WO2020143751A1 - Communication method and communication apparatus - Google Patents

Communication method and communication apparatus Download PDF

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Publication number
WO2020143751A1
WO2020143751A1 PCT/CN2020/071360 CN2020071360W WO2020143751A1 WO 2020143751 A1 WO2020143751 A1 WO 2020143751A1 CN 2020071360 W CN2020071360 W CN 2020071360W WO 2020143751 A1 WO2020143751 A1 WO 2020143751A1
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WO
WIPO (PCT)
Prior art keywords
power saving
reference signal
signal
saving signal
transmission resource
Prior art date
Application number
PCT/CN2020/071360
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French (fr)
Chinese (zh)
Inventor
铁晓磊
周涵
花梦
Original Assignee
华为技术有限公司
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Publication of WO2020143751A1 publication Critical patent/WO2020143751A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • 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
    • 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
    • H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
    • 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

  • This application relates to the field of communications, and in particular to a communication method and a communication device.
  • the terminal device In order to reduce power consumption, the terminal device usually enters the sleep state when it is in the idle state. At intervals, the terminal device detects the wake-up signal. If the wake-up signal is detected, the terminal device enters the wake-up state from the sleep state and executes related Processing, for example, synchronization, channel estimation, beam training, etc.
  • a method for waking up the terminal device is to wake up the terminal device through a reference signal, which is a wake-up signal, and the terminal device is woken up and performs corresponding processing based on the reference signal.
  • the terminal device does not necessarily need to perform processing related to the reference signal.
  • the discontinuous reception (DRX) period is usually less than the transmission period of the tracking reference signal (TRS).
  • TRS tracking reference signal
  • the present application provides a communication method and a communication apparatus.
  • a network device transmits a power saving signal having an association relationship with a reference signal, so that the terminal device can perform corresponding processing based on the reference signal when necessary, for example, performing synchronization processing, Thereby reducing the power consumption of the terminal device.
  • a communication method including: detecting a power saving signal; determining whether a reference signal exists on a transmission resource according to the detection result of the power saving signal, the reference signal is a tracking reference signal, or a channel estimation reference Signal, or, beam training reference signal.
  • the network device when the network device needs the terminal device to report the channel quality, it can send a power saving signal to the terminal device. After detecting the power saving signal, the terminal device receives the channel estimation reference signal on the transmission resource, and performs the channel according to the channel estimation reference signal. estimate. It can be seen that the terminal device performing the above method can receive the reference signal when necessary, reducing the frequency of receiving the reference signal, thereby reducing power consumption.
  • the time domain length of the power saving signal is smaller than the time domain length of the reference signal, and/or, the frequency domain width of the power saving signal is smaller than the frequency domain width of the reference signal.
  • the power saving signal provided by the present application as a wake-up signal can reduce resource overhead.
  • the power-saving signal can multiplex a partial sequence of the reference signal, which can reduce the complexity of the terminal device detecting the power-saving signal.
  • determining whether there is a reference signal on the transmission resource according to whether the power saving signal is detected includes: when the power saving signal is detected, determining that there is a reference signal on the transmission resource; or, when no power saving signal is detected When it is determined that there is no reference signal on the transmission resource.
  • the terminal device only needs to determine whether the power saving signal is detected, and does not need to determine whether there is a reference signal on the transmission resource based on the content carried by the power saving signal. Therefore, the above solution has the characteristics of simple and easy implementation.
  • the communication method further includes: when it is determined that there is no reference signal on the transmission resource, maintaining the sleep state.
  • the terminal device does not detect the power saving signal, so the terminal device can remain in a sleep state to reduce power consumption.
  • determining whether the reference signal exists on the transmission resource according to whether the power saving signal is detected includes: when the power saving signal is detected, determining whether the reference signal exists on the transmission resource according to the attribute of the power saving signal; or, When the power saving signal is not detected, it is determined that there is no reference signal on the transmission resource.
  • the above solution enables the terminal device to do more processing based on the power saving signal. For example, after determining that there is no reference signal on the transmission resource based on the attribute of the power saving signal, it can also monitor other channels based on the power saving signal (for example, physical Downlink control channel).
  • determining whether a reference signal exists on the transmission resource according to the attribute of the power saving signal includes: when the sequence carried by the power saving signal is the first sequence, determining that there is a reference signal on the transmission resource; or, when the power saving When the sequence carried by the signal is the second sequence, it is determined that there is no reference signal on the transmission resource.
  • the power saving signal can multiplex the sequence of reference signals, determining whether there is a reference signal on the transmission resource based on the sequence can reduce the complexity of the terminal device detecting the power saving signal.
  • detecting the power saving signal includes: detecting the power saving signal within a preset time period.
  • the network device may also configure (for example, a semi-static configuration) the transmission period of the reference signal, and the terminal device detects the power saving signal within a preset period based on the transmission period of the reference signal, thereby further reducing the power consumption of the terminal device.
  • the preset time period is the time period during which the network device sends the reference signal.
  • the present application provides another communication method, including: determining whether to send a reference signal, the reference signal is a tracking reference signal, or, a channel estimation reference signal, or, a beam training reference signal;
  • the power saving signal is transmitted; or, when it is determined that the reference signal is not transmitted, the power saving signal is not transmitted;
  • the power saving signal of the first attribute is transmitted; or, when it is determined that the reference signal is not transmitted, the power saving signal of the second attribute is transmitted;
  • the power saving signal of the first attribute is transmitted; or, when it is determined that the reference signal is not transmitted but the power saving signal needs to be transmitted, the power saving signal of the second attribute is transmitted; or, when it is determined that the reference is transmitted When the signal does not need to send the power saving signal, the power saving signal is not sent.
  • the network device first determines whether a reference signal needs to be sent, and sends a power saving signal to the terminal device when the reference signal needs to be sent, to instruct the terminal device to receive the reference signal; when no reference signal needs to be sent, the power saving signal may not be sent .
  • the network device may also send the power saving signal of the first attribute to the terminal device when the reference signal needs to be sent, and send the power saving signal of the second attribute to the terminal device when the reference signal does not need to be sent.
  • the above solution can reduce the information overhead and power consumption of network devices.
  • the time domain length of the power saving signal is smaller than the time domain length of the reference signal, and/or, the frequency domain width of the power saving signal is smaller than the frequency domain width of the reference signal.
  • the power saving signal provided by the present application as a wake-up signal can reduce resource overhead.
  • the power-saving signal can multiplex a partial sequence of the reference signal, which can reduce the complexity of the terminal device detecting the power-saving signal.
  • the power saving signal of the first attribute is a power saving signal carrying the first sequence
  • the power saving signal of the second attribute is a power saving signal carrying the second sequence
  • the first sequence is used
  • the second sequence is used to indicate that there is no reference signal on the transmission resource.
  • the power saving signal can multiplex the sequence of reference signals, determining whether there is a reference signal on the transmission resource based on the sequence can reduce the complexity of the terminal device detecting the power saving signal.
  • sending the power saving signal includes: sending the power saving signal within a preset time period; or,
  • Sending the power saving signal of the first attribute includes: sending the power saving signal of the first attribute within a preset time period, or,
  • Sending the power saving signal of the second attribute includes: sending the power saving signal of the second attribute within a preset time period.
  • the network device may configure (for example, a semi-static configuration) the transmission period of the reference signal, so that the terminal device detects the power saving signal within a preset period based on the transmission period of the reference signal, so that the power consumption of the terminal device can be further reduced.
  • the preset time period is the time period during which the network device sends the reference signal.
  • the present application provides a communication device, which may be a terminal device or a chip in the terminal device.
  • the device may include a processing unit and a transceiver unit.
  • the processing unit may be a processor, and the transceiving unit may be a transceiver;
  • the terminal device may further include a storage unit, the storage unit may be a memory; the storage unit is used to store instructions, the processing The unit executes the instructions stored in the storage unit, so that the terminal device executes the method described in the first aspect.
  • the processing unit may be a processor, and the transceiving unit may be an input/output interface, a pin, or a circuit, etc.; the processing unit executes instructions stored in the storage unit to enable the terminal
  • the device performs the method described in the first aspect, and the storage unit may be a storage unit within the chip (eg, registers, cache, etc.), or may be a storage unit outside the chip within the terminal device (eg, read-only) Memory, random access memory, etc.).
  • the present application provides another communication device, which may be a network device or a chip in the network device.
  • the device may include a processing unit and a transceiver unit.
  • the processing unit may be a processor
  • the transceiver unit may be a transceiver
  • the network device may further include a storage unit, which may be a memory; the storage unit is used to store instructions, the processing The unit executes the instructions stored by the storage unit, so that the network device performs the method described in the second aspect.
  • the processing unit may be a processor, and the transceiver unit may be an input/output interface, a pin, or a circuit, etc.; the processing unit executes instructions stored in the storage unit to enable the network
  • the device performs the method described in the second aspect.
  • the storage unit may be a storage unit within the chip (eg, registers, cache, etc.), or a storage unit outside the chip within the network device (eg, read-only) Memory, random access memory, etc.).
  • the present application provides a computer-readable storage medium in which a computer program is stored.
  • the processor is caused to execute the method described in the first aspect.
  • the present application provides a computer-readable storage medium in which a computer program is stored.
  • the processor is caused to perform the method described in the second aspect.
  • the present application provides a computer program product, the computer program product comprising: computer program code, when the computer program code is executed by a processor, the processor is caused to execute the method described in the first aspect.
  • the present application provides a computer program product, the computer program product comprising: computer program code, when the computer program code is executed by a processor, causing the processor to execute the method described in the second aspect.
  • FIG. 1 is a schematic diagram of a communication system suitable for this application.
  • FIG. 2 is a schematic diagram of a DRX cycle applicable to this application.
  • FIG. 3 is a schematic diagram of a communication method provided by this application.
  • FIG. 4 is a schematic diagram of a time-frequency resource occupied by a power saving signal provided by this application;
  • FIG. 5 is a schematic diagram of another power-saving time-frequency resource occupied by a signal provided by this application.
  • FIG. 6 is a schematic diagram of another time-frequency resource occupied by a power saving signal provided by this application.
  • FIG. 7 shows a schematic diagram of another example of the communication method provided by the present application.
  • FIG. 8 is a schematic diagram of a communication device provided by this application.
  • FIG. 9 is a schematic diagram of a terminal device provided by this application.
  • FIG. 10 is a schematic diagram of a network device provided by this application.
  • FIG. 1 is a schematic diagram of a communication system suitable for the present application.
  • the communication system 100 includes a network device 110 and a terminal device 120.
  • the terminal device 120 communicates with the network device 110 through electromagnetic waves.
  • the terminal device 120 may include a variety of handheld devices, in-vehicle device having a wireless communication function, wearable device, computing device, or other processing device connected to a wireless modem, for example, the Third Generation Partnership Project (3 rd Generation partnership project (3GPP) defined user equipment (UE), mobile station (mobile station, MS), soft terminal, home gateway, set-top box, etc.
  • 3GPP Third Generation Partnership Project
  • UE mobile station
  • MS mobile station
  • soft terminal home gateway
  • set-top box set-top box
  • the network device 110 may be a base station defined by 3GPP, for example, a base station (gNB) in a 5G communication system.
  • the network device 110 may also be a non-3GPP (non-3GPP) access network device, such as an access gateway (access gateway (AGF)).
  • the network device 110 may also be a relay station, an access point, an in-vehicle device, a wearable device, and other types of devices.
  • the communication system 100 is only an example, and the communication system to which the present application is applied is not limited thereto.
  • the number of network devices and terminal devices included in the communication system 100 may be other numbers.
  • the terminal device 120 in the connected state will continuously try to receive the physical downlink control channel (physical downlink control channel, PDCCH).
  • the terminal device 120 may start an inactive timer (inactive timer).
  • the downlink control information (downlink control information, DCI) schedules the newly transmitted data, and the terminal device 120 resets the inactive timer.
  • DRX-onDurationTimer DRX duration timer
  • DRX-InactivityTimer DRX inactivity timer
  • DRX-RetransmissionTimerDL DRX downlink retransmission timer
  • DRX-RetransmissionTimerUL DRX uplink retransmission timer
  • the DRX-InactivityTimer is started when the terminal device receives a PDCCH indication of a new downlink or uplink transmission. During the timing of the DRX-InactivityTimer, the terminal device is in an active state.
  • the terminal device sends the physical uplink control channel (PUCCH) or physical uplink shared channel (hybrid automatic repeat request, HARQ) feedback information to the network device, the physical uplink shared channel (PUCCH) physical link (shared channel, PUSCH), it will start the downlink HARQ round-trip time timer (HARQ-RTT-TimerDL), HARQ-RTT-TimerDL means that the network device will not immediately retransmit occur, so HARQ-RTT-TimerDL timing period , Allowing the terminal device to enter the inactive state, that is, it may not monitor the PDCCH.
  • PUCCH physical uplink control channel
  • HARQ hybrid automatic repeat request
  • DRX-RetransmissionTimerDL When HARQ-RTT-TimerDL times out, if there is data that fails to decode in the terminal device, DRX-RetransmissionTimerDL is started. During the timing of DRX-RetransmissionTimerDL, the terminal device is in the activated state.
  • the following is the downlink transmission process of the terminal device in the radio resource control (resource, resource, control, RRC) connected state under the DRX mechanism.
  • Step 1 During the DRX-onDurationTimer timing, the terminal device monitors the PDCCH.
  • Step 2 If the terminal device detects that the PDCCH indicates a new downlink transmission during the DRX-onDurationTimer timing, it starts the DRX-InactivityTimer. A new transmission of data indicates the start of a HARQ process.
  • Step 3 The terminal device decodes downlink control information (downlink control information, DCI) in the PDCCH, and receives the PDSCH based on the DCI.
  • DCI downlink control information
  • Step 4 The terminal device carries HARQ feedback information in the PUCCH or PUSCH and sends it to the network device.
  • Step 5 The terminal device starts the HARQ-RTT-TimerDL corresponding to the HARQ process after the first symbol after sending all symbols of the PUCCH or PUSCH carrying HARQ feedback information.
  • Step 6 When HARQ-RTT-TimerDL times out, if there is a transport block (TB) in the previous PDSCH that failed to be decoded, the terminal device will start DRX-RetransmissionTimerDL. During the timing of DRX-RetransmissionTimerDL, proceed to step 7. If all the previous PDSCHs are successfully decoded, the terminal device does not start DRX-RetransmissionTimerDL.
  • TB transport block
  • Step 7 During the timing of DRX-RetransmissionTimerDL, the terminal device is in the activated state and starts to blindly detect the PDCCH. If the terminal device detects retransmission DCI during DRX-RetransmissionTimerDL timing, it closes DRX-RetransmissionTimerDL and receives PDSCH based on the retransmission DCI. After decoding the PDSCH, steps 4 to 7 are performed.
  • the length of HARQ-RTT-TimerDL is configured by the network device. Specifically, the length of HARQ-RTT-TimerDL is related to the time K3 when the network device processes the HARQ feedback information, where K3 indicates that the HARQ feedback information of a certain HARQ process sent from the terminal device is received from the network device, and then the HARQ feedback information is processed to determine Time to retransmit data.
  • the DRX cycle is shown in Figure 2. It should be noted that the terminal device 120 may be awakened for time-frequency synchronization within a period of time (for example, several time slots) before the DRX-onDurationTimer is started, to prevent the terminal device 120 from deviating in time and frequency domain due to long sleep At the same time, the UE may also try to receive the system message first to prevent the terminal device 120 from moving from one cell to another cell, the system message of the other cell is different from the original cell.
  • a period of time for example, several time slots
  • the terminal device 120 needs to periodically monitor the signals sent by the network device 110 from the sleep state to the awake state, for example, to monitor the TRS and perform time-frequency synchronization according to the received TRS, but time-frequency synchronization is not required for each wake-up stage.
  • the present application provides a communication method 300.
  • the communication method 300 may be applied to the communication system shown in FIG. 1, for example, may be executed by the terminal device 120, or may be executed by a chip in the terminal device 120.
  • the "terminal equipment” and “network equipment” described below are no longer accompanied by reference signs.
  • the method 300 includes:
  • the power saving signal may be a wakeup signal (WUS) or a sleep signal (go-to-sleep signal, GTS).
  • WUS wakeup signal
  • GTS go-to-sleep signal
  • the reference signal is a tracking reference signal, or a channel estimation reference signal, or a beam training reference signal.
  • the duration of the DRX cycle is usually fixed or semi-statically configured, not every task that needs to be processed by the terminal device during the wake-up phase. Therefore, if the network device needs to instruct the terminal device to process the task during the wake-up phase (for example, receive information) , The network device will send a power saving signal to the terminal device, and the terminal device will perform the corresponding operation after receiving the power saving signal; if the terminal device does not need to process tasks during the wake-up phase, the network device may not send the power saving signal, the terminal The device can enter the sleep state without receiving the power saving signal to save power.
  • the terminal device detects the power saving signal, the terminal device determines that there is a reference signal on the transmission resource, and can receive the reference signal on the transmission resource to facilitate the reference signal based Perform the corresponding operation; if the terminal device does not detect the power saving signal, the terminal device determines that there is no reference signal on the transmission resource, and can enter the sleep state to save power consumption, or can perform other operations, such as monitoring PDCCH.
  • the association relationship between the power saving signal and the reference signal may be defined by a communication protocol, or may be configured by a network device.
  • the above transmission resources may be defined by the communication protocol or configured by the network device.
  • the above reference signal may be a TRS, a channel estimation reference signal or a beam training reference signal.
  • the network device When the network device determines that the terminal device needs to perform time-frequency synchronization, it can send a power saving signal to the terminal device. After detecting the power saving signal, the terminal device receives TRS on the transmission resource and performs time-frequency synchronization according to the TRS.
