CN105991270A

CN105991270A - Method of reducing interference and equipment

Info

Publication number: CN105991270A
Application number: CN201510072800.9A
Authority: CN
Inventors: 任斌; 李向宁; 李琼
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2015-02-11
Filing date: 2015-02-11
Publication date: 2016-10-05
Anticipated expiration: 2035-02-11
Also published as: WO2016127762A1; CN105991270B

Abstract

Embodiments of the invention relate to the wireless communication technology field and especially relate to a method of reducing an interference and equipment. The method and the equipment are used for reducing an interference received by a channel fixed to a fixed position of a full bandwidth aiming at a resource mapping position of a frequency domain. In the embodiments, according to a sub-band width which does not have a strong interference, a total effectively PRB number of a current downlink is updated and a terminal is notified; or in the embodiments, after the sub-band width under the strong interference is determined, the terminal can carry out channel estimation processing on the sub-band width under the strong interference or process a signal received by the sub-band width under the strong interference. Therefore, an interference problem and a man-made malicious interference problem of other communication system on a same frequency band are solved; a capability of the channel which is fixed to the fixed position of the full bandwidth aiming at the resource mapping position of the frequency domain to resist a part of bandwidth interference is effectively increased; and the interference received by the channel fixed to the fixed position of the full bandwidth aiming at the resource mapping position of the frequency domain is reduced.

Description

A kind of method and apparatus reducing interference

Technical field

The present invention relates to wireless communication technology field, particularly to a kind of method and apparatus reducing interference.

Background technology

The modulation technique of LTE (Time Division-Long Term Evolution, Long Term Evolution) system is adopted With OFDM (Orthogonal Frequency Division Multiplexing, OFDM), under Row OFDMA (multiple access technology employing orthogonal frequency-time multiple access).Down control channel includes PCFICH (Physical Control Format Indication Channel, Physical Control Format Indicator Channel)/PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel)/PHICH (Physical HARQ Indication Channel, physical mixed automatic repeat request instruction channel), carry data respectively The control information of channel, is by follow-up data channel and normally receives the basis of process.Public affairs at 700MHz Altogether in secure communication applications, other sector application and the application of military communication field, typical conflicting mode is wide Band noise jamming, part band noise jamming, single tone jamming and Multi-tone jamming, interference signal characteristic is shown in Fig. 1.

LTE system is wide-band mobile communication system, is currently more and more applied in the whole world.But In the public safety communication application of such as 700MHz and other sector application (such as military communication field), One significant drawback is to be easier to be disturbed and artificial malice by other communication system on same frequency band Interference.According to the definition of LTE system, the down control channel such as PCFICH/PDCCH/PHICH is terminal Access network and provide the user the basic function of miscellaneous service, PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) carrying customer service.PDSCH and PUSCH can use up-downgoing flexibly Dispatching technique hides interference effectively；The frequency domain money of the down control channels such as PCFICH/PDCCH/PHICH Source mapping position is fixing, it is impossible to avoid interference by the way of scheduling or frequency hopping；Once it is by dry Disturb, data channel will be caused to normally receive, it is impossible to normally work.

In sum, for channels such as PCFICH/PDCCH/PHICH, due to the resource mapped bits of frequency domain Put the fixed position being fixed on full bandwidth, for interference and the artificial malicious interference of other communication system, at present There is no effective solution.

Summary of the invention

The present invention provides a kind of method and apparatus reducing interference, in order to reduce the resource mapped bits for frequency domain Put the channel experienced interference of the fixed position being fixed on full bandwidth.

A kind of method reducing interference that the embodiment of the present invention provides, including:

Network equipment judges to access on the subband width in the carrier wave in frequency range whether there is strong jamming；

Described network equipment determines and all there is not total Physical Resource Block that strongly disturbing subband width comprises The number of PRB；

Total PRB number that strongly disturbing subband width comprises is there is not in described network equipment according to all, Update effective PRB number that current downlink is total；

Described network equipment will update after the total effective PRB number of current downlink and do not exist capable and experienced The position informing terminal that the subband disturbed is wide.

Whether deposit it is preferred that described network equipment judges to access on the subband width in the carrier wave in frequency range Before strong jamming, also include:

Described network equipment sets up M1 carrier wave in accessing frequency range；

Described network equipment is divided into N1 sub-bandwidth each carrier wave；

Wherein, M1 and N1 is positive integer.

It is preferred that described network equipment is divided into N1 sub-bandwidth each carrier wave, including:

Each carrier wave, according to available system bandwidth, is divided into N1 sub-bandwidth, wherein by described network equipment The wide size of each subband determines according to all available system bandwidth, and no more than current carrier use be Regiment commander's width；Or

Each carrier wave is divided into N1 sub-bandwidth by described network equipment, and the most each subband width comprises PRB number is identical.

Whether deposit it is preferred that described network equipment judges to access on the subband width in the carrier wave in frequency range In strong jamming, including:

For a sub-bandwidth, described network equipment judges parameter according to the strong jamming that described subband is wide, really Determine PRB ratio or number that described subband width is interfered；

If the wide PRB ratio being interfered of described subband judges, more than strong jamming, the first thresholding that parameter is corresponding Value or the wide PRB number being interfered of described subband judge, more than strong jamming, the second threshold value that parameter is corresponding, Then determine and there is strong jamming on described subband width；Otherwise determine and there is not strong jamming on described subband width.

It is preferred that described network equipment judges parameter according to the strong jamming that subband is wide, determine described subband width The PRB ratio being interfered, including:

Described strong jamming judges that parameter is Signal to Interference plus Noise Ratio, and described network equipment determines PRB in described subband width Upper Signal to Interference plus Noise Ratio value is not more than the number of Signal to Interference plus Noise Ratio threshold value, and by the number that determines divided by described subband width The PRB number comprised, obtains the PRB ratio that described subband width is interfered；Or

Described strong jamming judges that parameter is dry ratio of making an uproar, and described network equipment determines PRB in described subband width Upper dry ratio of making an uproar is not less than the dry ratio number of threshold value of making an uproar, and the number determined is comprised divided by described subband width PRB number, obtain the PRB ratio that described subband width is interfered；Or

Described strong jamming judges that parameter is signal interference ratio, and described network equipment determines PRB in described subband width Upper signal interference ratio value is not more than the number of signal interference ratio threshold value, and the number determined is comprised divided by described subband width PRB number, obtain the PRB ratio that described subband width is interfered；Or

Described strong jamming judges that parameter is jamming power, and described network equipment determines PRB in described subband width Upper interference power values is not less than the number of jamming power threshold value, and by the number that determines divided by described subband width The PRB number comprised, obtains the PRB ratio that described subband width is interfered.

Whether deposit it is preferred that described network equipment judges to access on the subband width in the carrier wave in frequency range After strong jamming, also include:

If judging for X time continuously to access whether there is strong jamming, all on the subband width in the carrier wave in frequency range Not finding not by strongly disturbing subband width, the most described network equipment alerts to high level；

Wherein, X is positive integer.

The another kind of method reducing interference that the embodiment of the present invention provides, including:

Subscriber equipment receive from network equipment notice the total effective PRB number of current downlink and There is not the position informing terminal that strongly disturbing subband is wide, effective PRB number that wherein current downlink is total is Access and there is not, on the subband width in the carrier wave in frequency range, total PRB that strongly disturbing subband width comprises Number；

Described subscriber equipment is according to the total effective PRB number of the current downlink received and there is not strong jamming The wide position of subband, be received processing.

A kind of network equipment reducing interference that the embodiment of the present invention provides, this network equipment includes:

Whether the first judge module, exist by force for judging to access on the subband width in the carrier wave in frequency range Interference；

Number determines module, all does not have total PRB's that strongly disturbing subband width comprises for determining Number；

More new module, for there is not, according to all, total PRB number that strongly disturbing subband width comprises, Update effective PRB number that current downlink is total；

Notification module, is used for the total effective PRB number of the current downlink after updating and does not exist capable and experienced The position informing terminal that the subband disturbed is wide.

It is preferred that described first judge module is additionally operable to:

Before judging whether to there is strong jamming on the subband width in the carrier wave in access frequency range, accessing frequency M1 carrier wave is set up in the range of rate；Each carrier wave is divided into N1 sub-bandwidth；

Wherein, M1 and N1 is positive integer.

