CN117221111A - Network slice construction method and device, electronic equipment and readable storage medium - Google Patents
Network slice construction method and device, electronic equipment and readable storage medium Download PDFInfo
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Abstract
The application discloses a network slice building method, a device, electronic equipment and a readable storage medium, which are applied to the technical field of network communication, wherein the network slice building method comprises the following steps: determining a required slice type of target user equipment in a current application scene; constructing a basic network slice for the target user equipment according to the type of the required slice, wherein the basic network slice comprises a basic resource node set; screening the basic resource node set to obtain a resource providing node set matched with the building requirement of the target user equipment; and constructing a target network slice by mapping the target user equipment and the resource providing node set. The application solves the technical problem of low adaptability of the user equipment and the network slice.
Description
Technical Field
The present application relates to the field of network communications technologies, and in particular, to a method and apparatus for constructing a network slice, an electronic device, and a readable storage medium.
Background
With the continuous development of technology, the mobile internet is developed on the rise, and the architecture method adopted by the traditional network can not just meet the diversified performance requirements of the vertical market in terms of delay, expandability, reliability and the like, so that the network slicing technology is generated for serving various services with different performance requirements on the same underlying physical network.
In order to achieve the purpose of building network slices under different service demands, network function virtualization (network function virtualization, NFV) is a prerequisite, and functions of special equipment in a traditional network are carried by using general hardware equipment and a virtualization technology, so that expensive cost brought by building the special equipment can be reduced, and after the network function virtualization is performed, network functions meeting service conditions can be selected to build the network slices.
At present, in the construction process of a network slice, the network slices are usually distinguished through system services so as to construct unified network slices with limited network functions, such as an internet of things slice or an internet slice, but because different user equipment has different construction requirements on the network slices, the fixed network slices cannot be matched with the network functions of the user equipment, and further, the situation that the user experiences poor network service quality is easy to occur, so that the suitability of the current user equipment and the network slices is low.
Disclosure of Invention
The application mainly aims to provide a network slice building method, a device, electronic equipment and a readable storage medium, and aims to solve the technical problem of low suitability of user equipment and a network slice in the prior art.
In order to achieve the above object, the present application provides a network slice construction method, including:
determining a required slice type of target user equipment in a current application scene;
constructing a basic network slice for the target user equipment according to the type of the required slice, wherein the basic network slice comprises a basic resource node set;
screening the basic resource node set to obtain a resource providing node set matched with the building requirement of the target user equipment;
and constructing a target network slice by mapping the target user equipment and the resource providing node set.
In order to achieve the above object, the present application further provides a network slice building device, including:
the determining module is used for determining the type of the required slice of the target user equipment in the current application scene;
the first building module is used for building a basic network slice for the target user equipment according to the type of the required slice;
the screening module is used for screening the basic resource node set to obtain a resource providing node set matched with the building requirement of the target user equipment;
And the second building module is used for building a target network slice by mapping the target user equipment and the resource providing node set.
The application also provides an electronic device comprising: at least one processor and a memory communicatively coupled to the at least one processor, the memory storing instructions executable by the at least one processor to enable the at least one processor to perform the steps of the network slice building method as described above.
The present application also provides a computer readable storage medium, on which a program for implementing a network slice construction method is stored, which when executed by a processor implements the steps of the network slice construction method as described above.
The application also provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of a network slice building method as described above.
The application provides a network slice construction method, a device, electronic equipment and a readable storage medium, namely, a required slice type of target user equipment in the current application scene is determined; constructing a basic network slice for the target user equipment according to the type of the required slice, wherein the basic network slice comprises a basic resource node set; screening the basic resource node set to obtain a resource providing node set matched with the building requirement of the target user equipment; and constructing a target network slice by mapping the target user equipment and the resource providing node set.
In the process of constructing the network slice for the target user equipment, firstly, the type of the required slice of the target user equipment in the current application scene is determined, namely, the type of the network slice required by the target user equipment is determined differentially according to the actual service scene of the target user equipment, then, the basic network slice is constructed according to the type of the required network slice, the purpose that the network function provided by the network slice is matched with the actual service scene can be achieved, then, the construction requirement of the target user equipment is taken as a screening condition, the basic resource node set for constructing the basic network slice is screened to obtain a resource providing node set for actually providing the network function for the target user equipment, and finally, the target network slice is constructed according to the mapping between the target user equipment and the resource providing node set, so that the purpose that the network function provided by the target network slice is completely matched with the actual use requirement of the target user equipment can be achieved.
In the process of constructing the target network slice, not only the difference of the target user equipment on the network slice requirement in terms of scenerization is considered, but also the network function of the actual requirement under the basic network slice adapted by the target user equipment is considered, so that the basic physical nodes for providing network resources are screened, the physical nodes serving as resource providers for the actual requirement of the target user equipment are obtained, and finally the target network slice of the target application equipment is constructed, namely, the condition that the network function is provided by adopting unified network slices for different user equipment is avoided.
Based on the above, in the process of completing the construction of the target network slice for the target user equipment, the application obtains the resource providing node set matched with the construction requirement of the target user equipment by determining the basic resource node set of the current application scene of the target user equipment and screening the basic resource node set, thereby enabling the resource providing node set for constructing the target network slice to provide the network function of the actual requirement of the target user equipment. Rather than just setting unified network slices for different user devices based on system services. Therefore, the situation that the network functions of the user equipment cannot be matched with the fixed network slices due to different requirements of different user equipment on the construction of the network slices is overcome, and further poor experience of the user on the network service quality is easy to occur is avoided, and therefore the suitability of the user equipment and the network slices is improved.