  • the network device When the network device needs the terminal device to report the channel quality, it can send a power saving signal to the terminal device. After detecting the power saving signal, the terminal device receives the channel estimation reference signal on the transmission resource and performs channel estimation according to the channel estimation reference signal.
  • the network device When the network device needs the terminal device to train a beam, it can send a power saving signal to the terminal device. After detecting the power saving signal, the terminal device receives the beam training reference signal on the transmission resource and performs beam training according to the beam training reference signal.
  • the reference signal is an example of a beam training signal.
  • the beam training signal is used for terminal device training to obtain the best receiving beam.
  • the terminal device detects a power saving signal, it is determined that the network device will send a beam training wave reference signal, so that the terminal The device uses the beam training reference signal to find the receive beam that receives the subsequent signal or channel.
  • the terminal device applying the method 300 can receive the reference signal when necessary, reducing the frequency of receiving the reference signal, thereby reducing power consumption.
  • the network device For a network device, the network device first determines whether a reference signal needs to be sent. When a reference signal needs to be sent, a power saving signal is sent to the terminal device to instruct the terminal device to receive the reference signal; when a reference signal is not needed, it can be No power saving signal is sent, thereby reducing the information overhead and power consumption of network devices.
  • the above gives an example in which the terminal device determines whether a reference signal exists on the transmission resource according to whether the power saving signal is detected.
  • the terminal device may also determine whether the reference signal exists on the transmission resource according to the attribute of the power saving signal.
  • the network device may send a power saving signal that carries the first sequence; when the network device considers that the resources are insufficient, it cannot send the reference signal or When the terminal does not currently need to use the reference signal, the network determines not to send the reference signal, and the network device may send a power saving signal carrying the second sequence.
  • the terminal device After receiving the power saving signal, the terminal device determines whether there is a reference signal on the transmission resource according to different sequences. If the sequence carried by the power saving signal is the first sequence, the terminal device determines that there is a reference signal on the transmission resource and can receive the reference signal on the transmission resource; if the sequence carried by the power saving signal is the second sequence, the terminal device determines the transmission There is no reference signal on the resource. At this time, the terminal device may not receive the reference signal on the transmission resource to perform time-frequency synchronization or channel state estimation or receive beam training, but the terminal still needs to wake up to monitor the PDCCH, which can reduce the reception Reference the frequency of the signal while avoiding adverse effects on other services.
  • the terminal device if the terminal device does not detect the power saving signal carrying the first sequence or the second sequence, the terminal device will also determine that there is no reference signal on the transmission resource, and can enter the sleep state or execute Other operations, such as monitoring the PDCCH, can reduce the frequency of receiving the reference signal while avoiding adversely affecting other services.
  • the attribute of the power saving signal can also be the value of the bit field.
  • the meaning of different values is different. For example, when the bit field value is "0", it means that there is no reference signal on the transmission resource. ; When the value of the bit field is "1", it indicates that there is a reference signal on the transmission resource.
  • the value of the bit domain of the power saving signal may also be other values.
  • the network device may also configure (for example, a semi-static configuration) the transmission period of the reference signal, and the terminal device detects the power saving signal within a preset period based on the transmission period of the reference signal, thereby further reducing the power consumption of the terminal device.
  • the preset time period is the time period during which the network device sends the reference signal.
  • the terminal device may determine that a reference signal exists on the transmission resource; if the terminal device does not detect power consumption within the preset period of time If the signal is saved, the terminal device may determine that there is no reference signal on the transmission resource.
  • the terminal device when the terminal device detects the power saving signal, the terminal needs to process the reference signal, and detect the PDCCH detection in the corresponding connected mode DRX (connected mode DRX, C-DRX) cycle, and receive the corresponding PDSCH schedule.
  • the terminal device may determine that there is a reference signal on the transmission resource; if the terminal device is within the preset period of time If the power saving signal carrying the second sequence is detected within the period, the terminal device may determine that there is no reference signal on the transmission resource; if the terminal device does not detect the power saving signal carrying the first sequence within a preset period of time, nor When the power saving signal carrying the second sequence is detected, the terminal device may determine that there is no reference signal on the transmission resource.
  • the terminal when the terminal detects sequence 1, the terminal wakes up and uses the reference signal for time-frequency tracking or channel state measurement or beam training, and at the same time, the terminal processes the PDCCH within the C-DRX duration (on duration);
  • Sequence 2 the terminal determines that the network device does not send the reference signal, but the terminal determines that the network device will schedule data within the corresponding C-DRX cycle, so the terminal will detect the PDCCH within the corresponding C-DRX cycle;
  • the terminal does not detect the power saving signal, the terminal determines that the network device does not send the reference signal, nor does it schedule the terminal within the associated C-DRX cycle, and the terminal continues to sleep.
  • the time domain length of the power saving signal 1 is smaller than the time domain length of the reference signal.
  • the frequency domain length of the power saving signal 1 may be greater than, less than, or equal to the time domain length of the reference signal.
  • the time-frequency area occupied by the power saving signal 1 does not overlap or partially overlaps the time-frequency area occupied by the reference signal. As shown in FIG. 4, the shaded portion is the time-frequency area occupied by the power saving signal 1, and the unshaded rectangle indicates the time-frequency area occupied by the reference signal.
  • the frequency domain of the power saving signal 1 partially overlaps or completely overlaps or does not overlap with the frequency domain of the reference signal, and the start position of the time domain of the power saving signal 1 is before or before the start position of the time domain of the reference signal
  • the two start time domains are in the same position.
  • the shaded portion indicates the range of the time-frequency region occupied by the power-saving signal 1, but the power-saving signal 1 does not necessarily completely occupy the time-frequency region.
  • the power-saving signal 1 only occupies the time-frequency region Several resource units (resource, element, RE).
  • the reference signal may also occupy only a few REs.
  • the power saving signal 1 can multiplex part of the reference signal. Therefore, in this case, the power saving signal 1 can also be called a partial reference signal, and the reference signal occupying the area 2 can be called a full reference signal. .
  • reference signal refers to "complete reference signal”.
  • the time domain range of region 1 is symbol 0 to symbol 6, and the time domain range of region 2 is symbol 0 to symbol 13.
  • the power saving signal and the reference signal may be orthogonal Frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) can also be code division multiplexing. If the terminal device detects part of the reference signals on symbols 0 to 6, the terminal device determines that the power saving signal 1 has been received, and the terminal device may continue to receive the remaining reference signals on symbols 7 to 13, and the remaining reference signals The signal and the previously stored part of the reference signal are combined to perform corresponding operations, such as time-frequency offset tracking, channel state estimation, or beam training.
  • the terminal device determines that there are no reference signals on symbols 0 to 13 (ie, the transmission resources described in S320). Among them, the sequence of the power saving signal 1 on the symbols 0 to 6 may multiplex the partial sequence of the reference signal.
  • the time domain range of region 1 is symbol 0 to symbol 6, and the time domain range of region 2 is symbol 2 to symbol 13. If the terminal device detects part of the reference signals on symbols 0 to 6, the terminal device determines that the power saving signal 1 has been received, and the terminal device may continue to receive the remaining reference signals on symbols 7 to 13, and the remaining reference signals The signal and the previously stored part of the reference signal are combined to perform the corresponding operation. If the terminal device does not detect part of the reference signal on symbols 0 to 6, the terminal device determines that there is no reference signal on symbols 2 to 13. Among them, the sequence of the power saving signal 1 on the symbols 2 to 6 may multiplex the partial sequence of the reference signal.
  • whether the power saving signal 1 is detected is used as a basis for determining whether a reference signal exists on the transmission resource.
  • the terminal device may also determine whether there is a reference signal on the transmission resource according to the sequence of the power saving signal 1.
  • the power saving signal 1 as a wake-up signal can reduce resource overhead.
  • the power-saving signal 1 can multiplex a partial sequence of the reference signal, which can reduce the complexity of the terminal device detecting the power-saving signal 1.
  • the terminal device can also determine whether there is a reference signal on the transmission resource without waiting for the power saving signal 1 to be completely decoded.
  • the terminal device detects and parses a partial sequence on the symbols 0 to 2, and if the partial sequence belongs to the sequence of the power saving signal 1, the terminal device can determine that the power saving signal 1 is received; if the partial sequence If it does not belong to the sequence of the power saving signal 1, the terminal device can determine that the power saving signal 1 is not received, so that it can enter the sleep state in advance and reduce the power consumption.
  • the frequency domain width of the power saving signal 2 is smaller than the frequency domain width of the reference signal.
  • the time domain width of the power saving signal 2 may be greater than, less than, or equal to the time domain width of the reference signal.
  • the time-frequency area occupied by the power saving signal 2 does not overlap or partially overlaps the time-frequency area occupied by the reference signal. As shown in FIG. 5, the shaded portion is the time-frequency area occupied by the power saving signal 2, and the unshaded rectangle indicates the time-frequency area occupied by the reference signal.
  • the frequency domain of the power saving signal 2 partially overlaps or does not overlap the frequency domain of the reference signal
  • the time domain of the power saving signal 2 partially overlaps or does not overlap the time domain of the reference signal
  • the power saving signal The time domain start position of 2 is before the time domain start position of the reference signal.
  • the shaded portion indicates the range of the time-frequency region occupied by the power-saving signal 2, but the power-saving signal 2 does not necessarily completely occupy the time-frequency region.
  • the power-saving signal 2 only occupies the time-frequency region Of several REs.
  • the reference signal may also occupy only a few REs.
  • the power saving signal 2 can multiplex part of the reference signal. Therefore, in this case, the power saving signal 2 can also be called a partial reference signal, and the reference signal occupying the area 2 can be called a complete reference signal.
  • the frequency domain size of region 1 is a bandwidth corresponding to 24 resource blocks (resource blocks, RB), and the frequency domain size of region 2 is a bandwidth corresponding to 72 RBs. If the terminal device detects part of the reference signal on the bandwidth corresponding to the 24 RBs, the terminal device determines that the power saving signal 2 is received, and the terminal device may continue to receive the remaining reference signals on the bandwidth corresponding to 72 RBs. If the terminal device does not detect part of the reference signal on the bandwidth corresponding to the 24 RBs, the terminal device determines that there is no reference signal on the bandwidth corresponding to 72 RBs (that is, the transmission resources described in S320). Wherein, if the time-frequency region of the power-saving signal 2 partially overlaps with the time-frequency region of the reference signal, the sequence of the power-saving signal 2 on the bandwidth corresponding to the 24 RBs may multiplex the partial sequence of the reference signal.
  • whether the power saving signal 2 is detected is used as a basis for determining whether a reference signal exists on the transmission resource.
  • the terminal device may also determine whether the reference signal exists on the transmission resource according to the sequence of the power saving signal 2.
  • the power-saving signal 2 as a wake-up signal can reduce the power consumption of detecting the power-saving signal and reduce resource overhead.
  • the power-saving signal 2 can multiplex a partial sequence of the reference signal, which can reduce the complexity of the terminal device detecting the power-saving signal 2.
  • the time domain length of the power saving signal 3 is smaller than the time domain length of the reference signal, and the frequency domain width of the power saving signal 3 is smaller than the frequency domain width of the reference signal.
  • the time-frequency area occupied by the power saving signal 3 does not overlap or partially overlaps the time-frequency area occupied by the reference signal. As shown in FIG. 6, the shaded portion is the time-frequency area occupied by the power saving signal 3, and the unshaded rectangle indicates the time-frequency area occupied by the reference signal.
  • the frequency domain of the power saving signal 3 partially overlaps or does not overlap the frequency domain of the reference signal
  • the time domain of the power saving signal 3 partially overlaps or does not overlap the time domain of the reference signal
  • the power saving signal The time domain start position of 3 is before the time domain start position of the reference signal or the two time domain start positions are the same.
  • the shaded portion indicates the range of the time-frequency region occupied by the power-saving signal 3, but the power-saving signal 3 does not necessarily completely occupy the time-frequency region, for example, the power-saving signal 3 only occupies the time-frequency region Of several REs. Similarly, the reference signal may also occupy only a few REs.
  • the power saving signal 3 can multiplex part of the reference signal. Therefore, in this case, the power saving signal 3 can also be called a partial reference signal, and the reference signal occupying the area 2 can be called a complete reference signal.
  • the time domain range of region 1 is symbol 0 to symbol 6
  • the time domain range of region 2 is symbol 2 to symbol 13
  • the frequency domain size of region 1 is the bandwidth corresponding to 24 RBs
  • the frequency domain size of region 2 is 72 The bandwidth corresponding to each RB. If the terminal device detects and parses a partial sequence on symbols 0 to 1, and the partial sequence belongs to the sequence of the power saving signal 3, the terminal device can determine that the power saving signal 3 is received, and the terminal device can continue to Reference symbols are received on symbols 2 to 13 and on the bandwidth corresponding to 72 RBs.
  • the terminal device detects and parses a partial sequence on symbols 0 to 1, and the partial sequence does not belong to the power saving signal 3 sequence, or if the terminal device does not detect a partial reference signal on symbols 0 to 6 , Then the terminal device determines that there is no reference signal on symbols 2 to 13. Among them, the sequence of the power saving signal 3 on the symbols 2 to 6 may multiplex the partial sequence of the reference signal.
  • whether the power saving signal 3 is detected is used as a basis for determining whether there is a reference signal on the transmission resource.
  • the terminal device can also determine whether there is a reference signal on the transmission resource according to the sequence of the power saving signal 3.
  • the power saving signal 3 as the wake-up signal can reduce resource overhead.
  • the complexity of the terminal device detecting the power saving signal 3 can also be reduced.
  • FIG. 7 shows another example of the communication method provided by the present application.
  • FIG. 7 shows four connected mode DRX (connected mode DRX, C-DRX) cycles, and the network device configures the lengths of DRX-onDurationTimer and DRX-InactivityTimer for each C-DRX cycle in advance.
  • the large dashed box represents the time-frequency region occupied by the reference signal, and the network device does not send the reference signal in the time-frequency region;
  • the small dashed box represents the time-frequency region occupied by the wake-up signal, and the network device is not at this time
  • the wake-up signal is sent in the frequency area;
  • the shaded area indicates the time-frequency area occupied by the wake-up signal, and the network device sends the wake-up signal in the time-frequency area;
  • the solid line box containing the shaded area indicates the time-frequency area occupied by the reference signal, and the network The device sent a reference signal in this time-frequency region.
  • the network device is configured with 4 wake-up signal transmission opportunities (occasion) and 1 reference signal transmission opportunity.
  • the terminal device needs to detect the wake-up signal according to the pattern of the partial reference signal at each wake-up signal transmission opportunity.
  • the terminal device determines that the reference signal transmission time before C-DRX cycle 1 does not exist With reference to the signal, the terminal device can monitor the PDCCH and the physical downlink shared channel (PDSCH) during the wake-up phase of C-DRX cycle 1 according to the wake-up signal.
  • PDSCH physical downlink shared channel
  • the terminal device determines to stay in the sleep state, does not detect the reference signal, and does not monitor the PDCCH and PDSCH.
  • the terminal device can detect the wake-up signal according to the pattern of the complete reference signal, and perform time-frequency synchronization, channel estimation, or beam based on the reference signal after the wake-up signal is detected. Operations such as training.
  • Each wake-up signal shown in FIG. 7 is the power-saving signal 3, and optionally, the power-saving signal 1 and the power-saving signal 2 may also be used as the wake-up signal.
  • multiple terminal devices can multiplex the same sequence through methods such as code division or frequency shift.
  • the above mainly describes the communication method provided by the present application from the perspective of a terminal device.
  • the processing procedure of the network device has a corresponding relationship with the processing procedure of the terminal device.
  • the terminal device receives information from the network device, which means that the network device sends the information ;
  • the terminal device sends information to the network device, meaning that the network device receives the information from the terminal device. Therefore, even if the processing procedure of the network device is not explicitly stated in the individual places above, those skilled in the art can clearly understand the processing procedure of the network device based on the processing procedure of the terminal device.
  • the communication device includes a hardware structure and/or a software module corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driven hardware depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.
  • the present application may divide the functional unit of the communication device according to the above method example.
  • each function may be divided into various functional units, or two or more functions may be integrated into one processing unit.
  • the above integrated unit can be implemented in the form of hardware or software function unit. It should be noted that the division of the units in this application is schematic, and is only a division of logical functions. In actual implementation, there may be another division manner.
  • FIG. 8 shows a schematic structural diagram of a communication device provided by the present application.
  • the communication device 800 may be used to implement the method described in the above method embodiments.
  • the communication device 800 may be a chip, a network device, or a terminal device.
  • the communication device 800 includes one or more processors 801, and the one or more processors 801 may support the communication device 800 to implement the method in the method embodiment corresponding to FIG.
  • the processor 801 may be a general-purpose processor or a dedicated processor.
  • the processor 801 may be a central processing unit (CPU) or a baseband processor.
  • the baseband processor can be used to process communication data (for example, the power saving signal described above), and the CPU can be used to control communication devices (for example, network devices, terminal devices, or chips), execute software programs, and process software Program data.
  • the communication device 800 may further include a transceiving unit 805 to implement signal input (reception) and output (transmission).
  • the communication device 800 may be a chip, and the transceiver unit 805 may be an input and/or output circuit of the chip, or the transceiver unit 805 may be a communication interface of the chip, and the chip may serve as a terminal device or a network device or other wireless communication Components of the device.
  • the communication device 800 may include one or more memories 802 on which a program 804 is stored.
  • the program 804 may be executed by the processor 801 to generate instructions 803, so that the processor 801 executes the method described in the above method embodiments according to the instructions 803.
  • the memory 802 may also store data.
  • the processor 801 may also read the data stored in the memory 802, the data may be stored at the same storage address as the program 804, or the data may be stored at a different storage address than the program 804.
  • the processor 801 and the memory 802 may be set separately, or may be integrated together, for example, integrated on a single board or a system on chip (SOC).
