WO2020088455A1 - Procédé de communication et appareil de communication - Google Patents

Procédé de communication et appareil de communication Download PDF

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Publication number
WO2020088455A1
WO2020088455A1 PCT/CN2019/114017 CN2019114017W WO2020088455A1 WO 2020088455 A1 WO2020088455 A1 WO 2020088455A1 CN 2019114017 W CN2019114017 W CN 2019114017W WO 2020088455 A1 WO2020088455 A1 WO 2020088455A1
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WIPO (PCT)
Prior art keywords
time
terminal device
time position
offset
candidate
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PCT/CN2019/114017
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English (en)
Chinese (zh)
Inventor
陈铮
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华为技术有限公司
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Publication of WO2020088455A1 publication Critical patent/WO2020088455A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • 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
    • H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
    • 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
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communication, and more specifically, to a communication method and communication device.
  • the terminal device can detect the physical downlink control channel (physical downlink control channel, PDCCH) during the active time (DRX) of the DRX cycle, and shut down the receiving circuit into the sleep state in the remaining period, thereby Reduce the power consumption of the terminal.
  • PDCCH physical downlink control channel
  • the activation time includes "onduration" time.
  • the terminal device In a DRX cycle, the terminal device first wakes up from the sleep state, turns on the radio frequency and baseband circuits, obtains time-frequency synchronization, and then detects the PDCCH within the "onduration" time. These processes require a lot of power consumption. If the network device does not have any data scheduling for the terminal device within the "onduration" time, unnecessary energy consumption is generated for the terminal device. Therefore, in order to further save power consumption, a technology combining the wakeup signal (WUS) and the DRX mechanism is introduced in the NR. Specifically, for terminal devices that support WUS, each “on duration” of the DRX cycle corresponds to a WUS time at which WUS is sent.
  • WUS wakeup signal
  • the network device determines whether to send WUS at the time of WUS according to the needs of scheduling data, and The terminal device needs to detect WUS at the WUS moment to determine whether the network device sends WUS.
  • the terminal device when the terminal device is in the sleep state, it can be in a state of extremely low power consumption, for example, the terminal device only turns on a part of the modem (modem) function or uses a simple receiving circuit to detect and demodulate WUS, on the other hand If the device does not detect the WUS signal at the WUS moment or the WUS signal indicates that the terminal device does not have data scheduling at the corresponding "onduration" time, the terminal device can directly enter the sleep state without detecting the PDCCH at the "onduration" time. Therefore, by combining the WUS and DRX mechanisms, the power consumption of the terminal device can be further reduced.
  • the DRX cycle and the WUS time cycle of the multiple terminal devices, as well as the location of "onduration" in the time domain and the location of the WUS time in the time domain, may be different.
  • For network devices if you want to wake up these terminal devices, you need to send WUS at many different WUS moments, which means that more time-frequency resources are needed to send WUS, which increases the consumption and burden of network-side resources.
  • the present application provides a communication method and a communication device, which can save resources of network equipment and improve system resource utilization.
  • a communication method which includes:
  • N first time regions are determined according to the first candidate time position, the duration of the first time area, and the N first offsets configured for at least one terminal device, respectively, and the first candidate time position is a plurality of candidate times Any candidate time location in the location, the multiple candidate time locations are periodically distributed in the time domain, the N offsets are different, N is an integer greater than or equal to 1, and the at least one terminal device Each terminal device is configured with one of the N different first offsets;
  • the multiple candidate time positions are for the terminal device group.
  • the candidate time position corresponding to each first time position of each terminal device in the terminal device group belongs to the multiple candidate time positions.
  • each terminal device in the terminal device group is configured with the duration of the first time zone.
  • the network device may send the first signal in the form of DTX at the candidate time position, or may send the first signal at the candidate time position in each cycle, which is not limited in this application.
  • the first time position may be the starting position corresponding to the DRX cycle, or the starting position corresponding to the "on duration" of the DRX cycle, or the starting position corresponding to the starting position corresponding to the DRX cycle or "on duration”.
  • Time slot or subframe The terminal device may start a first timer (the first timer may be a drx-onDurationTimer) on the starting time slot or subframe (ie, the first time position), or may start to detect the first channel.
  • the first time position may be the starting position of the activation period (Active time) of the terminal device DRX cycle, and the DRX cycle activation time includes the length of "onduration" or the first timing The length of the device.
  • activation period please refer to the technology in the existing DRX mechanism, which will not be repeated here.
  • the first time position may be the time position of the search space of the PDCCH of the terminal device, such as the time position of the downlink control channel search space closest to the candidate time position.
  • the first time position may be the time position of the PDCCH search space closest to the candidate time position on the secondary carrier (SCell) after the terminal device is activated.
  • SCell secondary carrier
  • the network device configures one of the N different first offsets for each terminal device in the terminal device group.
  • the first offset configured by the network device for different terminal devices in the terminal device group may be the same or different, that is, if the terminal device group includes J terminal devices, 1 ⁇ N ⁇ J.
  • the unit of the first offset may be ms or subframes or time slots, but this embodiment of the present application does not limit this.
  • the unit of W may be the same as the unit of the first offset.
  • the value of the first offset may be 2ms, 3ms, 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, etc.
  • N first time regions correspond to N first offsets in one-to-one correspondence. That is, for each first offset, a first time zone can be determined. It should be understood that the N first time regions correspond to the first candidate time positions, and the determined first time regions are different for the candidate time positions in different candidate time position periods.
  • the time distance between the start time position of the first time zone and the first candidate time position determined according to the first offset is the first offset. That is, the time distance between the start time position of each first time zone and the first candidate time position is one of N first offsets, and the start time position of each first time zone
  • the time distance between the first candidate time position and the first candidate time position are different from each other, but the present application is not limited to this, for example, between the start time position of the first time zone and the first candidate time position determined according to the first offset
  • the time distance of may also be greater than the first offset.
  • the "the first signal is used to indicate whether the terminal device in the at least one terminal device whose first time position is within the first time area detects the first channel from the first time position" means, The first signal is used to indicate whether several terminal devices start to detect the first channel or stop detecting the first channel from at least one corresponding first time position, wherein each of the plurality of terminal devices corresponds to the At least one first time position is located in the first time area corresponding to the terminal device.
  • the first signal may indicate whether the terminal device has changed from the one or more first time The location starts to detect the first channel or stops detecting the first channel.
  • the time distance between the start time position of the first time zone where the first time position of any terminal device is located and the first candidate time position is the first offset configured for the terminal device.
  • step of “sending the first signal to the at least one terminal device at the first candidate time position may or may not be performed”.
  • the network device sends the first signal at the first candidate time position. If any terminal device in the terminal device group whose first time position is in the first time zone does not need to detect the first channel from the first time position in the corresponding first time zone, the network device may not be in the first Send any signal at the candidate time position.
  • the network device can The first signal is sent at a candidate time position. It should be understood that the first signal sent in the second implementation manner may be different from the first signal sent in the second implementation manner.
  • the first channel is a downlink control channel
  • the first time position is the starting time position of the discontinuous reception activation time of the terminal device.
  • the WUS time needs to be configured separately to send WUS, which means that more time-frequency resources are needed to send WUS, thereby increasing the consumption of network-side resources With burden.
  • the candidate time position may be associated with multiple first offsets or multiple terminal devices, and multiple first time regions may be determined according to the multiple first offsets.
  • the first signal corresponding to the first time area may instruct the multiple terminal devices to start or stop detecting the first channel from the corresponding first time position, In this way, even if the cycle of the candidate time position of the terminal device (that is, an example of the DRX cycle) and the offset are different, the purpose of multiplexing the same first signal by multiple terminal devices can be achieved. In other words, the network device does not need to send the first signal (that is, an example of the WUS signal) on different time or frequency domain resources for each terminal device, which can save network device resources and improve system resource utilization .
  • At least one bit of information bits carried in the first signal corresponds to at least one time unit in each first time zone, the At least one bit is used to indicate whether the terminal device in the at least one terminal device whose first time position is within the at least one time unit detects the first channel from the first time position.
  • the terminal device can indicate whether the terminal device detects the first channel through fewer information bits, thereby saving signaling overhead.
  • the first signal includes L information bits, and the first time region is composed of P time units.
