CN115623572A - Uplink interference processing method and device - Google Patents

Uplink interference processing method and device Download PDF

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Publication number
CN115623572A
CN115623572A CN202110801665.2A CN202110801665A CN115623572A CN 115623572 A CN115623572 A CN 115623572A CN 202110801665 A CN202110801665 A CN 202110801665A CN 115623572 A CN115623572 A CN 115623572A
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value
cell
rsrp
terminal
target cell
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Inventor
陈致樑
覃冠杰
罗伟民
熊国新
赖建军
聂磊
张建辉
潘平
黄炎强
郑欣哲
茹刚
张伟杰
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ZTE Corp
China Mobile Communications Group Co Ltd
China Mobile Group Guangdong Co Ltd
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ZTE Corp
China Mobile Communications Group Co Ltd
China Mobile Group Guangdong Co Ltd
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Priority to CN202110801665.2A priority Critical patent/CN115623572A/en
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    • 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
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • 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
    • 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
    • H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • 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
    • H04W52/245—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account received signal strength
    • 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
    • H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure

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

Abstract

The invention provides an uplink interference processing method and device. The method comprises the following steps: screening out a boundary terminal of a target cell under the condition of meeting a triggering condition; determining a target cell Reference Signal Received Power (RSRP) value according to the boundary terminal, and constructing an evaluation set according to the target cell RSRP value and the adjacent cell RSRP value; determining the access value degree of each cell in the evaluation set and the maximum access value degree in the access value degrees of each cell; and sending a command for reducing the transmission power to the boundary terminal under the condition that the difference between the maximum access value and the access value of the target cell is smaller than a value threshold. The uplink interference processing method and the uplink interference processing device provided by the invention can effectively reduce the uplink interference of the indoor station under the condition of not enhancing the coverage level of the cell.

Description

Uplink interference processing method and device
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for processing uplink interference.
Background
Under the current same-frequency networking, the transmitting power of an indoor cell is lower than that of a macro cell. Thus when terminals at the indoor and outdoor edges occupy outdoor cells, their path loss to the macro station is generally higher than its path loss to the indoor outstations. Therefore, the terminal increases the uplink transmission power, but is closer to the indoor substation in geographic location, so that when the terminal performs uplink information interaction with the macro station, strong uplink interference to the indoor substation is inevitably generated, which may cause performance degradation of the indoor cell and further deteriorate network perception of the terminal in the edge coverage area of the indoor substation.
At present, the problem of indoor and outdoor co-frequency networking interference is solved by mainly improving the coverage level of an indoor cell, for example, increasing the point position covered by the indoor cell through covering, improving the field intensity level of a coverage area and resisting outdoor macro station interference. According to the scheme, more indoor antennas and information source equipment are required to be added, network investment is increased, meanwhile, the risk of signal leakage is increased more easily, and user perception in an outdoor area is influenced.
Therefore, how to reduce the uplink interference of the indoor cell edge terminal to the indoor substation under the condition of not enhancing the indoor cell coverage level has very important significance.
Disclosure of Invention
The present invention provides a method and an apparatus for processing uplink interference, which are used to overcome the above-mentioned defects in the prior art.
In a first aspect, the present invention provides an uplink interference processing method, including:
screening out a boundary terminal of a target cell under the condition of meeting a triggering condition;
determining a target cell Reference Signal Received Power (RSRP) value according to the boundary terminal, and constructing an evaluation set according to the target cell RSRP value and an adjacent cell RSRP value;
determining the access value degree of each cell in the evaluation set and the maximum access value degree in the access value degrees of each cell;
and sending a command for reducing the transmission power to the boundary terminal under the condition that the difference between the maximum access value and the access value of the target cell is smaller than a value threshold.
In one embodiment, the screening out the boundary terminal of the target cell includes:
determining a terminal meeting the preset conditions in the target cell as the boundary terminal:
and the absolute value of the difference between the target cell RSRP value measured by the terminal and the adjacent cell RSRP value closest to the target cell RSRP value measured by the terminal is less than an absolute value threshold.
