Radio frequency transceiver circuit, communication device and wireless communication method

Abstract

The application relates to a radio frequency transceiver circuit, a communication device and a wireless communication method, wherein the radio frequency transceiver circuit comprises a signal transmitting module, a signal receiving module and a harmonic elimination module, the harmonic elimination module is connected with the signal transmitting module and the signal receiving module; wherein the signal transmitting module is configured to transmit a first signal; the signal receiving module is configured to receive a second signal through the harmonic elimination module, wherein the second signal transmitted to the harmonic elimination module comprises a received signal from an antenna and a harmonic interference signal leaked from a transmitting link of the first signal to a receiving link of the second signal; the signal transmitting module is further configured to delay a time length and output an anti-interference signal to the harmonic elimination module according to the time length, so that the anti-interference signal and the harmonic interference signal are superimposed in the harmonic elimination module, and the harmonic interference signal is eliminated.

Description

Technical Field

[0001] This application relates to the field of antenna technology, and in particular to a radio frequency transceiver circuit, communication equipment, and wireless communication method. Background Technology

[0002] With the rapid development of mobile terminals, users have increasingly higher requirements for the communication quality of mobile terminals. However, with the continuous increase in radio frequency bands and band combinations, interference problems between frequency bands are becoming more and more common, especially harmonic interference problems caused by carrier aggregation. For example, in carrier aggregation of B8 and B3, B8's uplink frequency range is 880M-915M, and its second harmonic frequency offset range is 1760M-1830M, while B3's downlink frequency range is 1805M-1880M. It can be seen that the second harmonic of B8 falls exactly on the downlink frequency band of B3, which can lead to severe interference between B8 and B3.

[0003] Therefore, harmonic interference is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] This application provides a radio frequency transceiver circuit, a communication device, and a wireless communication method that can eliminate harmonic interference signals.

[0005] In a first aspect, this application provides a radio frequency transceiver circuit, comprising: a signal transmitting module, a signal receiving module, and a harmonic cancellation module, wherein the harmonic cancellation module is connected to the signal transmitting module and the signal receiving module respectively; wherein...

[0006] The signal transmitting module is configured to transmit a first signal;

[0007] The signal receiving module is configured to receive a second signal from the antenna via the harmonic cancellation module, wherein the second signal transmitted to the harmonic cancellation module includes a received signal from the antenna and harmonic interference signals leaked from the transmission link of the first signal to the receiving link of the second signal;

[0008] The signal transmitting module is further configured to: acquire a delay duration and output an anti-interference signal to the harmonic elimination module according to the delay duration, so that the anti-interference signal and the harmonic interference signal are superimposed in the harmonic elimination module to eliminate the harmonic interference signal; wherein, the delay duration is the time length between the moment when the harmonic interference signal leaks to the harmonic elimination module and the moment when the signal transmitting module sends the first signal; the phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, and the anti-interference power of the anti-interference signal and the interference power of the harmonic interference signal are within a preset range.

[0009] Secondly, this application also provides a wireless communication method applied to a signal transmitting module, the signal transmitting module being used to transmit a first signal, wherein the method includes:

[0010] Acquire a second signal transmitted to the harmonic cancellation module; wherein the second signal includes a received signal from the antenna and a harmonic interference signal leaked from the transmission link of the first signal to the reception link of the second signal;

[0011] Obtain the delay duration; wherein, the delay duration is the time length between the moment when the harmonic interference signal leaks to the harmonic cancellation module and the moment when the signal transmission module sends the first signal;

[0012] An anti-interference signal is generated based on the interference power and phase of the harmonic interference signal. The phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, and the anti-interference power of the anti-interference signal is within a preset range from the interference power.

[0013] An anti-interference signal is output to the harmonic cancellation module according to the delay duration, so that the anti-interference signal and the harmonic interference signal cancel each other out in the harmonic cancellation module.

[0014] Thirdly, this application also provides a communication device. The communication device includes the aforementioned radio frequency transceiver circuit.

[0015] Fourthly, this application also provides a communication device. The communication device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to perform the following steps:

[0016] Acquire a second signal transmitted to the harmonic cancellation module; wherein the second signal includes a received signal from the antenna and a harmonic interference signal leaked from the transmission link of the first signal to the reception link of the second signal;

[0017] Obtain the delay duration; wherein, the delay duration is the time length between the moment when the harmonic interference signal leaks to the harmonic cancellation module and the moment when the signal transmission module sends the first signal;

[0018] An anti-interference signal is generated based on the interference power and phase of the harmonic interference signal. The phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, and the anti-interference power of the anti-interference signal is within a preset range from the interference power of the harmonic interference signal.

[0019] An anti-interference signal is output to the harmonic cancellation module according to the delay duration, so that the anti-interference signal and the harmonic interference signal cancel each other out in the harmonic cancellation module.

[0020] The aforementioned radio frequency transceiver circuit, communication equipment, and wireless communication method can respectively acquire the received signal from the antenna transmitted to the harmonic cancellation module and the harmonic interference signal leaked from the transmission link of the first signal to the receiving link of the second signal, as well as the delay time between the moment the harmonic interference signal leaks to the harmonic cancellation module and the moment the signal transmission module sends the first signal. Based on the delay time, an anti-interference signal is output to the harmonic cancellation module so that the anti-interference signal and the harmonic interference signal are superimposed in the harmonic cancellation module, thereby eliminating the harmonic interference signal. Since the phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, and the anti-interference power of the anti-interference signal and the interference power of the harmonic interference signal are within a preset range, the harmonic cancellation module can synchronously receive the anti-interference signal and the harmonic interference signal. Based on the fact that the anti-interference signal can completely cancel the harmonic interference signal, the effect of eliminating harmonic interference is achieved. Compared with related technologies, it does not affect the quality of the first signal and the received signal in carrier aggregation combinations, dual-SIM DSDA combinations, or ENDC combinations, nor does it increase the transmission path loss, thus improving the communication performance of various combinations such as carrier aggregation, dual-SIM DSDA, or ENDC. Attached Figure Description

[0021] Figure 1 This is an architecture diagram of communication equipment in related technologies;

[0022] Figure 2 This is a block diagram of the internal structure of the radio frequency transceiver circuit in one embodiment;

[0023] Figure 3 This is a block diagram of the internal structure of the radio frequency transceiver circuit in another embodiment;

[0024] Figure 4 This is a graph showing the relationship between transmit power and jamming power in another embodiment;

[0025] Figure 5 This is an architecture diagram of a communication device in one embodiment;

[0026] Figure 6 This is a flowchart illustrating a wireless communication method in one embodiment;

[0027] Figure 7 This is a schematic diagram of the process for obtaining the delay duration in one embodiment;

[0028] Figure 8 This is a schematic diagram of the process for obtaining the delay duration in another embodiment;

[0029] Figure 9 This is a schematic diagram of the process for obtaining the interference power of a harmonic interference signal in one embodiment;

[0030] Figure 10 This is a flowchart illustrating the process of obtaining the interference power of the harmonic interference signal in another embodiment;

[0031] Figure 11 This is a diagram of the internal structure of a communication device in another embodiment.

[0032] Explanation of icon numbers:

[0033] 111 - Filters in related technologies; 112 - Power amplifiers in related technologies;

[0034] 20 - Radio frequency transceiver circuit; 210 - Signal transmitting module; 220 - Signal receiving module;

[0035] 230 - Harmonic elimination module; 231 - Adder;

[0036] 240 - Modulation circuit; 241 - First filter; 242 - First mixer; 243 - Digital-to-analog converter;

[0037] 250 - Demodulation circuit; 251 - Low-noise amplifier; 252 - Second mixer; 253 - Third filter; 254 - Analog-to-digital converter;

[0038] 310 - Transmit link; 320 - Receive link; 330 - Sub-transmit link; 340 - Sub-receive link;

[0039] 350 - First duplexer; 360 - Second duplexer; 370 - Combiner. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0041] With the increasing number of radio frequency bands and band combinations, interference between bands is becoming more and more common, especially LTE harmonic interference (CA). For example, in CA B8+B3, B8's TX frequency range is 880MHz-915MHz, with a second harmonic frequency offset range of 1760MHz-1830MHz, while B3's RX frequency range is 1805MHz-1880MHz. It can be seen that B8's second harmonic falls precisely on B3's RX band. When the layout or antenna isolation between the two bands is poor, B8 can severely interfere with B3. CA interference includes second and third harmonics, but the higher the order of the harmonic, the weaker the interference and the smaller the signal. CA interference is a common problem in existing mobile terminals and needs to be addressed by mobile manufacturers to avoid affecting the user's communication experience. Taking B8+B3 as an example... Figure 1 The following explanation uses the communication device shown as an example.

[0042] like Figure 1 The signal interference path shown is as follows: the second harmonic interference signal of B8 is coupled to the receiving RX path of B3 through the board level. When B8+B3 carrier aggregation is working, B8 acts as the primary carrier component (PCC), and the second harmonic interference signal of B8 will severely interfere with the receiving RX path of B3.

[0043] To address the interference problem caused by carrier aggregation, mobile terminals in related technologies typically reduce harmonic interference by lowering the power of the main wave signal and by adding filters to the transmission path. However, the following problems still exist:

[0044] Firstly, when the problem of carrier aggregation interference is solved by reducing the power of the main wave signal, it will affect the quality of the first signal in the carrier aggregation and also affect the user experience.

