CN114710812B

CN114710812B - Communication method and communication device

Info

Publication number: CN114710812B
Application number: CN202210193767.5A
Authority: CN
Inventors: 赵辰; 李重锦
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2021-12-27
Filing date: 2022-02-28
Publication date: 2023-11-28
Anticipated expiration: 2042-02-28
Also published as: CN114710812A; WO2023124186A1

Abstract

The application relates to the field of communication, and provides a communication method and a communication device, wherein the method is applied to terminal equipment, and the terminal equipment communicates with network equipment through high-frequency signals and low-frequency signals, and the method comprises the following steps: when the received signal strength of the high-frequency uplink signal is smaller than a first threshold value, the terminal equipment responds to the scheduling of the network equipment to switch the data frame and the control information transmitted by the high-frequency uplink signal to the low-frequency uplink signal for transmission; switching control information of high-frequency downlink signal transmission to low-frequency downlink signal transmission; and maintaining the data frame of the high-frequency downlink signal transmission in the high-frequency downlink signal transmission. The communication method and the communication device can improve the transmission bandwidth when the terminal equipment is far away from the network equipment.

Description

Communication method and communication device

The present application claims priority from chinese patent filed at 2021, 12 and 27 to the national intellectual property agency, application number 202111609925.2, application name "method and apparatus for sending or receiving reply messages", the entire contents of which are incorporated herein by reference.

Technical Field

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

Background

The terminal devices and the network devices (such as routers) can communicate through wireless signals, and some terminal devices can communicate with the network devices through various frequency bands, for example, the terminal devices can communicate with the network devices through 5G signals and 2.4G signals.

Because of the high attenuation characteristics of high frequency electromagnetic waves, the coverage of high frequency (e.g., 5G) signals is smaller than the coverage of low frequency (e.g., 2.4G) signals, and thus, when a terminal device is far from a network device, communication with the network device is generally only possible through low frequency signals. However, how to increase the transmission bandwidth when the terminal device is far away from the network device is a problem that currently needs to be solved, where the bandwidth of the low frequency signal is smaller than the bandwidth of the high frequency signal.

Disclosure of Invention

Embodiments of the present application provide a communication method, a communication apparatus, 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, applied to a network device, where the network device communicates with a terminal device through a high frequency signal and a low frequency signal, the method including: when the received signal strength of the high-frequency uplink signal is smaller than a first threshold value, the network equipment switches the data frame and the control information transmitted by the high-frequency uplink signal to the low-frequency uplink signal for transmission; switching control information of high-frequency downlink signal transmission to low-frequency downlink signal transmission; and maintaining the data frame of the high-frequency downlink signal transmission in the high-frequency downlink signal transmission.

When the received signal strength of the high-frequency uplink signal is smaller than a first threshold value, the terminal equipment is far away from the network equipment, and the high-frequency downlink signal of the network equipment can cover the terminal equipment due to the fact that the transmitting power of the network equipment is large and the number of antennas is large, so that the network equipment can transmit data frames through the high-frequency downlink signal, and the transmission bandwidth is improved; at this time, the terminal device transmits the feedback information through the low-frequency uplink signal, so that the coverage area of the feedback information can be improved. Therefore, the embodiment of the application utilizes the characteristics of the network equipment and the terminal equipment, uses different frequency bands to transmit the uplink information and the downlink information, and can improve the downlink transmission bandwidth on the premise that the terminal equipment does not increase the power consumption and the number of antennas.

In an alternative embodiment, the control information of the high frequency downlink signal transmission includes a feedback request, where the feedback request is used to request the terminal device to send feedback information of the data frame of the high frequency downlink signal transmission.

In an alternative embodiment, the feedback request is a block acknowledgement BA REQ, the feedback information is a block acknowledgement (block acknowledgement, BA), and the control information of the high frequency downlink signal transmission further includes adding a block acknowledgement request ADD BA REQ, where ADD bar eq is used to instruct the terminal device to start the BA mode, and a sending time of the ADD bar eq is before the BA REQ.

In some networks (e.g., wi-Fi networks), there is no fixed time slot division, and when a terminal device needs to use time-frequency resources, it is often necessary to acquire channel resources by means of random contention. However, in some special scenarios, the terminal device does not need to contend for the time-frequency resource, for example, in a short inter-frame space (SIFS) after the router sends downlink information (e.g., a downlink data frame, a 5G BA request), and the frequency band corresponding to the downlink information may be used by the terminal device that receives the downlink information.

Because the data size of the downlink data frame is larger, the terminal device needs to process the downlink data frame for a longer time, if the mobile phone feeds back based on a Normal feedback (Normal ACK) mode, the interval between the sending time of the feedback information and the sending time of the downlink data frame often exceeds SIFS, which results in failure of sending the feedback information.

If the terminal device feeds back based on the BA mode, the terminal device receives the 5G BA request and normally completes the receiving process of the downlink data frame, and can immediately send feedback information (5G BA), the interval between the sending time of the 5G BA and the sending time of the 5G BA request is usually within SIFS, and the terminal device can send the 5G BA by using the channel resource requested by the 5G BA, without channel contention, thereby avoiding the retransmission of the downlink data frame caused by the channel contention failure when sending the feedback information.

In an alternative embodiment, the control information of the high frequency uplink signal transmission includes an ADD block acknowledgement response ADD bars, which contains the communication parameters of BA mode, and the transmission time of ADD bar RES is located before BA REQ and after ADD BA REQ.

In an alternative embodiment, the control information transmitted by the high frequency downlink signal further includes a delete block acknowledgement request DEL BA REQ for instructing the terminal device to shut down the BA mode, the DEL BA REQ being located after the BA.

In an alternative embodiment, the method further comprises: when the signal strength of the high-frequency uplink signal is smaller than a second threshold value, the network equipment keeps the data frame and the control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission; the control information of the low-frequency downlink signal transmission is kept in the low-frequency downlink signal transmission; and switching the data frame of the high-frequency downlink signal transmission to the low-frequency downlink signal transmission, wherein the second threshold value is smaller than the first threshold value.

When the signal strength of the high-frequency uplink signal is smaller than the second threshold value, the distance between the terminal equipment and the network equipment is increased, the terminal equipment is separated from the coverage area of the high-frequency downlink signal, and the normal communication of the data frame can be ensured by switching the data frame transmitted by the high-frequency downlink signal to the low-frequency downlink signal.