In an embodiment, the determining, according to the border terminal, a target cell RSRP value, and constructing an evaluation set according to the target cell RSRP value and an adjacent cell RSRP value includes:
taking the average value of the RSRP values measured by all the boundary terminals as the RSRP value of the target cell;
sequencing the RSRP values of the target cell and the RSRP values of the adjacent cells from large to small;
constructing the evaluation set according to the cells corresponding to the RSRP values of the preset number;
wherein the evaluation set includes the target cell.
In one embodiment, the determining the access value degree of each cell in the evaluation set comprises:
and for any cell in the evaluation set, determining the access value degree of the cell according to the boundary terminal RSRP level mean value of the cell, the boundary terminal signal-to-noise ratio SINR mean value of the cell, the boundary terminal timing advance TA mean value of the cell, the uplink interference value of the cell and the PRB utilization rate of the cell.
In one embodiment, the method further comprises:
under the condition that the difference between the maximum access value degree and the access value degree of the target cell is greater than or equal to a value degree threshold value, switching the boundary terminal to the cell corresponding to the maximum access value degree;
and sending the instruction for reducing the transmitting power to the boundary terminal.
In one embodiment, the sending the instruction to reduce the transmission power to the border terminal includes:
determining a strong interference neighbor cell set according to the uplink interference level value of each neighbor cell;
determining an interference contribution value of the boundary terminal to the neighbor cells according to the transmitting power of the boundary terminal, the RB request number of the boundary terminal, the interference level value of each neighbor cell in the interference neighbor cell set, the transmitting power of each neighbor cell in the interference neighbor cell set and the RSRP value of each neighbor cell in the interference neighbor cell set received by the boundary terminal;
and sending a transmission power reduction instruction to the boundary terminal when the interference contribution value is greater than or equal to an interference contribution value threshold value.
In one embodiment, the method further comprises:
under the condition that the boundary terminal initiates an uplink request, configuring target RB resources for the boundary terminal;
and the interference level value of the target RB resource is smaller than the corresponding interference level threshold value.
In a second aspect, the present invention provides an uplink interference processing apparatus, including:
the terminal screening module is used for screening out the boundary terminal of the target cell under the condition that the triggering condition is met;
the set construction module is used for determining a Reference Signal Received Power (RSRP) value of a target cell according to the boundary terminal and constructing an evaluation set according to the RSRP value of the target cell and the RSRP value of an adjacent cell;
the value degree determining module is used for determining the access value degree of each cell in the evaluation set and the maximum access value degree in the access value degrees of each cell;
and the instruction sending module is used for sending an instruction for reducing the transmission power to the boundary terminal under the condition that the difference between the maximum access value degree and the access value degree of the target cell is smaller than a value degree threshold value.
In a third aspect, the present invention provides an electronic device, including a processor and a memory storing a computer program, where the processor implements the steps of the uplink interference processing method in the first aspect when executing the computer program.
In a fourth aspect, the present invention provides a processor-readable storage medium, which stores a computer program for causing a processor to execute the steps of the uplink interference processing method according to the first aspect.
According to the uplink interference processing method and device provided by the invention, whether the boundary terminal can cause uplink interference of the indoor station can be accurately determined by screening the boundary terminal of the target cell, and by establishing an evaluation set, determining the cell access value degree, comparing the access value degree and other processes. And the transmitting power is reduced by sending a command of reducing the transmitting power to the terminal causing the indoor station uplink interference, so that the indoor station uplink interference can be effectively reduced under the condition of not enhancing the cell coverage level.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic flowchart of an uplink interference processing method provided in the present invention;
fig. 2 is a schematic structural diagram of an uplink interference processing apparatus provided in the present invention;
fig. 3 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.
