CN110365363A - A kind of signal pickup assembly and acquisition method with transmitting blanking compensation - Google Patents

A kind of signal pickup assembly and acquisition method with transmitting blanking compensation Download PDF

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Publication number
CN110365363A
CN110365363A CN201910638689.3A CN201910638689A CN110365363A CN 110365363 A CN110365363 A CN 110365363A CN 201910638689 A CN201910638689 A CN 201910638689A CN 110365363 A CN110365363 A CN 110365363A
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CN
China
Prior art keywords
blanking
signal
correlation
calculation
compensation
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CN201910638689.3A
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Chinese (zh)
Inventor
丁峰
马世银
王春锋
王欢
郝强
张榕榕
杜晓华
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西安航天天绘数据技术有限公司
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Priority to CN201910638689.3A priority Critical patent/CN110365363A/en
Publication of CN110365363A publication Critical patent/CN110365363A/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40Circuits
    • H04B1/54Circuits using the same frequency for two directions of communication
    • H04B1/56Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions

Abstract

The present invention relates to a kind of signal pickup assemblies and acquisition method with transmitting blanking compensation.For compensating the expected collision received between signal and transmitting signal.Blanking block, to signal progress blanking is received, stops blanking when emitting signal and stopping, to provide the reception signal with blanking when emitting signal and being sent.Related blocks by the reception signal with blanking and with it is expected to receive the consistent known symbol sequence of signal associated, and export the symbolic number of calculation of correlation and blanking.This method adjusts calculation of correlation or variable thresholding using blanking symbolic number.Calculation of correlation adjusted is compared by decision block with fixed threshold or variable thresholding, if calculation of correlation adjusted is more than threshold value or variable thresholding, decision block will confirmly detect useful signal.The transmission-receiving function while present invention realizes data-link.Provide the signal acquisition with transmitting blanking compensation.

Description

A kind of signal pickup assembly and acquisition method with transmitting blanking compensation

Technical field

The present invention relates to communication, tactical data link, especially a kind of signal with transmitting blanking compensation technique is adopted Collect tactical data link.

Background technique

Data link system is the one kind being currently in development using the full-duplex mode sent all the way with the reception of four tunnels simultaneously Network construction form is simple, ad hoc network and exchange key carry out at any time high speed, dynamic ad hoc network.Data-link supports more than 200 a users The jamproof transmission of safety simultaneously, and need not design in advance, transmitting-receiving while may be implemented no-delay.High-speed data chain network is logical Cross the precise position data that network center's sensing technology can be associated with time critical target between multiple platforms.Each data-link is used There are 2Mbps transmission and the received ability of 10Mbps in family, and communication distance is supported public from 160 kilometers of 2Mbps to 250kbps 480 In, and the built-in transmission power control algorithm of data-link.

Data-link is that an internal subgroup relays the network being fully connected, therefore task does not need planning network in advance, branch Hold the application of broadcast, multicast and point-to-point services.Network security is by certification, information safety key distribution and multiple individual secure etc. Grade provides.The built-in quality-of-service and service Attribute class of data-link support the processing delay of 5s networking, 1.7ms.Data chain space One characteristic of signal is that terminal in a frequency range while can send and receive information.Success obtains an input signal pair Data link system is vital.

The successful reception that input signal is realized under the function that data-link is received and dispatched simultaneously, needs using a kind of with transmitting The signal acquisition method of blanking compensation.

Summary of the invention

The present invention provides a kind of signal pickup assembly and acquisition method with transmitting blanking compensation, data chain space letters Number an autonomous behavior be terminal can in a frequency range and meanwhile receive and transmitting information, therefore successfully obtain one input Data signal chain is vital.The present invention is connect using the signal acquiring system of transmitting blanking compensation by compensating expection Collision between the collection of letters number and transmitting signal, makes it possible to receive and dispatch simultaneously.