[0045] Secondly, when adding a filter 111 (located at the output of power amplifier 112) to the B8 transmission path to solve the carrier aggregation interference problem, it increases hardware costs and transmission path loss, affecting the transmission and reception quality of B8. Furthermore, when the second harmonic interference signal is coupled out through the power amplifier 111 in the B8 transmission path, it will not pass through the low-pass filter 112 in the B8 transmission path, thus failing to filter the interference signal.

[0046] Based on this, this application provides a radio frequency transceiver circuit that detects the phase and power of the harmonic interference signal and the delay time of the harmonic interference signal leaking to the harmonic cancellation module relative to the transmission module when it sends a first signal. Then, based on the delay time, an anti-interference signal is generated. In the harmonic cancellation module, the anti-interference signal and the harmonic interference signal are superimposed. Since the phase of the anti-interference signal and the harmonic interference signal are opposite, and the anti-interference power of the anti-interference signal and the interference power are within a preset range, the harmonic interference signal can be completely canceled, thereby achieving the purpose of eliminating harmonic interference.

[0047] like Figure 2 As shown, this application embodiment provides a radio frequency transceiver circuit. The radio frequency transceiver circuit 20 includes a signal transmitting module 210, a signal receiving module 220, and a harmonic cancellation module 230, wherein the harmonic cancellation module 230 is connected to the signal transmitting module 210 and the signal receiving module 220 respectively.

[0048] The signal transmitting module 210 is configured to transmit a first signal. The signal receiving module 220 is configured to receive a second signal via the harmonic cancellation module 230. The second signal includes a received signal from antenna ANT1 and harmonic interference signals leaked from the transmitting link of the first signal to the receiving link of the second signal. In this embodiment, the first signal and the received signal have different frequency bands, and they can be transmitted and received simultaneously. For example, the first signal is B8, the received signal is B3, and the harmonic interference signal is the second harmonic of B8. In this embodiment, the transmitting link 310 can be connected as an external link to the RF transceiver circuit 20, which can amplify and filter the first signal output by the signal transmitting module 210, and then transmit the processed first signal to antenna ANT1, which radiates it into free space. The receiving link 320 can be connected as an external link to the radio frequency transceiver circuit 20. It can perform filtering, low-noise amplification, and other processing on the second signal, and then transmit the processed second signal to the harmonic cancellation module 230. After processing by the harmonic cancellation module 230, it is transmitted to the signal receiving module 220.

[0049] If the second signal includes harmonic interference signals leaked from the first signal on the transmit link 310 to the receive link 320, then the frequency ranges of the harmonic signals of the first signal and the received signal overlap. It is understood that the combination of the first signal and the received signal can include, but is not limited to, LTE CA interference combinations, NR CA interference combinations, dual-SIM DSDA interference combinations, and ENDC interference combinations. LTE CA interference combinations include, but are not limited to, B8+B41 (third harmonic interference), B8+B7 (second harmonic interference), and B8+B3 (second harmonic interference) combinations. For example, when B8+B3 CA is working, B8 acts as the primary carrier component (PCC), and the second harmonic of B8 will severely interfere with B3 RX, etc. NR CA interference combinations include, but are not limited to, N8+N41 (third harmonic interference). Dual-SIM DSDA interference combinations include, but are not limited to, LTE+LTE (e.g., B8+B41), LTE+NR (e.g., B8+N41), and NR+NR (e.g., N8+N41). ENDC interference combinations include, but are not limited to, B3+N78.

[0050] The signal transmitting module 210 is also configured to: acquire the delay duration and output an anti-interference signal to the harmonic cancellation module 230 based on the delay duration. The harmonic cancellation module 230 can cancel out the harmonic interference signal using the available interference signal, thus eliminating the harmonic interference signal. The delay duration is the time between the moment the harmonic interference signal leaks to the harmonic cancellation module 230 and the moment the signal transmitting module 210 transmits the first signal. In addition to transmitting the first signal, the signal transmitting module 210 can also generate an anti-interference signal and output it to the harmonic cancellation module 230. The phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, and the anti-interference power of the anti-interference signal and the interference power of the harmonic interference signal are within a preset range. It is understood that the difference between the anti-interference power of the anti-interference signal and the interference power of the harmonic interference signal can approach 0. When the anti-interference power of the anti-interference signal and the interference power of the harmonic interference signal are within the preset range, the harmonic interference signal processed by the harmonic cancellation module 230 has no effect on the reception of the radio frequency transceiver circuit 20.

[0051] The signal transmitting module 210 can send an anti-interference signal to the harmonic cancellation module 230 based on the delay duration. The signal transmitting module 210 can obtain the delay duration and send the anti-interference signal to the harmonic cancellation module 230 according to the delay duration. In this way, the harmonic cancellation module 230 can receive the anti-interference signal and the harmonic interference signal at the same time point. Since the phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, the anti-interference power of the anti-interference signal and the interference power are within a preset range. Within the harmonic cancellation module 230, the anti-interference signal can completely cancel the harmonic interference signal, thereby achieving the effect of eliminating harmonic interference.

[0052] The radio frequency transceiver circuit provided in this embodiment includes a signal transmitting module, a signal receiving module, and a harmonic cancellation module. The harmonic cancellation module is connected to the signal transmitting module and the signal receiving module, respectively. The signal transmitting module can be used to transmit a first signal, and the signal receiving module can be used to receive a second signal via the harmonic cancellation module. The second signal transmitted to the harmonic cancellation module includes harmonic interference signals leaked from the transmission link of the first signal to the reception link of the second signal. In addition, the signal transmitting module can also obtain the delay time of the harmonic interference signal leaking to the harmonic cancellation module relative to the transmission of the first signal by the signal transmitting module, and output an anti-interference signal to the harmonic cancellation module according to the delay time, so that the anti-interference signal and the harmonic interference signal cancel each other in the harmonic cancellation module to eliminate the harmonic interference signal. Since the phase of the anti-interference signal is opposite to that of the harmonic interference signal, and the anti-interference power and interference power of the anti-interference signal are within a preset range, the anti-interference signal can completely cancel the harmonic interference signal within the harmonic cancellation module, thereby achieving the effect of eliminating harmonic interference. Compared with related technologies, it will not affect the quality of the first signal and the received signal in carrier aggregation combination, dual-card DSDA combination or ENDC combination, nor will it increase the transmission path loss, thereby improving the communication performance of various combinations such as carrier aggregation, dual-card DSDA or ENDC.

[0053] like Figure 3 As shown, in one embodiment, the radio frequency transceiver circuit 20 further includes a modulation circuit 240 and a demodulation circuit 250. The modulation circuit 240 is connected to the signal transmission module 210 and is used to modulate the first signal output by the signal transmission module 210. Optionally, the modulation circuit 240 may also include, but is not limited to, a first filter 241, a first mixer 242, a digital-to-analog converter 243, etc.

[0054] The demodulation circuit 250 is connected to the signal receiving module 220 and is used to demodulate the second signal from the antenna ANT1 and output it to the signal receiving module 220. Optionally, the demodulation circuit 250 may also include, but is not limited to, a low-noise amplifier 251, a second mixer 252, a third filter 253, an analog-to-digital converter 254, etc. In the embodiments of this application, the specific structure of the modulation circuit 240 and the demodulation circuit 250 is not further limited, nor is it limited to the examples described above.

[0055] It should be noted that, in this embodiment, the first signal and the anti-interference signal output by the signal transmitting module 210 can be understood as the corresponding baseband signals, which are the baseband signals before modulation by the modulation circuit 240, while the signal transmitted on the transmitting link 310 is the radio frequency signal modulated by the modulation circuit 240. Correspondingly, the second signal received by the signal receiving module 220 can be understood as the baseband signal corresponding to the second signal, which is the baseband signal demodulated by the demodulation circuit 250, while the signal transmitted on the receiving link 320 is the radio frequency signal before modulation by the demodulation circuit 250.

[0056] Please continue to refer to this. Figure 3 In one embodiment, the harmonic cancellation module 230 is an adder 231. The first input terminal of the adder 231 is connected to the signal transmitting module 210, the second input terminal is connected to the demodulation circuit 250, and the output terminal is connected to the signal receiving module 220. Since the signal transmitting module 210 can send an anti-interference signal to the adder 231 based on a delay duration, the adder 231 can synchronously receive the anti-interference signal from the signal transmitting module 210 and the harmonic interference signal from the receiving link 320, and superimpose the anti-interference signal and the harmonic interference signal to eliminate the harmonic interference signal. In the embodiments of the application, synchronous reception of the anti-interference signal and the harmonic interference signal can be understood as the time when the adder 231 receives the anti-interference signal and the time when the harmonic interference signal is received are the same, or the time difference between the time when the adder 231 receives the anti-interference signal and the time when the harmonic interference signal is received meets a threshold. If the threshold is met, synchronization can be considered. In this embodiment, the threshold can be set based on different frequency band combinations and the total link length (which is associated with the receiving link 320 and the transmitting link 310). Since the phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, and the anti-interference power of the anti-interference signal and the interference power of the harmonic interference signal are within a preset range, after being superimposed by the adder 231, the harmonic interference signal can be canceled out, achieving the technical effect of eliminating harmonic interference. Optionally, the adder 231 can be an adder chip or an adder circuit consisting of multiple logic circuits. In this embodiment, the specific form of the adder 231 is not limited, nor is it limited to the examples described above.