Fig. 1 is a flowchart illustrating an uplink interference processing method provided in the present invention. Referring to fig. 1, the present invention provides an uplink interference processing method, which may include:
110, screening out a boundary terminal of a target cell under the condition of meeting a trigger condition;
step 120, determining a target cell RSRP value according to the boundary terminal, and constructing an evaluation set according to the target cell RSRP value and the neighbor cell RSRP value;
step 130, determining the access value degree of each cell in the evaluation set and the maximum access value degree in the access value degrees of each cell;
and 140, sending a transmission power reduction instruction to the boundary terminal under the condition that the difference between the maximum access value degree and the access value degree of the target cell is smaller than a value degree threshold value.
It should be noted that the execution main body of the uplink interference processing method provided by the present invention may be a network side device, for example, a base station.
Before the network side device performs step 110, the network side device performs step 100:
counting uplink interference level I through background network management S ；
Measuring the reported information and the scheduling request information by the terminal, and acquiring a neighbor list, a TA (Timing Advance) value, a RSRP (Reference Signal Receiving Power) value, an SINR (Signal to Interference plus Noise Ratio, signal to Interference plus Noise Ratio for short) value, a switching offset value and the number of uplink RB (Resource Block) requirements of the target cell and the neighbor cell;
information such as PRB (Physical Resource Block) utilization rate, interference level distribution of each RB, transmission power and the like of the adjacent cell is obtained through information interaction between network side devices.
In step 110, the network side device first determines whether a trigger condition is currently satisfied. If not, the network side device will execute step 100 again; if so, the network side device screens out the boundary terminal of the target cell according to the uplink interference level of the target cell determined in step 100 and the physical resource block PRB utilization rate of the neighboring cell.
The target cell may specifically be, for example, an indoor cell under indoor and outdoor co-frequency networking.
The border terminal may be specifically a terminal closer to the outdoor cell in the target cell under, for example, indoor and outdoor co-frequency networking, that is, the border terminal is a terminal located at or close to a junction between the indoor cell and the outdoor cell.
It should be noted that the application scenario of the uplink interference processing method provided by the present invention is not limited to this, and in different application scenarios, the specific types corresponding to the target cells may be different, and the specific definitions corresponding to the boundary terminals may also be different, which is not specifically limited in the present invention.
In step 120, the network side device determines an RSRP value of the target cell according to the border terminal, and constructs an evaluation set according to the RSRP value of the target cell and the RSRP value of the neighboring cell.
For example, the network side device may rank according to the RSRP value, and determine each cell in the evaluation set according to the ranking result.
In step 130, the network side device may determine, according to the determined evaluation set, access value degrees of each cell therein, and determine a maximum value among the access value degrees.
In step 140, the network side device may compare the maximum access value with the access value of the target cell, and determine to send a transmit power reduction instruction to the boundary terminal of the target cell when determining that the difference between the maximum access value and the access value of the target cell is smaller than the value threshold, so that each boundary terminal uses a smaller transmit power.
According to the uplink interference processing method provided by the invention, whether the boundary terminal can cause uplink interference of the indoor station can be accurately determined by screening the boundary terminal of the target cell, and by establishing an evaluation set, determining the cell access value degree, comparing the access value degree and other processes. And the transmitting power is reduced by sending a command of reducing the transmitting power to the terminal causing the uplink interference of the indoor station, so that the uplink interference of the indoor station can be effectively reduced under the condition of not enhancing the coverage level of the cell.
In one embodiment, the trigger condition may include:
in a preset time period, the uplink interference level of the target cell is greater than or equal to the interference level threshold, and the uplink interference level of the target cell is positively correlated with the PRB utilization rate of the adjacent cell.
The trigger condition may be formulated as follows:
Figure RE-GDA0003408468970000071
wherein, I s Is the uplink interference level of the target cell; i is L Is an interference level threshold; delta I s The uplink interference level variation of the target cell in time t is obtained; delta sigma PR n The variable quantity of the PRB utilization rate of the physical resource block of the adjacent cell in the time t is obtained; t is L Is a preset time period.
I L The specific size of the present invention may be adjusted according to actual conditions, and the present invention is not limited to this.
It can be understood that, by determining the trigger condition, it can be determined whether the current target cell is affected by the uplink interference, so as to determine whether to execute steps 110 to 140 to reduce the uplink interference caused by the border terminal.
