WO2019140698A1 - Procédé et dispositif de contrôle de la largeur de bande d'un filtre de boucle - Google Patents

Procédé et dispositif de contrôle de la largeur de bande d'un filtre de boucle Download PDF

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Publication number
WO2019140698A1
WO2019140698A1 PCT/CN2018/073663 CN2018073663W WO2019140698A1 WO 2019140698 A1 WO2019140698 A1 WO 2019140698A1 CN 2018073663 W CN2018073663 W CN 2018073663W WO 2019140698 A1 WO2019140698 A1 WO 2019140698A1
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WO
WIPO (PCT)
Prior art keywords
communication terminal
bandwidth
signal
loop filter
communication
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Application number
PCT/CN2018/073663
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English (en)
Chinese (zh)
Inventor
冷鹏
朱先成
Original Assignee
海能达通信股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 海能达通信股份有限公司 filed Critical 海能达通信股份有限公司
Priority to PCT/CN2018/073663 priority Critical patent/WO2019140698A1/fr
Publication of WO2019140698A1 publication Critical patent/WO2019140698A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a method and an apparatus for controlling a bandwidth of a loop filter.
  • the loop filter is an important part of the frequency generating unit.
  • the loop filter bandwidth is one of the determinants of the closed-loop phase noise index.
  • VCO voltage controlled oscillator
  • the loop filter bandwidth is changed accordingly to speed up the lock.
  • the bandwidth of the loop filter is fixed, and it does not dynamically affect the neighboring channel selectivity, blocking, and adjacent channel power ratio of the communication system.
  • the bandwidth of the loop filter cannot be dynamically configured, the performance of the communication terminal is not good, and the anti-interference ability of the communication is poor.
  • the technical problem to be solved by the present application is to provide a method and a device for controlling the bandwidth of a loop filter, which can dynamically configure the bandwidth of the loop filter, improve the performance of the communication terminal, and improve the anti-interference ability of the communication.
  • the first aspect of the present application provides a method for controlling a bandwidth of a loop filter, which is applied to a first communication terminal, including: receiving a signal from a second communication terminal; and detecting a signal from the second communication terminal a signal strength; determining whether the signal strength is greater than an intensity preset threshold; if the signal strength is greater than the intensity preset threshold, reducing a current signal bandwidth of the loop filter of the first communication terminal to The first signal bandwidth.
  • the current signal of the loop filter of the first communications terminal is The step of reducing the bandwidth to the first signal bandwidth includes: if the signal strength is greater than the strength preset threshold, determining whether the signal bandwidth is less than a preset bandwidth; if the signal bandwidth is greater than the preset bandwidth, The loop filter switches to a filtering mode that is less than the first signal bandwidth of the signal bandwidth.
  • the first communication is performed if the signal strength is greater than the strength preset threshold
  • the step of reducing the current signal bandwidth of the loop filter of the terminal to the first signal bandwidth further comprises: obtaining a signal strength after reducing the current signal bandwidth to the first signal bandwidth; determining whether the signal strength is greater than the An intensity preset threshold, if the intensity preset threshold is greater, maintaining a first signal bandwidth of the loop filter; if less than the intensity preset threshold, increasing a signal bandwidth of the loop filter To the second signal bandwidth.
  • control method further includes: if the signal strength is not greater than the strength preset threshold, Maintain the signal bandwidth of the current loop filter.
  • the current signal bandwidth is determined by the first communication terminal according to a current communication mode.
  • the first communication terminal when the first communication terminal is to send a signal to the second communication terminal, according to a loop filter of the first communication terminal
  • the current signal bandwidth determines a signal bandwidth of the loop filter that the first communication terminal transmits to the second communication terminal.
  • a sixth possible implementation manner of the first aspect when the current signal bandwidth of the loop filter of the first communications terminal is lower than a bandwidth preset threshold And maintaining a current signal bandwidth of the loop filter of the first communication terminal for transmitting a signal to the second communication terminal.
  • a signal bandwidth of a loop filter of the first communication terminal is determined for transmitting a signal to the second communication terminal according to a communication mode with the second communication terminal.
