CN111182554A

CN111182554A - Communication frequency adjusting method, baseband processor, electronic equipment and chip

Info

Publication number: CN111182554A
Application number: CN201911392725.9A
Authority: CN
Inventors: 徐波; 孙志浩; 柴旭荣; 邱昕
Original assignee: Institute of Microelectronics of CAS
Current assignee: Institute of Microelectronics of CAS
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-05-19

Abstract

The invention provides a communication frequency adjusting method, a baseband processor, electronic equipment and a chip, and relates to the technical field of communication. The communication frequency adjustment method includes: receiving frequency spectrum sensing information; and adjusting the communication frequency according to the frequency spectrum sensing information, so that the noise of the communication frequency band where the adjusted communication frequency is located is less than or equal to the preset noise. The baseband processor is applied to the communication frequency adjusting method. The communication frequency adjusting method is used in electronic equipment.

Description

Communication frequency adjusting method, baseband processor, electronic equipment and chip

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a communication frequency adjustment method, a baseband processor, an electronic device, and a chip.

Background

The existing fourth Generation mobile communication technology (The 4th Generation Long Term Evolution, abbreviated as 4G LTE) has The advantages of fast communication speed, wide network spectrum, high intelligent performance, good compatibility, high frequency efficiency, high communication quality and The like, and is therefore widely applied to The existing public network communication and private network communication.

At present, no matter public network 4G LTE or private network 4G LTE, the frequency band of the communication signal frequency received and transmitted by the electronic device including the terminal device and the communication device cannot be changed or can be changed, but the expected effect cannot be achieved, so that the noise of the frequency band of the changed communication signal frequency is still very large.

Disclosure of Invention

The invention aims to provide a communication frequency adjusting method, a baseband processor, electronic equipment and a chip, which can intelligently adjust the communication frequency and improve the communication quality.

In order to achieve the above object, the present invention provides a communication frequency adjustment method applied to a baseband processor. The method comprises the following steps:

receiving frequency spectrum sensing information;

and adjusting the communication frequency according to the frequency spectrum sensing information, so that the noise of the communication frequency band where the adjusted communication frequency is located is less than or equal to the preset noise.

Optionally, the frequency spectrum sensing information is time domain information, and the adjusting of the communication frequency according to the frequency spectrum sensing information includes: obtaining the corresponding relation between the frequency and the amplitude according to the time domain information; searching a center frequency from a corresponding relation between the frequency and the amplitude, wherein the noise of a communication frequency band where the center frequency is located is less than or equal to a preset noise; the communication frequency is adjusted according to the center frequency.

Preferably, obtaining the correspondence between the frequency and the amplitude according to the time domain information includes: and converting the time domain information into the corresponding relation between the frequency and the amplitude by utilizing a Fourier transform method.

Preferably, the center frequency is a frequency corresponding to a minimum average amplitude in the correspondence between the frequency and the amplitude; the minimum average amplitude is the minimum value of the average amplitude of each communication frequency band in the corresponding relation of the frequency and the amplitude.

Preferably, searching for the center frequency from the correspondence between the frequency and the amplitude includes: determining the average amplitude of the corresponding relation between the frequency and the amplitude in a plurality of communication frequency bands according to preset parameters; determining the minimum average amplitude value in a plurality of communication frequency bands according to the corresponding relation between the frequency and the amplitude value; and searching the center frequency from the corresponding relation between the frequency and the amplitude according to the minimum average amplitude.

Further, the preset parameter includes a set step size and/or a bandwidth of a communication frequency band.

Compared with the prior art, the communication frequency adjusting method provided by the invention has the advantages that the spectrum sensing information is obtained through the spectrum sensing of the space electromagnetic information, and then the communication frequency is adjusted according to the spectrum sensing information, so that the noise of the set frequency band where the adjusted communication frequency is located is smaller than or equal to the noise of the set frequency band where the preset noise frequency is located, the intelligent LTE communication with the spectrum sensing information as the reference is established in the frequency band with lower noise, the frequency band of the electronic equipment is prevented from being unchangeable, and the problem that the communication frequency can be adjusted in a small range and is relatively blind is solved.

The invention also provides a baseband processor. The baseband processor includes:

the receiving and sending unit is used for receiving frequency spectrum sensing information;

and the processing unit is used for adjusting the communication frequency according to the frequency spectrum sensing information, so that the noise of the communication frequency band where the adjusted communication frequency is located is less than or equal to the preset noise.

