CN106131891B - A device and method for resource mapping based on SDWN - Google Patents
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Abstract
本发明涉及一种基于SDWN的资源映射装置和方法，属于移动通信技术领域。本发明提供的资源映射装置包括：信息搜集模块，对用户需求信息、位置信息和信道信息以及对网络无线资源信息和计算资源信息进行搜集；资源虚拟化模块：对网络实体资源进行虚拟化；资源管理模块：对网络资源进行有效的映射分配和释放；切片网络管理模块：对切片网络进行建立、运行和维护；SDN控制模块：对上述提到的模块进行统一管理和协调调度，实现信令控制与数据转发的分离。本发明还公开了一种基于SDWN的资源映射方法。本发明的技术方案实现了基于SDWN的资源映射的基本功能，实现了对无线资源和计算资源的高效分配，在无线通信系统中有很高的应用价值。
The invention relates to an SDWN-based resource mapping device and method, belonging to the technical field of mobile communication. The resource mapping device provided by the present invention includes: an information collection module, which collects user demand information, location information and channel information, as well as network wireless resource information and computing resource information; a resource virtualization module: virtualizes network entity resources; Management module: effectively map, allocate and release network resources; slice network management module: establish, operate and maintain slice networks; SDN control module: carry out unified management and coordinated scheduling of the above-mentioned modules to realize signaling control Separation from data forwarding. The invention also discloses a resource mapping method based on SDWN. The technical scheme of the present invention realizes the basic function of resource mapping based on SDWN, realizes efficient allocation of wireless resources and computing resources, and has high application value in wireless communication systems.
Description
Technical field
The invention belongs to mobile communication technology fields, are related to a kind of resource mapping apparatus and method based on SDWN.
Background technique
In recent years, researchers open the key technology of SDN (Software Defined Network) with application scenarios
Research has been opened up, SDN system architecture and solution for respectively different demands are proposed.
Ericsson 5G expert points out that the network architecture of legacy cellular net has dedicated support and IT system, and stream can be predicted
Amount and flow increase, and are very suitable to single service type user network；However, operator is difficult to extend using this vertical configuration
Telecommunication network, it is also difficult to be adjusted according to continually changing user demand and meet the needs of novel use-case.Therefore, in future
5G system in, network will be further abstracted as network slice, this connection service is by many customization software realizations
What function defined.
Karlstad university, Sweden etc. is based on SDN and OpenFlow and proposes cloud WLAN CloudMAC, passes through
It allows wireless access point (AP) that only there is mac frame forwarding capability, and certification, processing mac frame etc. is functionally moved on into SDN centralized control
Device, realize seamless switching between AP, cross-layer with can be convenient dexterity hides signal interference between AP, does not change AP hardware and only lean on software
Upgrading can dispose the application such as new networking function.
Since 2012, there is scholar that the concept of SDN is introduced into wireless network and proposed the SDN for being suitable for wireless network
Structure --- SDWM (Software Defined Wireless Network).On the other hand, China Mobile proposes new nothing
Line access structure C RAN, the baseband processing unit of base station is focused in cloud computing pond, so that realizing green can evolution
Target.At the same time, multiple mutually independent void are carried on the same bottom physical network using network virtualization technology
Quasi- network has become effective thinking of design future network architecture, obtains the attention of numerous scholars.
The efficient of resource is played a crucial role using in following wireless network environment.How money is distributed
Source makes it generate maximum utility value, is the key that later radio resource mapping research.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of resource mapping apparatus and method based on SDWN, the device
It can be realized the basic function of the resource impact based on SDWN with method, realize efficient point to radio resource and computing resource
Match.
In order to achieve the above objectives, the invention provides the following technical scheme:
A kind of resource mapping apparatus based on SDWN, the device include information search module, resource virtualizing module, resource
Management module, slice network management module, SDN control module；
The information search module is used to count number of users, location information and business demand, and to resource
The information such as service condition, network load information, channel and network topology structure are collected, these information are the tune of Internet resources
Degree distribution and network virtualization provide foundation；
The resource virtualizing module is used to select different virtualization policies pair according to the network and user information of collection
Physical entity node resource, frequency resource and computing resource are split, recombinate, become in logic have different characteristics
Virtual resource；
The resource management module is used to select corresponding resource impact strategy by user demand and the network information, right
Virtualization resource carries out integration dispatching distribution, and carries out release recycling to resource, realizes the efficient utilization of resource；
The slice network management module is sliced network for being responsible for generating, and slice network is safeguarded and torn open
It removes；
The SDN control module is for being responsible for information search module, resource virtualizing module, resource management module and cutting
Piece network management module carries out unified management and coordinated scheduling, realizes the separation of signaling control and data forwarding；It is controlled by SDN
Other modules of module centralized control realize that user, the network information collect, carry out Internet resources virtualization, eventually form not of the same trade or business
The slice network of service type, and realize effective mapping to Internet resources.
