CN107343292B - TD-LTE system interference judgment method and device - Google Patents
TD-LTE system interference judgment method and device Download PDFInfo
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- CN107343292B CN107343292B CN201610279122.8A CN201610279122A CN107343292B CN 107343292 B CN107343292 B CN 107343292B CN 201610279122 A CN201610279122 A CN 201610279122A CN 107343292 B CN107343292 B CN 107343292B
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Abstract
The invention relates to the field of communication, in particular to a method and a device for judging TD-LTE system interference, wherein the method comprises the steps of determining any one special subframe contained in a wireless frame when the wireless frame is received, and acquiring the IOT of each appointed idle PRB in the any one special subframe; and screening the idle PRBs of which the IOT is larger than a first set threshold value according to the IOT of each appointed idle PRB, judging whether the number of the screened idle PRBs is larger than a first preset number, if so, judging that the interference exists outside the system, otherwise, judging that the interference exists or is not interfered inside the system, and thus, judging the interference of the F frequency band according to the interference condition of the appointed idle PRBs of the special subframe, effectively carrying out interference investigation of the F frequency band and providing a basis for subsequent processing.
Description
Technical Field
The invention relates to the field of communication, in particular to a method and a device for judging TD-LTE system interference.
Background
At present, operators begin to build 4G networks in a large scale, and primarily build an F band in a Time division long Term Evolution (TD-LTE) system at an initial stage, wherein the F band is 1880MHZ-1920MHZ at present. The current frequency plan is that China telecom uses a frequency band from 1765MHZ to 1780MHz (terminal transmission)/1860 MHZ to 1875MHz (base station transmission), and China Unicom uses a frequency band from 1755MHZ to 1765MHz (terminal transmission)/1850 MHZ to 1860MHz (base station transmission).
However, existing systems of 1800MHz Digital Cellular System at1800MHz, DCS1800, 900MHz Global System For mobile communications at 900MHz, GSM900, etc. in the existing network, or future telecommunication LTE-FDD systems may cause extra-System interference to the F band of TD-LTE System, which may affect the normal operation of the chinese mobile 4G base station. Therefore, it is desirable to provide an interference checking scheme for F band of TD-LTE system.
Disclosure of Invention
The embodiment of the invention provides a method and a device for judging interference of a TD-LTE (time division-Long term evolution) system, which are used for improving the effectiveness of interference investigation of an F frequency band.
The embodiment of the invention provides the following specific technical scheme:
a TD-LTE system interference judgment method comprises the following steps:
when a wireless frame is received, determining any one special subframe contained in the wireless frame, and acquiring the IOT of each appointed idle PRB in the any one special subframe;
and screening out the idle PRBs of which the IOT is greater than a first set threshold value according to the IOT of each appointed idle PRB, judging whether the number of the screened idle PRBs is greater than a first preset number, if so, judging that the interference outside the system exists, and otherwise, judging that the interference inside the system exists or the interference does not exist.
In the embodiment of the invention, when a wireless frame is received, any one special subframe contained in the wireless frame is determined, and the IOT of each appointed idle PRB in the any one special subframe is obtained; according to the IOT of each appointed idle PRB, screening out the idle PRB of which the IOT is larger than a first set threshold value, judging whether the number of the screened idle PRB is larger than a first preset number, if so, judging that the interference exists outside the system, otherwise, judging that the interference exists or is not in the system, thus, according to the interference condition of the appointed idle PRB of the special subframe, judging the interference of the F frequency band, and quickly and accurately confirming the interference of the F frequency band of the TD-LTE system.
Preferably, the obtaining the IOT of each designated idle PRB in any one of the special subframes specifically includes:
and according to a preset period, obtaining the IOT of each appointed idle PRB in any one special subframe.
Preferably, after determining that there is an external interference, the method further includes:
and acquiring IOTs of all PRBs of any one special subframe.
