CN111371517B - Method and device for evaluating reciprocity of far-end interference - Google Patents
Method and device for evaluating reciprocity of far-end interference Download PDFInfo
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Abstract
The invention provides a method and a device for evaluating far-end interference reciprocity. The method comprises the following steps: acquiring the number of times of a first interference signal of a far-end interference signal which is received by a disturbed station within evaluation time and is sent by at least one disturbing station; acquiring the number of times of a second interference signal of a far-end interference signal sent by an interfered station in evaluation time; for each interference station, sequentially acquiring the times of third interference signals of the far-end interference signals received by the target interference station within the evaluation time and sent by the interfered station or the interference stations except the target interference station; acquiring the number of times of a fourth interference signal of a far-end interference signal sent by each interference station within evaluation time; and determining the far-end interference reciprocity rate between the interfered station and each interfering station according to a preset algorithm according to the times of each first interference signal, the times of each second interference signal, the times of each third interference signal and the times of each fourth interference signal. The invention can carry out quantitative analysis on the reciprocity of the far-end interference and provides a reliable basis for avoiding the far-end interference.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for evaluating far-end interference reciprocity.
Background
Under certain meteorological conditions, a layer with inverse temperature or water vapor sharply reduced along with height exists in the atmospheric troposphere, electric waves in the layer form super-refraction propagation, propagation loss is small, ultra-long distance propagation can be achieved, most of electric wave radiation is limited in the layer and is similar to the propagation in a waveguide, and the phenomenon is called atmospheric waveguide propagation of electromagnetic waves. When atmospheric waveguide occurs in a TDD (Time Division duplex) wireless network, a downlink signal of a far-end base station still has high strength after being transmitted over an ultra-long distance of tens of kilometers or hundreds of kilometers, and a signal propagation delay exceeds a GP (Guard Period) length of an uplink timeslot and falls into an uplink subframe of a near-end base station, causing severe uplink interference, which is called far-end interference or atmospheric waveguide interference.
For the current TD-LTE (Time Division Long Term evolution) network, the existing implementation scheme is to detect the far-end interference by sending a special feature sequence, and after the far-end interference is detected, the far-end interference is avoided by automatically adjusting the GP length (adjusting the special subframe pairing), and the effect of avoiding the far-end interference by this scheme depends on the reciprocity of the far-end interference to a great extent, but no mature technology for evaluating the reciprocity of the far-end interference exists in the industry at present.
Disclosure of Invention
The invention provides a method and a device for evaluating far-end interference reciprocity, which are used for solving the problem that no mature technology for evaluating far-end interference reciprocity exists in the prior art.
In order to solve the above problem, the embodiment of the present invention is implemented as follows:
in a first aspect, an embodiment of the present invention provides a method for evaluating far-end interference reciprocity, including: acquiring the number of times of a first interference signal of a far-end interference signal which is received by a disturbed station within evaluation time and is sent by at least one disturbing station; acquiring the number of times of a second interference signal of a far-end interference signal sent by the interfered station in the evaluation time; for each interference station, sequentially acquiring the times of third interference signals, which are received by a target interference station within the evaluation time and are transmitted by the interfered station or each interference station except the remote interference signal transmitted by the target interference station; wherein the target perturbation station is subordinate to the at least one perturbation station; acquiring the number of times of a fourth interference signal of a far-end interference signal sent by each interference station within the evaluation time; and determining the far-end interference reciprocity rate between the interfered station and each interference applying station according to a preset algorithm according to the times of each first interference signal, the times of each second interference signal, the times of each third interference signal and the times of each fourth interference signal.
Preferably, the number of the perturbation stations is one, the far-end interference reciprocity rate includes a single-station far-end interference reciprocity rate, and the step of determining the far-end interference reciprocity rate between the perturbed station and each perturbation station according to a preset algorithm based on the number of times of each first interference signal, the number of times of each second interference signal, the number of times of each third interference signal, and the number of times of each fourth interference signal includes: and determining the single-station far-end interference reciprocity rate between the interfered station and the interfering station according to a first preset algorithm according to the first interference signal frequency, the second interference signal frequency, the third interference signal frequency and the fourth interference signal frequency.
Preferably, the number of the perturbation stations is one, the far-end interference reciprocity rate includes a single-station simplified far-end interference reciprocity rate, and the step of determining the far-end interference reciprocity rate between the perturbed station and each perturbation station according to a preset algorithm based on the number of times of each first interference signal, the number of times of each second interference signal, the number of times of each third interference signal, and the number of times of each fourth interference signal includes: and determining a single-station simplified far-end interference reciprocity rate between the interfered station and the interfering station according to a second preset algorithm according to the first interference signal frequency and the third interference signal frequency.
Preferably, the number of the perturbation stations is two or more, the far-end interference reciprocity rate includes a multi-station far-end interference reciprocity rate, and the step of determining the far-end interference reciprocity rate between the victim station and each of the perturbation stations according to a preset algorithm based on the number of times of each of the first interference signals, the number of times of each of the second interference signals, the number of times of each of the third interference signals, and the number of times of each of the fourth interference signals includes: determining a target far-end interference reciprocity rate between the interfered station and any two base stations with far-end interference in each interfering station according to a third preset algorithm according to the times of the first interference signals, the times of the second interference signals, the times of the third interference signals and the times of the fourth interference signals; and calculating the average value of each target far-end interference reciprocity rate, and taking the average value as the multi-station far-end interference reciprocity rate.