Optionally, the frequency spectrum sensing information is time domain information, and the processing unit is specifically configured to obtain a correspondence between a frequency and an amplitude according to the time domain information; searching a central frequency from the corresponding relation between the frequency and the amplitude, wherein the noise of a set frequency band where the central frequency is located is less than or equal to a preset noise; the communication frequency is adjusted according to the center frequency.

Preferably, the processing unit is specifically configured to convert the time domain information into a correspondence between a frequency and an amplitude by using a fourier transform method.

Preferably, the processing unit is specifically configured to determine, according to a preset parameter, an average amplitude of the correspondence between the frequency and the amplitude in the plurality of communication frequency bands; determining the minimum average amplitude value in a plurality of communication frequency bands according to the corresponding relation between the frequency and the amplitude value; and searching the center frequency from the corresponding relation between the frequency and the amplitude according to the minimum average amplitude.

Compared with the prior art, the beneficial effects of the baseband processor provided by the invention are the same as those of the communication frequency adjusting method in the technical scheme, and are not repeated herein.

The invention also provides electronic equipment. The electronic device comprises a processor and a communication interface coupled with the processor; the processor is used for running a computer program or instructions to execute the communication frequency adjustment method for implementing the technical scheme.

Compared with the prior art, the beneficial effects of the electronic device provided by the invention are the same as those of the communication frequency adjusting method in the technical scheme, and are not repeated herein.

The invention also provides a computer storage medium. The computer storage medium stores instructions, and when the instructions are executed, the communication frequency adjustment method in the above technical solution is implemented.

Compared with the prior art, the beneficial effects of the computer storage medium provided by the invention are the same as the beneficial effects of the communication frequency adjusting method in the technical scheme, and are not repeated herein.

The invention also provides a chip. The chip comprises a processor and a communication interface coupled with the processor, wherein the processor is used for running a computer program or instructions to execute the communication frequency adjusting method for realizing the technical scheme.

Compared with the prior art, the beneficial effects of the chip provided by the invention are the same as those of the communication frequency adjusting method in the technical scheme, and are not repeated herein.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. In the drawings:

fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a 4G LTE communication base station according to an embodiment of the present invention;

FIG. 3 is a digitized spectrum diagram of a communications band of a private network in accordance with an embodiment of the present invention;

fig. 4 is a flowchart of a communication frequency adjustment method according to an embodiment of the present invention;

FIG. 5 is a digitized spectrum plot of frequency versus amplitude correspondence in an embodiment of the present invention;

FIG. 6 is a digitized spectrum plot of center frequency finding using a moving average comparison method in an embodiment of the present invention;

FIG. 7 is a flowchart of finding a center frequency according to an embodiment of the present invention;

FIG. 8 is a flowchart illustrating a method for finding a center frequency using a moving average comparison method according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a baseband processor according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a chip according to an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention is clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The "plurality" mentioned in the present embodiment means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a is present alone, A and B are present simultaneously, and B is present alone. The terms "exemplary" or "such as" are used herein to mean serving as an example, instance, or illustration, and are intended to present concepts in a concrete fashion, and should not be construed as preferred or advantageous over other embodiments or designs.

Before describing the embodiments of the present application, the terms related to the embodiments of the present application will be explained as follows:

the fourth Generation mobile communication technology (abbreviated as 4GLTE) is a broadband access and distributed Internet Protocol (IP) architecture network, and is an integrated multifunctional broadband mobile communication system. It includes two systems: time Division Long Term Evolution (TDD-LTE) and Frequency Division Long Term Evolution (FDD-LTE), respectively.

Spectrum Sensing (SS) technology is a technology for transmitting information by using a wireless Spectrum through intelligently Sensing and learning the wireless Spectrum environment where the Spectrum Sensing (SS) technology is located.

Software Defined Radio (SDR) technology is to perform analog/digital and digital/analog conversion on a wireless signal as close to a Radio frequency antenna as possible, that is, to digitize a received analog signal as early as possible, and to implement various functions of communication to the greatest extent through Software.

Open air interface software (OAI) is an open source wireless communication platform with multiple air interface systems developed and maintained by Eurocom organization in europe, and all the protocol layer functions of LTE are implemented by software on a Personal Computer (PC).