[0057] In this embodiment, an adder is used as a harmonic cancellation module. The two inputs of the adder are connected to the signal transmitting module and the receiving link, respectively. Since the signal transmitting module can send an anti-interference signal to the adder based on the delay duration, the adder simultaneously receives both the harmonic interference signal and the anti-interference signal. The anti-interference signal and the harmonic interference signal can be superimposed in the adder to eliminate the harmonic interference signal. The output signal of the adder is a harmonic-free received signal. Thus, the signal receiving module can process the received harmonic-free signal. Compared to related technologies, this does not affect the quality of the first signal and the received signal in carrier aggregation, dual-SIM DSDA, or ENDC combinations, nor does it increase transmission path loss, thereby improving the communication performance of various combinations such as carrier aggregation, dual-SIM DSDA, or ENDC.

[0058] In one embodiment, the signal transmitting module 210 is further configured to: configure at least one operating mode, determine the interference bandwidth according to the frequency band combination in the operating mode, construct the correspondence between the interference bandwidth and the delay duration of each interference combination, and determine the delay duration corresponding to the current frequency band combination according to the current frequency band combination and the correspondence.

[0059] In this embodiment, the operating mode can be LTE carrier aggregation mode, NR carrier aggregation mode, dual-SIM DSDA mode, and ENDC mode. The signal transmission module 210 can be configured with at least one of LTE carrier aggregation mode, NR carrier aggregation mode, dual-SIM DSDA mode, and ENDC mode. Specifically, LTE carrier aggregation mode can include at least one of LTE low-frequency + low-frequency band combinations, LTE low-frequency + mid-frequency band combinations, LTE low-frequency + high-frequency band combinations, and LTE mid-frequency + high-frequency band combinations. NR carrier aggregation mode can include at least one of NR low-frequency + low-frequency band combinations, NR low-frequency + mid-frequency band combinations, NR low-frequency + high-frequency band combinations, NR low-frequency + ultra-high-frequency band combinations, NR mid-frequency + high-frequency band combinations, NR mid-frequency + ultra-high-frequency band combinations, and NR high-frequency + ultra-high-frequency band combinations. Dual-SIM DSDA mode can include at least one of LTE + LTE band combinations, LTE + NR band combinations, and NR + NR band combinations. ENDC mode can include LTE + NR band combinations.

[0060] The signal transmission module 210 can determine the interference bandwidth based on the frequency band combinations included in the configured operating mode. In this embodiment, the frequency band combination with interference bandwidth can be referred to as an interference combination. For example, the B8+B41 combination, B8+B7 combination, and B8+B3 combination in LTE carrier aggregation mode are interference combinations; the N8+N41 combination, N8+N7 combination, and N8+N3 combination in NR carrier aggregation mode are interference combinations; LTE+LTE (e.g., B8+B41 combination), LTE+NR (e.g., B8+N41 combination), and NR+NR (e.g., N8+N41 combination) in dual-SIM DSDA mode are interference combinations; and the B3+N78 combination in ENDC mode is an interference combination.

[0061] The signal transmission module 210 can configure the number of resource blocks (RBs) and the starting resource block based on frequency band combinations. A resource block is the smallest unit of radio resource that can be allocated to a user (UE) in a wireless network. For example, in a 4G (LTE) network, a resource block occupies 180kHz of bandwidth in the frequency domain and has a time domain length of one slot. In 5G (NR), a resource block (RB) contains 12 subcarriers in the frequency domain (similar to LTE), but because there are multiple options for subcarrier spacing (SCS), the bandwidth occupied in the frequency domain depends on different parameter sets (u), thus the number of resource blocks varies within the same bandwidth cell. In this embodiment, the signal transmission module 210 can determine the interference bandwidth of the interference combination based on the frequency band range of the frequency band combination, the number of resource blocks, and the starting resource block.

[0062] The signal transmission module 210 can determine the corresponding delay duration for each interference combination, construct a correspondence between each interference combination and the delay duration, and store it. The storage method of the correspondence is not further limited in this embodiment. The signal transmission module 210 can obtain the interference bandwidth of the current frequency band combination and determine the delay duration corresponding to the current frequency band combination based on the interference bandwidth and the correspondence. For example, if the current frequency band combination is B8+B3 in LTE carrier aggregation mode, the signal transmission module 210 can retrieve the delay duration T corresponding to the interference bandwidth of 35MHz for the B8+B3 combination from the storage unit and provide an anti-interference signal to the adder 231 based on this delay duration T.

[0063] In this embodiment, the signal transmitting module 210 can acquire and store the delay duration corresponding to each interference combination. This delay duration can be stored in the storage unit of the signal transmitting module 210 or in a storage unit independent of the signal transmitting module 210. During the harmonic interference signal elimination process, the signal transmitting module 210 can directly determine the corresponding delay duration based on the interference bandwidth of the current frequency band combination (current interference combination), and send the corresponding anti-interference signal to the harmonic elimination module 230 according to the delay duration. The harmonic interference signal is then eliminated in the harmonic elimination module 230. Compared to related technologies, this does not affect the quality of the first signal and the received signal in different operating modes, nor does it increase the transmission path loss. It can improve the communication quality of the first signal and the received signal in different operating modes, thereby improving the communication performance in carrier aggregation mode, dual-SIM DSDA operating mode, or ENDC operating mode.

[0064] In one embodiment, the signal transmitting module 210 pre-configures and stores a first preset delay duration and a first delay step under different interference combinations. The first preset delay duration can be determined based on the total link length of the harmonic interference signal generated by the transmitting link 310 returning to the harmonic cancellation module 230. This total link length is associated with the receiving link 320 and the transmitting link 310. The total link length is positively correlated with the first preset delay duration; for example, the longer the total link length, the longer the corresponding first preset delay duration. For ease of explanation, an example of a first preset delay duration of 1000ms is used. The first delay step can be determined based on the first preset delay duration. For example, when the first preset delay duration is 1000ms, the first delay step can be set to 100ms.

[0065] Based on the set first preset delay duration and first delay step, the signal transmission module 210 can determine the candidate delay duration within the first preset delay duration. In this embodiment, the candidate delay duration can be understood as the optimal coarse delay value within the first preset delay duration, which is the result of the signal transmission module 210 performing a coarse search within the first preset delay duration.

[0066] Specifically, the signal transmitting module 210 can transmit a third signal to the harmonic cancellation module 230 according to a preset transmission power based on each first delay step, and obtain the reception quality information of the second signal received by the signal receiving module 220. Based on the reception quality information of the second signal received by the signal receiving module 220, a candidate delay duration is determined. The phase of the third signal is opposite to the phase of the harmonic interference signal, and the reception quality information of the second signal corresponding to the candidate delay duration is the highest. For ease of explanation, an example is given with a first preset delay duration of 1000ms and a first delay step of 100ms. Within the first preset delay duration, 10 first delay sub-durations can be set, namely 100ms, 200ms, 300ms, 400ms, 500ms, 600ms, 700ms, 800ms, 900ms, and 1000ms. For each of the 10 first delay sub-durations, the transmitting processor can transmit a third signal to the harmonic cancellation module 230 according to a preset transmission power for each first delay sub-duration, and obtain the reception quality information of the second signal received by the signal receiving module 220. The harmonic cancellation module 230 can perform partial cancellation processing based on the received third signal and the harmonic interference signal received by the receiving link 320, and its signal receiving module 220 can correspondingly obtain the reception quality information of the received signal. The reception quality information may include at least one of Reference Signal Receiving Quality (RSRQ), Reference Signal Receiving Power (RSRP), and Signal to Interference plus Noise Ratio (SINR). In this embodiment, the specific indicators of the reception quality information are not further limited. Based on the reception quality information of the second signal obtained by the signal receiving module 220 for each first delay sub-duration, the first delay sub-duration with the largest reception quality information of the received signal can be used as a candidate delay duration. For example, if the first delay sub-duration with the largest received quality information of the received signal is 600ms, then the candidate delay duration is 600ms.

[0067] Furthermore, the signal transmission module 210 is also configured to determine the delay duration based on a second delay step within a second preset delay duration range centered on the candidate delay duration. It can be understood that the signal transmission module 210 can select a smaller range for scanning based on a coarse search to obtain a more refined delay duration. Here, the first preset delay duration is longer than the second preset delay duration.

[0068] For example, if the candidate delay duration is 600ms, the signal transmission module 210 can determine a second preset delay duration centered at 600ms. For instance, the range of the second preset delay duration could be 650-750ms, 620-780ms, or 670-730ms, etc. The length of the second preset delay duration is less than twice the first delay step. Based on the second preset delay duration, a second delay step can be set, where the first delay step is greater than the second delay step. When the first delay step is 100ms, based on the second preset delay duration, the second delay step can be set to 10ms, 20ms, etc. For ease of explanation, we will take a second preset delay duration range of 650-750ms and a second delay step of 10ms as an example. Within the second preset delay duration, 10 second delay sub-durations can be set, corresponding to 660ms, 670ms, 680ms, 690ms, 700ms, 710ms, 720ms, 730ms, 740ms, and 750ms respectively. For each of these 10 second delay sub-durations, the transmitting processor can transmit a third signal to the harmonic cancellation module 230 according to the preset transmission power, and obtain the reception quality information of the received signal received by the signal receiving module 220. The harmonic cancellation module 230 can perform partial cancellation processing based on the received third signal and the harmonic interference signal received by the receiving link 320, and its signal receiving module 220 can correspondingly obtain the reception quality information of the received signal. Based on the reception quality information of the received signal acquired by the signal receiving module 220 for each second delay sub-duration, the signal transmitting module 210 can use the second delay sub-duration with the largest reception quality information of the received signal as the delay duration (also known as the target delay duration). For example, if the second delay sub-duration corresponding to the maximum reception quality information of the second signal is 720ms, then the corresponding target delay duration is 720ms.