  • an eighth possible implementation of the first aspect if the communication mode with the second communication terminal is a digital mode, maintaining the loop filter a current signal bandwidth for transmitting a signal to the second communication terminal;
  • the communication mode with the second communication terminal is an analog mode, reducing a current signal bandwidth of the loop filter to a first signal bandwidth for transmitting a signal to the second communication terminal.
  • the signal bandwidth of the loop filter of the first communications terminal is determined to be the first communications The current signal bandwidth of the loop filter of the terminal.
  • a second aspect of the present application provides a method for controlling a bandwidth of a loop filter, including: determining, by a first communication terminal, a communication mode with a second communication terminal to be communicated, and determining the present according to the communication mode a signal bandwidth of the secondary call loop filter; establishing communication with the second communication terminal according to the signal bandwidth, so that the second communication terminal determines whether the signal strength of the current communication is greater than an intensity preset threshold, and When the signal strength is greater than the intensity preset threshold, the current signal bandwidth of the loop filter is reduced.
  • the first communications terminal determines a communication mode with the second communications terminal to be communicated, and determines the current call loop filtering according to the communications mode
  • the step of the signal bandwidth of the device includes: determining, by the first communication terminal, whether the communication mode of the second communication terminal to be communicated is an analog communication mode or a digital communication mode; if the digital mode is, increasing the loop The current signal bandwidth of the filter to the third signal bandwidth; if in the analog mode, the current signal bandwidth of the loop filter is reduced to the first signal bandwidth.
  • a third aspect of the present application provides a communication terminal, where the communication terminal includes: a receiver for receiving signals from other communication terminals; and a detector for detecting signal strength of signals from other communication terminals a determining module, configured to determine whether the signal strength is greater than an intensity preset threshold; and a regulator, configured to reduce the loop of the first communication terminal when the signal strength is greater than the intensity preset threshold The current signal bandwidth of the filter.
  • the communications terminal further includes: a transmitter, configured to send a signal to the other communications terminal, and a determining module, configured to: when the communications terminal is to be When the other communication terminal transmits a signal, the signal bandwidth of the loop filter used by the communication terminal to send a signal to the other communication terminal is determined according to the current signal bandwidth of the loop filter of the communication terminal.
  • a fourth aspect of the present application provides a communication terminal, where the communication terminal includes: a communication circuit, a memory, and a processor; the communication circuit is configured to transmit an instruction; and the memory is configured to store the processor An executed computer program and intermediate data generated when the computer program is executed; and when the processor executes the computer program, implementing the above-described loop filter bandwidth control method.
  • the utility model has the beneficial effects that the bandwidth of the loop filter is dynamically configured according to the transmission and reception state, the working system, the signal strength RSSI value and the current bandwidth of the loop filter, and the ring can be dynamically configured according to the prior art.
  • the bandwidth of the road filter improves the performance of the communication terminal and improves the anti-interference ability of the communication.
  • FIG. 1 is a schematic structural diagram of an embodiment of a loop filter bandwidth control system of the present application
  • FIG. 2 is a schematic flowchart of a first embodiment of a method for controlling a loop filter bandwidth according to the present application
  • FIG. 3 is a schematic flow chart of a specific implementation manner of a method for controlling a bandwidth of a loop filter of FIG. 2;
  • FIG. 4 is a schematic flow chart of a second embodiment of a method for controlling a loop filter bandwidth according to the present application
  • FIG. 5 is a schematic flow chart of another specific implementation manner of a method for controlling bandwidth of a loop filter of the present application
  • FIG. 6 is a schematic structural diagram of a first embodiment of a communication terminal according to the present application.
  • FIG. 7 is a schematic structural diagram of a second embodiment of a communication terminal according to the present application.
  • FIG. 8 is a schematic structural diagram of a third embodiment of a communication terminal according to the present application.
  • FIG. 9 is a schematic structural diagram of a fourth embodiment of a communication terminal according to the present application.
  • 10 is an experimental data table of an embodiment of a method for controlling a bandwidth of a loop filter of the present application.
  • FIG. 1 is a schematic structural diagram of an embodiment of a loop filter bandwidth control system of the present application.
  • the control system of the loop filter bandwidth of the present embodiment includes a first communication terminal 10 and a second communication terminal 11.
  • the first communication terminal 10 includes any one of a smart phone, a tablet computer, a smart TV, and other smart devices, such as a smart watch.