It is preferred that described first judge module specifically for:

According to available system bandwidth, each carrier wave is divided into N1 sub-bandwidth, wide big of the most each subband Little determine according to all available system bandwidth, and the system bandwidth that no more than current carrier uses；Or

Each carrier wave is divided into N1 sub-bandwidth, and the PRB number that the most each subband width comprises is identical.

It is preferred that described first judge module specifically for:

For a sub-bandwidth, judge parameter according to the strong jamming that described subband is wide, determine that described subband width is subject to PRB ratio or number to interference；

It is preferred that described first judge module specifically for:

Described strong jamming judges that parameter is Signal to Interference plus Noise Ratio, determines in described subband width Signal to Interference plus Noise Ratio value on PRB It is not more than the number of Signal to Interference plus Noise Ratio threshold value, and the PRB number determined comprised divided by described subband width Number, obtains the PRB ratio that described subband width is interfered；Or

Described strong jamming judges that parameter is dry ratio of making an uproar, and determines that on PRB, dry ratio of making an uproar is the least in described subband width In the dry ratio number of threshold value of making an uproar, and the PRB number that the number determined is comprised divided by described subband width, Obtain the PRB ratio that described subband width is interfered；Or

Described strong jamming judges that parameter is signal interference ratio, determines that on PRB, signal interference ratio value is little in described subband width In the number of signal interference ratio threshold value, and the PRB number that the number determined is comprised divided by described subband width, Obtain the PRB ratio that described subband width is interfered；Or

Described strong jamming judges that parameter is jamming power, determines in described subband width interference power values on PRB Not less than the number of jamming power threshold value, and the PRB that the number determined is comprised divided by described subband width Number, obtains the PRB ratio that described subband width is interfered.

It is preferred that described first judge module is additionally operable to:

If judging for X time continuously to access whether there is strong jamming, all on the subband width in the carrier wave in frequency range Do not find not by strongly disturbing subband width, then alert to high level；

Wherein, X is positive integer.

A kind of subscriber equipment reducing interference that the embodiment of the present invention provides, this subscriber equipment includes:

Receiver module, individual for receiving the effective PRB from the current downlink of network equipment notice is total Count and there is not the position informing terminal that strongly disturbing subband is wide, effective PRB that wherein current downlink is total Number is to access do not have on the subband width in the carrier wave in frequency range that strongly disturbing subband width comprises total PRB number；

First processing module, for the effective PRB number total according to the current downlink received and does not exists The position that strongly disturbing subband is wide, is received processing.

Subscriber equipment judges to access on the subband width in the carrier wave in frequency range whether there is strong jamming；

Described subscriber equipment, after determining and having by strongly disturbing subband width, enters by strongly disturbing subband width Row channel estimation process or the signal received by strongly disturbing subband width is processed.

Whether exist it is preferred that described subscriber equipment judges to access on the subband width in the carrier wave in frequency range Strong jamming, including:

The strong jamming of all subcarriers at least one sub-bandwidth is judged the average of parameter by described subscriber equipment Value judges that with strong jamming threshold value corresponding to parameter compares, and judges to access frequency range according to comparative result Whether strong jamming is there is on the interior subband width in carrier wave.

It is preferred that described strong jamming judges that parameter includes one of the following:

Signal to Interference plus Noise Ratio, dry ratio, signal interference ratio and the jamming power of making an uproar.

Described subscriber equipment judges parameter according to the strong jamming that subband is wide, determines that at least one subband width is by dry The PRB ratio disturbed or number；

If described PRB ratio or number judge, more than strong jamming, the threshold value that parameter is corresponding, it is determined that described Strong jamming is there is at least one subband width；Do not exist capable and experienced at least one subband width described in otherwise determining Disturb.

It is preferred that described subscriber equipment judges parameter according to the strong jamming that subband is wide, determine at least one subband The PRB ratio that width is interfered, including:

Described strong jamming judges that parameter is Signal to Interference plus Noise Ratio, and described subscriber equipment determines PRB in described subband width Upper Signal to Interference plus Noise Ratio value is not more than the number of Signal to Interference plus Noise Ratio threshold value, and by the number that determines divided by described subband width The PRB number comprised, obtains the PRB ratio that described subband width is interfered；Or

Described strong jamming judges that parameter is dry ratio of making an uproar, and described subscriber equipment determines in described subband width on PRB Dry ratio of making an uproar is not less than the dry ratio number of threshold value of making an uproar, and the number determined is comprised divided by described subband width PRB number, obtains the PRB ratio that described subband width is interfered；Or

Described strong jamming judges that parameter is signal interference ratio, and described subscriber equipment determines in described subband width on PRB Signal interference ratio value is not more than the number of signal interference ratio threshold value, and the number determined is comprised divided by described subband width PRB number, obtains the PRB ratio that described subband width is interfered；Or

Described strong jamming judges that parameter is jamming power, and described subscriber equipment determines PRB in described subband width Upper interference power values is not less than the number of jamming power threshold value, and by the number that determines divided by described subband width The PRB number comprised, obtains the PRB ratio that described subband width is interfered.

It is preferred that described subscriber equipment carries out channel estimation process to by strongly disturbing subband width, including:

When signal by being received by strongly disturbing PRB is processed by described subscriber equipment, to being subject to The channel estimation results of strongly disturbing PRB is set to set numerical value, to reduce interference for be detected useful Send the impact of signal；

The signal received by strongly disturbing subband width is processed by described subscriber equipment, including:

When signal by being received by strongly disturbing PRB is processed by described subscriber equipment, to being subject to The reception signal of strongly disturbing PRB is set to set numerical value, to reduce interference for useful transmission to be detected The impact of signal.

A kind of subscriber equipment reducing interference that the embodiment of the present invention provides, the method includes:

Whether the second judge module, exist by force for judging to access on the subband width in the carrier wave in frequency range Interference；

Second processing module, for after determining and having by strongly disturbing subband width, to by strongly disturbing son Bandwidth carries out channel estimation process or processes the signal by being received by strongly disturbing subband width.

It is preferred that described second judge module specifically for:

The strong jamming of all subcarriers at least one sub-bandwidth is judged that the meansigma methods of parameter is sentenced with strong jamming Threshold value corresponding to disconnected parameter compares, and judges to access in the carrier wave in frequency range according to comparative result Whether strong jamming is there is on subband width.

It is preferred that described second judge module specifically for:

Judge parameter according to the strong jamming that subband is wide, determine the PRB ratio that at least one subband width is interfered Example or number；

It is preferred that described second judge module specifically for:

It is preferred that described second processing module specifically for:

When signal by being received by strongly disturbing PRB is processed, to by strongly disturbing PRB Channel estimation results be set to set numerical value, to reduce interference for the shadow of useful transmission signal to be detected Ring；Or

When signal by being received by strongly disturbing PRB is processed, to by strongly disturbing PRB Reception signal be set to set numerical value, to reduce interference for the impact of useful transmission signal to be detected.

Owing to the embodiment of the present invention can update total the having of current downlink according to there is not strongly disturbing subband width Effect PRB number, and notify terminal；Or embodiment of the present invention terminal can have by strong jamming determining Subband width after, carry out channel estimation process or to by by strong jamming to by strongly disturbing subband width The signal that receives of subband width process, thus solve the interference of other communication system on same frequency band and ask Topic and artificial malicious interference problem, be effectively improved the resource mapping position for frequency domain and be fixed on full bandwidth The ability of channel opposing fractional bandwidth interference of fixed position, reduce the resource mapping position for frequency domain solid It is scheduled on the experienced interference of the channel of the fixed position of full bandwidth.

Accompanying drawing explanation

Fig. 1 is interference signal characteristic schematic diagram in background technology；

Fig. 2 is the method flow schematic diagram that the embodiment of the present invention one reduces interference；

Fig. 3 is the method flow schematic diagram that the embodiment of the present invention two reduces interference；

Fig. 4 is the embodiment of the present invention three operating carriers schematic diagram one；

Fig. 5 is the embodiment of the present invention three operating carriers schematic diagram two；

Fig. 6 is the embodiment of the present invention four operating carriers schematic diagram；

Fig. 7 is the embodiment of the present invention five operating carriers schematic diagram；

Fig. 8 is the system structure schematic diagram that the embodiment of the present invention six reduces interference；

Fig. 9 is the structural representation of the embodiment of the present invention seven network equipment；

Figure 10 is the structural representation of the embodiment of the present invention eight terminal；

Figure 11 is the structural representation of the embodiment of the present invention nine network equipment；

Figure 12 is the structural representation of the embodiment of the present invention ten terminal；

Figure 13 is the method flow schematic diagram that the embodiment of the present invention 11 reduces interference；

Figure 14 is the structural representation of the embodiment of the present invention 12 terminal；

Figure 15 is the structural representation of the embodiment of the present invention 13 terminal.

