CN106131891A - A kind of resource mapping apparatus based on SDWN and method - Google Patents

Abstract

The present invention relates to a kind of resource mapping apparatus based on SDWN and method, belong to mobile communication technology field.The resource mapping apparatus that the present invention provides includes: information search module, collects to user's request information, positional information and channel information and to network radio resources information and calculating resource information；Resource virtualizing module: network entity resource is virtualized；Resource management module: Internet resources are effectively mapped distribution and release；Section network management module: section network is set up, runs and safeguarded；SDN control module: module mentioned above is managed collectively and coordinated scheduling, it is achieved signaling controls to forward with data to separate.The invention also discloses a kind of method for mapping resource based on SDWN.Technical scheme achieves the basic function that resource based on SDWN maps, it is achieved that to Radio Resource and the efficient distribution of calculating resource, have the highest using value in a wireless communication system.

Description

A kind of resource mapping apparatus based on SDWN and method

Technical field

The invention belongs to mobile communication technology field, relate to a kind of resource mapping apparatus based on SDWN and method.

Background technology

In recent years, the key technology of SDN (Software Defined Network) is opened by researchers with application scenarios Open up research, it is proposed that for SDN system architecture and the solution of the most different demands.

Ericsson 5G expert points out, the network architecture of legacy cellular net, has special support and IT system, measurable stream Amount and flow increase, and are especially suitable for single service type user network；But, using this vertical configuration, operator is difficult to extend Communication network, it is also difficult to be adjusted and meet the demand of novel use-case according to the user's request being continually changing.Therefore, in future 5G system in, network will be cut into slices for network by the most abstract, this Connection Service by many customization software realize Function definition.

Karlstad university of Sweden etc. proposes cloud WLAN CloudMAC based on SDN and OpenFlow, passes through Allow WAP (AP) only have mac frame forwarding capability, and certification, process mac frame etc. are functionally moved on to SDN centralized Control Device, can conveniently realize seamless switching between AP, cross-layer ground dexterity is hidden signal disturbing between AP, do not changed AP hardware only by software Upgrading just can dispose the application such as new networking function.

Since 2012, there is scholar the concept of SDN to be incorporated in wireless network and proposed to be applicable to the SDN of wireless network Structure SDWM (Software Defined Wireless Network).On the other hand, China Mobile proposes new nothing Line access structure C RAN, focus on the baseband processing unit of base station in cloud computing pond, it is achieved thereby that green can evolution Target.Meanwhile, network virtualization technology is utilized to carry multiple separate void on same bottom physical network Intend network and become effective thinking of design future network architecture, obtain the attention of numerous scholar.

Efficiently utilizing of resource is played vital effect in following wireless network environment.How to distribute money Source so that it is producing maximum value, after being, Radio Resource maps the key of research.

Summary of the invention

In view of this, it is an object of the invention to provide a kind of resource mapping apparatus based on SDWN and method, this device It is capable of the basic function that resource based on SDWN maps, it is achieved Radio Resource and the efficient of calculating resource are divided with method Join.

For reaching above-mentioned purpose, the present invention provides following technical scheme:

A kind of resource mapping apparatus based on SDWN, this device includes information search module, resource virtualizing module, resource Management module, section network management module, SDN control module；

Described information search module is used for adding up number of users, positional information and business demand, and to resource The information such as service condition, network load information, channel and network topology structure are collected, and these information are the tune of Internet resources Degree distribution and network virtualization provide foundation；

Described resource virtualizing module is for selecting different virtualization policy pair according to the network collected with user profile Physical entity node resource, frequency resource and calculating resource carry out splitting, recombinating so that it is become in logic there is different qualities Virtual resource；

Described resource management module, for by user's request and the network information, selects corresponding resource mapping policy, right Virtual resources carries out integrating dispatching distribution, and resource carries out release recovery, it is achieved the efficient utilization of resource；

Described section network management module is for being responsible for generating section network, and section network is safeguarded and torn open Remove；

Described SDN control module is for being responsible for information search module, resource virtualizing module, resource management module and cutting Sheet network management module carries out being managed collectively and coordinated scheduling, it is achieved signaling controls to forward with data to separate；By SDN control Other modules of module centralized Control, it is achieved user, the network information are collected, and carry out Internet resources virtualization, eventually form the most of the same trade or business The section networking of service type, and realize the effective mapping to Internet resources.