[0069] In this embodiment, during the process of determining the delay duration, a coarse search is first used to obtain candidate delay durations, and then a fine search is used to determine a more precise delay duration based on the coarse search results. This improves both the efficiency and accuracy of delay duration acquisition. Furthermore, the transmitting processor can send an anti-interference signal to the harmonic cancellation module 230 based on the precise delay duration, so that the harmonic interference signal can be canceled in the harmonic cancellation module 230, thereby improving the communication performance in carrier aggregation, dual-SIM DSDA working mode, or ENDC working mode.

[0070] Optionally, in determining the candidate delay duration, in addition to using the method described in the previous embodiment, which involves traversing each delay sub-duration point according to the first delay step within a set first preset delay duration, the present application embodiment can also use the intermediate value method to determine the delay duration. Specifically, for each interference combination, a first-level intermediate delay duration is determined based on the intermediate value of the first preset delay duration; a second-level intermediate delay duration is determined based on the intermediate value between the first-level intermediate delay duration and the maximum and minimum values ​​of the first preset delay duration; the (i+1)th-level intermediate delay duration is determined based on two adjacent intermediate delay durations in the i-th-level intermediate delay duration; where 2≤i≤k, and k is a preset value related to the first preset delay duration; for each level of intermediate delay duration, a third signal is sent to the harmonic cancellation module according to a preset transmission power, and the reception quality information of the second signal received by the signal receiving module is obtained; wherein, the phase of the third signal is the same as the phase of the harmonic interference signal; the delay duration is determined from the multi-level intermediate delay durations based on each reception quality information.

[0071] For ease of explanation, we will take a first preset delay duration of 1000ms as an example. Using the median method, multiple levels of intermediate delay durations can be determined, such as 500ms, 250ms, 750ms, 375ms, 625ms, 125ms, and 875ms. Specifically, for each interference combination, we first determine the two endpoint delay durations (0 and 1000ms) of the first preset delay duration. The first-level intermediate delay duration is determined based on the median value of these two endpoint delay durations. Then, the second-level intermediate delay duration is determined based on the median values ​​of the first-level intermediate delay duration and the maximum and minimum values ​​of the first preset delay duration; for example, second-level intermediate delay durations of 500ms, 250ms, and 750ms can be obtained. Based on this, we can proceed in this manner, determining the (i+1)th level intermediate delay duration based on two adjacent intermediate delay durations in the i-th level intermediate delay duration; where 2 ≤ i ≤ k, and k is a preset value related to the first preset delay duration. The larger k is, the more accurate the obtained delay duration. In this embodiment of the application, the value of k can be determined based on a first preset delay duration.

[0072] For each intermediate delay duration, the reception quality information of the received signal corresponding to the signal receiving module 220 can be obtained, and the intermediate delay duration corresponding to the maximum reception quality information is taken as the delay duration.

[0073] Optionally, in determining the (i+1)th level intermediate delay duration, for the i-th level intermediate delay duration, the reception quality information of the received signal corresponding to the signal received by the signal receiving module 220 can be obtained, and the i-th level target delay duration corresponding to the maximum reception quality information can be determined. Based on the i-th level target delay duration, the (i+1)th level intermediate delay duration is determined, and the delay duration is determined within the (i+1)th level intermediate delay duration. For example, if the second level target delay duration is 750ms, the possibility of its delay duration being 250ms can be ruled out, and the range of its third level intermediate delay duration can be determined to be 500ms-1000ms. Then, with the i-th level target delay duration as the center, the third level intermediate delay duration is determined, for example, 625ms, 750ms, and 875ms. Then, within these three third level intermediate delay durations, the intermediate delay duration with the maximum reception quality information is determined, and this intermediate delay duration is used as the third level target delay duration.

[0074] After determining the third-level target delay duration, the signal transmission module 210 can continue to use the intermediate value method to determine the fourth-level intermediate delay duration, for example, 562.5ms, 625ms, and 687.5ms. Based on this, the delay duration with the maximum received quality information can be determined and referred to as the fourth-level target delay duration. If the fourth-level target delay duration is less than or equal to 625ms, then 687.5ms can be discarded; if the fourth-level target delay duration is greater than or equal to 625ms, then 562.5ms can be discarded. Furthermore, based on the remaining fourth-level intermediate delay durations, the intermediate value method can be used to continue determining the delay duration.

[0075] In this embodiment, the signal transmitting module 210 can determine the delay duration based on a preset first delay duration and an intermediate value method. Compared with the traversal method based on the first / second delay step to determine the candidate delay duration, the determination time of the candidate delay duration can be shortened, the efficiency of determining the candidate delay duration can be improved, and the determination efficiency of the delay duration can be further improved. In this way, the anti-interference signal can be provided to the harmonic elimination module 230 more quickly and accurately, so that the harmonic elimination module 230 can perform harmonic interference signal elimination processing to improve the communication performance in carrier aggregation, dual-card DSDA working mode or ENDC working mode.

[0076] In one embodiment, the signal transmitting module 210 is further configured to: acquire the phase and interference power of the harmonic interference signal, and generate an anti-interference signal based on the phase and interference power of the harmonic interference signal.

[0077] The signal transmitting module 210 can perform phase measurement (Fourier transform or other methods) on the baseband signal of the first signal to obtain the phase PH1 of the first signal. Then, based on the phase PH1 of the first signal and the harmonic interference signal (the nth harmonic of the first signal), the phase PH2 of the harmonic interference signal can be determined. Correspondingly, the signal transmitting module 210 can also obtain the interference power of the harmonic interference signal. The interference power can be the received power of the harmonic interference signal received by the receiving link or demodulator.

[0078] After acquiring the phase and interference power of the harmonic interference signal, the signal transmitting module 210 can generate an anti-interference signal with an opposite phase and equivalent interference power to the harmonic interference signal. The opposite phase can be understood as a 180-degree phase difference between the anti-interference signal and the harmonic interference signal. Equivalent interference power can be understood as the power difference between the interference power and the anti-interference power approaching or equal to 0. When the power difference between the anti-interference power and the anti-interference power approaches 0, the anti-interference signal can perfectly cancel out the harmonic interference signal within the adder 231.

[0079] In this embodiment, the timing of the signal transmitting module 210 generating the anti-interference signal and the timing of sending the anti-interference signal to the harmonic cancellation module 230 can be the same or different. For example, if the timing of the signal transmitting module 210 generating the anti-interference signal is the same as the timing of sending the anti-interference signal to the harmonic cancellation module 230, the signal transmitting module 210 needs to generate and synchronously output the anti-interference signal based on the delay duration, the phase of the harmonic interference signal, and the interference power. If the timing of the signal transmitting module 210 generating the anti-interference signal is different from the timing of sending the anti-interference signal to the harmonic cancellation module 230, the signal transmitting module 210 can first generate the anti-interference signal based on the phase of the harmonic interference signal and the interference power, and then output or provide the anti-interference signal to the harmonic cancellation module 230 based on the delay duration.

[0080] In this embodiment, the signal transmitting module 210 can generate an anti-interference signal based on the phase and interference power of the harmonic interference signal, and provide the anti-interference signal to the adder 231 based on the delay duration. In this way, the phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, and the power difference between the anti-interference power of the anti-interference signal and the interference power of the harmonic interference signal approaches 0 or equal to 0. This allows the harmonic elimination module 230 to perform superposition processing on the synchronously received anti-interference signal and harmonic interference signal to eliminate the harmonic interference signal, thereby improving the communication performance in carrier aggregation, dual-card DSDA working mode or ENDC working mode.

[0081] In one embodiment, the signal transmitting module 210 is further configured to: configure at least one operating mode, determine the interference bandwidth according to the frequency band combination in the operating mode, construct the mapping relationship between each interference combination, the transmitting power, and the interference power, and determine the interference power corresponding to the transmitting power under the current frequency band combination according to the current frequency band combination, the transmitting power, and the mapping relationship.

[0082] The signal transmission module 210 is configured with at least one operating mode. The specific method for determining the interference bandwidth based on the frequency band combination within the operating mode can be found in the aforementioned embodiments and will not be repeated here. The signal transmission module 210 can construct a mapping relationship between the interference bandwidth, transmission power, and interference power for each interference combination. The correspondence between the transmission power and interference power of the interference bandwidth differs under different interference combinations. For example… Figure 5 As shown, the three curves in the figure have different interference bandwidths. For example, curve 1 (Tx10-Tx5) has an interference bandwidth of 5 MHz, curve 2 (Tx10-Tx10) has an interference bandwidth of 10 MHz, and curve 3 (Tx10-Tx20) has an interference bandwidth of 10 MHz. Figure 4 As shown, the harmonic interference signal varies under different interference bandwidths. The transmission power of the first signal and the interference power of the harmonic interference signal exhibit a relatively linear relationship. Based on this, the signal transmission module 210 can obtain the interference bandwidth and current transmission power of the current frequency band combination, and determine the interference power corresponding to the current transmission power under the current frequency band combination based on the pre-stored mapping relationship.

[0083] In this embodiment, the signal transmitting module 210 can acquire and store the mapping relationship between different interference bandwidths, transmission power, and interference power for each interference combination. This mapping relationship can be stored in the storage unit of the signal transmitting module 210 or in a storage unit independent of the signal transmitting module 210. During the harmonic cancellation process, the signal transmitting module 210 can directly determine the interference power of the corresponding harmonic interference signal based on the interference bandwidth of the current frequency band combination, generate a corresponding anti-interference signal based on the interference power, and output it to the harmonic cancellation module 230 based on the delay duration. In the harmonic cancellation module 230, the harmonic interference signal is eliminated based on the anti-interference signal, thereby improving the communication quality of the first signal and the received signal under different operating modes.

