WO2019157748A1 - Procédé et dispositif de communication - Google Patents

Procédé et dispositif de communication Download PDF

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Publication number
WO2019157748A1
WO2019157748A1 PCT/CN2018/076891 CN2018076891W WO2019157748A1 WO 2019157748 A1 WO2019157748 A1 WO 2019157748A1 CN 2018076891 W CN2018076891 W CN 2018076891W WO 2019157748 A1 WO2019157748 A1 WO 2019157748A1
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WIPO (PCT)
Prior art keywords
information
communication module
wake
downlink signal
wakeup
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PCT/CN2018/076891
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English (en)
Chinese (zh)
Inventor
甄斌
Original Assignee
华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201880089164.2A priority Critical patent/CN111713142B/zh
Priority to PCT/CN2018/076891 priority patent/WO2019157748A1/fr
Publication of WO2019157748A1 publication Critical patent/WO2019157748A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • 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 embodiments of the present application relate to communication technologies, and in particular, to a communication method and device.
  • the wide area wide area (LPWA) Internet of Things (IoT) application based on cellular network is receiving more and more attention.
  • the UE power consumption of LPWA IoT application is to measure the performance of LPWA IoT.
  • the commonly used method for reducing power consumption of the UE is Discontinuous Reception (DRX).
  • DRX Discontinuous Reception
  • PSM Power Saving Mode
  • UE User Equipment
  • eNB Base Station
  • PLM Power Saving Mode
  • UE User Equipment
  • eNB Base Station
  • PLM Power Saving Mode
  • UE User Equipment
  • eNB Base Station
  • the receiver of the UE is in a closed state.
  • the agreed time the UE automatically turns on the receiver.
  • the eNB notifies the UE whether there is downlink data.
  • the eNB When the downlink short-duration service arrives at the eNB, if the agreed time does not arrive, the eNB must wait until the agreed time arrives to notify the UE that there is downlink data and increase the downlink delay.
  • the embodiment of the present invention provides a communication method and device, so as to solve the problem that the eNB must wait for the arrival time of the appointed time to notify the UE that there is downlink data and increase the downlink delay.
  • an embodiment of the present application provides a communication method, including:
  • the first device determines wakeup information
  • the first device superimposes the wakeup information in a power domain of the downlink signal according to the set modulation mode
  • the first device determines the wake-up information, and the first device superimposes the wake-up information in the power domain of the downlink signal according to the set modulation mode, and the first device sends the wake-up information, so that the secondary communication module of the second device wakes up according to The information wakes up the main communication module, and establishes a connection with the first device through the main communication module. Since the wakeup information is superimposed and modulated in the power domain of the downlink signal, the wakeup information does not occupy independent time-frequency resources, and the work of the auxiliary communication module The power consumption is smaller than the power consumption of the main communication module in the second device.
  • the auxiliary communication module When the main communication module is turned off, the auxiliary communication module receives the wake-up information, thereby achieving low-power reception. When there is downlink service, the secondary communication module wakes up in time. The communication module does not increase the downlink delay and improves the service quality of the downlink service.
  • the modulation index of the modulation method is less than a preset threshold, and the preset threshold is used to make a performance change of the communication information received by the main communication module of the second device within a set range.
  • the wake-up information adopts shallow modulation, and the set modulation index is small, and the total power transmission range of the first device is small, and the receiving performance and the measurement performance of the second device are not affected.
  • the modulation method is a binary on-off keying modulation method.
  • the modulation method is a binary on-off keying (OOK) modulation method, and the OOK modulation method is simple and easy to implement.
  • OOK binary on-off keying
  • the frame length of the wakeup information is equal to or smaller than the frame length of the downlink signal.
  • the wake-up information includes at least 2 bits, and the bit 0 is represented by a first state or a first state combination of the total power of the downlink signal in the time length of the at least one orthogonal frequency division multiplexing OFDM symbol, where the bit 1 is The second state or the second state of the total power of the downlink signal over the length of time of the at least one OFDM symbol is represented.
  • different bit information may be represented by a power variation of the corresponding downlink signal of each bit of the wake-up information in the OFDM symbol, for example, the LTE downlink signal corresponding to the bit 0 in the wake-up information is at least one OFDM symbol time.
