CN109327909B - Power determination method and device for millimeter wave multi-connection network - Google Patents
Power determination method and device for millimeter wave multi-connection network Download PDFInfo
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- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
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- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
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Abstract
The embodiment of the invention provides a power determination method and a power determination device for a millimeter wave multi-connection network, which are applied to any millimeter wave access point in the millimeter wave multi-connection network, wherein the millimeter wave multi-connection network also comprises user equipment, and the method comprises the following steps: when receiving a service request sent by user equipment, determining the time slot allocation condition of each user equipment in each downlink transmission period according to the current channel quality condition; calculating to obtain an estimated transmission power value corresponding to each user equipment in each time slot according to a preset price corresponding to a preset unit transmission power, and calculating an optimal price corresponding to the unit transmission power according to the estimated transmission power value corresponding to each user equipment in each time slot; and determining the corresponding optimal transmitting power value of each user equipment in each time slot according to the optimal price corresponding to the unit transmitting power. The embodiment can control the transmitting power of the millimeter wave access point and reduce the load pressure between the 5G low-frequency base station and the millimeter wave access point.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a power determination method and apparatus for a millimeter wave multi-connection network.
Background
Millimeter wave technology is one of the key technologies of a 5G mobile communication system, and can greatly expand available radio spectrum resources by using a frequency band between 30 and 300GHz so as to meet the requirements of 5G mobile communication on bandwidth, connection density and data rate. However, there are many challenges for communication in the millimeter wave frequency band, and the high frequency physical characteristics of the millimeter wave cause severe free space path loss and penetration loss, which may cause frequent connection interruption and affect service quality under the condition of no line-of-sight transmission.
For this reason, the third Generation Partnership Project (3gpp, 3rd Generation Partnership Project) introduced a "Multi-connection" technique to improve the reliability of millimeter wave communication. Namely, each user equipment is simultaneously accessed to a plurality of millimeter wave access points at different positions, when a link of a certain millimeter wave access point is blocked by an obstacle, the user equipment can continue to carry out line-of-sight communication with other unblocked millimeter wave access points, and the continuity and reliability of the communication are ensured. Meanwhile, in the case of a good communication link environment, the multiple connections can increase the data rate of the user equipment by the diversity gain.
Radio resource management is a key problem for optimizing network performance, and due to the introduction of multi-connection technology, the number of links existing in the network at the same time is increased, and the complexity of the radio resource management problem is greatly increased, including the power control problem. In the millimeter wave multi-connection network, a double-layer structure is generally considered, namely, a 5G low-frequency base station, a millimeter wave access point and user equipment, uplink and downlink data of all the user equipment are exchanged between the 5G low-frequency base station and the millimeter wave access point, and severe load pressure is caused on a backhaul link between the two, so that the transmission power of the millimeter wave access point cannot be increased without limit to increase the data rate of a user.
Therefore, how to control the transmission power of the millimeter wave access point, and further reduce the load pressure between the 5G low-frequency base station and the millimeter wave access point becomes a problem to be solved urgently.
Disclosure of Invention
The embodiment of the invention aims to provide a power determination method and device for a millimeter wave multi-connection network, which are used for controlling the transmitting power of a millimeter wave access point so as to reduce the load pressure between a 5G low-frequency base station and the millimeter wave access point.
In a first aspect, an embodiment of the present invention provides a power determination method for a millimeter wave multi-connection network, where the method is applied to any millimeter wave access point in the millimeter wave multi-connection network, the millimeter wave multi-connection network further includes a user equipment, and the method includes:
when receiving a service request sent by the user equipment, determining the time slot allocation condition of each user equipment in each downlink transmission period according to the current channel quality condition;
calculating to obtain an estimated transmission power value corresponding to each user equipment in each time slot according to a preset price corresponding to a preset unit transmission power, and calculating an optimal price corresponding to the unit transmission power according to the estimated transmission power value corresponding to each user equipment in each time slot;
and determining the corresponding optimal transmitting power value of each user equipment in each time slot according to the optimal price corresponding to the unit transmitting power.