Further, when Radio Resource is mapped by described resource management module, combine simultaneously and consider calculating resource pair Radio Resource mapping distribution impact, described calculating resource include internal memory, CUP, I O Interface.

Further, when described resource management module carries out mapping distribution to Radio Resource with calculating resource simultaneously, use Bigization the effective equation is as object function:

$\underset{x,y,\mathrm{\μ}}{MAX}\mathrm{\ω}\underset{I,K,J}{\Σ}{x}_{k_{i}j}{u}_1\left(y_{k_{i}j}{a}_{k_{i}j}\right)-(1-\mathrm{\ω})\underset{I,K,J}{\Σ}{x}_{k_{i}j}{u}_2\left({\mathrm{\μ}}_{k_{i}j}{c}_{k_{i}j}\right)$

Wherein, u₁For Radio Resource utility function, u₂For calculating resource utility function；ω is Radio Resource and calculating resource Weight factor；For the connection identifier of user Yu base station,Respectively represent user distribute gained Radio Resource and Calculate resource.

Further, consider Radio Resource during described resource management module Resources allocation and calculate the total amount constraint of resource, examining Consider the requirement of user's minimum speed limit, simultaneously, it is also contemplated that different section networks are to Radio Resource and the different demands that calculate resource.

Present invention also offers a kind of resource mapping apparatus based on SDWN, in the method: simultaneously to Radio Resource with When calculating resource carries out mapping distribution, use maximum utility equation as object function:

$\begin{array}{c}\underset{x,y,\mathrm{\μ}}{MAX}\mathrm{\ω}\underset{I,K,J}{\Σ}{x}_{k_{i}j}{u}_1\left(y_{k_{i}j}{a}_{k_{i}j}\right)-(1-\mathrm{\ω})\underset{I,K,J}{\Σ}{x}_{k_{i}j}{u}_2\left({\mathrm{\μ}}_{k_{i}j}{c}_{k_{i}j}\right)\\ \begin{array}{cccc}s.t.& C1:& \underset{J}{\Σ}{x}_{k_{i}j}=1,& \∀i,k\\ & C2:& \underset{I,K}{\Σ}{x}_{k_{i}j}{y}_{k_{i}j}\≤1,& \∀j\\ & C3:& \underset{I,K}{\Σ}{x}_{k_{i}j}{y}_{k_{i}j}{R}_{k_{i}j}\≤W_j,& \∀j\\ & C4:& \underset{J}{\Σ}{x}_{k_{i}j}{y}_{k_{i}j}{R}_{k_{i}j}\≥r_{\min ,k_i},& \∀i,k\\ & C5:& \underset{I,K}{\Σ}{x}_{k_{i}j}{\mathrm{\μ}}_{k_{i}j}\≤1,& \∀j\\ & C6:& \underset{J,K}{\Σ}{x}_{k_{i}j}{y}_{k_{i}j}{B}_j\≥M_i,& \∀i\\ & C7:& \underset{J,K}{\Σ}{x}_{k_{i}j}{\mathrm{\μ}}_{k_{i}j}{C}_j\≥N_i,& \∀i\end{array}\end{array}$

Wherein, u₁For Radio Resource utility function, u₂For calculating resource utility function；ω is Radio Resource and calculating resource Weight factor；For the connection identifier of user Yu base station,Respectively represent user distribute gained Radio Resource and Calculate resource.

Further, various restrictive condition is considered with calculating resource when Radio Resource is mapped: restrictive condition C1 table Show that each user can only be connected with a base station；Restrictive condition C2 with C3 represents that the institute being connected with any one base station is useful respectively The Radio Resource that family is distributed not can exceed that total Radio Resource and the return bandwidth of this base station；Restrictive condition C4 represent distribute to appoint The resource of a user of anticipating must assure that the minimum speed limit requirement of this user, and otherwise this user will be unable to carry out data transmission；Base station Calculating resource limit can be expressed as restrictive condition C5；In order to meet the network of the heterogeneous networks section that different business is formed Performance, the Internet resources (Radio Resource and calculating resource) that each section network is distributed must are fulfilled for a minimum threshold to be needed Asking, restrictive condition C6 represents that the lowest-bandwidth of section network limits, and C7 represents the calculating resource limit of section network.

