CN107333268A - A kind of heterogeneous network is directed to the resource regulating method of user access request - Google Patents

A kind of heterogeneous network is directed to the resource regulating method of user access request Download PDF

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CN107333268A
CN107333268A CN201710396856.9A CN201710396856A CN107333268A CN 107333268 A CN107333268 A CN 107333268A CN 201710396856 A CN201710396856 A CN 201710396856A CN 107333268 A CN107333268 A CN 107333268A
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base station
virtual base
user
virtual
resources
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CN107333268B (en
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刘胜美
张瑜
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Nanjing Post and Telecommunication University
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Nanjing Post and Telecommunication University
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10Dynamic resource partitioning
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/52Allocation or scheduling criteria for wireless resources based on load
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/53Allocation or scheduling criteria for wireless resources based on regulatory allocation policies

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention relates to the resource regulating method that a kind of heterogeneous network is directed to user access request, the access request of the user received is sent to network resource manager by base station, and receives the position of the virtual base station for the response access request that the network resource manager is determined according to the access request of user;The virtual base station has independent Virtual Network Controller, judges to whether there is resource in the virtual base station, if there is resource in the virtual base station, the Virtual Network Controller is by the resource allocation in the virtual base station to user;If resource is not present in the virtual base station, resource reallocation is carried out to the virtual base station, network delay is reduced, improves response speed, so as to improve Consumer's Experience.

Description

Resource scheduling method for user access request of heterogeneous network
Technical Field
The invention relates to a resource scheduling method for a user access request of a heterogeneous network, and belongs to the technical field of virtual networks.
Background
With the continuous development of information technology, virtualization technology has become an important method for solving memory problems. Virtualization refers to operation on a virtual basis rather than a real basis, and is a solution for simplifying management and optimizing resources.
At present, a virtualized heterogeneous wireless network architecture is proposed, but an efficient virtual resource allocation method in a heterogeneous wireless network still faces a huge challenge, a method capable of well solving virtual wireless resource allocation still does not exist, and a need for improvement exists. A virtualized wireless network is a process of implementing abstraction, fragmentation, isolation, and sharing of wireless resources. Along with the huge increase of wireless services and flow, the trend of extending virtualization from a wired network to a wireless network is inevitable, and the existing resource allocation method cannot well solve the problem of request delay, easily causes user use jam, and brings poor use experience to users.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a resource scheduling method for a user access request by a heterogeneous network, which can improve the resource allocation speed and reduce the problem of user use delay.
The invention adopts the following technical scheme for solving the technical problems: the invention designs a resource scheduling method of a heterogeneous network aiming at a user access request, the heterogeneous network is composed of at least one physical base station, at least one virtual base station is respectively constructed on each physical base station, and the resource scheduling method is used for aiming at the user access request and executing the following steps:
a1, a user sends a user access request to a target physical base station in a heterogeneous network, the target physical base station confirms a virtual base station responded according to the user access request as a target virtual base station, the user is distributed to the target virtual base station, and then the step A2 is carried out;
step A2, obtaining the existing resources on the target virtual base station and the demand resources of each user distributed on the target virtual base station, and further obtaining the total demand resources of each user distributed on the target virtual base station, thereby judging whether the existing resources on the target virtual base station meet the demand of each user distributed, if yes, directly performing resource distribution on each user distributed by the target virtual base station; otherwise go to step A3;
step A3, aiming at each virtual base station on the target physical base station except the target virtual base station, obtaining the existing resources on the virtual base station and the demand resources of each user distributed on the virtual base station, and further obtaining the total demand resources of each user distributed on the virtual base station, so as to obtain each resource surplus virtual base station on the target physical base station except the target virtual base station, and using the virtual base station as each virtual base station to be processed, and then entering step A4;
and step A4, sequencing all the virtual base stations to be processed according to the sequence of the surplus resources from large to small, and transferring the surplus resources of all the virtual machines to be processed to the target virtual base station in sequence until the existing resources on the target virtual base station meet the requirements of all the distributed users or not.