A general Software Radio (USRP) includes a Field Programmable Gate Array (FPGA) motherboard with high-speed signal processing, and one or more swappable daughter boards covering different frequency ranges. Together they accomplish either the transmission of the bit stream data from the antenna to the host computer, i.e. the reception, or the transmission from the host computer to the antenna, i.e. the transmission.

The open source radio software development kit (GNURadio), which provides signal operation and processing, allows software defined radio to be implemented on external radio frequency hardware and general purpose microprocessors, and reconfigurability is an important feature thereof.

The communication frequency adjusting method provided by the embodiment of the invention is applied to electronic equipment. The electronic equipment can be applied to terminal equipment or communication equipment. The terminal equipment can be various terminal equipment such as a vehicle-mounted terminal, a mobile phone, a computer, a server and the like. The communication device may be a base station, a satellite, or other various communication devices. The following describes a communication frequency adjustment method provided in an embodiment of the present invention, taking a base station as an example.

Fig. 1 shows a system architecture of a communication system applied in an embodiment of the present invention, and as shown in fig. 1, the communication system includes a computer 2 (including a 4G module), a base station 1 and a mobile phone 3. The base station 1, the 4G module of the computer 2 and the mobile phone 3 receive and transmit data through a communication channel, wherein the communication channel may be a wireless communication channel or a wired communication channel.

Fig. 2 shows a schematic structural diagram of a 4G LTE communication base station provided in the embodiment of the present invention. The 4G LTE wireless signal sent by the first terminal equipment is received and processed through the base station 1, data exchange processing is carried out through a core network, the 4G LTE wireless signal sent by the first terminal equipment is sent to the second terminal equipment, and transmission of 4G LTE network data is achieved. The 4G LTE communication base station includes a baseband unit 11, a radio frequency unit 12, and an antenna feeder unit 13. Wherein the antenna feed unit 13 includes an antenna and a feed line for connecting the radio frequency unit 12 and the antenna.

The baseband unit 11 is provided with a baseband processor therein, and the baseband processor is mainly used for signal processing, radio resource management, and the like of the entire base station. The radio frequency unit 12 is provided with a common radio frequency board card. The radio frequency board card is mainly used for converting a radio frequency signal and a baseband signal, and transmitting an LTE wireless signal received by the antenna feeder unit 13 to a baseband processor for processing after the LTE wireless signal is amplified and digitized. The antenna feeder unit 13 is mainly configured to receive an LTE wireless signal sent by a first terminal device, and transmit the LTE wireless signal to the nearest radio frequency unit 12. Meanwhile, the rf unit 12 may also convert the baseband signal provided by the baseband processor into an rf signal, and transmit the rf signal to the second terminal device by using the antenna feeder unit 13.

For example: during the conversation process of the users A and B, the mobile phone of the user A needs to access the core network 4 through the base station 1. In the process, the antenna feeder unit 13 receives the LTE wireless signal sent by the mobile phone of the user a and sends the LTE wireless signal to the baseband unit 11 through the radio frequency unit 12, and the baseband unit 11 processes the 4G LTE wireless signal digitized by the radio frequency unit 12 and sends the 4G LTE wireless signal to the mobile phone of the user b through data exchange of the core network 4.

While the communication function is realized, the communication frequency of the public network communication system is fixed and cannot be adjusted. For a private network communication system, even if a communication frequency point can be changed in a small range or a communication frequency band where the communication frequency is located is changed, the situation of interference and noise of the changed communication frequency band cannot be judged.

For example, fig. 3 shows a digitized spectrogram of a communication frequency of a private network, and as shown in fig. 3, noise interference in a middle frequency band of the communication frequency of the private network communication system is large, noise interference in a part of the communication frequency band is small, and if the communication frequency band overlaps with the frequency band with large noise interference, communication quality may be greatly affected, for example, communication rate of a terminal is low or communication is stuck. Therefore, it is important to determine a communication frequency with less noise interference suitable for the communication of the 4G LTE communication base station.