  • P ⁇ L ⁇ 1 For example, P ⁇ L ⁇ 1, and P and L are both integers.
  • each information bit corresponds to at least one time unit among P time units included in each first time region.
  • L information bits are used to indicate whether the terminal device in the terminal device group whose first time position is within P time units starts to detect the first channel from the first time position.
  • the L information bits are used to indicate whether several terminal devices start to detect the first channel or stop detecting the first channel from at least one corresponding first time position, wherein each terminal in the plurality of terminal devices The at least one first time position corresponding to the device is located in the first time area corresponding to the terminal device.
  • Means round down Means round up.
  • Each information bit is used to indicate whether the terminal device in the terminal device group whose first time position is within the time unit corresponding to the information bit detects the first channel from the first time position.
  • the L information bits may correspond to time units in the first time area from high to low, but this embodiment of the present application does not limit this.
  • L information bits correspond to P time units in each first time region.
  • Each of the P time units included in each first time region corresponds to multiple information bits among the L information bits.
  • the multiple information bits are used to indicate whether the terminal device in the terminal device group whose first time position is in the time unit corresponding to the multiple information bits starts to detect the first channel from the first time position.
  • the L information bits are used to indicate whether several terminal devices start to detect the first channel or stop detecting the first channel from at least one corresponding first time position, wherein each terminal in the plurality of terminal devices The at least one first time position corresponding to the device is located in the first time area corresponding to the terminal device.
  • the time unit may be a time slot or a subframe, but this embodiment of the application is not limited to this, for example, the time unit may also be a mini-slot or a symbol.
  • the unit of the duration of the first time zone and the unit of the time unit may be the same, or the granularity of the duration of the first time zone is one time unit, for example, if the duration of the first time zone is 10 ms or 10 sub In the frame, the first time area may be composed of 10 subframes, but this embodiment of the present application does not limit this.
  • the first signal includes L information bits, and the first time area is composed of P time units.
  • P ⁇ L ⁇ 1 and both P and L are integers.
  • each of the L information bits corresponds to a total of P times included in one of the N first time regions in the first time region At least one time unit in the unit.
  • the number of time units corresponding to each information bit in the L information bits is or or or or The first time region corresponding to each information bit in the L information bits may be indicated according to higher layer signaling configuration or downlink control information (downlink control information, DCI) signaling.
  • DCI downlink control information
  • the time unit indicated by the lth information bit of the L information bits is located on the pth time unit in the first time region, 1 ⁇ p ⁇ P, 1 ⁇ l ⁇ L, and both l and p are integers.
  • the p-th time unit is an index or time unit numbered p-1.
  • the period of the plurality of candidate time positions is equal to the duration of the first time area.
  • the time distance between the first time position of the terminal device and the first candidate time position is configured for all The sum of the first offset of the terminal device and the second offset of the terminal device, the second offset is greater than or equal to 0 and less than the duration of the first time zone.
  • the network device may first determine the offset of the first time position in the corresponding first time zone from the first time zone Shift amount (ie, second offset), and then determine the information bit corresponding to the first time position according to the second offset, thereby determining the first signal.
  • first time zone Shift amount ie, second offset
  • the second offset is greater than or equal to 0 and less than the duration of the first time zone.
  • the unit of the second offset may be ms, or the granularity of the second offset may be a subframe or a time slot, but this embodiment of the present application does not limit this.
  • T is the first offset configured for the terminal device
  • t is the second offset of the terminal device
  • R is the period of the multiple candidate time positions
  • o is the multiple of the multiple candidate time positions Offset.
  • the value range of t is: 0 ⁇ t ⁇ W-1 or 0 ⁇ t ⁇ W.
  • the calculation formula of the first time position Q (that is, the slot where the first time position is located) is:
  • n t, f is the frame number where the first time position is located, The time slot number where the first time position is located.
  • the calculation formula of the first time position Q (that is, the subframe where the first time position is located) is:
  • n t, f is the frame number where the first time position is located
  • a communication method including:
  • the second offset is determined according to the first time position, the period of the candidate time position of the first signal, the first offset configured for the terminal device, and the duration of the first time area, the first time position is located in the first Within a time zone;
  • a first candidate time position from a plurality of candidate time positions of the first signal according to the first time position, the first offset, and the second offset
  • the positions are periodically distributed in the time domain according to the period of the candidate time position
  • the terminal device is any terminal device in the foregoing terminal device group, and the first time position is any time position among a plurality of first time positions that may be periodically distributed.
  • the terminal device may determine the second offset according to the first time position, the period of the candidate time position of the first signal, the first offset configured for the terminal device, and the duration of the first time area, Furthermore, the candidate time position corresponding to the first time position (ie, the first candidate time position) can be determined according to the second offset, and further, whether to select from The first time position starts to detect the first channel. Specifically, the terminal device detects the first signal at the first candidate time position, then the terminal device # 1 may determine whether to detect the first channel from the first time position according to the first signal. If the terminal device does not detect the first signal at the first candidate time position, the terminal device does not detect the first channel from the first time position.
  • the method further includes:
  • the first time zone where the first time position is located is determined according to the second offset and the duration of the first time zone.
  • the time distance between the start position of the first time zone where the first time position is located and the first candidate time position is the The first offset.
  • the time distance between the first candidate time position and the first time position is the first offset and the second The sum of the offsets.
  • the second offset is the time distance between the first time position and the start time position of the first time zone, so The second offset is greater than or equal to 0 and less than the duration of the first time zone.
  • Q is the first time position
  • T is the first offset
  • t is the second offset
  • R is the period of the candidate time position of the first signal
  • o is the offset of the candidate time position of the first signal.
  • the calculation formula of the first time position Q (that is, the slot where the first time position is located) is:
  • n t, f is the frame number where the first time position is located, The time slot number where the first time position is located.
  • the calculation formula of the first time position Q (that is, the subframe where the first time position is located) is:
  • n t, f is the frame number where the first time position is located
  • the determining whether to detect the first channel from the first time position according to the detection result of the first signal includes:
  • the first signal includes L information bits
  • the first time region is composed of P time units, P ⁇ L ⁇ 1, and P And L are integers;
  • the determining at least one bit of the information bits carried by the first signal according to the second offset includes:
  • the determining whether to detect the first channel from the first time position according to the at least one bit includes:
  • the first information bit determine whether to detect the first channel from the first time position.
  • the period of the candidate time position is the same as the duration of the first time area.
  • the first channel is a downlink control channel
  • the first time position is a starting time position of the discontinuous reception activation time of the terminal device.
  • a communication device including various modules or units for performing the method in the first aspect or any possible implementation manner of the first aspect.
  • a communication device including a processor.
  • the processor is coupled to the memory and can be used to execute the instructions in the memory to implement the method in the first aspect or any possible implementation manner of the first aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, the processor is coupled to the communication interface, and the communication interface is controlled to implement communication with other network elements.
  • the communication device is a network device.
  • the communication interface may be a transceiver or an input / output interface.
  • the communication device is a chip configured in a network device.
  • the communication interface may be an input / output interface.
  • the transceiver may be a transceiver circuit.
  • the input / output interface may be an input / output circuit.
  • a communication device including various modules or units for performing the method in the second aspect or any possible implementation manner of the second aspect.
  • a communication device including a processor.
  • the processor is coupled to the memory, and can be used to execute instructions in the memory to implement the second aspect or the method in any possible implementation manner of the second aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, the processor is coupled to the communication interface, and the communication interface is controlled to implement communication with other network elements.
  • the communication device is a terminal device.
  • the communication interface may be a transceiver or an input / output interface.
  • the communication device is a chip configured in the terminal device.
  • the communication interface may be an input / output interface.
  • the transceiver may be a transceiver circuit.
  • the input / output interface may be an input / output circuit.
  • a processor including: an input circuit, an output circuit, and a processing circuit.
  • the processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes any one of the first aspect to the second aspect and any possible implementation manner of the first aspect to the second aspect The method.
  • the processor may be a chip
  • the input circuit may be an input pin
  • the output circuit may be an output pin
  • the processing circuit may be a transistor, a gate circuit, a flip-flop, and various logic circuits.
  • the input signal received by the input circuit may be received and input by, for example, but not limited to a receiver
  • the signal output by the output circuit may be, for example but not limited to, output to and transmitted by the transmitter
  • the circuit may be the same circuit, which is used as an input circuit and an output circuit at different times, respectively.
