CN110995514B - Multi-dimensional end-to-end network slice generation device and method - Google Patents
Multi-dimensional end-to-end network slice generation device and method Download PDFInfo
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Abstract
The invention discloses a multi-dimensional end-to-end network slice generation device and a method, which overcome the problems that in the prior art, a user plane only sends a slice request, slices are not created, resource division is not thorough enough, and the generated universal abstract topology can not accurately reflect the actual connection condition between network functional units, and the realization steps are as follows: (1) creating an application container; (2) generating a user plane network slice; (3) dividing the virtual network according to the stream space rule; (4) generating a control plane network slice; (5) generating a multidimensional end-to-end network slice; in the process of designing the multi-dimensional end-to-end network slice generation device and method, the invention generates the end-to-end network slices with separated functions and logics by generating the network slices from the two dimensions of the user plane and the control plane.
Description
Technical Field
The invention belongs to the technical field of communication, and further relates to a multi-dimensional end-to-end network slice generation device and method in the technical field of wireless communication. The invention constructs a multi-dimensional end-to-end network slice by dividing the network slice into two dimensions of a user plane network slice and a control plane network slice, and the end-to-end network slice can create a network slice logically isolated in function and resource by virtually instantiating a plurality of logic networks on a unified physical network infrastructure, thereby realizing the network isolation of different types of network slices in a fifth generation mobile communication network 5G (the first generation).
Background
With the development of communication network technology, services in a 5G network are more and more diversified, and compared with a traditional network, an end-to-end network slice can fully utilize limited network resources and flexibly divide the network resources for different service types. End-to-end network slicing techniques provide customized services to diverse traffic in a network on demand by virtually instantiating multiple networks on a unified physical network infrastructure, the created network slices being logically isolated in function and resources.
A5G end-to-end network slice generation method based on a template is proposed in a patent document '5G end-to-end network slice generation method and device based on the template' applied by Beijing post and telecommunications university (application date: 2018, 6 and 4 months, application number: 201810564658.3, application publication number: CN 108770016A). The method comprises the following specific steps: the method comprises the steps of receiving a network slice generation request, wherein the slice generation request is used for generating a network slice. And secondly, triggering and adopting a universal template to generate an abstract topology corresponding to the network slice according to the slice generation request, wherein the abstract topology is used for describing the connection relationship among all network functional units. And thirdly, mapping the corresponding abstract topology into a physical topology through a mapping strategy to generate the network slice. The method has the disadvantages that when a network slice generating device receives a plurality of network slice generating requests with similar network requirements, the same general template is adopted to generate the same type of abstract topologies according to the slice generating requests, and the abstract topologies map the same type of abstract topologies to physical topologies according to a mapping strategy to generate the same type of network slices. Network slices of the same type are not logically isolated in function and resources, resulting in the generated network slices not working stably. This document also proposes a template-based 5G end-to-end network slice generation apparatus, including: 1. the receiving module is used for receiving a network slice generation request, and the slice generation request is used for generating a network slice. 2. And the generation module is used for triggering and adopting a universal template to generate an abstract topology corresponding to the network slice according to the slice generation request, wherein the abstract topology is used for describing the connection relationship among the network functional units. 3. A mapping module, configured to map the corresponding abstract topology into a physical topology through a mapping policy to generate the network slice. The device has the disadvantages that the generation module adopts the universal template to generate the abstract topology corresponding to the network slice, and the universal abstract topology generated by the generation module cannot accurately reflect the actual connection condition between the network function units. The network slice generated by the mapping module cannot provide functionally and logically isolated network slices for different applications, resulting in the generated network slice not working stably.
The patent document "network slice generation method and network slice system" (application date: 8/4/2017, application number: 201710658893.2, application publication number: CN 109547227 a) applied by the company of telecommunications limited in china proposes a network slice generation method and system. The method comprises the following specific steps: the method comprises the following steps of firstly, receiving a slice creating request from a user, wherein the slice creating request comprises slice template information selected by the user. And secondly, selecting a network function virtualization orchestrator NFVO (network Functions virtualization orchestration) according to the network information of the user, and sending a network service instance creation instruction to the NFVO. And thirdly, acquiring the slice identifier and the incidence relation between the slice identifier and the network service instance from the NFVO, and feeding back creation success information to a user. The method has the disadvantages that the method needs to receive a slicing request of a user plane, and then obtains a slicing identifier through a network function virtualization orchestrator of a control plane to establish a network slice. And only a slice request is sent on the user plane, slices are not created, and the resource division is not thorough. The network slice needs a long time to complete the creation, the user waiting time is long, and the time complexity is high. In this document, a network slicing system is also proposed, which includes a slicing management module, and the slicing management module includes: the request acquisition unit is used for receiving a slice creation request from a user, wherein the slice creation request comprises slice template information selected by the user; the instruction sending unit is used for selecting the NFVO according to the network information of the user and sending a network service instance creating instruction to the NFVO so that the NFVO can generate a network service instance according to the slice template information; and the result forwarding unit is used for acquiring the slice identifier and the incidence relation between the slice identifier and the network service instance from the NFVO and feeding back creation success information to the user. The system has the disadvantages that the system needs the request acquisition unit to send the creation instruction and then the instruction sending unit selects the network function virtualization orchestrator to create the network slice, network resources are only divided at the control plane, the user plane only sends the generation request, and the resource division is not thorough. And the network slice needs a longer time to complete the creation, the user waiting time is longer, and the time complexity is higher.