A kind of signal pickup assembly with transmitting blanking compensation, comprising:

1) for receiving the blanking block and blanking signal of input signal, when terminal sends signal, blanking signal is effective, when Blanking signal is invalid at the end of transmission, to provide the reception signal with blanking;

2) blanking from blanking block received is received signal and known symbol sequence and is associated by related blocks, and known Symbol sebolic addressing is consistent with expected reception signal, while related blocks output calculation of correlation and the blanking symbol for calculating calculation of correlation every time Number;

3) using blanking symbolic number go adjustment calculation of correlation or variable thresholding in one, and it is adjusted be worth to it is related Measurement is compared;

4) calculation of correlation adjusted is compared by decision block with fixed threshold or variable thresholding, if phase adjusted Closing measurement is more than threshold value or variable thresholding, and decision block will confirmly detect required signal.

As a further solution of the present invention, or the reception signal with blanking it is arranged to a value to indicate blanking signal Effectively, wherein blanking signal is effective during emitting pulse high level, invalid between the time interval of two pulses.

As a further solution of the present invention, adjustment variable thresholding includes threshold calculation, for calculating from related blocks Blanking symbolic number determine variable thresholding, while to related blocks generate each calculation of correlation will once be calculated.

As a further solution of the present invention, the method for adjusting calculation of correlation includes:

(1) gain calculation block is used to calculate the variable gain determined from the blanking symbolic number in related blocks, to correlation Each calculation of correlation that block generates will be calculated once;

(2) multiplier of adjustment calculation of correlation is removed with variable gain.

As a further solution of the present invention, related blocks include multiple sub- correlators, described device further include:

(1) multiple gain calculation blocks, for calculating variable gain from the blanking symbol of multiple sub- correlators;

(2) remove to adjust the multiplier of sub- calculation of correlation with the variable gain of every sub- correlator;

(3) block is added up for every sub- correlator calculation of correlation adjusted in multiple sub- correlators that add up, to generate Calculation of correlation adjusted.

A kind of signal acquisition method with transmitting blanking compensation, includes the following steps:

1) when the meeting blanking of the transmitting signal of transmission receives signal, the blanking signal in blanking block is effective;

2) when sending reception signal of the signal stopping offer with blanking, blanking signal is invalid;

3) blanking from blanking block received is received signal and known symbol sequence and is associated by related blocks, and known Symbol sebolic addressing is consistent with expected reception signal;

4) related blocks output calculation of correlation and every time the blanking symbolic number of calculating calculation of correlation;

5) one in adjustment calculation of correlation or variable thresholding is gone using blanking symbolic number;

6) calculation of correlation adjusted is compared by decision block with fixed threshold or variable thresholding;

If 7) calculation of correlation adjusted is more than threshold value or variable thresholding, decision block will confirmly detect required letter Number;

As a further solution of the present invention, further include step 8), threshold calculation calculate it is true from blanking symbolic number Fixed variable thresholding, wherein each calculation of correlation generated to related blocks will be calculated once.

As a further solution of the present invention, the reception signal with blanking is arranged to a value to indicate that blanking signal has Effect;Include the steps that as follows:

Blanking signal is effective during emitting pulse high level;Blanking signal nothing between the time interval of two pulses Effect;

One gain calculation block calculates the variable gain determined from blanking symbolic number, and to each phase that related blocks generate Closing measurement will once be calculated;The multiplier of adjustment calculation of correlation is removed with variable gain.

A kind of signal acquisition method with transmitting blanking compensation, its step are as follows:

(1) the reception signal with blanking received is related to the known array of multiple sub- correlators, obtain multiple sub- phases Close measurement;

(2) multiple blanking symbolic numbers of multiple sub- correlators are provided;

(3) variable gain determined by blanking symbolic number is calculated;

(4) multiple sub- calculations of correlation are adjusted with multiple variable gains;

(5) it adds up to sub- calculation of correlation adjusted, the calculation of correlation after being adjusted.

A kind of signal acquisition method with transmitting blanking compensation, its step are as follows:

1) in the presence of emitting signal, blanking is carried out to the signal received by using blanking block, to provide band blanking Reception signal;

2) in the absence of emitting signal, blanking signal does not carry out blanking to reception signal;

3) the reception signal with blanking and known array are associated with related blocks, wherein the reason of calculation of correlation is reduced It is to be blanked since part receives signal;

4) reduced calculation of correlation is compensated;

5) judge that desired signal whether there is according to the calculation of correlation of the reduction of compensation;

6) the step of compensation reduces calculation of correlation is further illustrated:

7) blanking symbolic number is provided;

8) variable gain determined by blanking symbolic number is calculated;

9) reduced calculation of correlation is adjusted with variable gain;

10) calculation of correlation of reduction more adjusted and a threshold value;

11) decide whether that there are desired signals according to the consistency of the calculation of correlation of reduction and threshold value.