Further, when the resource management module maps radio resource, while combining and considering computing resource pair
The mapping of radio resource, which distributes, to be influenced, the computing resource include memory, CUP, I O Interface.
Further, when the resource management module carries out mapping distribution to radio resource and computing resource simultaneously, using most
Bigization the effective equation is as objective function:
Wherein, u1For radio resource utility function, u2For computing resource utility function；ω is radio resource and computing resource
Weight factor；For the connection identifier of user and base station,It respectively indicates user and distributes resulting radio resource
And computing resource,It is expressed as virtual operator and generates generated income in each user using radio resource,It indicates
The expense that computing resource generates in each user.
Further, the total amount constraint that radio resource and computing resource are considered when the resource management module distribution resource, is examined
Consider the requirement of user's minimum speed limit, simultaneously, it is also contemplated that different demands of the different slice networks to radio resource and computing resource.
The present invention also provides a kind of resource mapping apparatus based on SDWN, in the method: at the same to radio resource with
When computing resource carries out mapping distribution, using maximum utility equation as objective function:
Wherein, u1For radio resource utility function, u2For computing resource utility function；ω is radio resource and computing resource
Weight factor；For the connection identifier of user and base station,It respectively indicates user and distributes resulting radio resource
And computing resource,Indicate user's occupied backhaul link in a base station, WjFor the backhaul link capacity of base station,For
The minimum service rate of user, BjFor bandwidth of base station, MiFor the lowest-bandwidth requirement for being sliced network, Cj, NiFor base station computing resource
And the minimum computing resource requirement of slice network.
Further, various restrictive conditions: restrictive condition C1 table are considered when mapping radio resource and computing resource
Show that each user can only be connected with a base station；It is useful that restrictive condition C2 and C3 respectively indicate the institute being connected with any one base station
Total radio resource and return bandwidth of the radio resource that family is distributed no more than the base station；Restrictive condition C4 expression, which is distributed to, appoints
The resource of a user of anticipating must assure that the minimum speed limit requirement of the user, and otherwise the user will be unable to carry out data transmission；Base station
Computing resource limitation can be expressed as restrictive condition C5；In order to meet the network that different business is formed by heterogeneous networks slice
Performance, the Internet resources (radio resource and computing resource) that each slice network is distributed, which must satisfy a minimum threshold, to be needed
It asks, restrictive condition C6 indicates the lowest-bandwidth limitation of slice network, and C7 indicates the computing resource limitation of slice network.
The beneficial effects of the present invention are: device and method provided by the invention realize the resource impact based on SDWN
Basic function realizes the efficient distribution to radio resource and computing resource, has in a wireless communication system very high using valence
Value.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides following attached drawing and carries out
Illustrate:
Fig. 1 is that the present invention is based on the networks of SDWN to be sliced mapping graph；
Fig. 2 is that the present invention is based on the resource mapping apparatus schematic diagrames of SDWN；
Fig. 3 is that the present invention is based on the method for mapping resource flow charts of SDWN；
Fig. 4 is that the present invention is based on the resource impact management flow charts of SDWN.
Specific embodiment
Below in conjunction with attached drawing, a preferred embodiment of the present invention will be described in detail.
Embodiment 1:
Fig. 1 is that mapping graph is sliced the present invention is based on the network of SDWN, and Fig. 2 is that the present invention is based on the resource mapping apparatus of SDWN
Schematic diagram, as shown, present embodiments provide a kind of resource mapping apparatus based on SDWN, for realizing in SDWN to nothing
Effective distribution of line resource and computing resource includes at least information search module, resource virtualizing module, slice network management mould
Block and SDN control module.
