CN107277834B - Method and device for relieving uplink interference - Google Patents

Method and device for relieving uplink interference Download PDF

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Publication number
CN107277834B
CN107277834B CN201610214375.7A CN201610214375A CN107277834B CN 107277834 B CN107277834 B CN 107277834B CN 201610214375 A CN201610214375 A CN 201610214375A CN 107277834 B CN107277834 B CN 107277834B
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uplink
cell
difference
path loss
current path
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CN107277834A (en
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喻理
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • 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
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range

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

Abstract

the invention discloses a method and a device for relieving uplink interference, which are used for reducing the complexity and the misadjustment probability for relieving the uplink interference and ensuring the effect of relieving the uplink interference. The method comprises the following steps: the base station configures A3 measurement related parameters for each UE in the jurisdiction range of the base station, determines the current path loss difference of each UE based on the A3 measurement result reported by each UE, and determines the uplink receiving power upper limit from each UE to the corresponding service cell based on the current path loss difference of each UE and the uplink receiving interference power upper limit from each UE to the adjacent cell corresponding to the current path loss difference, and does not adjust the uplink receiving power of the corresponding service cell to exceed the transmitting power of the UE with the corresponding uplink receiving power upper limit. Therefore, the target UE is screened based on the A3 measurement result reported by each UE, so that the accuracy of the screened target UE is higher, the probability of error adjustment is reduced, and the effect of relieving uplink interference is ensured.

Description

method and device for relieving uplink interference
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for mitigating uplink interference.
Background
in a Long Term Evolution (LTE) system, as the number of User Equipments (UEs) is increasing, the uplink interference problem of the LTE system becomes more and more serious, and especially for UEs between overlapping coverage cells, the higher the received power to their own serving cell is, the larger the interference to neighboring cells is. In order to reduce system interference and improve communication quality, in the prior art, a method of "open-loop power control plus closed-loop adjustment" is generally adopted, and "slow power control" is performed for each UE, wherein an implementation scheme of the closed-loop adjustment mainly includes: power control is performed based on uplink received power, power control is performed based on an uplink received target Signal to Interference plus Noise Ratio (SINR), and power control is performed based on an uplink and downlink path loss difference value. In the foregoing closed-loop adjustment method, the method of performing closed-loop power control based on the uplink received target SINR can reduce system interference and ensure the transmission rate of the UE, and is the most common method for alleviating uplink interference, as shown in fig. 1, the specific method is as follows:
Firstly, the base station judges whether the uplink receiving power of the service cell of the UE exceeds a preset upper limit.
Then, when the base station judges that the uplink receiving power of the serving cell of the UE does not exceed the preset upper limit, the base station calculates the uplink receiving target SINR based on the interference condition of the adjacent cell estimated by the base station or based on the interference information level transmitted by the adjacent cell through a preset interface.
Finally, when the base station determines that the actually measured uplink receiving SINR is smaller than the calculated uplink receiving target SINR, the base station sends a Transmit Power Control (TPC) command to the UE; or when the actually measured uplink receiving SINR is determined to be larger than the calculated uplink receiving target SINR, sending a down TPC command to the UE.
Based on the above analysis, the method for performing closed-loop power control based on the uplink received target SINR in the prior art has the following problems:
(1) the base station calculates the uplink receiving target SINR only based on the estimated interference condition of the adjacent cell, the actual uplink interference condition is not considered, if the calculated uplink receiving target SINR is too high based on the interference estimation value of the serving cell to the adjacent cell, the base station continuously sends an up TPC command to the UE when the UE does not reach the uplink receiving target SINR, and therefore the transmitting power of the UE is too high, and the interference noise of the UE to the adjacent cell is raised.
(2) When the adjacent cell transmits the interference information grade of the adjacent cell to the base station, the adjacent cell can only transmit the interference information grade to the base station by adding a preset interface, so that the complexity of realizing closed-loop power control is higher, and only the interference grade is transmitted to the base station by the adjacent cell, and the base station can not adjust power according to specific interference conditions, so that the effect of relieving uplink interference is influenced.
(3) Since the neighboring cell cannot know the source of the interference (i.e., cannot know which cell is in the jurisdiction of the UE and whether the interference is caused by the UE in the system), it may be possible to determine whether the transmission power of the UE is adjusted by mistake.
Disclosure of Invention
the embodiment of the invention provides a method for relieving uplink interference, which is used for solving the problems of high implementation complexity, high misadjustment probability and poor adjustment effect of the method for relieving the uplink interference by controlling uplink receiving power based on an uplink receiving target SINR in the prior art.
