Signal processing method, terminal and storage medium

Abstract

The embodiment of the present application discloses a signal processing method, a terminal and a 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 PDT. When the PDT uplink working frequency band and downlink working frequency band signals are received, based on the signal strength of the uplink working frequency band and the downlink working frequency band of PDT meeting the preset conditions, the maximum transmission power of the 340M broadband terminal is limited and / or the uplink data is preferentially sent using a frequency band far away from the PDT working frequency band, thereby effectively suppressing the interference of the 340M broadband terminal to the PDT terminal.

Description

Technical Field

[0001] The present application relates to the field of signal processing technology, and more specifically, to a signal processing method, a terminal and a storage medium. Background Art

[0002] 351~366M is the narrowband digital trunking private network of the police digital trunking standard (Public Digital Trunking, PDT), which is dedicated to public security police work and has the characteristics of wide coverage, large regional system and low cost; 336~344M spectrum is dedicated to mobile wireless video transmission, among which 336~340M frequency band is given priority to public security, and 336~344M frequency band is the 340M broadband system (B-PDT) spectrum.

[0003] 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 adjacent frequency leakage signal of the 340M broadband terminal may suppress the relatively weak downlink signal of the PDT terminal, resulting in impaired voice quality of the PDT terminal or inability to access the PDT network.

[0004] 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. However, improving the performance of the RF analog filter will cause the device to be larger in size and increase the cost. Summary of the invention

[0005] The purpose of the present application is to provide a signal processing method, a terminal and a storage medium to overcome the above problems or at least partially solve the above problems.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] A signal processing method, applied to a 340M broadband terminal, comprising:

[0008] Receive the uplink and downlink working frequency band signals of the police digital trunking standard PDT;

[0009] Detecting a first signal strength of an uplink operating frequency band and a second signal strength of a downlink operating frequency band of the PDT;

[0010] If the first signal strength and the second signal strength meet a preset condition, the maximum transmission power of the 340M broadband terminal is limited and / or a frequency band far away from the PDT working frequency band is preferentially used to send uplink data.

[0011] In the above method, preferably, the first signal strength and the second signal strength satisfying a preset condition include:

[0012] The first signal strength is greater than a first threshold, and the second signal strength is less than a second threshold.

[0013] In the above method, preferably, limiting the maximum transmission 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 includes:

[0014] Sending a measurement report to the 340M broadband base station, where the measurement report carries identification information for identifying that the first signal strength and the second signal strength meet a preset condition;

[0015] Receive control information sent by the 340M broadband base station, and based on the control information, limit the maximum transmission power of the 340M broadband terminal and / or give priority to using a frequency band far away from the PDT working frequency band to send uplink data.

[0016] In the above method, preferably, limiting the maximum transmission power of the 340M broadband terminal includes:

[0017] According to different modulation modes of the 340M broadband terminal scheduled by the 340M broadband base station, the maximum transmission power of the 340M broadband terminal is different.

[0018] In the above method, preferably, the modulation modes of the 340M broadband base station scheduling the 340M broadband terminal include at least the following three: quadrature phase shift keying QPSK, 16 quadrature amplitude-phase modulation 16QAM, and 64 quadrature amplitude-phase modulation 64QAM;

[0019] When the modulation mode is QPSK, the maximum transmission power of the 340M broadband terminal is greater than the maximum transmission power of the 340M broadband terminal when the modulation mode is 16QAM;

[0020] When the modulation mode is 16QAM, the maximum transmission power of the 340M broadband terminal is greater than the maximum transmission power of the 340M broadband terminal when the modulation mode is 64QAM.

[0021] A signal processing method is applied to a 340M broadband base station, the method comprising:

[0022] Receive the signal strength measurement report of the PDT uplink and downlink working frequency bands reported by the 340M broadband terminal;

[0023] Control information is sent to the 340M broadband terminal according to the measurement report to limit the maximum transmission power of the 340M broadband terminal and / or schedule the 340M broadband terminal to use a frequency band far away from the PDT working frequency band to send data.

