Communication method and receiver

Abstract

The application provides a communication method and a receiver, the method is applied to the receiver, and the method comprises the following steps: when the receiver is in an idle state, a plurality of channels are obtained by dividing a receiving frequency band of the receiver by a frequency divider of the receiver at a preset frequency division ratio; the receiver performs channel scanning on the plurality of channels according to preset scanning parameters, obtains channel scanning information of each of the plurality of channels respectively, and obtains channel quality information of each of the plurality of channels according to the channel scanning information, wherein the channel scanning information at least comprises information of an interference signal; the receiver determines a receiving channel according to the current channel and the channel quality information of each of the plurality of channels, and obtains a receiving mode corresponding to the receiving channel; when a signal needs to be received, the signal is received in the receiving channel, and the received signal is processed through the corresponding receiving mode. In the foregoing manner, the receiving channel is determined in advance and the corresponding receiving mode is set by using the obtained scanning information and channel quality, so that the anti-interference performance of the receiver is improved.

Description

Technical Field

[0001] This application relates primarily to the field of communication technology, and in particular to a communication method and receiver. Background Technology

[0002] In current private network communication devices and systems, the use of fixed channels to receive signals (which typically refers to continuously monitoring and receiving signals on a specific frequency or channel) does not provide targeted identification of signals in the environment. It only judges the RSSI (Received Signal Strength Indicator) strength of the useful signals received and takes corresponding actions based on specific threshold values. However, it cannot accurately judge other factors that require judgment, such as signal quality and the identification of interference signals, or it may lose other useful and important signals, making it impossible to make relevant judgments and take corresponding measures. Summary of the Invention

[0003] The main objective of this application is to provide a communication method and receiver to solve the problem in the prior art that it is impossible to judge the signal quality or interference signals, thus causing signal loss. It can monitor the radio frequency signals covered by the frequency range and provide a reliable basis for processing subsequent signals and avoiding interference.

[0004] To address the aforementioned problems, this application provides a communication method and a receiver. The communication method, applied to a receiver, includes: when the receiver is idle, dividing the receiver's receiving frequency band using a frequency divider at a preset division ratio to obtain multiple channels; the receiver performing channel scanning on the multiple channels according to preset scanning parameters to obtain channel scanning information for each channel, and acquiring channel quality information for each channel based on the channel scanning information, wherein the channel scanning information includes at least information about interference signals; the receiver determining a receiving channel based on the current channel and the channel quality information of each channel, and acquiring a receiving mode corresponding to the receiving channel; and when signal reception is required, receiving signals on the receiving channel and processing the received signals using the corresponding receiving mode.

[0005] To address the aforementioned problems, this application also provides a receiver, comprising: a frequency divider, which, when the receiver is in an idle state, divides the receiver's receiving frequency band into multiple channels using a preset division ratio; a demodulator, coupled to the frequency divider, configured to, when the receiver is in an idle state, perform channel scanning on the multiple channels according to preset scanning parameters, obtain channel scanning information for each of the multiple channels, and acquire channel quality information for each channel based on the channel scanning information, wherein the channel scanning information includes at least information about interference signals; and a controller, coupled to the demodulator, configured to determine a receiving channel based on the current channel and the channel quality information of each channel, and acquire a receiving mode corresponding to the receiving channel; and, when a signal needs to be received, the demodulator receives the signal on the receiving channel and processes the received signal using the corresponding receiving mode.

[0006] The communication method provided in this application includes: when the receiver is in an idle state, dividing the receiver's receiving frequency band into multiple channels using a frequency divider at a preset division ratio; the receiver performs channel scanning on the multiple channels according to preset scanning parameters, obtaining channel scanning information for each of the multiple channels, and acquiring channel quality information for each channel based on the channel scanning information, wherein the channel scanning information includes at least information about interference signals; when the receiver needs to receive a signal, it determines the receiving channel based on the current channel and the channel quality information of each channel, and acquires the receiving mode corresponding to the receiving channel to process the received signal.