The embodiment of the invention provides the following specific technical scheme:
A method of mitigating uplink interference, comprising:
When the base station determines that the uplink interference in a set area exceeds a set threshold value, configuring A3 measurement related parameters for each user equipment UE in the jurisdiction range of the base station in sequence, and indicating each UE to carry out A3 measurement and report an A3 measurement result when the UE is determined to meet preset conditions;
the base station respectively determines the current path loss difference of each UE based on the A3 measurement result reported by each UE, wherein the A3 measurement result reported by one UE is a measurement result set obtained after the UE carries out A3 measurement on each adjacent cell corresponding to the UE currently;
The base station respectively determines the uplink receiving power upper limit from each UE to the corresponding service cell based on the current path loss difference of each UE and the uplink receiving interference power upper limit from each UE to the adjacent cell corresponding to the current path loss difference;
and the base station screens out the UE of which the uplink receiving power of the corresponding service cell exceeds the corresponding uplink receiving power upper limit in each UE as a target UE, and does not adjust the transmitting power of the target UE.
preferably, further comprising:
and the base station indicates each UE to quit A3 measurement and report A3 measurement quit information when determining that the difference value of the Reference Signal Received Power (RSRP) of each adjacent cell corresponding to the UE and the RSRP of the serving cell is larger than a preset threshold value.
Preferably, the determining, by the base station, the current path loss difference of any one UE based on the a3 measurement result reported by any one UE includes:
After receiving the a3 measurement result reported by any one UE, the base station determines the difference between the RSRP of each neighboring cell corresponding to the any one UE and the RSRP of the serving cell corresponding to the any one UE, and determines the maximum difference among the differences;
The base station determines the difference between the reference signal transmission power of the serving cell and the reference signal transmission power of the neighboring cell corresponding to the maximum difference based on the cell identifier of the corresponding serving cell and the cell identifier of the neighboring cell corresponding to the maximum difference, which are carried in the a3 measurement result reported by any one UE;
And the base station determines the current path loss difference of any UE based on the maximum difference and the difference between the reference signal transmitting power of the serving cell and the reference signal transmitting power of the adjacent cell corresponding to the maximum difference.
preferably, the determining, by the base station, the uplink received power upper limit from any one UE to the corresponding serving cell based on the current path loss difference of any one UE and the uplink received interference power upper limit from any one UE to the neighboring cell corresponding to the current path loss difference includes:
and the base station calculates the uplink receiving power upper limit from any UE to the corresponding service cell based on the sum of the current path loss difference of any UE and the uplink receiving interference power upper limit from any UE to the adjacent cell corresponding to the current path loss difference.
Preferably, the uplink received interference power upper limit from the UE to any corresponding neighboring cell is preconfigured by the base station based on the detected uplink interference condition of any neighboring cell.
an apparatus for mitigating uplink interference, comprising:
The indicating unit is used for configuring A3 measurement related parameters for each user equipment UE in the jurisdiction range of the indicating unit in sequence when the uplink interference in the set area exceeds the set threshold value, and indicating each UE to carry out A3 measurement and report an A3 measurement result when the uplink interference in the set area is determined to meet the preset conditions;
A determining unit, configured to determine, based on A3 measurement result reported by each UE, a current path loss difference of each UE, where an A3 measurement result reported by one UE is a measurement result set obtained after the UE performs A3 measurement on each neighboring cell currently corresponding to the UE;
A calculating unit, configured to determine an uplink received power upper limit from each UE to a corresponding serving cell based on a current path loss difference of each UE and an uplink received interference power upper limit from each UE to a neighboring cell corresponding to the current path loss difference;
and the adjusting unit is used for screening out the UE of which the uplink receiving power of the corresponding service cell exceeds the corresponding uplink receiving power upper limit from each UE as the target UE, and not adjusting the transmitting power of the target UE.
Preferably, the indication unit is further configured to:
and indicating each UE to quit A3 measurement and report A3 measurement quit information when determining that the difference value of the Reference Signal Received Power (RSRP) of each adjacent cell corresponding to the UE and the RSRP of the serving cell is larger than a preset threshold value.
preferably, when determining the current path loss difference of any UE based on the a3 measurement result reported by any UE, the determining unit is configured to:
after receiving the a3 measurement result reported by any one UE, determining a difference value between the RSRP of each neighboring cell corresponding to the any one UE and the RSRP of the serving cell corresponding to the any one UE, and determining a maximum difference value among the difference values;
Determining a difference value between the reference signal transmission power of the serving cell and the reference signal transmission power of the neighboring cell corresponding to the maximum difference value based on the cell identifier of the corresponding serving cell and the cell identifier of the neighboring cell corresponding to the maximum difference value, which are carried in the a3 measurement result reported by any one UE;
and determining the current path loss difference of any UE based on the maximum difference and the difference between the reference signal transmitting power of the serving cell and the reference signal transmitting power of the adjacent cell corresponding to the maximum difference.