  • the total power modulation in the length is 0.9, and the total power of the LTE downlink signal corresponding to the bit 1 in the wakeup information is modulated to 1 in the time length of at least one OFDM symbol, so that the wakeup information does not occupy independent time-frequency resources, usually
  • the total power of up to 7 OFDM symbols modulates 1 bit wakeup information.
  • coverage can be improved.
  • the second device receives the wakeup information by using the secondary communication module in the second device, where the wakeup information is information that is superimposed and modulated in a power domain of the downlink signal, and the power consumption of the secondary communication module is smaller than that in the second device. Power consumption of the main communication module;
  • the second device wakes up the main communication module according to the wakeup information by using the secondary communication module
  • the second device establishes a connection with the first device by using the primary communication module.
  • the second device receives the wakeup information by using the secondary communication module in the second device, where the power consumption of the secondary communication module is smaller than the power consumption of the primary communication module in the second device, and the second device passes the secondary communication module according to the wakeup.
  • the information wakes up the main communication module, and the second device establishes a connection with the first device through the main communication module. Since the wakeup information is information superimposed and modulated in the power domain of the downlink signal, the wakeup information does not occupy independent time-frequency resources, and the auxiliary communication
  • the power consumption of the module is smaller than the power consumption of the main communication module in the second device.
  • the main communication module is turned off, the auxiliary communication module receives the wake-up information, thereby achieving low-power reception.
  • the secondary communication module will Awakening the main communication module in time does not increase the downlink delay and improves the service quality of the downlink service.
  • the frame length of the wakeup information is equal to or smaller than the frame length of the downlink signal.
  • the wake-up information includes at least 2 bits, and the bit 0 is represented by a first state or a first state combination of the total power of the downlink signal in the time length of the at least one orthogonal frequency division multiplexing OFDM symbol, where the bit 1 is The corresponding downlink signal is represented by a second state or a second state combination within the time length of the at least one OFDM symbol.
  • different bit information may be represented by a power variation of the corresponding downlink signal of each bit of the wake-up information in the OFDM symbol, for example, the LTE downlink signal corresponding to the bit 0 in the wake-up information is at least one OFDM symbol time.
  • the total power modulation in the length is 0.9, and the total power of the LTE downlink signal corresponding to the bit 1 in the wakeup information is modulated to 1 in the time length of at least one OFDM symbol, so that the wakeup information does not occupy independent time-frequency resources, usually
  • the total power of up to 7 OFDM symbols modulates 1 bit wakeup information.
  • coverage can be improved.
  • the second device by using the auxiliary communication module, to wake up the main communication module according to the wakeup information, includes:
  • the second device by using the secondary communication module, demodulating the wake-up information by using a non-coherent demodulation method based on envelope detection, and acquiring identifier information in the wake-up information;
  • the second device wakes up the main communication module by using the secondary communication module when the identification information matches the identification information of the second device.
  • the second device uses the non-coherent demodulation method based on the envelope detection to demodulate the wake-up information through the auxiliary communication module, and obtains the identification information in the wake-up information, and the second device passes the auxiliary communication module in the identification information and the first
  • the main communication module is awakened, and the wake-up information is demodulated by the non-coherent demodulation method based on the envelope detection, which can achieve the purpose of reducing power consumption compared with the conventional LTE receiver;
  • the main communication module is awake to establish a connection with the first device to ensure the accuracy and reliability of the information transmission.
  • an embodiment of the present application provides a communications device, including:
  • a processing module configured to determine wakeup information
  • the processing module is further configured to superimpose the wakeup information in a power domain of the downlink signal according to the set modulation mode;
  • a sending module configured to send the wakeup information.
  • the processing module may be a processor, and the sending module may be a transmitter or a transceiver.
  • the processing module determines wake-up information, and superimposes the wake-up information in a power domain of the downlink signal according to the set modulation mode; the sending module sends the wake-up information, so that the secondary communication module of the second device according to the wake-up information Wake up the main communication module, establish a connection with the first device through the main communication module, and the wakeup information is superimposed on the power domain information of the downlink signal, so that the wakeup information does not occupy independent time-frequency resources, and the power consumption of the auxiliary communication module
  • the power consumption of the main communication module in the second device is smaller, and the wake-up information is received by the auxiliary communication module when the main communication module is closed, so that low-power consumption is realized, and when there is downlink service, the auxiliary communication module wakes up the main communication in time.