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The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic diagram of a network slice under different scenarios of a network slice building method according to a first embodiment of the present application;
fig. 2 is a schematic flow chart of a network slice building method according to a first embodiment of the present application;
fig. 3 is a schematic flow chart of a network slice building method according to a second embodiment of the present application;
fig. 4 is a schematic structural diagram of a network slice building device according to a third embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present application.
The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
In order to make the above objects, features and advantages of the present application more comprehensible, the following description of the embodiments accompanied with the accompanying drawings will be given in detail. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1
It should be understood that, firstly, in order to implement a differentiated network service provided for a user, an infrastructure is usually virtualized, and then a resource pool is formed after the virtualization processing, for example, in a 5G (5G th Generation Mobile Communication Technology, fifth generation mobile communication technology) network, different network slices can be constructed for different system services through a capability development platform to provide connection services for a specific business, a specific terminal or a specific area, referring to fig. 1, fig. 1 is a schematic diagram of the network slices in different scenarios, where a system deploying the capability development platform can divide part of resources from the resource pool into network functions according to service requirements given by the user to the system, and then network function modules forming the network slices are not presented in the form of physical hardware, but are decoupled to form virtual network functions, and the network slices are based on supported services, and network function combinations capable of meeting service conditions are selected to form the network slices, which is also called network virtualization. However, in the existing process of constructing the network slice through network virtualization, a unified network slice is constructed only according to system services, so that the constructed network slice can only provide limited network functions, the constructed network slice is not constructed according to the optimal construction strategy of the network slice, and because the constructed function in the construction process does not consider whether the constructed function is matched with the actual scene of the user, the resource requirement of the user equipment in the actual application scene is not attached to the network function provided by the network slice easily, and the differentiated function requirement of different user equipment depending on the unified network slice is not reflected, so that the problem that the network function is poor exists in the current constructed network slice, the experience of the user on the network is directly reduced, and the product market is lost for operators.
In a first embodiment of the network slice building method, referring to fig. 2, the network slice building method includes:
step S10, determining a required slice type of target user equipment in a current application scene;
step S20, constructing a basic network slice for the target user equipment according to the type of the required slice, wherein the basic network slice comprises a basic resource node set;
step S30, screening the basic resource node set to obtain a resource providing node set matched with the building requirement of the target user equipment;
and step S40, a target network slice is built by mapping the target user equipment and the resource providing node set.
In this embodiment, it should be noted that, although fig. 2 shows a logic sequence, in some cases, the steps shown or described may be performed in a sequence different from that shown or described herein, where the network slice building method is applied to a network slice building system, where the network slice building system is deployed in a network slice building device, and the lens hardening system may be a CEP (capability exposure platform) specifically, for example, in an implementation manner, the capability opening platform may provide, by creating each virtual network element, network capability information such as telecommunication capability, terminal information, network resources, and network status to a target user device, where the function and performance implementation of the network slice mainly includes geographic coverage area, capacity, duration, capacity, speed, security, reliability, and the like, and in an existing network slice concept, it is generally required to perform continuous upgrade optimization by means of a backend intelligent policy, taking a 5G network service as an example, where the slice building policy is one of critical, and the best-effort of the slice building policy is able to provide telecommunication capability, terminal information, network resource, network status, and network quality of service may be directly affected by the existing network slice building system.
Additionally, it should be noted that, the target user equipment refers to user equipment that needs to perform network slice establishment, and may specifically be a fixed sensor, an internet mobile terminal, or an internet of things device, etc., where the current application scenario refers to a scenario actually encountered by the target user equipment at present, for example, in one implementation manner, it is assumed that the target user equipment is an automobile terminal, and different types of network slices may be accessed according to continuous system services; when the automobile terminal normally runs on a road, the target User Equipment (automobile terminal) can be connected to a public traffic network slice, the network slice comprises a plurality of automobile terminals which are connected to the network slice and are in a normal running scene, when the automobile terminal encounters driving conditions such as road congestion, the automobile terminal can be connected to a leisure network slice, a User can further listen to music, watch video and the like through the network slice, the type of the required slice is used for representing the type of the slice matched with the service requirement of the current application scene, the type of the required slice can be determined by the type of Equipment, the scene field or the service content of the User requirement, for example, in one embodiment, the UE (User Equipment) is provided with a service requirement list, default service content is displayed in the list, the content in the service requirement list can be adjusted according to the instruction input by the User in the preset interactive interface, such as adding service content, deleting service content and adjusting the existing service content in the service requirement list, after the User determines the service content in the current service list, the network slice type required in the current application scene of the User can be determined based on the preset relation according to the priority information corresponding to the service content and the service content, and further the corresponding network service can be provided for the target User Equipment through the required network slice type, wherein the service content can be specifically video multitask downloading content, communication multitask accessing content, stable communication content and the like, the service type specifically comprises an eMBB (Enhanced Mobile Broadband), an enhanced mobile broadband service application scene, an mMTC (Massive Machine Type Communication, large-scale machine communication) application scenes, ultra-reliable and Low Latency Communications (Ultra-high reliability and low-delay communication) application scenes and the like, corresponding basic network slices are constructed under different demand slice types, and the different application scenes can specifically comprise an access network, a transmission network, a core network and the like, and the characteristics of the basic network slices are as follows: 1) Mutual isolation between different network slices; 2) The network slice comprises a wireless network, a core network and a bearing network, and has the capability of independently providing end-to-end network services; 3) The mobile network and the network elements forming the network slice can be deployed independently or can be shared, namely, a network element can be shared by a plurality of different network slices; 4) Network slicing is a service for a single organization, which can provide relevant network resources and services for the organization; 5) The network function of the network slice requires the support of a terminal, and the terminal needs to select the slice; 6) The deployment of the network slice is realized by means of a powerful network slice building system.