As a preferred technical scheme of the invention: while the steps a1 to a4 are executed for the user access request, the number α of times that each virtual base station is determined to be excessive in resources and the number β of times that each virtual base station is determined to be insufficient in resources are periodically counted for all virtual base stations in the heterogeneous network, and based on the above-mentioned period counting results for all virtual base stations, the following steps are periodically executed:
step B1, taking each virtual base station corresponding to each alpha larger than a preset surplus time threshold value or each virtual base station corresponding to each beta larger than a preset shortage time threshold value as an unstable virtual base station, and then entering step B2;
step B2, respectively aiming at each unstable virtual base station, obtaining the existing resources on the unstable virtual base station and the total required resources of each user distributed on the unstable virtual base station, thereby respectively judging whether each unstable virtual base station is in excess of resources or insufficient of resources as the current resource state of each unstable virtual base station, and then entering step B3;
and B3, respectively aiming at each unstable virtual base station, according to the current resource state of the unstable virtual base station, adjusting the resources on the unstable virtual base station by the physical base station corresponding to the unstable virtual base station, and further adjusting the resources of all unstable virtual base stations.
As a preferred technical scheme of the invention: in the step a2, the step A3, and the step B2, the determination of the resource condition on the virtual base station is performed according to the following formula:
obtaining the demand resource of each user distributed on each virtual base station in each physical base stationWherein,representing the required resource of the kth user distributed on the nth virtual base station in the jth physical base station; pjIndicating that the position of the user receives the transmitting power of the jth physical base station;representing the channel gain corresponding to the k user distributed on the nth virtual base station in the jth physical base station; σ represents the noise power;the expression represents the channel gain corresponding to the k user allocated to the n virtual base station in the i physical base station.
As a preferred technical scheme of the invention: network resource managers are respectively arranged on each physical base station in the heterogeneous network, and virtual network controllers are respectively arranged on each virtual base station on each physical base station;
the network resource manager on the physical base station is configured to perform, in step a1, an operation of receiving a user access request forwarded by the target physical base station from the user, determining a virtual base station responded according to the user access request, as the target virtual base station, and allocating the user to the target virtual base station; the method is further used for performing the sequencing for each virtual base station to be processed in the step a4, performing scheduling operation for the virtual base stations to be processed in sequence, periodically counting the times alpha that each virtual base station is respectively judged to be excessive in resources and the times beta that each virtual base station is judged to be insufficient in resources, and performing the operations of the steps B1 to B3 based on the periodic counting results for all the virtual base stations;
the virtual network controllers on the virtual base stations are used for executing the operation of step a2, the operation of step A3, and the resource transfer operation between the virtual base stations in step a4, wherein the virtual network controllers on the virtual base stations respectively obtain the resource conditions on the virtual base stations.
As a preferred technical scheme of the invention: each physical base station is respectively provided with a resource block manager and a user information manager; each virtual base station is respectively provided with a resource block, a user information module and a cache region; the resource block manager on the physical base station is used for allocating or adjusting resources on the physical base station to each virtual base station corresponding to the resource block manager; the user information manager on the physical base station is used for storing user information;
in the step a1, a user sends a user access request to a target physical base station in the heterogeneous network, the target physical base station sends the received user access request to a corresponding network resource manager, the network resource manager analyzes the user access request to obtain user information, the network resource manager compares the user information with data in the user information manager, if the comparison is passed, the network resource manager confirms a virtual base station responded by the user access request as a target virtual base station, allocates the user to the target virtual base station, and then the step a2 is performed; if the comparison is not passed, the user access request is not responded;
the resource blocks on the virtual base station are used for acquiring physical resources from the corresponding physical base station, and the virtual network controller on the virtual base station allocates the resources to the corresponding users; the buffer area on the virtual base station is used for storing the surplus resources received by the corresponding resource block after the corresponding virtual network controller allocates the resources to the corresponding user; and the user information module on the virtual base station is used for storing the information of the allocated users.
Compared with the prior art, the resource scheduling method for the user access request of the heterogeneous network has the following technical effects by adopting the technical scheme: the invention designs a resource scheduling method for a user access request of a heterogeneous network, which comprises the steps of sending the received user access request to a network resource manager through a base station, and receiving the position of a virtual base station which responds to the access request and is determined by the network resource manager according to the user access request; the virtual base station is provided with an independent virtual network controller, whether resources exist in the virtual base station is judged, and if the resources exist in the virtual base station, the virtual network controller allocates the resources in the virtual base station to users; if the virtual base station has no resources, the resources are redistributed to the virtual base station, so that the network delay is reduced, the response speed is improved, and the user experience is improved.