[0084] In one embodiment, the signal transmitting module 210 is further configured to: determine the linear relationship between the transmitting power and the interference power based on each transmitting power and the corresponding interference power for the interference bandwidth of each interference combination, and determine the interference power of the harmonic interference signal based on the current frequency band combination, the linear relationship and the current transmitting power of the current first signal.

[0085] For each interference combination, the interference bandwidth can be scanned across a transmit power range from -8dB to +23dB to obtain the corresponding harmonic interference signal's interference power. Generally, harmonic interference signals have higher interference power in high-power and ET power supply modes. In the embodiment of the application, to simplify the storage of the signal transmitting module 210, the interference power of the harmonic interference signal when the transmit power of the first signal is 20dBm is used as the initial value, and the interference power of the harmonic interference signal when the transmit power is greater than 20dBm is calculated as the candidate value. Based on the initial and candidate values, the slope values ​​of the transmit power and interference power are determined, thereby obtaining a linear relationship between the transmit power and interference power.

[0086] It should be noted that if the harmonic interference signal is the second harmonic of the first signal, the interference power of the second harmonic interference signal at a transmit power of 20dBm is detected and used as its initial value; further, the interference power of the second harmonic interference signal at a transmit power greater than 20dBm (e.g., 22dBm) is detected and used as its candidate value, and the slope values ​​of the transmit power and interference power are determined based on the initial value and the candidate value. Correspondingly, if the harmonic interference signal is the third harmonic of the first signal, the interference power of the third harmonic interference signal at a transmit power of 20dBm is detected and used as its initial value; further, the interference power of the third harmonic interference signal at a transmit power greater than 20dBm (e.g., 22dBm) is detected and used as its candidate value, and the slope values ​​of the transmit power and interference power are determined based on the initial value and the candidate value.

[0087] The signal transmission module 210 can store the relationship between each interference bandwidth and linear relationship of the interference combination. Based on this, the signal transmission module 210 can determine the interference power corresponding to the current transmission power based on the interference bandwidth of the current frequency band combination and the transmission power of the current first signal, according to the corresponding stored linear relationship.

[0088] In this embodiment, the signal transmitting module 210 can obtain the linear relationship between the transmitting power and the interference power based on the specific transmitting power and interference power under different interference bandwidths for each interference combination, and determine the interference power corresponding to the current transmitting power based on the linear relationship. This can improve the efficiency of interference power determination and reduce the storage amount of the signal transmitting module 210 for the correspondence between multiple transmitting powers and multiple interference powers. During the harmonic interference signal cancellation process, the signal transmitting module 210 can directly determine the interference power of the corresponding harmonic interference signal based on the interference bandwidth of the current frequency band combination, the current transmitting power, and the linear relationship, and generate a corresponding anti-interference signal according to the interference power. This anti-interference signal is then output to the harmonic cancellation module 230 based on the delay duration. In the harmonic cancellation module 230, the harmonic interference signal is canceled based on the anti-interference signal, thereby improving the communication quality of the first signal and the received signal under different operating modes.

[0089] Please continue to refer to this. Figure 2 This application also provides a communication device. The communication device can be, but is not limited to, various personal computers, laptops, smartphones, tablets, IoT devices, portable wearable devices, and Customer Premise Equipment (CPE). IoT devices can include smart speakers, smart TVs, smart air conditioners, smart in-vehicle devices, etc. Portable wearable devices can include smartwatches, smart bracelets, head-mounted devices, etc.

[0090] The communication device provided in this application embodiment may include the radio frequency transceiver circuit 20, the transmit link 310, and the receive link 320 as described in any of the foregoing embodiments. The transmit link 310, connected to the radio frequency transceiver circuit 20, is used to amplify the power of the first signal and transmit it to the antenna ANT1. The receive link 320, connected to the radio frequency transceiver circuit 20, is used to receive the second signal from the antenna ANT1 and output it to the radio frequency transceiver circuit 20.

[0091] The transmit link 310 may include a power amplifier for amplifying the power of a first signal. The receive link 320 may include a low-noise amplifier for amplifying the second signal. In this embodiment, the transmit link 310 and the receive link may be integrated into the same RF transceiver. Optionally, the transmit link 310 and the receive link may be independently integrated into different RF devices. For example, the transmit link 310 may be integrated into a multimode power amplifier, and the receive link 320 may be integrated into an ELNA device. Optionally, the transmit link 310 may also include a first filter connected to the output of the power amplifier, which may be used to filter the amplified first signal. The receive link 320 may also include a second filter connected to the input of the low-noise amplifier, which may be used to filter the second signal from antenna ANT1.

[0092] In this embodiment, the communication device includes a radio frequency transceiver circuit, a transmit link, and a receive link. The radio frequency transceiver circuit includes a signal transmitting module, a signal receiving module, and a harmonic cancellation module. The harmonic cancellation module is connected to the signal transmitting module and the signal receiving module, respectively. The signal transmitting module can be used to transmit a first signal, and the signal receiving module can be used to receive a second signal from the antenna via the harmonic cancellation module. The second signal transmitted to the harmonic cancellation module includes harmonic interference signals leaked from the transmit link of the first signal to the receive link of the second signal. In addition, the signal transmitting module can also obtain the delay time of the harmonic interference signal leaking to the harmonic cancellation module relative to the transmission of the first signal, and output an anti-interference signal to the harmonic cancellation module according to the delay time, so that the anti-interference signal and the harmonic interference signal are superimposed in the harmonic cancellation module to eliminate the harmonic interference signal. Since the phase of the anti-interference signal is opposite to that of the harmonic interference signal, and the anti-interference power and interference power of the anti-interference signal are within a preset range, the anti-interference signal can completely cancel the harmonic interference signal leaked from the transmission link to the receiving link within the harmonic elimination module, thereby achieving the effect of eliminating harmonic interference. Compared with related technologies, it will not affect the quality of the first signal and the received signal in carrier aggregation combination, dual-card DSDA combination or ENDC combination, nor will it increase the transmission path loss, thereby improving the communication performance of various combinations such as carrier aggregation, dual-card DSDA or ENDC.

[0093] like Figure 5As shown, in one embodiment, in addition to including a transmit link 310 supporting a first signal and a receive link 320 supporting a second signal, the communication device also includes a sub-transmit link 330 supporting the second signal and a sub-receive link 340 supporting the first signal. It is understood that the communication device includes a transmit link 310 supporting the first signal and a sub-transmit link 330 supporting the second signal, as well as a receive link 320 supporting the second signal and a sub-receive link 340 supporting the first signal.

[0094] Specifically, sub-transmit link 330, connected to RF transceiver circuit 20, is used to amplify the power of the first signal. Sub-receive link 340, connected to RF transceiver circuit 20, is used to receive the first signal from antenna ANT1. Specifically, sub-transmit link 330 may include a power amplifier 331 for amplifying the power of the first signal. Sub-receive link 340 may include a low-noise amplifier for amplifying the first signal from antenna ANT1 with low noise.

[0095] Furthermore, the communication equipment may also include a first duplexer 350, a second duplexer 360, and a combiner 370. The first duplexer 350 is connected to both the transmit link 310 and the sub-receive link 340, and can perform filtering and power division processing on the first signals on both the transmit link 310 and the sub-receive link 340. The second duplexer 360 is connected to both the sub-transmit link 330 and the receive link 320, and its first duplexer 350 can perform filtering on the second signals on both the sub-transmit link 330 and the receive link 320. Specifically, the first duplexer 350 and the second duplexer 360 each have three terminals: TX, RX, and ANT, which can be used to filter out spurious interference on the sub-transmit / transmit link and the sub-receive / receive link, respectively. The combiner 370 is connected to the first duplexer 350, the second duplexer 360, and the antenna ANT1. The combiner 370 can combine the first signal from the transmit link 310 and the second signal from the sub-RF link and output them to free space via the antenna ANT1. It can also filter and split the signal from the antenna ANT1 to the receive link 320 and the sub-receive link 340.

[0096] The communication device in this embodiment supports the transmission and reception processing of the first signal and the received signal, and realizes carrier aggregation processing of the first signal and the received signal. Furthermore, since the communication device includes the radio frequency transceiver circuit of any of the aforementioned embodiments, it can obtain the delay time of the harmonic interference signal leaking to the harmonic cancellation module relative to the transmission of the first signal, and output an anti-interference signal to the harmonic cancellation module according to the delay time, so that the anti-interference signal and the harmonic interference signal are superimposed in the harmonic cancellation module, thereby eliminating the harmonic interference signal. Since the phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, and the anti-interference power of the anti-interference signal is within a preset range of the interference power, within the harmonic cancellation module, the anti-interference signal can completely cancel the harmonic interference signal leaked from the transmission link to the reception link, thus achieving the effect of eliminating harmonic interference. Compared with related technologies, it does not affect the quality of the first signal and the received signal in the carrier aggregation combination, dual-SIM DSDA combination, or ENDC combination, nor does it increase the transmission path loss, thereby improving the communication performance of various combinations such as carrier aggregation, dual-SIM DSDA, or ENDC.