[0007] In this way, when the receiver is idle, the receiving frequency band is divided to obtain scanning information and channel quality information of multiple channels. The receiver determines the receiving channel based on the current channel and the channel quality information of each channel, so as to plan the receiving scheme and the corresponding receiving mode in advance, thereby improving the communication performance of the receiver. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0009] Figure 1 This is a flowchart illustrating the steps of an embodiment of the communication method provided in this application;

[0010] Figure 2 yes Figure 1 A flowchart illustrating the sub-steps of step S20;

[0011] Figure 3 This is a schematic diagram of the structure of the first embodiment of the receiver provided in this application;

[0012] Figure 4 This is a schematic diagram of the structure of the second embodiment of the receiver provided in this application;

[0013] Figure 5 This is a schematic diagram of the structure of the third embodiment of the receiver provided in this application;

[0014] Figure 6 This is a schematic diagram of the structure of the fourth embodiment of the receiver provided in this application;

[0015] Figure 7 This is a schematic diagram of the fifth embodiment of the receiver provided in this application;

[0016] Figure 8 yes Figure 5 A magnified view of a portion of the image;

[0017] Figure 9 This is a schematic diagram of the implementation scheme of the receiver provided in this application.

[0018] Icon labels:

[0019] 100. Receiver; 10. Frequency divider; 20. Demodulator; 30. Controller; 40. First receiving link; 50. Second receiving link; Switching unit 60. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are only for explaining this application and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, not all structures. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] The terms "first," "second," etc., used in this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] Currently, in private network communication devices and systems, the fixed-channel signal reception method can only determine the RSSI strength of the useful signal received, but cannot perform targeted identification to detect and determine the signal quality and the presence of interference signals, thus hindering accurate judgment and response. Therefore, this application provides a communication method and receiver to solve the above problems.

[0024] See Figure 1 As shown, Figure 1 This is a flowchart illustrating the steps of an embodiment of the communication method provided in this application; specifically, the communication method is applied to a receiver, and the communication method specifically includes the following steps:

[0025] Step S10: When the receiver is in an idle state, the receiver's receiving frequency band is divided by the receiver's frequency divider at a preset division ratio to obtain multiple channels.

[0026] When the receiver is in an idle state, including when the receiver is in receiving mode and there is no signal being received, in step S10, the frequency of the input signal is reduced to a lower multiple by using a frequency division setting. By dividing the high-frequency signal into multiple sub-bands, the receiving frequency of the receiver can be reduced, and the corresponding bandwidth is reduced accordingly. This allows the receiver to scan a wider frequency range in a shorter time, improves the scanning frequency speed within the monitoring range, and thus reduces the time and resources occupied.

[0027] Understandably, the first step is to determine the scanning range, i.e., the frequency range or time interval to be scanned, and set the division factor: the division factor determines the relationship between the input signal frequency and the output signal frequency. For example, if the division factor is N, the output frequency is 1 / N of the input frequency. Next, select the scan step size: the scan step size defines the increment of frequency or time during the scan. Smaller step sizes can provide higher resolution but may require longer scan times. Generate the scan signal: use a variable frequency source (such as a frequency synthesizer) to generate the scan signal. The frequency of this signal can be gradually changed according to the set scan step size. Apply the frequency divider: input the scan signal into the frequency divider. The frequency divider reduces the signal frequency according to the division factor, producing a lower frequency output signal. Scanning process: the frequency source gradually changes the frequency according to the scan step size, and the signal output by the frequency divider changes accordingly. This process can be manually controlled or implemented through an automated scan control algorithm. Signal detection and analysis: in each scan step, a receiver or sensor is used to detect and analyze the signal output by the frequency divider. This may include measuring signal strength, demodulating the signal, identifying signal characteristics, etc. Data Recording: Record the data collected during the scanning process, including information such as frequency, time, signal strength, and signal quality. Post-processing: After scanning, perform post-processing on the collected data, such as signal demodulation and data analysis. Result Interpretation: Based on the scan data, interpret and identify information such as signal sources, interference, and signal coverage areas. Feedback and Adjustment: Based on the scan results, it may be necessary to adjust the scan step size, frequency division coefficient, or scanning strategy to optimize the scanning process and improve scanning efficiency.