Optionally, the calculating, according to the preset price corresponding to the preset unit transmitting power, to obtain the pre-estimated transmitting power value corresponding to each user equipment in each time slot, and according to the pre-estimated transmitting power value corresponding to each user equipment in each time slot, calculating the optimal price corresponding to the unit transmitting power, includes:
taking all millimeter wave access points in the millimeter wave multi-connection network as leaders and all user equipment as followers to construct a Starkeberg game;
calculating to obtain an estimated transmission power value corresponding to each user equipment in each time slot according to a preset price corresponding to a preset unit transmission power and the Starkeberg game;
and substituting the corresponding estimated transmission power value of each user equipment in each time slot into the benefit function of the millimeter wave access point, and solving the balance point of the benefit function to obtain the optimal price corresponding to the unit transmission power.
Optionally, the solving the equilibrium point of the benefit function to obtain the optimal price corresponding to the unit transmitting power includes:
selecting an initial price w i Making the calculation result of the current benefit function zero;
in each iteration, the price is increased or decreased by delta = delta x 0.99, and the corresponding benefit function value is calculated; if the maximum benefit can be obtained by raising the price, then in the next iteration, the price is changed to w i ＝w i + Δ, change the price to w in the next iteration if the maximum benefit can be obtained by lowering the price i ＝w i - Δ, otherwise w i Keeping the same;
and when the price is not changed any more, taking the current price as the optimal price corresponding to the unit transmitting power.
Optionally, the determining, according to the optimal price corresponding to the unit transmission power, the optimal transmission power value corresponding to each user equipment in each timeslot includes:
and substituting the optimal price corresponding to the unit transmitting power into the optimal reaction function of each user equipment to obtain the corresponding optimal transmitting power value of each user equipment in each time slot.
In a second aspect, an embodiment of the present invention provides a power determining apparatus for a mm-wave multi-connection network, which is applied to any mm-wave access point in the mm-wave multi-connection network, where the mm-wave multi-connection network further includes a user equipment, and the apparatus includes:
a determining module, configured to determine, when receiving a service request sent by the ue, a time slot allocation condition of each ue in each downlink transmission period according to a current channel quality status;
the calculation module is used for calculating to obtain the corresponding estimated transmitting power value of each user equipment in each time slot according to the preset price corresponding to the preset unit transmitting power, and calculating the corresponding optimal price of the unit transmitting power according to the corresponding estimated transmitting power value of each user equipment in each time slot;
and the processing module is used for determining the corresponding optimal transmitting power value of each user equipment in each time slot according to the optimal price corresponding to the unit transmitting power.
Optionally, the calculation module includes:
the construction submodule is used for constructing a Starkeberg game by taking all millimeter wave access points in the millimeter wave multi-connection network as leaders and all user equipment as followers;
the computing submodule is used for computing to obtain a corresponding estimated transmitting power value of each user equipment in each time slot according to a preset price corresponding to a preset unit transmitting power and the Starkeberg game;
and the execution submodule is used for substituting the estimated transmission power value corresponding to each user equipment in each time slot into the benefit function of the millimeter wave access point, solving the equilibrium point of the benefit function and obtaining the optimal price corresponding to the unit transmission power.
Optionally, the execution sub-module is specifically configured to:
selecting an initial price w i Making the calculation result of the current benefit function zero;
in each iteration, the price is increased or decreased by delta = delta x 0.99, and the corresponding benefit function value is calculated; if the maximum benefit can be obtained by raising the price, then in the next iteration, the price is changed to w i ＝w i + Δ, change the price to w in the next iteration if the maximum benefit can be obtained by lowering the price i ＝w i - Δ, otherwise w i Keeping the original shape;
and when the price is not changed any more, taking the current price as the optimal price corresponding to the unit transmitting power.
Optionally, the processing module is specifically configured to:
and substituting the optimal price corresponding to the unit transmitting power into the optimal reaction function of each user equipment to obtain the corresponding optimal transmitting power value of each user equipment in each time slot.
In a third aspect, an embodiment of the present invention provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete mutual communication through the communication bus;
the memory is used for storing a computer program;
the processor is configured to implement the method steps of the first aspect when executing the program stored in the memory.
