CN107509223B - Method and device for constructing virtual cell - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/13—Cell handover without a predetermined boundary, e.g. virtual cells
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/00835—Determination of neighbour cell lists
- H04W36/008357—Determination of target cell based on access point [AP] properties, e.g. AP service capabilities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
- H04W36/322—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by location data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
- H04W4/027—Services making use of location information using location based information parameters using movement velocity, acceleration information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
Abstract
The application discloses a method and a device for constructing a virtual cell, which are used for solving the problem that in the prior art, when a user is in a mobile state, an access point connected with the user is frequently switched to cause the current service interruption of the user so as to influence the user experience, and the method comprises the following steps: determining each first access point which can establish communication connection with a user in a network within the next preset time interval; determining the service quality of each first access point and the selection tendency of the user to each first access point; determining the priority of the user accessing each first access point in the preset time interval according to the service quality of each first access point and the selection tendency of the user to each first access point; and determining a target access point according to the priority of each first access point, and adding the target access point into a virtual cell taking the user as the center.
Description
Technical Field
The present application relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for constructing a virtual cell.
Background
With the rapid development of the mobile internet and the internet of things, various novel business applications are also continuously emerging, which brings convenience to the life of people, and simultaneously provides higher requirements for the mobile communication network to deal with the explosive growth of mobile network data traffic and meet the experience rate of users.
To meet the requirements and technical challenges of typical application scenarios, a virtual cell centered on the user would eliminate the cell edge, breaking the traditional "cell" concept. In a virtual cell centered on a user, the user can select several access points around the user according to a certain criterion to form a set of service antennas, and the antennas in the set collectively provide service for the user in the center.
In the above scenario, when a user moves in an area including multiple access points, the access points in the virtual cell centered on the user are updated along with the movement of the user, so that some access points that are not in the original virtual cell but can serve the user will join the virtual cell, and some access points that do not satisfy the service condition for the user in the original virtual cell will be removed from the virtual cell, as shown in fig. 1, so that when the user moves among multiple cells, the access points connected to the user will be frequently switched, which will cause interruption delay in the current service of the user, thereby affecting the user experience.
Disclosure of Invention
The embodiment of the application provides a method for constructing a virtual cell, which is used for solving the problem that in the prior art, when a user is in a mobile state, an access point connected with the user is frequently switched to cause current service interruption of the user, so that user experience is influenced.
The embodiment of the application further provides a device for constructing a virtual cell, which is used for solving the problem that in the prior art, when a user is in a mobile state, an access point connected with the user is frequently switched to cause current service interruption of the user, so that user experience is influenced.
The embodiment of the application adopts the following technical scheme:
a method for constructing a virtual cell comprises the following steps:
determining each first access point which can establish communication connection with a user in a network within the next preset time interval;
determining the service quality of each first access point and the selection tendency of the user to each first access point, wherein the selection tendency is used for indicating the tendency degree of the user selecting to access the first access point in the next preset time interval;
determining the priority of the user accessing each first access point in the preset time interval according to the service quality of each first access point and the selection tendency of the user to each first access point;
and determining a target access point according to the priority of each first access point, and adding the target access point into a virtual cell taking the user as the center.