  • the second communication terminal 11 includes a smart phone, a tablet computer, a smart TV, a communication base station, and other smart devices. There is no limit here.
  • the first communication terminal 10 and the second communication terminal 11 each include a loop filter, and the bandwidth of the loop filter includes a first signal bandwidth, a second signal bandwidth, and a third signal bandwidth, the first signal bandwidth is a narrow bandwidth, and the second The signal bandwidth is a normal bandwidth, and the third signal bandwidth is a wide bandwidth.
  • the communication terminal can control the bandwidth of the loop filter to switch between the first signal bandwidth, the second signal bandwidth, and the third signal bandwidth.
  • the second communication terminal 11 transmits a signal to the first communication terminal 10, and the first communication terminal 10 receives the signal transmitted by the second communication terminal 11.
  • the second communication terminal 11 determines a communication mode with the first communication terminal 10 to be communicated, and determines a signal bandwidth of the current call loop filter according to the communication mode; and then establishes communication with the first communication terminal 10 according to the signal bandwidth.
  • the first communication terminal 10 receives a signal from the second communication terminal 11 and detects the signal strength of the signal from the second communication terminal 11. Then, the first communication terminal 10 determines whether the signal strength is greater than the intensity preset threshold; if the signal strength is greater than the intensity preset threshold, the first communication terminal 10 reduces the current signal bandwidth of the loop filter of the first communication terminal 10 to the first A signal bandwidth.
  • FIG. 2 is a schematic flowchart of a first embodiment of a method for controlling a bandwidth of a loop filter according to the present application
  • FIG. 3 is a schematic flowchart of a specific implementation manner of a method for controlling a bandwidth of a loop filter of FIG. 2.
  • the method for controlling the bandwidth of the loop filter of this embodiment includes the following steps:
  • S201 Receive a signal from the second communication terminal.
  • the first communication terminal includes a smart phone, a tablet computer, a smart TV, and other smart devices, such as any one of smart watches
  • the second communication terminal includes a smart phone, a tablet computer, a smart TV, a communication base station, and other smart devices.
  • the first communication terminal and the second communication terminal each include a loop filter, and the bandwidth of the loop filter includes a first signal bandwidth, a second signal bandwidth, and a third signal bandwidth, the first signal bandwidth is a narrow bandwidth, and the second signal bandwidth is a second signal bandwidth.
  • the third signal bandwidth is a wide bandwidth
  • the communication terminal can control the bandwidth of the loop filter to switch between the first signal bandwidth, the second signal bandwidth, and the third signal bandwidth.
  • the first communication terminal receives the signal
  • the second communication terminal transmits a signal
  • the first communication terminal receives the signal transmitted by the second communication terminal.
  • S202 Detect a signal strength of a signal from the second communication terminal.
  • the signal strength passes the RSSI value (Received Signal Strength) Indicator) indicates that the RSSI value is the strength indication value of the received signal, and its implementation is performed after the reverse channel baseband reception filter.
  • RSSI value Receiveived Signal Strength
  • the RSSI value is the strength indication value of the received signal
  • the first communication terminal after receiving the signal transmitted by the second communication terminal, the first communication terminal detects the RSSI value of the signal from the second communication terminal.
  • S203 Determine whether the signal strength is greater than an intensity preset threshold.
  • the intensity preset threshold is determined according to the performance of the system, and for the convenience indication, the intensity preset threshold is represented by n.
  • the first communication terminal acquires the RSSI value communicated with the second communication terminal, and compares the RSSI value with the intensity preset threshold n.
  • the current signal bandwidth is determined by the first communication terminal based on the current communication mode.
  • the first communication terminal when the first communication terminal is to send a signal to the second communication terminal, determining, according to the current signal bandwidth of the loop filter of the first communication terminal, that the first communication terminal sends a signal to the second communication terminal.
  • the signal bandwidth of the loop filter when the first communication terminal is to send a signal to the second communication terminal, determining, according to the current signal bandwidth of the loop filter of the first communication terminal, that the first communication terminal sends a signal to the second communication terminal. The signal bandwidth of the loop filter.
  • the bandwidth preset threshold is determined according to the actual situation.
