WO2022204870A1 - 一种低功耗控制方法及短距离无线通信芯片 - Google Patents

一种低功耗控制方法及短距离无线通信芯片 Download PDF

Info

Publication number
WO2022204870A1
WO2022204870A1 PCT/CN2021/083581 CN2021083581W WO2022204870A1 WO 2022204870 A1 WO2022204870 A1 WO 2022204870A1 CN 2021083581 W CN2021083581 W CN 2021083581W WO 2022204870 A1 WO2022204870 A1 WO 2022204870A1
Authority
WO
WIPO (PCT)
Prior art keywords
received signal
signal strength
time slot
receiving time
value
Prior art date
Application number
PCT/CN2021/083581
Other languages
English (en)
French (fr)
Inventor
陈桐
张泽宏
崔锐
薛少杰
东江
胡必祥
李琪
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2021/083581 priority Critical patent/WO2022204870A1/zh
Priority to EP21933556.9A priority patent/EP4311132A4/en
Priority to CN202180095935.0A priority patent/CN117044133A/zh
Publication of WO2022204870A1 publication Critical patent/WO2022204870A1/zh
Priority to US18/476,053 priority patent/US20240023036A1/en

Links

Images

Classifications

    • 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
    • H04W52/52—TPC using AGC [Automatic Gain Control] circuits or amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H03G3/3078—Circuits generating control signals for digitally modulated signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/25—Monitoring; Testing of receivers taking multiple measurements
    • H04B17/254—Monitoring; Testing of receivers taking multiple measurements measuring at different reception times
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/26—Monitoring; Testing of receivers using historical data, averaging values or statistics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/373—Predicting channel quality or other radio frequency [RF] 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
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0245—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength
    • 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
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0258—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • 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