An apparatus for constructing a virtual cell, comprising:
the first determining unit is used for determining each first access point which can establish communication connection with the user in the network in the next preset time interval;
a second determining unit, configured to determine a service quality of each first access point and a selection tendency of the user for each first access point, where the selection tendency is used to indicate a degree of tendency of the user to select to access the first access point in the next preset time interval;
a third determining unit, configured to determine, according to the service quality of each first access point and the selection tendency of the user for each first access point, a priority for the user to access each first access point within the preset time interval;
and a fourth determining unit, configured to determine a target access point according to the priority of each first access point, and add the target access point to a virtual cell centered on the user.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
according to the method and the device, the service quality of each first access point in the network, which can establish communication connection with a user, and the selection tendency of the user to each first access point can be determined, wherein the selection tendency is used for indicating the tendency degree of the user to select to access the first access point in the next preset time interval, then the priority of the user to access each first access point in the preset time interval is determined according to the service quality of each first access point and the selection tendency of the user to each first access point, finally the target access point is determined according to the priority of each first access point, and the target access point is added into a virtual cell taking the user as the center. When the user moves among a plurality of cells, each target access point in the virtual cell taking the user as the center is determined according to the priority, so that the switching of the access points connected with the user can be reduced, the interruption time delay caused by the switching of the access points is reduced, and the user experience can be improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic diagram of a virtual cell centered on a user in the prior art;
fig. 2 is a schematic implementation flow chart of a method for constructing a virtual cell according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a virtual cell construction apparatus according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be clearly and completely described below with reference to the specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
In order to solve the problem that in the prior art, when a user is in a mobile state, an access point connected to the user is frequently switched to cause current service interruption of the user, thereby affecting user experience, an embodiment of the present application provides a method for constructing a virtual cell. In the following, embodiments of the method will be described in detail by taking an execution main body of the method as a control plane as an example, and it should be understood that the execution main body of the method is a control plane and is only an exemplary illustration, and should not be construed as a limitation to the method.
The schematic flow chart of the implementation of the method is shown in fig. 2, and includes:
the next preset time interval may be a time interval next to the current time interval, the size of the preset time interval is often larger than the time consumed for implementing the method provided by the present application, and the specific value may be determined according to an actual situation, for example, according to information such as the current moving speed of the user. The user in the embodiment of the present application may be a mobile terminal, for example, a terminal device capable of implementing a wireless communication service, such as a smart phone and a wearable device. The access point in the embodiment of the present application may be an access point capable of establishing a communication connection with a user so that the user can implement a wireless communication service, for example, the access point may be a wireless access point, a small cell, and the like.
Specifically, a first access point which can establish communication connection with a user in a network in a next preset time interval is determined, and first, a first message of the user and a second message of each access point in the network are received; and then determining the first access point which can establish communication connection with the user in the network in the next preset time interval according to each predicted position which the user is likely to be located in the next preset time interval and the coverage range and signal receiving power of each first access point which are contained in each second message.
On one hand, whether each predicted position is within the coverage range of a certain access point can be determined according to each predicted position contained in the first message and the coverage range of each first access point contained in each second message, and if it is determined that a certain predicted position is within the coverage range of a certain access point in the next preset time interval, the first access point corresponding to the coverage range can be determined as the access point capable of being connected with the user; on the other hand, whether the signal received power is greater than a preset value may be determined according to the signal received power included in the second message, and if it is determined that the signal received power is greater than the preset value, it may be determined that the access point corresponding to the signal received power is the first access point capable of establishing a communication connection with the user.
first, the service quality of each first access point capable of establishing a communication connection with the user may be determined according to the transmission power and the load of the access point included in the second message, and may specifically be determined by a formula
To determine, wherein, PjIs the transmission power, L, of the first access point jjIs the load of the first access point j.
Then, the first message may be determined according to each predicted location where the user may be located in the next preset time interval, the predicted speed at each predicted location, each first predicted path at each preset location, the probability of the user at each predicted location, and the coverage of each first access point included in each second message.
To use as followsThe specific process of determining the selection tendency of the user to the first access point j is described in detail by taking the predicted location m where the user may be located in the next preset time interval and the first access point j as examples: first, it is possible to determine the first expected path s contained in the first messagemAnd the coverage of the first access point j contained in the second message, to determine a second predicted path s contained in the first predicted path and within the coveragem,j(ii) a And then according to a second predicted path sm,jAnd the predicted speed v of the user at the predicted position mmTo determine the residence time t of the user in the coverage area of the first access point jm,j(ii) a Finally, according to the predicted position m and the probability P of the user at the predicted position mmAnd a dwell time tm,jTo determine the user's preference for selection of the first access point j. It should be noted that each predicted position where the user may be located in the next preset time interval, the predicted speed when the user is located in each predicted position, each first predicted path including each predicted position, and the probability of the user at each predicted position, which are included in the first message, may all be obtained by analyzing information such as historical position information, historical action trajectory, current action trajectory, and pedestrian movement trend in the area where the user is located, of the user.