In an alternative embodiment, the method further comprises: when the signal strength of the high-frequency uplink signal is greater than a third threshold value, the network equipment keeps the data frame and the control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission; the control information of the low-frequency downlink signal transmission is kept in the low-frequency downlink signal transmission; and switching the data frame of the low-frequency downlink signal transmission to the high-frequency downlink signal transmission, wherein the third threshold value is larger than the second threshold value and smaller than the first threshold value.

The third threshold is larger than the second threshold, so that the network equipment and the terminal equipment can switch the communication mode when the network equipment and the terminal equipment are close enough, and the ping-pong switching effect caused when the terminal equipment reciprocates at the coverage edge of the high-frequency downlink signal is avoided.

In an alternative embodiment, the method further comprises: when the signal strength of the high-frequency uplink signal is greater than a fourth threshold value, the network equipment switches the data frame and the control information transmitted by the low-frequency uplink signal to the low-frequency uplink signal for transmission; switching control information of low-frequency downlink signal transmission to high-frequency downlink signal transmission; and maintaining the data frame of the low-frequency downlink signal transmission at the high-frequency downlink signal transmission, wherein the fourth threshold value is larger than the first threshold value.

The fourth threshold is larger than the first threshold, so that the network equipment and the terminal equipment can switch the communication mode when the network equipment and the terminal equipment are close enough, and the ping-pong switching effect caused when the terminal equipment reciprocates at the coverage edge of the high-frequency downlink signal is avoided.

In a second aspect, there is provided another communication method applied to a terminal device that communicates with a network device through a high frequency signal and a low frequency signal, the method comprising: when the received signal strength of the high-frequency uplink signal is smaller than a first threshold value, the terminal equipment responds to the scheduling of the network equipment to switch the data frame and the control information transmitted by the high-frequency uplink signal to the low-frequency uplink signal for transmission; switching control information of high-frequency downlink signal transmission to low-frequency downlink signal transmission; and maintaining the data frame of the high-frequency downlink signal transmission in the high-frequency downlink signal transmission.

When the signal strength of the high-frequency uplink signal is smaller than the first threshold value, the terminal equipment is far away from the network equipment, and the high-frequency downlink signal of the network equipment can cover the terminal equipment due to the fact that the transmitting power of the network equipment is large and the number of antennas is large, so that the network equipment can transmit data frames through the high-frequency downlink signal, and the transmission bandwidth is improved; at this time, the terminal device transmits the feedback information through the low-frequency uplink signal, so that the coverage area of the feedback information can be improved. Therefore, the embodiment of the application utilizes the characteristics of the network equipment and the terminal equipment, uses different frequency bands to transmit the uplink information and the downlink information, and can improve the downlink transmission bandwidth on the premise that the terminal equipment does not increase the power consumption and the number of antennas.

In an alternative embodiment, the feedback request is a block acknowledgement BA REQ, the feedback information is a block acknowledgement (block acknowledgement, BA), and the control information of the high frequency downlink signal transmission further includes an ADD block acknowledgement request ADD BA REQ, where the ADD BA REQ is used to instruct the terminal device to start the BA mode, and a sending time of the ADD BA REQ is before the BA REQ.

In an alternative embodiment, the control information of the high frequency uplink signal transmission includes an ADD block acknowledgement response ADD bar, the ADD BA RES including a communication parameter of the BA mode, the transmit time of the ADD BA RES being located before the BA REQ and after the ADD BA REQ.

In an alternative embodiment, the control information of the high frequency downlink signal transmission further comprises a delete block acknowledgement request DEL bar eq, DEL bar eq for instructing the terminal device to shut down said BA mode, DEL BA REQ being located after BA.

In an alternative embodiment, the method further comprises: when the signal strength of the high-frequency uplink signal is smaller than a second threshold value, the terminal equipment keeps the data frame and the control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission; the control information of the low-frequency downlink signal transmission is kept in the low-frequency downlink signal transmission; and switching the data frame of the high-frequency downlink signal transmission to the low-frequency downlink signal transmission, wherein the second threshold value is smaller than the first threshold value.

In an alternative embodiment, the method further comprises: when the signal strength of the high-frequency uplink signal is greater than a third threshold value, the terminal equipment keeps the data frame and the control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission; the control information of the low-frequency downlink signal transmission is kept in the low-frequency downlink signal transmission; and switching the data frame of the low-frequency downlink signal transmission to the high-frequency downlink signal transmission, wherein the third threshold value is larger than the second threshold value and smaller than the first threshold value.

In an alternative embodiment, the method further comprises: when the signal strength of the high-frequency uplink signal is greater than a fourth threshold value, the terminal equipment switches the data frame and the control information transmitted by the low-frequency uplink signal to the low-frequency uplink signal for transmission; switching control information of low-frequency downlink signal transmission to high-frequency downlink signal transmission; and maintaining the data frame of the low-frequency downlink signal transmission at the high-frequency downlink signal transmission, wherein the fourth threshold value is larger than the first threshold value.

In a third aspect, there is provided a communication device comprising means for performing any of the methods of 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 apparatus is a network device, the processing unit may be a processor and the communication unit may be a communication interface; the network device may further comprise a memory for storing computer program code which, when executed by the processor, causes the network device to perform any of the methods of the first aspect.

When the apparatus 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, a circuit, or the like; the chip may also include memory, which may be memory within the chip (e.g., registers, caches, etc.), or memory external to the chip (e.g., read-only memory, random access memory, etc.); the memory is for storing computer program code which, when executed by the processor, causes the chip to perform any of the methods of the first aspect.

In a fourth aspect, there is provided another communications apparatus comprising means for performing any of the methods of the second aspect. The device can be a terminal device or a chip in the terminal device. The apparatus may include a communication unit and a processing unit.

When the apparatus is a terminal device, the processing unit may be a processor, and the communication unit may be a communication interface; the terminal device may further comprise a memory for storing computer program code which, when executed by the processor, causes the terminal device to perform any of the methods of the second aspect.

When the device is a chip in the terminal equipment, the processing unit may be a logic processing unit inside the chip, and the communication unit may be an output interface, a pin, a circuit, or the like; the chip may also include memory, which may be memory within the chip (e.g., registers, caches, etc.), or memory external to the chip (e.g., read-only memory, random access memory, etc.); the memory is for storing computer program code which, when executed by the processor, causes the chip to perform any of the methods of the second aspect.

In a fifth aspect, there is provided a computer readable storage medium storing computer program code which, when executed by a communications apparatus, causes the apparatus to perform any one of the methods of the first aspect.