Information search module is used for counting to number of users, location information and business demand, and to resource
The information such as situation, network load information, channel and network topology structure are collected, these information are the scheduling point of Internet resources
With with network virtualization provide foundation；
Resource virtualizing module, by select different virtualization policy to physical entity node resource, frequency resource and
Computing resource is split, recombinates, and becomes the virtual resource with different characteristics in logic；
Resource management module, by resource impact strategy to virtualization resource integrate dispatching distribution and to resource into
Row release recycling, realizes the efficient utilization of resource；
It is sliced network management module, is responsible for generating slice network, and slice network is safeguarded and removed；
SDN control module is responsible for information search module, resource virtualizing module, resource management module and slice network
Management module carries out unified management and coordinated scheduling, realizes the separation of control with forwarding；
When above-mentioned resource management module is allocated radio resource, while the distribution for considering computing resource influences.?
When being allocated to radio resource and computing resource, maximum utility equation is used as objective function:
Wherein, u1For radio resource utility function, u2For computing resource utility function.ω is radio resource and computing resource
Weight factor.For the connection identifier of user and base station,It respectively indicates user and distributes resulting wireless money
Source and computing resource.
Optionally, in above-mentioned resource mapping apparatus, the total amount of radio resource and computing resource is considered when distributing resource
Constraint, it is contemplated that the requirement of user's minimum speed limit, simultaneously, it is also contemplated that different slice networks are to radio resource and computing resource
Different demands.
Optionally, in above-mentioned resource mapping apparatus, which is characterized in that concentrate control to call other by SDN control module
Module realizes effective distribution to Internet resources.
Embodiment 2:
Fig. 3 is that the present invention is based on the method for mapping resource flow charts of SDWN, is present embodiments provided a kind of based on SDWN's
Method for mapping resource, including operate as follows:
Information search module counts user demand information and network resource information.Wherein user information includes using
Location information, channel status and the type of service at family, Internet resources include network radio resources and network computing resources.
Further according to the information for collecting module, problem model is established:
Wherein, u1For radio resource utility function, u2For computing resource utility function.ω is radio resource and computing resource
Weight factor.For the connection identifier of user and base station,It respectively indicates user and distributes resulting radio resource
And computing resource.
After establishing Optimized model, Optimized model is analyzed and is solved.It should be noted that this Optimized model can be with
It is solved by Lagrange duality method.
The mapping to resource is realized further according to the optimization method of completing the square acquired.
Finally according to specific network mapping, different slice networks is formed.
Embodiment 3:
Fig. 4 is that the present invention is based on the resource impact management flow charts of SDWN, is effectively managed Internet resources, makes network
Resource obtain maximally utilizing be the resource mapping apparatus based on SDWN an important design goal and radio network technique
Develop the target pursued always.Effective distribution of radio resource directly influences the service quality of network and the experience matter of user
Amount, so playing the role of in the entire network to the management of resource vital.It is defined in wireless network in virtualization software
It is as shown in Figure 3 to the management process of resource.
User can propose the request of building virtual network according to business demand first, then pass through mapping algorithm for number of resources
It being mapped and is dispatched according to the resource in library, the resource and network topology then according to distribution form specific virtualization network,
It that is to say slice network, end user is linked into the transmission that data are carried out in slice network.After the business end of transmission, Yong Huhui
Virtual network is removed in application, while the Internet resources used will be released, and the resource of release can be transferred in network resources system
It is reused for other business, it is achieved that the repetition of resource efficiently utilizes.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (5)
1. a kind of resource mapping apparatus based on SDWN, it is characterised in that: the device includes information search module, resource virtualizing
Module, resource management module, slice network management module, SDN control module；
The information search module is used for counting to number of users, location information and business demand, and to resource
Situation, network load information, channel and network topology information are collected, these information are the dispatching distribution of Internet resources
Foundation is provided with network virtualization；
The resource virtualizing module is used to select different virtualization policies to physics according to the network and user information of collection
Entity node resource, frequency resource and computing resource are split, recombinate, and become the void with different characteristics in logic
Quasi- resource；