Disclosure of Invention
The invention aims to provide a multi-dimensional end-to-end network slice generation device and a multi-dimensional end-to-end network slice generation method aiming at the defects of the prior art, the end-to-end network slice generation device and the method consider the difference of bandwidth resource requirements of two internet services, generate an end-to-end network slice from two dimensions of a user plane and a control plane, divide network resources on the user plane and the control plane, and meet the bandwidth resource requirements of the internet services.
The idea of the invention for realizing the above purpose is that a user plane network slice generation module divides computing and storage resources on a user plane according to different requirements of internet service bandwidth; setting different links, and dividing network data transmission priority and bandwidth resources; a control plane network slice generation module divides the same physical network topology into two virtual network topologies; the strategy control module makes different resource allocation strategies for the two networks and sends the strategies to the control plane network slice generation module; the control plane network slice generating module manages and controls the user plane network slices according to the received resource allocation strategy; and the user terminal accesses the Internet service through the user plane network slice to generate an end-to-end network slice from the user terminal to the Internet service end.
The invention discloses a multi-dimensional end-to-end network slice generation device, which comprises a user terminal, a strategy control module, an external interface, a user plane slice generation module and a control plane slice generation module, wherein the strategy control module is used for controlling the user terminal to generate a strategy; the user terminal is connected with the user plane slice generation module through an external interface, the user plane slice generation module is connected with the control plane slice generation module through the external interface, and the control plane slice generation module is connected with the strategy control module through the external interface; wherein the content of the first and second substances,
the user terminal is used for generating a multi-dimensional end-to-end network slice, the user terminal accesses the user plane network slice through the wireless access point, the control plane network slice forwards the flow in the user plane network slice according to the generated flow table, the user plane network slice is connected to the application container through a Transmission Control Protocol (TCP), and the application container is connected to the internet service through a hypertext transfer protocol (HTTP) to generate the multi-dimensional end-to-end network slice.
The user plane slice generating module comprises a container generating module, a wireless router, a wireless network card and a wireless access point and is used for generating user plane network slices; the container generation module generates a high bandwidth demand container and a low bandwidth demand container corresponding to the two internet services with high and low bandwidth demands; the user plane slice generation module marks each frame of the Ethernet passing through the port of the wireless router, divides the wireless network card of the wireless router into two wireless access points, and two Internet services with high and low bandwidth requirements are accessed into two wired links of the wireless router through the two wireless access points; the user plane slice generating module respectively creates two data forwarding queues for two wired links, each data forwarding queue corresponds to one wired link, one wired link is set as a high-bandwidth-demand link with high network bandwidth and high data forwarding priority by the data forwarding queues, the other wired link is set as a low-bandwidth-demand link with low network bandwidth and low data forwarding priority by the data forwarding queues, and a high-bandwidth-demand container and a low-bandwidth-demand container are respectively accessed into the high-bandwidth-demand link and the low-bandwidth-demand link from a virtual network port of the container to generate a user plane network slice; the user plane slice generation module mounts the high bandwidth demand link and the low bandwidth demand link into the control plane slice generation module;
the control surface slice generation module comprises an SDN controller, a user surface network virtualization platform and a control surface network virtualization platform and is used for generating control surface network slices, the control surface slice generation module acquires nodes and links in a network by using a network data packet forwarding rule specified by a southbound interface protocol, acquires a global physical network topology from a high-bandwidth demand link and a low-bandwidth demand link, and virtualizes the acquired global physical network topology into two virtual network topologies; a control plane network virtualization platform appoints a target IP address, a target physical address and a target port for a Software Defined Network (SDN) controller according to a flow space rule, the SDN controller analyzes network nodes and links of a virtual network topology through a southbound interface protocol, and if a high-bandwidth required link exists in the virtual network topology, a high-bandwidth strategy request is sent to a strategy control module through the flow space rule; if a low bandwidth demand link exists in the virtual network topology, sending a low bandwidth policy request to a policy control module through a flow space rule; the SDN controller receives a high-priority data forwarding strategy and a low-priority data forwarding strategy through a northbound interface protocol, and identifies characteristic identification symbols in the received high-priority data forwarding strategy and the received low-priority data forwarding strategy; if the characteristic identifier is 200, judging as a high-priority data forwarding strategy, and if the characteristic identifier is 100, judging as a low-priority data forwarding strategy; the SDN controller stores a destination IP address and a destination physical address of a link with high and low bandwidth requirements into a forwarding information table (FIB); the SDN controller acquires data packets in a high-priority data forwarding strategy and a low-priority data forwarding strategy through an IP protocol; the SDN controller forwards a target IP address and a target physical address of a high-bandwidth-demand link in the FIB to a data packet of a high-priority data forwarding strategy, and forwards a target IP address and a target physical address of a low-bandwidth-demand link in the FIB to a data packet of a low-priority data forwarding strategy; extracting a destination IP address and a destination physical address of each data packet in a high-priority and low-priority data forwarding strategy by the SDN controller, and dividing the data packets with the same destination IP address and destination physical address into one flow; the SDN controller stores the searching times, the packet receiving and sending, the survival time, the receiving condition and the discarding condition of each data packet in each flow into an action table; the SDN controller forwards the searching times, the receiving and sending packets, the survival time, the receiving condition and the discarding condition in the action table to each flow, and assigns a destination address and a data transmission priority to each flow; the SDN controller counts the destination address and the data transmission priority of each flow to generate a flow table; the SDN controller issues the flow table to the wireless router through a southbound interface protocol to generate a control plane network slice;
the policy control module is used for making a control policy, acquiring a policy request from the SDN controller through a northbound interface protocol, adding a characteristic identifier symbol set to be 200 into network flow from the SDN controller, and setting the characteristic identifier symbol as a high-priority data forwarding policy; adding a characteristic identifier symbol set to be 100 into network flow from an SDN controller by a policy control module, and setting the characteristic identifier symbol as a low-priority data forwarding policy; and the policy control module issues the formulated high-low priority data forwarding policy to the corresponding SDN controller through a northbound interface protocol.