  • SOC system on chip
  • the communication device 800 may further include a transceiver unit 805 and an antenna 806.
  • the transceiver unit 805 may be called a transceiver, a transceiver circuit, or a transceiver, and is used to implement the transceiver function of the communication device through the antenna 806.
  • the processor 801 is used to send a power saving signal to the terminal device through the transceiver unit 805 and the antenna 806.
  • the processor 801 is used to receive the power saving signal from the network device through the transceiver unit 805 and the antenna 806.
  • the processor 801 may be a CPU, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices For example, discrete gates, transistor logic devices or discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the present application also provides a computer program product which, when executed by the processor 801, implements the communication method described in any method embodiment of the present application.
  • the computer program product may be stored in the memory 802, for example, the program 804, which is finally converted into an executable object file that can be executed by the processor 801 after preprocessing, compiling, assembling, and linking.
  • the present application also provides a computer-readable storage medium on which a computer program is stored, which when executed by a computer implements the communication method described in any of the method embodiments of the present application.
  • the computer program may be a high-level language program or an executable target program.
  • the computer-readable storage medium is, for example, the memory 802.
  • the memory 802 may be a volatile memory or a non-volatile memory, or the memory 802 may include both a volatile memory and a non-volatile memory.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electronically Erasable programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (random access memory, RAM), which acts as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate synchronous dynamic random access memory double data SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • serial link DRAM SLDRAM
  • direct RAMbus RAM direct RAMbus RAM
  • FIG. 9 shows a schematic structural diagram of a terminal device provided by the present application.
  • the terminal device 900 may be applied to the system shown in FIG. 1 to implement the functions of the terminal device in the foregoing method embodiments.
  • FIG. 9 shows only the main components of the terminal device.
  • the terminal device 900 includes a processor, a memory, a control circuit, an antenna, and input/output devices.
  • the processor is mainly used for processing communication protocols and communication data, and for controlling the entire terminal device. For example, the processor receives power saving signals through the antenna and control circuit.
  • the memory is mainly used to store programs and data, such as storing communication protocols and data to be sent.
  • the control circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • the control circuit and the antenna can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • the input and output device is, for example, a touch screen or a keyboard, and is mainly used to receive data input by the user and output data to the user.
  • the processor can read the program in the memory, interpret and execute the instructions contained in the program, and process the data in the program.
  • the processor performs baseband processing on the information to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit processes the baseband signal after radio frequency processing to obtain the radio frequency signal, and passes the radio frequency signal through the antenna in the form of electromagnetic waves Send outside.
  • the electromagnetic wave carrying information ie, radio frequency signal
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into information And process the information.
  • FIG. 9 only shows one memory and one processor. In an actual terminal device, there may be multiple processors and multiple memories.
  • the memory may also be referred to as a storage medium or storage device, etc., which is not limited in this application.
  • the processor in FIG. 9 may integrate the functions of the baseband processor and the CPU.
  • the baseband processor and the CPU may also be independent processors, which may be implemented through a bus or other technologies. interconnected.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple CPUs to enhance its processing capability, and various components of the terminal device may be connected through various buses.
  • the baseband processor may also be called a baseband processing circuit or a baseband processing chip.
  • the CPU may also be called a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the memory in the form of a program, and the processor executes the program in the memory to realize the baseband processing function.
  • an antenna and a control circuit with a transceiver function can be regarded as the transceiver unit 901 of the terminal device 900, which is used to support the terminal device to implement the receiving function in the method embodiment, or to support the terminal device to implement the method embodiment Send function in.
  • the processor with a processing function is regarded as the processing unit 902 of the terminal device 900.
  • the terminal device 900 includes a transceiving unit 901 and a processing unit 902.
  • the transceiver unit may also be called a transceiver, a transceiver, a transceiver device, or the like.
  • the device used to implement the receiving function in the transceiver unit 901 can be regarded as a receiving unit, and the device used to implement the sending function in the transceiver unit 901 can be regarded as a sending unit, that is, the transceiver unit 901 includes a receiving unit and a sending unit,
  • the receiving unit may also be called a receiver, an input port, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • the processor 902 may be used to execute a program stored in the memory to control the transceiver unit 901 to receive signals and/or send signals to complete the functions of the terminal device in the foregoing method embodiments.
  • the function of the transceiver unit 901 can be considered to be implemented by a transceiver circuit or a dedicated transceiver chip.
  • FIG. 10 is a schematic structural diagram of a network device provided by the present application.
  • the network device may be, for example, a base station.
  • the base station can be applied to the system shown in FIG. 1 to implement the functions of the network device in the foregoing method embodiments.
  • the base station 1000 may include one or more radio frequency units, such as a remote radio unit (RRU) 1001 and at least one baseband unit (BBU) 1002.
  • RRU remote radio unit
  • BBU baseband unit
  • the BBU 1002 may include a distributed unit (distributed unit, DU), and may also include a DU and a centralized unit (CU).
  • DU distributed unit
  • CU centralized unit
  • the RRU 1001 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, and it may include at least one antenna 10011 and a radio frequency unit 10012.
  • RRU1001 is mainly used for the transmission and reception of radio frequency signals and the conversion of radio frequency signals and baseband signals, for example, for supporting the base station to implement the transmission function and the reception function in the method embodiment.
  • BBU1002 is mainly used for baseband processing and control of base stations.
  • RRU1001 and BBU1002 can be physically set together, or can be physically separated, that is, distributed base station.
  • BBU1002 can also be called a processing unit, mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, and so on.
  • the BBU1002 can be used to control the base station to perform the operation flow on the network device in the above method embodiments.
  • the BBU1002 can be composed of one or more boards, and multiple boards can jointly support a wireless access network of a single access standard (for example, a long term evolution (LTE) network), or can support different access standards separately. Wireless access network (such as LTE network and NR network).
  • the BBU 1002 also includes a memory 10021 and a processor 10022.
  • the memory 10021 is used to store necessary instructions and data.
  • the memory 10021 stores the power saving signal in the above method embodiment.
  • the processor 10022 is used to control the base station to perform necessary actions, for example, to control the base station to perform the operation flow in the foregoing method embodiment.
  • the memory 10021 and the processor 10022 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It is also possible that multiple boards share the same memory and processor. In addition, each board can also be provided with necessary circuits.
  • the disclosed system, device, and method may be implemented in other ways. For example, some features of the method embodiments described above can be ignored or not implemented.
  • the device embodiments described above are only schematic. The division of units is only a division of logical functions. In actual implementation, there may be another division manner. Multiple units or components may be combined or integrated into another system.
  • the coupling between the units or the coupling between the components may be direct coupling or indirect coupling.
  • the coupling includes electrical, mechanical, or other forms of connection.
  • the size of the sequence number of each process does not mean the order of execution, and the execution order of each process should be determined by its function and inherent logic, and should not be applied to the embodiments of this application
  • the implementation process constitutes no limitation.
  • system and “network” are often used interchangeably herein.
  • the term “and/or” in this article is just an association relationship that describes the related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, separate There are three cases of B.
  • the character “/” in this article generally indicates that the related objects before and after it are in an “or” relationship.

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Abstract

The present application provides a communication method. The method comprises: detecting a power consumption saving signal; and according to the detection result of the power consumption saving signal, determining whether there is a reference signal in a transmission resource, wherein the reference signal is a tracking reference signal, or a channel estimation reference signal, or a beam training reference signal. For example when it is needed that a terminal device reports channel quality, a network device can transmit the power consumption saving signal to the terminal device; after detecting the power consumption saving signal, the terminal device receives the channel estimation reference signal over the transmission resource, and performs channel estimation according to the channel estimation reference signal. Hence, the terminal device that executes the foregoing method can receive the reference signal when necessary, and reduces the frequency of receiving the reference signal, thereby reducing power consumption.

Description

通信方法和通信装置Communication method and communication device
本申请要求于2019年01月11日提交中国专利局、申请号为201910028824.2、申请名称为“通信方法和通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application requires the priority of a Chinese patent application filed on January 11, 2019 in the Chinese Patent Office, with application number 201910028824.2 and application name "Communication Method and Communication Device", the entire content of which is incorporated by reference in this application.
技术领域Technical field
本申请涉及通信领域，尤其涉及一种通信方法和通信装置。This application relates to the field of communications, and in particular to a communication method and a communication device.
背景技术Background technique
为了减小功耗，终端设备通常会在处于空闲态时进入休眠状态，每隔一段时间，终端设备会检测唤醒信号，若检测到唤醒信号，则终端设备由休眠状态进入苏醒状态，执行相关的处理，例如，同步、信道估计、波束训练等等。In order to reduce power consumption, the terminal device usually enters the sleep state when it is in the idle state. At intervals, the terminal device detects the wake-up signal. If the wake-up signal is detected, the terminal device enters the wake-up state from the sleep state and executes related Processing, for example, synchronization, channel estimation, beam training, etc.
为了减少资源消耗，一种唤醒终端设备的方法是通过参考信号唤醒终端设备，该参考信号即唤醒信号，终端设备被唤醒的同时基于该参考信号做相应的处理。然而，在一些场景中，终端设备并不一定需要执行与参考信号相关的处理。例如，不连续接收(discontinuous reception，DRX)周期通常小于跟踪参考信号(tracking reference signal，TRS)的发送周期，终端设备被唤醒后，可能直到下一个DRX周期都不需要进行同步；但是，网络设备通过TRS唤醒终端设备，使得终端设备需要在每个DRX周期内进行同步，从而导致终端设备的功耗增大。In order to reduce resource consumption, a method for waking up the terminal device is to wake up the terminal device through a reference signal, which is a wake-up signal, and the terminal device is woken up and performs corresponding processing based on the reference signal. However, in some scenarios, the terminal device does not necessarily need to perform processing related to the reference signal. For example, the discontinuous reception (DRX) period is usually less than the transmission period of the tracking reference signal (TRS). After the terminal device is woken up, synchronization may not be required until the next DRX cycle; however, the network device The TRS wakes up the terminal device, so that the terminal device needs to be synchronized in each DRX cycle, resulting in increased power consumption of the terminal device.
发明内容Summary of the invention
本申请提供了一种通信方法和通信装置，网络设备通过发送与参考信号具有关联关系的功耗节省信号，使得终端设备能够在必要的时候基于参考信号进行相应的处理，例如，进行同步处理，从而减小了终端设备的功耗。The present application provides a communication method and a communication apparatus. A network device transmits a power saving signal having an association relationship with a reference signal, so that the terminal device can perform corresponding processing based on the reference signal when necessary, for example, performing synchronization processing, Thereby reducing the power consumption of the terminal device.
第一方面，提供了一种通信方法，包括：检测功耗节省信号；根据对功耗节省信号的检测结果确定传输资源上是否存在参考信号，该参考信号为跟踪参考信号，或，信道估计参考信号，或，波束训练参考信号。In a first aspect, a communication method is provided, including: detecting a power saving signal; determining whether a reference signal exists on a transmission resource according to the detection result of the power saving signal, the reference signal is a tracking reference signal, or a channel estimation reference Signal, or, beam training reference signal.
例如，当网络设备需要终端设备上报信道质量时，可以向终端设备发送功耗节省信号，终端设备检测到功耗节省信号后，在传输资源上接收信道估计参考信号，根据信道估计参考信号进行信道估计。由此可见，执行上述方法的终端设备能够在必要的时候接收参考信号，减少了接收参考信号的频率，从而降低了功耗。For example, when the network device needs the terminal device to report the channel quality, it can send a power saving signal to the terminal device. After detecting the power saving signal, the terminal device receives the channel estimation reference signal on the transmission resource, and performs the channel according to the channel estimation reference signal. estimate. It can be seen that the terminal device performing the above method can receive the reference signal when necessary, reducing the frequency of receiving the reference signal, thereby reducing power consumption.
可选地，功耗节省信号的时域长度小于参考信号的时域长度，和/或，功耗节省信号的频域宽度小于参考信号的频域宽度。Optionally, the time domain length of the power saving signal is smaller than the time domain length of the reference signal, and/or, the frequency domain width of the power saving signal is smaller than the frequency domain width of the reference signal.
相比于现有技术将整个TRS作为唤醒信号唤醒终端设备的方案，本申请提供的功耗节省信号作为唤醒信号能够减少资源开销。当功耗节省信号的时频区域与参考信号的时频 区域部分重叠时，功耗节省信号可以复用参考信号的部分序列，能够减小终端设备检测功耗节省信号的复杂度。Compared with the solution of using the entire TRS as a wake-up signal to wake up a terminal device in the prior art, the power saving signal provided by the present application as a wake-up signal can reduce resource overhead. When the time-frequency region of the power-saving signal partially overlaps with the time-frequency region of the reference signal, the power-saving signal can multiplex a partial sequence of the reference signal, which can reduce the complexity of the terminal device detecting the power-saving signal.
可选地，根据是否检测到功耗节省信号确定传输资源上是否存在参考信号，包括：当检测到功耗节省信号时，确定传输资源上存在参考信号；或者，当未检测到功耗节省信号时，确定传输资源上不存在参考信号。Optionally, determining whether there is a reference signal on the transmission resource according to whether the power saving signal is detected includes: when the power saving signal is detected, determining that there is a reference signal on the transmission resource; or, when no power saving signal is detected When it is determined that there is no reference signal on the transmission resource.
基于上述方案，终端设备只需要确定是否检测到功耗节省信号，无需基于功耗节省信号承载的内容确定传输资源上是否存在参考信号，因此，上述方案具有简单易实施的特点。Based on the above solution, the terminal device only needs to determine whether the power saving signal is detected, and does not need to determine whether there is a reference signal on the transmission resource based on the content carried by the power saving signal. Therefore, the above solution has the characteristics of simple and easy implementation.
可选地，所述通信方法还包括：当确定传输资源上不存在参考信号时，保持休眠状态。Optionally, the communication method further includes: when it is determined that there is no reference signal on the transmission resource, maintaining the sleep state.
该方案中，终端设备未检测到功耗节省信号，因此，终端设备可以保持休眠状态，以减小功耗。In this solution, the terminal device does not detect the power saving signal, so the terminal device can remain in a sleep state to reduce power consumption.
可选地，根据是否检测到功耗节省信号确定传输资源上是否存在参考信号，包括：当检测到功耗节省信号时，根据功耗节省信号的属性确定传输资源上是否存在参考信号；或者，当未检测到功耗节省信号时，确定传输资源上不存在参考信号。Optionally, determining whether the reference signal exists on the transmission resource according to whether the power saving signal is detected includes: when the power saving signal is detected, determining whether the reference signal exists on the transmission resource according to the attribute of the power saving signal; or, When the power saving signal is not detected, it is determined that there is no reference signal on the transmission resource.
上述方案使得终端设备能够基于功耗节省信号做更多的处理，例如，基于功耗节省信号的属性确定传输资源上不存在参考信号后，还可以基于功耗节省信号监听其它信道(例如，物理下行控制信道)。The above solution enables the terminal device to do more processing based on the power saving signal. For example, after determining that there is no reference signal on the transmission resource based on the attribute of the power saving signal, it can also monitor other channels based on the power saving signal (for example, physical Downlink control channel).
可选地，根据功耗节省信号的属性确定传输资源上是否存在参考信号，包括：当功耗节省信号承载的序列为第一序列时，确定传输资源上存在参考信号；或者，当功耗节省信号承载的序列为第二序列时，确定传输资源上不存在参考信号。Optionally, determining whether a reference signal exists on the transmission resource according to the attribute of the power saving signal includes: when the sequence carried by the power saving signal is the first sequence, determining that there is a reference signal on the transmission resource; or, when the power saving When the sequence carried by the signal is the second sequence, it is determined that there is no reference signal on the transmission resource.
由于功耗节省信号可以复用参考信号的序列，因此，基于序列确定传输资源上是否存在参考信号能够降低终端设备检测功耗节省信号的复杂度。Since the power saving signal can multiplex the sequence of reference signals, determining whether there is a reference signal on the transmission resource based on the sequence can reduce the complexity of the terminal device detecting the power saving signal.
可选地，检测功耗节省信号，包括：在预设时段内检测功耗节省信号。Optionally, detecting the power saving signal includes: detecting the power saving signal within a preset time period.
网络设备还可以配置(例如，半静态配置)参考信号的发送周期，终端设备基于参考信号的发送周期在预设的时段内检测功耗节省信号，从而可以进一步减小终端设备的功耗。该预设的时段即网络设备发送参考信号的时段。The network device may also configure (for example, a semi-static configuration) the transmission period of the reference signal, and the terminal device detects the power saving signal within a preset period based on the transmission period of the reference signal, thereby further reducing the power consumption of the terminal device. The preset time period is the time period during which the network device sends the reference signal.
第二方面，本申请提供了另一种通信方法，包括：确定是否发送参考信号，参考信号为跟踪参考信号，或，信道估计参考信号，或，波束训练参考信号；In a second aspect, the present application provides another communication method, including: determining whether to send a reference signal, the reference signal is a tracking reference signal, or, a channel estimation reference signal, or, a beam training reference signal;
当确定发送参考信号时，发送功耗节省信号；或者，当确定不发送参考信号时，不发送功耗节省信号；When it is determined that the reference signal is transmitted, the power saving signal is transmitted; or, when it is determined that the reference signal is not transmitted, the power saving signal is not transmitted;
或者，or,
当确定发送参考信号时，发送第一属性的功耗节省信号；或者，当确定不发送参考信号时，发送第二属性的功耗节省信号；When it is determined that the reference signal is transmitted, the power saving signal of the first attribute is transmitted; or, when it is determined that the reference signal is not transmitted, the power saving signal of the second attribute is transmitted;
或者，or,
当确定发送参考信号时，发送第一属性的功耗节省信号；或者，当确定不发送参考信号但需要发送功耗节省信号时，发送第二属性的功耗节省信号；或者，当确定发送参考信号且不需要发送功耗节省信号时，不发送功耗节省信号。When it is determined that the reference signal is transmitted, the power saving signal of the first attribute is transmitted; or, when it is determined that the reference signal is not transmitted but the power saving signal needs to be transmitted, the power saving signal of the second attribute is transmitted; or, when it is determined that the reference is transmitted When the signal does not need to send the power saving signal, the power saving signal is not sent.
