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WO2023234726A1 - Procédé et dispositif de configuration d'une réception discontinue en liaison latérale dans un système de communication sans fil - Google Patents

Procédé et dispositif de configuration d'une réception discontinue en liaison latérale dans un système de communication sans fil Download PDF

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Publication number
WO2023234726A1
WO2023234726A1 PCT/KR2023/007517 KR2023007517W WO2023234726A1 WO 2023234726 A1 WO2023234726 A1 WO 2023234726A1 KR 2023007517 W KR2023007517 W KR 2023007517W WO 2023234726 A1 WO2023234726 A1 WO 2023234726A1
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WIPO (PCT)
Prior art keywords
drx
information
relay
base station
configuration
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Ceased
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PCT/KR2023/007517
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English (en)
Korean (ko)
Inventor
이영대
백서영
박기원
이승민
서한별
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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
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • 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
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present disclosure relates to a wireless communication system, and more specifically, to a method and device for setting up sidelink discontinuous reception (DRX) in a wireless communication system.
  • DRX sidelink discontinuous reception
  • Mobile communication systems were developed to provide voice services while ensuring user activity.
  • the mobile communication system has expanded its scope to include not only voice but also data services.
  • the explosive increase in traffic is causing a shortage of resources and users are demanding higher-speed services, so a more advanced mobile communication system is required. there is.
  • next-generation mobile communication system The requirements for the next-generation mobile communication system are to support explosive data traffic, a dramatic increase in transmission rate per user, a greatly increased number of connected devices, very low end-to-end latency, and high energy efficiency.
  • dual connectivity massive MIMO (Massive Multiple Input Multiple Output), full duplex (In-band Full Duplex), NOMA (Non-Orthogonal Multiple Access), and ultra-wideband (Super)
  • massive MIMO Massive Multiple Input Multiple Output
  • full duplex In-band Full Duplex
  • NOMA Non-Orthogonal Multiple Access
  • Super ultra-wideband
  • the technical task of the present disclosure is to provide a method and device for configuring/creating SL DRX settings.
  • an additional technical task of the present disclosure is to provide a method and device for determining SL active time based on SL DRX settings.
  • a method performed by a first user equipment (UE) in a wireless communication system receives downlink (DL) information from a base station or a second UE, wherein the DL information is i ) Contains at least one of information about DL traffic patterns for the first UE or the second UE and ii) information about DL discontinuous reception (DRX) settings for the first UE or the second UE. steps; Determining sidelink (SL) DRX settings based on the DL information; And it may include transmitting information about the SL DRX settings.
  • a method performed by a first user equipment (UE) in a wireless communication system includes: setting up a sidelink (SL) discontinuous reception (DRX) from a second UE; receiving information; And it may include determining an SL active time for monitoring sidelink control information (SCI) from the first UE based on the SL DRX configuration.
  • the SL DRX configuration is determined based on downlink (DL) information provided from the base station, and the DL information includes i) information about the DL traffic pattern for the first UE or the second UE, and ii) the first UE. It may include at least one of information about DL DRX settings for 1 UE or the second UE.
  • power consumption of a UE that performs downlink reception from a base station and SL reception from another UE can be reduced.
  • FIG. 1 illustrates the structure of a wireless communication system to which the present disclosure can be applied.
  • FIG. 2 illustrates a frame structure in a wireless communication system to which the present disclosure can be applied.
  • FIG. 3 illustrates a resource grid in a wireless communication system to which the present disclosure can be applied.
  • FIG. 4 illustrates a physical resource block in a wireless communication system to which the present disclosure can be applied.
  • FIG. 5 illustrates a slot structure in a wireless communication system to which the present disclosure can be applied.
  • Figure 6 illustrates physical channels used in a wireless communication system to which the present disclosure can be applied and a general signal transmission and reception method using them.
  • FIG. 7 is a diagram illustrating a DRX cycle in a wireless communication system to which the present disclosure can be applied.
  • Figure 8 shows a procedure for performing V2X or SL communication according to transmission mode in a wireless communication system to which the present disclosure can be applied.
  • Figure 9 illustrates a SL DRX setting method according to an embodiment of the present disclosure.
  • Figure 10 illustrates a signaling procedure for the SL DRX configuration method according to an embodiment of the present disclosure.
  • Figure 11 is a diagram illustrating the operation of a UE for the SL DRX configuration method according to an embodiment of the present disclosure.
