WO2020186467A1 - Procédé et appareil pour réception discontinue sur spectre sans licence - Google Patents

Procédé et appareil pour réception discontinue sur spectre sans licence Download PDF

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Publication number
WO2020186467A1
WO2020186467A1 PCT/CN2019/078787 CN2019078787W WO2020186467A1 WO 2020186467 A1 WO2020186467 A1 WO 2020186467A1 CN 2019078787 W CN2019078787 W CN 2019078787W WO 2020186467 A1 WO2020186467 A1 WO 2020186467A1
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WIPO (PCT)
Prior art keywords
drx cycle
drx
cycle
terminal device
duration
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PCT/CN2019/078787
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English (en)
Chinese (zh)
Inventor
石聪
王淑坤
尤心
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201980016771.0A priority Critical patent/CN111972041B/zh
Priority to PCT/CN2019/078787 priority patent/WO2020186467A1/fr
Publication of WO2020186467A1 publication Critical patent/WO2020186467A1/fr

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    • 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]

Definitions

  • the embodiments of the present application relate to the field of communications, and more specifically, to a method and device for discontinuous reception on an unlicensed spectrum.
  • the terminal device adopts Discontinuous Reception (DRX) to receive downlink transmission.
  • the network device can configure a DRX cycle (cycle) for the terminal device.
  • the DRX cycle consists of an activation period (On Duration) and a dormancy period (Opportunity for DRX).
  • On Duration the activation period
  • Opportunity for DRX the terminal device monitors and receives the downlink transmission
  • the terminal device does not receive the downlink transmission to reduce Power consumption.
  • network equipment can only perform downlink transmission when channel listening is successful. If the terminal device does not receive the downlink transmission during the active period of the DRX cycle, it may be that the network device has no downlink transmission to send to the terminal device, or it may be that the network device has a downlink transmission to send, but has not listened to an available channel. In the latter case, how to ensure the data transmission performance so that the network device can send downlink transmission to the terminal device in time has become an urgent problem to be solved.
  • the embodiments of the present application provide a method and device for discontinuous reception on an unlicensed spectrum, which is beneficial to improving data transmission performance.
  • a method for discontinuous reception on an unlicensed spectrum includes: a terminal device starts a first timer according to a first discontinuous reception DRX cycle; if there is no DRX within the duration of n said first timers When downlink transmission is detected, the terminal device switches the first DRX cycle to the second DRX cycle, where the first DRX cycle is greater than the second DRX cycle, and n is a positive integer.
  • a method for discontinuous reception on an unlicensed spectrum includes: when a network device needs to send a downlink transmission to a terminal device, the network device detects a channel on the unlicensed spectrum; If the network device does not detect an available channel within the duration of n first timers of the first discontinuous transmission DRX cycle, the network device switches the first DRX cycle to the second DRX cycle, wherein the first DRX cycle The DRX cycle is greater than the second DRX cycle, and n is a positive integer; the network device detects the channel in the second DRX cycle.
  • a terminal device which is used to execute the method in the foregoing first aspect or each of its implementation manners.
  • the terminal device includes a functional module for executing the method in the foregoing first aspect or each implementation manner thereof.
  • a network device configured to execute the method in the second aspect or its implementation manners.
  • the network device includes a functional module for executing the method in the foregoing second aspect or each implementation manner thereof.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the foregoing first aspect or each of its implementation manners.
  • a network device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned second aspect or each implementation manner thereof.
  • a device for implementing any one of the first aspect to the second aspect or the method in each implementation manner thereof.
  • the device includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes any one of the above-mentioned first aspect to the second aspect or each implementation manner thereof Method in.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.
  • a computer program product which includes computer program instructions that cause a computer to execute any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.
  • a computer program which when running on a computer, causes the computer to execute any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.
  • a communication system including a network device and a terminal device.
  • the network device is used to: in the case of a need to send a downlink transmission to the terminal device, detect the channel on the unlicensed spectrum; if it is within the duration of n first timers of the first discontinuous transmission DRX cycle If no available channel is detected, the first DRX cycle is switched to the second DRX cycle, where the first DRX cycle is greater than the second DRX cycle, and n is a positive integer; in the second DRX cycle, the The channel is tested.
  • the terminal device is configured to: start a first timer according to the first discontinuous reception DRX cycle; if no downlink transmission is detected within the duration of the n first timers, set the first DRX cycle Switch to the second DRX cycle, where the first DRX cycle is greater than the second DRX cycle, and n is a positive integer.
  • the terminal device if it does not detect any downlink transmission within the duration of the first timer of the first DRX cycle, it can directly switch the first DRX cycle to the second DRX cycle, and the second DRX cycle is smaller than the first DRX cycle. cycle. This can avoid the problem that if the network device does not detect an available channel within the duration of the first timer, it can only wait until the next first timer of the first DRX cycle to detect the channel, which causes the problem of data transmission performance degradation.
  • the solution of this application can enable the network device to switch directly to the second DRX cycle with a shorter period according to the detection result within the first timer duration even if the network device does not preempt the channel, and the network device can follow the second DRX cycle Detecting the channel can reduce the time delay of data transmission, improve data transmission performance, and help improve the probability of network equipment dispatching to terminal equipment.
  • Fig. 1 is a schematic diagram of a communication system architecture applied by an embodiment of the present application.
  • Fig. 2 is a schematic diagram of a DRX cycle provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a method for discontinuous reception on an unlicensed spectrum provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of another method for discontinuous reception on an unlicensed spectrum provided by an embodiment of the present application.
  • Fig. 5 is a schematic diagram of a DRX cycle switching provided by an embodiment of the present application.
  • Fig. 6 is a schematic diagram of another DRX cycle switching provided by an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • Fig. 8 is a schematic block diagram of a network device provided by an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • Fig. 1 is a schematic diagram of an application scenario of an embodiment of the present application.
  • the communication system 100 may include a terminal device 110 and a network device 120.
  • the network device 120 may communicate with the terminal device 110 through an air interface.
  • the terminal device 110 and the network device 120 support multi-service transmission.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System of Mobile Communication
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • NR New Radio
  • 5G systems etc.
  • the technical solutions of the embodiments of the present application can be applied to the long-term evolution (LTE) coverage of a wide area and the NR island coverage mode.
  • LTE long-term evolution
  • a large amount of LTE is deployed below 6GHz, and there are few sub-6GHz spectrums available for 5G.