In a fourth aspect, the present invention provides a computer-readable storage medium, in which a computer program is stored, and the computer program, when executed by a processor, implements the method steps according to the first aspect.
In the embodiment of the invention, the optimal transmitting power value of each user equipment can be further optimized by optimizing the optimal price corresponding to the unit transmitting power of the millimeter wave access point, namely, the power control in the millimeter wave multi-connection network is realized, the benefits of the millimeter wave access point and the user equipment are improved on the premise of not causing serious load to a millimeter wave access point return link, and the service quality of the user equipment is further improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. Of course, not all of the advantages described above need to be achieved at the same time in the practice of any one product or method of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a millimeter wave multi-connection network according to an embodiment of the present invention;
fig. 2 is a flowchart of a power determination method for a millimeter wave multi-connection network according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a Starkeberg game constructed in accordance with an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a power determination apparatus for a millimeter wave multi-connection network according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
First, a power determination method for a millimeter wave multi-connection network according to an embodiment of the present invention is described.
As shown in fig. 1, a schematic diagram of a millimeter wave multi-connection network according to an embodiment of the invention is shown. In the coverage area of a 5G low-frequency base station, N millimeter wave access points and M user equipment are randomly and uniformly distributed to form a whole millimeter wave access point set
And user set
The method provided by the embodiment of the invention can be applied to a millimeter wave multi-connection network. In particular, the method can be applied to any millimeter wave access point in the millimeter wave multi-connection network. As shown in fig. 2, a method for determining power in a mm-wave multi-connection network according to an embodiment of the present invention may include the following steps:
s201, when receiving a service request sent by user equipment, determining the time slot allocation condition of each user equipment in each downlink transmission period according to the current channel quality condition;
the process of determining the time slot allocation condition of each user equipment in each downlink transmission period by the millimeter wave access point may adopt any existing technology, and the embodiment of the present invention does not limit this.
Taking the network diagram shown in fig. 1 and downlink transmission as examples, each ue in a cell
And simultaneously accessing all millimeter wave access points and requesting service. The millimeter wave access point and the user equipment establish a communication link through a beam forming technology, and the interference between the users is ignored. Each downlink transmission period comprises K time slots, and each millimeter wave access point
In each time slot
Only one user equipment can be served. The millimeter wave access point determines the time slot allocation scheme according to the channel quality condition, which is expressed as
Wherein
The millimeter wave access point i sends data to the user equipment j in the time slot k; in the same way
It indicates that the user equipment j is not served by the mm wave access point i in the time slot k.
S202, calculating to obtain the corresponding pre-estimated transmitting power value of each user equipment in each time slot according to the preset price corresponding to the preset unit transmitting power, and calculating the corresponding optimal price of the unit transmitting power according to the corresponding pre-estimated transmitting power value of each user equipment in each time slot;
when a plurality of millimeter wave access points serve the same user equipment in the same time slot, the millimeter wave access points send the same data to the user on the same time-frequency resource block, the bandwidth is normalized, and the frequency spectrum efficiency of the user equipment j in the time slot k is the same
Wherein
The transmit power purchased for user device j at slot k to the mm-wave access point,
channel gain, N, for millimeter wave access point i and user equipment j in time slot k 0 Is the noise power.
In order to avoid causing too high load to a backhaul link, each millimeter wave access point sets a price w for unit transmission power i The benefit function of the millimeter wave access point i is defined as limiting the service requested by the user
Accordingly, the benefit function of user equipment j is
Wherein gamma is j The gains available per spectral efficiency are exploited for user equipment j.
In the millimeter wave multi-connection network, it is difficult to coordinate all millimeter wave access points and user equipment simultaneously to solve an optimal power control scheme. Therefore, we consider constructing the power control problem as a Starbucks Game.
The Starbucker game is used as a game model in economics and plays an important role in network optimization. In the Stackelberg game, a group of leaders are included, the leaders can make a strategy preferentially by predicting the optimal reaction of the followers, the followers make own strategies according to the strategy of the leaders, and both the leaders and the followers are used for maximizing the benefit function of the followers.
