CN111465090B - Wireless data transmission method and device, storage medium and terminal - Google Patents

Wireless data transmission method and device, storage medium and terminal Download PDF

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Publication number
CN111465090B
CN111465090B CN202010123242.5A CN202010123242A CN111465090B CN 111465090 B CN111465090 B CN 111465090B CN 202010123242 A CN202010123242 A CN 202010123242A CN 111465090 B CN111465090 B CN 111465090B
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signal strength
receiving
sensitivity
wireless data
receiving end
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CN111465090A (en
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李�浩
余庆华
王泷
郝速志
赵育仁
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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Priority to PCT/CN2021/077812 priority patent/WO2021170023A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/245—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account received signal strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A wireless data transmission method and device, a storage medium and a terminal are provided, the method comprises the following steps: determining a sending rate; determining the receiving sensitivity of a receiving end according to the sending rate, wherein the receiving sensitivity is used for representing the lowest signal strength of the wireless data which can be received by the receiving end; determining a path loss, wherein the path loss is used for representing the signal strength of the loss on a path of the wireless data transmitted to the receiving end; determining transmission power at least according to the receiving sensitivity of the receiving end and the sum of the signal intensity of the path loss; and transmitting the wireless data by adopting the transmission power. The invention can obviously reduce the sending power, thereby reducing the dynamic power consumption and simultaneously reducing the wireless interference to the surrounding environment.

Description

Wireless data transmission method and device, storage medium and terminal
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a wireless data transmission method and apparatus, a storage medium, and a terminal.
Background
At present, most terminals support a Wireless local area network (WiFi) technology, and a WiFi module can enable the terminals to connect to a network through radio waves in an effective range without wiring or limited by wiring conditions, so that the WiFi internet access mode is favored by more and more users. However, the power consumption of the WiFi module is large, and if the WiFi module is used frequently, the battery power consumption is accelerated.
By default, the WiFi transmitter always uses its own maximum transmit power to transmit. Specifically, the coverage of WiFi devices can reach 100 meters or more, and the maximum transmit power (TX power) can reach 21db. TX power always assumes the maximum value by default because the distance between the transmitting and receiving ends is not determined.
However, in a scenario where the two communication parties are close to each other, such as when a wireless headset and a smart phone are respectively used as a transmitting end and a receiving end, a large transmitting power is used, dynamic power consumption is increased, and meanwhile, a large wireless interference is brought to the environment.
There is a need for a wireless data transmission method that reduces dynamic power consumption and, at the same time, reduces radio interference to the surrounding environment.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a wireless data transmission method and device, a storage medium and a terminal, which can obviously reduce transmission power, thereby reducing dynamic power consumption and simultaneously reducing wireless interference to the surrounding environment.
In order to solve the above technical problem, an embodiment of the present invention provides a wireless data transmission method, including the following steps: determining a sending rate; determining the receiving sensitivity of a receiving end according to the sending rate, wherein the receiving sensitivity is used for representing the lowest signal strength of the wireless data which can be received by the receiving end; determining a path loss, wherein the path loss is used for representing the signal strength of the loss on a path of the wireless data transmitted to the receiving terminal; determining transmission power at least according to the receiving sensitivity of the receiving end and the sum of the signal intensity of the path loss; and transmitting the wireless data by adopting the transmission power.
Optionally, determining the path loss comprises: detecting the space distance between a sending end and a receiving end by adopting an RTT (round trip time) measuring technology; and determining the path loss according to the space distance.
Optionally, determining the transmission power according to at least the sum of the receiving sensitivity of the receiving end and the signal strength of the path loss includes:
Tx_power＝Rx_sensitivity+Path_loss；
wherein Tx _ power is used to represent the signal strength of the transmission power; rx _ sensitivity is used to represent the receiving sensitivity of the receiving end; path _ loss is used to represent the Path loss.
Optionally, before determining the transmission power according to at least the sum of the receiving sensitivity of the receiving end and the signal strength of the path loss, the method for transmitting wireless data further includes: determining a signal strength margin for transmitting the wireless data.
Optionally, a preset fixed value is used as the signal strength margin.