网络设备首先确定是否需要发送参考信号，当需要发送参考信号的时候向终端设备发送功耗节省信号，以指示终端设备接收参考信号；当不需要发送参考信号的时候，可以不发送功耗节省信号。The network device first determines whether a reference signal needs to be sent, and sends a power saving signal to the terminal device when the reference signal needs to be sent, to instruct the terminal device to receive the reference signal; when no reference signal needs to be sent, the power saving signal may not be sent .
网络设备也可以在需要发送参考信号的时候向终端设备发送第一属性的功耗节省信号，在不需要发送参考信号的时候向终端设备发送第二属性的功耗节省信号。The network device may also send the power saving signal of the first attribute to the terminal device when the reference signal needs to be sent, and send the power saving signal of the second attribute to the terminal device when the reference signal does not need to be sent.
上述方案能够减小了网络设备的信息开销和功耗。The above solution can reduce the information overhead and power consumption of network devices.
可选地，功耗节省信号的时域长度小于参考信号的时域长度，和/或，功耗节省信号的频域宽度小于参考信号的频域宽度。Optionally, the time domain length of the power saving signal is smaller than the time domain length of the reference signal, and/or, the frequency domain width of the power saving signal is smaller than the frequency domain width of the reference signal.
相比于现有技术将整个TRS作为唤醒信号唤醒终端设备的方案，本申请提供的功耗节省信号作为唤醒信号能够减少资源开销。当功耗节省信号的时频区域与参考信号的时频区域部分重叠时，功耗节省信号可以复用参考信号的部分序列，能够减小终端设备检测功耗节省信号的复杂度。Compared with the solution of using the entire TRS as a wake-up signal to wake up a terminal device in the prior art, the power saving signal provided by the present application as a wake-up signal can reduce resource overhead. When the time-frequency region of the power-saving signal partially overlaps with the time-frequency region of the reference signal, the power-saving signal can multiplex a partial sequence of the reference signal, which can reduce the complexity of the terminal device detecting the power-saving signal.
可选地，所述第一属性的功耗节省信号为承载第一序列的功耗节省信号，所述第二属性的功耗节省信号为承载第二序列的功耗节省信号，第一序列用于指示传输资源上存在参考信号，第二序列用于指示传输资源上不存在参考信号。Optionally, the power saving signal of the first attribute is a power saving signal carrying the first sequence, the power saving signal of the second attribute is a power saving signal carrying the second sequence, and the first sequence is used In order to indicate that there is a reference signal on the transmission resource, the second sequence is used to indicate that there is no reference signal on the transmission resource.
由于功耗节省信号可以复用参考信号的序列，因此，基于序列确定传输资源上是否存在参考信号能够降低终端设备检测功耗节省信号的复杂度。Since the power saving signal can multiplex the sequence of reference signals, determining whether there is a reference signal on the transmission resource based on the sequence can reduce the complexity of the terminal device detecting the power saving signal.
可选地，发送功耗节省信号，包括：在预设时段内发送功耗节省信号；或者，Optionally, sending the power saving signal includes: sending the power saving signal within a preset time period; or,
发送第一属性的功耗节省信号，包括：在预设时段内发送第一属性的功耗节省信号，或者，Sending the power saving signal of the first attribute includes: sending the power saving signal of the first attribute within a preset time period, or,
发送第二属性的功耗节省信号，包括：在预设时段内发送第二属性的功耗节省信号。Sending the power saving signal of the second attribute includes: sending the power saving signal of the second attribute within a preset time period.
网络设备可以配置(例如，半静态配置)参考信号的发送周期，使得终端设备基于参考信号的发送周期在预设的时段内检测功耗节省信号，从而可以进一步减小终端设备的功耗。该预设的时段即网络设备发送参考信号的时段。The network device may configure (for example, a semi-static configuration) the transmission period of the reference signal, so that the terminal device detects the power saving signal within a preset period based on the transmission period of the reference signal, so that the power consumption of the terminal device can be further reduced. The preset time period is the time period during which the network device sends the reference signal.
第三方面，本申请提供了一种通信装置，该装置可以是终端设备，也可以是终端设备内的芯片。该装置可以包括处理单元和收发单元。当该装置是终端设备时，该处理单元可以是处理器，该收发单元可以是收发器；该终端设备还可以包括存储单元，该存储单元可以是存储器；该存储单元用于存储指令，该处理单元执行该存储单元所存储的指令，以使该终端设备执行第一方面所述的方法。当该装置是终端设备内的芯片时，该处理单元可以是处理器，该收发单元可以是输入/输出接口、管脚或电路等；该处理单元执行存储单元所存储的指令，以使该终端设备执行第一方面所述的方法，该存储单元可以是该芯片内的存储单元(例如，寄存器、缓存等)，也可以是该终端设备内的位于该芯片外部的存储单元(例如，只读存储器、随机存取存储器等)。In a third aspect, the present application provides a communication device, which may be a terminal device or a chip in the terminal device. The device may include a processing unit and a transceiver unit. When the apparatus is a terminal device, the processing unit may be a processor, and the transceiving unit may be a transceiver; the terminal device may further include a storage unit, the storage unit may be a memory; the storage unit is used to store instructions, the processing The unit executes the instructions stored in the storage unit, so that the terminal device executes the method described in the first aspect. When the device is a chip in a terminal device, the processing unit may be a processor, and the transceiving unit may be an input/output interface, a pin, or a circuit, etc.; the processing unit executes instructions stored in the storage unit to enable the terminal The device performs the method described in the first aspect, and the storage unit may be a storage unit within the chip (eg, registers, cache, etc.), or may be a storage unit outside the chip within the terminal device (eg, read-only) Memory, random access memory, etc.).
第四方面，本申请提供了另一种通信装置，该装置可以是网络设备，也可以是网络设备内的芯片。该装置可以包括处理单元和收发单元。当该装置是网络设备时，该处理单元可以是处理器，该收发单元可以是收发器；该网络设备还可以包括存储单元，该存储单元可以是存储器；该存储单元用于存储指令，该处理单元执行该存储单元所存储的指令，以使该网络设备执行第二方面所述的方法。当该装置是网络设备内的芯片时，该处理单元可以是处理器，该收发单元可以是输入/输出接口、管脚或电路等；该处理单元执行存储单元所存储的指令，以使该网络设备执行第二方面所述的方法，该存储单元可以是该芯片内的存储单元(例如，寄存器、缓存等)，也可以是该网络设备内的位于该芯片外部的存储单元(例如，只读存储器、随机存取存储器等)。In a fourth aspect, the present application provides another communication device, which may be a network device or a chip in the network device. The device may include a processing unit and a transceiver unit. When the apparatus is a network device, the processing unit may be a processor, and the transceiver unit may be a transceiver; the network device may further include a storage unit, which may be a memory; the storage unit is used to store instructions, the processing The unit executes the instructions stored by the storage unit, so that the network device performs the method described in the second aspect. When the device is a chip in a network device, the processing unit may be a processor, and the transceiver unit may be an input/output interface, a pin, or a circuit, etc.; the processing unit executes instructions stored in the storage unit to enable the network The device performs the method described in the second aspect. The storage unit may be a storage unit within the chip (eg, registers, cache, etc.), or a storage unit outside the chip within the network device (eg, read-only) Memory, random access memory, etc.).
第五方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质中存储了计算机程序，该计算机程序被处理器执行时，使得处理器执行第一方面所述的方法。In a fifth aspect, the present application provides a computer-readable storage medium in which a computer program is stored. When the computer program is executed by a processor, the processor is caused to execute the method described in the first aspect.
第六方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质中存储了计算机程序，该计算机程序被处理器执行时，使得处理器执行第二方面所述的方法。In a sixth aspect, the present application provides a computer-readable storage medium in which a computer program is stored. When the computer program is executed by a processor, the processor is caused to perform the method described in the second aspect.
第七方面，本申请提供了一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码被处理器运行时，使得处理器执行第一方面所述的方法。According to a seventh aspect, the present application provides a computer program product, the computer program product comprising: computer program code, when the computer program code is executed by a processor, the processor is caused to execute the method described in the first aspect.
第八方面，本申请提供了一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码被处理器运行时，使得处理器执行第二方面所述的方法。In an eighth aspect, the present application provides a computer program product, the computer program product comprising: computer program code, when the computer program code is executed by a processor, causing the processor to execute the method described in the second aspect.
附图说明BRIEF DESCRIPTION
图1是一种适用于本申请的通信***的示意图；1 is a schematic diagram of a communication system suitable for this application;
图2是适用于本申请的一种DRX循环的示意图；2 is a schematic diagram of a DRX cycle applicable to this application;
图3是本申请提供的一种通信方法的示意图；3 is a schematic diagram of a communication method provided by this application;
图4是本申请提供的一种功耗节省信号占用的时频资源的示意图；4 is a schematic diagram of a time-frequency resource occupied by a power saving signal provided by this application;
图5是本申请提供的另一种功耗节省信号占用的时频资源的示意图；5 is a schematic diagram of another power-saving time-frequency resource occupied by a signal provided by this application;
图6是本申请提供的再一种功耗节省信号占用的时频资源的示意图；6 is a schematic diagram of another time-frequency resource occupied by a power saving signal provided by this application;
图7示出了本申请提供的通信方法的另一个示例的示意图；7 shows a schematic diagram of another example of the communication method provided by the present application;
图8是本申请提供的一种通信装置的示意图；8 is a schematic diagram of a communication device provided by this application;
图9是本申请提供的一种终端设备的示意图；9 is a schematic diagram of a terminal device provided by this application;
图10是本申请提供的一种网络设备的示意图。10 is a schematic diagram of a network device provided by this application.
具体实施方式detailed description
下面将结合附图，对本申请中的技术方案进行描述。The technical solutions in this application will be described below with reference to the drawings.
首先介绍本申请的应用场景，图1是一种适用于本申请的通信***的示意图。First, the application scenario of the present application is introduced. FIG. 1 is a schematic diagram of a communication system suitable for the present application.
通信***100包括网络设备110和终端设备120。终端设备120通过电磁波与网络设备110进行通信。The communication system 100 includes a network device 110 and a terminal device 120. The terminal device 120 communicates with the network device 110 through electromagnetic waves.
在本申请中，终端设备120可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备，例如，第三代合作伙伴计划(3 rd generation partnership project，3GPP)所定义的用户设备(user equipment，UE)，移动台(mobile station，MS)，软终端，家庭网关，机顶盒等等。 In the present application, the terminal device 120 may include a variety of handheld devices, in-vehicle device having a wireless communication function, wearable device, computing device, or other processing device connected to a wireless modem, for example, the Third Generation Partnership Project (3 rd Generation partnership project (3GPP) defined user equipment (UE), mobile station (mobile station, MS), soft terminal, home gateway, set-top box, etc.
网络设备110可以是3GPP所定义的基站，例如，5G通信***中的基站(gNB)。网络设备110也可以是非3GPP(non-3GPP)的接入网设备，例如接入网关(access gateway，AGF)。网络设备110还可以是中继站、接入点、车载设备、可穿戴设备以及其它类型的设备。The network device 110 may be a base station defined by 3GPP, for example, a base station (gNB) in a 5G communication system. The network device 110 may also be a non-3GPP (non-3GPP) access network device, such as an access gateway (access gateway (AGF)). The network device 110 may also be a relay station, an access point, an in-vehicle device, a wearable device, and other types of devices.
通信***100仅是举例说明，适用本申请的通信***不限于此，例如，通信***100中包含的网络设备和终端设备的数量还可以是其它的数量。The communication system 100 is only an example, and the communication system to which the present application is applied is not limited thereto. For example, the number of network devices and terminal devices included in the communication system 100 may be other numbers.
处于连接态的终端设备120会不断尝试接收物理下行控制信道(physical downlink control channel，PDCCH)，为了降低功耗，终端设备120可以启动一个非激活定时器(inactive timer)，一旦接收到PDCCH承载的下行控制信息(downlink control information， DCI)调度新传的数据，终端设备120就会重置非激活定时器。The terminal device 120 in the connected state will continuously try to receive the physical downlink control channel (physical downlink control channel, PDCCH). In order to reduce power consumption, the terminal device 120 may start an inactive timer (inactive timer). The downlink control information (downlink control information, DCI) schedules the newly transmitted data, and the terminal device 120 resets the inactive timer.
在DRX机制中，如果终端设备处于激活态，终端设备会持续监听PDCCH。当DRX持续时间定时器(DRX-onDurationTimer)、DRX非激活态定时器(DRX-InactivityTimer)、DRX下行重传定时器(DRX-RetransmissionTimerDL)和DRX上行重传定时器(DRX-RetransmissionTimerUL)中任一定时器在运行时，终端设备处于激活态。其中，DRX-onDurationTimer为配置了DRX周期的终端设备在满足一定条件时启动，在DRX-onDurationTimer计时期间，终端设备处于激活态。DRX-InactivityTimer为终端设备收到PDCCH指示下行或上行新传时启动，在DRX-InactivityTimer计时期间，终端设备处于激活态。在下行传输过程中，当终端设备向网络设备发送完携带混合式自动重传请求(hybrid automatic repeat request，HARQ)反馈信息的物理上行控制信道(physical uplink control channel，PUCCH)或者物理上行共享信道(physical uplink shared channel，PUSCH)时，会启动下行HARQ往返时间定时器(HARQ-RTT-TimerDL)，HARQ-RTT-TimerDL表示网络设备并不会立即有重传发生，因此HARQ-RTT-TimerDL计时期间，允许终端设备进入非激活态，即可以不监听PDCCH。当HARQ-RTT-TimerDL超时时，若终端设备存在解码失败的数据，则启动DRX-RetransmissionTimerDL。在DRX-RetransmissionTimerDL计时期间，终端设备处于激活态。In the DRX mechanism, if the terminal device is in the activated state, the terminal device will continuously monitor the PDCCH. When DRX duration timer (DRX-onDurationTimer), DRX inactivity timer (DRX-InactivityTimer), DRX downlink retransmission timer (DRX-RetransmissionTimerDL) and DRX uplink retransmission timer (DRX-RetransmissionTimerUL) any one When the timer is running, the terminal device is in the activated state. Wherein, DRX-onDurationTimer is started when the terminal device configured with the DRX cycle meets certain conditions, and during the timing of the DRX-onDurationTimer, the terminal device is in an activated state. The DRX-InactivityTimer is started when the terminal device receives a PDCCH indication of a new downlink or uplink transmission. During the timing of the DRX-InactivityTimer, the terminal device is in an active state. In the downlink transmission process, when the terminal device sends the physical uplink control channel (PUCCH) or physical uplink shared channel (hybrid automatic repeat request, HARQ) feedback information to the network device, the physical uplink shared channel (PUCCH) physical link (shared channel, PUSCH), it will start the downlink HARQ round-trip time timer (HARQ-RTT-TimerDL), HARQ-RTT-TimerDL means that the network device will not immediately retransmit occur, so HARQ-RTT-TimerDL timing period , Allowing the terminal device to enter the inactive state, that is, it may not monitor the PDCCH. When HARQ-RTT-TimerDL times out, if there is data that fails to decode in the terminal device, DRX-RetransmissionTimerDL is started. During the timing of DRX-RetransmissionTimerDL, the terminal device is in the activated state.
下面为DRX机制下处于无线资源控制(resource resource control，RRC)连接态的终端设备的下行传输过程。The following is the downlink transmission process of the terminal device in the radio resource control (resource, resource, control, RRC) connected state under the DRX mechanism.
步骤1：在DRX-onDurationTimer计时期间，终端设备监听PDCCH。Step 1: During the DRX-onDurationTimer timing, the terminal device monitors the PDCCH.
步骤2：若终端设备在DRX-onDurationTimer计时期间检测到PDCCH指示下行新传，则启动DRX-InactivityTimer。一次数据的新传表示一个HARQ进程的开始。Step 2: If the terminal device detects that the PDCCH indicates a new downlink transmission during the DRX-onDurationTimer timing, it starts the DRX-InactivityTimer. A new transmission of data indicates the start of a HARQ process.
步骤3：终端设备解码PDCCH中的下行控制信息(downlink control information，DCI)，并基于DCI接收PDSCH。Step 3: The terminal device decodes downlink control information (downlink control information, DCI) in the PDCCH, and receives the PDSCH based on the DCI.
步骤4：终端设备在PUCCH或者PUSCH中携带HARQ反馈信息发送给网络设备。Step 4: The terminal device carries HARQ feedback information in the PUCCH or PUSCH and sends it to the network device.
步骤5：终端设备在发送完携带HARQ反馈信息的PUCCH或者PUSCH的所有符号之后的第一个符号启动对应HARQ进程的HARQ-RTT-TimerDL。Step 5: The terminal device starts the HARQ-RTT-TimerDL corresponding to the HARQ process after the first symbol after sending all symbols of the PUCCH or PUSCH carrying HARQ feedback information.
步骤6：当HARQ-RTT-TimerDL超时，若之前的PDSCH存在译码失败的传输块(transport block，TB)，终端设备将启动DRX-RetransmissionTimerDL，在DRX-RetransmissionTimerDL计时期间，并进入步骤7。若之前的PDSCH全部译码成功，终端设备不启动DRX-RetransmissionTimerDL。Step 6: When HARQ-RTT-TimerDL times out, if there is a transport block (TB) in the previous PDSCH that failed to be decoded, the terminal device will start DRX-RetransmissionTimerDL. During the timing of DRX-RetransmissionTimerDL, proceed to step 7. If all the previous PDSCHs are successfully decoded, the terminal device does not start DRX-RetransmissionTimerDL.
