A method, device, terminal equipment and storage medium for realizing SAR control

Abstract

The embodiment of the present application discloses a method, apparatus, terminal device and storage medium for implementing SAR control, the method comprising: obtaining an average time period of a specific absorption rate SAR and a first SAR target value within the average time period; determining the on time and off time of the transmitter within the average time period based on the current first transmission power of the transmitter and the first SAR target value; controlling the on and off time of the transmitter based on the on time and off time of the transmitter within the average time period, so that the SAR average value within the average time period is less than or equal to the first SAR target value. In this way, the transmitter is controlled to work discontinuously, and the SAR average value within the average time period is controlled below a specified value by limiting the on time of the transmitter, and the transmitter always transmits data with a stable transmission power, which can ensure communication quality and avoid the risk of dropped calls.

Description

Technical Field

[0001] The present application relates to communication technology, and in particular to a method, apparatus, terminal equipment and storage medium for implementing SAR control. Background Art

[0002] Specific Absorption Rate (SAR) is an internationally accepted indicator for evaluating the impact of radio waves on the human body. It is a safety indicator and is strictly regulated by regulatory agencies in countries and regions around the world. Currently, the two mainstream standards in the world are 1.6W / Kg of the Federal Communications Commission (FCC) of the United States and 2.0W / Kg of the European Union.

[0003] For signals of different frequencies, the SAR regulatory agencies in different regions have slightly different requirements. For example, the FCC requires that for signals below 3GHz, the average SAR value within a 100-second period must not exceed the upper limit of 1.6W / Kg. However, the real-time SAR value can exceed 1.6W / Kg, as long as the average SAR value within the regulatory period is within the regulatory range.

[0004] In the existing solution, the transceiver (TX) transmits continuously, and the SAR is reduced by reducing the transmit power of TX. The lower transmit power will limit the terminal signal coverage range, and the signal-to-noise ratio (SNR) reaching the base station is lower, thus affecting the communication quality. Summary of the invention

[0005] In order to solve the above technical problems, the embodiments of the present application hope to provide a method, an apparatus, a terminal device and a storage medium for implementing SAR control, which can control the SAR average value to below a specified value while ensuring the communication quality.

[0006] The technical solution of this application is implemented as follows:

[0007] In a first aspect, a method for implementing SAR control is provided, the method comprising:

[0008] Acquire an average time period of the specific absorption rate (SAR) and a first SAR target value within the average time period;

[0009] Determining a turn-on time and a turn-off time of the transmitter within the averaging time period based on a current first transmit power of the transmitter and the first SAR target value;

[0010] Based on the on time and off time of the transmitter in the averaging time period, the transmitter is controlled to be on and off so that the SAR average value in the averaging time period is less than or equal to the first SAR target value.

[0011] In a second aspect, a device for implementing SAR control is provided, the device comprising:

[0012] A configuration unit, configured to obtain an average time period of a specific absorption rate SAR and a first SAR target value within the average time period;

[0013] a determining unit, configured to determine a turn-on time and a turn-off time of the transmitter within the averaging time period based on a current first transmit power of the transmitter and the first SAR target value;

[0014] A control unit is used to control the transmitter to turn on and off based on the on time and off time of the transmitter in the averaging time period, so that the SAR average value in the averaging time period is less than or equal to the first SAR target value.

[0015] In a third aspect, a device for implementing SAR control is provided, comprising: a processor and a memory configured to store a computer program that can be run on the processor,

[0016] Wherein, the processor is configured to execute the steps of the aforementioned method when running the computer program.

[0017] In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored, wherein the computer program implements the steps of the aforementioned method when executed by a processor.

[0018] In the embodiment of the present application, a method, apparatus, terminal device and storage medium for implementing SAR control are provided, the method comprising: obtaining an average time period of the specific absorption rate SAR and a first SAR target value within the average time period; determining the on time and off time of the transmitter within the average time period based on the current first transmission power of the transmitter and the first SAR target value; controlling the on and off time of the transmitter based on the on time and off time of the transmitter within the average time period, so that the SAR average value within the average time period is less than or equal to the first SAR target value. In this way, the transmitter is controlled to work discontinuously, and the SAR average value within the average time period is controlled below a specified value by limiting the on time of the transmitter, and the transmitter always transmits data with a stable transmission power, which can ensure the communication quality and avoid the risk of dropped calls.