Drawings
Fig. 1 is a main flow chart of a resource scheduling method for a user access request in a heterogeneous network according to the present invention;
FIG. 2 is an optimized flowchart of a resource scheduling method for a user access request in a heterogeneous network according to the present invention;
fig. 3 is a schematic diagram of a heterogeneous network architecture according to the present invention.
Detailed Description
The following description will explain embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1, the present invention designs a resource scheduling method for a user access request in a heterogeneous network, where the heterogeneous network is composed of at least one physical base station, and at least one virtual base station is respectively constructed on each physical base station, and in actual application, the resource scheduling method specifically executes the following steps for the user access request:
step A1, a user sends a user access request to a target physical base station in the heterogeneous network, the target physical base station confirms a virtual base station responded according to the user access request as a target virtual base station, the user is distributed to the target virtual base station, and then the step A2 is carried out.
Step A2, obtaining the existing resources on the target virtual base station and the demand resources of each user distributed on the target virtual base station, and further obtaining the total demand resources of each user distributed on the target virtual base station, thereby judging whether the existing resources on the target virtual base station meet the demand of each user distributed, if yes, directly performing resource distribution on each user distributed by the target virtual base station; otherwise, go to step a3.
Step A3, aiming at each virtual base station on the target physical base station except the target virtual base station, obtaining the existing resources on the virtual base station and the demand resources of each user distributed on the virtual base station, and further obtaining the total demand resources of each user distributed on the virtual base station, thereby obtaining each resource surplus virtual base station on the target physical base station except the target virtual base station as each virtual base station to be processed, and then entering step A4.
And step A4, sequencing all the virtual base stations to be processed according to the sequence of the surplus resources from large to small, and transferring the surplus resources of all the virtual machines to be processed to the target virtual base station in sequence until the existing resources on the target virtual base station meet the requirements of all the distributed users or not.
While the above steps a1 to a4 are executed for the user access request, the number α of times that each virtual base station is determined to be excessive in resources and the number β of times that each virtual base station is determined to be insufficient in resources are periodically counted for all virtual base stations in the heterogeneous network, and based on the above period counting results for all virtual base stations, as shown in fig. 2, the following steps are periodically executed:
and B1, taking each virtual base station corresponding to each alpha larger than a preset surplus time threshold or each virtual base station corresponding to each beta larger than a preset shortage time threshold as an unstable virtual base station, and then entering the step B2. Here, for the preset excess number threshold and the preset insufficient number threshold, COUNT may be set as shown in fig. 2.
And B2, respectively aiming at each unstable virtual base station, obtaining the existing resources on the unstable virtual base station and the total required resources of each user distributed on the unstable virtual base station, thereby respectively judging whether each unstable virtual base station is in excess of resources or insufficient of resources to serve as the current resource state of each unstable virtual base station, and then entering the step B3.
And B3, respectively aiming at each unstable virtual base station, according to the current resource state of the unstable virtual base station, adjusting the resources on the unstable virtual base station by the physical base station corresponding to the unstable virtual base station, and further adjusting the resources of all unstable virtual base stations.
In the resource scheduling method for the user access request of the designed heterogeneous network, the following method is adopted for acquiring the required resources of each user distributed on each virtual base station in each physical base station:
specifically, in the step a2, the step A3, and the step B2, the following formula is used for determining the resource condition on the virtual base station:
obtaining the demand resource of each user distributed on each virtual base station in each physical base stationWherein,representing the required resource of the kth user distributed on the nth virtual base station in the jth physical base station; pjIndicating that the position of the user receives the transmitting power of the jth physical base station;indicating the channel gain corresponding to the k user distributed on the nth virtual base station in the jth physical base station,including path loss, shadow attenuation, antenna gain; σ represents the noise power;and the channel gain corresponding to the k user distributed on the nth virtual base station in the ith physical base station is represented, and the channel gain comprises path loss, shadow attenuation and antenna gain.