In the embodiment of the present invention, a starkeberg game may be constructed, as shown in fig. 3, all millimeter wave access points may be used as a leader to predict an optimal response of a user equipment, and a policy of the user equipment is preferentially selected, and all user equipment is used as a follower to make an optimal response of the user equipment according to the policy of the millimeter wave access points.
Specifically, the policy of the millimeter wave access point i may be denoted as w i The strategy of all millimeter wave access points is
By using
Representing the policies of all millimeter wave access points except i. Similarly, we use p j And p denote the policies of user device j and all user devices, respectively. To pair
And
the strategy space is
Wherein P is max Is the maximum transmit power.
Order to
In order to obtain the benefit as much as possible, when each millimeter wave access point makes its own strategy, it is necessary to predict the optimal response of the user equipment and consider the strategies of other millimeter wave access points. Thus, gaming between millimeter wave access points
For non-cooperative gaming, where each millimeter wave access point i needs to solve the following optimaSolving the problem:
based on the strategy w of the millimeter wave access point, each user equipment formulates a strategy to maximize respective benefits by solving the following optimization problems:
based on the above analysis, the power control problem is the starkeberg game between the millimeter wave access point and the user equipment. And solving the balance of the game by using a reverse induction method, namely assuming a pricing strategy w of a given millimeter wave access point, predicting the optimal response of each user equipment, namely predicting the transmitting power, and substituting the optimal response into a benefit function of the millimeter wave access point to solve the optimal pricing strategy. A detailed solving process is given below.
Observing the benefit function of the user equipment, the method can find that the benefit function value of each user equipment is only equal to the decision p of the user equipment under the condition of the pricing strategy w of the millimeter wave access point j In connection, assuming that at least one mm-wave access point serves user equipment j in time slot k, the benefit function for user equipment j
To make an association
Second order partial derivative of
Wherein,
The benefit function of the user equipment j takes the maximum value, therefore, when the time slot k has at least one millimeter wave access point serving the user equipment j, the optimal transmitting power corresponding to the user equipment j is the value
If not, then the mobile terminal can be switched to the normal mode,
next, substituting the predicted optimal strategy of the user equipment into the benefit function of the millimeter wave access point, the optimization problem of the millimeter wave access point becomes
The problem is thatThe nash equilibrium problem is equivalent to a variational inequality problem in order to prove that the nash equilibrium problem has an equilibrium solution. Given the Nash equalization problem in the above equation
Policy space W of each millimeter wave access point i Is closed and convex, a benefit function
With respect to w being continuously differentiable, for a given w -i To, for
Obtaining w i Second order partial derivative of (2) can be obtained
Wherein
Determine the relation w i Is less than zero, so for a given w -i ，
Is about w i So that the Nash equilibrium problem is equivalent to the variational inequality problem
Wherein
Further, due to
Is convex and tight, F is
Is monotonous, so the problem of variation inequality
There are non-empty solution sets and nash equalization has an equalization point.
Each millimeter wave access point in the game is selfish, and respective benefit functions are maximized by selecting strategies, so that the equilibrium points of the millimeter wave access points can be solved by using an iterative algorithm. We use the following iterative algorithm based on the sub-gradient method:
first, initialization is performed. Selecting a higher price w for each millimeter wave access point i i At this time, the transmission power purchased by all users is zero, and correspondingly, the benefit of each millimeter wave access point i is zero;
and secondly, iteration. In each iteration, each millimeter wave access point i attempts to increase or decrease the price by Δ = Δ × 0.99. When the value of Δ is obtained in the first iteration, a value that is equal to the magnitude of the initial price and smaller than the initial price may be selected, for example, when the initial price of any mmwave access point is 5, the value of Δ may be 1. If the maximum benefit can be obtained by increasing the price, the millimeter wave access point i changes the price to w in the next iteration i ＝w i + Δ, in the next iteration the mmwave access point i changes the price to w if the maximum benefit can be obtained by reducing the price i ＝w i - Δ, otherwise w i Keeping the same;
and thirdly, ending the iteration. When the prices of all the millimeter wave access points are not changed any more, namely, any millimeter wave access point cannot increase the benefit of the millimeter wave access point by changing the strategy of the millimeter wave access point, nash equilibrium is achieved, iteration is terminated, and the current price is used as the optimal price corresponding to the unit transmitting power.