Preferably, the number of the interfering stations is two or more, the far-end interference reciprocity rate includes a multi-station simplified far-end interference reciprocity rate, and the step of determining the far-end interference reciprocity rate between the interfered station and each of the interfering stations according to a preset algorithm based on the number of times of each of the first interference signals, the number of times of each of the second interference signals, the number of times of each of the third interference signals, and the number of times of each of the fourth interference signals includes: determining the number of first base station pairs with unidirectional far-end interference and the number of second base station pairs with bidirectional far-end interference according to the number of times of each first interference signal and the number of times of each third interference signal and a third preset algorithm; and calculating the ratio of the number of the first base station pairs to the number of the second base station pairs, and taking the ratio as the multi-station simplified far-end interference reciprocity rate.
In a first aspect, an embodiment of the present invention further provides a device for evaluating far-end interference reciprocity, including: the first interference signal frequency acquisition module is used for acquiring the first interference signal frequency of a far-end interference signal received by the interfered station in the evaluation time and sent by at least one interference station; a second interference signal frequency acquisition module, configured to acquire a second interference signal frequency of a far-end interference signal sent by the victim station within the evaluation time; a third interference signal frequency obtaining module, configured to sequentially obtain, for each interference applying station, a third interference signal frequency of a remote interference signal received by a target interference applying station within the evaluation time and sent by the interfered station or each interference applying station except the target interference applying station; wherein the target perturbation station is subordinate to the at least one perturbation station; a fourth interference signal frequency acquisition module, configured to acquire a fourth interference signal frequency of a far-end interference signal sent by each interference applying station within the evaluation time; and the far-end interference reciprocity rate determining module is used for determining the far-end interference reciprocity rate between the interfered station and each interfering station according to a preset algorithm according to the times of each first interference signal, the times of each second interference signal, the times of each third interference signal and the times of each fourth interference signal.
Preferably, the number of the interference station is one, the far-end interference reciprocity rate includes a single-station far-end interference reciprocity rate, and the far-end interference reciprocity rate determining module includes: and the single-station far-end interference reciprocity rate determining submodule is used for determining the single-station far-end interference reciprocity rate between the interfered station and the interfering station according to a first preset algorithm according to the first interference signal frequency, the second interference signal frequency, the third interference signal frequency and the fourth interference signal frequency.
Preferably, the number of the interference site is one, the far-end interference reciprocity rate includes a single-site simplified far-end interference reciprocity rate, and the far-end interference reciprocity rate determining module includes: and the single-station simplified far-end interference reciprocity rate determining submodule is used for determining the single-station simplified far-end interference reciprocity rate between the interfered station and the interfering station according to the first interference signal frequency and the third interference signal frequency and a second preset algorithm.
Preferably, the number of the interference stations is two or more, the far-end interference reciprocity rate includes a multi-station far-end interference reciprocity rate, and the far-end interference reciprocity rate determining module includes: a target far-end interference reciprocity rate determining submodule, configured to determine, according to a third preset algorithm, a target far-end interference reciprocity rate between the interfered station and any two base stations in each interfering station where far-end interference exists, according to the number of times of each first interference signal, the number of times of each second interference signal, the number of times of each third interference signal, and the number of times of each fourth interference signal; and the multi-station far-end interference reciprocity rate determining submodule is used for calculating the average value of the target far-end interference reciprocity rates and taking the average value as the multi-station far-end interference reciprocity rate.
Preferably, the number of the interference stations is two or more, the far-end interference reciprocity rate includes a multi-station simplified far-end interference reciprocity rate, and the far-end interference reciprocity rate determining module includes: a base station pair number determining submodule, configured to determine, according to the number of times of each first interference signal and the number of times of each third interference signal, the number of first base station pairs having unidirectional far-end interference and the number of second base station pairs having bidirectional far-end interference according to a third preset algorithm; and the multi-station simplified far-end interference reciprocity rate determining submodule is used for calculating the ratio of the number of the first base station pairs to the number of the second base station pairs and taking the ratio as the multi-station simplified far-end interference reciprocity rate.
Compared with the prior art, the invention has the following advantages:
the embodiment of the invention provides a method and a device for evaluating far-end interference reciprocity, which are characterized in that the times of a first interference signal of a far-end interference signal received by a disturbed station in evaluation time and sent by at least one disturbing station are obtained, the times of a second interference signal of the far-end interference signal sent by the disturbed station in evaluation time are obtained, and the times of a third interference signal received by a target disturbing station in evaluation time and sent by the disturbed station or each disturbing station except the far-end interference signal sent by the target disturbing station are sequentially obtained aiming at each disturbing station, the target interference station belongs to at least one interference station, the number of times of a fourth interference signal of a far-end interference signal sent by each interference station in evaluation time is obtained, and the far-end interference reciprocity rate between the interfered station and each interference station is determined according to a preset algorithm according to the number of times of each first interference signal, the number of times of each second interference signal, the number of times of each third interference signal and the number of times of each fourth interference signal. The embodiment of the invention initially provides a far-end interference reciprocity evaluation method and a corresponding calculation method thereof, and quantitatively analyzes the far-end interference reciprocity of the existing network, thereby providing a reliable basis for subsequently avoiding the far-end interference.
