CN103517313A - Method for detecting interference signal and device thereof - Google Patents
Method for detecting interference signal and device thereof Download PDFInfo
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- CN103517313A CN103517313A CN201210211693.XA CN201210211693A CN103517313A CN 103517313 A CN103517313 A CN 103517313A CN 201210211693 A CN201210211693 A CN 201210211693A CN 103517313 A CN103517313 A CN 103517313A
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Abstract
The present invention discloses a method for detecting an interference signal and a device thereof. The method mainly comprises the following steps: when a downlink signal which is transmitted by a mobile communication base station is received, determining a resource unit for detecting according to frame structure information and a preset detection executing position from a physical resource which bears the downlink signal; detecting the receiving signal of the downlink signal which is bear on the determined resource unit; and the receiving power obtained through detection is larger than a first alarming threshold, and determining interference to the frequency resource which is used by the mobile communication base station. Because the position of the detected downlink signal in a system frame structure is fixed and the transmission power of the detected downlink signal is unchanged, whether the frequency resource used by the mobile communication base station can be determined through the comparing result between the receiving power of the downlink signal and the first alarming threshold under a precondition that stopping operation is not performed on the mobile communication base station of the system, thereby settling an existing problem that interference signal detection can be only performed after stopping operation on the mobile communication base station.
Description
Technical field
The present invention relates to mobile communication technology field, relate in particular to a kind of method and apparatus that detects interference signal
Background technology
During mobile communication system group net operation, owing to being subject to outside various interference, can cause the power of making an uproar in the end of system with respect to the power of its thermal noise, to have the lifting of certain amplitude.The lifting level of the power of making an uproar in the end is relevant to technical system and traffic load, for example, LTE(Long Term Evolution, LTE) system is when Network Programe Design, the power lifting of making an uproar in the up end of General Requirements is no more than 10dB, the power lifting of making an uproar of the descending end can be more greatly, can be up to 30dB-40dB.Under so strong back noise, performance number is difficult to be detected lower than the external interference signals of the power of making an uproar in the described end.
At present; in detecting mobile communication system working frequency range, detect while whether there is interference signal; in the less situation of the performance number of especially making an uproar at the bottom of the performance number of interference signal is with respect to mobile communication system receiver; in order performance number to be detected lower than the make an uproar interference signal of power of the described end; often need this mobile communication system Zhong mobile communication base station to carry out shutdown operation, i.e. stop signal transmitting.And carry out shutdown operation, can cause the stability of mobile communication system operation to reduce.If will detect for the interference signal in LTE system works frequency band, to performance number, not particularly that too large interference signal detects, also need the mobile communication base station of LTE system to carry out shutdown operation, just can carry out the detection of interference signal.
Summary of the invention
The embodiment of the present invention provides a kind of method and apparatus that detects interference signal, in order to solve in prior art, needs mobile communication base station to carry out shutdown operation, the problem that just can carry out the detection of interference signal.
A method for the detection interference signal of LTE, described method comprises:
When receiving the downstream signal of mobile communication base station transmission, from carrying the physical resource of described downstream signal, according to frame structure information and default detection executing location, be identified for the Resource Unit detecting, described frame structure information is to carry in the broadcast singal that sends of mobile communication base station, and described detection executing location represents that Resource Unit for carrying the downstream signal that position is fixed and transmitting power is constant is in frame structure Zhong position;
Detect the received power of the downstream signal carrying on definite Resource Unit;
When the received power obtaining in detection is greater than default alarming threshold value, determine that the presently used frequency resource in described mobile communication base station is interfered.
Detect a device for interference signal, described device comprises:
Signal acquisition module, the downstream signal and the broadcast singal that for receiving mobile communication base station, send, carried frame structure information in described broadcast singal;
Detect control module, for the default executing location that detects, described detection executing location represents that Resource Unit for carrying the downstream signal that position is fixed and transmitting power is constant is in frame structure Zhong position;
Signal analyse block, for from carrying the resource of described downstream signal, according to frame structure information and default detection executing location, is identified for the Resource Unit of detection, and detects the received power of the downstream signal carrying on definite Resource Unit;
Statistics output module, while being greater than the first default alarming threshold value for the received power obtaining in detection, determines that the presently used frequency resource in described mobile communication base station is interfered.