[0028] In the above embodiments, after the receiver performs channel scanning on multiple channels according to preset scanning parameters, obtains channel scanning information for each of the multiple channels, and obtains channel quality information for each channel based on the channel scanning information, the receiver further includes: configuring the division ratio of the receiver's frequency divider to 1, so that the frequency divider does not divide the receiver's receiving frequency band.

[0029] Step S20: The receiver performs channel scanning on multiple channels according to preset scanning parameters, obtains channel scanning information for each of the multiple channels, and obtains channel quality information for each channel based on the channel scanning information. The channel scanning information includes at least information about interference signals.

[0030] like Figure 2 As shown, where, Figure 2 yes Figure 1 A flowchart illustrating the sub-steps of step S20 is provided. Specifically, in one embodiment, the channel scanning information includes at least the signal strength and frequency location of the interfering signal. Obtaining channel quality information for each channel based on the channel scanning information includes the following sub-steps:

[0031] Step S21: Based on the frequency location of the interference signal, confirm that the interference signal is not within the first frequency range of the main frequency of the channel, then the channel is the optimal channel.

[0032] Step S22: Based on the frequency location of the interference signal, confirm that the interference signal is within the first frequency range of the main frequency of the distance channel and not within the second frequency range of the main frequency of the distance channel. Then, based on the signal strength of the interference signal, confirm whether the signal strength of the interference signal is less than a preset interference signal strength threshold, wherein the first frequency range is greater than the second frequency range.

[0033] Step S23: If the signal strength of the interference signal is less than the preset interference signal strength threshold, then the channel is a better channel.

[0034] Signal quality primarily refers to signal strength. In other embodiments, signal quality may also include other parameters such as signal-to-noise ratio (SNR) and bit error rate (BER). SNR and BER are two important metrics for measuring the performance of a communication system. SNR describes the ratio of signal strength to background noise intensity; a higher SNR indicates less noise in the signal and better communication quality. BER measures the accuracy of data transmission; it represents the ratio of received erroneous bits to the total number of transmitted bits. A low BER indicates high accuracy and reliability in data transmission.

[0035] Understandably, the above sub-steps involve the confirmation and determination of the optimal channel and the better channel. If the detected channel does not meet the above conditions, it can be defined as a regular channel.

[0036] After completing the recording and scanning of information, the quality of the channels stored on the host is marked, and the channels are divided into optimal channels, better channels, and normal channels according to their quality. For example, in one embodiment, the optimal channel is defined as follows: An optimal channel is one where there are no other signals within a main channel frequency offset of ≤X MHz (e.g., X = 1 MHz). Assuming the main channel frequency is f0, the first frequency range from the main channel frequency f0 is [f1 ~ f2], where f1 = f0 - X MHz and f2 = f0 + X MHz. If the interference signal is not within this range, the channel is considered optimal. A secondary optimal channel is one where there are no other signals within a main channel frequency offset of ≤Y MHz (e.g., Y = 100 kHz), and the signal strength of the interference signal is less than a preset interference signal strength threshold. This means the second frequency range from the main channel frequency f0 is [f3 ~ f4], where f3 = f0 - Y kHz and f4 = f0 + Y kHz. If the interference signal is not within this range, and the signal strength of the interference signal is less than the preset interference signal strength threshold, the channel is considered secondary optimal. A normal channel is one where there are other signals within a main channel frequency offset of Y kHz. The normal channel is the channel with signal quality within a preset signal quality range.

[0037] Step S30: The receiver determines the receiving channel based on the current channel and the channel quality information of each channel and obtains the receiving mode corresponding to the receiving channel. When a signal needs to be received, the receiver receives the signal on the receiving channel and processes the received signal through the corresponding receiving mode.