  • So NR must study the frequency spectrum application above 6GHz, and the high frequency band has limited coverage and fast signal fading.
  • a tight interworking mode between LTE and NR is proposed.
  • the main application scenarios of 5G include: Enhance Mobile Broadband (eMBB), Ultra-Reliable and Low Latency Communication (URLLC), and massive machine type of communication, mMTC ).
  • eMBB aims at users to obtain multimedia content, services and data, and its demand is growing rapidly.
  • URLLC Ultra-Reliable and Low Latency Communication
  • Typical applications of URLLC include: industrial automation, power automation, telemedicine operations (surgery), traffic safety protection, etc.
  • Typical features of mMTC include: high connection density, small data volume, delay-insensitive services, low-cost modules and long service life.
  • the network coverage in the embodiments of the present application may adopt wide-area Long Term Evolution (LTE) coverage and NR island coverage mode.
  • LTE Long Term Evolution
  • NR island coverage mode In order to protect mobile operators' early investment in LTE, a tight interworking mode between LTE and NR can be further adopted.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems based on non-orthogonal multiple access technologies, such as sparse code multiple access (SCMA) systems, low-density signatures ( Low Density Signature (LDS) system, etc.
  • SCMA sparse code multiple access
  • LDS Low Density Signature
  • SCMA system and LDS system can also be called other names in the communication field;
  • the technical solutions of the embodiments of this application can be applied to multiple access technologies that use non-orthogonal multiple access technologies.
  • Carrier transmission systems such as non-orthogonal multiple access technology, Orthogonal Frequency Division Multiplexing (OFDM), Filter Bank Multi-Carrier (FBMC), General Frequency Division Multiplexing ( Generalized Frequency Division Multiplexing, GFDM), filtered orthogonal frequency division multiplexing (Filtered-OFDM, F-OFDM) systems, etc.
  • OFDM Orthogonal Frequency Division Multiplexing
  • FBMC Filter Bank Multi-Carrier
  • GFDM General Frequency Division Multiplexing
  • GFDM Generalized Frequency Division Multiplexing
  • Filtered-OFDM Frequency Division Multiplexing
  • F-OFDM filtered orthogonal frequency division multiplexing
  • the network device 120 may be an access network device that communicates with the terminal device 110.
  • the access network device can provide communication coverage for a specific geographic area, and can communicate with terminal devices 110 (for example, UE) located in the coverage area.
  • the network device 120 may be a base station (Base Transceiver Station, BTS) in a global system of mobile communication (GSM) system or a code division multiple access (Code Division Multiple Access, CDMA), or it may be The base station (NodeB, NB) in the Wideband Code Division Multiple Access (WCDMA) system, and the network device 120 may also be the Evolutional Node B (Evolutional Node B) in the Long Term Evolution (LTE) system. eNB or eNodeB).
  • the network device 120 may also be a next generation radio access network (Next Generation Radio Access Network, NG RAN), or a base station (gNB) in an NR system, or a cloud radio access network (Cloud Radio Access).
  • Next Generation Radio Access Network Next Generation Radio Access Network
  • gNB base station
  • Cloud Radio Access Cloud Radio Access
  • CRAN public Land Mobile Network
  • PLMN Land Mobile Network
  • the terminal device 110 may be any terminal device, including but not limited to: connected via a wired line, such as via a public switched telephone network (Public Switched Telephone Networks, PSTN), digital subscriber line (Digital Subscriber Line, DSL), Digital cable, direct cable connection; and/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital television networks such as DVB-H networks , Satellite network, AM-FM broadcast transmitter; and/or another terminal device set to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • a terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal” or a "mobile terminal".
  • Examples of mobile terminals include, but are not limited to, satellites or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio phone transceivers Electronic device.
  • Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • direct terminal connection (Device to Device, D2D) communication may be performed between the terminal devices 110.
  • FIG. 1 exemplarily shows a network device and a terminal device.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices.
  • the implementation of this application Not limited to this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, and the embodiment of the present application is not limited thereto.
  • the uplink channel of the embodiment of the present application may include a physical random access channel (Physical Random Access Channel, PRACH), a physical uplink control channel (Physical Uplink Control channel, PUCCH), and a physical uplink shared channel (Physical Uplink Shared channel, PUSCH) and so on.
  • the uplink reference signal may include an uplink demodulation reference signal (Demodulation Reference Signal, DMRS), a sounding reference signal (Sounding Reference Signal, SRS), a phase tracking reference signal (PT-RS), etc.
  • DMRS Downlink demodulation Reference Signal
  • SRS Sounding Reference Signal
  • PT-RS phase tracking reference signal
  • the uplink DMRS can be used for uplink channel demodulation
  • SRS can be used for uplink channel measurement
  • PT-RS can also be used for uplink channel measurement, uplink time-frequency synchronization or phase tracking.
  • the embodiments of the present application may include uplink physical channels or uplink reference signals with the same names and different functions as the above, and may also include uplink physical channels or uplink reference signals with different names and the same functions as the above. Not limited.
  • the communication device may include a network device 120 and a terminal device 110 having communication functions, and the network device 120 and the terminal device 110 may be the above-mentioned devices, which will not be repeated here;
  • the communication device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the NR system also supports the use of unlicensed frequency bands.
  • the scenarios in which the NR system works in unlicensed frequency bands include the following:
  • Carrier aggregation scenario Primary cell (primary cell, PCell) is a licensed spectrum, and secondary cells (secondary cells, SCell) working on unlicensed spectrum are aggregated through carrier aggregation.
  • Primary cell primary cell, PCell
  • secondary cells secondary cells, SCell
  • PCell is the LTE authorized spectrum
  • PSCell primary and secondary cell
  • NR works as an independent cell in an unlicensed spectrum.
  • the working frequency bands of NR (NR-based access to unlicensed spectrum, NR-U) on the unlicensed frequency band are 5GHz unlicensed spectrum and 6GHz unlicensed spectrum.
  • NR-U NR-based access to unlicensed spectrum
  • the design of NR-U should ensure fairness with other systems that are already working on these unlicensed spectrums, such as wireless fidelity (WiFi).
  • WiFi wireless fidelity
  • the principle of fairness is that the impact of NR-U on systems that have been deployed on unlicensed spectrum cannot exceed the impact between these systems.
  • the general energy detection mechanism is the listen before talk (LBT) mechanism.