Detailed description of the invention

The embodiment of the present invention can update total effective of current downlink according to there is not strongly disturbing subband width PRB number, and notify terminal；Or embodiment of the present invention terminal can have by strongly disturbing son determining After bandwidth, carry out channel estimation process or to by by strongly disturbing son to by strongly disturbing subband width The signal that bandwidth receives processes, thus solve on same frequency band the interference problem of other communication system and Artificial malicious interference problem, is effectively improved the resource mapping position for frequency domain and is fixed on consolidating of full bandwidth The ability of the channel opposing fractional bandwidth interference that location is put, reduces the resource mapping position for frequency domain and is fixed on The experienced interference of the channel of the fixed position of full bandwidth.

Embodiments providing two kinds of schemes reducing interference, the first is adaptive based on transmitting terminal Anti jamming Scheme, referring specifically to Fig. 2～Figure 12；The second is based on the adaptive Anti jamming Scheme of receiving terminal, Referring specifically to Figure 13～Figure 15.

Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.

Scheme one, the basic thought of this programme be: network equipment is accessing frequency according to equipment disposal ability In the range of set up at least one carrier wave, each carrier wave is divided at least one subband width, and picks out and be not subject to Effective subband width of interference, is mapped to down control channel on effective subband width, and to UE instruction effectively Subband width；If current carrier can not find undisturbed effective sub-bandwidth aggregation, then continue to carry at the next one Effective subband width is found, until finding effective sub-bandwidth aggregation or having traveled through all carrier waves on ripple.

As in figure 2 it is shown, the method that the embodiment of the present invention one reduces interference includes:

Step 201, network equipment judge whether exist on the subband width in the carrier wave in access frequency range Strong jamming；

Step 202, described network equipment determine all do not have that strongly disturbing subband width comprises total The number of PRB (Physical Resource Block, Physical Resource Block)；

Step 203, described network equipment according to all do not have that strongly disturbing subband width comprises total PRB number, updates effective PRB number that current downlink is total；

Step 204, described network equipment will update after the total effective PRB number of current downlink and not There is the position informing terminal that strongly disturbing subband is wide so that described terminal according to the PRB number received and There is not the wide position of strongly disturbing subband to be received processing.

Wherein, before step 201, also include:

Wherein, M1 and N1 is positive integer.

In force, the mode each carrier wave being divided into N1 sub-bandwidth has multiple, is set forth below several:

Dividing mode one, the value of each sub-amount of bandwidth from all available system bandwidth of LTE system, And the system bandwidth that no more than current carrier uses, the roomy little possible phase of different sub-band in sub-bandwidth aggregation With being likely to differ.It is to say, described network equipment is according to available system bandwidth, by each carrier wave Being divided into N1 sub-bandwidth, the wide size of the most each subband determines according to all available system bandwidth, and It is not more than the system bandwidth that current carrier uses.Table 1 provides an example of dividing mode one.

The wide division methods of table 1 subband one

If as it can be seen from table 1 system bandwidth is 1.4MHz, then can divide a sub-bandwidth；As Really system bandwidth is 3MHz, then can divide two sub-bandwidth, by that analogy.Wherein, if subband width The PRB number comprised has multiple choices, in the case of such as system bandwidth is 10MHz, can select 6, 15 and 25 3 kind, then according to high level notice or human configuration or the most as required can determine that division is several Individual sub-bandwidth and each subband width comprise how many PRB.

Dividing mode two, can put down with all PRB that indication bit number comprises current carrier according to PBCH All it is divided into N part, it is ensured that the PRB number that each subband width comprises is identical.It is to say, network side sets For each carrier wave is divided into N1 sub-bandwidth, the PRB number that the most each subband width comprises is identical.Table 2 examples providing dividing mode two.

The wide set partitioning method of table 2 subband 2

Wherein, M1 to M6 minima is 1, and maximum is floor (PRB_NUM/SPARE_BIT_NUM) Positive integer, floor (.) represent round downwards, SPARE_BIT_NUM represents the vacant bit in PBCH Number.

Wherein, whether the subband width in carrier wave in described network equipment judges access frequency range exists During strong jamming, the PRB ratio can being interfered according to described subband width or number judge.

It is preferred that for a sub-bandwidth, described network equipment judges according to the strong jamming that described subband is wide Parameter, determines the PRB ratio that described subband width is interfered；

If the wide PRB ratio being interfered of described subband judges, more than strong jamming, the first thresholding that parameter is corresponding Value, it is determined that there is strong jamming on described subband width；Otherwise determine and there is not strong jamming on described subband width.

Or

To a sub-bandwidth, described network equipment judges parameter according to the strong jamming that described subband is wide, determines The PRB number that described subband width is interfered；

If the wide PRB number being interfered of described subband judges, more than strong jamming, the second thresholding that parameter is corresponding Value, it is determined that there is strong jamming on described subband width；Otherwise determine and there is not strong jamming on described subband width.

Include but not limited to for strongly disturbing judgment criterion: Signal to Interference plus Noise Ratio (SINR) criterion, dry make an uproar than (IoT) Criterion, signal interference ratio (SIR) criterion and jamming power (IP) criterion.If it is it is to say, strongly disturbing Judgment criterion is Signal to Interference plus Noise Ratio (SINR) criterion, and the most above-mentioned strong jamming judges that parameter is Signal to Interference plus Noise Ratio；If Strongly disturbing judgment criterion is dry ratio (IoT) criterion of making an uproar, and the most above-mentioned strong jamming judges that parameter is dry ratio of making an uproar； If strongly disturbing judgment criterion is Signal to Interference plus Noise Ratio (SINR) criterion, the most above-mentioned strong jamming judges that parameter is as letter Dry ratio of making an uproar；If strongly disturbing judgment criterion is jamming power (IP) criterion, the most above-mentioned strong jamming judges ginseng Number is jamming power.

Respectively effective subband width determination methods is illustrated below according to PRB ratio and PRB number.

One, PRB ratio.

1, described strong jamming judges that parameter is Signal to Interference plus Noise Ratio, in described network equipment determines described subband width PRB upper Signal to Interference plus Noise Ratio value is not more than the number of Signal to Interference plus Noise Ratio threshold value, and by the number that determines divided by described son The PRB number that bandwidth comprises, obtains the PRB ratio that described subband width is interfered.

(dry making an uproar is believed it is preferred that preset or provide SINR threshold value SINR_TH by emulation Than threshold value) and subband width in the PRB ratio thresholding PRB_ratio_TH (the i.e. first threshold value) that is disturbed.

Calculate k_{Sub_BW}In individual sub-bandwidth, on PRB, SINR value is not more than the individual of SINR threshold value SINR_TH Number, PRB number SUB_PRB_NUM comprised divided by subband width, obtain kth_{Sub_BW}In individual sub-bandwidth The PRB ratio PRB_ratio (k being disturbed_{Sub_BW}):

Relatively kth_{Sub_BW}PRB ratio thresholding PRB_ratio and predetermined threshold value in individual sub-bandwidth The size of PRB_ratio_TH, when PRB_ratio is more than PRB_ratio_TH, this subband width exists , the most there is not strong jamming, be shown below in strong jamming:

2, described strong jamming judges that parameter is dry ratio of making an uproar, and described network equipment determines PRB in described subband width Upper dry ratio of making an uproar is not less than the dry ratio number of threshold value of making an uproar, and the number determined is comprised divided by described subband width PRB number, obtain the PRB ratio that described subband width is interfered.

It is preferred that preset or provide IoT threshold value IoT_TH (the most dry ratio of making an uproar by emulation Threshold value) and subband width in the PRB ratio thresholding PRB_ratio_TH (the i.e. first threshold value) that is disturbed；

Calculate k_{Sub_BW}In individual sub-bandwidth, on PRB, IoT value, more than the number of IoT threshold value IoT_TH, is removed PRB number SUB_PRB_NUM comprised with subband width, obtains kth_{Sub_BW}It is disturbed in individual sub-bandwidth PRB ratio PRB_ratio (k_{Sub_BW}):

Relatively kth_{Sub_BW}PRB ratio thresholding PRB_ratio and predetermined threshold value in individual sub-bandwidth The size of PRB_ratio_TH, when PRB_ratio is more than PRB_ratio_TH, this subband width exists , the most there is not strong jamming in strong jamming.