  • the module does not increase the downlink delay and improves the service quality of the downlink service.
  • the modulation index of the modulation method is less than a preset threshold, and the preset threshold is used to make a performance change of the communication information received by the main communication module of the second device within a set range.
  • the wake-up information adopts shallow modulation, and the set modulation index is small, and the total power transmission range of the first device is small, and the receiving performance and the measurement performance of the second device are not affected.
  • the modulation method is a binary on-off keying modulation method.
  • the modulation method is a binary on-key control modulation method, which is simple and easy to implement.
  • the frame length of the wakeup information is equal to or smaller than the frame length of the downlink signal.
  • the wake-up information includes at least 2 bits, and the bit 0 is represented by a first state or a first state combination of the total power of the downlink signal in the time length of the at least one orthogonal frequency division multiplexing OFDM symbol, where the bit 1 is The second state or the second state of the total power of the downlink signal over the length of time of the at least one OFDM symbol is represented.
  • different bit information may be represented by a power variation of the corresponding downlink signal of each bit of the wake-up information in the OFDM symbol, for example, the LTE downlink signal corresponding to the bit 0 in the wake-up information is at least one OFDM symbol time.
  • the total power modulation in the length is 0.9, and the total power of the LTE downlink signal corresponding to the bit 1 in the wakeup information is modulated to 1 in the time length of at least one OFDM symbol, so that the wakeup information does not occupy independent time-frequency resources, usually
  • the total power of up to 7 OFDM symbols modulates 1 bit wakeup information.
  • coverage can be improved.
  • the embodiment of the present application provides a communications device, including:
  • a secondary communication module configured to receive wakeup information, where the wakeup information is information that is superimposed and modulated in a power domain of the downlink signal, and the power consumption of the secondary communication module is smaller than power consumption of the primary communication module in the second device;
  • the secondary communication module is further configured to wake up the main communication module according to the wakeup information
  • the primary communication module establishes a connection with the first device.
  • the secondary communication module and the primary communication module may both be transceivers.
  • the auxiliary communication module receives the wake-up information, and wakes up the main communication module according to the wake-up information; the main communication module establishes a connection with the first device, and the wake-up information is superimposed and modulated in the power domain information of the downlink signal, so that The wake-up information does not occupy independent time-frequency resources, and the power consumption of the secondary communication module is smaller than the power consumption of the primary communication module in the second device, and the wake-up information is received by the secondary communication module when the primary communication module is turned off, achieving low The power consumption is received.
  • the secondary communication module wakes up the main communication module in time, does not increase the downlink delay, and improves the service quality of the downlink service.
  • the frame length of the wakeup information is equal to or smaller than the frame length of the downlink signal.
  • the wake-up information includes at least 2 bits, and the bit 0 is represented by a first state or a first state combination of the total power of the downlink signal in the time length of the at least one orthogonal frequency division multiplexing OFDM symbol, where the bit 1 is The corresponding downlink signal is represented by a second state or a second state combination within the time length of the at least one OFDM symbol.
  • different bit information may be represented by a power variation of the corresponding downlink signal of each bit of the wake-up information in the OFDM symbol, for example, the LTE downlink signal corresponding to the bit 0 in the wake-up information is at least one OFDM symbol time.
  • the total power modulation in the length is 0.9, and the total power of the LTE downlink signal corresponding to the bit 1 in the wakeup information is modulated to 1 in the time length of at least one OFDM symbol, so that the wakeup information does not occupy independent time-frequency resources, usually
  • the total power of up to 7 OFDM symbols modulates 1 bit wakeup information.
  • coverage can be improved.
  • the auxiliary communication module wakes up the main communication module according to the wakeup information, and includes:
  • the secondary communication module demodulates the wake-up information by using an envelope detection-based non-coherent demodulation method, and acquires identification information in the wake-up information;
  • the secondary communication module wakes up the primary communication module when the identification information matches the identification information of the second device.
  • the secondary communication module uses the non-coherent demodulation method based on the envelope detection to demodulate the wake-up information, obtain the identification information in the wake-up information, and wake up the main communication module when the identification information matches the identification information of the second device.
  • the non-coherent demodulation method based on envelope detection is used to demodulate the wake-up information.
  • the power consumption can be reduced.
  • only the identification information in the wake-up information and the identification information of the second device are used. When the match is made, the main communication module is awake to establish a connection with the first device to ensure the accuracy and reliability of information transmission.
