WO2023124186A1

WO2023124186A1 - Communication method and communication apparatus

Info

Publication number: WO2023124186A1
Application number: PCT/CN2022/116809
Authority: WO
Inventors: 赵辰; 李重锦
Original assignee: 荣耀终端有限公司
Priority date: 2021-12-27
Filing date: 2022-09-02
Publication date: 2023-07-06
Also published as: CN114710812B; CN114710812A

Abstract

The present application relates to the field of communications, and provides a communication method and a communication apparatus. The method is applied to a terminal device. The terminal device communicates with a network device by means of a high-frequency signal and a low-frequency signal, and the method comprises: when a received signal strength of a high-frequency uplink signal is less than a first threshold, in response to the scheduling of the network device, the terminal device switching a data frame and control information transmitted on the high-frequency uplink signal to be transmitted on a low-frequency uplink signal, and switching control information transmitted on a high-frequency downlink information to be transmitted on a low-frequency downlink signal; and keeping a data frame transmitted on the high-frequency downlink signal transmitted on the high-frequency downlink signal. The communication method and the communication apparatus can improve the transmission bandwidth when the terminal device is far away from the network device.

Description

Communication method and communication device

This application claims the priority of the Chinese patent application filed with the State Intellectual Property Office on December 27, 2021, with application number 202111609925.2, and the application title is "Method and device for sending or receiving response messages", and filed on February 28, 2022 The priority of the Chinese patent application with the application number 202210193767.5 and the application name "Communication Method and Communication Device" filed with the State Intellectual Property Office on 11 December 2020, the entire contents of which are incorporated in this application by reference.

technical field

The present application relates to the communication field, and in particular to a communication method and a communication device.

Background technique

Terminal devices and network devices (such as routers) can communicate through wireless signals. Some terminal devices can communicate with network devices through multiple frequency bands. For example, terminal devices can communicate with network devices through 5G signals and 2.4G signals. .

Due to the high attenuation characteristics of high-frequency electromagnetic waves, the coverage of high-frequency (such as 5G) signals is smaller than that of low-frequency (such as 2.4G) signals. Network devices communicate. However, the bandwidth of the low-frequency signal is smaller than that of the high-frequency signal. How to increase the transmission bandwidth when the terminal device is far away from the network device is a problem that needs to be solved at present.

Contents of the invention

Embodiments of the present application provide a communication method, a communication device, a computer-readable storage medium, and a computer program product, which can improve transmission bandwidth when a terminal device is far away from a network device.

In a first aspect, a communication method is provided, which is applied to a network device, and the network device communicates with a terminal device through a high-frequency signal and a low-frequency signal, and the method includes: when the received signal strength of the high-frequency uplink signal is less than a first threshold , the network device switches the data frame and control information transmitted by the high-frequency uplink signal to the low-frequency uplink signal for transmission; switches the control information transmitted by the high-frequency downlink signal to the low-frequency downlink signal; keeps the data frame transmitted by the high-frequency downlink signal at High frequency downlink signal transmission.

When the received signal strength of the high-frequency uplink signal is less than the first threshold, it means that the terminal device is far away from the network device. Since the transmission power of the network device is large and the number of antennas is large, the high-frequency downlink signal of the network device can cover the terminal device. , therefore, the network device can transmit data frames through the high-frequency downlink signal to increase the transmission bandwidth; at this time, the terminal device transmits the feedback information through the low-frequency uplink signal, which can improve the coverage of the feedback information. Therefore, the embodiment of the present application utilizes the characteristics of the network device and the terminal device, uses different frequency bands to transmit uplink information and downlink information, and can increase the downlink transmission bandwidth without increasing the power consumption and the number of antennas of the terminal device.

In an optional implementation manner, the control information of the high-frequency downlink signal transmission includes a feedback request, and the feedback request is used to request the terminal device to send feedback information of the data frame transmitted by the high-frequency downlink signal.

In an optional embodiment, the feedback request is a block acknowledgment BA REQ, the feedback information is a block acknowledgment (block acknowledgment, BA), and the control information for high-frequency downlink signal transmission also includes adding a block acknowledgment request ADD BA REQ, ADD BA REQ is used to instruct the terminal device to start BA mode, and the sending time of ADD BA REQ is before BA REQ.

In some networks (such as Wi-Fi networks), there is no fixed time slot division. When a terminal device needs to use time-frequency resources, it usually needs to obtain channel resources through random competition. However, in some special scenarios, terminal devices do not need to compete for time-frequency resources, for example, short inter-frame space (SIFS ), the frequency band corresponding to the downlink information can be used by the terminal equipment receiving the downlink information.

Due to the large amount of data in the downlink data frame, the terminal device needs a long time to process the downlink data frame. If the mobile phone performs feedback based on the normal feedback (Normal ACK) mode, the time between the sending time of the feedback information and the sending time of the downlink data frame The interval often exceeds SIFS, causing the feedback message to fail to be sent.

If the terminal device performs feedback based on the BA mode, the terminal device usually has completed the reception and processing of the downlink data frame when receiving the 5G BA request, and can immediately send the feedback information (5G BA), the sending time of the 5G BA and the sending time of the 5G BA request The interval between them is usually within SIFS, and the terminal device can use the channel resources requested by 5G BA to send 5G BA without channel competition, thus avoiding the retransmission of downlink data frames caused by channel competition failure when sending feedback information.

In an optional implementation manner, the control information transmitted by the high-frequency uplink signal includes an added block response response ADD BA RES, ADD BA RES contains communication parameters of the BA mode, and the sending time of ADD BA RES is located before BA REQ and located at After ADD BA REQ.

In an optional implementation manner, the control information transmitted by the high-frequency downlink signal further includes a delete block response request DEL BA REQ, which is used to instruct the terminal device to close the BA mode, and the DEL BA REQ is located after the BA.

In an optional implementation manner, the method further includes: when the signal strength of the high-frequency uplink signal is less than a second threshold, the network device keeps the data frame and control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission ; Keep the control information of the low-frequency downlink signal transmission in the low-frequency downlink signal transmission; switch the data frame of the high-frequency downlink signal transmission to the low-frequency downlink signal transmission, wherein the second threshold is smaller than the first threshold.

When the signal strength of the high-frequency uplink signal is less than the second threshold, it means that the distance between the terminal device and the network device increases, and the terminal device is out of the coverage of the high-frequency downlink signal, and the data frame transmitted by the high-frequency downlink signal is switched to the low-frequency downlink The signal transmission can guarantee the normal communication of the data frame.

In an optional implementation manner, the method further includes: when the signal strength of the high-frequency uplink signal is greater than a third threshold, the network device keeps the data frame and control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission ; Keep the control information of the low-frequency downlink signal transmission in the low-frequency downlink signal transmission; switch the data frame of the low-frequency downlink signal transmission to the high-frequency downlink signal transmission, wherein the third threshold is greater than the second threshold and smaller than the first threshold.

The third threshold is greater than the second threshold, so that the network device and the terminal device can switch the communication mode only when the distance between them is close enough, avoiding the ping-pong switching effect caused when the terminal device moves back and forth at the coverage edge of the high-frequency downlink signal.

In an optional implementation manner, the method further includes: when the signal strength of the high-frequency uplink signal is greater than a fourth threshold, the network device switches the data frame and control information transmitted by the low-frequency uplink signal to the low-frequency uplink signal for transmission ; Switch the control information of the low-frequency downlink signal transmission to the high-frequency downlink signal transmission; keep the data frame of the low-frequency downlink signal transmission at the high-frequency downlink signal transmission, wherein the fourth threshold is greater than the first threshold.