In a sixth aspect, there is provided a computer readable storage medium storing computer program code which, when executed by a communications apparatus, causes the apparatus to perform any one of the methods of the second aspect.

In a seventh aspect, there is provided a computer program product comprising: computer program code which, when run by a communications apparatus, causes the apparatus to perform any of the methods of the first aspect.

In an eighth aspect, there is provided a computer program product comprising: computer program code which, when run by a communications apparatus, causes the apparatus to perform any of the methods of the second aspect.

Drawings

FIG. 1 is a schematic diagram of a hardware system suitable for use in the apparatus of the present application;

FIG. 2 is an application scenario suitable for use with the present application;

FIG. 3 is a schematic diagram of a communication scheme provided by the present application;

FIG. 4 is a schematic diagram of a communication scenario provided by the present 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 pattern provided by the present application;

FIG. 7 is a schematic diagram of another BA pattern 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 Description

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 suitable for the device of the application.

The apparatus 100 may be a mobile phone, a smart screen, a tablet computer, a wearable electronic device, an in-vehicle electronic device, an augmented reality (augmented reality, AR) device, a Virtual Reality (VR) device, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (personal digital assistant, PDA), a projector, a router, etc., and the specific type of the apparatus 100 is not limited by the embodiments of the present application.

The apparatus 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, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, keys 190, a motor 191, an indicator 192, a camera 193, a display 194, and a subscriber identity module (subscriber identification module, SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyro sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

The configuration shown in fig. 1 does not constitute a specific limitation on the apparatus 100. In other embodiments of the application, the apparatus 100 may include more or fewer components than those shown in FIG. 1, or the apparatus 100 may include a combination of some of the components shown in FIG. 1, or the apparatus 100 may include sub-components of some of the components shown in FIG. 1. The components shown in fig. 1 may be implemented 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: application processors (application processor, AP), modem processors, graphics processors (graphics processing unit, GPU), image signal processors (image signal processor, ISP), controllers, video codecs, digital signal processors (digital signal processor, DSP), baseband processors, neural-Network Processors (NPU). The different processing units may be separate devices or integrated devices.

The controller can generate operation control signals according to the instruction operation codes and the time sequence signals to finish the control of instruction fetching and instruction execution.

A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in the 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 reuse the instruction or data, it can be called directly from the memory. Repeated accesses are avoided and the latency of the processor 110 is reduced, thereby improving the efficiency of the system.

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

The I2C interface is a bi-directional synchronous serial bus comprising a serial data line (SDA) and a serial clock line (derail clock line, SCL). In some embodiments, the processor 110 may contain multiple sets of I2C buses. The processor 110 may be coupled to the touch sensor 180K, charger, flash, camera 193, etc., respectively, through different I2C bus interfaces. For example: the processor 110 may couple the touch sensor 180K through an I2C interface, causing the processor 110 to communicate with the touch sensor 180K through an I2C bus interface, implementing the touch functionality of the device 100.

The I2S interface may be used for audio communication. In some embodiments, the processor 110 may contain multiple sets of I2S buses. The processor 110 may be coupled to the audio module 170 via an I2S bus to enable communication between the processor 110 and the audio module 170. In some embodiments, the audio module 170 may transmit an audio signal to the wireless communication module 160 through the I2S interface, to implement a function of answering a call through the bluetooth headset.

PCM interfaces may also be used for audio communication to sample, quantize and encode analog signals. 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 may also transmit audio signals to the wireless communication module 160 through the PCM interface to implement a function of answering a call through the bluetooth headset. Both the I2S interface and the PCM interface may be used for audio communication.

The UART interface is a universal serial data bus for asynchronous communications. The bus may be a bi-directional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, a UART interface is typically used to connect the processor 110 with the wireless communication module 160. For example: the processor 110 communicates with a bluetooth module in the wireless communication module 160 through a UART interface to implement a bluetooth function. In some embodiments, the audio module 170 may transmit an audio signal to the wireless communication module 160 through a UART interface, to implement a function of playing music through a bluetooth headset.

The MIPI interface may be used to connect the processor 110 with peripheral devices such as the display 194 and camera 193. The MIPI interfaces include camera serial interfaces (camera serial interface, CSI), display serial interfaces (display serial interface, DSI), and the like. In some embodiments, processor 110 and camera 193 communicate through a CSI interface to implement the photographing function of apparatus 100. Processor 110 and display 194 communicate via a DSI interface to implement the display functions of apparatus 100.

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

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

The connection relationships between the modules shown in fig. 1 are merely illustrative, and do not constitute a limitation on the connection relationships between the modules of the apparatus 100. Alternatively, the modules of the apparatus 100 may be combined by using a plurality of connection manners in the foregoing embodiments.

The charge management module 140 is used to receive power from a charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charge management module 140 may receive the current of the wired charger through the USB interface 130. In some wireless charging embodiments, the charge management module 140 may receive electromagnetic waves (current path shown in dashed lines) through the wireless charging coil of the device 100. The charging management module 140 may also provide power to the device 100 through the power management module 141 while charging the battery 142.

The power management module 141 is used for connecting the battery 142, and the charge management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charge management module 140 to power the processor 110, the internal memory 121, the display 194, the camera 193, the wireless communication module 160, and the like. The power management module 141 may also be used to monitor parameters such as battery capacity, battery cycle times, and battery state of health (e.g., leakage, impedance). Alternatively, the power management module 141 may be provided in the processor 110, or the power management module 141 and the charge management module 140 may be provided in the same device.

The wireless communication function of the apparatus 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the apparatus 100 may be used to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed into 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 solution for wireless communication applied on the device 100, such as at least one of the following: second generation (2) ^th generation, 2G) mobile communication solutions, third generation (3 ^th generation, 3G) mobile communication solution, fourth generation (4 ^th generation, 5G) mobile communication solution, fifth generation (5 ^th generation, 5G) mobile communication solution. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifierA amplifier (low noise amplifier, LNA), etc. The mobile communication module 150 may receive electromagnetic waves from the antenna 1, perform processes such as filtering and amplifying the received electromagnetic waves, and then transmit the electromagnetic waves to a modem processor for demodulation. The mobile communication module 150 may further amplify the signal modulated by the modem processor, and the amplified signal is converted into electromagnetic waves by the antenna 1 and radiated. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be provided in the same device as at least some of the modules of the processor 110.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating the low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low frequency baseband signal to the baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs sound signals through audio devices (e.g., speaker 170A, receiver 170B) or displays images or video through display screen 194. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be provided in the same device as the mobile communication module 150 or other functional module, independent of the processor 110.