In the scheme of the embodiment of the present invention, due to detected downstream signal in system frame structure Zhong position, fix and transmitting power constant, therefore, in the situation that shutdown operation not being carried out in mobile communication system Zhong mobile communication base station, also can detect by the received power to described downstream signal, by the comparison of the received power detecting and alarming threshold value, and determine according to comparative result whether the presently used frequency resource in mobile communication base station is interfered, and then avoided mobile communication base station need to carry out shutdown operation, just can carry out the problem of the detection of interference signal.
Accompanying drawing explanation
Fig. 1 is the method flow schematic diagram of the detection interference signal in the embodiment of the present invention one;
Fig. 2 is the definite detection executing location schematic diagram in the embodiment of the present invention one;
Fig. 3 is GP in the embodiment of the present invention two position view in frame structure;
Fig. 4 is the structural representation of the device of the detection interference signal in the embodiment of the present invention three.
Embodiment
In the scheme of the embodiment of the present invention, determine when whether mobile communication base station is interfered, need not carry out shutdown operation to LTE system Zhong mobile communication base station, but LTE system frame structure Zhong position is fixed in utilization and the received power of the downstream signal that transmitting power is constant detects, in testing process, can not exert an influence to the communication of LTE system self, and when the received power detecting is greater than alarming threshold value, determine that the presently used frequency resource in described mobile communication base station is interfered, avoided needing mobile communication base station to carry out shutdown operation, just can carry out the problem of the detection of interference signal.
Embodiment mono-
As shown in Figure 1, a kind of method flow schematic diagram that detects interference signal for the LTE system that is applied in the embodiment of the present invention one, said method comprising the steps of:
Step 101: receive broadcast singal, master sync signal and auxiliary synchronous signals that mobile communication base station sends, carried frame structure information in described broadcast singal, carried synchronizing information in described master sync signal and auxiliary synchronous signals.
LTE system, according to the difference of duplex mode, is divided into time division duplex LTE(LTE-TDD) and Frequency Division Duplexing (FDD) LTE(LTE-FDD), different duplex modes has different frame structures.For time division duplex long evolving system, described frame structure information comprises: the configuration information of uplink and downlink timeslot and the configuration information of special time slot.
It should be noted that, receive master sync signal and auxiliary synchronous signals in this step 101, is preferred version of the present invention, and object is in order to obtain synchronizing information.
Step 102: receive the downstream signal that mobile communication base station sends.
Preferably, utilize described synchronizing information, in default downstream signal acquisition time, receive the downstream signal that mobile communication base station sends, described default downstream signal acquisition time is for carrying the transmitting time of the OFDM symbol under the Resource Unit of the downstream signal that position is fixed and transmitting power is constant.0.5/7 (ms) (each time slot is 0.5ms, has 7 OFDM symbols in each time slot) during the shared time resource of each OFDM symbol, the length of described downstream signal acquisition time can be set to 0.5/7 (ms).
Step 103: from the physical resource of bearing downlink signal, according to described frame structure information and default detection executing location, be identified for the Resource Unit detecting, described detection executing location represents that Resource Unit for carrying the downstream signal that position is fixed and transmitting power is constant is in frame structure Zhong position.
Preferably, in this step 103, the Resource Unit in order to be identified for accurately detecting, utilizes described synchronizing information, from the physical resource from bearing downlink signal, according to described frame structure information and default detection executing location, be identified for the Resource Unit detecting.
Take Resource Unit and according to the indication of upper layer network, distribute transmitting power as unit as different downstream signals in mobile communication base station, fix, and transmitting power is constant for carrying the Resource Unit of some downstream signal in frame structure Zhong position; And in frame structure Zhong position, be unfixed for carrying the Resource Unit of other downstream signals, or transmitting power is constant, this step 103 is utilized described for to carry the Resource Unit of some downstream signal be fixing in frame structure Zhong position and transmitting power is constant this feature, can accurately determine carry that position is fixed and the Resource Unit of the downstream signal that transmitting power is constant in frame structure Zhong position.
For LTE system, the downstream signal that position is fixed and transmitting power is constant in frame structure comprises: downlink reference signal (Reference Signal, RS).Described descending RS fixes position, is arranged in radio frames, on the 1st OFDM of each descending time slot (Orthogonal Frequency Division Multiplexing, OFDM) symbol and the 3rd OFDM symbol reciprocal.For TD-LTE system, according to frame structure information, can determine that descending time slot is in radio frames Zhong position, knowing that descending time slot is behind radio frames Zhong position, according to detecting executing location information, can determine detection executing location.