  • LBT listen before talk
  • the basic principle of this mechanism is that the base station or terminal (transmission end) needs to listen for a period of time before transmitting data on the unlicensed spectrum. . If the result of the listening indicates that the channel is idle, the transmitting end can transmit data to the receiving end. If the listening result indicates that the channel is in an occupied state, the transmitting end needs to back off for a period of time according to regulations before continuing to listen to the channel until the channel listening result is idle before transmitting data to the receiving end.
  • LAA licensed-assisted access
  • the base station For downlink data transmission, the base station needs to perform LBT on the unlicensed frequency band.
  • the priority of channel access is determined by the following Table 1.
  • Mp is related to the listening channel time for channel access.
  • CW min,p and CW max,p are related to the random channel time during channel access. Specifically, when the base station listens to the channel for the Td duration and is idle, it needs to listen to the channel N times again, each with a duration of 9 us.
  • N is a random number from 0 to CWp
  • T mcot,p is the longest time for the base station to occupy the channel after it has seized the channel.
  • the T mcot,p is related to the channel priority adopted by the base station. For example, if the channel priority is 1, then the channel will be occupied for 2 ms at most after the channel listening is successful.
  • the network equipment needs to transmit data to the terminal equipment within the MCOT time. If the network equipment does not seize the channel within this time, or the network equipment seizes the channel outside the MCOT time, the terminal equipment is Will not receive scheduling data sent by network equipment.
  • a packet-based data stream can be transmitted between the terminal device 110 and the network device 120.
  • the packet-based data stream is usually bursty.
  • the terminal device 110 has data transmission for a period of time, but there is no data transmission for the next longer period of time. Therefore, if the terminal device 110 has been blindly checking the physical downlink control channel (PDCCH), it will cause excessive power consumption of the terminal device.
  • PDCCH physical downlink control channel
  • the network can configure the terminal to wake up at the time predicted by the network (DRX ON), and the terminal monitors the downlink control channel; at the same time, the network can also configure the terminal to sleep at the time predicted by the network (DRX OFF), that is, The terminal equipment does not need to monitor the downlink control channel.
  • the network device 120 can schedule the terminal device 110 during the DRX ON time of the terminal device 110.
  • the radio frequency is turned off, which can reduce the number of terminals. Power consumption.
  • the Media Access Control (MAC) entity may be configured with a DRX function by Radio Resource Control (RRC) to control the terminal's behavior of monitoring downlink transmission.
  • RRC Radio Resource Control
  • the DRX cycle (cycle) configured by the network device for the terminal device consists of an activation period (On Duration) and a sleep period (Opportunity for DRX).
  • the terminal device In the RRC connected mode, if the terminal device is configured with the DRX function, the terminal device can monitor and receive the PDCCH during the active period (Active Time); and not receive the PDCCH during the non-active time (Non Active Time) To reduce power consumption.
  • the duration of the activation period can be controlled by the DRX-onDuration Timer (drx-onDurationTimer) and the DRX inactivation timer (drx-InactivityTimer).
  • the DRX-active period timer is also called the DRX-active period timer.
  • the deactivation timer is also called the inactivity timer. Specifically, when the DRX-onDuration Timer (drx-onDurationTimer) fails, if no other timers are running, the active period ends.
  • the terminal device can extend the duration of the activation period by starting or restarting the drx-InactivityTimer.
  • the terminal device can start the drx-InactivityTimer when receiving the PDCCH, so the time of the DRX activation period will be extended with the start of the drx-onDurationTimer.
  • the terminal device can also restart the DRX-InactivityTimer.
  • the terminal device can switch the DRX cycle after the drx-InactivityTimer expires, and switch to the longer cycle DRX cycle, which can save the power consumption of the terminal device.
  • the system can configure the DRX short cycle and/or the DRX long cycle for the terminal device according to different business scenarios. If the terminal device currently uses the DRX short cycle, it means that the time interval for the terminal device from the current activation period to the next activation period is relatively short. If the terminal device currently uses the DRX long period, it means that the time interval for the terminal device from the current activation period to the next activation period is longer.
  • the voice codec when performing voice transmission (voice over internet protocol, VOIP) services based on Internet Protocol (IP), the voice codec usually sends a VOIP packet in 20ms, then a short DRX cycle of 20ms can be configured; and In the long silent period during the voice call, the DRX long period can be configured.
  • voice transmission voice over internet protocol
  • IP Internet Protocol
  • the terminal device can determine the time to start drx-onDurationTimer according to the current DRX cycle, as follows:
  • the DRX long cycle is the default configuration
  • the DRX short cycle is an optional configuration.
  • the network device can configure only one DRX long cycle to the terminal device without configuring the DRX short cycle; or the network device can also configure the DRX long cycle and the DRX short cycle to the terminal device at the same time.
  • the DRX long cycle and the DRX short cycle are relative, as long as the cycle duration of the DRX long cycle is greater than the cycle duration of the DRX short cycle.
  • the terminal device can switch between the DRX long cycle and the DRX short cycle.
  • the specific switching conditions are described below.
  • the terminal device can switch to DRX after the drx-inactivityTimer expires or after receiving the DRX MAC control element (CE) sent by the network device Short cycle. If the terminal device is currently in the DRX short cycle, the terminal device can switch to the DRX long cycle after the drx-ShortCycleTimer expires or after receiving the long DRX command MAC CE sent by the network device.
  • CE DRX MAC control element
  • a network device For unlicensed spectrum, when a network device wants to send data to a terminal device configured with DRX, it needs to send the data during the active period of the DRX cycle, and it needs to listen to the channel in the active period first, and the channel listens successfully. Then, the downlink data can be sent to the terminal device.
  • the terminal device does not receive the downlink transmission from the network device during the activation period, such as PDCCH scheduling, there are two possibilities:
  • the network device has data to send to the terminal device, but the network device has not preempted the channel.
  • the network equipment does not have data to dispatch to the terminal equipment.
  • the terminal device cannot distinguish which situation caused the failure to receive the PDCCH scheduling during the DRX active period.
  • the network device can only schedule data to the terminal device in the next DRX cycle, and the premise is that the network device can preempt the channel during the activation period of the next DRX cycle. If the terminal device is in the DRX cycle for a long time, it will take a long time for the network device to successfully send data to the terminal device, which makes the time required for the network device to schedule the terminal device to become longer, and the terminal device cannot receive it in time Data sent to the network device, which will affect the data transmission performance of the network device.