3, described strong jamming judges that parameter is signal interference ratio, and described network equipment determines PRB in described subband width Upper signal interference ratio value is not more than the number of signal interference ratio threshold value, and the number determined is comprised divided by described subband width PRB number, obtain the PRB ratio that described subband width is interfered.

It is preferred that preset or provide a SIR threshold value SIR_TH (i.e. signal interference ratio by emulation Threshold value) and subband width in the PRB ratio thresholding PRB_ratio_TH (the i.e. first threshold value) that is disturbed；

Calculate k_{Sub_BW}In individual sub-bandwidth, on PRB, sir value, more than the number of SIR threshold value SIR_TH, removes PRB number SUB_PRB_NUM comprised with subband width, obtains kth_{Sub_BW}It is disturbed in individual sub-bandwidth PRB ratio PRB_ratio (k_{Sub_BW}):

4, described strong jamming judges that parameter is jamming power, in described network equipment determines described subband width The upper interference power values of PRB is not less than the number of jamming power threshold value, and by the number that determines divided by described son The PRB number that bandwidth comprises, obtains the PRB ratio that described subband width is interfered.

It is preferred that preset or provide an IP threshold value IP_TH (i.e. jamming power by emulation Threshold value) and subband width in the PRB ratio thresholding PRB_ratio_TH (the i.e. first threshold value) that is disturbed；

Calculate k_{Sub_BW}In individual sub-bandwidth, on PRB, sir value is more than the number of IP threshold value IP_TH, divided by PRB number SUB_PRB_NUM that subband width comprises, obtains kth_{Sub_BW}It is disturbed in individual sub-bandwidth PRB ratio PRB_ratio (k_{Sub_BW}):

Above-mentioned threshold value can pass through experience or emulation by human configuration, it is also possible to is configured by high level, also may be used To be determined voluntarily by network equipment.

Two, PRB number.

1, described strong jamming judges that parameter is Signal to Interference plus Noise Ratio, in described network equipment determines described subband width PRB upper Signal to Interference plus Noise Ratio value is not more than the number of Signal to Interference plus Noise Ratio threshold value, if no more than Signal to Interference plus Noise Ratio threshold value Number more than the second threshold value, it is determined that subband width, by strong jamming, otherwise determines that subband width is not affected by by force Interference.

2, described strong jamming judges that parameter is dry ratio of making an uproar, and described network equipment determines PRB in described subband width Upper dry ratio of making an uproar is not less than the dry ratio number of threshold value of making an uproar, if be more than than the number of threshold value not less than dry making an uproar Second threshold value, it is determined that subband width, by strong jamming, otherwise determines that subband width is not affected by strong jamming.

3, described strong jamming judges that parameter is signal interference ratio, and described network equipment determines PRB in described subband width Upper signal interference ratio value is not more than the number of signal interference ratio threshold value, if the number of no more than signal interference ratio threshold value is more than Second threshold value, it is determined that subband width, by strong jamming, otherwise determines that subband width is not affected by strong jamming.

4, described strong jamming judges that parameter is jamming power, in described network equipment determines described subband width The upper interference power values of PRB is not less than the number of jamming power threshold value, if not less than jamming power threshold value Number more than the second threshold value, it is determined that subband width, by strong jamming, otherwise determines that subband width is not affected by by force Interference.

Owing to not being to judge to find to there is strongly disturbing subband width every time, so judging to access frequency range After whether there is strong jamming on the interior subband width in carrier wave, if judging for X time continuously to access in frequency range Carrier wave in subband width on whether there is strong jamming, the most do not find not by strongly disturbing subband width, then institute State network equipment to alert to high level.Wherein, X is positive integer.

The number of times of concrete X can pass through experience or emulation by human configuration, it is also possible to is configured by high level, also Can be determined voluntarily by network equipment.

Whether such as X is 3, judge for the most continuous 3 times to access on the subband width in the carrier wave in frequency range and deposit In strong jamming, the most not finding not by strongly disturbing subband width, the most described network equipment is to OAM equipment Alarm, so that the above-mentioned threshold value of OAM apparatus modifications (such as improving above-mentioned threshold value).

In force, network equipment can judge in the cycle；Can also occur by Cell Center User in community Throughput degradation ratio is opened when exceeding some fixed proportion thresholding, or the average throughput in whole community The down ratio of amount is opened when exceeding some fixed proportion thresholding.

It is preferred that described network equipment will update after the total effective PRB number of current downlink and not When there is the wide position informing terminal of strongly disturbing subband, it is possible to use the vacant bit of PBCH channel to UE indicates effective subband width, and every bit may indicate that several PRB.

Such as: for 25 PRB of 5MHz system bandwidth, it is assumed that PBCH has 5 vacant bits, The most each bit corresponds to 5 PRB of continuous print.

It should be noted that the embodiment of the present invention is not limited to improve PBCH (Physical Broadcast Channel, Physical Broadcast Channel) instruction of channel free bit, as long as can be by total for current downlink effective PRB number and there is not the mode of the wide position informing terminal of strongly disturbing subband to be all suitable for the present invention real Execute example.

The network equipment of the embodiment of the present invention can be base station (such as macro base station, Home eNodeB etc.), also Can be RN (relaying) equipment, it is also possible to be other network equipment.

As it is shown on figure 3, the method that the embodiment of the present invention two reduces interference includes:

Step 301, subscriber equipment receive the total effective PRB of current downlink from network equipment notice Number and there is not the position informing terminal that strongly disturbing subband is wide, effective PRB that wherein current downlink is total Number is to access do not have on the subband width in the carrier wave in frequency range that strongly disturbing subband width comprises total PRB number；

Step 302, described subscriber equipment according to the total effective PRB number of the current downlink received and are not deposited In the position that strongly disturbing subband is wide, it is received processing.

With network equipment as eNB, (evolution base station) illustrates below.

ENB side process step:

Step0: network equipment sets up M carrier wave in LTE accesses frequency range, initializes The parameter values such as SINR_TH, IoT_TH, SIR_TH, IP_TH, PRB_ratio_TH, N_Time, order M=1.

Owing to not being that quasi-side all uses, it is possible to only initialize the thresholding that the quasi-side used relates to.

Step1: on m-th carrier wave, network equipment according to subband width set partitioning method system band Wide BW is divided into several identical subband width or different sub-band width.

Whether Step2: network equipment uses interference judgment criterion to judge to exist on each subband width capable and experienced respectively Disturb, be integrated into effective sub-bandwidth aggregation if there is no then this subband width and enter next subband width and do Disturb judgement, carry out interference judgement, when having traveled through all subbands if there is then leaping to next subband width Step3 is entered after width.

Step3: network equipment judges whether effective sub-bandwidth aggregation is empty, if (representing current carrier Strong jamming is all there is on upper all subband width), enter Step4；Otherwise (represent the part subband of current carrier Strong jamming is there is not on width), enter Step5；

Step4: network equipment judges whether m is more than M, if it is, enter Step6；Otherwise, order M=m+1, enters next carrier wave and judges, and return Step1；

Step5: network equipment is mapped to down control channel on effective sub-bandwidth aggregation, and correction is worked as Front descending total effective PRB number PRB_NUM is the PRB number that effective sub-bandwidth aggregation comprises, and And utilize the vacant bit of PBCH channel to the total effective PRB number of UE instruction current downlink PRB_NUM and the wide position of each effective subband, enter Step7.

Step6: network equipment judges whether to reach N_Time time and (represents that N continuous _ Time time is all All can not find undisturbed effective subband width position on M carrier wave), if it is, to OAM equipment or Person's alarm module alerts, and improves the threshold values such as SINR_TH, IoT_TH, PRB_ratio_TH, and returns Step1；Otherwise, it is directly entered Step7.

The operation of Step7: network equipment terminates.