[0019] Furthermore, when the transmission data is constant, the transmission time of different modulation methods is different. The transmission time of high-order modulation methods is shorter than that of low-order modulation methods, and the start-up time of the transmitter is shorter; when the start-up time of the transmitter is constant, the high-order modulation method can transmit more data and has higher transmission efficiency than the low-order modulation method. Therefore, the present application selects the modulation method according to the channel quality to achieve flexible setting of different start-up times. Specifically, the highest-order modulation method that matches the current channel quality is preferentially selected, which can shorten the transmission time, for example, shorten the start-up time of the transmitter within the average time period. The highest-order modulation method that matches the current channel quality is preferentially selected. When the start-up time within the average time period remains unchanged, more data can be sent, avoiding the situation where the transmitter must be turned off when data needs to be sent because the SAR average value is close to the specified value, thereby ensuring that the data is sent in a timely manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a communication system;

[0021] Figure 2 A schematic diagram of the structure of a radio frequency unit in a terminal device;

[0022] Figure 3 This is a schematic diagram of the SAR value distribution in the embodiment of this application;

[0023] Figure 4 This is a first flow chart of a method for implementing SAR control in an embodiment of the present application;

[0024] Figure 5 Schematic diagram of SAR value changes during the average time period in the embodiment of the present application Figure 1 ;

[0025] Figure 6 Schematic diagram of SAR value changes during the average time period in the embodiment of the present application Figure 2 ;

[0026] Figure 7 This is a second flow chart of the method for implementing SAR control in an embodiment of the present application;

[0027] Figure 8 Schematic diagram of SAR value changes during the average time period in the embodiment of the present application Figure 3 ;

[0028] Fig. 9 This is a third flow chart of the method for implementing SAR control in an embodiment of the present application;

[0029] Fig.10 This is a schematic diagram of the structure of a device for implementing SAR control in an embodiment of the present application;

[0030] Fig.11 It is a schematic diagram of the composition structure of the terminal device in the embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present application.

[0032] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, High Speed ​​Downlink Packet Access (HSDPA), General Packet Radio Service (GPRS), Enhanced Data Rate for GSM Evolution (EDGE), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system or 5GNR system, etc.

[0033] For example, the communication system 100 used in the embodiment of the present application can be as follows: Figure 1As shown. The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or referred to as a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographical area, and may communicate with a terminal device 120 located in the coverage area. Optionally, the network device 110 may be a network device (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a network device (NodeB, NB) in a WCDMA system, or an evolved network device (Evolutional Node B, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a core network in a 5G network, a base station, and other network-side devices, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

[0034] The communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110. As used herein, a "terminal device" is a terminal device that is configured to communicate via a wireless interface, which may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that may combine cellular radiotelephones with data processing, fax and data communication capabilities; Personal Digital Assistants (PDAs) that may include radiotelephones, pagers, Internet / Intranet access, Web browsers, notepads, calendars and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. The terminal device 120 may refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a PDA, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

[0035] Exemplarily, a hardware structure of a terminal device 120 includes: a radio frequency unit, a WiFi module, an audio output unit, an A / V (audio / video) input unit, a sensor, a display unit, a user input unit, an interface unit, a memory, a processor, and a power supply.

[0036] The RF unit can be used to receive and send signals during the process of sending and receiving information or making calls. Specifically, it receives the downlink information from the base station and sends it to the processor for processing; in addition, it sends the uplink data to the base station. Figure 2 The radio frequency unit shown includes at least a transceiver 200, a transmission link power amplifier 201, a reception link low noise amplifier 202, and an antenna 203. The transmission power of the signal is controlled by the transceiver. The transceiver has receiving and transmitting functions. In actual applications, the transmitter and the receiver can be configured separately in the radio frequency unit.

[0037] For a given transmit power and antenna status, the location of the SAR hotspot (the point with the highest SAR value) is determined, the distribution of SAR is fixed, and the SAR value (specifically the maximum SAR value) is also determined.