Optionally, the signal strength margin is determined according to the path loss of the wireless data sent for multiple times; the multi-time transmission wireless data is used for indicating multi-time transmission within a preset time length or multi-time transmission within preset transmission times.
Optionally, the signal strength margin is determined according to a difference between a maximum value and a minimum value of the path loss of the wireless data sent for multiple times; wherein the larger the difference, the larger the signal strength margin.
Optionally, the signal strength margin is determined according to the receiving sensitivity of the receiving end; wherein the smaller the receiving sensitivity is, the larger the signal strength margin is.
Optionally, the receiving sensitivities and the signal strength margins are in one-to-one correspondence, and the sum of each receiving sensitivity and the corresponding signal strength margin is within a preset signal strength range.
Optionally, determining the transmission power according to at least the sum of the receiving sensitivity of the receiving end and the signal strength of the path loss includes:
Tx_power＝Rx_sensitivity+Path_loss+Margin；
wherein Tx _ power is used to represent the signal strength of the transmission power; rx _ sensitivity is used to represent the reception sensitivity of the receiving end; path _ loss is used to represent the Path loss; margin is used to represent a signal strength Margin for transmitting the wireless data.
Optionally, the determining the sending rate includes: and determining the sending speed according to the historical sending success rate of sending the wireless data for multiple times within the preset time length or sending the wireless data for multiple times within the preset sending times.
Optionally, determining the receiving sensitivity of the receiving end according to the sending rate includes: searching a receiving sensitivity table of the receiving end according to the sending rate so as to determine the receiving sensitivity of the receiving end; wherein the reception sensitivity table is used to indicate a relationship between different transmission rates and reception sensitivities.
Optionally, the receiving sensitivity table is pre-received from the receiving end through a WiFi management frame or a WiFi data frame.
Optionally, one of the sending end and the receiving end includes a wireless headset, and the other end includes an intelligent terminal.
To solve the above technical problem, an embodiment of the present invention provides a wireless data transmitting apparatus, including: a rate determination module adapted to determine a sending rate; the sensitivity determining module is suitable for determining the receiving sensitivity of a receiving end according to the sending rate, wherein the receiving sensitivity is used for representing the lowest signal strength of the wireless data which can be received by the receiving end; a path loss determining module, adapted to determine a path loss, where the path loss is used to indicate a signal strength of a loss on a path through which the wireless data is transmitted to the receiving end; a power determining module adapted to determine a transmission power according to at least a sum of a reception sensitivity of the receiving end and a signal strength of the path loss; and the sending module is suitable for sending the wireless data by adopting the sending power.
To solve the above technical problem, an embodiment of the present invention provides a storage medium having stored thereon computer instructions, which when executed, perform the steps of the above wireless data transmission method.
In order to solve the above technical problem, an embodiment of the present invention provides a terminal, which includes a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the above wireless data transmission method when executing the computer instructions.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, the receiving sensitivity of the receiving end and the path loss are determined, and the sending power is determined at least according to the sum of the receiving sensitivity of the receiving end and the signal strength of the path loss.
Furthermore, a signal strength margin for transmitting the wireless data may be determined to determine the transmission power by using the sum of the reception sensitivity of the receiving end, the signal strength of the path loss, and the signal strength margin, and the transmission power may be increased by setting the signal strength margin on the basis of the lowest signal strength at which the receiving end can receive the wireless data, and thus, it may be possible to avoid transmission failure due to a change in path loss or the like by using only the lowest signal strength, thereby improving the transmission quality.
Further, according to the fact that the larger the difference between the maximum value and the minimum value of the path loss of the wireless data transmitted for multiple times is, the larger the signal intensity margin is determined to be, when the path loss is unstable and the peak-to-valley value difference is large, the larger signal intensity margin is adopted, the transmission power can be increased to a greater extent, the probability of transmission failure is reduced, and the transmission quality is further improved.