And a resource scheduling method of the designed heterogeneous network aiming at the user access request is provided, wherein the heterogeneous network is composed of at least one physical base station, a network resource manager is further designed to be respectively arranged on each physical base station on the basis of respectively constructing at least one virtual base station on each physical base station, and a virtual network controller is respectively arranged on each virtual base station on each physical base station. The network resource manager virtualizes the underlying network resources into a plurality of 'sliced' resources, and receives and processes resource requests from the virtual base station, so that the resources can meet user requirements to the maximum extent, and the resource allocation is more accurate.
The network resource manager on the physical base station is configured to perform, in step a1, an operation of receiving a user access request forwarded by the target physical base station from the user, determining a virtual base station responded according to the user access request, as the target virtual base station, and allocating the user to the target virtual base station; and the processor is further configured to perform the sorting for each virtual base station to be processed in step a4, perform scheduling operation for the virtual base stations to be processed in sequence, perform periodic statistics on the number α of times that each virtual base station is determined to be excessive in resources and the number β of times that each virtual base station is determined to be insufficient in resources, and perform the operations of step B1 to step B3 based on the above periodic statistics for all virtual base stations.
The virtual network controllers on the virtual base stations are used for executing the operation of step a2, the operation of step A3, and the resource transfer operation between the virtual base stations in step a4, wherein the virtual network controllers on the virtual base stations respectively obtain the resource conditions on the virtual base stations.
Based on the above designed heterogeneous network architecture, as shown in fig. 3, a resource block manager and a user information manager are further respectively disposed on each physical base station; each virtual base station is respectively provided with a resource block, a user information module and a cache region; the resource block manager on the physical base station is used for allocating or adjusting resources on the physical base station to each virtual base station corresponding to the resource block manager; the user information manager on the physical base station is used to store user information.
The virtual network controller distributes the resource blocks to users from the resource blocks, only the surplus resource blocks are sent to the buffer area, so that the surplus or the shortage can be known only by judging whether the buffer area has the resource blocks, in addition, the virtual network controller responds to the requests from other virtual base stations, also responds the resource blocks in the buffer area of one party to the resource blocks of the other party, and then responds to the users from the resource blocks, the connection between the virtual base stations is completed through the virtual network controller, the request and the response request are sent, the resource blocks are scheduled and managed, and the surplus resource blocks are transferred to the buffer area; whether the resources in the cache region in the virtual base station are too much or too little is analyzed by judging whether the resources exist in the virtual base station, so that the method is simple and convenient, the required purpose can be achieved, the response speed of the user request is further improved, and the user experience is improved.
In the step a1, a user sends a user access request to a target physical base station in the heterogeneous network, the target physical base station sends the received user access request to a corresponding network resource manager, the network resource manager analyzes the user access request to obtain user information, the network resource manager compares the user information with data in the user information manager, if the comparison is passed, the network resource manager confirms a virtual base station responded by the user access request as a target virtual base station, allocates the user to the target virtual base station, and then the step a2 is performed; and if the comparison is not passed, the user access request is not responded.
The resource blocks on the virtual base station are used for acquiring physical resources from the corresponding physical base station, and the virtual network controller on the virtual base station allocates the resources to the corresponding users; the buffer area on the virtual base station is used for storing the surplus resources received by the corresponding resource block after the corresponding virtual network controller allocates the resources to the corresponding user; and the user information module on the virtual base station is used for storing the information of the allocated users.
Under the technical scheme, when initially allocating resources, resources are allocated according to user information in a base station, and the activities of users are considered, the users are not necessarily connected with the same base station every time (for example, a user moves from one cell to another cell, the user is sure to be connected with the base station with the best signal and is certainly not connected with the base station of the previous cell), so that in a large physical base station, only when the users under all virtual base stations are increased, the user needs to request resources from the physical base station, the user is allocated according to the user information at an early stage, the difference between idle time and busy time of the user is not considered, the user requests the resources only when the user is busy, the state of the user can release part of the resources when the user is idle, and the probability that all resource blocks have no residual resources is relatively low; if the number of users in a certain time period suddenly increases to a preset value, resources in the virtual base station do not need to be called, and the resources in the virtual base station are redistributed according to the number of the users and the current network condition, so that the network stability is ensured; when the number of users is suddenly reduced, the resources in the virtual base station do not need to be processed, and redundant resources are stored in the virtual base station to be called when other users join the network.