  • Figure 12 is a diagram illustrating the operation of a UE for the SL DRX configuration method according to an embodiment of the present disclosure.
  • Figure 13 illustrates a block diagram of a wireless communication device according to an embodiment of the present disclosure.
  • a component when a component is said to be “connected,” “coupled,” or “connected” to another component, this is not only a direct connection relationship, but also an indirect connection relationship where another component exists between them. It may also be included. Additionally, in this disclosure, the terms “comprise” or “having” specify the presence of a referenced feature, step, operation, element, and/or component, but may also specify the presence of one or more other features, steps, operations, elements, components, and/or components. It does not rule out the existence or addition of these groups.
  • first”, second, etc. are used only for the purpose of distinguishing one component from another component and are not used to limit the components, and unless specifically mentioned, the terms There is no limitation on the order or importance between them. Accordingly, within the scope of the present disclosure, a first component in one embodiment may be referred to as a second component in another embodiment, and similarly, the second component in one embodiment may be referred to as a first component in another embodiment. It may also be called.
  • This disclosure describes a wireless communication network or wireless communication system, and operations performed in the wireless communication network include controlling the network and transmitting or receiving signals at a device (e.g., a base station) in charge of the wireless communication network. It can be done in the process of receiving, or it can be done in the process of transmitting or receiving signals from a terminal connected to the wireless network to or between terminals.
  • a device e.g., a base station
  • transmitting or receiving a channel includes transmitting or receiving information or signals through the corresponding channel.
  • transmitting a control channel means transmitting control information or signals through the control channel.
  • transmitting a data channel means transmitting data information or signals through a data channel.
  • downlink refers to communication from the base station to the terminal
  • uplink refers to communication from the terminal to the base station
  • DL downlink
  • UL uplink
  • the transmitter may be part of the base station and the receiver may be part of the terminal.
  • the transmitter may be part of the terminal and the receiver may be part of the base station.
  • the base station may be represented as a first communication device
  • the terminal may be represented as a second communication device.
  • a base station (BS) is a fixed station, Node B, evolved-NodeB (eNB), Next Generation NodeB (gNB), base transceiver system (BTS), access point (AP), and network (5G).
  • eNB evolved-NodeB
  • gNB Next Generation NodeB
  • BTS base transceiver system
  • AP access point
  • 5G network
  • the terminal may be fixed or mobile, and may include UE (User Equipment), MS (Mobile Station), UT (user terminal), MSS (Mobile Subscriber Station), SS (Subscriber Station), and AMS (Advanced Mobile).
  • UE User Equipment
  • MS Mobile Station
  • UT user terminal
  • MSS Mobile Subscriber Station
  • SS Subscriber Station
  • AMS Advanced Mobile
  • MTC Machine-Type Communication
  • M2M Machine-to-Machine
  • D2D Device-to-Device
  • vehicle RSU (road side unit)
  • robot AI (Artificial Intelligence) module
  • UAV Unmanned Aerial Vehicle
  • AR Algmented Reality
  • VR Virtual Reality
  • CDMA can be implemented with wireless technologies such as Universal Terrestrial Radio Access (UTRA) or CDMA2000.
  • TDMA can be implemented with wireless technologies such as Global System for Mobile communications (GSM)/General Packet Radio Service (GPRS)/Enhanced Data Rates for GSM Evolution (EDGE).
  • EDGE Enhanced Data Rates for GSM Evolution
  • OFDMA can be implemented with wireless technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, Evolved UTRA (E-UTRA), etc.
  • UTRA is part of the Universal Mobile Telecommunications System (UMTS).
  • 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is part of Evolved UMTS (E-UMTS) using E-UTRA
  • LTE-A (Advanced)/LTE-A pro is an evolved version of 3GPP LTE
  • 3GPP NR New Radio or New Radio Access Technology
  • 3GPP LTE/LTE-A/LTE-A pro is an evolved version of 3GPP LTE/LTE-A/LTE-A pro.
  • LTE refers to technology after 3GPP TS (Technical Specification) 36.xxx Release 8.
  • LTE technology after 3GPP TS 36.xxx Release 10 is referred to as LTE-A
  • LTE technology after 3GPP TS 36.xxx Release 13 is referred to as LTE-A pro
  • 3GPP NR refers to technology after TS 38.xxx Release 15.
  • LTE/NR may be referred to as a 3GPP system.