[0038] Figure 3 SAR value distribution diagram in the embodiment of the present application is shown in FIG. Figure 3 As shown in the figure, the dotted circle on the upper left of the device under test (DUT) can be understood as a distribution diagram of equal SAR values ​​(ovals represent the same SAR values, and the further out the ellipse is, the lower the SAR value is). The higher the RF power, the higher the SAR hotspot value (the center of the dotted ellipse), and the lower the RF power, the lower the SAR hotspot value. The regulatory agency's requirement is that the average value of the point with the highest SAR value should not exceed the threshold value required by the regulations, such as: FCC 1.6W / Kg, EU 2.0W / Kg.

[0039] In order to control the SAR value of the electromagnetic wave signal during wireless communication, the embodiment of the present application provides a new method for implementing SAR control, which can control the SAR average value to be below a specified value while ensuring the communication quality.

[0040] Figure 4 FIG. 1 is a first flow chart of a method for implementing SAR control in an embodiment of the present application. Figure 4 As shown, the method may specifically include:

[0041] Step 401: obtaining an average time period of the specific absorption rate SAR and a first SAR target value within the average time period;

[0042] Here, the averaging time period and the first SAR target value are standard parameters set according to different countries / regions to evaluate the impact of radio waves on the human body. The two mainstream standards in the world are: the FCC stipulates that the SAR average value within an averaging time period of 100 seconds shall not exceed the upper limit of 1.6W / Kg, and the international general standard adopted by China and the European Union stipulates that the SAR average value within an averaging time period of 6 minutes shall not exceed the upper limit of 2.0W / Kg.

[0043] For example, if the average time period is 100 seconds, the first SAR target value is 1.6 W / Kg; if the average time period is 6 minutes, the first SAR target value is 2.0 W / Kg. In some embodiments, the first SAR target value may be less than a specified value.

[0044] Step 402: Determine the on time and off time of the transmitter within the averaging time period based on the current first transmission power of the transmitter and the first SAR target value;

[0045] Here, the first transmit power is the transmit power currently used by the transmitter, and the first transmit power may be a maximum transmit power that satisfies the first SAR target value.

[0046] Exemplarily, in some embodiments, based on the SAR average value corresponding to the first transmit power and the first SAR target value, the on time and the off time of the transmitter within the averaging time period are determined.

[0047] Specifically, SAR1=(SAR2*topen) / T; wherein SAR1 is the first SAR target value, SAR2 is the SAR average value corresponding to the first transmit power, topen is the turn-on time, and T is the average time period.

[0048] Step 403: Based on the on time and off time of the transmitter in the averaging time period, control the transmitter to be on and off so that the SAR average value in the averaging time period is less than or equal to the first SAR target value.

[0049] Here, the on time is the total time that the transmitter is allowed to be on within the averaging time period, and is used to limit the on-time of the transmitter. In practical applications, the actual on time of the transmitter should be less than or equal to the total time allowed to be on, so that the SAR average value within the averaging time period is less than or equal to the first SAR target value.

[0050] In some embodiments, based on the transmission service demand, the on and off pattern of the transmitter within the average time period is determined; based on the on and off pattern within the average time period, as well as the on time and the off time, the transmitter is controlled to be on and off.

[0051] Here, the on and off rules are used to implement the transmission service, and the on time and off time are used to limit the SAR average value to not exceed the specified first SAR target value. The transmitter on and off rules can be continuous or discontinuous.

[0052] Exemplarily, in some embodiments, the method further includes: when controlling the transmitter to be turned on and off, obtaining an average SAR value monitored within the averaging time period; when the average SAR value is greater than or equal to a second SAR target value, returning the first transmission power of the transmitter to a second transmission power; wherein the second SAR target value is less than the first SAR target value.

[0053] It can be understood that when the SAR average value monitored during the averaging time period is greater than or equal to the second SAR target value, that is, the SAR average value is close to the first SAR target value, power backoff can further ensure that the first SAR target value is not exceeded. Exemplarily, backoff can be performed at a fixed value. For example, the maximum power of the mobile phone is 23dBm. When the power backoff mechanism is triggered, the transmit power of the mobile phone is backed off at a fixed backoff value (such as 3dB). After the backoff, the transmit power is maintained at 20dBm for transmission.