preferably, based on a current path loss difference of any one UE and an uplink received interference power upper limit of a neighboring cell corresponding to the current path loss difference, when determining the uplink received power upper limit of the any one UE to the corresponding serving cell, the calculating unit is configured to:
And calculating the uplink receiving power upper limit from any UE to the corresponding service cell based on the sum of the current path loss difference of any UE and the uplink receiving interference power upper limit from any UE to the adjacent cell corresponding to the current path loss difference.
Preferably, the uplink received interference power upper limit from the UE to any corresponding neighboring cell is preconfigured by the apparatus based on the detected uplink interference condition of any neighboring cell.
The embodiment of the invention has the following beneficial effects:
In the embodiment of the invention, the A3 measurement related parameters are configured for each UE in the set area, so that the set of the UEs causing high interference to the set area can be determined according to the A3 measurement results reported by the UEs meeting the preset conditions, the transmitting power of the UEs causing high interference to the set area can be adjusted in a targeted manner, the probability of error adjustment is reduced, and the problem of further raising the interference strength to the set area due to error adjustment of the transmitting power of the UEs is avoided. Moreover, the base station does not need to estimate the interference condition of the adjacent cell, and the adjacent cell does not need to transmit the interference level to the base station through a preset interface, so that the transmitting power of the UE can be specifically adjusted directly based on the A3 measurement result reported by each UE, the adjustment accuracy is ensured, the setting of the interface between the adjacent cell and the base station is also reduced, and the implementation mode is simple.
Further, when the current path loss difference of the UE is calculated, the difference between the reference signal transmitting power of the serving cell corresponding to the UE and the reference signal transmitting power of the neighboring cell corresponding to the maximum difference is considered, so that the calculated path loss difference is more accurate, the accuracy of adjustment is further ensured, and the probability of misadjustment is reduced.
Drawings
Fig. 1 is a flowchart illustrating a method for performing closed-loop power control based on an uplink received target SINR in the prior art;
Fig. 2 is a schematic diagram illustrating an overview of a method for mitigating uplink interference according to an embodiment of the present invention;
Fig. 3 is a schematic flowchart of a method for mitigating uplink interference according to an embodiment of the present invention;
Fig. 4 is a functional structure diagram of an apparatus for mitigating uplink interference in an embodiment of the present invention.
Detailed Description
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problems of high implementation complexity, high misadjustment probability and poor adjustment effect of the method for controlling the uplink receiving power based on the uplink receiving target SINR to relieve the uplink interference in the prior art, in the embodiment of the invention, when the uplink interference in a set area is determined to exceed a set threshold, each base station in the set area determines the current path loss difference of each UE in the jurisdiction range of the base station based on the A3 measurement result reported by each UE when the UE meets the preset condition, respectively determining the uplink receiving power upper limit of each UE to the corresponding service cell based on the current path loss difference of each UE and the uplink receiving interference power upper limit of the adjacent cell corresponding to the current path loss difference of each UE (the uplink receiving interference power upper limit of the adjacent cell is pre-configured based on the detected uplink interference situation of the adjacent cell), and the transmitting power of the UE of which the uplink receiving power of the corresponding serving cell exceeds the corresponding uplink receiving power upper limit is not adjusted up any more.
the present invention will be described in detail with reference to specific examples, but it is to be understood that the present invention is not limited to the examples.
Referring to fig. 2, in the embodiment of the present invention, a specific process of the method for alleviating uplink interference is as follows:
step 200: when the base station determines that the uplink interference in the set area exceeds the set threshold, the base station configures A3 measurement related parameters for each UE in the jurisdiction range of the base station in turn, and instructs each UE to perform A3 measurement and report A3 measurement results when the UE is determined to meet the preset conditions.
specifically, when step 200 is executed, the following steps may be adopted, but not limited to:
Firstly, each base station in the set area monitors the uplink interference condition in the set area in real time, wherein, a tester for network optimization can also monitor the uplink interference condition in the set area.
Then, when the base station determines that the uplink interference in the set area exceeds a set threshold, a3 measurement related parameters are configured for each UE in the set area in sequence.