Wherein, according to the second predicted path and the predicted speed, the residence time of the user in the coverage area is determined, and the residence time can be specifically determined by a formula
To determine, wherein the second predicted path sm,jFor the user at the predicted position m, a first predicted path smPart, v, of the coverage area of the first access point jmThe predicted speed of the user at the predicted position m. Because the residence time of the user in the coverage range of each first access point in the next preset time interval can be determined, when the access point which is added into the virtual cell is determined, the access point with long residence time can be considered to be preferentially added into the virtual cell, and the problem that the access point connected with the user is frequently switched to cause the current service interruption of the user when the user moves can be avoided。
Finally, the selection tendency of the user to the first access point j may be determined according to the set M of predicted locations where the user may be located in the next preset time interval, the probability of the user at the predicted location M (M ∈ M), and the residence time, and may specifically be determined by a formula
Where M is a set of predicted locations where the user is likely to be located within the next preset time interval, M ∈ M, PmIs the probability that the user is at the predicted position m within the next preset time interval, dm,jIs the distance, t, between the user and the first access point j when the user is at the predicted position m within the next preset time intervalm,jIs the residence time of the user within the coverage area of the first access point j as described above.
the method for determining the priority of the user accessing the first access point j is described by taking the first access point j as an example, and can be specifically represented by formula Aj＝αBj+βUjTo determine the priority of the user's access to the first access point j, where BjQuality of service, U, for the first access point j as described abovejFor the user's preference for selection of the first access point j as described above, α [0,1]And α + β is equal to 1, and α and β are all preset coefficients, and the specific values thereof can be set according to specific parameters such as the service quality of each access point.
And step 14, determining a target access point according to the priority of each first access point, and adding the target access point into a virtual cell taking the user as the center.
The method includes determining target access points according to priorities of first access points, specifically, determining the target access points of which the sum of experience rates is greater than or equal to a preset experience rate in a second access point, where in order to enable a user to accurately determine the experience rates after establishing a communication connection with the first access points, the second access point in the embodiment of the present application is the first access point capable of establishing a communication connection with the user. In addition, in order to preferentially select an access point with a high priority to join in a virtual cell with a user as a center, the priority of each target access point is often higher than that of a third access point, wherein the third access point is an access point except for the target access point in the second access point.
And determining each target access point of which the sum of experience rates is greater than or equal to a preset experience rate in the second access point, and determining each target access point according to the sequence from high priority to low priority, wherein the number of the target access points is the minimum number which meets the condition that the sum of experience rates is greater than or equal to the preset experience rate. Specifically, the following operations may be performed on the first access point in order from high priority to low priority: firstly, determining whether a user can establish communication connection with a first access point; if the user can establish communication connection with the first access point, determining a first experience rate after the user establishes communication connection with the first access point; then, judging whether the sum of the determined first experience rates is greater than or equal to a preset experience rate or not; and if the sum of the experience rates is determined to be greater than or equal to the preset experience rate, determining each first access point with the determined first experience rate as a target access point.