For example, in LTE system, to two-port (port 0, port one) antenna, definite detection executing location is the position at the Resource Unit place in the dotted line frame in Fig. 2, in Fig. 2, and R
0represent the reference signal in antenna port 0, R
1reference signal in antenna port 1, the Resource Unit shown in Fig. 2 takies the time resource of an OFDM symbol in time domain, takies the frequency resource of the bandwidth of 1 subcarrier on frequency domain.
General, for carrying the number of the Resource Unit of the downstream signal that position is fixed and transmitting power is constant, be greater than 1, therefore, in this step 103, determine for detection of the number of Resource Unit be greater than 1.
If use the preferred steps in step 102, in this step 103, due to the downstream signal negligible amounts receiving, and must comprise the downstream signal that described carrying position is fixed and transmitting power is constant, therefore can, faster from the physical resource of bearing downlink signal, be identified for the Resource Unit detecting.
Step 104: the received power that detects the downstream signal carrying on definite Resource Unit.
Concrete, in this step 104, the received power of the downstream signal carrying on Resource Unit definite in the Resource Unit of the downstream signal receiving in carrying step 101 is detected.
Preferably, in this step 104, record detects t detection time of the received power of the downstream signal carrying on each Resource Unit of determining, and determines the received power A(t that t detection obtains in this detection time).
Step 105: judgement detects the received power obtaining and whether is greater than the first default alarming threshold value, if, determine that the presently used frequency resource in described mobile communication base station is interfered, if not, determine that the presently used frequency resource in described mobile communication base station is not interfered or the interference level that is subject to is lower.
The size of the interference power values that described the first alarming threshold value can still be tolerated according to LTE system is set.
Because the transmitting power of the downstream signal carrying on Resource Unit definite in step 104 is constant, therefore, can determine whether the presently used frequency resource in mobile communication base station is interfered according to the received power of this downstream signal obtaining in this step 105, if when not being interfered or interference level is lower, described received power will be not more than the first alarming threshold value.
Preferably, for the interference type of determining that the presently used frequency resource in mobile communication base station is subject to, described method also comprises:
When all received powers that obtain in detection are all greater than default received power threshold value, determine that the presently used frequency resource in described mobile communication base station is subject to continuous interference;
When the part received power obtaining in detection is greater than default received power threshold value, determine that the presently used frequency resource in described mobile communication base station is subject to discontinuous interference.
When described received power threshold value can Wei mobile communication base station be interfered, the received power value of the downstream signal carrying on described definite Resource Unit.
When all received powers that obtain in detection are all greater than default received power threshold value, may there are two types of interference signals: a kind of is continuous signal, the integral multiple that is spaced apart the periodicity discontinuous signal cycle of a periodically discontinuous signal, and the detection time of record.Here by the interference of described periodicity discontinuous signal also referred to as continuous interference, this be because: when practical application, do not carrying out clock or other modes synchronous in the situation that, interference signal and between detection time the probability of precise synchronization very little, what therefore, within one longer period, all can detect can get rid of the possibility for the discontinuous interference of periodicity.
Described discontinuous interference comprises bursty interference, and the pulse duration that the probability of bursty interference and time of origin, probability of occurrence and the interference signal of bursty interference signal detected has certain relation.
Consider that there is certain limit mobile communication base station to the tolerance of the intensity of interference signal, when the intensity of interference signal exceeds the tolerance limit of mobile communication base station, when the frequency resource that mobile communication base station is used bearing strength to surpass the interference signal of its tolerance limit is carried out the transmission of signal, cannot guarantee communication quality, therefore, in order to ensure communication quality, preferably, the received power obtaining in detection is greater than after the first default alarming threshold value, and described method also comprises:
Determine the received power that is greater than the first default alarming threshold value, and for each received power of determining, judge whether this received power is also greater than the first handoff threshold value, described the first handoff threshold value is greater than the first alarming threshold value;
If be greater than the first handoff threshold value, indicate described mobile communication base station to stop using presently used frequency resource.