In one embodiment, screening out the boundary terminal of the target cell may include:
determining a terminal meeting the preset conditions in the target cell as a boundary terminal:
and the absolute value of the difference between the target cell RSRP value measured by the terminal and the adjacent cell RSRP value closest to the target cell RSRP value measured by the terminal is smaller than the absolute value threshold.
The screening conditions can be formulated as follows:
|R S -R NE |＜L R (2)
wherein R is S A target cell RSRP value measured for the terminal; r NE The RSRP value of the adjacent cell closest to the RSRP value of the target cell measured by the terminal; l is R Is an absolute value threshold.
Wherein L is R The specific size of the lens can be adjusted according to the actual situation, and the invention is not limited to this。
It can be understood that, when the terminal in the target cell satisfies the above-mentioned screening condition, it indicates that the uplink interference of the terminal to the target cell is large. Therefore, the boundary terminal with large uplink interference to the target cell can be accurately determined through the screening condition.
In one embodiment, step 120 may comprise:
taking the average value of the RSRP values measured by each boundary terminal as the RSRP value of the target cell;
sequencing the RSRP value of the target cell and the RSRP value of each adjacent cell from large to small;
constructing an evaluation set according to the cells corresponding to the RSRP values of the preset number;
wherein the evaluation set comprises the target cell.
It should be noted that the RSRP value of each neighboring cell may also be an average value of RSRP values measured by all terminals in the cell, or an average value of RSRP values measured by some terminals in the cell, which is not specifically limited in the present invention.
After the average value of the RSRP values measured by each border terminal is used as the RSRP value of the target cell, the RSRP values of the target cell and the neighboring cells may be sorted from large to small, and the n cells with the maximum RSRP value and the preset number are extracted as the evaluation set J 0 ＝{C 1 ,C 2 ,……, C n }. The evaluation set J 0 Which needs to include the target cell.
The specific size of n may be adjusted according to actual needs, and the present invention is not particularly limited.
In one embodiment, determining the access value of each cell in the evaluation set may include:
and for any cell in the evaluation set, determining the access value degree of the cell according to the RSRP level mean value of the cell, the SINR mean value of the cell, the TA mean value of the cell, the uplink interference value of the cell and the PRB utilization rate of the cell.
The access value degree can be formulated as follows:
Figure RE-GDA0003408468970000081
wherein R is m The mean value of the RSRP level of the boundary terminal of the mth cell is obtained; s m Representing the mean value of the SINR of the boundary terminal of the mth cell; t is m Representing the TA mean value of the boundary terminal of the mth cell; i is m Representing an uplink interference value of the mth cell; PR m Representing the PRB utilization rate of the mth cell; a. b, c, d and e are weight coefficients and take positive values.
After determining the access value degrees of the cells in the evaluation set, the maximum access value degree in the access value degrees of the cells can be determined and set as V A Corresponding cell is C A 。
The access value degree may represent a reasonable degree of access of the terminal to the cell. The larger the access value degree is, the smaller the tendency of generating uplink interference on the adjacent cell after the terminal accesses the cell is shown; the smaller the access value degree is, the greater the tendency of the terminal to generate uplink interference to the neighboring cell after accessing the cell is indicated.
Before sending the instruction of reducing the transmission power to the boundary terminal, the network side equipment judges whether the difference between the maximum access value degree and the access value degree of the target cell is smaller than a value degree threshold value.
Set target cell C s Has an access value degree of V s If the network side equipment determines V A -V S < V L Then the network side device sends a command to reduce the transmission power to the border terminal.
According to the uplink interference processing method provided by the invention, the cells are screened according to the RSRP value of the cell to construct the evaluation set, the access value degree of each cell in the evaluation set is determined, and whether the transmitting power of the boundary terminal is reduced or not is determined according to the access value degree, so that the reduction of uplink interference can be realized under the most reasonable condition (the tendency of generating uplink interference on other cells is small), and the accuracy and the efficiency of reducing the uplink interference are improved.