Preferably, further comprising:
and screening out PRBs of which the IOT is greater than the first set threshold value according to the IOT of all the PRBs, judging whether the number of the screened PRBs is greater than a second preset number, if so, judging that the external interference of the system is blocking interference, and otherwise, judging that the external interference of the system is stray interference.
Therefore, stray interference and blocking interference are further judged according to all PRBs of the special subframes, interference investigation of the F frequency band of the TD-LTE system can be effectively carried out, and corresponding processing can be further carried out according to different interference sources.
Preferably, further comprising:
according to the IOTs of all PRBs, if the IOT of the PRBs with the third preset number is higher than the IOT of the other PRBs by a value larger than a second set threshold value, determining that the out-of-system interference is GSM900 interference or DCS1800 interference;
therefore, the GSM900 interference or DCS1800 interference is further judged according to all PRBs of the special subframes, the interference investigation of the F frequency band of the TD-LTE system can be effectively carried out, and further corresponding processing can be carried out according to different interference sources.
Preferably, any one of the special subframes is subframe 1 or subframe 6.
Preferably, if the any one special subframe is subframe 1, the designated idle PRB is the first 4 PRBs of subframe 1;
if any special subframe is subframe 6, the designated idle PRB is 4 PRBs after subframe 6.
An interference judgment device for a TD-LTE system comprises:
an obtaining unit, configured to determine any special subframe included in a radio frame when the radio frame is received, and obtain an IOT of each designated idle PRB in the any special subframe;
and the first processing unit is used for screening out the idle PRBs of which the IOT is greater than a first set threshold value according to the IOT of each appointed idle PRB, judging whether the number of the screened idle PRBs is greater than a first preset number, if so, judging that the interference outside the system exists, and otherwise, judging that the interference inside the system exists or the interference does not exist.
In the embodiment of the invention, when a wireless frame is received, any one special subframe contained in the wireless frame is determined, and the IOT of each appointed idle PRB in the any one special subframe is obtained; according to the IOT of each appointed idle PRB, screening out the idle PRB of which the IOT is larger than a first set threshold value, judging whether the number of the screened idle PRB is larger than a first preset number, if so, judging that the interference exists outside the system, otherwise, judging that the interference exists or is not in the system, thus, according to the interference condition of the appointed idle PRB of the special subframe, judging the interference of the F frequency band, and quickly and accurately confirming the interference of the F frequency band of the TD-LTE system.
Preferably, when the IOT of each designated idle PRB in any one of the special subframes is obtained, the obtaining unit is specifically configured to:
and according to a preset period, obtaining the IOT of each appointed idle PRB in any one special subframe.
Preferably, after determining that there is the out-of-system interference, the obtaining unit is further configured to:
and acquiring IOTs of all PRBs of any one special subframe.
Preferably, further comprising:
and the second processing unit is used for screening out the PRBs of which the IOT is greater than the first set threshold value according to the IOT of all the PRBs, judging whether the number of the screened PRBs is greater than a second preset number, if so, judging that the external interference of the system is blocking interference, and otherwise, judging that the external interference of the system is stray interference.
Therefore, stray interference and blocking interference are further judged according to all PRBs of the special subframes, interference investigation of the F frequency band of the TD-LTE system can be effectively carried out, and corresponding processing can be further carried out according to different interference sources.
Preferably, further comprising:
and a third processing unit, configured to determine, according to the IOT of all the PRBs, that the out-of-system interference is GSM900 interference or DCS1800 interference if it is determined that the IOT of the PRBs with the third preset number is higher than the IOT of the remaining PRBs by a value greater than a second set threshold.
Therefore, the GSM900 interference or DCS1800 interference is further judged according to all PRBs of the special subframes, the interference investigation of the F frequency band of the TD-LTE system can be effectively carried out, and further corresponding processing can be carried out according to different interference sources.
Preferably, any one of the special subframes is subframe 1 or subframe 6.
Preferably, if the any one special subframe is subframe 1, the designated idle PRB is the first 4 PRBs of subframe 1;
if any special subframe is subframe 6, the designated idle PRB is 4 PRBs after subframe 6.
