CN106559816A - Area interference detection method and device - Google Patents

Abstract

The present invention provides a cell interference detection method and device, wherein the method includes: receiving a detection task, wherein the detection task at least carries the cell identity of the cell to be detected; acquiring the cell identity indicated by the cell identity to be detected A plurality of frequency ranges covered by the antenna where the cell is located; acquiring the interference data of the cell to be detected within the plurality of sub-frequency ranges constituting each of the frequency ranges. The invention solves the problem of low detection efficiency in the related art, and further achieves the effect of improving the detection efficiency.

Description

Cell interference detection method and device

technical field

The present invention relates to the communication field, in particular to a cell interference detection method and device.

Background technique

In communication equipment, uplink interference is a very critical issue that affects equipment stability, user connection rate and service quality. Therefore, how to quickly and conveniently locate the interference location of the cell is a demand that many operators and after-sales maintenance are very concerned about.

Uplink interference may have in-band interference and out-of-band interference at the same time. Among them, the in-band interference locates the interference in the coverage area of the cell, and the out-of-band refers to the coverage area of the antenna of the cell. At present, when performing uplink interference detection for the out-of-cell area, due to the large coverage area, it often takes a lot of detection time, which leads to the problem of low detection efficiency.

In view of the above problems, the current prior art has not yet proposed an effective solution.

Contents of the invention

The invention provides a cell interference detection method and device to at least solve the problem of low detection efficiency in the related art.

According to one aspect of the present invention, a method for detecting cell interference is provided, including: receiving a detection task, wherein the detection task at least carries the cell identifier of the cell to be detected; acquiring the antenna where the cell to be detected indicated by the cell identifier is located A plurality of frequency band ranges covered; acquiring the interference data of the cell to be detected within the plurality of sub-frequency band ranges constituting each of the frequency band ranges.

Optionally, the acquisition of multiple frequency ranges covered by the antenna of the cell to be detected indicated by the cell identifier includes: searching for a plurality of uplink antenna ports corresponding to the antenna where the cell to be detected is located according to the cell identifier; obtaining The aforementioned frequency range corresponding to each of the aforementioned uplink antenna ports.

Optionally, the acquiring the interference data of the cell to be detected in the plurality of sub-frequency ranges constituting each of the frequency ranges includes: respectively acquiring the plurality of sub-frequency ranges on each of the frequency ranges according to the cell bandwidth of the cell to be detected ; Obtain the above interference data at the center frequency point of the above sub-frequency range respectively.

Optionally, the above-mentioned frequency band range includes: a start frequency point and a stop frequency point, and the above-mentioned acquisition of the above-mentioned multiple sub-frequency band ranges on each of the above-mentioned frequency band ranges according to the cell bandwidth of the above-mentioned cell to be detected includes: The center frequency point is used as the current center frequency point of the current sub-band range, and the following steps are performed until the above-mentioned stop frequency point is reached. The initial value of the above-mentioned current center frequency point is the sum of one-half of the above-mentioned cell bandwidth and the above-mentioned start frequency point : Judging whether the end frequency point of the above-mentioned current sub-frequency range reaches the above-mentioned end frequency point, wherein the above-mentioned end frequency point is the sum of one-half of the above-mentioned cell bandwidth and the above-mentioned current center frequency point; if the end frequency point of the above-mentioned current sub-frequency range range If the frequency point does not reach the above-mentioned termination frequency point, the above-mentioned current sub-frequency range ((f _i -C/2), (f _i +C/2)) is obtained, wherein the above-mentioned current center frequency point f of the above-mentioned current sub-frequency range range _i includes: f _i =f _i-1 +C, wherein the above f _i is the center frequency point of the above-mentioned current sub-frequency range, and the above-mentioned f _i-1 is the center frequency point of the previous sub-frequency range of the above-mentioned current sub-frequency range , the above-mentioned C is the cell bandwidth of the above-mentioned to-be-detected cell; if the end frequency point of the above-mentioned current sub-frequency range reaches the above-mentioned end frequency point, then obtain the above-mentioned current sub-frequency range ((f _i -C/2), (f _i +C /2)), wherein, the above-mentioned current center frequency point f _i of the above-mentioned current sub-frequency range includes: f _i =BC/2, wherein the above-mentioned f _i is the center frequency point of the above-mentioned current sub-frequency range, and the above-mentioned B is the above-mentioned frequency band The above-mentioned termination frequency points in the range, and the above-mentioned C is the cell bandwidth of the above-mentioned cell to be detected.

Optionally, the acquiring the interference data at the center frequency points of the sub-frequency range includes: acquiring the interference data on the pre-configured target uplink subframe at every predetermined transmission interval at the center frequency point.

Optionally, after acquiring the interference data of the cell to be detected in the plurality of sub-frequency ranges constituting each of the frequency band ranges, it further includes: when the reporting time indicated by the reporting period arrives, the cell to be detected in each The maximum value and the average value of the interference data detected on the target uplink subframe of the radio bearer are reported as the reported interference data.

Optionally, the above interference data includes: an interference NI value of the uplink subframe.

According to another aspect of the present invention, a device for detecting cell interference is provided, including: a receiving unit, configured to receive a detection task, wherein the detection task at least carries a cell identifier of a cell to be detected; a first obtaining unit, configured to Obtain multiple frequency ranges covered by the antennas of the cells to be detected indicated by the cell identifiers; the second obtaining unit is configured to obtain the interference data of the cells to be detected within the multiple sub-frequency ranges constituting each of the frequency ranges.

Optionally, the above-mentioned first obtaining unit includes: a search module, configured to search for a plurality of uplink antenna ports corresponding to the above-mentioned antenna where the above-mentioned cell to be detected is located according to the above-mentioned cell identifier; The above frequency range corresponding to the uplink antenna port.

Optionally, the above-mentioned second obtaining unit includes: a second obtaining module, configured to obtain the above-mentioned multiple sub-frequency ranges on each of the above-mentioned frequency ranges according to the cell bandwidth of the above-mentioned cell to be detected; The above-mentioned interference data is acquired at the central frequency point of the above-mentioned sub-frequency range.