UE side process step:

Step8:UE reads PBCH channel with cycle T, and utilizing the vacant bit of PBCH channel to obtain has Effect subband width instruction, enters Step9；

Step9:UE indicates according to Step8 effective subband width, revises effective PRB number that current downlink is total PRB_NUM, the effective PRB number total according to current downlink and there is not the position that strongly disturbing subband is wide Put, be received processing, including carrying out the demapping of down control channel, channel equalization, solution mediation decoding Operate Deng processing.

The operation of Step10: receiving end terminates.

Several scene is set forth below, the solution of the present invention is described in detail.

Scene one, system bandwidth 20MHz, M=2, it is divided into four wide combinations of 5M subband, T=500ms.

Step0: as shown in Figure 4, sets up most 2 carrier waves in LTE accesses frequency range.

Wherein, each carrier system bandwidth 20MHz, use dry ratio (IoT) criterion of making an uproar, preset IoT Threshold value IoT_TH=6dB, the PRB ratio thresholding PRB_ratio_TH=30% being disturbed in subband width, N_Time=1, initializes m=0, and effective sub-bandwidth aggregation is empty, enters Step1；

Step1: in the center frequency point that m-th carrier wave is corresponding, whole system bandwidth BW is divided into four Combination (the k that individual 5M subband is wide_{Sub_BW}=1,2,3,4), Step2 is entered；

Step2: use dry making an uproar to judge whether to exist on each subband width strong jamming respectively than (IoT) criterion, If it does not exist, then this subband width is integrated into effective sub-bandwidth aggregation and next subband width is carried out interference sentences Disconnected；If it is present leap to next subband width to carry out interference judgement, when having traveled through all subband width Rear entrance Step3；

Concrete, it is calculated kth_{Sub_BW}The PRB ratio thresholding being disturbed in individual sub-bandwidth PRB_ratio(k_{Sub_BW}), and be respectively compared PRB_ratio (1), PRB_ratio (2), PRB_ratio (3) and PRB_ratio (4) and the size of predetermined threshold value PRB_ratio_TH:

Five kind situations are set forth below.

CASE1:

Due to PRB_ratio (k_{Sub_BW}) >=PRB_ratio_TH, (k_{Sub_BW}=1,2,3,4), four sub-bandwidth exist Strong jamming.

CASE2:

PRB_ratio (1)=52%, PRB_ratio (2)=64%, PRB_ratio (3)=60%, PRB_ratio (4)=28%, by In PRB_ratio (k_{Sub_BW}) > PRB_ratio_TH, (k_{Sub_BW}=1,2,3)

PRB_ratio (4)≤PRB_ratio_TH, first to a 3rd sub-bandwidth there are strong jamming, the Strong jamming is not had in four sub-bandwidth.

CASE3:

PRB_ratio (1)=52%, PRB_ratio (2)=60%, PRB_ratio (3)=20%, PRB_ratio (4)=28%, by In PRB_ratio (k_{Sub_BW}) > PRB_ratio_TH, (k_{Sub_BW}=1,2), PRB_ratio(k_{Sub_BW})≤PRB_ratio_TH, (k_{Sub_BW}=3,4), first and second sub-bandwidth are deposited There iing strong jamming, the 3rd and the 4th sub-bandwidth are not having strong jamming.

CASE4:

PRB_ratio (1)=52%, PRB_ratio (2)=24%, PRB_ratio (3)=20%, PRB_ratio (4)=28%, due to PRB_ratio (1) > PRB_ratio_TH, PRB_ratio (k_{Sub_BW})≤PRB_ratio_TH, (k_{Sub_BW}=2,3,4), There are strong jamming in first sub-bandwidth, second to a 4th sub-bandwidth does not has strong jamming.

CASE5:

PRB_ratio (1)=20%, PRB_ratio (2)=24%, PRB_ratio (3)=28%, PRB_ratio (4)=20%, by In PRB_ratio (k_{Sub_BW})≤PRB_ratio_TH, (k_{Sub_BW}=1,2,3,4), four sub-bandwidth are the most capable and experienced Disturb.

As it is shown in figure 5, correspond respectively to above-mentioned five kinds of CASE, in figure, the sub-frame of band fork represents certain 5MHz Subband width is by strong jamming, and the sub-frame without fork represents not by strong jamming, represents the most respectively One to the 4th sub-bandwidth.

Whether comparative result uses shown in table 3, have capable and experienced with 4bit instruction interference on each 5M subband width Disturbing, 0 indicates strong jamming, and 1 indicates without strong jamming.

The available subband width of MIB instruction in table 3 scene one

Step3: judge whether effective sub-bandwidth aggregation is empty:

For case1, effective sub-bandwidth aggregation is empty (a1, a2, a3 and a4 are full 0s), enters Step4；

For case2 to case5, effective sub-bandwidth aggregation is not empty, enters Step5.

Step4: judge whether m is more than 2, if it is, enter Step6；Otherwise, make m=m+1, enter Next carrier wave, enters Step1；

For case1, current m=1 < 2, enter operating carriers 2, enter Step1.

Step5:eNB is mapped to down control channel on effective sub-bandwidth aggregation, and revises when front lower Total PRB number PRB_NUM of row is the PRB number that effective sub-bandwidth aggregation comprises, and utilizes The vacant bit of MIB of PBCH channel bearing indicates effective subband width to UE.

For case2 to case5, MIB use last four bits of vacant bit represent [a1 a2 a3 a4]。

Step6:eNB judges whether continuous 2 times to can not find undisturbed effective son on M carrier wave Bandwidth location, if it is, to OAM (Operations and Maintenance, run and safeguard) equipment Or alarm module alarm so that OAM equipment or alarm module according to the ratio of 10% adjust IoT_TH and The threshold values such as PRB_ratio_TH, and enter Step1；Otherwise, it is directly entered Step1.

Step7:eNB operation terminates.

UE side process step:

Step8:UE reads PBCH channel with cycle T=500ms, utilizes the vacant ratio of PBCH channel Special acquisition effective subband width instruction, enters Step9；

UE (terminal) reads last four bits of the vacant bit of MIB and obtains effective subband width instruction [a1 a2 a3 a4]。

Effective subband width instruction that Step9:UE obtains according to Step8, revises current downlink total PRB Number PRB_NUM is the PRB number that effective sub-bandwidth aggregation comprises, and determines effective subband width position, The demapping and the receipt of subsequent that carry out down control channel process.

[the a1 a2 a3 a4] that UE obtains according to Step8；

For case2, effective subband width set sizes is 5MHz, revises N_DL_RB=25；

For case3, effective subband width set sizes is 10MHz, revises N_DL_RB=50；

For case4, effective subband width set sizes is 15MHz, revises N_DL_RB=75.

Scene two, system bandwidth 15MHz, be divided into combination or the combination of 5 3M of 3 5M.

Basic operation is identical with scene one, below the effective sub-bandwidth aggregation that is given in Step2 of emphasis sentence Disconnected result.

1) as shown in table 4, system bandwidth 15MHz, it is divided into the combination of 3 5M.Use MIB In vacant bit 3bit instruction interference on each 5M subband width, whether have strong jamming, 0 indicates capable and experienced Disturbing, 1 indicates without strong jamming.Whether eNB exists strong jamming in measuring 5M subband width respectively, not existing Strongly disturbing subband width forms effective sub-bandwidth aggregation, and PCFICH/PHICH/PDCCH has only been mapped in Imitate sub-bandwidth aggregation.

The available subband width of MIB instruction in table 4 scene two

As shown in Figure 6,15MHz is divided into the combination of 3 5M.In figure, the sub-frame of band fork represents certain 5MHz subband width by strong jamming, without the sub-frame of fork represent certain 5M not by strong jamming, from top to bottom Represent first to the 3rd sub-bandwidth respectively.

2) as shown in table 5, system bandwidth 15MHz, it is divided into the combination of 5 3M.Use MIB In vacant bit 5bit instruction interference on each 3M subband width, whether have strong jamming, 0 indicates capable and experienced Disturbing, 1 indicates without strong jamming.Whether eNB exists strong jamming in measuring 3M subband width respectively, not existing Strongly disturbing subband width forms effective sub-bandwidth aggregation, and PCFICH/PHICH/PDCCH has only been mapped in Imitate sub-bandwidth aggregation.

The available subband width of MIB instruction in table 5 scene two

Scene three, system bandwidth 10MHz, be divided into 5M+5M or the combination of 3 3M.Scene The basic operation of three is identical with scene one, below the effective sub-bandwidth aggregation that is given in Step2 of emphasis sentence Disconnected result.