The resource management module is used to corresponding resource impact strategy is selected, to virtual by user demand and the network information
Change resource and carry out integration dispatching distribution, and release recycling is carried out to resource, realizes the efficient utilization of resource；
The slice network management module is sliced network for being responsible for generating, and slice network is safeguarded and removed；
The SDN control module is for being responsible for information search module, resource virtualizing module, resource management module and slice net
Network management module carries out unified management and coordinated scheduling, realizes the separation of signaling control and data forwarding；Pass through SDN control module
Other modules of centralized control realize that user, the network information collect, carry out Internet resources virtualization, eventually form different business class
The slice network of type, and realize effective mapping to Internet resources；
When the resource management module carries out mapping distribution to radio resource and computing resource simultaneously, using maximum utility equation
As objective function:
Wherein, I, K, J respectively indicate service provider aggregates, and the collection of base stations in user's set and infrastructure provider is
u1For radio resource utility function, u2For computing resource utility function, ω is the weight factor of radio resource and computing resource,For the connection identifier of user and base station,It respectively indicates user and distributes resulting radio resource and computing resource,It is expressed as virtual operator and generates generated income in each user using radio resource,Indicate that computing resource exists
The expense generated in each user；
Various restrictive conditions are considered when mapping radio resource and computing resource, wherein radio resource restrictive condition packet
It includes:
Restrictive condition C1: each user can only be connected with a base station；
Restrictive condition C2: the radio resource that all users being connected with any one base station are distributed is total no more than the base station
Radio resource；
Restrictive condition C3: the radio resource that all users being connected with any one base station are distributed is returned no more than the base station
Journey bandwidth；
Restrictive condition C4: the resource for distributing to any one user must assure that the minimum speed limit requirement of the user, otherwise the user
It will be unable to carry out data transmission；
The computing resource restrictive condition of base station includes:
Restrictive condition C5: in order to meet the network performance that different business is formed by heterogeneous networks slice, each slice network institute
The Internet resources of distribution must satisfy a minimum threshold demand；
Restrictive condition C6: it is sliced the lowest-bandwidth limitation of network；
Restrictive condition C7: it is sliced the computing resource limitation of network.
2. a kind of resource mapping apparatus based on SDWN according to claim 1, it is characterised in that: the resource management mould
When block maps radio resource, while combining and considering computing resource to the mapping of radio resource distribution influence, the meter
Calculate resource include memory, CUP, I O Interface.
3. a kind of resource mapping apparatus based on SDWN according to claim 2, it is characterised in that: the resource management mould
Block considers the total amount constraint of radio resource and computing resource when distributing resource, consider the requirement of user's minimum speed limit, meanwhile, also examine
Different slice networks have been considered to the different demands of radio resource and computing resource.
4. the method for carrying out resource impact using resource mapping apparatus as claimed any one in claims 1 to 3, feature exist
In: in the method: while when carrying out mapping distribution to radio resource and computing resource, using maximum utility equation as mesh
Scalar functions:
s.t.C1:
C2:
C3:
C4:
C5:
C6:
C7:
Wherein, u1For radio resource utility function, u2For computing resource utility function, ω is the power of radio resource and computing resource
Repeated factor,For the connection identifier of user and base station,It respectively indicates user and distributes resulting radio resource and meter
Resource is calculated,Indicate user's occupied backhaul link in a base station, WjFor the backhaul link capacity of base station,For user
Minimum service rate, BjFor bandwidth of base station, MiFor the lowest-bandwidth requirement for being sliced network, Cj, NiFor base station computing resource and
It is sliced the minimum computing resource requirement of network.
5. the method according to claim 4 for carrying out resource impact, it is characterised in that: to radio resource and computing resource
Various restrictive conditions are considered when being mapped: restrictive condition C1 indicates that each user can only be connected with a base station；Restrictive condition
It is total no more than the base station that C2 and C3 respectively indicates the radio resource that all users being connected with any one base station are distributed
Radio resource and return bandwidth；Restrictive condition C4 indicates that the resource for distributing to any one user must assure that the lowest speed of the user
Rate requirement, otherwise the user will be unable to carry out data transmission；The computing resource restricted representation of base station is limitation condition C 5；In order to full
Sufficient different business is formed by the network performance of heterogeneous networks slice, and the Internet resources that each slice network is distributed must satisfy
One minimum threshold demand, restrictive condition C6 indicate the lowest-bandwidth limitation of slice network, and C7 indicates the calculating money of slice network
Source limitation.
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