In an embodiment, the uplink interference processing method provided by the present invention may further include:
under the condition that the difference between the maximum access value degree and the access value degree of the target cell is greater than or equal to the value degree threshold value, switching the boundary terminal to the cell corresponding to the maximum access value degree;
and sending a command of reducing the transmission power to the boundary terminal.
If the network side equipment determines V A -V S ≥V L Then the network side device will first switch the border terminal to cell C A And switching the boundary terminal to the cell C A And sending a command for reducing the transmitting power to the boundary terminal.
Wherein the boundary terminal is switched to C A The step 150 of the cell may comprise:
step 1501, checking whether an alarm influencing the switching and access of the network side equipment exists, and if so, removing the fault.
Step 1502, inspection condition 1: r is a ≥R La Wherein R is a C measured for boundary terminal A RSRP average of (d); r La Is C A The minimum access level of. If not, adjusting R La Until condition 1 is satisfied.
Step 1503, checking condition 2: r a +of a +oc a -hys＞Rs+of s +oc s + off, of a Is cell C A The frequency offset of (1); oc and C a Is cell C A The neighbor cell bias of (1); hys is a hysteresis value; r is S C measured for boundary terminal s RSRP mean of (d); of s Is cell C s The frequency offset of (1); oc s Is cell C s The neighbor cell bias of (1); off is the offset value. If not, adjusting oc a 、oc s Until condition 2 is satisfied.
The uplink interference processing method provided by the invention can ensure that the uplink interference is reduced under the most reasonable condition (the tendency of generating uplink interference on other cells is small) by switching the boundary terminal to the cell with higher access value degree and then sending the instruction for reducing the transmitting power to the boundary terminal under the condition that the access value degree of the cell is lower, thereby further improving the accuracy and the efficiency of reducing the uplink interference.
In one embodiment, sending the instruction to reduce the transmission power to the border terminal may include:
determining a strong interference neighbor cell set according to the uplink interference level value of each neighbor cell;
determining an interference contribution value of the boundary terminal to the neighbor cells according to the transmitting power of the boundary terminal, the RB request number of the boundary terminal, the interference level value of each neighbor cell in the interference neighbor cell set, the transmitting power of each neighbor cell in the interference neighbor cell set and the RSRP value of each neighbor cell in the interference neighbor cell set received by the boundary terminal;
and sending a command of reducing the transmission power to the boundary terminal under the condition that the interference contribution value is greater than or equal to the threshold value of the interference contribution value.
For example, the uplink interference level value of the neighboring cell, such as reaching the threshold I, may be obtained through information interaction between network side devices L Then bring into the neighboring cell set J with strong interference I Namely: j. the design is a square I ＝{C m ∈J 0 |I m ≥I L And recording the number of cells in the set as N int 。
For each boundary terminal, the interference contribution value C of the boundary terminal to the adjacent cell can be calculated according to the transmission power of the boundary terminal, the traffic of the boundary terminal, the interference level of the adjacent cell, the path loss factor and the like I 。
C I The calculation of (d) can be formulated as follows:
Figure RE-GDA0003408468970000101
wherein, P J Is the transmit power of the jth border terminal; RB (radio B) J The RB request number of the resource block of the J-th boundary terminal; i is K The interference level value of the Kth adjacent cell in the interference adjacent cell set is obtained; p is K The transmitting power of the Kth adjacent cell in the interference adjacent cell set is obtained; r j,k Interference received for the jth border terminalThe RSRP value of the Kth neighbor cell in the neighbor cell set; f. g, h and i are weight coefficients and take positive values.
Setting the interference contribution value threshold value as CI lim At the jth boundary terminal, the condition is satisfied: CI J ≥ CI lim Under the condition, the network side equipment judges that the J-th boundary terminal is a strong interference terminal, and sends a transmission power reduction instruction to the J-th boundary terminal until the J-th boundary terminal meets the condition CI J ＜CI lim 。
The size of the interference contribution value threshold may be adjusted according to an actual situation, which is not specifically limited in the present invention.