Optionally, the above-mentioned frequency band range includes: a start frequency point and an end frequency point, and the above-mentioned second acquisition module includes: a processing sub-module for using the center frequency point of each sub-frequency band range as the current center frequency point of the current sub-frequency band range Point, perform the following steps until the above-mentioned end frequency point is reached, the initial value of the above-mentioned current center frequency point is the sum of one-half of the above-mentioned cell bandwidth and the above-mentioned start frequency point: determine whether the end frequency point of the above-mentioned current sub-frequency range is Reach the above-mentioned end frequency point, wherein the above-mentioned end frequency point is the sum of one-half of the above-mentioned cell bandwidth and the above-mentioned current center frequency point; if the end frequency point of the above-mentioned current sub-frequency range does not reach the above-mentioned end frequency point, then obtain the above-mentioned The current sub-band range ((f _i -C/2), (f _i +C/2)), wherein, the above-mentioned current center frequency f _i of the above-mentioned current sub-band range includes: f _i =f _i-1 +C , wherein, the above-mentioned f _i is the center frequency point of the above-mentioned current sub-frequency range, the above-mentioned f _i-1 is the center frequency point of the previous sub-frequency range of the above-mentioned current sub-frequency range, and the above-mentioned C is the cell bandwidth of the above-mentioned cell to be detected; If the end frequency point of the above-mentioned current sub-frequency range reaches the above-mentioned end frequency point, the above-mentioned current sub-frequency range ((f _i -C/2), (f _i +C/2)) is obtained, wherein the above-mentioned current sub-frequency range The above-mentioned current center frequency points f _i include: f _i =BC/2, wherein, the above-mentioned f _i is the center frequency point of the above-mentioned current sub-frequency range, the above-mentioned B is the above-mentioned end frequency point of the above-mentioned frequency range, and the above-mentioned C is the above-mentioned to-be Detect the cell bandwidth of the cell.

Optionally, the above-mentioned third obtaining module includes: an obtaining sub-module, configured to obtain the above-mentioned interference data on the pre-configured target uplink subframe every predetermined transmission interval at the above-mentioned center frequency point.

Optionally, it also includes: a reporting unit, configured to, after obtaining the interference data of the cell to be detected in the plurality of sub-frequency ranges constituting each of the above-mentioned frequency ranges, when the reporting time indicated by the reporting period arrives, the above-mentioned to-be-detected The detection cell reports the maximum value and the average value of the interference data detected on the target uplink subframe of each radio bearer as the reported interference data.

Optionally, the above interference data includes: an interference NI value of the uplink subframe.

According to the present invention, after receiving the detection task, by obtaining multiple frequency band ranges covered by the antenna where the cell to be detected indicated by the detection task is located, so as to obtain the ranges of multiple sub-frequency bands constituting each of the frequency ranges respectively to be detected. Detect the interference data of the cell, so as to improve the efficiency of cell interference detection, ensure fast and efficient positioning of the interference location, and overcome the problem of low detection efficiency caused by detection by moving frequency points in the prior art.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

FIG. 1 is a flow chart of an optional cell interference detection method according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the application of an optional cell interference detection method according to an embodiment of the present invention;

FIG. 3 is a flowchart of another optional cell interference detection method according to an embodiment of the present invention; and

Fig. 4 is a schematic diagram of an optional device for detecting cell interference according to an optional embodiment of the present invention.

detailed description

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence.

Example 1

In this embodiment, a cell interference detection method is provided. FIG. 1 is a flowchart according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:

Step S102, receiving a detection task, wherein the detection task at least carries the cell identifier of the cell to be detected;

Step S104, acquiring multiple frequency ranges covered by the antenna where the cell to be detected indicated by the cell identifier is located;

Step S106 , acquiring interference data of the cell to be detected within a plurality of sub-frequency ranges constituting each frequency range.

Optionally, in this embodiment, the above cell interference detection method may be, but not limited to, triggering the detection of interference from the remote radio module (BBU, Building Base Band Unit) side, performing uplink interference detection on the out-of-band of the cell, and obtaining The received interference data is reported to the network management, so that the network management can display the reported interference data to the user in the form of data or graphics for the user to perform interference analysis, so as to accurately find out the interference location where the interference occurs during the uplink transmission of the cell. Optionally, in this embodiment, the above interference data may include but not limited to: an interference (NI, Noise Interference) value of an uplink subframe. It should be noted that, in this embodiment, by triggering on the BBU side, not only the impact of interference on the cell can be seen intuitively. Moreover, the acquired detection result of the interference can also be made more accurate. Wherein, the above-mentioned gateway includes an operation and maintenance center (OMC, Operation&Maintenance Center). Specifically, the OAM, Operations, Administration and Maintenance (OAM, Operations, Administration and Maintenance) center may, but is not limited to, receive a full-bandwidth detection task through the UDT channel provided by the OMC, wherein the detection task may at least include, but is not limited to: the cell to be detected The cell identification, so that OAM can detect the full bandwidth of multiple frequency bands within the coverage area of the antenna where the specified cell is located, so as to realize the fast and accurate positioning of the out-of-band interference of the cell, so as to improve the out-of-band interference detection efficiency. Optionally, in this embodiment, the above detection task may also include a reporting period, so that when the reporting time indicated by the reporting period arrives, the OAM will report and display the acquired interference data to the user for analysis by the user. Out of the interference position.

Optionally, in this embodiment, the ranges of multiple frequency bands covered by the antenna where the cell to be detected is located may be, but not limited to, ranges of multiple frequency bands corresponding to the RRU.

It should be noted that the corresponding relationship between the cell identifier of the cell to be detected and the RRU and the uplink antenna port is pre-stored in the database. After obtaining the cell ID of the cell to be detected carried in the detection task, the RRU and all uplink antenna ports corresponding to the cell to be detected can be obtained according to the cell ID, so that not only the in-band interference can be detected, but also the out-of-band interference can be detected. Interference can be quickly and accurately located.