Described the first alarming threshold value and the first handoff threshold value can be determined according to the concrete service application of mobile communication system, when if the service application of mobile communication system is mainly non-real-time service (as: data service), the first alarming threshold value and the first handoff threshold value are higher, when if the service application of mobile communication system is mainly real time business (as: speech business), the first alarming threshold value and the first handoff threshold value are lower.
Preferably, if receive the downstream signal that mobile communication base station sends in default downstream signal acquisition time in step 102, in above-mentioned steps 105, can arrange one and detect timing time slip-window, time window length is T, when time window is to constantly, determine the quantity that is greater than the first default alarming threshold value in all received powers that in time window, detection obtains, and when described quantity is greater than the first default warning count threshold value, to described mobile communication base station, sending interference warning information, in described quantity, be less than the first default warning count threshold value and be greater than at 0 o'clock, determine the be interfered interference of signal of the presently used frequency resource in described mobile communication base station, in described quantity, it is 0 o'clock, determine the be not interfered interference of signal of the presently used frequency resource in described mobile communication base station.
In the scheme of the embodiment of the present invention one, utilization is in LTE system, frame structure position fix and the received power of the downstream signal that transmitting power is constant (concrete to the presently used frequency resource in mobile communication base station, for FDD-LTE, it is the presently used downstream frequency resource in mobile base station, and the corresponding upstream frequency resource of this downstream frequency resource, for TD-LTE, be the presently used frequency resource in mobile base station) whether be interfered and detect, therefore, solved and need to carry out shutdown operation and the communication service that causes is interrupted to LTE system Zhong mobile communication base station, and the impact that user's communication is caused, further, scheme in the embodiment of the present invention one is also according to testing result, to the described mobile communication base station of indication, stop using presently used frequency resource, now, the frequency resource that has severe jamming can not used in mobile communication base station, and use not exist, disturb or disturb less frequency resource, and then guaranteed communication quality.
Embodiment bis-
The method of the detection interference signal in above-described embodiment one both can be applicable in TD-LTE system; also can be applicable in FDD-LTE system; consider in the frame structure of TD-LTE system; protection interval GP does not carry out the feature of the transmission of signal; also can detect by detecting the received power of the temporal signal in GP place (signal is now interference signal), and then whether the presently used frequency resource in definite TD-LTE system Zhong mobile communication base station is interfered.In the embodiment of the present invention two, utilize the joint-detection to the received power of the temporal signal in received power HeGP place of the downstream signal that position in frame structure is fixed and transmitting power is constant, determine whether the presently used frequency resource in TD-LTE system Zhong mobile communication base station is interfered.
A kind of method that detects interference signal that the embodiment of the present invention two provides, said method comprising the steps of:
The first step: receive broadcast singal, master sync signal and auxiliary synchronous signals that mobile communication base station sends, carried frame structure information in described broadcast singal, carried synchronizing information in described master sync signal and auxiliary synchronous signals.
Second step: receive the downstream signal that mobile communication base station sends.
The 3rd step: carry out the operation of the step 103 ~ step 105 in embodiment mono-, and carry out the following received power value of the signal (being interference signal) on GP that utilizes simultaneously and determine whether the presently used frequency resource in mobile communication base station exists the operation of interference:
1) according to frame structure information, determine and detect the time of implementation; the described detection time of implementation is the time of protecting interval GP shared in radio frames; described frame structure information is to carry in the broadcast singal that sends of mobile communication base station; in described frame structure information, carried the positional information of protection interval GP; due to the positional information in frame structure, using by time and frequency representation, is also in described frame structure information, to have carried the shared temporal information of GP.
In order accurately to determine described the detections time of implementation, preferably, according to synchronizing information, keep and the synchronizeing of LTE system time, and on described synchronous basis, according to frame structure information definite detection time of implementation.
Owing to not carrying out the transmission of TD-LTE signal on GP, noise level is minimum.Therefore, can detect the received power of the signal of its shared temporal reception, to determine whether to exist interference.The lifting of the low noise power of avoiding Liao Yue district to disturb bringing due to GP rear end; therefore; preferably; above-mentioned according to frame structure information definite detection time of implementation; the described detection time of implementation is in radio frames, to protect the shared time of GP rear end, interval, and described GP can determine rear end based on experience value.