Drawings
Fig. 1 is a flowchart illustrating an overview of a method for determining interference in a TD-LTE system according to an embodiment of the present invention;
fig. 2 is a detailed flowchart of a TD-LTE system interference determination method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an interference determination device of a TD-LTE system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to improve the effectiveness of F-band interference checking, in the embodiment of the present invention, when a radio frame is received, any one special subframe included in the radio frame is determined, an interference measurement value (IOT) of each designated idle Physical Resource Block (PRB) in the any one special subframe is obtained, an idle PRB of which the IOT is greater than a set threshold is screened out, whether the number of the screened idle PRBs is greater than a first preset number is determined, if yes, it is determined that there is external interference, and if not, it is determined that there is internal interference or no interference.
The present invention will be described in detail with reference to specific examples, but it is to be understood that the present invention is not limited to the examples.
Referring to fig. 1, in the embodiment of the present invention, a specific process of the TD-LTE system interference determination method is as follows:
in the embodiment of the present invention, F-band interference determination of the TD-LTE system is taken as an example for description.
It is worth to be noted that F-band interference of the TD-LTE system can be divided into intra-system interference and extra-system interference. Wherein the content of the first and second substances,
the intra-system interference is: networking between the same frequencies, and lifting the IOT of the local cell by the user service signal of the adjacent cell.
The external system interference can be further divided into:
1) the second harmonic of the 900MHz GSM signal of Band8, the interference frequency range is 1850MHz and 1920MHz, covering substantially the entire F-Band (i.e., GSM900 interference).
2) The 3 rd order 5 th order intermodulation signal of 1800MHz DCS signal of Band3 (i.e., DCS1800 interference).
3) Adjacent channel, secondary adjacent channel spurious signals (i.e., spurious interference) of FDD-LTE of Band 3.
4) Signal blocking (i.e., blocking interference) for FDD-LTE of Band 3.
Therefore, it is necessary to determine what the interference source of the F band is, and then perform corresponding processing.
Step 100: when a radio frame is received, determining any one special subframe contained in the radio frame, and acquiring the IOT of each designated idle PRB in the any one special subframe.
In practice, in the TD-LTE system, for a radio frame, the special subframe includes subframe 1 and subframe 6, and the IOT of each idle PRB in subframe 1 or subframe 6 may be counted when performing interference determination.
For the TD-LTE system, if any one of the special subframes is subframe 1, the designated idle PRB is the first 4 PRBs of subframe 1; if any special subframe is subframe 6, the designated idle PRB is 4 PRBs after subframe 6.
When the IOT of each designated idle PRB in any one of the special subframes is obtained, the method specifically includes:
and according to a preset period, obtaining the IOT of each appointed idle PRB in any one special subframe.
The preset period may be, for example, 24 periods from 0 to 24 points every other hour every day, and is used to check the interference condition of the F band.
That is, when step 100 is executed, the following two cases can be specifically classified:
in the first case: and according to a preset period, obtaining the IOT of the first 4 PRBs of the subframe 1.
In the second case: and according to a preset period, obtaining the IOT of the last 4 PRBs of the subframe 6.
Step 110: and screening out the idle PRBs of which the IOT is greater than a first set threshold value according to the IOT of each appointed idle PRB, judging whether the number of the screened idle PRBs is greater than a first preset number, if so, judging that the interference outside the system exists, and otherwise, judging that the interference inside the system exists or the interference does not exist.
When step 110 is executed, the method specifically includes:
firstly, according to the IOT of each designated idle PRB, screening out the idle PRB of which the IOT is greater than a first set threshold value.
Wherein, the preferred first set threshold is-105 dBm.
And then, judging whether the number of the screened idle PRBs is larger than a first preset number, if so, judging that the external interference exists, and otherwise, judging that the internal interference or the interference does not exist.
Since there are 4 idle PRBs for subframe 1 or subframe 6, the first predetermined number is preferably 3.