The beneficial effects of the present invention is: the apparatus and method that the present invention provides achieve what resource based on SDWN mapped Basic function, it is achieved that to Radio Resource and the efficient distribution of calculating resource, have the highest application valency in a wireless communication system Value.

Accompanying drawing explanation

In order to make the purpose of the present invention, technical scheme and beneficial effect clearer, the present invention provides drawings described below to carry out Illustrate:

Fig. 1 is present invention network based on SDWN section mapping graph；

Fig. 2 is present invention resource mapping apparatus based on SDWN schematic diagram；

Fig. 3 is present invention method for mapping resource based on SDWN flow chart；

Fig. 4 is present invention resource based on SDWN mapping management flow chart.

Detailed description of the invention

Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.

Embodiment 1:

Fig. 1 is present invention network based on SDWN section mapping graph, and Fig. 2 is present invention resource mapping apparatus based on SDWN Schematic diagram, as it can be seen, present embodiments provide a kind of resource mapping apparatus based on SDWN, for realizing in SDWN nothing Line resource and effective distribution of calculating resource, at least include information search module, resource virtualizing module, section network management mould Block and SDN control module.

Information search module, for adding up number of users, positional information and business demand, and uses resource The information such as situation, network load information, channel and network topology structure are collected, and these information are that the scheduling of Internet resources divides Join and provide foundation with network virtualization；

Resource virtualizing module, by select different virtualization policy to physical entity node resource, frequency resource and Calculate resource to carry out splitting, recombinating so that it is become the virtual resource with different qualities in logic；

Resource management module, carries out integrating dispatching distribution and entering resource to virtual resources by resource mapping policy Row release is reclaimed, it is achieved the efficient utilization of resource；

Section network management module, is responsible for generating section network, and section network is safeguarded and removed；

SDN control module, is responsible for information search module, resource virtualizing module, resource management module and section network Management module carries out being managed collectively and coordinated scheduling, it is achieved control to separate with forwarding；

When Radio Resource is allocated by above-mentioned resource management module, consider the distribution impact calculating resource simultaneously.? When Radio Resource is allocated with calculating resource, have employed maximum utility equation as object function:

$\underset{x,y,\mathrm{\μ}}{MAX}\mathrm{\ω}\underset{I,K,J}{\Σ}{x}_{k_{i}j}{u}_1\left(y_{k_{i}j}{a}_{k_{i}j}\right)-(1-\mathrm{\ω})\underset{I,K,J}{\Σ}{x}_{k_{i}j}{u}_2\left({\mathrm{\μ}}_{k_{i}j}{c}_{k_{i}j}\right)$

Wherein, u₁For Radio Resource utility function, u₂For calculating resource utility function.ω is Radio Resource and calculating resource Weight factor.For the connection identifier of user Yu base station,Respectively represent user distribute gained Radio Resource and Calculate resource.

Alternatively, in above-mentioned resource mapping apparatus, consider Radio Resource when Resources allocation and calculate the total amount of resource Constraint, it is contemplated that the requirement of user's minimum speed limit, simultaneously, it is also contemplated that different section networks are to Radio Resource and calculate resource Different demands.

Alternatively, in above-mentioned resource mapping apparatus, it is characterised in that concentrate control to call other by SDN control module Module, it is achieved the effective distribution to Internet resources.

Embodiment 2:

Fig. 3 is present invention method for mapping resource based on SDWN flow chart, present embodiments provides a kind of based on SDWN Method for mapping resource, including operating as follows:

User's request information and network resource information are added up by information search module.Wherein user profile includes, uses The positional information at family, channel status and type of service, Internet resources include, network radio resources and network computing resources.