步骤7：在DRX-RetransmissionTimerDL计时期间，终端设备处于激活态并开始盲检PDCCH。若在DRX-RetransmissionTimerDL计时期间终端设备检测到重传DCI，则关闭DRX-RetransmissionTimerDL，并基于重传DCI接收PDSCH。在解码PDSCH之后，执行步骤4至步骤7。Step 7: During the timing of DRX-RetransmissionTimerDL, the terminal device is in the activated state and starts to blindly detect the PDCCH. If the terminal device detects retransmission DCI during DRX-RetransmissionTimerDL timing, it closes DRX-RetransmissionTimerDL and receives PDSCH based on the retransmission DCI. After decoding the PDSCH, steps 4 to 7 are performed.
目前，HARQ-RTT-TimerDL的长度由网络设备配置。具体的，HARQ-RTT-TimerDL的长度和网络设备处理HARQ反馈信息的时间K3有关，其中K3表示从网络设备接收到终端设备发来的某个HARQ进程的HARQ反馈信息之后处理HARQ反馈信息，确定重传数据的时间。Currently, the length of HARQ-RTT-TimerDL is configured by the network device. Specifically, the length of HARQ-RTT-TimerDL is related to the time K3 when the network device processes the HARQ feedback information, where K3 indicates that the HARQ feedback information of a certain HARQ process sent from the terminal device is received from the network device, and then the HARQ feedback information is processed to determine Time to retransmit data.
DRX循环如图2所示。需要注意的是，终端设备120可能在DRX-onDurationTimer 启动前的一段时间(例如，几个时隙)内被唤醒进行时频同步，以防止终端设备120因为长时间休眠造成时间和频域出现偏差；同时UE也可以先尝试接收***消息，以防止终端设备120从一个小区移动到另一个小区后，另一个小区的***消息是和原小区不一样的。The DRX cycle is shown in Figure 2. It should be noted that the terminal device 120 may be awakened for time-frequency synchronization within a period of time (for example, several time slots) before the DRX-onDurationTimer is started, to prevent the terminal device 120 from deviating in time and frequency domain due to long sleep At the same time, the UE may also try to receive the system message first to prevent the terminal device 120 from moving from one cell to another cell, the system message of the other cell is different from the original cell.
终端设备120需要定期从休眠状态进入苏醒状态监听网络设备110发送的信号，例如，监听TRS并根据接收到的TRS进行时频同步，但并不是每个苏醒阶段都有需要进行时频同步。为此，本申请提供了一种通信方法300，通信方法300可以应用于图1所示的通信***，例如，可以由终端设备120执行，也可以由终端设备120中的芯片执行。为了简洁，下文所述的“终端设备”和“网络设备”不再附带附图标记。The terminal device 120 needs to periodically monitor the signals sent by the network device 110 from the sleep state to the awake state, for example, to monitor the TRS and perform time-frequency synchronization according to the received TRS, but time-frequency synchronization is not required for each wake-up stage. To this end, the present application provides a communication method 300. The communication method 300 may be applied to the communication system shown in FIG. 1, for example, may be executed by the terminal device 120, or may be executed by a chip in the terminal device 120. For the sake of brevity, the "terminal equipment" and "network equipment" described below are no longer accompanied by reference signs.
如图3所示，方法300包括：As shown in FIG. 3, the method 300 includes:
S310，检测功耗节省(power saving)信号。S310. Detect a power saving signal.
功耗节省信号可以是唤醒信号(wakeup signal，WUS)，也可以是睡眠信号(go-to-sleep signal，GTS)。The power saving signal may be a wakeup signal (WUS) or a sleep signal (go-to-sleep signal, GTS).
S320，根据对所述功耗节省信号的检测结果确定传输资源上是否存在所述参考信号，所述参考信号为跟踪参考信号，或，信道估计参考信号，或，波束训练参考信号。S320: Determine whether the reference signal exists on the transmission resource according to the detection result of the power saving signal. The reference signal is a tracking reference signal, or a channel estimation reference signal, or a beam training reference signal.
DRX循环的时长通常是固定的或半静态配置的，并不是每个苏醒阶段均有需要终端设备处理的任务，因此，若网络设备需要在苏醒阶段内指示终端设备处理任务(例如，接收信息)，则网络设备会向终端设备发送功耗节省信号，终端设备接收到功耗节省信号后进行相应的操作；若苏醒阶段内不需要终端设备处理任务，网络设备可以不发送功耗节省信号，终端设备未接收到功耗节省信号可以进入休眠状态，以节省功耗。The duration of the DRX cycle is usually fixed or semi-statically configured, not every task that needs to be processed by the terminal device during the wake-up phase. Therefore, if the network device needs to instruct the terminal device to process the task during the wake-up phase (for example, receive information) , The network device will send a power saving signal to the terminal device, and the terminal device will perform the corresponding operation after receiving the power saving signal; if the terminal device does not need to process tasks during the wake-up phase, the network device may not send the power saving signal, the terminal The device can enter the sleep state without receiving the power saving signal to save power.
例如，功耗节省信号与参考信号存在关联关系，若终端设备检测到功耗节省信号，则终端设备确定传输资源上存在参考信号，可以在该传输资源上接收参考信号，以便于基于该参考信号进行相应的操作；若终端设备未检测到功耗节省信号，则终端设备确定传输资源上不存在参考信号，可以进入休眠状态以节省功耗，或者，也可以进行其它操作，其它操作例如是监听PDCCH。For example, there is an association relationship between the power saving signal and the reference signal. If the terminal device detects the power saving signal, the terminal device determines that there is a reference signal on the transmission resource, and can receive the reference signal on the transmission resource to facilitate the reference signal based Perform the corresponding operation; if the terminal device does not detect the power saving signal, the terminal device determines that there is no reference signal on the transmission resource, and can enter the sleep state to save power consumption, or can perform other operations, such as monitoring PDCCH.
上述功耗节省信号与参考信号之间的关联关系可以由通信协议定义，也可以由网络设备配置。类似地，上述传输资源可以由通信协议定义，也可以由网络设备配置。The association relationship between the power saving signal and the reference signal may be defined by a communication protocol, or may be configured by a network device. Similarly, the above transmission resources may be defined by the communication protocol or configured by the network device.
上述参考信号可以是TRS、信道估计参考信号或者波束训练参考信号。The above reference signal may be a TRS, a channel estimation reference signal or a beam training reference signal.
当网络设备确定终端设备需要进行时频同步时，可以向终端设备发送功耗节省信号，终端设备检测到功耗节省信号后，在传输资源上接收TRS，根据TRS进行时频同步。When the network device determines that the terminal device needs to perform time-frequency synchronization, it can send a power saving signal to the terminal device. After detecting the power saving signal, the terminal device receives TRS on the transmission resource and performs time-frequency synchronization according to the TRS.
当网络设备需要终端设备上报信道质量时，可以向终端设备发送功耗节省信号，终端设备检测到功耗节省信号后，在传输资源上接收信道估计参考信号，根据信道估计参考信号进行信道估计。When the network device needs the terminal device to report the channel quality, it can send a power saving signal to the terminal device. After detecting the power saving signal, the terminal device receives the channel estimation reference signal on the transmission resource and performs channel estimation according to the channel estimation reference signal.
当网络设备需要终端设备训练波束时，可以向终端设备发送功耗节省信号，终端设备检测到功耗节省信号后，在传输资源上接收波束训练参考信号，根据波束训练参考信号进行波束训练。例如，参考信号是波束训练信号的例子，波束训练信号，用于终端设备训练得到最佳接收波束，当终端设备检测到功耗节省信号时，确定网络设备会发送波束训练波参考信号，从而终端设备使用波束训练参考信号找到接收后续信号或信道的接收波束。When the network device needs the terminal device to train a beam, it can send a power saving signal to the terminal device. After detecting the power saving signal, the terminal device receives the beam training reference signal on the transmission resource and performs beam training according to the beam training reference signal. For example, the reference signal is an example of a beam training signal. The beam training signal is used for terminal device training to obtain the best receiving beam. When the terminal device detects a power saving signal, it is determined that the network device will send a beam training wave reference signal, so that the terminal The device uses the beam training reference signal to find the receive beam that receives the subsequent signal or channel.
时频同步、信道估计以及波束训练的具体方法可以按照现有技术中的相关方法进行，为了简洁，本申请不再赘述。The specific methods of time-frequency synchronization, channel estimation, and beam training can be performed according to the related methods in the prior art. For brevity, this application will not repeat them here.
由此可见，应用方法300的终端设备能够在必要的时候接收参考信号，减少了接收参考信号的频率，从而降低了功耗。It can be seen that the terminal device applying the method 300 can receive the reference signal when necessary, reducing the frequency of receiving the reference signal, thereby reducing power consumption.
对于网络设备来说，网络设备首先确定是否需要发送参考信号，当需要发送参考信号的时候向终端设备发送功耗节省信号，以指示终端设备接收参考信号；当不需要发送参考信号的时候，可以不发送功耗节省信号，从而减小了网络设备的信息开销和功耗。For a network device, the network device first determines whether a reference signal needs to be sent. When a reference signal needs to be sent, a power saving signal is sent to the terminal device to instruct the terminal device to receive the reference signal; when a reference signal is not needed, it can be No power saving signal is sent, thereby reducing the information overhead and power consumption of network devices.
上文给出了终端设备根据是否检测到功耗节省信号确定传输资源上是否存在参考信号的示例，终端设备也可以根据功耗节省信号的属性来确定传输资源上是否存在参考信号。The above gives an example in which the terminal device determines whether a reference signal exists on the transmission resource according to whether the power saving signal is detected. The terminal device may also determine whether the reference signal exists on the transmission resource according to the attribute of the power saving signal.
例如，当网络设备认为终端设备需要基于参考信号进行相应的处理，而确定发送参考信号时，网络设备可以发送承载第一序列的功耗节省信号；当网络设备认为资源不够无法发送参考信号或者认为终端当前不需要使用参考信号时，网络确定不发送参考信号，网络设备可以发送承载第二序列的功耗节省信号。For example, when the network device determines that the terminal device needs to perform corresponding processing based on the reference signal and determines to send the reference signal, the network device may send a power saving signal that carries the first sequence; when the network device considers that the resources are insufficient, it cannot send the reference signal or When the terminal does not currently need to use the reference signal, the network determines not to send the reference signal, and the network device may send a power saving signal carrying the second sequence.
终端设备接收到功耗节省信号后，根据不同的序列确定传输资源上是否存在参考信号。若功耗节省信号承载的序列是第一序列，终端设备确定传输资源上存在参考信号，可以在该传输资源上接收参考信号；若功耗节省信号承载的序列是第二序列，终端设备确定传输资源上不存在参考信号，此时，终端设备可能不会在传输资源上接收参考信号，进行时频同步或信道状态估计或者接收波束训练，但是终端仍然需要唤醒监听PDCCH，从而可以在减小接收参考信号的频率的同时避免对其它业务造成不利影响。After receiving the power saving signal, the terminal device determines whether there is a reference signal on the transmission resource according to different sequences. If the sequence carried by the power saving signal is the first sequence, the terminal device determines that there is a reference signal on the transmission resource and can receive the reference signal on the transmission resource; if the sequence carried by the power saving signal is the second sequence, the terminal device determines the transmission There is no reference signal on the resource. At this time, the terminal device may not receive the reference signal on the transmission resource to perform time-frequency synchronization or channel state estimation or receive beam training, but the terminal still needs to wake up to monitor the PDCCH, which can reduce the reception Reference the frequency of the signal while avoiding adverse effects on other services.
需要说明的是，对于上述方案，若终端设备未检测到承载第一序列或第二序列的功耗节省信号，终端设备也会确定传输资源上不存在参考信号，可以进入休眠状态，也可以执行其它操作，例如监听PDCCH，从而可以在减小接收参考信号的频率的同时避免对其它业务造成不利影响。It should be noted that, for the above solution, if the terminal device does not detect the power saving signal carrying the first sequence or the second sequence, the terminal device will also determine that there is no reference signal on the transmission resource, and can enter the sleep state or execute Other operations, such as monitoring the PDCCH, can reduce the frequency of receiving the reference signal while avoiding adversely affecting other services.
功耗节省信号的属性还可以是比特域的取值，对于相同的比特域，取值不同代表的含义也不同，例如，比特域取值为“0”时，表示传输资源上不存在参考信号；比特域取值为“1”时，表示传输资源上存在参考信号。功耗节省信号的比特域的取值还可以是其它值。The attribute of the power saving signal can also be the value of the bit field. For the same bit field, the meaning of different values is different. For example, when the bit field value is "0", it means that there is no reference signal on the transmission resource. ; When the value of the bit field is "1", it indicates that there is a reference signal on the transmission resource. The value of the bit domain of the power saving signal may also be other values.
网络设备还可以配置(例如，半静态配置)参考信号的发送周期，终端设备基于参考信号的发送周期在预设的时段内检测功耗节省信号，从而可以进一步减小终端设备的功耗。该预设的时段即网络设备发送参考信号的时段。The network device may also configure (for example, a semi-static configuration) the transmission period of the reference signal, and the terminal device detects the power saving signal within a preset period based on the transmission period of the reference signal, thereby further reducing the power consumption of the terminal device. The preset time period is the time period during which the network device sends the reference signal.
作为一个可选的实施方案，若终端设备在预设的时段内检测到功耗节省信号，则终端设备可以确定传输资源上存在参考信号；若终端设备在预设的时段内未检测到功耗节省信号，则终端设备可以确定传输资源上不存在参考信号。作为一种例子，当终端设备检测到功耗节省信号时，终端需要处理参考信号，并且检测对应连接模式DRX(connected mode DRX，C-DRX)循环内的PDCCH检测，以及接收对应的PDSCH调度。As an optional embodiment, if the terminal device detects a power saving signal within a preset period of time, the terminal device may determine that a reference signal exists on the transmission resource; if the terminal device does not detect power consumption within the preset period of time If the signal is saved, the terminal device may determine that there is no reference signal on the transmission resource. As an example, when the terminal device detects the power saving signal, the terminal needs to process the reference signal, and detect the PDCCH detection in the corresponding connected mode DRX (connected mode DRX, C-DRX) cycle, and receive the corresponding PDSCH schedule.
作为另一个可选的实施方案，若终端设备在预设的时段内检测到承载第一序列的功耗节省信号，则终端设备可以确定传输资源上存在参考信号；若终端设备在预设的时段内检测到承载第二序列的功耗节省信号，则终端设备可以确定传输资源上不存在参考信号；若终端设备在预设的时段内未检测到承载第一序列的功耗节省信号，也未检测到承载第二序列的功耗节省信号，则终端设备可以确定传输资源上不存在参考信号。作为一种例子，当终端检测到序列1时，终端唤醒，并使用所述参考信号进行时频跟踪或者信道状态测量或 者波束训练，同时终端处理C-DRX持续时间(on duration)内的PDCCH；当终端检测到序列2时，终端确定网络设备不发送所述参考信号，但是终端确定网络设备会在对应的C-DRX循环内调度数据，因此终端会在对应的C-DRX循环内检测PDCCH；当终端没有检测到功耗节省信号时，终端确定网络设备不发送所述参考信号，也不会在关联的C-DRX循环内调度所述终端，终端继续休眠。As another optional embodiment, if the terminal device detects the power saving signal carrying the first sequence within a preset period of time, the terminal device may determine that there is a reference signal on the transmission resource; if the terminal device is within the preset period of time If the power saving signal carrying the second sequence is detected within the period, the terminal device may determine that there is no reference signal on the transmission resource; if the terminal device does not detect the power saving signal carrying the first sequence within a preset period of time, nor When the power saving signal carrying the second sequence is detected, the terminal device may determine that there is no reference signal on the transmission resource. As an example, when the terminal detects sequence 1, the terminal wakes up and uses the reference signal for time-frequency tracking or channel state measurement or beam training, and at the same time, the terminal processes the PDCCH within the C-DRX duration (on duration); When the terminal detects Sequence 2, the terminal determines that the network device does not send the reference signal, but the terminal determines that the network device will schedule data within the corresponding C-DRX cycle, so the terminal will detect the PDCCH within the corresponding C-DRX cycle; When the terminal does not detect the power saving signal, the terminal determines that the network device does not send the reference signal, nor does it schedule the terminal within the associated C-DRX cycle, and the terminal continues to sleep.
上文详细描述了终端设备如何基于功耗节省信号接收参考信号的示例，本申请还提供了三种新的功耗节省信号。The above describes in detail examples of how the terminal device receives the reference signal based on the power saving signal, and the present application also provides three new power saving signals.
功耗节省信号1。Power saving signal 1.
功耗节省信号1的时域长度小于参考信号的时域长度。功耗节省信号1的频域长度可以大于、小于或等于参考信号的时域长度。功耗节省信号1占用的时频区域与参考信号占用的时频区域不重叠或者部分重叠。如图4所示，阴影部分为功耗节省信号1占用的时频区域，无阴影的矩形表示参考信号占用的时频区域。其中，功耗节省信号1的频域与参考信号的频域部分重叠或者完全重叠或者不重叠，并且，功耗节省信号1的时域起始位置位于参考信号的时域起始位置之前或者该两个起始时域位置相同。The time domain length of the power saving signal 1 is smaller than the time domain length of the reference signal. The frequency domain length of the power saving signal 1 may be greater than, less than, or equal to the time domain length of the reference signal. The time-frequency area occupied by the power saving signal 1 does not overlap or partially overlaps the time-frequency area occupied by the reference signal. As shown in FIG. 4, the shaded portion is the time-frequency area occupied by the power saving signal 1, and the unshaded rectangle indicates the time-frequency area occupied by the reference signal. Wherein, the frequency domain of the power saving signal 1 partially overlaps or completely overlaps or does not overlap with the frequency domain of the reference signal, and the start position of the time domain of the power saving signal 1 is before or before the start position of the time domain of the reference signal The two start time domains are in the same position.
