WO2020091422A1 - Procédé de surveillance de pdcch effectué par un terminal dans un système de communication sans fil, et terminal mettant en œuvre ce procédé - Google Patents

Procédé de surveillance de pdcch effectué par un terminal dans un système de communication sans fil, et terminal mettant en œuvre ce procédé Download PDF

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Publication number
WO2020091422A1
WO2020091422A1 PCT/KR2019/014487 KR2019014487W WO2020091422A1 WO 2020091422 A1 WO2020091422 A1 WO 2020091422A1 KR 2019014487 W KR2019014487 W KR 2019014487W WO 2020091422 A1 WO2020091422 A1 WO 2020091422A1
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WIPO (PCT)
Prior art keywords
wake
terminal
signal
opportunity
drx
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English (en)
Korean (ko)
Inventor
유향선
이윤정
황대성
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LG Electronics Inc
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LG Electronics Inc
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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

  • This disclosure relates to wireless communication.
  • next-generation wireless access technology As more communication devices require a larger communication capacity, there is a need for improved mobile broadband communication compared to a conventional radio access technology (RAT).
  • Massive Machine Type Communications (MTC) which provides various services anytime, anywhere by connecting multiple devices and objects, is also one of the major issues to be considered in next-generation communication.
  • communication system design considering services / terminals that are sensitive to reliability and latency is being discussed.
  • next-generation wireless access technology in consideration of such extended mobile broadband communication, massive MTC, and Ultra-Reliable and Low Latency Communication (URLLC) is discussed, and in the present disclosure, for convenience, the corresponding technology (technology) Is called new RAT or NR.
  • a DRX operation is used to reduce power consumption of a terminal.
  • the terminal does not perform data transmission / reception in all DRX ON periods, and in the DRX ON period in which data transmission / reception is not performed, the UE wakes up unnecessarily to perform PDCCH monitoring. Therefore, there is a need to solve the problem of wasting power due to the terminal waking up unnecessarily in the DRX ON section where data transmission / reception is not expected.
  • the technical problem to be solved through the present disclosure is to provide a method for performing PDCCH monitoring performed by a terminal in a wireless communication system and a terminal using the method.
  • a method of performing physical downlink control channel (PDCCH) monitoring performed by a terminal in a wireless communication system detects a wake-up signal for each of a plurality of wake-up signal opportunities (occasions) in the on-duration period, wherein the on-duration period is a time period set for performing the PDCCH monitoring,
  • the PDCCH monitoring is performed, but if the wake-up signal is not detected at a specific wake-up signal opportunity among the plurality of wake-up signal opportunities, the terminal performs the monitoring in the time domain. It is characterized in that a sleep operation is performed from a specific wake-up signal opportunity to a close time of a next wake-up signal opportunity of the specific wake-up signal opportunity or a time point when the on-duration period ends.
  • Each of the plurality of wake-up signal opportunities may be periodically located within the on-duration period.
  • a position on the time domain of each of the plurality of wake-up signal opportunities is determined based on wake-up signal information, and the wake-up signal information is a period of each of the plurality of wake-up signal opportunities and the on- The offset based on the starting point of the duration period can be reported.
  • the wake-up signal information may be transmitted to the terminal through a radio resource control (RRC) message.
  • RRC radio resource control
  • the terminal When the terminal detects a PDCCH based on the PDCCH monitoring at the specific wake-up signal opportunity, the terminal may receive data.
  • the terminal may receive the data within a discontinuous reception (DRX) inactivity time.
  • DRX discontinuous reception
  • the DRX inactivity time may be a specific time period, and the specific time period may be a time period from the time when the PDCCH is detected in the time domain to a specific time after the on-duration period ends.
  • the DRX inactivity time may be determined by a DRX inactivity timer.
  • the value of the DRX inactivity timer may be transmitted to the terminal through a radio resource control (RRC) message.
  • RRC radio resource control
  • the PDCCH monitoring time period which is a time period during which the PDCCH monitoring is performed, is selected from a specific wake-up signal opportunity to a next wake-up signal opportunity or the on-duration period of the specific wake-up signal opportunity in a time domain. It may be a time period up to the nearest point.
  • the PDCCH monitoring time period which is a time period during which the PDCCH monitoring is performed, may be a time period from the specific wake-up signal opportunity in the time domain to a time point when the on-duration period ends.
  • the terminal may not detect the wake-up signal at a wake-up signal opportunity that overlaps the PDCCH monitoring time period.
  • the sleep operation may include that the terminal does not perform the PDCCH monitoring.
  • a user equipment provided in another aspect includes a transceiver that transmits and receives a radio signal and a processor operating in combination with the transceiver, wherein the processor includes a plurality of wakes in an on-duration period A wake-up signal is detected for each of the up-up signal opportunities, wherein the on-duration period is a time period set for performing the PDCCH monitoring, and when the wake-up signal is detected, the PDCCH monitoring is performed. If the wake-up signal is not detected in a specific wake-up signal opportunity among the plurality of wake-up signal opportunities, the terminal performs the specific wake-up signal from the specific wake-up signal opportunity in a time domain. The next wake-up signal of the opportunity, or the on-duration section ends, sleeps to the nearest point. It characterized in that it performs.
  • the terminal may be a terminal that communicates with at least one of a mobile terminal, a network, and an autonomous vehicle other than the terminal.
  • a plurality of wake-up signal opportunities exist in one on-duration period, and the terminal can detect a wake-up signal at each of the plurality of wake-up signal opportunities. Therefore, the wake-up operation of the terminal according to the detection of the wake-up signal can be performed more flexibly and efficiently. Furthermore, since the packet / data reception delay can be reduced, a wake-up operation of a terminal more suitable for a next-generation communication system can be implemented.
  • 1 illustrates a wireless communication system
  • FIG. 2 is a block diagram showing a radio protocol architecture for a user plane.
  • 3 is a block diagram showing a radio protocol structure for a control plane.
  • NG-RAN New Generation Radio Access Network
  • 5 illustrates functional division between NG-RAN and 5GC.
  • FIG. 6 illustrates a frame structure that can be applied in NR.
  • FIG. 8 is a view showing a difference between a conventional control region and CORESET in NR.
  • FIG 9 shows an example of a frame structure for a new radio access technology.
  • FIG. 10 is an abstract diagram of a hybrid beamforming structure from the perspective of the TXRU and the physical antenna.
  • FIG. 11 is a diagram illustrating the beam sweeping operation for a synchronization signal and system information in a downlink (DL) transmission process.
  • FIG. 13 is a flowchart illustrating an example of performing an idle mode DRX operation.
  • 15 is a flowchart showing an example of a method for performing a C-DRX operation.
  • 19 is for explaining an example of the C-DRX operation of the terminal associated with the wake-up signal.
  • FIG. 20 schematically illustrates an example of a method of receiving a wake-up signal and an operation method based on a wake-up signal of a terminal according to some implementations of the present disclosure.
  • FIG. 21 schematically illustrates another example of a method of receiving a wake-up signal and an operation method based on a wake-up signal of a terminal according to some implementations of the present disclosure.
  • FIG. 22 schematically illustrates another example of a method of receiving a wake-up signal and an operation method based on a wake-up signal of a terminal according to some implementations of the present disclosure.
  • FIG. 23 schematically illustrates another example of a method of receiving a wake-up signal and an operation method based on a wake-up signal of a terminal according to some implementations of the present disclosure.
  • FIG. 24 schematically illustrates another example of a method of receiving a wake-up signal and an operation method based on a wake-up signal of a terminal according to some implementations of the present disclosure.
  • FIG. 25 schematically illustrates another example of a method of receiving a wake-up signal and an operation method based on a wake-up signal of a terminal according to some implementations of the present disclosure.
  • 26 schematically illustrates another example of a method of receiving a wake-up signal and an operation method based on a wake-up signal of a terminal according to some implementations of the present disclosure.
  • FIG. 27 schematically illustrates another example of a method for receiving a wake-up signal of a terminal and an operation method based on a wake-up signal, according to some implementations of the present disclosure.
  • FIG. 28 is a flowchart for an example of a method of performing a PDCCH monitoring operation performed by a terminal according to some implementations of the present disclosure.
  • 29 illustrates a communication system 1 applied to the present disclosure.
  • FIG. 30 illustrates a wireless device that can be applied to the present disclosure.
  • 31 illustrates a signal processing circuit for a transmission signal.
  • a / B may mean “A and / or B”.
  • A, B may mean “A and / or B”.
  • a / B / C may mean “at least one of A, B, and / or C”.
  • A, B, and C may mean “at least one of A, B, and / or C”.
  • E-UTRAN Evolved-UMTS Terrestrial Radio Access Network
  • LTE Long Term Evolution
  • the E-UTRAN includes a base station (BS) that provides a control plane and a user plane to a user equipment (UE) 10.
  • the terminal 10 may be fixed or mobile, and may be called other terms such as a mobile station (MS), a user terminal (UT), a subscriber station (SS), a mobile terminal (MT), or a wireless device.
  • the base station 20 refers to a fixed station communicating with the terminal 10, and may be referred to as other terms such as an evolved-NodeB (eNB), a base transceiver system (BTS), and an access point.
  • eNB evolved-NodeB
  • BTS base transceiver system
  • the base stations 20 may be connected to each other through an X2 interface.
  • the base station 20 is connected to an EPC (Evolved Packet Core, 30) through an S1 interface, and more specifically, a mobility management entity (MME) through an S1-MME and a serving gateway (S-GW) through an S1-U.
  • EPC Evolved Packet Core, 30
  • MME mobility management entity
  • S-GW serving gateway
  • EPC 30 is composed of MME, S-GW and P-GW (Packet Data Network-Gateway).
  • the MME has information about the access information of the terminal or the capability of the terminal, and this information is mainly used for mobility management of the terminal.
  • S-GW is a gateway with E-UTRAN as an endpoint
  • P-GW is a gateway with PDN as an endpoint.
  • the layers of the radio interface protocol between the terminal and the network are based on the lower three layers of the Open System Interconnection (OSI) reference model, which is widely known in communication systems, L1 (first layer), It can be divided into L2 (second layer) and L3 (third layer).
  • OSI Open System Interconnection
  • the physical layer belonging to the first layer provides an information transfer service using a physical channel.
  • the radio resource control (RRC) layer located in the third layer serves to control radio resources between the terminal and the network. To this end, the RRC layer exchanges RRC messages between the terminal and the base station.
  • the 2 is a block diagram showing a radio protocol architecture for a user plane.
  • 3 is a block diagram showing a radio protocol structure for a control plane.
  • the user plane is a protocol stack for transmitting user data
  • the control plane is a protocol stack for transmitting control signals.
  • a physical layer provides an information transfer service (information transfer service) to the upper layer by using a physical channel (physical channel).
  • the physical layer is connected to the upper layer of the MAC (Medium Access Control) layer through a transport channel. Data moves between the MAC layer and the physical layer through the transport channel. Transport channels are classified according to how and with what characteristics data is transmitted through a wireless interface.
  • the physical channel can be modulated by an orthogonal frequency division multiplexing (OFDM) method, and utilizes time and frequency as radio resources.
  • OFDM orthogonal frequency division multiplexing
  • the functions of the MAC layer include mapping between logical channels and transport channels and multiplexing / demultiplexing into transport blocks provided as physical channels on transport channels of MAC service data units (SDUs) belonging to logical channels.
  • the MAC layer provides a service to a Radio Link Control (RLC) layer through a logical channel.
  • RLC Radio Link Control
  • the functions of the RLC layer include concatenation, segmentation and reassembly of RLC SDUs.
  • the RLC layer includes a transparent mode (TM), an unacknowledged mode (UM), and an acknowledgment mode (Acknowledged Mode).
  • TM transparent mode
  • UM unacknowledged mode
  • Acknowledged Mode acknowledgment mode
  • AM AM RLC provides error correction through automatic repeat request (ARQ).
  • RRC Radio Resource Control
  • the RRC layer is responsible for the control of logical channels, transport channels, and physical channels in connection with configuration, re-configuration, and release of radio bearers.
  • RB means a logical path provided by the first layer (PHY layer) and the second layer (MAC layer, RLC layer, PDCP layer) for data transmission between the terminal and the network.
  • the functions of the Packet Data Convergence Protocol (PDCP) layer in the user plane include the transfer of user data, header compression, and ciphering.