  • the first signal bandwidth is lower than the bandwidth preset threshold
  • the second signal bandwidth is equal to or greater than the bandwidth preset threshold
  • the third signal bandwidth is greater than the bandwidth preset threshold.
  • the first signal bandwidth is lower than the bandwidth preset threshold, it belongs to a narrow bandwidth.
  • the first communication terminal switches from the receiving state to the transmitting state when the loop filter bandwidth is the first signal bandwidth, it indicates that the transmitted distance is very close. At this time, the first signal bandwidth is transmitted through the analog mode to improve the ACP (adjacent channel power) performance, and the interference of the first communication terminal to the outside is reduced.
  • the second communication terminal transmits a signal. Determining, by the first communication terminal, whether the communication mode of the second communication terminal to be communicated is an analog communication mode or a digital communication mode; if it is a digital mode, increasing a current signal bandwidth of the loop filter to a third signal bandwidth; If in analog mode, the current signal bandwidth of the loop filter is reduced to the first signal bandwidth.
  • the third signal bandwidth is greater than the bandwidth preset threshold, and the signal needs to be sent according to the communication mode
  • the current transmission format is the digital mode
  • the ACP is less affected by the bandwidth of the loop filter, and the wider the loop, the smaller the bit error rate and the farther the communication distance. Therefore, increasing the signal bandwidth of the loop filter to the third signal bandwidth can effectively reduce the bit error rate, improve the communication distance, and improve the performance of the communication system.
  • the ACP is greatly affected by the bandwidth of the loop filter. The communication system switches from the receiving state to the transmitting state when the loop filter bandwidth is the second signal bandwidth, and the loop filter bandwidth needs to be reduced to the first signal bandwidth, which can reduce the impact of the ACP and improve the performance of the communication system.
  • the signal bandwidth of the loop filter of the first communication terminal is determined to be the current signal bandwidth of the loop filter of the first communication terminal. For example, if the communication system switches from the receiving state to the transmitting state when the loop filter bandwidth is the second signal bandwidth (ie, the normal bandwidth), the communication distance is far, and the analog transmission uses the loop filter of the normal bandwidth.
  • FIG. 3 is a schematic flowchart of a specific implementation manner of the loop filter bandwidth control method of FIG. 2, as shown in FIG. The first communication terminal performs the following steps:
  • Step 340 Power on.
  • the first communication terminal performs step 301 after being powered on.
  • Step 301 Switch the channel and in the receiving state, the loop filter locks the second signal bandwidth to obtain the signal strength of the communication system. That is, in the state in which the first communication terminal receives the signal, the current bandwidth of the loop filter is a normal bandwidth, and at this time, the current RSSI value and the current bandwidth are acquired.
  • Step 302 Determine whether the signal strength is greater than an intensity preset threshold.
  • step 303 is performed. If the signal strength is not greater than the intensity preset threshold, step 321 is performed.
  • the intensity preset threshold is a signal strength threshold for no whistling between the communication systems, that is, if the signal strength is greater than the intensity preset threshold, the communication systems may interfere with each other to cause whistling.
  • Step 303 The first communication terminal performs a step of switching to the first signal bandwidth.
  • the distance between the two communication systems is very close, and the anti-interference ability needs to be improved.
  • the current signal bandwidth of the loop filter is reduced from the second signal bandwidth to the first signal bandwidth, the phase noise is correspondingly improved, the corresponding adjacent channel selectivity and blocking performance are improved, and the anti-interference performance is improved.
  • Step 304 Determine whether the signal strength is greater than an intensity preset threshold.
  • step 305 is performed. If the signal strength is not greater than the intensity preset threshold, step 311 is performed.
  • Step 305 Maintain the first signal bandwidth.
  • the loop filter is maintained at the first signal bandwidth and the interference immunity of the communication system can be maintained.
  • Step 311 Switch to the second signal bandwidth.
  • step 302 is repeated to determine the signal strength to achieve the purpose of dynamically adjusting the signal bandwidth of the loop filter, and improving the anti-interference capability of the communication.
  • Step 321 Maintain the second signal bandwidth.
  • the RSSI value is not greater than the strength preset threshold n, indicating that the distance between the two communication systems is very long, and then the loop filter bandwidth is kept unchanged for the second signal bandwidth.