  • “xxx” refers to the standard document detail number.
  • LTE/NR can be collectively referred to as a 3GPP system.
  • terms, abbreviations, etc. used in the description of the present disclosure reference may be made to matters described in standard documents published prior to the present disclosure. For example, you can refer to the following document:
  • TS 36.211 Physical Channels and Modulation
  • TS 36.212 Multiplexing and Channel Coding
  • TS 36.213 Physical Layer Procedures
  • TS 36.300 General Description
  • TS 36.331 Radio Resource Control
  • TS 38.211 physical channels and modulation
  • TS 38.212 multiplexing and channel coding
  • TS 38.213 physical layer procedures for control
  • TS 38.214 physical layer procedures for data
  • TS 38.300 Overall description of NR and NG-RAN (New Generation-Radio Access Network)
  • TS 38.331 Radio Resource Control Protocol Specification
  • channel state information - reference signal resource indicator channel state information - reference signal resource indicator
  • Synchronization signal block (including primary synchronization signal (PSS: primary synchronization signal), secondary synchronization signal (SSS: secondary synchronization signal), and physical broadcast channel (PBCH: physical broadcast channel))
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • PBCH physical broadcast channel
  • NR is an expression representing an example of 5G RAT.
  • the new RAT system including NR uses OFDM transmission method or similar transmission method.
  • the new RAT system may follow OFDM parameters that are different from those of LTE.
  • the new RAT system follows the numerology of existing LTE/LTE-A but can support a larger system bandwidth (for example, 100 MHz).
  • one cell may support multiple numerologies. In other words, terminals operating with different numerologies can coexist within one cell.
  • Numerology corresponds to one subcarrier spacing in the frequency domain.
  • different numerologies can be defined.
  • FIG. 1 illustrates the structure of a wireless communication system to which the present disclosure can be applied.
  • NG-RAN is a NG-Radio Access (NG-RA) user plane (i.e., a new access stratum (AS) sublayer/Packet Data Convergence Protocol (PDCP)/Radio Link Control (RLC)/MAC/ It consists of gNBs that provide PHY) and control plane (RRC) protocol termination for the UE.
  • the gNBs are interconnected through the Xn interface.
  • the gNB is also connected to NGC (New Generation Core) through the NG interface. More specifically, the gNB is connected to the Access and Mobility Management Function (AMF) through the N2 interface and to the User Plane Function (UPF) through the N3 interface.
  • AMF Access and Mobility Management Function
  • UPF User Plane Function
  • FIG. 2 illustrates a frame structure in a wireless communication system to which the present disclosure can be applied.
  • numerology can be defined by subcarrier spacing and Cyclic Prefix (CP) overhead.
  • CP Cyclic Prefix
  • multiple subcarrier spacing can be derived by scaling the basic (reference) subcarrier spacing by an integer N (or ⁇ ).
  • N or ⁇
  • the numerology used can be selected independently of the frequency band.
  • various frame structures according to multiple numerologies can be supported.
  • OFDM numerology and frame structures that can be considered in the NR system.
  • Multiple OFDM numerologies supported in the NR system can be defined as Table 1 below.
  • NR supports multiple numerologies (or subcarrier spacing (SCS)) to support various 5G services. For example, if SCS is 15kHz, it supports wide area in traditional cellular bands, and if SCS is 30kHz/60kHz, it supports dense-urban, lower latency. and a wider carrier bandwidth, and when SCS is 60kHz or higher, it supports a bandwidth greater than 24.25GHz to overcome phase noise.
  • SCS subcarrier spacing
  • the NR frequency band is defined as two types of frequency ranges (FR1, FR2).
  • FR1 and FR2 can be configured as shown in Table 2 below. Additionally, FR2 may mean millimeter wave (mmW).
  • mmW millimeter wave
  • ⁇ f max 480 ⁇ 10 3 Hz
  • N f 4096.
  • slots are numbered in increasing order of n s ⁇ ⁇ ⁇ 0,..., N slot subframe, ⁇ -1 ⁇ within a subframe, and within a radio frame. They are numbered in increasing order: n s,f ⁇ ⁇ 0,..., N slot frame, ⁇ -1 ⁇ .
  • One slot consists of consecutive OFDM symbols of N symb slots , and N symb slots are determined according to CP.