  • the functions of the Packet Data Convergence Protocol (PDCP) layer in the control plane include transmission of control plane data and encryption / integrity protection.
  • Setting RB means a process of defining characteristics of a radio protocol layer and a channel to provide a specific service, and setting each specific parameter and operation method.
  • the RB can be further divided into two types: SRB (Signaling RB) and DRB (Data RB).
  • SRB is used as a channel for transmitting RRC messages in the control plane
  • DRB is used as a channel for transmitting user data in the user plane.
  • the UE When an RRC connection is established between the RRC layer of the UE and the RRC layer of the E-UTRAN, the UE is in an RRC connected state, otherwise it is in an RRC idle state.
  • a downlink transport channel for transmitting data from a network to a terminal includes a broadcast channel (BCH) for transmitting system information and a downlink shared channel (SCH) for transmitting user traffic or control messages. Traffic or control messages of a downlink multicast or broadcast service may be transmitted through a downlink SCH or may be transmitted through a separate downlink multicast channel (MCH).
  • BCH broadcast channel
  • SCH downlink shared channel
  • Traffic or control messages of a downlink multicast or broadcast service may be transmitted through a downlink SCH or may be transmitted through a separate downlink multicast channel (MCH).
  • MCH downlink multicast channel
  • an uplink transport channel for transmitting data from a terminal to a network includes a random access channel (RACH) for transmitting an initial control message and an uplink shared channel (SCH) for transmitting user traffic or a control message.
  • RACH random access channel
  • Logical channels that are located above the transport channel and are mapped to the transport channel include BCCH (Broadcast Control Channel), PCCH (Paging Control Channel), CCCH (Common Control Channel), MCCH (Multicast Control Channel), and MTCH (Multicast Traffic). Channel).
  • BCCH Broadcast Control Channel
  • PCCH Paging Control Channel
  • CCCH Common Control Channel
  • MCCH Multicast Control Channel
  • MTCH Multicast Traffic. Channel
  • a physical channel is composed of several OFDM symbols in the time domain and several sub-carriers in the frequency domain.
  • One sub-frame is composed of a plurality of OFDM symbols in the time domain.
  • the resource block is a resource allocation unit, and is composed of a plurality of OFDM symbols and a plurality of sub-carriers.
  • each subframe may use specific subcarriers of specific OFDM symbols (eg, the first OFDM symbol) of the corresponding subframe for a physical downlink control channel (PDCCH), that is, an L1 / L2 control channel.
  • PDCCH physical downlink control channel
  • TTI Transmission Time Interval
  • new radio access technology new RAT, NR
  • next-generation wireless access technology As more communication devices require a larger communication capacity, there is a need for improved mobile broadband communication compared to a conventional radio access technology (RAT).
  • Massive Machine Type Communications (MTC) which provides various services anytime, anywhere by connecting multiple devices and objects, is also one of the major issues to be considered in next-generation communication.
  • communication system design considering services / terminals that are sensitive to reliability and latency is being discussed.
  • next-generation wireless access technology in consideration of such extended mobile broadband communication, massive MTC, and Ultra-Reliable and Low Latency Communication (URLLC) is discussed, and in the present disclosure, for convenience, the corresponding technology (technology) Is called new RAT or NR.
  • NG-RAN New Generation Radio Access Network
  • the NG-RAN may include a gNB and / or eNB that provides a user plane and control plane protocol termination to a terminal.
  • 4 illustrates a case in which only the gNB is included.
  • the gNB and the eNB are connected to each other by an Xn interface.
  • the gNB and the eNB are connected through a 5G Core Network (5GC) and an NG interface.
  • 5GC 5G Core Network
  • AMF access and mobility management function
  • UPF user plane function
  • 5 illustrates functional division between NG-RAN and 5GC.
  • gNB is an inter-cell radio resource management (Inter Cell RRM), radio bearer management (RB control), connection mobility control (Connection Mobility Control), radio admission control (Radio Admission Control), measurement settings and provision Functions such as (Measurement configuration & Provision) and dynamic resource allocation may be provided.
  • AMF can provide functions such as NAS security and idle state mobility processing.
  • UPF may provide functions such as mobility anchoring and PDU processing.
  • the Session Management Function (SMF) can provide functions such as terminal IP address allocation and PDU session control.
  • FIG. 6 illustrates a frame structure that can be applied in NR.
  • a frame may be composed of 10 milliseconds (ms), and may include 10 subframes composed of 1 ms.
  • One or a plurality of slots may be included in a subframe according to subcarrier spacing.
  • Table 1 below illustrates the subcarrier spacing configuration ⁇ .
  • Table 2 illustrates the number of slots in a frame (N frame ⁇ slot ), the number of slots in a subframe (N subframe ⁇ slot ), the number of symbols in a slot (N slot symb ), etc. according to the subcarrier spacing configuration ⁇ .
  • ⁇ 0, 1, and 2 are illustrated.
  • a physical downlink control channel may be composed of one or more control channel elements (CCEs) as shown in Table 3 below.
  • CCEs control channel elements
  • the PDCCH may be transmitted through a resource composed of 1, 2, 4, 8 or 16 CCEs.
  • the CCE is composed of six resource element groups (REGs), and one REG is composed of one resource block in the frequency domain and one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.
  • REGs resource element groups
  • OFDM orthogonal frequency division multiplexing
  • a new unit called a control resource set can be introduced.
  • the terminal may receive the PDCCH in CORESET.
  • CORESET is composed of N CORESET RB resource blocks in the frequency domain and N CORESET symb ⁇ ⁇ 1, 2, 3 ⁇ symbols in the time domain.
  • N CORESET RB and N CORESET symb may be provided by a base station through a higher layer signal.
  • a plurality of CCEs (or REGs) may be included in CORESET.
  • the UE may attempt to detect PDCCH in units of 1, 2, 4, 8 or 16 CCEs in CORESET.
  • PDCCH candidates One or a plurality of CCEs capable of attempting PDCCH detection may be referred to as PDCCH candidates.
  • the terminal may receive a plurality of CORESETs.
  • FIG. 8 is a view showing a difference between a conventional control region and CORESET in NR.
  • the control area 800 in a conventional wireless communication system (eg, LTE / LTE-A) is configured over the entire system band used by a base station. All terminals, except for some terminals (for example, eMTC / NB-IoT terminals) supporting only a narrow band, receive radio signals in the entire system band of the base station in order to properly receive / decode control information transmitted by the base station. I should be able to.
  • CORESET (801, 802, 803) may be referred to as a radio resource for control information that the terminal should receive, and may use only a part of the entire system band instead.
  • the base station can allocate CORESET to each terminal, and can transmit control information through the assigned CORESET.
  • the first CORESET 801 may be allocated to the terminal 1
  • the second CORESET 802 may be allocated to the second terminal
  • the third CORESET 803 may be allocated to the terminal 3.
  • the terminal in the NR can receive control information of the base station even if it does not necessarily receive the entire system band.
  • the CORESET there may be a terminal-specific CORESET for transmitting terminal-specific control information and a common CORESET for transmitting control information common to all terminals.
  • DCI downlink control information
  • a downlink control channel eg, a physical downlink control channel: PDCCH
  • the target block error rate (BLER) for) may be significantly lower than in the prior art.
  • the amount of content included in DCI may be reduced, and / or the amount of resources used for DCI transmission may be increased.
  • the resource may include at least one of resources in the time domain, resources in the frequency domain, resources in the code domain, and resources in the spatial domain.
  • FIG 9 shows an example of a frame structure for a new radio access technology.
  • a structure in which a control channel and a data channel are time-division multiplexed (TDM) within one TTI is considered as one of the frame structures for the purpose of minimizing latency. Can be.
  • the hatched area indicates a downlink control area, and the black part indicates an uplink control area.
  • the region without an indication may be used for downlink data (DL data) transmission, or may be used for uplink data (UL data) transmission.
  • the characteristic of this structure is that downlink (DL) transmission and uplink (UL) transmission are sequentially performed in one subframe, DL data is transmitted in a subframe, and UL ACK / NACK (Acknowledgement / Not-acknowledgement) is also available. As a result, when a data transmission error occurs, it takes less time to retransmit the data, thereby minimizing latency of the final data transmission.
  • a type gap for a base station and a UE to switch from a transmission mode to a receiving mode or a switching process from a receiving mode to a transmitting mode ) Is required.
  • some OFDM symbols at a time point of switching from DL to UL may be set as a guard period (GP).
  • the wavelength is shortened, so that it is possible to install multiple antenna elements in the same area. That is, in the 30 GHz band, the wavelength is 1 cm, and a total of 100 antenna elements can be installed in a two-dimensional arrangement at 0.5 wavelength intervals on a 5 by 5 cm panel. Therefore, in mmW, a plurality of antenna elements are used to increase beamforming (BF) gain to increase coverage or increase throughput.
  • BF beamforming
  • TXRU Transceiver Unit
  • hybrid beamforming having B TXRUs, which are fewer than Q antenna elements, as an intermediate form of digital beamforming (analog BF) and digital beamforming (analog BF).
  • analog BF digital beamforming
  • analog BF digital beamforming
  • the analog beamforming (or RF beamforming) performs precoding (or combining) at the RF stage, which results in the number of RF chains and the number of D / A (or A / D) converters. It has the advantage of being able to achieve a performance close to digital beamforming while reducing.
  • the hybrid beamforming structure may be represented by N TXRUs and M physical antennas.
  • digital beamforming for the L data layers to be transmitted by the transmitting end can be represented by an N by L matrix, and the converted N digital signals are then converted into analog signals through TXRU. After conversion, analog beamforming represented by an M by N matrix is applied.
  • FIG. 10 is an abstract diagram of a hybrid beamforming structure from the perspective of the TXRU and the physical antenna.
  • the number of digital beams is L
  • the number of analog beams is N.
  • the base station is designed to change the analog beamforming on a symbol-by-symbol basis, and considers a direction for supporting more efficient beamforming to terminals located in a specific region. Further, when defining a specific N TXRU and M RF antennas in FIG. 10 as one antenna panel, the NR system considers a method of introducing a plurality of antenna panels to which hybrid beamforming independent of each other is applicable. Is becoming.
  • a specific subframe is at least for a synchronization signal, system information, and paging.
  • a beam sweeping operation is being considered in which a plurality of analog beams to be applied by a base station is changed for each symbol so that all terminals have a reception opportunity.
  • FIG. 11 is a diagram illustrating the beam sweeping operation for a synchronization signal and system information in a downlink (DL) transmission process.
  • a physical resource (or physical channel) in which system information of an NR system is transmitted in a broadcasting method is designated as a physical broadcast channel (xPBCH).
  • xPBCH physical broadcast channel
  • analog beams belonging to different antenna panels within one symbol can be simultaneously transmitted, and a single analog beam (corresponding to a specific antenna panel) is applied as illustrated in FIG. 11 to measure channels for each analog beam.
  • a method for introducing a beam reference signal (Beam RS: BRS), which is a reference signal (RS) to be transmitted, is being discussed.
  • the BRS may be defined for a plurality of antenna ports, and each antenna port of the BRS may correspond to a single analog beam.
  • a synchronization signal or xPBCH can be transmitted by applying all analog beams in an analog beam group so that any UE can receive it well.
  • FIG. 12 shows an example of a 5G usage scenario to which the technical features of the present disclosure can be applied.
  • the 5G usage scenario shown in FIG. 12 is merely exemplary, and the technical features of the present disclosure can be applied to other 5G usage scenarios not shown in FIG. 12.
  • the three main requirements areas of 5G are (1) an enhanced mobile broadband (eMBB) area, (2) a large amount of machine type communication (mMTC) area, and ( 3) Ultra-reliable and low latency communications (URLLC) domain.
  • eMBB enhanced mobile broadband
  • mMTC machine type communication
  • URLLC Ultra-reliable and low latency communications
  • Some use cases may require multiple areas for optimization, and other use cases may focus on only one key performance indicator (KPI).
  • KPI key performance indicator
  • eMBB focuses on improving overall data rate, latency, user density, capacity and coverage of mobile broadband connections.
  • eMBB targets throughput of about 10 Gbps.
  • eMBB goes far beyond basic mobile Internet access and covers media and entertainment applications in rich interactive work, cloud or augmented reality.
  • Data is one of the key drivers of 5G, and it may not be possible to see dedicated voice services for the first time in the 5G era.