The method comprises the following steps:
step 1, creating an application container:
the container generation module generates a high bandwidth demand container and a low bandwidth demand container corresponding to the two internet services with high and low bandwidth demands;
step 2, generating a user plane network slice:
the user plane slice generation module marks each frame of the Ethernet passing through the port of the wireless router, divides the wireless network card of the wireless router into two wireless access points, and two Internet services with high and low bandwidth requirements are accessed into two wired links of the wireless router through the two wireless access points;
the user plane slice generating module respectively creates two data forwarding queues for two wired links, each data forwarding queue corresponds to one wired link, one wired link is set as a high-bandwidth-demand link with high network bandwidth and high data forwarding priority by the data forwarding queues, the other wired link is set as a low-bandwidth-demand link with low network bandwidth and low data forwarding priority by the data forwarding queues, and a high-bandwidth-demand container and a low-bandwidth-demand container are respectively accessed into the high-bandwidth-demand link and the low-bandwidth-demand link from a virtual network port of the container to generate a user plane network slice;
step 3, dividing the virtual network according to the stream space rule:
the user plane slice generation module mounts the high-bandwidth demand link and the low-bandwidth demand link into the control plane slice generation module, the control plane slice generation module acquires nodes and links in a network by using a network data packet forwarding rule specified by a southbound interface protocol, acquires a global physical network topology from the high-bandwidth demand link and the low-bandwidth demand link, and the control plane slice generation module virtualizes the acquired global physical network topology into two virtual network topologies;
a user plane network virtualization platform in the control plane slice generation module appoints a destination IP address, a destination physical address and a destination port for each virtual network topology according to a flow space rule;
step 4, generating a control plane network slice:
the method comprises the steps that firstly, a control plane network virtualization platform appoints a target IP address, a target physical address and a target port for a Software Defined Network (SDN) controller according to flow space rules, the SDN controller analyzes network nodes and links of a virtual network topology through a southbound interface protocol, and if high-bandwidth required links exist in the virtual network topology, high-bandwidth strategy requests are sent to a strategy control module through the flow space rules; if a low bandwidth demand link exists in the virtual network topology, sending a low bandwidth policy request to a policy control module through a flow space rule;
secondly, a policy management and control module acquires a policy request from the SDN controller through a northbound interface protocol, and the policy management and control module adds a characteristic identifier symbol set to be 200 to network traffic from the SDN controller and sets the characteristic identifier symbol as a high-priority data forwarding policy; adding a characteristic identifier symbol set to be 100 into network flow from an SDN controller by a policy control module, and setting the characteristic identifier symbol as a low-priority data forwarding policy; the strategy control module issues the formulated high-low priority data forwarding strategy to the corresponding SDN controller through a northbound interface protocol;
thirdly, the SDN controller receives the high-low priority data forwarding strategy through a northbound interface protocol and identifies the characteristic identifier in the received high-low priority data forwarding strategy; if the characteristic identifier is 200, judging as a high-priority data forwarding strategy, and if the characteristic identifier is 100, judging as a low-priority data forwarding strategy; the SDN controller stores a destination IP address and a destination physical address of a link with high and low bandwidth requirements into a forwarding information table (FIB); the SDN controller acquires data packets in a high-priority data forwarding strategy and a low-priority data forwarding strategy through an IP protocol; the SDN controller forwards a target IP address and a target physical address of a high-bandwidth-demand link in the FIB to a data packet of a high-priority data forwarding strategy, and forwards a target IP address and a target physical address of a low-bandwidth-demand link in the FIB to a data packet of a low-priority data forwarding strategy; extracting a destination IP address and a destination physical address of each data packet in a high-priority and low-priority data forwarding strategy by the SDN controller, and dividing the data packets with the same destination IP address and destination physical address into one flow; the SDN controller stores the searching times, the packet receiving and sending, the survival time, the receiving condition and the discarding condition of each data packet in each flow into an action table; the SDN controller forwards the searching times, the receiving and sending packets, the survival time, the receiving condition and the discarding condition in the action table to each flow, and assigns a destination address and a data transmission priority to each flow; the SDN controller counts the destination address and the data transmission priority of each flow to generate a flow table; the SDN controller issues the flow table to the wireless router through a southbound interface protocol to generate a control plane network slice;
step 5, generating a multidimensional end-to-end network slice:
the user terminal accesses the user plane network slice through the wireless access point, the control plane network slice forwards the flow in the user plane network slice according to the generated flow table, the user plane network slice is connected to the application container through a Transmission Control Protocol (TCP), and the application container is connected to the internet service through a hypertext transfer protocol (HTTP) to generate the multi-dimensional end-to-end network slice.