The uplink interference processing method provided by the invention can ensure that the uplink interference is reduced when the uplink interference of the boundary terminal to the target cell is larger by determining the interference contribution value of the boundary terminal and sending the instruction for reducing the transmitting power to the boundary terminal under the condition that the interference contribution value is greater than or equal to the threshold of the interference contribution value, thereby improving the accuracy and efficiency for reducing the uplink interference.
In an embodiment, the uplink interference processing method provided by the present invention may further include:
under the condition that the boundary terminal initiates an uplink request, configuring target RB resources for the boundary terminal;
and the interference level value of the target RB resource is smaller than the corresponding interference level threshold value.
For example, a plurality of interference level threshold values may be set: v 1 <V 2 <…<V n And counting the interference level NI distribution of each RB of the target cell through a network side device background, dividing RB sections of which each RB is lower than the threshold value of the interference level, and sequencing the RB sections according to the interference level mean value in the sections. Thereby limiting the value V for each interference level m (m is more than or equal to 1 and less than or equal to n), generating 1 3-element vector matrix:
Figure RE-GDA0003408468970000111
wherein S is i,j Indicating that each RB is below the interference level threshold V j The starting RB sequence number of the ith RB segment of (1); l is i,j Is the corresponding RB segment length; i is i,j Is the average value of the interference level of the corresponding RB section. And the ternary vectors in each matrix are sorted from small to large according to the average value of the interference levels of the RB sections.
Obtaining RB resource request number N of users through uplink scheduling request information RB From the matrix MV 1 Matching is started, and the 1 st 3-element vector in each matrix is matched. When matching to L of a certain vector i,j ≥N RB Then will be S i,j Is a starting sequence number and a length of N RB Is allocated to the terminal.
Finally, the 3-element vector matrix is updated according to the latest interference level NI distribution.
The uplink interference processing method provided by the invention can further reduce the uplink interference of the boundary terminal to the target cell and improve the efficiency of reducing the uplink interference by configuring the RB resource with a smaller interference level value for the boundary terminal.
The uplink interference processing apparatus provided in the present invention is described below, and the uplink interference processing apparatus described below and the uplink interference processing method described above may be referred to correspondingly.
Fig. 2 is a schematic structural diagram of an uplink interference processing apparatus provided in the present invention. Referring to fig. 2, the present invention further provides an uplink interference processing apparatus, which may include:
a terminal screening module 210, configured to screen out a boundary terminal of a target cell when a trigger condition is met;
a set constructing module 220, configured to determine a target cell reference signal received power RSRP value according to the border terminal, and construct an evaluation set according to the target cell RSRP value and an adjacent cell RSRP value;
a value degree determining module 230, configured to determine the access value degree of each cell in the evaluation set, and the maximum access value degree in the access value degrees of each cell;
an instruction sending module 240, configured to send an instruction to reduce a transmission power to the border terminal when a difference between the maximum access value and the access value of the target cell is smaller than a value threshold.
The uplink interference processing device provided by the invention can accurately determine whether the boundary terminal can cause uplink interference of the indoor station or not by screening the boundary terminal of the target cell and establishing an evaluation set, determining the cell access value degree, comparing the access value degree and other processes. And the transmitting power is reduced by sending a command of reducing the transmitting power to the terminal causing the uplink interference of the indoor station, so that the uplink interference of the indoor station can be effectively reduced under the condition of not enhancing the coverage level of the cell.
In one embodiment, the trigger condition includes:
in a preset time period, the uplink interference level of the target cell is greater than or equal to an interference level threshold, and the uplink interference level of the target cell is positively correlated with the PRB utilization rate of the physical resource blocks of the adjacent cells.
In an embodiment, the terminal screening module 210 is specifically configured to:
determining a terminal meeting the preset conditions in the target cell as the boundary terminal:
and the absolute value of the difference between the target cell RSRP value measured by the terminal and the adjacent cell RSRP value closest to the target cell RSRP value measured by the terminal is smaller than an absolute value threshold.
In one embodiment, the set construction module 220 is specifically configured to:
taking the average value of the RSRP values measured by all the boundary terminals as the RSRP value of the target cell;
sequencing the RSRP value of the target cell and the RSRP value of each adjacent cell from large to small;
constructing the evaluation set according to the cells corresponding to the RSRP values of the preset number;
wherein the evaluation set includes the target cell.