[0038] By using the above method, when the receiver is idle, the receiving frequency band is divided to obtain scanning information and channel quality information of multiple channels. When the receiver needs to receive a signal, the receiving channel is determined based on the scanning information and channel quality information, so as to plan the receiving scheme and corresponding receiving mode in advance, thereby improving the communication performance of the receiver.

[0039] Furthermore, in step S30 above, the receiver corresponds to different receiving schemes in different communication modules, such as direct mode and trunking mode. These two modes provide different communication methods and application scenarios in the communication system. The trunking mode focuses on scheduling and management through the trunking system, while the direct mode allows devices to communicate directly without relying on the trunking system.

[0040] Understandably, after completing the scan and recording the obtained scan information, if the receiver's current communication mode is trunking mode, it will perform quality judgment on its multiple available channels (i.e., in trunking mode, scan each channel and the surrounding spectrum, and select the channel with relatively less interference). The trunking mode usually refers to a communication system architecture that allows multiple users to share limited communication resources, such as radio frequencies, in order to improve spectrum utilization and reduce costs.

[0041] For the cluster mode scheme: In one embodiment, if the receiver's communication mode is cluster mode, the receiver determines the receiving channel and obtains the receiving mode corresponding to the receiving channel based on the current channel and the channel quality information of each channel. This includes: if there is an optimal channel in the channel, the receiver selects the optimal channel as the receiving channel and selects the high-sensitivity mode as the receiving mode; if there is no optimal channel but there is a relatively good channel, the receiver selects the relatively good channel as the receiving channel and selects the normal receiving mode as the receiving mode; if there is neither an optimal channel nor a relatively good channel in the channel, the receiver continues to use the current channel as the receiving channel and selects the anti-interference mode as the receiving mode.

[0042] In this implementation, when the receiving mode is high-sensitivity mode, the received signal is processed by multiple cascaded low-noise amplifiers, and / or, when the receiving mode is normal receiving mode, the received signal is processed by a single low-noise amplifier. In one specific embodiment, if in trunking mode, the quality of available channels is searched. If an optimal channel is found, the system switches to the optimal channel and activates high-sensitivity mode (dual LNA mode). If no optimal channel is found, the system checks for a better channel. If a better channel is found, the system switches to the better channel and activates normal receiving mode (single LNA mode). If neither of these channels is available, the system remains unchanged and activates anti-interference mode. The dual LNA mode (Dual Low Noise Amplifier, or DualLNA for short) is a technology used in wireless communication receivers that includes two low-noise amplifiers (LNAs). The purpose of this mode is to improve the quality of the received signal while reducing the impact of noise and interference. Single LNA mode refers to using a single low-noise amplifier (LNA) to amplify the received weak signal, while anti-interference mode can adopt a series of conventional anti-interference techniques and strategies to improve the communication system's ability to resist various interferences and ensure the reliability and stability of data transmission. For example, anti-interference strategies such as attenuation, power control, and gain adjustment are not specifically limited here.

[0043] In some embodiments, in cluster mode, multiple signals may have the same channel quality, such as multiple optimal channels, multiple better channels, or multiple of both. For the above situation, the following implementation scheme can be adopted:

[0044] In one embodiment, when the number of optimal channels is at least two, the receiver selects the optimal channel as the receiving channel when it needs to receive a signal, including: selecting the optimal channel with the closest frequency to the receiver's current channel as the receiving channel.

[0045] Alternatively, in another embodiment, when there is no optimal channel in the channel and the number of better channels is at least two, the receiver selects a better channel as the receiving channel, including: the receiver selects a better channel with the closest frequency to the receiver's current channel as the receiving channel.

[0046] For the direct-through mode scheme: In one embodiment, if the receiver's communication mode is direct-through mode, the receiver determines the receiving channel and obtains the receiving mode corresponding to the receiving channel based on the current channel and the channel quality information of each channel, including: if the current channel is the optimal channel, the receiver continues to use the current channel as the receiving channel and selects the high-sensitivity mode as the receiving mode; if the current channel is a relatively good channel, the receiver continues to use the current channel as the receiving channel and selects the normal receiving mode as the receiving mode; if the current channel is neither the optimal nor a relatively good channel, the receiver continues to use the current channel as the receiving channel and selects the anti-interference mode as the receiving mode.