  • an embodiment of the present application provides a communications device, including:
  • the processor is further configured to superimpose the wakeup information in a power domain of the downlink signal according to the set modulation mode;
  • the modulation index of the modulation method is less than a preset threshold, and the preset threshold is used to make a performance change of the communication information received by the main communication module of the second device within a set range.
  • the modulation method is a binary on-off keying modulation method.
  • the frame length of the wakeup information is equal to or smaller than the frame length of the downlink signal.
  • the wake-up information includes at least 2 bits, and the bit 0 is represented by a first state or a first state combination of the total power of the downlink signal in the time length of the at least one orthogonal frequency division multiplexing OFDM symbol, where the bit 1 is The second state or the second state of the total power of the downlink signal over the length of time of the at least one OFDM symbol is represented.
  • the embodiment of the present application provides a communications device, including: a processor, a primary transceiver, and a secondary transceiver;
  • the processor receives wake-up information through the secondary transceiver, where the wake-up information is information that is superimposed and modulated in a power domain of the downlink signal, and the power consumption of the secondary transceiver is smaller than power consumption of the primary transceiver in the device;
  • the processor wakes up the main transceiver according to the wakeup information by using the secondary transceiver;
  • the processor establishes a connection with the first device through the primary transceiver.
  • the frame length of the wakeup information is equal to or smaller than the frame length of the downlink signal.
  • the wake-up information includes at least 2 bits, and the bit 0 is represented by a first state or a first state combination of the total power of the downlink signal in the time length of the at least one orthogonal frequency division multiplexing OFDM symbol, where the bit 1 is The corresponding downlink signal is represented by a second state or a second state combination within the time length of the at least one OFDM symbol.
  • the processor wakes up the main transceiver according to the wakeup information by using the secondary transceiver, including:
  • the processor wakes up the primary transceiver by the secondary transceiver when the identification information matches the identification information of the device.
  • the embodiment of the present application further provides a communications device, where the communications device includes a processor and a memory;
  • memory is used to store program instructions
  • the processor is configured to invoke and execute a program instruction stored in the memory, and execute the communication method shown in any one of the foregoing first aspects.
  • the embodiment of the present application further provides a communications device, where the network device may include a processor and a memory;
  • memory is used to store program instructions
  • the processor is configured to invoke and execute a program instruction stored in the memory, and execute the communication method shown in any one of the foregoing second aspects.
  • the embodiment of the present application further provides a computer readable storage medium, where the computer readable storage medium stores a computer program, and when the computer program is executed by the processor, performs the method shown in any one of the foregoing first aspects. Communication method.
  • the embodiment of the present application further provides a computer readable storage medium, where the computer readable storage medium stores a computer program, and when the computer program is executed by the processor, performs the method shown in any one of the foregoing second aspects. Communication method.
  • the embodiment of the present application further provides a chip, where the computer program is stored on the chip, and when the computer program is executed by the processor, the communication method shown in any one of the foregoing second aspects is performed.
  • the embodiment of the present application further provides a communication system, where the communication system includes the communication device provided in the foregoing fifth aspect, and the network device provided in the foregoing sixth aspect.
  • the first device determines the wake-up information, and the first device superimposes the wake-up information in the power domain of the downlink signal according to the set modulation mode, and the first device sends the wake-up information
  • the second device passes the
  • the secondary communication module in the second device receives the wake-up information
  • the power consumption of the secondary communication module is smaller than the power consumption of the primary communication module in the second device
  • the second device wakes up the main communication module according to the wake-up information through the secondary communication module
  • the second device passes The main communication module establishes a connection with the first device.
  • the wakeup information is superimposed and modulated in the power domain of the downlink signal, so that the wakeup information does not occupy independent time-frequency resources, and the power consumption of the secondary communication module is smaller than that in the second device.
  • the power consumption of the main communication module receives the wake-up information through the auxiliary communication module when the main communication module is turned off, and realizes low-power reception.
  • the auxiliary communication module wakes up the main communication module in time, and does not increase the downlink. Delays improve the quality of service for downstream services.
  • FIG. 1 is a schematic diagram of an application scenario of a communication method according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a design of a secondary communication module according to an embodiment of the present application.