[0054] Exemplarily, in some embodiments, the method further includes: when controlling the transmitter to be turned on and off, the transmitter uses the first transmission power for data transmission; and when determining that the data transmission is finished, returning the first transmission power of the transmitter to the second transmission power.

[0055] Exemplarily, in some embodiments, the method further includes: when controlling the transmitter to be turned on and off, the transmitter uses the first transmission power to transmit data; and when determining that the data transmission is finished, controlling the transmitter to be turned off.

[0056] That is to say, the transmission power can be adjusted according to actual needs, and it is not necessary to always transmit at the maximum power.

[0057] Figure 5 Schematic diagram of SAR value changes during the average time period in the embodiment of the present application Figure 1 ,like Figure 5 As shown in the figure, the horizontal axis is time, the vertical axis is SAR value, the thin solid line indicates that the transmitter is turned on, and the SAR value when the transmitter is turned on is SAR2, the dotted line indicates that the transmitter is turned off, and the thick solid line corresponds to SAR1 (the first SAR target value). It can be seen that when the transmitter is turned on, SAR2 is greater than SAR1, and it is only necessary to ensure that the average SAR value is less than SAR1 during the entire averaging time period T.

[0058] Figure 6 Schematic diagram of SAR value changes during the average time period in the embodiment of the present application Figure 2 ,like Figure 6As shown, the horizontal axis is time and the vertical axis is transmit power. The time-averaged SAR mechanism allows the real-time transmit power of the transmitter to be higher than Plimit in certain time periods of the averaging time period. Plimit can be understood as the transmit power corresponding to the SAR upper limit value (first SAR target value), but the average transmit power in the averaging time period T should be less than Plimit. The average transmit power can be understood as the transmit power corresponding to the SAR average value. If the real-time transmit power P1 is too large or the time is too long, the corresponding SAR average value will exceed the SAR upper limit value. At time t, because the average transmit power approaches Plimit, in order not to exceed Pimit, the real-time power needs to be transmitted at a level lower than Plimit, that is, P1 falls back to P2, but the average transmit power in the averaging time period ≤ Plimit.

[0059] By adopting the above technical solution, the transmitter is controlled to work discontinuously. By limiting the on-time of the transmitter, the SAR average value within the averaging time period is controlled below the specified value. The transmitter always transmits data with a stable transmission power, which can ensure the communication quality and avoid the risk of dropped calls.

[0060] In order to better reflect the purpose of this application, further examples are given based on the above embodiments of this application. Figure 7 As shown, the method specifically includes:

[0061] Step 701: obtaining an average time period of the specific absorption rate SAR and a first SAR target value within the average time period;

[0062] Step 702: Determine the on time and off time of the transmitter within the averaging time period based on the current first transmission power of the transmitter and the first SAR target value;

[0063] Step 703: Obtain channel quality parameters;

[0064] Step 704: Determine, based on the channel quality parameter, a second modulation mode that matches the current channel quality from multiple modulation modes;

[0065] Here, the channel quality parameter is used to characterize the interference situation of the current channel. When the interference situation of the current channel is serious, a low-order modulation mode is selected, and when the interference situation of the current channel is not serious, a high-order modulation mode is selected. The channel quality parameter can be a channel quality indicator (CQI), and the transmission data block size, coding mode, modulation mode, etc. are determined according to the size of the CQI.

[0066] An inherent characteristic of high-order modulation is its poor anti-interference ability. If data is transmitted in a noisy environment and the noise exceeds the threshold that the modulation method can withstand, the transmission rate will decrease and it will be necessary to switch to a low-order modulation method. When the channel quality recovers, it will be necessary to switch to a high-order modulation method.

[0067] Step 705: Switch the modulation mode of the signal from the current first modulation mode to the second modulation mode;

[0068] The first modulation method and the second modulation method are different.