  • voice is expected to be handled as an application simply using the data connection provided by the communication system.
  • the main causes of increased traffic volume are increased content size and increased number of applications requiring high data rates.
  • Streaming services audio and video
  • interactive video and mobile internet connections will become more widely used as more devices connect to the internet.
  • Cloud storage and applications are rapidly increasing in mobile communication platforms, which can be applied to both work and entertainment.
  • Cloud storage is a special use case that drives the growth of uplink data rates.
  • 5G is also used for remote work on the cloud and requires much lower end-to-end delay to maintain a good user experience when a tactile interface is used.
  • cloud gaming and video streaming are another key factor in increasing the demand for mobile broadband capabilities.
  • Entertainment is essential on smartphones and tablets anywhere, including in high mobility environments such as trains, cars and airplanes.
  • Another use case is augmented reality and information retrieval for entertainment.
  • augmented reality requires very low delay and instantaneous amount of data.
  • mMTC is designed to enable communication between large amounts of low-cost devices powered by batteries, and is intended to support applications such as smart metering, logistics, field and body sensors.
  • mMTC targets 10 years of battery and / or 1 million devices per km2.
  • mMTC enables seamless connection of embedded sensors in all fields and is one of the most anticipated 5G use cases. Potentially, 2020 is expected to reach 20.4 billion IoT devices.
  • Industrial IoT is one of the areas where 5G plays a key role in enabling smart cities, asset tracking, smart utilities, agriculture and security infrastructure.
  • URLLC is ideal for vehicle communications, industrial control, factory automation, telesurgery, smart grid and public safety applications by enabling devices and machines to communicate with high reliability and very low latency and high availability.
  • URLLC aims for a delay of about 1ms.
  • URLLC includes new services that will transform the industry through ultra-trust / low-latency links such as remote control of key infrastructure and autonomous vehicles. Reliability and level of delay are essential for smart grid control, industrial automation, robotics, drone control and coordination.
  • 5G can complement fiber-to-the-home (FTTH) and cable-based broadband (or DOCSIS) as a means to provide streams rated at hundreds of megabits per second to gigabit per second.
  • FTTH fiber-to-the-home
  • DOCSIS cable-based broadband
  • Such fast speeds may be required to deliver TV in 4K (6K, 8K and higher) resolutions as well as virtual reality (VR) and augmented reality (AR).
  • VR and AR applications include almost immersive sports events. Certain applications may require special network settings. For VR games, for example, a game company may need to integrate a core server with a network operator's edge network server to minimize latency.
  • Automotive is expected to be an important new driver for 5G, with many examples of use for mobile communications to vehicles. For example, entertainment for passengers requires high capacity and high mobile broadband simultaneously. This is because future users continue to expect high-quality connections regardless of their location and speed.
  • Another example of use in the automotive field is the augmented reality dashboard.
  • the augmented reality contrast board allows the driver to identify objects in the dark over what is being viewed through the front window.
  • the augmented reality dashboard superimposes information to inform the driver about the distance and movement of the object.
  • wireless modules will enable communication between vehicles, exchange of information between the vehicle and the supporting infrastructure, and exchange of information between the vehicle and other connected devices (eg, devices carried by pedestrians).
  • the safety system helps the driver reduce the risk of accidents by guiding an alternative course of action to make driving safer.
  • the next step will be a remote controlled vehicle or an autonomous vehicle.
  • This requires very reliable and very fast communication between different autonomous vehicles and / or between the vehicle and the infrastructure.
  • autonomous vehicles will perform all driving activities, and drivers will focus only on traffic beyond which the vehicle itself cannot identify.
  • the technical requirements of autonomous vehicles require ultra-low latency and ultra-high-speed reliability to increase traffic safety to a level that cannot be achieved by humans.
  • Smart cities and smart homes will be embedded in high-density wireless sensor networks.
  • the distributed network of intelligent sensors will identify the conditions for cost and energy efficient maintenance of a city or home. Similar settings can be made for each assumption.
  • Temperature sensors, window and heating controllers, burglar alarms and consumer electronics are all connected wirelessly. Many of these sensors typically require low data rates, low power and low cost. However, for example, real-time HD video may be required in certain types of devices for surveillance.
  • the smart grid interconnects these sensors using digital information and communication technologies to collect information and act accordingly. This information can include supplier and consumer behavior, allowing smart grids to improve efficiency, reliability, economics, production sustainability and distribution of fuels such as electricity in an automated manner.
  • the smart grid can be viewed as another sensor network with low latency.
  • the health sector has a number of applications that can benefit from mobile communications.
  • the communication system can support telemedicine that provides clinical care from a distance. This helps to reduce barriers to distance and can improve access to medical services that are not continuously available in remote rural areas. It is also used to save lives in critical care and emergency situations.
  • a wireless sensor network based on mobile communication can provide remote monitoring and sensors for parameters such as heart rate and blood pressure.
  • Wireless and mobile communications are becoming increasingly important in industrial applications. Wiring is expensive to install and maintain. Thus, the possibility of replacing the cable with a radio link that can be reconfigured is an attractive opportunity in many industries. However, achieving this requires that the wireless connection behave with cable-like delay, reliability and capacity, and that management be simplified. Low latency and very low error probability are new requirements that need to be connected to 5G.
  • Logistics and cargo tracking is an important use case for mobile communications that enables the tracking of inventory and packages from anywhere using location-based information systems. Logistics and freight tracking use cases typically require low data rates, but require wide range and reliable location information.
  • DRX Discontinuous Reception
  • Discontinuous reception refers to an operation mode in which a user equipment (UE) reduces battery consumption to allow a UE to discontinuously receive a downlink channel. That is, the UE configured as DRX can reduce power consumption by discontinuously receiving the downlink signal.
  • UE user equipment
  • the DRX operation is performed within a DRX cycle indicating a time interval in which On Duration is periodically repeated.
  • the DRX cycle includes on duration and sleep duration (or chance of DRX).
  • On duration indicates the time interval during which the UE monitors the PDCCH to receive the PDCCH.
  • DRX may be performed in a Radio Resource Control (RRC) _IDLE state (or mode), RRC_INACTIVE state (or mode), or RRC_CONNECTED state (or mode).
  • RRC Radio Resource Control
  • DRX can be used to discontinuously receive the paging signal.
  • -RRC_IDLE state a state in which a radio connection (RRC connection) between the base station and the UE is not established (established).
  • -RRC_INACTIVE state a radio connection (RRC connection) is established between the base station and the UE, but the radio connection is deactivated.
  • -RRC_CONNECTED state A state in which a radio connection (RRC connection) is established between the base station and the UE.
  • DRX can be basically divided into an idle mode DRX, a connected DRX (C-DRX), and an extended DRX.
  • DRX applied in the IDLE state may be referred to as an idle mode DRX, and DRX applied in a CONNECTED state may be referred to as a connected mode DRX (C-DRX).
  • C-DRX connected mode DRX
  • eDRX Extended / Enhanced DRX
  • eDRX Extended / Enhanced DRX
  • SIB1 system information
  • SIB1 may include an eDRX-allowed parameter.
  • the eDRX-allowed parameter is a parameter indicating whether idle mode extended DRX is allowed.
  • paging occasion is a PDCCH (Physical Downlink Control Channel) or PDCCH (MTC PDCCH) in which a Paging-Radio Network Temporary Identifier (P-RNTI) addresses a paging message for NB-IoT. ) Or a subframe that can be transmitted through a narrowband PDCCH (NPDCCH).
  • PDCCH Physical Downlink Control Channel
  • MTC PDCCH PDCCH
  • P-RNTI Paging-Radio Network Temporary Identifier
  • NPDCCH narrowband PDCCH
  • PO may indicate a start subframe of MPDCCH repetition.
  • the PO may indicate the start subframe of the NPDCCH repetition. Therefore, the first valid NB-IoT downlink subframe after PO is the start subframe of NPDCCH repetition.
  • One paging frame is one radio frame that may include one or more paging opportunities. When DRX is used, the UE only needs to monitor one PO per DRX cycle.
  • One paging narrow band is one narrow band in which the UE performs paging message reception. PF, PO and PNB may be determined based on DRX parameters provided in system information.
  • FIG. 13 is a flowchart illustrating an example of performing an idle mode DRX operation.
  • the terminal may receive idle mode DRX configuration information from the base station through higher layer signaling (eg, system information) (S1310).
  • higher layer signaling eg, system information
  • the UE may determine a Paging Frame (PF) and a Paging Occasion (PO) to monitor the PDCCH in the paging DRX cycle based on the idle mode DRX configuration information (S1320).
  • the DRX cycle may include on duration and sleep duration (or chance of DRX).
  • the UE may monitor the PDCCH in the PO of the determined PF (S1330). Here, for example, the UE monitors only one subframe (PO) per paging DRX cycle.
  • the UE receives a PDCCH scrambled by P-RNTI during on-duration (that is, when paging is detected), the UE transitions to the connection mode and can transmit and receive data with the base station.
  • an RRC_IDLE state when there is traffic directed to a terminal in an RRC_IDLE state (hereinafter referred to as an “idle state”), paging for the terminal occurs.
  • the UE may monitor the PDCCH by waking up periodically (ie, every (paging) DRX cycle). If there is no paging, the terminal transitions to the connected state, receives data, and if data does not exist, may enter the sleep mode again.
  • C-DRX connected mode DRX
  • C-DRX means DRX applied in an RRC connected state.
  • the DRX cycle of C-DRX may consist of a short DRX cycle and / or a long DRX cycle.
  • a short DRX cycle may be an option.
  • the UE may perform PDCCH monitoring for on duration. If the PDCCH is successfully detected during PDCCH monitoring, the UE may operate (or run) an inactive timer and maintain an awake state. Conversely, if the PDCCH is not successfully detected during the PDCCH monitoring, the terminal may enter a sleep state after the on duration is over.
  • a PDCCH reception opportunity (eg, a slot having a PDCCH search space) may be set discontinuously based on the C-DRX setting.
  • a PDCCH reception opportunity (eg, a slot having a PDCCH search space) may be continuously set in the present disclosure.
  • PDCCH monitoring may be limited to a time interval set as a measurement gap regardless of C-DRX setting.
  • 15 is a flowchart showing an example of a method for performing a C-DRX operation.
  • the UE may receive RRC signaling (eg, MAC-MainConfig IE) including DRX configuration information from the base station (S1510).
  • RRC signaling eg, MAC-MainConfig IE
  • S1510 DRX configuration information
  • the DRX configuration information may include the following information.
  • -onDurationTimer The number of PDCCH subframes that can be continuously monitored at the beginning of the DRX cycle
  • -drx-InactivityTimer The number of PDCCH subframes that can be continuously monitored when the UE decodes the PDCCH with scheduling information
  • -drx-RetransmissionTimer The number of PDCCH subframes to be continuously monitored when HARQ retransmission is expected
  • DRX 'ON' is set through a DRX command of a MAC CE (command element) (S1520)
  • the UE monitors the PDCCH for the ON duration of the DRX cycle based on the DRX setting (S1530).
  • the UE may execute a DRX inactive timer and an RRC inactive timer.
  • scheduling information eg, DL Grant
  • RRC_CONNECTED state hereinafter, referred to as a connection state
  • the DRX mode may be started.
  • the UE wakes up from the DRX cycle and can monitor the PDCCH for a predetermined time (on a duration timer).
  • the terminal when a short DRX is set, when the UE starts the DRX mode, the UE first starts with a short DRX cycle, and after the short DRX cycle ends, starts with a long DRX cycle.
  • the long DRX cycle may correspond to a multiple of the short DRX cycle.
  • the terminal may wake up more frequently. After the RRC inactive timer expires, the terminal may switch to the IDLE state and perform the IDLE mode DRX operation.
  • the battery life of the terminal is an important factor in the user experience affecting the adoption of 5G handsets and / or services.
  • the power efficiency for 5G NR terminals is not at least worse than LTE, and research of terminal power consumption is important in order to identify and apply technologies and designs for improvement.