  • the start of slot n s ⁇ in a subframe is temporally aligned with the start of OFDM symbol n s ⁇ N symb slot in the same subframe. Not all terminals can transmit and receive at the same time, which means that not all OFDM symbols in a downlink slot or uplink slot can be used.
  • Table 3 shows the number of OFDM symbols per slot (N symb slot ), the number of slots per wireless frame (N slot frame, ⁇ ), and the number of slots per subframe (N slot subframe, ⁇ ) in the general CP.
  • Table 4 represents the number of OFDM symbols per slot, the number of slots per radio frame, and the number of slots per subframe in the extended CP.
  • 1 subframe may include 4 slots.
  • a mini-slot may contain 2, 4, or 7 symbols, or may contain more or fewer symbols.
  • antenna port for example, antenna port, resource grid, resource element, resource block, carrier part, etc. can be considered.
  • resource grid resource element, resource block, carrier part, etc.
  • carrier part etc.
  • the antenna port is defined so that a channel carrying a symbol on the antenna port can be inferred from a channel carrying another symbol on the same antenna port. If the large-scale properties of the channel carrying the symbols on one antenna port can be inferred from the channel carrying the symbols on the other antenna port, the two antenna ports are quasi co-located or QC/QCL. It can be said that they are in a quasi co-location relationship.
  • the wide range characteristics include one or more of delay spread, Doppler spread, frequency shift, average received power, and received timing.
  • FIG. 3 illustrates a resource grid in a wireless communication system to which the present disclosure can be applied.
  • the resource grid is composed of N RB ⁇ N sc RB subcarriers in the frequency domain, and one subframe is composed of 14 ⁇ 2 ⁇ OFDM symbols, but is limited to this. It doesn't work.
  • the transmitted signal is described by one or more resource grids consisting of N RB ⁇ N sc RB subcarriers and OFDM symbols of 2 ⁇ N symb ( ⁇ ) .
  • N RB ⁇ N RB max, ⁇ represents the maximum transmission bandwidth, which may vary between uplink and downlink as well as numerologies.
  • one resource grid can be set for each ⁇ and antenna port p.
  • Each element of the resource grid for ⁇ and antenna port p is referred to as a resource element and is uniquely identified by an index pair (k,l').
  • l' 0,...,2 ⁇ N symb ( ⁇ ) -1 is the symbol in the subframe. refers to the location of When referring to a resource element in a slot, the index pair (k,l) is used.
  • l 0,...,N symb ⁇ -1.
  • the resource element (k,l') for ⁇ and antenna port p corresponds to the complex value a k,l' (p, ⁇ ) .
  • indices p and ⁇ may be dropped, resulting in the complex value a k,l' (p) or It can be a k,l' .
  • Point A serves as a common reference point of the resource block grid and is obtained as follows.
  • - offsetToPointA for primary cell (PCell: Primary Cell) downlink represents the frequency offset between point A and the lowest subcarrier of the lowest resource block overlapping with the SS/PBCH block used by the terminal for initial cell selection. It is expressed in resource block units assuming a 15kHz subcarrier spacing for FR1 and a 60kHz subcarrier spacing for FR2.
  • - absoluteFrequencyPointA represents the frequency-position of point A expressed as in ARFCN (absolute radio-frequency channel number).
  • Common resource blocks are numbered upward from 0 in the frequency domain for the subcarrier spacing setting ⁇ .
  • the center of subcarrier 0 of common resource block 0 for the subcarrier interval setting ⁇ coincides with 'point A'.
  • the relationship between the common resource block number n CRB ⁇ and the resource elements (k,l) for the subcarrier interval setting ⁇ is given as Equation 1 below.
  • Physical resource blocks are numbered from 0 to N BWP,i size, ⁇ -1 within the bandwidth part (BWP), where i is the number of the BWP.
  • BWP bandwidth part
  • Equation 2 The relationship between physical resource block n PRB and common resource block n CRB in BWP i is given by Equation 2 below.
  • N BWP,i start, ⁇ is the common resource block from which BWP starts relative to common resource block 0.
  • Figure 4 illustrates a physical resource block in a wireless communication system to which the present disclosure can be applied.
  • Figure 5 illustrates a slot structure in a wireless communication system to which the present disclosure can be applied.
  • a slot includes a plurality of symbols in the time domain. For example, in the case of normal CP, one slot includes 7 symbols, but in the case of extended CP, one slot includes 6 symbols.
  • a carrier wave includes a plurality of subcarriers in the frequency domain.