The fourth threshold is greater than the first threshold, so that the network device and the terminal device can switch the communication mode only when the distance between them is close enough, avoiding the ping-pong switching effect caused when the terminal device moves back and forth at the coverage edge of the high-frequency downlink signal.

In the second aspect, another communication method is provided, which is applied to a terminal device. The terminal device communicates with a network device through a high-frequency signal and a low-frequency signal. The method includes: when the received signal strength of the high-frequency uplink signal is less than a first threshold When the terminal device responds to the scheduling of the network device, it switches the data frame and control information transmitted by the high-frequency uplink signal to the low-frequency uplink signal for transmission; switches the control information transmitted by the high-frequency downlink signal to the low-frequency downlink signal transmission; The data frames transmitted by the high-frequency downlink signal remain in the high-frequency downlink signal transmission.

When the signal strength of the high-frequency uplink signal is less than the first threshold, it means that the terminal device is far away from the network device. Since the transmission power of the network device is large and the number of antennas is large, the high-frequency downlink signal of the network device can cover the terminal device. Therefore, network devices can transmit data frames through high-frequency downlink signals to increase transmission bandwidth; at this time, terminal devices transmit feedback information through low-frequency uplink signals, which can improve the coverage of feedback information. Therefore, the embodiment of the present application utilizes the characteristics of the network device and the terminal device, uses different frequency bands to transmit uplink information and downlink information, and can increase the downlink transmission bandwidth without increasing the power consumption and the number of antennas of the terminal device.

In an optional implementation manner, the method further includes: when the signal strength of the high-frequency uplink signal is less than a second threshold, the terminal device maintains the data frame and control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission ; Keep the control information of the low-frequency downlink signal transmission in the low-frequency downlink signal transmission; switch the data frame of the high-frequency downlink signal transmission to the low-frequency downlink signal transmission, wherein the second threshold is smaller than the first threshold.

In an optional implementation manner, the method further includes: when the signal strength of the high-frequency uplink signal is greater than a third threshold, the terminal device maintains the data frame and control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission ; Keep the control information of the low-frequency downlink signal transmission in the low-frequency downlink signal transmission; switch the data frame of the low-frequency downlink signal transmission to the high-frequency downlink signal transmission, wherein the third threshold is greater than the second threshold and smaller than the first threshold.

In an optional implementation manner, the method further includes: when the signal strength of the high-frequency uplink signal is greater than the fourth threshold, the terminal device switches the data frame and control information transmitted by the low-frequency uplink signal to the low-frequency uplink signal for transmission ; Switch the control information of the low-frequency downlink signal transmission to the high-frequency downlink signal transmission; keep the data frame of the low-frequency downlink signal transmission at the high-frequency downlink signal transmission, wherein the fourth threshold is greater than the first threshold.

In a third aspect, a communication device is provided, including a unit for performing any method in the first aspect. The device may be a network device, or a chip in the network device. The apparatus may include a communication unit and a processing unit.

When the device is a network device, the processing unit may be a processor, and the communication unit may be a communication interface; the network device may also include a memory, and the memory is used to store computer program codes. When the computer program code is used, the network device is made to execute any one of the methods in the first aspect.

When the device is a chip in a network device, the processing unit may be a logic processing unit inside the chip, and the communication unit may be an output interface, a pin or a circuit, etc.; the chip may also include a memory, and the memory may be the chip The internal memory (for example, register, cache, etc.), can also be located in the memory outside the chip (for example, read-only memory, random access memory, etc.); the memory is used to store computer program code, when the processor executes the The computer program code stored in the memory causes the chip to execute any method of the first aspect.

In a fourth aspect, another communication device is provided, including a unit for performing any method in the second aspect. The device may be a terminal device, or a chip in the terminal device. The apparatus may include a communication unit and a processing unit.

When the device is a terminal device, the processing unit may be a processor, and the communication unit may be a communication interface; the terminal device may also include a memory, which is used to store computer program codes, and when the processor executes the When the computer program code is used, the terminal device is made to execute any one of the methods in the second aspect.

When the device is a chip in the terminal device, the processing unit may be a logical processing unit inside the chip, and the communication unit may be an output interface, a pin or a circuit, etc.; the chip may also include a memory, and the memory may be the The internal memory (for example, register, cache, etc.), can also be located in the memory outside the chip (for example, read-only memory, random access memory, etc.); the memory is used to store computer program code, when the processor executes the The computer program code stored in the memory causes the chip to execute any method of the second aspect.

In a fifth aspect, a computer-readable storage medium is provided, the computer-readable storage medium stores computer program code, and when the computer program code is run by a communication device, the device executes any one of the first aspect. way.

In a sixth aspect, a computer-readable storage medium is provided, the computer-readable storage medium stores computer program code, and when the computer program code is run by a communication device, the device executes any one of the second aspects. way.

In a seventh aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is executed by a communication device, the device is made to execute any one of the methods in the first aspect.

In an eighth aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is run by a communication device, the device is made to execute any one of the methods in the second aspect.

Description of drawings

Fig. 1 is a schematic diagram of a hardware system applicable to the device of the present application;

Figure 2 is an application scenario applicable to this application;

Fig. 3 is a schematic diagram of a communication method provided by the present application;

Fig. 4 is a schematic diagram of a communication scenario provided by this application

FIG. 5 is a schematic diagram of a communication method corresponding to the communication scenario shown in FIG. 4;

FIG. 6 is a schematic diagram of a BA mode provided by the present application;

Fig. 7 is a schematic diagram of another BA mode provided by the present application;

FIG. 8 is a schematic diagram of another communication scenario provided by the present application;

FIG. 9 is a schematic diagram of a communication method corresponding to the communication scenario shown in FIG. 8 .

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

Fig. 1 shows a hardware system applicable to the device of this application.

The device 100 may be a mobile phone, a smart screen, a tablet computer, a wearable electronic device, a vehicle electronic device, an augmented reality (augmented reality, AR) device, a virtual reality (virtual reality, VR) device, a notebook computer, an ultra mobile personal computer (ultra -mobile personal computer, UMPC), netbook, personal digital assistant (personal digital assistant, PDA), projector, router, etc., the embodiment of the present application does not impose any limitation on the specific type of the device 100.

The device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (universal serial bus, USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, Mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, earphone jack 170D, sensor module 180, button 190, motor 191, indicator 192, camera 193, display screen 194, and user An identification module (subscriber identification module, SIM) card interface 195 and the like. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, bone conduction sensor 180M, etc.

It should be noted that the structure shown in FIG. 1 does not constitute a specific limitation on the device 100 . In other embodiments of the present application, the device 100 may include more or fewer components than those shown in FIG. 1 , or the device 100 may include a combination of some of the components shown in FIG. 100 may include subcomponents of some of the components shown in FIG. 1 . The components shown in FIG. 1 can be realized in hardware, software, or a combination of software and hardware.

Processor 110 may include one or more processing units. For example, the processor 110 may include at least one of the following processing units: an application processor (application processor, AP), a modem processor, a graphics processing unit (graphics processing unit, GPU), an image signal processor (image signal processor) , ISP), controller, video codec, digital signal processor (digital signal processor, DSP), baseband processor, neural network processor (neural-network processing unit, NPU). Wherein, different processing units may be independent devices or integrated devices.