Additionally, it should be noted that, the basic resource node set is used to characterize a set of basic physical nodes that provide network service capability for the basic network slice, for example, a mobile management node, a gateway GPRS support node, and a network node that provides resources, where the resource providing node set is used to characterize a set of physical nodes that matches actual usage requirements of a user and provides network service capability for the network slice, where the building requirement of the target user device may be specifically determined by the network slice building system based on an actual application scenario of the target user device, and when multiple physical nodes are included, there may be multiple types of building network slices that meet the user requirement for the target user device, where the emphasis of different network slices, for example, network slice a may be different, and network slice a may be focused on communication instantaneity, B may be focused on concurrency of communication, and so on the like, so that all the basic resource nodes of the basic resource node set that are not necessarily involved in building the basic resource node set for the target user device in network service are ultimately provided for the target user device, and in addition, mapping between the target user device and the resource providing nodes refers to mapping of resource capability between devices, specifically may be mapping of virtual functions to virtual functions, and mapping of virtual links to virtual functions to virtual links.
As an example, steps S10 to S30 include: acquiring service contents in a service demand list of target user equipment in a current application scene, and inquiring a demand slice type of the target user equipment in the current application scene by taking the service contents and priority information corresponding to the service contents as indexes; according to the type of the required slice, a network slicing technology is adopted to build a basic network slice for the target user equipment, wherein the basic network slice comprises a basic resource node set; screening the basic resource node set based on the building requirement of the target user equipment to obtain a basic resource node set consisting of at least one basic resource node; and mapping the basic network slice according to the mapping relation of at least one resource providing node between the target user equipment and the resource providing node set to obtain a target network slice.
In the process of constructing the network slice, the type of the network slice required by the target user equipment in the current application scene is determined in real time through the service content in the service demand list of the target user equipment, namely, the aim of pertinently matching different demand slice types for different application scenes is fulfilled, the foundation network slice is constructed by taking the demand slice type as the target user equipment, further, the construction demand of the target user equipment is taken as a screening condition, the resource providing node set for actually providing the network function for the target user equipment is screened in the foundation resource node set for constructing the foundation network slice, finally, the target network slice is constructed through the mapping between the target user equipment and the resource providing node set, and the aim that the network function provided by the target network slice is completely matched with the actual use demand of the target user equipment can be fulfilled.
The step of constructing a basic network slice for the target user equipment according to the requirement slice type comprises the following steps:
step A10, determining total occupied resources of a first physical node set corresponding to the first requirement slice type, wherein the first physical node set comprises at least one first physical node;
step A20, determining total scheduling resources of the first physical node set according to the total quantity of direct link, node capacity and corresponding link residual bandwidth of each first physical node;
and step A30, building the basic network slice for the target user equipment according to the total scheduling resources and the total occupied resources.
In this embodiment, it should be noted that, specifically, the first requirement slice type may be a slice requirement type in an eMBB scene, if a conventional network slice construction technology is still adopted for constructing a basic network slice for the first requirement slice scene, the actual emphasis of the network capability of the target user equipment in the application scene cannot be highlighted, specifically, for a service scene of the type, the target user equipment generally needs to provide a larger bandwidth and a communication rate for the network slice, so, in determining that the current requirement slice type of the target user equipment is an eMBB scene, the principle of constructing the network slice subsequently should provide the physical resource to the greatest extent, and provide the communication rate to the greatest extent, that is, on the basis that the deployment of the basic network slice should meet the physical bandwidth, the remaining physical resource of the first physical node set is maximized, so as to support the physical bandwidth and the communication rate required by the target user equipment in the scene, where the construction of the basic network slice in the eMBB scene may be implemented depending on the first slice construction algorithm.
Additionally, it should be noted that, the total scheduling resource refers to the total amount of resources of all the first physical nodes in the first physical node set scheduled by the network slice building system, and may be specifically expressed by CI (ni), where ni is used to represent the first physical node set, the total occupied resource refers to physical resources occupied when any one of the first physical nodes in the first physical node set scheduled by the network slice building system is built, and may be specifically expressed by Cr (nr), where nr is used to represent any one of the first physical nodes, the total amount of direct link refers to all links directly connected to the first physical node, the node capacity refers to the physical capacity of the first physical node, where the physical capacity is the rated channel capacity and the link bandwidth owned by a single physical node, and the link residual bandwidth refers to the residual bandwidth of any one of the links connected by the first physical node.
As an example, steps a10 to a30 include: acquiring a first physical node set corresponding to the first requirement slice type, and taking the sum of occupied resources of all first physical nodes in the first physical node set as the total occupied resources of the first physical node set; the total quantity of the direct link, the node capacity and the corresponding link residual bandwidth of each first physical node are input into a total scheduling resource calculation formula together, and the total scheduling resources of the first physical node set are calculated; and constructing a basic network slice of the target user equipment according to the total scheduling resources, the total occupied resources and a first slice construction algorithm.
The specific steps of inputting the total amount of the direct link, the node capacity and the corresponding link residual bandwidth of each first physical node into a total scheduling resource calculation formula, and calculating to obtain the total scheduling resource of the first physical node set are as follows:
CI(ni)＝C(i)∑ I∈s(i) BW(I)
wherein CI (ni) is total scheduling resource, C (I) is node capacity, s (I) is total direct link quantity, and BW (I) is residual bandwidth of any link I connected with the first physical node.
The specific steps of constructing the basic network slice of the target user equipment according to the total scheduling resources, the total occupied resources and a first slice construction algorithm are as follows:
wherein G is eMBB Is an underlying network slice in an eMBB scene.
The resources of the physical nodes are available resources in the physical equipment nodes for providing basic set network resources when the network slices are subsequently built and mapped; the single schedulable physical node resource is the sum of channel capacity and link bandwidth.
The step of determining the total occupied resources of the first physical node set corresponding to the first requirement slice type includes:
step B10, for any one of the first physical nodes, acquiring a first physical link between the first physical node and the target user equipment;
Step B20, calculating the occupation amount of the virtual resources of the first physical node according to the virtual resource parameters of the first physical link, and determining the multi-hop resource consumption amount of the first physical node under the first physical link;
step B30, taking the sum of the actual occupied resources of the first physical node, the multi-hop resource consumption and the virtual resource occupation as the occupied resources of the first physical node;
and step B40, taking the sum value of the occupied resources of the first physical nodes as the total occupied resources of the first physical node set.
In this embodiment, it should be noted that, in order to avoid performing actual resource occupation condition evaluation based on an actual physical node corresponding to a virtual network side, because a mapping between a target user device and a physical node is involved in a network slice building process, resource occupation conditions caused by physical node multi-hop and resource occupation conditions caused by using a virtual link are considered, so that in deployment, if only the actual resource occupation conditions are considered, the evaluation of total occupied resources of a first physical node set will be inaccurate, and thus the suitability between the network slice and the user device is affected, where the virtual resource occupation amount is used for characterizing resources occupied by using the virtual link, the multi-hop resource consumption is used for characterizing resources consumed due to node multi-hop, the virtual resource parameter is used for characterizing parameters for calculating the virtual resource occupation amount, and in particular, the multi-hop resource consumption amount can be obtained by specifically calculating the number of node hops passed by the first physical node in the physical path and the resource occupation amount of each hop.
As an example, steps B10 to B40 include: for any first physical node, acquiring a first physical link between the first physical node and the target user equipment; calculating the occupation amount of the virtual resources of the first physical node according to the virtual resource parameters of the first physical link, and determining the multi-hop resource consumption amount of the first physical node under the first physical link, wherein the specific formula for calculating the occupation amount of the virtual resources is as follows:
A1＝BS*hop*ε 1
wherein A1 is the occupation amount of virtual resources, BS is the physical link loan, hop is the length of the physical path corresponding to the virtual link connection, epsilon 1 The resource occupation amount of the link is used when the length is hop, wherein the specific formula for determining the multi-hop resource consumption amount is as follows:
A2＝jup*ε 2
wherein A2 is the multi-hop resource consumption, jup is the number of node hops, ε, that the first physical node passes through in the physical path 2 The resource occupation amount of each hop; actual occupation of the first physical nodeAdding the resources, the multi-hop resource consumption and the resource occupation to obtain the occupied resources of the first physical node, wherein the calculation formula of the occupied resources of the first physical node is as follows:
Cr(nr)＝Ce+A1+A2
Ce is an actually occupied resource of the first physical node; and adding the occupied resources of the first physical nodes to obtain the total occupied resources of the first physical node set.
The step of constructing a basic network slice for the target user equipment according to the requirement slice type comprises the following steps:
step C10, obtaining the total amount of scheduling resources of a second physical node set corresponding to the second demand slice type, wherein the second physical node set comprises at least one second physical node;
and step C20, constructing a basic network slice for the target user equipment according to the total scheduling resources and the total scheduling resources of the second node set.
In this embodiment, it should be noted that, the second requirement slice type may specifically be a slice requirement type in an mctc scenario, in which more device terminal accesses will exist at the target ue side, at this time, the primary requirement of the user is to consider the access stability of the user access, and ensure that the network is smooth and not congested after the access, and relatively neglect the experience of the user in the delay, so the principle of setting up the basic network slice should be to reduce the occupation of a large amount of physical bandwidth resources in the network slice, where the calculation manner of the total scheduling resources of the second physical node set may refer to the above, and the embodiment of the present application is not repeated herein.
As an example, steps C10 to C20 include: acquiring a second physical node set corresponding to a second demand slice type, and acquiring the total amount of scheduling resources of the second physical node set, wherein the total amount of scheduling resources can be integrated based on historical statistical results; and determining total scheduling resources of the second physical node set according to the total amount of direct link, node capacity and corresponding link residual bandwidth of each second physical node in the second physical node, and building a corresponding basic network slice for the target user equipment according to the total scheduling resources, the total amount of scheduling resources and a second slice building algorithm.
The specific steps of constructing a corresponding basic network slice for the target user equipment according to the total scheduling resources, the total scheduling resources and a second slice construction algorithm are as follows:
Max[G mMTC ]＝∑ ei CR(ei)-∑ eR Br(er)r ei
wherein Max [ G ] mMTC ]For basic network slicing in mctc scenario, CR (ei) is the total scheduled resource of the second node set, and Br (er) is the total scheduled resource.