Based on this, the embodiment of the present invention provides a communication frequency adjustment method, which is applied to an electronic device having a baseband processor and a radio frequency board. The electronic device may support 3G, 4G LTE, 5G, and other communication networks. The radio frequency board card is a radio frequency device capable of realizing 4G LTE wireless signal receiving and transmitting and spectrum sensing. Fig. 4 shows a flow chart of a communication frequency adjustment method of an electronic device based on 4G LTE communication. The communication frequency adjusting method comprises the following steps:

step 101: the radio frequency board card collects frequency spectrum sensing information. When a 4G LTE communication base station in the existing communication system realizes a communication function, the communication frequency is fixed, and even if the communication frequency point can be changed in a small range, the spectrum sensing cannot be carried out, so that the basis of change is lacked, namely, the noise and interference conditions of the communication frequency band where the communication frequency is located cannot be known only through communication.

In order to realize the integration and reconstruction of the communication function and the spectrum sensing function, the embodiment of the invention realizes the spectrum sensing function by using the spectrum equipment such as the radio frequency board card. For example: the radio frequency board card can be a USRP B210 radio frequency board card or other existing software radio frequency board card.

Taking a baseband processor as an example, the USRP B210 radio frequency board card is configured. The USRP B210 radio frequency board card can send out 4G LTE wireless signals with specified waveforms through the antenna of the USRP B210 radio frequency board card, and can also receive wireless signals sent by terminal equipment containing various information, so that the terminal equipment containing the registered SIM card is connected to a network, and a communication function is realized. And then, acquiring spectrum sensing information by using the USRPB210 radio frequency board card. It should be understood that the USRP B210 rf board may be used to collect spectrum sensing information first and then receive the 4G LTE wireless signal. The specific order is not limited herein and,

exemplarily, the USRP B210 radio frequency board receives and transmits a 4G LTE wireless signal of the mobile phone, and obtains spatial electromagnetic information where the 4G LTE wireless signal is located. The spatial electromagnetic information can reflect the noise interference condition of the communication frequency band where the communication frequency of the 4G LTE wireless signal is located. For example: when the USRP B210 radio frequency board card receives a 4GLTE wireless signal in a frequency band interval of 585MHz-615MHz, spatial electromagnetic interference corresponding to the frequency band interval of 585MHz-615MHz can be obtained. The spatial electromagnetic interference is the spectrum sensing information.

Step 102: and the radio frequency board card sends frequency spectrum sensing information to the baseband processor.

Step 103: and the baseband processor receives the frequency spectrum sensing information sent by the radio frequency board card.

Step 104: and the baseband processor adjusts the communication frequency according to the frequency spectrum sensing information, so that the noise of the communication frequency band where the adjusted communication frequency is located is less than or equal to the preset noise. It should be understood that the communication frequency here may be a center frequency, and may also be a communication frequency band.

In practical application, the baseband processor can determine the communication frequency according to the frequency spectrum sensing information, and configures the radio frequency board card according to the determined communication frequency so as to adjust the communication frequency of the 4G LTE communication base station.

When the above steps are implemented, the spectrum sensing and related processing module is required to perform appropriate software and/or hardware configuration and processing on the electronic device, so as to implement the spectrum sensing function and communication frequency adjustment. Of course, the spectrum sensing function and the communication frequency adjustment can also be realized based on some components with communication functions in the existing electronic equipment and the software radio equipment.

In terms of hardware, the software radio platform comprises a general processor platform and a USRP B210 radio frequency board card, and the processor platform is electrically connected with the USRP B210 radio frequency board card in a wired mode. In terms of software, software with software radio characteristics, such as communication or sensing, needs to be run in a processor platform to reconstruct functions of the software radio board. For example: running software OAI in a processor platform to support the processor to realize the complete 4G LTE protocol stack function; GNURADIo software is run in the processor platform to support the processing of the spectrum sensing information by the processor. The processor platform may be based on an existing baseband processor, or may be an existing personal computer platform.

In order to support the communication function, parameters of the USRP B210 radio frequency board, such as communication frequency, communication frequency band, or communication power, need to be configured. The USRP B210 radio frequency board card receives and transmits 4G LTE wireless signals with specified waveforms through an antenna of the USRP B210 radio frequency board card, and the information processing of the general processor platform is combined, so that the terminal equipment containing the registered SIM card is connected to a network, and the communication function is realized.

In order to realize the integration of the communication function and the spectrum sensing function, signals, such as space electromagnetic signals, are collected by using an antenna carried by the USRP B210 radio frequency board card. And sending the acquired space electromagnetic signals to a processor platform, and processing the space electromagnetic signals by using the running GNURADio software module by the processor platform. And acquiring the perceived signal spectrum information according to the processed result. And modifying communication parameters, such as communication radio frequency, communication radio frequency bandwidth or communication signal power, in the configuration file in the processor platform through the text processing program. And the processor platform sends the adjusted communication radio frequency parameters to the USRP B210 radio frequency board card and configures the communication radio frequency parameters into a radio frequency chip register of the USRP B210 radio frequency board card. The radio frequency board receives and transmits the 4G LTE wireless signal of the appointed communication parameter through the antenna of the radio frequency board. Taking the communication frequency as an example, the noise of the communication frequency band where the adjusted communication frequency is located is less than or equal to the preset noise.

For example: the available communication frequency band of a certain current private network is 1885MHz-1905MHz, and the bandwidth is 20 MHz. The baseband processor determines 1885MHz-1895MHz according to the frequency spectrum sensing information, and noise with the bandwidth of 10MHz is-100 dBm; 1895MHz to 1905MHz, and noise with a bandwidth of 10MHz is-115 dBm; and if the preset noise is-105 dBm, adjusting the communication frequency band to be 1895MHz-1905MHz and the bandwidth to be 10 Mhz. At this time, the noise of the communication frequency band where the adjusted communication frequency is located is less than or equal to the preset noise.

Based on the communication frequency adjustment method, the innovation points of the communication frequency adjustment method provided by the embodiment of the invention can be embodied in the following aspects:

in a first aspect: the communication function is realized by utilizing electronic equipment such as a base station, a terminal and the like, and the spectrum sensing function can be realized, so that a new communication mode which can communicate and adjust the communication frequency according to the spectrum sensing information is achieved.

Specifically, spectrum sensing provides a reference for communication, communication provides an application for spectrum sensing, and the two are fused and mutually complementary. The limitation that the traditional communication equipment can only communicate and cannot adjust the communication frequency according to the frequency spectrum sensing information is overcome. Further, a new flexible communication mode that the communication frequency and the communication frequency range suitable for communication are adjusted at any time according to the frequency spectrum sensing information is realized, and the universality and the flexibility of the communication system are improved.

In a second aspect, the baseband processor adjusts the communication frequency of the radio frequency board card according to the processed spectrum sensing information, so that the noise of the communication frequency band where the adjusted communication frequency is located is less than or equal to the preset noise. Therefore, the baseband processor can indirectly determine the communication parameters of the 4G LTE communication base station such as the base station and the terminal according to the spectrum sensing information. The intelligent 4G LTE communication with the frequency spectrum sensing information as the reference is realized, and the communication quality is improved.

As a possible implementation, the electromagnetic signal collected by the software radio is a time domain signal, considering that real signals in real space are all analog signals. In the case of a communication system, the communication frequency band is more important, so that it is necessary to transform a time domain signal into a frequency domain signal by fourier transform. Based on this, the spectrum sensing information is time domain information. The baseband processor adjusts the communication frequency according to the spectrum sensing information, and the baseband processor comprises:

step 1031: and the baseband processor acquires the corresponding relation between the frequency and the amplitude according to the time domain information. In practical applications, the corresponding relationship between the frequency and the amplitude may be a functional relationship between the frequency and the noise amplitude, or may be a digital spectrum chart between the frequency and the noise amplitude.

Step 1032: and the baseband processor searches the center frequency from the corresponding relation between the frequency and the amplitude, wherein the noise of the communication frequency band where the center frequency is positioned is less than or equal to the preset noise.

For ease of understanding, fig. 5 shows a digitized spectrogram of a frequency versus amplitude correspondence for a particular private network communications band. Wherein the abscissa is the frequency and the ordinate is the noise amplitude at which the frequency is located.

As shown in fig. 5, there are frequencies with larger noise amplitude and smaller noise amplitude in the digitized spectrogram of the frequency-amplitude correspondence relationship in fig. 5, and the center frequency can be searched from the digitized spectrogram of the frequency-amplitude correspondence relationship in fig. 5 according to the preset noise amplitude, and the noise amplitude of the center frequency is ensured to be less than or equal to the preset noise amplitude.

Step 1033: the baseband processor adjusts the communication frequency according to the center frequency. Based on the software radio platform set up in the foregoing, in practical application, the frequency parameter of the radio frequency board card is adjusted by using the text processing program of the baseband processor according to the searched center frequency. Specifically, a text search replacement program is used for modifying a central frequency parameter in a configuration file built in a baseband processor, the baseband processor sends the adjusted central frequency to a radio frequency board card, and an FPGA built in the radio frequency board card receives the central frequency and configures the central frequency to a register in a radio frequency chip. And the radio frequency chip receives and transmits the LTE wireless signal with the specified waveform corresponding to the central frequency according to the central frequency of the register. It should be understood that the noise amplitude of the communication band is less than or equal to the preset noise amplitude.

In an alternative, the time domain information is converted into frequency-amplitude correspondence using a fourier transform method. The GNURADIo software can be operated in a processor platform, the Fourier transform module in the GNURADIo software is utilized to convert time domain information into the corresponding relation between frequency and amplitude, and other software capable of realizing the conversion between the time domain information and the frequency domain information can be adopted to obtain the corresponding relation between the frequency and the amplitude.

In an alternative, a moving average comparison method is used to find the center frequency from the frequency-amplitude correspondence. Fig. 6 shows a digitized spectrogram for finding a center frequency by using a moving average comparison method, and fig. 7 shows a flow chart for finding a center frequency from a frequency-amplitude correspondence. Specifically, as shown in fig. 6 and 7, the method for searching for the center frequency from the correspondence between the frequency and the amplitude includes:

step 1032-11: and the baseband processor determines the average amplitude of the corresponding relation between the frequency and the amplitude in a plurality of communication frequency bands according to preset parameters. The preset parameters include a set step size and/or a bandwidth of a communication frequency. It should be understood that a plurality of communication bands herein means that there are a plurality of different communication bands in the correspondence of frequency to amplitude. For a plurality of different communication frequency bands, the bandwidths of the plurality of communication frequency bands are the same, and a certain set step interval is provided between the start frequency or the end frequency of any two adjacent communication frequency bands. For example: the two communication frequency bands are 585MHz-590MHz and 586MHz-591MHz, the step length is set to be 1MHz, and the bandwidth of the communication frequency band is 5 MHz. And calculating the average amplitude values of a plurality of communication frequency bands with different starting frequencies or terminating frequencies according to the set step length and the communication bandwidth.

Step 1032-12: and the baseband processor determines the minimum average amplitude value in a plurality of communication frequency bands according to the corresponding relation between the frequency and the amplitude value.

Step 1032-13: and the baseband processor searches the center frequency from the corresponding relation of the frequency and the amplitude according to the minimum average amplitude.

As can be seen from the above, the specific process of searching the center frequency from the corresponding relationship between the frequency and the amplitude can be regarded as an embodiment of the moving average comparison method. The center frequency is the frequency corresponding to the minimum average amplitude in the corresponding relation of the frequency and the amplitude; the minimum average amplitude is the minimum value of the average amplitude of each communication frequency band in the corresponding relation of the frequency and the amplitude.

In order to reduce unnecessary data processing, the data processing pressure and the operating speed of the baseband processor are reduced. Fig. 8 shows a flow chart for finding the center frequency using the moving average comparison method. Specifically, the method for searching for the center frequency by using the moving average comparison method includes:

step 1032-21: the baseband processor determines a start frequency and a stop frequency from the communication band of interest.

Step 1032-22: the baseband processor receives frequency spectrum sensing information in the communication frequency bands of the starting frequency and the ending frequency, and determines the corresponding relation between the frequency and the amplitude according to the frequency spectrum sensing information.

Step 1032-23: the baseband processor starts from the initial frequency, moves the interval of the stepping bandwidth by taking the stepping frequency as an interval, and calculates the average amplitude value of the corresponding relation of the frequency and the amplitude value in the interval of the stepping bandwidth.

Steps 1032-24: the baseband processor judges whether the tail frequency of the stepping bandwidth interval reaches the position of the termination frequency.

If the end frequency position is reached, the baseband processor executes steps 1032-25; otherwise, return to step 1032-23.

Step 1032-25: and selecting the central frequency point of the interval corresponding to the minimum average amplitude as the central frequency.

For example: and spectrum sensing information for the frequency band interval of 585MHz-615 MHz. The moving interval is moved from the initial frequency 585MHz to the end frequency 615MHz with the step frequency 1MHz as an interval and the step bandwidth 5MHz as a moving interval. And calculating the average noise amplitude of each 5MHz bandwidth interval in the frequency band interval of 585MHz-615MHz, and comparing. And according to the comparison result, selecting the central frequency point corresponding to the 5MHz bandwidth interval corresponding to the minimum average amplitude as the central frequency, and setting as the new communication frequency. And the bandwidth of 5MHz corresponding to the minimum average amplitude is a new communication frequency band.

By the method, the central frequency point of the interval of the walking bandwidth corresponding to the minimum average amplitude is selected as the central frequency in the concerned communication frequency band, the walking bandwidth corresponding to the minimum average amplitude is the communication frequency band, namely, a frequency band with relatively low background noise is obtained in the concerned communication frequency band, the frequency corresponding parameters in the configuration file are modified according to the central frequency and the communication frequency band, the transceiving frequency parameters of the radio frequency board are configured, the 4G LTE communication base station is started according to the new frequency parameters, the communication function with the frequency spectrum sensing information as the reference is realized, and the blindness of communication frequency adjustment is avoided. The communication parameter may be a communication frequency or a communication frequency band.

The above-mentioned scheme provided by the embodiment of the present application is introduced mainly from the perspective of interaction between network elements. It is understood that various network elements, such as the processor platform and the rf board, are provided. To implement the above functions, it includes hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.

In the case of using physical hardware, fig. 9 shows a schematic structural diagram of an electronic device provided in an embodiment of the present invention. The electronic device 500 is applied to a communication device or a terminal device, but is not limited thereto. As shown in fig. 9, the electronic device 500 includes a baseband processor 501 and a radio frequency board 502.

The rf board 502 is used to support the electronic device 500 to perform the steps 101 and 102 performed by the rf board 502 in the above embodiments.

The baseband processor 501 is used to support the electronic device 500 to perform the steps 103 and 104 performed by the baseband processor 501 in the above embodiments.

In a possible implementation manner, as shown in fig. 9, the baseband processor 501 is specifically configured to support the electronic device 500 to perform steps 1032-11 to 1032-13 performed by the baseband processor 501 in the above embodiment.

In an alternative manner, as shown in fig. 9, the baseband processor 501 is specifically configured to support the electronic device 500 to perform steps 1032-21 to 1032-25 performed by the baseband processor 501 in the above embodiment.

In the embodiment of the present application, the baseband processor 501 and the radio frequency board 502 may be divided into units according to the above method example, for example, the above functions may be implemented by using an integrated unit, and the integrated unit may be implemented in a form of hardware or a form of software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

In the case of using an integrated unit, fig. 10 shows a schematic structural diagram of a baseband processor provided in an embodiment of the present application. As shown in fig. 10, the baseband processor 501 may be a chip applied in the baseband processor. The baseband processor 501 may include: transceiver unit 5011 and processing unit 5012

The transceiving unit 5011 is used to support the baseband processor 501 to perform the step 103 performed by the baseband processor 501 in the above embodiments.

The processing unit 5012 is used to support the baseband processor 501 to perform the step 104 performed by the baseband processor 501 in the above embodiments.

The above transceiving unit 5011 may be a kind of communication interface of the apparatus for receiving signals from other apparatuses. For example, when the device is implemented in the form of a chip, the transceiving unit 5011 is a communication interface for the chip to receive signals or transmit signals from other chips or devices.

Fig. 11 shows a schematic structural diagram of a chip 700 according to an embodiment of the present invention. As shown in fig. 11, the chip 700 includes one or more than two (including two) processors 701 and a communication interface 702. The processor 701 is configured to run a computer program or instructions to execute the method for adjusting the communication frequency.

In some embodiments, memory 703 stores elements, execution modules or data structures, or a subset thereof, or an expanded set thereof.

The processor 701 controls the processing operation of any one of the baseband processor 501 and the radio frequency board 502 included in the electronic device 500 in this embodiment, and the processor 701 may also be referred to as a Central Processing Unit (CPU).

As shown in fig. 11, the memory 703 includes a read-only memory and a random access memory, and provides instructions and data to the processor 701. A portion of the memory 703 may also include NVRAM. For example, in use the processor 701, the communication interface 702 and the memory 703 are coupled together by a bus system 704, wherein the bus system 704 may include a power bus, a control bus, a status signal bus, etc. in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 11 as bus system 704.

In a possible implementation manner, as shown in fig. 11, the communication interface 702 is configured to support the chip 700 to perform the steps of receiving and transmitting of the baseband processor 501 and the radio frequency board 502 in the foregoing embodiment. The processor 701 is configured to support the chip 700 to execute the steps of the baseband processor 501 and the radio frequency board 502 in the foregoing embodiment.

In one aspect, a computer-readable storage medium is provided, in which instructions are stored, and when executed, implement the functions of the baseband processor in the above embodiments.

In another aspect, a computer-readable storage medium is provided, where instructions are stored in the computer-readable storage medium, and when the instructions are executed, the functions of the radio frequency board in the foregoing embodiments are implemented.

In one aspect, a computer program product comprising instructions is provided, and the computer program product comprises instructions that, when executed, implement the functions of the baseband processor in the above embodiments.

In another aspect, a computer program product including instructions is provided, where the instructions are executed to implement the functions of the rf board in the foregoing embodiments.

In one aspect, a chip is provided, where the chip is applied to a processor, and the chip includes at least one processor and a communication interface, where the communication interface is coupled to the at least one processor, and the processor is configured to execute instructions to implement the functions of the baseband processor in the foregoing embodiments.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the embodiments of the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only a specific implementation of the embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the embodiments of the present application, and all the changes or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A communication frequency adjustment method is applied to a baseband processor; the communication frequency adjustment method includes:

receiving frequency spectrum sensing information;

2. The method of claim 1, wherein the spectrum sensing information is time domain information, and the adjusting the communication frequency according to the spectrum sensing information comprises:

obtaining the corresponding relation between the frequency and the amplitude according to the time domain information;

searching a center frequency from the corresponding relation between the frequency and the amplitude, wherein the noise of the communication frequency band where the center frequency is located is less than or equal to a preset noise;

adjusting the communication frequency according to the center frequency.

3. The method according to claim 2, wherein the obtaining a correspondence between a frequency and an amplitude according to the time domain information comprises:

and converting the time domain information into the corresponding relation between the frequency and the amplitude by utilizing a Fourier transform method.

4. The communication frequency adjustment method according to claim 2 or 3, wherein the center frequency is a frequency corresponding to a minimum average amplitude in the correspondence relationship between the frequency and the amplitude; the minimum average amplitude is the minimum value of the average amplitude of each communication frequency band in the corresponding relation of the frequency and the amplitude.

5. The method according to claim 2 or 3, wherein the searching for the center frequency from the correspondence between the frequency and the amplitude comprises:

determining the average amplitude of the corresponding relation between the frequency and the amplitude in a plurality of communication frequency bands according to preset parameters;

determining the minimum average amplitude value in a plurality of communication frequency bands according to the corresponding relation between the frequency and the amplitude value;

and searching the center frequency from the corresponding relation between the frequency and the amplitude according to the minimum average amplitude.

6. The method according to claim 5, wherein the preset parameter comprises a set step size and/or a bandwidth of a communication band.

7. A baseband processor, comprising:

8. The baseband processor according to claim 7, wherein the spectrum sensing information is time domain information, and the processing unit is specifically configured to obtain a correspondence between a frequency and an amplitude according to the time domain information; searching a center frequency from the corresponding relation between the frequency and the amplitude, wherein the noise of the communication frequency band where the center frequency is located is less than or equal to a preset noise; adjusting the communication frequency according to the center frequency.

9. The baseband processor according to claim 8, wherein the processing unit is specifically configured to convert the time domain information into the correspondence between the frequency and the amplitude by using a fourier transform method.

10. The baseband processor of claim 8 or 9, wherein the center frequency is a frequency corresponding to a minimum average amplitude value in the frequency-amplitude correspondence; the minimum average amplitude is the minimum value of the average amplitude of each communication frequency band in the corresponding relation of the frequency and the amplitude.

11. The baseband processor of claim 8 or 9, wherein the processing unit is specifically configured to:

12. The baseband processor of claim 11, wherein the preset parameter comprises a set step size and/or a bandwidth of a communication band.

13. An electronic device comprising a processor and a communication interface coupled to the processor; the processor is used for running a computer program or instructions to execute the method for adjusting the communication frequency according to any one of claims 1 to 6.

14. A computer storage medium having stored therein instructions that, when executed, implement the communication frequency adjustment method of any one of claims 1 to 6.

15. A chip comprising a processor and a communication interface coupled to the processor; the processor is used for running a computer program or instructions to execute the method for adjusting the communication frequency according to any one of claims 1 to 6.