The controller can generate an operation control signal according to the instruction opcode and timing signal, and complete the control of fetching and executing the instruction.

A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in processor 110 is a cache memory. The memory may hold instructions or data that the processor 110 has just used or recycled. If the processor 110 needs to use the instruction or data again, it can be called directly from the memory. Repeated access is avoided, and the waiting time of the processor 110 is reduced, thereby improving the efficiency of the system.

In some embodiments, processor 110 may include one or more interfaces. For example, the processor 110 may include at least one of the following interfaces: an inter-integrated circuit (inter-integrated circuit, I2C) interface, an inter-integrated circuit sound (inter-integrated circuit sound, I2S) interface, a pulse code modulation (pulse code modulation, PCM) interface, universal asynchronous receiver/transmitter (UART) interface, mobile industry processor interface (MIPI), general-purpose input/output (GPIO) interface, SIM interface, USB interface.

The I2C interface is a bidirectional synchronous serial bus, including a serial data line (serial data line, SDA) and a serial clock line (derail clock line, SCL). In some embodiments, processor 110 may include multiple sets of I2C buses. The processor 110 may be respectively coupled to the touch sensor 180K, the charger, the flashlight, the camera 193 and the like through different I2C bus interfaces. For example, the processor 110 may be coupled to the touch sensor 180K through the I2C interface, so that the processor 110 and the touch sensor 180K communicate through the I2C bus interface to realize the touch function of the device 100 .

The I2S interface can be used for audio communication. In some embodiments, processor 110 may include multiple sets of I2S buses. The processor 110 may be coupled to the audio module 170 through an I2S bus to implement communication between the processor 110 and the audio module 170 . In some embodiments, the audio module 170 can transmit audio signals to the wireless communication module 160 through the I2S interface, so as to realize the function of answering calls through the Bluetooth headset.

The PCM interface can also be used for audio communication, sampling, quantizing and encoding the analog signal. In some embodiments, the audio module 170 and the wireless communication module 160 may be coupled through a PCM interface. In some embodiments, the audio module 170 can also transmit audio signals to the wireless communication module 160 through the PCM interface, so as to realize the function of answering calls through the Bluetooth headset. Both the I2S interface and the PCM interface can be used for audio communication.

The UART interface is a universal serial data bus used for asynchronous communication. The bus can be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, a UART interface is generally used to connect the processor 110 and the wireless communication module 160 . For example: the processor 110 communicates with the Bluetooth module in the wireless communication module 160 through the UART interface to realize the Bluetooth function. In some embodiments, the audio module 170 can transmit audio signals to the wireless communication module 160 through the UART interface, so as to realize the function of playing music through the Bluetooth headset.

The MIPI interface can be used to connect the processor 110 with peripheral devices such as the display screen 194 and the camera 193 . MIPI interface includes camera serial interface (camera serial interface, CSI), display serial interface (display serial interface, DSI), etc. In some embodiments, the processor 110 communicates with the camera 193 through the CSI interface to realize the shooting function of the device 100 . The processor 110 communicates with the display screen 194 through the DSI interface to realize the display function of the device 100 .

The GPIO interface can be configured by software. The GPIO interface can be configured as a control signal interface or as a data signal interface. In some embodiments, the GPIO interface can be used to connect the processor 110 with the camera 193 , the display screen 194 , the wireless communication module 160 , the audio module 170 and the sensor module 180 . The GPIO interface can also be configured as an I2C interface, I2S interface, UART interface or MIPI interface.

The USB interface 130 is an interface conforming to the USB standard specification, for example, it can be a mini (Mini) USB interface, a micro (Micro) USB interface or a C-type USB (USB Type C) interface. The USB interface 130 can be used to connect a charger to charge the device 100 , can also be used to transmit data between the device 100 and peripheral devices, and can also be used to connect an earphone to play audio through the earphone. The USB interface 130 can also be used to connect other devices 100, such as AR equipment.

The connection relationship between the modules shown in FIG. 1 is only a schematic illustration, and does not constitute a limitation on the connection relationship between the modules of the device 100 . Optionally, each module of the device 100 may also adopt a combination of various connection modes in the foregoing embodiments.

The charging management module 140 is used to receive power from the charger. Wherein, the charger may be a wireless charger or a wired charger. In some embodiments of wired charging, the charging management module 140 can receive the current of the wired charger through the USB interface 130 . In some wireless charging embodiments, the charging management module 140 can receive electromagnetic waves through the wireless charging coil of the device 100 (the current path is shown as a dotted line). While the charging management module 140 is charging the battery 142 , it can also supply power to the device 100 through the power management module 141 .

The power management module 141 is used for connecting the battery 142 , the charging management module 140 and the processor 110 . The power management module 141 receives the input from the battery 142 and/or the charging management module 140 to provide power for the processor 110 , the internal memory 121 , the display screen 194 , the camera 193 , and the wireless communication module 160 . The power management module 141 can also be used to monitor parameters such as battery capacity, battery cycle times, and battery health status (eg, leakage, impedance). Optionally, the power management module 141 may be set in the processor 110, or the power management module 141 and the charge management module 140 may be set in the same device.

The wireless communication function of the device 100 can be realized by components such as the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, and a baseband processor.

Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in device 100 may be used to cover single or multiple communication frequency bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: Antenna 1 can be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a wireless communication solution applied to the device 100, such as at least one of the following solutions: a second generation (2 ^th generation, 2G) mobile communication solution, a third generation (3 ^th generation, 3G ) mobile communication solutions, fourth generation (4 ^th generation, 5G) mobile communication solutions, fifth generation (5 ^th generation, 5G) mobile communication solutions. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA) and the like. The mobile communication module 150 can receive electromagnetic waves through the antenna 1, filter and amplify the received electromagnetic waves, and then send them to the modem processor for demodulation. The mobile communication module 150 can also amplify the signal modulated by the modem processor, and the amplified signal is converted into electromagnetic waves by the antenna 1 and radiated out. In some embodiments, at least part of the functional modules of the mobile communication module 150 may be set in the processor 110 . In some embodiments, at least part of the functional modules of the mobile communication module 150 and at least part of the modules of the processor 110 may be set in the same device.

A modem processor may include a modulator and a demodulator. Wherein, the modulator is used for modulating the low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low frequency baseband signal. Then the demodulator sends the demodulated low-frequency baseband signal to the baseband processor for processing. The low-frequency baseband signal is passed to the application processor after being processed by the baseband processor. The application processor outputs a sound signal through an audio device (for example, a speaker 170A, a receiver 170B), or displays an image or video through a display screen 194 . In some embodiments, the modem processor may be a stand-alone device. In some other embodiments, the modem processor may be independent from the processor 110, and be set in the same device as the mobile communication module 150 or other functional modules.

Similar to the mobile communication module 150, the wireless communication module 160 can also provide a wireless communication solution applied to the device 100, such as at least one of the following solutions: wireless local area networks (wireless local area networks, WLAN), bluetooth (bluetooth, BT) , Bluetooth low energy (bluetooth low energy, BLE), ultra wide band (ultra wide band, UWB), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field communication (near field communication) communication, NFC), infrared (infrared, IR) technology. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2 , frequency-modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110 . The wireless communication module 160 can also receive the signal to be transmitted from the processor 110 , frequency-modulate and amplify it, and convert the signal into electromagnetic wave and radiate it through the antenna 2 .