Drawings
Fig. 1 is a flowchart illustrating steps of a method for evaluating far-end interference reciprocity according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating remote interference between two base stations according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating remote interference between two base stations according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating remote interference between three base stations according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram illustrating a remote interference reciprocity evaluating apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
Referring to fig. 1, a flowchart of steps of a far-end interference reciprocity assessment method provided in an embodiment of the present invention is shown, where the far-end interference reciprocity assessment method may be applied to a victim, and specifically may include the following steps:
step 101: and acquiring the number of times of a first interference signal of a far-end interference signal which is received by the interfered station in the evaluation time and is sent by at least one interference station.
In the embodiment of the present invention, the interfered station may be a base station interfering station such as a macro base station, a micro base station, a radio remote base station, or the like, or may also be a base station such as a macro base station, a micro base station, a radio remote base station, or the like, and details are not repeated in the following process.
The number of base stations causing far-end signal interference to the interfered station may be one or multiple, and specifically, may be determined according to an actual situation, which is not limited in the embodiment of the present invention.
The far-end interference reciprocity refers to the bidirectional degree that the interfered station and the interfering station can mutually receive the far-end interference signal of the opposite end in a certain time period, and the far-end interference reciprocity rate is adopted for quantitative evaluation, namely the embodiment of the invention adopts the far-end interference reciprocity rate to evaluate the far-end interference reciprocity rate between the interfered station and the interfering station.
The evaluation time refers to the time period for evaluating the reciprocity of the specific far-end interference, and the evaluation time can be 1 hour, 12 hours or 24 hours, etc.
The evaluation time may be preset by the developer according to the actual situation, and the specific value of the evaluation time is not limited in the embodiments of the present invention.
The number of times of the first interference signal refers to the number of times of the remote interference signal which is received by the interfered station and is sent by at least one interfering station in the evaluation time.
For example, referring to fig. 2, a schematic diagram of the remote interference between two base stations provided by the embodiment of the present invention is shown, as shown in fig. 2, eNB1 represents a victim station, eNB2 represents an offender station, and in fig. 2, 1 and 2 represent the remote interference signal sent by eNB1 and received by eNB2, 3 is the remote interference signal sent by eNB2 and received by eNB1, and as can be seen from the content shown in fig. 2, the number of times of the remote interference signal received by eNB1 is 1.
It should be understood that the above examples are only examples for better understanding of the technical solutions of the embodiments of the present invention, and are not to be taken as the only limitation of the embodiments of the present invention.
After acquiring the number of times of the first interference signal of the far-end interference signal received by the victim station within the evaluation time and transmitted by the at least one disturber station, step 102 is executed.
Step 102: and acquiring the second interference signal times of the far-end interference signal sent by the interfered station in the evaluation time.
The second number of interference signals refers to the number of far-end interference signals transmitted by the victim station within the evaluation time, for example, as shown in fig. 2, the number of far-end interference signals transmitted by the eNB1 is 2, i.e., numbers 1 and 2 shown in fig. 2, and the number of far-end interference signals transmitted by the eNB2 is 1, i.e., number 3 shown in fig. 2.
It should be understood that the above examples are only examples for better understanding of the technical solutions of the embodiments of the present invention, and are not to be taken as the only limitation of the embodiments of the present invention.
It can be understood that, in the case that there is one interfering station, the number of far-end interference signals sent by the interfered station in the evaluation time may be the same as or different from the number of far-end interference signals received by the interfering station in the evaluation time, and specifically, may be determined according to an actual receiving situation of the far-end interference signals, which is not limited in this embodiment of the present invention.
After acquiring the second interference signal number of the far-end interference signal sent by the interfered station in the evaluation time, step 103 is executed.
Step 103: and sequentially acquiring the times of third interference signals, which are received by the disturbing stations within the evaluation time and are transmitted by the interfered station or each disturbing station except the target disturbing station, of the far-end interference signals aiming at each disturbing station.
The third interference signal frequency refers to the frequency of the remote interference signal received by each interference station within the evaluation time and sent by the interfered station or the interference station except the target interference station.
The target disturbance station refers to any one disturbance station in at least one disturbance station, for example, the disturbance station includes a disturbance station a, a disturbance station B, and a disturbance station C, and then the disturbance station a may be selected as the target disturbance station, the disturbance station B may also be selected as the target disturbance station, and the disturbance station C may also be selected as the target disturbance station, which is not limited in this embodiment of the present invention.
In the case that the number of interfering stations is one, referring to fig. 3, a schematic diagram of remote interference between two base stations according to an embodiment of the present invention is shown, as shown in fig. 3, there is mutual remote interference between two base stations, where eNB1 is a victim station, eNB2 is an interfering station, and the number of times that eNB2 receives a remote interference signal transmitted by eNB1 is 1.