Definitions

  • the present application relates to the technical field of short-range wireless communication, and in particular, to a low-power consumption control method and a short-range wireless communication chip.
  • BT bluetooth technology
  • BLE bluetooth low energy technology
  • Devices with BT technology or BLE technology come in a variety of product forms. Different product forms cause each device to be designed with its own unique antenna to receive external wireless signals. In order to improve the user experience, even some devices adopt a multi-antenna design. In order to combat the link attenuation between the chip port and the antenna port in the device, most devices are generally designed with an RF front-end module to improve the performance of the device to receive wireless signals.
  • the control method of the receiving device on the receiving path of the radio frequency front-end module usually adopts automatic gain control (automatic gain control, AGC).
  • AGC means that the low noise amplifier (LNA) in the receiving path is set to the enabled state in advance, and then the received signal strength value when the signal of the transmitting device arrives is compared with the enabling threshold value of the LNA. The result of the comparison controls the state of the LNA upon subsequent reception of the signal. Therefore, the enable period of the LNA before the signal from the peer device arrives is an invalid enable period, resulting in a waste of power consumption. The longer the invalid enable period, the greater the power loss, especially for earphones that require long-term connection As far as the receiving device of the sending device is concerned, AGC will bring more unnecessary waste of power consumption to the headset.
  • LNA low noise amplifier
  • Embodiments of the present application provide a low-power consumption control method and a short-range wireless communication chip. By predicting the received signal strength corresponding to the current receiving time slot, and then adjusting the gain coefficient of the receiving path in the radio frequency front-end module according to the predicted value, reaching The purpose of controlling the working state of the LNA shortens the invalid enabling time of the receiving channel in the radio frequency front-end module, and reduces the power consumption of the radio frequency front-end module.
  • an embodiment of the present application provides a low power consumption control method, which is applied to a short-range wireless communication chip.
  • the method includes: acquiring actual values of received signal strengths corresponding to multiple historical receiving time slots; The actual value of the received signal strength corresponding to the time slot determines the predicted value of the received signal strength corresponding to the current receiving time slot; The gain factor of the slot is controlled.
  • the short-distance wireless communication chip predicts the signal strength value to be received in the current receiving time slot, and then adjusts the gain coefficient of the receiving path in the radio frequency front-end module in the current receiving time slot according to the predicted value;
  • the gain coefficient of the receiving channel is adjusted to be non-zero, and the gain coefficient is re-adjusted after the signal is received.
  • the solution of the present application shortens the time when the receiving channel is at a non-zero gain, thereby reducing the power consumption of the RF front-end module and prolonging the short-term gain. The usage time from the wireless communication device.
  • determining the predicted value of the received signal strength corresponding to the current receiving time slot according to the actual value of the received signal strength corresponding to the multiple historical receiving time slots includes: when the received signal strength corresponding to the multiple historical receiving time slots is When the actual values are all greater than the sensitivity limit, an interpolation algorithm is used to obtain the predicted value of the received signal strength based on the actual values of the received signal strength corresponding to multiple historical receiving time slots.
  • the short-range wireless communication chip when the actual values of multiple received signal strengths are all greater than the sensitivity limit of the RF front-end module, it indicates that the short-range wireless communication chip has received signals uninterruptedly in the historical receiving time slot, which means that the short-range wireless communication chip is in the Corresponding historical reception time slots have received signals, which also means that the signal transmitting device has sent signals in the corresponding time slots.
  • the predicted value obtained by interpolating the actual value is closer to the real value, which improves the accuracy of the received signal strength prediction and reduces the prediction error.
  • determining the predicted value of the received signal strength corresponding to the current receiving time slot according to the actual value of the received signal strength corresponding to the multiple historical receiving time slots further includes: when the received signal strength corresponding to the multiple historical receiving time slots is When there is an actual received signal strength value that is not greater than the sensitivity limit value in the actual strength value, the actual received signal strength value corresponding to the first reference time slot in the multiple historical receiving time slots is used as the received signal strength predicted value;
  • the time slot is the last historical reception time slot after the multiple historical reception time slots are arranged in time sequence.
  • determining the predicted value of the received signal strength corresponding to the current receiving time slot according to the actual value of the received signal strength corresponding to a plurality of historical receiving time slots further includes: the current receiving time slot is the starting reception of the transmission cycle When a time slot and a historical reception time slot satisfying the first condition exists in the multiple historical reception time slots, the actual value of the received signal strength corresponding to the second reference time slot in the historical reception time slot satisfying the first condition is used as the received signal Strength prediction value; wherein, the first condition includes that the actual value of the received signal strength corresponding to the historical receiving time slot is greater than the sensitivity limit value, and the second reference time slot is the last one after the historical receiving time slots that satisfy the first condition are arranged in chronological order Historical receive slots.
  • the actual value of the signal strength of the second reference time slot is also an effective value that is closest in time to the current receiving time slot. Effective means that the device receives a signal in this time slot and takes it as the current time slot. Receive the predicted value of the time slot, so that the predicted value can meet the change law of the signal as much as possible, and the error between the predicted value and the future actual value can be reduced to the greatest extent.
  • the receiving path includes a low noise amplifier; and according to the predicted value of the received signal strength, controlling the gain coefficient of the receiving path in the radio frequency front-end module coupled to the short-range wireless communication chip in the current receiving time slot includes: : when the predicted value of the received signal strength satisfies the short-circuit condition, short-circuit the low-noise amplifier to adjust the gain coefficient to zero; wherein, the short-circuit condition includes: the predicted value of the received signal strength is greater than the enabling threshold of the low-noise amplifier, or the received signal The intensity prediction value is less than the sensitivity limit, and the enable threshold value is greater than the sensitivity limit.
  • the predicted value of the received signal strength satisfies the short-circuit condition, indicating that the LNA does not need to enable the signal in the current receiving time slot. Therefore, short-circuit control of the LNA is performed, and the short-circuit control can reduce the power of the RF front-end module. consumption.
  • controlling the gain coefficient of the receiving channel in the radio frequency front-end module coupled to the short-range wireless communication chip in the current receiving time slot according to the predicted value of the received signal strength further includes: when the received signal strength is predicted When the value satisfies the enabling conditions of the RF front-end module, the low-noise amplifier is turned on, so that the gain coefficient is adjusted to the gain value of the low-noise amplifier; wherein the enabling conditions include: the predicted value of the received signal strength is not greater than the enabling threshold and Not less than the sensitivity limit.
  • the predicted value of the received signal strength satisfies the enabling condition, indicating that the low noise amplifier needs to enable the signal in the current receiving time slot, so it is turned on and controlled, and the signal in the current receiving time slot is gain processed.
  • an embodiment of the present application provides a low power consumption control device, the device includes: an acquisition module for acquiring actual values of received signal strengths corresponding to multiple historical reception time slots; a prediction module for The actual value of the received signal strength corresponding to the historical receiving time slot determines the predicted value of the received signal strength corresponding to the current receiving time slot; the control module is used to adjust the RF front-end module coupled to the short-distance wireless communication chip according to the predicted value of the received signal strength.
  • the gain factor of the receive path in the current receive slot is used to adjust the RF front-end module coupled to the short-distance wireless communication chip according to the predicted value of the received signal strength.
  • the prediction module is specifically configured to: when the actual values of the received signal strength corresponding to the multiple historical receiving time slots are all greater than the sensitivity limit, based on the actual receiving signal strength values corresponding to the multiple historical receiving time slots , and use the interpolation algorithm to obtain the predicted value of the received signal strength.
  • the prediction module is further configured to: when there is an actual received signal strength value that is not greater than the sensitivity limit value among the actual received signal strength values corresponding to the multiple historical receiving time slots, the multiple historical receiving The actual value of the received signal strength corresponding to the first reference time slot in the slot is used as the predicted value of the received signal strength, wherein the first reference time slot is the last historical receive time slot after chronologically arranging multiple historical receive time slots.
  • the prediction module is further configured to: when the current receiving time slot is the initial receiving time slot of the transmission cycle, and there is a historical receiving time slot satisfying the first condition in the multiple historical receiving time slots, The actual value of the received signal strength corresponding to the second reference time slot in the historical receiving time slot that satisfies the first condition is used as the predicted value of the received signal strength; wherein, the first condition includes that the actual value of the received signal strength corresponding to the historical receiving time slot is greater than the sensitivity limit value, the second reference time slot is the last historical reception time slot after the historical reception time slots that satisfy the first condition are arranged in time sequence.
  • the receiving path includes a low-noise amplifier; the control module is specifically configured to: when the predicted value of the received signal strength meets the short-circuit condition, short-circuit the low-noise amplifier, so that the gain coefficient is adjusted to zero; wherein the short-circuit condition Including: the predicted value of the received signal strength is greater than the enable threshold value of the low noise amplifier, or the predicted value of the received signal strength is less than the sensitivity limit value, wherein the enable threshold value is greater than the sensitivity limit value.
  • control module is further configured to: when the predicted value of the received signal strength satisfies the enabling condition of the low-noise amplifier, turn on the low-noise amplifier, so that the gain coefficient is adjusted to the gain value of the low-noise amplifier;
  • the enabling conditions include: the predicted value of the received signal strength is not greater than the enabling threshold value and not less than the sensitivity limit value.
  • an embodiment of the present application provides a short-range wireless communication chip, which is applied to a short-range wireless communication device.
  • the short-range wireless communication chip includes: at least one processor and a memory, and the at least one processor is used to call storage in the memory. to execute the method provided in the first aspect.
  • determining the predicted value of the received signal strength corresponding to the current receiving time slot according to the actual value of the received signal strength corresponding to the multiple historical receiving time slots includes: when the received signal strength corresponding to the multiple historical receiving time slots is When the actual values are all greater than the sensitivity limit, an interpolation algorithm is used to obtain the predicted value of the received signal strength based on the actual values of the received signal strength corresponding to multiple historical receiving time slots.
  • determining the predicted value of the received signal strength corresponding to the current receiving time slot according to the actual value of the received signal strength corresponding to the multiple historical receiving time slots further includes: when the received signal strength corresponding to the multiple historical receiving time slots is When there is an actual received signal strength value that is not greater than the sensitivity limit value in the actual strength value, the actual received signal strength value corresponding to the first reference time slot in the multiple historical receiving time slots is used as the received signal strength predicted value;
  • the time slot is the last historical reception time slot after the multiple historical reception time slots are arranged in time sequence.
  • determining the predicted value of the received signal strength corresponding to the current receiving time slot according to the actual value of the received signal strength corresponding to a plurality of historical receiving time slots further includes: the current receiving time slot is the starting reception of the transmission cycle When a time slot and a historical reception time slot satisfying the first condition exists in the multiple historical reception time slots, the actual value of the received signal strength corresponding to the second reference time slot in the historical reception time slot satisfying the first condition is used as the received signal strength prediction value; wherein, the first condition includes that the actual value of the received signal strength corresponding to the historical reception time slot is greater than the sensitivity limit value, and the second reference time slot is the historical reception that will satisfy the first condition.
  • the last historical reception slot after the slots are arranged in chronological order.
  • the receiving path includes a low noise amplifier; according to the predicted value of the received signal strength, the gain coefficient of the receiving path in the radio frequency front-end module coupled to the short-range wireless communication chip in the current receiving time slot is performed.
  • the control includes: when the predicted value of the received signal strength meets the short-circuit condition of the low-noise amplifier, the low-noise amplifier is short-circuited so that the gain coefficient is adjusted to zero; wherein the short-circuit condition includes: the predicted value of the received signal strength is greater than the enable gate of the low-noise amplifier The limit value or the predicted value of the received signal strength is less than the sensitivity limit value, and the enable threshold value is greater than the sensitivity limit value.
  • controlling the gain coefficient of the receiving channel in the radio frequency front-end module coupled to the short-range wireless communication chip in the current receiving time slot according to the predicted value of the received signal strength further includes: when the received signal strength is predicted When the value satisfies the enabling condition of the low-noise amplifier, the low-noise amplifier is turned on, so that the gain coefficient is adjusted to the gain value of the low-noise amplifier; wherein, the enabling condition includes: the predicted value of the received signal strength is not greater than the enabling threshold and Not less than the sensitivity limit.
  • an embodiment of the present application provides a radio frequency front-end module, the radio frequency front-end module includes a transmission path and a reception path, and the state of the reception path in the current reception time slot is determined according to the received signal strength prediction value corresponding to the current reception time slot, wherein , the received signal strength predicted value is obtained according to the corresponding actual received signal strength values of multiple historical receiving time slots.
  • control circuit is specifically configured to: when the actual value of the received signal strength corresponding to the multiple historical receiving time slots is greater than the sensitivity limit, the actual value of the received signal strength corresponding to the multiple historical receiving time slots is based on , and use the interpolation algorithm to obtain the predicted value of the received signal strength.
  • control circuit is further configured to: when there is an actual received signal strength value not greater than the sensitivity limit value among the actual received signal strength values corresponding to the multiple historical receiving time slots, The actual value of the received signal strength corresponding to the first reference time slot in the slot is used as the predicted value of the received signal strength; wherein, the first reference time slot is the last historical reception time slot after arranging multiple historical reception time slots in time sequence.