In some embodiments, the antenna 1 of the device 100 is coupled to the mobile communication module 150, and the antenna 2 of the device 100 is coupled to the wireless communication module 160, so that the electronic device 100 can communicate with the network and other electronic devices through wireless communication technology. The wireless communication technology may include at least one of the following communication technologies: global system for mobile communications (GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access (CDMA), wideband code division multiple access (WCDMA), time-division code division multiple access (TD-SCDMA), long term evolution (LTE), BT, GNSS, WLAN, NFC, FM, IR technology. The GNSS may include at least one of the following positioning technologies: global positioning system (global positioning system, GPS), global navigation satellite system (global navigation satellite system, GLONASS), Beidou satellite navigation system (beidou navigation satellite system, BDS), Quasi-zenith satellite system (QZSS), satellite based augmentation systems (SBAS).

The device 100 can realize the display function through the GPU, the display screen 194 and the application processor. The GPU is a microprocessor for image processing, and is connected to the display screen 194 and the application processor. GPUs are used to perform mathematical and geometric calculations for graphics rendering. Processor 110 may include one or more GPUs that execute program instructions to generate or change display information.

Display 194 may be used to display images or video. The display screen 194 includes a display panel. The display panel can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED), a flexible Light-emitting diode (flex light-emitting diode, FLED), mini light-emitting diode (mini light-emitting diode, Mini LED), micro light-emitting diode (micro light-emitting diode, Micro LED), micro OLED (Micro OLED) or quantum dot light emitting Diodes (quantum dot light emitting diodes, QLED). In some embodiments, the device 100 may include 1 or N display screens 194 , where N is a positive integer greater than 1.

The device 100 can realize the shooting function through ISP, camera 193 , video codec, GPU, display screen 194 and application processor.

The ISP is used for processing the data fed back by the camera 193 . For example, when taking a picture, open the shutter, the light is transmitted to the photosensitive element of the camera through the lens, and the light signal is converted into an electrical signal, and the photosensitive element of the camera transmits the electrical signal to the ISP for processing, and converts it into an image visible to the naked eye. ISP can optimize the algorithm of image noise, brightness and color, and ISP can also optimize parameters such as exposure and color temperature of the shooting scene. In some embodiments, the ISP may be located in the camera 193 .

Camera 193 is used to capture still images or video. The object generates an optical image through the lens and projects it to the photosensitive element. The photosensitive element may be a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The photosensitive element converts the light signal into an electrical signal, and then transmits the electrical signal to the ISP to convert it into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. DSP converts digital image signals into standard red green blue (red green blue, RGB), YUV and other image signals. In some embodiments, the device 100 may include 1 or N cameras 193 , where N is a positive integer greater than 1.

Digital signal processors are used to process digital signals. In addition to digital image signals, they can also process other digital signals. For example, when the device 100 selects a frequency point, the digital signal processor is used to perform Fourier transform on the energy of the frequency point.

Video codecs are used to compress or decompress digital video. Apparatus 100 may support one or more video codecs. In this way, the device 100 can play or record videos in various encoding formats, for example: moving picture experts group (moving picture experts group, MPEG) 1, MPEG2, MPEG3 and MPEG4.

NPU is a processor that draws on the structure of biological neural networks. For example, it can quickly process input information by drawing on the transmission mode between neurons in the human brain, and it can also continuously learn by itself. Functions such as intelligent cognition of the device 100 can be realized through the NPU, such as image recognition, face recognition, voice recognition and text understanding.

The external memory interface 120 can be used to connect an external memory card, such as a secure digital (secure digital, SD) card, to expand the storage capacity of the device 100 . The external memory card communicates with the processor 110 through the external memory interface 120 to implement a data storage function. Such as saving music, video and other files in the external memory card.

The internal memory 121 may be used to store computer-executable program codes including instructions. The internal memory 121 may include an area for storing programs and an area for storing data. Wherein, the storage program area can store an operating system and an application program required by at least one function (for example, a sound playing function and an image playing function). The data storage area can store data created during use of the device 100 (for example, audio data and phonebook). In addition, the internal memory 121 may include a high-speed random access memory, and may also include a non-volatile memory, for example: at least one magnetic disk storage device, flash memory device, and universal flash storage (universal flash storage, UFS), etc. The processor 110 executes various processing methods of the device 100 by executing instructions stored in the internal memory 121 and/or instructions stored in a memory provided in the processor.

The device 100 can implement audio functions, such as music playback and recording, through the audio module 170, the speaker 170A, the receiver 170B, the microphone 170C, the earphone interface 170D, and the application processor.

The audio module 170 is used to convert digital audio information into analog audio signal output, and can also be used to convert analog audio input into digital audio signal. The audio module 170 may also be used to encode and decode audio signals. In some embodiments, the audio module 170 or some functional modules of the audio module 170 may be set in the processor 110 .

Speaker 170A, also known as a horn, is used to convert audio electrical signals into sound signals. Device 100 may listen to music or make hands-free calls through speaker 170A.

Receiver 170B, also known as an earpiece, is used to convert audio electrical signals into audio signals. When the user uses the device 100 to answer calls or voice messages, he can listen to the voice by putting the receiver 170B close to the ear.

Microphone 170C, also known as microphone or microphone, is used to convert sound signals into electrical signals. When the user makes a call or sends a voice message, a sound signal may be input into the microphone 170C by uttering a sound close to the microphone 170C. The device 100 may be provided with at least one microphone 170C. In other embodiments, the device 100 may be provided with two microphones 170C to implement the noise reduction function. In some other embodiments, the device 100 may also be provided with three, four or more microphones 170C to realize functions such as identifying sound source and directional recording. The processor 110 can process the electrical signal output by the microphone 170C. For example, the audio module 170 and the wireless communication module 160 can be coupled through a PCM interface. The electrical signal is transmitted to the processor 110; the processor 110 performs volume analysis and frequency analysis on the electrical signal to determine the volume and frequency of the ambient sound.

The earphone interface 170D is used for connecting wired earphones. The earphone interface 170D may be a USB interface 130, or a 3.5mm open mobile terminal platform (OMTP) standard interface, or a cellular telecommunications industry association of the USA (CTIA) standard interface.

The pressure sensor 180A is used to sense the pressure signal and convert the pressure signal into an electrical signal. In some embodiments, pressure sensor 180A may be disposed on display screen 194 . There are many types of pressure sensor 180A, for example, it may be a resistive pressure sensor, an inductive pressure sensor or a capacitive pressure sensor. The capacitive pressure sensor may include at least two parallel plates with conductive materials. When a force acts on the pressure sensor 180A, the capacitance between the electrodes changes, and the device 100 determines the strength of the pressure according to the change in capacitance. When a touch operation acts on the display screen 194, the device 100 detects the touch operation according to the pressure sensor 180A. The device 100 may also calculate the touched position according to the detection signal of the pressure sensor 180A. In some embodiments, touch operations acting on the same touch position but with different touch operation intensities may correspond to different operation instructions. For example: when the touch operation with the touch operation intensity less than the first pressure threshold acts on the short message application icon, execute the instruction of viewing the short message; when the touch operation with the intensity greater than or equal to the first pressure threshold acts on the short message application icon , to execute the instruction of creating a new short message.