Optionally, in this embodiment, when obtaining multiple sub-frequency ranges within each of the above-mentioned frequency ranges, the frequency point range of each sub-frequency range may be determined, but not limited to, by obtaining the center frequency point of each sub-frequency range . For example, if the center frequency point is 9M and the detected bandwidth range is 6M, then the corresponding sub-frequency range may be (6M, 12M).

Optionally, in this embodiment, after completing the interference detection for each frequency range, before adjusting to the next frequency range corresponding to the uplink antenna port, it may also include, but not limited to, the The frequency point is adjusted to the original frequency point, so as to achieve the normal operation of the uplink antenna port after obtaining multiple sub-frequency ranges within the frequency range by adjusting the center frequency point for interference detection.

Optionally, in this embodiment, after the interference detection for all frequency ranges is completed, the method may further include: reporting the detected interference data when the reporting time indicated by the reporting period arrives. Wherein, the interference data reported according to the reporting period may be, but not limited to, the maximum value and/or the average value of the interference NI value.

Specifically combined with the application scenario shown in Figure 2, OMC 202 will provide a frequency scanning interface for setting detection tasks so that users can set the information of detection tasks, for example, the cell identity (i.e. cell ID) of the cell to be detected, the reporting period . Further, in step S202 as shown in Figure 2, OMC 202 sends the detection task to base station OAM 204, and then, base station OAM 204 will forward the detection task to baseband module 208, as in step S204, further, as in step S206, search the database according to the designated cell The RRU 206 and the uplink antenna port where the cell is located, and the frequency range corresponding to the uplink antenna port. Calculate the center frequency points of each sub-frequency range in the above frequency range, so as to obtain the interference data collected by the radio bearer corresponding to the cell to be detected from the interference buffer of the PHY 210 at each center frequency point, as in step S208. When the reporting time of the reporting period arrives, the baseband module 208 will report the acquired interference data to the OMC 202, as in step S210. After receiving the interference data, the OMC 202 caches the data according to the reporting format. If the user selects the graphic display, the OMC will display the acquired interference data in a graphic form. For example, the horizontal axis is RB or frequency point, and the vertical axis is NI value.

Wherein, when obtaining the above frequency band range, it may be, but not limited to: sequentially obtain the first uplink antenna port of the RRU to the last uplink antenna port.

Specifically combined with the following examples for illustration, taking the detection means as frequency scanning as an example, and combining steps S302-S332 shown in Figure 3 to illustrate the process of cell out-of-band interference detection can be as follows:

S1, OAM searches the frequency band range [A, B] of the specified uplink antenna port from the RRU;

S2, calculate the central frequency point of the RRU, and send the calculated central frequency point to the RRU;

S3. After receiving the central frequency point setting message, the RRU saves the original frequency point of the port. Enable the newly set frequency point. Reply to the OAM with a frequency setting completion message;

S4. After the OAM receives the center frequency point completion message, it assigns a frequency scanning task to the baseband module and carries a designated port;

S5, after the baseband module receives the task, it sends a message to the Field-Programmable Gate Array (FPGA, Field-Programmable Gate Array) used for port shielding to shield other ports in the community;

S6, start to collect interference data from the interference buffer of the PHY on the designated cell, and collect the NI values on all RBs at each transmission interval TTI;

S7, when the reporting period arrives, the baseband module reports the collected data to the OAM, and stops frequency scanning.

S8. After receiving the collected interference data, the OAM continues to move the central frequency point of the RRU, and repeats S2-S8 until the end of the frequency point of the port;

S9, the OAM sends a frequency point recovery message to the designated frequency scanning port of the RRU;

S10, after the RRU receives the frequency point restoration message, it restores to the original frequency point, and sends a message of success in setting the frequency point restoration to the OAM;

S11. After receiving the frequency point restoration message, the OAM starts frequency scanning of the next port. Repeat S1 to S11.

Optionally, in this embodiment, within the frequency range, the central frequency point of each sub-frequency range may be determined according to the cell bandwidth, but not limited to. Among them, the cell bandwidth can be as follows:

1) Configured as a 20M cell, the cell bandwidth is 18M

2) Configured as a 15M cell, the cell bandwidth is 13.5M

3) Configured as a 10M cell, the cell bandwidth is 9M

4) Configured as a 5M cell, the cell bandwidth is 4.5M

5) Configured as a 3M cell, the cell bandwidth is 2.7M

6) Configured as a 1.4M cell, the cell bandwidth is 1.08M

The foregoing is only an example, and no limitation is set in this embodiment.

Through the embodiments provided in this application, after receiving the detection task, by obtaining the multiple frequency ranges covered by the antenna of the cell to be detected indicated by the detection task, to achieve multiple sub-frequency ranges that constitute each of the frequency ranges Obtain the interference data of the cell to be detected within a certain range, so as to improve the efficiency of cell interference detection, ensure fast and efficient positioning of the interference location, and overcome the problem of low detection efficiency caused by detection by moving frequency points in the prior art.

As an optional solution, multiple frequency ranges covered by the antenna where the cell to be detected indicated by the cell identifier is obtained include:

S1, searching for multiple uplink antenna ports corresponding to the antenna where the cell to be detected is located according to the cell identifier;

S2. Obtain a frequency band range corresponding to each uplink antenna port.

Optionally, in this embodiment, the ranges of multiple frequency bands covered by the antennas where the cells to be detected are located may, but are not limited to, correspond to multiple uplink antenna ports respectively. Through the obtained cell ID, the RRU corresponding to the antenna where the cell is located is searched in the database according to the cell ID, and further, the uplink antenna port corresponding to the RRU is obtained to obtain multiple frequency band ranges.

Through the embodiments provided in this application, by acquiring multiple frequency ranges corresponding to a cell, interference detection is performed on each frequency range respectively, so as to achieve the purpose of expanding the range of interference detection, and then quickly locate the interference location of out-of-band interference.

As an optional solution, obtaining the interference data of the cell to be detected in the multiple sub-frequency ranges constituting each frequency range includes:

S1. Obtain multiple sub-frequency ranges in each frequency range according to the cell bandwidth of the cell to be detected;

S2. Obtain interference data at center frequency points of the sub-frequency range respectively.