  • ITU-R defines energy efficiency as one of the minimum technical performance requirements of the IMT-2020. According to the ITU-R report, the minimum requirements related to the technical performance of the IMT-2020 air interface, “The energy efficiency of the device can be related to support for two aspects: a) Efficient under load. Data transfer, b) low energy consumption when there is no data. Efficient data transmission in the load case is demonstrated with average spectral efficiency. In the absence of data, low energy consumption can be estimated by the slip ratio. ”
  • One efficient terminal power saving mechanism is to trigger a terminal for network access from a power efficiency mode. Unless there is information on network access through the terminal power saving framework, the terminal maintains a power efficiency mode such as a micro-slip or OFF period within a long DRX cycle. Instead, when there is no traffic to transmit, the network may support the terminal to switch from the network connection mode to the power saving mode (for example, dynamic terminal switching to sleep with a network support signal).
  • the terminal also consumes a lot of power for RRM measurement.
  • the terminal must turn on the power before the DRX ON period for tracking the channel in preparation for RRM measurement.
  • Some of the RRM measurements are not essential, but consume a lot of terminal power.
  • low mobility terminals do not need to measure as frequently as high mobility terminals.
  • the network may provide signaling to reduce power consumption for unnecessary RRM measurement by the terminal. Additional terminal support, for example terminal status information, is also useful for the network to enable terminal power consumption reduction for RRM measurement.
  • terminal power saving techniques include terminal adaptation to traffic and power consumption characteristics, adaptation to frequency changes, adaptation to time changes, adaptation to antennas, adaptation to DRX settings, and terminal processing capabilities.
  • Adaptation, adaptation to obtain PDCCH monitoring / decoding reduction, power saving signal / channel / procedure for triggering terminal power consumption adaptation, power consumption reduction in RRM measurement may be considered.
  • DL-SCH downlink shared channel
  • PCH paging channel
  • the terminal When the network requests, the terminal reports at least its own terminal wireless access capability.
  • the gNB may request the capability of the terminal to report based on band information. If allowed by the network, a temporary capability limitation request can be sent by the terminal to signal the limited availability of some capabilities (due to dPfmf, for example hardware sharing, interference or overheating) to the gNB. The gNB may then confirm or reject the request.
  • Temporary capability limits should be transparent to 5GC. That is, only static functions are stored in 5GC.
  • the UE monitors a set of PDCCH candidates in a monitoring occasion set in one or more set CORESETs according to a corresponding search space setting.
  • CORESET consists of a set of PRBs with a time interval of 1 to 3 OFDM symbols.
  • Resource units REG and CCE are defined in CORESET, and each CCE is composed of a set of REGs.
  • the control channel is formed of a set of CCEs. Different code rates for the control channel are implemented by aggregating different numbers of CCEs. Interleaved and non-interleaved CCE-REG mapping is supported in CORESET.
  • the following technique can be considered.
  • CA carrier aggregation
  • a cell activation / deactivation mechanism is supported.
  • the UE does not need to receive the corresponding PDCCH or PDSCH, cannot perform the corresponding uplink transmission, and does not need to perform CQI (channel quality indicator) measurement.
  • CQI channel quality indicator
  • the UE should receive PDCH and PDCCH (if the UE is set to monitor the PDCCH from these SCells) and is expected to be able to perform CQI measurement.
  • the NG-RAN prevents the activation of the SCell of the secondary PUCCH group (the group of SCells in which PUCCH signaling is associated with the PUCCH of the PUCCH SCell) while the PUCCH SCell (the secondary cell composed of PUCCH) is deactivated.
  • the NG-RAN causes the SCell mapped to the PUCCH SCell to be deactivated before the PUCCH SCell is changed or removed.
  • SCells added to the set of serving cells are initially deactivated, and SCells remaining in the set of serving cells (unchanged or reset) do not change the activation state (active or inactive). .
  • SCells are deactivated.
  • the receiving and transmitting bandwidth of the terminal need not be as wide as the bandwidth of the cell and can be adjusted: the width can be commanded to be changed (eg, period of low activity to save power) While contracting), the position in the frequency domain can be moved (eg, to increase scheduling flexibility), and the subcarrier spacing can be commanded to change (eg, to allow different services).
  • a subset of the total cell bandwidth of a cell is referred to as a bandwidth part (BWP), and BA is obtained by setting the BWP (s) to the terminal and notifying that the terminal is currently active among the set BWPs.
  • BA bandwidth part
  • BA is obtained by setting the BWP (s) to the terminal and notifying that the terminal is currently active among the set BWPs.
  • BA When BA is set, the UE only needs to monitor the PDCCH on one active BWP.
  • the BWP Inactive Timer (independent of the DRX Inactive Timer described above) is used to switch the active BWP to the default BWP: the timer restarts upon successful PDCCH decoding, and when the timer expires, switching to the default BWP occurs do.
  • BWP 1 , BWP 2 and BWP 3 are set on a time-frequency resource.
  • BWP 1 may have a width of 40 MHz and a subcarrier spacing of 15 kHz
  • BWP 2 may have a width of 10 MHz and a subcarrier spacing of 15 kHz
  • BWP 3 may have a width of 20 MHz and a subcarrier spacing of 60 kHz.
  • each of the bandwidth parts may have a different width and / or a different subcarrier spacing.
  • the RRM setup includes beam measurement information related to SSB (s) (for layer 3 mobility) and CSI-RS (s) for reported cell (s). can do.
  • the RRM setting may include a list of the best cells on each frequency where measurement information is available.
  • the RRM measurement information may include beam measurement for listed cells belonging to the target gNB.
  • the DRX operation is used to reduce power consumption of the terminal.
  • the terminal does not perform data transmission / reception in all DRX ON periods, and in the DRX ON period in which data transmission / reception is not performed, the UE wakes up unnecessarily to perform PDCCH monitoring.
  • a method of reducing power consumption of the terminal may be considered by informing the terminal to sleep again without waking up in a DRX ON period in which data transmission / reception is not expected. Accordingly, the present disclosure proposes various techniques for indicating whether to wake-up in the DRX ON period.
  • the content of the present disclosure proposes an operation in a DRX ON situation when the terminal performs a DRX operation. However, it can also be applied in a situation in which data is transmitted and received without performing DRX.
  • the UE may perform data transmission / reception by waking-up for a certain period of time expressed as 'On Duration' for each C-DRX cycle.
  • the UE performs PDCCH monitoring for each PDCCH monitoring occasion to transmit and receive data.
  • the DRX inactivity timer (drx-InactivityTimer) operates.
  • a section in which drx-InactivityTimer operates ie, a section in which the value of drx-InactivityTimer is greater than 0
  • a DRX inactivity time a section in which drx-InactivityTimer operates (ie, a section in which the value of drx-InactivityTimer is greater than 0) is referred to as a DRX inactivity time.
  • the terminal continues the DRX ON state during the DRX inactivity time interval, and when the DRX inactivity time interval ends, the terminal switches to a sleep state.
  • the on-duration period may be replaced with on-duration. This operation is illustrated in the first on-duration period of FIG. 18.
  • the UE does not receive the PDCCH during the on-duration period as in the second on-duration period of FIG. 18, the UE switches to the sleep state at the end of the on-duration period.
  • the UE may detect PDCCH by performing PDCCH monitoring in an on-duration period within the first C-DRX period shown in FIG. 18.
  • the DRX inactivity time may begin.
  • the DRX inactivity time may continue even after the on-duration period ends.
  • the terminal may switch to a sleep state.
  • the UE may perform a PDCCH monitoring by switching from a sleep state to a wake-up state in an on-duration period within a second C-DRX cycle shown in FIG. 18.
  • the UE may switch to a sleep state when the corresponding on-duration period is terminated.
  • the UE wakes up unnecessarily to perform PDCCH monitoring.
  • the proportion of on-duration that performs PDCCH monitoring without performing actual data transmission and reception is high, which causes power waste of the terminal. . It is necessary to reduce power waste caused by unnecessary PDCCH monitoring.
  • a wake-up signal may be considered in order to inform a user of a wake-up in the corresponding on-duration period before or in front of each on-duration period.
  • WUS wake-up signal
  • the UE wakes up in the corresponding on-duration period to perform PDCCH monitoring, and when the wake-up signal is not detected, the UE does not wake-up in the corresponding on-duration period It can keep the slip.
  • the UE wakes up in the corresponding on-duration period to perform PDCCH monitoring, and when the wake-up signal is detected, the UE does not wake-up in the corresponding on-duration period and sleeps. Can be maintained.
  • the terminal wakes up in the corresponding on-duration period to perform PDCCH monitoring, and the wake-up signal causes the terminal to sleep. If it is indicated, the terminal may maintain a sleep state without waking up in the corresponding on-duration period.
  • a section in which such a wake-up signal is transmitted or a section in which the terminal attempts to detect a wake-up signal is referred to as a wake-up signal opportunity or a WUS occasion.
  • 19 is for explaining an example of the C-DRX operation of the terminal associated with the wake-up signal.
  • the UE may not receive a wake-up signal instructing to wake-up in an on-duration period within the corresponding C-DRX period. . That is, the network may instruct the terminal to sleep without a wake-up signal by not transmitting a wake-up signal for a corresponding section. Therefore, in the on-duration period, the terminal may not wake-up because it has not detected a wake-up signal.
  • a new packet to be transmitted to the terminal may be generated while the terminal maintains a sleep state.
  • the terminal cannot receive the packet in the current on-duration period because it is in the sleep state in the on-duration period, and must wake up in the next on-duration period to receive the packet. This may cause a delay in data scheduling as described above.
  • the present disclosure proposes a method of performing reception of a wake-up signal multiple times within a DRX on-duration period. That is, as shown in FIG. 20, there may be a plurality of WUS opportunities, which are sections in which a wake-up signal can be transmitted in an on-duration period. These WUS opportunities may exist periodically within the on-duration period.
  • FIG. 20 schematically illustrates an example of a method of receiving a wake-up signal and an operation method based on a wake-up signal of a terminal according to some implementations of the present disclosure. Meanwhile, FIG. 20 illustrates a case where four WUS opportunities exist in one on-duration period, but this is only an example and various implementations are possible.
  • the terminal performs monitoring for the wake-up signal at each WUS opportunity, and wake-up if a wake-up signal is detected. A specific example of this will be described later.
  • the terminal attempts to receive the wake-up signal at a specific WUS opportunity.
  • the wake-up signal may inform the terminal to wake-up or sleep.
  • the terminal may determine that it is instructed to wake-up itself through a wake-up signal.
  • the network may transmit a wake-up signal, and if it wants to inform the terminal to sleep, it may not transmit a wake-up signal. In this case, when the terminal detects a wake-up signal, it can determine that it is instructed to wake-up itself.
  • the network wants to inform the terminal to wake-up, it does not transmit a wake-up signal, and if it wants to inform the terminal to sleep, it can transmit a wake-up signal. In this case, if the terminal does not detect the wake-up signal, it may determine that it is instructed to wake-up itself.
  • the network may send a wake-up signal to directly indicate whether the terminal wakes up or sleeps. For example, 1-bit information may be transmitted to inform that sleep is 0 and wake-up is 1. In this case, for example, if the terminal detects that the received wake-up signal instructs to wake-up, it can determine that it has been instructed to wake-up.
  • the terminal may determine that it has been instructed to sleep through a wake-up signal.
  • the network may transmit a wake-up signal, and if it wants to inform the terminal to sleep, it may not transmit a wake-up signal. In this case, the terminal may determine that it is instructed to sleep if it does not detect the wake-up signal.
  • the network wants to inform the terminal to wake-up, it does not transmit a wake-up signal, and if it wants to inform the terminal to sleep, it can transmit a wake-up signal.
  • the terminal may determine that it has been instructed to sleep when it detects a wake-up signal.
  • the network may send a wake-up signal to directly indicate whether the terminal wakes up or sleeps. For example, 1-bit information may be transmitted to inform that sleep is 0 and wake-up is 1. In this case, for example, if the terminal detects that the received wake-up signal has indicated that it has slipped, it can determine that it has been instructed to sleep.
  • the terminal wakes up by using a wake-up signal at a WUS opportunity that exists later. Suggest to inform.
  • the wake-up signal may be used even in a situation in which the DRX operation is not performed.
  • the terminal may periodically or aperiodically attempt to receive a wake-up signal to perform a power saving operation. That is, a WUS opportunity exists periodically, and a wake-up signal may be transmitted from the opportunity.
  • a wake-up signal does not enter a power saving mode because there is downlink data to be received by the terminal, and is it necessary to prepare to receive data (for example, to perform PDCCH monitoring) or The terminal may indicate whether there is no data to be received to perform a power saving operation (for example, PDCCH monitoring does not need to be performed).