In the case that the number of interfering stations is multiple, referring to fig. 4, a schematic diagram of remote interference between three base stations according to an embodiment of the present invention is shown, as shown in fig. 4, the three base stations have mutual remote interference, where eNB1 is a victim station, eNB2 and eNB3 are interfering stations, the number of times that eNB2 receives a remote interference signal transmitted by eNB1 is 1, the number of times that eNB3 receives a remote interference signal transmitted by eNB1 is 1, the number of times that eNB2 receives a remote interference signal transmitted by eNB3 is 1, and the number of times that eNB3 receives a remote interference signal transmitted by eNB2 is 1.
It should be understood that the above examples are only examples for better understanding of the technical solutions of the embodiments of the present invention, and are not to be taken as the only limitation of the embodiments of the present invention.
And for each interference station, sequentially acquiring the number of times of the third interference signal of the far-end interference signal received by each interference station within the evaluation time and sent by the interfered station or the target interference station in each interference station, and then executing step 104.
Step 104: and acquiring the fourth interference signal times of the far-end interference signals sent by each interference applying station in the evaluation time.
The fourth interference signal number refers to the number of far-end interference signals sent by each interfering station within the evaluation time, for example, as shown in fig. 2, eNB2 is the interfering station, the number of far-end interference signals sent by eNB2 is 2, that is, numbers 3 and 4, that is, the number of fourth interference signals is 2. As shown in fig. 4, eNB2 and eNB3 are interfering stations, and the number of far-end interference signals transmitted by eNB2 is 2 times, and the number of far-end interference signals transmitted by eNB3 is 1 time.
It should be understood that the above examples are only examples for better understanding of the technical solutions of the embodiments of the present invention, and are not to be taken as the only limitation of the embodiments of the present invention.
After acquiring the fourth interference signal number of the far-end interference signal sent by each interference station in the evaluation time, step 105 is executed.
Step 105: and determining the far-end interference reciprocity rate between the interfered station and each interference applying station according to a preset algorithm according to the times of each first interference signal, the times of each second interference signal, the times of each third interference signal and the times of each fourth interference signal.
After the number of times of each first interference signal, the number of times of each second interference signal, the number of times of each third interference signal, and the number of times of each fourth interference signal are obtained, the far-end interference reciprocity rate between the interfered station and each interfering station can be determined according to a preset algorithm.
In the embodiment of the present invention, the far-end interference reciprocity rate may be divided into a far-end interference reciprocity rate between single stations and a far-end interference reciprocity rate between multiple stations, and specifically, a method for calculating the far-end interference reciprocity rate between single stations and the far-end interference reciprocity rate between multiple stations will be described in detail below with reference to the following preferred embodiments.
The remote-end interference reciprocity rates between the single stations include a single-station remote-end interference reciprocity rate and a single-station simplified remote-end interference reciprocity rate, and first, the following detailed description is made on the manner of acquiring the single-station remote-end interference reciprocity rate in combination with the following preferred embodiments.
In a preferred embodiment of the present invention, the number of the interference applying stations is one, the far-end interference reciprocity rate includes a single-station far-end interference reciprocity rate, and the step 105 may include:
substep A1: and determining the single-station far-end interference reciprocity rate between the interfered station and the interfering station according to a first preset algorithm according to the first interference signal frequency, the second interference signal frequency, the third interference signal frequency and the fourth interference signal frequency.
In the embodiment of the present invention, after the first interference signal frequency, the second interference signal frequency, the third interference signal frequency, and the fourth interference signal frequency are obtained, a single-station far-end interference reciprocity rate may be determined according to a first preset algorithm, where the single-station far-end interference reciprocity rate refers to an accurate single-station far-end reciprocity rate. Specifically, the first preset algorithm may be as shown in the following equation (1):
in the above formula (1), μ is the reciprocity rate of the interference at the remote end of the single station,
is the number of times of the third interfering signal,
as the number of times of the fourth interfering signal,
the number of times of the first interference signal,
the second interference signal number.
After the first interference signal number, the second interference signal number, the third interference signal number, and the fourth interference signal number are obtained, the first interference signal number, the second interference signal number, the third interference signal number, and the fourth interference signal number may be substituted into the above formula (1), so that the single-station far-end interference reciprocity rate may be calculated, for example, as shown in fig. 3, if the obtained single-station far-end interference reciprocity rate is calculated according to the above formula for calculating the reciprocity rate between two base stations, the single-station far-end interference reciprocity rate between the two base stations may be calculated as (3 + 1+2 x 1)/(2 x 3 x 2) × 41.7%.
It should be understood that the above examples are only examples for better understanding of the technical solutions of the embodiments of the present invention, and are not to be taken as the only limitation of the embodiments of the present invention.
Next, the manner of acquiring the simplified far-end interference reciprocity rate of the single station is described in detail below with reference to the following preferred embodiments.