Similar to the mobile communication module 150, the wireless communication module 160 may also provide wireless communication solutions applied on the device 100, such as at least one of the following: wireless local area networks (wireless local area networks, WLAN), bluetooth (BT), bluetooth low energy (bluetooth low energy, BLE), ultra Wide Band (UWB), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field communication (near field communication, NFC), infrared (IR) technologies. The wireless communication module 160 may be one or more devices that integrate 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 transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, frequency modulate and amplify it, and convert the signal into electromagnetic waves to radiate via the antenna 2.

In some embodiments, antenna 1 of apparatus 100 is coupled to mobile communication module 150 and antenna 2 of apparatus 100 is coupled to wireless communication module 160 such that electronic device 100 may communicate with networks and other electronic devices via wireless communication techniques. The wireless communication technology may include at least one of the following communication technologies: global system for mobile communications (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 (wideband code division multiple access, WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long term evolution (long term evolution, LTE), BT, GNSS, WLAN, NFC, FM, IR technologies. The GNSS may include at least one of the following positioning techniques: global satellite 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 (quasi-zenith satellite system, QZSS), satellite based augmentation system (satellite based augmentation systems, SBAS).

The device 100 may implement display functions through a GPU, a display screen 194, and an application processor. The GPU is a microprocessor for image processing, and is connected to the display 194 and the application processor. The GPU is 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.

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

The apparatus 100 may implement a photographing function through an ISP, a camera 193, a video codec, a GPU, a display screen 194, an application processor, and the like.

The ISP is used to process data fed back by the camera 193. For example, when photographing, the shutter is opened, light is transmitted to the camera photosensitive element through the lens, the optical signal is converted into an electric signal, and the camera photosensitive element transmits the electric signal to the ISP for processing and is converted into an image visible to naked eyes. The ISP can carry out algorithm optimization on noise, brightness and color of the image, and can optimize parameters such as exposure, color temperature and the like of a shooting scene. In some embodiments, the ISP may be provided in the camera 193.

The camera 193 is used to capture still images or video. The object generates an optical image through the lens and projects the optical image onto the photosensitive element. The photosensitive element may be a charge coupled device (charge coupled device, CCD) or a Complementary Metal Oxide Semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, which is then transferred to the ISP to be converted into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into a standard Red Green Blue (RGB), YUV, etc. format image signal. In some embodiments, the apparatus 100 may include 1 or N cameras 193, N being a positive integer greater than 1.

The digital signal processor is used for processing digital signals, and can process other digital signals besides digital image signals. For example, when the apparatus 100 selects a frequency bin, a digital signal processor is used to fourier transform the frequency bin energy, or the like.

Video codecs are used to compress or decompress digital video. The apparatus 100 may support one or more video codecs. In this way, the apparatus 100 may play or record video in a variety of encoding formats, such as: dynamic picture experts group (moving picture experts group, MPEG) 1, MPEG2, MPEG3, and MPEG4.

The NPU is a processor which refers to the biological neural network structure, for example, refers to the transmission mode among human brain neurons to rapidly process input information, and can also be continuously self-learned. Intelligent awareness and other functions of the device 100 may be implemented by the NPU, for example: image recognition, face recognition, speech recognition, and text understanding.

The external memory interface 120 may be used to connect an external memory card, such as a Secure Digital (SD) card, to implement the memory capability of the expansion device 100. The external memory card communicates with the processor 110 through an external memory interface 120 to implement data storage functions. For example, files such as music, video, etc. are stored in an external memory card.

The internal memory 121 may be used to store computer executable program code including instructions. The internal memory 121 may include a storage program area and a storage data area. Wherein the storage program area may store application programs required for at least one function (e.g., a sound playing function and an image playing function) of the operating system. The storage data area may store data (e.g., audio data and phonebooks) created during use of the device 100. Further, the internal memory 121 may include a high-speed random access memory, and may also include a nonvolatile memory such as: at least one disk storage device, a flash memory device, and a universal flash memory (universal flash storage, UFS), etc. The processor 110 performs various processing methods of the apparatus 100 by executing instructions stored in the internal memory 121 and/or instructions stored in a memory provided in the processor.

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

The audio module 170 is used to convert digital audio information into an analog audio signal output, and may also be used to convert an analog audio input into a 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 a portion of the functional modules of the audio module 170 may be disposed in the processor 110.

The speaker 170A, also referred to as a horn, is used to convert audio electrical signals into sound signals. The device 100 may listen to music or hands-free conversation through the speaker 170A.

A receiver 170B, also referred to as an earpiece, converts the audio electrical signal into a sound signal. When a user uses the device 100 to answer a call or voice message, the user can answer the voice by placing the receiver 170B close to the ear.

Microphone 170C, also known as a microphone or microphone, is used to convert sound signals into electrical signals. When a user makes a call or transmits voice information, a sound signal may be input to the microphone 170C by sounding near the microphone 170C. The apparatus 100 may be provided with at least one microphone 170C. In other embodiments, the apparatus 100 may be provided with two microphones 170C to achieve a noise reduction function. In other embodiments, the device 100 may also be provided with three, four or more microphones 170C to perform the functions of identifying the source of sound and directing the recording. The processor 110 may process the electrical signal output by the microphone 170C, for example, the audio module 170 and the wireless communication module 160 may be coupled through a PCM interface, and after the microphone 170C converts the environmental sound into an electrical signal (such as a PCM signal), the electrical signal is transmitted to the processor 110 through the PCM interface; the electrical signal is subjected to volume analysis and frequency analysis from the processor 110 to determine the volume and frequency of the ambient sound.

The earphone interface 170D is used to connect a wired earphone. The headset interface 170D may be a USB interface 130 or a 3.5mm open mobile device 100 platform (open mobile terminal platform, OMTP) standard interface, a american cellular telecommunications industry association (cellular telecommunications industry association of the USA, CTIA) standard interface.

The pressure sensor 180A is used to sense a pressure signal, and may convert the pressure signal into an electrical signal. In some embodiments, the pressure sensor 180A may be disposed on the display screen 194. The pressure sensor 180A may be of various types, such as a resistive pressure sensor, an inductive pressure sensor, or a capacitive pressure sensor. The capacitive pressure sensor may be a device comprising at least two parallel plates with conductive material, and when a force is applied to the pressure sensor 180A, the capacitance between the electrodes changes, and the device 100 determines the strength of the pressure based on the change in capacitance. When a touch operation acts on the display screen 194, the apparatus 100 detects the touch operation according to the pressure sensor 180A. The device 100 may also calculate the location of the touch based on the detection signal of the pressure sensor 180A. In some embodiments, touch operations that act on the same touch location, but at different touch operation strengths, may correspond to different operation instructions. For example: executing an instruction for checking the short message when the touch operation with the touch operation intensity smaller than the first pressure threshold acts on the short message application icon; and executing the instruction of newly creating the short message when the touch operation with the touch operation intensity being larger than or equal to the first pressure threshold acts on the short message application icon.