[0024] In the above method, preferably, sending control information to the 340M broadband terminal according to the measurement report comprises:

[0025] Parse the measurement report, and when the signal strength of the PDT uplink working frequency band is greater than a first threshold and the signal strength of the PDT downlink working frequency band is less than a second threshold, make a decision to adjust the 340M broadband terminal, and send corresponding control information to the 340M broadband terminal;

[0026] The decision includes limiting the maximum transmission power of the 340M broadband terminal and / or scheduling the 340M broadband terminal to preferentially use a frequency band far away from the PDT working frequency band to send uplink data.

[0027] A communication system, comprising: a 340M broadband terminal and a 340M broadband base station, wherein:

[0028] 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;

[0029] The 340M broadband base station is used to send control information to the 340M broadband terminal according to the measurement report to limit the maximum transmission power of the 340M broadband terminal and / or schedule the 340M broadband terminal to use a frequency band away from the PDT working frequency band to send data.

[0030] A 340M broadband terminal, comprising: a radio frequency circuit, a memory and a processor;

[0031] The radio frequency circuit is used to send and receive signals in the 336-344M frequency band, and to receive uplink and downlink working frequency band signals of the police digital trunking standard PDT;

[0032] The memory is used to store programs;

[0033] The processor is used to execute the program to implement the following steps:

[0034] Detecting a first signal strength of an uplink operating frequency band and a second signal strength of a downlink operating frequency band of the PDT;

[0035] If the first signal strength and the second signal strength meet a preset condition, the maximum transmission power of the 340M broadband terminal is limited and / or a frequency band far away from the PDT working frequency band is preferentially used to send uplink data.

[0036] For the above terminal, preferably, the first signal strength and the second signal strength satisfying a preset condition include:

[0037] The first signal strength is greater than a first threshold, and the second signal strength is less than a second threshold.

[0038] In the above-mentioned terminal, preferably, when the processor limits the maximum transmission 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 to:

[0039] Sending a measurement report to the 340M broadband base station, where the measurement report carries identification information for identifying that the first signal strength and the second signal strength meet a preset condition;

[0040] Receive control information sent by the 340M broadband base station, and based on the control information, limit the maximum transmission power of the 340M broadband terminal and / or give priority to using a frequency band far away from the PDT working frequency band to send uplink data.

[0041] In the above terminal, preferably, when the processor limits the maximum transmission power of the 340M broadband terminal, it is specifically used to:

[0042] According to different modulation modes of the 340M broadband terminal scheduled by the 340M broadband base station, the maximum transmission power of the 340M broadband terminal is different.

[0043] For the above-mentioned terminal, preferably, the modulation modes of the 340M broadband base station scheduling the 340M broadband terminal include at least the following three: quadrature phase shift keying QPSK, 16 quadrature amplitude-phase modulation 16QAM, and 64 quadrature amplitude-phase modulation 64QAM;

[0044] When the modulation mode is QPSK, the maximum transmission power of the 340M broadband terminal is greater than the maximum transmission power of the 340M broadband terminal when the modulation mode is 16QAM;

[0045] When the modulation mode is 16QAM, the maximum transmission power of the 340M broadband terminal is greater than the maximum transmission power of the 340M broadband terminal when the modulation mode is 64QAM.

[0046] A readable storage medium stores a computer program thereon, and when the computer program is executed by a processor, the steps of the signal processing method described in any one of the above items are implemented.

[0047] It can be seen from the above scheme that the present application provides 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 PDT. When the PDT uplink working frequency band and downlink working frequency band signals are received, based on the signal strength of the uplink working frequency band and downlink working frequency band of PDT meeting the preset conditions, the maximum transmission power of the 340M broadband terminal is limited and / or the frequency band far away from the PDT working frequency band is preferentially used to send uplink data, thereby effectively suppressing the interference of the 340M broadband terminal to the PDT terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0049] Figure 1 This is an example diagram of an application scenario of a 340M broadband terminal and a PDT terminal provided in the prior art;

[0050] Figure 2 An example diagram of an application scenario of a 340M broadband terminal and a PDT terminal provided in an embodiment of the present application;

[0051] Figure 3 A flowchart of an implementation of the signal processing method provided in an embodiment of the present application;

[0052] Figure 4 A schematic diagram of the structure of a 340M broadband terminal provided in an embodiment of the present application;

[0053] Figure 5 Another implementation flowchart of the signal processing method provided in an embodiment of the present application.