[0047] The implementation of the above embodiments in a specific circuit is as follows: Figure 3 As shown, Figure 3 This is a schematic diagram of the first embodiment of the receiver provided in this application; wherein the receiver 100 includes: a frequency divider 10, a demodulator 20, and a controller 30; wherein the frequency divider 10 is configured to divide the receiving frequency band of the receiver 100 into multiple channels by a preset division ratio when the receiver is in an idle state; the demodulator 20 is coupled to the frequency divider 10, and is configured to perform channel scanning on the multiple channels according to preset scanning parameters when the receiver 100 is in an idle state, obtain channel scanning information of each of the multiple channels, and obtain channel quality information of each channel according to the channel scanning information, wherein the channel scanning information includes at least information on interference signals; the controller 30 is coupled to the demodulator 20, and is configured to determine the receiving channel and obtain the receiving mode corresponding to the receiving channel according to the current channel and the channel quality information of each channel; when a signal needs to be received, the demodulator 20 receives the signal on the receiving channel and processes the received signal according to the corresponding receiving mode.

[0048] In one embodiment, the frequency divider 10 is designed as a 1 / N frequency divider 10 (N: 1, 2, 4... maximum value > 100), and the frequency division ratio N of the frequency divider 10 is configured, as well as the scanning step; for example, for frequency scanning between 400MHz and 470MHz, if a 100 division is used, the scanning bandwidth is narrowed from 70MHz to 0.7MHz, which can greatly reduce the scanning bandwidth, improve the scanning frequency speed within the monitoring range, and reduce the time and resources occupied.

[0049] Alternatively, in one embodiment, as Figure 4 As shown, Figure 4This is a schematic diagram of the structure of the receiver 100 according to the second embodiment of the present application; wherein the receiver 100 includes a first receiving link and a second receiving link, the first receiving link includes a plurality of cascaded low noise amplifiers, and the second receiving link includes a single low noise amplifier; when the receiving mode is a high sensitivity mode, the received signal is processed through the first receiving link, and / or, when the receiving mode is a normal receiving mode, the received signal is processed through the second receiving link.

[0050] Understandably, in the above scheme, a selection is made based on different communication modes and corresponding channels. That is, the receiving channel is determined and the corresponding receiving mode is obtained based on the current channel and the channel quality information of each channel. Figure 4 As shown, the switching unit 60 is used to select different receiving links for processing. For example, two LNAs (Low Noise Amplifiers) are connected in series in the first receiving link, and a single LNA is used in the second receiving link. The sensitivity of the receiver 100 can be effectively improved by using multiple LNAs connected in series.

[0051] In other options, see Figure 5 As shown, Figure 5 This is a schematic diagram of the third embodiment of the receiver provided in this application. It can be understood that, corresponding to the specific solutions of the above embodiments, in this embodiment, a 1 / N divider 10 is added at the end of the receiving link for fast scanning of the signal. The receiver 100100 receives the radio frequency signal through the antenna (ANT), and after the signal is processed by a series of front-end components such as amplifiers (LNA), low-pass filters (LPF), high-pass filters (HPF), attenuators (ATT), and switches, it is divided by the 1 / N divider 10 (i.e., the divider 10 in this application). After the frequency division, the signal is further processed by a subsequent chip (i.e., the demodulator 20 in this application). The main control BBIC and MCU implement a series of operations such as signal scanning and component control.