S203, according to the optimal price corresponding to the unit transmitting power, the optimal transmitting power value corresponding to each user equipment in each time slot is determined.
For example, the optimal price corresponding to the unit transmission power may be substituted into the optimal response function of each ue, so as to obtain the optimal transmission power value corresponding to each ue in each timeslot.
In the embodiment of the invention, the optimal transmitting power value of each user equipment can be further optimized by optimizing the optimal price corresponding to the unit transmitting power of the millimeter wave access point, namely, the power control in the millimeter wave multi-connection network is realized, the benefits of the millimeter wave access point and the user equipment are improved on the premise of not causing serious load to a millimeter wave access point return link, and the service quality of the user equipment is further improved.
Correspondingly, an embodiment of the present invention further provides a power determining apparatus for a mm-wave multi-connection network, where the apparatus is applied to any mm-wave access point in the mm-wave multi-connection network, and the mm-wave multi-connection network further includes a user equipment, as shown in fig. 4, the apparatus includes:
a determining module 410, configured to determine, according to a current channel quality status, a time slot allocation condition of each ue in each downlink transmission period when receiving a service request sent by the ue;
a calculating module 420, configured to calculate a pre-estimated transmit power value corresponding to each user equipment in each time slot according to a preset price corresponding to a preset unit transmit power, and calculate an optimal price corresponding to the unit transmit power according to the pre-estimated transmit power value corresponding to each user equipment in each time slot;
the processing module 430 is configured to determine an optimal transmit power value corresponding to each ue in each timeslot according to the optimal price corresponding to the unit transmit power.
In the embodiment of the invention, the optimal transmitting power value of each user equipment can be further optimized by optimizing the optimal price corresponding to the unit transmitting power of the millimeter wave access point, namely, the power control in the millimeter wave multi-connection network is realized, the benefits of the millimeter wave access point and the user equipment are improved on the premise of not causing serious load to a millimeter wave access point return link, and the service quality of the user equipment is further improved.
As an implementation manner of the embodiment of the present invention, the calculating module 420 includes:
the building submodule is used for taking all millimeter wave access points in the millimeter wave multi-connection network as leaders and all the user equipment as followers to build a Starkeberg game;
the computing submodule is used for computing to obtain a corresponding estimated transmitting power value of each user equipment in each time slot according to a preset price corresponding to a preset unit transmitting power and the Starkeberg game;
and the execution submodule is used for substituting the estimated transmission power value corresponding to each user equipment in each time slot into the benefit function of the millimeter wave access point, solving the equilibrium point of the benefit function and obtaining the optimal price corresponding to the unit transmission power.
As an implementation manner of the embodiment of the present invention, the execution submodule is specifically configured to:
selecting an initial price w i Making the calculation result of the current benefit function zero;
in each iteration, the price is increased or decreased by delta = delta x 0.99, and the corresponding benefit function value is calculated; if the maximum benefit can be obtained by raising the price, then in the next iteration, the price is changed to w i ＝w i + Δ, change the price to w in the next iteration if the maximum benefit can be obtained by lowering the price i ＝w i - Δ, otherwise w i Keeping the original shape;
and when the price is not changed any more, taking the current price as the optimal price corresponding to the unit transmitting power.
As an implementation manner of the embodiment of the present invention, the processing module 430 is specifically configured to:
and substituting the optimal price corresponding to the unit transmitting power into the optimal reaction function of each user equipment to obtain the corresponding optimal transmitting power value of each user equipment in each time slot.