  • FIG. 3 is an interaction flowchart of a communication method according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a frame format of wake-up information according to an embodiment of the present disclosure
  • FIG. 5 is a flowchart of a communication method according to an embodiment of the present application.
  • FIG. 6 is a block diagram of a communication device according to an embodiment of the present application.
  • FIG. 7 is a block diagram of a communication device according to an embodiment of the present application.
  • FIG. 8 is a block diagram of a communication device according to an embodiment of the present application.
  • FIG. 9 is a block diagram of a communication device according to an embodiment of the present application.
  • FIG. 1 is a schematic diagram of an application scenario of a communication method according to an embodiment of the present disclosure.
  • the scenario includes a first device 1 and a second device 2
  • the second device includes a primary communication module 3 and a secondary communication module 4 .
  • the first device 1 may be a network device or a terminal
  • the second device 2 is a terminal.
  • the power consumption of the main communication module 3 is much larger than that of the secondary communication module 4.
  • the main communication module 3 may be an LTE receiving module
  • the secondary communication module 4 may be added.
  • the wakeup radio receiving module opens the wakeup radio receiving module when the second device 2 turns off the LTE receiving module. In general, the wakeup receiver module consumes very little power, typically on the uW scale.
  • FIG. 2 is a schematic diagram of a design of a secondary communication module according to an embodiment of the present disclosure.
  • the secondary communication module may include a Berkeley Packet Filter (BPF) and a Low Noise Amplifier (Low Noise Amplifier).
  • BPF Berkeley Packet Filter
  • LNA Low Noise Amplifier
  • LPF Low Pass Filter
  • ADC Analog-to-Digital Converter
  • FIG. 3 is a flow chart of interaction of a communication method according to an embodiment of the present application. The method is based on the scenario shown in FIG. 1, as shown in FIG. 3, the method includes the following steps:
  • Step 101 The first device determines wakeup information.
  • the first device determines wakeup information.
  • FIG. 4 is a schematic structural diagram of a frame format of wake-up information according to an embodiment of the present disclosure.
  • the wake-up information may include a preamble, a delimiter, and a frame header. ), payload and Cyclic Redundancy Check (CRC); wherein the preamble is used to synchronize the secondary communication module; the delimiter is used to indicate the start of the wakeup data field, and the wakeup data field is used to add the customization Data, for example, wake-up start time, wake-up time length, etc.; the frame header includes the address of the second device, the transmission rate of the wake-up information, and the frame length of the wake-up information; the payload includes wake-up data; and the CRC field is used to make an error on the wake-up information. Detection.
  • Step 102 The first device superimposes the wake-up information in a power domain of the downlink signal according to the set modulation mode.
  • the wake-up information is superimposed and modulated in the power domain of the downlink signal according to the set modulation mode, that is, the total power of the downlink signal within a time length of one OFDM symbol is changed or not changed.
  • the wake-up information may be modulated by setting a modulation mode in advance according to actual needs, and the wake-up information is superimposed and modulated in a power domain of the downlink signal.
  • the power of each bit of the original downlink signal is the same.
  • the power of each bit of the wake-up information can be modulated, so that the downlink signal corresponding to each bit of the wake-up information is at least one OFDM symbol.
  • the total power in the time length changes.
  • the total power of the downlink signal corresponding to bit 0 in a time length of one OFDM symbol may be modulated to 0.9, and the downlink signal corresponding to bit 1 may be in a total length of one OFDM symbol.
  • the power modulation is 1.
  • the 0.9 and 1 are relative powers of the current downlink signal over a period of one OFDM symbol.
  • the second device may modulate the wake-up information by using a processor, or may add a unique controller to the antenna to modulate the wake-up information.
  • the wake-up information adopts shallow modulation, and the set modulation index is small.
  • the preset threshold is 10%
  • the modulation index is less than 10%.
  • the total transmit power is changed in a small range. The receiving performance and measurement performance of the two devices.
  • the modulation method is a binary on-off keying (OOK) modulation method.
  • OOK modulation method is simple and easy to implement.
  • the length of the signal frame corresponding to the wakeup information is equal to or smaller than the frame length of the downlink signal.
  • the first state indicates that the power is greater than 0 and less than 1, the first state combination is a combination similar to 01010101, the second state indicates a power of 1, the second state combination is a combination similar to 10101010, or the first state combination is similar.
  • the power indicated by the second state is 1, and the second state is combined into a combination similar to 01010101.