[0052] like Figure 5As shown in the diagram, the main components involved are: PGA (Programmable Gain Amplifier): Used to adjust the amplifier's gain as needed. BGA (Ball Grid Array): An integrated circuit packaging technology that connects to the circuit board by forming an array of spherical solder points under the chip. AMP (Amplifier): Used to increase the amplitude of a signal. RD (Receive Demodulator): Used to convert the received modulated signal back to the original information. SWITCH: Used to control the on or off state of a signal in a circuit. ATT (Attenuator): Used to reduce the amplitude of a signal. ADC (Analog-to-Digital Converter): Converts analog signals to digital signals. DAC (Digital-to-Analog Converter): Converts digital signals to analog signals. LOOP FILTER: A loop filter, typically used to control noise and stability in control systems, such as in a phase-locked loop (PLL). VCO (Voltage-Controlled Oscillator): A voltage-controlled oscillator whose output frequency changes with the control voltage. RX-LO (Receiver Local Oscillator): The receiver local oscillator, used to convert the received signal frequency to an intermediate frequency (IF) or baseband frequency. PLL (Phase-Locked Loop): A phase-locked loop, an electronic circuit used to synchronize the phase of the output signal with the input signal; commonly used in frequency synthesis, frequency modulation, and demodulation. Pre-amplifier: An amplifier used to increase the signal amplitude in the early stages of the signal chain.

[0053] Alternatively, in one embodiment, as Figure 6 As shown, where, Figure 6 This is a schematic diagram of the fourth embodiment of the receiver provided in this application. The frequency divider 10 is integrated inside the demodulator 20. When the receiver 100 is in an idle state, the internal frequency divider 10 divides the receiving frequency band of the receiver 100 into multiple channels at a preset division ratio. The demodulator 20 performs channel scanning on the multiple channels according to preset scanning parameters, obtaining channel scanning information for each channel. The channel scanning information includes at least information about interference signals. It is understood that, unlike the above scheme, in this embodiment, the frequency divider 10 is integrated inside the demodulator 20, allowing for fast frequency division scanning of signal detection directly through the demodulator 20.

[0054] See Figure 7As shown, Figure 7 This is a schematic diagram of the fifth embodiment of the receiver provided in this application; it can be understood that, corresponding to the specific solutions of the above embodiments, in this embodiment, the frequency divider 10 is integrated inside the chip (demodulator 20); wherein, the internally integrated frequency divider 10 is located at the signal input port. The components involved can be referred to in the... Figure 5 The description also includes components such as PA Driver (Power Amplifier Driver) and Demod (Demodulation) 20.

[0055] Optionally, in one embodiment, the controller 30 is configured to, in cluster mode, when multiple channels exist, switch to the optimal channel in response to the presence of an optimal channel among the multiple channels; or, switch to the superior channel in response to the absence of an optimal channel among the multiple channels but the presence of a superior channel; or, maintain the current channel in response to the absence of both an optimal channel and a superior channel among the multiple channels; wherein the signal quality of the optimal channel is better than the signal quality of the superior channel, and the signal quality of the superior channel is better than a preset signal quality.

[0056] It is understood that, in another embodiment, such as Figure 8 As shown, Figure 8 yes Figure 5 A partially enlarged schematic diagram; wherein, through Figure 8 The line above, that is, the line passing through AT&T, is line one; through Figure 8 Below, the line directly connected to the two switches is line two; specifically, line one is in attenuation mode, and line two is in direct-through mode; ATT refers to an adjustable attenuator, which can control the signal strength by changing the degree of signal attenuation, so that it reaches the required level within a specific range. Using the above scheme, this application also provides an anti-interference mode, which includes: if the current channel receiving capability is greater than or equal to a set value M, but the demodulated signal quality is less than a set value N, then the receiving link switch is switched to attenuation mode, where the normal state is direct-through mode.

[0057] Optionally, in one embodiment, the controller 30 is configured to: determine the signal quality of the current channel based on the scanning information of the current channel in response to the current being a pass-through mode; and adjust the communication mode based on the signal quality of the current channel.

[0058] Understandably, in direct mode, the quality of the current channel is directly detected and judged, and the communication mode is directly adjusted according to the detection results (i.e., scan the current channel and surrounding spectrum, and select different working modes according to the surrounding spectrum conditions of the current channel).

[0059] As can be understood, corresponding to the above schemes, the high-sensitivity mode is equivalent to the dual LNA mode, the normal mode is equivalent to the single LNA mode, and the anti-interference mode can adopt the above... Figure 8 The switching mode in the solution, or the use of a series of conventional technologies and strategies, can improve the communication system's ability to resist various interferences and ensure the reliability and stability of data transmission.