1) as shown in table 6, system bandwidth 10MHz, it is divided into the combination of 2 5M.Use MIB In vacant bit 2bit instruction interference on each 5M subband width, whether have strong jamming, 0 indicates capable and experienced Disturbing, 1 indicates without strong jamming.Whether eNB exists strong jamming in measuring 5M subband width respectively, not existing Strongly disturbing subband width forms effective sub-bandwidth aggregation, and PCFICH/PHICH/PDCCH has only been mapped in Imitate sub-bandwidth aggregation.

The available subband width of MIB instruction in table 6 scene three

As it is shown in fig. 7,10MHz is divided into the combination of 2 5M.In Fig. 6, the sub-frame of band fork represents certain 5MHz subband width by strong jamming, without the sub-frame of fork represent certain 5M not by strong jamming, from top to bottom Represent first to second sub-bandwidth respectively.

2) as shown in table 7, system bandwidth 10MHz, it is divided into the combination of 3 3M.Use MIB In vacant bit 3bit instruction interference on each 3M subband width, whether have strong jamming, 0 indicates capable and experienced Disturbing, 1 indicates without strong jamming.Whether eNB exists strong jamming in measuring 3M subband width respectively, not existing Strongly disturbing subband width forms effective sub-bandwidth aggregation, and PCFICH/PHICH/PDCCH has only been mapped in Imitate sub-bandwidth aggregation.

The available subband width of MIB instruction in table 7 scene three

Based on same inventive concept, the embodiment of the present invention additionally provides the base in a kind of system reducing interference Side apparatus, the terminal of standing and reduce the system of interference, owing to these equipment solves the principle of problem and the present invention Embodiment Fig. 2 is similar with the method reducing interference of Fig. 3, and therefore the enforcement of these equipment may refer to method Enforcement, repeat no more in place of repetition.

As shown in Figure 8, the system of the embodiment of the present invention six reduction interference includes: network equipment 800 and use Family equipment 801.

Whether network equipment 800, exist for judging to access on the subband width in the carrier wave in frequency range Strong jamming；Determine all numbers that there is not total PRB that strongly disturbing subband width comprises；According to all There is not total PRB number that strongly disturbing subband width comprises, update current downlink total effective PRB Number；The total effective PRB number of current downlink after updating and there is not the position that strongly disturbing subband is wide Put notice terminal；

Subscriber equipment 801, for receiving the total effective PRB of current downlink from network equipment notice Number and there is not the position informing terminal that strongly disturbing subband is wide, according to total the having of the current downlink received Imitate PRB number and there is not the position that strongly disturbing subband is wide, being received processing.

As it is shown in figure 9, the network equipment of the embodiment of the present invention seven includes: the first judge module 900, individual Number determines module 901, more new module 902 and notification module 903.

Whether the first judge module 900, deposit for judging to access on the subband width in the carrier wave in frequency range In strong jamming；

Number determines module 901, all there is not total PRB that strongly disturbing subband width comprises for determining Number；

More new module 902, for there is not, according to all, total PRB number that strongly disturbing subband width comprises, Update effective PRB number that current downlink is total；

Notification module 903, is used for the total effective PRB number of the current downlink after updating and does not exist strong The wide position informing terminal of subband of interference.

It is preferred that described first judge module 900 is additionally operable to:

Wherein, M1 and N1 is positive integer.

It is preferred that described first judge module 900 specifically for:

Described strong jamming judges that parameter is signal interference ratio, determines that on PRB, signal interference ratio value is little in described subband width In the number of signal interference ratio threshold value, and the PRB number that the number determined is comprised divided by described subband width, Obtain the PRB ratio that described subband width is interfered.

Wherein, X is positive integer.

As shown in Figure 10, the terminal of the embodiment of the present invention eight includes: receiver module 1000 and first processes mould Block 1001.

Receiver module 1000, for receiving the total effective PRB of current downlink from network equipment notice Number and there is not the position informing terminal that strongly disturbing subband is wide, effective PRB that wherein current downlink is total Number is to access do not have on the subband width in the carrier wave in frequency range that strongly disturbing subband width comprises total PRB number；

First processing module 1001, for the effective PRB number total according to the current downlink that receives and not There is the position that strongly disturbing subband is wide, be received processing.

As shown in figure 11, the network equipment of the embodiment of the present invention nine includes:

Processor 1101, for reading the program in memorizer 1104, performs following process:

Judge to access on the subband width in the carrier wave in frequency range and whether there is strong jamming；Determine and all do not deposit Number at total PRB that strongly disturbing subband width comprises；Strongly disturbing subband width is there is not according to all The total PRB number comprised, updates effective PRB number that current downlink is total；By transceiver 1102 Effective PRB number that current downlink after renewal is total and there is not the position informing that strongly disturbing subband is wide Terminal.

Transceiver 1102, for receiving and sending data under the control of processor 1101.

It is preferred that described processor 1101 is additionally operable to:

Wherein, M1 and N1 is positive integer.

It is preferred that described processor 1101 specifically for:

It is preferred that described processor 1101 is additionally operable to:

Wherein, X is positive integer.

In fig. 11, bus architecture (represents by bus 1100), and bus 1100 can include Arbitrary Digit The bus of the interconnection of amount and bridge, bus 1100 will include the one or more process represented by processor 1101 The various electrical chains of the memorizer that device and memorizer 1104 represent are connected together.Bus 1100 can also be by all Other electrical chains various such as ancillary equipment, manostat and management circuit or the like are connected together, these It is all to it is known in the art, therefore, the most no longer it is described further.EBI 1103 Interface is provided between bus 1100 and transceiver 1102.Transceiver 1102 can be an element, also Can be multiple element, the most multiple receptors and transmitter, it is provided that for over a transmission medium with various its The unit of his device communication.The data that treated device 1101 processes are entered on the radio medium by antenna 1105 Row transmission, further, antenna 1105 also receives data and transfers data to processor 1101.

Processor 1101 is responsible for bus 1100 and common process, it is also possible to provide various function, bag Include timing, peripheral interface, voltage-regulation, power management and other control functions.And memorizer 1104 Can be used for storing the data that processor 1101 is used when performing operation.

Optionally, processor 1101 can be CPU (centre buries device), ASIC (Application Specific Integrated Circuit, special IC), FPGA (Field-Programmable Gate Array, Field programmable gate array) or CPLD (Complex Programmable Logic Device, complexity can be compiled Journey logical device).

As shown in figure 12, the terminal of the embodiment of the present invention ten includes:

Processor 1201, for reading the program in memorizer 1204, performs following process:

The effective PRB received from the current downlink of network equipment notice is total by transceiver 1202 is individual Count and there is not the position informing terminal that strongly disturbing subband is wide, effective PRB that wherein current downlink is total Number is to access do not have on the subband width in the carrier wave in frequency range that strongly disturbing subband width comprises total PRB number；The effective PRB number total according to the current downlink received and there is not strongly disturbing son The position of bandwidth, is received processing.

Transceiver 1202, for receiving and sending data under the control of processor 1201.

In fig. 12, bus architecture (represents by bus 1200), and bus 1200 can include Arbitrary Digit The bus of interconnection of amount and bridge, bus 1200 by include by general processor 1201 represent one or more The various electrical chains of the memorizer that processor and memorizer 1204 represent are connected together.Bus 1200 is all right Other electrical chains various of such as ancillary equipment, manostat and management circuit or the like are connected together, These are all to it is known in the art, therefore, are the most no longer described further it.EBI 1203 Interface is provided between bus 1200 and transceiver 1202.Transceiver 1202 can be an element, also Can be multiple element, the most multiple receptors and transmitter, it is provided that for over a transmission medium with various its The unit of his device communication.Such as: transceiver 1202 receives external data from other equipment.Transceiver 1202 Data after being processed by processor 1201 are sent to other equipment.Depend on the character of calculating system, May be provided for user interface 1205, such as keypad, display, speaker, mike, stick.

Processor 1201 is responsible for bus 1200 and common process, runs general operation as described in aforementioned System.And memorizer 1204 can be used for storing the data that processor 1201 is used when performing operation.

Optionally, processor 1201 can be CPU, ASIC, FPGA or CPLD.