  • control circuit is further configured to: when the current receiving time slot is the initial receiving time slot of the transmission cycle, and there is a historical receiving time slot satisfying the first condition in the multiple historical receiving time slots, The actual value of the received signal strength corresponding to the second reference time slot in the historical receiving time slot that satisfies the first condition is used as the predicted value of the received signal strength; wherein, the first condition includes that the actual value of the received signal strength corresponding to the historical receiving time slot is greater than the sensitivity limit value, the second reference time slot is the last historical reception time slot after the historical reception time slots that satisfy the first condition are arranged in time sequence.
  • control circuit is further configured to: when the predicted value of the received signal strength satisfies the short-circuit condition of the low-noise amplifier, short-circuit the low-noise amplifier, so that the gain coefficient is adjusted to zero; wherein the short-circuit condition includes: receiving The predicted value of the signal strength is greater than the enable threshold value of the low noise amplifier, or the predicted value of the received signal strength is less than the sensitivity limit value, and the enable threshold value is greater than the sensitivity limit value.
  • control circuit is further configured to: when the predicted value of the received signal strength satisfies the enabling condition of the low-noise amplifier, turn on the low-noise amplifier, so that the gain coefficient is adjusted to the gain value of the low-noise amplifier;
  • the enabling conditions include: the predicted value of the received signal strength is not greater than the enabling threshold value and not less than the sensitivity limit value.
  • an embodiment of the present application provides a short-range wireless communication device.
  • the short-range wireless communication device includes: the short-range wireless communication chip provided in the second aspect and the radio frequency front-end module provided in the fourth aspect, wherein, The radio frequency front-end module is coupled to the short-range wireless communication chip.
  • an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program code, and when the computer program code is executed by a short-range wireless communication device, the short-range wireless communication device executes the above-mentioned first step. method on the one hand.
  • FIG. 1 is a schematic structural diagram of a BT system in a short-range wireless communication device provided by the present application
  • FIG. 2 is a flowchart of a low power consumption control method in an aperiodic service provided by an embodiment of the present application
  • FIG. 3 is a sequence diagram of a non-periodic continuous interactive wireless service provided by an embodiment of the present application.
  • FIG. 4 is a sequence diagram of a non-periodic discontinuous interactive wireless service provided by an embodiment of the present application.
  • FIG. 5 is a flowchart of a low power consumption control method in a periodic service provided by an embodiment of the present application
  • 6a is a sequence diagram of a periodic interactive wireless service provided by an embodiment of the present application.
  • 6b is a sequence diagram of a periodic interactive wireless service provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a radio frequency front-end module provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a low power consumption control device provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a computing device provided by an embodiment of the present application.
  • words such as “exemplary”, “such as” or “for example” are used to mean serving as an example, illustration or illustration. Any embodiments or designs described in the embodiments of the present application as “exemplary,” “such as,” or “by way of example” should not be construed as preferred or advantageous over other embodiments or designs. Rather, use of words such as “exemplary,” “such as,” or “by way of example” is intended to present the related concepts in a specific manner.
  • the term "and/or" is only an association relationship for describing associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate: A alone exists, A alone exists There is B, and there are three cases of A and B at the same time.
  • the term "plurality" means two or more.
  • multiple systems refer to two or more systems
  • multiple screen terminals refer to two or more screen terminals.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the indicated technical features. Thus, a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature.
  • the terms “including”, “including”, “having” and their variants mean “including but not limited to” unless specifically emphasized otherwise.
  • the RF front-end module Before introducing the low power consumption control scheme of the RF front-end module provided by this application, the RF front-end module, receiving time slot, sending time slot, and received signal strength indication (RSSI) will be introduced first, so as to facilitate the understanding of this application. technical solutions and examples.
  • RSSI received signal strength indication
  • the RF front-end module is a basic component in the short-range wireless communication module, located between the antenna and the short-range wireless communication chip in the short-range wireless communication module.
  • the RF front-end module usually includes: a transmitting channel and a receiving channel. These two channels of the RF front-end module play an important role in wireless communication, that is, in the process of transmitting the signal, the binary signal to be sent is converted into a high-frequency wireless signal , convert the received wireless signal into a binary digital signal in the process of receiving the signal.
  • the RF front-end module is realized by the modules including power amplifier (PA), low noise amplifier (LNA), filter (filters), duplexer (Duplexes), tuner (antenna tuner, AT) and switch. signal conversion.
  • the receiving time slot refers to the period during which the receiving device receives the wireless signal; the sending time slot refers to the period during which the transmitting device sends the wireless signal.
  • the receiving time slot and the sending time slot are used by the present application to distinguish whether the device is in a state of receiving a signal or a state of transmitting a signal in continuous time.
  • the receiving time slot and the sending time slot are consecutive in time, and the two receiving time slots are arranged at intervals in time.
  • the received signal strength value indicates the strength of the signal received by the receiving device, and can be calculated and obtained according to the power of the received signal.
  • RSSI takes the logarithm of the power value of the received signal in the receiving time slot to obtain the actual value of the received signal strength.
  • RSSI can be used to judge the connection quality of the link transmission link, and on the other hand, it can be used to judge whether the RF front-end module performs gain processing on the received signal.
  • the two short-range wireless communication devices are connected through respective BT systems, and short-range wireless signals are transmitted.
  • the above-mentioned short-range wireless communication device may be any one of devices with a short-range wireless communication function, such as a smart phone, a tablet computer, a laptop computer, a desktop computer, a smart watch, a smart bracelet, a wireless headset, etc., This application does not make any specific limitations.
  • the above-mentioned two short-range wireless communication devices may transmit wireless signals interactively, and may also transmit wireless signals unidirectionally; signal will send a feedback signal to the sending device.
  • FIG. 1 is a schematic structural diagram of a BT system provided by an embodiment of the present application, where the BT system is applied to the above-mentioned short-range wireless communication device.
  • the BT system 100 includes a BT chip 110 , a radio frequency front-end module 120 and an antenna 130 .
  • the RF front-end module 120 is coupled to the antenna 130, and the RF front-end module 120 can receive signals from the antenna or transmit signals through the antenna.
  • the RF front-end module 120 includes but is not limited to: PA121 , LNA121 , and bypass circuit 123 . It should be noted that the types and numbers of modules in the radio frequency front-end module 120 are only illustrative examples. In other embodiments, the RF front-end module 120 may include more modules, which is not limited in this application.
  • the power amplifier 121 is disposed on the TX (transport, transmission) path (hereinafter referred to as TX), and is used to perform corresponding processing on the signal input by the BT chip through the transmission circuit, and output the processed signal to the antenna 130 .
  • the LNA 121 is disposed on the RX (receive, receiving) path (hereinafter referred to as RX), and is used to perform corresponding processing on the signal received from the antenna 130 and output the processed signal to the BT chip 110 .
  • the bypass circuit 123 is coupled to both ends of the LNA 121 for controlling the LNA 121 .
  • the BT chip 110 may include:
  • the BT chip 120 is coupled to the RF front-end module 120 , and the BT chip 120 can send signals through the RF front-end module 120 ; the BT chip 120 can receive signals through the RF front-end module 120 .
  • the BT chip 120 can switch the TX and the RX in the RF front-end module 120 through the control signal, and adjust the working state of the LNA 122 in the RX.
  • the LNA122 Take the LNA122 as an example with two working states (enable state and short-circuit state Bypass). Among them, when the LNA122 is in the enabled state, the LNA122 performs gain processing on the signal received by the antenna; when the LNA122 is in the short-circuit state, the LNA122 does not receive the signal received by the antenna. Gain processing is performed, which is equivalent to zero gain.
  • the first control signal is used to control the conduction of the bypass circuit 123 to short-circuit the LNA 122, so that the working state of the LNA 122 is a short-circuit state, so that the gain coefficient of the receiving path is
  • the second control signal is used to control the closure of the bypass circuit 123 to turn on the LNA122, so that the working state of the LNA122 is enabled.
  • the gain of the receiving path The coefficient is the gain value of the LNA122.
  • multi-stage gain coefficients may be set for the receiving path of the radio frequency front-end module, so as to perform multi-stage gain processing on the signal received by the antenna.
  • the receiving channel can implement four kinds of gain processing, 0 to 3, 0 represents zero gain processing, and 1 to 3 represents three different levels of non-zero gain processing; the fourth gain processing corresponds to different gain coefficients and
  • the RSSI of the signal received by the antenna meets the enabling threshold value of the corresponding gear, that is, the gain coefficient of the receiving channel is adjusted to the gain coefficient corresponding to the corresponding gear.
  • multiple LNAs can be set in the receiving path to realize the multi-stage gain processing function of the receiving path, that is, when the gain gear of the receiving path is determined, the LNA corresponding to the corresponding gear is turned on, The LNA is made to perform gain processing on the signal, wherein, in the zero gain gear, all LNAs in the receiving path are short-circuited.
  • two short-range wireless communication devices may periodically transmit short-range wireless services, and may also transmit short-range wireless services aperiodically.
  • the short-range wireless signal received by the receiving device may be a periodic short-range wireless signal or an aperiodic short-range wireless signal.
  • the RX in the radio frequency front-end module needs to be controlled according to the RSSI of the signal sent by the sending device.
  • the LNA122 in the RX is controlled to an enabled state in advance; then, according to the RSSI value monitored by the receiving device on the channel, it is judged whether the receiving path of the radio frequency front-end module needs to perform gain processing on the corresponding signal, specifically, when the signal power is greater than the preset value.
  • the RF front-end module is turned off, and when the signal power is less than the preset value, the RF front-end module is kept turned on and enabled.
  • This method makes the RF front-end module have a large invalid turn-on time, that is, the time between the pre-turn-on and the start of receiving the signal, which undoubtedly increases the power consumption of the receiving device. The longer the time, the greater the power loss of the receiving device. .
  • the short-circuit state An embodiment of the present application provides a low-power consumption control method for a radio frequency front-end module, which is applied to a short-range wireless communication chip, and the short-range wireless communication chip is applied to a short-range wireless communication device.
  • the short-range wireless communication chip takes the aforementioned BT chip 110 as an example.
  • the method for low power consumption control of a radio frequency front-end module is exemplarily described in detail below by taking a short-range wireless communication device aperiodically receiving wireless signals as an example, with reference to FIG. 2 .
  • the method may include the following steps S101-S103.
  • Step S101 Acquire the actual values of received signal strengths corresponding to a plurality of historical receiving time slots before the current receiving time slot as prediction samples.
  • the current reception time slot and a plurality of historical reception time slots are consecutive in time, wherein the current reception time slot refers to a time slot in which the short-range wireless communication device has not yet received a signal. It can be understood that the embodiment of the present application does not limit the number of historical reception time slots.
  • the actual value of the historical received signal strength is used to predict the received signal strength corresponding to the current receiving time slot, and the obtained predicted value represents the signal strength to be received by the BT device in the current receiving time slot.
  • Step S102 Use the prediction samples to predict the received signal strength corresponding to the current receiving time slot.
  • the sensitivity limit can be set according to the sensitivity of the short-range wireless communication device to monitor the signal.
  • the interpolation algorithm can be used to obtain the variation law, so as to obtain the predicted value of the received signal strength corresponding to the current receiving time slot.
  • the interpolation algorithm may be one of nearest neighbor interpolation, bilinear quadratic interpolation, and cubic interpolation, and may also be other interpolation algorithms that can implement the function of predicting received signal strength.
  • the interpolation algorithm when using the interpolation algorithm to obtain the predicted value of the received signal strength corresponding to the current receiving time slot, first determine the change trend of the actual value of the received signal strength corresponding to the historical receiving time slot, and then use the interpolation algorithm to perform the interpolation operation to obtain the current receiving time slot. The predicted value of the received signal strength corresponding to the slot.
  • the received signal strength values of the three receiving time slots before the slot6 are used as prediction samples.
  • the actual received signal strength value RSSI0 corresponding to the first receiving time slot slot0, the actual receiving signal strength value RSSI1 corresponding to the second receiving time slot slot2, and the actual receiving signal strength value RSSI2 corresponding to the third receiving time slot slot4 When all are greater than the sensitivity limit, it means that the short-distance wireless communication device has monitored wireless signals in slot0, slot2 and slot4.
  • the interpolation algorithm can be used to perform interpolation on RSSI0, RSSI1 and RSSI2 to obtain the fourth receiving time slot slot6 Corresponding received signal strength prediction value RSSI3.
  • RSSI3 corresponding to slot6 can be predicted by interpolation algorithm, and RSSI3 will be smaller than RSSI2; when RSSI0 ⁇ RSSI1 ⁇ RSSI2, RSSI3 corresponding to slot6 can be predicted by interpolation algorithm, and RSSI3 will be greater than RSSI2.
  • the distance change between the receiving device and the sending device can be judged by the RSSI value of each time slot. For example, when RSSI0>RSSI1>RSSI2, it indicates that the distance between the short-range wireless communication device and the device sending the signal is different. The distance between them changes from near to far, and when RSSI0 ⁇ RSSI1 ⁇ RSSI2, it means that the distance between the short-range wireless communication device and the device that sends the signal changes from far to near.
  • a receiving time slot as the reference time slot in the actual value of the received signal strength that is greater than the sensitivity limit, and use its corresponding actual value of the received signal strength as the predicted value of the received signal strength corresponding to the current receiving time slot, where the reference time slot It may be the last receive time slot after arranging multiple historical receive time slots in time sequence, that is to say, the reference time slot is a time slot closest to the current receive time slot in time.
  • slot6 is also used as the current receiving time slot, and the received signal strength values of the three time slots of slot0, slot2, and slot4 are used as prediction samples.
  • the actual received signal strength value RSSI0 corresponding to the receiving time slot slot0 is greater than the sensitivity limit
  • the actual receiving signal strength value RSSI1 corresponding to the receiving time slot slot2 and the receiving signal strength actual value RSSI2 corresponding to the receiving time slot slot4 are not greater than the sensitivity limit. , indicating that the short-distance wireless device does not monitor the signal in slot2 and slot4.
  • the RSSI2 corresponding to slot4 is directly used as the corresponding slot6.
  • Step S103 Adjust the gain coefficient of the receiving path in the radio frequency front-end module in the current receiving time slot according to the predicted value of the received signal strength corresponding to the current receiving time slot.
  • the obtained received signal strength prediction value and the preset working conditions of the receiving channel are compared and analyzed, and the gain coefficient and control strategy of the receiving channel in the current receiving time slot are determined.