Compared with the prior art, the invention has the following advantages:
firstly, a control plane slice generating module in the multi-dimensional end-to-end network slice generating device acquires nodes and links in a network by using a network data packet forwarding rule specified by a southbound interface protocol, and acquires a global physical network topology from a high bandwidth demand link and a low bandwidth demand link, so that the problem that the generating module in the prior art generates an abstract topology corresponding to a network slice by adopting a universal template, and the universal abstract topology generated by the generating module cannot accurately reflect the actual connection condition between network function units is solved, the device can accurately acquire the actual connection condition between the network function units, and the working stability of the control plane network slice is improved; the strategy control module can adjust the setting of the control plane network slice according to the actual connection condition between the network function units, so that the work of maintaining the end-to-end network slice is facilitated.
Secondly, the user plane slice generating module in the multi-dimensional end-to-end network slice generating device marks each frame of the ethernet passing through the port of the wireless router, divides the wireless network card of the wireless router into two wireless access points, and overcomes the problems that in the prior art, a system needs a request acquiring unit to send a creation instruction and then a command sending unit selects a network function virtualization orchestrator to create a network slice, network resources are only divided on a control plane, the user plane only sends a generation request, and the resource division is not thorough, so that the user plane slice generating module can divide the wireless resources of the user plane, and the network resource division efficiency of the end-to-end network slice is improved.
Thirdly, in the multi-dimensional end-to-end network slice generating method of the present invention, the data forwarding queue sets one wired link as a high bandwidth demand link with high network bandwidth and high data forwarding priority, sets the other wired link as a low bandwidth demand link with low network bandwidth and low data forwarding priority, and the high bandwidth demand container and the low bandwidth demand container are respectively accessed to the high bandwidth demand link and the low bandwidth demand link from the virtual network port of the container to generate the user plane network slice.
Fourthly, in the multi-dimensional end-to-end network slice generating method of the present invention, the user plane network virtualization platform in the control plane slice generating module assigns a destination IP address, a destination physical address, and a destination port to each virtual network topology according to the stream space rule, thereby overcoming the problem that in the prior art, when a network slice generating device receives a plurality of network slice generating requests with similar network requirements, the same general template is adopted to generate the same type of abstract topology according to the slice generating request, so that the end-to-end network slice generating method of the present invention can generate different types of abstract topologies according to different network requirements, and improves the working stability of end-to-end network slices.
Drawings
FIG. 1 is a block diagram of the apparatus of the present invention;
FIG. 2 is a flow chart of the method of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The multi-dimensional end-to-end network slice generation apparatus of the present invention is further described with reference to fig. 1.
The multi-dimensional end-to-end network slice generation device comprises a user terminal, a strategy control module, an external interface, a user plane slice generation module and a control plane slice generation module.
The user terminal is connected with the user plane slice generating module through an external interface, the user plane slice generating module is connected with the control plane slice generating module through the external interface, and the control plane slice generating module is connected with the strategy control module through the external interface.
The user terminal is used for generating a multi-dimensional end-to-end network slice, the user terminal accesses the user plane network slice through the wireless access point, the control plane network slice forwards the flow in the user plane network slice according to the generated flow table, the user plane network slice is connected to the application container through a Transmission Control Protocol (TCP), and the application container is connected to the internet service through a hypertext transfer protocol (HTTP) to generate the multi-dimensional end-to-end network slice.
The user plane slice generating module comprises a container generating module, a wireless router, a wireless network card and a wireless access point and is used for generating the user plane network slice. The container generation module generates a high bandwidth demand container and a low bandwidth demand container corresponding to two high and low bandwidth demand internet services. The user plane slice generation module marks each frame of the Ethernet passing through the port of the wireless router, divides the wireless network card of the wireless router into two wireless access points, and two Internet services with high and low bandwidth requirements access two wired links of the wireless router through the two wireless access points. The user plane slice generation module respectively creates two data forwarding queues for two wired links, each data forwarding queue corresponds to one wired link, one wired link is set as a high-bandwidth-demand link with high network bandwidth and high data forwarding priority by the data forwarding queues, the other wired link is set as a low-bandwidth-demand link with low network bandwidth and low data forwarding priority by the data forwarding queues, and the high-bandwidth-demand container and the low-bandwidth-demand container are respectively accessed into the high-bandwidth-demand link and the low-bandwidth-demand link from virtual network ports of the containers to generate user plane network slices. And the user plane slice generation module mounts the high-bandwidth-demand link and the low-bandwidth-demand link into the control plane slice generation module.