[0060] See Figure 9 As shown, Figure 9 This is a schematic diagram of the receiver implementation scheme provided in this application; it can be understood that, in conjunction with the above embodiments, this application also provides a receiving mode adjustment method, the main scheme of which includes the following steps: after determining the receiving channel frequency of the host device, configuring the N coefficient and scanning step of the frequency divider 10, quickly scanning the spatial signal within the bandwidth, completing the scanning, and configuring the frequency divider 10 to 1. Figure 9 As shown, different switching and settings are performed for different modes as follows: The current mode is determined. If the current mode is cluster mode, the quality of all available channels is assessed; or, if the current mode is direct-through, the quality of the current channel is assessed. Specifically, in cluster mode, the channel is assessed. If an optimal channel exists among all channels, the system switches to the optimal channel and enters high-sensitivity mode. If no optimal channel exists, the system checks if a relatively optimal channel exists. If a relatively optimal channel exists, the system switches to the relatively optimal channel and sets it to normal reception mode. If neither an optimal nor a relatively optimal channel exists, the current channel is maintained and the system enters anti-interference mode. The signal quality of the optimal channel is superior to that of the relatively optimal channel, and the signal quality of the relatively optimal channel is superior to a preset signal quality. In direct-through mode, if the current channel is determined to be the optimal channel, the system switches to high-sensitivity mode. If the current channel is determined to be a non-optimal channel, the system further checks if it is a relatively optimal channel. If the current channel is determined to be a relatively optimal channel, the system switches to normal reception mode. If the current channel is determined to be a non-relatively optimal channel, the system directly enters anti-interference reception mode.

[0061] The optimal channel and the better channel in the above scheme are determined by referring to the scheme of step S20 and its sub-steps in the above embodiment.

[0062] The communication method provided in this application is applied to a receiver 100. The communication method includes: when the receiver 100 is in an idle state, dividing the receiving frequency band of the receiver 100 by a frequency divider 10 at a preset division ratio to obtain multiple channels; the receiver 100 performs channel scanning on the multiple channels according to preset scanning parameters, obtains channel scanning information for each of the multiple channels, and obtains channel quality information for each channel based on the channel scanning information, wherein the channel scanning information includes at least information about interference signals; the receiver 100 determines the receiving channel based on the current channel and the channel quality information of each channel and obtains the receiving mode corresponding to the receiving channel; when a signal needs to be received, the receiver receives the signal on the receiving channel and processes the received signal through the corresponding receiving mode.

[0063] By using the above method, when the receiver 100 is in an idle state, the receiving frequency band is divided to obtain the scanning information and channel quality information of multiple channels in the divided frequency band. This reduces the receiving frequency and corresponding bandwidth within the scanning frequency band range, increases the scanning frequency speed within the monitoring range, and reduces the time and resources occupied. Furthermore, when the receiver 100 needs to receive a signal, the receiving channel is determined based on the scanning information and channel quality information to plan the receiving scheme and corresponding receiving mode in advance, thereby improving the communication performance of the receiver 100.

[0064] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A communication method, characterized in that, Applied to a receiver, the communication method includes: When the receiver is in an idle state, the receiver's receiving frequency band is divided by the receiver's frequency divider at a preset division ratio to obtain multiple channels; The receiver performs channel scanning on the plurality of channels according to preset scanning parameters, obtains channel scanning information for each of the plurality of channels, and obtains channel quality information for each channel based on the channel scanning information, wherein the channel scanning information includes at least information on interference signals; The receiver determines the receiving channel based on the current channel and the channel quality information of each channel, and obtains the receiving mode corresponding to the receiving channel. When a signal needs to be received, the receiver receives the signal on the receiving channel and processes the received signal through the corresponding receiving mode.