2) within definite detection time of implementation, detect and whether have signal;
3), when signal having been detected, detect the received power of described signal;
4) when the received power of the described signal obtaining in detection is greater than the second default alarming threshold value, determine that the presently used frequency resource in described mobile communication base station is interfered, described the first alarming threshold value is greater than the second alarming threshold value; When the received power of the described signal obtaining in detection is greater than the second default alarming threshold value, determine that the presently used frequency resource in described mobile communication base station is interfered, described the first alarming threshold value is greater than the second alarming threshold value.
Concrete, TD-LTE frame structure ZhongGP position is as shown in Figure 3.
Preferably, the received power obtaining in detection is greater than after the first default alarming threshold value, and described method also comprises:
Determine the received power that is greater than the first default alarming threshold value, and for each received power of determining, judge whether this received power is also greater than the first handoff threshold value;
If be greater than the first handoff threshold value, indicate described mobile communication base station to stop using presently used frequency resource;
Preferably, the received power obtaining in detection is greater than after the second default alarming threshold value, and described method also comprises:
Whether the received power of determining described signal is also greater than the second handoff threshold value, and described the second handoff threshold value is greater than described the second alarming threshold value, and described the first handoff threshold value is greater than the second handoff threshold value;
If be greater than the second handoff threshold value, indicate described mobile communication base station to stop using presently used frequency resource.
It should be noted that, mobile communication base station is only used the component frequency resource in band system band at any one time, and other frequency resources in band system band, after stopping using presently used frequency resource, can be used in above-mentioned mobile communication base station.
Preferably, if mobile communication base station receives the downstream signal that mobile communication base station sends in default downstream signal acquisition time in above-mentioned second step, in above-mentioned the 3rd step, can arrange one and detect timing time slip-window, time window length is T, when time window is to constantly, determine the quantity that is greater than the first default alarming threshold value in the interior all received powers that obtain for the detection of the fixing downstream signal in position in frame structure of time window, and determine that the received power for the signal on GP detects the quantity that is greater than the second alarming threshold value in all received powers that obtain, and when the quantity of described the first alarming threshold value and the quantity sum of the second alarming threshold value are greater than default warning count threshold value, to described mobile communication base station, sending interference warning information, in described quantity, be less than default warning count threshold value and be greater than at 0 o'clock, determine that the presently used frequency resource in described mobile communication base station is interfered, in described quantity, it is 0 o'clock, determine the be not interfered interference of signal of the presently used frequency resource in described mobile communication base station.
In the scheme of the embodiment of the present invention two, owing to having utilized fixing and the joint-detection of the received power of the downstream signal that transmitting power is constant and the received power of the signal on GP determines whether described mobile communication base station is interfered there is interfering process in used frequency resource in position in frame structure, and when the received power that position is fixed and the received power of the downstream signal that transmitting power is constant is greater than the signal on the first handoff threshold value and/or GP in frame structure is greater than the second handoff threshold value, all to described mobile communication base station, send indication information, mobile communication base station is stopped using and had the frequency resource of disturbing, therefore, can better ensure communication quality.
Embodiment tri-
As shown in Figure 4, the structural representation for the device of the detection interference signal that provides in the embodiment of the present invention three, comprising: signal acquisition module 11, detect control module 12, signal analyse block 13 and statistics output module 14, wherein:
Signal acquisition module 11, the downstream signal and the broadcast singal that for receiving mobile communication base station, send, carried frame structure information in described broadcast singal;
Detect control module 12, for the default executing location that detects, described detection executing location represents that Resource Unit for carrying the downstream signal that position is fixed and transmitting power is constant is in frame structure Zhong position.
The mode such as can write by program, USB interface transmission, serial ports write is modified to detecting the detection executing location of control module 12.
Signal analyse block 13, for from carrying the resource of described downstream signal, according to frame structure information and default detection executing location, is identified for the Resource Unit of detection, and detects the received power of the downstream signal carrying on definite Resource Unit.
Statistics output module 14, while being greater than the first default alarming threshold value for the received power obtaining in detection, determines that the presently used frequency resource in described mobile communication base station is interfered.
Preferably, described device also comprises: synchronization module 15, and the master sync signal and the auxiliary synchronous signals that for receiving base station, send, carry out Decoding Analysis processing to described master sync signal and auxiliary synchronous signals, obtains synchronizing information;
Described signal acquisition module 11, also for utilizing the synchronizing information of synchronization module 15 to keep synchronizeing with LTE system.