  • the embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.
  • a processing device including a processor and a memory.
  • the processor is used to read instructions stored in the memory, and can receive signals through the receiver and transmit signals through the transmitter to perform any of the first aspect to the second aspect and any possible implementation manner of the first aspect to the second aspect Methods.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory and the processor are provided separately.
  • the memory may be a non-transitory (non-transitory) memory, such as a read-only memory (read only memory, ROM), which may be integrated with the processor on the same chip, or may be separately set in different On the chip, the embodiments of the present application do not limit the type of memory and the manner of setting the memory and the processor.
  • a non-transitory memory such as a read-only memory (read only memory, ROM)
  • ROM read only memory
  • sending instruction information may be a process of outputting instruction information from the processor
  • receiving capability information may be a process of receiving input capability information by the processor.
  • the processed output data may be output to the transmitter, and the input data received by the processor may come from the receiver.
  • the transmitter and the receiver may be collectively referred to as a transceiver.
  • the processing device in the eighth aspect may be a chip, and the processor may be implemented by hardware or software.
  • the processor When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc .; when implemented by software
  • the processor may be a general-purpose processor, implemented by reading software codes stored in a memory, the memory may be integrated in the processor, or may be located outside the processor and exist independently.
  • a computer program product includes: a computer program (may also be referred to as code or instructions) that, when the computer program is executed, causes the computer to perform the first to the foregoing aspects The method in the second aspect and any possible implementation manner of the first aspect to the second aspect.
  • a computer-readable medium that stores a computer program (which may also be referred to as code or instructions), which when executed on a computer, causes the computer to perform the above-mentioned first to thirteenth aspects
  • a computer program which may also be referred to as code or instructions
  • a communication system including the aforementioned network device and terminal device.
  • the candidate time position may be associated with multiple first offsets or multiple terminal devices, and multiple first time regions may be determined according to the multiple first offsets.
  • the first signal corresponding to the first time area may instruct the multiple terminal devices to start or stop detecting the first channel from the corresponding first time position.
  • the network device does not need to send the first signal (that is, an example of the WUS signal) on different time or frequency domain resources for each terminal device, which can save network device resources and improve system resource utilization .
  • FIG. 1 is a schematic block diagram of a communication system applicable to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a downlink time-frequency resource grid.
  • Figure 3 is a schematic diagram of a typical DRX cycle.
  • Figure 4 is an example of DRX cycle time domain location.
  • FIG. 5 is a schematic diagram of DRX cycle time domain positions of different terminal devices.
  • FIG. 6 is a schematic diagram of the combination of WUS and DRX mechanism.
  • FIG. 7 is a schematic diagram of a candidate time position.
  • FIG. 8 is a schematic flowchart of a communication method provided by the present application.
  • FIG. 9 is a schematic diagram of the positional relationship between the first candidate time position, the first offset, and the first time area in the time domain.
  • FIG. 10 is a schematic diagram of the positional relationship between the first time period, the first candidate time position, and the first time area in the time domain.
  • FIG. 11 is a schematic flowchart of a communication method provided by this application.
  • FIG. 12 is a schematic diagram of different terminal devices in the same group detecting the first signal.
  • 13 is another schematic diagram of different terminal devices in the same group detecting the first signal.
  • FIG. 14 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • 15 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • 16 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • GSM global mobile communication
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • general packet radio service general packet radio service, GPRS
  • LTE long term evolution
  • LTE frequency division duplex FDD
  • TDD time division duplex
  • UMTS universal mobile communication system
  • WiMAX worldwide interoperability for microwave access
  • FIG. 1 shows a schematic diagram of a communication system applicable to an embodiment of the present application.
  • the communication system 100 may include at least one network device, such as the network device 110 shown in FIG. 1; the communication system 100 may also include at least one terminal device, such as the terminal device 120 shown in FIG. 1.
  • the network device 110 and the terminal device 120 can communicate through a wireless link.
  • Each communication device, such as the network device 110 or the terminal device 120 may be configured with multiple antennas, and the multiple antennas may include at least one transmit antenna for transmitting signals and at least one receive antenna for receiving signals.
  • each communication device additionally includes a transmitter chain and a receiver chain.
  • transmitter chain and a receiver chain.
  • receiver chain can include multiple components related to signal transmission and reception (such as processors, modulators, and multiplexers) , Demodulator, demultiplexer or antenna, etc.).
  • the network device in the wireless communication system may be any device having a wireless transceiver function.
  • the device includes but is not limited to: evolved Node B (evolved Node B, eNB), radio network controller (Radio Network Controller, RNC), Node B (Node B, NB), base station controller (Base Station Controller, BSC) , Base transceiver station (Base Transceiver Station, BTS), home base station (for example, Home evolved NodeB, or Home Node B, HNB), baseband unit (BaseBand Unit, BBU), wireless fidelity (Wireless Fidelity, WIFI) system Access point (Access Point, AP), wireless relay node, wireless backhaul node, transmission point (transmission point, TP) or sending and receiving point (transmission and reception point, TRP), etc., can also be 5G, such as NR , GNB in the system, or transmission point (TRP or TP), one or a group (including multiple antenna panels) of an antenna panel of a base station
  • gNB may include a centralized unit (CU) and DU.
  • the gNB may also include a radio unit (RU).
  • CU implements some functions of gNB
  • DU implements some functions of gNB, for example, CU implements radio resource control (RRC), packet data convergence layer protocol (packet, data, protocol, PDCP) layer functions
  • RRC radio resource control
  • packet data convergence layer protocol packet, data, protocol, PDCP
  • DU implements wireless chain The functions of the radio link (control, RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer.
  • RRC radio resource control
  • MAC media access control
  • PHY physical
  • the network device may be a CU node, or a DU node, or a device including a CU node and a DU node.
  • the CU can be divided into network devices in the radio access network (RAN), and can also be divided into network devices in the core network (CN), which is not limited in this application.
  • RAN radio access network
  • CN core network
  • terminal equipment in the wireless communication system may also be referred to as user equipment (user equipment (UE), access terminal, subscriber unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, User terminal, terminal, wireless communication device, user agent or user device.
  • user equipment user equipment
  • access terminal subscriber unit
  • user station mobile station
  • mobile station mobile station
  • remote station remote terminal
  • mobile device User terminal
  • terminal wireless communication device
  • user agent user device
  • the terminal device in the embodiment of the present application may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, and an augmented reality (AR) terminal
  • Wireless terminals in equipment industrial control (industrial control), wireless terminals in self-driving (self-driving), wireless terminals in remote medical (remote medical), wireless terminals in smart grid (smart grid), transportation safety ( Wireless terminals in transportation, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the embodiments of the present application do not limit the application scenarios.
  • the basic unit in the frequency domain is a subcarrier, and the subcarrier spacing (SCS) can be 15KHz, 30KHz, and so on.
  • the unit of uplink / downlink frequency domain resources is a physical resource block (PRB). Each PRB consists of 12 consecutive subcarriers in the frequency domain.
  • 2 is a schematic diagram of a downlink time-frequency resource grid.
  • each element on the resource grid is called a resource element (resource element, RE).
  • RE is the smallest physical resource.
  • a RE contains an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM ) A subcarrier within the symbol.
  • OFDM orthogonal frequency division multiplexing
  • the uplink time-frequency resource grid is similar to the downlink.
  • the basic time unit of downlink resource scheduling in NR is a slot. Generally speaking, a slot consists of 14 OFDM symbols in time.
  • NR transmission is organized into frames with a time length of 10ms, each frame is divided into 10 subframes of the same size and a length of 1ms, and each subframe can contain one or more
  • the time slot for example, when the subcarrier is 15 kHz, it is determined that each subframe contains a time slot according to the subcarrier interval.
  • Each frame is identified by a system frame number (SFN).
  • SFN system frame number
  • the period of SFN is equal to 1024, so SFN repeats itself after 1024 frames.
  • the number of time slots contained in a frame is related to the size of subcarrier spacing (SCS).
  • SCS subcarrier spacing
  • the number of time slots in a frame Value range is among them It is the number of time slots contained in the frame.