Because the F-band of the TD-LTE system is determined by interference according to the designated idle PRB of the special subframe, and the idle PRB is not used for information transmission in the TD-LTE system, when the IOT of the idle PRB is greater than the first set threshold, it can be determined whether the interference is external to the system, and the situation of the external interference is removed, which can be considered as intra-system interference or non-interference, and specifically, the intra-system interference or non-interference can be determined by other means.
Thus, the IOT of the first 4 PRBs of subframe 1 or the IOT of the last 4 PRBs of subframe 6 can be used to preliminarily determine whether the interference is outside the system or inside the system or is non-interference.
Further, after the step 110 is executed, it needs to determine which kind of external system interference specifically is: and acquiring IOTs of all PRBs of any one special subframe.
Then, the interference judgment is performed, which can be divided into the following two cases:
in the first case: and screening out PRBs of which the IOT is greater than the first set threshold value according to the IOT of all the PRBs, judging whether the number of the screened PRBs is greater than a second preset number, if so, judging that the external interference of the system is blocking interference, and otherwise, judging that the external interference of the system is stray interference.
In practice, the number of PRBs included in a subframe is different for different bandwidths, for example, under a bandwidth of 20M, the number of all PRBs in a subframe 1 or a subframe 6 is 200, and therefore, the second predetermined number is preferably 150, and may be other values, which may be set according to actual situations.
That is, when it is determined that the IOT of at least 150 PRBs out of all 200 PRBs of subframe 1 or subframe 6 is greater than-105 dBm, it is determined as blocking interference, and when it is determined that the condition for determining as blocking interference is not satisfied, it is determined as spurious interference.
In the second case: and according to the IOTs of all the PRBs, if the IOT of the PRBs with the third preset number is higher than the IOT of the other PRBs by a value larger than a second set threshold value, judging that the out-of-system interference is GSM900 interference or DCS1800 interference.
Wherein the third predetermined number is preferably 1, 2 or 3.
That is, when the IOT of most PRBs is relatively low, the IOT of only 1-3 PRBs is significantly higher than the IOT of the rest PRBs, and the value higher than the IOT of the rest PRBs is greater than a second set threshold, which may be set according to actual conditions, for example, the IOT of all PRBs is obtained, it is known that the IOT of most PRBs is about-120 dBm, the IOT of only 3 PRBs is significantly increased, for example, it is-100 dBm, -103dBm, and-98 dBm, respectively, the IOT of these 3 PRBs is higher than the IOT of the rest PRBs, and the interference of GSM900 or DCS1800 is determined.
The interference of GSM900 or DCS1800 is specifically represented as second harmonic interference of GSM900 and intermodulation interference of DCS1800 interference.
Therefore, whether the F frequency band has external interference and interference-free internal interference or not is judged according to the designated idle PRB of the special subframe, after the external interference is judged, the specific type of the external interference is judged according to all PRBs of the special subframe, the interference condition of the F frequency band of the TD-LTE system can be quickly and accurately judged, and corresponding treatment can be further carried out according to different interference sources.
The above embodiments are further described in detail below using a specific application scenario. Specifically, referring to fig. 2, in the embodiment of the present invention, an execution process of the TD-LTE system interference determination method is specifically as follows:
step 200: and acquiring the IOT of the designated idle PRB of any special subframe.
Specifically, when a radio frame is received, any one special subframe included in the radio frame is determined, and the IOT of each designated idle PRB in the any one special subframe is obtained according to a preset period.
Any one of the special subframes may be subframe 1 or subframe 6.
If the subframe number is subframe 1, the designated idle PRB is the first 4 PRBs of the subframe 1; if the subframe is subframe 6, the designated idle PRB is the last 4 PRBs of subframe 6.
Step 201: and judging whether the number of idle PRBs of which the IOT is greater than a first set threshold is greater than a first preset number, if so, executing the step 203, and otherwise, executing the step 202.