Applying a resource scheduling method of a heterogeneous network aiming at a user access request to the reality, wherein the base station can be a mobile communication base station, in the present life, the mobile communication base station is gradually merged into the life of people, when two users send requests to the base station in a certain time period, the base station virtually allocates resources in the mobile communication base station to the virtual base station corresponding to the users according to the network conditions of the users and the number of the users, redundant resources are stored in a buffer area in the virtual base station, when a third user joins the current network, the base station receives information and then sends the information to a network resource manager, the network resource manager carries out matching to send the position of the virtual base station nearest to the user, and judges whether the virtual base station has the resources or not, and if the resource exists, the virtual network controller acquires the resource from the base station.
Similarly, when a plurality of users exist, the resources are distributed to the users according to the method, so that the resource redistribution to the virtual base station is reduced, the speed of responding to the user request is increased, the user use time is reduced, and the user experience is improved.
Through the method, the embodiment of the invention avoids the situation that each newly added user redistributes the resources of the virtual base station, thereby reducing the influence of the network environment in the redistribution process, reducing the network delay, improving the response speed and further improving the user experience.
In addition, the above embodiment also provides a reallocation method, which avoids the trouble of once calling the resources in a certain virtual base station by reallocating the virtual base stations according to the user information, the number of users, and the current network condition if the resources called by other virtual base stations cannot meet the requests when the number of users increases suddenly to a certain number, and ensures the network stability.
Therefore, the resource scheduling method for the user access request of the heterogeneous network, which is designed by the invention, sends the received user access request to the network resource manager through the base station, and receives the position of the virtual base station, which is determined by the network resource manager according to the user access request and responds to the access request; the virtual base station is provided with an independent virtual network controller, whether resources exist in the virtual base station is judged, and if the resources exist in the virtual base station, the virtual network controller allocates the resources in the virtual base station to users; if the virtual base station has no resources, the resources are redistributed to the virtual base station, so that the network delay is reduced, the response speed is improved, and the user experience is improved.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (5)

1. A resource scheduling method for a user access request of a heterogeneous network is characterized in that: the heterogeneous network is composed of at least one physical base station, at least one virtual base station is respectively constructed on each physical base station, and the resource scheduling method is to execute the following steps aiming at a user access request:
a1, a user sends a user access request to a target physical base station in a heterogeneous network, the target physical base station confirms a virtual base station responded according to the user access request as a target virtual base station, the user is distributed to the target virtual base station, and then the step A2 is carried out;
step A2, obtaining the existing resources on the target virtual base station and the demand resources of each user distributed on the target virtual base station, and further obtaining the total demand resources of each user distributed on the target virtual base station, thereby judging whether the existing resources on the target virtual base station meet the demand of each user distributed, if yes, directly performing resource distribution on each user distributed by the target virtual base station; otherwise go to step A3;
step A3, aiming at each virtual base station on the target physical base station except the target virtual base station, obtaining the existing resources on the virtual base station and the demand resources of each user distributed on the virtual base station, and further obtaining the total demand resources of each user distributed on the virtual base station, so as to obtain each resource surplus virtual base station on the target physical base station except the target virtual base station, and using the virtual base station as each virtual base station to be processed, and then entering step A4;
and step A4, sequencing all the virtual base stations to be processed according to the sequence of the surplus resources from large to small, and transferring the surplus resources of all the virtual machines to be processed to the target virtual base station in sequence until the existing resources on the target virtual base station meet the requirements of all the distributed users or not.
2. The method of claim 1, wherein the heterogeneous network performs resource scheduling for the user access request, and comprises: while the steps a1 to a4 are executed for the user access request, the number α of times that each virtual base station is determined to be excessive in resources and the number β of times that each virtual base station is determined to be insufficient in resources are periodically counted for all virtual base stations in the heterogeneous network, and based on the above-mentioned period counting results for all virtual base stations, the following steps are periodically executed:
step B1, taking each virtual base station corresponding to each alpha larger than a preset surplus time threshold value or each virtual base station corresponding to each beta larger than a preset shortage time threshold value as an unstable virtual base station, and then entering step B2;
step B2, respectively aiming at each unstable virtual base station, obtaining the existing resources on the unstable virtual base station and the total required resources of each user distributed on the unstable virtual base station, thereby respectively judging whether each unstable virtual base station is in excess of resources or insufficient of resources as the current resource state of each unstable virtual base station, and then entering step B3;
and B3, respectively aiming at each unstable virtual base station, according to the current resource state of the unstable virtual base station, adjusting the resources on the unstable virtual base station by the physical base station corresponding to the unstable virtual base station, and further adjusting the resources of all unstable virtual base stations.