The present invention discloses a kind of signal acquisition method with transmitting blanking compensation, for compensate it is expected receive signal with Emit the collision between signal.Blanking block, to signal progress blanking is received, stops when emitting signal and being sent in transmitting signal When stop blanking, with provide have blanking reception signal.Related blocks receive signal by the reception signal with blanking and with expected Consistent known symbol sequence is associated, and exports calculation of correlation and blanking symbolic number.This method is adjusted using blanking symbolic number Whole calculation of correlation or variable thresholding.Degree of correlation magnitude adjusted is compared by decision block with fixed threshold or variable thresholding, If degree of correlation magnitude adjusted is more than threshold value or variable thresholding, decision block will confirmly detect useful signal.

The method for adjusting variable thresholding includes based on from the threshold value that the blanking symbolic number in related blocks calculates variable thresholding Calculate block.The each calculation of correlation threshold calculation generated to related blocks will be calculated once.

The method for adjusting calculation of correlation includes based on from the gain that the blanking symbolic number in related blocks calculates variable gain Calculate block.The each calculation of correlation gain calculation block generated to related blocks will be calculated once.Adjustment phase is gone with variable gain Close the multiplier of measurement.

The present invention provides a kind of method of input signal successful acquisition come transmission-receiving function while realizing data-link.The present invention Realize the expected purpose for receiving signal and emitting the collision between signal of compensation.The present invention provides have transmitting blanking compensation Signal acquisition.When making decision existing for expected signal, threshold value can change the present invention with blanking symbolic number.The present invention mentions A kind of optional embodiment that calculation of correlation changes with blanking symbolic number is supplied.

Detailed description of the invention

Fig. 1 is type signal acquisition system;

Fig. 2 is the multithread waveform that certain node is reached in different time with specific frequency-hopping mode in data-link;

Fig. 3 is the signal acquiring system compensated with blanking;

Fig. 4 is a kind of optional embodiment of signal acquiring system with blanking compensation;

Fig. 5 is the signal acquiring system of associated subset blanking compensation.

Specific embodiment

The present invention is further elaborated in the following with reference to the drawings and specific embodiments.

The present invention is a kind of signal acquisition method and device with transmitting blanking compensation for wireless communication system, and Wireless terminal can emit and receive simultaneously information in same frequency range.

It is suitable for similar communication system.It is a kind of to combine the signal in the present invention with transmitting blanking compensation The receiver of acquisition can receive the collision between transmitting signal when concurrent transmitter is transmitted to obtain expection by compensation Reception signal.The present disclosure additionally applies for the receivers in the communication system by strong jamming or interference signal, compensate expected receive Collision between signal and strong jamming or interference signal.

Fig. 1 describes one using the type signal of a related blocks 11 and the decision block 13 of fixed threshold acquisition system System 10.The reception signal and known symbol sequence of input are associated by related blocks 11, it is known that symbol sebolic addressing is consistent with desired signal. Related blocks 11 generate a calculation of correlation to measure the matching degree of input signal and known array.Decision block 13 is by calculation of correlation It is compared with fixed threshold, if calculation of correlation is more than threshold value, decision block 13 will confirmly detect desired signal.Fixed threshold Value is usually compromised in false alarm rate and the value successfully being detected between desired signal probability to determine.

A feature of sending and receiving data chain space signal is that terminal is allowed in same frequency range while to receive and dispatch simultaneously, this be by Sending and receiving data chain space structure determines simultaneously.Simultaneously sending and receiving data chain message be made of many pulses (or standing wave), puppet with It is transmitted on the frequency of machine selection and pseudorandom pulse interval.Under normal circumstances, any two data-link message has not Same pseudo-random hopping pattern and different pseudo-random pulse time intervals.

Fig. 2 illustrates the correlation of the multithread in data-link and reception condition.The top layer of Fig. 2 shows multiple waveforms with specific Frequency hopping pattern reaches certain node in data-link in different time.The bottom of Fig. 2 is shown to be gone from not homologous multi-stream data packet Toward different processing units.Such as processing unit 1 receives cross influence with the frequency for being different from other processing units and arrival time Data packet, so that the receiver for allowing to handle such multithread can receive multiple data packet streams.