Further according to collecting the information of module, set up problem model:

$\underset{x,y,\mathrm{\μ}}{MAX}\mathrm{\ω}\underset{I,K,J}{\Σ}{x}_{k_{i}j}{u}_1\left(y_{k_{i}j}{a}_{k_{i}j}\right)-(1-\mathrm{\ω})\underset{I,K,J}{\Σ}{x}_{k_{i}j}{u}_2\left({\mathrm{\μ}}_{k_{i}j}{c}_{k_{i}j}\right)$

Wherein, u₁For Radio Resource utility function, u₂For calculating resource utility function.ω is Radio Resource and calculating resource Weight factor.For the connection identifier of user Yu base station,Respectively represent user distribute gained Radio Resource and Calculate resource.

After setting up Optimized model, Optimized model is analyzed and solves.It should be noted that this Optimized model is permissible Solved by Lagrange duality method.

The mapping to resource is realized further according to the optimization method of completing the square tried to achieve.

Finally according to concrete network mapping, form different section networks.

Embodiment 3:

Fig. 4 is present invention resource based on SDWN mapping management flow chart, effectively manages Internet resources, makes network It is an important design goal of resource mapping apparatus based on SDWN that resource obtains maximally utilizing, and is also radio network technique The target that development is pursued always.The effectively distribution of Radio Resource directly influences the service quality of network and the experience matter of user Amount, so vital effect is played in the management to resource in the entire network.In virtualization software definition wireless network To the management process of resource as shown in Figure 3.

First user can propose to build the request of virtual network according to business demand, then by mapping algorithm by number of resources Carrying out mapping and dispatching according to the resource in storehouse, resource and network topology then according to distribution form concrete virtualization network, That is to say section network, end user is linked into the transmission carrying out data in section network.When after the business end of transmission, Yong Huhui Virtual network is removed in application, and the Internet resources simultaneously used will be released, and the resource of release can be transferred in network resources system Reuse, it is achieved that the repetition of resource efficiently utilizes for other business.

Finally illustrate, preferred embodiment above only in order to technical scheme to be described and unrestricted, although logical Cross above preferred embodiment the present invention to be described in detail, it is to be understood by those skilled in the art that can be In form and it is made various change, without departing from claims of the present invention limited range in details.

Claims (6)

1. a resource mapping apparatus based on SDWN, it is characterised in that: this device includes information search module, resource virtualizing Module, resource management module, section network management module, SDN control module；

Described information search module is for adding up number of users, positional information and business demand, and uses resource The information such as situation, network load information, channel and network topology structure are collected, and these information are that the scheduling of Internet resources divides Join and provide foundation with network virtualization；

Described resource virtualizing module is for selecting different virtualization policy to physics according to the network collected with user profile Entity node resource, frequency resource and calculating resource carry out splitting, recombinating so that it is become the void with different qualities in logic Intend resource；

Described resource management module is for by user's request and the network information, selecting corresponding resource mapping policy, to virtual Change resource and carry out integrating dispatching distribution, and resource is carried out release recovery, it is achieved the efficient utilization of resource；

Described section network management module is for being responsible for generating section network, and section network is safeguarded and removed；

Described SDN control module is for being responsible for information search module, resource virtualizing module, resource management module and section net Network management module carries out being managed collectively and coordinated scheduling, it is achieved signaling controls to forward with data to separate；By SDN control module Other modules of centralized Control, it is achieved user, the network information are collected, and carry out Internet resources virtualization, eventually form different business class The section networking of type, and realize the effective mapping to Internet resources.

A kind of resource mapping apparatus based on SDWN the most according to claim 1, it is characterised in that: described resource management's mould When Radio Resource is mapped by block, combine simultaneously and consider the mapping distribution impact calculating resource to Radio Resource, described meter Calculate resource include internal memory, CUP, I O Interface.

A kind of resource mapping apparatus based on SDWN the most according to claim 2, it is characterised in that: described resource management's mould When block carries out mapping distribution to Radio Resource with calculating resource simultaneously, use maximum utility equation as object function:

$MAX\mathrm{\ω}\underset{I,K,J}{\mathrm{\Σ}}{x}_{k_{i}j}{u}_1\left(y_{k_{i}j}{a}_{k_{i}j}\right)-(1-\mathrm{\ω})\underset{I,K,J}{\mathrm{\Σ}}{x}_{k_{i}j}{u}_2\left(y_{k_{i}j}{c}_{k_{i}j}\right)$

Wherein, I, K, J represent that service provider aggregates, the collection of base stations in user's set and infrastructure provider are respectively u₁For Radio Resource utility function, u₂For calculating resource utility function, ω is the weight factor of Radio Resource and calculating resource, For the connection identifier of user Yu base station,Represent that user distributes the Radio Resource of gained and calculates resource respectively,Table Being shown as virtual operator utilizes Radio Resource to produce produced income each user,Represent and calculate resource in each use The expense produced in family.