3. The method for resource scheduling of user access request in heterogeneous network according to claim 1 or 2, wherein: in the step a2, the step A3, and the step B2, the determination of the resource condition on the virtual base station is performed according to the following formula:
<mrow> <msubsup> <mi>SINR</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>k</mi> </mrow> <mi>j</mi> </msubsup> <mo>=</mo> <mfrac> <mrow> <msup> <mi>P</mi> <mi>j</mi> </msup> <msubsup> <mi>G</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>k</mi> </mrow> <mi>j</mi> </msubsup> </mrow> <mrow> <msub> <mi>&amp;Sigma;</mi> <mrow> <mi>i</mi> <mo>&amp;NotEqual;</mo> <mi>j</mi> </mrow> </msub> <msup> <mi>P</mi> <mi>i</mi> </msup> <msubsup> <mi>G</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>k</mi> </mrow> <mi>i</mi> </msubsup> <mo>+</mo> <msup> <mi>&amp;sigma;</mi> <mn>2</mn> </msup> </mrow> </mfrac> </mrow>
obtaining the demand resource of each user distributed on each virtual base station in each physical base stationWherein,representing the required resource of the kth user distributed on the nth virtual base station in the jth physical base station; pjIndicating that the position of the user receives the transmitting power of the jth physical base station;representing the channel gain corresponding to the k user distributed on the nth virtual base station in the jth physical base station; σ represents the noise power;the expression represents the channel gain corresponding to the k user allocated to the n virtual base station in the i physical base station.
4. The method for resource scheduling of user access request in heterogeneous network according to claim 1 or 2, wherein: network resource managers are respectively arranged on each physical base station in the heterogeneous network, and virtual network controllers are respectively arranged on each virtual base station on each physical base station;
the network resource manager on the physical base station is configured to perform, in step a1, an operation of receiving a user access request forwarded by the target physical base station from the user, determining a virtual base station responded according to the user access request, as the target virtual base station, and allocating the user to the target virtual base station; the method is further used for performing the sequencing for each virtual base station to be processed in the step a4, performing scheduling operation for the virtual base stations to be processed in sequence, periodically counting the times alpha that each virtual base station is respectively judged to be excessive in resources and the times beta that each virtual base station is judged to be insufficient in resources, and performing the operations of the steps B1 to B3 based on the periodic counting results for all the virtual base stations;
the virtual network controllers on the virtual base stations are used for executing the operation of step a2, the operation of step A3, and the resource transfer operation between the virtual base stations in step a4, wherein the virtual network controllers on the virtual base stations respectively obtain the resource conditions on the virtual base stations.
5. The method of claim 4, wherein the resource scheduling method for the user access request in the heterogeneous network comprises: each physical base station is respectively provided with a resource block manager and a user information manager; each virtual base station is respectively provided with a resource block, a user information module and a cache region; the resource block manager on the physical base station is used for allocating or adjusting resources on the physical base station to each virtual base station corresponding to the resource block manager; the user information manager on the physical base station is used for storing user information;
in the step a1, a user sends a user access request to a target physical base station in the heterogeneous network, the target physical base station sends the received user access request to a corresponding network resource manager, the network resource manager analyzes the user access request to obtain user information, the network resource manager compares the user information with data in the user information manager, if the comparison is passed, the network resource manager confirms a virtual base station responded by the user access request as a target virtual base station, allocates the user to the target virtual base station, and then the step a2 is performed; if the comparison is not passed, the user access request is not responded;
the resource blocks on the virtual base station are used for acquiring physical resources from the corresponding physical base station, and the virtual network controller on the virtual base station allocates the resources to the corresponding users; the buffer area on the virtual base station is used for storing the surplus resources received by the corresponding resource block after the corresponding virtual network controller allocates the resources to the corresponding user; and the user information module on the virtual base station is used for storing the information of the allocated users.
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