  • CP cyclic prefix
  • Normal normal cyclic prefix
  • ⁇ is a value related to the size of SCS.
  • the relationship between the value of ⁇ and the size of SCS is shown in Table 2:
  • the network device transmits a physical downlink shared channel (physical downlink shared channel, PDSCH) and a physical downlink control channel (physical downlink control channel, PDCCH) for the terminal device.
  • PDSCH physical downlink shared channel
  • PDCCH physical downlink control channel
  • the terminal device needs to demodulate the PDCCH first.
  • the downlink control information (DCI) carried in the PDCCH contains relevant information required to receive the PDSCH, such as the location of the PDSCH time-frequency resources and the size of the time-frequency resources. Antenna configuration information, etc.
  • the terminal device may be in different states, one of which is the radio resource control connection state (RRC_CONNECTED).
  • RRC_CONNECTED the terminal device has established a radio resource control (RRC) connection, that is, the parameters necessary for communication between the terminal device and the network device are known to both.
  • RRC_CONNECTED state is mainly used for the terminal device Perform data transfer.
  • DRX discontinuous reception
  • the network device may configure the DRX cycle (DRX cycle) for the terminal device in the RRC_CONNECTED state.
  • Figure 3 shows a typical DRX cycle.
  • a DRX cycle may include an "on duration" period (or the first period in this patent).
  • the time period is the length of the timer drx-onDurationTimer.
  • the timer can be understood as a period of time starting from the start position of the DRX cycle.
  • the terminal device can start the timer within a certain time slot. Signaling configuration.
  • the terminal device can detect the PDCCH; if within the "onduration" period, the terminal device does not detect the PDCCH, the terminal device can turn off the receiving circuit and enter the sleep state, thereby reducing the terminal's power consumption.
  • each terminal device can be configured with two DRX cycle parameters: drx-LongCycle (ranging from 10 to 10240ms) and drx-ShortCycle (ranging from 2 to 640ms), one for the long DRX cycle (Long DRX cycle), The other is the short DRX cycle (Short DRX cycle).
  • the terminal device can obtain the SFN where the starting position of "onduration" and the subframe number in the frame according to the following formula (1):
  • V is the DRX cycle used by the terminal device. If the terminal device uses a long DRX cycle, then the value of V is drx-LongCycle, and the value of Y at this time is the parameter drx-StartOffset, which can be configured by high-level signaling, the unit is 1ms . If the UE uses a short DRX cycle, then the value of V is drx-ShortCycle, and the value of Y at this time is (drx-StartOffset) modulo (drx-ShortCycle), which can be configured by higher layer signaling, and the unit is also 1ms. The Y value is the offset of DRX.
  • the Y value can be understood as the offset of the starting position of "onduration" (or the starting position of DRX cycle) relative to the reference point, the unit is ms.
  • the starting position of "on duration” can also be understood as the starting position of DRX cycle.
  • the SFN number ranges from 0 to 1023
  • the subframe number ranges from 0 to 9.
  • the scheduling unit of NR is a time slot, and for subcarriers greater than 15kHz, a subframe can contain multiple time slots (such as 60kHz SCS, a subframe can contain 4 time slots), so the high layer
  • the signaling configures the terminal device with the parameter drx-SlotOffset, and the terminal device uses this parameter to further determine the time slot where the start time position of "onduration" is located.
  • the terminal device can start a timer in the determined time slot, the length of the timer (which can be understood as the "onduration" time length) is configured by high-level signaling, and the terminal device detects the PDCCH within the time range of the timer; If the terminal device does not detect the PDCCH within the time range of the timer, the terminal device enters the sleep state after the timer expires.
  • the SCS at 60 kHz as an example, refer to FIG. 4, which is an example of a DRX cycle time domain position example.
  • the periods are all V, but the Y values are different (ie, Y1 ⁇ Y2), so the "onduration" time-domain positions of the two terminal devices are different.
  • the time domain position of the "onduration" of the terminal device is related to the parameters V, Y and even drx-SlotOffset.
  • the terminal device will work in a larger RF and baseband bandwidth, and in a DRX cycle, the terminal device needs to first wake up from the sleep state, turn on the RF and baseband circuit, obtain time-frequency synchronization, and then on the "duration" Detecting the PDCCH during the period, these processes require a lot of energy consumption. Generally speaking, data transmission tends to be bursty and sparse in time. If the network device does not have any data scheduling for the terminal device during the activation period, unnecessary energy consumption is generated for the terminal device. Therefore, in order to save power consumption, a method of combining a wake-up signal (WUS) and a DRX mechanism in the RRC_CONNECTED state is introduced in the NR.
  • WUS wake-up signal
  • FIG. 6 is a schematic diagram of an example of the combination of WUS and DRX mechanism.
  • WUS WUS moment
  • WUS offset WUS offset
  • the network device can send WUS in DTX form for the terminal device at WUS time, that is, the network device decides whether to send WUS at WUS time according to the demand of scheduling data, and the terminal device needs to detect WUS at WUS time to determine whether the network device sends WUS.
  • the terminal device can directly enter the sleep state without detecting the PDCCH during the "onduration" period .
  • the terminal device detects WUS at the time of WUS, or the detected WUS indicates that the terminal device has data scheduling during the "on duration” period, then the terminal device will enter the wakeup state from the sleep state, that is, the terminal The device can start the timer according to the DRX mechanism process described above to detect the PDCCH. At this time, the terminal device needs enough time to enable all modem functions, so that the terminal device can detect the PDCCH from the beginning of the "onduration" period. , Receive data channel.
  • the network device sends a corresponding WUS according to the DRX cycle used by each terminal device, the parameter drx-StartOffset, the parameter drx-SlotOffset, and the parameter WUSoffset.
  • Terminal devices can share a WUS, that is, a WUS sent at a WUS moment can be used to indicate whether a group of terminal devices with the same parameters needs to detect the PDCCH during the "onduration" period in the DRX cycle.
  • the present application provides a communication method that provides the possibility of multiplexing the same WUS for at least one different terminal device in the DRX cycle, parameter drx-StartOffset, and parameter drx-SlotOffset, thereby helping to save the network device sending WUS Required resources to improve system resource utilization.
  • the candidate time positions in this application are periodically distributed in the time domain.
  • FIG. 7 a schematic diagram of a candidate time position is shown in FIG. 7.
  • the first time position may be the starting position corresponding to the DRX cycle, or the starting position corresponding to the "on duration" of the DRX cycle, or the starting position corresponding to the starting position corresponding to the DRX cycle or "on duration”.
  • Time slot or subframe The terminal device may start a first timer (the first timer may be a drx-onDurationTimer) on the starting time slot or subframe (ie, the first time position), or may start to detect the first channel.
  • the first time position may be the starting position of the activation period (Active time) of the terminal device DRX cycle, and the DRX cycle activation time includes the length of "onduration" or the first timing The length of the device.
  • activation period please refer to the technology in the existing DRX mechanism, which will not be repeated here.
  • the first time position may be the time position of the search space of the PDCCH of the terminal device, such as the time position of the downlink control channel search space closest to the candidate time position.
  • the first time position may be the time position of the PDCCH search space closest to the candidate time position on the secondary carrier (SCell) after the terminal device is activated.
  • SCell secondary carrier
  • the network device may send the first signal in the form of DTX at the candidate time position, or may send the first signal at the candidate time position in each cycle, which will be described in detail below.
  • the network device may send a first signal at the candidate time position to indicate whether the terminal device starts to detect the first channel from the corresponding first time position.
  • the first signal may be a "wake up signal” (WUS) or a “power saving signal”, but this application is not limited to this.
  • the terminal device If the first signal instructs the terminal device to detect the first channel from the corresponding first time position, the terminal device starts to detect the first channel from the first time position.
  • the terminal device may detect the first channel within a first time period starting from the first time position, and the first time period may be a time length of "onduration" or a time length of the first timer, Or the length of the activation period of the DRX cycle, or the time zone composed of K consecutive time slots / subframes, K is not less than 1. That is, the terminal device can detect the first channel within the first time period according to the related configuration of the first channel (such as the detection period and the offset value).
  • the terminal device may stop detecting the first channel after the first period of time, and at the same time shut down the receiving or sending circuit to enter the sleep state. If the first signal does not instruct the terminal device to detect the first channel from the first time position, or the first signal instructs the terminal device not to detect the first channel from the first time position, the terminal device may directly enter the sleep state, in the DRX The terminal device does not need to detect the first channel in the cycle.