[0054] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims and the above drawings are used to distinguish similar parts, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated herein. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] like Figure 1 As shown, it is an example diagram of the application scenario of 340M broadband terminal and 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 limitation of volume, the 340M broadband terminal cannot apply analog filters with higher 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 adjacent frequency leakage signal of the 340M broadband terminal may suppress the relatively weak downlink signal of the PDT terminal, resulting in the loss of voice quality of the PDT terminal or the inability to access the PDT network.

[0057] 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 of the coverage of the PDT base station. If it is detected that there is a PDT terminal near the 340M broadband terminal, and the PDT terminal is at the edge of the coverage of the PDT base station, its own maximum transmission power is limited, and / or, the frequency band far away from the PDT working 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.

[0058] Based on the above basic ideas, please refer to Figure 2 and Figure 3 , Figure 2 An example diagram of an application scenario of a 340M broadband terminal and a PDT terminal provided in an embodiment of the present application, Figure 3 This is a flow chart for implementing the signal processing method provided in the embodiment of the present application. The signal processing method provided in the embodiment of the present application is applied to a 340M broadband terminal, and may specifically include:

[0059] Step S31: receiving an uplink working frequency band signal and a downlink working frequency band signal of the police digital trunking standard PDT.

[0060] In the embodiment of the present application, the 340M broadband terminal can not only send and receive signals in the 336-344M frequency band, but also receive signals in the 351-366M frequency band of PDT.

[0061] When the 340M broadband terminal is 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 (i.e. the signal sent by the PDT terminal to the PDT base station) and the downlink working frequency band signal (i.e. the signal sent by the PDT base station to the PDT terminal) of the police digital trunking standard PDT.

[0062] Step S32: Detect the signal strength of the uplink working frequency band of the PDT (for the convenience of description, recorded as the first signal strength) and the signal strength of the downlink working frequency band (for the convenience of description, recorded as the second signal strength).

[0063] Step S33: If the first signal strength and the second signal strength meet the preset conditions, the maximum transmission power of the 340M broadband terminal is limited and / or a frequency band far away from the PDT working frequency band is preferentially used to send uplink data.

[0064] In this embodiment, the 340M broadband terminal receives and detects the signal strength of the uplink and downlink working frequency bands of the PDT periodically or event-triggered, which does not affect the implementation of the technical solution of the present invention and is not limited here.

[0065] 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 transmission power of the 340M broadband terminal can be limited, or the 340M broadband terminal preferentially uses a frequency band far away from the PDT working frequency band to send uplink data to the 340M broadband base station, or the maximum transmission power of the 340M broadband terminal is limited and the frequency band far away from the PDT working frequency band is preferentially used to send uplink data to the 340M broadband base station.

[0066] The limiting of the maximum transmission power of the 340M broadband terminal means limiting the maximum transmission power of the 340M broadband terminal to not exceed a power threshold, and the power threshold is a 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 field measurement.

[0067] Prioritizing the use of a frequency band far from the PDT working frequency band to send uplink data means that, among the available frequency bands of the 336-344M frequency band, the frequency band close to 336M is preferentially used to send uplink data, so that the isolation between the actual working frequency band of the 340M broadband terminal and the PDT working frequency band is as large as possible.

[0068] Optionally, a specific implementation of limiting the maximum transmit power of a 340M broadband terminal and / or preferentially using a frequency band away from a PDT working frequency band to send uplink data may be:

[0069] The 340M broadband terminal determines the maximum transmit power (for ease of description, recorded as the target maximum transmit power) and / or the priority working frequency band (for ease of description, recorded as the target working frequency band), and then sends a resource application to the 340M broadband base station, which carries the target maximum transmit power and the target working frequency band. If the 340M broadband base station feeds back confirmation information after receiving the resource application, the maximum transmit power and / or the priority working frequency band of the 340M broadband terminal are adjusted to the target maximum transmit power and / or the target working frequency band. If the 340M broadband base station feeds back a scheduling indication instead of confirmation information after receiving the resource application, the maximum transmit power and / or the priority working frequency band of the 340M broadband terminal are adjusted to the maximum transmit power and / or the working frequency band indicated by the scheduling indication.