  • step 306 is performed to switch channels.
  • the state of the communication system is switched to the state in step 301 by switching channels.
  • FIG. 4 is a schematic flow chart of a second embodiment of a loop filter bandwidth control method of the present application.
  • the method for controlling the bandwidth of the loop filter of this embodiment includes the following steps:
  • the first communication terminal determines a communication mode with the second communication terminal to be communicated, and determines a signal bandwidth of the current call loop filter according to the communication mode.
  • the first communication terminal includes a smart phone, a tablet computer, a smart TV, and other smart devices, such as any one of smart watches
  • the second communication terminal includes a smart phone, a tablet computer, a smart TV, a communication base station, and other smart devices.
  • the first communication terminal and the second communication terminal each include a loop filter, and the bandwidth of the loop filter includes a first signal bandwidth, a second signal bandwidth, and a third signal bandwidth, the first signal bandwidth is a narrow bandwidth, and the second signal is The normal bandwidth, the third signal bandwidth is a wide bandwidth, and the communication terminal can control the bandwidth of the loop filter to switch between the first signal bandwidth, the second signal bandwidth, and the third signal bandwidth.
  • the signal strength passes the RSSI value (Received Signal Strength) Indicator) indicates that the RSSI value is the strength indication value of the received signal, and its implementation is performed after the reverse channel baseband reception filter.
  • RSSI value Receiveived Signal Strength
  • the RSSI value is the strength indication value of the received signal
  • the communication mode includes a digital mode and an analog mode.
  • ACP adjacent channel power
  • ACP adjacent channel power
  • ACP is greatly affected by the bandwidth of the loop filter.
  • S402 Establish communication with the second communication terminal according to the signal bandwidth, so that the second communication terminal determines whether the signal strength of the current communication is greater than an intensity preset threshold, and reduces the loop filter when the signal strength is greater than the intensity preset threshold. Current signal bandwidth.
  • FIG. 5 is a schematic flow chart of another specific implementation manner of a method for controlling a bandwidth of a loop filter of the present application.
  • the first communication terminal performs the following steps:
  • Step 540 Power on.
  • the first communication terminal performs step 501 after being powered on.
  • the steps in the subsequent receiving state are similar to the steps in FIG. 3, and the details are not described herein again.
  • step 505 or step 521 When the first communication terminal performs step 505 or step 521, it switches to the transmitting state. Before the first communication terminal switches from the receiving state to the transmitting state, it is necessary to determine the current signal bandwidth of the loop filter, and determine the next step according to the current signal bandwidth. If the first communication terminal turns on the transmission if the signal bandwidth of the loop filter is the second signal bandwidth, then step 522 is performed to transmit the signal. If the first communication terminal turns on the transmission if the signal bandwidth of the loop filter is the first signal bandwidth, the first communication terminal performs step 512: transmitting the signal.
  • Step 522 transmitting a signal. That is, the first communication terminal turns on the transmission if the signal bandwidth of the loop filter is the second signal bandwidth.
  • Step 523 Determine whether the current transmission system is an analog mode or a digital mode.
  • step 524 switching to the third signal bandwidth. If the pre-launch mode is the analog mode, step 525 is performed: switching to the first signal bandwidth.
  • Step 524 Switch to the third signal bandwidth.
  • the ACP Since the current transmission system is in the digital mode, the ACP is less affected by the bandwidth of the loop filter, and the wider the loop, the smaller the bit error rate and the farther the communication distance. Therefore, increasing the signal bandwidth of the loop filter to the third signal bandwidth can effectively reduce the bit error rate, improve the communication distance, and improve the performance of the communication system.
  • Step 525 Switch to the first signal bandwidth.
  • ACP is greatly affected by the bandwidth of the loop filter.
  • the communication system switches from the receiving state to the transmitting state when the loop filter bandwidth is the second signal bandwidth, and the loop filter bandwidth needs to be reduced to the first signal bandwidth, which can reduce the impact of the ACP and improve the performance of the communication system.
  • the analog transmission can also use a normal loop filter.
  • Step 512 Transmitting a signal. That is, the first signal bandwidth is maintained to transmit signals through the analog mode.
  • Step 525 Switch to the first signal bandwidth.