  • the network device may not send the first signal at the candidate time position. If the terminal device does not detect the first signal at the corresponding candidate time position, the terminal device does not need to detect the first channel from the corresponding first time position or the first channel. The first channel is detected within a period of time.
  • the network device may send a first signal at the candidate time position to indicate whether the terminal device stops detecting the first channel from the first time position.
  • the first signal may be called a "sleep signal" (go to sleep, GTS), but this application is not limited to this.
  • the terminal device may stop detecting the first signal within the first time period from the first time position.
  • the first time period may be the time length of "onduration", or the time length of the first timer, or the length of the activation period of the DRX cycle, or the time composed of K consecutive time slots / subframes
  • the area, or the length of DRX cycle, K is not less than 1.
  • the terminal device stops detecting the first channel within the first time period and continues to enter the sleep state. If the first signal does not instruct the terminal device to stop detecting the first channel within the first time period, or the first signal indicates that the terminal device does not stop detecting the first channel within the first time period, the terminal device starts detecting the first channel from the first time position One channel.
  • the network device may not send the first signal at the candidate time position. If the terminal device does not detect the first signal at the corresponding candidate time position, the terminal device does not need to stop detecting the first channel from the corresponding first time position or at the first time. Stop detecting the first channel within a period of time.
  • the first channel may be a PDCCH or a data channel PDSCH, which is not limited in this embodiment of the application.
  • first channel may also be replaced with a reference signal or other signal used for channel state information (channel state information (CSI) measurement or time-frequency tracking / synchronization).
  • CSI channel state information
  • the candidate time position may be determined according to the period of the candidate time position and the offset of the candidate time position.
  • the unit of the period of the candidate time position and the offset of the candidate time position is generally a slot, but may also be a subframe (ie, ms), which is not limited in this embodiment of the present application.
  • the unit of the period of the candidate time position and the unit of the offset of the candidate time position are the same. It should be understood that the period of the candidate time position is the length of time between two adjacent candidate time positions.
  • the candidate Frame number n f and time slot number where the time position is located Meet the following formula (2):
  • the offset of the candidate time position may be understood as the time offset of the candidate time position relative to the reference point, and the frame number where the reference point is located And the slot number Satisfy the following formula (3):
  • the candidate time position is behind the reference point, and the time distance from the reference point is the offset.
  • the unit of the period of the candidate time position and the offset of the candidate time position is a subframe or ms
  • record the period of the candidate time position as R and the offset of the candidate time position as o then as an example and not a limitation ,
  • the frame number n f where the candidate time position is located and the sub frame number n sf satisfy the following formula (4):
  • the offset of the candidate time position can be understood as the time offset relative to the reference point, and the frame number where the reference point is located And the subframe number Satisfy the following formula (5):
  • the candidate time position is behind the reference point, and the time distance from the reference point is the offset.
  • the slot position of the candidate time position in the subframe where it is located may be configured by higher layer signaling.
  • the first time position when the first time position is the starting position corresponding to the DRX cycle, or the starting position corresponding to the "onduration" of the DRX cycle, the first time position can be directly determined according to formula (1), here No longer. If the first time position is the time position of the downlink control channel search space of the terminal device, the first time position may be determined according to the period of the PDCCH search space and the offset value (unit is slot). The method is the same as the method for determining the candidate time position. Repeat again.
  • 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 internal logic, and should not be applied to the embodiments of this application
  • the implementation process constitutes no limitation.
  • terminal devices and network devices are mainly used as execution bodies to explain the corresponding steps or methods.
  • the execution bodies of these steps or methods may also be chips applied to terminal devices and applied to networks.
  • the chip of the device may also be used as a chip to explain the corresponding steps or methods.
  • FIG. 8 is a schematic flowchart of a communication method 200 provided by an embodiment of the present application.
  • the method 200 mainly introduces a process in which the network device sends the first signal at the first candidate time position from the perspective of the network device.
  • each step of the method 200 will be described in detail.
  • the network device determines N first time zones according to the first candidate time position, N different first offsets configured for the terminal device group, and the duration of the first time zone.
  • the first candidate time position is any candidate time position among a plurality of candidate time positions, and the plurality of candidate time positions are periodically distributed in the time domain.
  • the multiple candidate time positions are for the terminal device group.
  • the candidate time position corresponding to each first time position of each terminal device in the terminal device group belongs to the multiple candidate time positions. It should be noted that each terminal device in the terminal device group may not need to detect the first signal at each candidate time position of the plurality of candidate time positions.
  • the multiple candidate time positions may also be specific to a specific terminal device.
  • Each terminal device in the terminal device group is configured with a first duration W, and the terminal device group includes at least one (ie, one or more) terminal devices.
  • the first duration is the duration of the first time zone. That is, the duration of the first time zone of each terminal device in the terminal device group or the duration of the first time zone corresponding to each terminal device is W. W is a value greater than 1.
  • the unit of W may be ms or slot, but this embodiment of the present application does not limit this.
  • the network device may configure the first duration W for each terminal device through high-layer signaling.
  • W may be equal to the period of the candidate time position, for example, all are 10 ms or 20 ms, or all are 10 slots or 20 slots.
  • the terminal device may directly obtain the duration of the first time area according to the period of the candidate time position, where the period of the candidate time position may be obtained through high-layer signaling.
  • the network device may configure one of the N different first offsets for each terminal device in the terminal device group.
  • the first offset configured by the network device for different terminal devices in the terminal device group may be the same or different, that is, if the terminal device group includes J terminal devices, 1 ⁇ N ⁇ J.
  • the terminal device group includes terminal device # 1, terminal device # 2, and terminal device # 3.
  • the network device may configure terminal device # 1 with a first offset of T1 and terminal device # 2.
  • the value is the first offset of T2, and the first offset of T3 is configured for terminal device # 3; or, the network device may configure the first offset of T1 for both terminal device # 1 and terminal device # 2 Amount T1, configure terminal device # 3 with a first offset of T3; or, the network device may configure terminal device # 1, terminal device # 2, and terminal device # 3 with a first offset of T1 .
  • the unit of the first offset may be ms or subframe or time slot, but this embodiment of the present application does not limit this.
  • the unit of W may be the same as the unit of the first offset.
  • the value of the first offset may be 2ms, 3ms, 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, etc.
  • the network device may configure the first offset for each terminal device according to the capability information of each terminal device in the terminal device group.
  • terminal device # 1 in the terminal device group as an example for description.
  • terminal device # 1 can report its capability information to the network device, and the network device can determine the first offset of terminal device # 1 according to the capability information reported by terminal device # 1, and can determine the determined terminal device # 1
  • the first offset of 1 is allocated to terminal device # 1.
  • the capability information may be the minimum time required for terminal device # 1 to detect the first signal to detect the downlink control channel and receive the data channel, or the terminal device is in a low power consumption state (such as Deep sleep, Light sleep, Or Micro sleep (power) state to the minimum time required for a non-low power consumption state (such as Non-sleep power state), or the terminal device from the "sleep" state (only turn on some modem functions or use a simple receiving circuit)
  • the network device can select from the multiple first offsets configured by higher layer signaling the closest to the minimum time and greater than or equal to the minimum time according to the minimum time The first offset, and then configure the selected first offset as the first offset of terminal device # 1.
  • the N first time regions determined in S210 are in one-to-one correspondence with the N first offsets. That is, for each first offset, a first time zone can be determined.
  • N first time regions correspond to the first candidate time positions, and the determined first time regions are different for the candidate time positions in different candidate time position periods.
  • the time distance between the start time position of the first time zone and the first candidate time position determined according to the first offset is the first offset . That is, the time distance between the start time position of each first time zone and the first candidate time position is one of N first offsets, and the start time position of each first time zone
  • the time distance between the first candidate time position and the first candidate time position are different from each other, but the present application is not limited to this, for example, between the start time position of the first time zone and the first candidate time position determined according to the first offset
  • the time distance of may also be greater than the first offset.
  • FIG. 9 shows the relationship between the first candidate time position, the first offset, and the first time area.
  • T1 is the first offset of terminal device # 1
  • T2 is the first offset of terminal device # 2.