Scheme two, the basic thought of this programme be: base station does not processes at transmitting terminal, and UE is at receiving terminal list Stay alone reason.Base station sends down control channel PCFICH/PDCCH/PHICH according to full bandwidth；Terminal is certainly Row carries out interferometry, judges to be disturbed position according to measured value, estimates the frequency domain channel being disturbed position Evaluation or frequency-domain received signal carry out interference process (such as: be set to 0 or minimum), it is therefore an objective to the greatest extent Amount eliminates the interference impact for useful reception signal.Wherein, the granularity of interferometry can be PRB, It can also be subcarrier；Include but not limited to for the judgment criterion being disturbed position: Signal to Interference plus Noise Ratio (SINR) Criterion, dry make an uproar than (IoT) criterion, signal interference ratio (SIR) criterion and jamming power (IP) criterion.

As shown in figure 13, the method for the embodiment of the present invention 11 reduction interference includes:

Step 1301, subscriber equipment judge whether exist by force on the subband width in the carrier wave in access frequency range Interference；

Step 1302, described subscriber equipment are after determining and having by strongly disturbing subband width, to by strong jamming Subband width carry out channel estimation process or the signal by being received by strongly disturbing subband width carried out Process.

It is preferred that described subscriber equipment is to when being carried out channel estimation process by strongly disturbing subband width, permissible When signal by being received by strongly disturbing PRB is processed, believe by strongly disturbing PRB Road estimated result is set to set numerical value, to reduce the interference impact for useful transmission signal to be detected.

When the signal received by strongly disturbing subband width is processed by described subscriber equipment, can be to passing through When the signal received by strongly disturbing PRB processes, to the reception signal by strongly disturbing PRB It is set to set numerical value, to reduce the interference impact for useful transmission signal to be detected.

It should be noted that above-mentioned processing mode is merely illustrative, as long as can be to reduce interference for having It is all suitable for the embodiment of the present invention by the mode of the impact receiving signal.

It is preferred that the 1 of the embodiment of the present invention sub-bandwidth includes N2 PRB, or N3 subcarrier. Wherein, N2 and N3 is integer, and minima is 1, total PRB that maximum respectively system bandwidth comprises Number and total subcarrier number.For 20MHz system bandwidth, 1≤N2≤100,1≤N3≤1200.

Concrete dividing mode is similar with the dividing mode in Fig. 2, does not repeats them here.

Whether exist capable and experienced on subband width in described subscriber equipment carrier wave in judging access frequency range When disturbing, can be judged by the subcarrier in subband width, it is also possible to judge according to the PRB in subband width.

Described strong jamming judges that parameter includes one of the following:

Illustrate separately below.

One, judged by the subcarrier in subband width.

1, described strong jamming judges that parameter is Signal to Interference plus Noise Ratio:

Preset or provide SINR threshold value SINR_TH (i.e. Signal to Interference plus Noise Ratio thresholding by emulation Value)；

Calculate k_{Sub_BW}The average Signal to Interference plus Noise Ratio of all subcarriers in individual sub-bandwidth, relatively average Signal to Interference plus Noise Ratio with The size of SINR threshold value SINR_TH, when average Signal to Interference plus Noise Ratio is not more than SINR_TH, this subband There is strong jamming on width, the most there is not strong jamming.

2, described strong jamming judges that parameter is dry ratio of making an uproar:

Preset or provide IoT threshold value IoT_TH (the most dry make an uproar than threshold value) by emulation；

Calculate k_{Sub_BW}The most dry ratio of making an uproar of all subcarriers in individual sub-bandwidth, the most dry make an uproar than with IoT The size of threshold value IoT_TH, when the most dry ratio of making an uproar is during more than IoT_TH, this subband width exists capable and experienced Disturb, the most there is not strong jamming.

3, described strong jamming judges that parameter is signal interference ratio:

Preset or provide SIR threshold value SIR_TH (i.e. signal interference ratio threshold value) by emulation；

Calculate k_{Sub_BW}The average signal interference ratio of all subcarriers in individual sub-bandwidth, relatively average signal interference ratio and SIR The size of threshold value SIR_TH, when average signal interference ratio is not more than SIR_TH, this subband width exists strong , the most there is not strong jamming in interference.

4, described strong jamming judges that parameter is jamming power:

Preset or provide IP threshold value IP_TH (i.e. signal interference ratio threshold value) by emulation；

Calculate k_{Sub_BW}The average interference power of all subcarriers in individual sub-bandwidth, compare average interference power with The size of IP threshold value IP_TH, when average interference power is not less than IP_TH, this subband width exists , the most there is not strong jamming in strong jamming.

Two, judged by the PRB in subband width.

It is preferred that described network equipment judges parameter according to the strong jamming that subband is wide, determine at least one son The PRB ratio that bandwidth is interfered；

If described PRB ratio judges the 3rd threshold value that parameter is corresponding more than strong jamming, it is determined that described extremely Strong jamming is there is in a few sub-bandwidth；Otherwise determine and there is not strong jamming at least one subband width described. Or

Described network equipment judges parameter according to the strong jamming that subband is wide, determines that at least one subband width is subject to The PRB number of interference；

If described PRB number judges the 4th threshold value that parameter is corresponding more than strong jamming, it is determined that described extremely Strong jamming is there is in a few sub-bandwidth；Otherwise determine and there is not strong jamming at least one subband width described.

(1), PRB ratio.

(dry making an uproar is believed it is preferred that preset or provide SINR threshold value SINR_TH by emulation Than threshold value) and subband width in the PRB ratio thresholding PRB_ratio_TH (the i.e. the 3rd threshold value) that is disturbed.

Calculate k_{Sub_BW}In individual sub-bandwidth, on PRB, IoT value is not less than the number of IoT threshold value IoT_TH, PRB number SUB_PRB_NUM comprised divided by subband width, obtains kth_{Sub_BW}By dry in individual sub-bandwidth The PRB ratio PRB_ratio (k disturbed_{Sub_BW}):

Calculate k_{Sub_BW}In individual sub-bandwidth, on PRB, sir value is not more than the number of SIR threshold value SIR_TH, PRB number SUB_PRB_NUM comprised divided by subband width, obtains kth_{Sub_BW}By dry in individual sub-bandwidth The PRB ratio PRB_ratio (k disturbed_{Sub_BW}):

Calculate k_{Sub_BW}In individual sub-bandwidth, on PRB, sir value, not less than the number of IP threshold value IP_TH, removes PRB number SUB_PRB_NUM comprised with subband width, obtains kth_{Sub_BW}It is disturbed in individual sub-bandwidth PRB ratio PRB_ratio (k_{Sub_BW}):

(2), PRB number.

Two examples are set forth below.

Example one, system bandwidth are 20MHz, disturb judgment variables thresholding IP_TH=2* noise power, interference The granularity measured is subcarrier, N2=6；Jamming power (IP) is used for the judgment criterion being disturbed position Criterion.

1) interference judgment mechanism:

Terminal judges interference position voluntarily according to the reception power of sub-carrier signal, is one with 6 subcarriers Subband width, use the mean receiving power of wide interior 6 subcarriers of single subband as interference judgment variable, with Thresholding IP_TH=2* noise power set in advance judges: think this son when ratio is not less than thresholding Bandwidth is by strong jamming, otherwise it is assumed that not by strong jamming.

2) Interaction Handler system:

Channel estimation results or reception signal are processed, wide by strongly disturbing subband to judge Channel estimation results or frequency-domain received signal result are set to minimum.

Table 8 gives interference judgement and the treatment mechanism of the present embodiment.

Table 8 interference judges and Interaction Handler system

Example two, system bandwidth are 20MHz, disturb judgment variables thresholding IP_TH=2* noise power, interference The granularity measured is PRB；Jamming power (IP) criterion is used for the judgment criterion being disturbed position, PRB_ratio_TH=50%.

1) interference judgment mechanism:

The granularity of interferometry is PRB, N1=4, and the most each subband is wide comprises 4 PRB, 20MHz System bandwidth contain 25 sub-bandwidth.

Select 10% calculating meansigma methods minimum in 1200 subcarriers of full bandwidth and obtain noise power, be 0.1； Then interference decision threshold IP_TH=2* noise power=2*0.1=0.2 it is calculated.

