CN109982249B - Base station transmitting power adjusting method and related equipment - Google Patents
Base station transmitting power adjusting method and related equipment Download PDFInfo
- Publication number
- CN109982249B CN109982249B CN201910208531.2A CN201910208531A CN109982249B CN 109982249 B CN109982249 B CN 109982249B CN 201910208531 A CN201910208531 A CN 201910208531A CN 109982249 B CN109982249 B CN 109982249B
- Authority
- CN
- China
- Prior art keywords
- distance
- target area
- radius
- determining
- base station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/32—TPC of broadcast or control channels
Abstract
The invention discloses a method for adjusting the transmitting power of a base station and related equipment, which are based on the existing eMBMS framework design, and can improve the system throughput rate without increasing the length of a CP, reducing the spectrum efficiency and losing the mobility support through the whole network cooperative power control.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method for adjusting transmit power of a base station and a related device.
Background
MBSFN (Multicast Broadcast Single Frequency Network) is a Single Frequency Network composed of a plurality of adjacent cells providing eMBMS (enhanced Multimedia Broadcast Multicast Service) Service, and a Service coverage Area of MBSFN is called as an MA (MBSFN Area).
In general, the area of an MA is typically equivalent to the sum of several or even tens of unicast cells, which means that a wireless signal propagating within the MA will experience a larger multipath delay before reaching a receiving device than it would in a unicast cell. To counteract this ISI (Inter-Symbol Interference) caused by multipath delay, eMBMS uses a CP (Extended Cyclic Prefix, referred to as Extended Cyclic Prefix, in the LTE protocol) with a length of 16.6 μ s in the physical layer.
However, the length of the CP can only cancel ISI in a MA with a small area, and for ISI in a MA with a large area at a zone level or a city level, the length of the CP cannot cancel ISI, and users at the edge of the MA will have severe ISI compared to users near the center of the MA.
Disclosure of Invention
In view of the above problems, the present invention is proposed to provide a base station transmission power adjustment method and related apparatus that overcome or at least partially solve the above problems. The specific scheme is as follows:
a method of base station transmit power adjustment, the method comprising:
determining a first radius of a target area, wherein the target area is an area needing to adjust the transmitting power of a base station in a service coverage area MA of an enhanced multimedia broadcast multicast service (eMBMS), and the center of the target area is the center of the MA;
determining a second radius of a protection area of a current system Cyclic Prefix (CP);
when the first radius is larger than the second radius, dividing the target area into a plurality of sub-areas;
and respectively adjusting the transmission power of the base stations in the plurality of sub-areas.
Optionally, the determining a first radius of the target region includes:
acquiring a preset threshold value;
determining a first distance between a position of the MA, where the signal path loss PL is equal to the preset threshold value, and the center of the MA;
determining the first distance as a first radius of the target area.
Optionally, the determining a first radius of the target region further includes:
determining a second distance of an edge location of the MA from a center of the MA;
when the first distance is smaller than the second distance, determining that the first distance is a first radius of the target area;
when the first distance is greater than the second distance, determining that the second distance is the first radius of the target area.
Optionally, the dividing the target region into a plurality of sub-regions includes:
dividing the target area into N sub-areas according to the number of layers of the physical base stations contained in the target area, wherein the value of N is less than or equal to the number of layers of the physical base stations contained in the target area.
Optionally, the separately adjusting the transmission power of the base station in the plurality of sub-areas includes:
according to the formula
Adjusting transmit power of base stations in the plurality of sub-regions;
wherein, PiThe' is the adjusted transmission power of the base station in the ith sub-area, i is the sub-area index, the values from the center of the target area to the edge i are sequentially from 0 to N-1, P is the original transmission power of the base station in the MA, and Δ P is the step of the expected base station for adjusting the transmission power.
A base station transmit power adjustment apparatus comprising a processor, a memory, and a program stored on the memory and executable on the processor, the processor when executing the program implementing the steps of:
determining a first radius of a target area, wherein the target area is an area needing to adjust the transmitting power of a base station in a service coverage area MA of an enhanced multimedia broadcast multicast service (eMBMS), and the center of the target area is the center of the MA;
determining a second radius of a protection area of a current system Cyclic Prefix (CP);
when the first radius is larger than the second radius, dividing the target area into a plurality of sub-areas;
and respectively adjusting the transmission power of the base stations in the plurality of sub-areas.