In another preferred embodiment of the present invention, the number of the interfering stations is one, the far-end interference reciprocity rate includes a single-station simplified far-end interference reciprocity rate, and the step 105 may include:
substep B1: and determining a single-station simplified far-end interference reciprocity rate between the interfered station and the interfering station according to a second preset algorithm according to the first interference signal frequency and the third interference signal frequency.
In the embodiment of the present invention, after obtaining the first interference signal number and the second interference number, a single-station simplified far-end interference reciprocity rate of an interfering station and a victim station may be determined according to a second preset algorithm, and specifically, the second preset algorithm may be as shown in the following formula (2):
in the above formula (2), μ1The remote interference reciprocity rate is simplified for a single station,
the number of times of the first interference signal,
the third interfering signal number.
The single station simplifies the far-end interference reciprocity rate, namely simplifies the calculated value of the far-end interference reciprocity rate between the single stations, and the single station refers to two base stations, namely an interfering station and a disturbed station.
That is, the simplified remote interference reciprocity rate of the single station is equal to the minimum value of the first interfering signal frequency and the third interfering signal frequency/the maximum value of the first interfering signal frequency and the third interfering signal frequency, for example, when the first interfering signal frequency is 3 and the third interfering signal frequency is 4, the simplified remote interference reciprocity rate of the single station is equal to 75%.
It should be understood that the above examples are only examples for better understanding of the technical solutions of the embodiments of the present invention, and are not to be taken as the only limitation of the embodiments of the present invention.
The far-end interference reciprocity rates between the multiple stations include a multi-station far-end interference reciprocity rate and a multi-station simplified far-end interference reciprocity rate, and first, the following detailed description is made on the acquisition mode of the multi-station far-end interference reciprocity rate in combination with the following preferred embodiments.
In another preferred embodiment of the present invention, the number of the interference applying stations is two or more, the far-end interference reciprocity rate includes a multi-station far-end interference reciprocity rate, and the step 105 may include:
substep C1: determining a target far-end interference reciprocity rate between the interfered station and any two base stations with far-end interference in each interfering station according to a third preset algorithm according to the times of the first interference signals, the times of the second interference signals, the times of the third interference signals and the times of the fourth interference signals;
substep C2: and calculating the average value of each target far-end interference reciprocity rate, and taking the average value as the multi-station far-end interference reciprocity rate.
In the embodiment of the present invention, the number of the scrambling stations may be two or more, such as 3, 5, or 8, and the like, which is not limited in the embodiment of the present invention.
The target far-end interference reciprocity rate refers to the far-end interference reciprocity rate between any two base stations with far-end interference in the interfered station and each interfering station.
After obtaining the times of each first interference signal, the times of each second interference signal, the times of each third interference signal, and the times of each fourth interference signal, the target far-end interference reciprocity rate between any two base stations in the interfered station and each interfering station where far-end interference exists may be calculated according to the times of each first interference signal, the times of each second interference signal, the times of each third interference signal, and the times of each fourth interference signal.
Specifically, the method for calculating the target far-end interference reciprocity rate may be performed with reference to the method for calculating the single-station far-end interference reciprocity rate described in the above example, and the embodiment of the present invention is not described in detail herein.
After obtaining the multiple target far-end interference reciprocity rates, an average value of the multiple target far-end interference reciprocity rates may be calculated, and the average value is taken as the multi-station far-end interference reciprocity rate.
After obtaining a plurality of target far-end interference reciprocity rates, calculating to obtain a first average value, which can be specifically expressed by referring to the following formula (3):
in the above formula (3), ρ is an average value, i.e. the multi-station far-end interference reciprocity rate, μiIs the far-end interference reciprocity rate between the ith base station pair. N is the number of base station pairs having remote interference with each other, and if the number of base stations having remote interference with each other is N, N is N × N (N-1)/2.
After obtaining the plurality of target far-end interference reciprocity rates, the plurality of target far-end interference reciprocity rates may be substituted into the above equation (3), so that the first far-end interference reciprocity rate average value may be calculated. For example, referring to fig. 4, a schematic diagram of remote interference between three base stations according to an embodiment of the present invention is shown, as shown in fig. 4, mutual remote interference exists between multiple base stations, where base station 1 detects a remote interference signal sent by base station 2, base station 2 detects remote interference signals sent by base stations 1 and 3, and base station 3 detects remote interference signals sent by base stations 1 and 2. According to the above formula for calculating the reciprocity rate between multiple base stations, the reciprocity rate of the multi-station far-end interference between the base stations can be calculated (simplified calculation method) as follows: ρ ═ (100% +0+ 100%)/3 ═ 66.7%.
Of course, the multi-station far-end interference reciprocity rate can also be calculated by referring to the following formula (4):
in the above formula (4), ρ is an average value, i.e. the multi-station far-end interference reciprocity rate,
and simplifying the reciprocity rate of the far-end interference for the target between the ith base station pair, wherein N is the number of base station pairs with the far-end interference, and N is N (N-1)/2 if the number of base stations with the far-end interference is N.
After obtaining the target simplified far-end interference reciprocity rates, the target simplified far-end interference reciprocity rates may be substituted into the above formula (4), so that the simplified far-end interference reciprocity rate average may be calculated as the multi-station far-end interference reciprocity rate.