[0069] The current 3G / 4G / 5G systems such as WCDMA / LTE / NR use a variety of modulation technologies, such as Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), Quadrature Amplitude Modulation (QAM), and other modulation technologies. Common forms of QAM include 16QAM, 32QAM, 64QAM, and 256QAM. Different digital modulation technologies have different spectrum utilization efficiencies. Even if the same symbol rate is used to send and receive data, high-order modulation can complete data transmission in a shorter time because one symbol carries more information. However, an inherent characteristic of high-order modulation is poor anti-interference ability. If data is transmitted in a noisy environment, when the noise exceeds the threshold value that the modulation method can withstand, the transmission rate will decrease.

[0070] The comparison of spectrum utilization of different modulation methods is as follows. The more complex the modulation method, the higher the transmission efficiency per unit time / unit spectrum.

[0071]

[0072]

[0073] For a given time period, assuming that 100KB of data needs to be transmitted, the time required to send it through different modulation methods is different. Table 1 lists the time required to send 100KB of data using the modulation methods commonly used in current mobile communication systems (assuming that the transmission time of a modulation symbol is 0.1ms).

[0074] Table 1

[0075] Modulation Number of bits contained in a single symbol Transmission time (seconds) BPSK 1 80 QPSK 2 40 16QAM 4 20 64QAM 6 13 256QAM 8 10

[0076] When the transmission data is constant, the transmission time of different modulation methods is different. Compared with the low-order modulation method, the transmission time of the high-order modulation method is shorter, and the transmitter opening time is shorter; when the transmitter opening time is constant, the high-order modulation method can transmit more data and has higher transmission efficiency than the low-order modulation method. Therefore, this application selects the modulation method according to the channel quality to achieve flexible setting of different opening times.

[0077] Exemplarily, in some embodiments, the modulation order of the second modulation mode is higher than the modulation order of the first modulation mode. After switching the modulation mode from the current first modulation mode to the second modulation mode, the method also includes: shortening the turn-on time of the transmitter within the average time period.

[0078] Prioritize the highest order modulation method that matches the current channel quality, which can shorten the transmission time, such as shortening the transmitter's on time within the averaging time period. Prioritize the highest order modulation method that matches the current channel quality, which can send more data when the on time within the averaging time period remains unchanged, avoiding the situation where the transmitter must be turned off when data needs to be sent because the SAR average value is close to the specified value, and ensuring that data is sent in a timely manner.

[0079] Step 706: Based on the on time and off time of the transmitter within the average time period, control the transmitter to be on and off, and perform signal modulation based on a second modulation method.

[0080] Figure 8 Schematic diagram of SAR value changes during the average time period in the embodiment of the present application Figure 3 ,like Figure 7 As shown, the horizontal axis is time, the vertical axis is SAR value, the thin solid line indicates that the transmitter is turned on, and the SAR value when the transmitter is turned on is SAR2, the dotted line indicates that the transmitter is turned off, and the thick solid line corresponds to SAR1 (the first SAR target value). It can be seen that in the first half of the averaging time period T, the 256QAM modulation mode is used, and the channel quality deteriorates in the second half and switches to the QPSK modulation mode. Regardless of which modulation mode is used, the transmitter turn-on time in the averaging time period cannot exceed the total time allowed to be turned on, ensuring that the average SAR value in the entire averaging time period T is less than SAR1.

[0081] By adopting the above technical solution, the data to be transmitted can be compressed and transmitted in a shorter time by adjusting the modulation method of the signal, which can shorten the start-up time of the transmitter and achieve the average SAR value within the average time period meeting the design target value.

[0082] In order to better reflect the purpose of this application, further examples are given based on the above embodiments of this application. Fig. 9As shown, the method specifically includes:

[0083] Step 901: obtaining an average time period of the specific absorption rate SAR and a first SAR target value within the average time period;

[0084] Step 902: Obtaining the corresponding SAR average value when the transmitter uses different transmission powers for transmission;

[0085] Step 903: Selecting a transmit power whose SAR average value is closest to the first SAR target value as the first transmit power;

[0086] Here, the first transmit power may be understood as a maximum transmit power that satisfies the first SAR target value limit.

[0087] Step 904: determining a start time and a shut down time of the transmitter within the average time period based on the SAR average value corresponding to the transmitter transmitting at the first transmit power and the first SAR target value;

[0088] Specifically, SAR1=(SAR2*topen) / T; wherein SAR1 is the first SAR target value, SAR2 is the SAR average value corresponding to the first transmit power, topen is the turn-on time, and T is the average time period.