Calculate k_{Sub_BW}In individual sub-bandwidth, on PRB, interference power values is not more than jamming power threshold value IP_TH The number of (=0.2), PRB number N1 comprised divided by subband width, obtain kth_{Sub_BW}In individual sub-bandwidth The PRB ratio PRB_ratio (k being disturbed_{Sub_BW}):

The PRB ratio obtaining 25 sub-bandwidth on 20MHz full bandwidth is as shown in table 9:

Table 9

k_{Sub_BW}	1	2	3	4	5	6	7	8	9
										PRB_ratio(k_{Sub_BW})	50%	75%	75%	100%	75%	50%	25%	0%	0%
k_{Sub_BW}	10	11	12	13	14	15	16	17	18
										PRB_ratio(k_{Sub_BW})	0%	0%	0%	0%	0%	0%	0%	0%	0%
k_{Sub_BW}	19	20	21	22	23	24	25
										PRB_ratio(k_{Sub_BW})	0%	0%	0%	0%	0%	0%	0%

Obtain on 20MHz full bandwidth 25 sub-bandwidth, whether there is strongly disturbing instruction such as table 10 institute Show:

Table 10

k_{Sub_BW}	1	2	3	4	5	6	7	8	9
										H1/H0	H1	H1	H1	H1	H1	H1	H0	H0	H0
k_{Sub_BW}	10	11	12	13	14	15	16	17	18
										H1/H0	H0	H0	H0	H0	H0	H0	H0	H0	H0
k_{Sub_BW}	19	20	21	22	23	24	25
										H1/H0	H0	H0	H0	H0	H0	H0	H0

2) Interaction Handler system:

The docking collection of letters number or channel estimation results process.Wide by strongly disturbing subband to judge Channel estimation results or frequency-domain received signal result are set to minimum.

Based on same inventive concept, the embodiment of the present invention additionally provides a kind of terminal, owing to this equipment solves The principle of problem is similar to the method reducing interference of embodiment of the present invention Figure 13, the therefore enforcement of this equipment May refer to the enforcement of method, repeat no more in place of repetition.

As shown in figure 14, the terminal of the embodiment of the present invention 12 includes: the second judge module 1400 and second Processing module 1401.

Whether the second judge module 1400, deposit for judging to access on the subband width in the carrier wave in frequency range In strong jamming；

Second processing module 1401, for after determining and having by strongly disturbing subband width, to by strong jamming Subband width carry out channel estimation process or the signal by being received by strongly disturbing subband width carried out Process.

It is preferred that described second judge module 1400 specifically for:

It is preferred that described second processing module 1401 specifically for:

As shown in figure 15, the terminal of the embodiment of the present invention 13 includes:

Processor 1501, for reading the program in memorizer 1504, performs following process:

Judge to access on the subband width in the carrier wave in frequency range and whether there is strong jamming；It is subject to determining After strongly disturbing subband width, carried out at channel estimation by strongly disturbing subband width by transceiver 1502 Manage or the signal by being received by strongly disturbing subband width is processed.

Transceiver 1502, for receiving and sending data under the control of processor 1501.

It is preferred that described processor 1501 specifically for:

In fig .15, bus architecture (represents by bus 1500), and bus 1500 can include Arbitrary Digit The bus of interconnection of amount and bridge, bus 1500 by include by general processor 1501 represent one or more The various electrical chains of the memorizer that processor and memorizer 1504 represent are connected together.Bus 1500 is all right Other electrical chains various of such as ancillary equipment, manostat and management circuit or the like are connected together, These are all to it is known in the art, therefore, are the most no longer described further it.EBI 1503 Interface is provided between bus 1500 and transceiver 1502.Transceiver 1502 can be an element, also Can be multiple element, the most multiple receptors and transmitter, it is provided that for over a transmission medium with various its The unit of his device communication.Such as: transceiver 1502 receives external data from other equipment.Transceiver 1502 Data after being processed by processor 1501 are sent to other equipment.Depend on the character of calculating system, May be provided for user interface 1505, such as keypad, display, speaker, mike, stick.

Processor 1501 is responsible for bus 1500 and common process, runs general operation as described in aforementioned System.And memorizer 1504 can be used for storing the data that processor 1501 is used when performing operation.

Optionally, processor 1501 can be CPU, ASIC, FPGA or CPLD.

It can be seen from the above: the embodiment of the present invention can update according to there is not strongly disturbing subband width Effective PRB number that current downlink is total, and notify terminal；Or embodiment of the present invention terminal can be really Surely have by after strongly disturbing subband width, carry out channel estimation process or right to by strongly disturbing subband width Processed by the signal received by strongly disturbing subband width, thus solve on same frequency band other and lead to The interference problem of communication system and artificial malicious interference problem, be effectively improved the resource mapped bits for frequency domain Put the ability of the channel opposing fractional bandwidth interference of the fixed position being fixed on full bandwidth, reduce for frequency domain Resource mapping position is fixed on the experienced interference of the channel of the fixed position of full bandwidth.

Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.

Claims

1. the method reducing interference, it is characterised in that the method includes:

2. the method for claim 1, it is characterised in that described network equipment judges to access frequency Before whether there is strong jamming on subband width in carrier wave in the range of rate, also include:

Wherein, M1 and N1 is positive integer.

3. method as claimed in claim 2, it is characterised in that described network equipment is each carrier wave It is divided into N1 sub-bandwidth, including:

4. the method for claim 1, it is characterised in that described network equipment judges to access frequency Whether strong jamming is there is on subband width in carrier wave in the range of rate, including:

5. method as claimed in claim 4, it is characterised in that described network equipment is according to subband width Strong jamming judge parameter, determine the PRB ratio that described subband width is interfered, including:

6. the method for claim 1, it is characterised in that described network equipment judges to access frequency After whether there is strong jamming on subband width in carrier wave in the range of rate, also include:

Wherein, X is positive integer.

7. the method reducing interference, it is characterised in that the method includes:

Subscriber equipment receive from network equipment notice the total effective PRB number of current downlink and There is not the position that strongly disturbing subband is wide, effective PRB number that wherein current downlink is total is to access frequency In the range of carrier wave in subband width on there is not total PRB number that strongly disturbing subband width comprises；

8. the network equipment reducing interference, it is characterised in that this network equipment includes:

9. network equipment as claimed in claim 8, it is characterised in that described first judge module is also For:

Wherein, M1 and N1 is positive integer.

10. network equipment as claimed in claim 9, it is characterised in that described first judge module tool Body is used for:

11. network equipments as claimed in claim 8, it is characterised in that described first judge module tool Body is used for:

12. network equipments as claimed in claim 11, it is characterised in that described first judge module Specifically for:

13. network equipments as claimed in claim 8, it is characterised in that described first judge module is also For:

Wherein, X is positive integer.

14. 1 kinds of subscriber equipmenies reducing interference, it is characterised in that this subscriber equipment includes:

Receiver module, individual for receiving the effective PRB from the current downlink of network equipment notice is total Counting and there is not the position that strongly disturbing subband is wide, effective PRB number that wherein current downlink is total is to connect Enter not exist on the subband width in the carrier wave in frequency range strongly disturbing subband width comprises total PRB Number；

15. 1 kinds of methods reducing interference, it is characterised in that the method includes:

16. methods as claimed in claim 15, it is characterised in that described subscriber equipment judges to access frequency Whether strong jamming is there is on subband width in carrier wave in the range of rate, including:

17. methods as claimed in claim 16, it is characterised in that described strong jamming judges that parameter includes One of the following:

18. methods as claimed in claim 15, it is characterised in that described subscriber equipment judges to access frequency Whether strong jamming is there is on subband width in carrier wave in the range of rate, including:

19. methods as claimed in claim 18, it is characterised in that described subscriber equipment is according to subband width Strong jamming judge parameter, determine the PRB ratio that at least one subband width is interfered, including:

20. as arbitrary in claim 15～17,19 as described in method, it is characterised in that described subscriber equipment Channel estimation process is carried out to by strongly disturbing subband width, including:

21. 1 kinds of subscriber equipmenies reducing interference, it is characterised in that the method includes:

22. subscriber equipmenies as claimed in claim 21, it is characterised in that described second judge module tool Body is used for:

23. subscriber equipmenies as described in claim 22 or 23, it is characterised in that described strong jamming judges Parameter includes one of the following:

24. subscriber equipmenies as claimed in claim 21, it is characterised in that described second judge module tool Body is used for:

25. subscriber equipmenies as claimed in claim 24, it is characterised in that described second judge module tool Body is used for:

26. as arbitrary in claim 21～23,25 as described in subscriber equipment, it is characterised in that described second Processing module specifically for: