CN113676925A - Signal processing method, terminal and storage medium - Google Patents

Abstract

The embodiment of the present application discloses a signal processing method, terminal and storage medium. In addition to receiving signals in the 336-344M frequency band, the 340M broadband terminal can also receive signals in the 351-366M frequency band of the PDT. When receiving the PDT uplink working frequency band When the signal strength of the PDT-based uplink working frequency band and the downlink working frequency band meet the preset conditions, limit the maximum transmit power of the 340M broadband terminal and/or preferentially use the frequency band far away from the PDT working frequency band to send uplink data, so as to effectively Suppress the interference of 340M broadband terminals to PDT terminals.

Description

Signal processing method, terminal and storage medium

technical field

The present application relates to the technical field of signal processing, and more particularly, to a signal processing method, terminal and storage medium.

Background technique

351-366M is a police digital trunking standard (Public Digital Trunking, PDT) narrow-band digital trunking private network, dedicated to public security and police affairs, with wide coverage, large-area system, and low cost; 336-344M spectrum is dedicated to mobile wireless video transmission , Among them, the 336-340M frequency band is preferentially used by the public security, and the 336-344M frequency band is the 340M broadband system (B-PDT) spectrum.

When the PDT terminal is located at the edge of the coverage of the PDT base station and the distance between the 340M broadband terminal and the PDT terminal is very close, the adjacent channel leakage signal of the 340M broadband terminal may suppress the downlink signal of the relatively weak PDT terminal, resulting in poor voice quality of the PDT terminal. damaged or unable to access the PDT network.

At present, in order to solve the above problems, the current method is to improve the performance of the RF analog filter of the 340M broadband system, so that the out-of-band suppression performance of the RF analog filter is better. large, the cost increases.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a signal processing method, terminal and storage medium to overcome the above problems or at least partially solve the above problems.

To achieve the above purpose, the application provides the following technical solutions:

A signal processing method, applied to a 340M broadband terminal, the method comprising:

Receive the uplink working frequency band signal and the downlink working frequency band signal of the police digital trunking standard PDT;

Detecting the first signal strength of the uplink working frequency band and the second signal strength of the downlink working frequency band of the PDT;

If the first signal strength and the second signal strength meet preset conditions, limit the maximum transmit power of the 340M broadband terminal and/or preferentially use a frequency band far from the PDT working frequency band to send uplink data.

In the above method, preferably, the first signal strength and the second signal strength satisfying a preset condition include:

The first signal strength is greater than a first threshold, and the second signal strength is less than a second threshold.

In the above method, preferably, the limitation of the maximum transmit power of the 340M broadband terminal and/or the preferential use of a frequency band far away from the PDT working frequency band to send uplink data includes:

sending a measurement report to a 340M broadband base station, where the measurement report carries identification information used to identify that the first signal strength and the second signal strength meet preset conditions;

Receive control information sent by the 340M broadband base station, and based on the control information, limit the maximum transmit power of the 340M broadband terminal and/or preferentially use a frequency band far from the PDT working frequency band to send uplink data.

In the above method, preferably, the limiting the maximum transmit power of the 340M broadband terminal includes:

According to different modulation modes in which the 340M broadband terminal is scheduled by the 340M broadband base station, the maximum transmit power of the 340M broadband terminal is different.

In the above method, preferably, the modulation modes used by the 340M broadband base station to schedule the 340M broadband terminal include at least the following three: quadrature phase shift keying QPSK, 16 quadrature amplitude and phase modulation 16QAM, and 64 quadrature amplitude and phase modulation 64QAM;

When the modulation method is QPSK, the maximum transmit power of the 340M broadband terminal is greater than the maximum transmit power of the 340M broadband terminal when the modulation method is 16QAM;

When the modulation mode is 16QAM, the maximum transmit power of the 340M broadband terminal is greater than the maximum transmit power of the 340M broadband terminal when the modulation mode is 64QAM.

A signal processing method, applied to a 340M broadband base station, the method comprising:

Receive the signal strength measurement report of the PDT uplink working frequency band and the downlink working frequency band reported by the 340M broadband terminal;

Send control information to the 340M broadband terminal according to the measurement report, so as to limit the maximum transmit power of the 340M broadband terminal and/or schedule the 340M broadband terminal to use a frequency band far from the PDT working frequency band to send data.

In the above method, preferably, the sending control information to the 340M broadband terminal according to the measurement report includes:

Parse the measurement report, and make a decision to adjust the 340M broadband terminal when the signal strength of the PDT uplink operating frequency band is greater than the first threshold and the PDT downlink operating frequency band signal is less than the second threshold, and report to the 340M The broadband terminal sends the corresponding control information;

The decision includes limiting the maximum transmit power of the 340M broadband terminal and/or scheduling the 340M broadband terminal to preferentially use a frequency band far from the PDT working frequency band to send uplink data.

A communication system, comprising: a 340M broadband terminal and a 340M broadband base station, wherein,

The 340M broadband terminal is used to report the signal strength measurement report of the PDT uplink working frequency band and the downlink working frequency band to the 340M broadband base station;

The 340M broadband base station is configured to send control information to the 340M broadband terminal according to the measurement report, so as to limit the maximum transmit power of the 340M broadband terminal and/or schedule the 340M broadband terminal to use the 340M broadband terminal away from the PDT working frequency band. frequency band to send data.

A 340M broadband terminal, comprising: a radio frequency circuit, a memory and a processor;

The radio frequency circuit is used for sending and receiving signals in the 336-344M frequency band, and receiving the uplink working frequency band signal and the downlink working frequency band signal of the police digital trunking standard PDT;

the memory for storing programs;

The processor, for executing the program, implements the following steps:

Detecting the first signal strength of the uplink working frequency band and the second signal strength of the downlink working frequency band of the PDT;

If the first signal strength and the second signal strength meet preset conditions, limit the maximum transmit power of the 340M broadband terminal and/or preferentially use a frequency band far from the PDT working frequency band to send uplink data.

In the above-mentioned terminal, preferably, the first signal strength and the second signal strength satisfying preset conditions include:

The first signal strength is greater than a first threshold, and the second signal strength is less than a second threshold.

For the above terminal, preferably, when the processor limits the maximum transmit power of the 340M broadband terminal and/or preferentially uses a frequency band far away from the PDT working frequency band to send uplink data, it is specifically used for:

sending a measurement report to a 340M broadband base station, where the measurement report carries identification information used to identify that the first signal strength and the second signal strength meet preset conditions;

Receive control information sent by the 340M broadband base station, and based on the control information, limit the maximum transmit power of the 340M broadband terminal and/or preferentially use a frequency band far from the PDT working frequency band to send uplink data.

In the above terminal, preferably, when the processor limits the maximum transmit power of the 340M broadband terminal, it is specifically used for:

According to different modulation modes in which the 340M broadband terminal is scheduled by the 340M broadband base station, the maximum transmit power of the 340M broadband terminal is different.

For the above-mentioned terminal, preferably, the modulation modes used by the 340M broadband base station to schedule the 340M broadband terminal include at least the following three types: quadrature phase shift keying QPSK, 16 quadrature amplitude-phase modulation 16QAM, and 64 quadrature amplitude-phase modulation 64QAM;

When the modulation method is QPSK, the maximum transmit power of the 340M broadband terminal is greater than the maximum transmit power of the 340M broadband terminal when the modulation method is 16QAM;

When the modulation mode is 16QAM, the maximum transmit power of the 340M broadband terminal is greater than the maximum transmit power of the 340M broadband terminal when the modulation mode is 64QAM.

A readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements each step of the signal processing method described in any one of the above.

It can be seen from the above solutions that in the signal processing method, terminal and storage medium provided by this application, in addition to receiving signals in the 336-344M frequency band, the 340M broadband terminal can also receive signals in the 351-366M frequency band of the PDT. When the uplink working frequency band and the downlink working frequency band signal, the signal strength of the PDT-based uplink working frequency band and the downlink working frequency band meet the preset conditions, limit the maximum transmit power of the 340M broadband terminal and/or preferentially use the frequency band far from the PDT working frequency band to send uplink data , so as to effectively suppress the interference of the 340M broadband terminal to the PDT terminal.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is an example diagram of an application scenario of a 340M broadband terminal and a PDT terminal provided in the prior art;

FIG. 2 is an exemplary diagram of an application scenario of a 340M broadband terminal and a PDT terminal provided by an embodiment of the present application;

3 is a flowchart of an implementation of a signal processing method provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a 340M broadband terminal provided by an embodiment of the present application;

FIG. 5 is another implementation flowchart of the signal processing method provided by the embodiment of the present application.

The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims and the above-mentioned drawings are used to distinguish similar parts and not necessarily to describe a particular order or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstances so that the embodiments of the application described herein can be practiced in sequences other than those illustrated herein.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1 , it is an example diagram of an application scenario of a 340M broadband terminal and a PDT terminal in the prior art. In this example, the 340M broadband terminal occupies the 336-344M frequency band to send data, and the out-of-band suppression of the power amplifier of the 340M broadband terminal at 351MHz is ≥60dB. Due to the limited size, the 340M broadband terminal cannot apply an analog filter with a higher degree of out-of-band suppression. Therefore, when the PDT terminal is at the edge of the PDT base station coverage, and the 340M broadband terminal is very close to the PDT terminal, the The adjacent channel leakage signal may suppress the downlink signal of the relatively weak PDT terminal, resulting in the loss of voice quality of the PDT terminal or the inability to access the PDT network.

Based on the above problems, the basic idea of the solution provided by this application is: the 340M broadband terminal monitors whether there is a PDT terminal nearby, and whether the PDT terminal is at the edge position covered by the PDT base station, if there is a PDT terminal near the 340M broadband terminal, and the PDT If the terminal is located at the edge of the coverage of the PDT base station, the maximum transmit power of the terminal is limited, and/or the frequency band far from the PDT operating frequency band is preferentially used to send uplink data to the 340M broadband base station, thereby suppressing the interference of the 340M broadband terminal to the PDT terminal. .

Based on the above basic idea, please refer to FIG. 2 and FIG. 3 . FIG. 2 is an example diagram of an application scenario of a 340M broadband terminal and a PDT terminal provided by an embodiment of the present application, and FIG. 3 is a schematic diagram of a signal processing method provided by an embodiment of the present application. An implementation flowchart. The signal processing method provided by the embodiment of the present application is applied to a 340M broadband terminal, which may specifically include:

Step S31: Receive the uplink working frequency band signal and the downlink working frequency band signal of the police digital trunking standard PDT.

In the embodiment of the present application, the 340M broadband terminal can not only receive and transmit signals in the 336-344M frequency band, but also receive the signals in the 351-366M frequency band of the PDT.

When the 340M broadband terminal is located within the signal coverage of the PDT base station and there is a PDT terminal near the 340M broadband terminal, the 340M broadband terminal can receive the uplink working frequency band signal of the police digital trunking standard PDT (that is, the signal sent by the PDT terminal to the PDT base station) ) and the downlink working frequency band signal (that is, the signal sent by the PDT base station to the PDT terminal).

Step S32: Detect the signal strength of the uplink working frequency band of the PDT (denoted as the first signal strength for ease of description) and the signal strength of the downlink working frequency band (denoted as the second signal strength for ease of description).

Step S33: If the first signal strength and the second signal strength meet the preset conditions, limit the maximum transmit power of the 340M broadband terminal and/or preferentially use a frequency band far from the PDT working frequency band to send uplink data.

In this embodiment, the signal strength of the uplink and downlink working frequency bands of the PDT received and detected by the 340M broadband terminal may be periodic or event-triggered, which does not affect the implementation of the technical solution of the present invention, so it is not limited here.

If the first signal strength and the second signal strength meet the preset conditions, it means that there is a PDT terminal near the 340M broadband terminal, and the PDT terminal is at the edge of the signal coverage area of the PDT base station. At this time, the maximum transmit power of the 340M broadband terminal can be limited. , or, the 340M broadband terminal preferentially uses the frequency band far away from the PDT working frequency band to send uplink data to the 340M broadband base station, or limits the maximum transmit power of the 340M broadband terminal and preferentially uses the frequency band far away from the PDT working frequency band to send uplink data to the 340M broadband base station.

Among them, limiting the maximum transmit power of the 340M broadband terminal refers to limiting the maximum transmit power of the 340M broadband terminal not to exceed the power threshold, which is the maximum value that can ensure that the communication quality of the PDT terminal will not be affected. The power threshold can be obtained through laboratory simulation, or obtained through field measurement.

Preferentially using the frequency band far from the PDT working frequency band to send uplink data means that in the available frequency bands of the 336-344M frequency band, the frequency band close to 336M is preferentially used to send the uplink data, so that the actual working frequency band of the 340M broadband terminal can be isolated from the PDT working frequency band as far as possible. big.

Optionally, a specific implementation manner of limiting the maximum transmit power of the 340M broadband terminal and/or preferentially using a frequency band far away from the PDT working frequency band to send uplink data may be:

The 340M broadband terminal determines the maximum transmission power (for the convenience of description, denoted as the target maximum transmission power) and/or the working frequency band to be used preferentially (for the convenience of description, denoted as the target working frequency band), and then sends a resource application to the 340M broadband base station. The application carries the target maximum transmit power and the target working frequency band. If the 340M broadband base station feeds back the confirmation information after receiving the resource application, the maximum transmit power of the 340M broadband terminal and/or the preferred working frequency band will be adjusted to the target maximum transmit power and/or target operating frequency band. If the 340M broadband base station feeds back not the determination information but the scheduling instruction after receiving the resource application, then adjust the maximum transmit power and/or the preferentially used working frequency band of the 340M broadband terminal to the maximum transmit power indicated by the scheduling instruction and/or or working frequency.

According to the signal processing method provided in this application, the 340M broadband terminal can not only receive the signals in the 336-344M frequency band, but also receive the signals in the 351-366M frequency band of the PDT. The signal strength of the upstream working frequency band and the downstream working frequency band meet the preset conditions, limit the maximum transmit power of the 340M broadband terminal and/or preferentially use the frequency band far away from the PDT working frequency band to send uplink data, thereby effectively suppressing the interference of the 340M broadband terminal to the PDT terminal. . Based on the above solution, the hardware improvement of the 340M broadband terminal in this application is to enable the 340M broadband terminal to receive signals in the 351-366M frequency band of the PDT. This improvement can be achieved by increasing the filter passband on the signal receiving side, and this realization In this way, the volume of the 340M broadband terminal can hardly be increased.

In an optional embodiment, the above-mentioned first signal strength and second signal strength satisfying a preset condition may include:

The first signal strength is greater than the first threshold, and the second signal strength is less than the second threshold. Typically, the second threshold is smaller than the first threshold.

The first signal strength is greater than the first threshold, indicating that there is a PDT terminal near the 340M broadband terminal, and the second signal strength is less than the second threshold, indicating that the PDT terminal is at the edge of the signal coverage area of the PDT base station.

In an optional embodiment, an implementation manner of limiting the maximum transmit power of the 340M broadband terminal and/or preferentially using a frequency band far away from the PDT working frequency band to send uplink data may be:

A measurement report is sent to the 340M broadband base station, where the measurement report carries identification information, where the identification information is used to identify that the above-mentioned first signal strength and second signal strength meet preset conditions.

Receive control information sent by the 340M broadband base station, limit the maximum transmit power of the 340M broadband terminal based on the control information, and/or preferentially use a frequency band far from the PDT working frequency band to send uplink data.

That is to say, the maximum transmit power and working frequency band of the 340M broadband terminal are indicated by the 340M broadband base station scheduling.

Optionally, the 340M broadband terminal may send a measurement report to the 340M broadband base station only when the first signal strength and the second signal strength meet preset conditions.

or,

Regardless of whether the first signal strength and the second signal strength meet the preset conditions, the measurement report is periodically sent to the 340M broadband base station. At this time, the identification information in the measurement report is used to identify whether the first signal strength and the second signal strength meet the predetermined conditions. Set conditions; specifically, when the first signal strength and the second signal strength meet the preset conditions, the identification information in the measurement report is used to identify that the first signal strength and the second signal strength meet the preset conditions; when the first signal strength and the second signal strength meet the preset conditions; When the signal strength and the second signal strength do not meet the preset condition, the identification information in the measurement report is used to identify that the first signal strength and the second signal strength do not meet the preset condition.

Correspondingly, the 340M broadband base station only sends control information to the 340M broadband terminal when the first signal strength and the second signal strength meet the preset conditions, so as to limit the maximum transmit power of the 340M broadband terminal and/or preferentially use a frequency band far away from the PDT operating frequency. the frequency band to send uplink data. If the first signal strength and the second signal strength do not meet the preset conditions, the 340M broadband base station will not send control information to the 340M broadband terminal, that is, it will not limit the maximum transmit power of the 340M broadband terminal and/or preferentially use a frequency band far away from the PDT operating frequency. the frequency band to send uplink data.

In an optional embodiment, when the maximum transmit power of the 340M broadband terminal is limited above, the maximum transmit power of the 340M broadband terminal is different according to different modulation modes used by the 340M broadband base station to schedule the 340M broadband terminal.

Optionally, the modulation modes used by the 340M broadband base station to schedule the 340M broadband terminal may include at least the following three: quadrature phase shift keying QPSK, 16 quadrature amplitude and phase modulation 16QAM, and 64 quadrature amplitude and phase modulation 64QAM; wherein,

When the modulation method is QPSK, the maximum transmit power of the 340M broadband terminal is greater than the maximum transmit power of the 340M broadband terminal when the modulation method is 16QAM. Optionally, when the modulation method is QPSK, the maximum transmit power of the 340M broadband terminal is higher than that of the 340M broadband terminal when the modulation method is 16QAM. The maximum transmit power of the broadband terminal is 1db larger.

When the modulation method is 16QAM, the maximum transmit power of the 340M broadband terminal is greater than the maximum transmit power of the 340M broadband terminal when the modulation method is 64QAM. Optionally, when the modulation method is 16QAM, the maximum transmit power of the 340M broadband terminal is higher than that of the 340M broadband terminal when the modulation method is 64QAM. The maximum transmit power of the broadband terminal is 1.5db larger.

Corresponding to the method embodiment, the present application further provides a 340M broadband terminal. A schematic structural diagram of the 340M broadband terminal provided by the present application is shown in FIG. 4 , which may include:

RF circuit 41, memory 42, processor 43 and communication interface 44; wherein,

The processor 43, the communication interface 44, the memory 42 and the radio frequency circuit 41 communicate with each other through the communication bus;

Optionally, the communication interface 44 can be an interface of a communication module, such as an interface of a GSM module;

The processor 43 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

The radio frequency circuit 41 is used to send and receive signals in the 336-344M frequency band, and receive the uplink working frequency band signal and the downlink working frequency band signal of the police digital trunking standard PDT;

Memory 42, for storing programs; may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk memory.

The processor 43 is used for executing the program stored in the memory 42, and realizes the following steps:

Detecting the first signal strength of the uplink working frequency band and the second signal strength of the downlink working frequency band of the PDT;

If the first signal strength and the second signal strength meet preset conditions, limit the maximum transmit power of the 340M broadband terminal and/or preferentially use a frequency band far from the PDT working frequency band to send uplink data.

The 340M broadband terminal provided by this application can not only receive signals in the 336-344M frequency band, but also receive signals in the 351-366M frequency band of the PDT. The signal strength of the frequency band and the downlink working frequency band meet the preset conditions, limit the maximum transmit power of the 340M broadband terminal and/or preferentially use the frequency band far away from the PDT working frequency band to send uplink data, thereby effectively suppressing the interference of the 340M broadband terminal to the PDT terminal.

In an optional embodiment, the first signal strength and the second signal strength satisfying a preset condition include:

The first signal strength is greater than a first threshold, and the second signal strength is less than a second threshold.

In an optional embodiment, when the processor 43 limits the maximum transmit power of the 340M broadband terminal and/or preferentially uses a frequency band far from the PDT working frequency band to send uplink data, it is specifically used for:

sending a measurement report to a 340M broadband base station, where the measurement report carries identification information used to identify that the first signal strength and the second signal strength meet preset conditions;

Receive control information sent by the 340M broadband base station, and based on the control information, limit the maximum transmit power of the 340M broadband terminal and/or preferentially use a frequency band far from the PDT working frequency band to send uplink data.

Optionally, the processor 43 may send the measurement report to the 340M broadband base station only when the first signal strength and the second signal strength satisfy a preset condition.

or,

The processor 43 may periodically send a measurement report to the 340M broadband base station regardless of whether the first signal strength and the second signal strength meet the preset conditions. At this time, the identification information in the measurement report is used to identify the first signal strength and the second signal strength. Whether the intensity meets the preset conditions. Correspondingly, the 340M broadband base station only sends control information to the 340M broadband terminal when the first signal strength and the second signal strength meet the preset conditions, so as to limit the maximum transmit power of the 340M broadband terminal and/or preferentially use a frequency band far away from the PDT operating frequency. the frequency band to send uplink data.

In an optional embodiment, when the processor 43 limits the maximum transmit power of the 340M broadband terminal, it is specifically used for:

According to different modulation modes in which the 340M broadband terminal is scheduled by the 340M broadband base station, the maximum transmit power of the 340M broadband terminal is different.

In an optional embodiment, the modulation modes used by the 340M broadband base station to schedule the 340M broadband terminal include at least the following three: quadrature phase shift keying QPSK, 16 quadrature amplitude and phase modulation 16QAM, 64 quadrature amplitude and phase modulation modulation 64QAM;

When the modulation method is QPSK, the maximum transmit power of the 340M broadband terminal is greater than the maximum transmit power of the 340M broadband terminal when the modulation method is 16QAM;

When the modulation mode is 16QAM, the maximum transmit power of the 340M broadband terminal is greater than the maximum transmit power of the 340M broadband terminal when the modulation mode is 64QAM.

Based on the same technical idea as the above signal processing method, the embodiment of the present application provides another signal processing method. The signal processing method is applied to a 340M broadband base station. The implementation flowchart of the signal processing method is shown in FIG. 5 , which may include:

Step S51: Receive the signal strength measurement report of the PDT uplink working frequency band and the downlink working frequency band reported by the 340M broadband terminal.

The measurement report can be that the 340M broadband terminal receives the uplink working frequency band signal and the downlink working frequency band signal of the police digital trunking standard PDT, detects the first signal strength of the uplink working frequency band and the second signal strength of the downlink working frequency band of the PDT, and judges the first signal strength of the downlink working frequency band. It is sent to the 340M broadband base station after whether the first signal strength and the second signal strength meet the preset conditions.

Step S52: Send control information to the 340M broadband terminal according to the measurement report to limit the maximum transmit power of the 340M broadband terminal and/or schedule the 340M broadband terminal to use a frequency band far from the PDT working frequency band to send data.

The 340M broadband base station can send control information to the 340M broadband terminal when the measurement report identifies that the first signal strength and the second signal strength meet the preset conditions, to limit the maximum transmit power of the 340M broadband terminal and/or schedule the 340M broadband terminal to use it far away from the PDT. The frequency band of the working frequency band transmits data.

The signal processing method provided by the embodiment of the present application limits the maximum transmit power of the 340M broadband terminal according to the signal strength of the PDT uplink working frequency band and the downlink working frequency band reported by the 340M broadband terminal and/or schedules the 340M broadband terminal to use a frequency band far away from the PDT working frequency band for transmission. data, thereby effectively suppressing the interference of 340M broadband terminals to PDT terminals.

In an optional embodiment, an implementation manner of the above-mentioned sending control information to the 340M broadband terminal according to the measurement report may be:

Analyze the measurement report, when the signal strength of the PDT uplink working frequency band is greater than the first threshold, and the PDT downlink working frequency band signal is less than the second threshold, make a decision to adjust the 340M broadband terminal, and send the corresponding control information to the 340M broadband terminal;

The above decision includes limiting the maximum transmit power of the 340M broadband terminal and/or scheduling the 340M broadband terminal to preferentially use a frequency band far from the PDT working frequency band to send uplink data.

In an optional embodiment, when limiting the maximum transmit power of the 340M broadband terminal, it is specifically used for:

According to the different modulation modes of the 340M broadband base station scheduling 340M broadband terminals, the maximum transmit power of the 340M broadband terminals is different.

In an optional embodiment, the modulation modes used by the 340M broadband base station to schedule the 340M broadband terminal include at least the following three: quadrature phase shift keying QPSK, 16 quadrature amplitude and phase modulation 16QAM, and 64 quadrature amplitude and phase modulation 64QAM;

When the modulation method is QPSK, the maximum transmit power of the 340M broadband terminal is greater than the maximum transmit power of the 340M broadband terminal when the modulation method is 16QAM;

When the modulation method is 16QAM, the maximum transmit power of the 340M broadband terminal is greater than the maximum transmit power of the 340M broadband terminal when the modulation method is 64QAM.

An embodiment of the present application further provides a communication system, and the communication system may include: a 340M broadband terminal and a 340M broadband base station, wherein,

The 340M broadband terminal is used to report the signal strength measurement report of the PDT uplink working frequency band and the downlink working frequency band to the 340M broadband base station. For a specific implementation manner, reference may be made to the foregoing embodiments, which will not be repeated here.

The 340M broadband base station is used to send control information to the 340M broadband terminal according to the measurement report, so as to limit the maximum transmit power of the 340M broadband terminal and/or schedule the 340M broadband terminal to use a frequency band far from the PDT working frequency band to send data. For a specific implementation manner, reference may be made to the foregoing embodiments, which will not be repeated here.

Embodiments of the present application further provide a readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the following functions are implemented:

Receive the uplink working frequency band signal and the downlink working frequency band signal of the police digital trunking standard PDT; can receive the uplink working frequency band signal and the downlink working frequency band signal of the PDT through the radio frequency circuit of the 340M broadband terminal.

Detecting the first signal strength of the uplink working frequency band and the second signal strength of the downlink working frequency band of the PDT;

If the first signal strength and the second signal strength meet preset conditions, limit the maximum transmit power of the 340M broadband terminal and/or preferentially use a frequency band far from the PDT working frequency band to send uplink data.

Optionally, the refinement function and extension function of the program may refer to the above description.

The embodiment of the present application also provides another readable storage medium, on which a computer program is stored, and when the computer program is executed by the processor, the following functions are implemented:

Receive the signal strength measurement report of the PDT uplink working frequency band and the downlink working frequency band reported by the 340M broadband terminal.

Send control information to the 340M broadband terminal according to the measurement report to limit the maximum transmit power of the 340M broadband terminal and/or schedule the 340M broadband terminal to use a frequency band far from the PDT working frequency band to send data.

Optionally, the refinement function and extension function of the program may refer to the above description.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and 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 in this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