需要说明的是，阴影部分表示功耗节省信号1占用的时频区域的范围，但功耗节省信号1并不一定完全占用该时频区域，例如，功耗节省信号1仅占用该时频区域的几个资源单元(resource element，RE)。类似地，参考信号也可以是仅占用几个RE。It should be noted that the shaded portion indicates the range of the time-frequency region occupied by the power-saving signal 1, but the power-saving signal 1 does not necessarily completely occupy the time-frequency region. For example, the power-saving signal 1 only occupies the time-frequency region Several resource units (resource, element, RE). Similarly, the reference signal may also occupy only a few REs.
功耗节省信号1可以复用部分参考信号，因此，在该情况下，功耗节省信号1也可以称为部分(partial)参考信号，占用区域2的参考信号可称为完整(full)参考信号。在本申请中，若无特别说明，“参考信号”均指“完整参考信号”。The power saving signal 1 can multiplex part of the reference signal. Therefore, in this case, the power saving signal 1 can also be called a partial reference signal, and the reference signal occupying the area 2 can be called a full reference signal. . In this application, unless otherwise specified, "reference signal" refers to "complete reference signal".
例如，区域1的时域范围为符号0至符号6，区域2的时域范围为符号0至符号13，在符号0至符号6的OFDM符号上，功耗节省信号和参考信号可以是正交频分复用(orthogonal frequency division multiplexing，OFDM)的，也可以是码分复用的。若终端设备在符号0至符号6上检测到部分参考信号，则终端设备确定收到了功耗节省信号1，终端设备可以继续在符号7至符号13上接收剩余的参考信号，并将剩余的参考信号和之前存储的部分参考信号合并后进行相应的操作，例如进行时频偏跟踪、信道状态估计或波束训练。若终端设备在符号0至符号6上未检测到部分参考信号，则终端设备确定符号0至符号13(即，S320中所述的传输资源)上不存在参考信号。其中，功耗节省信号1在符号0至符号6上的序列可以复用参考信号的部分序列。For example, the time domain range of region 1 is symbol 0 to symbol 6, and the time domain range of region 2 is symbol 0 to symbol 13. On the OFDM symbol of symbol 0 to symbol 6, the power saving signal and the reference signal may be orthogonal Frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) can also be code division multiplexing. If the terminal device detects part of the reference signals on symbols 0 to 6, the terminal device determines that the power saving signal 1 has been received, and the terminal device may continue to receive the remaining reference signals on symbols 7 to 13, and the remaining reference signals The signal and the previously stored part of the reference signal are combined to perform corresponding operations, such as time-frequency offset tracking, channel state estimation, or beam training. If the terminal device does not detect part of the reference signals on symbols 0 to 6, the terminal device determines that there are no reference signals on symbols 0 to 13 (ie, the transmission resources described in S320). Among them, the sequence of the power saving signal 1 on the symbols 0 to 6 may multiplex the partial sequence of the reference signal.
又例如，区域1的时域范围为符号0至符号6，区域2的时域范围为符号2至符号13。若终端设备在符号0至符号6上检测到部分参考信号，则终端设备确定收到了功耗节省信号1，终端设备可以继续在符号7至符号13上接收剩余的参考信号，并将剩余的参考信号和之前存储的部分参考信号合并后进行相应的操作。若终端设备在符号0至符号6上未检测到部分参考信号，则终端设备确定符号2至符号13上不存在参考信号。其中，功耗节省信号1在符号2至符号6上的序列可以复用参考信号的部分序列。For another example, the time domain range of region 1 is symbol 0 to symbol 6, and the time domain range of region 2 is symbol 2 to symbol 13. If the terminal device detects part of the reference signals on symbols 0 to 6, the terminal device determines that the power saving signal 1 has been received, and the terminal device may continue to receive the remaining reference signals on symbols 7 to 13, and the remaining reference signals The signal and the previously stored part of the reference signal are combined to perform the corresponding operation. If the terminal device does not detect part of the reference signal on symbols 0 to 6, the terminal device determines that there is no reference signal on symbols 2 to 13. Among them, the sequence of the power saving signal 1 on the symbols 2 to 6 may multiplex the partial sequence of the reference signal.
上述示例均是以是否检测到功耗节省信号1作为判断传输资源上是否存在参考信号的依据，终端设备还可以根据功耗节省信号1的序列判断传输资源上是否存在参考信号。In the above examples, whether the power saving signal 1 is detected is used as a basis for determining whether a reference signal exists on the transmission resource. The terminal device may also determine whether there is a reference signal on the transmission resource according to the sequence of the power saving signal 1.
由上述示例可知，相比于现有技术将整个TRS作为唤醒信号唤醒终端设备的方案，功耗节省信号1作为唤醒信号能够减少资源开销。当功耗节省信号1的时频区域与参考信 号的时频区域部分重叠时，功耗节省信号1可以复用参考信号的部分序列，能够减小终端设备检测功耗节省信号1的复杂度。It can be seen from the above example that, compared with the solution of using the entire TRS as a wake-up signal to wake up a terminal device in the prior art, the power saving signal 1 as a wake-up signal can reduce resource overhead. When the time-frequency region of the power-saving signal 1 partially overlaps with the time-frequency region of the reference signal, the power-saving signal 1 can multiplex a partial sequence of the reference signal, which can reduce the complexity of the terminal device detecting the power-saving signal 1.
可选地，终端设备还可以无需等待功耗节省信号1完全解码即可确定传输资源上是否存在参考信号。Optionally, the terminal device can also determine whether there is a reference signal on the transmission resource without waiting for the power saving signal 1 to be completely decoded.
例如，终端设备在符号0至符号2上检测到并解析出部分序列，若该部分序列属于功耗节省信号1的序列，则终端设备即可确定接收到功耗节省信号1；若该部分序列不属于功耗节省信号1的序列，则终端设备可以确定未接收到功耗节省信号1，从而可以提前进入休眠状态，减小功耗。For example, the terminal device detects and parses a partial sequence on the symbols 0 to 2, and if the partial sequence belongs to the sequence of the power saving signal 1, the terminal device can determine that the power saving signal 1 is received; if the partial sequence If it does not belong to the sequence of the power saving signal 1, the terminal device can determine that the power saving signal 1 is not received, so that it can enter the sleep state in advance and reduce the power consumption.
功耗节省信号2。Power saving signal 2.
功耗节省信号2的频域宽度小于参考信号的频域宽度。功耗节省信号2的时域宽度可以大于、小于或等于参考信号的时域宽度。功耗节省信号2占用的时频区域与参考信号占用的时频区域不重叠或者部分重叠。如图5所示，阴影部分为功耗节省信号2占用的时频区域，无阴影的矩形表示参考信号占用的时频区域。其中，功耗节省信号2的频域与参考信号的频域部分重叠或者不重叠，并且，功耗节省信号2的时域与参考信号的时域部分重叠或者不重叠，并且，功耗节省信号2的时域起始位置位于参考信号的时域起始位置之前。The frequency domain width of the power saving signal 2 is smaller than the frequency domain width of the reference signal. The time domain width of the power saving signal 2 may be greater than, less than, or equal to the time domain width of the reference signal. The time-frequency area occupied by the power saving signal 2 does not overlap or partially overlaps the time-frequency area occupied by the reference signal. As shown in FIG. 5, the shaded portion is the time-frequency area occupied by the power saving signal 2, and the unshaded rectangle indicates the time-frequency area occupied by the reference signal. Wherein, the frequency domain of the power saving signal 2 partially overlaps or does not overlap the frequency domain of the reference signal, and the time domain of the power saving signal 2 partially overlaps or does not overlap the time domain of the reference signal, and the power saving signal The time domain start position of 2 is before the time domain start position of the reference signal.
需要说明的是，阴影部分表示功耗节省信号2占用的时频区域的范围，但功耗节省信号2并不一定完全占用该时频区域，例如，功耗节省信号2仅占用该时频区域的几个RE。类似地，参考信号也可以是仅占用几个RE。It should be noted that the shaded portion indicates the range of the time-frequency region occupied by the power-saving signal 2, but the power-saving signal 2 does not necessarily completely occupy the time-frequency region. For example, the power-saving signal 2 only occupies the time-frequency region Of several REs. Similarly, the reference signal may also occupy only a few REs.
功耗节省信号2可以复用部分参考信号，因此，在该情况下，功耗节省信号2也可以称为部分参考信号，占用区域2的参考信号可称为完整参考信号。The power saving signal 2 can multiplex part of the reference signal. Therefore, in this case, the power saving signal 2 can also be called a partial reference signal, and the reference signal occupying the area 2 can be called a complete reference signal.
例如，区域1的频域大小为24个资源块(resource block，RB)对应的带宽，区域2的频域大小为72个RB对应的带宽。若终端设备在该24个RB对应的带宽上检测到部分参考信号，则终端设备确定收到了功耗节省信号2，终端设备可以继续在72个RB对应的带宽上接收剩余的参考信号。若终端设备在该24个RB对应的带宽上未检测到部分参考信号，则终端设备确定72个RB对应的带宽(即，S320中所述的传输资源)上不存在参考信号。其中，若功耗节省信号2的时频区域与参考信号的时频区域部分重叠，则功耗节省信号2在上述24个RB对应的带宽上的序列可以复用参考信号的部分序列。For example, the frequency domain size of region 1 is a bandwidth corresponding to 24 resource blocks (resource blocks, RB), and the frequency domain size of region 2 is a bandwidth corresponding to 72 RBs. If the terminal device detects part of the reference signal on the bandwidth corresponding to the 24 RBs, the terminal device determines that the power saving signal 2 is received, and the terminal device may continue to receive the remaining reference signals on the bandwidth corresponding to 72 RBs. If the terminal device does not detect part of the reference signal on the bandwidth corresponding to the 24 RBs, the terminal device determines that there is no reference signal on the bandwidth corresponding to 72 RBs (that is, the transmission resources described in S320). Wherein, if the time-frequency region of the power-saving signal 2 partially overlaps with the time-frequency region of the reference signal, the sequence of the power-saving signal 2 on the bandwidth corresponding to the 24 RBs may multiplex the partial sequence of the reference signal.
上述示例是以是否检测到功耗节省信号2作为判断传输资源上是否存在参考信号的依据，终端设备还可以根据功耗节省信号2的序列判断传输资源上是否存在参考信号。In the above example, whether the power saving signal 2 is detected is used as a basis for determining whether a reference signal exists on the transmission resource. The terminal device may also determine whether the reference signal exists on the transmission resource according to the sequence of the power saving signal 2.
由上述示例可知，相比于现有技术将整个TRS作为唤醒信号唤醒终端设备的方案，功耗节省信号2作为唤醒信号能够降低检测功耗节省信号的功耗，减少资源开销。当功耗节省信号2的时频区域与参考信号的时频区域部分重叠时，功耗节省信号2可以复用参考信号的部分序列，能够减小终端设备检测功耗节省信号2的复杂度。It can be seen from the above example that, compared with the prior art scheme of using the entire TRS as a wake-up signal to wake up a terminal device, the power-saving signal 2 as a wake-up signal can reduce the power consumption of detecting the power-saving signal and reduce resource overhead. When the time-frequency region of the power-saving signal 2 partially overlaps the time-frequency region of the reference signal, the power-saving signal 2 can multiplex a partial sequence of the reference signal, which can reduce the complexity of the terminal device detecting the power-saving signal 2.
功耗节省信号3。Power saving signal 3.
功耗节省信号3的时域长度小于参考信号的时域长度，并且，功耗节省信号3的频域宽度小于参考信号的频域宽度。功耗节省信号3占用的时频区域与参考信号占用的时频区域不重叠或者部分重叠。如图6所示，阴影部分为功耗节省信号3占用的时频区域，无阴影的矩形表示参考信号占用的时频区域。其中，功耗节省信号3的频域与参考信号的频域部分重叠或者不重叠，并且，功耗节省信号3的时域与参考信号的时域部分重叠或者不重 叠，并且，功耗节省信号3的时域起始位置位于参考信号的时域起始位置之前或者这两个时域起始位置相同。The time domain length of the power saving signal 3 is smaller than the time domain length of the reference signal, and the frequency domain width of the power saving signal 3 is smaller than the frequency domain width of the reference signal. The time-frequency area occupied by the power saving signal 3 does not overlap or partially overlaps the time-frequency area occupied by the reference signal. As shown in FIG. 6, the shaded portion is the time-frequency area occupied by the power saving signal 3, and the unshaded rectangle indicates the time-frequency area occupied by the reference signal. Wherein, the frequency domain of the power saving signal 3 partially overlaps or does not overlap the frequency domain of the reference signal, and the time domain of the power saving signal 3 partially overlaps or does not overlap the time domain of the reference signal, and the power saving signal The time domain start position of 3 is before the time domain start position of the reference signal or the two time domain start positions are the same.
需要说明的是，阴影部分表示功耗节省信号3占用的时频区域的范围，但功耗节省信号3并不一定完全占用该时频区域，例如，功耗节省信号3仅占用该时频区域的几个RE。类似地，参考信号也可以是仅占用几个RE。It should be noted that the shaded portion indicates the range of the time-frequency region occupied by the power-saving signal 3, but the power-saving signal 3 does not necessarily completely occupy the time-frequency region, for example, the power-saving signal 3 only occupies the time-frequency region Of several REs. Similarly, the reference signal may also occupy only a few REs.
功耗节省信号3可以复用部分参考信号，因此，在该情况下，功耗节省信号3也可以称为部分参考信号，占用区域2的参考信号可称为完整参考信号。The power saving signal 3 can multiplex part of the reference signal. Therefore, in this case, the power saving signal 3 can also be called a partial reference signal, and the reference signal occupying the area 2 can be called a complete reference signal.
例如，区域1的时域范围为符号0至符号6，区域2的时域范围为符号2至符号13，区域1的频域大小为24个RB对应的带宽，区域2的频域大小为72个RB对应的带宽。若终端设备在符号0至符号1上检测到并解析出部分序列，且该部分序列属于功耗节省信号3的序列，则终端设备即可确定接收到功耗节省信号3，终端设备可以继续在符号2至符号13上以及在72个RB对应的带宽上接收参考信号。若终端设备在符号0至符号1上检测到并解析出部分序列，且该部分序列不属于功耗节省信号3的序列，或者，若终端设备在符号0至符号6上未检测到部分参考信号，则终端设备确定符号2至符号13上不存在参考信号。其中，功耗节省信号3在符号2至符号6上的序列可以复用参考信号的部分序列。For example, the time domain range of region 1 is symbol 0 to symbol 6, the time domain range of region 2 is symbol 2 to symbol 13, the frequency domain size of region 1 is the bandwidth corresponding to 24 RBs, and the frequency domain size of region 2 is 72 The bandwidth corresponding to each RB. If the terminal device detects and parses a partial sequence on symbols 0 to 1, and the partial sequence belongs to the sequence of the power saving signal 3, the terminal device can determine that the power saving signal 3 is received, and the terminal device can continue to Reference symbols are received on symbols 2 to 13 and on the bandwidth corresponding to 72 RBs. If the terminal device detects and parses a partial sequence on symbols 0 to 1, and the partial sequence does not belong to the power saving signal 3 sequence, or if the terminal device does not detect a partial reference signal on symbols 0 to 6 , Then the terminal device determines that there is no reference signal on symbols 2 to 13. Among them, the sequence of the power saving signal 3 on the symbols 2 to 6 may multiplex the partial sequence of the reference signal.
上述示例是以是否检测到功耗节省信号3作为判断传输资源上是否存在参考信号的依据，终端设备还可以根据功耗节省信号3的序列判断传输资源上是否存在参考信号。In the above example, whether the power saving signal 3 is detected is used as a basis for determining whether there is a reference signal on the transmission resource. The terminal device can also determine whether there is a reference signal on the transmission resource according to the sequence of the power saving signal 3.
由上述示例可知，相比于现有技术将TRS作为唤醒信号唤醒终端设备的方案，功耗节省信号3作为唤醒信号能够减少资源开销。当功耗节省信号3复用参考信号的部分序列时，还能够减少终端设备检测功耗节省信号3的复杂度。It can be known from the above example that, compared with the solution of using the TRS as the wake-up signal to wake up the terminal device in the prior art, the power saving signal 3 as the wake-up signal can reduce resource overhead. When the power saving signal 3 multiplexes a partial sequence of the reference signal, the complexity of the terminal device detecting the power saving signal 3 can also be reduced.
基于方法300，图7示出了本申请提供的通信方法的另一个示例。Based on the method 300, FIG. 7 shows another example of the communication method provided by the present application.
图7示出了4个连接模式DRX(connected mode DRX，C-DRX)循环，网络设备提前配置每个C-DRX循环的DRX-onDurationTimer、DRX-InactivityTimer的长度。图7中，大虚线框表示参考信号占用的时频区域，并且，网络设备未在该时频区域发送参考信号；小虚线框表示唤醒信号占用的时频区域，并且，网络设备未在该时频区域发送唤醒信号；阴影区域表示唤醒信号占用的时频区域，并且，网络设备在该时频区域发送了唤醒信号；包含阴影区域的实线框表示参考信号占用的时频区域，并且，网络设备在该时频区域发送了参考信号。FIG. 7 shows four connected mode DRX (connected mode DRX, C-DRX) cycles, and the network device configures the lengths of DRX-onDurationTimer and DRX-InactivityTimer for each C-DRX cycle in advance. In FIG. 7, the large dashed box represents the time-frequency region occupied by the reference signal, and the network device does not send the reference signal in the time-frequency region; the small dashed box represents the time-frequency region occupied by the wake-up signal, and the network device is not at this time The wake-up signal is sent in the frequency area; the shaded area indicates the time-frequency area occupied by the wake-up signal, and the network device sends the wake-up signal in the time-frequency area; the solid line box containing the shaded area indicates the time-frequency area occupied by the reference signal, and the network The device sent a reference signal in this time-frequency region.