The gyroscopic sensor 180B may be used to determine the motion pose of the device 100 . In some embodiments, the angular velocity of device 100 about three axes (ie, x-axis, y-axis, and z-axis) may be determined by gyroscopic sensor 180B. The gyro sensor 180B can be used for image stabilization. For example, when the shutter is pressed, the gyro sensor 180B detects the shake angle of the device 100, calculates the distance that the lens module needs to compensate according to the angle, and allows the lens to counteract the shake of the device 100 through reverse movement to achieve anti-shake. The gyro sensor 180B can also be used in scenarios such as navigation and somatosensory games.

The air pressure sensor 180C is used to measure air pressure. In some embodiments, the device 100 calculates the altitude through the air pressure value measured by the air pressure sensor 180C to assist positioning and navigation.

The magnetic sensor 180D includes a Hall sensor. Device 100 may utilize magnetic sensor 180D to detect opening and closing of the flip holster. In some embodiments, when the device 100 is a flip machine, the device 100 can detect the opening and closing of the flip according to the magnetic sensor 180D. The device 100 can set features such as automatic unlocking of the flip cover according to the detected opening and closing state of the leather case or the opening and closing state of the flip cover.

The acceleration sensor 180E can detect the acceleration of the device 100 in various directions (generally x-axis, y-axis and z-axis). The magnitude and direction of gravity can be detected when the device 100 is stationary. The acceleration sensor 180E can also be used to recognize the posture of the device 100 as an input parameter for application programs such as landscape and portrait screen switching and pedometer.

The distance sensor 180F is used to measure distance. The device 100 can measure the distance by infrared or laser. In some embodiments, for example, in a shooting scene, the device 100 may use the distance sensor 180F for distance measurement to achieve fast focusing.

The proximity light sensor 180G may include, for example, a light-emitting diode (LED) and a light detector, such as a photodiode. The LEDs may be infrared LEDs. The device 100 emits infrared light through the LED. Device 100 uses photodiodes to detect infrared reflected light from nearby objects. When the reflected light is detected, the device 100 may determine that there is an object nearby. When no reflected light is detected, the device 100 may determine that there is no object nearby. The device 100 can use the proximity light sensor 180G to detect whether the user is holding the device 100 close to the ear to make a call, so as to automatically turn off the screen to save power. The proximity light sensor 180G can also be used for automatic unlocking and automatic screen locking in leather case mode or pocket mode.

The ambient light sensor 180L is used for sensing ambient light brightness. The device 100 can adaptively adjust the brightness of the display screen 194 according to the perceived ambient light brightness. The ambient light sensor 180L can also be used to automatically adjust the white balance when taking pictures. The ambient light sensor 180L can also cooperate with the proximity light sensor 180G to detect whether the device 100 is in the pocket, so as to prevent accidental touch.

The fingerprint sensor 180H is used to collect fingerprints. The device 100 can use the characteristics of the collected fingerprints to implement functions such as unlocking, accessing application locks, taking pictures, and answering incoming calls.

The temperature sensor 180J is used to detect temperature. In some embodiments, the device 100 implements a temperature treatment strategy using the temperature detected by the temperature sensor 180J. For example, when the temperature reported by the temperature sensor 180J exceeds a threshold, the device 100 may reduce the performance of a processor located near the temperature sensor 180J, so as to reduce power consumption and implement thermal protection. In some other embodiments, when the temperature is lower than another threshold, the device 100 heats the battery 142 to avoid abnormal shutdown of the device 100 due to low temperature. In some other embodiments, when the temperature is lower than another threshold, the device 100 boosts the output voltage of the battery 142 to avoid abnormal shutdown caused by low temperature.

The touch sensor 180K is also referred to as a touch device. The touch sensor 180K may be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 form a touch screen, which is also called a touch screen. The touch sensor 180K is used to detect a touch operation on or near it. The touch sensor 180K may transmit the detected touch operation to the application processor to determine the touch event type. Visual output related to the touch operation can be provided through the display screen 194 . In some other embodiments, the touch sensor 180K may also be disposed on the surface of the device 100 and disposed at a different position from the display screen 194 .

The bone conduction sensor 180M can acquire vibration signals. In some embodiments, the bone conduction sensor 180M can acquire the vibration signal of the vibrating bone mass of the human voice. The bone conduction sensor 180M can also contact the human pulse and receive the blood pressure beating signal. In some embodiments, the bone conduction sensor 180M can also be disposed in the earphone, combined into a bone conduction earphone. The audio module 170 can analyze the voice signal based on the vibration signal of the vibrating bone mass of the vocal part acquired by the bone conduction sensor 180M, so as to realize the voice function. The application processor can analyze the heart rate information based on the blood pressure beating signal acquired by the bone conduction sensor 180M, so as to realize the heart rate detection function.

Keys 190 include a power key and a volume key. The key 190 can be a mechanical key or a touch key. The device 100 can receive key input signals and implement functions related to case input signals.

The motor 191 can generate vibrations. The motor 191 can be used for incoming call notification, and can also be used for touch feedback. The motor 191 can generate different vibration feedback effects for touch operations on different application programs. For touch operations acting on different areas of the display screen 194, the motor 191 can also generate different vibration feedback effects. Different application scenarios (for example, time reminder, receiving information, alarm clock and games) may correspond to different vibration feedback effects. The touch vibration feedback effect can also support customization.

The indicator 192 can be an indicator light, which can be used to indicate the charging status and the change of the battery capacity, and can also be used to indicate messages, missed calls and notifications.

The SIM card interface 195 is used for connecting a SIM card. The SIM card can be inserted into the SIM card interface 195 to realize contact with the device 100 , and can also be pulled out from the SIM card interface 195 to realize separation from the device 100 . The device 100 may support 1 or N SIM card interfaces, where N is a positive integer greater than 1. Multiple cards can be inserted into the same SIM card interface 195 at the same time, and the types of the multiple cards can be the same or different. The SIM card interface 195 is also compatible with external memory cards. The device 100 interacts with the network through the SIM card to implement functions such as calling and data communication. In some embodiments, the device 100 adopts an embedded-SIM (eSIM) card, and the eSIM card can be embedded in the device 100 and cannot be separated from the device 100 .

Fig. 2 is a scene diagram applicable to this application.

This scenario includes a mobile phone and a router, and the mobile phone and the router may have the architecture shown in Figure 1. Wherein, a mobile phone may be called a terminal device, and a router may be called a network device.

The attenuation of the 2.4G frequency band is better than that of the 5G frequency band. For example, under the same power, the signal strength of the 2.4G uplink signal is 6-7dB higher than that of the 5G uplink signal. Therefore, for a 2.4G/5G dual-band terminal device, when the terminal device is far away from the router, the 5G uplink signal first enters the restricted scene (for example, the signal strength does not meet the communication requirements), because data frames and control information are usually transmitted in the same frequency band At this time, the general practice is to switch both the uplink (uplink, UL) and downlink (downlink, DL) to the 2.4G frequency band. As shown in Figure 2 and Figure 3.

The transmit power and the number of antennas of the terminal device are smaller than that of the router. Therefore, the uplink capability of the terminal device is lower than the downlink capability. For example, the maximum strength of the uplink signal of the terminal device is usually 5dB lower than the maximum strength of the downlink signal of the receiving router. When the uplink signal of the terminal device does not meet the communication requirements, the downlink signal of the receiving router can still meet the communication requirements. Therefore, when the high-frequency uplink signal does not meet the communication requirements, the high-frequency downlink signal can be used for communication to increase the transmission rate.