In one embodiment, the worth determining module 230 is specifically configured to:
and for any cell in the evaluation set, determining the access value degree of the cell according to the RSRP level mean value of the cell, the SINR mean value of the cell, the TA mean value of the cell, the uplink interference value of the cell and the PRB utilization rate of the cell.
In an embodiment, the instruction sending module 240 is specifically configured to:
determining a strong interference neighbor cell set according to the uplink interference level value of each neighbor cell;
determining an interference contribution value of the boundary terminal to the neighbor cells according to the transmitting power of the boundary terminal, the RB request number of the boundary terminal, the interference level value of each neighbor cell in the interference neighbor cell set, the transmitting power of each neighbor cell in the interference neighbor cell set and the RSRP value of each neighbor cell in the interference neighbor cell set received by the boundary terminal;
and sending a transmission power reduction instruction to the boundary terminal when the interference contribution value is greater than or equal to an interference contribution value threshold value.
In an embodiment, the uplink interference processing apparatus provided in the present invention further includes an RB configuration module, configured to:
under the condition that the boundary terminal initiates an uplink request, configuring target RB resources for the boundary terminal;
and the interference level value of the target RB resource is smaller than the corresponding interference level threshold value.
The terminal referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE).
The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for serving a terminal. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application.
Fig. 3 illustrates a physical structure diagram of an electronic device. As shown in fig. 3, the present invention also provides an electronic device, which may include: a processor (processor) 310, a Communication Interface (Communication Interface) 320, a memory (memory) 330 and a Communication bus 340, wherein the processor 310, the Communication Interface 320 and the memory 330 complete the Communication with each other through the Communication bus 340. The processor 310 may invoke the computer program in the memory 330 to perform the steps of the uplink interference handling method, for example, including:
screening out a boundary terminal of a target cell under the condition of meeting a triggering condition;
determining a target cell Reference Signal Received Power (RSRP) value according to the boundary terminal, and constructing an evaluation set according to the target cell RSRP value and an adjacent cell RSRP value;
determining the access value degree of each cell in the evaluation set and the maximum access value degree in the access value degrees of each cell;
and sending a command for reducing the transmission power to the boundary terminal under the condition that the difference between the maximum access value and the access value of the target cell is smaller than a value threshold.
In addition, the logic instructions in the memory 330 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, and various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, where the computer program product includes a computer program stored on a non-transitory computer-readable storage medium, where the computer program includes program instructions, and when the program instructions are executed by a computer, the computer can execute the steps of the uplink interference processing method provided in the foregoing embodiments, for example, the steps include:
screening out a boundary terminal of a target cell under the condition of meeting a triggering condition;
determining a target cell Reference Signal Received Power (RSRP) value according to the boundary terminal, and constructing an evaluation set according to the target cell RSRP value and an adjacent cell RSRP value;
determining the access value degree of each cell in the evaluation set and the maximum access value degree in the access value degrees of each cell;
and sending a transmission power reduction instruction to the boundary terminal under the condition that the difference between the maximum access value degree and the access value degree of the target cell is smaller than a value degree threshold value.
On the other hand, an embodiment of the present application further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to cause the processor to perform the steps of the method provided in each of the above embodiments, for example, including:
screening out a boundary terminal of a target cell under the condition of meeting a triggering condition;
determining a target cell Reference Signal Received Power (RSRP) value according to the boundary terminal, and constructing an evaluation set according to the target cell RSRP value and an adjacent cell RSRP value;
determining the access value degree of each cell in the evaluation set and the maximum access value degree in the access value degrees of each cell;
and sending a command for reducing the transmission power to the boundary terminal under the condition that the difference between the maximum access value and the access value of the target cell is smaller than a value threshold.