In order to sequentially determine the access points of which the priorities meet the preset conditions in each first access point, the number n of the first access points can be determined while each first access point capable of establishing communication connection with a user in the network is determined in the next preset time interval. Then, an array J ═ J including the first access points may be constructed in order of increasing priority1,j2,…,jnWhere j isiIs the first access point, i ∈ [1, n]And finally, determining the target access point from the array J. Next, taking the number of the first access points included in the array J as 6 as an example, a specific implementation process of determining the target access point from the second access points is described in detail:
step i, from the first access point j1Initially, it is determined whether the user can access the first access point j1Establishing communication connection;
step ii, if the user is determined to be able to contact the first access point j1And step iii is executed if the user is determined not to be able to establish the communication connection with the first access point j1C, establishing communication connection, and executing step v;
step iii, determining the user and the first access point j1Experience rate R after establishing communication connection1Whether greater than or equal to a preset experience rate Rreq；
Step iv, if R is determined1≥RreqThen the first access point j is set1Adding into a virtual cell with user as center, if determining R1＜RreqIf yes, executing step v;
v, determining whether the user can be connected with the first access point j2Establishing a communication connection;
step vi, if it is determined that the user can be connected with the first access point j2If a communication connection is established, step vii is executed, if it is determined that the user cannot communicate with the first access point j2Step viii is executed if the communication connection is established;
step vii, determine the user and the first access point j2Experience rate R after establishing communication connection2And R1Whether the sum of the sum is greater than or equal to a predetermined experience rate Rreq；
Step viii, if R is determined1+R2≥RreqThen the first access point j is set1And j2Adding into a virtual cell with user as center, if determining R1+R2<RreqIf yes, executing step ix;
step ix, determining whether the user can be connected with the first access point j3Establishing a communication connection;
……；
by analogy, target access points with the experience rate sum larger than or equal to the preset experience rate can be determined from the second access point, and finally, the target access points are added into the virtual cell with the user as the center. It should be noted that, in order to avoid too large computation amount, it is preferable that once each target access point whose sum of experience rates is greater than or equal to the preset experience rate is determined from the second access point, the determination operation on the other access points in the array J except the target access point may be terminated.
In the application, each determined target access point can be added into the virtual cell taking the user as the center before the next preset time interval, so that the position of the user is moved within the next preset time interval, the switching of the access points connected with the user cannot be caused, and the problem that the user experience is influenced due to the current service interruption of the user can be further avoided.
According to the method and the device, the service quality of each first access point in the network, which can establish communication connection with a user, and the selection tendency of the user to each first access point can be determined, wherein the selection tendency is used for indicating the tendency degree of the user to select to access the first access point in the next preset time interval, then the priority of the user to access each first access point in the preset time interval is determined according to the service quality of each first access point and the selection tendency of the user to each first access point, finally the target access point is determined according to the priority of each first access point, and the target access point is added into a virtual cell taking the user as the center. When the user moves among a plurality of cells, each target access point in the virtual cell taking the user as the center is determined according to the priority, so that the switching of the access points connected with the user can be reduced, the interruption time delay caused by the switching of the access points is reduced, and the user experience can be improved.
In order to solve the problem that in the prior art, when a user is in a mobile state, an access point connected to the user is frequently switched to cause current service interruption of the user, so that user experience is affected, an embodiment of the present application further provides a virtual cell construction apparatus, as shown in fig. 3, including the following functional units:
a first determining unit 21, configured to determine each first access point capable of establishing a communication connection with a user in a network in a next preset time interval;
a second determining unit 22, configured to determine a quality of service of each of the first access points and a selection tendency of the user for each of the first access points, where the selection tendency is used to indicate a degree of tendency of the user to select to access the first access point in the next preset time interval;
a third determining unit 23, configured to determine, according to the service quality of each first access point and the selection tendency of the user for each first access point, a priority for the user to access each first access point within the preset time interval;
a fourth determining unit 24, configured to determine a target access point according to the priority of each first access point, and add the target access point to a virtual cell centered on the user.
In an embodiment, the fourth determining unit 24 is specifically configured to:
determining each target access point of second access points, wherein the sum of experience rates of the second access points is greater than or equal to a preset experience rate, and the second access point is the first access point capable of establishing communication connection with the user; the priority of each target access point is higher than that of a third access point, and the third access point is an access point except the target access point in the second access points.