  • the first candidate time position is candidate time position # 1.
  • the distance between the start time position of the first time zone # 1 (an example of the first time zone) and the candidate time position # 1 is T1
  • the start of the first time zone # 2 is T2.
  • the network device determines a first time position or a first time period of each terminal device in the terminal device group.
  • the meaning of the first time position may be as described above, for example, the first time position may be the starting position of the "on duration" of the DRX cycle.
  • the first time position and / or the first time period of each terminal device can be determined by referring to the method described above, which will not be repeated here.
  • the network device sends a first signal to the terminal device group at the first candidate time position.
  • the first signal is used to indicate whether the terminal device in the terminal device group whose first time position is within the first time area starts detecting the first channel from the first time position or stops detecting the first channel.
  • the first signal is used to indicate whether several terminal devices start to detect the first channel or stop detecting the first channel from at least one corresponding first time position, wherein each of the plurality of terminal devices The corresponding at least one first time position is located in the first time area corresponding to the terminal device.
  • the first signal may indicate whether the terminal device has changed from the one or more first time The location starts to detect the first channel or stops detecting the first channel.
  • the time distance between the start time position of the first time zone where the first time position of any terminal device is located and the first candidate time position is the first offset configured for the terminal device.
  • the following uses the first signal to determine whether the terminal device detects the first channel from the first time position as an example.
  • the first time zone of the terminal device # 1 is the first time zone # 1
  • the first time zone of the terminal device # 2 is the first time zone # 2.
  • the first signal may indicate whether the terminal device # 1 detects the first channel from the starting position of the first time period # 11 and whether the terminal device # 2 detects the first channel from the starting position of the first time period # 21 .
  • the first signal may also indicate whether terminal device # 1 has fallen in the first time The other first time position in area # 1 starts to detect the first channel. It should also be understood that even if a certain first time position of the terminal device # 2 falls in the first time area # 1, the first signal cannot indicate whether the terminal device # 2 starts detecting the first channel from the first time position.
  • S230 may or may not be executed.
  • the network device sends the first signal at the first candidate time position. If any terminal device in the terminal device group whose first time position is in the first time zone does not need to detect the first channel from the first time position in the corresponding first time zone, the network device may not be in the first Send any signal at the candidate time position.
  • the network device can The first signal is sent at a candidate time position. It should be understood that the first signal sent in the second implementation manner may be different from the first signal sent in the second implementation manner.
  • the network device can determine whether the following conditions are true:
  • the terminal device # 1 needs to detect the first channel from the starting position of the first time period # 11;
  • Condition (2) The terminal device # 2 needs to detect the first channel from the starting position of the first time period # 21.
  • condition (1) and condition (2) are satisfied or both are satisfied, the network device can send the first signal at the first candidate time position; if neither condition (1) or condition (2) is satisfied , Then the network device may not send the first signal at the first candidate time position.
  • the first signal will be described in detail below.
  • the first signal includes L information bits (or source bits), L ⁇ 1, and L is an integer. It should be understood that information bits are bits that have not undergone channel coding processing.
  • the value of L can be specified by a protocol, but this embodiment of the present application does not limit this, for example, L can also be configured by a network device.
  • the first signal may carry a total of L information bits, or may carry more information bits than L information bits.
  • L may be the total number of terminal devices included in the terminal device group, and each of the L information bits corresponds to one terminal device in the terminal device group.
  • the L information bits correspond to the terminal devices in the terminal device group from large to small in order from high to low.
  • L 2
  • the terminal equipment group includes terminal equipment # 1 and terminal equipment # 2.
  • the positional relationship between the first time period of terminal device # 1 and terminal device # 2 and the first time zone is shown in FIG. 10, then when L information bits are "01", the first signal may indicate that terminal device # 1 The first channel is detected from the starting position of the first time period # 1 (ie, the first time position), and the terminal device # 2 does not need to start from the starting position of the first time period # 1 (ie, the first time position) The first channel of the detection signal. Or, conversely, when L information bits are "01", the first signal may indicate that terminal device # 1 does not need to detect the first channel from the beginning of the first time period # 1, while terminal device # 2 needs The first channel is detected from the beginning of the first time period # 1.
  • At least one information bit of the L information bits corresponds to at least one time unit in each first time zone, and the at least one information bit is used to indicate a first time position in the at least one terminal device Whether the terminal device located in the at least one time unit starts to detect the first channel from the first time position.
  • the first time zone is composed of P time units. Among them, P ⁇ L ⁇ 1, and P is an integer.
  • L information bits correspond to P time units in each first time zone. Each information bit corresponds to at least one time unit among P time units included in each first time region. Among them, L information bits are used to indicate whether the terminal device in the terminal device group whose first time position is within P time units starts to detect the first channel from the first time position. In other words, the L information bits are used to indicate whether several terminal devices start to detect the first channel or stop detecting the first channel from at least one corresponding first time position, wherein each terminal in the plurality of terminal devices The at least one first time position corresponding to the device is located in the first time area corresponding to the terminal device.
  • Means round down Means round up.
  • Each information bit is used to indicate whether the terminal device in the terminal device group whose first time position is within the time unit corresponding to the information bit detects the first channel from the first time position.
  • the L information bits may correspond to time units in the first time area from high to low, but this embodiment of the present application does not limit this.
  • L information bits correspond to P time units in each first time region.
  • Each of the P time units included in each first time region corresponds to multiple information bits among the L information bits.
  • the multiple information bits are used to indicate whether the terminal device in the terminal device group whose first time position is in the time unit corresponding to the multiple information bits starts to detect the first channel from the first time position.
  • the L information bits are used to indicate whether several terminal devices start to detect the first channel or stop detecting the first channel from at least one corresponding first time position, wherein each terminal in the plurality of terminal devices The at least one first time position corresponding to the device is located in the first time area corresponding to the terminal device.
  • the time unit may be a time slot or a subframe, but this embodiment of the application is not limited to this, for example, the time unit may also be a mini-slot or a symbol.
  • the unit of W and the time unit may be the same, or the granularity of W is a time unit, for example, if W is 10 ms or 10 subframes, the first time region may be composed of 10 subframes, but this application is implemented Examples do not limit this.
  • each of the L information bits corresponds to at least one time unit among P time units included in one of the N first time regions in the first time region.
  • the number of time units corresponding to each information bit in the L information bits is or or or or The first time zone corresponding to each information bit in the L information bits may be indicated according to higher layer signaling configuration or DCI signaling.
  • the time unit indicated by the lth information bit in the L information bits is located on the pth time unit in the first time area, 1 ⁇ p ⁇ P, 1 ⁇ l ⁇ L, and both l and p are integers.
  • the p-th time unit is an index or time unit numbered p-1.
  • the L information bits correspond to all time units included in the first time area # 11, and the L information bits correspond to all time units included in the first time area # 21.
  • Each of the L information bits corresponds to at least one time unit of all time units included in the first time area # 11, and each of the L information bits corresponds to the first time At least one time unit among all time units included in the area # 21.
  • the first time position of the first time period # 11 is located in the third time unit in the first time area # 1
  • the first time position of the first time period # 21 is located in the fourth time in the first time area # 21 Time unit.
  • the information bit carried by the first signal is "0110100000"
  • the third bit in the information bit can indicate that terminal device # 1 needs to start from the first time period # 11
  • the detection of the first channel is started, and the fourth bit in the first indication information may indicate that the terminal device # 2 does not need to detect the first channel from the start position of its first time period # 21.
  • the first signal is “011”
  • the second bit in the first indication information may indicate that terminal device # 1 needs to detect the first position from the beginning of the first time period # 11
  • One channel and terminal device # 2 need to detect the first channel from the beginning of its first time period # 21.
  • the network device may first determine the offset of the first time position located in the corresponding first time zone from the first time zone (ie, the second Offset), and then determine the information bit corresponding to the first time position according to the second offset, thereby determining the first signal.
  • the second offset is greater than or equal to 0 and less than the duration of the first time zone.
  • the unit of the second offset may be ms, or the granularity of the second offset may be a subframe or a time slot, but this embodiment of the present application does not limit this.
  • T is the first offset configured for the terminal device
  • t is the second offset of the terminal device
  • R is the period of the multiple candidate time positions
  • o is the multiple of the multiple candidate time positions Offset.