  • the wake-up signal indicates that the terminal takes the power saving mode
  • this may mean all or part of the following.
  • the UE does not perform PDCCH monitoring.
  • the PDCCH monitoring period for the power saving mode may be set to RRC or the like to the UE.
  • PDSCH time-domain resource assignment for power saving mode may be set to RRC or the like to the UE.
  • the UE assumes that the associated PDSCH is not transmitted before decoding of the PDCCH is finished.
  • the wake-up signal indicates that the terminal does not take the power saving mode
  • this may mean all or part of the following.
  • the UE performs PDCCH monitoring.
  • the UE assumes that the associated PDSCH may be transmitted before decoding of the PDCCH is finished.
  • the terminal When the on-duration period starts, the terminal attempts to receive a wake-up signal at a future WUS opportunity.
  • State 1 is a state in which the wake-up signal monitoring is performed in the WUS opportunity period, and the terminal performs sleep or micro-sleep in the non-WUS opportunity period.
  • state 2 is a state in which the terminal wakes up to monitor the PDCCH without monitoring the wake-up signal and performs data transmission and reception.
  • the operation of the terminal associated with state 1 or state 1 may be defined as follows.
  • the UE performs sleep or micro-slip.
  • the terminal attempts to receive a wake-up signal.
  • the terminal may not perform reception of PDCCH monitoring until the next WUS opportunity. That is, the terminal may perform sleep or micro-slip until the next WUS opportunity. Alternatively, state 1 can be maintained.
  • the terminal may switch to state 2.
  • the operation of drx-InactivityTimer may be started. That is, DRX inactivity time may start.
  • the UE performs PDCCH monitoring.
  • the UE may maintain state 2.
  • the value of drx-InactivityTimer may be reset.
  • the terminal may perform an operation (eg, downlink data reception) indicated by the PDCCH.
  • the terminal may maintain state 2.
  • the terminal does not attempt to receive the wake-up signal. That is, it is assumed that the WUS opportunity does not exist.
  • FIG. 21 schematically illustrates another example of a method of receiving a wake-up signal and an operation method based on a wake-up signal of a terminal according to some implementations of the present disclosure.
  • the terminal performs monitoring of the wake-up signal in every WUS opportunity period during the on-duration period, but is not instructed to wake-up until the on-duration period ends. It can be switched to sleep state or DRX OFF state.
  • the terminal may switch to the sleep state.
  • FIG. 22 schematically illustrates another example of a method of receiving a wake-up signal and an operation method based on a wake-up signal of a terminal according to some implementations of the present disclosure.
  • the terminal may not sleep-up at the first WUS opportunity in the on-duration period and may sleep until the next WUS opportunity period. Thereafter, the next WUS opportunity may be instructed to wake-up by detecting the wake-up signal.
  • the DRX inactivity time starts, and the UE wakes up to perform PDCCH monitoring in the PDCCH monitoring opportunity section. After this, the UE has not actually received the PDCCH, but the DRX inactivity time has ended and may be switched to the sleep state or to the DRX OFF state.
  • the terminal may not detect the wake-up signal at the first WUS opportunity. That is, the network may not transmit a wake-up signal corresponding to the first WUS opportunity. Since the terminal has not detected the wake-up signal, it can switch to the sleep state.
  • the network may transmit a wake-up signal corresponding to the second WUS opportunity. That is, the terminal can detect the signal by monitoring the wake-up signal at the second WUS opportunity. Then, the DRX inactivity time may begin. The terminal may receive the packet within the DRX inactivity time interval. Therefore, the delay of data scheduling can be reduced.
  • the wake-up signal may be used to operate as follows.
  • the terminal When the terminal accesses the cell, or establishes a connection with the cell, and receives a setting for the WUS opportunity, the terminal enters state 2 or state 1.
  • the operation of the terminal associated with state 1 or state 1 may be defined as follows.
  • the UE performs sleep or micro-slip.
  • the terminal attempts to receive a wake-up signal.
  • the terminal may not perform reception of PDCCH monitoring until the next WUS opportunity. That is, the terminal may perform sleep or micro-slip until the next WUS opportunity. Alternatively, the terminal may maintain state 1.
  • the terminal may switch to state 2.
  • the operation of the UE-ActivationTimer may be started. That is, a period in which the terminal is activated out of power saving mode or state 1 may be activated.
  • the operation of the terminal associated with state 2 or state 2 may be defined as follows.
  • the UE performs PDCCH monitoring.
  • the UE may maintain state 2.
  • the value of the UE-ActivationTimer may be reset.
  • the terminal may perform an operation (eg, downlink data reception) indicated by the PDCCH.
  • the terminal may maintain state 2.
  • the terminal does not attempt to receive the wake-up signal. That is, it is assumed that the WUS opportunity does not exist.
  • the network may inform that the UE does not need to perform PDCCH monitoring by waking up or performing PDCCH monitoring by slipping through a wake-up signal in a WUS opportunity period existing in an on-duration period.
  • the network may instruct the terminal whether to perform a power saving operation of the terminal through a wake-up signal in a WUS signal period.
  • the network may inform the user of the wake-up of the terminal in a subsequent WUS opportunity.
  • the network When the terminal is in state 1, when the terminal needs to wake-up and perform PDCCH monitoring at the WUS opportunity, that is, for example, when a packet to be received by the terminal exists, the network sends a wake-up signal at the WUS opportunity. It can be used to indicate that the terminal should wake-up.
  • the network sends a wake-up signal at the WUS opportunity. It can be used to indicate that the terminal can sleep.
  • the network does not need to inform the terminal whether it wakes up from the WUS opportunity.
  • the network may perform transmission and data transmission and reception of the PDCCH with the terminal.
  • the network may set the WUS opportunity period existing in the on-duration period to the terminal. Specifically, this setting may be performed as follows.
  • the period and offset values of the WUS opportunity may be indicated to the UE through the RRC signal.
  • a period and an offset value of a WUS opportunity may be indicated to the UE through an RRC signal.
  • the network instructs the terminal to wake-up and transmits the packet to the terminal. Therefore, data transmission may not be delayed until the next on-duration period starts, thereby reducing latency.
  • the network does not transmit wake-up signals to all terminals that need to transmit data. May not. However, if a plurality of WUS opportunities exist, the wake-up signal can be distributed and transmitted to alleviate this problem.
  • the terminal wakes up by using a wake-up signal at a WUS opportunity that exists later. Suggest what to do.
  • the terminal When the on-duration period starts, the terminal attempts to receive a wake-up signal at a future WUS opportunity.
  • State 1 is a state in which a WUS monitoring is performed in a WUS opportunity section, and a terminal performs a sleep or micro-slip in a section that is not a WUS opportunity.
  • State 2 is a state in which the UE wakes up to monitor the PDCCH without monitoring the wake-up signal, but has not received any PDCCH.
  • state 3 is a state in which the terminal continuously monitors the PDCCH and performs data transmission and reception after receiving the PDCCH.
  • the operation of the terminal associated with state 1 or state 1 may be defined as follows.
  • the UE performs sleep or micro-slip.
  • the terminal attempts to receive a wake-up signal.
  • the terminal may not perform reception of PDCCH monitoring until the next WUS opportunity. That is, the terminal may perform sleep or micro-slip until the next WUS opportunity. Alternatively, state 1 can be maintained.
  • the terminal may switch to state 2.
  • the operation of the terminal associated with state 2 or state 2 may be defined as follows.
  • the UE performs PDCCH monitoring.
  • the UE may maintain state 2.
  • the UE may perform an operation indicated by the PDCCH (eg, receiving downlink data).
  • the terminal may switch to state 3.
  • the operation of drx-InactivityTimer can be started. That is, the DRX inactivity time may begin.
  • the terminal does not attempt to receive the wake-up signal. That is, it is assumed that the WUS opportunity does not exist.
  • the operation of the terminal associated with state 3 or state 3 may be defined as follows.
  • the UE performs PDCCH monitoring.
  • the UE maintains state 3.
  • the UE when the UE detects the PDCCH in the PDCCH monitoring opportunity period, the value of drx-InactivityTimer may be reset. Alternatively, the UE may perform an operation indicated by the PDCCH (eg, receiving downlink data). Alternatively, the terminal may maintain state 3.
  • the terminal does not attempt to receive the wake-up signal. That is, it is assumed that the WUS opportunity does not exist.
  • FIG. 23 schematically illustrates another example of a method of receiving a wake-up signal and an operation method based on a wake-up signal of a terminal according to some implementations of the present disclosure.
  • the terminal may not sleep-up at the first WUS opportunity in the on-duration period, and may sleep to the next WUS opportunity period. Thereafter, the next WUS opportunity may be instructed to wake-up by detecting the wake-up signal. Thereafter, the terminal can wake-up to perform monitoring of the PDCCH at the PDCCH monitoring opportunity. However, if the PDCCH is not received until the end of the on-duration period, it may be switched to the sleep state or the DRX OFF state.
  • the terminal may sleep until the second WUS opportunity point. Thereafter, when a wake-up signal is received at the second WUS opportunity, the terminal may wake-up to perform PDCCH monitoring.
  • the time period during which the UE performs the PDCCH monitoring may be from the second WUS opportunity time to the end of the on-duration interval.
  • the UE may not perform the detection of the wake-up signal.
  • FIG. 24 schematically illustrates another example of a method of receiving a wake-up signal and an operation method based on a wake-up signal of a terminal according to some implementations of the present disclosure.
  • the UE may not sleep-up at the first WUS opportunity in the on-duration period and may sleep until the next WUS opportunity period. Thereafter, the next WUS opportunity may be instructed to wake-up by detecting the wake-up signal. Accordingly, the UE can wake-up to perform monitoring of the PDCCH at the PDCCH monitoring opportunity. Thereafter, the UE may succeed in detecting the PDCCH before the on-duration period ends. In this case, the DRX inactivity time starts, the operation indicated by the PDCCH is performed, and the PDCCH monitoring is performed in the PDCCH monitoring opportunity section. Thereafter, the terminal may switch to the sleep state or the DRX OFF state after the DRX inactivity time has ended.
  • the wake-up signal may be used to operate as follows.
  • the terminal When the terminal accesses the cell, or establishes a connection with the cell, and receives a setting for the WUS opportunity, the terminal enters state 2 or state 1.
  • the operation of the terminal associated with state 1 or state 1 may be defined as follows.
  • the UE performs sleep or micro-slip.
  • the terminal attempts to receive a wake-up signal.
  • the terminal may not perform reception of PDCCH monitoring until the next WUS opportunity. That is, the terminal may perform sleep or micro-slip until the next WUS opportunity. Alternatively, the terminal may maintain state 1.
  • the terminal may switch to state 2.
  • the operation of UE-ActivationTimer1 may be started. That is, a period in which the terminal is activated out of power saving mode or state 1 may be activated.
  • the operation of the terminal associated with state 2 or state 2 may be defined as follows.
  • the UE performs PDCCH monitoring.
  • the UE may maintain state 2.
  • the UE may perform an operation indicated by the PDCCH (eg, receiving downlink data).
  • the terminal may switch to state 3.
  • the operation of UE-ActivationTimer2 may be started.
  • UE-ActivationTimer2 may be set by RRC or the like separately from the UE-ActivationTimer1 value, and may additionally have a larger value than UE-ActivationTimer1. That is, an activation section of a terminal having a longer length may be started.
  • the terminal does not attempt to receive the wake-up signal. That is, it is assumed that the WUS opportunity does not exist.
  • the operation of the terminal associated with state 3 or state 3 may be defined as follows.
  • the UE performs PDCCH monitoring.
  • the UE maintains state 3.
  • the value of drx-InactivityTimer2 may be reset.
  • the terminal may perform an operation (eg, downlink data reception) indicated by the PDCCH.
  • the terminal may maintain state 3.
  • the terminal does not attempt to receive the wake-up signal. That is, it is assumed that the WUS opportunity does not exist.
  • the network may inform that the UE does not need to perform PDCCH monitoring by waking up or performing PDCCH monitoring by slipping through a wake-up signal in a WUS opportunity period existing in an on-duration period.
  • the network may instruct the terminal whether to perform a power saving operation of the terminal through a wake-up signal in a WUS opportunity period.
  • the network may inform the user of the wake-up of the terminal in a subsequent WUS opportunity.
  • the network uses the wake-up signal at the WUS opportunity By doing so, it may indicate that the terminal should wake-up.