When a data-link terminal is sending a piece of news and is attempting to receive another a piece of news, some letters for receiving It number can collide with the signal of transmission.In general, transmission power is sufficiently high may insure the entire frequency band in sending pulse It is insensitive.It means that the pulse of transmitting is not necessarily intended to collide with reception pulse frequency having the same.Due to pulse Between interval be it is pseudorandom, it is some can be properly received with the reception signals that collide of signal are sent.Due to same When sending and receiving data chain message contain forward error correction coding, therefore data-link terminal can restore received while sending and disappear Breath.

Data-link terminal, which must first obtain signal, could restore information, and shown in FIG. 1 is type signal acquisition system 10, but The input signal acquired when transmitting signals be it is insufficient, this is because 10 uncompensation of system receive signal and transmitting signal it Between conflict.System 10 can not calculate the time that collision occurs, and also can not carry out elimination of hidden to collision alarm.Related blocks 11 are tried Figure is with associated with the reception signal of the consistent known symbol sequence of desired signal and input.The function mode of related blocks 11 be as The signal section that fruit receives is blanked, then calculation of correlation is not contributed in the part being blanked, to reduce calculation of correlation. If not providing the method as the compensation calculation of correlation reduction such as adjustment threshold value or change calculation of correlation, possibly signal can not be carried out Acquisition.

Solution to this problem is the signal acquisition method and dress of a kind of band transmitting blanking compensation provided by the invention It sets.Fig. 3 is the signal acquiring system 20 with transmitting blanking compensation technique in the present invention.The system is to typical letter shown in FIG. 1 The enhancing of number acquisition system 10.Believe with the signal acquiring system 20 that transmitting blanking compensates to compensate expected reception signal and transmitting Collision between number.Signal acquiring system with transmitting blanking compensation is the quantity by colliding to adjust variable thresholding Or change the gain of calculation of correlation to realize.

Blanking block 15 in Fig. 3, which receives, to be received signal and carrys out the blanking signal of transmitter in self terminal, when there is signal quilt When transmission, blanking signal is effective, and when sending stopping, blanking signal is invalid.For data-link terminal, disappear during sending pulse Hidden signal is effective, and blanking signal is invalid in the time interval of two pulses.Blanking signal may be from similar communication system In concurrent transmitter, and concurrent transmitter send when generate.Receiver may also when having high reject signal or interference signal Blanking signal is generated, in the presence of having interference signal, receiver provides blanking signal while receiving interference signal.

Blanking block 15, which will change, receives signal to indicate that blanking signal is effective, the referred to as reception signal of blanking.The one of blanking Kind of method be received signal value is arranged to+1, -1 or some other value indicate that blanking signal is effective.Some other side Method is also possible, such as the method that blanking signal exports together with signal is received.

Related blocks 11a shown in Fig. 3 in the present invention calculates calculation of correlation every time and exports blanking symbolic number, gives any Fixed time, output blanking symbolic number are all known array relevant to signal is received corresponding blanking symbolic numbers in time. In the present invention, the blanking symbol used by calculating each calculation of correlation, can be by changing threshold value or changing gain Method goes calculation of correlation that adjustment member is blanked and the reception signal to calculation of correlation without contribution.

Threshold calculation 17 exports the variable thresholding determined by blanking symbolic number.The correlation that each related blocks 11a is calculated Measurement, calculation block 17 all occur once.Symbol is blanked rear with regard to being one shorter as a short sequence of known symbol Correlator.When desired signal occurs, a short correlator generates a lower calculation of correlation, when not having signal input When, a short correlator can also generate a low calculation of correlation.In order to compensate for this point, variable thresholding will be accorded with blanking The increase of number and reduce.Some algorithms can be used and calculate variable thresholding, the selection of algorithm is based in false alarm rate and successfully examining Measure the compromise between the probability of desired signal.Finally, decision block 13 compares calculation of correlation and variable thresholding, if calculation of correlation More than threshold value, then decision block is thought to detect signal.