The step of obtaining the total amount of scheduling resources of the second node set corresponding to the second requirement slice type includes:
step D10, for any second physical node, acquiring the processing time of the second physical node for processing preset data;
Step D20, calculating to obtain the network bandwidth of the second physical node according to the data size of the preset data and the processing time;
and step D30, calculating the total amount of the scheduling resources according to the transmission delay of the preset data under the network bandwidth and the network bandwidth.
In this embodiment, it should be noted that, in order to avoid that only the historical statistical result is considered when determining the total amount of the scheduled resources of the second physical node set, but the actual situation in the scene cannot be strictly evaluated, and finally, the problem that the evaluation result of the total amount of the scheduled resources deviates from the actual situation is caused, further, the embodiment of the application provides a technical means for evaluating the total amount of the scheduled resources of the second physical node set, which can be used for evaluating the schedulable resources provided by the second physical node set, thereby ensuring the evaluation accuracy of the total amount of the scheduled resources, and laying a foundation for improving the suitability between the network slice and the target user equipment, wherein in the mctc scene, mainly considering the capability that a single second physical node needs to provide as much concurrency and low delay as possible, so that each node needs to provide a larger bandwidth and a stronger instantaneous release flow capability, thereby ensuring a stable concurrency and reducing delay transmission.
As an example, steps D10 to D30 include: for any second physical node, acquiring the processing time of the second physical node for processing preset data; according to the data size of the preset data and the processing time, calculating to obtain the network bandwidth of the second physical node; and calculating the total amount of the scheduling resources according to the transmission delay of the preset data under the network bandwidth and the network bandwidth.
The specific steps of calculating the network bandwidth of the second physical node according to the data size of the preset data and the processing time are as follows:
wherein DK is the network bandwidth, alpha is the adjustment parameter of the computing capability of the second physical node, and f er 2 For the rated processing capacity of the er node, K represents the calculation complexity of each Bit of data, bit is the data size of preset data, and θ is an adjustment parameter.
The step of calculating the total amount of scheduling resources according to the transmission delay of the preset data under the network bandwidth and the network bandwidth includes:
wherein θ, μ 1 、μ 2 And when the calculation complexity of each bit of data is k, the er node carries the time delay of a transmission task of the data between two nodes with the length of Y, rel is the reliability degree of the second physical node, and the data can be obtained after the condition evaluation of the historical nodes, wherein the value range of the reliability degree is 0 to 1.
The step of constructing a basic network slice for the target user equipment according to the requirement slice type comprises the following steps:
e10, determining virtual links and physical links of a third physical node set corresponding to the third required slice type;
and E20, constructing a basic network slice for the target user equipment according to the mapping relation between the virtual link and the physical link.
In this embodiment, it should be noted that, the third requirement slice type may be specifically a slice requirement type in the ul lc scenario, where performance requirements in terms of throughput, delay, availability, and the like of the network service are higher, so the network slice establishment principle in the ul lc scenario needs to ensure the lowest network delay first, and at the same time, needs to ensure the minimization of the node hop count from the network layer, so when the third slicing algorithm is adopted to establish the base network slice in the ul lc scenario for the target user equipment, delay time is converted into hop count, and minimizing delay means that each physical path scenario needs to be minimized, where the virtual link may specifically include a virtual wireless link and a virtual wired link, and the physical link may specifically include a physical wireless link and a physical limited link, and the mapping relationship between the virtual link and the physical link may be characterized by whether the virtual link is mapped to the binary coefficient of the wired link.
As an example, steps E10 to E20 include: determining virtual links and physical links of a third physical node set corresponding to the third required slice type; and building the basic network slice of the target user equipment according to the mapping relation between the virtual link and the physical link and a third slicing algorithm.
The specific steps of building the basic network slice of the target user equipment according to the mapping relation between the virtual link and the physical link and the third slicing algorithm are as follows:
wherein,for virtual wireless link, +.>Virtual wired link, ">Physical radio link->A physical wired link is used to carry the data,binary coefficients indicating whether the virtual radio link is mapped onto the physical radio link, +.>Indicating whether the virtual wired link maps to a binary coefficient on the physical wired link.
The embodiment of the application provides a network slice construction method, namely, a required slice type of target user equipment in a current application scene is determined; constructing a basic network slice for the target user equipment according to the type of the required slice, wherein the basic network slice comprises a basic resource node set; screening the basic resource node set to obtain a resource providing node set matched with the building requirement of the target user equipment; and constructing a target network slice by mapping the target user equipment and the resource providing node set.
In the process of constructing the network slice for the target user equipment, firstly, the type of the required slice of the target user equipment in the current application scene is determined, namely, the type of the network slice required by the target user equipment is determined according to the actual service scene of the target user equipment in a distinguishing way, then, the basic network slice is constructed according to the type of the required network slice, the purpose that the network function provided by the network slice is matched with the actual service scene can be achieved, then, the construction requirement of the target user equipment is taken as a screening condition, the resource providing node set for actually providing the network function for the target user equipment is screened in the basic resource node set for constructing the basic network slice, and finally, the target network slice is constructed according to the mapping between the target user equipment and the resource providing node set, so that the purpose that the network function provided by the target network slice is completely matched with the actual use requirement of the target user equipment can be achieved.
In the process of constructing the target network slice, not only the difference of the target user equipment on the network slice requirement in terms of scenerization is considered, but also the network function of the actual requirement under the basic network slice adapted by the target user equipment is considered, so that the basic physical nodes for providing network resources are screened, the physical nodes serving as resource providers for the actual requirement of the target user equipment are obtained, and finally the target network slice of the target application equipment is constructed, namely, the condition that the network function is provided by adopting unified network slices for different user equipment is avoided.