The gyro sensor 180B may be used to determine a motion gesture of the apparatus 100. In some embodiments, the angular velocity of device 100 about three axes (i.e., the x-axis, the y-axis, and the z-axis) may be determined by gyro sensor 180B. The gyro sensor 180B may be used for photographing anti-shake. For example, when the shutter is pressed, the gyro sensor 180B detects the angle of the shake of the apparatus 100, calculates the distance to be compensated for by the lens module according to the angle, and allows the lens to counteract the shake of the apparatus 100 by the reverse motion, thereby realizing anti-shake. The gyro sensor 180B can also be used for scenes such as navigation and motion sensing games.

The air pressure sensor 180C is used to measure air pressure. In some embodiments, the device 100 calculates altitude from barometric pressure values measured by the barometric pressure sensor 180C, aiding in positioning and navigation.

The magnetic sensor 180D includes a hall sensor. The device 100 may detect the opening and closing of the flip holster using the magnetic sensor 180D. In some embodiments, when the device 100 is a flip-top machine, the device 100 may detect the opening and closing of the flip-top according to the magnetic sensor 180D. The device 100 can set the characteristics of automatic unlocking of the flip cover according to the detected opening and closing state of the leather sheath or the detected opening and closing state of the flip cover.

The acceleration sensor 180E can detect the magnitude of acceleration of the device 100 in various directions (typically the 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 may also be used to recognize the gesture of the apparatus 100 as an input parameter for applications such as landscape switching and pedometer.

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

The proximity light sensor 180G may include, for example, a light-emitting diode (LED) and a light detector, for example, a photodiode. The LED may be an infrared LED. The device 100 emits infrared light outwards through the LED. The device 100 uses a photodiode to detect infrared reflected light from nearby objects. When reflected light is detected, the apparatus 100 may determine that an object is present nearby. When no reflected light is detected, the apparatus 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 for talking, so as to automatically extinguish the screen for power saving. The proximity light sensor 180G may also be used for automatic unlocking and automatic screen locking in holster mode or pocket mode.

The ambient light sensor 180L is used to sense ambient light level. The device 100 may adaptively adjust the brightness of the display 194 based on the perceived ambient light level. The ambient light sensor 180L may also be used to automatically adjust white balance when taking a photograph. Ambient light sensor 180L may also cooperate with proximity light sensor 180G to detect whether device 100 is in a pocket to prevent false touches.

The fingerprint sensor 180H is used to collect a fingerprint. The device 100 can utilize the collected fingerprint characteristics to realize the functions of unlocking, accessing an application lock, photographing, answering an incoming call and the like.

The temperature sensor 180J is for detecting temperature. In some embodiments, the apparatus 100 performs a temperature processing strategy using the temperature detected by the temperature sensor 180J. For example, when the temperature reported by temperature sensor 180J exceeds a threshold, apparatus 100 performs a reduction in performance of a processor located in the vicinity of temperature sensor 180J in order to reduce power consumption to implement thermal protection. In other embodiments, when the temperature is below another threshold, the device 100 heats the battery 142 to avoid low temperatures causing the device 100 to shut down abnormally. In other embodiments, when the temperature is below a further threshold, the device 100 performs boosting of the output voltage of the battery 142 to avoid abnormal shutdown caused by low temperatures.

The touch sensor 180K, 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 for detecting a touch operation acting thereon or thereabout. The touch sensor 180K may communicate the detected touch operation to the application processor to determine the touch event type. Visual output related to touch operations may be provided through the display 194. In other embodiments, the touch sensor 180K may also be disposed on the surface of the device 100 and at a different location than the display 194.

The bone conduction sensor 180M may acquire a vibration signal. In some embodiments, bone conduction sensor 180M may acquire a vibration signal of a human vocal tract vibrating bone pieces. The bone conduction sensor 180M may also contact the pulse of the human body to receive the blood pressure pulsation signal. In some embodiments, bone conduction sensor 180M may also be provided in a headset, in combination with an osteoinductive headset. The audio module 170 may analyze the voice signal based on the vibration signal of the sound portion vibration bone block obtained by the bone conduction sensor 180M, so as to implement a voice function. The application processor may analyze the heart rate information based on the blood pressure beat signal acquired by the bone conduction sensor 180M, so as to implement a heart rate detection function.

The keys 190 include a power-on key and an volume key. The keys 190 may be mechanical keys or touch keys. The device 100 may receive a key input signal and implement a function associated with the case input signal.

The motor 191 may generate vibration. The motor 191 may be used for incoming call alerting as well as for touch feedback. The motor 191 may generate different vibration feedback effects for touch operations acting on different applications. The motor 191 may also produce different vibration feedback effects for touch operations acting on different areas of the display screen 194. Different application scenarios (e.g., time alert, receipt message, alarm clock, and game) may correspond to different vibration feedback effects. The touch vibration feedback effect may also support customization.

The indicator 192 may be an indicator light, which may be used to indicate a change in state of charge and charge, or may be used to indicate a message, missed call, and notification.

The SIM card interface 195 is used to connect a SIM card. The SIM card may be inserted into the SIM card interface 195 to make contact with the apparatus 100, or may be removed from the SIM card interface 195 to make separation from the apparatus 100. The device 100 may support 1 or N SIM card interfaces, N being a positive integer greater than 1. The same SIM card interface 195 may simultaneously insert multiple cards, which may be of the same type or of different types. The SIM card interface 195 may also be compatible with external memory cards. The device 100 interacts with the network through the SIM card to perform functions such as talking and data communication. In some embodiments, the device 100 employs an embedded SIM (eSIM) card, which may be embedded in the device 100 and not separable from the device 100.

Fig. 2 is a scene graph suitable for use with the present application.

The scenario includes a handset and a router, which may have the architecture shown in fig. 1. The mobile phone may be referred to as a terminal device, and the router may be referred to as a network device.