In an embodiment, the fourth determining unit 24 is specifically configured to:
and determining each target access point according to the priority from high to low, wherein the number of the target access points is the minimum number which meets the condition that the sum of experience rates is greater than or equal to a preset experience rate.
In one embodiment, the following operations are performed on the first access point in order from high priority to low priority:
determining whether the user can establish a communication connection with the first access point;
if the user can establish communication connection with the first access point, determining a first experience rate after the user establishes communication connection with the first access point;
judging whether the sum of the first experience rates is greater than or equal to a preset experience rate or not;
and if the sum of the first experience rates is judged to be greater than or equal to the preset experience rate, determining each first access point with the determined first experience rate as the target access point.
In an embodiment, the first determining unit 21 is specifically configured to:
receiving a first message of the user and a second message of each access point in the network;
and determining each first access point capable of establishing communication connection with the user in the network according to each predicted position where the user may be located in the preset time interval, and the coverage area and signal receiving power of each second access point included in each second message.
In an embodiment, the second determining unit 22 is specifically configured to:
determining the service quality of each first access point according to the transmission power and the load of each second access point contained in each second message;
determining the selection tendency of the user to each first access point according to each predicted position contained in the first message, each predicted speed of the user when the user is located at each predicted position in the preset time interval, each first predicted path of the user when the user is located at each predicted position in the preset time interval, the probability of the user being located at each predicted position in the preset time interval, and the coverage range of each second access point contained in each second message;
the quality of service is by a formula
Is determined wherein PjIs the transmission power, L, of the first access point jjIs the minus of the first access point jAnd (4) loading.
In an embodiment, the second determining unit 22 is further specifically configured to:
determining, according to each of the first predicted paths included in the first message and each of the coverage areas included in each of the second messages, each of second predicted paths included in each of the coverage areas of each of the first predicted paths;
determining each residence time of the user in each coverage area according to each second predicted path and each predicted speed;
determining the selection tendency of the user to each first access point according to each predicted position, the probability of the user being located at each predicted position and each residence time;
said dwell time is determined by the formula
Is determined, wherein sm,jIs a second predicted path sm,jFor the first predicted path smThe first expected path s is in the coverage area of the first access point jmFor a first predicted path, v, of the user at the predicted location mmA predicted speed of the user at the predicted position m;
said selection tendency is by formula
Determined, where M is a set of predicted positions of the user within the preset time interval, M ∈ M, PmIs the probability that the user is located at the predicted position m, dm,jIs the distance, t, between the user and the first access point j when the user is at the predicted position mm,jThe residence time of the user in the coverage area of the first access point j is obtained.
In one embodiment, the priority is given by formula Aj＝αBj+βUjIs determined in which BjQuality of service, U, for the first access point jjα and β are preset coefficients for the user's propensity to select the first access point j, α [0,1]And α + β is 1.