[0097] For ease of explanation, Figure 5 The communication device shown is used as an example for illustration. The communication device in this embodiment can support the transmission and reception processing of B8 and B3, and realize carrier aggregation processing of B8 and B3. Furthermore, since the communication device includes the radio frequency transceiver circuit in any of the aforementioned embodiments, it can obtain the delay time of the B8 second harmonic interference signal leaking to the adder relative to the B8 output, and output an anti-interference signal (TX_BB: 1760M-1830M) to the adder according to the delay time, so that the anti-interference signal and the B8 second harmonic interference signal (1760M-1830M) are superimposed in the adder to eliminate the B8 second harmonic interference signal in the B3 receiving link. Since the phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, and the anti-interference power and interference power of the anti-interference signal are within a preset range, the anti-interference signal can completely cancel the B8 second harmonic interference signal leaked from the B8 transmit link to the B3 receive link within the adder, thereby achieving the effect of eliminating harmonic interference. Compared with related technologies, it will not affect the transmission and reception quality of B8 and B3 during carrier aggregation, nor will it increase the loss of the B8 transmit path, thus improving the communication performance of carrier aggregation.

[0098] The wireless communication method provided in this application embodiment can be applied to the signal transmitting module in any of the foregoing embodiments. The signal transmitting module is used to transmit a first signal. For example... Figure 6 As shown in the embodiments of this application, the wireless communication method may include steps 602-606.

[0099] Step 602: Obtain the second signal transmitted to the harmonic cancellation module.

[0100] The second signal includes the received signal from antenna ANT1 and the harmonic interference signal leaked from the transmit link of the first signal to the receive link of the second signal. If the second signal includes the harmonic interference signal leaked from the first signal on transmit link 310 to receive link 320, then the frequency ranges of the harmonic signals of the first signal and the received signal overlap. It can be understood that the combination of the first signal and the received signal includes, but is not limited to, LTE CA interference combinations, NR CA interference combinations, dual-SIM DSDA interference combinations, and ENDC interference combinations. LTE CA interference combinations include, but are not limited to, B8+B41 (third harmonic interference), B8+B7 (second harmonic interference), and B8+B3 (second harmonic interference) combinations. For example, when B8+B3 CA is working, B8 acts as the primary carrier component (PCC), and the second harmonic of B8 will severely interfere with B3 RX, etc. NR CA interference combinations include, but are not limited to, N8+N41 (third harmonic interference). Dual-SIM DSDA interference combinations include, but are not limited to, LTE+LTE (e.g., B8+B41), LTE+NR (e.g., B8+N41), and NR+NR (e.g., N8+N41). ENDC interference combinations include, but are not limited to, B3+N78.

[0101] Step 604: Obtain the delay duration.

[0102] The delay duration can be understood as the time between the moment when the harmonic interference signal leaks to the harmonic elimination module and the moment when the signal transmission module sends the first signal.

[0103] Step 606: Generate an anti-interference signal based on the interference power and phase of the harmonic interference signal.

[0104] The phase of the anti-interference signal is opposite to that of the harmonic interference signal, and the anti-interference power of the anti-interference signal and the interference power of the harmonic interference signal are within a preset range.

[0105] Step 608: Output an anti-interference signal to the harmonic elimination module according to the delay duration, so that the anti-interference signal and harmonic interference signal are superimposed in the harmonic elimination module to eliminate the harmonic interference signal.

[0106] The signal transmitting module can obtain the delay time of the harmonic interference signal leaking to the harmonic elimination module relative to the output of the first signal of the signal transmitting module, and send an anti-interference signal to the harmonic elimination module according to the delay time. In this way, the harmonic elimination module can receive the anti-interference signal and the harmonic interference signal at the same time point.

[0107] The wireless communication method in this embodiment can acquire the received signal from the antenna transmitted to the harmonic cancellation module and the harmonic interference signal leaked from the transmission link of the first signal to the reception link of the second signal, as well as the delay between the time when the harmonic interference signal leaks to the harmonic cancellation module and the time when the signal transmission module sends the first signal. Based on the delay, an anti-interference signal is output to the harmonic cancellation module so that the anti-interference signal and the harmonic interference signal are superimposed in the harmonic cancellation module, thereby eliminating the harmonic interference signal. Since the phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, and the anti-interference power and interference power of the anti-interference signal are within a preset range, the harmonic interference signal can completely cancel the harmonic interference signal within the harmonic cancellation module, thus achieving the effect of eliminating harmonic interference. Compared with related technologies, it does not affect the quality of the first signal and the received signal in carrier aggregation combinations, dual-SIM DSDA combinations, or ENDC combinations, nor does it increase the transmission path loss, thereby improving the communication performance of various combinations such as carrier aggregation, dual-SIM DSDA, or ENDC.

[0108] like Figure 7 As shown, in one embodiment, obtaining the delay time of the harmonic interference signal leaking to the harmonic cancellation module 230 relative to the first signal emission includes steps 702-708.

[0109] Step 702: Configure at least one working mode.

[0110] The operating mode can be LTE carrier aggregation mode, NR carrier aggregation mode, dual-SIM DSDA mode, or ENDC mode. The signal transmission module 210 can be configured with at least one of LTE carrier aggregation mode, NR carrier aggregation mode, dual-SIM DSDA mode, and ENDC mode.

[0111] Step 704: Determine the interference bandwidth of the interference combination based on the frequency band combination in the operating mode.

[0112] The signal transmission module can determine the interference bandwidth based on the frequency band combinations included in the configured operating mode. In this embodiment, a frequency band combination with interference bandwidth can be referred to as an interference combination. The signal transmission module can configure the number of resource blocks and the starting resource block based on the frequency band combination. A resource block is the smallest unit of radio resources that can be allocated to a user (UE) in a wireless network. For example, in a 4G (LTE) network, a resource block occupies 180kHz of bandwidth in the frequency domain and has a time domain length of one slot. In 5G (NR), a resource block (RB) contains 12 subcarriers in the frequency domain (similar to LTE), but because there are multiple options for subcarrier spacing (SCS), the bandwidth occupied in the frequency domain depends on different parameter sets (u), thus the number of resource blocks varies within the same bandwidth cell. In this embodiment, the signal transmission module can determine the interference bandwidth of the interference combination based on the frequency band range of the frequency band combination, the number of resource blocks, and the starting resource block.

[0113] Step 706: Construct the correspondence between the interference bandwidth and delay duration for each interference combination.

[0114] The signal transmission module can determine the corresponding delay duration for each interference combination, construct the correspondence between each interference combination and the delay duration, and store it. The method of storing the correspondence is not further limited in this embodiment.

[0115] Step 708: Determine the delay duration corresponding to the current frequency band combination based on the current frequency band combination and the corresponding relationship.

[0116] For example, if the current frequency band combination is the B8+B3 combination in the LTE carrier aggregation mode, the signal transmission module 210 can call the delay time T corresponding to the interference bandwidth of 35MHz of the B8+B3 combination from the storage unit, and provide an anti-interference signal to the adder 231 based on the delay time T.

[0117] In this embodiment, the signal transmitting module can acquire and store the delay duration corresponding to each interference combination. This delay duration can be stored in the signal transmitting module's storage unit or in a storage unit independent of the signal transmitting module. During the harmonic interference signal cancellation process, the signal transmitting module can directly determine the corresponding delay duration based on the interference bandwidth of the current frequency band combination (current interference combination), and send the corresponding anti-interference signal to the harmonic cancellation module according to this delay duration. The harmonic interference signal is then eliminated in the harmonic cancellation module. Compared to related technologies, this does not affect the quality of the first signal and the received signal in different operating modes, nor does it increase the transmission path loss. It can improve the communication quality of the first signal and the received signal in different operating modes, thereby improving the communication performance in carrier aggregation mode, dual-SIM DSDA mode, or ENDC mode.

[0118] like Figure 8 As shown, in one embodiment, before step 706, which establishes the correspondence between the interference bandwidth and delay duration of each interference combination, the wireless communication method further includes step 705: for the interference bandwidth of each interference combination, a candidate delay duration is determined within a first preset delay duration based on a first delay step; and within a second preset delay duration centered on the candidate delay duration, a delay duration is determined based on a second delay step. Wherein, the first delay step is greater than the second delay step, and the first preset delay duration is greater than the second preset delay duration.

[0119] The signal transmission module pre-configures and stores a first preset delay duration and a first delay step under different interference combinations. The first preset delay duration is determined based on the total link length from the harmonic interference signal generated by the transmission link back to the harmonic cancellation module. The total link length is positively correlated with the first preset delay duration. Based on the set first preset delay duration and first delay step, the signal transmission module can determine candidate delay durations within the first preset delay duration. In this embodiment, the candidate delay duration can be understood as the optimal coarse delay value within the first preset delay duration, which is the result of a coarse search performed by the signal transmission module within the first preset delay duration. Furthermore, based on the coarse search, the signal transmission module can select a smaller range for scanning to obtain a more refined target delay duration, i.e., the delay duration.

[0120] In this embodiment, during the process of determining the delay duration, a coarse search is first used to obtain candidate delay durations, and then a fine search is used to determine a more refined target delay duration, i.e., the delay duration, based on the coarse search results. This improves both the efficiency and accuracy of delay duration acquisition. Furthermore, the transmitting processor can send an anti-interference signal to the harmonic cancellation module based on the precise delay duration to cancel harmonic interference signals, thereby improving communication performance in carrier aggregation, dual-SIM DSDA, or ENDC modes.

[0121] In one embodiment, determining the candidate delay duration within a first preset delay duration based on a first delay step for the interference bandwidth of each interference combination may specifically include the step of determining the candidate delay duration within a first preset delay duration using an intermediate value method for each interference combination. Specifically, for each interference combination, a first-level intermediate delay duration is determined based on the intermediate value of the first preset delay duration; a second-level intermediate delay duration is determined based on the intermediate value between the first-level intermediate delay duration and the maximum and minimum values ​​of the first preset delay duration; an (i+1)th-level intermediate delay duration is determined based on two adjacent intermediate delay durations in the i-th-level intermediate delay duration; where 2≤i≤k, and k is a preset value related to the first preset delay duration; for each level of intermediate delay duration, a third signal is transmitted to the harmonic cancellation module according to a preset transmission power, and the reception quality information of the second signal received by the signal receiving module is obtained; wherein the phase of the third signal is the same as the phase of the harmonic interference signal; and the delay duration is determined from the multi-level intermediate delay durations based on each reception quality information.