Optionally, the processor is further configured to implement the following steps when executing the program:
acquiring a preset threshold value;
determining a first distance between a position of the MA, where the signal path loss PL is equal to the preset threshold value, and the center of the MA;
determining the first distance as a first radius of the target area.
Optionally, the processor is further configured to implement the following steps when executing the program:
determining a second distance of an edge location of the MA from a center of the MA;
when the first distance is smaller than the second distance, determining that the first distance is a first radius of the target area; when the first distance is greater than the second distance, determining that the second distance is the first radius of the target area.
Optionally, the processor is specifically configured to implement the following steps when executing the program:
dividing the target area into N sub-areas according to the number of layers of the physical base stations contained in the target area, wherein the value of N is less than or equal to the number of layers of the physical base stations contained in the target area.
Optionally, the processor is specifically configured to implement the following steps when executing the program:
according to the formula
Adjusting transmit power of base stations in the plurality of sub-regions;
wherein, PiThe' is the adjusted transmission power of the base station in the ith sub-area, i is the sub-area index, the values from the center of the target area to the edge i are sequentially from 0 to N-1, P is the original transmission power of the base station in the MA, and Δ P is the step of the expected base station for adjusting the transmission power.
A storage medium having stored thereon a program which, when executed by a processor, implements a base station transmission power adjustment method as described above.
A processor for executing a program, wherein the program when executed performs the base station transmit power adjustment method as described above.
By means of the technical scheme, the base station transmitting power adjusting method and the related equipment provided by the invention are based on the existing eMBMS framework design, and the system throughput rate can be improved under the conditions of not increasing the length of a CP, not reducing the spectrum efficiency and not losing the support for mobility through the whole network cooperative power control.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic diagram of a service coverage area MA of an enhanced multimedia broadcast multicast service eMBMS according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating a method for adjusting the transmission power of a base station according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a target area divided into N sub-areas according to the number of layers of physical base stations included in the target area according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a base station transmit power adjustment apparatus according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
For ISI in a MA of a larger area at district level or city level, which is counteracted by increasing the length of the CP in the prior art, two commonly used added CPs have lengths of 33 μ s and 200 μ s.
Although increasing the length of the CP can offset ISI in MA with a larger area, since the CP is a repeated redundancy of original data, if the length of the redundancy is simply increased, the proportion of valid data is reduced, thereby reducing spectral efficiency, and if higher spectral efficiency is to be ensured and the length of the CP is increased, the subcarrier spacing must be reduced, which means that the system is more sensitive to frequency offset caused by mobility.
Therefore, the invention provides a method for adjusting the transmitting power of a base station, which is based on the existing eMBMS framework design and can improve the system throughput rate without increasing the length of a CP, reducing the spectrum efficiency and losing the mobility support through the whole network cooperative power control. The details are explained in the following examples.
An MA model with a large coverage area is composed of a plurality of base stations, the shape of the overall outline of the MA is possibly various in practice due to a plurality of factors such as terrain and coverage requirements, and in order to analyze problems, the invention adopts a method similar to that of 3GPP for analyzing MA and MBSFN channels to establish a set of ideal models: a cell is centered and an approximately perfectly circular area including cells around it is used as an MA, as shown in fig. 1.
In the MBSFN mode, a plurality of base stations participating in the eMBMS service transmit synchronized broadcast multicast signals, and these electromagnetic wave signals are converged to a receiving antenna of a certain UE located in the MA after passing through different paths in space, such as propagation, reflection, refraction, and diffraction. That is, the broadcast-multicast signal received at the UE side is a multipath delay superposition of the original signal. In the invention, only the signal which has the largest difference and passes through the shortest propagation path and the longest propagation path is used as a model. The shortest propagation path signal is generally sent by a base station closest to the UE, has the largest minimum power loss and the largest contribution to the UE receiving performance, and is called a main path signal; the longest path signal is generally the signal that originates from the base station farthest from the UE and is likely to undergo multiple reflections, and is referred to as the longest path signal. Based on the above premise, assuming that the distance difference between the longest path signal and the main path signal propagation path received by the same UE is Δ D, if Δ D is within the protection range Δ D _ CP of the current system CP, the UE will not experience inter-symbol interference.