And finally, reporting an A3 measurement result when each UE in the set area determines that the difference value of the RSRP of a neighboring area corresponding to the UE and the RSRP of a serving cell corresponding to the UE is larger than a preset threshold value. If the difference between the RSRP of a plurality of neighboring cells currently corresponding to one UE (where the neighboring cell currently corresponding to one UE is a part or all of all neighboring cells corresponding to the serving cell of the UE) and the RSRP of the corresponding serving cell is greater than a preset threshold, the UE needs to perform A3 measurement for each neighboring cell currently corresponding to the UE, and report A3 measurement result in sequence.
for example: the area is set as area a, and the number of UEs in area a is 10.
And the base station A monitors the uplink interference condition of the area A in real time, and sequentially configures A3 measurement related parameters for 10 UEs in the area A when the uplink interference of the area A is determined to exceed a set threshold value.
When determining that the difference between the RSRP of the neighboring cell 1 currently corresponding to the UE1 (6 neighboring cells corresponding to the serving cell 1 of the UE1, respectively neighboring cells 1 to 6) in the area a and the RSRP of the serving cell 1, and the difference between the RSRP of the neighboring cell 2 and the RSRP of the serving cell 1 are both greater than a preset threshold, reporting both the A3 measurement result of the neighboring cell 1 and the A3 measurement result of the neighboring cell 2 (hereinafter, the set of the A3 measurement result of the neighboring cell 1 and the A3 measurement result of the neighboring cell 2 is referred to as an A3 measurement result 1) to the base station a.
similarly, when determining that the difference between the RSRP of the neighboring cell 7 currently corresponding to the UE2 (6 neighboring cells corresponding to the serving cell 2 of the UE2, respectively neighboring cells 7 to 12) in the area a and the RSRP of the serving cell 2 is greater than the preset threshold, the UE2 reports the A3 measurement result 2 of the neighboring cell 7 to the base station a.
When determining that the difference between the RSRP of the neighboring cell 13 currently corresponding to the UE3 (6 neighboring cells corresponding to the serving cell 3 of the UE3, namely the neighboring cells 13-18) in the area a and the RSRP of the serving cell 3 is greater than the preset threshold, the UE3 reports the A3 measurement result 3 of the neighboring cell 13 to the base station a.
Step 201: the base station determines the current path loss difference of each UE respectively based on the A3 measurement results reported by each UE, wherein the A3 measurement result reported by one UE is a measurement result set obtained after the UE performs A3 measurement on each adjacent cell corresponding to the UE.
specifically, when the base station determines the current path loss difference of any one UE based on the a3 measurement result reported by any one UE, the following steps may be adopted, but are not limited to:
firstly, after receiving the a3 measurement result reported by any one of the UEs, the base station determines the difference between the RSRP of each neighboring cell corresponding to the any one of the UEs and the RSRP of the serving cell corresponding to the any one of the UEs, and determines the maximum difference among the differences.
Then, the base station determines the difference between the reference signal transmission power of the serving cell and the reference signal transmission power of the neighboring cell corresponding to the maximum difference, based on the cell identifier of the corresponding serving cell and the cell identifier of the neighboring cell corresponding to the maximum difference, which are carried in the a3 measurement result reported by any one of the UEs.
Preferably, in a certain area, although the reference signal transmission power preliminarily configured by each base station for each cell in its own jurisdiction is the same, due to network optimization at a later stage, the reference signal transmission power of each cell in its own jurisdiction may be adjusted by each base station, that is, the reference signal transmission power of each cell in a certain area may be different, and since the neighboring cell corresponding to each cell in its own jurisdiction may be a cell in the jurisdiction of other base stations, in order for the base station to obtain the reference signal transmission power of all neighboring cells (possibly cells in the jurisdiction of other base stations) corresponding to each cell in its own jurisdiction, and in order that the calculated current path loss difference of each UE is more accurate, after the base station sequentially configures the reference signal transmission power for each cell in its own jurisdiction, and respectively interacting with other base stations to obtain the reference signal transmitting power of each adjacent cell corresponding to each cell in the self-administration range, calculating the difference value between the reference signal transmitting power of each cell in the self-administration range and the reference signal transmitting power of each corresponding adjacent cell, and respectively storing the difference value between the reference signal transmitting power of each cell in the self-administration range and the reference signal transmitting power of each corresponding adjacent cell based on the cell identification of each cell in the self-administration range.
Specifically, after receiving the A3 measurement result reported by any one of the UEs, the base station determines the maximum difference value among the differences between the RSRP of each neighboring cell corresponding to the any one of the UEs and the RSRP of the serving cell corresponding to the any one of the UEs, and then determines the difference value between the reference signal transmit power of the serving cell and the reference signal transmit power of the neighboring cell corresponding to the maximum difference value based on the cell identifier of the serving cell corresponding to the A3 measurement result and the cell identifier of the neighboring cell corresponding to the maximum difference value.