Further, the smaller the reception sensitivity is, the larger the signal strength margin is, the larger the transmission power can be increased to a greater extent by adopting the larger signal strength margin in the case where the lowest signal strength at which the wireless data can be received is smaller, and by setting the sum of each reception sensitivity and the corresponding signal strength margin within the preset signal strength range, the excessively high set signal strength margin can be avoided, and the transmission power can be set more uniformly, thereby reducing the possibility of transmission failure, and further improving the transmission quality.
Drawings
Fig. 1 is a flow chart of a wireless data transmission method according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a relationship between parameters for determining a signal strength margin according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a wireless data transmitting apparatus according to an embodiment of the present invention.
Detailed Description
As mentioned above, in WiFi, the sender always uses its own maximum transmission power to transmit, and since the distance between the sender and the receiver is not determined, the TX power always takes the maximum value by default. However, in a scenario where the two communication parties are close to each other, for example, in a case where the wireless headset and the smart phone are respectively used as the transmitting end and the receiving end, a larger transmitting power is used, so that dynamic power consumption is increased, and meanwhile, a larger wireless interference is brought to the environment.
The inventor of the present invention has found through research that, in the prior art, a transmitting end cannot determine how much transmission power is used, so that a receiving end can receive wireless data, and therefore, the transmitting end always uses the maximum transmission power to transmit.
In the embodiment of the invention, the sending rate is determined; determining the receiving sensitivity of a receiving end according to the sending rate, wherein the receiving sensitivity is used for representing the lowest signal strength of the wireless data which can be received by the receiving end; determining a path loss, wherein the path loss is used for representing the signal strength of the loss on a path of the wireless data transmitted to the receiving end; determining transmission power at least according to the receiving sensitivity of the receiving end and the sum of the signal strength of the path loss; and transmitting the wireless data by adopting the transmission power. By adopting the scheme, the receiving sensitivity and the path loss of the receiving end are determined, and then the sending power is determined at least according to the sum of the receiving sensitivity of the receiving end and the signal strength of the path loss.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, fig. 1 is a flowchart of a method for transmitting wireless data according to an embodiment of the present invention. The wireless data transmission method includes steps S11 to S15:
step S11: determining a sending rate;
step S12: determining the receiving sensitivity of a receiving end according to the sending rate, wherein the receiving sensitivity is used for representing the lowest signal strength of the wireless data which can be received by the receiving end;
step S13: determining a path loss, wherein the path loss is used for representing the signal strength of the loss on a path of the wireless data transmitted to the receiving terminal;
step S14: determining transmission power at least according to the receiving sensitivity of the receiving end and the sum of the signal intensity of the path loss;
step S15: and transmitting the wireless data by adopting the transmission power.
In a specific implementation of step S11, the sending rate may be determined according to historical sending results.
Wherein, the sending rate can be expressed by a Modulation and Coding Scheme (MCS). Specifically, the configuration of the transmission rate is implemented by an MCS index value.
Further, the determining the transmission rate may include: and determining the sending rate according to the historical sending success rate of sending the wireless data for multiple times within the preset time length or sending the wireless data for multiple times within the preset sending times.
Specifically, a transmission rate at which wireless data is transmitted one or more times with a high transmission success rate may be adopted as the selected transmission rate.
It should be noted that, in the embodiment of the present invention, the sending rate may be determined by using other suitable methods, such as pre-selecting, receiving from a network side or a receiving side, and the like, which is not limited in this embodiment of the present invention.
In the embodiment of step S12, the receiving sensitivity of the receiving end can be determined by looking up the table.
Further, the step of determining the receiving sensitivity of the receiving end according to the sending rate may include: searching a receiving sensitivity table of the receiving end according to the sending rate so as to determine the receiving sensitivity of the receiving end; wherein the reception sensitivity table is used to indicate a relationship between different transmission rates and reception sensitivities.
In a specific implementation, the receiving sensitivity table may be provided by the manufacturer of the receiving end product when the receiving end product is finished being produced.
Table 1 shows a receiving sensitivity table according to an embodiment of the present invention.