  • the communication system since the communication system switches from the receiving state to the transmitting state when the loop filter bandwidth is the first signal bandwidth, the transmitting distance is very close. At this time, the first signal bandwidth is maintained to transmit signals in the analog mode to improve the ACP performance and reduce the interference of the first communication terminal to the outside.
  • step 526 is executed according to the control instruction: the transmission is turned off. That is, the first communication terminal turns off the transmitting state, and the second communication terminal turns on the receiving state to continue to perform step 501.
  • the present application dynamically configures the bandwidth of the loop filter according to the transmission and reception state of the loop filter, the working system, the signal strength RSSI value, and the current bandwidth, and can dynamically configure the bandwidth of the loop filter and improve the bandwidth.
  • the performance of the communication terminal improves the anti-interference ability of the communication.
  • FIG. 6 is a schematic structural diagram of a first embodiment of a communication terminal according to the present application.
  • the communication terminal of the present embodiment is a first communication terminal for communicating with the second communication terminal.
  • the first communication terminal 60 includes: a communication circuit 63, a memory 61 and a processor 62; the communication circuit 63 is configured to transmit an instruction; The computer program executed by the storage processor 62 and the intermediate data generated when the computer program is executed; when the processor 62 executes the computer program, the control method of the loop filter bandwidth of any of the following is implemented.
  • the first communication terminal 60 includes a smart phone, a tablet computer, a smart TV, and other smart devices, such as any one of smart watches, and the second communication terminal includes a smart phone, a tablet computer, a smart TV, a communication base station, and other smart devices. , not limited here.
  • the first communication terminal 60 and the second communication terminal each include a loop filter, and the bandwidth of the loop filter includes a first signal bandwidth, a second signal bandwidth, and a third signal bandwidth, the first signal bandwidth is a narrow bandwidth, and the second signal is For normal bandwidth, the third signal bandwidth is a wide bandwidth, and the communication terminal can control the bandwidth of the loop filter to switch between the first signal bandwidth, the second signal bandwidth, and the third signal bandwidth.
  • the signal strength passes the RSSI value (Received Signal Strength) Indicator) indicates that the RSSI value is the strength indication value of the received signal, and its implementation is performed after the reverse channel baseband reception filter.
  • RSSI value Receiveived Signal Strength
  • the RSSI value is the strength indication value of the received signal
  • processor 62 performs the following steps:
  • Step 340 Power on.
  • the first communication terminal 60 performs step 301 after powering on.
  • Step 301 The processor 62 switches the channel and the loop filter locks the second signal bandwidth when the communication circuit 63 is in the receiving state, and acquires the signal strength of the communication system. That is, the processor 62 is in the state where the communication circuit 63 is in the received signal, and the current bandwidth of the loop filter is the normal bandwidth. At this time, the processor 62 acquires the current RSSI value and the current bandwidth.
  • Step 302 The processor 62 determines whether the signal strength is greater than an intensity preset threshold.
  • the intensity preset threshold is a signal strength threshold for no whistling between the communication systems, that is, if the signal strength is greater than the intensity preset threshold, the communication systems may interfere with each other to cause whistling.
  • Step 303 The first communication terminal performs a step of switching to the first signal bandwidth.
  • the processor 62 reduces the current signal bandwidth of the loop filter from the second signal bandwidth to the first signal bandwidth, and the phase noise is correspondingly improved, the corresponding adjacent channel selectivity and blocking performance are improved, and the anti-interference performance is improved. .
  • Step 304 Determine whether the signal strength is greater than an intensity preset threshold.
  • processor 62 The process of the processor 62 is the same as that of step 302, and details are not described herein again.
  • processor 62 performs step 305. If the signal strength is not greater than the intensity preset threshold, processor 62 performs step 311.
  • Step 305 Maintain the first signal bandwidth.
  • the loop filter is maintained at the first signal bandwidth and the interference immunity of the communication system can be maintained.
  • Step 311 Switch to the second signal bandwidth.
  • the processor 62 repeats the step 302 to determine the signal strength to achieve the purpose of dynamically adjusting the signal bandwidth of the loop filter, and improving the anti-interference capability of the communication.
  • Step 321 Maintain the second signal bandwidth.