[0089] Step 905: Determine the transmission time of the transmission data based on the current modulation mode;

[0090] Assuming that the time to transmit a modulation symbol is 0.1ms (which can be determined based on the ability of different systems to implement digital modulation), the time to transmit a single modulation symbol using different modulation methods is calculated and recorded as T0 (different modulation methods have different T0). Based on the size of the transmitted data, the transmission time required to complete the transmission under different modulation methods can be obtained.

[0091] Step 906: Based on the transmission time, based on the on time and off time within the average time period, control the transceiver to turn on and off to perform data transmission.

[0092] Here, when the transmission time is less than the opening time, the opening time can be shortened according to the transmission time. When the transmission time is greater than the opening time, the total time period can be determined. Furthermore, the actual opening time within the average time period can be flexibly set, and the actual opening time only needs to be limited to not exceed the total time allowed for opening.

[0093] The above technical solution has the following advantages:

[0094] 1) The transmitter always transmits data at a stable transmission power, which can ensure the communication quality and avoid the risk of dropped calls;

[0095] 2) When not sending data, the transmitter is turned off, which can significantly reduce power consumption;

[0096] 3) There is no additional hardware cost. It only needs to add a software control mechanism to the current hardware circuit architecture. The target of different SAR average values ​​can be achieved by software controlling the start-up time of the transceiver (also called the transmission time). It can adapt to the SAR regulatory limits of different regions / countries and has excellent flexibility.

[0097] 4) The switching of various modulation modes in this case provides flexible options for achieving different TX off times.

[0098] It should be noted that the method for implementing SAR control provided in the embodiment of the present application can be applied to single-carrier wireless communication systems and multi-carrier wireless communication systems. For example, OFDM technology is one of the implementation methods of multi-carrier transmission schemes. The subcarriers of OFDM are 15KHz / 30KHz / 60KHz (common subcarrier spacing), and the modulation method for the subcarrier can adopt the above-mentioned BPSK, QPSK / QAM and other modulation methods.

[0099] To implement the method of the embodiment of the present application, based on the same inventive concept, the embodiment of the present application also provides a device for implementing SAR control, such as Fig.10 As shown, the device 100 for implementing SAR control includes:

[0100] An acquisition unit 1001 is used to acquire an average time period of a specific absorption rate SAR and a first SAR target value within the average time period;

[0101] A determining unit 1002 is configured to determine a turn-on time and a turn-off time of the transmitter within the averaging time period based on a current first transmit power of the transmitter and the first SAR target value;

[0102] The control unit 1003 is used to control the transmitter to turn on and off based on the on time and off time of the transmitter in the averaging time period, so that the SAR average value in the averaging time period is less than or equal to the first SAR target value.

[0103] In this way, the transmitter is controlled to work discontinuously, and the SAR average value within the averaging time period is controlled below the specified value by limiting the transmitter's on time. The transmitter always transmits data at a stable transmission power, which can ensure communication quality and avoid the risk of dropped calls.

[0104] Exemplarily, in some embodiments, the control unit 1003 is also used to obtain a channel quality parameter; based on the channel quality parameter, determine a second modulation mode that matches the current channel quality from multiple modulation modes; switch the modulation mode from the current first modulation mode to the second modulation mode; wherein the first modulation mode and the second modulation mode are different.

[0105] In this way, when the transmission data is constant, the transmission time of different modulation methods is different. The transmission time of high-order modulation methods is shorter than that of low-order modulation methods, and the transmitter is turned on for a shorter time. When the transmitter is turned on for a certain time, high-order modulation methods can transmit more data and have higher transmission efficiency than low-order modulation methods. Therefore, the present application selects the modulation method according to the channel quality to achieve flexible setting of different turn-on times.

[0106] Exemplarily, in some embodiments, the modulation order of the second modulation mode is higher than the modulation order of the first modulation mode, and the control unit 1003 is also used to shorten the start time of the transmitter within the average time period after switching the modulation mode from the current first modulation mode to the second modulation mode.