Based on the above, in the process of completing the construction of the target network slice for the target user equipment, the application obtains the resource providing node set matched with the construction requirement of the target user equipment by determining the basic resource node set of the current application scene of the target user equipment and screening the basic resource node set, thereby enabling the resource providing node set for constructing the target network slice to provide the network function of the actual requirement of the target user equipment. Rather than just setting unified network slices for different user devices based on system services. Therefore, the situation that the network functions of the user equipment cannot be matched with the fixed network slices due to different requirements of different user equipment on the construction of the network slices is overcome, and further poor experience of the user on the network service quality is easy to occur is avoided, and therefore the suitability of the user equipment and the network slices is improved.
Example two
Further, referring to fig. 3, in another embodiment of the present application, the same or similar contents as those of the first embodiment may be referred to the description above, and will not be repeated. On the basis, the step of screening the basic resource node set to obtain the resource providing node set matched with the building requirement of the target user equipment comprises the following steps:
Step F10, selecting at least one basic resource node from the basic resource node set;
step F20, acquiring node operation parameters and link unit bandwidths of the basic resource nodes;
step F30, calculating to obtain the network slice construction cost of the target user equipment according to the node operation parameters and the link unit bandwidth;
and step F40, if the network slice construction cost is detected to be a preset construction cost threshold, taking all the basic resource nodes together as a resource providing node set matched with the construction requirement of the target user equipment.
In this embodiment, it should be noted that, after the basic network slice is built, the basic resource node meeting the actual user requirement may be selected by the following manner: 1) Initializing an infrastructure network, slicing sequences; 2) Setting adjustment parameters of physical node evaluation indexes according to the service types of network slices to be built currently; 3) And according to the calculation of the adjustment parameters, evaluating the comprehensive performance of the physical nodes, and carrying out ascending order sequencing on the physical nodes conforming to the capability to obtain N physical nodes with top ranks, and packaging the nodes to generate a physical node set corresponding to the service type of the deployment network slice, thereby obtaining a resource providing node set, wherein the specific mode of evaluating the performance is as follows:
Fn＝αUn+βLn+χHn
Wherein Fn is a comprehensive evaluation index of a physical node n, un is a processing resource occupied by the physical node, ln is a bandwidth resource occupied by all ports of the node, hn is an average distance between a physical facility corresponding to a server where a user is currently located and each corresponding mappable physical facility, and a sum of alpha, beta and χ is 1.
Additionally, it should be noted that, in the process of building the network slice, in addition to considering suitability between the network slice and the target user device, the building cost may be further estimated from the point of view of building cost, that is, after the set of base resource nodes is obtained, the building cost is further estimated by using each base resource node in the set, for example, in an implementation manner, a pre-selected building result with the lowest building cost may be selected as a scheme of finally building the target network slice, where the node operation parameter is used to represent a use parameter of the node in an operation state, for example, a maximum power of a physical device, a service life of a server, and the preset building cost threshold may be set by a builder based on actual requirements.
As an example, steps F10 to F40 include: randomly selecting at least one basic resource node from the basic resource node set; obtaining the maximum service power of each basic resource node and the service life of a server; according to the node operation parameters and the link unit bandwidth, calculating to obtain the network slice construction cost of the target user equipment; and if the network slice building cost is detected to be a preset building cost threshold, taking all the basic resource nodes together as a resource providing node set matched with the building requirement of the target user equipment.
The specific steps of calculating the network slice construction cost of the target user equipment according to the node operation parameters and the link unit bandwidth are as follows:
where Co is the cost of construction, βidf (t) is the maximum power of the physical device, and considering the difference in device performance, i.e., maximum power, the rental price is adjusted,when mapping a virtual wireless link onto a physical wireless link, the lease price of the physical device corresponding to the physical wireless link, wherein,
wherein S is a non-zero constant, r c (t) the remaining computing resources of the physical wireless link, βigf (t), is the server life span, which is low in stability as the server life span increases, so that in terms of cost of use, adjustments are made,when the virtual wireless link is mapped to the physical wireless link, the cost of the server corresponding to the virtual wireless link is lost, C fj (t) is the lease price corresponding to the unit bandwidth of the wireless physical link in the time slot t, b dg And (t) is the unit bandwidth of the wireless physical link in the time slot t.
The embodiment of the application provides a resource providing node set screening method, namely, at least one basic resource node is selected from the basic resource node set; acquiring node operation parameters and link unit bandwidths of the basic resource nodes; according to the node operation parameters and the link unit bandwidth, calculating to obtain the network slice construction cost of the target user equipment; and if the network slice building cost is detected to be a preset building cost threshold, taking all the basic resource nodes together as a resource providing node set matched with the building requirement of the target user equipment. According to the embodiment of the application, the construction cost problem of the target network slice is comprehensively evaluated by considering the operation parameters of the physical nodes and determining the cost of mapping the virtual link to the physical link when constructing the target network slice, and the construction cost of the network slice are simultaneously considered in the construction process of the network slice by selecting the construction cost price minimum resource providing node set from the basic resource node set.
Example III
The embodiment of the application also provides a network slice building device, referring to fig. 4, the network slice building device includes:
a determining module 101, configured to determine a required slice type of a target user equipment in a current application scenario;
a first building module 102, configured to build a basic network slice for the target user equipment according to the type of the required slice;
a screening module 103, configured to screen the basic resource node set to obtain a resource providing node set that matches the building requirement of the target user equipment;
and a second construction module 104, configured to construct a target network slice by mapping the target user equipment and the resource providing node set.