According to the method and the device, the service quality of each first access point in the network, which can establish communication connection with a user, and the selection tendency of the user to each first access point can be determined, wherein the selection tendency is used for indicating the tendency degree of the user to select to access the first access point in the next preset time interval, then the priority of the user to access each first access point in the preset time interval is determined according to the service quality of each first access point and the selection tendency of the user to each first access point, finally the target access point is determined according to the priority of each first access point, and the target access point is added into a virtual cell taking the user as the center. When the user moves among a plurality of cells, each target access point in the virtual cell taking the user as the center is determined according to the priority, so that the switching of the access points connected with the user can be reduced, the interruption time delay caused by the switching of the access points is reduced, and the user experience can be improved.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement the information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and alterations to this application will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (7)
1. A method for constructing a virtual cell, comprising:
determining each first access point which can establish communication connection with a user in a network within the next preset time interval;
determining the service quality of each first access point and the selection tendency of the user to each first access point, wherein the selection tendency is used for indicating the tendency degree of the user selecting to access the first access point in the next preset time interval;
determining the priority of the user accessing each first access point in the next preset time interval according to the service quality of each first access point and the selection tendency of the user to each first access point;
determining a target access point according to the priority of each first access point, and adding the target access point into a virtual cell taking the user as the center;
wherein, the determining each first access point capable of establishing communication connection with the user in the network within the next preset time interval includes:
receiving a first message of the user and a second message of each access point in the network;
determining each first access point capable of establishing communication connection with the user in the network according to each predicted position where the user may be located in the next preset time interval, and the coverage area and signal receiving power of each first access point included in each second message, wherein the positions are included in the first message;
wherein the determining the service quality of each first access point and the selection tendency of the user to each first access point includes:
determining the service quality of each first access point according to the transmission power and the load of each second access point contained in each second message;
determining the selection tendency of the user to each first access point according to each predicted position contained in the first message, each predicted speed of the user when the user is located at each predicted position in the next preset time interval, each first predicted path of the user when the user is located at each predicted position in the next preset time interval, the probability that the user is located at each predicted position in the next preset time interval, and the coverage range of each second access point contained in each second message;
wherein the determining the selection tendency of the user to each of the first access points comprises:
determining, according to each of the first predicted paths included in the first message and each of the coverage areas included in each of the second messages, each of second predicted paths included in each of the coverage areas of each of the first predicted paths;
determining each residence time of the user in each coverage area according to each second predicted path and each predicted speed;
determining the selection tendency of the user to each first access point according to each predicted position, the probability of the user being located at each predicted position and each residence time;
wherein the determining a target access point according to the priority of each first access point comprises:
determining each target access point of second access points, wherein the sum of experience rates of the second access points is greater than or equal to a next preset experience rate, and the second access point is the first access point capable of establishing communication connection with the user; the priority of each target access point is higher than that of a third access point, and the third access point is an access point except the target access point in the second access points.
2. The method of claim 1, wherein determining each of the target access points for which a sum of experience rates in the second access point is greater than or equal to a preset experience rate comprises:
and determining each target access point according to the priority from high to low, wherein the number of the target access points is the minimum number which meets the condition that the sum of experience rates is greater than or equal to the preset experience rate.
3. The method of claim 2, wherein determining each of the target access points in order of priority from high to low comprises:
sequentially performing the following operations on the first access point according to the sequence of the priority from high to low:
determining whether the user can establish a communication connection with the first access point;
if the user can establish communication connection with the first access point, determining a first experience rate after the user establishes communication connection with the first access point;
judging whether the sum of the first experience rates is greater than or equal to the preset experience rate or not;
and if the sum of the first experience rates is judged to be greater than or equal to the preset experience rate, determining each first access point with the determined first experience rate as the target access point.
4. The method of claim 3, wherein the quality of service is formulated by
Is determined wherein PjIs the transmission power, L, of the first access point jjIs the load of the first access point j.
5. The method of claim 4, wherein the residence time is by a formula
Is determined, wherein sm,jIs a second predicted path sm,jFor the first predicted path smThe first expected path s is in the coverage area of the first access point jmFor a first predicted path, v, of the user at the predicted location mmA predicted speed of the user at the predicted position m;
said selection tendency is by formula
Determined, wherein M is the predicted position of the user in the next preset time intervalSet, M ∈ M, PmIs the probability of the user being at the predicted position m, dm,jIs the distance, t, between the user and the first access point j when the user is at the predicted position mm,jThe residence time of the user in the coverage area of the first access point j is obtained.
6. The method of claim 1, wherein the priority is by formula aj＝αBj+βUjIs determined in which BjQuality of service, U, for the first access point jjα and β are preset coefficients for the user's preference for selection of the first access point j, α [0,1]And α + β is 1.