Sending rate Reception sensitivity (db)
MCS0 -92.4
MCS1 -89.8
MCS2 -87.2
MCS3 -83.6
MCS4 -80.3
MCS5 -76.1
MCS6 -74.4
MCS7 -72.7
As shown in table 1, the configuration of the transmission rate is represented by MCS index values, MCS0 to MCS7, respectively, and the corresponding reception sensitivities are-92.4 db to-72.7 db, and increase in order. In a specific implementation, the larger the transmission rate, the higher the requirement on the receiving sensitivity of the receiving end, and the larger the value of the receiving sensitivity.
Further, the reception sensitivity table may be previously received from the receiving end through a WiFi management frame or a WiFi data frame.
Specifically, taking 802.11 as an example, it is a standard established by the international Institute of Electrical and Electronics Engineers (IEEE) for wireless local area networks. All 802.11 frames can be classified into three categories: management frames, control frames, and data frames.
In the embodiment of the invention, the receiving sensitivity table is set to be received from the receiving end in advance through the WiFi management frame or the WiFi data frame, so that the sending end can accurately determine the receiving sensitivity data, and the accuracy of the subsequent steps is ensured.
In a specific implementation of step S13, a path loss is determined, where the path loss is used to indicate a signal strength of a loss on a path where the wireless data is transmitted to the receiving end.
Further, the step of determining the path loss may comprise: detecting the space distance between a sending end and a receiving end by adopting an RTT (round trip time) measuring technology; and determining the path loss according to the space distance.
Specifically, the description will be given by taking the device a as the transmitting end and the device B as the receiving end, and the transmitted wireless data is a unicast packet. The Round-Trip Time (RTT) between devices a and B represents the total Time that elapses from the Time device a sends a unicast packet to device B to the Time device a receives an acknowledgement packet from device B. The Time at which device a transmits a unicast packet is referred to herein as the Time Of Departure (TOD), and the Time at which device a receives an acknowledgement packet from device B is referred to herein as the Time Of Arrival (TOA). For some of the example embodiments described herein, TOD may be a timestamp of when the unicast packet left device a, and TOA may be a timestamp of when the acknowledgement packet was received by device a. Thus, the difference between TOA and TOD may be used as an approximation of the RTT associated with the propagation of unicast and acknowledgement signals exchanged between device a and device B, where RTT ≈ TOA-TOD.
It should be noted that in a specific application, the time of signal processing and the time of processing delay are also required to be considered, so that the above formula can be modified according to specific situations.
As can be seen from the above, the farther the distance between the device a and the device B is, the larger the RTT is, and the distance between the device a and the device B can be determined according to the RTT.
In particular implementations, the path loss may be determined from the spatial distance using a suitable path loss model. For example, a propagation path loss model, a logarithmic distance path loss model, or the like may be employed. It should be noted that the embodiment of the present invention does not limit the selection of a specific path loss model.
In a specific implementation of step S14, the transmit power may be determined.
Further, the step of determining the transmission power according to at least the sum of the reception sensitivity of the receiving end and the signal strength of the path loss may include:
Tx_power＝Rx_sensitivity+Path_loss；
wherein Tx _ power is used to represent the signal strength of the transmission power; rx _ sensitivity is used to represent the receiving sensitivity of the receiving end; path _ loss is used to represent the Path loss.
It can be understood that, in the embodiment of the present invention, only the receiving sensitivity of the receiving end and the path loss are considered, and the signal strength of the obtained transmission power is certainly smaller than the maximum transmission power of the transmitting end itself.
In a specific implementation of step S15, the wireless data is transmitted using the transmission power.
In the embodiment of the invention, the receiving sensitivity and the path loss of the receiving end are determined, and then the sending power is determined at least according to the sum of the receiving sensitivity of the receiving end and the signal strength of the path loss.
In another specific implementation manner of the embodiment of the present invention, a signal strength margin for transmitting the wireless data may be further determined, so as to increase transmission power and improve transmission quality by setting the signal strength margin.
Specifically, before determining the transmission power according to at least the sum of the receiving sensitivity of the receiving end and the signal strength of the path loss in step S14 in fig. 1, the wireless data transmission method may further include: determining a signal strength margin for transmitting the wireless data.
The signal strength margin may also be referred to as a signal strength margin, and is used for increasing a certain signal strength and then transmitting the signal after determining the receiving sensitivity of the receiving end and the signal strength of the path loss.