Referring to fig. 2, fig. 2 is a schematic flow chart of a method for adjusting transmit power of a base station according to an embodiment of the present invention, where an execution subject of the method is a superior device of the base station, such as but not limited to a network management system, and the method includes the following steps:
step S101: a first radius of the target area is determined.
The target area is an area which needs to adjust the transmitting power of a base station in a service coverage area MA of an enhanced multimedia broadcast multicast service (eMBMS), and the circle center of the target area is the center of the MA;
in one embodiment, the determining the first radius of the target region comprises:
acquiring a preset threshold value;
determining a first distance between a position of the MA, where the signal path loss PL is equal to the preset threshold value, and the center of the MA;
determining the first distance as a first radius (r) of the target area.
In an example, if the preset threshold value Thres is taken as 110dB, a first distance R from the center of the MA to the signal path loss PL Thres is found, and R is taken as a radius of an area where transmission power adjustment needs to be performed, and a circular area corresponding to the radius is the target area R.
In yet another possible implementation, the determining a first radius of the target region includes:
acquiring a preset threshold value;
determining a first distance between a position of the MA, where the signal path loss PL is equal to the preset threshold value, and the center of the MA;
determining a second distance of an edge location of the MA from a center of the MA; the edge position of the MA is the coverage edge position of the base station at the outermost edge of the MA.
When the first distance is smaller than the second distance, determining that the first distance is a first radius of the target area;
when the first distance is greater than the second distance, determining that the second distance is the first radius of the target area.
That is, when the range of MA is smaller than the calculated range of R, a smaller value is taken as R, i.e., R ═ min (R, MA). Then, if the range of the power finally needs to be adjusted is based on the range calculated based on the path loss, the radius is the distance r from the MA center where the signal path loss PL is Thres; the final value of r is a second distance of the edge position of the MA from the center of the MA if the range of power that ultimately needs to be adjusted is based on the range of MA.
In the embodiment of the present invention, Thres is selected to be large enough to ensure that the interference strength of signals other than R to the UE in the MA center cell is negligible. The signal path loss PL may be calculated based on, but not limited to, using a path loss model such as Okumura-Hata or COST231 Hata, or may be obtained using field measurements.
Step S102: determining a second radius of a protection area of a current system Cyclic Prefix (CP);
the current system cyclic prefix CP is a CP with a length of 16.6 μ s. The protection area of the current system cyclic prefix CP is fixed, from which a second radius of the protection area of the current system cyclic prefix CP can be determined.
Step S103: when the first radius is larger than the second radius, dividing the target area into a plurality of sub-areas;
the target area defines a range capable of influencing the central cell, and whether the maximum road path difference max delta D in the target area exceeds the protection range delta D _ CP of the current system CP needs to be judged in the invention. In the present invention, the longest path difference max Δ D that may occur in the target area is approximately equal to the first radius of the target area, although this approximate error is large, but is equivalent to reserving more protection margin, because the first radius is actually the path difference between the main path of the far-end cell and the main path of the near-end cell, and this value is certainly smaller than the difference between the longest delay path DelayPath2 of the far-end cell and the main path of the near-end cell MainPath1, so if the first radius exceeds Δ D _ CP, the longest path difference also must exceed Δ D _ CP.
Therefore, in the present invention, whether partitioning is needed is determined according to the relationship between the second radius of the Δ D _ CP and the first radius, if the first radius is greater than the second radius, it indicates that the current system CP cannot protect the maximum path difference, and partitioning is needed, and if the first radius is less than or equal to the second radius, it indicates that the current system CP can protect the maximum path difference, and partitioning is not needed.
In an implementation manner, the target area is divided into N sub-areas according to the number of layers of physical base stations included in the target area, and the value of N is smaller than or equal to the number of layers of physical base stations included in the target area. As shown in fig. 3.
Step S104: and respectively adjusting the transmission power of the base stations in the plurality of sub-areas.