The attenuation condition of the 2.4G frequency band is better than that of the 5G frequency band, for example, the signal strength of the 2.4G uplink signal is 6-7 dB higher than that of the 5G uplink signal under the same power. 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 a limited scenario (e.g., the signal strength does not meet the communication requirement), and since the data frame and the control information are generally transmitted in the same frequency band, it is common practice to switch both Uplink (UL) and Downlink (DL) to 2.4G frequency band operation. As shown in fig. 2 and 3.

The transmit power and the number of antennas of the terminal device are smaller than those of the router, so that the upstream capability of the terminal device is lower than the downstream capability, e.g. the maximum strength of the upstream signal of the terminal device is typically 5dB lower than the maximum strength of the downstream signal of the receiving router. When the uplink signal of the terminal equipment does not meet the communication requirement, the downlink signal of the receiving router can still meet the communication requirement. Therefore, when the high-frequency uplink signal does not meet the communication requirement, the high-frequency downlink signal can be used for communication to improve the transmission rate.

According to the method provided by the application, when the terminal equipment is at the router coverage edge, the 5GHz downlink signal communication can still be used, as shown in fig. 4 and 5.

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

ACK (acknowledgment) is an acknowledgement mechanism in the 802.11 protocol (Wi-Fi protocol), and when a receiving party receives a data frame, it is required to send an ACK/Block ACK (BA) frame to a transmitting party, so that the transmitting party confirms whether the data frame is successfully transmitted.

There are three main ACK policies in Wi-Fi protocol:

no ACK: the receiving side does not return ACK, the transmitting side does not retransmit, the link reliability is poor, and the channel use efficiency is low.

Normal ACK: after receiving the data message, the receiver replies an ACK frame to the receiver within SIFS (typically 16 us), otherwise, the receiver considers that the transmission fails and retransmits the data message.

Block Ack: the mechanism introduced in 802.11e establishes a Data transmission session through an ADD bar eq/ADD bar (adding BA request/adding BA response), the session establishment process agrees with information such as buffer window size, session Identifier (ID) of both sides, when the receiving party receives the information indicating that the ACK policy is BA in the transmitted Data frame, the receiving party does not reply to the ACK/BA immediately, only records the receiving state (i.e. whether the Data frame is successfully received or not), the transmitting party sends BA REQ, the receiving party returns BA in SIFS, completes one Block Data (Data Block) transmission, repeatedly repeats the Block Data transmission process, and finally deletes the Data transmission session through the DEL bar eq.

The BA pattern is shown in FIG. 6.

S601, the transmitter (transmitter) transmits an ADD BA REQ to the receiver, which message instructs the receiver (receiver) to initiate the BA mode. The transmitter refers to a transmitting end of a downlink data frame, the receiver refers to a receiving end of the downlink data frame, the transmitter can be a communication module of a router, the receiver can be a communication module of a mobile phone, and the communication module can comprise an antenna, a receiving-transmitting circuit and other devices. Typically, the 2.4G signal and the 5G signal have separate antennas and transceiving circuitry.

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

S603, the receiver sends an ADD BA RES to the transmitter, which message indicates whether the receiver has initiated the BA mode. The ADD BA RES may carry information about a buffer window size, a session ID, and the like agreed by the transmitter and the receiver.

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

S605 to S608, the transmitter transmits the data frame to the receiver a plurality of times.

S609, the transmitter transmits a BA REQ (BA request) to the receiver, which instructs the receiver to transmit the reception situation of the data frame in S605 to S608.

S610, the receiver transmits a BA indicating the reception of the data frame in S605 to S608 to the transmitter.

The receiver feeds back the reception of a plurality of data frames through a message (BA), which is the BA. If the BA indicates that some or all of the data frames failed to be received, the transmitter may retransmit the data frames that failed to be received.

If all the reception of the data frames in S605 to S608 is successful, the transmitter may continue to perform S611 to S614.

S611 to S614, the transmitter transmits the data frame to the receiver a plurality of times.

S615, the transmitter transmits a BA REQ to the receiver, which indicates the reception situation in which the receiver transmits the data frames in S611 to S614.

S616, the receiver transmits a BA indicating the reception of the data frame in S611 to S614 to the transmitter.

After the data frame is transmitted, the transmitter and receiver may exit the BA mode by the following steps.

S617, the transmitter sends a DEL bar request to the receiver, which instructs the receiver to exit the BA mode.

S618, the receiver sends an ACK to the transmitter, the message indicating 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 is degraded, and in order to meet the low latency requirement of the uplink signaling (such as ACK), the original uplink signaling transmission of the 5G channel needs to be transferred to the 2.4G channel. For time-sensitive signaling such as ACK/BLOCK ACK, the following time sequence design is made:

1. And feeding back all 5G downlink data in a BA mode.

2. BA information (e.g., ADD BA REQ, ADD BA RES, bar eq, BA) for the 5G module is passed to the 2.4G module for transmission over the 2.4G channel.

3. After the transmitting end transmits the BA REQ in the 2.4G channel, the receiving end needs to reply the BA in the SIFS.

The communication method provided by the application is described below by taking 2.4G and 5G as examples. As shown in fig. 7, the method includes the following steps.

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

It should be noted that, in fig. 7, the transmitter refers to a transmitting end of a downlink data frame, the receiver refers to a receiving end of the downlink data frame, the transmitter may be a communication module of a router, the receiver may be a communication module of a mobile phone, and the communication module may include an antenna, a transceiver circuit, and other devices. Wherein, 2.4G transmitter and 2.4G receiver pass through 2.4G frequency channel communication, and 5G transmitter and 5G receiver pass through 5G frequency channel communication, can pass through the internal circuit communication between 2.4G transmitter and the 5G transmitter, can pass through the internal circuit communication between 2.4G receiver and the 5G receiver.

S702, the 2.4G transmitter sends a 5G ADD bar eq to the 2.4G receiver, the message indicating that the handset initiates the BA mode, wherein 5G in the 5G ADD BA REQ represents the message from the 5G transmitter. The meaning of 5G in S707, S716, S719, S726, S729, and S732 is the same as that of 5G in S702.

S703, the 2.4G receiver sends an ACK to the 2.4G transmitter, the message indicating that the 5G ADD bar eq 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 (i.e., the 5G ADD bar in S702) to the 5G receiver.

The 2.4G receiver may send ACK first and then forward the 5G ADD BA REQ after receiving the 5G ADD BA REQ, may forward the 5G ADD bar eq first and then send ACK, and may perform both steps simultaneously, so the timing between S705 and S703 is not limited. In addition, the 2.4G receiver forwarding ADD BA REQ and the 2.4G transmitter forwarding ACK are separate steps of the two devices, and thus the timing between S705 and S704 is not limited either.