Optionally, in this embodiment, the foregoing frequency band range includes: a start frequency point and a stop frequency point.

Optionally, in this embodiment, obtaining each sub-frequency range may include but is not limited to: taking the cell bandwidth as a moving distance, and obtaining multiple sub-frequency ranges by sequentially adjusting the center frequency within the frequency range. Optionally, in this embodiment, after the center frequency point is adjusted each time, the interference data starts to be acquired in the corresponding sub-frequency range.

As an optional solution, obtaining multiple sub-frequency ranges in each frequency range according to the cell bandwidth of the cell to be detected includes:

S1, take the center frequency point of each sub-band range as the current center frequency point of the current sub-band range, perform the following steps until reaching the end frequency point, the initial value of the current center frequency point is half of the cell bandwidth and the starting value The sum of the starting frequency points:

S12, judging whether the end frequency point of the current sub-frequency range reaches the end frequency point, wherein the end frequency point is the sum of half of the cell bandwidth and the current center frequency point;

S14, if the end frequency point of the current sub-frequency range does not reach the end frequency point, then obtain the current sub-frequency range ((f _i -C/2), (f _i +C/2)), where the current sub-frequency range The current center frequency f _i includes:

f _i =f _i-1 +C,

Wherein, f _i is the center frequency point of the current sub-frequency range, f _i-1 is the center frequency point of the previous sub-frequency range of the current sub-frequency range, and C is the cell bandwidth of the sub-band to be detected;

S16, if the end frequency point of the current sub-frequency range reaches the end frequency point, then obtain the current sub-frequency range ((f _i -C/2), (f _i +C/2)), wherein the current sub-frequency range of the current sub-frequency range Center frequency points f _i include:

f _i =BC/2,

Wherein, _fi is the center frequency point of the current sub-frequency range, B is the end frequency point of the frequency range, and C is the cell bandwidth of the cell to be detected.

Optionally, in this embodiment, the center frequency point may also be obtained according to the end frequency point of the sub-frequency range. Assuming that the bandwidth of the cell is C, the calculation method of the center frequency point can be as follows:

The first time: center frequency point = A±C/2; end frequency point = A+C/2;

Follow-up: center frequency point = last end frequency point + C/2;

End frequency = start frequency + cell bandwidth;

If end frequency > end frequency;

Then the center frequency point = end frequency point - cell bandwidth/2;

Otherwise, center frequency point=start frequency point+cell bandwidth/2.

It should be noted that when calculating the center frequency point, it can be calculated based on the previous center frequency point, and the moving distance is a cell bandwidth C, or it can be calculated based on the end frequency point of the previous sub-frequency range, and the moving distance is 1/ The bandwidth C of two cells is not limited in this embodiment.

Specifically combined with the following example to illustrate, assuming that the frequency range is [1880,1915], the cell to be detected is 20M (cell ID is 1), and the cell bandwidth of this cell is 18M, the way to sequentially obtain multiple sub-frequency ranges in the frequency range may include : The initial value of the center frequency point is f _i =1880+18/2=1889. In the sub-band range corresponding to the center frequency point of 1889, the end frequency point is 1898, and the end frequency point of the next sub-band range is 1898+18=1916, that is, greater than the stop frequency point 1915, then the next center frequency point f _i =1915-18/2=1907. This is just an example, which is not limited in this embodiment.

Through the embodiments provided by this application, the center frequency points of multiple sub-frequency ranges in each frequency range are obtained in the above-mentioned manner, so as to obtain in-band and out-of-band interference data by sequentially adjusting the center frequency points, and then ensure accurate positioning of interference In the case of a location, efficient and fast interference detection can be performed on a large out-of-band range, so as to avoid the problem of low detection efficiency in the prior art.

As an optional solution, obtaining interference data at the center frequency points of the sub-band range includes:

S1. Obtain interference data on a pre-configured target uplink subframe every predetermined transmission interval at a center frequency point.

Optionally, in this embodiment, the interference data may be acquired but not limited to every predetermined transmission interval, where the interference data may be but not limited to the interference data acquired on a pre-configured fixed subframe. In this way, the subframe in which the interference position is located can be accurately located.

As an optional solution, after obtaining the interference data of the cell to be detected in the multiple sub-frequency ranges constituting each frequency range, the method further includes:

S1. When the reporting time indicated by the reporting period arrives, report the maximum value and the average value of the interference data detected by the cell to be detected on the target uplink subframe of each radio bearer as the reported interference data.

Optionally, in this embodiment, the interference data may include but not limited to: the interference NI value of the uplink subframe. The maximum value and the average value of the obtained interference NI values are used as the interference data reported by each radio bearer in the reporting period.

Through the embodiments provided in this application, the obtained maximum value and average value of the interference data are reported as the reported interference data, thereby ensuring the accuracy of the reported interference data.

Specifically, the following two examples are used to illustrate:

As an optional example, assuming that the cell to be detected is a 20M cell (cell ID=1), the detection means is frequency scanning, and the method for detecting whether there is out-of-band interference in this cell is as follows:

S1, on the OMC, select the cell to be detected as cell 1 of 20M, scan the frequency of the full bandwidth, and report the cycle for 5 minutes;

S2, triggering a detection task under the OMC;

S3. After receiving the detection task, the OAM searches the database for the RRU and uplink antenna port where cell 1 is located;

S4. The OAM sends a message to the RRU to query the frequency band covered by the antenna. The RRU feeds back the frequency band to the OAM;

S5, the frequency band where the OAM receives the RRU feedback is [1880, 1916];

S6, the OAM sets the center frequency point of the cell to 1880+9=1889;

S7, the OAM assigns a detection task to the baseband module CMAC;

S8, after the baseband module receives the detection task through OAM, it starts to collect interference data (such as NI value) on the cell 1;

S9, each TTI reads 100 RBs of interference data (such as NI values) from the buffer of subframe 5 of the PHY;

S10, and do maximum value and average value to the interference data (such as NI value) that reads;

S11, when the reporting time of the reporting period is 5 minutes, the baseband module will report the maximum value and average value of each RB, a total of 200 data;

S12, stop data collection;

S13. After receiving the interference data, the OAM forwards the interference data to the OMC;

S14, the central frequency point of the OAM mobile cell is 1880+18+9=1907, and repeat 7 to 9;

S15, having reached the end frequency point of the frequency range, the center frequency point of the cell will be restored to the original frequency point of the original configuration;

S16. The OMC receives the interference data reported by the OAM, caches the interference data, and displays it graphically.