Fig. 4 is the optional embodiment 30 of of the invention one signal acquisition with transmitting blanking compensation.Use gain Calculation block 19 calculates variable gain to replace calculating variable thresholding.Variable gain adjusts calculation of correlation by multiplier 21, so Fixed threshold in calculation of correlation more adjusted and decision block 13 afterwards.Embodiment is mathematically with the description of Fig. 3 Valence, it may be more preferable in other certain applications.

In certain circumstances, it may be necessary to which the sub- related blocks to related blocks 11a shown in Fig. 5 are compensated using transmitting blanking.? In this embodiment, related blocks 11a is decomposed into multiple sub- correlator such as 11b, 11c, 11d and may not also have comprising other in Fig. 4 There is display, cumulative block 22 sums multiple remainders the calculation of correlation after forming final adjustment.Every sub- correlator has one Gain calculation block 19a, 19b, 19c are that every sub- correlator generates variable gain, every sub- variable gain by multiplier 21a, 21b, 21c correspond to a sub- calculation of correlation of sub- correlator 11b, 11c, 11d to adjust.Therefore, every height correlation is all independent Adjustment and better than final related and cumulative block 22.Finally final related and cumulative block 22 and the fixation threshold in decision block 13 Value is compared.

The above is present pre-ferred embodiments, for the ordinary skill in the art, according to the present invention Introduction, in the case where not departing from the principle of the present invention and spirit, changes, modifications, replacement and change that embodiment is carried out Type is still fallen within protection scope of the present invention.

Claims (10)

1. a kind of signal pickup assembly with transmitting blanking compensation, comprising:
1) for receiving the blanking block and blanking signal of input signal, when terminal sends signal, blanking signal is effective, works as transmission At the end of blanking signal it is invalid, to provide the reception signal with blanking;
2) blanking from blanking block received is received signal and known symbol sequence and is associated by related blocks, and known symbol Sequence is consistent with expected reception signal, while related blocks output calculation of correlation and the blanking symbolic number for calculating calculation of correlation every time;
3) one in adjustment calculation of correlation or variable thresholding is gone using blanking symbolic number, and value adjusted and calculation of correlation It is compared;
4) calculation of correlation adjusted is compared by decision block with fixed threshold or variable thresholding, if the degree of correlation adjusted Amount is more than threshold value or variable thresholding, and decision block will confirmly detect required signal.
2. a kind of signal pickup assembly with transmitting blanking compensation according to claim 1, which is characterized in that or band The reception signal of blanking is arranged to a value to indicate that blanking signal is effective, and wherein blanking signal is during emitting pulse high level Effectively, invalid between the time interval of two pulses.
3. a kind of signal pickup assembly with transmitting blanking compensation according to claim 1, which is characterized in that adjustment can Variable threshold value includes threshold calculation, for calculating the variable thresholding determined from the blanking symbolic number in related blocks, while to correlation Each calculation of correlation that block generates will be calculated once.
4. a kind of signal pickup assembly with transmitting blanking compensation according to claim 1, which is characterized in that adjustment phase Closing the method measured includes:
(1) gain calculation block is used to calculate the variable gain determined from the blanking symbolic number in related blocks, produces to related blocks Raw each calculation of correlation will be calculated once;
(2) multiplier of adjustment calculation of correlation is removed with variable gain.
5. a kind of signal pickup assembly with transmitting blanking compensation according to claim 1, which is characterized in that related blocks Including multiple sub- correlators, described device further include:
(1) multiple gain calculation blocks, for calculating variable gain from the blanking symbol of multiple sub- correlators;
(2) remove to adjust the multiplier of sub- calculation of correlation with the variable gain of every sub- correlator;
(3) block is added up for every sub- correlator calculation of correlation adjusted in multiple sub- correlators that add up, to generate adjustment Calculation of correlation afterwards.
6. a kind of signal acquisition method with transmitting blanking compensation, which comprises the steps of:
1) when the meeting blanking of the transmitting signal of transmission receives signal, the blanking signal in blanking block is effective;
2) when sending reception signal of the signal stopping offer with blanking, blanking signal is invalid;
3) blanking from blanking block received is received signal and known symbol sequence and is associated by related blocks, and known symbol Sequence is consistent with expected reception signal;
4) related blocks output calculation of correlation and every time the blanking symbolic number of calculating calculation of correlation;
5) one in adjustment calculation of correlation or variable thresholding is gone using blanking symbolic number;
6) calculation of correlation adjusted is compared by decision block with fixed threshold or variable thresholding;
If 7) calculation of correlation adjusted is more than threshold value or variable thresholding, decision block will confirmly detect required signal.
7. a kind of signal acquisition method with transmitting blanking compensation as claimed in claim 6, which is characterized in that further include step It is rapid 8), threshold calculation calculate the variable thresholding determined from blanking symbolic number, wherein each correlation that related blocks are generated Measurement will be calculated once.
8. a kind of signal acquisition method with transmitting blanking compensation as claimed in claim 6, which is characterized in that band blanking Reception signal be arranged to a value to indicate that blanking signal is effective;Include the steps that as follows:
Blanking signal is effective during emitting pulse high level;Blanking signal is invalid between the time interval of two pulses;
One gain calculation block calculates the variable gain determined from blanking symbolic number, and to each degree of correlation that related blocks generate Amount will be calculated once;The multiplier of adjustment calculation of correlation is removed with variable gain.
9. a kind of signal acquisition method with transmitting blanking compensation, which is characterized in that its step are as follows:
(1) the reception signal with blanking received is related to the known array of multiple sub- correlators, obtain multiple sub- degrees of correlation Amount;
(2) multiple blanking symbolic numbers of multiple sub- correlators are provided;
(3) variable gain determined by blanking symbolic number is calculated;
(4) multiple sub- calculations of correlation are adjusted with multiple variable gains;
(5) it adds up to sub- calculation of correlation adjusted, the calculation of correlation after being adjusted.
10. a kind of signal acquisition method with transmitting blanking compensation, which is characterized in that its step are as follows:
1) in the presence of emitting signal, blanking is carried out to the signal received by using blanking block, to provide connecing with blanking The collection of letters number;
2) in the absence of emitting signal, blanking signal does not carry out blanking to reception signal;
3) the reception signal with blanking and known array are associated with related blocks, wherein calculation of correlation reduce the reason of be by Signal is received in part to be blanked;
4) reduced calculation of correlation is compensated;
5) judge that desired signal whether there is according to the calculation of correlation of the reduction of compensation;
6) the step of compensation reduces calculation of correlation is further illustrated:
7) blanking symbolic number is provided;
8) variable gain determined by blanking symbolic number is calculated;
9) reduced calculation of correlation is adjusted with variable gain;
10) calculation of correlation of reduction more adjusted and a threshold value;
11) decide whether that there are desired signals according to the consistency of the calculation of correlation of reduction and threshold value.
CN201910638689.3A 2019-07-16 2019-07-16 A kind of signal pickup assembly and acquisition method with transmitting blanking compensation CN110365363A (en)