Optionally, the required slice type includes a first required slice type, and the first building module 102 is further configured to:
determining total occupied resources of a first physical node set corresponding to the first required slice type, wherein the first physical node set comprises at least one first physical node;
determining total scheduling resources of the first physical node set according to the total quantity of direct link of each first physical node, node capacity and corresponding link residual bandwidth;
And building the basic network slice for the target user equipment according to the total scheduling resources and the total occupied resources.
Optionally, the first building module 102 is further configured to:
for any first physical node, acquiring a first physical link between the first physical node and the target user equipment;
calculating the occupation amount of the virtual resources of the first physical node according to the virtual resource parameters of the first physical link, and determining the multi-hop resource consumption amount of the first physical node under the first physical link;
taking the sum of the actual occupied resources of the first physical node, the multi-hop resource consumption and the virtual resource occupation as the occupied resources of the first physical node;
and taking the sum value of the occupied resources of the first physical nodes as the total occupied resources of the first physical node set.
Optionally, the required slice type includes a second required slice type, and the first building module 102 is further configured to:
acquiring the total amount of scheduling resources of a second physical node set corresponding to the second demand slice type, wherein the second physical node set comprises at least one second physical node;
And constructing a basic network slice for the target user equipment according to the total scheduling resources and the total scheduling resources of the second node set.
Optionally, the first building module 102 is further configured to:
for any second physical node, acquiring the processing time of the second physical node for processing preset data;
according to the data size of the preset data and the processing time, calculating to obtain the network bandwidth of the second physical node;
and calculating the total amount of the scheduling resources according to the transmission delay of the preset data under the network bandwidth and the network bandwidth.
Optionally, the required slice type includes a third required slice type, and the first building module 102 is further configured to:
determining virtual links and physical links of a third physical node set corresponding to the third required slice type;
and building a basic network slice for the target user equipment according to the mapping relation between the virtual link and the physical link.
Optionally, the second building module 104 is further configured to:
selecting at least one basic resource node from the basic resource node set;
acquiring node operation parameters and link unit bandwidths of the basic resource nodes;
According to the node operation parameters and the link unit bandwidth, calculating to obtain the network slice construction cost of the target user equipment;
and if the network slice building cost is detected to be a preset building cost threshold, taking all the basic resource nodes together as a resource providing node set matched with the building requirement of the target user equipment.
The network slice building device provided by the invention solves the technical problem of low suitability of user equipment and network slices by adopting the network slice building method in the embodiment. Compared with the prior art, the network slice building device provided by the embodiment of the invention has the same beneficial effects as the network slice building method provided by the embodiment, and other technical features in the network slice building device are the same as the features disclosed by the method of the embodiment, and are not repeated herein.
Example IV
The embodiment of the invention provides electronic equipment, which comprises: at least one processor; and a memory communicatively coupled to the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can execute the network slice building method in the first embodiment.
Referring now to fig. 5, a schematic diagram of an electronic device suitable for use in implementing embodiments of the present disclosure is shown. The electronic devices in the embodiments of the present disclosure may include, but are not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and the like, and stationary terminals such as digital TVs, desktop computers, and the like. The electronic device shown in fig. 5 is merely an example and should not be construed to limit the functionality and scope of use of the disclosed embodiments.
As shown in fig. 5, the electronic device may include a processing apparatus 1001 (e.g., a central processing unit, a graphics processor, etc.), which may perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) 1002 or a program loaded from a storage apparatus 1003 into a Random Access Memory (RAM) 1004. In the RAM1004, various programs and data required for the operation of the electronic device are also stored. The processing device 1001, the ROM1002, and the RAM1004 are connected to each other by a bus 1005. An input/output (I/O) interface 1006 is also connected to the bus.
In general, the following systems may be connected to the I/O interface 1006: input devices 1007 including, for example, a touch screen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, and the like; an output device 1008 including, for example, a Liquid Crystal Display (LCD), a speaker, a vibrator, and the like; storage device 1003 including, for example, a magnetic tape, a hard disk, and the like; and communication means 1009. The communication means may allow the electronic device to communicate with other devices wirelessly or by wire to exchange data. While electronic devices having various systems are shown in the figures, it should be understood that not all of the illustrated systems are required to be implemented or provided. More or fewer systems may alternatively be implemented or provided.
In particular, according to embodiments of the present disclosure, the processes described above with reference to flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from a network via the communication device 1009, or installed from the storage device 1003, or installed from the ROM 1002. The above-described functions defined in the method of the embodiment of the present disclosure are performed when the computer program is executed by the processing device 1001.
The electronic equipment provided by the invention adopts the network slice building method in the embodiment, and solves the technical problem of low adaptability of the user equipment and the network slice. Compared with the prior art, the beneficial effects of the electronic device provided by the embodiment of the invention are the same as those of the network slice building method provided by the embodiment, and other technical features of the electronic device are the same as those disclosed by the method of the embodiment, so that the description is omitted herein.
It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Example five
The present embodiment provides a computer-readable storage medium having computer-readable program instructions stored thereon for performing the network slice construction method in the above-described embodiment.
The computer readable storage medium according to the embodiments of the present invention may be, for example, a usb disk, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this embodiment, a computer-readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, or device. Program code embodied on a computer readable storage medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, fiber optic cables, RF (radio frequency), and the like, or any suitable combination of the foregoing.