  • the value range of t is: 0 ⁇ t ⁇ W-1 or 0 ⁇ t ⁇ W.
  • the calculation formula of the first time position Q (that is, the slot where the first time position is located) is:
  • n t, f is the frame number where the first time position is located, The time slot number where the first time position is located.
  • the calculation formula of the first time position Q (that is, the subframe where the first time position is located) is:
  • n t, f is the frame number where the first time position is located
  • the candidate time position may be associated with multiple first offsets or multiple terminal devices, and multiple first time regions may be determined according to the multiple first offsets.
  • the first signal corresponding to the first time area may instruct the multiple terminal devices to start or stop detecting the first channel from the corresponding first time position, In this way, even if the cycle of the candidate time position of the terminal device (ie, an example of the DRX cycle) and the offset (that is, an example of the offset of the activation period can also be regarded as the Y value in Formula 1), it can be achieved
  • the purpose of multiple terminal equipment multiplexing the same first signal In other words, the network device does not need to send the first signal (that is, an example of the WUS signal) on different time or frequency domain resources for each terminal device, which can save network device resources and improve system resource utilization .
  • FIG. 11 is a schematic flowchart of a communication method 300 provided by an embodiment of the present application. The method is used for the terminal device to determine the candidate time position corresponding to the first time position and to detect the first channel on the determined candidate time position.
  • the method provided by the present application will be described by taking the terminal device # 1 determining the candidate time position corresponding to the first time position # 1 and the process of detecting the first channel at the determined candidate time position as an example.
  • the first time position # 1 may be any time position among a plurality of first time positions distributed periodically.
  • other terminal devices in the terminal device group may use a similar method to determine a candidate time position corresponding to any first time position and detect the first channel at the determined candidate time position.
  • the terminal device # 1 determines the second offset t according to the first time position # 1, the period R of the candidate time position, the first offset T, and the duration W of the first time area.
  • the first time position # 1 is located in the first time area # 1.
  • terminal device # 1 is any terminal device in the terminal device group described above.
  • the first offset T and the duration W of the first time zone can be configured by the network device, and will not be repeated here.
  • the period R of the candidate time position may be notified to the terminal device # 1 by the network device, for example, by high-level signaling.
  • the network device may also notify the terminal device # 1 of the offset o of the candidate time position, for example, by high-level signaling.
  • the value of W may be equal to the value of R.
  • the first time position # 1 of the terminal device # 1 can be determined according to formula (1) or according to the period of the PDCCH search space and the offset value (unit is slot), which will not be repeated here.
  • the second offset t is the time distance between the first time position # 1 and the starting position of the first time area # 1 corresponding to the first time position # 1, and the second offset is greater than Or it is equal to 0 and less than the duration of the first time zone.
  • the unit of the second offset may be ms, or the granularity of the second offset may be a subframe or a time slot, but this embodiment of the present application does not limit this.
  • the value range of t is: 0 ⁇ t ⁇ W-1 or 0 ⁇ t ⁇ W.
  • the calculation formula of the first time position Q (that is, the slot where the first time position is located) is:
  • n t, f is the frame number where the first time position is located, The time slot number where the first time position is located.
  • the calculation formula of the first time position Q (that is, the subframe where the first time position is located) is:
  • n t, f is the frame number where the first time position is located
  • the terminal device # 1 detects the first signal at the first candidate time position.
  • the terminal device # 1 determines whether to start or stop detecting the first channel from the first time position # 1 according to the detection result of the first signal.
  • the terminal device # 1 may determine whether to start or stop detecting the first channel from the first time position # 1 according to the first signal. If the terminal device # 1 does not detect the first signal at the first candidate time position, the terminal device # 1 does not start or stop detecting the first channel from the first time position # 1.
  • S930 may specifically be: terminal device # 1 determines at least one bit of information bits included in the first signal according to the second offset t, and then according to the at least one bit The bit determines whether to detect the first channel from the first time position # 1.
  • the first signal may include L information bits, and the first time zone # 1 is composed of P time units, and the L information bits correspond to the P time units.
  • the terminal device # 1 determines the first signal according to the second offset t, including: the terminal device # 1 determines the first time position according to the second offset t and the duration W of the first time zone # 1 is the time unit of the P time units, and according to the indication of the information bit corresponding to the time unit corresponding to the first time position # 1 in the L information bits, determine whether to start from the first time Position # 1 starts detecting the first channel or stops detecting the first channel.
  • terminal device # 1 needs to determine which of the P time units the first time position # 1 corresponds to, and then determine whether to start from the first according to the information bits corresponding to the determined time unit Time position # 1 starts to detect the first channel or stops detecting the first channel.
  • the time unit corresponding to the first time position can be determined to be the second time of the 10 time units unit.
  • the information bit corresponding to the tth time unit is the lth information bit from the highest bit among the L information bits, where, then
  • the terminal device # 1 can determine the lth information bit, and thus can determine whether to detect the first channel from the first time position # 1 or stop detecting the first channel. For example, when the lth information bit is "1", the terminal device # 1 may determine that the first channel needs to be detected from the first time position # 1, and when the lth information bit is "0", the terminal device # 1 It can be determined that it is not necessary to detect the first channel from the first time position # 1.
  • the terminal device # 1 may determine that the first channel needs to be detected from the first time position # 1, and when the lth information bit is "1", the terminal device # 1 may determine that it is not necessary to detect the first channel from the first time position # 1.
  • the method may further include: the terminal device # 1 determines the first time zone # 1 where the first conversion period is located according to the second offset t and the duration W of the first time zone.
  • the time distance between the start position of the first time zone # 1 where the first time position is located and the first candidate time position is the first offset T.
  • the second offset t is the time distance between the start position of the first conversion period and the start time position of the first time zone # 1, and the second offset is greater than or equal to 0 and less than the first time The duration of the area.
  • FIG. 12 A specific example of different terminal devices detecting the first signal.
  • FIG. 12 is the first signal to be detected by three terminal devices from the perspective of the terminal device.
  • the terminal device in order to enable a group of terminal devices with different DRX parameters (including DRX cycle and "on duration" offset) to multiplex the same first signal, the terminal device "on duration" start position and candidate time position The distance can be dynamically changed and may be different under different DRX cycles.
  • the candidate time position where the first signal is detected is determined based on the DRX cycle and the duration of the first time area.
  • the bits corresponding to the three terminal devices are the 3rd, 5th, and 9th bits of the source information bit; if the source bit value is "0110100000", it means Terminal device # 1 and terminal device # 2 need to detect the first channel from the corresponding "onduration" starting position, while terminal device # 3 continues to enter the sleep state.
  • the terminal device If the first signal only carries 1-bit information or energy detection, if the terminal device detects the first signal at the candidate time position, it can be determined that the first channel needs to be detected from the corresponding "onduration" starting position; if the terminal device Without detecting the first signal, the terminal device continues to enter the sleep state.
  • the communication device 400 may include a processing unit 410 and a transceiver unit 420.
  • the communication device 400 may correspond to the network device in the foregoing method embodiment, for example, it may be a network device, or a chip configured in the network device.
  • the communication device 400 may correspond to the network device in the method 200 according to an embodiment of the present application.
  • the communication device 400 may include a unit for performing the method performed by the network device in the method 200 in FIG. 8.
  • each unit in the communication device 400 and the other operations and / or functions described above are respectively for implementing the corresponding flow of the method 200 in FIG. 8.
  • the processing unit 410 may be used to perform steps S210 and S220 in the method 200
  • the transceiver unit 420 may be used to perform step S230 in the method 200.
  • processing unit 410 in the communication apparatus 400 may correspond to the processor 610 in the network device 600 shown in FIG. 16, and the transceiving unit 420 may correspond to the transceiver in the network device 600 shown in FIG. 16 620.
  • the communication device 400 may correspond to the terminal device in the foregoing method embodiment, for example, it may be a terminal device, or a chip configured in the terminal device.
  • the communication device 400 may correspond to the terminal device in the method 300 according to an embodiment of the present application, and the communication device 400 may include a unit for performing the method performed by the terminal device in the method 300 in FIG. 11.
  • each unit in the communication device 400 and the other operations and / or functions described above are respectively to implement the corresponding flow of the method 300 in FIG. 11.