Next, the manner of acquiring the simplified far-end interference reciprocity rate of the multi-station will be described in detail with reference to the following preferred embodiments.
In a preferred embodiment of the present invention, the number of the interference applying stations is two or more, the far-end interference reciprocity rate includes a multi-station simplified far-end interference reciprocity rate, and the step 105 may include:
substep D1: determining the number of first base station pairs with unidirectional far-end interference and the number of second base station pairs with bidirectional far-end interference according to the number of times of each first interference signal and the number of times of each third interference signal and a third preset algorithm;
substep D2: and calculating the ratio of the number of the first base station pairs to the number of the second base station pairs, and taking the ratio as the multi-station simplified far-end interference reciprocity rate.
In the embodiment of the invention, the multi-station simplified far-end interference reciprocity rate refers to an average value of the simplified far-end interference reciprocity rates.
After the number of the first base station pairs and the number of the second base station pairs are obtained, the average value of the multi-station simplified far-end interference reciprocity rates can be calculated. Specifically, the detailed description is made in conjunction with the following formula (5).
In the above formula (5), ρ*Is the second far-end interference reciprocity ratio average value, ndIs the number of the first base station pair, ndbThe number of the second base station pairs.
After the number of the first base station pairs and the number of the second base station pairs are obtained, the number of the first base station pairs and the number of the second base station pairs can be substituted into the formula (5), so that an average value of the multi-station simplified far-end interference reciprocity rates, namely the multi-station simplified far-end interference reciprocity rates, is obtained through calculation.
Of course, when the simplified far-end interference reciprocity rates between multiple base stations are calculated according to the number of the base stations, that is, after the simplified far-end interference reciprocity rates are calculated according to the number of the base stations, the method may be combined with a location, such as a county-level city, and the like, and specifically, the method may be determined according to an actual situation, and the embodiment of the present invention is not limited thereto.
The method for evaluating the reciprocity of the far-end interference provided by the embodiment of the invention obtains the times of a first interference signal of a far-end interference signal which is received by a disturbed station in evaluation time and is sent by at least one disturbing station, obtains the times of a second interference signal of the far-end interference signal which is sent by the disturbed station in evaluation time, and sequentially obtains the times of a third interference signal which is received by a target disturbing station in evaluation time and is sent by the disturbed station or each disturbing station except the target disturbing station aiming at each disturbing station, the target interference station belongs to at least one interference station, the number of times of a fourth interference signal of a far-end interference signal sent by each interference station in evaluation time is obtained, and the far-end interference reciprocity rate between the interfered station and each interference station is determined according to a preset algorithm according to the number of times of each first interference signal, the number of times of each second interference signal, the number of times of each third interference signal and the number of times of each fourth interference signal. The embodiment of the invention initially provides a far-end interference reciprocity evaluation method and a corresponding calculation method thereof, and quantitatively analyzes the far-end interference reciprocity of the existing network, thereby providing a reliable basis for subsequently avoiding the far-end interference.
Example two
Referring to fig. 5, a schematic structural diagram of a far-end interference reciprocity evaluating apparatus provided in an embodiment of the present invention is shown, which specifically includes:
a first interference signal number obtaining module 210, configured to obtain a first interference signal number of a far-end interference signal received by a victim station within an evaluation time and sent by at least one disturber station; a second interference signal number obtaining module 220, configured to obtain a second interference signal number of a far-end interference signal sent by the victim station within the evaluation time; a third interference signal number obtaining module 230, configured to sequentially obtain, for each interference applying station, a third interference signal number of a remote interference signal received by a target interference applying station within the evaluation time and sent by the interfered station or each interference applying station except the target interference applying station; wherein the target perturbation station is subordinate to the at least one perturbation station; a fourth interference signal frequency obtaining module 240, configured to obtain a fourth interference signal frequency of a far-end interference signal sent by each interference applying station within the evaluation time; a far-end interference reciprocity rate determining module 250, configured to determine, according to the number of times of each first interference signal, the number of times of each second interference signal, the number of times of each third interference signal, and the number of times of each fourth interference signal, a far-end interference reciprocity rate between the interfered station and each interfering station according to a preset algorithm.
Preferably, the number of the interference site is one, the far-end interference reciprocity rate includes a single-site far-end interference reciprocity rate, and the far-end interference reciprocity rate determining module 250 includes: and the single-station far-end interference reciprocity rate determining submodule is used for determining the single-station far-end interference reciprocity rate between the interfered station and the interfering station according to a first preset algorithm according to the first interference signal frequency, the second interference signal frequency, the third interference signal frequency and the fourth interference signal frequency.
Preferably, the number of the interfering stations is one, the far-end interference reciprocity rate includes a single-station simplified far-end interference reciprocity rate, and the far-end interference reciprocity rate determining module 250 includes: and the single-station simplified far-end interference reciprocity rate determining submodule is used for determining the single-station simplified far-end interference reciprocity rate between the interfered station and the interfering station according to the first interference signal frequency and the third interference signal frequency and a second preset algorithm.