Correspondingly, an embodiment of the present invention further provides an electronic device, as shown in fig. 5, including a processor 501, a communication interface 502, a memory 503 and a communication bus 504, where the processor 501, the communication interface 502 and the memory 503 complete mutual communication through the communication bus 504;
the memory 503 is used for storing computer programs;
the processor 501 is configured to implement a power determination method for a millimeter wave multi-connection network when executing a program stored in the memory, and is applied to any millimeter wave access point in the millimeter wave multi-connection network, where the millimeter wave multi-connection network further includes a user equipment, and the method includes:
when receiving a service request sent by the user equipment, determining the time slot allocation condition of each user equipment in each downlink transmission period according to the current channel quality condition;
calculating to obtain an estimated transmission power value corresponding to each user equipment in each time slot according to a preset price corresponding to a preset unit transmission power, and calculating an optimal price corresponding to the unit transmission power according to the estimated transmission power value corresponding to each user equipment in each time slot;
and determining the corresponding optimal transmitting power value of each user equipment in each time slot according to the optimal price corresponding to the unit transmitting power.
The communication bus 504 mentioned above may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus 504 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The communication interface 502 is used for communication between the above-described electronic apparatus and other apparatuses.
The Memory 503 may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the processor.
The Processor 501 may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.
In the embodiment of the invention, the optimal transmitting power value of each user equipment can be further optimized by optimizing the optimal price corresponding to the unit transmitting power of the millimeter wave access point, namely, the power control in the millimeter wave multi-connection network is realized, the benefits of the millimeter wave access point and the user equipment are improved on the premise of not causing serious load to a millimeter wave access point return link, and the service quality of the user equipment is further improved.
Correspondingly, the embodiment of the invention also provides a computer readable storage medium. The computer-readable storage medium has stored therein a computer program which, when executed by a processor, implements a power determination method for a mmwave multi-connection network, applied to any mmwave access point in the mmwave multi-connection network, the mmwave multi-connection network further including a user equipment, the method comprising:
when receiving a service request sent by the user equipment, determining the time slot allocation condition of each user equipment in each downlink transmission period according to the current channel quality condition;
calculating to obtain an estimated transmission power value corresponding to each user equipment in each time slot according to a preset price corresponding to a preset unit transmission power, and calculating an optimal price corresponding to the unit transmission power according to the estimated transmission power value corresponding to each user equipment in each time slot;
and determining the corresponding optimal transmitting power value of each user equipment in each time slot according to the optimal price corresponding to the unit transmitting power.
The computer-readable storage medium may include, but is not limited to, a Random Access Memory (RAM), a Dynamic Random Access Memory (DRAM), a Static Random Access Memory (SRAM), a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read Only Memory (EPROM), an Electrically Erasable Programmable Read Only Memory (EEPROM), a flash memory (e.g., a NOR-type flash memory or a NAND-type flash memory), a Content Addressable Memory (CAM), a polymer memory (e.g., a ferroelectric polymer memory), a phase change memory, a ovonic memory, a Silicon-Oxide-Silicon-Nitride-Oxide-Silicon (SONOS) memory, a magnetic or optical card, or any other suitable type of computer-readable storage medium.
In the embodiment of the invention, the optimal transmitting power value of each user equipment can be further optimized by optimizing the optimal price corresponding to the unit transmitting power of the millimeter wave access point, namely, the power control in the millimeter wave multi-connection network is realized, the benefits of the millimeter wave access point and the user equipment are improved on the premise of not causing serious load to a millimeter wave access point return link, and the service quality of the user equipment is further improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present specification are described in a related manner, each embodiment focuses on differences from other embodiments, and the same and similar parts in the embodiments are referred to each other. In particular, as for the apparatus, the electronic device, and the storage medium, since they are substantially similar to the method embodiments, the description is simple, and the relevant points can be referred to only the partial description of the method embodiments.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. A power determination method for a millimeter wave multi-connection network, the method being applied to any millimeter wave access point in the millimeter wave multi-connection network, the millimeter wave multi-connection network further including a user equipment, the method comprising:
when receiving a service request sent by the user equipment, determining the time slot allocation condition of each user equipment in each downlink transmission period according to the current channel quality condition;
taking all millimeter wave access points in the millimeter wave multi-connection network as leaders and all user equipment as followers to construct a Starkeberg game; calculating to obtain an estimated transmission power value corresponding to each user equipment in each time slot according to a preset price corresponding to a preset unit transmission power and the Starkeberg game; substituting the corresponding estimated transmission power value of each user equipment in each time slot into a benefit function of the millimeter wave access point, and solving an equilibrium point of the benefit function to obtain the optimal price corresponding to the unit transmission power;
and determining the corresponding optimal transmitting power value of each user equipment in each time slot according to the optimal price corresponding to the unit transmitting power.