S706, the 5G receiver sends an ADD BA RES to the 2.4G receiver, which indicates whether the handset has initiated BA mode. The ADD bar may carry information such as a buffer window size, a session ID, etc. agreed by the transmitter and the receiver.

The 2.4G receiver sends a 5G ADD BA RES (i.e., ADD BA RES in S706) to the 2.4G transmitter.

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

The 2.4G transmitter sends an ADD BA RES to the 5G transmitter (i.e., the 5G ADD BA RES in S707).

After receiving the 5G ADD bar, the 2.4G transmitter may reply with an ACK before forwarding the 5G ADD bar, may forward the 5G ADD BA RES before replying with an ACK, or may perform both steps at the same time, so the timing of S708 and S709 is not limited.

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

The 2.4G receiver forwarding ACK and the 2.4G transmitter forwarding ADD bars are separate steps for both devices, so the timing between S710 and S709 is not limited.

If the 5G ADD BA RES indicates that the handset has initiated the BA mode, the router may perform S711-S714, sending a data frame to the 5G receiver of the handset via the 5G transmitter. After the transmitted data frames reach the preset number, the router may perform the following steps.

S715, the 5G transmitter transmits a BA REQ to the 2.4G transmitter, which requests the handset to transmit the reception of the data frame in S711 to S714.

S716, the 2.4G transmitter transmits a 5G BA REQ (i.e., BA REQ in S715) to the 2.4G receiver.

S717, the 2.4G receiver transmits a BA REQ (i.e., 5G BA REQ in S716) to the 5G receiver.

S718, the 5G receiver transmits a BA indicating the reception of the data frame in S711 to S714 to the 2.4G receiver.

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

S720, the 2.4G transmitter transmits a BA (i.e., the 5G BA in S719) to the 5G transmitter.

If the BA indicates that the data frame in S711 to S714 has a reception failure, the router may retransmit the data frame having the reception failure. If the BA indicates that the data frames in S711 to S714 are received successfully, the router may continue to transmit new downlink data in the 5G band, i.e., perform S721 to S724. Subsequently, the router may perform the following steps.

S725, the 5G transmitter transmits a BA REQ to the 2.4G transmitter, which requests the handset to transmit the reception of the data frame in S721-S724.

S726, the 2.4G transmitter transmits a 5G BA REQ (i.e., BA REQ in S725) to the 2.4G receiver.

S727, the 2.4G receiver transmits a BA REQ (i.e., 5G BA REQ in S726) to the 5G receiver.

S728, the 5G receiver transmits a BA indicating the reception situation of the data frame in S721 to S724 to the 2.4G receiver.

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

S730, the 2.4G transmitter transmits a BA (i.e., the 5G BA in S729) to the 5G transmitter.

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 transmits a DEL BA REQ to the 2.4G transmitter, which indicates that the handset exits the BA mode.

S732, the 2.4G transmitter transmits a 5G DEL BA REQ (i.e., DEL BA REQ in S731) to the 2.4G receiver.

The 2.4G receiver sends an ACK to the 2.4G transmitter, S733, indicating that the handset has received the 5G DEL BA REQ.

S734, the 2.4G receiver transmits a DEL BA REQ (i.e., the 5G DEL BA REQ in S732) to the 5G receiver.

After receiving the 5G DEL BA REQ, the 2.4G receiver may reply with an ACK before forwarding the 5G DEL BA REQ, may forward the 5G DEL BA REQ before replying with an ACK, or may perform both steps at the same time, so the timing of S733 and S734 is not limited.

As can be seen from fig. 7, the router and the mobile phone ensure normal communication of control information (e.g., 5G ADD BA REQ, 5G ADD BA RES, 5G BA REQ, 5G DEL BA REQ) using a large coverage of 2.4G signal, and ensure a transmission rate of data frames using a high bandwidth of 5G signal.

The method shown in fig. 7 adopts the BA mode to feed back the receiving situation of the downlink data frame, and adopts the BA mode to avoid the retransmission of the downlink data frame caused by the channel contention failure when the feedback information is sent, for the following reasons:

in Wi-Fi networks, there is no fixed time slot division, and when a terminal device needs to use time-frequency resources, it is generally necessary to acquire channel resources by means of random contention. However, in some special scenarios, the terminal device does not need to compete for time-frequency resources, for example, in SIFS after the router sends the downlink information (e.g., downlink data frame, 5G BA REQ), the frequency band corresponding to the downlink information may be used by the mobile phone that receives the downlink information.

Because the data size of the downlink data frame is large, the mobile phone needs to process the downlink data frame for a long time, if the mobile phone feeds back 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 often exceeds SIFS, which results in failure of sending the feedback information.

If the mobile phone feeds back based on the BA mode, the mobile phone receives the 5G BA REQ, and the mobile phone usually completes the receiving process of the downlink data frame, and can immediately send feedback information (5G BA), the interval between the sending time of the 5G BA and the sending time of the 5G BA REQ is usually within SIFS, and the mobile phone can send the 5G BA using the channel resource of the 5G BA REQ, without channel contention, so as to avoid retransmission of the downlink data frame caused by channel contention failure when sending the feedback information.

The method shown in fig. 7 achieves both coverage gain and bandwidth gain, and thus, this transmission mode may be referred to as enhancement mode. The router and handset may turn off the enhancement mode when they are closer together (the router is in the 5G upstream signal coverage of the handset), or the router and handset may turn off the enhancement mode when they are farther apart (the handset is not in the 5G downstream signal coverage of the router).

As shown in fig. 8, when the terminal device moves in different coverage areas, the router judges the condition satisfied by the current signal, and schedules the uplink and downlink used.

When the router is located in the coverage area of the 5G uplink signal of the terminal equipment, the mobile phone and the router can use 2.4G uplink and downlink and 5G uplink and downlink for communication.

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

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

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

When the terminal equipment continues to be close to the router, and when the 5G uplink signal meets the condition 1', the router is located in the coverage of the 5G uplink signal, and the mobile phone is located in the coverage of the 5G downlink signal, and the router schedules the mobile phone to use 2.4G uplink and downlink and 5G uplink and downlink.

Description of condition 1, condition 2', and condition 1': the router may set the condition 1, the condition 2 'and the condition 1' according to the signal characteristics (such as the received signal strength indication (received signal strength indication, RSSI) or the bit error rate) of the 5G uplink signal, and may set the condition 1, the condition 2 'and the condition 1' according to other parameters. The hysteresis threshold design for conditions 1 and 1', and conditions 2 and 2' prevents ping-pong handover.