  • the two cases are realized by controlling whether the LNA in the RX is turned on or off.
  • a short-circuit condition and an enable condition can be set corresponding to two situations. Among them, under the short-circuit condition, the gain coefficient of the receiving path is zero, and no gain processing is performed on the signal; under the enabling condition, the gain coefficient of the receiving path is not zero, and the signal is subjected to gain processing, and the gain coefficient at this time is the LNA in the receiving path. gain value.
  • the short-circuit condition includes: the predicted value of the received signal strength is greater than the enable threshold value, or the predicted value of the received signal strength is less than the sensitivity limit; the enabling condition includes: the predicted value of the received signal strength is between the enable threshold value and the sensitivity limit. between the limits.
  • the enable threshold value is greater than the sensitivity limit value, and the enable threshold value is the threshold value for determining whether the LNA in the RF front-end module is enabled.
  • the signal strength is greater than the enable threshold value, it indicates that the signal to be received by the receiving channel is
  • the signal strength is less than the enable threshold and greater than the sensitivity limit, it means that the power of the signal to be received in the receiving channel is small, and the LNA needs to be enabled to perform gain processing on the signal.
  • the signal strength is less than the sensitivity limit, it means that the receiving channel will not receive the signal, and it can also mean that the opposite end does not send wireless signals, or the receiving channel cannot receive accurately due to the distance between the devices, so there is no need to Turn on the RF front-end module to enable.
  • the LNA when the predicted value of the received signal strength satisfies the short-circuit condition, the LNA is controlled to be short-circuited, so that the gain coefficient in the receiving path is zero; when the predicted value of the received signal strength satisfies the enabling condition, the LNA is controlled to be turned on, so that in the receiving path
  • the gain factor is the gain value of the LNA design.
  • the switch 123 may be controlled to be turned on or off through different control signals, so as to achieve the purpose of short-circuiting the LNA and turning on the LNA, respectively.
  • the receiving path of the RF front-end module 120 can implement multiple gain processing, for example, multiple LNAs are designed in the receiving path, one LNA corresponds to one gain coefficient, and each corresponds to an enable threshold value.
  • the gain coefficient of the receiving channel can be determined by comparing the predicted value of the received signal strength with each enabled threshold value, and then the LNA corresponding to the gain coefficient can be turned on.
  • the LNA in the RF front-end module in order to reflect the BT performance of short-range wireless communication equipment, when the predicted value of the received signal strength is less than the sensitivity limit, the LNA in the RF front-end module can be controlled forcibly
  • the working state is the enabled state to monitor the wireless signal to the maximum extent.
  • the method provided by the embodiment of the present application predicts the signal strength of the receiving time slot in the aperiodic receiving signal of the short-distance wireless communication device, so as to adjust the gain coefficient of the receiving channel in the radio frequency front-end module, which is different from the preset receiving method in the prior art. Compared with the non-zero gain of the channel, the non-zero gain time of the receiving channel is shortened, and the power consumption of the RF front-end module is reduced.
  • a short-range wireless communication device when a short-range wireless communication device periodically receives signals, after a period of signal interaction ends, there may be one or more receiving time slots in which the device has no signal to receive.
  • the current receive time slot is the first receive time slot of the transmission cycle
  • the low power consumption control method shown in Figure 2 is used to predict the received signal strength prediction value corresponding to the current receive time slot, the There is a large error between the predicted value and the actual value in the future.
  • the embodiments of the present application also provide a low power consumption control method applied in a scenario of periodic signal transmission.
  • a short-range wireless communication device periodically receiving wireless signals is taken as an example to exemplarily describe the low power consumption control method according to the embodiment of the present application in detail.
  • the method may include the following steps S201-S204.
  • Step S201 Obtain the actual value of the received signal strength corresponding to a plurality of historical receiving time slots before the current receiving time slot as a prediction sample, if the current receiving time slot is the initial receiving time slot of a transmission cycle, then execute step S202, otherwise execute step S202 S203.
  • the BT chip 110 may determine the length of the transmission cycle through the transmission protocol, and then determine whether the current reception time slot is the start reception time slot of a transmission cycle by setting a timer.
  • Step S202 Predict the received signal strength of the current receiving time slot according to the sensitivity limit value and the prediction sample.
  • the sensitivity limit value may be specifically set according to the sensitivity of the monitoring signal of the receiving device, which is not limited in this application.
  • the actual values of the received signal strength corresponding to the multiple historical receiving time slots are all greater than the sensitivity limit, it indicates that the short-range wireless device has monitored the signal in the multiple historical receiving time slots.
  • the actual value of the received signal strength corresponding to the receiving time slot is obtained by using an interpolation algorithm to obtain the predicted value of the received signal strength corresponding to the current receiving time slot.
  • there is an actual received signal strength value that is less than the sensitivity limit among the actual received signal strength values corresponding to the multiple historical receiving time slots it indicates that the short-range wireless device has not heard the signal in at least one of the multiple historical receiving time slots.
  • the signal selects the actual value of the received signal strength corresponding to the historical receiving time slot that is closest to the current receiving time slot in the actual value of the received signal strength that is greater than the sensitivity limit, as the received signal corresponding to the current receiving time slot Strength prediction.
  • the interpolation algorithm when using the interpolation algorithm to obtain the predicted value of the received signal strength corresponding to the current receiving time slot, it is necessary to first determine the change trend of the actual value of the received signal strength corresponding to the historical receiving time slot, and then use the interpolation algorithm to perform the interpolation operation to obtain the received signal.
  • Strength prediction Taking the actual values of the received signal strength corresponding to the three historical receiving time slots as an example, and in conjunction with the sequence diagram of the periodic interactive wireless service shown in FIG. The process of using an interpolation algorithm to obtain the predicted value in the scene.
  • the short-distance wireless device periodically receives signals.
  • slot6 is not the initial receiving time slot in tint0.
  • RSSI0, RSSI1 and RSSI2 performs an interpolation operation to obtain the received signal strength prediction value RSSI4 corresponding to the received time slot slot6.
  • step S203 the received signal strength of the current receiving time slot is predicted according to the predicted sample and the first condition, wherein the first condition is a prediction condition of the received signal strength of the initial receiving time slot.
  • the current receiving time slot is the initial receiving time slot of the transmission period, it is necessary to judge whether the predicted sample satisfies the first condition.
  • the actual value of the received signal strength corresponding to the second reference time slot in the historical receiving time slot that satisfies the first condition is used as the predicted value of the received signal strength, wherein the first condition is It may include that the actual value of the received signal strength corresponding to the historical reception time slot is greater than the sensitivity limit, and the second reference time slot is the last historical reception time slot after the historical reception time slots satisfying the first condition are arranged in time sequence. It can be understood that the actual value of the intensity of the second reference time slot is a value that is closest in time to the current receiving time slot and is valid.
  • the slot10 is the initial receiving time slot of tint1, when the actual value of the received signal strength of the historical receiving time slot is obtained.
  • RSSI1 corresponding to slot2 RSSI2 corresponding to slot4, and RSSI3 corresponding to slot6, when RSSI3 corresponding to slot6 satisfies the first condition, and slot6 is the closest in time to the current receiving time slot, slot6 can be used as the second reference time slot, Therefore, RSSI3 is selected as the received signal strength prediction value corresponding to the received time slot slot10.
  • the actual value of the received signal strength corresponding to the last receiving time slot after the multiple historical receiving time slots are arranged in time order is used as the received signal strength prediction of the current receiving time slot value.
  • Step S204 Adjust the gain coefficient of the receiving path in the radio frequency front-end module in the current receiving time slot according to the predicted value of the received signal strength.
  • the description of this step is the same as the description in step S103, and details are not repeated here.
  • the initial receiving time slot of the transmission period uses an actual strength value closest to it in time as the prediction of the initial receiving time slot value, so that the predicted value can satisfy the variation law of the signal in the transmission period to the greatest extent possible and reduce the prediction error between the predicted value and the actual value in the future.
  • the present application further provides a radio frequency front-end module 120 .
  • the RF front-end module 120 includes an LNA 122 and a control circuit.
  • the TX channel and RX channel on the left side of the RF front-end module 120 can be coupled with a short-range wireless chip (eg, the Bluetooth chip 110 ), and the right side can be coupled with the antenna 130 to transmit or receive signals.
  • a short-range wireless chip eg, the Bluetooth chip 110
  • the control circuit is used for controlling the gain coefficient of the LNA in the current receiving time slot according to the predicted value of the received signal strength. Exemplarily, for the specific process, refer to step S103 in the method embodiment shown in FIG. 2 and step S204 in the method embodiment shown in FIG. 5 , which will not be described here.
  • the predicted value of the received signal strength is determined according to the actual value of the received signal strength corresponding to multiple historical receiving time slots output by the LNA.
  • steps S101 and S102 in the method embodiment shown in FIG. 2 and steps S101 and S102 in FIG. 5 refer to steps S101 and S102 in the method embodiment shown in FIG. 2 and steps S101 and S102 in FIG. 5 .
  • Steps S201 to S203 in the method embodiment are shown, and are not described here again.
  • an embodiment of the present application further provides a low power consumption control apparatus, which can be applied to a short-distance wireless communication device.
  • the low power consumption control device is used to control the gain coefficient of the receiving path in the radio frequency front-end module, and aims to shorten the invalid gain time of the receiving path and reduce the power consumption of the radio frequency front-end module.
  • the function of the low power consumption control apparatus can be realized by a software system, also can be realized by a hardware device, and can also be realized by a combination of a software system and a hardware device.
  • the low power consumption control apparatus 800 may be logically divided into multiple modules, each module may have different functions, and the function of each module is implemented by the processor in the computing device reading and executing the instructions in the memory. As shown in FIG. 7 , the low power consumption control apparatus 800 may include an acquisition module 801 , a prediction module 802 and a control module 803 . It should be noted that, the embodiment of the present application only exemplarily divides the structure and functional modules of the low power consumption control device 800, but does not make any limitation on the specific division.
  • the obtaining module 801 is configured to obtain actual values of received signal strengths corresponding to multiple historical receiving time slots as prediction samples.
  • the actual value of the received signal strength is determined according to the signal monitored by the short-distance wireless communication device on the channel; exemplarily, the actual value of the received signal strength may be determined by using the aforementioned calculation method of the present application.
  • the prediction module 802 is configured to predict the strength value of the signal to be received in the next reception time slot according to the actual value of the received signal strength corresponding to the multiple historical reception time slots, and obtain the predicted value of the received signal strength corresponding to the next reception time slot. Since the strength of the wireless signal sent by the peer device changes slowly in the frame-level time (ms-level), there will be no sudden step change. Therefore, based on the actual value of the received signal strength in history, the strength of the wireless signal to be received in the next receiving time slot can be predicted, and the obtained predicted value can be used as an effective reference for the actual value.
  • the control module 803 is configured to adjust the gain coefficient of the receiving channel according to the predicted value of the received signal strength.
  • FIG. 9 is a schematic structural diagram of a short-range wireless communication device 900 provided by an embodiment of the present application.
  • the short-range wireless communication device 900 includes at least one processor 901 , a communication bus 902 , a memory 903 and at least one communication interface 904 .
  • the processor 901 may be a general-purpose central processing unit (central processing unit, CPU), an application-specific integrated circuit (application-specific integrated circuit, ASIC), a graphics processing unit (graphics processing unit, GPU) or any combination thereof.
  • the processor 901 may include one or more chips, and the processor 901 may include an AI accelerator, such as a neural network processor (neural processing unit, NPU).
  • NPU neural network processor
  • Communication bus 902 may include pathways for communicating information between various components of computing device 900 (eg, processor 901, memory 903, communication interface 904).
  • the memory 903 may be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM)) or other types of static storage devices that can store information and instructions.
  • Type of dynamic storage device it can also be electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, CD-ROM storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of being accessed by Any other medium accessed by the computer, but not limited to this.
  • the memory 903 may exist independently and is connected to the processor 901 through the communication bus 902 .
  • the memory 903 may also be integrated with the processor 901 .
  • the memory 903 can store computer instructions, and when the computer instructions stored in the memory 903 are executed by the processor 901, the model optimization method of the present application can be implemented.
  • the memory 903 may also store the data required by the processor in the process of executing the above method and the generated intermediate data and/or result data.
  • Communication interface 904 using any transceiver-like device, for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • RAN radio access network
  • WLAN wireless local area networks
  • the processor 901 may include one or more CPUs.
  • the short-range wireless communication device 900 may include multiple processors. Each of these processors can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium stores computer program codes, and when the computer program codes are executed by a computing device, the computing device executes the foregoing Method steps in a low power consumption control method embodiment.
  • the processor in the embodiments of the present application may be a central processing unit (central processing unit, CPU), and may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), application-specific integrated circuits (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic modules, transistor logic modules, hardware components or any combination thereof.
  • a general-purpose processor may be a microprocessor or any conventional processor.
  • the method steps in the embodiments of the present application may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions.
  • Software instructions can be composed of corresponding software modules, and software modules can be stored in random access memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory (programmable rom) , PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically erasable programmable read-only memory (electrically EPROM, EEPROM), registers, hard disks, removable hard disks, CD-ROMs or known in the art in any other form of storage medium.
  • An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and storage medium may reside in an ASIC.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted over a computer-readable storage medium.
  • the computer instructions can be sent from one website site, computer, server, or data center to another website site by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) , computer, server or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Quality & Reliability (AREA)
  • Probability & Statistics with Applications (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