And finally, the base station determines the current path loss difference of any UE based on the maximum difference and the difference between the reference signal transmitting power of the serving cell and the reference signal transmitting power of the adjacent cell corresponding to the maximum difference.
For example: after the base station a preliminarily configures reference signal transmitting power for 10 cells in its jurisdiction range, it interacts with other base stations to obtain reference signal transmitting power of each neighboring cell corresponding to the 10 cells, and calculates a difference between the reference signal transmitting power of the 10 cells and the reference signal transmitting power of each corresponding neighboring cell, and stores the difference between the reference signal transmitting power of the 10 cells and the reference signal transmitting power of each corresponding neighboring cell based on the cell identifiers (cell 1-cell 10) of the 10 cells.
after receiving the A3 measurement result 1 reported by the UE1, the base station a determines that the difference between the RSRP of the neighboring cell 1 corresponding to the UE1 and the RSRP of the serving cell 1 is 6dbm, determines that the difference between the RSRP of the neighboring cell 2 corresponding to the UE1 and the RSRP of the serving cell 1 is 3dbm, and determines that the maximum difference among the differences is: difference value (6dbm) between RSRP of adjacent cell 1 and RSRP of serving cell 1.
The method for the base station a to determine the difference (i.e., the maximum difference) between the RSRP of the neighboring cell 7 corresponding to the UE2 and the RSRP of the serving cell 2, and determine the difference (i.e., the maximum difference) between the RSRP of the neighboring cell 13 corresponding to the UE3 and the RSRP of the serving cell 3 is the same as the above method, and is not described herein again.
the base station a determines, based on the cell identifier (cell 1) of the serving cell 1 carried in the A3 measurement result 1 reported by the UE1, a difference between the reference signal transmit power of the serving cell 1 corresponding to the UE1 and the reference signal transmit power of the neighboring cell 1.
the method for determining the difference between the reference signal transmission power of the serving cell 2 corresponding to the UE2 and the reference signal transmission power of the neighboring cell 7 and determining the difference between the reference signal transmission power of the serving cell 3 corresponding to the UE3 and the reference signal transmission power of the neighboring cell 13 by the base station a is the same as the above method, and is not described herein again.
finally, the base station a determines the current path loss difference 1 of the UE1 based on the determined maximum difference and the difference between the reference signal transmission power of the serving cell 1 and the reference signal transmission power of the neighboring cell 1.
the method for the base station a to determine the current path loss difference 2 of the UE2 and determine the current path loss difference 3 of the UE3 is the same as the above method, and is not described herein again.
step 202: and the base station respectively determines the uplink receiving power upper limit from each UE to the corresponding service cell based on the current path loss difference of each UE and the uplink receiving interference power upper limit from each UE to the adjacent cell corresponding to the current path loss difference.
Preferably, in order to ensure the accuracy of the uplink received power upper limit from each UE to the corresponding serving cell, the base station may pre-configure the uplink received interference power upper limit for each UE to each neighboring cell of the corresponding serving cell based on the detected uplink interference condition from each UE to each neighboring cell of the corresponding serving cell.
Specifically, the base station determines, based on a current path loss difference of any one UE and an uplink received interference power upper limit of a neighboring cell corresponding to the current path loss difference, that the uplink received power upper limit of the any one UE to the corresponding serving cell is determined, which may adopt, but is not limited to, the following manners:
And the base station calculates the uplink receiving power upper limit from any UE to the corresponding service cell based on the sum of the current path loss difference of any UE and the uplink receiving interference power upper limit from any UE to the adjacent cell corresponding to the current path loss difference.
For example: the base station a pre-configures, based on the detected uplink interference condition from each UE to each neighboring cell of the corresponding serving cell, an uplink received interference power upper limit for each neighboring cell from each UE to the corresponding serving cell, where the uplink received interference power upper limit of the neighboring cell 1 currently corresponding to the UE1 is the uplink received interference power upper limit 1.
The base station A calculates the uplink received power upper limit 1 from the UE1 to the serving cell 1 based on the sum of the current path loss difference 1 of the UE1 and the uplink received interference power upper limit 1 from the UE1 to the adjacent cell 1.
the method for the base station a to calculate the uplink received power upper limit 2 from the UE2 to the serving cell 2 and calculate the uplink received power upper limit 3 from the UE3 to the serving cell 3 is the same as the above method, and is not described herein again.
Step 203: and the base station screens out the UE of which the uplink receiving power of the corresponding service cell exceeds the corresponding uplink receiving power upper limit in each UE as a target UE, and does not adjust the transmitting power of the target UE.