The above-described computer-readable storage medium may be contained in an electronic device; or may exist alone without being assembled into an electronic device.
The computer-readable storage medium carries one or more programs that, when executed by an electronic device, cause the electronic device to: determining a required slice type of target user equipment in a current application scene; constructing a basic network slice for the target user equipment according to the type of the required slice, wherein the basic network slice comprises a basic resource node set; screening the basic resource node set to obtain a resource providing node set matched with the building requirement of the target user equipment; and constructing a target network slice by mapping the target user equipment and the resource providing node set.
Computer program code for carrying out operations of the present disclosure may be written in one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The modules described in the embodiments of the present disclosure may be implemented in software or hardware. Wherein the name of the module does not constitute a limitation of the unit itself in some cases.
The computer readable storage medium provided by the application stores the computer readable program instructions for executing the network slice building method, and solves the technical problem of low suitability of user equipment and network slices. Compared with the prior art, the beneficial effects of the computer readable storage medium provided by the embodiment of the application are the same as those of the network slice building method provided by the embodiment, and are not described in detail herein.
Example six
The application also provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of a network slice building method as described above.
The computer program product provided by the application solves the technical problem of low suitability of user equipment and network slices. Compared with the prior art, the beneficial effects of the computer program product provided by the embodiment of the application are the same as those of the network slice building method provided by the embodiment, and are not described in detail herein.
The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the application, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein, or any application, directly or indirectly, within the scope of the application.
Claims (10)
1. The network slice building method is characterized by comprising the following steps of:
determining a required slice type of target user equipment in a current application scene;
constructing a basic network slice for the target user equipment according to the type of the required slice, wherein the basic network slice comprises a basic resource node set;
screening the basic resource node set to obtain a resource providing node set matched with the building requirement of the target user equipment;
and constructing a target network slice by mapping the target user equipment and the resource providing node set.
2. The network slice building method of claim 1, wherein the required slice types include a first required slice type,
the step of constructing a basic network slice for the target user equipment according to the type of the required slice comprises the following steps:
determining total occupied resources of a first physical node set corresponding to the first required slice type, wherein the first physical node set comprises at least one first physical node;
determining total scheduling resources of the first physical node set according to the total quantity of direct link of each first physical node, node capacity and corresponding link residual bandwidth;
And building the basic network slice for the target user equipment according to the total scheduling resources and the total occupied resources.
3. The network slice building method according to claim 2, wherein the step of determining the total occupied resources of the first set of physical nodes corresponding to the first required slice type includes:
for any first physical node, acquiring a first physical link between the first physical node and the target user equipment;
calculating the occupation amount of the virtual resources of the first physical node according to the virtual resource parameters of the first physical link, and determining the multi-hop resource consumption amount of the first physical node under the first physical link;
taking the sum of the actual occupied resources of the first physical node, the multi-hop resource consumption and the virtual resource occupation as the occupied resources of the first physical node;
and taking the sum value of the occupied resources of the first physical nodes as the total occupied resources of the first physical node set.
4. The network slice building method of claim 1, wherein the required slice types include a second required slice type,
The step of constructing a basic network slice for the target user equipment according to the type of the required slice comprises the following steps:
acquiring the total amount of scheduling resources of a second physical node set corresponding to the second demand slice type, wherein the second physical node set comprises at least one second physical node;
and constructing a basic network slice for the target user equipment according to the total scheduling resources and the total scheduling resources of the second node set.
5. The network slice building method according to claim 4, wherein the step of obtaining the total amount of scheduling resources of the second set of nodes corresponding to the second required slice type includes:
for any second physical node, acquiring the processing time of the second physical node for processing preset data;
according to the data size of the preset data and the processing time, calculating to obtain the network bandwidth of the second physical node;
and calculating the total amount of the scheduling resources according to the transmission delay of the preset data under the network bandwidth and the network bandwidth.
6. The network slice building method of claim 1, wherein the required slice types include a third required slice type,
The step of constructing a basic network slice for the target user equipment according to the type of the required slice comprises the following steps:
determining virtual links and physical links of a third physical node set corresponding to the third required slice type;
and building a basic network slice for the target user equipment according to the mapping relation between the virtual link and the physical link.
7. The network slice building method according to claim 1, wherein the step of screening the base resource node set to obtain a resource providing node set matching the building requirement of the target user equipment comprises:
selecting at least one basic resource node from the basic resource node set;
acquiring node operation parameters and link unit bandwidths of the basic resource nodes;
according to the node operation parameters and the link unit bandwidth, calculating to obtain the network slice construction cost of the target user equipment;
and if the network slice building cost is detected to be a preset building cost threshold, taking all the basic resource nodes together as a resource providing node set matched with the building requirement of the target user equipment.
8. The utility model provides a device is built to network section, its characterized in that, device is built to network section includes:
The determining module is used for determining the type of the required slice of the target user equipment in the current application scene;
the first building module is used for building a basic network slice for the target user equipment according to the type of the required slice;
the screening module is used for screening the basic resource node set to obtain a resource providing node set matched with the building requirement of the target user equipment;
and the second building module is used for building a target network slice by mapping the target user equipment and the resource providing node set.
9. An electronic device, the electronic device comprising:
at least one processor;
a memory communicatively coupled to the at least one processor;
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the steps of the network slice construction method of any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a program for realizing the network slice construction method, the program for realizing the network slice construction method being executed by a processor to realize the steps of the network slice construction method according to any one of claims 1 to 7.
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