  • the terminal device If the terminal device is in the long DRX cycle and the terminal device wants to switch to the short DRX cycle, it can only switch to the short DRX cycle by sending a long DRX command MAC CE through the network device, or waiting until the drx-InactivityTimer expires.
  • the network device needs to preempt the channel to send MAC CE.
  • the drx-InactivityTimer since the drx-InactivityTimer needs to receive the PDCCH schedule sent by the network device to start the timer, this also means that the network device needs to preempt the channel to use it. In summary, these two methods cannot be used when the network device does not preempt the channel. Therefore, it is necessary to design a new way to switch between the long DRX cycle and the short DRX cycle more effectively to improve the data transmission performance.
  • the embodiment of the present application provides a method for discontinuous reception on an unlicensed spectrum, which can improve data transmission performance.
  • FIG. 3 is a schematic flowchart of a method for discontinuous reception on an unlicensed spectrum provided by an embodiment of the present application.
  • the method may be executed by a terminal device, and the terminal device may be the terminal device shown in FIG. 1.
  • the method includes steps S310 and S320.
  • the terminal device starts a first timer according to the first DRX cycle.
  • the first DRX cycle may be a long DRX cycle or a short DRX cycle, which is not specifically limited in the embodiment of the present application.
  • the network device may configure only one DRX cycle for the terminal device, and the first DRX cycle may be the configured DRX cycle.
  • the configured DRX cycle may be a long DRX cycle.
  • the first DRX cycle may also be a DRX cycle determined according to the configured DRX cycle, which will be described in detail below.
  • the network device may configure multiple DRX cycles for the terminal device, and the first DRX cycle may be any one of the multiple DRX cycles.
  • the embodiment of the present application may call the DRX cycle with the longest DRX cycle as the DRX long cycle, and the others as the DRX short cycle.
  • Starting the first timer according to the first DRX cycle by the terminal device may indicate starting the first timer according to the DRX parameters of the first DRX cycle, and the first timer may indicate the drx-onDurationTimer described above.
  • the time to start the first timer can be determined according to Formula 1 or Formula 2 described above. For example, if the first DRX cycle is a short cycle, the time to start the first timer can be determined according to Formula 1; if the first DRX cycle is a long cycle, the time to start the first timer can be determined according to Formula 2.
  • the terminal device switches the first DRX cycle to the second DRX cycle, where the first DRX cycle is greater than the second DRX cycle.
  • the terminal device can detect the downlink transmission within the duration of the first timer.
  • the terminal device can start the drx-Inactivitytimer according to the existing procedure to perform DRX cycle switching.
  • the terminal device does not detect the downlink transmission within the duration of the first timer, it does not need to wait until the DRX command MAC CE sent by the network device is received, or the drx-InactivityTimer expires before switching to the second DRX cycle.
  • the DRX cycle is switched directly, from the first DRX cycle to the second DRX cycle.
  • the terminal device does not detect the downlink transmission within the duration of the first timer, which may mean that the terminal device does not detect the downlink transmission within the duration of one first timer, or it may mean that the terminal device is within the duration of multiple first timers
  • the downlink transmission is not detected, or it may also mean that the terminal device does not detect the downlink transmission within a preset period of time, and the preset period of time may be greater than the period of the first DRX cycle.
  • the terminal device When the terminal device does not detect the downlink transmission within the duration of multiple first timers, it switches the first DRX cycle to the second DRX cycle. This can guarantee the data transmission performance to a certain extent without causing The power consumption of the terminal device is too large.
  • the terminal device After the terminal device switches to the second DRX cycle, it can detect the downlink transmission according to the drx-onDurationTimer of the second DRX cycle.
  • the network device may also listen to the channel according to the drx-onDurationTimer of the second DRX cycle, and if the channel listening is successful, send a downlink transmission to the terminal device.
  • the drx-onDurationTimer of the second DRX cycle may also be the same timer as the first timer.
  • FIG. 4 is another method for discontinuous reception on an unlicensed spectrum provided by an embodiment of the present application.
  • the method may be executed by a network device, and the network device may be the network device shown in FIG. 1.
  • the method shown in FIG. 4 corresponds to the method shown in FIG. 3, and for the features not described in FIG. 4, reference may be made to the description of the corresponding features in FIG.
  • the method includes steps S410 to S430.
  • a network device For unlicensed spectrum, if a network device wants to send a downlink transmission to a terminal device, the network device needs to detect the channel on the unlicensed spectrum first, and only when the channel detection succeeds, can it send a downlink transmission to the terminal device.
  • the network device If the network device does not detect an available channel within the duration of the n first timers of the first discontinuous transmission DRX cycle, the network device switches the first DRX cycle to the second DRX cycle, where, The first DRX cycle is greater than the second DRX cycle, and n is a positive integer.
  • the terminal device can receive the downlink transmission sent by the network device only during the active period of the DRX cycle. Therefore, the network device needs to detect the channel during the active period of the DRX cycle, and only when the channel detection is successful in the active period, can it send a downlink transmission to the terminal device.
  • the network device can detect the channel within the duration of n first timers in the first DRX cycle, and no available channel is detected in the n first timers. In this case, switch the first DRX cycle to the second DRX cycle.
  • the first timer may be drx-onDurationTimer.
  • the network device detects the channel in the second DRX cycle.
  • the network device may continue to detect the channel during the active period of the second DRX cycle.
  • the terminal device if it does not detect any downlink transmission within the duration of the first timer of the first DRX cycle, it can directly switch the first DRX cycle to the second DRX cycle. Less than the first DRX cycle. This can avoid the problem that if the network device does not detect an available channel within the duration of the first timer, it can only wait until the next first timer of the first DRX cycle to detect the channel, which causes the problem of data transmission performance degradation.
  • the solution of the embodiment of the present application can enable the terminal device to directly switch to the second DRX cycle with a shorter period according to the detection result within the first timer duration even if the network device does not preempt the channel, and the network device can follow the second DRX cycle.
  • the DRX periodically detects the channel, which can reduce the time delay of data transmission, improve data transmission performance, and help improve the probability of network equipment dispatching to terminal equipment.
  • the downlink transmission in the embodiment of the present application may include a downlink signal and/or a downlink channel.
  • the downlink signal and/or downlink channel may include at least one of the following: physical downlink control channel (PDCCH), downlink semi-persistent scheduling (SPS) transmission, downlink reference signal, downlink reference Signal sequence.