Through the above process, the user can determine the location of the interference based on the displayed interference data.

It should be noted that, in this example, the collected interference data is the interference data detected on the radio bearer, and the meanings expressed are the same, which do not limit this embodiment.

As another optional example, assuming that the cell to be detected is a 10M cell (cell ID=2), and the detection means is frequency scanning, the method for detecting whether there is out-of-band interference in the cell is as follows:

S1, on the OMC, select the cell to be detected as 10M cell 2, scan the frequency of the full bandwidth, and report the cycle for 5 minutes;

S2, triggering a detection task under the OMC;

S3. After receiving the detection task, the OAM searches the database for the RRU and the uplink antenna port where cell 2 is located;

S4. The OAM sends a message to the RRU to query the frequency band covered by the antenna. The RRU feeds back the frequency band to the OAM;

S5, the frequency band where OAM receives RRU feedback is [2575,2593]

S6, OAM sets the center frequency point of the cell to 2575+4.5=2579.5

S7, the OAM assigns a detection task to the baseband module CMAC;

S8, after the baseband module receives the detection task through OAM, it starts to collect interference data (such as NI value) on the cell 2;

S9, each TTI reads 50 RBs of interference data (such as NI values) from the buffer of subframe 5 of the PHY;

S10, and do maximum value and average value to the interference data (such as NI value) that reads;

S11, when the reporting time of the reporting period is 5 minutes, the baseband module will report the maximum value and average value of each RB, a total of 100 data;

S12, stop data collection;

S13. After receiving the interference data, the OAM forwards the interference data to the OMC;

S14, the central frequency point of the OAM mobile cell is 2575+9+4.5=2588.5, and repeat 7 to 9;

S15, having reached the end frequency point of the frequency range, the center frequency point of the cell will be restored to the original frequency point of the original configuration;

S16. The OMC receives the interference data reported by the OAM, caches the interference data, and displays it graphically.

Through the above process, the user can determine the location of the interference based on the displayed interference data.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products are stored in a storage medium (such as ROM/RAM, disk, CD) contains several instructions to enable a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present invention.

Example 2

In this embodiment, a device for detecting cell interference is also provided, and the device is used to implement the above embodiments and preferred implementation modes, and those that have been explained will not be repeated here. As used below, the term "module" may be a combination of software and/or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

Fig. 4 is a schematic diagram of a device for detecting cell interference according to an embodiment of the present invention. As shown in Fig. 4, the device includes

1) The receiving unit 402 is configured to receive a detection task, wherein the detection task at least carries the cell identifier of the cell to be detected;

2) The first acquiring unit 404 is configured to acquire multiple frequency ranges covered by the antenna where the cell to be detected indicated by the cell identifier is located;

3) The second obtaining unit 406 is configured to obtain interference data of the cell to be detected within the multiple sub-frequency ranges constituting each frequency range.

Optionally, in this embodiment, the above cell interference detection method may be, but not limited to, triggering the detection of interference from the remote radio module (BBU, Building Base Band Unit) side, performing uplink interference detection on the out-of-band of the cell, and obtaining The received interference data is reported to the network management, so that the network management can display the reported interference data to the user in the form of data or graphics for the user to perform interference analysis, so as to accurately find out the interference location where the interference occurs during the uplink transmission of the cell. Optionally, in this embodiment, the above interference data may include but not limited to: an interference (NI, Interference) value of an uplink subframe. It should be noted that, in this embodiment, by triggering on the BBU side, not only the impact of interference on the cell can be seen intuitively. Moreover, the acquired detection result of the interference can also be made more accurate.

Specifically, the OAM, Operations, Administration and Maintenance (OAM, Operations, Administration and Maintenance) center may, but is not limited to, receive a full-bandwidth detection task through the UDT channel provided by the OMC, wherein the detection task may at least include, but is not limited to: the cell to be detected The cell identification, so that OAM can detect the full bandwidth of multiple frequency bands within the coverage area of the antenna where the specified cell is located, so as to realize the fast and accurate positioning of the out-of-band interference of the cell, so as to improve the out-of-band interference detection efficiency. Optionally, in this embodiment, the above detection task may also include a reporting period, so that when the reporting time indicated by the reporting period arrives, the OAM will report and display the acquired interference data to the user for analysis by the user. Out of the interference position.

Optionally, in this embodiment, the ranges of multiple frequency bands covered by the antenna where the cell to be detected is located may be, but not limited to, ranges of multiple frequency bands corresponding to the RRU.

It should be noted that the corresponding relationship between the cell identifier of the cell to be detected and the RRU and the uplink antenna port is pre-stored in the database. After obtaining the cell ID of the cell to be detected carried in the detection task, the RRU and all uplink antenna ports corresponding to the cell to be detected can be obtained according to the cell ID, so that not only the in-band interference can be detected, but also the out-of-band interference can be detected. Interference can be quickly and accurately located.

Optionally, in this embodiment, when obtaining multiple sub-frequency ranges within each of the above-mentioned frequency ranges, the frequency point range of each sub-frequency range may be determined, but not limited to, by obtaining the center frequency point of each sub-frequency range . For example, if the center frequency point is 9M and the detected bandwidth range is 6M, then the corresponding sub-frequency range may be (6M, 12M).

Optionally, in this embodiment, after completing the interference detection for each frequency range, before adjusting to the next frequency range corresponding to the uplink antenna port, it may also include, but not limited to, the The frequency point is adjusted to the original frequency point, so as to achieve the normal operation of the uplink antenna port after obtaining multiple sub-frequency ranges within the frequency range by adjusting the center frequency point for interference detection.