According to the method provided in this application, when the terminal device is at the edge of the coverage of the router, it can still use the 5GHz downlink signal communication, as shown in FIG. 4 and FIG. 5 .

In order to facilitate the understanding of the technical solution of the present application, before introducing the communication method provided by the present application, several feedback mechanisms are introduced first.

ACK (acknowledgment) is a confirmation mechanism in the 802.11 protocol (Wi-Fi protocol). When the receiver receives a data frame, it needs to send an ACK/Block Ack (BA) frame to the sender, so that the sender can confirm whether the data frame is sent success.

There are three main ACK strategies in the Wi-Fi protocol:

No ACK: The receiver does not return an ACK, the sender does not retransmit, the link reliability becomes poor, and the channel usage efficiency is low.

Normal ACK: After receiving the data message, the receiver will reply an ACK frame to the receiver within SIFS (usually 16us), otherwise, the receiver will think that the transmission failed and retransmit.

Block Ack: The mechanism introduced in 802.11e, first establishes a data transmission session through ADD BA REQ/ADD BA RES (Add BA Request/Add BA Response), and the session establishment process agrees on the buffer window size and session identifier (identifier, ID) of both parties and other information, when the receiver receives the transmitted data frame indicating that the ACK strategy is BA, it does not reply ACK/BA immediately, but only records the receiving status (that is, the data frame is received successfully or failed), the sender sends BA REQ, and the receiver The party returns to BA in SIFS, completes a Block Data (data block) transmission, repeats the Block Data transmission process repeatedly, and finally deletes the data transmission session through DEL BA REQ.

The BA mode is shown in Figure 6.

S601. The transmitter (transmitter) sends ADD BA REQ to the receiver, and the message is used to instruct the receiver (receiver) to start the BA mode. Wherein, the transmitter refers to the sending end of the downlink data frame, and the receiver refers to the receiving end of the downlink data frame. The transmitter may be a communication module of a router, and the receiver may be a communication module of a mobile phone. The communication module may include an antenna, Transceiver circuits and other devices. Normally, 2.4G signals and 5G signals have independent antennas and transceiver circuits.

S602. The receiver sends an ACK to the transmitter, indicating that the receiver has received the ADD BA REQ.

S603. The receiver sends ADD BA RES to the transmitter, and the message is used to indicate whether the receiver has started the BA mode. Among them, ADD BA RES can carry the buffer window size, session ID and other information agreed by the transmitter and receiver.

S604. The transmitter sends ACK to the receiver, indicating that the transmitter has received ADD BA RES.

S605-S608, the transmitter sends data frames to the receiver multiple times.

S609, the transmitter sends a BA REQ (BA request) to the receiver, and the message instructs the receiver to send the reception status of the data frames in S605-S608.

S610, the receiver sends a BA to the transmitter, where the BA indicates the reception status of the data frames in S605-S608.

The receiver feeds back the reception of multiple data frames through a message (BA), and this ACK strategy is BA. If the BA indicates that some or all of the data frames fail to be received, the sender may retransmit the failed data frames.

If all the data frames in S605-S608 are successfully received, the transmitter may continue to execute S611-S614.

S611-S614, the transmitter sends data frames to the receiver multiple times.

S615. The transmitter sends BA REQ to the receiver, and the message indicates the receiving status of the data frames sent by the receiver in S611-S614.

S616, the receiver sends a BA to the transmitter, where the BA indicates the reception status of the data frames in S611-S614.

After the data frame transmission is complete, the transmitter and receiver can exit BA mode through the following steps.

S617, the transmitter sends a DEL BA REQ (delete BA request) to the receiver, and the message instructs the receiver to exit the BA mode.

S618, the receiver sends an ACK to the transmitter, and the message indicates that the receiver has exited the BA mode.

When the router is located at the coverage edge of the 5G uplink signal, the communication quality of the 5G uplink signal decreases. In order to meet the low-latency requirements of the uplink signaling (such as ACK), it is necessary to transfer the original uplink signaling transmission of the 5G channel to the 2.4G channel. For delay-sensitive signaling such as ACK/BLOCK ACK, do the following timing design:

1. All 5G downlink data is fed back in BA mode.

2. The BA information (such as ADD BA REQ, ADD BA RES, BA REQ, BA) of the 5G module is transmitted to the 2.4G module and transmitted through the 2.4G channel.

3. After the sending end sends BA REQ on the 2.4G channel, the receiving end needs to reply BA within SIFS.

The following uses 2.4G and 5G as examples to introduce the communication method provided by this application. As shown in Fig. 7, the method includes the following steps.

S701, the 5G transmitter sends ADD BA REQ to the 2.4G transmitter.

It should be noted that the transmitter in FIG. 7 refers to the sending end of the downlink data frame, and the receiver refers to the receiving end of the downlink data frame. The transmitter can be a communication module of a router, and the receiver can be a communication module of a mobile phone. , the communication module may include antennas, transceiver circuits and other components. Among them, 2.4G transmitter and 2.4G receiver communicate through 2.4G frequency band, 5G transmitter and 5G receiver communicate through 5G frequency band, 2.4G transmitter and 5G transmitter can communicate through internal circuit, 2.4G receiver and 5G receivers can communicate with each other through internal circuits.

S702, the 2.4G transmitter sends 5G ADD BA REQ to the 2.4G receiver, and the message instructs the mobile phone to start the BA mode, wherein 5G in the 5G ADD BA REQ indicates a message from the 5G transmitter. The meaning of 5G in S707, S716, S719, S726, S729 and S732 is the same as the meaning of 5G in S702.

S703, the 2.4G receiver sends an ACK to the 2.4G transmitter, which indicates that the 5G ADD BA REQ has been received.

S704, the 2.4G transmitter forwards the ACK to the 5G transmitter.

S705, the 2.4G receiver forwards the ADD BA REQ (that is, the 5G ADD BA REQ in S702) to the 5G receiver.

2. After receiving 5G ADD BA REQ, the 4G receiver can send ACK first and then forward 5G ADD BA REQ, or forward 5G ADD BA REQ first and then send ACK, and can also perform these two steps at the same time. Therefore, the relationship between S705 and S703 The timing between them is not limited. In addition, the 2.4G receiver forwarding ADD BA REQ and the 2.4G transmitter forwarding ACK are independent steps of two devices, so there is no limitation on the timing between S705 and S704.

S706, the 5G receiver sends ADD BA RES to the 2.4G receiver, and the message indicates whether the mobile phone has started the BA mode. Among them, ADD BA RES can carry the buffer window size, session ID and other information agreed by the transmitter and receiver.

S707, the 2.4G receiver sends 5G ADD BA RES to the 2.4G transmitter (that is, the ADD BA RES in S706).

S708, the 2.4G transmitter sends an ACK to the 2.4G receiver, which indicates that the router has received 5G ADD BA RES.

S709, the 2.4G transmitter sends ADD BA RES to the 5G transmitter (that is, the 5G ADD BA RES in S707).

2. After receiving 5G ADD BA RES, the 4G transmitter can reply ACK first and then forward 5G ADD BA RES, or forward 5G ADD BA RES first and then reply ACK, and can also perform these two steps at the same time. Therefore, the S708 and S709 Timing is not limited.

S710, the 2.4G receiver sends an ACK to the 5G receiver, which indicates that the router has received 5G ADD BA RES.