  • the power indicated by 0 is greater than 0 and less than 1, and the power indicated by 1 is 1, for example, the power indicated by 0 is 0.9, and the power indicated by the first state combination is 0.9, 1, 0.9, 1, 0.9, 1;
  • the power indicated by the second state combination is 1, 0.9, 1, 0.9, 1, 0.9, 1, 09.
  • the corresponding downlink signal of each bit of the wake-up information may be used to represent different bit information in the power variation of the OFDM symbol, for example, the LTE downlink signal corresponding to the bit 0 in the wake-up information is at least one OFDM symbol.
  • the total power modulation in the length of time is 0.9, and the total power of the LTE downlink signal corresponding to bit 1 in the wakeup information is modulated to 1 in the time length of at least one OFDM symbol, so that the wakeup information does not occupy independent time-frequency resources, usually Down, the total power of up to 7 OFDM symbols modulates 1 bit wakeup information.
  • coverage can be improved.
  • Step 103 The first device sends wakeup information.
  • the first device sends the wakeup information to the second device.
  • Step 104 The second device receives the wakeup information by using the secondary communication module in the second device, where the wakeup information is information that is superimposed and modulated in a power domain of the downlink signal, and the power consumption of the secondary communication module is smaller than that of the primary communication module in the second device. Consumption.
  • the secondary communication module in the second device is equivalent to a wakeup receiver, and the power consumption of the wakeup receiver is much smaller than the power consumption of the primary communication module.
  • the wakeup receiver consumes very low power, usually in the uW. Magnitude.
  • the primary communication module is in the off state
  • the secondary communication module is in the standby state
  • the secondary communication module can receive the information sent by the first device at any time, and the secondary communication module can detect the power of the information sent by the first device by using the power detection.
  • the information sent by a device is superimposed and modulated on the power domain of the downlink signal, the information is determined to be wake-up information.
  • Step 105 The second device wakes up the main communication module according to the wakeup information by using the auxiliary communication module.
  • the secondary communication module determines that the received information is wake-up information
  • the primary communication module is awake, so that the second device establishes a connection with the first device through the primary communication module.
  • the step “the second device wakes up the main communication module according to the wakeup information by using the auxiliary communication module” includes:
  • the secondary communication module does not include the high frequency local oscillator, and the secondary communication module uses the non-coherent demodulation method based on the envelope detection to demodulate the wakeup information and obtain the identification information therein.
  • the secondary communication module determines whether the identification information in the wakeup information matches the identification information of the second device, and if yes, wakes up the primary communication module, and the primary communication module receives a paging signal of the first device. After that, the first device is accessed according to the original protocol process; if there is no match, there is no operation.
  • the identifier information in the wakeup information is the same as the identifier information of the second device, it is determined that the identifier information in the wakeup information matches the identifier information of the second device. Or the first device and the second device may pre-negotiate the correspondence between the identification information. If the identifier information in the wake-up information and the identifier information of the second device meet the pre-negotiated correspondence, determine the identifier in the wake-up information. The information matches the identification information of the second device.
  • the second device uses the non-coherent demodulation method based on the envelope detection to demodulate the wake-up information through the auxiliary communication module, and obtains the identification information in the wake-up information, and the second device passes the auxiliary communication module to identify the identifier.
  • the main communication module is awakened, and the wake-up information is demodulated by the non-coherent demodulation method based on the envelope detection, which can achieve the purpose of reducing power consumption compared with the conventional LTE receiver; Only when the identification information in the wakeup information matches the identification information of the second device, the main communication module is awake to establish a connection with the first device, thereby ensuring accuracy and reliability of information transmission.
  • Step 106 The second device establishes a connection with the first device by using the main communication module.
  • the secondary communication module receives the wake-up information, the power consumption of the secondary communication module is smaller than the power consumption of the primary communication module in the second device, and the second device wakes up the main communication module according to the wake-up information through the secondary communication module, and the second device passes the primary communication
  • the module establishes a connection with the first device, and the wakeup information is superimposed on the power domain information of the downlink signal, so that the wakeup information does not occupy independent time-frequency resources, and the power consumption of the secondary communication module is smaller than the primary communication in the second device.
  • the power consumption of the module receives the wake-up information through the secondary communication module when the main communication module is turned off, and realizes low-power reception. When there is downlink service, the secondary communication module wakes up the main communication module in time without increasing the downlink delay. Improve the service quality of the downlink business.