[0070] The signal processing method provided by the present application is that the 340M broadband terminal can receive signals in the 336-344M frequency band in addition to signals in the 351-366M frequency band of PDT. When receiving the signals in the uplink working frequency band and the downlink working frequency band of PDT, based on the signal strength of the uplink working frequency band and the downlink working frequency band of PDT meeting the preset conditions, the maximum transmission power of the 340M broadband terminal is limited and / or the frequency band far away from the PDT working frequency band is preferentially used to send uplink data, thereby effectively suppressing the interference of the 340M broadband terminal to the PDT terminal. Based on the above scheme, the hardware improvement of the 340M broadband terminal in the present application is to enable the 340M broadband terminal to receive signals in the 351-366M frequency band of PDT. This improvement can be achieved by increasing the filter passband on the signal receiving side, and this implementation method can hardly increase the volume of the 340M broadband terminal.

[0071] In an optional embodiment, the first signal strength and the second signal strength satisfying a preset condition may include:

[0072] The first signal strength is greater than a first threshold, and the second signal strength is less than a second threshold. Typically, the second threshold is less than the first threshold.

[0073] 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.

[0074] In an optional embodiment, one implementation of limiting the maximum transmission 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:

[0075] 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 first signal strength and the second signal strength meet a preset condition.

[0076] Receive control information sent by the 340M broadband base station, and based on the control information, limit the maximum transmission power of the 340M broadband terminal and / or give priority to using a frequency band far away from the PDT working frequency band to send uplink data.

[0077] That is to say, the maximum transmission power and operating frequency band of the 340M broadband terminal are indicated by the 340M broadband base station scheduling.

[0078] 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 a preset condition.

[0079] or,

[0080] Regardless of whether the first signal strength and the second signal strength meet the preset conditions, a 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 preset 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 do not 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 do not meet the preset conditions.

[0081] Correspondingly, the 340M broadband base station sends control information to the 340M broadband terminal only when the first signal strength and the second signal strength meet the preset conditions, so as to limit the maximum transmission power of the 340M broadband terminal and / or give priority to using a frequency band far away from the PDT working 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 transmission power of the 340M broadband terminal and / or give priority to using a frequency band far away from the PDT working frequency band to send uplink data.

[0082] In an optional embodiment, when the maximum transmission power of the 340M broadband terminal is limited, the maximum transmission power of the 340M broadband terminal is different according to different modulation modes of the 340M broadband base station for scheduling the 340M broadband terminal.

[0083] Optionally, the modulation modes of the 340M broadband base station scheduling the 340M broadband terminal may 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; wherein,

[0084] When the modulation mode is QPSK, the maximum transmission power of the 340M broadband terminal is greater than the maximum transmission power of the 340M broadband terminal when the modulation mode is 16QAM; optionally, the maximum transmission power of the 340M broadband terminal when the modulation mode is QPSK is 1db greater than the maximum transmission power of the 340M broadband terminal when the modulation mode is 16QAM.

[0085] When the modulation mode is 16QAM, the maximum transmission power of the 340M broadband terminal is greater than the maximum transmission power of the 340M broadband terminal when the modulation mode is 64QAM; optionally, the maximum transmission power of the 340M broadband terminal when the modulation mode is 16QAM is 1.5db greater than the maximum transmission power of the 340M broadband terminal when the modulation mode is 64QAM.

[0086] Corresponding to the method embodiment, the present application also provides a 340M broadband terminal. A structural schematic diagram of the 340M broadband terminal provided by the present application is shown in FIG. Figure 4 As shown, it may include:

[0087] RF circuit 41, memory 42, processor 43 and communication interface 44; wherein,

[0088] The processor 43, the communication interface 44, the memory 42 and the radio frequency circuit 41 communicate with each other via a communication bus;

[0089] Optionally, the communication interface 44 may be an interface of a communication module, such as an interface of a GSM module;

[0090] 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.

[0091] The radio frequency circuit 41 is used to transmit and receive signals in the 336-344M frequency band, and receive uplink working frequency band signals and downlink working frequency band signals of the police digital trunking standard PDT;

[0092] The memory 42 is used to store programs; it may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0093] The processor 43 is used to execute the program stored in the memory 42 to implement the following steps:

[0094] Detecting a first signal strength of an uplink operating frequency band and a second signal strength of a downlink operating frequency band of the PDT;

[0095] If the first signal strength and the second signal strength meet a preset condition, the maximum transmission power of the 340M broadband terminal is limited and / or a frequency band far away from the PDT working frequency band is preferentially used to send uplink data.

[0096] The 340M broadband terminal provided in the present application can not only receive signals in the 336~344M frequency band, but also receive signals in the 351~366M frequency band of PDT. When the PDT uplink working frequency band and downlink working frequency band signals are received, based on the signal strength of the uplink working frequency band and downlink working frequency band of PDT meeting the preset conditions, the maximum transmission power of the 340M broadband terminal is limited and / or the frequency band far away from the PDT working frequency band is preferentially used to send uplink data, thereby effectively suppressing the interference of the 340M broadband terminal to the PDT terminal.

[0097] In an optional embodiment, the first signal strength and the second signal strength satisfying a preset condition include:

[0098] The first signal strength is greater than a first threshold, and the second signal strength is less than a second threshold.

[0099] In an optional embodiment, when the processor 43 limits the maximum transmission 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 to:

[0100] Sending a measurement report to the 340M broadband base station, where the measurement report carries identification information for identifying that the first signal strength and the second signal strength meet a preset condition;

[0101] Receive control information sent by the 340M broadband base station, and based on the control information, limit the maximum transmission power of the 340M broadband terminal and / or give priority to using a frequency band far away from the PDT working frequency band to send uplink data.

[0102] Optionally, the processor 43 may send a measurement report to the 340M broadband base station only when the first signal strength and the second signal strength meet a preset condition.

[0103] or,

[0104] The processor 43 can 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 whether the first signal strength and the second signal strength meet the preset conditions. Correspondingly, the 340M broadband base station sends control information to the 340M broadband terminal only when the first signal strength and the second signal strength meet the preset conditions, so as to limit the maximum transmission power of the 340M broadband terminal and / or give priority to using a frequency band away from the PDT working frequency band to send uplink data.

[0105] In an optional embodiment, when the processor 43 limits the maximum transmission power of the 340M broadband terminal, it is specifically configured to:

[0106] According to different modulation modes of the 340M broadband terminal scheduled by the 340M broadband base station, the maximum transmission power of the 340M broadband terminal is different.

[0107] In an optional embodiment, the modulation modes of the 340M broadband base station scheduling the 340M broadband terminal include at least the following three: quadrature phase shift keying QPSK, 16 quadrature amplitude phase modulation 16QAM, and 64 quadrature amplitude phase modulation 64QAM;

[0108] When the modulation mode is QPSK, the maximum transmission power of the 340M broadband terminal is greater than the maximum transmission power of the 340M broadband terminal when the modulation mode is 16QAM;

[0109] When the modulation mode is 16QAM, the maximum transmission power of the 340M broadband terminal is greater than the maximum transmission power of the 340M broadband terminal when the modulation mode is 64QAM.

[0110] Based on the same technical idea as the above signal processing method, the embodiment of the present application provides another signal processing method, which is applied to a 340M broadband base station. The implementation flow chart of the signal processing method is as follows: Figure 5 As shown, it may include:

[0111] Step S51: receiving a signal strength measurement report of a PDT uplink working frequency band and a downlink working frequency band reported by a 340M broadband terminal.

[0112] The measurement report can be sent to the 340M broadband base station after 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 determines whether the first signal strength and the second signal strength meet the preset conditions.

[0113] Step S52: Send control information to the 340M broadband terminal according to the measurement report to limit the maximum transmission power of the 340M broadband terminal and / or schedule the 340M broadband terminal to use a frequency band far away from the PDT working frequency band to send data.

[0114] When the measurement report indicates that the first signal strength and the second signal strength meet preset conditions, the 340M broadband base station can send control information to the 340M broadband terminal to limit the maximum transmission power of the 340M broadband terminal and / or schedule the 340M broadband terminal to send data using a frequency band away from the PDT working frequency band.

[0115] The signal processing method provided in the embodiment of the present application limits the maximum transmission power of the 340M broadband terminal and / or schedules the 340M broadband terminal to use a frequency band away from the PDT working frequency band to send data according to the signal strength of the PDT uplink working frequency band and the downlink working frequency band reported by the 340M broadband terminal, thereby effectively suppressing the interference of the 340M broadband terminal to the PDT terminal.

[0116] In an optional embodiment, an implementation manner of sending the control information to the 340M broadband terminal according to the measurement report may be:

[0117] Analyze the measurement report, and when the signal strength of the PDT uplink working frequency band is greater than the first threshold and the signal strength of the PDT downlink working frequency band is less than the second threshold, make a decision to adjust the 340M broadband terminal, and send corresponding control information to the 340M broadband terminal;

[0118] The above decision includes limiting the maximum transmission power of the 340M broadband terminal and / or scheduling the 340M broadband terminal to preferentially use a frequency band far away from the PDT working frequency band to send uplink data.

[0119] In an optional embodiment, when limiting the maximum transmission power of the 340M broadband terminal, it is specifically used to:

[0120] According to different modulation modes of the 340M broadband terminal scheduled by the 340M broadband base station, the maximum transmission power of the 340M broadband terminal is different.

[0121] In an optional embodiment, the modulation modes of the 340M broadband base station scheduling the 340M broadband terminal include at least the following three: quadrature phase shift keying QPSK, 16 quadrature amplitude-phase modulation 16QAM, and 64 quadrature amplitude-phase modulation 64QAM;

[0122] The maximum transmission power of a 340M broadband terminal when the modulation mode is QPSK is greater than the maximum transmission power of a 340M broadband terminal when the modulation mode is 16QAM;

[0123] When the modulation mode is 16QAM, the maximum transmission power of the 340M broadband terminal is greater than the maximum transmission power of the 340M broadband terminal when the modulation mode is 64QAM.

[0124] The embodiment of the present application further provides a communication system, which may include: a 340M broadband terminal and a 340M broadband base station, wherein:

[0125] 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 specific implementation method can refer to the above embodiment, which will not be repeated here.

[0126] The 340M broadband base station is used to send control information to the 340M broadband terminal according to the measurement report to limit the maximum transmission power of the 340M broadband terminal and / or schedule the 340M broadband terminal to use a frequency band away from the PDT working frequency band to send data. The specific implementation method can be referred to the above embodiment and will not be repeated here.

[0127] The present application also provides a readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the following functions are realized:

[0128] Receive the uplink working frequency band signal and the downlink working frequency band signal of the police digital trunking standard PDT; 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.

[0129] Detecting a first signal strength of an uplink operating frequency band and a second signal strength of a downlink operating frequency band of the PDT;

[0130] If the first signal strength and the second signal strength meet a preset condition, the maximum transmission power of the 340M broadband terminal is limited and / or a frequency band far away from the PDT working frequency band is preferentially used to send uplink data.

[0131] Optionally, the detailed functions and extended functions of the program may refer to the above description.

[0132] The present application also provides another readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the following functions are realized:

[0133] Receive the signal strength measurement report of the PDT uplink working frequency band and downlink working frequency band reported by the 340M broadband terminal.

[0134] Control information is sent to the 340M broadband terminal according to the measurement report to limit the maximum transmission power of the 340M broadband terminal and / or schedule the 340M broadband terminal to use a frequency band far away from the PDT working frequency band to send data.

[0135] Optionally, the detailed functions and extended functions of the program may refer to the above description.

[0136] Those of ordinary skill in the art will appreciate 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. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0137] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0138] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0139] 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 separately, or two or more units may be integrated into one unit.

[0140] It should be understood that in the embodiments of the present application, the various embodiments and features can be combined with each other to solve the aforementioned technical problems.

[0141] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0142] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A signal processing method, applied to a 340M broadband terminal, characterized in that: The method comprises: Receive the uplink and downlink working frequency band signals of the police digital trunking standard PDT; Detecting a first signal strength of an uplink operating frequency band and a second signal strength of a downlink operating frequency band of the PDT; If the first signal strength and the second signal strength meet a preset condition, limiting the maximum transmission 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; 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, and the second threshold is less than the first threshold.

2. The method according to claim 1, characterized in that The limiting the maximum transmission 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 includes: Sending a measurement report to the 340M broadband base station, where the measurement report carries identification information for identifying that the first signal strength and the second signal strength meet a preset condition; Receive control information sent by the 340M broadband base station, and based on the control information, limit the maximum transmission power of the 340M broadband terminal and / or give priority to using a frequency band far away from the PDT working frequency band to send uplink data.

3. The method according to claim 1, characterized in that The limiting the maximum transmission power of the 340M broadband terminal includes: According to different modulation modes of the 340M broadband terminal scheduled by the 340M broadband base station, the maximum transmission power of the 340M broadband terminal is different.

4. The method according to claim 3, characterized in that: The modulation modes of the 340M broadband base station scheduling the 340M broadband terminal include at least the following three: quadrature phase shift keying QPSK, 16 quadrature amplitude-phase modulation 16QAM, and 64 quadrature amplitude-phase modulation 64QAM; When the modulation mode is QPSK, the maximum transmission power of the 340M broadband terminal is greater than the maximum transmission power of the 340M broadband terminal when the modulation mode is 16QAM; When the modulation mode is 16QAM, the maximum transmission power of the 340M broadband terminal is greater than the maximum transmission power of the 340M broadband terminal when the modulation mode is 64QAM.

5. A signal processing method, applied to a 340M broadband base station, characterized in that: The method comprises: Receive the signal strength measurement report of the PDT uplink and downlink working frequency bands reported by the 340M broadband terminal; Sending control information to the 340M broadband terminal according to the measurement report to limit the maximum transmission power of the 340M broadband terminal and / or scheduling the 340M broadband terminal to use a frequency band far away from the PDT working frequency band to send data; The sending control information to the 340M broadband terminal according to the measurement report comprises: Analyze the measurement report, and when the signal strength of the PDT uplink working frequency band is greater than a first threshold and the signal strength of the PDT downlink working frequency band is less than a second threshold, make a decision to adjust the 340M broadband terminal and send corresponding control information to the 340M broadband terminal, the second threshold is less than the first threshold.

6. The method according to claim 5, characterized in that The decision includes limiting the maximum transmission power of the 340M broadband terminal and / or scheduling the 340M broadband terminal to preferentially use a frequency band far away from the PDT working frequency band to send uplink data.

7. A communication system, characterized in that: include: 340M broadband terminal and 340M broadband base station, including: 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 used to send control information to the 340M broadband terminal according to the measurement report, so as to limit the maximum transmission power of the 340M broadband terminal and / or schedule the 340M broadband terminal to use a frequency band far away from the PDT working frequency band to send data; The sending control information to the 340M broadband terminal according to the measurement report comprises: Analyze the measurement report, and when the signal strength of the PDT uplink working frequency band is greater than a first threshold and the signal strength of the PDT downlink working frequency band is less than a second threshold, make a decision to adjust the 340M broadband terminal and send corresponding control information to the 340M broadband terminal, the second threshold is less than the first threshold.

8. A 340M broadband terminal, characterized in that: include: RF circuits, memory and processors; The radio frequency circuit is used to send and receive signals in the 336-344M frequency band, and to receive uplink and downlink working frequency band signals of the police digital trunking standard PDT; The memory is used to store programs; The processor is used to execute the program to implement the following steps: Detecting a first signal strength of an uplink operating frequency band and a second signal strength of a downlink operating frequency band of the PDT; If the first signal strength and the second signal strength meet the preset conditions, the maximum transmission power of the 340M broadband terminal is limited and / or the frequency band away from the PDT working frequency band is preferentially used to send uplink data. The first signal strength and the second signal strength meet the preset conditions including: the first signal strength is greater than a first threshold, and the second signal strength is less than a second threshold, and the second threshold is less than the first threshold.

9. A readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, each step of the signal processing method according to any one of claims 1 to 4 is implemented.

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