A kind of resource mapping apparatus based on SDWN the most according to claim 3, it is characterised in that: described resource management's mould Consider Radio Resource during block Resources allocation and calculate the total amount constraint of resource, it is considered to the requirement of user's minimum speed limit, also examining meanwhile Consider different section network to Radio Resource and the different demands of calculating resource.

5. using the method that the resource mapping apparatus as according to any one of Claims 1-4 carries out resource mapping, its feature exists In: in the method: when carrying out mapping distribution to Radio Resource with calculating resource, use maximum utility equation as mesh simultaneously Scalar functions:

$\begin{array}{c}\underset{x,y,\mathrm{\μ}}{MAX}\mathrm{\ω}\underset{I,K,J}{\mathrm{\Σ}}{x}_{k_{i}j}{u}_1\left(y_{k_{i}j}{a}_{k_{i}j}\right)-(1-\mathrm{\ω})\underset{I,K,J}{\mathrm{\Σ}}{x}_{k_{i}j}{u}_2\left(y_{k_{i}j}{c}_{k_{i}j}\right)\\ \begin{array}{cccc}s.t.& C1:& \underset{J}{\mathrm{\Σ}}{x}_{k_{i}j}=1,& \∀i,k\\ & C2:& \underset{I,K}{\mathrm{\Σ}}{x}_{k_{i}j}{y}_{k_{i}j}\≤1,& \∀j\\ & C3:& \underset{I,K}{\mathrm{\Σ}}{x}_{k_{i}j}{y}_{k_{i}j}{R}_{k_{i}j}\≤W_j,& \∀j\\ & C4:& \underset{J}{\mathrm{\Σ}}{x}_{k_{i}j}{y}_{k_{i}j}{R}_{k_{i}j}\≥r_{\min ,k_i},& \∀i,k\\ & C5:& \underset{I,K}{\mathrm{\Σ}}{x}_{k_{i}j}{\mathrm{\μ}}_{k_{i}j}\≤1,& \∀j\\ & C6:& \underset{J,K}{\mathrm{\Σ}}{x}_{k_{i}j}{y}_{k_{i}j}{B}_j\≥M_i,& \∀i\\ & C7:& \underset{J,K}{\mathrm{\Σ}}{x}_{k_{i}j}{\mathrm{\μ}}_{k_{i}j}{C}_j\≥N_i,& \∀i\end{array}\end{array}$

Wherein, u₁For Radio Resource utility function, u₂For calculating resource utility function, ω is Radio Resource and the power calculating resource Repeated factor,For the connection identifier of user Yu base station,Represent that user distributes Radio Resource and the calculating of gained respectively Resource,Represent the back haul link that user is shared in a base station, W_jFor the backhaul link capacity of base station,For user Little service speed, B_jFor bandwidth of base station, M_iFor the lowest-bandwidth requirement of network of cutting into slices, C_j, N_iResource and section is calculated for base station The minimum calculating resource requirement of network.

The method carrying out resource mapping the most according to claim 5, it is characterised in that: to Radio Resource and calculating resource Various restrictive condition is considered: restrictive condition C1 represents that each user can only be connected with a base station when mapping；Restrictive condition C2 with C3 represents that the Radio Resource that all users being connected with any one base station are distributed not can exceed that the total of this base station respectively Radio Resource and return bandwidth；Restrictive condition C4 represents that distributing to the resource of any one user must assure that the lowest speed of this user Rate requirement, otherwise this user will be unable to carry out data transmission；The calculating resource limit of base station can be expressed as restrictive condition C5；For Meeting the network performance of the heterogeneous networks section that different business is formed, the Internet resources that each section network is distributed are necessary Meeting a minimum threshold demand, restrictive condition C6 represents that the lowest-bandwidth of section network limits, and C7 represents the meter of section network Calculate resource limit.