本申请提供了一种低功耗控制方法及短距离无线通信芯片，属于短距离无线通信技术领域。该方法包括：获取多个历史接收时隙对应的接收信号强度实际值；根据多个历史接收时隙对应的接收信号强度实际值预测当前接收时隙对应的接收信号强度；根据接收信号强度预测值，调节射频前端模块中接收通路在当前接收时隙的增益系数，其中，射频前端模块与短距离无线通信芯片耦合。

Description

一种低功耗控制方法及短距离无线通信芯片 技术领域
本申请涉及短距离无线通信技术领域，尤其涉及一种低功耗控制方法及短距离无线通信芯片。
背景技术
随着无线通信技术的不断发展，市场上出现了不同种类的应用无线通信技术的设备。以蓝牙技术(bluetooth，BT)和蓝牙低功耗技术(bluetooth low energy，BLE)为例，应用BT或BLE技术的蓝牙耳机、蓝牙手环和蓝牙手表等具有蓝牙功能的设备越来越多。
具备BT技术或BLE技术的设备的产品形态丰富多样，不同的产品形态造成每个设备都设计有自身独特的天线，以接收外界的无线信号。为了提升用户体验，甚至一些设备采用了多天线设计。为了对抗设备中芯片口到天线口的链路衰减，大部分设备中一般均设计有射频前端模块，以提高设备接收无线信号的性能。
性能提升的同时，射频前端模块的应用也带来了设备功耗的提高。现有技术中接收设备对射频前端模块的接收通路的控制方法通常是采用自动增益控制(automatic gain control，AGC)。AGC是指，预先设置接收通路中的低噪声放大器(low noise amplifier，LNA)为使能状态，然后将发送设备的信号到达时的接收信号强度值与LNA的使能门限值进行比较，根据比较结果控制LNA在后续接收信号时的状态。因此，LNA在对端设备的信号到达之前的使能时段是无效使能时段，造成了功耗的浪费，无效使能时段越长，功耗损失越大，尤其对于耳机这类需要长时间连接发送设备的接收设备而言，AGC会给耳机带来更多不必要的功耗浪费。
发明内容
本申请实施例提供了一种低功耗控制方法及短距离无线通信芯片，通过对当前接收时隙对应的接收信号强度进行预测，然后根据预测值调节射频前端模块中接收通路的增益系数，到达控制LNA工作状态的目的，缩短了射频前端模块中接收通路的无效使能的时间，降低了射频前端模块的功耗。
第一方面，本申请实施例提供了一种低功耗控制方法，应用于短距离无线通信芯 片，该方法包括：获取多个历史接收时隙对应的接收信号强度实际值；根据多个历史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值；根据接收信号强度预测值，对耦合至短距离无线通信芯片的射频前端模块中的接收通路在当前接收时隙的增益系数进行控制。
上述技术方案中，短距离无线通信芯片对当前接收时隙待接收的信号强度值进行预测，然后根据预测值调节射频前端模块中接收通路在当前接收时隙的增益系数；相比现有技术预先将接收通路的增益系数调节至非零，待接收到信号再重新调节增益系数，本申请的方案缩短了接收通路处于非零增益的时间，从而减小了射频前端模块的功耗，延长了短距离无线通信设备的使用时间。
在一种可能的实施方式中，根据多个历史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值包括：当多个历史接收时隙对应的接收信号强度实际值均大于灵敏度限值时，基于多个历史接收时隙对应的接收信号强度实际值，利用插值算法获得接收信号强度预测值。
该方案中，当多个接收信号强度实际值均大于射频前端模块的灵敏度限值时，表明短距离无线通信芯片在历史接收时隙未间断地接收到了信号，即说明时短距离无线通信芯片在相应的历史接收时隙均接收到了信号，也说明信号的发送设备在相应的时隙均发送了信号，此时，可利用多个实际值连续变化的规律，采用插值算法对多个接收信号强度实际值进行插值获得的预测值与真实值更加接近，提高了接收信号强度预测的准确性，减小了预测误差。
在一种可能的实施方式中，根据多个历史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值还包括：当多个历史接收时隙对应的接收信号强度实际值中存在不大于灵敏度限值的接收信号强度实际值时，将多个历史接收时隙中第一参考时隙对应的接收信号强度实际值作为接收信号强度预测值；其中，第一参考时隙为将多个历史接收时隙按时间顺序排列后的最后一个历史接收时隙。
该方案中，当多个接收信号强度实际值中存在小于或等于灵敏度限值的值时，说明通信芯片在小于限值的时隙未接收到发送设备发送的信号，也有可能是发送设备未发送信号；此种情况下，由于多个实际值中的变化规律不连续，采用插值算法进行预测会增大预测值与实际值的误差，因此，此步骤中将多个接收信号强度实际值按时间顺序排列后的最后一个值作为当前的预测值，使得预测值与所述最后一个值的变化规律不间断。
在一种可能的实施方式中，根据多个历史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值还包括：当前接收时隙为传输周期的起始接收时隙、且多个历史接收时隙中存在满足第一条件的历史接收时隙时，将满足第一条件的历史接收时隙中的第二参考时隙对应的接收信号强度实际值作为接收信号强度预测值；其中，第一条件包括历史接收时隙对应的接收信号强度实际值大于灵敏度限值，第二参考时隙为将满足第一条件的历史接收时隙按时间顺序排列后的最后一个历史接收时隙。
在该方案中，第二参考时隙的信号强度实际值也就是与当前接收时隙在时间上最邻近的一个有效的值，有效指的是设备在该时隙接收到了信号，将其作为当前接收时隙的预测值，，可使预测值尽可能的满足信号的变化规律，最大程度的减小预测值与未来实际值的误差。
在一种可能的实施方式中，接收通路包括低噪声放大器；根据接收信号强度预测值，对耦合至短距离无线通信芯片的射频前端模块中的接收通路在当前接收时隙的增益系数进行控制包括：当接收信号强度预测值满足短路条件时，短路低噪声放大器，以使增益系数调节为零；其中，短路条件包括：接收信号强度预测值大于低噪声放大器的使能门限值、或者接收信号强度预测值小于灵敏度限值，使能门限值大于灵敏度限值。
在该方案中，接收信号强度预测值满足短路条件，表明低噪声放大器在当前接收时隙不需要对信号进行使能，因此对低噪声放大器进行短路控制，短路控制可以减小射频前端模块的功耗。
在一种可能的实施方式中，根据接收信号强度预测值，对耦合至短距离无线通信芯片的射频前端模块中的接收通路在当前接收时隙的增益系数进行控制还包括：当接收信号强度预测值满足射频前端模块的使能条件时，导通低噪声放大器，以使增益系数调节为低噪声放大器的增益值；其中，使能条件包括：接收信号强度预测值不大于使能门限值且不小于灵敏度限值。
在该方案中，接收信号强度预测值满足使能条件，表明在当前接收时隙需要低噪声放大器对信号进行使能，因此对其进行导通控制，对当前接收时隙的信号进行增益处理。
第二方面，本申请实施例提供了一种低功耗控制装置，该装置包括：获取模块，用于获取多个历史接收时隙对应的接收信号强度实际值；预测模块，用于根据多个历 史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值；控制模块，用于根据接收信号强度预测值调节耦合至短距离无线通信芯片的射频前端模块中的接收通路在当前接收时隙的增益系数。
在一种可能的实施方式中，预测模块具体用于：当多个历史接收时隙对应的接收信号强度实际值均大于灵敏度限值时，基于多个历史接收时隙对应的接收信号强度实际值，利用插值算法获得接收信号强度预测值。
在一种可能的实施方式中，预测模块还用于：当多个历史接收时隙对应的接收信号强度实际值中存在不大于灵敏度限值的接收信号强度实际值时，将多个历史接收时隙中第一参考时隙对应的接收信号强度实际值作为接收信号强度预测值，其中，第一参考时隙为将多个历史接收时隙按时间顺序排列后的最后一个历史接收时隙。
在一种可能的实施方式中，预测模块还用于：当前接收时隙为传输周期的起始接收时隙、且多个历史接收时隙中存在满足第一条件的历史接收时隙时，将满足第一条件的历史接收时隙中的第二参考时隙对应的接收信号强度实际值作为接收信号强度预测值；其中，第一条件包括历史接收时隙对应的接收信号强度实际值大于灵敏度限值，第二参考时隙为将满足第一条件的历史接收时隙按时间顺序排列后的最后一个历史接收时隙。
在一种可能的实施方式中，接收通路包括低噪声放大器；控制模块具体用于：当接收信号强度预测值满足短路条件时，短路低噪声放大器，以使增益系数调节为零；其中，短路条件包括：接收信号强度预测值大于低噪声放大器的使能门限值、或者接收信号强度预测值小于灵敏度限值，其中，使能门限值大于灵敏度限值。
在一种可能的实施方式中，控制模块还用于：当接收信号强度预测值满足低噪声放大器的使能条件时，导通低噪声放大器，以使增益系数调节为低噪声放大器的增益值；其中，使能条件包括：接收信号强度预测值不大于使能门限值且不小于灵敏度限值。
第三方面，本申请实施例提供了一种短距离无线通信芯片，应用于短距离无线通信设备，该短距离无线通信芯片包括：至少一个处理器以及存储器，至少一个处理器用于调用存储在存储器中的指令，以执行前述第一方面所提供的方法。
在一种可能的实施方式中，根据多个历史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值包括：当多个历史接收时隙对应的接收信号强度实际值均大于灵敏度限值时，基于多个历史接收时隙对应的接收信号强度实 际值，利用插值算法获得接收信号强度预测值。
在一种可能的实施方式中，根据多个历史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值还包括：当多个历史接收时隙对应的接收信号强度实际值中存在不大于灵敏度限值的接收信号强度实际值时，将多个历史接收时隙中第一参考时隙对应的接收信号强度实际值作为接收信号强度预测值；其中，第一参考时隙为将多个历史接收时隙按时间顺序排列后的最后一个历史接收时隙。
在一种可能的实施方式中，根据多个历史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值还包括：当前接收时隙为传输周期的起始接收时隙、且多个历史接收时隙中存在满足第一条件的历史接收时隙时，将满足第一条件的历史接收时隙中的第二参考时隙对应的接收信号强度实际值作为接收信号强度预测值；其中，所述第一条件包括所述历史接收时隙对应的接收信号强度实际值大于所述灵敏度限值，所述第二参考时隙为将满足所述第一条件的历史接收时隙按时间顺序排列后的最后一个历史接收时隙。
在一种可能的实施方式中，接收通路包括低噪声放大器；根据所述接收信号强度预测值，对耦合至短距离无线通信芯片的射频前端模块中的接收通路在当前接收时隙的增益系数进行控制包括：当接收信号强度预测值满足低噪声放大器的短路条件时，短路低噪声放大器，以使增益系数调节为零；其中，短路条件包括：接收信号强度预测值大于低噪声放大器的使能门限值、或者接收信号强度预测值小于灵敏度限值，使能门限值大于所述灵敏度限值。
在一种可能的实施方式中，根据接收信号强度预测值，对耦合至短距离无线通信芯片的射频前端模块中的接收通路在当前接收时隙的增益系数进行控制还包括：当接收信号强度预测值满足低噪声放大器的使能条件时，导通低噪声放大器，以使增益系数调节为低噪声放大器的增益值；其中，使能条件包括：接收信号强度预测值不大于使能门限值且不小于灵敏度限值。
第四方面，本申请实施例提供了一种射频前端模块，射频前端模块包括发射通路和接收通路，接收通路在当前接收时隙的状态根据当前接收时隙对应的接收信号强度预测值确定，其中，接收信号强度预测值根据多个历史接收时隙的对应的接收信号强度实际值获得。
在一种可能的实施方式中，控制电路具体用于：当多个历史接收时隙对应的接收信号强度实际值均大于灵敏度限值时，基于多个历史接收时隙对应的接收信号强度实 际值，利用插值算法获得接收信号强度预测值。
在一种可能的实施方式中，控制电路还用于：当多个历史接收时隙对应的接收信号强度实际值中存在不大于灵敏度限值的接收信号强度实际值时，将多个历史接收时隙中第一参考时隙对应的接收信号强度实际值作为接收信号强度预测值；其中，第一参考时隙为将多个历史接收时隙按时间顺序排列后的最后一个历史接收时隙。
在一种可能的实施方式中，控制电路还用于：当前接收时隙为传输周期的起始接收时隙、且多个历史接收时隙中存在满足第一条件的历史接收时隙时，将满足第一条件的历史接收时隙中的第二参考时隙对应的接收信号强度实际值作为接收信号强度预测值；其中，第一条件包括历史接收时隙对应的接收信号强度实际值大于灵敏度限值，第二参考时隙为将满足第一条件的历史接收时隙按时间顺序排列后的最后一个历史接收时隙。
在一种可能的实施方式中，控制电路还用于：当接收信号强度预测值满足低噪声放大器的短路条件时，短路低噪声放大器，以使增益系数调节为零；其中，短路条件包括：接收信号强度预测值大于低噪声放大器的使能门限值、或者接收信号强度预测值小于灵敏度限值，使能门限值大于所述灵敏度限值。
在一种可能的实施方式中，控制电路还用于：当接收信号强度预测值满足低噪声放大器的使能条件时，导通低噪声放大器，以使增益系数调节为低噪声放大器的增益值；其中，使能条件包括：接收信号强度预测值不大于使能门限值且不小于灵敏度限值。
第五方面，本申请实施例提供了一种短距离无线通信设备，短距离无线通信设备包括：如第二方面所提供的短距离无线通信芯片以及第四方面所提供的射频前端模块，其中，射频前端模块耦合至短距离无线通信芯片。
第六方面，本申请实施例提供了一种计算机可读存储介质，计算机可读存储介质存储有计算机程序代码，当计算机程序代码被短距离无线通信设备执行时，短距离无线通信设备执行上述第一方面所提供的方法。