网络设备配置了4个唤醒信号发送时机(occasion)和1个参考信号发送时机，终端设备需要在每个唤醒信号发送时机按照部分参考信号的图案(pattern)检测唤醒信号。The network device is configured with 4 wake-up signal transmission opportunities (occasion) and 1 reference signal transmission opportunity. The terminal device needs to detect the wake-up signal according to the pattern of the partial reference signal at each wake-up signal transmission opportunity.
例如，终端设备在C-DRX循环1之前的唤醒信号发送时机检测到唤醒信号，并且该唤醒信号承载的序列为第二序列，则终端设备确定C-DRX循环1之前的参考信号发送时机不存在参考信号，终端设备可以根据上述唤醒信号在C-DRX循环1的苏醒阶段监听PDCCH和物理下行共享信道(physical downlink shared channel，PDSCH)。For example, if the terminal device detects a wake-up signal at the wake-up signal transmission timing before C-DRX cycle 1, and the sequence carried by the wake-up signal is the second sequence, the terminal device determines that the reference signal transmission time before C-DRX cycle 1 does not exist With reference to the signal, the terminal device can monitor the PDCCH and the physical downlink shared channel (PDSCH) during the wake-up phase of C-DRX cycle 1 according to the wake-up signal.
终端设备在C-DRX循环2的休眠阶段内未检测到唤醒信号，则终端设备确定保持休眠状态，不检测参考信号，也不监听PDCCH和PDSCH。If the terminal device does not detect the wake-up signal during the sleep phase of the C-DRX cycle 2, the terminal device determines to stay in the sleep state, does not detect the reference signal, and does not monitor the PDCCH and PDSCH.
在C-DRX循环4之前的休眠阶段内存在参考信号的发送时机，终端设备可以按照完整参考信号的图案检测唤醒信号，并在检测到唤醒信号后基于参考信号进行时频同步、信 道估计或者波束训练等操作。In the sleep stage before the C-DRX cycle 4, there is a timing for sending the reference signal. The terminal device can detect the wake-up signal according to the pattern of the complete reference signal, and perform time-frequency synchronization, channel estimation, or beam based on the reference signal after the wake-up signal is detected. Operations such as training.
图7所示的各个唤醒信号是功率节省信号3，可选地，也可以采用功率节省信号1和功率节省信号2作为唤醒信号。Each wake-up signal shown in FIG. 7 is the power-saving signal 3, and optionally, the power-saving signal 1 and the power-saving signal 2 may also be used as the wake-up signal.
此外，多个终端设备可以通过码分或者频移等方法复用相同的序列。In addition, multiple terminal devices can multiplex the same sequence through methods such as code division or frequency shift.
上文主要从终端设备的角度描述了本申请提供的通信方法，网络设备的处理过程与终端设备的处理过程具有对应关系，例如，终端设备从网络设备接收信息，意味着网络设备发送了该信息；终端设备向网络设备发送信息，意味着网络设备从终端设备接收该信息。因此，即使上文个别地方未明确写明网络设备的处理过程，本领域技术人员也可以基于终端设备的处理过程清楚地了解网络设备的处理过程。The above mainly describes the communication method provided by the present application from the perspective of a terminal device. The processing procedure of the network device has a corresponding relationship with the processing procedure of the terminal device. For example, the terminal device receives information from the network device, which means that the network device sends the information ; The terminal device sends information to the network device, meaning that the network device receives the information from the terminal device. Therefore, even if the processing procedure of the network device is not explicitly stated in the individual places above, those skilled in the art can clearly understand the processing procedure of the network device based on the processing procedure of the terminal device.
上文详细介绍了本申请提供的通信方法的示例。可以理解的是，通信装置为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。The example of the communication method provided by the present application is described in detail above. It can be understood that, in order to realize the above-mentioned functions, the communication device includes a hardware structure and/or a software module corresponding to each function. Those skilled in the art should be easily aware that, in conjunction with the exemplary units and algorithm steps described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driven hardware depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.
本申请可以根据上述方法示例对通信装置进行功能单元的划分，例如，可以将各个功能划分为各个功能单元，也可以将两个或两个以上的功能集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。需要说明的是，本申请中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。The present application may divide the functional unit of the communication device according to the above method example. For example, each function may be divided into various functional units, or two or more functions may be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or software function unit. It should be noted that the division of the units in this application is schematic, and is only a division of logical functions. In actual implementation, there may be another division manner.
图8示出了本申请提供的一种通信装置的结构示意图。通信装置800可用于实现上述方法实施例中描述的方法。该通信装置800可以是芯片、网络设备或终端设备。FIG. 8 shows a schematic structural diagram of a communication device provided by the present application. The communication device 800 may be used to implement the method described in the above method embodiments. The communication device 800 may be a chip, a network device, or a terminal device.
通信装置800包括一个或多个处理器801，该一个或多个处理器801可支持通信装置800实现图3所对应方法实施例中的方法。处理器801可以是通用处理器或者专用处理器。例如，处理器801可以是中央处理器(central processing unit，CPU)或基带处理器。基带处理器可以用于处理通信数据(例如，上文所述的功耗节省信号)，CPU可以用于对通信装置(例如，网络设备、终端设备或芯片)进行控制，执行软件程序，处理软件程序的数据。通信装置800还可以包括收发单元805，用以实现信号的输入(接收)和输出(发送)。The communication device 800 includes one or more processors 801, and the one or more processors 801 may support the communication device 800 to implement the method in the method embodiment corresponding to FIG. The processor 801 may be a general-purpose processor or a dedicated processor. For example, the processor 801 may be a central processing unit (CPU) or a baseband processor. The baseband processor can be used to process communication data (for example, the power saving signal described above), and the CPU can be used to control communication devices (for example, network devices, terminal devices, or chips), execute software programs, and process software Program data. The communication device 800 may further include a transceiving unit 805 to implement signal input (reception) and output (transmission).
例如，通信装置800可以是芯片，收发单元805可以是该芯片的输入和/或输出电路，或者，收发单元805可以是该芯片的通信接口，该芯片可以作为终端设备或网络设备或其它无线通信设备的组成部分。For example, the communication device 800 may be a chip, and the transceiver unit 805 may be an input and/or output circuit of the chip, or the transceiver unit 805 may be a communication interface of the chip, and the chip may serve as a terminal device or a network device or other wireless communication Components of the device.
通信装置800中可以包括一个或多个存储器802，其上存有程序804，程序804可被处理器801运行，生成指令803，使得处理器801根据指令803执行上述方法实施例中描述的方法。可选地，存储器802中还可以存储有数据。可选地，处理器801还可以读取存储器802中存储的数据，该数据可以与程序804存储在相同的存储地址，该数据也可以与程序804存储在不同的存储地址。The communication device 800 may include one or more memories 802 on which a program 804 is stored. The program 804 may be executed by the processor 801 to generate instructions 803, so that the processor 801 executes the method described in the above method embodiments according to the instructions 803. Optionally, the memory 802 may also store data. Optionally, the processor 801 may also read the data stored in the memory 802, the data may be stored at the same storage address as the program 804, or the data may be stored at a different storage address than the program 804.
处理器801和存储器802可以单独设置，也可以集成在一起，例如，集成在单板或者***级芯片(system on chip，SOC)上。The processor 801 and the memory 802 may be set separately, or may be integrated together, for example, integrated on a single board or a system on chip (SOC).
通信装置800还可以包括收发单元805以及天线806。收发单元805可以称为收发机、收发电路或者收发器，用于通过天线806实现通信装置的收发功能。The communication device 800 may further include a transceiver unit 805 and an antenna 806. The transceiver unit 805 may be called a transceiver, a transceiver circuit, or a transceiver, and is used to implement the transceiver function of the communication device through the antenna 806.
在一种可能的设计中，处理器801用于通过收发单元805以及天线806向终端设备发送功耗节省信号。In a possible design, the processor 801 is used to send a power saving signal to the terminal device through the transceiver unit 805 and the antenna 806.
在另一种可能的设计中，处理器801用于通过收发单元805以及天线806从网络设备接收功耗节省信号。In another possible design, the processor 801 is used to receive the power saving signal from the network device through the transceiver unit 805 and the antenna 806.
接收或发送功耗节省信号的具体方式可以参见上述方法实施例中的相关描述。For a specific manner of receiving or sending a power saving signal, reference may be made to the related description in the foregoing method embodiments.
应理解，上述方法实施例的各步骤可以通过处理器801中的硬件形式的逻辑电路或者软件形式的指令完成。处理器801可以是CPU、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)或者其它可编程逻辑器件，例如，分立门、晶体管逻辑器件或分立硬件组件。It should be understood that the steps of the foregoing method embodiments may be completed by a logic circuit in the form of hardware or instructions in the form of software in the processor 801. The processor 801 may be a CPU, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices For example, discrete gates, transistor logic devices or discrete hardware components.
本申请还提供了一种计算机程序产品，该计算机程序产品被处理器801执行时实现本申请中任一方法实施例所述的通信方法。The present application also provides a computer program product which, when executed by the processor 801, implements the communication method described in any method embodiment of the present application.
该计算机程序产品可以存储在存储器802中，例如是程序804，程序804经过预处理、编译、汇编和链接等处理过程最终被转换为能够被处理器801执行的可执行目标文件。The computer program product may be stored in the memory 802, for example, the program 804, which is finally converted into an executable object file that can be executed by the processor 801 after preprocessing, compiling, assembling, and linking.
本申请还提供了一种计算机可读存储介质，其上存储有计算机程序，该计算机程序被计算机执行时实现本申请中任一方法实施例所述的通信方法。该计算机程序可以是高级语言程序，也可以是可执行目标程序。The present application also provides a computer-readable storage medium on which a computer program is stored, which when executed by a computer implements the communication method described in any of the method embodiments of the present application. The computer program may be a high-level language program or an executable target program.
该计算机可读存储介质例如是存储器802。存储器802可以是易失性存储器或非易失性存储器，或者，存储器802可以同时包括易失性存储器和非易失性存储器。其中，非易失性存储器可以是只读存储器(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)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。The computer-readable storage medium is, for example, the memory 802. The memory 802 may be a volatile memory or a non-volatile memory, or the memory 802 may include both a volatile memory and a non-volatile memory. Among them, the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electronically Erasable programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (random access memory, RAM), which acts as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous RAM, SDRAM), double data rate synchronous dynamic random access memory (double data SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct RAMbus RAM, DR RAM).
在通信装置800为终端设备的情况下，图9示出了本申请提供的一种终端设备的结构示意图。该终端设备900可适用于图1所示的***中，实现上述方法实施例中终端设备的功能。为了便于说明，图9仅示出了终端设备的主要部件。In the case where the communication device 800 is a terminal device, FIG. 9 shows a schematic structural diagram of a terminal device provided by the present application. The terminal device 900 may be applied to the system shown in FIG. 1 to implement the functions of the terminal device in the foregoing method embodiments. For ease of explanation, FIG. 9 shows only the main components of the terminal device.
如图9所示，终端设备900包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及用于对整个终端设备进行控制。例如，处理器通过天线和控制电路接收功耗节省信号。存储器主要用于存储程序和数据，例如存储通信协议和待发送数据。控制电路主要用于基带信号与射频信号的转换以及对射频信号的处理。控制电路和天线一起也可以叫做收发器，主要用于收发电磁波形式的射频 信号。输入输出装置例如是触摸屏或键盘，主要用于接收用户输入的数据以及对用户输出数据。As shown in FIG. 9, the terminal device 900 includes a processor, a memory, a control circuit, an antenna, and input/output devices. The processor is mainly used for processing communication protocols and communication data, and for controlling the entire terminal device. For example, the processor receives power saving signals through the antenna and control circuit. The memory is mainly used to store programs and data, such as storing communication protocols and data to be sent. The control circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal. The control circuit and the antenna can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. The input and output device is, for example, a touch screen or a keyboard, and is mainly used to receive data input by the user and output data to the user.
当终端设备开机后，处理器可以读取存储器中的程序，解释并执行该程序所包含的指令，处理程序中的数据。当需要通过天线发送信息时，处理器对待发送的信息进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后得到射频信号，并将射频信号通过天线以电磁波的形式向外发送。当承载信息的电磁波(即，射频信号)到达终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为信息并对该信息进行处理。When the terminal device is turned on, the processor can read the program in the memory, interpret and execute the instructions contained in the program, and process the data in the program. When the information needs to be sent through the antenna, the processor performs baseband processing on the information to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit processes the baseband signal after radio frequency processing to obtain the radio frequency signal, and passes the radio frequency signal through the antenna in the form of electromagnetic waves Send outside. When the electromagnetic wave carrying information (ie, radio frequency signal) reaches the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into information And process the information.
本领域技术人员可以理解，为了便于说明，图9仅示出了一个存储器和一个处理器。在实际的终端设备中，可以存在多个处理器和多个存储器。存储器也可以称为存储介质或者存储设备等，本申请对此不做限定。Those skilled in the art can understand that, for ease of description, FIG. 9 only shows one memory and one processor. In an actual terminal device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or storage device, etc., which is not limited in this application.
作为一种可选的实现方式，图9中的处理器可以集成基带处理器和CPU的功能，本领域技术人员可以理解，基带处理器和CPU也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端设备可以包括多个基带处理器以适应不同的网络制式，终端设备可以包括多个CPU以增强其处理能力，终端设备的各个部件可以通过各种总线连接。基带处理器也可以被称为基带处理电路或者基带处理芯片。CPU也可以被称为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以程序的形式存储在存储器中，由处理器执行存储器中的程序以实现基带处理功能。As an optional implementation, the processor in FIG. 9 may integrate the functions of the baseband processor and the CPU. Those skilled in the art may understand that the baseband processor and the CPU may also be independent processors, which may be implemented through a bus or other technologies. interconnected. Those skilled in the art may understand that the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple CPUs to enhance its processing capability, and various components of the terminal device may be connected through various buses. The baseband processor may also be called a baseband processing circuit or a baseband processing chip. The CPU may also be called a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the memory in the form of a program, and the processor executes the program in the memory to realize the baseband processing function.
在本申请中，可以将具有收发功能的天线和控制电路视为终端设备900的收发单元901，用于支持终端设备实现方法实施例中的接收功能，或者，用于支持终端设备实现方法实施例中的发送功能。将具有处理功能的处理器视为终端设备900的处理单元902。如图9所示，终端设备900包括收发单元901和处理单元902。收发单元也可以称为收发器、收发机、收发装置等。可选地，可以将收发单元901中用于实现接收功能的器件视为接收单元，将收发单元901中用于实现发送功能的器件视为发送单元，即收发单元901包括接收单元和发送单元，接收单元也可以称为接收机、输入口、接收电路等，发送单元可以称为发射机、发射器或者发射电路等。In this application, an antenna and a control circuit with a transceiver function can be regarded as the transceiver unit 901 of the terminal device 900, which is used to support the terminal device to implement the receiving function in the method embodiment, or to support the terminal device to implement the method embodiment Send function in. The processor with a processing function is regarded as the processing unit 902 of the terminal device 900. As shown in FIG. 9, the terminal device 900 includes a transceiving unit 901 and a processing unit 902. The transceiver unit may also be called a transceiver, a transceiver, a transceiver device, or the like. Optionally, the device used to implement the receiving function in the transceiver unit 901 can be regarded as a receiving unit, and the device used to implement the sending function in the transceiver unit 901 can be regarded as a sending unit, that is, the transceiver unit 901 includes a receiving unit and a sending unit, The receiving unit may also be called a receiver, an input port, a receiving circuit, etc., and the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.
处理器902可用于执行存储器存储的程序，以控制收发单元901接收信号和/或发送信号，完成上述方法实施例中终端设备的功能。作为一种实现方式，收发单元901的功能可以考虑通过收发电路或者收发专用芯片实现。The processor 902 may be used to execute a program stored in the memory to control the transceiver unit 901 to receive signals and/or send signals to complete the functions of the terminal device in the foregoing method embodiments. As an implementation manner, the function of the transceiver unit 901 can be considered to be implemented by a transceiver circuit or a dedicated transceiver chip.
在通信装置800为网络设备的情况下，图10是本申请提供的一种网络设备的结构示意图，该网络设备例如可以为基站。如图10所示，该基站可应用于如图1所示的***中，实现上述方法实施例中网络设备的功能。基站1000可包括一个或多个射频单元，如远端射频单元(remote radio unit,RRU)1001和至少一个基带单元(baseband unit，BBU)1002。其中，BBU1002可以包括分布式单元(distributed unit，DU)，也可以包括DU和集中单元(central unit，CU)。When the communication apparatus 800 is a network device, FIG. 10 is a schematic structural diagram of a network device provided by the present application. The network device may be, for example, a base station. As shown in FIG. 10, the base station can be applied to the system shown in FIG. 1 to implement the functions of the network device in the foregoing method embodiments. The base station 1000 may include one or more radio frequency units, such as a remote radio unit (RRU) 1001 and at least one baseband unit (BBU) 1002. Among them, the BBU 1002 may include a distributed unit (distributed unit, DU), and may also include a DU and a centralized unit (CU).
RRU1001可以称为收发单元、收发机、收发电路或者收发器，其可以包括至少一个天线10011和射频单元10012。RRU1001主要用于射频信号的收发以及射频信号与基带信号的转换，例如用于支持基站实现方法实施例中的发送功能和接收功能。BBU1002主要 用于进行基带处理，对基站进行控制等。RRU1001与BBU1002可以是物理上设置在一起的，也可以物理上分离设置的，即分布式基站。The RRU 1001 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, and it may include at least one antenna 10011 and a radio frequency unit 10012. RRU1001 is mainly used for the transmission and reception of radio frequency signals and the conversion of radio frequency signals and baseband signals, for example, for supporting the base station to implement the transmission function and the reception function in the method embodiment. BBU1002 is mainly used for baseband processing and control of base stations. RRU1001 and BBU1002 can be physically set together, or can be physically separated, that is, distributed base station.