  • the downlink reference signal sequence may include, for example, a downlink demodulation reference signal (demodulation reference signal, DMRS) sequence, other sequences, and the like.
  • the terminal equipment detecting the downlink channel may mean detecting data or signals on the downlink channel.
  • the downstream channel is PDCCH.
  • the terminal device detects the PDCCH, which may mean that the terminal device detects data or other downlink signals sent by the network device on the PDCCH.
  • Both the first DRX cycle and the second DRX cycle are DRX cycles configured by the network device.
  • the network device may send a first DRX configuration message to the terminal device, and the first DRX configuration message may include at least two DRX cycles, and the at least two DRX cycles include the first DRX cycle and the second DRX cycle.
  • the DRX configuration message sent by the network device to the terminal device may include at least one of the following information: cycle duration of the DRX cycle, drx-onDurationTimer, drx-onDurationTimer subframe offset, drx-InactivityTimer, drx-shortCycleTimer, and drx-longCycleTimer etc.
  • the embodiment of the application does not specifically limit the selection of the first DRX cycle and the second DRX cycle.
  • the first DRX cycle may be any one of the at least two DRX cycles
  • the second DRX cycle is any one of the at least two DRX cycles whose cycle duration is shorter than the first DRX cycle.
  • the network device may also configure a switching sequence of the at least two DRX cycles for the terminal device, and the first DRX cycle and the second DRX cycle are two adjacent DRX cycles in the switching sequence.
  • the switching sequence of the at least two DRX cycles is determined according to the cycle duration of the at least two DRX cycles.
  • the switching sequence of the at least two DRX cycles may be arranged in the order of the period duration from large to small or from small to large.
  • the second DRX cycle is a DRX cycle whose cycle duration is second only to the first DRX cycle among at least two DRX cycles.
  • the first DRX cycle may be the DRX cycle with the longest cycle duration among the at least two DRX cycles. That is to say, the terminal device is currently in the DRX long cycle. If the terminal device does not detect the downlink transmission within the duration of n first timers, it can automatically switch to the DRX short cycle, so that the network device can implement the terminal device in time Scheduling.
  • the first DRX cycle is a DRX cycle configured by the network device
  • the second DRX cycle is a DRX cycle determined according to the first DRX cycle.
  • the network device may send a second DRX configuration message to the terminal device, where the second DRX configuration message includes the first DRX cycle; the terminal device may determine the second DRX cycle according to the first DRX cycle.
  • the terminal device determining the second DRX cycle according to the first DRX cycle may mean that the terminal device determines the cycle duration and/or the duration of the activation period of the second DRX cycle according to the first DRX cycle.
  • the period duration of the second DRX cycle may be obtained according to the first reduction rule on the basis of the period duration of the first DRX cycle.
  • the first reduction rule may refer to a reduction ratio or the number of subframes to be reduced.
  • the period duration of the second DRX cycle may be reduced by a certain ratio on the basis of the period duration of the first DRX cycle, or the period duration of the second DRX cycle may be reduced by a certain percentage on the basis of the first DRX cycle.
  • the number of subframes may be obtained according to the first reduction rule on the basis of the period duration of the first DRX cycle.
  • the first reduction rule may include that the reduction ratio is 1/2, and the cycle duration of the second DRX cycle is half of the cycle duration of the first DRX cycle.
  • the first reduction rule may also include other reduction ratios, such as 1/3, 2/3, etc.
  • the first reduction rule may include a reduced number of subframes.
  • the cycle duration of the second DRX cycle is obtained by reducing m subframes on the basis of the cycle duration of the first DRX cycle, and m is a positive integer.
  • the embodiment of the present application does not specifically limit the duration of the drx-onDurationTimer of the second DRX cycle.
  • the duration of the drx-onDurationTimer corresponding to the second DRX cycle may be equal to the duration of the drx-onDurationTimer corresponding to the first DRX cycle. That is to say, the embodiment of the present application may only shorten the cycle duration of the second DRX cycle, and the first DRX cycle
  • the duration of the drx-onDurationTimer corresponding to the second DRX cycle may be the duration of the drx-onDurationTimer corresponding to the first DRX cycle.
  • the duration of the drx-onDurationTimer corresponding to the second DRX cycle may be obtained according to the second reduction rule on the basis of the duration of the drx-onDurationTimer corresponding to the first DRX cycle.
  • the second reduction rule is similar to the first reduction rule, and may refer to the reduction ratio or the number of subframes to be reduced. If the second reduction rule includes a reduction ratio of 1/2, the duration of the drx-onDurationTimer corresponding to the second DRX cycle is half of the duration of the drx-onDurationTimer corresponding to the first DRX cycle.
  • the terminal device After the terminal device switches to the second DRX cycle, it can continue to detect the downlink transmission during the drx-onDurationTimer of the second DRX cycle. There are two situations, one is that downlink transmission is detected in the second DRX cycle, and the other is that no downlink transmission is detected in the second DRX cycle.
  • the terminal device may switch the second DRX cycle to the first target DRX cycle according to the instruction information sent by the network device.
  • the instruction information may be, for example, long DRX command MAC CE.
  • the terminal device may start a second timer when receiving a downlink transmission, and switch the second DRX cycle to the first target DRX cycle after the second timer expires.
  • the second timer may, for example, It is drx-inactivityTimer.
  • the terminal device may switch to the first target DRX cycle after the drx-InactivityTimer expires.
  • the period of the first target DRX cycle may be longer than the second DRX cycle, and the first target DRX cycle may be, for example, the first DRX cycle, so that the terminal device can detect the downlink transmission at a longer interval, which can save terminal equipment Power.
  • the terminal device may also start a third timer after switching to the second DRX cycle, and the third timer may be used to determine the length of stay of the terminal device in the second DRX cycle.
  • the third timer may be drx-ShortCycleTimer, for example.
  • the terminal device may switch to the second target DRX cycle after the drx-ShortCycleTimer expires, the cycle duration of the second target DRX cycle is greater than the cycle duration of the second DRX cycle, and the second target DRX cycle may be a long DRX cycle or For other DRX short cycles.
  • the drx-ShortCycleTimer under the unlicensed spectrum may be different from the drx-short cycle timer under the licensed spectrum.
  • two drx-cycle timers can be configured for the terminal device. ShortCycleTimer, one is used for DRX cycle switching under unlicensed spectrum, and the other is used for DRX cycle switching under licensed spectrum.