附图说明
图1是本申请提供的一种短距离无线通信设备中BT系统的结构示意图；
图2是本申请实施例提供的一种非周期性业务中的低功耗控制方法的流程图；
图3是本申请实施例提供的一种非周期性连续交互无线业务的时序图；
图4是本申请实施例提供的一种非周期性间断交互无线业务的时序图；
图5是本申请实施例提供的一种周期性业务中的低功耗控制方法的流程图；
图6a是本申请实施例提供的一种周期性交互无线业务的时序图；
图6b是本申请实施例提供的一种周期性交互无线业务的时序图；
图7是本申请实施例提供的一种射频前端模块的结构示意图。
图8是是本申请实施例提供的一种低功耗控制装置的结构示意图；
图9是本申请实施例提供的一种计算设备的结构示意图。
具体实施方式
为了使本申请实施例的目的、技术方案和优点更加清楚，下面将结合附图，对本申请实施例中的技术方案进行描述。
在本申请实施例的描述中，“示例性的”、“例如”或者“举例来说”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”、“例如”或者“举例来说”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”、“例如”或者“举例来说”等词旨在以具体方式呈现相关概念。
在本申请实施例的描述中，术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，单独存在B，同时存在A和B这三种情况。另外，除非另有说明，术语“多个”的含义是指两个或两个以上。例如，多个系统是指两个或两个以上的系统，多个屏幕终端是指两个或两个以上的屏幕终端。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。术语“包括”、“包含”、“具有”及它们的变形都意味着“包括但不限于”，除非是以其他方式另外特别强调。
在介绍本申请提供的射频前端模块低功耗控制方案之前，先对射频前端模块、接收时隙、发送时隙、接收信号强度值(received signal strength indication，RSSI)进行介绍，便于理解本申请提供的技术方案和实施例。
射频前端模块，是短距离无线通信模块中的基础性零部件，位于短距离无线通信模块中天线和短距离无线通信芯片之间。射频前端模块通常包括：发射通路和接收通路，射频前端模块的这两个通路在无线通讯中扮演着重要的角色，即在发射信号的过程中将需要发送的二进制信号转换成高频率的无线信号，在接收信号的过程中将接收到的无线信号转换成二进制数字信号。射频前端模块通过其包括的功率放大器(PA)、 低噪声放大器(low noise amplifier，LNA)、滤波器(filters)、双工器(Duplexes)、调谐器(antenna tuner，AT)以及开关等模块实现信号转换。
接收时隙，是指接收设备接收无线信号的时段；发送时隙，是发送设备发送无线信号的时段。例如，在一种传输链路中，接收设备在接收到信号的数据包Poll后，会向发送设备反馈一个Null包，以表示无线设备已经接收到发送设备发送的无线信号。因此，接收时隙和发送时隙是本申请用来区分设备在连续时间上是接收信号的状态还是发送信号的状态。对于前述的传输链路中的接收设备而言，接收时隙和发送时隙在时间上是连续的，且两个接收时隙在时间上是间隔排列的。
接收信号强度值RSSI，是指示接收设备接收的信号的强度，可以根据接收到的信号的功率计算获得。计算RSSI时，对接收时隙的接收信号的功率值取对数，获得接收信号强度实际值，例如，当RSSI的计量单位取为dBm时，如果接收到的信号的功率为1mw，RSSI(1mW)＝10lg(1mW/1mW)＝0dBm，同样地，如果接收到的信号的功率为40W，RSSI(40W)＝10lg(40W/1mw)＝10lg(40000)＝10lg4+10lg10+10lg1000＝46dBm。RSSI一方面可以用于判断链路传输链路的连接质量，另一方面可以用来判定射频前端模块是否对接收信号进行增益处理。
下面以短距离无线通信技术中蓝牙技术为例，对本申请的方案进行详细说明。需要说明的是，本申请的技术方案并不局限于蓝牙技术，还可以应用于其它短距离无线通信技术，或者蓝牙标准的替代技术等。
在两个短距离无线通信设备进行无线业务传输的场景中，两个短距离无线通信设备之间通过各自的BT系统连接，并传输短距离无线信号。
示例性的，上述的短距离无线通信设备可以是智能手机、平板电脑、手提式电脑、台式电脑、智能手表、智能手环、无线耳机等具有短距离无线通信功能的设备中的任意一种，本申请不做具体限定。
示例性的，上述两个短距离无线通信设备之间可以交互传输无线信号，也可以是单向传输无线信号；交互传输无线信号即两个短距离无线通信设备中的接收设备接收到发送设备发送的信号时会向发送设备发送一个反馈信号。
图1是本申请实施例提供的一种BT系统的结构示意图，该BT系统应用在上述的短距离无线通信设备中。
请参照图2，BT系统100包括BT芯片110、射频前端模块120和天线130。
示例性的，射频前端模块120耦合至天线130，射频前端模块120可从天线接收 信号或者通过天线发送信号。射频前端模块120包括但不限于：PA121、LNA121、旁置电路123。需要说明的是，射频前端模块120中的模块类型和数量仅为示意性举例。在其他实施例中，射频前端模块120中可以包括更多的模块，本申请不做限定。
示例性的，功率放大器121设置于TX(transport，发送)通路(以下简称TX)上，用于对BT芯片通过发送电路输入的信号进行相应处理，并将处理后的信号输出至天线130。示例性的，LNA121设置于RX(receive，接收)通路(以下简称RX)上，用于对从天线130接收到的信号进行相应处理，并将处理后的信号输出至BT芯片110。旁置电路123耦合至LNA121的两端，用于对LNA121进行控制。
示例性的，BT芯片110可以包括：
BT芯片120耦合至射频前端模块120，BT芯片120可通过射频前端模块120发送信号；BT芯片120可通过射频前端模块120接收信号。示例性的，BT芯片120可通过控制信号切换射频前端模块120中的TX和RX，以及调节RX中LNA122的工作状态。
以LNA122有两种工作状态(使能状态和短路状态Bypass)为例，其中，LNA122为使能状态时，LNA122对天线接收的信号进行增益处理；LNA122为短路状态时，LNA122不对天线接收的信号进行增益处理，相当于零增益。示例性的，当不需要对天线接收的信号进行增益处理时，利用第一控制信号控制旁路电路123导通以短路LNA122，使LNA122的工作状态为短路状态，进而使得接收通路的增益系数为零；相反的，当需要对天线接收的信号进行增益处理时，利用第二控制信号控制旁路电路123闭合以导通LNA122，使LNA122的工作状态为使能状态，此时，接收通路的增益系数为LNA122的增益值。
可选地，在其他实施例中，可以根据不同应用场景的不同需求，对射频前端模块的接收通路设置多级的增益系数，从而对天线接收的信号进行多级增益处理。例如，接收通路可以实现0～3档四种增益处理时，0档表示零增益处理，1～3档表示三种不同级别的非零增益处理；四档增益处理分别对应不同的增益系数和使能门限值，当天线接收的信号的RSSI满足相应档位的使能门限值，即调节接收通路的增益系数为相应档位对应的增益系数。在一种可能的实施方式中，可在接收通路中设置多个LNA，以实现接收通路的多级增益处理功能，即在确定接收通路的增益档位时，导通相应档位对应的LNA，使得该LNA对信号进行增益处理，其中，零增益档位时，短路接收通路中所有的LNA。
在一个实际的应用场景中，两个短距离无线通信设备之间可以周期性的传输短距离无线业务，也可能是非周期性的传输短距离无线业务。与此对应的，接收设备接收的短距离无线信号可能是周期性的短距离无线信号，也可能是非周期性的短距离无线信号。一般地，在两个设备传输信号的过程中，需根据发送设备发送的信号的RSSI对射频前端模块中RX进行控制。现有技术中，预先将RX中LNA122控制为使能状态；然后根据接收设备在信道监听的RSSI值判断射频前端模块的接收通路是否需要对应信号进行增益处理，具体为，当信号功率大于预设值时，射频前端模块关闭，信号功率小于预设值时，射频前端模块保持开启并使能。这种方法使得射频前端模块存在较大的无效开启时间，即预先开启至开始接收到信号之间的时间，这无疑增加了接收设备的功耗，时间越长，接收设备的功耗损失越大。
基于上述分析，短路状态本申请实施例提供一种射频前端模块的低功耗控制方法，该方法应用于短距离无线通信芯片中，短距离无线通信芯片应用于短距离无线通信设备。本实施例中，短距离无线通信芯片以前述的BT芯片110为例。
下面以短距离无线通信设备非周期性接收无线信号为例，结合附图2，示例性的对本申请实施例射频前端模块的低功耗控制的方法进行详细描述。
如图2所示，该方法可以包括如下的步骤S101-步骤S103。
步骤S101.获取当前接收时隙之前多个历史接收时隙对应的接收信号强度实际值作为预测样本。
本实施例中，当前接收时隙与多个历史接收时隙在时间上是连续的，其中，当前接收时隙指的是短距离无线通信设备还未接收信号的时隙。可以理解的，本申请实施例不对历史接收时隙的个数进行限定。历史的接收信号强度实际值是用于预测当前接收时隙对应的接收信号强度，获得的预测值表征BT装置在当前接收时隙将要接收的信号的强度。
步骤S102.利用预测样本预测当前接收时隙对应的接收信号强度。
本实施例中，根据多个历史接收时隙对应的接收信号强度实际值获得当前接收时隙对应的接收信号强度预测值时，需先根据获得的接收信号强度实际值和预设的灵敏度限值进行比较，以判断短距离无线通信设备在多个历史接收时隙中是否在传输信道中监听到了短距离无线信号，从而确定是否可以利用多个接收信号强度实际值的变化规律预测当前接收时隙的接收信号强度。其中，灵敏度限值可根据短距离无线通信设备监听信号的灵敏度进行设置。
在一种可能的情况中，当多个历史接收时隙对应的接收信号强度实际值均大于灵敏度限值时，表明短距离无线通信设备在多个历史接收时隙均监听到了信号，此时，可基于多个历史接收时隙对应的接收信号强度实际值，利用插值算法获得其中的变化规律，从而获得当前接收时隙对应的接收信号强度预测值。可选地，插值算法可以是最邻近插值、双线性二次插值和三次插值中的一种，还可以是其他可以实现接收信号强度预测功能的插值算法。其中，在利用插值算法获得当前接收时隙对应的接收信号强度预测值时，首先确定历史接收时隙对应的接收信号强度实际值的变化趋势，然后再利用插值算法进行插值运算，获得当前接收时隙对应的接收信号强度预测值。
下面结合图3示出的非周期性连续交互短距离无线业务的时序图，说明本实施例上述的一种情况的预测过程。
如图3所示，当时隙slot6为当前接收时隙时，slot6之前的三个接收时隙的接收信号强度值作为预测样本。其中，当第一个接收时隙slot0对应的接收信号强度实际值RSSI0、第二个接收时隙slot2对应的接收信号强度实际值RSSI1和第三个接收时隙slot4对应的接收信号强度实际值RSSI2均大于灵敏度限值时，说明短距离无线通信设备在slot0、slot2和slot4均监听到了无线信号，此时，可利用插值算法对RSSI0、RSSI1和RSSI2进行插值运算，获得第四个接收时隙slot6对应的接收信号强度预测值RSSI3。比如，当RSSI0>RSSI1>RSSI2时，通过插值算法可以预测到slot6对应的RSSI3，且RSSI3将小于RSSI2；当RSSI0<RSSI1<RSSI2时，则可以通过插值算法预测到slot6对应的RSSI3，且RSSI3将大于RSSI2。在一种可能的应用场景中，可通过各个时隙的RSSI值判断接收设备和发送设备之间的距离变化，例如，RSSI0>RSSI1>RSSI2时，说明短距离无线通信设备和发送信号的设备之间的距离由近变远，RSSI0<RSSI1<RSSI2时，说明短距离无线通信设备和发送信号的设备之间的距离由远变近。
在另一种可能的情况中，当多个历史接收时隙对应的接收信号强度实际值中存在小于灵敏度限值的接收信号强度实际值，表明短距离无线通信设备在该多个历史接收时隙中至少一个时隙中未监听到信号，此时，多个接收信号强度实际值中的变化规律不连续，无法通过插值算法进行预测。因此，在大于灵敏度限值的接收信号强度实际值中选择一个接收时隙作为参考时隙，将其对应的接收信号强度实际值作为当前接收时隙对应的接收信号强度预测值，其中参考时隙可以是将多个历史接收时隙按时间顺序排列后的最后一个接收时隙，也就是说参考时隙是在时间上与当前接收时隙最近的 一个时隙。
下面结合图4示出的非周期性间断交互短距离无线业务的时序图，说明本实施例上述的另一种情况的预测过程。
如图4所示，同样以slot6为当前接收时隙，slot0、slot2、slot4三个时隙的接收信号强度值作为预测样本。当接收时隙slot0对应的接收信号强度实际值RSSI0大于灵敏度限值、接收时隙slot2对应的接收信号强度实际值RSSI1和接收时隙slot4对应的接收信号强度实际值RSSI2均不大于灵敏度限值时，说明短距离无线设备在slot2和slot4没有监听到信号，此时，RSSI0、RSSI1和RSSI2之间不存在一定的变化规律，无法通过插值进行预测，因此，直接将slot4对应的RSSI2作为slot6对应的接收信号强度预测值RSSI3。
步骤S103.根据当前接收时隙对应的接收信号强度预测值，调节射频前端模块中的接收通路在当前接收时隙的增益系数。
本实施例中，将获得接收信号强度预测值与预设的接收通路的工作条件进行比较分析，进行确定接收通路在当前接收时隙的增益系数及控制策略。以接收通路具有零增益处理和非零增益处理两种情形为例，两种情形通过控制RX中的LNA的导通与否实现。