Preferably, the number of the interference stations is two or more, the far-end interference reciprocity rate includes a multi-station far-end interference reciprocity rate, and the far-end interference reciprocity rate determining module 250 includes: a target far-end interference reciprocity rate determining submodule, configured to determine, according to a third preset algorithm, a target far-end interference reciprocity rate between the victim station and each of the victim stations according to the number of times of each of the first interference signals, the number of times of each of the second interference signals, the number of times of each of the third interference signals, and the number of times of each of the fourth interference signals; and the multi-station far-end interference reciprocity rate determining submodule is used for calculating the average value of the target far-end interference reciprocity rates and taking the average value as the multi-station far-end interference reciprocity rate.
Preferably, the number of the interfering stations is two or more, the far-end interference reciprocity rate includes a multi-station simplified far-end interference reciprocity rate, and the far-end interference reciprocity rate determining module 250 includes: a base station pair number determining submodule, configured to determine, according to the number of times of each first interference signal and the number of times of each third interference signal, the number of first base station pairs having unidirectional far-end interference and the number of second base station pairs having bidirectional far-end interference according to a third preset algorithm; and the multi-station simplified far-end interference reciprocity rate determining submodule is used for calculating the ratio of the number of the first base station pairs to the number of the second base station pairs and taking the ratio as the multi-station simplified far-end interference reciprocity rate.
The far-end interference reciprocity evaluating device provided by the embodiment of the invention obtains the times of a first interference signal of a far-end interference signal which is received by a disturbed station in an evaluating time and is sent by at least one disturbing station, obtains the times of a second interference signal of the far-end interference signal which is sent by the disturbed station in the evaluating time, sequentially obtains the times of a third interference signal which is received by a target disturbing station in the evaluating time and is sent by the disturbed station or each disturbing station except the target disturbing station aiming at each disturbing station, the target interference station belongs to at least one interference station, the number of times of a fourth interference signal of a far-end interference signal sent by each interference station in evaluation time is obtained, and the far-end interference reciprocity rate between the interfered station and each interference station is determined according to a preset algorithm according to the number of times of each first interference signal, the number of times of each second interference signal, the number of times of each third interference signal and the number of times of each fourth interference signal. The embodiment of the invention initially provides a far-end interference reciprocity evaluation method and a corresponding calculation method thereof, and quantitatively analyzes the far-end interference reciprocity of the existing network, thereby providing a reliable basis for subsequently avoiding the far-end interference.
While, for purposes of simplicity of explanation, the foregoing method embodiments have been described as a series of acts or combination of acts, it will be appreciated by those skilled in the art that the present invention is not limited by the illustrated ordering of acts, as some steps may occur in other orders or concurrently with other steps in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The method and the device for evaluating far-end interference reciprocity provided by the invention are introduced in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. A method for evaluating far-end interference reciprocity, comprising:
acquiring the number of times of a first interference signal of a far-end interference signal which is received by a disturbed station within evaluation time and is sent by at least one disturbing station;
acquiring the number of times of a second interference signal of a far-end interference signal sent by the interfered station in the evaluation time;
for each interference station, sequentially acquiring the times of third interference signals, which are received by a target interference station within the evaluation time and are transmitted by the interfered station or each interference station except the remote interference signal transmitted by the target interference station; wherein the target perturbation station is subordinate to the at least one perturbation station;
acquiring the number of times of a fourth interference signal of a far-end interference signal sent by each interference station within the evaluation time;
determining the far-end interference reciprocity rate between the interfered station and each interference applying station according to a preset algorithm according to the times of each first interference signal, the times of each second interference signal, the times of each third interference signal and the times of each fourth interference signal;
when the number of the perturbation stations is one, and the far-end interference reciprocity rate includes a single-station far-end interference reciprocity rate, the step of determining the far-end interference reciprocity rate between the victim station and each of the perturbation stations according to a preset algorithm according to the number of times of each of the first interference signals, the number of times of each of the second interference signals, the number of times of each of the third interference signals, and the number of times of each of the fourth interference signals includes:
determining a single-station far-end interference reciprocity rate between the interfered station and the interfering station according to a first preset algorithm according to the first interference signal times, the second interference signal times, the third interference signal times and the fourth interference signal times;
the first preset algorithm comprises:
wherein mu is the single-station far-end interference reciprocity rate,
is the number of times of the third interfering signal,
as the number of times of the fourth interfering signal,
the number of times of the first interference signal,
the second interference signal number.
2. The method according to claim 1, wherein in a case where the number of the aggressor stations is one and the far-end interference reciprocity rate includes a single-station simplified far-end interference reciprocity rate, the step of determining the far-end interference reciprocity rate between the victim station and each of the aggressor stations according to a preset algorithm based on each of the number of the first interference signals, each of the number of the second interference signals, each of the number of the third interference signals, and each of the number of the fourth interference signals includes:
and determining a single-station simplified far-end interference reciprocity rate between the interfered station and the interfering station according to a second preset algorithm according to the first interference signal frequency and the third interference signal frequency.