  • the terminal device can also configure only one drx-ShortCycleTimer, and use the same drx-ShortCycleTimer in the licensed spectrum and the unlicensed spectrum.
  • the terminal device can start drx-onDurationTimer according to formula 2. And detect the downlink transmission in drx-onDurationTimer. If the terminal device does not detect any downlink transmission within the duration of n1 drx-onDurationTimer of the first DRX cycle, the terminal device can switch to the second DRX cycle, and n1 is a positive integer.
  • the terminal device After the terminal device switches to the second DRX cycle, it can start the drx-onDurationTimer of the second DRX cycle according to formula 1 according to the configuration of the second DRX cycle, and detect the downlink signal within the duration of the drx-onDurationTimer of the second DRX cycle .
  • the terminal device can also start a drx-ShortCycleTimer.
  • the start trigger condition of the drx-ShortCycleTimer is the switching of the DRX cycle, and the drx-ShortCycleTimer may be the same as or different from the drx-ShortCycleTimer of the licensed spectrum.
  • the start trigger condition of the drx-ShortCycleTimer can also be compatible with existing protocols.
  • the drx-ShortCycleTimer can be started after the drx-InactivityTimer expires or after receiving the Command MAC CE sent by the network device.
  • the terminal device After the terminal device switches to the second DRX cycle, it can detect the downlink transmission in the drx-onDurationTimer of n2 second DRX cycles, where n2 is a positive integer, and n2 and n1 may be equal or different.
  • the terminal device can switch to the first DRX cycle.
  • the terminal device If the terminal device detects downlink transmission in the second DRX cycle, the terminal device can remain on the second DRX cycle.
  • Fig. 6 is another handover method according to the embodiment of the present application.
  • the terminal device can switch on multiple DRX cycles. Among them, the durations of the first DRX cycle, the second DRX cycle, and the third DRX cycle decrease sequentially.
  • the switching process of the terminal device from the first DRX cycle to the second DRX cycle is similar to the method shown in FIG. 5, and will not be repeated here.
  • the terminal device can switch the second DRX cycle to the third DRX cycle, where the third DRX cycle is smaller than the second DRX cycle.
  • the second DRX cycle and the third DRX cycle may be configured by the network device, or may be determined according to the first DRX cycle.
  • the terminal device may repeat the above steps until handover to the last DRX cycle of the multiple DRX cycles. If the third DRX cycle is the last DRX cycle among the multiple DRX cycles, the terminal device may remain on the third DRX cycle after switching to the third DRX cycle.
  • the second DRX cycle and the third DRX cycle may be determined by the terminal device according to the first DRX cycle.
  • the terminal device may obtain the first DRX cycle according to a certain reduction ratio and/or reduction times. Assuming that the second DRX cycle is obtained on the basis of the first DRX cycle according to the rule of reducing by half, the terminal device may reduce the cycle duration of the first DRX cycle by half to obtain the cycle duration of the second DRX cycle.
  • the third DRX cycle may be reduced twice on the basis of the first DRX cycle.
  • the embodiment of the present application may also specify the number of zooms, and the switching process of the terminal device may repeat the above steps until the number of zooms is reached. If the third DRX cycle is obtained by the last scaling, the terminal device can remain on the third DRX cycle.
  • the aforementioned scaling ratio and/or scaling times may be configured by the network device or specified in the protocol.
  • the terminal device can remain in the DRX cycle.
  • the terminal device can also start a drx-InactvivtyTimer to extend the duration of the terminal device in the activation period. That is to say, regardless of whether the downlink transmission detected by the terminal device is a PDCCH in the embodiment of the present application, for example, when the downlink transmission received by the terminal device indicates channel occupancy information, it can also start drx-InactvivtyTimer to extend the DRX active time (Active Time). ), so that the network device can also schedule the terminal device within the extended time, so as to improve the probability of the network device being scheduled to the terminal device.
  • a drx-InactvivtyTimer to extend the duration of the terminal device in the activation period. That is to say, regardless of whether the downlink transmission detected by the terminal device is a PDCCH in the embodiment of the present application, for example, when the downlink transmission received by the terminal device indicates channel occupancy information, it can also start drx-Inactvivty
  • the terminal device receives the downlink transmission, which also means that the network device channel interception is successful, so the terminal device also switches the DRX cycle according to the instruction information sent by the network device.
  • the terminal device can switch to any DRX cycle configured by the network device, and the switched DRX cycle may not be a long DRX cycle.
  • the DRX cycle of the handover may also be indicated by the network device.
  • the terminal device may receive instruction information sent by the network device, where the instruction information is used to indicate which DRX cycle to switch to.
  • the network device may further specify the switching sequence (or priority) of the multiple DRX cycles, and the terminal device may switch according to the switching sequence of the multiple DRX cycles.
  • the switching sequence of the multiple DRX cycles may be determined according to the cycle duration of the multiple DRX cycles. For example, the switching sequence of the multiple DRX cycles is determined according to the cycle length from large to small, so that if the terminal device fails to detect the downlink transmission, the DRX cycle can be continuously reduced to ensure the delay requirements of data transmission. It is helpful to improve the probability of network equipment dispatching to terminal equipment.
  • FIG. 7 is a schematic block diagram of a terminal device 700 according to an embodiment of the present application.
  • the terminal device shown in FIG. 7 may refer to the terminal device in the method embodiment.
  • the terminal device 700 includes a processing unit 710.
  • the processing unit 710 is configured to perform the following operations: start a first timer according to the first discontinuous reception DRX cycle; if no downlink transmission is detected within the duration of the n first timers, then the first DRX cycle Switch to the second DRX cycle, where the first DRX cycle is greater than the second DRX cycle, and n is a positive integer.
  • the terminal device if it does not detect any downlink transmission within the duration of the first timer of the first DRX cycle, it can directly switch the first DRX cycle to the second DRX cycle. Less than the first DRX cycle. This can avoid the problem that if the network device does not detect an available channel within the duration of the first timer, it can only wait until the next first timer of the first DRX cycle to detect the channel, which causes the problem of data transmission performance degradation.
  • the solution of the embodiment of the present application can enable the terminal device to directly switch to the second DRX cycle with a shorter period according to the detection result within the first timer duration even if the network device does not preempt the channel, and the network device can follow the second DRX cycle.
  • the DRX periodically detects the channel, which can reduce the time delay of data transmission, improve data transmission performance, and help improve the probability of network equipment dispatching to terminal equipment.