[0107] In this way, the highest order modulation method that matches the current channel quality is preferentially selected, which can shorten the transmission time, for example, shorten the on time of the transmitter within the averaging time period. The highest order modulation method that matches the current channel quality is preferentially selected. When the on time within the averaging time period remains unchanged, more data can be sent, avoiding the situation where the transmitter must be turned off when data needs to be sent because the SAR average value is close to the specified value, ensuring that the data is sent in time.

[0108] Exemplarily, in some embodiments, the determination unit 1002 is further used to obtain the corresponding SAR average value when the transmitter adopts different transmission powers for transmission; and select the transmission power whose SAR average value is closest to the first SAR target value as the first transmission power.

[0109] Exemplarily, in some embodiments, the determination unit 1002 is specifically used to obtain the SAR average value corresponding to when the transmitter adopts the first transmission power for transmission; based on the SAR average value corresponding to the first transmission power and the first SAR target value, determine the on time and off time of the transmitter within the averaging time period.

[0110] Exemplarily, in some embodiments, the control unit 1003 is also used to control the transmitter to be turned on and off, and obtain the SAR average value monitored within the averaging time period; when the SAR average value is greater than or equal to a second SAR target value, the first transmission power of the transmitter is returned to a second transmission power; wherein the second SAR target value is less than the first SAR target value.

[0111] Exemplarily, in some embodiments, the control unit 1003 is also used to control the transmitter to be turned on and off, and the transmitter uses the first transmission power to transmit data; when the data transmission is determined to be finished, the first transmission power of the transmitter is returned to the second transmission power.

[0112] Based on the hardware implementation of each unit in the above-mentioned device for implementing SAR control, the embodiment of the present application also provides a terminal device, such as Fig.11 As shown, the terminal device 120 includes: a processor 1101 and a memory 1102 configured to store a computer program that can be run on the processor;

[0113] The processor 1101 is configured to execute the method steps in the aforementioned embodiment when running a computer program.

[0114] Of course, in practical applications, Fig.11 As shown, the various components in the terminal device are coupled together through a bus system 1103. It can be understood that the bus system 1103 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 1103 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, various buses are marked as bus system 1103 in the figure.

[0115] In practical applications, the processor may be at least one of an application-specific integrated circuit (ASIC), a digital signal processing device (DSPD), a programmable logic device (PLD), a field-programmable gate array (FPGA), a controller, a microcontroller, and a microprocessor. It is understandable that for different devices, the electronic device used to implement the functions of the processor may also be other, and the embodiments of the present application do not specifically limit this.

[0116] The above-mentioned memory can be a volatile memory (volatile memory), such as a random access memory (RAM); or a non-volatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory, a hard disk (HDD) or a solid-state drive (SSD); or a combination of the above-mentioned types of memory, and provide instructions and data to the processor.

[0117] In practical applications, the above device can be a terminal device or a chip applied to a terminal device. In the present application, the device can realize the functions of multiple units by software, hardware, or a combination of software and hardware, so that the device can execute the method for realizing SAR control as provided in any of the above embodiments. The technical effects of each technical solution of the device can refer to the technical effects of the corresponding technical solution in the method for realizing SAR control, and the present application will not elaborate on this one by one.

[0118] In an exemplary embodiment, the embodiment of the present application further provides a computer-readable storage medium, such as a memory including a computer program, and the computer program can be executed by a processor of a terminal device to complete the steps of the aforementioned method.

[0119] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0120] Optionally, the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0121] The embodiment of the present application also provides a computer program.

[0122] Optionally, the computer program can be applied to the terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0123] It should be understood that the terms used in the present application are only for the purpose of describing specific embodiments, but are not intended to limit the present application. The singular forms of "a", "said" and "the" used in the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in this article refers to and includes any or all possible combinations of one or more associated listed items. The expressions "having", "may have", "include" and "include", or "may include" and "may include" in this application can be used to indicate the presence of corresponding features (e.g., elements such as numerical values, functions, operations or components), but the presence of additional features is not excluded.

[0124] It should be understood that although the terms first, second, third, etc. may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other and are not necessarily used to describe a specific order or sequence. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information.

[0125] The technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0126] In the several embodiments provided in the present application, it should be understood that the disclosed methods, devices and equipment can be implemented in other ways. The embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0127] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the scheme of this embodiment.