Optionally, in this embodiment, after the interference detection for all frequency ranges is completed, the method may further include: reporting the detected interference data when the reporting time indicated by the reporting period arrives. Wherein, the interference data reported according to the reporting period may be, but not limited to, the maximum value and/or the average value of the interference NI value.

Specifically combined with the application scenario shown in Figure 2, OMC 202 will provide a frequency scanning interface for setting detection tasks so that users can set the information of detection tasks, for example, the cell identity (i.e. cell ID) of the cell to be detected, the reporting period . Further, in step S202 as shown in Figure 2, OMC 202 sends the detection task to base station OAM 204, and then, base station OAM 204 will forward the detection task to baseband module 208, as in step S204, further, as in step S206, search the database according to the designated cell The RRU 206 and the uplink antenna port where the cell is located, and the frequency range corresponding to the uplink antenna port. Calculate the center frequency points of each sub-frequency range in the above frequency range, so as to obtain the interference data collected by the radio bearer corresponding to the cell to be detected from the interference buffer of the PHY 210 at each center frequency point, as in step S208. When the reporting time of the reporting period arrives, the baseband module 208 will report the acquired interference data to the OMC 202, as in step S210. After receiving the interference data, the OMC 202 caches the data according to the reporting format. If the user selects the graphic display, the OMC will display the acquired interference data in a graphic form. For example, the horizontal axis is RB or frequency point, and the vertical axis is NI value.

Wherein, when obtaining the above frequency band range, it may be, but not limited to: sequentially obtain the first uplink antenna port of the RRU to the last uplink antenna port.

Specifically combined with the following examples for illustration, taking the detection means as frequency scanning as an example, and combining steps S302-S332 shown in Figure 3 to illustrate the process of cell out-of-band interference detection can be as follows:

S1, OAM searches the frequency band range [A, B] of the specified uplink antenna port from the RRU;

S2, calculate the central frequency point of the RRU, and send the calculated central frequency point to the RRU;

S3. After receiving the central frequency point setting message, the RRU saves the original frequency point of the port. Enable the newly set frequency point. Reply to the OAM with a frequency setting completion message;

S4. After the OAM receives the center frequency point completion message, it assigns a frequency scanning task to the baseband module and carries a designated port;

S5, after the baseband module receives the task, it sends a message to the Field-Programmable Gate Array (FPGA, Field-Programmable Gate Array) used for port shielding to shield other ports in the community;

S6, start to collect interference data from the interference buffer of the PHY on the designated cell, and collect the NI values on all RBs at each transmission interval TTI;

S7, when the reporting period arrives, the baseband module reports the collected data to the OAM, and stops frequency scanning.

S8. After receiving the collected interference data, the OAM continues to move the central frequency point of the RRU, and repeats S2-S8 until the end of the frequency point of the port;

S9, the OAM sends a frequency point recovery message to the designated frequency scanning port of the RRU;

S10, after the RRU receives the frequency point restoration message, it restores to the original frequency point, and sends a message of success in setting the frequency point restoration to the OAM;

S11. After receiving the frequency point restoration message, the OAM starts frequency scanning of the next port. Repeat S1 to S11.

Optionally, in this embodiment, within the frequency range, the central frequency point of each sub-frequency range may be determined according to the cell bandwidth, but not limited to. Among them, the cell bandwidth can be as follows:

1) Configured as a 20M cell, the cell bandwidth is 18M

2) Configured as a 15M cell, the cell bandwidth is 13.5M

3) Configured as a 10M cell, the cell bandwidth is 9M

4) Configured as a 5M cell, the cell bandwidth is 4.5M

5) Configured as a 3M cell, the cell bandwidth is 2.7M

6) Configured as a 1.4M cell, the cell bandwidth is 1.08M

The foregoing is only an example, and no limitation is set in this embodiment.

Through the embodiments provided in this application, after receiving the detection task, by obtaining the multiple frequency ranges covered by the antenna of the cell to be detected indicated by the detection task, to achieve multiple sub-frequency ranges that constitute each of the frequency ranges Obtain the interference data of the cell to be detected within a certain range, so as to improve the efficiency of cell interference detection, ensure fast and efficient positioning of the interference location, and overcome the problem of low detection efficiency caused by detection by moving frequency points in the prior art.

As an optional solution, the first acquiring unit 404 includes:

1) a search module, configured to search for a plurality of uplink antenna ports corresponding to the antenna where the cell to be detected is located according to the cell identifier;

2) A first acquiring module, configured to acquire the frequency band range corresponding to each uplink antenna port.

Optionally, in this embodiment, the ranges of multiple frequency bands covered by the antennas where the cells to be detected are located may, but are not limited to, correspond to multiple uplink antenna ports respectively. Through the obtained cell ID, the RRU corresponding to the antenna where the cell is located is searched in the database according to the cell ID, and further, the uplink antenna port corresponding to the RRU is obtained to obtain multiple frequency band ranges.

Through the embodiments provided in this application, by acquiring multiple frequency ranges corresponding to a cell, interference detection is performed on each frequency range respectively, so as to achieve the purpose of expanding the range of interference detection, and then quickly locate the interference location of out-of-band interference.

As an optional solution, the second acquisition unit includes:

1) The second acquisition module is used to acquire multiple sub-frequency ranges on each frequency range according to the cell bandwidth of the cell to be detected;

2) A third acquisition module, configured to acquire interference data at the center frequency points of the sub-band range respectively.

Optionally, in this embodiment, the foregoing frequency band range includes: a start frequency point and a stop frequency point.

Optionally, in this embodiment, obtaining each sub-frequency range may include but is not limited to: taking the cell bandwidth as a moving distance, and obtaining multiple sub-frequency ranges by sequentially adjusting the center frequency within the frequency range. Optionally, in this embodiment, after the center frequency point is adjusted each time, the interference data starts to be acquired in the corresponding sub-frequency range.