2.4G receiver forwarding ACK and 2.4G transmitter forwarding ADD BA RES are independent steps of two devices, therefore, there is no limitation on the timing between S710 and S709.

If 5G ADD BA RES indicates that the mobile phone has started the BA mode, the router can execute S711~S714 to send data frames to the 5G receiver of the mobile phone through the 5G transmitter. After sending a preset number of data frames, the router can perform the following steps.

S715, the 5G transmitter sends BA REQ to the 2.4G transmitter, and this message requests the mobile phone to send the reception status of the data frames in S711-S714.

S716, the 2.4G transmitter sends a 5G BA REQ (ie, the BA REQ in S715) to the 2.4G receiver.

S717, the 2.4G receiver sends a BA REQ to the 5G receiver (that is, the 5G BA REQ in S716).

S718, the 5G receiver sends a BA to the 2.4G receiver, and the BA indicates the reception status of the data frames in S711-S714.

S719, the 2.4G receiver sends the 5G BA (ie, the BA in S718) to the 2.4G transmitter.

S720, the 2.4G transmitter sends BA to the 5G transmitter (ie, 5G BA in S719).

If the BA indicates that the data frames in S711-S714 fail to be received, the router may retransmit the failed data frames. If the BA indicates that the data frames in S711-S714 are all received successfully, the router may continue to send new downlink data in the 5G frequency band, that is, execute S721-S724. Subsequently, the router can perform the following steps.

S725, the 5G transmitter sends BA REQ to the 2.4G transmitter, and the message requests the mobile phone to send the reception status of the data frames in S721-S724.

S726, the 2.4G transmitter sends 5G BA REQ (ie, BA REQ in S725) to the 2.4G receiver.

S727, the 2.4G receiver sends a BA REQ to the 5G receiver (that is, the 5G BA REQ in S726).

S728, the 5G receiver sends a BA to the 2.4G receiver, and the BA indicates the reception status of the data frames in S721-S724.

S729, the 2.4G receiver sends the 5G BA (ie, the BA in S728) to the 2.4G transmitter.

S730, 2.4G transmitter sends BA to 5G transmitter (ie, 5G BA in S729).

After the downlink data transmission is completed, the router can instruct the mobile phone to exit the BA mode through the following steps.

S731, the 5G transmitter sends DEL BA REQ to the 2.4G transmitter, and the message instructs the mobile phone to exit the BA mode.

S732, the 2.4G transmitter sends 5G DEL BA REQ to the 2.4G receiver (that is, the DEL BA REQ in S731).

S733, the 2.4G receiver sends an ACK to the 2.4G transmitter, which indicates that the mobile phone has received the 5G DEL BA REQ.

S734, the 2.4G receiver sends DEL BA REQ to the 5G receiver (that is, the 5G DEL BA REQ in S732).

2. After receiving 5G DEL BA REQ, the 4G receiver can reply ACK first and then forward 5G DEL BA REQ, or forward 5G DEL BA REQ first and then reply ACK, and can also perform these two steps at the same time. Therefore, the timing of S733 and S734 no limit.

It can be seen from Figure 7 that the router and the mobile phone use the large coverage of the 2.4G signal to ensure the normal communication of control information (such as 5G ADD BA REQ, 5G ADD BA RES, 5G BA REQ, 5G DEL BA REQ), and use the 5G signal High bandwidth ensures the transmission rate of data frames.

The method shown in Figure 7 uses the BA mode to feed back the reception of the downlink data frame. Using the BA mode can avoid the retransmission of the downlink data frame caused by the failure of the channel competition when sending the feedback information. The reasons are as follows:

In a Wi-Fi network, there is no fixed time slot division. When a terminal device needs to use time-frequency resources, it usually needs to obtain channel resources through random competition. However, in some special scenarios, terminal devices do not need to compete for time-frequency resources. For example, within SIFS after the router sends downlink information (such as downlink data frame, 5G BA REQ), the frequency band corresponding to the downlink information can be determined by the receiver The mobile phone usage of the downlink information.

Due to the large amount of data in the downlink data frame, the mobile phone needs a long time to process the downlink data frame. If the mobile phone performs feedback based on the Normal ACK mode, the interval between the sending time of the feedback information and the sending time of the downlink data frame will often exceed SIFS , causing the feedback message to fail to be sent.

If the mobile phone performs feedback based on the BA mode, the mobile phone usually has completed the reception and processing of the downlink data frame when receiving the 5G BA REQ, and can immediately send the feedback information (5G BA). The interval is usually within SIFS, and the mobile phone can use the channel resources of 5G BA REQ to send 5G BA without channel competition, thus avoiding the retransmission of downlink data frames caused by channel competition failure when sending feedback information.

The method shown in FIG. 7 obtains both coverage gain and bandwidth gain. Therefore, this transmission mode can be called an enhanced mode. The router and mobile phone can turn off the enhanced mode when the distance between the two is relatively close (the router is within the coverage of the 5G uplink signal of the mobile phone), or the router and the mobile phone can be far away (the mobile phone is not within the coverage of the 5G downlink signal of the router) ) to turn off enhanced mode.

As shown in FIG. 8 , when a terminal device moves in different coverage areas, the router judges the conditions that the current signal satisfies, and schedules the used uplink and downlink.

When the router is within the coverage of the 5G uplink signal of the terminal device, the mobile phone and the router can use 2.4G uplink and downlink and 5G uplink and downlink to communicate.

When the mobile phone is far away from the router, and when the 5G uplink signal meets condition 1, the router is outside the coverage of the 5G uplink signal, but the mobile phone is within the coverage of the 5G downlink signal, the router schedules the mobile phone to use 2.4G uplink and 5G downlink , for example, the router can schedule the link used by the mobile phone through the access and disconnection process of the channel.

When the mobile phone continues to be far from the router, and when the 5G uplink signal meets condition 2, the router is outside the coverage of the 5G uplink signal, and the mobile phone is outside the coverage of the 5G downlink signal, the router schedules the mobile phone to use 2.4G uplink and downlink.

When the terminal device is close to the router, and when the 5G uplink signal meets condition 2', the router is outside the coverage of the 5G uplink signal, but the mobile phone is within the coverage of the 5G downlink signal, the router schedules the mobile phone to use 2.4G uplink and downlink and 5G downlink.

When the terminal device continues to approach the router, and when the 5G uplink signal meets condition 1', the router is within the coverage of the 5G uplink signal, and the mobile phone is within the coverage of the 5G downlink signal, the router schedules the mobile phone to use 2.4G uplink and downlink and 5G uplink and downlink.

Notes on Condition 1, Condition 2, Condition 2', and Condition 1': The router can set Condition 1, Condition 1, and Condition 2, Condition 2' and Condition 1', Condition 1, Condition 2, Condition 2' and Condition 1' can also be set according to other parameters. Condition 1 and 1', condition 2 and condition 2' are designed with hysteresis threshold to prevent ping-pong switching.

Taking the measured values as an example, Condition 1, Condition 2, Condition 2’ and Condition 1’ are as follows:

Condition 1: RSSI<-68dBm; Condition 1’: RSSI>-65dBm;

Condition 2: RSSI<-78dBm; Condition 2': RSSI>-75dBm.

Fig. 9 is a schematic diagram of communication frequency bands corresponding to condition 1, condition 2, condition 2' and condition 1'.