  • the terminal device 700 further includes a communication unit 720 configured to receive a first DRX configuration message sent by a network device, and the first DRX configuration message includes at least two DRX cycles.
  • the at least two DRX cycles include the first DRX cycle and the second DRX cycle.
  • the communication unit 720 is configured to receive the switching sequence of the at least two DRX cycles sent by the network device, and the first DRX cycle and the second DRX cycle are adjacent in the switching sequence. The two DRX cycles.
  • the switching sequence of the at least two DRX cycles is determined according to the cycle duration of the at least two DRX cycles.
  • the first DRX cycle is the DRX cycle with the longest cycle duration among the at least two DRX cycles.
  • the terminal device 700 further includes a communication unit 720 configured to receive a second DRX configuration message sent by a network device, and the second DRX configuration message includes the first DRX cycle;
  • the processing unit is configured to determine the second DRX cycle according to the first DRX cycle.
  • the processing unit 710 is configured to determine the period duration and/or the activation period duration of the second DRX cycle according to the first DRX cycle.
  • the period duration of the second DRX cycle is obtained according to the first reduction rule on the basis of the period duration of the first DRX cycle, and/or, the activation period duration of the second DRX cycle is Obtained according to the second reduction rule on the basis of the duration of the activation period of the first DRX cycle.
  • both the first reduction rule and the second reduction rule include a reduction ratio and/or a number of reductions.
  • the first reduction rule and/or the second reduction rule are configured by the network device or specified by a protocol.
  • the period duration of the second DRX cycle is half of the period duration of the first DRX cycle, and/or the activation period duration of the second DRX cycle is the activation period of the first DRX cycle Half the duration.
  • the processing unit 710 is configured to, if the downlink transmission is detected in the second DRX cycle, switch the second DRX cycle to the target DRX cycle according to the instruction information sent by the network device; or, If the downlink transmission is detected in the second DRX cycle, start a second timer; after the second timer expires, switch the second DRX cycle to the target DRX cycle.
  • the target DRX cycle is greater than the second DRX cycle.
  • the target DRX cycle is the first DRX cycle.
  • the processing unit 710 is configured to start a third timer according to the second DRX cycle when the first DRX cycle is switched to the second DRX cycle, and the third timing The device is used to determine the length of stay of the terminal device in the second DRX cycle.
  • the downlink transmission includes a downlink signal and/or a downlink channel
  • the downlink signal and/or a downlink channel includes at least one of the following: a physical downlink control channel, a downlink semi-permanent scheduled transmission, a downlink reference signal, a downlink Reference signal sequence.
  • the downlink reference signal sequence includes a demodulation reference signal DMRS sequence.
  • terminal device 700 can perform the corresponding operations performed by the terminal device in the foregoing method, and for the sake of brevity, details are not described herein again.
  • FIG. 8 is a schematic block diagram of a network device 800 provided by an embodiment of the present application.
  • the network device shown in FIG. 8 may refer to the network device in the method embodiment.
  • the network device 800 includes a processing unit 810.
  • the processing unit 810 may be configured to perform the following operations: in the case of the need to send a downlink transmission to the terminal device, detect the channel on the unlicensed spectrum; if it is within the duration of n first timers of the first discontinuous transmission DRX cycle If no available channel is detected, the first DRX cycle is switched to the second DRX cycle, where the first DRX cycle is greater than the second DRX cycle, and n is a positive integer; in the second DRX cycle, the The channel is tested.
  • the network device can switch the first DRX cycle to the second In the DRX cycle, the channel is detected in the second DRX cycle. This can reduce the time interval for channel detection, which is beneficial to increase the probability of network equipment scheduling to terminal equipment, and improve data transmission performance.
  • the network device 800 further includes a communication unit 820, configured to send a first DRX configuration message to the terminal device, where the first DRX configuration message includes at least two DRX cycles, and the at least two DRX cycles The cycle includes the first DRX cycle and the second DRX cycle.
  • a communication unit 820 configured to send a first DRX configuration message to the terminal device, where the first DRX configuration message includes at least two DRX cycles, and the at least two DRX cycles The cycle includes the first DRX cycle and the second DRX cycle.
  • the communication unit 820 is further configured to send a switching sequence of the at least two DRX cycles to the terminal device, and the first DRX cycle and the second DRX cycle are adjacent in the switching sequence.
  • the two DRX cycles are further configured to send a switching sequence of the at least two DRX cycles to the terminal device, and the first DRX cycle and the second DRX cycle are adjacent in the switching sequence. The two DRX cycles.
  • the switching sequence of the at least two DRX cycles is determined according to the cycle duration of the at least two DRX cycles.
  • the first DRX cycle is the DRX cycle with the longest cycle duration among the at least two DRX cycles.
  • the network device 800 further includes a communication unit 820, configured to send a second DRX configuration message to the terminal device, where the second DRX configuration message includes the first DRX cycle; the processing unit 810 It is used to determine the second DRX cycle according to the first DRX cycle.
  • a communication unit 820 configured to send a second DRX configuration message to the terminal device, where the second DRX configuration message includes the first DRX cycle; the processing unit 810 It is used to determine the second DRX cycle according to the first DRX cycle.
  • the processing unit 810 is configured to determine the period duration and/or the activation period duration of the second DRX cycle according to the first DRX cycle.
  • the period duration of the second DRX cycle is obtained according to the first reduction rule on the basis of the period duration of the first DRX cycle, and/or, the activation period duration of the second DRX cycle is Obtained according to the second reduction rule on the basis of the duration of the activation period of the first DRX cycle.
  • both the first reduction rule and the second reduction rule include a reduction ratio and/or a number of reductions.
  • the communication unit is configured to send the first reduction rule and/or the second reduction rule to the terminal device.
  • the period duration of the second DRX cycle is half of the period duration of the first DRX cycle, and/or the activation period duration of the second DRX cycle is the activation period of the first DRX cycle Half the duration.
  • the network device 800 further includes a communication unit 820, configured to send indication information to the terminal device in the case of sending the downlink transmission to the terminal device in the second DRX cycle to indicate the The terminal device switches from the second DRX cycle to the target DRX cycle.
  • a communication unit 820 configured to send indication information to the terminal device in the case of sending the downlink transmission to the terminal device in the second DRX cycle to indicate the The terminal device switches from the second DRX cycle to the target DRX cycle.
  • the target DRX cycle is greater than the second DRX cycle.