[0122] For ease of explanation, we will take a first preset delay duration of 1000ms as an example. Using the median method, multiple levels of intermediate delay durations can be determined, such as 500ms, 250ms, 750ms, 375ms, 625ms, 125ms, and 875ms. Specifically, for each interference combination, we first determine the two endpoint delay durations (0 and 1000ms) of the first preset delay duration. The first-level intermediate delay duration is determined based on the median value of these two endpoint delay durations. Then, the second-level intermediate delay duration is determined based on the median values ​​of the first-level intermediate delay duration and the maximum and minimum values ​​of the first preset delay duration; for example, second-level intermediate delay durations of 500ms, 250ms, and 750ms can be obtained. Based on this, we can proceed in this manner, determining the (i+1)th level intermediate delay duration based on two adjacent intermediate delay durations in the i-th level intermediate delay duration; where 2 ≤ i ≤ k, and k is a preset value related to the first preset delay duration. The larger k is, the more accurate the obtained delay duration. In this embodiment of the application, the value of k can be determined based on a first preset delay duration.

[0123] For each intermediate delay duration, the reception quality information of the received signal corresponding to the signal receiving module 220 can be obtained, and the intermediate delay duration corresponding to the maximum reception quality information is taken as the delay duration.

[0124] Optionally, in determining the (i+1)th level intermediate delay duration, for the i-th level intermediate delay duration, the reception quality information of the received signal corresponding to the signal received by the signal receiving module 220 can be obtained, and the i-th level target delay duration corresponding to the maximum reception quality information can be determined. Based on the i-th level target delay duration, the (i+1)th level intermediate delay duration is determined, and the delay duration is determined within the (i+1)th level intermediate delay duration. For example, if the second level target delay duration is 750ms, the possibility of its delay duration being 250ms can be ruled out, and the range of its third level intermediate delay duration can be determined to be 500ms-1000ms. Then, with the i-th level target delay duration as the center, the third level intermediate delay duration is determined, for example, 625ms, 750ms, and 875ms. Then, within these three third level intermediate delay durations, the intermediate delay duration with the maximum reception quality information is determined, and this intermediate delay duration is used as the third level target delay duration.

[0125] After determining the third-level target delay duration, the signal transmission module 210 can continue to use the intermediate value method to determine the fourth-level intermediate delay duration, for example, 562.5ms, 625ms, and 687.5ms. Based on this, the delay duration with the maximum received quality information can be determined and referred to as the fourth-level target delay duration. If the fourth-level target delay duration is less than or equal to 625ms, then 687.5ms can be discarded; if the fourth-level target delay duration is greater than or equal to 625ms, then 562.5ms can be discarded. Furthermore, based on the remaining fourth-level intermediate delay durations, the intermediate value method can be used to continue determining the delay duration.

[0126] In this embodiment, the signal transmission module can determine the candidate delay duration or delay duration based on a preset first delay duration and an intermediate value method. Compared with the traversal method based on the first / second delay step to determine the candidate delay duration, the determination time of the candidate delay duration can be shortened, the efficiency of determining the candidate delay duration can be improved, and the efficiency of determining the delay duration can be further improved. In this way, the anti-interference signal can be provided to the harmonic elimination module more quickly and accurately, so that the harmonic elimination module can perform harmonic interference signal elimination processing to improve the communication performance in carrier aggregation, dual-card DSDA working mode or ENDC working mode.

[0127] like Figure 9 As shown, in one embodiment, obtaining the interference power of the harmonic interference signal includes steps 902-908.

[0128] Step 902: Configure at least one working mode.

[0129] Step 904: Determine the interference bandwidth of the interference combination based on the frequency band combination in the operating mode.

[0130] Step 906: Construct the mapping relationship between the interference bandwidth, transmit power, and interference power for each interference combination. The correspondence between transmit power and interference power differs for different interference bandwidths under different interference combinations.

[0131] Step 908: Determine the interference power corresponding to the current transmit power under the current frequency band combination based on the interference bandwidth, current transmit power, and mapping relationship of the current frequency band combination.

[0132] Harmonic interference signals vary under different interference bandwidths. The transmission power of the first signal and the interference power of the harmonic interference signal exhibit a relatively linear relationship. Based on this, the signal transmission module can obtain the interference bandwidth and current transmission power of the current frequency band combination, and determine the interference power corresponding to the current transmission power under the current frequency band combination based on the pre-stored mapping relationship.

[0133] In this embodiment, the signal transmitting module can acquire and store the mapping relationship between different interference bandwidths, transmit power, and interference power for each interference combination. This mapping relationship can be stored in the signal transmitting module's storage unit or in a storage unit independent of the signal transmitting module. During the harmonic interference signal cancellation process, the signal transmitting module can directly determine the interference power of the corresponding harmonic interference signal based on the interference bandwidth of the current frequency band combination, generate a corresponding anti-interference signal based on the interference power, and output it to the harmonic cancellation module based on the delay duration. In the harmonic cancellation module, the harmonic interference signal is eliminated based on the anti-interference signal, thereby improving the communication quality of the first signal and the received signal under different operating modes.

[0134] like Figure 11 As shown, in one embodiment, before step 906, which constructs the mapping relationship between the interference bandwidth, transmission power, and interference power of each interference combination, the wireless communication method further includes step 905, which, for each interference combination, determines the linear relationship between the transmission power and the interference power based on each transmission power and the corresponding interference power, and determines the interference power of the harmonic interference signal based on the current frequency band combination, the linear relationship, and the current transmission power of the current first signal.

[0135] For each interference combination, the interference bandwidth can be scanned across a transmit power range from -8dB to +23dB to obtain the corresponding harmonic interference signal's interference power. Generally, harmonic interference signals have higher interference power in high-power and ET power supply modes. In the embodiment of the application, to simplify the storage of the signal transmitting module 210, the interference power of the harmonic interference signal when the transmit power of the first signal is 20dBm is used as the initial value, and the interference power of the harmonic interference signal when the transmit power is greater than 20dBm is calculated as the candidate value. Based on the initial and candidate values, the slope values ​​of the transmit power and interference power are determined, thereby obtaining a linear relationship between the transmit power and interference power.

[0136] In this embodiment, the signal transmitting module can obtain the linear relationship between the transmitting power and the interference power based on the specific transmitting power and interference power under different interference bandwidths for each interference combination, and determine the interference power corresponding to the current transmitting power based on the linear relationship. This can improve the efficiency of interference power determination and reduce the storage amount of the signal transmitting module for the correspondence between multiple transmitting powers and multiple interference powers. During the harmonic interference signal cancellation process, the signal transmitting module can directly determine the interference power of the corresponding harmonic interference signal based on the interference bandwidth of the current frequency band combination, the current transmitting power, and the linear relationship, and generate a corresponding anti-interference signal based on the interference power. This anti-interference signal is then output to the harmonic cancellation module based on the delay duration. In the harmonic cancellation module, the harmonic interference signal is eliminated based on the anti-interference signal, thereby improving the communication quality of the first signal and the received signal under different operating modes.

[0137] In one embodiment, a communication device is provided, which may be a terminal, such as a mobile phone, and its internal structure diagram may be as follows. Figure 11 As shown, the communication device includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface and input device are also connected to the system bus via the input / output interface. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The input / output interface is used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements a wireless communication method.

[0138] Those skilled in the art will understand that Figure 11 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the communication device to which the present application is applied. Specific communication devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0139] In one embodiment, a communication device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0140] Acquire the second signal transmitted to the harmonic cancellation module; wherein the second signal includes the received signal from the antenna and the harmonic interference signal leaked from the transmission link of the first signal to the reception link of the second signal;

[0141] Obtain the delay duration; where the delay duration is the time between the moment when the harmonic interference signal leaks to the harmonic cancellation module and the moment when the signal transmission module sends the first signal;

[0142] An anti-interference signal is generated based on the interference power and phase of the harmonic interference signal, wherein the phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, and the anti-interference power of the anti-interference signal is within a preset range from the interference power.

[0143] The anti-interference signal is output to the harmonic cancellation module according to the delay time, so that the anti-interference signal and harmonic interference signal cancel each other in the harmonic cancellation module.

[0144] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0145] Acquire the second signal transmitted to the harmonic cancellation module; wherein the second signal includes the received signal from the antenna and the harmonic interference signal leaked from the transmission link of the first signal to the reception link of the second signal;

[0146] Obtain the delay duration; where the delay duration is the time between the moment when the harmonic interference signal leaks to the harmonic cancellation module and the moment when the signal transmission module sends the first signal;

[0147] An anti-interference signal is generated based on the interference power and phase of the harmonic interference signal, wherein the phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, and the anti-interference power of the anti-interference signal is within a preset range from the interference power.

[0148] The anti-interference signal is output to the harmonic cancellation module according to the delay time, so that the anti-interference signal and harmonic interference signal cancel each other in the harmonic cancellation module.

[0149] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0150] Acquire the second signal transmitted to the harmonic cancellation module; wherein the second signal includes the received signal from the antenna and the harmonic interference signal leaked from the transmission link of the first signal to the reception link of the second signal;

[0151] Obtain the delay duration; where the delay duration is the time between the moment when the harmonic interference signal leaks to the harmonic cancellation module and the moment when the signal transmission module sends the first signal;

[0152] An anti-interference signal is generated based on the interference power and phase of the harmonic interference signal, wherein the phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, and the anti-interference power of the anti-interference signal is within a preset range from the interference power.