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CN1564591A (en) * 2004-04-09 2005-01-12 南京大学 Method and appts. for duplex transmitting video signal and controlling data
US7508887B1 (en) * 2005-09-06 2009-03-24 Rockwell Collins, Inc. Signal acquisition with transmit blanking compensation
CN102656837A (en) * 2009-12-18 2012-09-05 高通股份有限公司 Wireless communication channel blanking
CN106233792A (en) * 2014-04-17 2016-12-14 高通股份有限公司 Use data channel and control the method that the self adaptation transmitting blanking of channel improves the handling capacity in many SIM multi-activity scene
CN107534544A (en) * 2015-04-27 2018-01-02 高通股份有限公司 Alleviate the influence for transmitting blanking during uplink communication

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1564591A (en) * 2004-04-09 2005-01-12 南京大学 Method and appts. for duplex transmitting video signal and controlling data
US7508887B1 (en) * 2005-09-06 2009-03-24 Rockwell Collins, Inc. Signal acquisition with transmit blanking compensation
CN102656837A (en) * 2009-12-18 2012-09-05 高通股份有限公司 Wireless communication channel blanking
CN106233792A (en) * 2014-04-17 2016-12-14 高通股份有限公司 Use data channel and control the method that the self adaptation transmitting blanking of channel improves the handling capacity in many SIM multi-activity scene
CN107534544A (en) * 2015-04-27 2018-01-02 高通股份有限公司 Alleviate the influence for transmitting blanking during uplink communication

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