进一步地，可对应两种情形设置短路条件和使能条件。其中，短路条件下，接收通路的增益系数为零，不对信号进行增益处理；使能条件下，接收通路的增益系数不为零，对信号进行增益处理，此时的增益系数为接收通路中LNA的增益值。
可选地，短路条件包括：接收信号强度预测值大于使能门限值、或接收信号强度预测值小于灵敏度限值；使能条件包括：接收信号强度预测值介于使能门限值和灵敏度限值之间。其中，使能门限值大于灵敏度限值，使能门限值是确定射频前端模块中LNA是否使能的门限值，当信号强度大于使能门限值时，说明接收通路待接收的信号的功率较大，不需要LNA使能；当信号强度小于使能门限值且大于灵敏度限值时，说明接收通路待接收的信号的功率较小，需要LNA使能，以对信号进行增益处理；当信号强度小于灵敏度限值时，说明接收通路不会接收到信号，同时也可以说明对端未发送无线信号，或者由于设备之间的距离较远，导致接收通路无法准确接收，也就无需开启射频前端模块来使能。
可选地，当接收信号强度预测值满足短路条件时，控制LNA短路，使得接收通路中的增益系数为零；当接收信号强度预测值满足使能条件时，控制LNA导通，使得接 收通路中的增益系数为LNA设计的增益值。示例性的，如图1所示，可以通过不同的控制信号控制开关123闭合或断开，分别实现短路LNA导通LNA的目的。
可选地，如果射频前端模块120的接收通路可以实现多种增益处理，比如在接收通路中设计有多个LNA，一个LNA对应一种增益系数，并且分别对应一个使能门限值。此场景下，当接收信号强度预测值满足使能条件时，可以通过比较接收信号强度预测值与各个使能门限值来确定接收通路的增益系数，然后导通增益系数对应的LNA。
在一个可能的场景中，如短距离无线通信设备的硬件性能测试场景中，为了体现短距离无线通信设备的BT性能，当接收信号强度预测值小于灵敏度限值，可以强制控制射频前端模块中LNA的工作状态为使能状态，以最大限度的监听无线信号。
本申请实施例提供的方法，在短距离无线通信设备非周期性接收信号中对接收时隙的信号强度进行预测，从而调节射频前端模块中接收通路的增益系数，与现有技术中预先设置接收通路为非零增益相比，缩短了接收通路的非零增益时间，减小了射频前端模块的功耗。
在一个可能的应用场景中，当短距离无线通信设备周期性接收信号时，在一个周期的信号交互结束之后，可能存在一个或多个接收时隙设备没有信号可接收的时隙。此种情况下，如果当前接收时隙为传输周期的第一个接收时隙，若采用图2所示的低功耗控制方法对当前接收时隙对应的接收信号强度预测值进行预测，会使预测值与未来的实际值存在较大的误差。
为此，本申请实施例还提供了一种应用在周期性传输信号场景中的低功耗控制方法。下面结合附图5，以短距离无线通信设备周期性接收无线信号为例，示例性的对本申请实施例低功耗控制方法进行详细描述。
如图5所示，该方法可以包括如下的步骤S201-步骤S204。
步骤S201.获取当前接收时隙之前多个历史接收时隙对应的接收信号强度实际值作为预测样本，若当前接收时隙为一个传输周期的起始接收时隙，则执行步骤S202，否则执行步骤S203。
本实施例中，BT芯片110可通过传输协议确定传输周期的长度，然后通过设置计时器的方法确定当前接收时隙是否为一个传输周期的起始接收时隙。
步骤S202.根据灵敏度限值和预测样本预测当前接收时隙的接收信号强度。
本实施例中，在当前接收时隙不是传输周期的起始接收时隙的情况下，比较多个历史接收时隙对应的接收信号强度实际值和灵敏度限值的大小，判断短距离无线设备 是否在传输信道中监听到了信号。其中，在不同的应用场景中，灵敏度限值可根据接收设备监听信号的灵敏度进行具体的设置，本申请不做限定。
示例性的，当多个历史接收时隙对应的接收信号强度实际值均大于灵敏度限值时，表明短距离无线设备在多个历史接收时隙均监听到了信号，此时，可基于多个历史接收时隙对应的接收信号强度实际值，利用插值算法获得当前接收时隙对应的接收信号强度预测值。当多个历史接收时隙对应的接收信号强度实际值中存在小于灵敏度限值的接收信号强度实际值，表明短距离无线设备在该多个历史接收时隙中的至少一个时隙中未监听到信号，此时，在大于灵敏度限值的接收信号强度实际值中选择与当前接收时隙在时间上最邻近的历史接收时隙对应的接收信号强度实际值，作为当前接收时隙对应的接收信号强度预测值。
具体的，利用插值算法获得当前接收时隙对应的接收信号强度预测值时，需先确定历史接收时隙对应的接收信号强度实际值的变化趋势，然后再利用插值算法进行插值运算，获得接收信号强度预测值。下面以3个历史接收时隙对应的接收信号强度实际值为例，结合图6a示出的周期性交互无线业务的时序图，示例性的说明本实施例在短距离无线设备周期性接收无线信号的场景中利用插值算法获得预测值的过程。
如图6a所示，短距离无线设备周期性接收信号，以当前接收时隙为传输周期tint0中的接收时隙slot6为例，slot6非tint0中的起始接收时隙，则获取的预测样本中包括接收时隙slot0对应的接收信号强度实际值RSSI0、接收时隙slot2对应的接收信号强度实际值RSSI1和接收时隙slot4对应的接收信号强度实际值RSSI2，此情况下，可对RSSI0、RSSI1和RSSI2进行插值运算，获得接收时隙slot6对应的接收信号强度预测值RSSI4。
步骤S203中，根据预测样本和第一条件预测当前接收时隙的接收信号强度，其中，第一条件是起始接收时隙的接收信号强度的预测条件。
本实施例中，由于当前接收时隙为传输周期的起始接收时隙，需判断预测样本是否满足第一条件。
当预测样本中存在满足预测样本的接收时隙时，将满足第一条件的历史接收时隙中的第二参考时隙对应的接收信号强度实际值作为接收信号强度预测值，其中，第一条件可以包括历史接收时隙对应的接收信号强度实际值大于灵敏度限值，第二参考时隙为将满足第一条件的历史接收时隙按时间顺序排列后的最后一个历史接收时隙。可以理解的，第二参考时隙的强度实际值是一个在时间上距离当前接收时隙最近且有效 的值。示例性的，如图6b所示，若当前接收时隙为传输周期tint1中的接收时隙slot10时，slot10为tint1的起始接收时隙，当获取的历史接收时隙的接收信号强度实际值为slot2对应的RSSI1、slot4对应的RSSI2和slot6对应的RSSI3时，当slot6对应的RSSI3满足第一条件时，且slot6与当前接收时隙在时间上最邻近，slot6可作为第二参考时隙，因此，选择RSSI3作为接收时隙slot10对应的接收信号强度预测值。
当预测样本不存在满足第一条件的接收时隙时，将多个历史接收时隙按时间顺序排列后的最后一个接收时隙对应的接收信号强度实际值作为当前接收时隙的接收信号强度预测值。
步骤S204.根据接收信号强度预测值调节射频前端模块中的接收通路在所述当前接收时隙的增益系数。本实施例中，此步骤的说明同步骤S103中的介绍，此处不再赘述。
本申请实施例所提供的方法，在的距离无线设备周期性接收无线信号时，传输周期的起始接收时隙，将与其在时间上最邻近的一个强度实际值作为起始接收时隙的预测值，使预测值最大可能的满足信号在传输周期中的变化规律减小了预测值与未来实际值的预测误差。
基于上述图2和图5所示的低功耗控制方法实施例，本申请还提供一种射频前端模块120。如图7所示，该射频前端模块120包括LNA122，以及控制电路。射频前端模块120左侧的TX通路和RX通路可与短距离无线芯片耦合(例如：蓝牙芯片110)，右侧可与天线130耦合，以发射信号或接收信号。
控制电路用于根据接收信号强度预测值，对LNA在当前接收时隙的增益系数进行控制。示例性的，具体过程参见前述图2所示方法实施例中的步骤S103和图5所示方法实施例中的步骤S204，此处不再介绍。
其中，接收信号强度预测值是根据LNA输出的多个历史接收时隙对应的接收信号强度实际值确定的，具体过程参见前述图2所示方法实施例中的步骤S101和S102、以及图5所示方法实施例中的步骤S201～S203，此处不再介绍。
基于上述图2和图5所示的低功耗控制方法实施例，本申请实施例还提供一种低功耗控制装置，可应用于短距离无线通信设备中。该低功耗控制装置用于对射频前端模块中接收通路的增益系数进行控制，旨在缩短接收通路的无效增益时间，降低射频前端模块的功耗。低功耗控制装置的功能可以由软件系统实现，也可以由硬件设备实现，还可以由软件系统和硬件设备结合来实现。
当低功耗控制装置为软件装置时，参见图8示出的一种低功耗控制装置80800。低功耗控制装置800可以在逻辑上分成多个模块，每个模块可以具有不同的功能，每个模块的功能由计算设备中的处理器读取并执行存储器中的指令来实现。如图7所示，低功耗控制装置800可以包括获取模块801、预测模块802和控制模块803。需要说明的是，本申请实施例仅对低功耗控制装置800的结构和功能模块进行示例性划分，但是并不对其具体划分做任何限定。
本实施例中，获取模块801，用于获取多个历史接收时隙对应的接收信号强度实际值作为预测样本。其中，接收信号强度实际值根据短距离无线通信设备在信道监听的信号确定；示例性的，可采用本申请前述的计算方法确定接收信号强度实际值。
预测模块802，用于根据多个历史接收时隙对应的接收信号强度实际值对下一个接收时隙的待接收信号的强度值进行预测，获得下一个接收时隙对应的接收信号强度预测值。由于对端设备发送的无线信号的强度在帧级别时间(ms级)中变化是缓慢的，不会出现突然阶跃性的变化。因此，可基于历史的接收信号强度实际值，对下个接收时隙待接收的无线信号的强度进行预测，获得的预测值可以做为实际值的有效参考。
控制模块803，用于根据接收信号强度预测值调节接收通路的增益系数。
上述三个功能模块的具体执行过程参见发明内容和前述方法实施例中描述，此处不再赘述。
当低功耗控制装置为硬件设备时，该低功耗控制装置可以是前述的短距离无线通信设备。图9是本申请实施例提供的一种短距离无线通信设备900的结构示意图。该短距离无线通信设备900包括至少一个处理器901，通信总线902，存储器903以及至少一个通信接口904。
处理器901可以是一个通用中央处理器(central processing unit，CPU)，特定应用集成电路(application-specific integrated circuit，ASIC)，图形处理器(graphics processing unit，GPU)或其任意组合。处理器901可以包括一个或多个芯片，处理器901可以包括AI加速器，例如：神经网络处理器(neural processing unit，NPU)。
通信总线902可包括在计算设备900各个部件(例如，处理器901、存储器903、通信接口904)之间传送信息的通路。
存储器903可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其它类型的静态存储设备，随机存取存储器(random access memory，RAM))或者可存储信息和指令的其它类型的动态存储设备，也可以是电可擦可编程只读存储 器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其它光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其它磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其它介质，但不限于此。存储器903可以是独立存在，通过通信总线902与处理器901相连接。存储器903也可以和处理器901集成在一起。存储器903可以存储计算机指令，当存储器903中存储的计算机指令被处理器901执行时，可以实现本申请的模型优化方法。另外，存储器903中还可以存储有处理器在执行上述方法的过程中所需的数据以及所产生的中间数据和/或结果数据。
通信接口904，使用任何收发器一类的装置，用于与其它设备或通信网络通信，如以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。
在一种可能的实施方式中，处理器901可以包括一个或多个CPU。
在一种可能的实施方式中，短距离无线通信设备900可以包括多个处理器。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
基于上述的低功耗控制方法实施例，本申请实施例还提供一种计算机可读存储介质，计算机可读存储介质存储有计算机程序代码，当计算机程序代码被计算设备执行时，计算设备执行上述低功耗控制方法实施例中的方法步骤。
可以理解的是，本申请的实施例中的处理器可以是中央处理模块(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑模块、晶体管逻辑模块，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
本申请的实施例中的方法步骤可以通过硬件的方式来实现，也可以由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(random access memory，RAM)、闪存、只读存储器(read-only memory，ROM)、可编程只读存储器(programmable rom，PROM)、可擦除可编程只读存储 器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者通过所述计算机可读存储介质进行传输。所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。