It should be understood that, in the embodiments of the present application, the rights, various embodiments, and features can be combined with each other, and the aforementioned technical problems can be solved.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, removable hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. a signal processing method, applied to 340M broadband terminal, is characterized in that, described method comprises: Receive the uplink working frequency band signal and the downlink working frequency band signal of the police digital trunking standard PDT; Detecting the first signal strength of the uplink working frequency band and the second signal strength of the downlink working frequency band of the PDT; If the first signal strength and the second signal strength meet preset conditions, limit the maximum transmit power of the 340M broadband terminal and/or preferentially use a frequency band far from the PDT working frequency band to send uplink data. 2 . The method according to claim 1 , wherein the first signal strength and the second signal strength satisfying a preset condition include: 2 . The first signal strength is greater than a first threshold, and the second signal strength is less than a second threshold. 3. The method according to claim 1, wherein the limiting the maximum transmit power of the 340M broadband terminal and/or preferentially using a frequency band far from the PDT operating frequency band to send uplink data, comprising: sending a measurement report to a 340M broadband base station, where the measurement report carries identification information used to identify that the first signal strength and the second signal strength meet preset conditions; Receive control information sent by the 340M broadband base station, and based on the control information, limit the maximum transmit power of the 340M broadband terminal and/or preferentially use a frequency band far from the PDT working frequency band to send uplink data. 4. The method according to claim 1, wherein the limiting the maximum transmit power of the 340M broadband terminal comprises: According to different modulation modes in which the 340M broadband terminal is scheduled by the 340M broadband base station, the maximum transmit power of the 340M broadband terminal is different. 5. The method according to claim 4, wherein the modulation modes used by the 340M broadband base station to schedule the 340M broadband terminal include at least the following three types: Quadrature Phase Shift Keying (QPSK), 16 Quadrature Amplitude Phase Modulation (16QAM) , 64 quadrature amplitude and phase modulation 64QAM; When the modulation method is QPSK, the maximum transmit power of the 340M broadband terminal is greater than the maximum transmit power of the 340M broadband terminal when the modulation method is 16QAM; When the modulation mode is 16QAM, the maximum transmit power of the 340M broadband terminal is greater than the maximum transmit power of the 340M broadband terminal when the modulation mode is 64QAM. 6. A signal processing method, applied to a 340M broadband base station, wherein the method comprises: Receive the signal strength measurement report of the PDT uplink working frequency band and the downlink working frequency band reported by the 340M broadband terminal; Send control information to the 340M broadband terminal according to the measurement report, so as to limit the maximum transmit power of the 340M broadband terminal and/or schedule the 340M broadband terminal to use a frequency band far from the PDT working frequency band to send data. 7. The method according to claim 6, wherein the sending control information to the 340M broadband terminal according to the measurement report comprises: Parse the measurement report, and make a decision to adjust the 340M broadband terminal when the signal strength of the PDT uplink operating frequency band is greater than the first threshold and the PDT downlink operating frequency band signal is less than the second threshold, and report to the 340M The broadband terminal sends corresponding control information; The decision includes limiting the maximum transmit power of the 340M broadband terminal and/or scheduling the 340M broadband terminal to preferentially use a frequency band far from the PDT working frequency band to send uplink data. 8. A communication system, comprising: a 340M broadband terminal and a 340M broadband base station, wherein, The 340M broadband terminal is used to report the signal strength measurement report of the PDT uplink working frequency band and the downlink working frequency band to the 340M broadband base station; The 340M broadband base station is configured to send control information to the 340M broadband terminal according to the measurement report, so as to limit the maximum transmit power of the 340M broadband terminal and/or schedule the 340M broadband terminal to use the 340M broadband terminal away from the PDT working frequency band. frequency band to send data. 9. A 340M broadband terminal, comprising: a radio frequency circuit, a memory and a processor; The radio frequency circuit is used for sending and receiving signals in the 336-344M frequency band, and receiving the uplink working frequency band signal and the downlink working frequency band signal of the police digital trunking standard PDT; the memory for storing programs; The processor, for executing the program, implements the following steps: Detecting the first signal strength of the uplink working frequency band and the second signal strength of the downlink working frequency band of the PDT; If the first signal strength and the second signal strength meet preset conditions, limit the maximum transmit power of the 340M broadband terminal and/or preferentially use a frequency band far from the PDT working frequency band to send uplink data. 10. A readable storage medium on which a computer program is stored, wherein when the computer program is executed by a processor, each step of the signal processing method according to any one of claims 1-5 is implemented .

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