3. The method according to claim 1, wherein in a case that the number of the interfering stations is two or more and the far-end interference reciprocity ratio includes a multi-station far-end interference reciprocity ratio, the step of determining the far-end interference reciprocity ratio between the interfered station and each of the interfering stations according to a preset algorithm based on each of the number of the first interfering signals, each of the number of the second interfering signals, each of the number of the third interfering signals, and each of the number of the fourth interfering signals comprises:
determining a target far-end interference reciprocity rate between the interfered station and any two base stations with far-end interference in each interfering station according to a third preset algorithm according to the times of the first interference signals, the times of the second interference signals, the times of the third interference signals and the times of the fourth interference signals;
and calculating the average value of each target far-end interference reciprocity rate, and taking the average value as the multi-station far-end interference reciprocity rate.
4. The method of claim 1, wherein in a case that the number of the aggressor stations is two or more and the far-end interference reciprocity rate includes a multi-station simplified far-end interference reciprocity rate, the step of determining the far-end interference reciprocity rate between the victim station and each of the aggressor stations according to a predetermined algorithm based on the number of times of each of the first interfering signals, the number of times of each of the second interfering signals, the number of times of each of the third interfering signals, and the number of times of each of the fourth interfering signals comprises:
determining the number of first base station pairs with unidirectional far-end interference and the number of second base station pairs with bidirectional far-end interference according to the number of times of each first interference signal and the number of times of each third interference signal and a third preset algorithm;
and calculating the ratio of the number of the first base station pairs to the number of the second base station pairs, and taking the ratio as the multi-station simplified far-end interference reciprocity rate.
5. A remote interference reciprocity evaluating apparatus, comprising:
the first interference signal frequency acquisition module is used for acquiring the first interference signal frequency of a far-end interference signal received by the interfered station in the evaluation time and sent by at least one interference station;
a second interference signal frequency acquisition module, configured to acquire a second interference signal frequency of a far-end interference signal sent by the victim station within the evaluation time;
a third interference signal frequency obtaining module, configured to sequentially obtain, for each interference applying station, a third interference signal frequency of a remote interference signal received by a target interference applying station within the evaluation time and sent by the interfered station or each interference applying station except the target interference applying station; wherein the target perturbation station is subordinate to the at least one perturbation station;
a fourth interference signal frequency acquisition module, configured to acquire a fourth interference signal frequency of a far-end interference signal sent by each interference applying station within the evaluation time;
a far-end interference reciprocity rate determining module, configured to determine, according to a preset algorithm, a far-end interference reciprocity rate between the interfered station and each interfering station according to the number of times of each first interference signal, the number of times of each second interference signal, the number of times of each third interference signal, and the number of times of each fourth interference signal;
the number of the interference stations is one, the far-end interference reciprocity rate comprises a single-station far-end interference reciprocity rate, and the far-end interference reciprocity rate determining module comprises:
the single-station far-end interference reciprocity rate determining submodule is used for determining the single-station far-end interference reciprocity rate between the interfered station and the interfering station according to a first preset algorithm according to the first interference signal times, the second interference signal times, the third interference signal times and the fourth interference signal times;
the first preset algorithm comprises;
wherein mu is the single-station far-end interference reciprocity rate,
is the number of times of the third interfering signal,
as the number of times of the fourth interfering signal,
the number of times of the first interference signal,
the second interference signal number.
6. The apparatus of claim 5, wherein the number of interfering stations is one, wherein the far-end interference reciprocity rate comprises a single-station simplified far-end interference reciprocity rate, and wherein the far-end interference reciprocity rate determining module comprises:
and the single-station simplified far-end interference reciprocity rate determining submodule is used for determining the single-station simplified far-end interference reciprocity rate between the interfered station and the interfering station according to the first interference signal frequency and the third interference signal frequency and a second preset algorithm.
7. The apparatus of claim 5, wherein the number of interfering stations is two or more, the far-end interference reciprocity rate comprises a multi-station far-end interference reciprocity rate, and the far-end interference reciprocity rate determining module comprises:
a target far-end interference reciprocity rate determining submodule, configured to determine, according to a third preset algorithm, a target far-end interference reciprocity rate between the interfered station and any two base stations in each interfering station where far-end interference exists, according to the number of times of each first interference signal, the number of times of each second interference signal, the number of times of each third interference signal, and the number of times of each fourth interference signal;
and the multi-station far-end interference reciprocity rate determining submodule is used for calculating the average value of the target far-end interference reciprocity rates and taking the average value as the multi-station far-end interference reciprocity rate.
8. The apparatus of claim 5, wherein the number of interfering stations is two or more, the far-end interference reciprocity rate comprises a multi-station simplified far-end interference reciprocity rate, and the far-end interference reciprocity rate determining module comprises:
a base station pair number determining submodule, configured to determine, according to the number of times of each first interference signal and the number of times of each third interference signal, the number of first base station pairs having unidirectional far-end interference and the number of second base station pairs having bidirectional far-end interference according to a third preset algorithm;
and the multi-station simplified far-end interference reciprocity rate determining submodule is used for calculating the ratio of the number of the first base station pairs to the number of the second base station pairs and taking the ratio as the multi-station simplified far-end interference reciprocity rate.
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