Preferably, described statistics output module 14, while being also all greater than default received power threshold value for all received powers that obtain in detection, determines that the presently used frequency resource in described mobile communication base station is subject to continuous interference; When the part received power obtaining in detection is greater than default received power threshold value, determine that the presently used frequency resource in described mobile communication base station is subject to discontinuous interference.
Preferably, described statistics output module 14, also for determining the received power that is greater than the first default alarming threshold value, and for each received power of determining, judge whether this received power is also greater than the first handoff threshold value, described the first handoff threshold value is greater than the first alarming threshold value; If be greater than the first handoff threshold value, indicate described mobile communication base station to stop using presently used frequency resource.
Preferably, described signal analyse block 13 also, for determining and detect the time of implementation according to frame structure information, detects and whether has signal within definite detection time of implementation; When signal having been detected, detect the received power of described signal, the described detection time of implementation is the time of protecting interval GP shared in radio frames, described the first alarming threshold value is greater than the second alarming threshold value;
Described statistics output module 14, also when obtaining the received power of described signal in detection and be greater than the second default alarming threshold value, determine that the presently used frequency resource in described mobile communication base station is interfered, described the first alarming threshold value is greater than the second alarming threshold value.
Preferably, described statistics output module 14, also for determining the received power that is greater than the first default alarming threshold value, and for each received power that is greater than the first default alarming threshold value of determining, judge whether this received power is also greater than the first handoff threshold value, if be greater than the first handoff threshold value, indicate described mobile communication base station to stop using presently used frequency resource, and determine whether the received power of described signal is also greater than the second handoff threshold value; If be greater than the second handoff threshold value, indicate described mobile communication base station to stop using presently used frequency resource, described the second handoff threshold value is greater than described the second alarming threshold value, and described the first handoff threshold value is greater than the second handoff threshold value.
It should be noted that, device in the present embodiment three can be for the Interference Detection of TD-LTE system, also can be applied in the detection of FDD-LTE, due to any one in the detection method that can use for TD-LTE described in embodiment mono-and embodiment bis-, therefore, for the convenient detection method that described device is used is controlled, described detection control module 12, also for receiving, detect execution pattern instruction, described detection execution pattern can detect or fixed transmission power adds GP joint-detection for fixed transmission power, when described instruction is fixed transmission power detection, notification signal analysis module detects executing location: carrying position fix and the Resource Unit of the downstream signal that transmitting power is constant in frame structure Zhong position, when described instruction is that fixed transmission power adds GP joint-detection, notification signal analysis module detects executing location: for the Resource Unit that carries the downstream signal that position is fixed and transmitting power is constant, in frame structure Zhong position, and notification signal analysis module detects the power of the signal on GP.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. a method that is applied to the detection interference signal of long evolving system LTE, is characterized in that, described method comprises:
When receiving the downstream signal of mobile communication base station transmission, from carrying the physical resource of described downstream signal, according to frame structure information and default detection executing location, be identified for the Resource Unit detecting, described frame structure information is to carry in the broadcast singal that sends of mobile communication base station, and described detection executing location represents that Resource Unit for carrying the downstream signal that position is fixed and transmitting power is constant is in frame structure Zhong position;
Detect the received power of the downstream signal carrying on definite Resource Unit;
When the received power obtaining in detection is greater than the first default alarming threshold value, determine that the presently used frequency resource in described mobile communication base station is interfered.
2. the method for claim 1, is characterized in that, described method also comprises:
When all received powers that obtain in detection are all greater than default received power threshold value, determine that the presently used frequency resource in described mobile communication base station is subject to continuous interference;
When the part received power obtaining in detection is greater than default received power threshold value, determine that the presently used frequency resource in described mobile communication base station is subject to discontinuous interference.
3. the method for claim 1, is characterized in that, the received power obtaining in detection is greater than after the first default alarming threshold value, and described method also comprises:
Determine the received power that is greater than the first default alarming threshold value, and for each received power of determining, judge whether this received power is also greater than the first handoff threshold value, described the first handoff threshold value is greater than the first alarming threshold value;
If be greater than the first handoff threshold value, indicate described mobile communication base station to stop using presently used frequency resource.