  • the target DRX cycle is the first DRX cycle.
  • the downlink transmission includes a downlink signal and/or a downlink channel
  • the downlink signal and/or a downlink channel includes at least one of the following: a physical downlink control channel, a downlink semi-permanent scheduled transmission, a downlink reference signal, a downlink Reference signal sequence.
  • the downlink reference signal sequence includes a demodulation reference signal DMRS sequence.
  • the network device 800 can perform the corresponding operations performed by the network device in the foregoing method, and for the sake of brevity, details are not described herein again.
  • FIG. 9 is a schematic structural diagram of a communication device 900 provided by an embodiment of the present application.
  • the communication device 900 shown in FIG. 9 includes a processor 910, and the processor 910 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the communication device 900 may further include a memory 920.
  • the processor 910 may call and run a computer program from the memory 920 to implement the method in the embodiment of the present application.
  • the memory 920 may be a separate device independent of the processor 910, or may be integrated in the processor 910.
  • the communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 930 may include a transmitter and a receiver.
  • the transceiver 930 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 900 may specifically be a terminal device of an embodiment of the present application, and the communication device 900 may implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application. For brevity, details are not repeated here. .
  • the processor 910 in the communication device 900 may be configured to perform the following operations: start a first timer according to the first discontinuous reception DRX cycle; if no downlink transmission is detected within the duration of n said first timers, Then the first DRX cycle is switched to the second DRX cycle, where the first DRX cycle is greater than the second DRX cycle, and n is a positive integer.
  • the communication device 900 may specifically be a network device of an embodiment of the application, and the communication device 900 may implement the corresponding process implemented by the network device in each method of the embodiment of the application. For brevity, details are not repeated here .
  • the processor 910 in the communication device 900 may be used to perform the following operations: when a downlink transmission needs to be sent to a terminal device, detect the channel on the unlicensed spectrum; if the first non-continuous transmission DRX cycle is n If no available channel is detected within the duration of the first timer, the first DRX cycle is switched to the second DRX cycle, where the first DRX cycle is greater than the second DRX cycle, and n is a positive integer; The second DRX cycle detects the channel.
  • Fig. 10 is a schematic structural diagram of a device according to an embodiment of the present application.
  • the apparatus 1000 shown in FIG. 10 includes a processor 1010, and the processor 1010 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the device 1000 may further include a memory 1020.
  • the processor 1010 can call and run a computer program from the memory 1020 to implement the method in the embodiment of the present application.
  • the memory 1020 may be a separate device independent of the processor 1010, or it may be integrated in the processor 1010.
  • the device 1000 may further include an input interface 1030.
  • the processor 1010 can control the input interface 1030 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the device 1000 may further include an output interface 1040.
  • the processor 1010 can control the output interface 1040 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.
  • the device can be applied to the terminal device in the embodiment of the present application, and the device can implement the corresponding process implemented by the terminal device in the various methods of the embodiment of the present application.
  • the device can implement the corresponding process implemented by the terminal device in the various methods of the embodiment of the present application.
  • the device can be applied to the network equipment in the embodiments of the present application, and the device can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application.
  • the device can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application.
  • details are not described herein again.
  • the device 1000 may be a chip. It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-level chips, system-on-chips, system-on-chips, or system-on-chips.
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only 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.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • Synchlink DRAM SLDRAM
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), Synchronous DRAM (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (Synch Link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.
  • FIG. 11 is a schematic block diagram of a communication system 1100 according to an embodiment of the present application. As shown in FIG. 11, the communication system 1100 includes a network device 1110 and a terminal device 1120.
  • the network device 1110 is used to detect the channel on the unlicensed spectrum when the downlink transmission needs to be sent to the terminal device; if it is within the duration of n first timers of the first discontinuous transmission DRX cycle If no available channel is detected, the first DRX cycle is switched to the second DRX cycle, where the first DRX cycle is greater than the second DRX cycle, and n is a positive integer; in the second DRX cycle, the The channel is tested.
  • the terminal device 1120 is configured to: start a first timer according to the first discontinuous reception DRX cycle; if no downlink transmission is detected within the duration of the n first timers, set the first DRX cycle Switch to the second DRX cycle, where the first DRX cycle is greater than the second DRX cycle, and n is a positive integer.
  • the network device 1110 can be used to implement the corresponding functions implemented by the network device in the above method, and the composition of the network device 1110 can be as shown in the network device 800 in FIG. 8. For the sake of brevity, it will not be omitted here. Repeat.
  • the terminal device 1120 can be used to implement the corresponding functions implemented by the terminal device in the foregoing method, and the composition of the terminal device 1120 can be as shown in the terminal device 700 in FIG. Repeat.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer-readable storage medium can be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the computer-readable storage medium can be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application. For brevity, here No longer.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program product can be applied to the terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the computer program product can be applied to the terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • I won’t repeat it here the computer program can be applied to the terminal device in the embodiment of the present application.
  • the computer program runs on the computer, it causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • B corresponding (corresponding) to A means that B is associated with A, and B can be determined according to A.
  • determining B according to A does not mean that B is determined only according to A, and B can also be determined according to A and/or other information.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the unit is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or may be Integrate 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 they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each 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 function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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

Abstract

L'invention concerne un procédé et un appareil de réception discontinue sur un spectre sans licence, capables d'améliorer les performances de transmission de données. Le procédé comprend : par un appareil terminal, l'activation d'une première minuterie selon un premier cycle de réception discontinue (DRX) ; et, si aucune transmission en liaison descendante n'est détectée au sein de n durées de la première minuterie, par l'appareil terminal, la commutation du premier cycle de DRX à un second cycle de DRX, le premier cycle de DRX étant supérieur au second cycle de DRX, et n étant un nombre entier positif.
PCT/CN2019/078787 2019-03-19 2019-03-19 Procédé et appareil pour réception discontinue sur spectre sans licence WO2020186467A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980016771.0A CN111972041B (zh) 2019-03-19 2019-03-19 非授权频谱上非连续接收的方法、设备、芯片及存储介质
PCT/CN2019/078787 WO2020186467A1 (fr) 2019-03-19 2019-03-19 Procédé et appareil pour réception discontinue sur spectre sans licence

Applications Claiming Priority (1)

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PCT/CN2019/078787 WO2020186467A1 (fr) 2019-03-19 2019-03-19 Procédé et appareil pour réception discontinue sur spectre sans licence

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