Claims (20)

  1. 一种低功耗控制方法，其特征在于，所述方法应用于短距离无线通信芯片，所述方法包括：
    获取多个历史接收时隙对应的接收信号强度实际值；
    根据所述多个历史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值；
    根据所述接收信号强度预测值，对耦合至所述短距离无线通信芯片的射频前端模块中的接收通路在所述当前接收时隙的增益系数进行控制。
  2. 根据权利要求1所述的方法，其特征在于，所述根据所述多个历史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值包括：
    当所述多个历史接收时隙对应的接收信号强度实际值均大于灵敏度限值时，基于所述多个历史接收时隙对应的接收信号强度实际值，利用插值算法获得所述接收信号强度预测值。
  3. 根据权利要求2所述的方法，其特征在于，所述根据所述多个历史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值还包括：
    当所述多个历史接收时隙对应的接收信号强度实际值中存在不大于所述灵敏度限值的接收信号强度实际值时，将所述多个历史接收时隙中第一参考时隙对应的接收信号强度实际值作为所述接收信号强度预测值；其中，所述第一参考时隙为将所述多个历史接收时隙按时间顺序排列后的最后一个历史接收时隙。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述根据所述多个历史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值还包括：
    当所述当前接收时隙为传输周期的起始接收时隙、且所述多个历史接收时隙中存在满足第一条件的历史接收时隙时，将满足所述第一条件的历史接收时隙中的第二参考时隙对应的接收信号强度实际值作为所述接收信号强度预测值；
    其中，所述第一条件包括所述历史接收时隙对应的接收信号强度实际值大于所述灵敏度限值，所述第二参考时隙为将满足所述第一条件的历史接收时隙按时间顺序排列后的最后一个历史接收时隙。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述接收通路包括低噪声放大器；
    所述根据所述接收信号强度预测值，对耦合至所述短距离无线通信芯片的射频前端模块中的接收通路在所述当前接收时隙的增益系数进行控制包括：
    当所述接收信号强度预测值满足所述低噪声放大器的短路条件时，短路所述低噪声放大器，以使所述增益系数调节为零；
    其中，所述短路条件包括：所述接收信号强度预测值大于所述低噪声放大器的使能门限值、或者所述接收信号强度预测值小于所述灵敏度限值，所述使能门限值大于所述灵敏度限值。
  6. 根据权利要求5所述的方法，其特征在于，所述根据所述接收信号强度预测值，对耦合至所述短距离无线通信芯片的射频前端模块中的接收通路在所述当前接收时隙的增益系数进行控制还包括：
    当所述接收信号强度预测值满足所述低噪声放大器的使能条件时，导通所述低噪声放大器，以使所述增益系数调节为所述低噪声放大器的增益值；
    其中，所述使能条件包括：所述接收信号强度预测值不大于所述使能门限值且不小于所述灵敏度限值。
  7. 一种短距离无线通信芯片，其特征在于，包括：至少一个处理器以及存储器，所述至少一个处理器用于调用存储在所述存储器中的指令，以执行如下步骤：
    获取多个历史接收时隙对应的接收信号强度实际值；
    根据所述多个历史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值；
    根据所述接收信号强度预测值，对耦合至所述短距离无线通信芯片的射频前端模块中的接收通路在所述当前接收时隙的增益系数进行控制。
  8. 根据权利要求7所述的短距离无线通信芯片，其特征在于，所述根据所述多个历史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值包括：
    当所述多个历史接收时隙对应的接收信号强度实际值均大于灵敏度限值时，基于所述多个历史接收时隙对应的接收信号强度实际值，利用插值算法获得所述接收信号强度预测值。
  9. 根据权利要求8所述的短距离无线通信芯片，其特征在于，所述根据所述多个历史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值还包括：
    当所述多个历史接收时隙对应的接收信号强度实际值中存在不大于所述灵敏度限值的接收信号强度实际值时，将所述多个历史接收时隙中第一参考时隙对应的接收信号强度实际值作为所述接收信号强度预测值；
    其中，所述第一参考时隙为将所述多个历史接收时隙按时间顺序排列后的最后一个历史接收时隙。
  10. 根据权利要求7-9任一项所述的短距离无线通信芯片，其特征在于，所述根据所述多个历史接收时隙对应的接收信号强度实际值，确定当前接收时隙对应的接收信号强度预测值还包括：
    当所述当前接收时隙为传输周期的起始接收时隙、且所述多个历史接收时隙中存在满足第一条件的历史接收时隙时，将满足所述第一条件的历史接收时隙中的第二参考时隙对应的接收信号强度实际值作为所述接收信号强度预测值；
    其中，所述第一条件包括所述历史接收时隙对应的接收信号强度实际值大于所述灵敏度限值，所述第二参考时隙为将满足所述第一条件的历史接收时隙按时间顺序排列后的最后一个历史接收时隙。
  11. 根据权利要求7-10任一项所述的短距离无线通信芯片，其特征在于，所述接收通路包括低噪声放大器；
    所述根据所述接收信号强度预测值，对耦合至所述短距离无线通信芯片的射频前端模块中的接收通路在所述当前接收时隙的增益系数进行控制包括：
    当所述接收信号强度预测值满足所述低噪声放大器的短路条件时，短路所述低噪声放大器，以使所述增益系数调节为零；
    其中，所述短路条件包括：所述接收信号强度预测值大于所述低噪声放大器的使能门限值、或者所述接收信号强度预测值小于所述灵敏度限值，所述使能门限值大于所述灵敏度限值。
  12. 根据权利要求11所述的短距离无线通信芯片，其特征在于，所述根据所述接收信号强度预测值，对耦合至所述短距离无线通信芯片的射频前端模块中的接收通路在所述当前接收时隙的增益系数进行控制还包括：
    当所述接收信号强度预测值满足所述低噪声放大器的使能条件时，导通所述低噪声放大器，以使所述增益系数调节为所述低噪声放大器的增益值；
    其中，所述使能条件包括：所述接收信号强度预测值不大于所述使能门限值且不小于所述灵敏度限值。
  13. 一种射频前端模块，其特征在于，所述射频前端模块包括：低噪声放大器LNA，以及控制电路，所述控制电路用于根据接收信号强度预测值，对所述LNA在当前接收时隙的增益系数进行控制，其中，所述接收信号强度预测值是根据所述LNA输出的多个历史接收时隙对应的接收信号强度实际值确定的。
  14. 根据权利要求13所述的射频前端模块，其特征在于，所述控制电路具体用于：
    当所述多个历史接收时隙对应的接收信号强度实际值均大于灵敏度限值时，基于所述多个历史接收时隙对应的接收信号强度实际值，利用插值算法获得所述接收信号强度预测值。
  15. 根据权利要求14所述的射频前端模块，其特征在于，所述控制电路还用于：
    当所述多个历史接收时隙对应的接收信号强度实际值中存在不大于所述灵敏度限值的接收信号强度实际值时，将所述多个历史接收时隙中第一参考时隙对应的接收信号强度实际值作为所述接收信号强度预测值；
    其中，所述第一参考时隙为将所述多个历史接收时隙按时间顺序排列后的最后一个历史接收时隙。
  16. 根据权利要求13-15任一项所述的射频前端模块，其特征在于，所述控制电路还用于：当所述当前接收时隙为传输周期的起始接收时隙、且所述多个历史接收时隙中存在满足第一条件的历史接收时隙时，将满足所述第一条件的历史接收时隙中的第二参考时隙对应的接收信号强度实际值作为所述接收信号强度预测值；
    其中，所述第一条件包括所述历史接收时隙对应的接收信号强度实际值大于所述灵敏度限值，所述第二参考时隙为将满足所述第一条件的历史接收时隙按时间顺序排列后的最后一个历史接收时隙。
  17. 根据权利要求13-16任一项所述的射频前端模块，其特征在于，所述控制电路还用于：
    当所述接收信号强度预测值满足所述低噪声放大器的短路条件时，短路所述低噪声放大器，以使所述增益系数调节为零；
    其中，所述短路条件包括：所述接收信号强度预测值大于所述低噪声放大器的使能门限值、或者所述接收信号强度预测值小于所述灵敏度限值，所述使能门限值大于所述灵敏度限值。
  18. 根据权利要求17所述的射频前端模块，其特征在于，所述控制电路还用于：
    当所述接收信号强度预测值满足所述低噪声放大器的使能条件时，导通所述低噪 声放大器，以使所述增益系数调节为所述低噪声放大器的增益值；
    其中，所述使能条件包括：所述接收信号强度预测值不大于所述使能门限值且不小于所述灵敏度限值。
  19. 一种短距离无线通信设备，其特征在于，所述短距离无线通信设备包括：如权利要求7-12任一项所述的短距离无线通信芯片以及如权利要求13-18任一项所述的射频前端模块，其中，所述射频前端模块耦合至所述短距离无线通信芯片。
  20. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序代码，当所述计算机程序代码被短距离无线通信设备执行时，所述短距离无线通信设备执行上述权利要求1-6中任一项所述的方法。
PCT/CN2021/083581 2021-03-29 2021-03-29 一种低功耗控制方法及短距离无线通信芯片 WO2022204870A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/CN2021/083581 WO2022204870A1 (zh) 2021-03-29 2021-03-29 一种低功耗控制方法及短距离无线通信芯片
EP21933556.9A EP4311132A4 (en) 2021-03-29 2021-03-29 LOW POWER CONSUMPTION CONTROL METHOD AND SHORT DISTANCE WIRELESS COMMUNICATION CHIP
CN202180095935.0A CN117044133A (zh) 2021-03-29 2021-03-29 一种低功耗控制方法及短距离无线通信芯片
US18/476,053 US20240023036A1 (en) 2021-03-29 2023-09-27 Low-power-consumption control method and short-range wireless communication chip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/083581 WO2022204870A1 (zh) 2021-03-29 2021-03-29 一种低功耗控制方法及短距离无线通信芯片

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/476,053 Continuation US20240023036A1 (en) 2021-03-29 2023-09-27 Low-power-consumption control method and short-range wireless communication chip

Publications (1)

Publication Number Publication Date
WO2022204870A1 true WO2022204870A1 (zh) 2022-10-06

Family

ID=83456941

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/083581 WO2022204870A1 (zh) 2021-03-29 2021-03-29 一种低功耗控制方法及短距离无线通信芯片

Country Status (4)

Country Link
US (1) US20240023036A1 (zh)
EP (1) EP4311132A4 (zh)
CN (1) CN117044133A (zh)
WO (1) WO2022204870A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230010533A1 (en) * 2021-07-09 2023-01-12 Apple Inc. Systems and methods for early fr2 tune-away

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001052429A1 (en) * 2000-01-10 2001-07-19 Airnet Communications Corporation A method and apparatus for automatic gain control on a time slot by time slot basis
CN103369659A (zh) * 2012-03-27 2013-10-23 马维尔国际有限公司 用于对接收信号进行自动增益控制agc的方法和设备
US10476539B1 (en) * 2017-09-15 2019-11-12 Marvell International Ltd. Automatic gain control adjustment in multi-antenna short-range wireless system
CN111130667A (zh) * 2019-12-26 2020-05-08 海能达通信股份有限公司 增益调整方法、装置、计算机可读存储介质及相关设备
US20200235761A1 (en) * 2019-01-18 2020-07-23 Apple Inc. Coordination of communication protocols using a shared front-end module

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018081472A1 (en) * 2016-10-28 2018-05-03 Qinghua Li Power control for channel sounding

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001052429A1 (en) * 2000-01-10 2001-07-19 Airnet Communications Corporation A method and apparatus for automatic gain control on a time slot by time slot basis
CN103369659A (zh) * 2012-03-27 2013-10-23 马维尔国际有限公司 用于对接收信号进行自动增益控制agc的方法和设备
US10476539B1 (en) * 2017-09-15 2019-11-12 Marvell International Ltd. Automatic gain control adjustment in multi-antenna short-range wireless system
US20200235761A1 (en) * 2019-01-18 2020-07-23 Apple Inc. Coordination of communication protocols using a shared front-end module
CN111130667A (zh) * 2019-12-26 2020-05-08 海能达通信股份有限公司 增益调整方法、装置、计算机可读存储介质及相关设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4311132A4 *

Also Published As

Publication number Publication date
EP4311132A1 (en) 2024-01-24
EP4311132A4 (en) 2024-05-08
CN117044133A (zh) 2023-11-10
US20240023036A1 (en) 2024-01-18

Similar Documents

Publication Publication Date Title
JP5313369B2 (ja) パワー制御ベースのアンテナスイッチングのための方法および装置
KR101449355B1 (ko) 무선 디바이스에서 복수의 무선 프로토콜들 간의 중재
US8565669B2 (en) Methods and apparatus for power reduction in a transceiver
JP2009535918A (ja) 無線デバイスを制御するためのシステム及び方法
US20240023036A1 (en) Low-power-consumption control method and short-range wireless communication chip
US11150722B1 (en) Mitigating thermal increases in electronic devices
US9496937B1 (en) Transmit antenna switching
JP6163167B2 (ja) 電池式モバイル無線情報デバイスの動作中の電力消費を最小化する方法
WO2023045502A1 (zh) 组网工作参数控制方法、终端及存储介质
EP3975629B1 (en) Time averaging for specific absorption rate &amp; power density
KR102200357B1 (ko) 무선 체인들을 인에이블하고 디스에이블하는 것에 기초한 전력 소비 관리
US20220095237A1 (en) Time averaging for specific absorption rate &amp; power density
US20230171649A1 (en) Adaptive wireless connections in multi-mode devices
US20200328509A1 (en) Control system and method for training a reconfigurable antenna
CN109560884B (zh) 用于路由设备的消除干扰信号的方法及设备
WO2020191622A1 (zh) 多通信系统中天线的调谐方法、装置和存储介质
WO2021094910A1 (en) Multiple network controller system, method, and computer program for providing enhanced network service
CN112637943A (zh) 射频组件工作模式控制方法、装置、电子设备和存储介质
JP6250093B2 (ja) 電池式モバイル無線情報デバイスの動作中の電力消費を最小化する方法
WO2021254226A1 (zh) 射频单元、信息处理方法、通信节点、电子设备和介质
TWI803121B (zh) 智慧天線切換方法、電子裝置及電腦可讀儲存媒體
US20240056849A1 (en) Measurement gap management
WO2022116582A1 (zh) 信号收发电路及方法、电路板组件、终端及存储介质
WO2023124262A1 (zh) 一种减少wifi耗电的方法、装置及计算机可读存储介质
WO2023231271A1 (zh) 一种功率分配的方法和装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21933556

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 202180095935.0

Country of ref document: CN

WWE Wipo information: entry into national phase

Ref document number: 2021933556

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2021933556

Country of ref document: EP

Effective date: 20231016

NENP Non-entry into the national phase

Ref country code: DE