The first predetermined threshold is, for example, -105dBm, and the first predetermined number is, for example, 3.
Step 202: and judging as the interference or no interference in the system.
Step 203: and judging as the external interference.
Step 204: and acquiring IOTs of all PRBs of any one special subframe.
Thus, the type of the external interference is further judged according to the interference situation of all PRBs of any one special subframe.
Step 205: and judging whether the number of PRBs of which the IOT is greater than the first set threshold is greater than a second preset number, if so, executing the step 206, otherwise, executing the step 207.
If all PRBs of any one of the special subframes are 200, the second predetermined number is, for example, 150.
Step 206: and judging the system external interference as blocking interference.
Step 207: and judging the external interference as stray interference.
Step 208: and judging whether the IOT of the PRBs with the third preset number is higher than the IOT of the other PRBs in all the PRBs, wherein if yes, the step 209 is executed, and if not, the step 210 is executed.
Wherein the third preset number is, for example, 3.
Step 209: it is determined as either GSM900 interference or DCS1800 interference.
Step 210: and (6) ending.
Based on the foregoing embodiments, referring to fig. 3, in an embodiment of the present invention, a TD-LTE system interference determining apparatus specifically includes:
an obtaining unit 30, configured to determine any special subframe included in a radio frame when the radio frame is received, and obtain an IOT of each designated idle PRB in the any special subframe;
the first processing unit 31 is configured to screen out, according to the IOT of each designated idle PRB, an idle PRB of which the IOT is greater than a first set threshold, and determine whether the number of the screened idle PRB is greater than a first preset number, if yes, determine that there is an external interference, otherwise, determine that there is an internal interference or no interference.
Preferably, when the IOT of each designated idle PRB in any one of the special subframes is obtained, the obtaining unit 30 is specifically configured to:
and according to a preset period, obtaining the IOT of each appointed idle PRB in any one special subframe.
Preferably, after determining that the system-external interference exists, the obtaining unit 30 is further configured to:
and acquiring IOTs of all PRBs of any one special subframe.
Preferably, further comprising:
the second processing unit 32 is configured to screen PRBs with IOT greater than the first set threshold according to the IOT of all the PRBs, and determine whether the number of the screened PRBs is greater than a second preset number, if so, determine that the external interference of the system is blocking interference, otherwise, determine that the external interference of the system is stray interference.
Preferably, further comprising:
a third processing unit 33, configured to determine, according to the IOT of all the PRBs, that the out-of-system interference is GSM900 interference or DCS1800 interference if it is determined that the IOT of the PRBs with the third preset number is higher than the IOT of the remaining PRBs by a value greater than a second set threshold;
preferably, any one of the special subframes is subframe 1 or subframe 6.
Preferably, if the any one special subframe is subframe 1, the designated idle PRB is the first 4 PRBs of subframe 1;
if any special subframe is subframe 6, the designated idle PRB is 4 PRBs after subframe 6.
In summary, in the embodiments of the present invention, when a radio frame is received, any one special subframe included in the radio frame is determined, and the IOT of each designated idle PRB in the any one special subframe is obtained; according to the IOT of each appointed idle PRB, screening out the idle PRB of which the IOT is larger than a first set threshold value, judging whether the number of the screened idle PRB is larger than a first preset number, if so, judging that the interference exists outside the system, otherwise, judging that the interference exists or is not in the system, thus, according to the interference condition of the appointed idle PRB of the special subframe, judging the interference of the F frequency band, and quickly and accurately confirming the interference of the F frequency band of the TD-LTE system.
And further, the specific type of the external interference of the system is judged according to all PRBs of the special subframe, so that the interference of the F frequency band of the TD-LTE system can be effectively checked, and further corresponding processing can be performed according to different interference sources.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (14)
1. A method for judging interference of a time division long term evolution TD-LTE system is characterized by comprising the following steps:
when a radio frame is received, determining any one special subframe contained in the radio frame, and acquiring an interference measurement value IOT of each appointed idle physical resource block PRB in the any one special subframe;
and screening the idle PRBs of which the IOT is larger than a first set threshold value according to the IOT of each appointed idle PRB, judging whether the number of the screened idle PRBs is larger than a first preset number, if so, judging that the interference outside the system exists, and otherwise, judging that the interference inside the system exists or the interference does not exist.