7. An apparatus for constructing a virtual cell, comprising:
the first determining unit is used for determining each first access point which can establish communication connection with the user in the network in the next preset time interval;
a second determining unit, configured to determine a service quality of each first access point and a selection tendency of the user for each first access point, where the selection tendency is used to indicate a degree of tendency of the user to select to access the first access point in the next preset time interval;
a third determining unit, configured to determine, according to the quality of service of each first access point and the selection tendency of the user for each first access point, a priority for the user to access each first access point within the next preset time interval;
a fourth determining unit, configured to determine a target access point according to the priority of each first access point, and add the target access point to a virtual cell centered on the user;
wherein the first determining unit is configured to:
receiving a first message of the user and a second message of each access point in the network;
determining each first access point capable of establishing communication connection with the user in the network according to each predicted position where the user may be located in the next preset time interval, and the coverage area and signal receiving power of each first access point included in each second message, wherein the positions are included in the first message;
wherein the second determination unit is configured to:
determining the service quality of each first access point according to the transmission power and the load of each second access point contained in each second message;
determining the selection tendency of the user to each first access point according to each predicted position contained in the first message, each predicted speed of the user when the user is located at each predicted position in the next preset time interval, each first predicted path of the user when the user is located at each predicted position in the next preset time interval, the probability that the user is located at each predicted position in the next preset time interval, and the coverage range of each second access point contained in each second message;
wherein the second determination unit is configured to:
determining, according to each of the first predicted paths included in the first message and each of the coverage areas included in each of the second messages, each of second predicted paths included in each of the coverage areas of each of the first predicted paths;
determining each residence time of the user in each coverage area according to each second predicted path and each predicted speed;
determining the selection tendency of the user to each first access point according to each predicted position, the probability of the user being located at each predicted position and each residence time;
wherein the fourth determining unit is configured to:
determining each target access point of second access points, wherein the sum of experience rates of the second access points is greater than or equal to a next preset experience rate, and the second access point is the first access point capable of establishing communication connection with the user; the priority of each target access point is higher than that of a third access point, and the third access point is an access point except the target access point in the second access points.
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| CN201710524827.6A CN107509223B (en) | 2017-06-30 | 2017-06-30 | Method and device for constructing virtual cell |
| PCT/CN2017/109854 WO2019000778A1 (en) | 2017-06-30 | 2017-11-08 | Method and apparatus for constructing virtual cell |
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| CN201710524827.6A CN107509223B (en) | 2017-06-30 | 2017-06-30 | Method and device for constructing virtual cell |
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| CN103874149B (en) * | 2012-12-10 | 2020-06-09 | 索尼公司 | Mobile handover management method, equipment and system in wireless communication network |
| CN103686895B (en) * | 2013-12-09 | 2017-05-03 | 北京邮电大学 | Switching control method, wireless network controller and access node |
| WO2015194810A1 (en) * | 2014-06-15 | 2015-12-23 | 엘지전자 주식회사 | Method and apparatus for receiving control channel by configuring user-centric virtual cell in wireless communication system |
| CN106576251B (en) * | 2014-08-06 | 2019-12-10 | Lg 电子株式会社 | Method and apparatus for supporting amorphous cell in wireless communication system |
| CN105451210A (en) * | 2014-09-29 | 2016-03-30 | 中兴通讯股份有限公司 | Data synchronous processing method and data synchronous processing device |
| CN106304267B (en) * | 2015-06-03 | 2019-04-16 | 上海无线通信研究中心 | A kind of virtual subdistrict selection method of customer-centric |
| CN105530677B (en) * | 2015-12-04 | 2019-01-15 | 清华大学 | A kind of super-intensive networking virtual subdistrict switching method based on user's positioning |
| CN105764100B (en) * | 2016-01-29 | 2019-06-04 | 北京邮电大学 | A kind of mobility enhanced scheme based on virtual subdistrict design towards the deployment of intensive small station |
| CN106028364B (en) * | 2016-07-11 | 2019-03-29 | 东南大学 | A kind of virtual subdistrict forming method for 5G high density network |
| CN106792985B (en) * | 2016-12-13 | 2017-12-12 | 北京邮电大学 | A kind of mobile terminal access point Forecasting Methodology and device |
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