  • the network uses a wake-up signal at the WUS opportunity To indicate that the terminal can sleep.
  • the network does not need to inform the terminal whether to wake-up at the WUS opportunity.
  • the network may perform transmission and data transmission and reception of the PDCCH with the terminal.
  • the network instructs the terminal to wake-up and transmits the packet to the terminal. Therefore, data transmission may not be delayed until the next on-duration period starts, thereby reducing latency.
  • the network does not transmit wake-up signals to all terminals that need to transmit data. May not. However, if there are multiple WUS opportunities, the wake-up signal can be distributed and transmitted, thereby alleviating this problem.
  • the terminal wakes up by using a wake-up signal at a WUS opportunity that exists later Suggest to inform.
  • the terminal When the on-duration period starts, the terminal attempts to receive a wake-up signal at a future WUS opportunity.
  • State 1 is a state in which the wake-up signal monitoring is performed in the WUS opportunity section, and the terminal performs a sleep or micro-slip in the non-WUS opportunity section.
  • State 2 is a state in which the UE wakes up to monitor the PDCCH without monitoring the wake-up signal, but has not received any PDCCH.
  • state 3 is a state in which the terminal continuously monitors the PDCCH and performs data transmission and reception after receiving the PDCCH.
  • the operation of the terminal associated with state 1 or state 1 may be defined as follows.
  • the UE performs sleep or micro-slip.
  • the terminal attempts to receive a wake-up signal.
  • the terminal may not perform reception of PDCCH monitoring until the next WUS opportunity. That is, the terminal may perform sleep or micro-slip until the next WUS opportunity. Or, the terminal maintains state 1.
  • the terminal Conversely, if the terminal is instructed to wake-up through a wake-up signal at the WUS opportunity, the terminal switches to state 2.
  • the operation of the terminal associated with state 2 or state 2 may be defined as follows.
  • the UE performs PDCCH monitoring.
  • the UE maintains state 2.
  • the UE may perform an operation indicated by the PDCCH (eg, receiving downlink data). Alternatively, the terminal may switch to state 3. Alternatively, the operation of drx-InactivityTimer may be started. That is, the DRX inactivity time may begin.
  • the terminal attempts to receive the wake-up signal.
  • the terminal may not perform reception of PDCCH monitoring until the next WUS opportunity. That is, the terminal may perform sleep or micro-slip until the next WUS opportunity. Or, the terminal switches to state 1.
  • the terminal when the terminal is instructed to wake-up through a wake-up signal at a WUS opportunity, the terminal maintains state 2.
  • the operation of the terminal associated with state 3 or state 3 may be defined as follows.
  • the UE performs PDCCH monitoring.
  • the UE maintains state 3.
  • the UE when the UE detects the PDCCH in the PDCCH monitoring opportunity period, the value of drx-InactivityTimer may be reset. In addition, the UE may perform an operation (eg, downlink data reception) indicated by the PDCCH. In addition, the terminal maintains state 3.
  • the terminal does not attempt to receive the wake-up signal. That is, it is assumed that the WUS opportunity does not exist.
  • FIG. 25 schematically illustrates another example of a method of receiving a wake-up signal and an operation method based on a wake-up signal of a terminal according to some implementations of the present disclosure.
  • the terminal may not sleep-up at the first WUS opportunity in the on-duration period, and may sleep to the next WUS opportunity period. Then, at the next WUS opportunity, the wake-up signal may be instructed to wake-up. Accordingly, the UE can wake-up to perform monitoring of the PDCCH at the PDCCH monitoring opportunity. However, without receiving the PDCCH, it becomes the next WUS opportunity section, and the UE sleeps until the next WUS opportunity section because the UE is not instructed to wake-up at the corresponding WUS opportunity. At the last WUS opportunity, the terminal does not receive a wake-up, so the terminal sleeps again. Thereafter, the on-duration period is terminated, and thus, it can be switched to the sleep state or the DRX OFF state.
  • the terminal when a plurality of WUS opportunities are set in one on-duration period, when the terminal detects a wake-up signal only in a specific WUS opportunity, the terminal starts from the specific WUS opportunity. PDCCH monitoring can be performed up to the next WUS opportunity.
  • the terminal may perform PDCCH monitoring from the specific WUS opportunity to the end time of the on-duration period.
  • 26 schematically illustrates another example of a method of receiving a wake-up signal and an operation method based on a wake-up signal of a terminal according to some implementations of the present disclosure.
  • the terminal may not sleep-up at the first WUS opportunity in the on-duration period and may sleep until the next WUS opportunity period. Then, at the next WUS opportunity, the wake-up signal may be instructed to wake-up. Therefore, the UE can wake-up to perform monitoring of the PDCCH at the PDCCH monitoring opportunity. However, without receiving the PDCCH, it becomes the next WUS opportunity section, and the corresponding WUS opportunity may also be instructed to wake-up through detection of a wake-up signal. However, without receiving the PDCCH, it becomes the next WUS opportunity section again, and the UE sleeps because the UE is not instructed to wake-up at the corresponding WUS opportunity. Thereafter, the on-duration period is terminated, and thus, it can be switched to the sleep state or the DRX OFF state.
  • FIG. 27 schematically illustrates another example of a method for receiving a wake-up signal of a terminal and an operation method based on a wake-up signal, according to some implementations of the present disclosure.
  • the UE may not sleep-up at the first WUS opportunity in the on-duration period, and may sleep until the next WUS opportunity period. Then, at the next WUS opportunity, the wake-up signal may be instructed to wake-up. Therefore, the UE can wake-up to perform monitoring of the PDCCH at the PDCCH monitoring opportunity. However, without receiving the PDCCH, it becomes the next WUS opportunity section, and the corresponding WUS opportunity may also be instructed to wake-up through detection of a wake-up signal. Thereafter, the UE may succeed in detecting the PDCCH before the next WUS opportunity.
  • the DRX inactivity time starts, the operation indicated by the PDCCH is performed, and the PDCCH monitoring is performed in the PDCCH monitoring opportunity section. Thereafter, the terminal may switch to the sleep state or the DRX OFF state after the DRX inactivity time has ended.
  • the wake-up signal may be used to operate as follows.
  • the terminal When the terminal accesses the cell, or establishes a connection with the cell, and receives a setting for the WUS opportunity, the terminal enters state 2 or state 1.
  • the operation of the terminal associated with state 1 or state 1 may be defined as follows.
  • the UE performs sleep or micro-slip.
  • the terminal attempts to receive a wake-up signal.
  • the terminal may not perform reception of PDCCH monitoring until the next WUS opportunity. That is, the terminal may perform sleep or micro-slip until the next WUS opportunity. Or, the terminal maintains state 1.
  • the terminal Conversely, if the terminal is instructed to wake-up through a wake-up signal at the WUS opportunity, the terminal switches to state 2.
  • the operation of the terminal associated with state 2 or state 2 may be defined as follows.
  • the UE performs PDCCH monitoring.
  • the UE maintains state 2.
  • the UE may perform an operation indicated by the PDCCH (eg, receiving downlink data). Also, the terminal may switch to state 3. In addition, the operation of the UE-ActivationTimer can be started.
  • the terminal attempts to receive a wake-up signal.
  • the terminal may not perform reception of PDCCH monitoring until the next WUS opportunity. That is, the terminal may perform sleep or micro-slip until the next WUS opportunity. Also, the terminal may switch to state 1.
  • the terminal may maintain state 2.
  • the operation of the terminal associated with state 3 or state 3 may be defined as follows.
  • the UE performs PDCCH monitoring.
  • the UE may maintain state 3.
  • the UE when the UE detects the PDCCH in the PDCCH monitoring opportunity period, the value of drx-InactivityTimer may be reset. In addition, the UE may perform an operation indicated by the PDCCH (eg, receive downlink data). In addition, the terminal may maintain state 3.
  • the terminal does not attempt to receive the wake-up signal. That is, it is assumed that the WUS opportunity does not exist.
  • the network may inform that the UE does not need to perform PDCCH monitoring by wake-up in the WUS opportunity period existing in the on-duration period or perform PDCCH monitoring by slipping. Alternatively, even when the terminal does not use DRX, the network may instruct the terminal whether to perform a power saving operation of the terminal through a wake-up signal in a WUS opportunity period.
  • the network may inform the user of the wake-up of the terminal in a subsequent WUS opportunity.
  • the network uses the wake-up signal at the WUS opportunity By doing so, it may indicate that the terminal should wake-up.
  • the network uses the wake-up signal at the WUS opportunity To indicate that the terminal can sleep.
  • the network uses the wake-up signal at the WUS opportunity By doing so, it may indicate that the terminal should wake-up.
  • the network uses the wake-up signal at the WUS opportunity To indicate that the terminal can sleep.
  • the network may perform transmission and data transmission and reception of the PDCCH with the terminal.
  • the network does not need to inform the terminal whether it wakes up from the WUS opportunity.
  • the network may perform transmission and data transmission and reception of the PDCCH with the terminal.
  • a plurality of WUS opportunities may exist in the on-duration period or the DRX ON period. Accordingly, when the UE detects a wake-up signal at a WUS opportunity not only before the on-duration period but also on the on-duration period in the time domain, the UE may wake-up to perform PDCCH monitoring. Therefore, as described above, even if a packet or data to be transmitted to the terminal occurs on the on-duration period, the terminal detects the wake-up signal before the end of the on-duration period where the packet or data occurs, thereby monitoring the PDCCH. It can perform and receive the packet or data. As a result, data reception delay can be reduced according to the above-described embodiments.
  • the network wakes up to the third WUS opportunity.
  • -Up signal may be transmitted to the terminal.
  • the UE can detect the wake-up signal at the third WUS opportunity, and then perform PDCCH monitoring.
  • a PDCCH is detected, a DRX inactivity time is started, and the terminal can receive the packet or data in the DRX inactivity time interval.
  • FIG. 28 is a flowchart for an example of a method of performing a PDCCH monitoring operation performed by a terminal according to some implementations of the present disclosure.
  • the terminal detects a wake-up signal for each of a plurality of wake-up signal opportunities in the on-duration period (S2810).
  • the on-duration period may be a time period set for performing the PDCCH monitoring.
  • the UE performs PDCCH monitoring (S2820).
  • the terminal receives the specific wake-up signal opportunity from the specific wake-up signal opportunity in a time domain.
  • a sleep operation may be performed to a close point of a next wake-up signal opportunity or a time point when the on-duration period ends.
  • the terminal if the terminal does not detect the wake-up signal from the N-th wake-up signal opportunity among a plurality of wake-up signal opportunities in the on-duration period, the terminal is the N-th wake-up signal opportunity period
  • the sleep operation may be performed during a time period from the N + 1th wake-up signal opportunity period.
  • the terminal ends the on-duration period from the N-th wake-up signal opportunity period
  • the sleep operation can be performed up to the point in time.
  • 29 illustrates a communication system 1 applied to the present disclosure.
  • the communication system 1 applied to the present disclosure includes a wireless device, a base station and a network.
  • the wireless device means a device that performs communication using a wireless access technology (eg, 5G NR (New RAT), Long Term Evolution (LTE)), and may be referred to as a communication / wireless / 5G device.
  • a wireless access technology eg, 5G NR (New RAT), Long Term Evolution (LTE)
  • LTE Long Term Evolution
  • the wireless device includes a robot 100a, a vehicle 100b-1, 100b-2, an XR (eXtended Reality) device 100c, a hand-held device 100d, and a home appliance 100e. ), Internet of Thing (IoT) devices 100f, and AI devices / servers 400.
  • IoT Internet of Thing
  • the vehicle may include a vehicle equipped with a wireless communication function, an autonomous driving vehicle, a vehicle capable of performing inter-vehicle communication, and the like.
  • the vehicle may include a UAV (Unmanned Aerial Vehicle) (eg, a drone).
  • XR devices include Augmented Reality (AR) / Virtual Reality (VR) / Mixed Reality (MR) devices, Head-Mounted Device (HMD), Head-Up Display (HUD) provided in vehicles, televisions, smartphones, It may be implemented in the form of a computer, wearable device, home appliance, digital signage, vehicle, robot, or the like.
  • the mobile device may include a smart phone, a smart pad, a wearable device (eg, a smart watch, smart glasses), a computer (eg, a notebook, etc.).
  • Household appliances may include a TV, a refrigerator, and a washing machine.