As an optional solution, the second acquisition module includes:

1) The processing sub-module is used to use the center frequency point of each sub-band range as the current center frequency point of the current sub-band range, and perform the following steps until the end frequency point is reached. The initial value of the current center frequency point is 100% of the cell bandwidth The sum of one-half and the starting frequency point:

S1, judging whether the end frequency point of the current sub-frequency range reaches the end frequency point, wherein the end frequency point is the sum of half of the cell bandwidth and the current center frequency point;

S2, if the end frequency point of the current sub-frequency range does not reach the end frequency point, then obtain the current sub-frequency range ((f _i -C/2), (f _i +C/2)), wherein, the current sub-frequency range The current center frequency f _i includes:

f _i =f _i-1 +C,

Wherein, f _i is the center frequency point of the current sub-frequency range, f _i-1 is the center frequency point of the previous sub-frequency range of the current sub-frequency range, and C is the cell bandwidth of the sub-band to be detected;

S3, if the end frequency point of the current sub-frequency range reaches the end frequency point, then obtain the current sub-frequency range ((f _i -C/2), (f _i +C/2)), wherein, the current sub-frequency range of the current sub-frequency range Center frequency points f _i include:

f _i =BC/2,

Wherein, _fi is the center frequency point of the current sub-frequency range, B is the end frequency point of the frequency range, and C is the cell bandwidth of the cell to be detected.

Optionally, in this embodiment, the center frequency point may also be obtained according to the end frequency point of the sub-frequency range. Assuming that the bandwidth of the cell is C, the calculation method of the center frequency point can be as follows:

The first time: center frequency point = A±C/2; end frequency point = A+C/2;

Follow-up: center frequency point = last end frequency point + C/2;

End frequency = start frequency + cell bandwidth;

If end frequency > end frequency;

Then the center frequency point = end frequency point - cell bandwidth/2;

Otherwise, center frequency point=start frequency point+cell bandwidth/2.

It should be noted that when calculating the center frequency point, it can be calculated based on the previous center frequency point, and the moving distance is a cell bandwidth C, or it can be calculated based on the end frequency point of the previous sub-frequency range, and the moving distance is 1/ The bandwidth C of two cells is not limited in this embodiment.

Specifically combined with the following example to illustrate, assuming that the frequency range is [1880,1915], the cell to be detected is 20M (cell ID is 1), and the cell bandwidth of this cell is 18M, the way to sequentially obtain multiple sub-frequency ranges in the frequency range may include : The initial value of the center frequency point is f _i =1880+18/2=1889. In the sub-band range corresponding to the center frequency point of 1889, the end frequency point is 1898, and the end frequency point of the next sub-band range is 1898+18=1916, that is, greater than the stop frequency point 1915, then the next center frequency point f _i =1915-18/2=1907. This is just an example, which is not limited in this embodiment.

Through the embodiments provided by this application, the center frequency points of multiple sub-frequency ranges in each frequency range are obtained in the above-mentioned manner, so as to obtain in-band and out-of-band interference data by sequentially adjusting the center frequency points, and then ensure accurate positioning of interference In the case of a location, efficient and fast interference detection can be performed on a large out-of-band range, so as to avoid the problem of low detection efficiency in the prior art.

As an optional solution, the third acquisition module includes:

1), the acquisition sub-module is used to acquire the interference data on the pre-configured target uplink subframe every predetermined transmission interval at the center frequency point.

Optionally, in this embodiment, the interference data may be acquired but not limited to every predetermined transmission interval, where the interference data may be but not limited to the interference data acquired on a pre-configured fixed subframe. In this way, the subframe in which the interference position is located can be accurately located.

As an option, also include:

S1, a reporting unit, configured to, after obtaining the interference data of the cell to be detected in the multiple sub-frequency ranges constituting each frequency range, when the reporting time indicated by the reporting period arrives, the cell to be detected is in each radio bearer The maximum value and the average value of the interference data detected on the target uplink subframe are reported as the reported interference data.

Optionally, in this embodiment, the interference data may include but not limited to: the interference NI value of the uplink subframe. The maximum value and the average value of the obtained interference NI values are used as the interference data reported by each radio bearer in the reporting period.

Through the embodiments provided in this application, the obtained maximum value and average value of the interference data are reported as the reported interference data, thereby ensuring the accuracy of the reported interference data.

It should be noted that each of the above-mentioned modules can be implemented by software or hardware. For the latter, it can be implemented in the following manner, but not limited to this: the above-mentioned modules are all located in the same processor; or, the above-mentioned modules are respectively located in multiple in the processor.

Example 3

The embodiment of the invention also provides a storage medium. Optionally, in this embodiment, the above-mentioned storage medium may be configured to store program codes for performing the following steps:

S1. Receive a detection task, wherein the detection task at least carries a cell identifier of the cell to be detected;

S2. Obtain multiple frequency ranges covered by the antenna where the cell to be detected indicated by the cell identifier is located;

S3. Obtain interference data of the cell to be detected within multiple sub-frequency ranges constituting each frequency range.

Optionally, in this embodiment, the above-mentioned storage medium may include but not limited to: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk Various media that can store program codes such as discs or optical discs.

Optionally, for specific examples in this embodiment, reference may be made to the examples described in the foregoing embodiments and optional implementation manners, and details are not repeated in this embodiment.

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Alternatively, they may be implemented in program code executable by a computing device so that they may be stored in a storage device to be executed by a computing device, and in some cases in an order different from that shown here The steps shown or described are carried out, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps among them are fabricated into a single integrated circuit module for implementation. As such, the present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (14)

1. a kind of area interference detection method, it is characterised in that include：

Detection task is received, wherein, the cell ID of cell to be detected is at least carried in the Detection task；

Obtain multiple band limits that the antenna at the cell place described to be detected that the cell ID is indicated is covered；

The dry of the cell to be detected is obtained in the range of the multiple frequency sub-band for constituting each band limits respectively Disturb data.