The control surface slice generation module comprises an SDN controller, a user surface network virtualization platform and a control surface network virtualization platform and is used for generating control surface network slices, the control surface slice generation module acquires nodes and links in a network by using a network data packet forwarding rule specified by a southbound interface protocol, acquires a global physical network topology from a high bandwidth demand link and a low bandwidth demand link, and virtualizes the acquired global physical network topology into two virtual network topologies. The control plane network virtualization platform appoints a target IP address, a target physical address and a target port for a Software Defined Network (SDN) controller according to flow space rules, the SDN controller analyzes network nodes and links of a virtual network topology through a southbound interface protocol, and if high-bandwidth required links exist in the virtual network topology, high-bandwidth strategy requests are sent to a strategy control module through the flow space rules. And if the virtual network topology has a low bandwidth demand link, sending a low bandwidth policy request to the policy control module through the flow space rule. And the SDN controller receives the high-priority and low-priority data forwarding strategies through a northbound interface protocol and identifies the characteristic identifier symbols in the received high-priority and low-priority data forwarding strategies. And if the characteristic identifier is 200, judging the high-priority data forwarding strategy. If the characteristic identifier is 100, determining the low-priority data forwarding strategy. And the SDN controller stores the destination IP address and the destination physical address of the link with high and low bandwidth requirements into a forwarding information table (FIB). And the SDN controller acquires data packets in the high-priority and low-priority data forwarding strategies through an IP protocol. And the SDN controller forwards the destination IP address and the destination physical address of the high-bandwidth-demand link in the FIB to the data packet of the high-priority data forwarding strategy, and forwards the destination IP address and the destination physical address of the low-bandwidth-demand link in the FIB to the data packet of the low-priority data forwarding strategy. The SDN controller extracts a destination IP address and a destination physical address of each data packet in the high-priority and low-priority data forwarding strategies, and divides the data packets with the same destination IP address and destination physical address into one flow. The SDN controller stores the number of times of searching, packet receiving and sending, survival time, receiving condition and discarding condition of each data packet in each flow into an action table. And forwarding the lookup times, the transceiving packets, the survival time, the receiving condition and the discarding condition in the action table to each flow by the SDN controller, and assigning a destination address and a data transmission priority to each flow. And the SDN controller counts the destination address and the data transmission priority of each flow to generate a flow table. And the SDN controller issues the flow table to the wireless router through a southbound interface protocol to generate a control plane network slice.
The policy management and control module is used for making a management and control policy, the policy management and control module acquires a policy request from the SDN controller through a northbound interface protocol, and the policy management and control module adds a characteristic identifier symbol set to be 200 to network flow from the SDN controller and sets the characteristic identifier symbol as a high-priority data forwarding policy. The policy management and control module adds a feature identifier set to 100 to the network traffic from the SDN controller, and sets the feature identifier as a low-priority data forwarding policy. And the policy control module issues the formulated high-low priority data forwarding policy to the corresponding SDN controller through a northbound interface protocol.
The multi-dimensional end-to-end network slice generation method of the present invention is further described with reference to fig. 2.
Step 1, creating an application container.
The container generation module generates a high bandwidth demand container and a low bandwidth demand container corresponding to two high and low bandwidth demand internet services. For example, for online video service settings.
And 2, generating a user plane network slice.
The user plane slice generation module marks each frame of the Ethernet passing through the port of the wireless router, divides the wireless network card of the wireless router into two wireless access points, and two Internet services with high and low bandwidth requirements access two wired links of the wireless router through the two wireless access points.
The user plane slice generation module respectively creates two data forwarding queues for two wired links, each data forwarding queue corresponds to one wired link, one wired link is set as a high-bandwidth-demand link with high network bandwidth and high data forwarding priority by the data forwarding queues, the other wired link is set as a low-bandwidth-demand link with low network bandwidth and low data forwarding priority by the data forwarding queues, and the high-bandwidth-demand container and the low-bandwidth-demand container are respectively accessed into the high-bandwidth-demand link and the low-bandwidth-demand link from virtual network ports of the containers to generate user plane network slices.
And 3, dividing the virtual network according to the stream space rule.
The user plane slice generation module mounts the high-bandwidth demand link and the low-bandwidth demand link into the control plane slice generation module, the control plane slice generation module obtains nodes and links in a network by using a network data packet forwarding rule specified by a southbound interface protocol, obtains a global physical network topology from the high-bandwidth demand link and the low-bandwidth demand link, and the control plane slice generation module virtualizes the obtained global physical network topology into two virtual network topologies.
And a user plane network virtualization platform in the control plane slice generation module appoints a destination IP address, a destination physical address and a destination port for each virtual network topology according to a flow space rule. The flow space rule means that in a software defined network, a network virtualization platform divides network traffic into a plurality of disconnected regions through message rewriting, and the regions are called flow spaces. The network flow is transmitted in a plurality of flow spaces to form a plurality of network links which are not connected with each other. The network virtualization platform assigns a destination IP address, a destination physical address, and a destination port to each network link. The network virtualization platform refers to a user plane network virtualization platform in step 3, and refers to a control plane network virtualization platform in step 4.