  • the processing module 11 is further configured to superimpose the wakeup information in a power domain of the downlink signal according to the set modulation mode;
  • the sending module 12 is configured to send the wakeup information.
  • the modulation index of the modulation method is less than a preset threshold, and the preset threshold is used to make the performance change of the communication information received by the main communication module of the second device within a set range.
  • the modulation method is a binary on-off keying modulation method.
  • the frame length of the wakeup information is equal to or smaller than the frame length of the downlink signal.
  • the wake-up information includes at least 2 bits, and the bit 0 is represented by a first state or a first state combination of the total power of the downlink signal in the time length of the at least one orthogonal frequency division multiplexing OFDM symbol, and the bit 1 is determined by the downlink signal.
  • a second state or a second state of total power over a length of time of at least one OFDM symbol is represented.
  • the processing module 11 may be a processor, and the sending module 12 may be a transmitter.
  • the communication device provided by this embodiment may be used to perform the method steps of the first device side in any of the embodiments in FIG. 3 to FIG. 5, and the implementation principle and the beneficial effects are similar, and details are not described herein again.
  • FIG. 7 is a block diagram of a communication device according to an embodiment of the present disclosure. As shown in FIG. 7, the device includes:
  • the auxiliary communication module 21 is configured to receive wake-up information, where the wake-up information is information superimposed and modulated in a power domain of the downlink signal, and the power consumption of the auxiliary communication module is smaller than power consumption of the main communication module in the communication device;
  • the frame length of the wakeup information is equal to or smaller than the frame length of the downlink signal.
  • the wake-up information includes at least 2 bits, and the bit 0 is represented by a first state or a first state combination of the total power of the downlink signal in the time length of the at least one orthogonal frequency division multiplexing OFDM symbol, and the bit 1 is correspondingly The second signal or the second state of the downlink signal over a length of time of at least one OFDM symbol is represented in combination.
  • the secondary communication module 21 wakes up the main communication module according to the wakeup information, including:
  • the auxiliary communication module 21 demodulates the wake-up information by using a non-coherent demodulation method based on envelope detection, and acquires identification information in the wake-up information;
  • the secondary communication module 21 wakes up the primary communication module 22 when the identification information matches the identification information of the communication device.
  • the secondary communication module 21 and the primary communication module 22 may be transceivers.
  • the communication device provided by this embodiment may be used to perform the method steps of the second device side described in any of the embodiments of FIG. 3 to FIG. 5, and the implementation principle and the beneficial effects are similar, and details are not described herein again.
  • FIG. 8 is a block diagram of a communication device according to an embodiment of the present disclosure. As shown in FIG. 8, the device includes:
  • the processor 31 is configured to determine wakeup information
  • the processor 31 is further configured to superimpose the wakeup information in a power domain of the downlink signal according to the set modulation mode;
  • the modulation method is a binary on-off keying modulation method.
  • the frame length of the wakeup information is equal to or smaller than the frame length of the downlink signal.
  • the wake-up information includes at least 2 bits, and the bit 0 is represented by a first state or a first state combination of the total power of the downlink signal in the time length of the at least one orthogonal frequency division multiplexing OFDM symbol, and the bit 1 is determined by the downlink signal.
  • a second state or a second state of total power over a length of time of at least one OFDM symbol is represented.
  • the communication device provided by this embodiment may be used to perform the method steps of the first device side in any of the embodiments in FIG. 3 to FIG. 5, and the implementation principle and the beneficial effects are similar, and details are not described herein again.
  • FIG. 9 is a block diagram of a communication device according to an embodiment of the present invention, as shown in FIG. 9, including: a processor 41, a main transceiver 42 and a secondary transceiver 43;
  • the processor 41 receives the wake-up information through the secondary transceiver 43.
  • the wake-up information is information superimposed and modulated in the power domain of the downlink signal, and the power consumption of the secondary transceiver 43 is smaller than the power consumption of the main transceiver 42 in the communication device;
  • the processor 41 wakes up the main transceiver 42 according to the wakeup information through the auxiliary transceiver 43;
  • the processor 41 establishes a connection with the first device through the primary transceiver 42.
  • the frame length of the wakeup information is equal to or smaller than the frame length of the downlink signal.