  • IoT devices may include sensors, smart meters, and the like.
  • the base station and the network may also be implemented as wireless devices, and the specific wireless device 200a may operate as a base station / network node to other wireless devices.
  • the wireless devices 100a to 100f may be connected to the network 300 through the base station 200.
  • AI Artificial Intelligence
  • the network 300 may be configured using a 3G network, a 4G (eg, LTE) network, or a 5G (eg, NR) network.
  • the wireless devices 100a to 100f may communicate with each other through the base station 200 / network 300, but may directly communicate (e.g. sidelink communication) without going through the base station / network.
  • the vehicles 100b-1 and 100b-2 may communicate directly (e.g. Vehicle to Vehicle (V2V) / Vehicle to everything (V2X) communication).
  • the IoT device eg, sensor
  • the IoT device may directly communicate with other IoT devices (eg, sensor) or other wireless devices 100a to 100f.
  • Wireless communication / connections 150a, 150b, and 150c may be achieved between the wireless devices 100a to 100f / base station 200 and the base station 200 / base station 200.
  • the wireless communication / connection is various wireless access such as uplink / downlink communication 150a and sidelink communication 150b (or D2D communication), base station communication 150c (eg relay, IAB (Integrated Access Backhaul)). It can be achieved through technology (eg, 5G NR).
  • wireless communication / connections 150a, 150b, 150c wireless devices and base stations / wireless devices, base stations and base stations can transmit / receive radio signals to each other.
  • wireless communication / connections 150a, 150b, 150c may transmit / receive signals over various physical channels.
  • various signal processing processes eg, channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.
  • resource allocation processes e.g., resource allocation processes, and the like.
  • NR supports a number of numerology (or subcarrier spacing (SCS)) to support various 5G services.
  • numerology or subcarrier spacing (SCS)
  • SCS subcarrier spacing
  • the SCS when the SCS is 15 kHz, it supports a wide area in traditional cellular bands, and when the SCS is 30 kHz / 60 kHz, it is dense-urban, lower latency. And a wider carrier bandwidth, and when the SCS is 60 kHz or higher, a bandwidth greater than 24.25 GHz is supported to overcome phase noise.
  • the NR frequency band may be defined as a frequency range of two types (FR1, FR2).
  • the numerical value of the frequency range may be changed, and for example, the frequency ranges of the two types (FR1, FR2) may be as shown in Table 4 below.
  • FR1 of the frequency range used in the NR system may mean “sub 6 GHz range”
  • FR2 may mean “above 6 GHz range” and may be referred to as millimeter wave (mmW). .
  • FR1 may include a band of 410MHz to 7125MHz as shown in Table 5 below. That is, FR1 may include a frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or higher. For example, a frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or more included in FR1 may include an unlicensed band. The unlicensed band may be used for various purposes, for example, for communication for vehicles (eg, autonomous driving).
  • FIG. 30 illustrates a wireless device that can be applied to the present disclosure.
  • the first wireless device 100 and the second wireless device 200 may transmit and receive wireless signals through various wireless access technologies (eg, LTE and NR).
  • ⁇ the first wireless device 100, the second wireless device 200 ⁇ is ⁇ wireless device 100x, base station 200 ⁇ and / or ⁇ wireless device 100x), wireless device 100x in FIG. ⁇ .
  • the first wireless device 100 includes one or more processors 102 and one or more memories 104, and may further include one or more transceivers 106 and / or one or more antennas 108.
  • the processor 102 controls the memory 104 and / or transceiver 106 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein.
  • the processor 102 may process information in the memory 104 to generate the first information / signal, and then transmit the wireless signal including the first information / signal through the transceiver 106.
  • the processor 102 may receive the wireless signal including the second information / signal through the transceiver 106 and store the information obtained from the signal processing of the second information / signal in the memory 104.
  • the memory 104 may be connected to the processor 102 and may store various information related to the operation of the processor 102.
  • the memory 104 is an instruction to perform some or all of the processes controlled by the processor 102, or to perform the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein. You can store software code that includes
  • the processor 102 and the memory 104 may be part of a communication modem / circuit / chip designed to implement wireless communication technology (eg, LTE, NR).
  • the transceiver 106 can be coupled to the processor 102 and can transmit and / or receive wireless signals through one or more antennas 108.
  • the transceiver 106 may include a transmitter and / or receiver.
  • the transceiver 106 may be mixed with a radio frequency (RF) unit.
  • the wireless device may mean a communication modem / circuit / chip.
  • the second wireless device 200 includes one or more processors 202, one or more memories 204, and may further include one or more transceivers 206 and / or one or more antennas 208.
  • the processor 202 controls the memory 204 and / or transceiver 206 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein.
  • the processor 202 may process information in the memory 204 to generate third information / signal, and then transmit a wireless signal including the third information / signal through the transceiver 206.
  • the processor 202 may receive the wireless signal including the fourth information / signal through the transceiver 206 and store the information obtained from the signal processing of the fourth information / signal in the memory 204.
  • the memory 204 may be connected to the processor 202, and may store various information related to the operation of the processor 202.
  • the memory 204 is an instruction to perform some or all of the processes controlled by the processor 202, or to perform the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein. You can store software code that includes
  • the processor 202 and the memory 204 may be part of a communication modem / circuit / chip designed to implement wireless communication technology (eg, LTE, NR).
  • the transceiver 206 can be coupled to the processor 202 and can transmit and / or receive wireless signals through one or more antennas 208.
  • Transceiver 206 may include a transmitter and / or receiver.
  • Transceiver 206 may be mixed with an RF unit.
  • the wireless device may mean a communication modem / circuit / chip.
  • one or more protocol layers may be implemented by one or more processors 102 and 202.
  • one or more processors 102, 202 may implement one or more layers (eg, functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP).
  • the one or more processors 102 and 202 may include one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein. Can be created.
  • PDUs Protocol Data Units
  • SDUs Service Data Units
  • the one or more processors 102, 202 may generate messages, control information, data or information according to the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein.
  • the one or more processors 102, 202 generate signals (eg, baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, suggestions and / or methods disclosed herein. , To one or more transceivers 106, 206.
  • One or more processors 102, 202 may receive signals (eg, baseband signals) from one or more transceivers 106, 206, and descriptions, functions, procedures, suggestions, methods and / or operational flow diagrams disclosed herein Depending on the field, PDU, SDU, message, control information, data or information may be acquired.
  • signals eg, baseband signals
  • One or more processors 102, 202 may be referred to as a controller, microcontroller, microprocessor, or microcomputer.
  • the one or more processors 102, 202 can be implemented by hardware, firmware, software, or a combination thereof.
  • ASICs Application Specific Integrated Circuits
  • DSPs Digital Signal Processors
  • DSPDs Digital Signal Processing Devices
  • PLDs Programmable Logic Devices
  • FPGAs Field Programmable Gate Arrays
  • Descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in this document may be implemented using firmware or software, and firmware or software may be implemented to include modules, procedures, functions, and the like.
  • the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein are either firmware or software set to perform or are stored in one or more processors 102, 202 or stored in one or more memories 104, 204. It can be driven by the above processors (102, 202).
  • the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein can be implemented using firmware or software in the form of code, instructions and / or instructions.
  • the one or more memories 104, 204 may be coupled to one or more processors 102, 202, and may store various types of data, signals, messages, information, programs, codes, instructions, and / or instructions.
  • the one or more memories 104, 204 may be comprised of ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer readable storage media, and / or combinations thereof.
  • the one or more memories 104, 204 may be located inside and / or outside of the one or more processors 102, 202. Also, the one or more memories 104 and 204 may be connected to the one or more processors 102 and 202 through various technologies such as a wired or wireless connection.
  • the one or more transceivers 106 and 206 may transmit user data, control information, radio signals / channels, and the like referred to in the methods and / or operational flowcharts of this document to one or more other devices.
  • the one or more transceivers 106, 206 may receive user data, control information, radio signals / channels, and the like referred to in the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein from one or more other devices. have.
  • one or more transceivers 106, 206 may be connected to one or more processors 102, 202, and may transmit and receive wireless signals.
  • one or more processors 102, 202 may control one or more transceivers 106, 206 to transmit user data, control information, or wireless signals to one or more other devices.
  • one or more processors 102, 202 may control one or more transceivers 106, 206 to receive user data, control information, or wireless signals from one or more other devices.
  • one or more transceivers 106, 206 may be coupled to one or more antennas 108, 208, and one or more transceivers 106, 206 may be described, functions described herein through one or more antennas 108, 208.
  • the one or more antennas may be a plurality of physical antennas or a plurality of logical antennas (eg, antenna ports).
  • the one or more transceivers 106 and 206 use the received radio signal / channel and the like in the RF band signal to process the received user data, control information, radio signal / channel, and the like using one or more processors 102 and 202. It can be converted to a baseband signal.
  • the one or more transceivers 106 and 206 may convert user data, control information, and radio signals / channels processed using one or more processors 102 and 202 from a baseband signal to an RF band signal.
  • the one or more transceivers 106, 206 may include (analog) oscillators and / or filters.
  • 31 illustrates a signal processing circuit for a transmission signal.
  • the signal processing circuit 1000 may include a scrambler 1010, a modulator 1020, a layer mapper 1030, a precoder 1040, a resource mapper 1050, and a signal generator 1060.
  • the operations / functions of FIG. 31 may be performed in processors 102, 202 and / or transceivers 106, 206 of FIG.
  • the hardware elements of FIG. 31 can be implemented in the processors 102, 202 and / or transceivers 106, 206 of FIG. 30.
  • blocks 1010 to 1060 may be implemented in processors 102 and 202 of FIG. 30.
  • blocks 1010 to 1050 may be implemented in the processors 102 and 202 of FIG. 30, and block 1060 may be implemented in the transceivers 106 and 206 of FIG. 30.
  • the codeword may be converted into a wireless signal through the signal processing circuit 1000 of FIG. 31.
  • the codeword is an encoded bit sequence of an information block.
  • the information block may include a transport block (eg, UL-SCH transport block, DL-SCH transport block).
  • the wireless signal may be transmitted through various physical channels (eg, PUSCH, PDSCH).
  • the codeword may be converted into a scrambled bit sequence by the scrambler 1010.
  • the scramble sequence used for scramble is generated based on the initialization value, and the initialization value may include ID information of a wireless device.
  • the scrambled bit sequence may be modulated by a modulator 1020 into a modulation symbol sequence.
  • the modulation scheme may include pi / 2-Binary Phase Shift Keying (pi / 2-BPSK), m-Phase Shift Keying (m-PSK), m-Quadrature Amplitude Modulation (m-QAM), and the like.
  • the complex modulation symbol sequence may be mapped to one or more transport layers by the layer mapper 1030.
  • the modulation symbols of each transport layer may be mapped to the corresponding antenna port (s) by the precoder 1040 (precoding).
  • the output z of the precoder 1040 can be obtained by multiplying the output y of the layer mapper 1030 by the precoding matrix W of N * M.
  • N is the number of antenna ports and M is the number of transport layers.
  • the precoder 1040 may perform precoding after performing transform precoding (eg, DFT transformation) on complex modulation symbols.
  • the precoder 1040 may perform precoding without performing transform precoding.
  • the resource mapper 1050 may map modulation symbols of each antenna port to time-frequency resources.
  • the time-frequency resource may include a plurality of symbols (eg, CP-OFDMA symbol, DFT-s-OFDMA symbol) in the time domain and a plurality of subcarriers in the frequency domain.
  • the signal generator 1060 generates a radio signal from the mapped modulation symbols, and the generated radio signal can be transmitted to other devices through each antenna.
  • the signal generator 1060 may include an Inverse Fast Fourier Transform (IFFT) module and a Cyclic Prefix (CP) inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc. .
  • IFFT Inverse Fast Fourier Transform
  • CP Cyclic Prefix
  • DAC Digital-to-Analog Converter
  • the signal processing process for the received signal in the wireless device may be configured as the inverse of the signal processing processes 1010 to 1060 of FIG. 31.
  • a wireless device eg, 100 and 200 in FIG. 30
  • the received radio signal may be converted into a baseband signal through a signal restorer.
  • the signal recoverer may include a frequency downlink converter (ADC), an analog-to-digital converter (ADC), a CP remover, and a Fast Fourier Transform (FFT) module.