And 4, generating a control plane network slice.
The method comprises the steps that firstly, a control plane network virtualization platform appoints a target IP address, a target physical address and a target port for a Software Defined Network (SDN) controller according to flow space rules, the SDN controller analyzes network nodes and links of a virtual network topology through a southbound interface protocol, and if high-bandwidth required links exist in the virtual network topology, high-bandwidth strategy requests are sent to a strategy control module through the flow space rules. And if the virtual network topology has a low bandwidth demand link, sending a low bandwidth policy request to the policy control module through the flow space rule.
And secondly, the policy control module acquires a policy request from the SDN controller through a northbound interface protocol, adds a characteristic identifier symbol set to be 200 to network flow from the SDN controller, and sets the characteristic identifier symbol as a high-priority data forwarding policy. The policy management and control module adds a feature identifier set to 100 to the network traffic from the SDN controller, and sets the feature identifier as a low-priority data forwarding policy. And the policy control module issues the formulated high-low priority data forwarding policy to the corresponding SDN controller through a northbound interface protocol.
And thirdly, the SDN controller receives the high-low priority data forwarding strategy through a northbound interface protocol, and identifies the characteristic identifier in the received high-low priority data forwarding strategy. If the characteristic identifier is 200, the data forwarding strategy is judged to be high priority data forwarding strategy, and if the characteristic identifier is 100, the data forwarding strategy is judged to be low priority data forwarding strategy. And the SDN controller stores the destination IP address and the destination physical address of the link with high and low bandwidth requirements into a forwarding information table (FIB). And the SDN controller acquires data packets in the high-priority and low-priority data forwarding strategies through an IP protocol. And the SDN controller forwards the destination IP address and the destination physical address of the high-bandwidth-demand link in the FIB to the data packet of the high-priority data forwarding strategy, and forwards the destination IP address and the destination physical address of the low-bandwidth-demand link in the FIB to the data packet of the low-priority data forwarding strategy. The SDN controller extracts a destination IP address and a destination physical address of each data packet in the high-priority and low-priority data forwarding strategies, and divides the data packets with the same destination IP address and destination physical address into one flow. The SDN controller stores the number of times of searching, packet receiving and sending, survival time, receiving condition and discarding condition of each data packet in each flow into an action table. And forwarding the lookup times, the transceiving packets, the survival time, the receiving condition and the discarding condition in the action table to each flow by the SDN controller, and assigning a destination address and a data transmission priority to each flow. And the SDN controller counts the destination address and the data transmission priority of each flow to generate a flow table. And the SDN controller issues the flow table to the wireless router through a southbound interface protocol to generate a control plane network slice.
And 5, generating a multi-dimensional end-to-end network slice.
The user terminal accesses the user plane network slice through the wireless access point, the control plane network slice forwards the flow in the user plane network slice according to the generated flow table, the user plane network slice is connected to the application container through a Transmission Control Protocol (TCP), and the application container is connected to the internet service through a hypertext transfer protocol (HTTP) to generate the multi-dimensional end-to-end network slice.
Claims (3)
1. A multi-dimensional end-to-end network slice generation device comprises a user terminal, a strategy control module and an external interface, and is characterized by also comprising a user plane slice generation module and a control plane slice generation module; the user terminal is connected with the user plane slice generation module through an external interface, the user plane slice generation module is connected with the control plane slice generation module through the external interface, and the control plane slice generation module is connected with the strategy control module through the external interface; wherein the content of the first and second substances,
the user terminal is used for generating a multi-dimensional end-to-end network slice, the user terminal accesses the user plane network slice through a wireless access point, the control plane network slice forwards the flow in the user plane network slice according to the generated flow table, the user plane network slice is connected to an application container through a Transmission Control Protocol (TCP), and the application container is connected to the Internet service through a hypertext transfer protocol (HTTP) to generate the multi-dimensional end-to-end network slice;
the user plane slice generating module comprises a container generating module, a wireless router, a wireless network card and a wireless access point and is used for generating user plane network slices; the container generation module generates a high bandwidth demand container and a low bandwidth demand container corresponding to the two internet services with high and low bandwidth demands; the user plane slice generation module marks each frame of the Ethernet passing through the port of the wireless router, divides the wireless network card of the wireless router into two wireless access points, and two Internet services with high and low bandwidth requirements are accessed into two wired links of the wireless router through the two wireless access points; the user plane slice generating module respectively creates two data forwarding queues for two wired links, each data forwarding queue corresponds to one wired link, one wired link is set as a high-bandwidth-demand link with high network bandwidth and high data forwarding priority by the data forwarding queues, the other wired link is set as a low-bandwidth-demand link with low network bandwidth and low data forwarding priority by the data forwarding queues, and a high-bandwidth-demand container and a low-bandwidth-demand container are respectively accessed into the high-bandwidth-demand link and the low-bandwidth-demand link from a virtual network port of the container to generate a user plane network slice; the user plane slice generation module mounts the high bandwidth demand link and the low bandwidth demand link into the control plane slice generation module;