Referring to fig. 2, fig. 2 is a schematic diagram of a relationship between parameters for determining a signal strength margin according to an embodiment of the present invention. The signal strength margin may be determined using a variety of parameters.
In the first specific implementation manner of the embodiment of the present invention, a preset fixed value may be adopted as the signal strength margin.
It should be noted that the preset fixed value should not be too large, otherwise the signal strength margin is set too large, which results in too high transmission power and reduces the inventive effect of the present invention; the preset fixed value should not be too small, otherwise, the set signal strength margin is too small, which results in that the sending power is close to the sum of the receiving sensitivity of the receiving end and the signal strength of the path loss, and the setting effect of the parameter of the signal strength margin is not obvious.
As a non-limiting example, if the receiving end has a receiving sensitivity of-70 db and a path loss of 50db, the signal strength margin should not be lower than 20db in order for the transmission power not to be lower than 0.
In the embodiment of the invention, a preset fixed value is used as the signal strength margin, so that certain signal strength can be increased and then transmitted on the basis of determining the receiving sensitivity of a receiving end and the signal strength of path loss, and the transmission success rate can be improved.
In a second specific implementation manner of the embodiment of the present invention, the signal strength margin may be determined according to a path loss of transmitting wireless data for multiple times; the multi-time transmission wireless data is used for indicating multi-time transmission within a preset time length or multi-time transmission within preset transmission times.
In the embodiment of the invention, the signal intensity margin is determined according to the path loss of the wireless data which is sent for multiple times within the preset time length or sent for multiple times within the preset sending times, the influence of the parameter of the path loss can be added, and the success rate of sending is improved.
Further, determining the signal strength margin according to the difference value of the maximum value and the minimum value of the path loss of the wireless data sent for multiple times; wherein the larger the difference, the larger the signal strength margin.
In the embodiment of the present invention, it is determined that the larger the signal strength margin is according to the larger the difference between the maximum value and the minimum value of the path loss of the wireless data transmitted multiple times, when the path loss is unstable and the peak-to-valley value difference is large, the larger signal strength margin is adopted to increase the transmission power to a greater extent, thereby reducing the possibility of transmission failure and further improving the transmission quality.
In a third specific implementation manner of the embodiment of the present invention, the signal strength margin may be determined according to the receiving sensitivity of the receiving end; wherein the smaller the receiving sensitivity is, the larger the signal strength margin is.
In the embodiment of the invention, a larger signal strength margin can be set for the condition that the receiving sensitivity is small and the wireless data is not easy to accurately receive, a smaller signal strength margin is set for the condition that the receiving sensitivity is large and the wireless data is easy to accurately receive, the influence of the parameter of the receiving sensitivity can be added, and the success rate of sending is favorably improved.
Further, the receiving sensitivities correspond to the signal strength margins one to one, and the sum of each receiving sensitivity and the corresponding signal strength margin is within a preset signal strength range.
In the reception sensitivity table shown in table 1, in the case where the reception sensitivity is-92.4 db, the signal strength margin can be set to about 20 db; in the case where the reception sensitivity is-72.7 db, the signal strength margin may be set to about 2db so that the sum of each reception sensitivity and the corresponding signal strength margin is close, for example, within a preset signal strength range.
In the embodiment of the present invention, the smaller the receiving sensitivity is, the larger the signal strength margin can be adopted in the case that the lowest signal strength capable of receiving the wireless data is smaller, the transmission power can be increased to a greater extent, and by setting the sum of each receiving sensitivity and the corresponding signal strength margin within the preset signal strength range, the excessively high set signal strength margin can be avoided, and the transmission power can be set more uniformly, so that the possibility of transmission failure is reduced, and the transmission quality is further improved.
In the embodiment of the present invention, a signal strength margin for transmitting the wireless data may be further determined, so as to determine the transmission power by using the sum of the reception sensitivity of the receiving end, the signal strength of the path loss, and the signal strength margin, and the transmission power may be increased by setting the signal strength margin on the basis of the lowest signal strength at which the receiving end can receive the wireless data, so that it is possible to avoid transmission failure due to a change in the path loss and the like by using only the lowest signal strength, thereby improving the transmission quality.