Taking the measurement values as an example, the conditions 1, 2 'and 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 'and condition 1'.

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

For example, when the router is located at the coverage edge of the 5G uplink signal, if only a threshold of-68 dBm is used, the RSSI of the 5G uplink signal is greater than-68 dBm when the mobile phone approaches to the router, and when the mobile phone is far away from the router, the RSSI of the 5G uplink signal is less than-68 dBm, which can cause frequent switching of the communication modes between the router and the mobile phone (i.e., cause ping-pong switching effect), and reduce the communication efficiency.

A hysteresis threshold is formed between the condition 2 (the second threshold) and the condition 2' (the third threshold) as well, so that the router and the mobile phone can switch communication modes when the router and the mobile phone are close enough or far enough, and the ping-pong switching effect caused when the mobile phone reciprocates at the coverage edge of the high-frequency downlink signal is avoided.

For example, when the mobile phone is located at the coverage edge of the 5G downlink signal, if only a threshold of-78 dBm is used, the RSSI of the 5G downlink signal is greater than-78 dBm when the mobile phone is close to a point towards the router, and the RSSI of the 5G downlink signal is less than-78 dBm when the mobile phone is far away from the router, which can cause frequent switching of the communication mode between the router and the mobile phone (i.e. cause ping-pong switching effect), and reduce the communication efficiency.

The application also provides a computer program product which, when executed by a processor, implements the method of any of the method embodiments of the application.

The computer program product may be stored in a memory and eventually converted to an executable object file that can be executed by a processor through preprocessing, compiling, assembling, and linking.

The computer program product may also cure code in the chip. The application is not limited to the specific form of computer program product.

The application also provides a computer readable storage medium having stored thereon a computer program which when executed by a computer implements the method according to any of the method embodiments of the application. The computer program may be a high-level language program or an executable object program.

The computer readable storage medium may be volatile memory or nonvolatile memory, or may include both volatile memory and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM).

It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working processes and technical effects of the apparatus and device described above may refer to corresponding processes and technical effects in the foregoing method embodiments, which are not described in detail herein.

In the several embodiments provided by the present application, the disclosed systems, devices, and methods may be implemented in other manners. For example, some features of the method embodiments described above may be omitted, or not performed. The above-described apparatus embodiments are merely illustrative, the division of units is merely a logical function division, and there may be additional divisions in actual implementation, and multiple units or components may be combined or integrated into another system. In addition, the coupling between the elements or the coupling between the elements may be direct or indirect, including electrical, mechanical, or other forms of connection.

It should be understood that, in various embodiments of the present application, the size of the sequence number of each process does not mean that the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In addition, the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely one association relationship describing the associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In summary, the foregoing description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A communication method applied to a network device, wherein the network device communicates with a terminal device through a high frequency signal and a low frequency signal, the method comprising:

when the received signal strength of the high-frequency uplink signal is smaller than a first threshold value, the network equipment switches the data frame and the control information transmitted by the high-frequency uplink signal to a low-frequency uplink signal for transmission; switching control information of high-frequency downlink signal transmission to low-frequency downlink signal transmission; maintaining the data frame of the high-frequency downlink signal transmission in the high-frequency downlink signal transmission;

The control information of the high-frequency downlink signal transmission comprises a feedback request, wherein the feedback request is used for requesting the terminal equipment to send feedback information of a data frame of the high-frequency downlink signal transmission, the feedback request is a block response request BA REQ, the feedback information is block response information BA, and the control information of the high-frequency downlink signal transmission also comprises an adding block response request ADD BAREQ, an adding block response ADD BARES and a deleting block response request DEL BA REQ.

2. The method according to claim 1, wherein the method further comprises:

when the signal strength of the high-frequency uplink signal is smaller than a second threshold value, the network equipment keeps the data frame and the control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission; maintaining control information of the low frequency downlink signal transmission in the low frequency downlink signal transmission; and switching the data frame of the high-frequency downlink signal transmission to the low-frequency downlink signal transmission, wherein the second threshold value is smaller than the first threshold value.

3. The method according to claim 2, wherein the method further comprises:

when the signal strength of the high-frequency uplink signal is greater than a third threshold value, the network equipment keeps the data frame and the control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission; maintaining control information of the low frequency downlink signal transmission in the low frequency downlink signal transmission; and switching the data frame of the low-frequency downlink signal transmission to the high-frequency downlink signal transmission, wherein the third threshold value is larger than the second threshold value and smaller than the first threshold value.

4. A communication method applied to a terminal device, wherein the terminal device communicates with a network device through a high frequency signal and a low frequency signal, the method comprising:

when the received signal strength of the high-frequency uplink signal is smaller than a first threshold value, the terminal equipment responds to the scheduling of the network equipment to switch the data frame and the control information transmitted by the high-frequency uplink signal to the low-frequency uplink signal for transmission; switching control information of high-frequency downlink signal transmission to low-frequency downlink signal transmission; maintaining the data frame of the high-frequency downlink signal transmission in the high-frequency downlink signal transmission;

5. The method according to claim 4, wherein the method further comprises:

When the signal strength of the high-frequency uplink signal is smaller than a second threshold value, the terminal equipment keeps the data frame and the control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission; maintaining control information of the low frequency downlink signal transmission in the low frequency downlink signal transmission; and switching the data frame of the high-frequency downlink signal transmission to the low-frequency downlink signal transmission, wherein the second threshold value is smaller than the first threshold value.

6. The method of claim 5, wherein the method further comprises:

when the signal strength of the high-frequency uplink signal is greater than a third threshold value, the terminal equipment keeps the data frame and the control information transmitted by the low-frequency uplink signal in the low-frequency uplink signal for transmission; maintaining control information of the low frequency downlink signal transmission in the low frequency downlink signal transmission; and switching the data frame of the low-frequency downlink signal transmission to the high-frequency downlink signal transmission, wherein the third threshold value is larger than the second threshold value and smaller than the first threshold value.

7. A communication device comprising a processor and a memory, the processor and the memory being coupled, the memory being for storing a computer program which, when executed by the processor, causes the device to perform the method of any one of claims 1 to 3.

8. A communication device comprising a processor and a memory, the processor and the memory being coupled, the memory being for storing a computer program which, when executed by the processor, causes the device to perform the method of any of claims 4 to 6.

9. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program, which when executed by a processor causes the processor to perform the method of any one of claims 1 to 3 or causes the processor to perform the method of any one of claims 4 to 6.