  • ADC frequency downlink converter
  • ADC analog-to-digital converter
  • CP remover a CP remover
  • FFT Fast Fourier Transform
  • the baseband signal may be restored to a codeword through a resource de-mapper process, a postcoding process, a demodulation process, and a de-scramble process.
  • the codeword can be restored to the original information block through decoding.
  • the signal processing circuit (not shown) for the received signal may include a signal restorer, a resource de-mapper, a post coder, a demodulator, a de-scrambler and a decoder.
  • the wireless device 32 shows another example of a wireless device applied to the present disclosure.
  • the wireless device may be implemented in various forms according to use-example / service (see FIG. 29).
  • the wireless devices 100 and 200 correspond to the wireless devices 100 and 200 of FIG. 30, and various elements, components, units / units, and / or modules ).
  • the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130, and additional elements 140.
  • the communication unit may include a communication circuit 112 and a transceiver (s) 114.
  • the communication circuit 112 can include one or more processors 102,202 and / or one or more memories 104,204 of FIG.
  • the transceiver (s) 114 may include one or more transceivers 106,206 and / or one or more antennas 108,208 of FIG. 30.
  • the control unit 120 is electrically connected to the communication unit 110, the memory unit 130, and the additional element 140, and controls various operations of the wireless device. For example, the controller 120 may control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit 130. In addition, the control unit 120 transmits information stored in the memory unit 130 to the outside (eg, another communication device) through the wireless / wired interface through the communication unit 110 or externally (eg, through the communication unit 110). Information received through a wireless / wired interface from another communication device) may be stored in the memory unit 130.
  • the outside eg, another communication device
  • Information received through a wireless / wired interface from another communication device may be stored in the memory unit 130.
  • the additional element 140 may be variously configured according to the type of wireless device.
  • the additional element 140 may include at least one of a power unit / battery, an input / output unit (I / O unit), a driving unit, and a computing unit.
  • wireless devices include robots (FIGS. 29, 100A), vehicles (FIGS. 29, 100B-1, 100B-2), XR devices (FIGS. 29, 100C), portable devices (FIGS. 29, 100D), and household appliances. (Fig. 29, 100e), IoT device (Fig.
  • digital broadcasting terminal digital broadcasting terminal
  • hologram device public safety device
  • MTC device medical device
  • fintech device or financial device
  • security device climate / environment device
  • It may be implemented in the form of an AI server / device (FIGS. 29 and 400), a base station (FIGS. 29 and 200), a network node, and the like.
  • the wireless device may be movable or used in a fixed place depending on the use-example / service.
  • various elements, components, units / parts, and / or modules in the wireless devices 100 and 200 may be connected to each other through a wired interface, or at least some of them may be connected wirelessly through the communication unit 110.
  • the control unit 120 and the communication unit 110 are connected by wire, and the control unit 120 and the first unit (eg, 130 and 140) are connected through the communication unit 110. It can be connected wirelessly.
  • each element, component, unit / unit, and / or module in the wireless devices 100 and 200 may further include one or more elements.
  • the controller 120 may be composed of one or more processor sets.
  • control unit 120 may include a set of communication control processor, application processor, electronic control unit (ECU), graphic processing processor, and memory control processor.
  • memory unit 130 includes random access memory (RAM), dynamic RAM (DRAM), read only memory (ROM), flash memory, volatile memory, and non-volatile memory (non- volatile memory) and / or combinations thereof.
  • the portable device may include a smart phone, a smart pad, a wearable device (eg, a smart watch, smart glasses), and a portable computer (eg, a notebook, etc.).
  • the mobile device may be referred to as a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), an advanced mobile station (AMS), or a wireless terminal (WT).
  • MS mobile station
  • UT user terminal
  • MSS mobile subscriber station
  • SS subscriber station
  • AMS advanced mobile station
  • WT wireless terminal
  • the portable device 100 includes an antenna unit 108, a communication unit 110, a control unit 120, a memory unit 130, a power supply unit 140a, an interface unit 140b, and an input / output unit 140c. ).
  • the antenna unit 108 may be configured as part of the communication unit 110.
  • Blocks 110 to 130 / 140a to 140c correspond to blocks 110 to 130/140 in FIG. 32, respectively.
  • the communication unit 110 may transmit and receive signals (eg, data, control signals, etc.) with other wireless devices and base stations.
  • the controller 120 may perform various operations by controlling the components of the mobile device 100.
  • the controller 120 may include an application processor (AP).
  • the memory unit 130 may store data / parameters / programs / codes / commands necessary for driving the portable device 100. Also, the memory unit 130 may store input / output data / information.
  • the power supply unit 140a supplies power to the portable device 100 and may include a wired / wireless charging circuit, a battery, and the like.
  • the interface unit 140b may support the connection between the mobile device 100 and other external devices.
  • the interface unit 140b may include various ports (eg, audio input / output ports, video input / output ports) for connection with external devices.
  • the input / output unit 140c may receive or output image information / signal, audio information / signal, data, and / or information input from a user.
  • the input / output unit 140c may include a camera, a microphone, a user input unit, a display unit 140d, a speaker, and / or a haptic module.
  • the input / output unit 140c acquires information / signal (eg, touch, text, voice, image, video) input from the user, and the obtained information / signal is transmitted to the memory unit 130 Can be saved.
  • the communication unit 110 may convert information / signals stored in the memory into wireless signals, and transmit the converted wireless signals directly to other wireless devices or to a base station.
  • the communication unit 110 may restore the received radio signal to original information / signal.
  • the restored information / signal is stored in the memory unit 130, it can be output in various forms (eg, text, voice, image, video, heptic) through the input / output unit 140c.
  • Vehicles or autonomous vehicles can be implemented as mobile robots, vehicles, trains, aerial vehicles (AVs), ships, and the like.
  • a vehicle or an autonomous vehicle 100 includes an antenna unit 108, a communication unit 110, a control unit 120, a driving unit 140a, a power supply unit 140b, a sensor unit 140c, and autonomous driving It may include a portion (140d).
  • the antenna unit 108 may be configured as part of the communication unit 110.
  • Blocks 110/130 / 140a-140d correspond to blocks 110/130/140 in FIG. 32, respectively.
  • the communication unit 110 may transmit and receive signals (eg, data, control signals, etc.) with external devices such as other vehicles, base stations (e.g. base stations, road side units, etc.) and servers.
  • the controller 120 may perform various operations by controlling elements of the vehicle or the autonomous vehicle 100.
  • the controller 120 may include an electronic control unit (ECU).
  • the driving unit 140a may cause the vehicle or the autonomous vehicle 100 to travel on the ground.
  • the driving unit 140a may include an engine, a motor, a power train, wheels, brakes, and steering devices.
  • the power supply unit 140b supplies power to the vehicle or the autonomous vehicle 100 and may include a wired / wireless charging circuit, a battery, and the like.
  • the sensor unit 140c may obtain vehicle status, surrounding environment information, user information, and the like.
  • the sensor unit 140c includes an inertial measurement unit (IMU) sensor, a collision sensor, a wheel sensor, a speed sensor, a tilt sensor, a weight sensor, a heading sensor, a position module, and a vehicle forward / Reverse sensor, battery sensor, fuel sensor, tire sensor, steering sensor, temperature sensor, humidity sensor, ultrasonic sensor, illumination sensor, pedal position sensor, and the like.
  • the autonomous driving unit 140d maintains a driving lane, automatically adjusts speed, such as adaptive cruise control, and automatically moves along a predetermined route, and automatically sets a route when a destination is set. Technology, etc. can be implemented.
  • the communication unit 110 may receive map data, traffic information data, and the like from an external server.
  • the autonomous driving unit 140d may generate an autonomous driving route and a driving plan based on the acquired data.
  • the control unit 120 may control the driving unit 140a so that the vehicle or the autonomous vehicle 100 moves along the autonomous driving path according to a driving plan (eg, speed / direction adjustment).
  • a driving plan eg, speed / direction adjustment.
  • the communication unit 110 may acquire the latest traffic information data non-periodically from an external server, and may acquire surrounding traffic information data from nearby vehicles.
  • the sensor unit 140c may acquire vehicle status and surrounding environment information.
  • the autonomous driving unit 140d may update the autonomous driving route and driving plan based on newly acquired data / information.
  • the communication unit 110 may transmit information regarding a vehicle location, an autonomous driving route, and a driving plan to an external server.
  • the external server may predict traffic information data in advance using AI technology or the like based on the information collected from the vehicle or autonomous vehicles, and provide the predicted traffic information data to the vehicle or autonomous vehicles.

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

Abstract

La présente invention concerne un procédé de surveillance de canal de commande de liaison descendante physique (PDCCH) effectué par un terminal dans un système de communication sans fil. Le procédé détecte un signal d'activation pour chacune d'une pluralité d'occasions d'activation présentes dans un délai d'une durée déterminée, et effectue une surveillance de PDCCH lorsque le signal d'activation est détecté.
PCT/KR2019/014487 2018-11-02 2019-10-30 Procédé de surveillance de pdcch effectué par un terminal dans un système de communication sans fil, et terminal mettant en œuvre ce procédé Ceased WO2020091422A1 (fr)

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US201862755393P 2018-11-02 2018-11-02
US201862755376P 2018-11-02 2018-11-02
US201862755384P 2018-11-02 2018-11-02
US62/755,393 2018-11-02
US62/755,376 2018-11-02
US62/755,384 2018-11-02

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WO2023011252A1 (fr) * 2021-08-06 2023-02-09 大唐移动通信设备有限公司 Procédé de communication drx, terminal et support de stockage lisible par ordinateur
CN116347365A (zh) * 2023-05-29 2023-06-27 深圳深蕾科技股份有限公司 一种无线mesh网络组播的传输管理方法
CN116420386A (zh) * 2020-10-14 2023-07-11 苹果公司 用于非连续接收操作的唤醒信号
WO2023160193A1 (fr) * 2022-02-22 2023-08-31 哲库科技(北京)有限公司 Procédé et dispositif de surveillance de pdcch, et support de stockage
CN116806438A (zh) * 2022-01-25 2023-09-26 北京小米移动软件有限公司 一种监听下行控制信息的方法、装置及可读存储介质
WO2023211171A1 (fr) * 2022-04-27 2023-11-02 Samsung Electronics Co., Ltd. Procédé et appareil d'optimisation de c-drx
WO2025156733A1 (fr) * 2024-01-26 2025-07-31 华为技术有限公司 Procédé et appareil de communication

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Cited By (12)

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Publication number Priority date Publication date Assignee Title
CN112449760A (zh) * 2020-10-14 2021-03-05 北京小米移动软件有限公司 Pdcch发送、pdcch接收方法和装置
CN116420386A (zh) * 2020-10-14 2023-07-11 苹果公司 用于非连续接收操作的唤醒信号
CN112449760B (zh) * 2020-10-14 2023-10-03 北京小米移动软件有限公司 Pdcch发送、pdcch接收方法和装置
US12490243B2 (en) 2020-10-14 2025-12-02 Beijing Xiaomi Mobile Software Co., Ltd. PDCCH transmission method and apparatus, and PDCCH receiving method and apparatus
WO2023011252A1 (fr) * 2021-08-06 2023-02-09 大唐移动通信设备有限公司 Procédé de communication drx, terminal et support de stockage lisible par ordinateur
CN115915496A (zh) * 2021-08-06 2023-04-04 大唐移动通信设备有限公司 Drx通信方法、终端及计算机可读存储介质
CN116806438A (zh) * 2022-01-25 2023-09-26 北京小米移动软件有限公司 一种监听下行控制信息的方法、装置及可读存储介质
WO2023160193A1 (fr) * 2022-02-22 2023-08-31 哲库科技(北京)有限公司 Procédé et dispositif de surveillance de pdcch, et support de stockage
WO2023211171A1 (fr) * 2022-04-27 2023-11-02 Samsung Electronics Co., Ltd. Procédé et appareil d'optimisation de c-drx
CN116347365A (zh) * 2023-05-29 2023-06-27 深圳深蕾科技股份有限公司 一种无线mesh网络组播的传输管理方法
CN116347365B (zh) * 2023-05-29 2023-08-18 深圳深蕾科技股份有限公司 一种无线mesh网络组播的传输管理方法
WO2025156733A1 (fr) * 2024-01-26 2025-07-31 华为技术有限公司 Procédé et appareil de communication

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