2. The communication method according to claim 1, characterized in that, The channel scanning information includes at least the signal strength and frequency location of the interfering signal. Obtaining the channel quality information for each channel based on the channel scanning information includes: If the interference signal is confirmed to be outside the first frequency range from the dominant frequency of the channel based on its frequency location, then the channel is the optimal channel. If the interference signal is located within a first frequency range from the main frequency of the channel and not within a second frequency range from the main frequency of the channel, then the signal strength of the interference signal is determined to be less than a preset interference signal strength threshold, wherein the first frequency range is greater than the second frequency range. If the signal strength of the interference signal is less than a preset interference signal strength threshold, then the channel is a better channel.

3. The communication method according to claim 2, characterized in that, If the receiver's communication mode is trunking mode, the receiver determines the receiving channel and obtains the receiving mode corresponding to the receiving channel based on the current channel and the channel quality information of each channel, including: If an optimal channel exists among the channels, then the optimal channel is selected as the receiving channel, and the high-sensitivity mode is selected as the receiving mode. If there is no optimal channel among the channels but there is a relatively better channel, then the relatively better channel is selected as the receiving channel, and the normal receiving mode is selected as the receiving mode. If there is no optimal channel or a better channel among the channels, the current channel will continue to be used as the receiving channel, and the anti-interference mode will be selected as the receiving mode.

4. The communication method according to claim 3, characterized in that, When the number of optimal channels is at least two, selecting the optimal channel as the receiving channel includes: selecting the optimal channel with the closest frequency to the current channel of the receiver as the receiving channel.

5. The communication method according to claim 3, characterized in that, When there is no optimal channel in the channel and the number of the better channels is at least two, selecting the better channel as the receiving channel includes: selecting the better channel with the closest frequency to the current channel of the receiver as the receiving channel.

6. The communication method according to claim 2, characterized in that, If the receiver's communication mode is a direct-through mode, the receiver determines the receiving channel and obtains the receiving mode corresponding to the receiving channel based on the current channel and the channel quality information of each channel, including: If the current channel is the optimal channel, the receiver continues to use the current channel as the receiving channel and selects the high-sensitivity mode as the receiving mode; If the current channel is a superior channel, the receiver continues to use the current channel as the receiving channel and selects the normal receiving mode as the receiving mode; If the current channel is not the optimal channel or a better channel, the receiver continues to use the current channel as the receiving channel and selects the anti-interference mode as the receiving mode.

7. The communication method according to any one of claims 3-6, characterized in that, When the receiving mode is high-sensitivity mode, the received signal is processed by multiple cascaded low-noise amplifiers, and / or, when the receiving mode is normal receiving mode, the received signal is processed by a single low-noise amplifier.

8. The communication method according to claim 1, characterized in that, The receiver performs channel scanning on the plurality of channels according to preset scanning parameters, obtains channel scanning information for each of the plurality of channels, and obtains channel quality information for each channel based on the channel scanning information. The communication method further includes: The frequency division ratio of the receiver's frequency divider is configured to 1, so that the frequency divider does not divide the receiver's receiving frequency band.

9. A receiver, characterized in that, include: A frequency divider is configured to divide the receiver's receiving frequency band into multiple channels by a preset division ratio when the receiver is in an idle state. A demodulator, coupled to the frequency divider, is configured to perform channel scanning on the plurality of channels according to preset scanning parameters when the receiver is in an idle state, to obtain channel scanning information for each of the plurality of channels, and to obtain channel quality information for each channel based on the channel scanning information, wherein the channel scanning information includes at least information on interference signals. A controller, coupled to the demodulator, is configured to determine a receiving channel based on the current channel and channel quality information of each channel, and to obtain a receiving mode corresponding to the receiving channel. When a signal needs to be received, the demodulator receives the signal on the receiving channel and processes the received signal using the corresponding receiving mode.

10. The receiver according to claim 9, characterized in that, The receiver includes a first receiving link and a second receiving link, the first receiving link including multiple cascaded low-noise amplifiers, and the second receiving link including a single low-noise amplifier. When the receiving mode is high sensitivity mode, the received signal is processed through the first receiving link, and / or, when the receiving mode is normal receiving mode, the received signal is processed through the second receiving link.

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