BBU1002也可以称为处理单元，主要用于完成基带处理功能，如信道编码，复用，调制，扩频等等。例如，BBU1002可以用于控制基站执行上述方法实施例中关于网络设备的操作流程。BBU1002 can also be called a processing unit, mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, and so on. For example, the BBU1002 can be used to control the base station to perform the operation flow on the network device in the above method embodiments.
BBU1002可以由一个或多个单板构成，多个单板可以共同支持单一接入制式的无线接入网(例如，长期演进(long term evolution，LTE)网)，也可以分别支持不同接入制式的无线接入网(如LTE网和NR网)。BBU1002还包括存储器10021和处理器10022，存储器10021用于存储必要的指令和数据。例如，存储器10021存储上述方法实施例中的功耗节省信号。处理器10022用于控制基站进行必要的动作，例如，用于控制基站执行上述方法实施例中的操作流程。存储器10021和处理器10022可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。The BBU1002 can be composed of one or more boards, and multiple boards can jointly support a wireless access network of a single access standard (for example, a long term evolution (LTE) network), or can support different access standards separately. Wireless access network (such as LTE network and NR network). The BBU 1002 also includes a memory 10021 and a processor 10022. The memory 10021 is used to store necessary instructions and data. For example, the memory 10021 stores the power saving signal in the above method embodiment. The processor 10022 is used to control the base station to perform necessary actions, for example, to control the base station to perform the operation flow in the foregoing method embodiment. The memory 10021 and the processor 10022 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It is also possible that multiple boards share the same memory and processor. In addition, each board can also be provided with necessary circuits.
本领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的***、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。Those skilled in the art can clearly understand that, for the convenience and conciseness of the description, the specific working processes of the above-described systems, devices, and units can refer to the corresponding processes in the foregoing method embodiments, and are not repeated here.
在本申请所提供的几个实施例中，所揭露的***、装置和方法，可以通过其它的方式实现。例如，以上所描述的方法实施例的一些特征可以忽略，或不执行。以上所描述的装置实施例仅仅是示意性的，单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，多个单元或组件可以结合或者可以集成到另一个***。另外，各单元之间的耦合或各个组件之间的耦合可以是直接耦合，也可以是间接耦合，上述耦合包括电的、机械的或其它形式的连接。In the several embodiments provided in this application, the disclosed system, device, and method may be implemented in other ways. For example, some features of the method embodiments described above can be ignored or not implemented. The device embodiments described above are only schematic. The division of units is only a division of logical functions. In actual implementation, there may be another division manner. Multiple units or components may be combined or integrated into another system. In addition, the coupling between the units or the coupling between the components may be direct coupling or indirect coupling. The coupling includes electrical, mechanical, or other forms of connection.
应理解，在本申请的各种实施例中，各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请的实施例的实施过程构成任何限定。It should be understood that in various embodiments of the present application, the size of the sequence number of each process does not mean the order of execution, and the execution order of each process should be determined by its function and inherent logic, and should not be applied to the embodiments of this application The implementation process constitutes no limitation.
另外，本文中术语“***”和“网络”在本文中常被可互换使用。本文中的术语“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，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。In addition, the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship that describes the related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, separate There are three cases of B. In addition, the character “/” in this article generally indicates that the related objects before and after it are in an “or” relationship.
总之，以上所述仅为本申请技术方案的较佳实施例而已，并非用于限定本申请的保护范围。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。In short, the above are only preferred embodiments of the technical solution of the present application, and are not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of this application shall be included in the scope of protection of this application.

Claims (24)

  1. 一种通信方法，其特征在于，包括：A communication method, characterized in that it includes:
    检测功耗节省信号；Detect power saving signal;
    根据对所述功耗节省信号的检测结果确定传输资源上是否存在参考信号，所述参考信号为跟踪参考信号，或，信道估计参考信号，或，波束训练参考信号。According to the detection result of the power saving signal, it is determined whether a reference signal exists on the transmission resource, the reference signal is a tracking reference signal, or a channel estimation reference signal, or a beam training reference signal.
  2. 根据权利要求1所述的通信方法，其特征在于，所述功耗节省信号的时域长度小于所述参考信号的时域长度，和/或，所述功耗节省信号的频域宽度小于所述参考信号的频域宽度。The communication method according to claim 1, wherein the time domain length of the power saving signal is less than the time domain length of the reference signal, and/or the frequency domain width of the power saving signal is less than The frequency domain width of the reference signal.
  3. 根据权利要求1或2所述的通信方法，其特征在于，所述根据是否检测到所述功耗节省信号确定传输资源上是否存在参考信号，包括：The communication method according to claim 1 or 2, wherein the determining whether a reference signal exists on a transmission resource according to whether the power saving signal is detected includes:
    当检测到所述功耗节省信号时，确定所述传输资源上存在所述参考信号；或者，When the power saving signal is detected, it is determined that the reference signal exists on the transmission resource; or,
    当未检测到所述功耗节省信号时，确定所述传输资源上不存在所述参考信号。When the power saving signal is not detected, it is determined that the reference signal does not exist on the transmission resource.
  4. 根据权利要求3所述的通信方法，其特征在于，所述通信方法还包括：The communication method according to claim 3, wherein the communication method further comprises:
    当确定所述传输资源上不存在所述参考信号时，保持休眠状态。When it is determined that the reference signal does not exist on the transmission resource, the sleep state is maintained.
  5. 根据权利要求1或2所述的通信方法，其特征在于，所述根据是否检测到所述功耗节省信号确定传输资源上是否存在参考信号，包括：The communication method according to claim 1 or 2, wherein the determining whether a reference signal exists on a transmission resource according to whether the power saving signal is detected includes:
    当检测到所述功耗节省信号时，根据所述功耗节省信号的属性确定所述传输资源上是否存在所述参考信号；或者，When the power saving signal is detected, determining whether the reference signal exists on the transmission resource according to the attribute of the power saving signal; or,
    当未检测到所述功耗节省信号时，确定所述传输资源上不存在所述参考信号。When the power saving signal is not detected, it is determined that the reference signal does not exist on the transmission resource.
  6. 根据权利要求5所述的通信方法，其特征在于，所述根据所述功耗节省信号的属性确定所述传输资源上是否存在所述参考信号，包括：The communication method according to claim 5, wherein the determining whether the reference signal exists on the transmission resource according to the attribute of the power saving signal includes:
    当所述功耗节省信号承载的序列为第一序列时，确定所述传输资源上存在所述参考信号；或者When the sequence carried by the power saving signal is the first sequence, it is determined that the reference signal exists on the transmission resource; or
    当所述功耗节省信号承载的序列为第二序列时，确定所述传输资源上不存在所述参考信号。When the sequence carried by the power saving signal is the second sequence, it is determined that the reference signal does not exist on the transmission resource.
  7. 根据权利要求1至6中任一项所述的通信方法，其特征在于，所述检测功耗节省信号，包括：The communication method according to any one of claims 1 to 6, wherein the detecting the power saving signal includes:
    在预设时段内检测所述功耗节省信号。The power saving signal is detected within a preset time period.
  8. 一种通信方法，其特征在于，包括：A communication method, characterized in that it includes:
    确定是否发送参考信号，所述参考信号为跟踪参考信号，或，信道估计参考信号，或，波束训练参考信号；Determine whether to send a reference signal, the reference signal is a tracking reference signal, or a channel estimation reference signal, or a beam training reference signal;
    当确定发送所述参考信号时，发送功耗节省信号；或者，当确定不发送所述参考信号时，不发送功耗节省信号；When it is determined that the reference signal is transmitted, a power saving signal is transmitted; or, when it is determined that the reference signal is not transmitted, the power saving signal is not transmitted;
    或者，or,
    当确定发送所述参考信号时，发送第一属性的功耗节省信号；或者，当确定不发送所述参考信号时，发送第二属性的功耗节省信号；When it is determined that the reference signal is transmitted, a power saving signal of the first attribute is transmitted; or, when it is determined that the reference signal is not transmitted, a power saving signal of the second attribute is transmitted;
    或者，or,
    当确定发送所述参考信号时，发送第一属性的功耗节省信号；或者，当确定不发送所述参考信号但需要发送功耗节省信号时，发送第二属性的功耗节省信号；或者，当确定发送所述参考信号且不需要发送功耗节省信号时，不发送功耗节省信号。When it is determined that the reference signal is transmitted, the power saving signal of the first attribute is transmitted; or, when it is determined that the reference signal is not transmitted but the power saving signal is required to be transmitted, the power saving signal of the second attribute is transmitted; or, When it is determined that the reference signal is transmitted and the power saving signal does not need to be transmitted, the power saving signal is not transmitted.
  9. 根据权利要求8所述的通信方法，其特征在于，所述功耗节省信号的时域长度小于所述参考信号的时域长度，和/或，所述功耗节省信号的频域宽度小于所述参考信号的频域宽度。The communication method according to claim 8, wherein the time domain length of the power saving signal is less than the time domain length of the reference signal, and/or the frequency domain width of the power saving signal is less than The frequency domain width of the reference signal.
  10. 根据权利要求8或9所述的通信方法，其特征在于，所述第一属性的功耗节省信号为承载第一序列的功耗节省信号，所述第二属性的功耗节省信号为承载第二序列的功耗节省信号，所述第一序列用于指示所述传输资源上存在所述参考信号，所述第二序列用于指示所述传输资源上不存在所述参考信号。The communication method according to claim 8 or 9, wherein the power saving signal of the first attribute is a power saving signal that carries the first sequence, and the power saving signal of the second attribute is a signal that carries the first Two sequences of power saving signals. The first sequence is used to indicate that the reference signal exists on the transmission resource, and the second sequence is used to indicate that the reference signal does not exist on the transmission resource.
  11. 根据权利要求8至10中任一项所述的通信方法，其特征在于，The communication method according to any one of claims 8 to 10, characterized in that
    所述发送功耗节省信号，包括：在预设时段内发送所述功耗节省信号；或者，The sending the power saving signal includes: sending the power saving signal within a preset time period; or,
    所述发送第一属性的功耗节省信号，包括：在预设时段内发送所述第一属性的功耗节省信号；或者，The sending the power saving signal of the first attribute includes: sending the power saving signal of the first attribute within a preset time period; or,
    所述发送第二属性的功耗节省信号，包括：在预设时段内发送所述第二属性的功耗节省信号。The sending the power saving signal of the second attribute includes: sending the power saving signal of the second attribute within a preset time period.
  12. 一种通信装置，其特征在于，包括处理单元和接收单元，所述处理单元用于：A communication device, characterized by comprising a processing unit and a receiving unit, the processing unit being used for:
    控制所述接收单元检测功耗节省信号；Controlling the receiving unit to detect a power saving signal;
    根据对所述功耗节省信号的检测结果确定传输资源上是否存在参考信号，所述参考信号为跟踪参考信号，或，信道估计参考信号，或，波束训练参考信号。According to the detection result of the power saving signal, it is determined whether a reference signal exists on the transmission resource, the reference signal is a tracking reference signal, or a channel estimation reference signal, or a beam training reference signal.
  13. 根据权利要求12所述的通信装置，其特征在于，所述功耗节省信号的时域长度小于所述参考信号的时域长度，和/或，所述功耗节省信号的频域宽度小于所述参考信号的频域宽度。The communication device according to claim 12, wherein the time domain length of the power saving signal is less than the time domain length of the reference signal, and/or the frequency domain width of the power saving signal is less than The frequency domain width of the reference signal.
  14. 根据权利要求12或13所述的通信装置，其特征在于，所述处理单元具体用于：The communication device according to claim 12 or 13, wherein the processing unit is specifically configured to:
    当检测到所述功耗节省信号时，确定所述传输资源上存在所述参考信号；或者，When the power saving signal is detected, it is determined that the reference signal exists on the transmission resource; or,
    当未检测到所述功耗节省信号时，确定所述传输资源上不存在所述参考信号。When the power saving signal is not detected, it is determined that the reference signal does not exist on the transmission resource.
  15. 根据权利要求14所述的通信装置，其特征在于，所述处理单元还用于：The communication device according to claim 14, wherein the processing unit is further configured to:
    当确定所述传输资源上不存在所述参考信号时，保持休眠状态。When it is determined that the reference signal does not exist on the transmission resource, the sleep state is maintained.
  16. 根据权利要求12或13所述的通信装置，其特征在于，所述处理单元具体用于：The communication device according to claim 12 or 13, wherein the processing unit is specifically configured to:
    当检测到所述功耗节省信号时，根据所述功耗节省信号的属性确定所述传输资源上是否存在所述参考信号；或者，When the power saving signal is detected, determining whether the reference signal exists on the transmission resource according to the attribute of the power saving signal; or,
    当未检测到所述功耗节省信号时，确定所述传输资源上不存在所述参考信号。When the power saving signal is not detected, it is determined that the reference signal does not exist on the transmission resource.
  17. 根据权利要求16所述的通信装置，其特征在于，所述处理单元具体用于：The communication device according to claim 16, wherein the processing unit is specifically configured to:
    当所述功耗节省信号承载的序列为第一序列时，确定所述传输资源上存在所述参考信号；或者When the sequence carried by the power saving signal is the first sequence, it is determined that the reference signal exists on the transmission resource; or
    当所述功耗节省信号承载的序列为第二序列时，确定所述传输资源上不存在所述参考信号。When the sequence carried by the power saving signal is the second sequence, it is determined that the reference signal does not exist on the transmission resource.
  18. 根据权利要求12至17中任一项所述的通信装置，其特征在于，所述处理单元具体用于：The communication device according to any one of claims 12 to 17, wherein the processing unit is specifically configured to:
    控制所述接收单元在预设时段内检测所述功耗节省信号。Controlling the receiving unit to detect the power saving signal within a preset period of time.
  19. 一种通信装置，其特征在于，包括处理单元和发送单元，所述处理单元用于：A communication device, characterized in that it includes a processing unit and a sending unit, and the processing unit is used for:
    确定是否发送参考信号，所述参考信号为跟踪参考信号，或，信道估计参考信号，或，波束训练参考信号；Determine whether to send a reference signal, the reference signal is a tracking reference signal, or a channel estimation reference signal, or a beam training reference signal;
    当确定发送所述参考信号时，控制所述发送单元发送功耗节省信号；或者，当确定不发送所述参考信号时，不发送功耗节省信号；When it is determined that the reference signal is transmitted, controlling the sending unit to transmit a power saving signal; or, when it is determined that the reference signal is not transmitted, the power saving signal is not transmitted;
    或者，or,
    当确定发送所述参考信号时，控制所述发送单元发送第一属性的功耗节省信号；或者，当确定不发送所述参考信号时，控制所述发送单元发送第二属性的功耗节省信号；When it is determined that the reference signal is transmitted, the transmission unit is controlled to transmit the power saving signal of the first attribute; or, when it is determined that the reference signal is not transmitted, the transmission unit is controlled to transmit the power saving signal of the second attribute ;
    或者，or,
    当确定发送所述参考信号时，控制所述发送单元发送第一属性的功耗节省信号；或者，当确定不发送所述参考信号但需要发送功耗节省信号时，控制所述发送单元发送第二属性的功耗节省信号；或者，当确定发送所述参考信号且不需要发送功耗节省信号时，不发送功耗节省信号。When it is determined to send the reference signal, the sending unit is controlled to send the power saving signal of the first attribute; or, when it is determined that the reference signal is not sent but the power saving signal needs to be sent, the sending unit is controlled to send the first The two-attribute power saving signal; or, when it is determined that the reference signal is transmitted and the power saving signal is not required to be sent, the power saving signal is not sent.
  20. 根据权利要求19所述的通信装置，其特征在于，所述功耗节省信号的时域长度小于所述参考信号的时域长度，和/或，所述功耗节省信号的频域宽度小于所述参考信号的频域宽度。The communication device according to claim 19, wherein the time domain length of the power saving signal is less than the time domain length of the reference signal, and/or the frequency domain width of the power saving signal is less than The frequency domain width of the reference signal.
  21. 根据权利要求19或20所述的通信装置，其特征在于，所述第一属性的功耗节省信号为承载第一序列的功耗节省信号，所述第二属性的功耗节省信号为承载第二序列的功耗节省信号，所述第一序列用于指示所述传输资源上存在所述参考信号，所述第二序列用于指示所述传输资源上不存在所述参考信号。The communication device according to claim 19 or 20, wherein the power saving signal of the first attribute is a power saving signal that carries the first sequence, and the power saving signal of the second attribute is a signal that carries the first Two sequences of power saving signals. The first sequence is used to indicate that the reference signal exists on the transmission resource, and the second sequence is used to indicate that the reference signal does not exist on the transmission resource.
  22. 根据权利要求19至21中任一项所述的通信装置，其特征在于，所述处理单元还用于：The communication device according to any one of claims 19 to 21, wherein the processing unit is further configured to:
    在预设时段内控制所述发送单元发送所述功耗节省信号或所述第一属性的功耗节省信号或所述第二属性的功耗节省信号。Controlling the sending unit to send the power saving signal or the first attribute power saving signal or the second attribute power saving signal within a preset time period.
  23. 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中存储了计算机程序，当所述计算机程序被处理器执行时，使得处理器执行权利要求1至7中任一项所述的方法。A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, causes the processor to execute any one of claims 1 to 7. The method described.
  24. 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中存储了计算机程序，当所述计算机程序被处理器执行时，使得处理器执行权利要求8至11中任一项所述的方法。A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, causes the processor to execute any one of claims 8 to 11. The method described.
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