2. method according to claim 1, it is characterised in that it is described to be checked that the acquisition cell ID is indicated Multiple band limits that the antenna that survey cell is located is covered include：

Multiple up days corresponding with the antenna at the cell place to be detected are searched according to the cell ID Line end mouth；

Obtain the band limits corresponding with uplink antenna port each described.

3. method according to claim 1, it is characterised in that described to constitute many of each band limits respectively The interference data that the cell to be detected is obtained in individual sub- band limits include：

Obtain the plurality of on each described band limits respectively according to the bandwidth of cell of the cell to be detected Frequency sub-band scope；

Center frequency point in the frequency sub-band scope obtains the interference data respectively.

4. method according to claim 2, it is characterised in that the band limits includes：Initial frequency and termination frequency Point, the bandwidth of cell according to the cell to be detected obtain described many on each described band limits respectively Individual sub- band limits includes：

Using the center frequency point of each frequency sub-band scope as current frequency sub-band scope Current central frequency, perform with Lower step, until it reaches the termination frequency, the initial value of the Current central frequency is the two of the bandwidth of cell / mono- with the initial frequency and：

Judge whether the end frequency of the current frequency sub-band scope reaches the termination frequency, wherein, it is described Terminate frequency be the bandwidth of cell 1/2nd with the Current central frequency and；

If the end frequency of the current frequency sub-band scope is not up to the termination frequency, obtain described current Frequency sub-band scope ((f_i- C/2), (f_i+ C/2)), wherein, the current frequency sub-band scope it is described current Center frequency point f_iIncluding：

f_i=f_i-1+ C,

Wherein, the f_iFor the center frequency point of the current frequency sub-band scope, the f_i-1For the current son The center frequency point of the previous frequency sub-band scope of band limits, the C are the cell of the cell to be detected Bandwidth

If the end frequency of the current frequency sub-band scope reaches the termination frequency, the current son is obtained Band limits ((f_i- C/2), (f_i+ C/2)), wherein, the current frequency sub-band scope it is described current in Heart frequency f_iIncluding：

f_i=B-C/2,

Wherein, the f_iFor the center frequency point of the current frequency sub-band scope, the B is the band limits The termination frequency, the C is the bandwidth of cell of the cell to be detected.

5. method according to claim 3, it is characterised in that it is described respectively the frequency sub-band scope center frequency point Obtaining the interference data includes：

The center frequency point every scheduled transmission interval acquiring on the target sub-frame of uplink being pre-configured with described in Interference data.

6. method according to claim 5, it is characterised in that constituting the multiple of each band limits respectively After the interference data of the cell to be detected are obtained in the range of frequency sub-band, also include：

When reporting indicated by report cycle reaches constantly, by the cell to be detected in each radio bearer The maximum and mean value of the interference data detected on the target sub-frame of uplink is used as the interference number for reporting According to being reported.

7. the method according to any one of claim 1-6, it is characterised in that the interference data include：Up son The interference NI values of frame.

8. a kind of area interference detection means, it is characterised in that include：

Receiving unit, for receiving Detection task, wherein, cell to be detected is at least carried in the Detection task Cell ID；

First acquisition unit, is covered for obtaining the antenna that the cell described to be detected that the cell ID is indicated is located Multiple band limits of lid；

Second acquisition unit, for respectively constitute each band limits multiple frequency sub-band in the range of obtain institute State the interference data of cell to be detected.

9. device according to claim 8, it is characterised in that the first acquisition unit includes：

Searching modul, should for searching the antenna pair being located with the cell to be detected according to the cell ID Multiple uplink antenna ports；

First acquisition module, for obtaining the band limits corresponding with uplink antenna port each described.

10. device according to claim 8, it is characterised in that the second acquisition unit includes：

Second acquisition module, for obtaining each described frequency range respectively according to the bandwidth of cell of the cell to be detected The plurality of frequency sub-band scope in scope；

3rd acquisition module, obtains the interference data for the center frequency point respectively in the frequency sub-band scope.

11. devices according to claim 9, it is characterised in that the band limits includes：Initial frequency and termination frequency Point, second acquisition module include：

Process submodule, for using the center frequency point of each frequency sub-band scope as the current of current frequency sub-band scope Center frequency point, performs following steps, until it reaches the termination frequency, and the initial value of the Current central frequency is / 2nd of the bandwidth of cell and the initial frequency and：

Judge whether the end frequency of the current frequency sub-band scope reaches the termination frequency, wherein, it is described Terminate frequency be the bandwidth of cell 1/2nd with the Current central frequency and；

If the end frequency of the current frequency sub-band scope is not up to the termination frequency, obtain described current Frequency sub-band scope ((f_i- C/2), (f_i+ C/2)), wherein, the current frequency sub-band scope it is described current Center frequency point f_iIncluding：

f_i=f_i-1+ C,

Wherein, the f_iFor the center frequency point of the current frequency sub-band scope, the f_i-1For the current son The center frequency point of the previous frequency sub-band scope of band limits, the C are the cell of the cell to be detected Bandwidth；

If the end frequency of the current frequency sub-band scope reaches the termination frequency, the current son is obtained Band limits ((f_i- C/2), (f_i+ C/2)), wherein, the current frequency sub-band scope it is described current in Heart frequency f_iIncluding：

f_i=B-C/2,

Wherein, the f_iFor the center frequency point of the current frequency sub-band scope, the B is the band limits The termination frequency, the C is the bandwidth of cell of the cell to be detected.

12. devices according to claim 10, it is characterised in that the 3rd acquisition module includes：

Acquisition submodule, in the center frequency point every scheduled transmission interval acquiring in the target being pre-configured with The interference data in row subframe.

13. devices according to claim 12, it is characterised in that also include：

Reporting unit, for respectively in the range of the multiple frequency sub-band for constituting each band limits described in acquisition After the interference data of cell to be detected, when reporting indicated by report cycle reaches constantly, will be described to be detected The maximum of the interference data that cell is detected on the target sub-frame of uplink of each radio bearer and Mean value is reported as the interference data for reporting.

14. devices according to any one of claim 8-13, it is characterised in that the interference data include：It is up The interference NI values of subframe.