2. The method according to claim 1, wherein obtaining the IOT for each designated idle PRB in any one special subframe specifically includes:
and acquiring the IOT of each appointed idle PRB in any one special subframe according to a preset period.
3. The method of claim 1, wherein after determining that there is an out-of-system interference, further comprising:
and obtaining the IOT of all PRBs of any one special subframe.
4. The method of claim 3, further comprising:
screening out PRBs of which the IOT is larger than the first set threshold value according to the IOT of all the PRBs, judging whether the number of the screened PRBs is larger than a second preset number, if so, judging that the external interference of the system is blocking interference, and otherwise, judging that the external interference of the system is stray interference.
5. The method of claim 3, further comprising:
and according to the IOTs of all PRBs, if the IOT of the PRBs with the third preset number is higher than the IOT of the other PRBs by more than a second set threshold value, determining that the out-of-system interference is GSM900 interference or DCS1800 interference.
6. The method of any one of claims 1-5, wherein any one of the special subframes is subframe 1 or subframe 6.
7. The method of claim 6, wherein if the any one special subframe is subframe 1, the designated idle PRB is the first 4 PRBs of subframe 1;
if the any special subframe is subframe 6, the designated idle PRB is 4 PRBs after the subframe 6.
8. An interference judging device for a time division long term evolution TD-LTE system is characterized by comprising the following components:
the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for determining any one special subframe contained in a wireless frame when the wireless frame is received, and acquiring an interference measurement value IOT of each appointed idle physical resource block PRB in the any one special subframe;
and the first processing unit is used for screening out the idle PRBs of which the IOT is greater than a first set threshold value according to the IOT of each appointed idle PRB, judging whether the number of the screened idle PRBs is greater than a first preset number, if so, judging that the interference outside the system exists, and otherwise, judging that the interference inside the system exists or the interference does not exist.
9. The apparatus according to claim 8, wherein when obtaining the IOT for each designated idle PRB in any one special subframe, the obtaining unit is specifically configured to:
and acquiring the IOT of each appointed idle PRB in any one special subframe according to a preset period.
10. The apparatus of claim 8, wherein after determining that there is an out-of-system interference, the acquisition unit is further to:
and obtaining the IOT of all PRBs of any one special subframe.
11. The apparatus of claim 10, further comprising:
and the second processing unit is used for screening out the PRBs of which the IOT is greater than the first set threshold value according to the IOT of all the PRBs, judging whether the number of the screened PRBs is greater than a second preset number, if so, judging that the external interference of the system is blocking interference, and otherwise, judging that the external interference of the system is stray interference.
12. The apparatus of claim 10, further comprising:
and a third processing unit, configured to determine, according to the IOT of all the PRBs, that the out-of-system interference is GSM900 interference or DCS1800 interference if it is determined that the IOT of the PRBs with the third preset number is higher than the IOT of the remaining PRBs by a value greater than a second set threshold.
13. The apparatus of any one of claims 8-12, wherein any one of the special subframes is subframe 1 or subframe 6.
14. The apparatus of claim 13, wherein if the any one special subframe is subframe 1, the designated idle PRB is the first 4 PRBs of subframe 1;
if the any special subframe is subframe 6, the designated idle PRB is 4 PRBs after the subframe 6.
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| WO2019100333A1 (en) * | 2017-11-24 | 2019-05-31 | 北京小米移动软件有限公司 | Method and device for indicating inter-modulation distortion, base station, and user equipment |
| CN109963304B (en) * | 2017-12-26 | 2022-04-29 | 中国移动通信集团山东有限公司 | Method and device for determining cell network interference classification based on MR data |
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