the control surface slice generation module comprises an SDN controller, a user surface network virtualization platform and a control surface network virtualization platform and is used for generating control surface network slices, the control surface slice generation module acquires nodes and links in a network by using a network data packet forwarding rule specified by a southbound interface protocol, acquires a global physical network topology from a high-bandwidth demand link and a low-bandwidth demand link, and virtualizes the acquired global physical network topology into two virtual network topologies; a control plane network virtualization platform appoints a target IP address, a target physical address and a target port for a Software Defined Network (SDN) controller according to a flow space rule, the SDN controller analyzes network nodes and links of a virtual network topology through a southbound interface protocol, and if a high-bandwidth required link exists in the virtual network topology, a high-bandwidth strategy request is sent to a strategy control module through the flow space rule; if a low bandwidth demand link exists in the virtual network topology, sending a low bandwidth policy request to a policy control module through a flow space rule; the SDN controller receives a high-priority data forwarding strategy and a low-priority data forwarding strategy through a northbound interface protocol, and identifies characteristic identification symbols in the received high-priority data forwarding strategy and the received low-priority data forwarding strategy; if the characteristic identifier is 200, judging as a high-priority data forwarding strategy, and if the characteristic identifier is 100, judging as a low-priority data forwarding strategy; the SDN controller stores a destination IP address and a destination physical address of a link with high and low bandwidth requirements into a forwarding information table (FIB); the SDN controller acquires data packets in a high-priority data forwarding strategy and a low-priority data forwarding strategy through an IP protocol; the SDN controller forwards a target IP address and a target physical address of a high-bandwidth-demand link in the FIB to a data packet of a high-priority data forwarding strategy, and forwards a target IP address and a target physical address of a low-bandwidth-demand link in the FIB to a data packet of a low-priority data forwarding strategy; extracting a destination IP address and a destination physical address of each data packet in a high-priority and low-priority data forwarding strategy by the SDN controller, and dividing the data packets with the same destination IP address and destination physical address into one flow; the SDN controller stores the searching times, the packet receiving and sending, the survival time, the receiving condition and the discarding condition of each data packet in each flow into an action table; the SDN controller forwards the searching times, the receiving and sending packets, the survival time, the receiving condition and the discarding condition in the action table to each flow, and assigns a destination address and a data transmission priority to each flow; the SDN controller counts the destination address and the data transmission priority of each flow to generate a flow table; the SDN controller issues the flow table to the wireless router through a southbound interface protocol to generate a control plane network slice;
the policy control module is used for making a control policy, acquiring a policy request from the SDN controller through a northbound interface protocol, adding a characteristic identifier symbol set to be 200 into network flow from the SDN controller, and setting the characteristic identifier symbol as a high-priority data forwarding policy; adding a characteristic identifier symbol set to be 100 into network flow from an SDN controller by a policy control module, and setting the characteristic identifier symbol as a low-priority data forwarding policy; and the policy control module issues the formulated high-low priority data forwarding policy to the corresponding SDN controller through a northbound interface protocol.
2. The method for generating network slices according to claim 1, wherein the network slices are generated by dividing wireless access points to create data forwarding queues; dividing a virtual network by setting a flow space rule to generate a control plane network slice; generating a multidimensional end-to-end network slice; the method comprises the following steps:
step 1, creating an application container:
the container generation module generates a high bandwidth demand container and a low bandwidth demand container corresponding to the two internet services with high and low bandwidth demands;
step 2, generating a user plane network slice:
the user plane slice generation module marks each frame of the Ethernet passing through the port of the wireless router, divides the wireless network card of the wireless router into two wireless access points, and two Internet services with high and low bandwidth requirements are accessed into two wired links of the wireless router through the two wireless access points;
the user plane slice generating module respectively creates two data forwarding queues for two wired links, each data forwarding queue corresponds to one wired link, one wired link is set as a high-bandwidth-demand link with high network bandwidth and high data forwarding priority by the data forwarding queues, the other wired link is set as a low-bandwidth-demand link with low network bandwidth and low data forwarding priority by the data forwarding queues, and a high-bandwidth-demand container and a low-bandwidth-demand container are respectively accessed into the high-bandwidth-demand link and the low-bandwidth-demand link from a virtual network port of the container to generate a user plane network slice;
step 3, dividing the virtual network according to the stream space rule:
the user plane slice generation module mounts the high-bandwidth demand link and the low-bandwidth demand link into the control plane slice generation module, the control plane slice generation module acquires nodes and links in a network by using a network data packet forwarding rule specified by a southbound interface protocol, acquires a global physical network topology from the high-bandwidth demand link and the low-bandwidth demand link, and the control plane slice generation module virtualizes the acquired global physical network topology into two virtual network topologies;
a user plane network virtualization platform in the control plane slice generation module appoints a destination IP address, a destination physical address and a destination port for each virtual network topology according to a flow space rule;