Further, the step of determining the transmission power based on at least the sum of the reception sensitivity of the receiving end and the signal strength of the path loss may include:
Tx_power＝Rx_sensitivity+Path_loss+Margin；
wherein Tx _ power is used to represent the signal strength of the transmission power; rx _ sensitivity is used to represent the reception sensitivity of the receiving end; path _ loss is used to represent the Path loss; margin is used to represent a signal strength Margin for transmitting the wireless data.
It can be understood that, in the embodiment of the present invention, even if Margin is added, the signal strength of the obtained transmission power is less than the maximum transmission power of the transmitting end itself with a high probability, on the basis of considering the receiving sensitivity of the receiving end and the path loss.
In the wireless data transmission method disclosed by the embodiment of the invention, one end of the sending end and the receiving end comprises the wireless earphone, and the other end of the sending end and the receiving end comprises the intelligent terminal.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a wireless data transmitting apparatus according to an embodiment of the present invention. The wireless data transmission apparatus may include:
a rate determination module 31 adapted to determine a sending rate;
a sensitivity determining module 32, adapted to determine a receiving sensitivity of a receiving end according to the sending rate, where the receiving sensitivity is used to indicate a lowest signal strength at which the receiving end can receive the wireless data;
a path loss determining module 33, adapted to determine a path loss, where the path loss is used to represent a signal strength of a loss on a path where the wireless data is transmitted to the receiving end;
a power determination module 34 adapted to determine a transmit power at least according to a sum of a receive sensitivity of the receiving end and a signal strength of the path loss;
a sending module 35, adapted to send the wireless data with the sending power.
For the principle, specific implementation and beneficial effects of the wireless data transmission apparatus, reference is made to the foregoing description related to the wireless data transmission method shown in fig. 1, and details thereof are not repeated here.
It should be noted that the technical solution of the present invention is applicable to a 5G (5 Generation) communication system, a 4G communication system, a 3G communication system, and various future new communication systems, such as 6G, 7G, and the like.
Embodiments of the present invention further provide a storage medium, on which computer instructions are stored, and when the computer instructions are executed, the steps of the wireless data transmission method shown in fig. 1 are executed. The storage medium may be a computer-readable storage medium, and may include, for example, non-volatile (non-volatile) or non-transitory (non-transitory) memory, and may also include optical disks, mechanical hard disks, solid state hard disks, and so on.
Specifically, in the embodiment of the present invention, the processor may be a Central Processing Unit (CPU), and the processor may also be other general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example and not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM), synchronous DRAM (SLDRAM), synchronous Link DRAM (SLDRAM), and direct bus RAM (DR RAM).
An embodiment of the present invention further provides a terminal, which includes a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the computer instructions to perform the steps of the wireless data transmission method shown in fig. 1. The terminal includes, but is not limited to, a mobile phone, a computer, a tablet computer and other terminal devices.
Specifically, a terminal in this embodiment may refer to various forms of User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station (mobile station, MS), a remote station, a remote terminal, a mobile device, a user terminal, a terminal device (terminal device), a wireless communication device, a user agent, or a user equipment. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (16)

1. A method for transmitting wireless data, comprising the steps of:
determining a sending rate;
determining the receiving sensitivity of a receiving end according to the sending rate, wherein the receiving sensitivity is used for representing the lowest signal strength of the wireless data which can be received by the receiving end;
determining a path loss, wherein the path loss is used for representing the signal strength of the loss on a path of the wireless data transmitted to the receiving end;
determining transmission power at least according to the receiving sensitivity of the receiving end and the sum of the signal intensity of the path loss;
transmitting the wireless data with the transmission power;
wherein, according to the sending rate, determining the receiving sensitivity of the receiving end comprises:
searching a receiving sensitivity table of the receiving end according to the sending rate so as to determine the receiving sensitivity of the receiving end;
wherein the receiving sensitivity table is used for indicating the relation between different sending rates and receiving sensitivities;
and in the receiving sensitivity table, the configuration of the sending rate is expressed by MCS index values.