For example: in the above 3 UEs, the uplink received power 1 from UE1 to serving cell 1 exceeds the uplink received power upper limit 1, and the uplink received power 2 from UE2 to serving cell 2 exceeds the uplink received power upper limit 2, at which time, the base station a will not adjust the transmit power of UE1 and the transmit power of UE 2.
Further, the base station instructs each UE to quit A3 measurement and report A3 measurement quit information when determining that the difference between the RSRP of each neighboring cell corresponding to the UE and the RSRP of the serving cell is greater than a preset threshold.
For example: and when the difference values of the RSRP of the adjacent cell 1 and the adjacent cell 2 currently corresponding to the UE1 and the RSRP of the serving cell 1 are both greater than a preset threshold value, exiting the A3 measurement, and reporting the A3 measurement exit information 1 to the base station A.
the above embodiment is further described in detail by using a specific application scenario, and referring to fig. 3, in the embodiment of the present invention, a specific flow of the method for mitigating uplink interference is as follows:
Step 300: and each base station in the set area monitors the uplink interference condition in the set area in real time.
step 301: and when the base station determines that the uplink interference in the set area exceeds a set threshold value, configuring A3 measurement related parameters for each UE in the jurisdiction range of the base station in turn.
step 302: and reporting an A3 measurement result when each UE in the set area determines that the difference value of the RSRP of a neighboring area corresponding to the UE and the RSRP of a serving cell corresponding to the UE is larger than a preset threshold value.
If the difference between the RSRP of a plurality of neighboring cells currently corresponding to one UE (where the neighboring cell currently corresponding to one UE is a part or all of all neighboring cells corresponding to the serving cell of the UE) and the RSRP of the corresponding serving cell is greater than a preset threshold, the UE needs to perform A3 measurement for each neighboring cell currently corresponding to the UE, and report A3 measurement result in sequence.
Step 303: after receiving the a3 measurement result reported by any one of the UEs, the base station determines the difference between the RSRP of each neighboring cell corresponding to the any one of the UEs and the RSRP of the serving cell corresponding to the any one of the UEs, and determines the maximum difference among the differences.
Step 304: and the base station determines the difference between the reference signal transmitting power of the serving cell and the reference signal transmitting power of the neighboring cell corresponding to the maximum difference value based on the cell identifier of the corresponding serving cell and the cell identifier of the neighboring cell corresponding to the maximum difference value, which are carried in the a3 measurement result reported by any one of the UEs.
step 305: and the base station determines the current path loss difference of any UE based on the maximum difference and the difference between the reference signal transmitting power of the serving cell and the reference signal transmitting power of the adjacent cell corresponding to the maximum difference.
Step 306: and the base station respectively determines the uplink receiving power upper limit from each UE to the corresponding service cell based on the current path loss difference of each UE and the uplink receiving interference power upper limit from each UE to the adjacent cell corresponding to the current path loss difference.
Step 307: and the base station screens out the UE of which the uplink receiving power of the corresponding service cell exceeds the corresponding uplink receiving power upper limit in each UE as a target UE, and does not adjust the transmitting power of the target UE.
Step 308: and the base station indicates each UE to quit A3 measurement and report A3 measurement quit information when the difference value between the RSRP of each adjacent cell corresponding to the UE and the RSRP of the serving cell is larger than a preset threshold value.
Based on the foregoing embodiments, referring to fig. 4, in an embodiment of the present invention, an apparatus for mitigating uplink interference at least includes:
An indicating unit 400, configured to configure A3 measurement related parameters for each UE in its jurisdiction range in sequence when it is determined that uplink interference in a set area exceeds a set threshold, and instruct each UE to perform A3 measurement and report an A3 measurement result when it is determined that a preset condition is met;
a determining unit 401, configured to determine, based on the A3 measurement result reported by each UE, a current path loss difference of each UE, where an A3 measurement result reported by one UE is a measurement result set obtained after the UE performs A3 measurement on each neighboring cell currently corresponding to the UE;
A calculating unit 402, configured to determine, based on a current path loss difference of each UE and an uplink received interference power upper limit of an adjacent cell corresponding to each UE to the current path loss difference, an uplink received power upper limit of each UE to a corresponding serving cell respectively;
An adjusting unit 403, configured to screen out, among the UEs, the UE whose uplink received power of the corresponding serving cell exceeds the corresponding uplink received power upper limit as a target UE, and not adjust the transmit power of the target UE.
Preferably, the indicating unit 400 is further configured to:
And indicating each UE to quit A3 measurement and report A3 measurement quit information when determining that the difference value of the Reference Signal Received Power (RSRP) of each adjacent cell corresponding to the UE and the RSRP of the serving cell is larger than a preset threshold value.