The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid State Disks (SSDs)), etc.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. An uplink interference processing method, comprising:
screening out a boundary terminal of a target cell under the condition of meeting a triggering condition;
determining a target cell Reference Signal Received Power (RSRP) value according to the boundary terminal, and constructing an evaluation set according to the target cell RSRP value and an adjacent cell RSRP value;
determining the access value degree of each cell in the evaluation set and the maximum access value degree in the access value degrees of each cell;
and sending a command for reducing the transmission power to the boundary terminal under the condition that the difference between the maximum access value and the access value of the target cell is smaller than a value threshold.
2. The uplink interference processing method according to claim 1, wherein the screening the boundary terminal of the target cell includes:
determining a terminal meeting the preset conditions in the target cell as the boundary terminal:
and the absolute value of the difference between the target cell RSRP value measured by the terminal and the adjacent cell RSRP value closest to the target cell RSRP value measured by the terminal is less than an absolute value threshold.
3. The uplink interference processing method according to claim 2, wherein the determining a target cell RSRP value according to the border terminal, and constructing an evaluation set according to the target cell RSRP value and an adjacent cell RSRP value comprises:
taking the average value of the RSRP values measured by all the boundary terminals as the RSRP value of the target cell;
sequencing the RSRP values of the target cell and the RSRP values of the adjacent cells from large to small;
constructing the evaluation set according to the cells corresponding to the RSRP values of the preset number;
wherein the evaluation set includes the target cell.
4. The method of claim 3, wherein the determining the access value of each cell in the evaluation set comprises:
and for any cell in the evaluation set, determining the access value degree of the cell according to the RSRP level mean value of the cell, the SINR mean value of the cell, the TA mean value of the cell, the uplink interference value of the cell and the PRB utilization rate of the cell.
5. The uplink interference processing method according to claim 1, further comprising:
under the condition that the difference between the maximum access value degree and the access value degree of the target cell is greater than or equal to a value degree threshold value, switching the boundary terminal to the cell corresponding to the maximum access value degree;
and sending the instruction for reducing the transmitting power to the boundary terminal.
6. The uplink interference processing method according to any one of claims 1 to 5, wherein the sending the instruction to reduce the transmission power to the border terminal includes:
determining a strong interference neighbor cell set according to the uplink interference level value of each neighbor cell;
determining an interference contribution value of the boundary terminal to the neighbor cells according to the transmitting power of the boundary terminal, the RB request number of the boundary terminal, the interference level value of each neighbor cell in the interference neighbor cell set, the transmitting power of each neighbor cell in the interference neighbor cell set and the RSRP value of each neighbor cell in the interference neighbor cell set received by the boundary terminal;
and sending a command of reducing the transmission power to the boundary terminal under the condition that the interference contribution value is greater than or equal to an interference contribution value threshold value.
7. The uplink interference processing method according to any one of claims 1 to 5, wherein the method further comprises:
under the condition that the boundary terminal initiates an uplink request, configuring target RB resources for the boundary terminal;
and the interference level value of the target RB resource is smaller than the corresponding interference level threshold value.
8. An uplink interference processing apparatus, comprising:
the terminal screening module is used for screening out the boundary terminal of the target cell under the condition that the triggering condition is met;
the set construction module is used for determining a Reference Signal Received Power (RSRP) value of a target cell according to the boundary terminal and constructing an evaluation set according to the RSRP value of the target cell and the RSRP value of an adjacent cell;
the value degree determining module is used for determining the access value degree of each cell in the evaluation set and the maximum access value degree in the access value degrees of each cell;
and the instruction sending module is used for sending an instruction for reducing the transmission power to the boundary terminal under the condition that the difference between the maximum access value degree and the access value degree of the target cell is smaller than a value degree threshold value.
9. An electronic device comprising a processor and a memory storing a computer program, wherein the processor implements the steps of the uplink interference processing method according to any one of claims 1 to 7 when executing the computer program.
10. A non-transitory computer-readable storage medium, on which a computer program is stored, wherein the computer program, when being executed by a processor, implements the steps of the uplink interference processing method according to any one of claims 1 to 7.
CN202110801665.2A 2021-07-15 2021-07-15 Uplink interference processing method and device Pending CN115623572A (en)

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