In one possible embodiment, the formula is based on
Adjusting transmit power of base stations in the plurality of sub-regions;
wherein, PiThe' is the adjusted transmission power of the base station in the ith sub-area, i is the sub-area index, the values from the center of the target area to the edge i are sequentially from 0 to N-1, P is the original transmission power of the base station in the MA, and Δ P is the step of the expected base station for adjusting the transmission power.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a base station transmit power adjustment apparatus according to an embodiment of the present invention, the apparatus includes:
a first determining unit 51, configured to determine a first radius of a target area, where the target area is an area in a service coverage area MA of an enhanced multimedia broadcast multicast service eMBMS, where base station transmit power needs to be adjusted, and a circle center of the target area is a center of the MA;
a second determining unit 52, configured to determine a second radius of the protection area of the current system cyclic prefix CP;
a partitioning unit 53, configured to partition the target area into a plurality of sub-areas when the first radius is larger than the second radius;
and a transmission power adjusting unit 54, configured to adjust the transmission power of the base station in the multiple sub-areas, respectively.
Optionally, the first determining unit includes:
the acquisition subunit is used for acquiring a preset threshold value;
a first distance determining subunit, configured to determine a first distance between a center of the MA and a position where a signal path loss PL in the MA is equal to the preset threshold value;
a first radius determining subunit, configured to determine that the first distance is a first radius of the target region.
Optionally, the first determining unit further includes:
a second distance determining subunit for determining a second distance of an edge position of the MA from a center of the MA;
the first radius determining subunit is specifically configured to determine, when the first distance is smaller than the second distance, that the first distance is a first radius of the target area; when the first distance is greater than the second distance, determining that the second distance is the first radius of the target area.
Optionally, the partition unit is specifically configured to:
dividing the target area into N sub-areas according to the number of layers of the physical base stations contained in the target area, wherein the value of N is less than or equal to the number of layers of the physical base stations contained in the target area.
Optionally, the transmission power adjusting unit is specifically configured to:
according to the formula
Adjusting transmit power of base stations in the plurality of sub-regions;
wherein, PiThe' is the adjusted transmission power of the base station in the ith sub-area, i is the sub-area index, the values from the center of the target area to the edge i are sequentially from 0 to N-1, P is the original transmission power of the base station in the MA, and Δ P is the step of the expected base station for adjusting the transmission power.
It should be noted that specific function implementation of each unit is already described in detail in the method embodiment, and this embodiment is not described again.
The base station transmitting power adjusting device comprises a processor and a memory, wherein the units are stored in the memory, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. One or more than one kernel can be set, the kernel parameters are adjusted to be based on the existing eMBMS framework design, and the system throughput rate can be improved under the conditions of not increasing the length of the CP, not reducing the spectrum efficiency and not losing the mobility support through the whole network cooperative power control.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
An embodiment of the present invention provides a storage medium having a program stored thereon, where the program is executed by a processor to implement the method for adjusting the transmission power of a base station.
The embodiment of the invention provides a processor, which is used for running a program, wherein the program is used for executing the base station transmitting power adjusting method during running.
The embodiment of the invention provides a base station transmitting power adjusting device, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein the processor executes the program and realizes the following steps:
determining a first radius of a target area, wherein the target area is an area needing to adjust the transmitting power of a base station in a service coverage area MA of an enhanced multimedia broadcast multicast service (eMBMS), and the center of the target area is the center of the MA;
determining a second radius of a protection area of a current system Cyclic Prefix (CP);
when the first radius is larger than the second radius, dividing the target area into a plurality of sub-areas;
and respectively adjusting the transmission power of the base stations in the plurality of sub-areas.
Optionally, the processor is further configured to implement the following steps when executing the program:
acquiring a preset threshold value;
determining a first distance between a position of the MA, where the signal path loss PL is equal to the preset threshold value, and the center of the MA;
determining the first distance as a first radius of the target area.
Optionally, the processor is further configured to implement the following steps when executing the program:
determining a second distance of an edge location of the MA from a center of the MA;
when the first distance is smaller than the second distance, determining that the first distance is a first radius of the target area; when the first distance is greater than the second distance, determining that the second distance is the first radius of the target area.
Optionally, the processor is specifically configured to implement the following steps when executing the program:
dividing the target area into N sub-areas according to the number of layers of the physical base stations contained in the target area, wherein the value of N is less than or equal to the number of layers of the physical base stations contained in the target area.