Preferably, when determining the current path loss difference of any UE based on the a3 measurement result reported by any UE, the determining unit 401 is configured to:
After receiving the a3 measurement result reported by any one of the UEs, determining a difference value between the RSRP of each neighboring cell corresponding to the any one of the UEs and the RSRP of the serving cell corresponding to the any one of the UEs, and determining a maximum difference value among the difference values;
Determining a difference value between the reference signal transmission power of the serving cell and the reference signal transmission power of the neighboring cell corresponding to the maximum difference value, based on the cell identifier of the corresponding serving cell carried in the a3 measurement result reported by any one of the UEs;
and determining the current path loss difference of any UE based on the maximum difference and the difference between the reference signal transmitting power of the serving cell and the reference signal transmitting power of the adjacent cell corresponding to the maximum difference.
Preferably, based on a current path loss difference of any one UE and an uplink received interference power upper limit of a neighboring cell corresponding to the current path loss difference from the any one UE, when determining the uplink received power upper limit from the any one UE to a corresponding serving cell, the calculating unit 402 is configured to:
and calculating the uplink receiving power upper limit from any UE to the corresponding service cell based on the sum of the current path loss difference of any UE and the uplink receiving interference power upper limit from any UE to the adjacent cell corresponding to the current path loss difference.
preferably, the uplink received interference power upper limit from the UE to any corresponding neighboring cell is preconfigured by the apparatus based on the detected uplink interference condition of any neighboring cell.
to sum up, in the embodiment of the present invention, the base station configures A3 measurement related parameters for each UE in the set area, and determines the current path loss difference of each UE based on the A3 measurement result reported by each UE, and determines the uplink received power upper limit from each UE to the corresponding serving cell based on the current path loss difference of each UE and the uplink received interference power upper limit from each UE to the neighboring cell corresponding to the current path loss difference, and does not adjust the uplink received power of the corresponding serving cell to the UE whose uplink received power exceeds the uplink received power upper limit. Therefore, by configuring A3 measurement related parameters for each UE in the set area, the set of UEs causing high interference to the set area can be determined according to the A3 measurement results reported by the UEs meeting the preset conditions, so that the transmitting power of the UEs causing high interference to the set area can be adjusted in a targeted manner, the probability of error adjustment is reduced, and the problem of further raising the interference strength to the set area due to error adjustment of the transmitting power of the UEs is solved. Moreover, the base station does not need to estimate the interference condition of the adjacent cell, and the adjacent cell does not need to transmit the interference level to the base station through a preset interface, so that the transmitting power of the UE can be specifically adjusted directly based on the A3 measurement result reported by each UE, the adjustment accuracy is ensured, the setting of the interface between the adjacent cell and the base station is also reduced, and the implementation mode is simple.
further, when the current path loss difference of the UE is calculated, the difference between the reference signal transmitting power of the serving cell corresponding to the UE and the reference signal transmitting power of the neighboring cell corresponding to the maximum difference is considered, so that the calculated path loss difference is more accurate, the accuracy of adjustment is further ensured, and the probability of misadjustment is reduced.
as will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention 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 invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. 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.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
it will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.

Claims (10)

1. a method for mitigating uplink interference, comprising:
When the base station determines that the uplink interference in the set area exceeds a set threshold value, configuring A3 measurement related parameters for each user equipment UE in the jurisdiction range of the base station in sequence, and indicating each UE to carry out A3 measurement and report an A3 measurement result when the UE is determined to meet preset conditions;
The base station respectively determines the current path loss difference of each UE based on the A3 measurement result reported by each UE, wherein the A3 measurement result reported by one UE is a measurement result set obtained after the UE carries out A3 measurement on each adjacent cell corresponding to the UE currently;
The base station respectively determines the uplink receiving power upper limit from each UE to the corresponding service cell based on the current path loss difference of each UE and the uplink receiving interference power upper limit from each UE to the adjacent cell corresponding to the current path loss difference;
And the base station screens out the UE of which the uplink receiving power of the corresponding service cell exceeds the corresponding uplink receiving power upper limit in each UE as a target UE, and does not adjust the transmitting power of the target UE.
2. The method of claim 1, further comprising:
and the base station indicates each UE to quit A3 measurement and report A3 measurement quit information when determining that the difference value of the Reference Signal Received Power (RSRP) of each adjacent cell corresponding to the UE and the RSRP of the serving cell is larger than a preset threshold value.