  • the processing unit 410 may be used to perform steps S310 and S330 in the method 300, and the transceiver unit 420 may be used to perform step S320 in the method 300.
  • step S320 may be performed by the processing unit 410.
  • processing unit 410 in the communication apparatus 400 may correspond to the processor 501 in the terminal device 500 shown in FIG. 15, and the transceiving unit 420 may correspond to the transceiver in the terminal device 500 shown in FIG. 15 502.
  • the terminal device 500 includes a processor 501 and a transceiver 502.
  • the terminal device 500 further includes a memory 503.
  • the processor 501, the transceiver 502 and the memory 503 can communicate with each other through an internal connection path to transfer control and / or data signals.
  • the memory 503 is used to store a computer program
  • the processor 501 is used from the memory 503 Call and run the computer program to control the transceiver 502 to send and receive signals.
  • the terminal device 500 may further include an antenna 504 for sending uplink data or uplink control signaling output by the transceiver 502 through a wireless signal.
  • the above processor 501 and the memory 503 can be combined into one processing device.
  • the processor 501 is used to execute the program code stored in the memory 503 to realize the above function. It should be understood that the processing devices shown in the figures are only examples. In specific implementation, the memory 503 may also be integrated in the processor 501 or independent of the processor 501. This application does not limit this.
  • the above-mentioned terminal device 500 further includes an antenna 510 for sending the uplink data or uplink control signal output by the transceiver 502 through a wireless signal.
  • the processor 501 When the program instructions stored in the memory 503 are executed by the processor 501, the processor 501 is used for according to the first time position, the period of the candidate time position of the first signal, the first offset configured for the terminal device, and the first The length of the time zone determines a second offset, and the first time position is within the first time zone; the processing unit is further configured to, according to the first time position, the first offset, and The second offset determines a first candidate time position from a plurality of candidate time positions of the first signal, and the plurality of candidate time positions are periodically distributed in the time domain according to a period of the candidate time position; Detecting the first signal at the first candidate time position; the processing unit is further configured to determine whether to detect the first channel from the first time position according to the detection result of the first signal. Or "detect the first signal at the first candidate time position" may be performed by the transceiver 502.
  • the terminal device 500 may correspond to the terminal device in the method 300 according to an embodiment of the present application, and the terminal device 500 may include a unit for performing the method performed by the terminal device in the method 300 in FIG. 11.
  • each unit in the terminal device 500 and the other operations and / or functions described above are respectively for implementing the corresponding flow of the method 300 in FIG. 11.
  • the foregoing processor 501 may be used to perform the actions described in the foregoing method embodiments that are internally implemented by the terminal device, and the transceiver 502 may be used to perform the operations described in the foregoing method embodiments by the terminal device to or from the network device. action.
  • the terminal device 500 may correspond to the terminal device in the method 300 according to an embodiment of the present application, and the terminal device 500 may include a unit for performing the method performed by the terminal device in the method 300 in FIG. 11.
  • each unit in the terminal device 500 and the other operations and / or functions described above are respectively for implementing the corresponding flow of the method 300 in FIG. 11.
  • the above-mentioned terminal device 500 may further include a power supply 506 for providing power to various devices or circuits in the terminal device.
  • the terminal device 500 may further include one or more of an input unit 505, a display unit 507, an audio circuit 508, a camera 509, a sensor 511, etc.
  • the audio circuit A speaker 5082, a microphone 5084, etc. may also be included.
  • the network device 600 includes a processor 610 and a transceiver 620.
  • the network device 600 further includes a memory 630.
  • the processor 610, the transceiver 620 and the memory 630 communicate with each other through an internal connection channel to transfer control and / or data signals.
  • the memory 630 is used to store a computer program, and the processor 610 is used to call from the memory 630 And run the computer program to control the transceiver 620 to send and receive signals.
  • the processor 610 and the memory 630 may be combined into one processing device.
  • the processor 610 is used to execute the program code stored in the memory 630 to implement the above functions.
  • the memory 630 may also be integrated in the processor 610 or independent of the processor 610.
  • the above-mentioned network device 600 may further include an antenna 640 for sending downlink data or downlink control signaling output by the transceiver 620 through a wireless signal.
  • the processor 610 When the program instructions stored in the memory 630 are executed by the processor 610, the processor 610 is used for according to the first time position, the period of the candidate time position of the first signal, the first offset configured for the terminal device and the first The length of the time zone determines a second offset, and the first time position is within the first time zone; the processing unit is further configured to, according to the first time position, the first offset, and The second offset determines a first candidate time position from a plurality of candidate time positions of the first signal, and the plurality of candidate time positions are periodically distributed in the time domain according to a period of the candidate time position; Detecting the first signal at the first candidate time position; the processing unit is further configured to determine whether to detect the first channel from the first time position according to the detection result of the first signal. Or "detect the first signal at the first candidate time position" may be performed by the transceiver 620.
  • the network device 600 may correspond to the network device in the method 200 according to an embodiment of the present application, and the network device 600 may include a unit for performing the method performed by the network device in the method 200 in FIG. 8.
  • each unit in the network device 600 and the other operations and / or functions described above are to implement the corresponding process of the method 200 in FIG. For brevity, I will not repeat them here.
  • the foregoing processor 610 may be used to perform the actions described in the foregoing method embodiments that are internally implemented by the network device, and the transceiver 620 may be used to perform the operations described in the previous method embodiments that the network device sends to or receives from the terminal device action.
  • the transceiver 620 may be used to perform the operations described in the previous method embodiments that the network device sends to or receives from the terminal device action.
  • processors in the embodiments of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and application specific integrated circuits (application specific integrated circuit, ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • FPGA field programmable gate array
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmableROM, PROM), erasable programmable read-only memory (erasablePROM, EPROM), electrically erasable programmable only Read memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (random access memory, RAM), which is used as an external cache.
  • random access memory random access memory
  • static random access memory static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access Access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • double data Srate double data Srate
  • DDR SDRAM enhanced synchronous dynamic random access memory
  • ESDRAM synchronous connection dynamic random access memory Take memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).
  • the present application further provides a computer program product, the computer program product includes: computer program code, when the computer program code runs on the computer, the computer is caused to execute FIG. 8 or FIG. 11 The method in the embodiment is shown.
  • the present application also provides a computer-readable medium that stores program code, and when the program code runs on a computer, the computer is allowed to execute the program shown in FIG. 8 or FIG. 11 The method in the embodiment is shown.
  • the present application further provides a system, which includes the foregoing one or more terminal devices and one or more network devices.
  • the above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination.
  • the above-described embodiments may be implemented in whole or in part in the form of computer program products.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded or executed on a computer, the processes or functions according to the embodiments of the present invention are generated in whole or in part.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server or data center Transmit to another website, computer, server or data center by wired (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that contains one or more collections of available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital universal disc (DVD)), or a semiconductor medium.
  • the semiconductor medium may be a solid state drive.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a division of logical functions.
  • there may be other divisions for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, the computer software product is stored in a storage medium, including Several instructions are used to enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program codes .

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Abstract

La présente invention concerne un procédé de communication pouvant économiser des ressources d'un dispositif de réseau et améliorer le taux d'utilisation des ressources système. Le procédé comprend les étapes suivantes : un dispositif de réseau détermine N premières régions temporelles correspondant à N premiers décalages selon une quelconque position temporelle candidate spécifique (telle qu'une première position temporelle candidate) pour un groupe de dispositifs terminaux, la durée d'une première région temporelle configurée pour le groupe de dispositifs terminaux et les N premiers décalages configurés pour le groupe de dispositifs terminaux ; le dispositif de réseau détermine une première position temporelle de chaque dispositif terminal ; et l'envoi d'un premier signal pour ledit dispositif terminal dans la première position temporelle candidate, le premier signal étant utilisé pour indiquer si plusieurs dispositifs terminaux commencent à détecter un premier canal ou arrêtent de détecter le premier canal à partir de leur première position temporelle respective, ladite position temporelle correspondant à chaque dispositif terminal parmi plusieurs dispositifs terminaux étant dans une première région temporelle correspondant au dispositif terminal.
PCT/CN2019/114017 2018-10-31 2019-10-29 Procédé de communication et appareil de communication WO2020088455A1 (fr)

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