step 4, generating a control plane network slice:
the method comprises the steps that firstly, a control plane network virtualization platform appoints a target IP address, a target physical address and a target port for a Software Defined Network (SDN) controller according to flow space rules, the SDN controller analyzes network nodes and links of a virtual network topology through a southbound interface protocol, and if high-bandwidth required links exist in the virtual network topology, high-bandwidth strategy requests are sent to a strategy control module through the flow space rules; if a low bandwidth demand link exists in the virtual network topology, sending a low bandwidth policy request to a policy control module through a flow space rule;
secondly, a policy management and control module acquires a policy request from the SDN controller through a northbound interface protocol, and the policy management and control module adds a characteristic identifier symbol set to be 200 to network traffic from the SDN controller and sets the characteristic identifier symbol as a high-priority data forwarding policy; adding a characteristic identifier symbol set to be 100 into network flow from an SDN controller by a policy control module, and setting the characteristic identifier symbol as a low-priority data forwarding policy; the strategy control module issues the formulated high-low priority data forwarding strategy to the corresponding SDN controller through a northbound interface protocol;
thirdly, the SDN controller receives the high-low priority data forwarding strategy through a northbound interface protocol and identifies the characteristic identifier in the received high-low priority data forwarding strategy; if the characteristic identifier is 200, judging as a high-priority data forwarding strategy, and if the characteristic identifier is 100, judging as a low-priority data forwarding strategy; the SDN controller stores a destination IP address and a destination physical address of a link with high and low bandwidth requirements into a forwarding information table (FIB); the SDN controller acquires data packets in a high-priority data forwarding strategy and a low-priority data forwarding strategy through an IP protocol; the SDN controller forwards a target IP address and a target physical address of a high-bandwidth-demand link in the FIB to a data packet of a high-priority data forwarding strategy, and forwards a target IP address and a target physical address of a low-bandwidth-demand link in the FIB to a data packet of a low-priority data forwarding strategy; extracting a destination IP address and a destination physical address of each data packet in a high-priority and low-priority data forwarding strategy by the SDN controller, and dividing the data packets with the same destination IP address and destination physical address into one flow; the SDN controller stores the searching times, the packet receiving and sending, the survival time, the receiving condition and the discarding condition of each data packet in each flow into an action table; the SDN controller forwards the searching times, the receiving and sending packets, the survival time, the receiving condition and the discarding condition in the action table to each flow, and assigns a destination address and a data transmission priority to each flow; the SDN controller counts the destination address and the data transmission priority of each flow to generate a flow table; the SDN controller issues the flow table to the wireless router through a southbound interface protocol to generate a control plane network slice;
step 5, generating a multidimensional end-to-end network slice:
the user terminal accesses the user plane network slice through the wireless access point, the control plane network slice forwards the flow in the user plane network slice according to the generated flow table, the user plane network slice is connected to the application container through a Transmission Control Protocol (TCP), and the application container is connected to the internet service through a hypertext transfer protocol (HTTP) to generate the multi-dimensional end-to-end network slice.
3. The method according to claim 2, wherein the stream space rule in steps 3 and 4 means that in the software defined network, the network virtualization platform divides the network traffic into a plurality of disconnected regions, which are called stream spaces, by message rewriting; the network flow is transmitted in a plurality of flow spaces to form a plurality of network links which are not connected with each other; the network virtualization platform appoints a destination IP address, a destination physical address and a destination port for each network link; the network virtualization platform refers to a user plane network virtualization platform in step 3, and refers to a control plane network virtualization platform in step 4.
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| CN112887142B (en) * | 2021-01-26 | 2022-01-21 | 贵州大学 | Method for generating web application slice in virtualized wireless access edge cloud |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108770016A (en) * | 2018-06-04 | 2018-11-06 | 北京邮电大学 | 5G end to end network slice generation method based on template and device |
| CN109121185A (en) * | 2017-06-23 | 2019-01-01 | 中兴通讯股份有限公司 | The selection method and device, computer readable storage medium of network slice subnet |
| CN109150604A (en) * | 2018-08-20 | 2019-01-04 | 南瑞集团有限公司 | A kind of powerline network system based on SDN and cross-domain dicing method |
| CN110121190A (en) * | 2018-02-07 | 2019-08-13 | 中国移动通信有限公司研究院 | Data management method and device and computer readable storage medium |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107919969B (en) * | 2016-10-09 | 2019-09-17 | 中国移动通信有限公司研究院 | Policy control method and device |
| CN107426797B (en) * | 2017-04-28 | 2020-07-31 | 中国科学院计算技术研究所 | Slice management and control system and method for access network side |
| US10779186B2 (en) * | 2017-12-01 | 2020-09-15 | At&T Intellectual Property I, L.P. | Dynamic access slice pooling and software defined network controlled capabilities |
-
2019
- 2019-12-30 CN CN201911388913.4A patent/CN110995514B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121185A (en) * | 2017-06-23 | 2019-01-01 | 中兴通讯股份有限公司 | The selection method and device, computer readable storage medium of network slice subnet |
| CN110121190A (en) * | 2018-02-07 | 2019-08-13 | 中国移动通信有限公司研究院 | Data management method and device and computer readable storage medium |
| CN108770016A (en) * | 2018-06-04 | 2018-11-06 | 北京邮电大学 | 5G end to end network slice generation method based on template and device |
| CN109150604A (en) * | 2018-08-20 | 2019-01-04 | 南瑞集团有限公司 | A kind of powerline network system based on SDN and cross-domain dicing method |
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