Optionally, the processor is specifically configured to implement the following steps when executing the program:
according to the formula
Adjusting transmit power of base stations in the plurality of sub-regions;
wherein, PiThe' is the adjusted transmission power of the base station in the ith sub-area, i is the sub-area index, the values from the center of the target area to the edge i are sequentially from 0 to N-1, P is the original transmission power of the base station in the MA, and Δ P is the step of the expected base station for adjusting the transmission power.
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). The 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 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.
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 above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur 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 (10)
1. A method for adjusting transmission power of a base station, the method comprising:
determining a first radius of a target area, wherein the target area is an area needing to adjust the transmitting power of a base station in a service coverage area MA of an enhanced multimedia broadcast multicast service (eMBMS), and the center of the target area is the center of the MA;
determining a second radius of a protection area of a current system Cyclic Prefix (CP);
when the first radius is greater than the second radius, dividing the target region into a plurality of sub-regions, including: dividing the target area into N sub-areas according to the number of layers of physical base stations contained in the target area, wherein the value of N is less than or equal to the number of layers of physical base stations contained in the target area;
and respectively adjusting the transmission power of the base stations in the plurality of sub-areas.
2. The method of claim 1, wherein determining the first radius of the target region comprises:
acquiring a preset threshold value;
determining a first distance between a position of the MA, where the signal path loss PL is equal to the preset threshold value, and the center of the MA;
determining the first distance as a first radius of the target area.
3. The method of claim 2, wherein the determining a first radius of the target region further comprises:
determining a second distance of an edge location of the MA from a center of the MA;
when the first distance is smaller than the second distance, determining that the first distance is a first radius of the target area;
when the first distance is greater than the second distance, determining that the second distance is the first radius of the target area.
4. The method of claim 1, wherein the separately adjusting the transmission power of the base stations in the plurality of sub-regions comprises:
according to the formula
Adjusting transmit power of base stations in the plurality of sub-regions;
wherein, PiThe' is the adjusted transmission power of the base station in the ith sub-area, i is the sub-area index, the values from the center of the target area to the edge i are sequentially from 0 to N-1, P is the original transmission power of the base station in the MA, and Δ P is the step of the expected base station for adjusting the transmission power.
5. A base station transmit power adjustment apparatus, comprising a processor, a memory, and a program stored on the memory and operable on the processor, the processor when executing the program implementing the steps of:
determining a first radius of a target area, wherein the target area is an area needing to adjust the transmitting power of a base station in a service coverage area MA of an enhanced multimedia broadcast multicast service (eMBMS), and the center of the target area is the center of the MA;
determining a second radius of a protection area of a current system Cyclic Prefix (CP);
when the first radius is greater than the second radius, dividing the target region into a plurality of sub-regions, including: dividing the target area into N sub-areas according to the number of layers of physical base stations contained in the target area, wherein the value of N is less than or equal to the number of layers of physical base stations contained in the target area;
and respectively adjusting the transmission power of the base stations in the plurality of sub-areas.
6. The apparatus of claim 5, wherein the processor when executing the program is further configured to perform the steps of:
acquiring a preset threshold value;
determining a first distance between a position of the MA, where the signal path loss PL is equal to the preset threshold value, and the center of the MA;
determining the first distance as a first radius of the target area.
7. The apparatus of claim 6, wherein the processor when executing the program is further configured to perform the steps of:
determining a second distance of an edge location of the MA from a center of the MA;
when the first distance is smaller than the second distance, determining that the first distance is a first radius of the target area; when the first distance is greater than the second distance, determining that the second distance is the first radius of the target area.
8. The device of claim 5, wherein the processor when executing the program is further configured to perform the steps of:
according to the formula
Adjusting transmit power of base stations in the plurality of sub-regions;
wherein, Pi' is the adjusted emission power of the base station in the ith sub-area, i is the sub-area index, the values from the center of the target area to the edge i are 0 to N-1 in sequence, and P isThe original transmit power of the base station in the MA, Δ p, is the step by which the desired base station adjusts the transmit power.
9. A storage medium having stored thereon a program which, when executed by a processor, implements the base station transmission power adjustment method according to any one of claims 1 to 4.