[0128] In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be a separate unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0129] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

Claims

1. A method for implementing SAR control, characterized in that: The method comprises: Acquire an average time period of the specific absorption rate (SAR) and a first SAR target value within the average time period; Determining a turn-on time and a turn-off time of the transmitter within the averaging time period based on a current first transmit power of the transmitter and the first SAR target value; Based on the on time and off time of the transmitter in the averaging time period, control the transmitter to be on and off so that the SAR average value in the averaging time period is less than or equal to the first SAR target value; The method further comprises: Obtain channel quality parameters; Based on the channel quality parameter, determining a second modulation mode matching the current channel quality from a plurality of modulation modes; Switching the modulation mode of the signal from the current first modulation mode to the second modulation mode; Wherein, the first modulation mode and the second modulation mode are different; The controlling the transmitter to be turned on and off based on the on time and off time of the transmitter in the averaging time period so that the SAR average value in the averaging time period is less than or equal to the first SAR target value includes: Determining a transmission time for transmitting data based on a second modulation mode matched with the current channel quality; Based on the transmission time, and the on time and off time of the transmitter in the averaging time period, control the transmitter to be on and off so that the SAR average value in the averaging time period is less than or equal to the first SAR target value; The method further comprises: When controlling the transmitter to be turned on and off, the transmitter uses the first transmission power to transmit data; Determine that data transmission is finished, and return the first transmission power of the transmitter to a second transmission power.

2. The method according to claim 1, characterized in that: The modulation order of the second modulation method is higher than the modulation order of the first modulation method, After switching the modulation mode from the current first modulation mode to the second modulation mode, the method further includes: The on time of the transmitter during the averaging time period is shortened.

3. The method according to claim 1, characterized in that The method further comprises: Obtaining the SAR average value corresponding to when the transmitter transmits at different transmission powers; The transmit power whose SAR average value is closest to the first SAR target value is selected as the first transmit power.

4. The method according to claim 3, characterized in that The determining, based on the current first transmission power of the transmitter and the first SAR target value, the on time and the off time of the transmitter within the averaging time period comprises: Obtaining a corresponding SAR average value when the transmitter transmits using the first transmit power; Based on the SAR average value corresponding to the first transmit power and the first SAR target value, a turn-on time and a turn-off time of the transmitter within the average time period are determined.

5. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: When controlling the transmitter to be turned on and off, an average SAR value monitored during the averaging time period is obtained; If the SAR average value is greater than or equal to a second SAR target value, the first transmit power of the transmitter is returned to a second transmit power; wherein the second SAR target value is less than the first SAR target value.

6. A device for implementing SAR control, characterized in that: The device comprises: A configuration unit, configured to obtain an average time period of a specific absorption rate SAR and a first SAR target value within the average time period; a determining unit, configured to determine a turn-on time and a turn-off time of the transmitter within the averaging time period based on a current first transmit power of the transmitter and the first SAR target value; A control unit, configured to control the transmitter to be turned on and off based on the on time and off time of the transmitter in the averaging time period, so that the SAR average value in the averaging time period is less than or equal to the first SAR target value; The control unit is further configured to obtain a channel quality parameter; based on the channel quality parameter, determine a second modulation mode that matches the current channel quality from a plurality of modulation modes; and switch the modulation mode from the current first modulation mode to the second modulation mode; wherein the first modulation mode and the second modulation mode are different; The determining unit is further configured to determine a transmission time of transmission data based on the second modulation mode matched with the current channel quality; The control unit is further configured to control the transmitter to be turned on and off based on the transmission time, and the on time and off time of the transmitter in the averaging time period, so that the SAR average value in the averaging time period is less than or equal to the first SAR target value; The control unit is further used to control the transmitter to use the first transmission power for data transmission when the transmitter is turned on and off; and to determine that the data transmission is completed and to return the first transmission power of the transmitter to the second transmission power.

7. A terminal device, characterized in that: The terminal device comprises: a processor and a memory configured to store a computer program that can be run on the processor, Wherein, the processor is configured to execute the steps of the method according to any one of claims 1 to 5 when running the computer program.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

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