  • the wake-up information includes at least 2 bits, and the bit 0 is represented by a first state or a first state combination of the total power of the downlink signal in the time length of the at least one orthogonal frequency division multiplexing OFDM symbol, and the bit 1 is correspondingly The second signal or the second state of the downlink signal over a length of time of at least one OFDM symbol is represented in combination.
  • the processor 41 wakes up the main transceiver 42 according to the wakeup information by using the auxiliary transceiver 43, including:
  • the processor 41 demodulates the wake-up information by using the non-coherent demodulation method based on the envelope detection by the auxiliary transceiver 43 to obtain the identification information in the wake-up information;
  • the processor 41 wakes up the main transceiver 42 through the secondary transceiver 43 when the identification information matches the identification information of the communication device.
  • the communication device provided by this embodiment may be used to perform the method steps of the second device side described in any of the embodiments of FIG. 3 to FIG. 5, and the implementation principle and the beneficial effects are similar, and details are not described herein again.
  • the processor may be a central processing unit (CPU), or may be another general-purpose processor, a digital signal processor (DSP), or an application specific integrated circuit (Application Specific Integrated Circuit). , ASIC) and so on.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in connection with the present application may be directly embodied by hardware processor execution or by a combination of hardware and software modules in a processor.
  • All or part of the steps of implementing the above method embodiments may be performed by hardware associated with the program instructions.
  • the aforementioned program can be stored in a readable memory.
  • the program when executed, performs the steps including the foregoing method embodiments; and the foregoing memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state hard disk, tape (magnetic tape), floppy disk, optical disc, and any combination thereof.
  • the embodiment of the present application further provides a communication device, where the communication device can include a processor and a memory;
  • memory is used to store program instructions
  • the processor is configured to invoke and execute a program instruction stored in the memory, and execute the communication method shown in any one of the foregoing first aspects.
  • the embodiment of the present application further provides a communication device, where the network device can include a processor and a memory;
  • memory is used to store program instructions
  • the processor is configured to invoke and execute a program instruction stored in the memory, and execute the communication method shown in any one of the foregoing second aspects.
  • the embodiment of the present application further provides a computer readable storage medium.
  • the computer readable storage medium stores a computer program.
  • the communication method shown in any one of the foregoing first aspects is executed.
  • the embodiment of the present application further provides a computer readable storage medium.
  • the computer readable storage medium stores a computer program, and when the computer program is executed by the processor, performs the communication method shown in any one of the foregoing second aspects.
  • the embodiment of the present application further provides a chip on which a computer program is stored, and when the computer program is executed by the processor, the communication method shown in any one of the above first aspects is executed.
  • the embodiment of the present application further provides a chip on which a computer program is stored, and when the computer program is executed by the processor, the communication method shown in any one of the foregoing second aspects is executed.
  • the embodiment of the present application further provides a communication system, which includes the communication device provided in the foregoing fifth aspect and the network device provided in the sixth aspect.

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

Abstract

La présente invention concerne un procédé et un appareil de communication. Le procédé comprend les étapes suivantes : un premier dispositif détermine des informations de réveil ; le premier dispositif module les informations de réveil sur un domaine de puissance d'un signal de liaison descendante de manière superposée selon un mode de modulation prédéfini ; le premier dispositif envoie les informations de réveil de telle sorte qu'un module de communication secondaire d'un second dispositif réveille un module de communication primaire selon les informations de réveil, et établit une connexion avec le premier dispositif au moyen du module de communication primaire. Étant donné que les informations de réveil sont les informations modulées sur le domaine de puissance du signal de liaison descendante de manière superposée, les informations de réveil n'occupent pas de ressources temps-fréquence indépendantes. De plus, étant donné que la consommation d'énergie du module de communication secondaire est inférieure à celle du module de communication primaire dans le second dispositif, la réception d'une consommation d'énergie plus faible est obtenue en recevant les informations de réveil au moyen du module de communication secondaire dans le cas où le module de communication primaire est éteint. Lorsqu'il y a un service de liaison descendante, le module de communication secondaire réveille le module de communication primaire à temps, ce qui évite ainsi l'augmentation du retard de liaison descendante et améliore la qualité de service du service de liaison descendante.
PCT/CN2018/076891 2018-02-14 2018-02-14 Procédé et dispositif de communication WO2019157748A1 (fr)

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