[0153] The anti-interference signal is output to the harmonic cancellation module according to the delay time, so that the anti-interference signal and harmonic interference signal cancel each other in the harmonic cancellation module.

[0154] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0155] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0156] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A radio frequency transceiver circuit, characterized in that, include: The system includes a signal transmitting module, a signal receiving module, and a harmonic cancellation module, wherein the harmonic cancellation module is electrically connected to both the signal transmitting module and the signal receiving module; wherein... The signal transmitting module is configured to transmit a first signal; The signal receiving module is configured to receive a second signal via the harmonic cancellation module, wherein the second signal transmitted to the harmonic cancellation module includes a received signal from the antenna and a harmonic interference signal leaked from the transmission link of the first signal to the receiving link of the second signal; The signal transmitting module is further configured to: acquire a delay duration and output an anti-interference signal to the harmonic cancellation module according to the delay duration, so that the anti-interference signal and the harmonic interference signal cancel each other out in the harmonic cancellation module; wherein, the delay duration is the time length between the moment when the harmonic interference signal leaks to the harmonic cancellation module and the moment when the signal transmitting module sends the first signal; the phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, and the anti-interference power of the anti-interference signal and the interference power of the harmonic interference signal are within a preset range.

2. The radio frequency transceiver circuit according to claim 1, characterized in that, The harmonic elimination module is an adder, in which the anti-interference signal and the harmonic interference signal are superimposed to eliminate the harmonic interference signal.

3. The radio frequency transceiver circuit according to claim 1, characterized in that, The signal transmitting module is also configured to: Configure at least one working mode; The interference bandwidth of the interference combination is determined based on the frequency band combination in the operating mode; Construct the correspondence between the interference bandwidth and the delay duration of each interference combination; wherein, the interference combination is a frequency band combination that contains the interference bandwidth; The delay duration corresponding to the current frequency band combination is determined based on the current frequency band combination and the corresponding relationship.

4. The radio frequency transceiver circuit according to claim 3, characterized in that, The signal transmitting module is also configured to: For each interference combination, the interference bandwidth is determined within a first preset delay duration based on the first delay step. Within a second preset delay duration centered on the candidate delay duration, the delay duration is determined according to a second delay step; wherein the first delay step is greater than the second delay step, and the first preset delay duration is greater than the second preset delay duration.

5. The radio frequency transceiver circuit according to claim 4, characterized in that, The signal transmitting module is also configured to: Based on the first delay step, a plurality of first delay sub-durations are determined within a first preset delay duration; For each of the first delay sub-durations, a third signal is transmitted to the harmonic cancellation module according to a preset transmission power, and the reception quality information of the received signal received by the signal receiving module is obtained; wherein, the phase of the third signal is the same as the phase of the harmonic interference signal; The candidate delay duration is determined from a plurality of first delay sub-durations based on the received quality information.

6. The radio frequency transceiver circuit according to claim 4, characterized in that, The signal transmitting module is also configured to: For each of the aforementioned interference combinations, a first-level intermediate delay duration is determined based on the median value of the first preset delay duration. The second-level intermediate delay duration is determined based on the midpoint between the maximum and minimum values ​​of the first-level intermediate delay duration and the first preset delay duration. The intermediate delay duration of level i+1 is determined based on two adjacent intermediate delay durations in the intermediate delay duration of level i; where 2≤i≤k, and k is a preset value related to the first preset delay duration. For each stage's intermediate delay duration, a third signal is transmitted to the harmonic cancellation module according to a preset transmission power, and the reception quality information of the second signal received by the signal receiving module is obtained; wherein, the phase of the third signal is the same as the phase of the harmonic interference signal; The delay duration is determined from the intermediate delay durations of the multiple levels based on the received quality information.

7. The radio frequency transceiver circuit according to claim 1, characterized in that, The signal transmitting module is also configured to: Obtain the phase and interference power of the harmonic interference signal; The anti-interference signal is generated based on the phase and interference power of the harmonic interference signal.

8. The radio frequency transceiver circuit according to claim 7, characterized in that, The signal transmitting module is further configured to: Configure at least one working mode; The interference bandwidth of the interference combination is determined based on the frequency band combination in the operating mode; Construct a mapping relationship between the interference bandwidth, transmit power, and interference power of each interference combination; wherein, the interference combination is a frequency band combination that contains the interference bandwidth; The interference power corresponding to the current transmit power under the current frequency band combination is determined based on the interference bandwidth of the current frequency band combination, the current transmit power, and the mapping relationship.

9. The radio frequency transceiver circuit according to claim 8, characterized in that, The signal transmitting module is further configured to: The linear relationship between the transmission power and the interference power is determined based on each of the aforementioned transmission powers and the corresponding interference power; The interference power of the harmonic interference signal is determined based on the current frequency band combination, the linear relationship, and the current transmit power of the first signal.

10. The radio frequency transceiver circuit according to claim 1, characterized in that, The radio frequency transceiver circuit also includes: A modulation circuit, wherein the input terminal of the modulation circuit is connected to the signal transmitting module, and the output terminal of the modulation circuit is connected to the transmitting link, and the modulation circuit is used to modulate the first signal and then output it to the transmitting link; A demodulation circuit is provided, the input of which is connected to the receiving link, and the output of which is connected to the harmonic cancellation module. The demodulation circuit is used to demodulate the second signal and then output it to the signal receiving module.

11. A wireless communication method, characterized in that, Applied to a signal transmitting module, the signal transmitting module being used to transmit a first signal, wherein the method includes: Acquire a second signal transmitted to the harmonic cancellation module; wherein the second signal includes a received signal from the antenna and a harmonic interference signal leaked from the transmission link of the first signal to the reception link of the second signal; Obtain the delay duration; wherein, the delay duration is the time length between the moment when the harmonic interference signal leaks to the harmonic cancellation module and the moment when the signal transmission module sends the first signal; An anti-interference signal is generated based on the interference power and phase of the harmonic interference signal, wherein the phase of the anti-interference signal is opposite to the phase of the harmonic interference signal, and the anti-interference power of the anti-interference signal is within a preset range from the interference power. An anti-interference signal is output to the harmonic cancellation module according to the delay duration, so that the anti-interference signal and the harmonic interference signal cancel each other out in the harmonic cancellation module.

12. The method according to claim 11, characterized in that, The acquisition of the delay duration includes: Configure at least one working mode; The interference bandwidth of the interference combination is determined based on the frequency band combination in the operating mode; Construct the correspondence between the interference bandwidth and the delay duration of each interference combination; wherein, the interference combination is a frequency band combination that contains the interference bandwidth; The delay duration corresponding to the current frequency band combination is determined based on the current frequency band combination and the corresponding relationship.

13. The method according to claim 12, characterized in that, Before constructing the correspondence between the interference bandwidth and delay duration of each interference combination, the method includes: For each interference combination, the interference bandwidth is determined within a first preset delay duration based on the first delay step. Within a second preset delay duration centered on the candidate delay duration, the delay duration is determined according to a second delay step; wherein the first delay step is greater than the second delay step, and the first preset delay duration is greater than the second preset delay duration.

14. The method according to claim 13, characterized in that, The interference bandwidth for each interference combination, determining the candidate delay duration based on the first delay step within a first preset delay duration, includes: For each of the aforementioned interference combinations, a first-level intermediate delay duration is determined based on the median value of the first preset delay duration. The second-level intermediate delay duration is determined based on the midpoint between the maximum and minimum values ​​of the first-level intermediate delay duration and the first preset delay duration. The intermediate delay duration of level i+1 is determined based on two adjacent intermediate delay durations in the intermediate delay duration of level i; where 2≤i≤k, and k is a preset value related to the first preset delay duration. For each stage of intermediate delay, a third signal is sent to the harmonic cancellation module according to a preset transmission power, and the reception quality information of the second signal received by the signal receiving module is obtained; wherein, the phase of the third signal is the same as the phase of the harmonic interference signal; The delay duration is determined from the intermediate delay durations of the multiple levels based on the received quality information.

15. The method according to claim 11, characterized in that, The method further includes: Obtain the phase and interference power of the harmonic interference signal; The anti-interference signal is generated based on the phase and interference power of the harmonic interference signal.

16. The method according to claim 15, characterized in that, Obtaining the interference power of the harmonic interference signal includes: Configure at least one working mode; The interference bandwidth of the interference combination is determined based on the frequency band combination in the operating mode; Construct a mapping relationship between the interference bandwidth, transmit power, and interference power of each interference combination; wherein, the interference combination is a frequency band combination that contains the interference bandwidth; The interference power corresponding to the current transmit power under the current frequency band combination is determined based on the interference bandwidth of the current frequency band combination, the current transmit power, and the mapping relationship.

17. The method according to claim 16, characterized in that, Before constructing the mapping relationship between the interference bandwidth, transmit power, and interference power of each interference combination, the method further includes: For each of the aforementioned interference combinations, a linear relationship between the transmission power and the interference power is determined based on each of the aforementioned transmission powers and the corresponding interference power; The interference power of the harmonic interference signal is determined based on the current frequency band combination, the linear relationship, and the current transmit power of the first signal.

18. A communication device, characterized in that, Includes the radio frequency transceiver circuit as described in any one of claims 1-10.

19. A communication device, characterized in that, The communication device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps of the method as described in any one of claims 11 to 17.

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