  • the RSSI value is not greater than the strength preset threshold n, indicating that the distance between the two communication systems is very long, and then the loop filter bandwidth is kept unchanged for the second signal bandwidth.
  • step 306 is performed to switch channels.
  • the state of the communication system is switched to the state in step 301 by switching channels.
  • the present application dynamically configures the bandwidth of the loop filter according to the transmission and reception state of the loop filter, the working system, the signal strength RSSI value, and the current bandwidth, and can dynamically configure the bandwidth of the loop filter and improve the bandwidth.
  • the performance of the communication terminal improves the anti-interference ability of the communication.
  • FIG. 7 is a schematic structural diagram of a second embodiment of a communication terminal according to the present application.
  • the communication terminal is a first communication terminal for communicating with the second communication terminal.
  • the first communication terminal 70 includes: a communication circuit 73, a memory 71, and a processor 72; the communication circuit 73 is for transmitting instructions; and the memory 71 is for storing a computer program executed by the processor 72 and intermediate data generated when the computer program is executed;
  • the processor 72 executes a computer program, a method of controlling the loop filter bandwidth of any of the following is implemented.
  • the first communication terminal 70 includes a smart phone, a tablet computer, a smart TV, and other smart devices, such as any one of smart watches, and the second communication terminal includes a smart phone, a tablet computer, a smart TV, a communication base station, and other smart devices. , not limited here.
  • the first communication terminal 70 and the second communication terminal each include a loop filter, and the bandwidth of the loop filter includes a first signal bandwidth, a second signal bandwidth, and a third signal bandwidth, the first signal bandwidth is a narrow bandwidth, and the second signal is For normal bandwidth, the third signal bandwidth is a wide bandwidth, and the communication terminal can control the bandwidth of the loop filter to switch between the first signal bandwidth, the second signal bandwidth, and the third signal bandwidth.
  • the signal strength passes the RSSI value (Received Signal Strength) Indicator) indicates that the RSSI value is the strength indication value of the received signal, and its implementation is performed after the reverse channel baseband reception filter.
  • RSSI value Receiveived Signal Strength
  • the RSSI value is the strength indication value of the received signal
  • the processor 72 acquires a communication mode in which the first communication terminal determines the second communication terminal to be communicated, and determines a signal bandwidth of the current call loop filter according to the communication mode.
  • the processor 72 establishes communication between the first communication terminal 70 and the second communication terminal according to the signal bandwidth, so that the second communication terminal determines whether the signal strength of the current communication is greater than an intensity preset threshold, and when the signal strength is greater than the intensity preset threshold. , reducing the current signal bandwidth of the loop filter.
  • the present application dynamically configures the bandwidth of the loop filter according to the transmission and reception state of the loop filter, the working system, the signal strength RSSI value, and the current bandwidth, and can dynamically configure the bandwidth of the loop filter and improve the bandwidth.
  • the performance of the communication terminal improves the anti-interference ability of the communication.
  • FIG. 8 is a schematic structural diagram of a third embodiment of a communication terminal according to the present application.
  • the communication terminal of the present embodiment is a first communication terminal 80.
  • the first communication terminal 80 includes a receiver 81, a detector 82, a determination module 83, and a regulator 84.
  • the receiver 81 is configured to receive signals from other communication terminals;
  • the detector 82 is configured to detect signal strengths of signals from other communication terminals;
  • the determination module 83 is configured to determine whether the signal strength is greater than an intensity preset threshold;
  • the regulator 84 is configured to When the intensity is greater than the intensity preset threshold, the current signal bandwidth of the loop filter of the first communication terminal 80 is reduced.
  • the first communication terminal 80 implements the above-described control method of the loop filter bandwidth.
  • FIG. 9 is a schematic structural diagram of a fourth embodiment of a communication terminal according to the present application.
  • the communication terminal of the present embodiment is a first communication terminal 90.
  • the first communication terminal 90 includes a receiver 91, a detector 92, a determination module 93, a regulator 94, a transmitter 95, and a determination module 96.