4. the method for claim 1, is characterized in that, described method also comprises:
According to frame structure information, determine and detect the time of implementation, the described detection time of implementation is the time of protecting interval GP shared in radio frames;
Within definite detection time of implementation, detect and whether have signal;
When signal having been detected, detect the received power of described signal;
When the received power of the described signal obtaining in detection is greater than the second default alarming threshold value, determine that the presently used frequency resource in described mobile communication base station is interfered, described the first alarming threshold value is greater than the second alarming threshold value.
5. method as claimed in claim 4, is characterized in that, the received power obtaining in detection is greater than after the first default alarming threshold value, and described method also comprises:
Determine the received power that is greater than the first default alarming threshold value, and for each received power that is greater than the first default alarming threshold value of determining, judge whether this received power is also greater than the first handoff threshold value, described the first handoff threshold value is greater than the first alarming threshold value;
If be greater than the first handoff threshold value, indicate described mobile communication base station to stop using for carrying the shared frequency resource of Resource Unit of the downstream signal that position is fixed and transmitting power is constant;
The received power obtaining in detection is greater than after the second default alarming threshold value, and described method also comprises:
Whether the received power of determining described signal is also greater than the second handoff threshold value, and described the second handoff threshold value is greater than described the second alarming threshold value, and described the first handoff threshold value is greater than the second handoff threshold value;
If be greater than the second handoff threshold value, indicate described mobile communication base station to stop using presently used frequency resource.
6. a device that detects interference signal, is characterized in that, described device comprises:
Signal acquisition module, the downstream signal and the broadcast singal that for receiving mobile communication base station, send, carried frame structure information in described broadcast singal;
Detect control module, for the default executing location that detects, described detection executing location represents that Resource Unit for carrying the downstream signal that position is fixed and transmitting power is constant is in frame structure Zhong position;
Signal analyse block, for from carrying the resource of described downstream signal, according to frame structure information and default detection executing location, is identified for the Resource Unit of detection, and detects the received power of the downstream signal carrying on definite Resource Unit;
Statistics output module, while being greater than the first default alarming threshold value for the received power obtaining in detection, determines that the presently used frequency resource in described mobile communication base station is interfered.
7. device as claimed in claim 6, is characterized in that,
Described statistics output module, while being also all greater than default received power threshold value for all received powers that obtain in detection, determines that the presently used frequency resource in described mobile communication base station is subject to continuous interference; When the part received power obtaining in detection is greater than default received power threshold value, determine that the presently used frequency resource in described mobile communication base station is subject to discontinuous interference.
8. device as claimed in claim 6, is characterized in that,
Described statistics output module, also for determining the received power that is greater than the first default alarming threshold value, and for each received power of determining, judging whether this received power is also greater than the first handoff threshold value, described the first handoff threshold value is greater than the first alarming threshold value; If be greater than the first handoff threshold value, indicate described mobile communication base station to stop using presently used frequency resource.
9. device as claimed in claim 6, is characterized in that,
Described signal analyse block also, for determining and detect the time of implementation according to frame structure information, detects and whether has signal within definite detection time of implementation; When signal having been detected, detect the received power of described signal, the described detection time of implementation is the time of protecting interval GP shared in radio frames, described the first alarming threshold value is greater than the second alarming threshold value;
Statistics output module, also when obtaining the received power of described signal in detection and be greater than the second default alarming threshold value, determine that the presently used frequency resource in described mobile communication base station is interfered, described the first alarming threshold value is greater than the second alarming threshold value.
10. device as claimed in claim 9, is characterized in that,
Described statistics output module, also for determining the received power that is greater than the first default alarming threshold value, and for each received power that is greater than the first default alarming threshold value of determining, judge whether this received power is also greater than the first handoff threshold value, if be greater than the first handoff threshold value, indicate described mobile communication base station to stop using presently used frequency resource, and determine whether the received power of described signal is also greater than the second handoff threshold value; If be greater than the second handoff threshold value, indicate described mobile communication base station to stop using presently used frequency resource, described the second handoff threshold value is greater than described the second alarming threshold value, and described the first handoff threshold value is greater than the second handoff threshold value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210211693.XA CN103517313B (en) | 2012-06-21 | 2012-06-21 | A kind of method and apparatus detecting interference signal |
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| CN110031797A (en) * | 2019-04-18 | 2019-07-19 | 电子科技大学 | For passive sensor-based system to the detecting and tracking method with discontinuous characteristic target |
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