2. The method of claim 1, wherein solving the equilibrium point of the merit function to obtain an optimal price per unit transmit power comprises:
selecting an initial price w i Making the calculation result of the current benefit function zero;
in each iteration, the price is increased or decreased by delta = delta x 0.99, and the corresponding benefit function value is calculated; if the maximum benefit can be obtained by raising the price, then in the next iteration, the price is changed to w i ＝w i + Δ, change the price to w in the next iteration if the maximum benefit can be obtained by lowering the price i ＝w i - Δ, otherwise w i Keeping the same;
and when the price is not changed any more, taking the current price as the optimal price corresponding to the unit transmitting power.
3. The method of claim 1, wherein the determining the optimal transmission power value corresponding to each ue in each timeslot according to the optimal price corresponding to the unit transmission power comprises:
and substituting the optimal price corresponding to the unit transmitting power into the optimal reaction function of each user equipment to obtain the corresponding optimal transmitting power value of each user equipment in each time slot.
4. A power determination apparatus for a mm-wave multi-connectivity network, applied to any mm-wave access point in the mm-wave multi-connectivity network, the mm-wave multi-connectivity network further comprising a user equipment, the apparatus comprising:
a determining module, configured to determine, when receiving a service request sent by the ue, a time slot allocation condition of each ue in each downlink transmission period according to a current channel quality status;
a computing module, comprising: the construction submodule is used for constructing a Starkeberg game by taking all millimeter wave access points in the millimeter wave multi-connection network as leaders and all user equipment as followers; the computing submodule is used for computing to obtain a corresponding estimated transmitting power value of each user equipment in each time slot according to a preset price corresponding to a preset unit transmitting power and the Starkeberg game; the execution submodule is used for substituting the estimated transmission power value corresponding to each user equipment in each time slot into a benefit function of the millimeter wave access point, solving an equilibrium point of the benefit function and obtaining the optimal price corresponding to unit transmission power;
and the processing module is used for determining the corresponding optimal transmitting power value of each user equipment in each time slot according to the optimal price corresponding to the unit transmitting power.
5. The apparatus of claim 4, wherein the execution submodule is specifically configured to:
selecting an initial price w i Making the calculation result of the current benefit function be zero;
in each iteration, the price is increased or decreased by delta = delta x 0.99, and the corresponding benefit function value is calculated; if the maximum benefit can be obtained by raising the price, then in the next iteration, the price is changed to w i ＝w i + Δ, change the price to w in the next iteration if the maximum benefit can be obtained by lowering the price i ＝w i - Δ, otherwise w i Keeping the original shape;
and when the price is not changed any more, taking the current price as the optimal price corresponding to the unit transmitting power.
6. The apparatus according to claim 4, wherein the processing module is specifically configured to:
and substituting the optimal price corresponding to the unit transmitting power into the optimal reaction function of each user equipment to obtain the corresponding optimal transmitting power value of each user equipment in each time slot.
7. An electronic device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete communication with each other through the communication bus;
the memory is used for storing a computer program;
the processor, when executing the program stored in the memory, implementing the method steps of any of claims 1-3.
8. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method steps of any one of claims 1 to 3.
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| CN103269487B (en) * | 2013-04-22 | 2018-02-02 | 中国人民解放军理工大学通信工程学院 | Dynamic disturbance management method based on game theory in femtocell network downlink |
| WO2015058005A2 (en) * | 2013-10-16 | 2015-04-23 | Interdigital Patent Holdings, Inc. | METHOD AND SYSTEM FOR MILLIMETER WAVE HOTSPOT (mmH) BACKHAUL AND PHYSICAL (PHY) LAYER TRANSMISSIONS |
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| KR101798341B1 (en) * | 2016-11-25 | 2017-11-15 | 연세대학교 산학협력단 | Method for Estimating Beam Pattern in Millimeter Wave Channel |
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