  • the receiver 91 is configured to receive signals from other communication terminals; the detector 92 is configured to detect signal strengths of signals from other communication terminals; the determination module 93 is configured to determine whether the signal strength is greater than an intensity preset threshold; the regulator 94 is used to signal When the intensity is greater than the intensity preset threshold, the current signal bandwidth of the loop filter of the first communication terminal 90 is reduced; the transmitter 95 is configured to send signals to other communication terminals; and the determining module 96 is configured to when the first communication terminal 90 is to When the other communication terminal transmits a signal, the signal bandwidth of the loop filter used by the first communication terminal 90 to transmit signals to other communication terminals is determined according to the current signal bandwidth of the loop filter of the first communication terminal 90.
  • the first communication terminal 90 implements the above-described control method of the loop filter bandwidth.
  • FIG. 10 is an experimental data table of an embodiment of a loop filter bandwidth control method according to the present application.
  • the loop bandwidth is changed by changing the configuration of the pump current, which significantly improves the howling of close-range calls.
  • the howling problem can be optimized from 1.5-2 meters to less than 1 meter.
  • TX The FSK Err is better and can improve the communication distance of more than 100 meters.
  • the present application dynamically configures the bandwidth of the loop filter according to the transmission and reception state of the loop filter, the working system, the signal strength RSSI value, and the current bandwidth, and can dynamically configure the bandwidth of the loop filter and improve the bandwidth.
  • the performance of the communication terminal improves the anti-interference ability of the communication.
  • the disclosed method and apparatus may be implemented in other manners.
  • the device implementations described above are merely illustrative.
  • the division of modules or units is only one logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • An integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, can be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the various embodiments of the present application.

Abstract

La présente invention concerne un procédé et un appareil de contrôle de la largeur de bande d'un filtre de boucle. Ledit procédé est appliqué à un premier terminal de communication et consiste à : recevoir un signal, d'un second terminal de communication ; détecter l'intensité de signal d'un signal provenant du second terminal de communication ; déterminer si l'intensité du signal est supérieure à un seuil d'intensité prédéfini ; et si l'intensité de signal est supérieure au seuil d'intensité prédéfini, réduire une largeur de bande de signal actuelle du filtre de boucle du premier terminal de communication à une première largeur de bande de signal. Selon la présente invention, la largeur de bande du filtre de boucle est configurée de manière dynamique en fonction de l'état de transmission et de réception, de la norme de travail, de la valeur RSSI d'intensité de signal, de la largeur de bande actuelle, et similaire, du filtre de boucle. La largeur de bande du filtre de boucle peut ainsi être configurée de manière dynamique, ce qui améliore les performances du terminal de communication et la capacité antibrouillage pour une communication.
PCT/CN2018/073663 2018-01-22 2018-01-22 Procédé et dispositif de contrôle de la largeur de bande d'un filtre de boucle WO2019140698A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060109939A1 (en) * 2004-11-19 2006-05-25 Steven Ciccarelli Noise reduction filtering in a wireless communication system
CN101048940A (zh) * 2004-10-26 2007-10-03 皇家飞利浦电子股份有限公司 使滤波器适配检测到的干扰水平
WO2011060194A1 (fr) * 2009-11-11 2011-05-19 Maxlinear, Inc. Mécanisme de commande dynamique de la bande passante pour une boucle à verrouillage de phase (pll) frac-n d'un récepteur
US20110151807A1 (en) * 2009-12-17 2011-06-23 Electronics And Telecommunications Research Institute Phase modulation apparatus and method
CN103138753A (zh) * 2011-11-23 2013-06-05 联想(北京)有限公司 调节装置、锁相环、电子设备、带宽调整方法及装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101048940A (zh) * 2004-10-26 2007-10-03 皇家飞利浦电子股份有限公司 使滤波器适配检测到的干扰水平
US20060109939A1 (en) * 2004-11-19 2006-05-25 Steven Ciccarelli Noise reduction filtering in a wireless communication system
WO2011060194A1 (fr) * 2009-11-11 2011-05-19 Maxlinear, Inc. Mécanisme de commande dynamique de la bande passante pour une boucle à verrouillage de phase (pll) frac-n d'un récepteur
US20110151807A1 (en) * 2009-12-17 2011-06-23 Electronics And Telecommunications Research Institute Phase modulation apparatus and method
CN103138753A (zh) * 2011-11-23 2013-06-05 联想(北京)有限公司 调节装置、锁相环、电子设备、带宽调整方法及装置

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