2. The method of claim 1, wherein determining the path loss comprises:
detecting the space distance between a sending end and a receiving end by adopting an RTT (round trip time) measuring technology;
and determining the path loss according to the space distance.
3. The method of claim 1, wherein determining the transmission power according to at least a sum of a reception sensitivity of the receiving end and a signal strength of the path loss comprises:
Tx_power＝Rx_sensitivity+Path_loss；
wherein Tx _ power is used to represent the signal strength of the transmission power; rx _ sensitivity is used to represent the receiving sensitivity of the receiving end; path _ loss is used to represent the Path loss.
4. The method of claim 1, further comprising, before determining the transmission power based on at least a sum of a reception sensitivity of the receiving end and a signal strength of the path loss:
determining a signal strength margin for transmitting the wireless data.
5. The method according to claim 4,
and adopting a preset fixed value as the signal strength margin.
6. The method according to claim 4,
determining the signal strength margin according to the path loss of the wireless data which is sent for multiple times;
the multi-time transmission wireless data is used for indicating multi-time transmission within a preset time length or multi-time transmission within preset transmission times.
7. The method according to claim 6,
determining the signal intensity margin according to the difference value of the maximum value and the minimum value of the path loss of the wireless data sent for multiple times;
wherein the larger the difference, the larger the signal strength margin.
8. The method according to claim 4,
determining the signal intensity allowance according to the receiving sensitivity of the receiving end;
wherein the smaller the receiving sensitivity is, the larger the signal strength margin is.
9. The method according to claim 8,
the receiving sensitivities correspond to the signal strength margins one by one, and the sum of each receiving sensitivity and the corresponding signal strength margin is within a preset signal strength range.
10. The method of claim 4, wherein determining the transmission power based on at least a sum of the reception sensitivity of the receiving end and the signal strength of the path loss comprises:
Tx_power＝Rx_sensitivity+Path_loss+Margin；
wherein Tx _ power is used to represent the signal strength of the transmission power; rx _ sensitivity is used to represent the receiving sensitivity of the receiving end; path _ loss is used to represent the Path loss; margin is used for representing a signal strength Margin for transmitting the wireless data.
11. The method of claim 1, wherein the determining the transmission rate comprises:
and determining the sending rate according to the historical sending success rate of sending the wireless data for multiple times within the preset time length or sending the wireless data for multiple times within the preset sending times.
12. The method according to claim 1, wherein the first data transmission unit is further configured to transmit the first data,
the reception sensitivity table is previously received from the receiving end through a WiFi management frame or a WiFi data frame.
13. The method according to claim 1, wherein the first data transmission unit is further configured to transmit the first data,
one end of the sending end and the receiving end comprises a wireless earphone, and the other end of the sending end and the receiving end comprises an intelligent terminal.
14. A wireless data transmission apparatus, comprising:
a rate determination module adapted to determine a sending rate;
the sensitivity determining module is suitable for determining the receiving sensitivity of a receiving end according to the sending rate, wherein the receiving sensitivity is used for representing the lowest signal strength of the wireless data which can be received by the receiving end;
a path loss determining module, adapted to determine a path loss, where the path loss is used to indicate a signal strength of a loss on a path through which the wireless data is transmitted to the receiving end;
a power determining module, adapted to determine a transmit power according to at least a sum of a receive sensitivity of the receiving end and a signal strength of the path loss;
a transmitting module adapted to transmit the wireless data using the transmission power;
wherein the sensitivity determination module comprises:
the sensitivity determination submodule is used for searching the receiving sensitivity table of the receiving end according to the sending rate so as to determine the receiving sensitivity of the receiving end;
wherein, the receiving sensitivity table is used for indicating the relation between different sending rates and receiving sensitivities;
and in the receiving sensitivity table, the configuration of the sending rate is represented by MCS index values.
15. A storage medium having stored thereon computer instructions, which when executed by a processor, perform the steps of the method for wireless data transmission according to any one of claims 1 to 13.
16. A terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the method of transmitting wireless data according to any of claims 1 to 13.
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