10. A processor for executing a program, wherein the program when executed performs the base station transmit power adjustment method of any of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910208531.2A CN109982249B (en) | 2019-03-19 | 2019-03-19 | Base station transmitting power adjusting method and related equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910208531.2A CN109982249B (en) | 2019-03-19 | 2019-03-19 | Base station transmitting power adjusting method and related equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109982249A CN109982249A (en) | 2019-07-05 |
| CN109982249B true CN109982249B (en) | 2021-01-19 |
Family
ID=67079544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910208531.2A Active CN109982249B (en) | 2019-03-19 | 2019-03-19 | Base station transmitting power adjusting method and related equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109982249B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5056109A (en) * | 1989-11-07 | 1991-10-08 | Qualcomm, Inc. | Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system |
| JP2993554B2 (en) * | 1994-05-12 | 1999-12-20 | エヌ・ティ・ティ移動通信網株式会社 | Transmission power control method and communication device using the transmission power control method |
| CN1870468A (en) * | 2005-11-30 | 2006-11-29 | 华为技术有限公司 | Method for implementing group broadcasting service of multi-media broadcast |
| US9332510B2 (en) * | 2010-08-17 | 2016-05-03 | Qualcomm Incorporated | Apparatus and method for controlling inter-cell interference between femtocells and macrocells |
| CN103118334A (en) * | 2011-11-17 | 2013-05-22 | 中兴通讯股份有限公司 | Digital trunked system down data sending method and device based on enhanced multimedia broadcast multicast service (eMBMS) |
| US9980272B2 (en) * | 2015-09-29 | 2018-05-22 | Verizon Patent And Licensing Inc. | Mitigating interference to eMBMS services in HetNet deployments |
-
2019
- 2019-03-19 CN CN201910208531.2A patent/CN109982249B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109982249A (en) | 2019-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8611940B2 (en) | Methods and apparatus for enabling a channel access protocol for directional MAC | |
| US8346173B2 (en) | Apparatus and methods for intercell interference cancellation via RNTI | |
| US8385302B2 (en) | Methods and apparatus for enabling distributed beacon transmissions | |
| US9204425B2 (en) | Transmission frame and resource allocation method for communication system including base stations | |
| EP2502458B1 (en) | Methods and apparatus for providing listening periods in directional communications networks | |
| CN103444238A (en) | Managing transmit power for better frequency re-use in tv white space | |
| CN103444254A (en) | Managing transmission power and modulation and coding scheme selection during random access in TV white space | |
| Wang et al. | Interference coordination for millimeter wave communications in 5G networks for performance optimization | |
| US20210022007A1 (en) | Criteria Based Method for Cell Channel Allocation Based on Authorization from an External System | |
| WO2014056197A1 (en) | Method, apparatus and base station for improving user capacity in physical sector | |
| US20130265901A1 (en) | Coordinating Communications in radio Service Areas | |
| WO2021073329A1 (en) | Method for suppressing cell co-channel interference, and base station and system | |
| EP2536223A1 (en) | A method for scheduling users in a cellular environment for applying Pareto optimal power control, scheduler and wireless communication network | |
| CN112468204B (en) | Resource allocation method, device, storage medium and satellite communication system | |
| US20180343103A1 (en) | Apparatus and method for managing interference in wireless communication system | |
| CN102711258B (en) | Method and device for avoiding inter-cell interference | |
| CN109982249B (en) | Base station transmitting power adjusting method and related equipment | |
| CN111386658B (en) | Unmanned aerial vehicle and power control method thereof | |
| CN103369653A (en) | A user equipment uplink power control method and a network device in a heterogeneous network | |
| WO2015199846A1 (en) | Method and apparatus for protecting radars from interference | |
| WO2020186445A1 (en) | Method for adjusting transmit power of base station, and related device | |
| Zhai et al. | Cognitive spectrum access with energy harvesting primary user and best secondary user selection | |
| WO2023240517A1 (en) | Predictive beam management for cell group setup | |
| CN111356245B (en) | Initial access method and system for asymmetric uplink carrier aggregation | |
| US10091797B2 (en) | Differentiated adaptation of selection probabilities for frequency channel selection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |