Method, device, terminal, and storage medium for adjusting communication mode of terminal

Abstract

A method, device, terminal, and storage medium for adjusting a communication mode of a terminal are provided, which includes the steps of: acquiring a running state of a terminal, the running state including one or any combination of a running scene, a network performance, and a running speed; matching a corresponding adjustment manner according to the running state, the adjustment manners respectively corresponding to different running states, N kinds of adjustment manners are preset, and N is an integer greater than 1; and adjusting the communication mode of the terminal according to the adjustment manner.

Description

[Technical Field]

[0001] This application is filed based on and claims priority from a Chinese patent application bearing application number 202111154844.8 and filing date September 29, 2021, the entire contents of which are hereby incorporated by reference into this application.

[0002] TECHNICAL FIELD The present invention relates to the field of communication transmission, and more particularly to a method, an apparatus, a terminal, and a storage medium for adjusting a communication mode of a terminal. [Background technology]

[0003] With the development and evolution of 5G terminals, especially multi-antenna multiple-in multiple-out (MIMO) 5G terminals, the number of terminal antennas is increasing and communication frequencies are becoming higher. The center frequencies of sub6G time division duplexing (TDD) such as N77, N78, and N79 in New Radio (NR) are around 3.3 GHz to 5 GHz, while the center frequencies of millimeter wave are around 28 GHz, 37 GHz to 40 GHz. NR also operates in two network modes: non-standalone (NSA) and standalone (SA). NSA relies on Long Term Evolution (LTE) base stations as anchors and has certain requirements for the anchor's signal quality.

[0004] However, terminals need to be used in high-speed mobile scenarios, and as the number of antennas increases and communication frequencies become higher and higher, the frequency offset at which terminals transmit and receive signals becomes more obvious, causing cell switching to become too frequent and degrading the terminal's communication performance. Summary of the Invention [Problem to be solved by the invention]

[0005] The main objective of the embodiments of the present application is to provide a method, device, terminal, and storage medium for adjusting a communication mode of a terminal that reduces the influence of external factors while the terminal is moving at high speed, ensures communication performance, and improves user experience. [Means for solving the problem]

[0006] To achieve the above object, an embodiment of the present application provides a communication mode adjustment method for a terminal, which includes: acquiring a running state of the terminal, the running state including one or any combination of a running scene, a network performance, and a running speed; matching a corresponding adjustment method according to the running state, the adjustment method corresponding to each different running state, and N types of adjustment methods are pre-set, where N is an integer greater than 1; and adjusting the communication mode of the terminal according to the adjustment method.

[0007] To achieve the above object, an embodiment of the present application further provides a communication mode adjustment device for a terminal, the communication mode adjustment device for a terminal including: an acquisition unit for acquiring a running state of a terminal, the running state including one or any combination of a running scene, a network performance, and a running speed; a matching unit for matching a corresponding adjustment method according to the running state, the adjustment methods respectively corresponding to different running states, N types of adjustment methods are pre-set, N is an integer greater than 1; and an execution unit for adjusting the communication mode of the terminal according to the adjustment method.

[0008] To achieve the above object, an embodiment of the present application further provides a terminal, the terminal including at least one processor and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, the instructions, when executed by the at least one processor, causing the at least one processor to perform a communication mode adjustment method for the terminal.

[0009] To achieve the above object, an embodiment of the present application further provides a computer-readable storage medium having a computer program stored therein, the computer program being executed by a processor to implement the communication mode adjustment method for the terminal. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a flowchart of a communication mode adjustment method for a terminal according to an embodiment of the present application; [Figure 2] 1 is a process diagram 1 of a terminal communication mode adjustment method according to an embodiment of the present application; [Figure 3] 2 is a process diagram 2 of a terminal communication mode adjustment method according to an embodiment of the present application; [Figure 4] 3 is a process diagram 3 of a terminal communication mode adjustment method according to an embodiment of the present application; [Figure 5] 4 is a process diagram 4 of a method for adjusting a communication mode of a terminal according to an embodiment of the present application; [Figure 6] 5 is a process diagram 5 of a method for adjusting a communication mode of a terminal according to an embodiment of the present application; [Figure 7] 6 is a process diagram 6 of a method for adjusting a communication mode of a terminal according to an embodiment of the present application; [Figure 8] 7 is a process diagram 7 of a method for adjusting a communication mode of a terminal according to an embodiment of the present application; [Figure 9] 8 is a process diagram 8 of a method for adjusting a communication mode of a terminal according to an embodiment of the present application; [Figure 10] 9 is a process diagram 9 of a method for adjusting a communication mode of a terminal according to an embodiment of the present application; [Figure 11] 1 is a process diagram 10 of a method for adjusting a communication mode of a terminal according to an embodiment of the present application; [Figure 12] 1 is a schematic diagram of a communication mode adjustment device of a terminal according to an embodiment of the present application; [Figure 13]FIG. 1 is a schematic diagram of a terminal according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0011] In order to clarify the objectives, technical solutions, and advantages of the embodiments of the present application, various embodiments of the present application will be described in detail below with reference to the drawings. However, although many technical details are described in the various embodiments of the present application to help readers better understand the present application, the technical solutions claimed for protection in the present application can be realized without these technical details and various changes and modifications based on the various embodiments below. The division of the various embodiments below is made for the convenience of explanation and does not constitute any limitation on specific embodiments of the present application, and various embodiments can be combined with or reference each other unless inconsistent.

[0012] The terms "first" and "second" in the examples of this application are used solely for descriptive purposes and should not be understood as indicating or implying relative importance or the number of technical features indicated. Thus, a feature qualified as "first" or "second" may explicitly or implicitly include at least one such feature. In this description, the terms "comprise" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a system, product, or device including a series of parts or units is not limited to the listed parts or units, but may include unlisted parts or units, or other parts or units inherent to such product or device. In this description, "plurality" means at least two, e.g., two, three, etc., unless otherwise explicitly specified.

[0013] With the development of 5G terminals, the number of terminal antennas is increasing and communication frequencies are becoming increasingly higher. In this context, when the mobile vehicle carrying the terminal is a high-speed train, the infrastructure design speed for high-speed trains is 250 km / h or higher, with a typical speed of 300 km / h to 450 km / h and a maximum speed of 605 km / h. High travel speeds have various impacts on 5G communications. Improving communication quality between base stations and trains using rotating antennas on trains can result in poor response times for the train's external rotating antennas and certain adjustment delays. Optimizing throughput and latency for high-speed trains using a narrowband mobile communication system for railways (GSM-R: Global System for Mobile Communications - Railway) mode specifically for high-speed trains can result in limited user throughput performance due to the existence of a high-speed train channel model based on GSM-R (900 MHz) and private network bandwidth, which limits the implementation of heavy-traffic multimedia services. The slicing mode of 5G private networks for high-speed trains allows for customized slicing for different scenarios, but the 5G-specific slicing module cannot address the problems of obstruction, rapid cell switching, and frequency offset during high-speed movement. The hotspot sharing device on high-speed trains converts base station signals from 5G signals to Wi-Fi hotspot signals using conversion equipment such as CPE for user use. In the hotspot sharing mode on high-speed trains, throughput is limited, and the hotspot quality is limited by the communication quality between the train and the base station, resulting in a certain delay. In other words, this method cannot ensure communication quality when the MIMO antenna terminal is moving at high speed due to external factors.

[0014] An embodiment of the present invention relates to a communication mode adjustment method for a terminal, the specific process of which is shown in Figure 1. This embodiment is applicable to 5G terminals, 5G terminal products and customer premises equipment (CPE) in high-speed scenarios, 2 / 3 / 4 / 5G standards, NSA and SA network modes, and all 5G terminal products, such as high-speed rail train operation scenarios.

[0015] In step 101, the running state of the terminal is obtained, and the running state includes one of the following: running scene, network performance, and running speed, or any combination thereof.

[0016] In step 102, according to the running state, a corresponding adjustment method is matched, and the adjustment methods correspond to different running states, respectively, and N kinds of adjustment methods are preset, where N is an integer greater than 1.

[0017] In step 103, the communication mode of the terminal is adjusted according to the adjustment method. In this embodiment, a terminal communication mode adjustment method is provided, which has N preset adjustment methods, each corresponding to a different operating state, where N is an integer greater than or equal to 2, and obtains the terminal operating state, identifies the terminal operating state parameters, matches the corresponding adjustment method according to the operating state, and adjusts the terminal communication mode according to the adjustment method. Calls the matching adjustment method to actively improve the terminal communication function in different operating scenarios, operating speeds, and different network performances, thereby improving the terminal communication quality and improving the user experience.

[0018] Hereinafter, the implementation details of the communication mode adjustment method for a terminal according to the present embodiment will be described in detail. The following content is merely implementation details provided for ease of understanding and is not essential to the present invention.

[0019] In step 101, the operating state of the terminal is obtained, the operating state including one of the operating scene, the network performance, and the operating speed, or any combination thereof, that is, the current operating state parameters of the terminal are obtained, and the communication mode of the terminal is adjusted according to the current parameters of the terminal.

[0020] In one example, when the operating state includes an operating scene, the method for acquiring the operating state of the terminal includes any one or any combination of the following: acquiring location information of the terminal using a cell base station and a Global Positioning System (GPS) and acquiring the operating scene of the terminal according to the location information; collecting environmental characteristic parameters using a camera of the terminal and acquiring the operating scene of the terminal according to the environmental characteristic parameters; and detecting radiation characteristics of the environment surrounding the terminal using electromagnetic waves and acquiring the operating scene of the terminal according to the radiation characteristics, the radiation characteristics including direct radiation, reflection, scattering, and / or diffraction characteristics. For example, as shown in FIG. 2, first, the cell base station and GPS perform initial positioning, then the camera collects characteristic parameters at different positions of the mobile vehicle carrying the terminal, and finally, the direct radiation, reflection, scattering, and diffraction characteristics of features in and around the mobile vehicle are detected by electromagnetic wave collection, such as 5G electromagnetic wave collection. The mobile vehicle carrying the terminal may be a high-speed rail train, a vehicle on a highway, etc.

[0021] In one example, a high-speed scene can be broadly divided into inside the premises, inside the vehicle, and outside the premises. Inside the premises can be concrete structures, tempered glass, metal frames, steel frames, and brick walls, while inside the vehicle can be alloy bodies, window glass, and moving vehicle doors. During communication with the base station, electromagnetic waves (SUB6G or mmW millimeter waves) must penetrate the materials in the above scenes. Therefore, path loss and attenuation caused by the materials degrade the communication quality of the terminal. Similarly, different materials have different dielectric constants, attenuation coefficients, scattering coefficients, and diffraction coefficients. Therefore, these characteristics are extracted to collect parameters, which are input into a parameter model. The specific high-speed scene is determined according to the output of the parameter model. In the parameter model, if the collected parameters are within the threshold range of the model parameter threshold, it can be determined which high-speed scene the wireless network signal environment in which the terminal is currently located is. In another example, a high-speed scene can be broadly divided into four parts: waiting room, exit, intermediate station, and while traveling. The waiting room and exit are further divided into three smaller scenes: a scene with a large number of people, a scene with a medium number of people, and a scene with a small number of people. The intermediate stations are further divided into smaller scenes such as inside the station, outside the station, inside the train, and outside the train (and the corresponding moving or stationary states). The mobile vehicle equipped with the terminal is divided into multiple speed scenes such as low-speed, medium-speed, and high-speed while in motion. The outside scenes are divided into scenes along the mobile vehicle, such as mountains, forests, buildings, rivers, tunnels, valleys, overpasses, stations, suburbs, villages, plains, and urban areas.

[0022] The above process of acquiring driving scenes can be performed without relying on GPS and can directly identify the current high-speed scene using a scene identification method. In addition to the above electromagnetic wave detection method, the scene identification method can also be performed by identifying the front and rear cameras or earphones of the terminal, that is, by using the front and rear cameras to collect images, videos, audio, and communication short messages (text messages, chat history, etc.) of the scene and environment where the terminal is located, and then filtering, classifying, and comparing with the parameter model library to determine the high-speed scene where the user terminal is currently located.

[0023] For example, when a current terminal is in a high-speed operation state and it is detected that network performance cannot meet user demand or a default threshold quality requirement, adaptive optimization adjustment is required. Therefore, the network quality of the current terminal needs to be collected in real time. The network quality includes the overall transmission and reception signal conditions of NR and the received signal conditions of each MIMO path. If the parameters are overall performance parameters, they may be uplink power, downlink Reference Signal Receiving Power (RSRP) value, Received Signal Strength Indication (RSSI) value, Signal-to-Noise Ratio (SNR) value, MIMO Rank data stream number, Modulation and Coding Scheme (MCS) modulation scheme, MCS order, etc., or wireless performance parameters such as uplink or downlink throughput, bit error rate, etc. If the parameters are received signal parameters of each MIMO path, they may be RSRP / RSSI values or channel sounding reference signal (SRS) values of each path. The acquired parameters can be seen in FIG. 3. These include a diversity receive (DRX) component and a transmit & receive (TRX) component.

[0024] In one example, when the operating state includes an operating speed, the method for acquiring the operating state of the terminal includes one of the following methods: acquiring the operating speed of the terminal according to a GPS positioning distance and a positioning time difference corresponding to the positioning distance; and acquiring the operating speed of the terminal according to an SRS feedback time difference and an angle difference corresponding to the feedback time difference, or any combination thereof. In some cases, the operating speed of a mobile vehicle on which the terminal is mounted is known, and the terminal is used on the mobile vehicle but the operating speed of the terminal is unknown, and the operating speed of the terminal may be acquired by referring to the following two methods.

[0025] In Method 1, the average operating speed of the device can be obtained by collecting the distances obtained before and after GPS positioning and dividing the distance by the time difference between the two measurements. If the time interval between the two measurements is sufficiently short, the obtained operating speed can be used as the current instantaneous operating speed. If the positioning distance between the two measurements is S meters and the time difference between the positioning distances is T, the operating speed V of the device is S / T, and the speed is further corrected using an acceleration or gyroscope sensor built into the device. For example, if a train where the device is located is moving, a relative speed will occur, and in this case, the operating speed correction must be achieved by calling a sensor module built into the device.

[0026] Method 2 achieves speed measurement based on the time difference between the SRS report and feedback of the terminal and the angle difference corresponding to the time difference. As shown in FIG. 4, the terminal transmits SRS signals in the same time slot in real time to a base station along the route where the terminal is mounted. Upon receiving the SRS signal, the base station feeds back a scheduling signal to the terminal. The terminal transmits SRS signals SRS1, SRS2, SRS3, and SRS4 to the base station via its four NR antennas. The base station then tests the SRS signal from the terminal to obtain angle information between the terminal and the base station. The angles are used to calculate two distances A and B traveled by the terminal. The distance A and B is then divided by the terminal's travel time to calculate the terminal's speed. Method 2 is also applicable when the terminal moves within a single base station cell. When a moving terminal moves between cells, the calculation process is as follows: The terminal collects SRS feedback information from the first cell B1 and then collects SRS feedback information from the second cell B2, and calculates the time difference between the two SRS feedback information. The location information of the two cells B1 and B2, such as the longitude and latitude, is publicly available basic information and is therefore pre-stored in the parameter storage module of the terminal. The current vehicle speed of the terminal can be calculated based on the distance, angle, and time difference between the two cells. Figure 5 shows the terminal traveling between cells B1 and B2.

[0027] In step 102, according to the running state, an adjustment method corresponding to the running state is matched, different adjustment methods correspond to different running states, and N kinds of adjustment methods are preset, where N is an integer greater than 1. That is, it is determined whether the real-time characteristics of the terminal satisfy the preset running state, and if it is determined that the running state is satisfied, the adjustment method corresponding to the running state is executed.

[0028] In one example, the adjustment method includes one or any combination of an uplink / downlink adjustment method, a frequency offset compensation method, a channel sounding reference signal (SRS) prediction method, and a route network matching method, respectively addressing problems that occur in different terminal operation processes and ensuring the communication quality of the terminal.

[0029] In one example, the step of matching a corresponding adjustment method according to the operating state includes one or any combination of the following: matching the uplink / downlink adjustment method when the signal strength of the network performance in the operating state is lower than a predetermined signal strength threshold, matching the frequency offset compensation method when the operating speed in the operating state is higher than a predetermined speed, matching the SRS predicted movement method when the throughput of the network performance is lower than a predetermined throughput threshold, matching the route network matching method when the network switching frequency of the network performance in the operating state is higher than a predetermined switching frequency threshold, and matching the route network matching method when the operating scene is a predetermined operating scene. That is, different adjustment methods are triggered by different adjustment conditions, and corresponding adjustment methods are started according to the adjustment conditions satisfied by the detected operating state, and a matching mapping relationship between each adjustment method and current real-time demand is established. The current network performance, operating scene, and operating speed are first detected, and the corresponding adjustment method is selected according to the acquired parameters of the operating state. For example, if the network signal is poor due to a weak terminal signal, uplink / downlink expansion adjustment is initiated; if the signal is unstable due to the mobile vehicle equipped with the terminal moving at high speed, frequency offset compensation adjustment is initiated; if the throughput decreases due to the mobile vehicle equipped with the terminal moving and the SRS performance also decreases, SRS prediction movement algorithm adjustment is initiated; and if the mobile vehicle equipped with the terminal is moving in a special scenario, route matching adjustment is initiated. When multiple adjustment conditions are met simultaneously, multiple adjustment methods may be invoked simultaneously in any order. Alternatively, adjustment methods may be executed according to several preset priorities according to priorities preset by the user. Furthermore, the correspondence between the above-mentioned operating states and adjustment methods refers to preferably adopting a corresponding adjustment method in a specific operating state, but is not limited to only being able to adopt the corresponding adjustment method in a specific operating state.If the terminal communication mode cannot meet the user demands by simply adopting the corresponding adjustment method in the current operating state, the remaining adjustment methods may be adopted for improvement. For example, if the signal strength of the network performance is lower than a preset signal strength threshold, the uplink / downlink adjustment method is preferably adopted. However, if the terminal communication mode cannot meet the user demands even after adopting the uplink / downlink adjustment method, one or more of the frequency offset compensation method, the channel sounding reference signal (SRS) prediction movement method, the route network matching method, etc. may be randomly adopted, or the remaining adjustment methods may be tried according to preset priorities or conditions, so that the terminal communication mode finally meets the user demands.

[0030] In one example, there is a fast mode matching module that links the current operating state of the terminal with the adjustment method, for example, by following a preset calling sequence, or by calculating the rate at which each parameter that meets the adjustment conditions exceeds its standard, performing priority sorting according to the rate at which the parameter exceeds the standard in real time, and calling the corresponding adjustment method according to the priority.

[0031] In one example, the adaptive control module is used for cooperative control in high-speed mode. The adaptive control module determines corresponding adjustment conditions according to the currently detected terminal operation scene, network performance, and operation speed, and triggers the optimization of corresponding control adjustments, such as uplink / downlink expansion adjustment, frequency offset compensation adjustment, SRS predictive movement algorithm adjustment, and route matching adjustment, to achieve the goal of optimizing the terminal's wireless communication performance in high-speed movement mode. The control adjustment here prioritizes a single adjustment method, and if a single adjustment method cannot fully resolve the issue, it invokes an adjustment method corresponding to another adjustment condition. For example, the current uplink / downlink signal strength may be checked first. If the signal strength is weak, the uplink / downlink adjustment method, i.e., an adjustment method that strengthens the uplink / downlink signal strength, may be prioritized. If the current signal strength is normal but the signal is unstable, and such an unstable signal indicates that the train (i.e., the environment in which the terminal is located) is traveling at high speed, the frequency offset compensation adjustment method may be prioritized. If the current user uses high-throughput downloads but does not reach a preset throughput threshold, the SRS predictive movement method may be prioritized for compensation adjustment. When the current user is in a special section such as a tunnel, a bridge hole, a mountain, etc., the route matching adjustment method may be invoked first. When multiple conditions above exist, multiple adjustment methods may be considered in combination until a reasonable operation state is reached.

[0032] In one example, a parameter storage module stores various terminal parameters, including acquired operating state parameters and parameters corresponding to each adjustment method. For example, slice parameters for different bandwidths, power, spectrum, interference, resource block (RB) resources, LTE and NR, carrier aggregation (CA) mode, SRS mode, MIMO mode, and uplink / downlink antenna switching mode are stored. CA mode combines multiple LTE or multiple NR carrier signals to expand bandwidth and improve uplink / downlink throughput rates. It also stores parameters and driver codes that control each slice adjustment. The module also stores peak uplink and downlink throughputs under different slice configurations and the peak and average uplink and downlink rates achieved by different application software in the past. It updates the throughput values required by the application software in real time based on large amounts of usage data and stores the updated results in the parameter storage module. This AI learning algorithm makes the invocation of each adjustment method more rational.

[0033] In step 103, the communication mode of the terminal is adjusted according to the adjustment method, that is, the current terminal parameters are adjusted according to the adjustment method corresponding to the selected adjustment conditions, so that the operation status of the terminal meets the user's needs or is optimal.

[0034] In one example, adjusting the communication mode of the terminal according to the adjustment method includes one or any combination of the following: adjusting a maximum power value and a minimum received level value of the terminal when matching the uplink / downlink adjustment method; acquiring a frequency offset value and compensating the communication mode of the terminal according to the frequency offset value when matching the frequency offset compensation method; scheduling an SRS resource configuration or a Pre-coding Matrix Indicator (PMI) resource configuration according to the channel strength of the network performance when matching the SRS prediction movement method; and performing network adjustment, cell switching compensation adjustment, or path attenuation compensation adjustment according to the operation scenario when matching the path network matching method. That is, the uplink / downlink adjustment method mainly extends the uplink / downlink signals of the terminal, for example, by adjusting them according to a power value, the frequency offset compensation mainly adjusts transmitted / received signals by calculating a frequency offset, the SRS prediction movement method mainly adjusts an SRS or PMI configuration method, and the path network matching method mainly performs preset environmental signal compensation according to the current environment.

[0035] For example, when a mobile terminal is moving, such as on a high-speed train, it may be blocked by a waiting room, the vehicle itself, or mountains, or the current train may be at the edge of a base station cell. Therefore, the mobile phone signal strength may be very weak, resulting in poor communication quality or inability to establish normal communication with the base station. Because signal strength is also affected by the vehicle itself, the signal strength may differ when the antenna is inside the vehicle (e.g., a Leaf). For example, the terminal's received signal strength RSRP may reach a maximum value of -60 dBm. When the vehicle speed is lower or higher than the reference speed of 250 km / h, the RSRP decreases accordingly, resulting in signal attenuation, making the signal strength inside the vehicle lower than the signal strength outside the vehicle. In this case, an uplink / downlink adjustment method may be invoked, specifically, the extended uplink and extended downlink operating modes. For example, as an extended uplink operating mode, several operating modes such as Pmax+1, Pmax+2, Pmax+3, Pmax+4, and Pmax+n are set based on the default maximum transmit power Pmax=23. The current maximum power limit value of the terminal is increased, and the multi-tone power ratio (MTPR) power backoff value of each modulation method (Quadrature Phase Shift Keying (QPSK), 16 Quadrature Amplitude Modulation (QAM), 64QAM, and 256QAM) is reduced, thereby making the maximum output power backoff under high-order modulation 0 or reduced. As an extended downlink operating mode, the current minimum receiving level limit of the terminal is increased based on the default minimum receiving level (e.g., RSRPmin = -125 dBm), and several operating modes such as RSRPmin-1, RSRPmin-2, RSRPmin-3, and RSRPmin-n are set, and at the same time, NR MIMO modes such as 2*2 MIMO and 4*4 MIMO are forcibly turned on to improve the sensitivity of the terminal and increase the minimum receiving level range. In one example, the transmit power may also be referenced to determine whether to trigger uplink / downlink adjustment.Specifically, it detects the terminal's current transmission power and received signal strength (RSSI or RSRP), reads the model signal parameters of the currently connected cell base station, and if it matches the terminal, performs uplink / downlink adjustment; otherwise, it does not.

[0036] The system architecture for upstream and downstream adjustment is shown in Figure 6. The first part is parameter limit value extension, which achieves Pmax extension by changing the internal parameter configuration of the terminal, such as the high-pass platform registry NV item. The second part is driver configuration extension, which achieves Pmax extension by changing the internal driver file of the terminal, such as the Encrypting File System (EFS). The third part is RF circuit path extension, which achieves Pmax extension by changing the transmit or receive circuit path within the terminal to adopt a loss-first path or bypass path. The fourth part is enabled in high-pass mode by an external power amplifier (PA) or low-noise amplifier (LNA) circuit or module, achieving Pmax extension.

[0037] For example, in the case of the SRS prediction movement method, the terminal has SRS and PMI signal reporting and feedback mechanisms. However, because the terminal's position relative to the base station changes frequently during high-speed train travel, the information fed back by SRS is significantly affected, making it difficult to accurately report uplink information. The terminal detects its signal strength and compares it with pre-set SRS thresholds to determine the strength of the electric field. The SRS mode is then controlled accordingly. If the electric field is moderate, an SRS report is sent; if the electric field is weak, a PMI report is sent because the uplink signal is weak. At the same time, as shown in Figure 7, the SRS operation mode, such as PMI, 1T2R (one transmit antenna and two receive antennas), 1T4R (one transmit antenna and four receive antennas), or 2T4R (two transmit antennas and four receive antennas), is adjusted based on the terminal's direction of travel and signal strength prediction. Request For Comments (RFC), abbreviated as RFC, is a series of memos issued by the Internet Engineering Task Force that collect Internet-related information. In one example, the step of obtaining a frequency offset value and compensating the communication mode of the terminal according to the frequency offset value includes the steps of calculating a frequency offset value according to the traveling speed and a Doppler shift, compensating both the received signal and the transmitted signal according to the frequency offset value, and adjusting the antenna center frequency of the terminal according to the frequency offset value. When a terminal travels at high speed with a train, a frequency offset occurs when the terminal receives a signal transmitted from a base station due to the Doppler effect. The higher the traveling speed, the larger the frequency offset, e.g., f_400km / h > f_350km / h > f_300km / h > f_250km / h > f_200km / h. The higher the center frequency, the larger the frequency offset, i.e., N79 > N78 > N41 > N1 > N3. Frequency offset leads to degradation of mobile phone performance. When a mobile phone is close to a base station, the frequency offset is positive, and when a mobile phone is far from a base station, the frequency offset is negative. The correspondence relationship between typical traveling speeds and frequency offset values is shown in Figure 8.The formula for the Doppler frequency offset of a terminal is fp(f)=fc(v / c)cosθ(t), where fp is the frequency offset value, fc is the carrier frequency, v is the terminal speed, c is the speed of light, and θ is the angle between the terminal's direction of movement and the cell base station, where

[0038]

number

[0039] where Ds is the distance traveled by the terminal, and Ds, θ, and Dmin are shown in Figure 9. The uplink and downlink spectrum values are calculated by detecting the current vehicle speed and the channel number on which the mobile phone operates, and then it is determined whether the uplink or downlink service is currently dominant and frequency compensation is performed. Specifically, for example, the terminal adjusts the receiving frequency of the receiving chip according to the frequency offset of the uplink signal transmitted from the base station, thereby canceling out the uplink Doppler frequency offset caused by high-speed driving.

[0040] The process of implementing the frequency offset compensation method is as follows: In step 1, the terminal's current speed is detected and calculated. In step 2, the angle between the train's direction of travel and the base station is calculated based on the detected current speed. In step 3, the frequency offset value of the current received signal is calculated using the Doppler method. In step 4, the Doppler frequency offset value is added to the terminal's received signal to offset the frequency offset value of the terminal's received signal. A pre-processing frequency offset compensation algorithm (i.e., compensation is similarly performed according to the frequency offset value) is applied to the terminal's transmitted signal to ensure that the wireless signal reaches the base station at the correct frequency. At the same time, the terminal may use an antenna tuning chip to tune the antenna center frequency to the frequency offset value to extend the detected received signal value. Specifically, the terminal performs adaptive frequency processing based on the frequency offset value obtained by referring to the calculated or preset relationship standard between the speed and frequency offset, collects the frequency offset of the first access, performs coarse frequency offset adjustment based on non-volatile (NV) parameters, then collects the frequency offset value in real time and fine-tunes the clock parameters C1, C2, and C3 of the clock oscillator (XO) to adjust the terminal frequency, thereby keeping the terminal frequency and the base station frequency within a certain threshold range so that the terminal can achieve modulation and demodulation. The adjustment is performed based on the terminal's own frequency error parameters, channel quality error vector magnitude (EVM), and block error rate (BLER). The adjustment is completed when demodulation is normal, the frequency error is within the standard deviation, and the EVM is within the threshold range of the corresponding modulation method.At the same time, frequency adjustment control can be achieved by changing the center and reference frequency values by switching the type, center frequency, and peripheral capacitance value of the XO and temperature compensated crystal oscillator (TCXO), and adjusting the local frequency of the mobile phone to match the carrier frequency of the base station cell, thereby achieving network synchronization between the mobile phone and the base station. That is, real-time, fast, and accurate adaptive frequency adjustment is achieved through frequency offset prediction and frequency offset compensation until the mobile phone can successfully register and perform network detection and demodulation.

[0041] In one example, the networking adjustment, cell switching compensation adjustment, or attenuation compensation adjustment according to the operation scenario includes: monitoring networking signals and pre-calculating attenuation to achieve pre-switching of networking when a networking mode switch in the network switching is higher than a first switching threshold; detecting signal quality when a cell switching frequency in the network switching is higher than a second switching threshold, prioritizing sorting in descending order of the signal quality, and achieving connection according to the priority order; and, when the operation scenario is a preset operation scenario, causing the terminal to perform adaptive signal adjustment according to a preset route. That is, different operation scenarios have corresponding processing methods. In route-network matching, the route can be understood as the traveling route of a mobile vehicle (e.g., a high-speed rail train) carrying the terminal, base stations are arranged along the traveling route of the train, and the network is a current communication network (e.g., a 5G communication network), including an NSA network, an SA network, and an LTE network. The route-network matching here includes the following parts:

[0042] The first part is adaptive switching adjustment between NSA / SA / LTE. That is, when the networking mode switching in network switching is higher than a first switching threshold, the networking signal is monitored and pre-switching of networking is realized by pre-calculating attenuation. Here, network switching control is realized through network signal detection and pre-calculation of attenuation. For example, the terminal monitors the signal strength of LTE and NR in real time, and switches the terminal mode from NSA to SA when the LTE anchor signal is weak or disappears. When the NR signal is lower than the preset NR threshold, the terminal pre-switches to LTE mode or another network mode, thereby ensuring the continuity of NSA / SA / LTE signals and preventing problems such as registration connection failures and network connection interruptions caused by frequent cell slicing. Specifically, the LTE anchor signal is divided into M1, M2, M3, M4, M5, and M6 stages, which correspond to -50 dBm, -60 dBm, -70 dBm, -80 dBm, -90 dBm, and -100 dBm, respectively. The signal attenuation within a unit distance is set to S. By detecting the LTE and NR signals of the current terminal, the current service demand of the terminal, which includes two parts: throughput demand and call service demand, is detected, and it is determined whether the currently required mode is LTE, NSA, or SA according to the service demand. In the current NSA mode, the LTE anchor signal strength must be above -80dBm, and the NR signal strength must be above -85dBm. The current terminal signal strength is detected as -75dBm for LTE and -80dBm for NR. In the next sampling time slot, the terminal moves forward 500m and moves away from the LTE base station. The calculated LTE signal strength decreases by 5dBm, and a certain threshold margin, such as 3dBm, is added. That is, the terminal's maximum predicted signal strength in the next LTE time slot is -83dBm, which is lower than the LTE anchor access threshold requirement. Because the current LTE anchor signal is weak, the network connection is cut off. At this time, the terminal can advance one time slot to switch to SA mode, thereby ensuring the continuity of the mobile phone network signal.The switching control is achieved by forcibly changing the network configuration through the mobile phone's software interface.

[0043] The second part is NR cell switching compensation adjustment. That is, when the cell switching frequency in network switching is higher than the second switching threshold, signal quality is detected, and priority sorting is performed in descending order of signal quality, and connection is achieved according to the priority order. In some embodiments, when a train is traveling at the edge of two cells, as shown in FIG. 10, the middle is the train, and the two locations on the left and right are two cell base stations. The figure shows that the train is at the intersection of the edges of the two cell base stations. The terminal's signal is in an extremely weak range or is in a state of repeatedly switching between two cells, i.e., sometimes connecting to cell A and sometimes connecting to cell B. In this case, the adjustment method first detects the uplink and downlink throughput levels and signal quality of the two cells and determines the cell with a higher priority. The signal quality detection may include obtaining and detecting each parameter mentioned in step 101 above. The terminal preferentially registers with the cell with the higher network connection quality. At the same time, when it is detected that it is near the edge of the cell, the terminal turns on the auxiliary expansion adjustment function, increases the transmission power and reception sensitivity of the current terminal, and realizes normal connection communication of the network.

[0044] The third part is a wireless signal path attenuation compensation adjustment at the terminal side. That is, when the driving scene is a preset driving scene, adaptive adjustment is performed according to the signal attenuation corresponding to the preset driving scene. For example, compensation adjustment is performed according to the wireless signal attenuation at the location of the mobile vehicle carrying the terminal. During the travel of a mobile vehicle, it passes through mountains, rivers, tunnels, valleys, jungles, overpasses, stations, suburbs, villages, plains, urban areas, etc., and various obstacles present in these driving scenes affect the transmission, scattering, refraction, and attenuation of the wireless signal between the terminal and the base station. Therefore, by presetting attenuation parameters or modes that may occur in the preset driving scene, the terminal can perform adaptive adjustment according to the preset driving scene.

[0045] In some embodiments, the step of acquiring the terminal operating status includes periodically acquiring the terminal operating status according to a preset time interval and performing a corresponding adjustment method. If the preset time interval is sufficiently small, i.e., the terminal operating status is detected in real time and corresponding adjustment is performed, it is possible to ensure that the terminal's network performance always meets user needs and improve the user experience. After acquiring the terminal operating status, if the terminal's operating status is detected as normal, i.e., each parameter is within a reasonable threshold range (a threshold range that can optimize the terminal's network performance), no adjustment is required this time. If the parameters fed back after adjustment and acquired again are not within a reasonable threshold range, it indicates that a next adjustment is required until the parameters meet the threshold requirements.

[0046] In some embodiments, the terminal moves at a high speed (e.g., the terminal is in a mobile vehicle such as a high-speed rail train), and factors such as frequent cell switching and attenuation, refraction, and reflection of 5G signals inside and outside the vehicle have various effects on communication performance in both stationary and moving states, causing problems such as intermittent signals, inability to detect the network, frequent call drops, low uplink and downlink throughput rates, low response rates, and call freezing. First, the high-speed movement of the mobile vehicle carrying the terminal causes a Doppler effect on the communicating terminal, which leads to a frequency offset, which can cause the terminal to fail to demodulate or perform poorly, further impairing the quality of uplink and downlink communications. That is, a sudden change in the distance between the mobile terminal and the base station results in a certain frequency difference between the final received frequency and the center frequency. As the distance between the terminal and the base station becomes closer, the frequency becomes larger and the frequency offset becomes smaller. As the distance between the mobile terminal and the base station becomes farther, the frequency becomes smaller and the frequency offset becomes larger. The faster the device moves, the greater the frequency offset; the higher the frequency, the greater the frequency offset. At speeds above 200 km / h, the impact of frequency offset due to the Doppler effect is significant. Taking N78 as an example, at a speed of 350 km / h, the uplink frequency offset is greater than 3 kHz and the downlink frequency offset is greater than 16 kHz. Next, frequent cell switching during operation of a mobile device equipped with a device can cause network connection interruptions, dropped calls, and unstable throughput. Due to the limited number of base stations, the coverage areas of different base stations are also limited. Currently, the three major operators' 5G base station spacing standards for high-frequency bands such as N78 / N41 are generally planned to be 450 meters for densely populated cities, 700 meters for urban areas, 1.3 kilometers for suburban areas, and 1.5 to 2 kilometers for rural areas. At lower frequencies, base station coverage is slightly greater, e.g., 4 to 5 kilometers. Therefore, when a 5G terminal moves at high speed within a mobile vehicle equipped with the terminal, it often passes through multiple cell base stations within a few seconds or tens of seconds, that is, it often encounters different cell switching and cell edge operating scenes.Frequent switching of accessing cells and frequent operation at cell edge locations with weak signals can lead to 5G network connection interruptions, difficulty in accessing the network, and unstable signals, thereby impairing users' 5G experience. Furthermore, during the process of communication between base stations and trains using wireless cellular signals, fluctuations in wireless signals due to changes in the train itself and the surrounding environment can lead to degradation of 5G communication quality. Specifically, during operation, a train is subject to the effects of mountains, rivers, valleys, trees, and other high-rise buildings. These obstacles, as well as the metal frame of the train itself, glass windows, and compartments separated by sliding doors, can cause some reflection, refraction, and attenuation of the 5G signal. During operation, the complexities of the terminal's location, such as crowds, mobility, shielding, and obstructions, cause the terminal's multiple NR MIMO antennas to exhibit different angles and speeds relative to the base station cell antenna, significantly affecting transmission and reception performance under different scene conditions and further impacting throughput performance and call quality. Finally, when a mobile vehicle travels at a high speed, for example, when the current speed is about 350Km / h to 500Km / h, the relative positions of the base station and the mobile phone change rapidly, which causes distance and delay problems to become increasingly significant. Therefore, according to the method of this embodiment, an adjustment system as shown in Figure 11 can be configured. The high-speed scene detection module L1 detects the current operating scene of the terminal, the network quality and speed detection module L2 detects the current operating speed of the terminal and network performance, the high-speed mode matching module L3 detects whether the current operating state (including operating speed, operating scene, and network quality) meets the adjustment conditions corresponding to which adjustment method, the parameter model module L4 stores the parameter information obtained in the current calculation or related, the adaptive control module L5 calls the corresponding adjustment module according to the processing results of the L3 and L4 modules, the uplink / downlink expansion module L6 implements the uplink / downlink adjustment method, the frequency offset compensation adjustment module L7 implements the frequency offset compensation method, the SRS prediction movement algorithm module L8 implements the SRS prediction movement method, and the route network matching adjustment module L9 implements the route network matching method.

[0047] This embodiment collects high-speed driving scenes and employs auxiliary identification functions to collect scenes from stations, exits, and inside and outside of vehicles, thereby solving the problem of inability to identify interior scenes during high-speed driving due to weak GPS signals. In high-speed driving, enhanced uplink and enhanced downlink modes are employed to enhance signal strength, solving the problem of weak coverage and preventing network connection interruptions while moving. Matching processes for related issues are performed using a predicted SRS high-speed movement algorithm, a vehicle speed antenna matching algorithm, a route link terminal matching method, and an algorithm for enhancing terminal performance through cell edge detection, and switching between NSA and SA modes can solve the problem of unstable LTE anchors. Finally, high-speed scenes and whether the user is inside, outside, in a waiting room, or at an exit can be quickly identified, without relying on GPS positioning, preventing the problem of inaccurate GPS positioning indoors. The user's current speed and stationary or moving state can be quickly identified. The communication quality problem caused by weak signals in high-speed scenes can be resolved. The problem of spectrum offset caused by high-speed movement of a mobile vehicle equipped with a terminal can be resolved. It can solve the problem of poor mobile phone performance and ineffective SRS adjustment due to the fast movement of mobile devices equipped with terminals in high-speed moving scenes. It can solve the problem of obstruction and interference caused by obstacles during high-speed driving. It can solve the problem of large signal fluctuations of terminals at cell edges due to frequent cell switching during high-speed driving. It can solve the problem of difficulty in selecting network standards during high-speed driving, and NSA and SA slices can be preferentially selected based on a certain algorithm. It can solve the problem of limited network throughput when there are a large number of people in high-speed driving scenes.

[0048] In this embodiment, a terminal communication mode adjustment method is provided, in which N adjustment methods are pre-set, each corresponding to a different adjustment condition, where N is an integer greater than or equal to 2, and the operation state of the terminal is obtained, the adjustment conditions met by the operation state of the terminal are identified, a corresponding adjustment method is matched according to the adjustment conditions, and the communication mode of the terminal is adjusted according to the adjustment method. The matching adjustment method is called, and the communication function of the terminal in different operating scenarios, operating speeds, and different network performances is actively improved, thereby improving the communication quality of the terminal and improving the user experience.

[0049] The division of steps in each method above is for the purpose of clarity only, and in implementation, they may be merged into one step or a specific step may be decomposed into multiple steps, as long as the same logical relationship is included, and are within the scope of protection of this patent. Any insignificant changes or insignificant design changes made to the algorithm or process, as long as the core design of the algorithm and process is not changed, are also within the scope of protection of this patent.

[0050] One embodiment of the present invention relates to a communication mode adjusting device for a terminal, and as shown in FIG. 12, the communication mode adjusting device for the terminal comprises: An acquisition unit 201 for acquiring a running state of a terminal, the running state including one of a running scene, a network performance, and a running speed, or any combination thereof; a matching unit 202 for matching a corresponding adjustment method according to the running state, the adjustment method corresponding to each different running state, and N kinds of adjustment methods are preset, where N is an integer greater than 1; and an execution unit 203 for adjusting the communication mode of the terminal according to the adjustment method.

[0051] Regarding the acquisition unit 201, in one example, when the operating state includes an operating scene, the method for acquiring the operating state of the terminal includes one or any combination of the following: a method for acquiring location information of the terminal by a cell base station and a global positioning system (GPS), and acquiring the operating scene of the terminal according to the location information; a method for collecting environmental characteristic parameters by a camera of the terminal, and acquiring the operating scene of the terminal according to the environmental characteristic parameters; and a method for detecting radiation characteristics of the surrounding environment of the terminal by electromagnetic waves, and acquiring the operating scene of the terminal according to the radiation characteristics, wherein the radiation characteristics include direct radiation, reflection, scattering and / or diffraction characteristics.

[0052] In one example, when the operating state includes an operating speed, the method for acquiring the operating state of the terminal includes one of a method for acquiring the operating speed of the terminal according to a GPS positioning distance and a positioning time difference corresponding to the positioning distance, and a method for acquiring the operating speed of the terminal according to an SRS feedback time difference and an angle difference corresponding to the feedback time difference, or any combination thereof.

[0053] In one example, the step of acquiring the operating status of the terminal includes periodically acquiring the operating status of the terminal according to a preset time interval.

[0054] For the matching unit 202, in one example, the adjustment scheme includes one or any combination of an uplink / downlink adjustment scheme, a frequency offset compensation scheme, a channel sounding reference signal (SRS) prediction movement scheme, and a path network matching scheme.

[0055] In one example, the step of matching a corresponding adjustment method according to the driving state includes one or any combination of the following: matching the uplink / downlink adjustment method when the signal strength of the network performance in the driving state is lower than a predetermined signal strength threshold; matching the frequency offset compensation method when the driving speed in the driving state is higher than a predetermined speed; matching the SRS prediction movement method when the throughput of the network performance is lower than a predetermined throughput threshold; matching the route network matching method when the network switching frequency of the network performance in the driving state is higher than a predetermined switching frequency threshold; and matching the route network matching method when the driving scene is a predetermined driving scene.

[0056] Regarding the execution unit 203, in one example, the step of adjusting the communication mode of the terminal according to the adjustment method includes one or any combination of the following: when matching the uplink / downlink adjustment method, adjusting a maximum power value and a minimum received level value of the terminal; when matching the frequency offset compensation method, obtaining a frequency offset value and compensating the communication mode of the terminal according to the frequency offset value; when matching the SRS prediction movement method, scheduling an SRS resource configuration or a precoding matrix indicator (PMI) resource configuration according to the channel strength of the network performance; and when matching the path network matching method, performing network adjustment, cell switching compensation adjustment, or path attenuation compensation adjustment according to the operation scenario.

[0057] In one example, the step of obtaining a frequency offset value and compensating the communication mode of the terminal according to the frequency offset value includes the steps of calculating a frequency offset value according to the traveling speed and the Doppler angle, compensating both a received signal and a transmitted signal according to the frequency offset value, and adjusting an antenna center frequency of the terminal according to the frequency offset value.

[0058] In one example, the networking adjustment, cell switching compensation adjustment, or attenuation compensation adjustment according to the operating scene includes: when a networking method switching in the network switching is higher than a first switching threshold, monitoring a networking signal and realizing pre-switching of networking by pre-calculating attenuation; when a cell switching frequency in the network switching is higher than a second switching threshold, detecting signal quality, performing priority sorting in descending order of the signal quality, and realizing connection according to the order of priority; and when the operating scene is a preset operating scene, performing adaptive adjustment according to signal attenuation corresponding to the preset operating scene.

[0059] It should be noted that this embodiment is a system example corresponding to the above embodiment and can be implemented in conjunction with the above embodiment. The relevant technical details mentioned in the above embodiment are also valid for this embodiment, and to reduce redundancy, detailed descriptions will be omitted here. Correspondingly, the relevant technical details mentioned in this embodiment can also be applied to the above embodiment.

[0060] Note that each module according to this embodiment is a logical module, and in reality, one logical unit may be one physical unit, may be part of one physical unit, or may be realized by a combination of multiple physical units. Furthermore, in order to emphasize the innovative aspects of this application, this embodiment does not introduce units that are not particularly relevant to solving the technical problem of this application, but this does not mean that other units do not exist in this embodiment.

[0061] One embodiment of the present invention relates to a terminal, the terminal including at least one processor 301 and a memory 302 communicatively connected to the at least one processor 301, as shown in FIG. 13, wherein the memory stores instructions executable by the at least one processor, and when the instructions are executed by the at least one processor, the at least one processor can perform a communication mode adjustment method for the terminal.

[0062] Here, the memory and the processor are connected by a bus system, which may include any number of interconnected buses or bridges, and which connects one or more processors and various circuits of the memory together. The bus may also connect various other circuits, such as peripheral devices, regulators, and power management circuits, all of which are known to those skilled in the art and will not be further described herein. The bus interface provides an interface between the bus and the transceiver. The transceiver provides a unit for communicating with various other devices over a transmission medium and may be a single element or multiple elements, such as multiple receivers and transmitters. Data processed by the processor is transmitted over a wireless medium via an antenna, which receives data and transmits it to the processor.

[0063] The processor is responsible for managing the bus and general processing and may provide a variety of functions including timing, peripheral interfacing, voltage regulation, power management, and other control functions, while the memory may be used to store data used by the processor in performing operations.

[0064] One embodiment of the present invention relates to a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above method embodiments.

[0065] That is, it is understood by those skilled in the art that realizing all or part of the steps in the methods of the above embodiments can be achieved by a program instructing related hardware. The program is stored in a storage medium and includes several instructions for causing a device (which may be a microcontroller, a chip, etc.) or a processor to execute all or part of the steps of the methods of the various embodiments of the present application. Meanwhile, the storage medium includes various media capable of storing program code, such as a USB memory, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0066] As will be understood by those skilled in the art, the above-described embodiments are specific examples for implementing the present invention, and in actual applications, various changes in form and details are possible without departing from the spirit and scope of the present invention.

Claims

1. A method for adjusting a communication mode of a terminal, comprising: The communication mode adjustment method of the terminal includes: Acquiring a running state of the terminal, the running state including a running scene and a network performance, or including a running scene, a network performance, and a running speed; determining a matching adjustment method from among a plurality of preset adjustment methods according to the operation state, the operation state satisfying an adjustment condition corresponding to the matching adjustment method, and each of the adjustment methods corresponding to a different adjustment condition; adjusting a communication mode of the terminal according to the matching adjustment method; The step of determining a matching adjustment method according to the driving state includes: If the throughput of the network performance is lower than a preset throughput threshold, determining that the matching adjustment mode is a channel sounding reference signal (SRS) prediction mobility mode; If the driving scene is a preset driving scene, determining that the matching adjustment manner is a route network matching manner; Including, The step of adjusting the communication mode of the terminal according to the matching adjustment method includes: If the matching adjustment mode is the SRS prediction mobility mode, scheduling an SRS resource configuration or a precoding matrix indicator (PMI) resource configuration according to a channel strength of the network performance; If the matching adjustment method is the route network matching method, performing network adjustment, cell switching compensation adjustment, or route attenuation compensation adjustment according to the driving scenario; Including, How to adjust the communication mode of the terminal.

2. The adjustment method is: The communication mode adjustment method of claim 1 , further comprising at least one of an uplink / downlink adjustment scheme and a frequency offset compensation scheme.

3. The step of determining a matching adjustment method according to the driving state includes: determining that the matching conditioning mode is the uplink / downlink conditioning mode when the signal strength of the network performance is lower than a preset signal strength threshold; determining that the matching adjustment method is the frequency offset compensation method when the operating speed is higher than a preset speed; and determining that the matching adjustment method is the route network matching method when a network switching frequency of the network performance is higher than a preset switching frequency threshold.

4. The step of adjusting the communication mode of the terminal according to the matching adjustment method includes: If the matching adjustment mode is the uplink / downlink adjustment mode, adjusting a maximum power value and a minimum reception level value of the terminal; and if the matching adjustment scheme is the frequency offset compensation scheme, acquiring a frequency offset value; and compensating the communication mode of the terminal according to the frequency offset value.

5. The step of obtaining a frequency offset value and compensating a communication mode of the terminal according to the frequency offset value includes: calculating a frequency offset value according to the travel speed and the Doppler shift rate; compensating both the received signal and the transmitted signal in response to the frequency offset value; and adjusting an antenna center frequency of the terminal according to the frequency offset value.

6. The networking adjustment, cell switching compensation adjustment, or attenuation compensation adjustment according to the driving scenario is: When the networking mode switching frequency is higher than a first switching threshold, monitoring the networking signal and realizing pre-switching of the networking by pre-calculating the attenuation; When the cell switching frequency is higher than a second switching threshold, detecting signal quality, performing priority sorting in descending order of the signal quality, and realizing connection according to the order of priority; and if the driving scene is a preset driving scene, performing adaptive adjustment according to signal attenuation corresponding to the preset driving scene.

7. The step of acquiring the operation status of the terminal includes:

2. The method of claim 1, further comprising the step of periodically acquiring the operating status of the terminal according to a preset time interval.

8. When the operation state includes an operation scene, the step of acquiring the operation state of the terminal includes: A method for acquiring location information of the terminal by a cell base station and a global positioning system (GPS), and acquiring a driving scene of the terminal according to the location information; A method for collecting environment characteristic parameters by a camera of the terminal, and capturing a driving scene of the terminal according to the environment characteristic parameters; Detecting radiation characteristics of the surrounding environment of the terminal by electromagnetic waves, and acquiring a driving scene of the terminal according to the radiation characteristics, wherein the radiation characteristics include direct radiation, reflection, scattering, and / or diffraction characteristics.

9. When the driving status includes a driving speed, the step of acquiring the driving status of the terminal includes: A method for acquiring a running speed of the terminal according to a GPS positioning distance and a positioning time difference corresponding to the GPS positioning distance; and a method for acquiring a traveling speed of the terminal according to an SRS feedback time difference and an angle difference corresponding to the SRS feedback time difference.

10. A communication mode adjustment device for a terminal, comprising: An acquisition unit for acquiring a running state of the terminal, the running state including a running scene and a network performance, or an acquisition unit including a running scene, a network performance, and a running speed; a matching unit that determines a matching adjustment method from among a plurality of preset adjustment methods according to the operation state, the operation state satisfying an adjustment condition corresponding to the matching adjustment method, and each of the adjustment methods corresponding to a different adjustment condition; an execution unit for adjusting a communication mode of the terminal according to the matching adjustment method; The matching unit is configured to: determine that the matching adjustment manner is a channel sounding reference signal (SRS) prediction movement manner when the throughput of the network performance is lower than a preset throughput threshold; and determine that the matching adjustment manner is a route network matching manner when the driving scene is a preset driving scene; The execution unit is configured to schedule an SRS resource configuration or a precoding matrix indicator (PMI) resource configuration according to the channel strength of the network performance, and to perform networking adjustment, cell switching compensation adjustment, or path attenuation compensation adjustment according to the operation scene. A communication mode adjustment device for a terminal.

11. at least one processor; a memory communicatively connected to the at least one processor; A terminal, wherein the memory stores instructions executable by the at least one processor, the instructions, when executed by the at least one processor, causing the at least one processor to perform a terminal communication mode adjustment method according to any one of claims 1 to 9.

12. A computer-readable storage medium having a computer program stored thereon, the computer program implementing the method for adjusting a communication mode of a terminal according to any one of claims 1 to 9 when executed by a processor.

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