处理功能之间设置有资源管理接口。
  8. 根据权利要求1、2或3所述的VNF，其中，所述VNF业务资源能力包括：对外的服务地址，业务使用的地址池。
  9. 一种虚拟网络功能VNF实现业务处理的方法，其中，包括：
    VNF获取VNF业务资源能力，将获得的VNF业务资源能力划分为若干单位粒度资源；
    VNF创建转发路由信息，将划分后的单位粒度资源对应的转发路由信息传送给外部的路由器或者对接设备；
    当收到对接设备的业务数据时，VNF根据选择出的业务处理逻辑执行业务处理。
  10. 根据权利要求9所述的方法，其中，该方法还包括：当执行VNF扩展scale out时，从选择出的务处理功能回收部分单位粒度资源以满足新开启的业务处理功能的需求，执行资源再分配，更新所述转发路由信息并通告给相应的路由器或者对接设备；和/或，
    当执行VNF收缩scale in时，从需要执行VNF弹性收缩的业务处理功能回收全部单位粒度资源，执行资源再分配，更新转发路由信息并通告给相应的路由器或者对接设备。
  11. 根据权利要求9所述的方法，其中，该方法还包括：在所述VNF中的各个业务处理功能之间执行弹性备份。
  12. 根据权利要求11所述的方法，其中，所述备份方式包括：N对M主备方式，其中，N和M的取值大于或等于1，N和M都是整数。
  13. 根据权利要求9、10或11所述的方法，其中，所述VNF创建转发路由信息包括：
    所述VNF中的资源调度功能根据各单位粒度资源当前所在业务处理功能的接口地址分别为每个单位粒度资源创建转发路由信息，其中，为路由设置的下一跳转发地址为该单位粒度资源当前所在的业务处理功能的接口地址。
  14. 根据权利要求9、10或11所述的方法，其中，所述划分后的单位粒度资源的粒度小于或等于所述业务处理功能的能力。
  15. 根据权利要求9、10或11所述的方法，其中，所述获取单位粒度资源包括：
    所述VNF中的业务处理能力在初始化后主动从所述VNF中的资源调度功能处请求以获取单位粒度资源；或者，
    所述VNF中的业务处理能力接收所述VNF中的资源调度功能主动推送的单位粒度资源。
  16. 根据权利要求9、10或11所述的方法，其中，所述VNF业务资源能力包括：对外的服务地址，业务使用的地址池。
  17. 一种计算机可读存储介质，所述计算机可读存储介质存储有计算机可读指令；所述计算机可读指令被执行后，能够实现权利要求9至16任一项提供的虚拟网络功能VNF实现业务处理的方法。
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