3. The method of claim 1, wherein the base station determines the current path loss difference of any one UE based on the a3 measurement result reported by the any one UE, comprising:
After receiving the a3 measurement result reported by any one UE, the base station determines the difference between the RSRP of each neighboring cell corresponding to the any one UE and the RSRP of the serving cell corresponding to the any one UE, and determines the maximum difference among the differences;
the base station determines the difference between the reference signal transmitting power of the serving cell and the reference signal transmitting power of the neighboring cell corresponding to the maximum difference value based on the cell identifier of the corresponding serving cell and the cell identifier of the neighboring cell corresponding to the maximum difference value, which are carried in the a3 measurement result reported by any one UE;
And the base station determines the current path loss difference of any UE based on the maximum difference and the difference between the reference signal transmitting power of the serving cell and the reference signal transmitting power of the adjacent cell corresponding to the maximum difference.
4. The method of claim 1, wherein the base station determines the uplink received power upper limit from any one UE to the corresponding serving cell based on the current path loss difference of any one UE and the uplink received interference power upper limit from any one UE to the neighboring cell corresponding to the current path loss difference, and includes:
And the base station calculates the uplink receiving power upper limit from any UE to the corresponding service cell based on the sum of the current path loss difference of any UE and the uplink receiving interference power upper limit from any UE to the adjacent cell corresponding to the current path loss difference.
5. the method of claim 1 or 4, wherein the uplink received interference power upper limit from the UE to any corresponding neighboring cell is preconfigured by the base station based on the detected uplink interference condition of any neighboring cell.
6. an apparatus for mitigating uplink interference, comprising:
the indicating unit is used for configuring A3 measurement related parameters for each user equipment UE in the jurisdiction range of the indicating unit in sequence when the uplink interference in the set area exceeds the set threshold value, and indicating each UE to carry out A3 measurement and report an A3 measurement result when the uplink interference in the set area is determined to meet the preset conditions;
a determining unit, configured to determine, based on A3 measurement result reported by each UE, a current path loss difference of each UE, where an A3 measurement result reported by one UE is a measurement result set obtained after the UE performs A3 measurement on each neighboring cell currently corresponding to the UE;
A calculating unit, configured to determine an uplink received power upper limit from each UE to a corresponding serving cell based on a current path loss difference of each UE and an uplink received interference power upper limit from each UE to a neighboring cell corresponding to the current path loss difference;
And the adjusting unit is used for screening out the UE of which the uplink receiving power of the corresponding service cell exceeds the corresponding uplink receiving power upper limit from each UE as the target UE, and not adjusting the transmitting power of the target UE.
7. The apparatus of claim 6, wherein the indication unit is further to:
and indicating each UE to quit A3 measurement and report A3 measurement quit information when determining that the difference value of the Reference Signal Received Power (RSRP) of each adjacent cell corresponding to the UE and the RSRP of the serving cell is larger than a preset threshold value.
8. The apparatus of claim 6, wherein when determining the current path loss difference of any UE based on the a3 measurement result reported by any UE, the determining unit is configured to:
After receiving the a3 measurement result reported by any one UE, determining a difference value between the RSRP of each neighboring cell corresponding to the any one UE and the RSRP of the serving cell corresponding to the any one UE, and determining a maximum difference value among the difference values;
determining a difference value between the reference signal transmission power of the serving cell and the reference signal transmission power of the neighboring cell corresponding to the maximum difference value based on the cell identifier of the corresponding serving cell and the cell identifier of the neighboring cell corresponding to the maximum difference value, which are carried in the a3 measurement result reported by any one UE;
And determining the current path loss difference of any UE based on the maximum difference and the difference between the reference signal transmitting power of the serving cell and the reference signal transmitting power of the adjacent cell corresponding to the maximum difference.
9. The apparatus of claim 6, wherein based on a current path loss difference of any one UE and an uplink received interference power upper limit of a neighboring cell corresponding to the current path loss difference, when determining the uplink received power upper limit from the any one UE to a corresponding serving cell, the calculating unit is configured to:
And calculating the uplink receiving power upper limit from any UE to the corresponding service cell based on the sum of the current path loss difference of any UE and the uplink receiving interference power upper limit from any UE to the adjacent cell corresponding to the current path loss difference.
10. The apparatus according to claim 6 or 9, wherein the uplink received interference power upper limit of the UE to the corresponding any one of the neighboring cells is preconfigured by the apparatus based on the detected uplink interference condition of the any one of the neighboring cells.
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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103428753B (en) * 2012-05-24 2017-05-24 电信科学技术研究院 Uplink movement method, system, and device
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Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Further Analysis on MDT with eICIC;CATT;《3GPP TSG RAN WG2 Meeting #92 R2-156824》;20151116;全文 *
Miscellaneous corrections to 36.213;CATT;《3GPP TSG-RAN Meeting #84 R1-160347》;20160215;全文 *

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