A hysteresis threshold is formed between condition 1 (the first threshold) and condition 1' (the fourth threshold), so that the router and the mobile phone can switch the communication mode only when the distance between the router and the mobile phone is close enough or far enough, which avoids the high-frequency uplink signal of the router The ping-pong switching effect caused by the reciprocating movement of the mobile phone when covering the edge.

For example, when the router is at the coverage edge of the 5G uplink signal, if there is only a threshold of -68dBm, the RSSI of the 5G uplink signal will be greater than -68dBm if the mobile phone is closer to the router, and the RSSI of the 5G uplink signal will be greater than -68dBm if the mobile phone is farther away from the router. The RSSI is less than -68dBm, which will cause frequent switching of the communication mode between the router and the mobile phone (that is, cause a ping-pong switching effect), reducing communication efficiency.

A hysteresis threshold is also formed between condition 2 (the second threshold) and condition 2' (the third threshold), so that the router and the mobile phone can only switch the communication mode when the distance between the router and the mobile phone is close enough or far enough, which prevents the mobile phone from receiving high-frequency downlink signals. The ping-pong switching effect caused by the reciprocating movement of the coverage edge.

For example, when the mobile phone is at the coverage edge of the 5G downlink signal, if there is only a threshold of -78dBm, the RSSI of the 5G downlink signal will be greater than -78dBm if the mobile phone is closer to the router, and the RSSI of the 5G downlink signal will be greater than -78dBm if the mobile phone is farther away from the router. The RSSI is less than -78dBm, which will cause frequent switching of communication modes between the router and the mobile phone (that is, cause a ping-pong switching effect), reducing communication efficiency.

The present application also provides a computer program product, which implements the method described in any method embodiment in the present application when the computer program product is executed by a processor.

The computer program product can be stored in a memory, and finally converted into an executable object file that can be executed by a processor after preprocessing, compiling, assembling, linking and other processing processes.

The computer program product can also solidify the code in the chip. This application does not limit the specific form of the computer program product.

The present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a computer, the method described in any method embodiment in the present application is implemented. The computer program may be a high-level language program or an executable object program.

The computer readable storage medium may be a volatile memory or a nonvolatile memory, or may include both a volatile memory and a nonvolatile memory. Among them, the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM ) and direct memory bus random access memory (direct rambus RAM, DR RAM).

Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process and technical effects of the devices and equipment described above can refer to the corresponding processes and technical effects in the foregoing method embodiments, here No longer.

In several embodiments provided in this application, the disclosed systems, devices and methods may be implemented in other ways. For example, some features of the method embodiments described above may be omitted, or not implemented. The device embodiments described above are only illustrative, and the division of units is only a logical function division. In actual implementation, there may be other division methods, and multiple units or components may be combined or integrated into another system. In addition, the coupling between the various units or the coupling between the various components may be direct coupling or indirect coupling, and the above coupling includes electrical, mechanical or other forms of connection.

It should be understood that in various embodiments of the present application, the sequence numbers of the processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, rather than by the embodiments of the present application. The implementation process constitutes any limitation.

Additionally, the terms "system" and "network" are often used herein interchangeably. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and A and B exist alone. There are three cases of B. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

In a word, the above descriptions are only preferred embodiments of the technical solutions of the present application, and are not intended to limit the scope of protection of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

A communication method, applied to a network device, characterized in that the network device communicates with a terminal device through a high-frequency signal and a low-frequency signal, and the method includes:

When the received signal strength of the high-frequency uplink signal is less than the first threshold, the network device switches the data frame and control information transmitted by the high-frequency uplink signal to the low-frequency uplink signal for transmission; and transmits the control information transmitted by the high-frequency downlink signal Switching to low-frequency downlink signal transmission; keeping the data frame of the high-frequency downlink signal transmission in the high-frequency downlink signal transmission.
The method according to claim 1, wherein the control information of the high-frequency downlink signal transmission includes a feedback request, and the feedback request is used to request the terminal device to send the data frame of the high-frequency downlink signal transmission Feedback.
The method according to claim 2, wherein the feedback request is a block response request BA REQ, the feedback information is a block response information BA, and the control information of the high-frequency downlink signal transmission also includes adding a block response request ADD BA REQ, add block response response ADD BA RES and delete block response request DEL BA REQ.
The method according to any one of claims 1 to 3, wherein the method further comprises:

When the signal strength of the high-frequency uplink signal is less than the second threshold, the network device keeps the data frame and control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission; and controls the transmission of the low-frequency downlink signal The information is kept in the low-frequency downlink signal transmission; the data frame of the high-frequency downlink signal transmission is switched to the low-frequency downlink signal transmission, wherein the second threshold is smaller than the first threshold.
The method according to claim 4, characterized in that the method further comprises:

When the signal strength of the high-frequency uplink signal is greater than a third threshold, the network device keeps the data frame and control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission; transmits the low-frequency downlink signal The control information of the low-frequency downlink signal is kept in the transmission of the low-frequency downlink signal; the data frame of the low-frequency downlink signal is switched to the high-frequency downlink signal transmission, wherein the third threshold is greater than the second threshold and smaller than the first threshold a threshold.
A communication method, applied to terminal equipment, characterized in that the terminal equipment communicates with network equipment through high-frequency signals and low-frequency signals, and the method includes:

When the received signal strength of the high-frequency uplink signal is less than the first threshold, the terminal device switches the data frame and control information transmitted by the high-frequency uplink signal to the low-frequency uplink signal for transmission in response to the scheduling of the network device; Switching the control information of the high-frequency downlink signal transmission to the low-frequency downlink signal transmission; keeping the data frame of the high-frequency downlink signal transmission in the high-frequency downlink signal transmission.
The method according to claim 6, wherein the control information of the high-frequency downlink signal transmission includes a feedback request, and the feedback request is used to request the terminal device to send the data frame of the high-frequency downlink signal transmission Feedback.
The method according to claim 7, wherein the feedback request is a block response request BA REQ, the feedback information is a block response information BA, and the control information of the high-frequency downlink signal transmission also includes adding a block response request ADD BA REQ, add block response response ADD BA RES and delete block response request DEL BA REQ.
The method according to any one of claims 6 to 8, wherein the method further comprises:

When the signal strength of the high-frequency uplink signal is less than the second threshold, the terminal device keeps the data frame and control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission; and transmits the control information of the low-frequency downlink signal The information is kept in the low-frequency downlink signal transmission; the data frame of the high-frequency downlink signal transmission is switched to the low-frequency downlink signal transmission, wherein the second threshold is smaller than the first threshold.
The method according to claim 9, characterized in that the method further comprises:

When the signal strength of the high-frequency uplink signal is greater than the third threshold, the terminal device keeps the data frame and control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission; transmits the low-frequency downlink signal The control information of the low-frequency downlink signal is kept in the transmission of the low-frequency downlink signal; the data frame of the low-frequency downlink signal is switched to the high-frequency downlink signal transmission, wherein the third threshold is greater than the second threshold and smaller than the first threshold a threshold.
A communication device, characterized in that it includes a processor and a memory, the processor is coupled to the memory, the memory is used to store a computer program, when the computer program is executed by the processor, the The device performs the method of any one of claims 1 to 5.
A communication device, characterized in that it includes a processor and a memory, the processor is coupled to the memory, the memory is used to store a computer program, when the computer program is executed by the processor, the The device performs the method of any one of claims 6 to 10.
A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor performs any one of claims 1 to 5 The method described above, or causing the processor to perform the method described in any one of claims 6-10.