  • RB Resource Block
  • BWP Bandwidth Part
  • a carrier wave may include up to N (e.g., 5) BWPs. Data communication is performed through an activated BWP, and only one BWP can be activated for one terminal.
  • Each element in the resource grid is referred to as a resource element (RE), and one complex symbol can be mapped.
  • RE resource element
  • the NR system can support up to 400 MHz per one component carrier (CC: Component Carrier). If a terminal operating in such a wideband CC (wideband CC) always operates with the radio frequency (RF) chip for the entire CC turned on, terminal battery consumption may increase.
  • CC Component Carrier
  • RF radio frequency
  • different numerology e.g., subcarrier spacing, etc.
  • the maximum bandwidth capability may be different for each terminal.
  • the base station can instruct the terminal to operate only in a part of the bandwidth rather than the entire bandwidth of the broadband CC, and the part of the bandwidth is defined as a bandwidth part (BWP) for convenience.
  • BWP may be composed of consecutive RBs on the frequency axis and may correspond to one numerology (e.g., subcarrier interval, CP length, slot/mini-slot section).
  • the base station can set multiple BWPs even within one CC set for the terminal. For example, in the PDCCH monitoring slot, a BWP that occupies a relatively small frequency area is set, and the PDSCH indicated by the PDCCH can be scheduled on a larger BWP. Alternatively, if UEs are concentrated in a specific BWP, some UEs can be set to other BWPs for load balancing. Alternatively, considering frequency domain inter-cell interference cancellation between neighboring cells, etc., a portion of the spectrum from the entire bandwidth can be excluded and both BWPs can be set within the same slot. That is, the base station can set at least one DL/UL BWP to a terminal associated with a broadband CC.
  • the base station may activate at least one DL/UL BWP(s) among the DL/UL BWP(s) set at a specific time (by L1 signaling or MAC CE (Control Element) or RRC signaling, etc.). Additionally, the base station may indicate switching to another configured DL/UL BWP (by L1 signaling or MAC CE or RRC signaling, etc.). Alternatively, based on a timer, when the timer value expires, it may be switched to a designated DL/UL BWP. At this time, the activated DL/UL BWP is defined as an active DL/UL BWP.
  • the terminal may not receive settings for the DL/UL BWP, so in these situations, the terminal This assumed DL/UL BWP is defined as the first active DL/UL BWP.
  • Figure 6 illustrates physical channels used in a wireless communication system to which the present disclosure can be applied and a general signal transmission and reception method using them.
  • a terminal receives information from a base station through downlink, and the terminal transmits information to the base station through uplink.
  • the information transmitted and received between the base station and the terminal includes data and various control information, and various physical channels exist depending on the type/purpose of the information they transmit and receive.
  • the terminal When the terminal is turned on or enters a new cell, it performs an initial cell search task such as synchronizing with the base station (S601). To this end, the terminal receives a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) from the base station to synchronize with the base station and obtain information such as a cell identifier (ID: Identifier). You can. Afterwards, the terminal can receive broadcast information within the cell by receiving a physical broadcast channel (PBCH) from the base station. Meanwhile, the terminal can check the downlink channel status by receiving a downlink reference signal (DL RS) in the initial cell search stage.
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • ID cell identifier
  • the terminal can receive broadcast information within the cell by receiving a physical broadcast channel (PBCH) from the base station. Meanwhile, the terminal can check the downlink channel status by receiving a downlink reference signal (DL RS) in the initial cell search stage.
  • PBCH physical broadcast channel
  • the terminal After completing the initial cell search, the terminal acquires more specific system information by receiving a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH: physical downlink control channel) according to the information carried in the PDCCH. You can do it (S602).
  • a physical downlink control channel (PDCCH)
  • a physical downlink shared channel (PDSCH: physical downlink control channel)
  • the terminal may perform a random access procedure (RACH) to the base station (steps S603 to S606).
  • RACH random access procedure
  • the terminal may transmit a specific sequence as a preamble through a physical random access channel (PRACH) (S603 and S605) and receive a response message for the preamble through the PDCCH and the corresponding PDSCH ( S604 and S606).
  • PRACH physical random access channel
  • an additional conflict resolution procedure Contention Resolution Procedure
  • the terminal that has performed the above-described procedure then performs PDCCH/PDSCH reception (S607) and Physical Uplink Shared Channel (PUSCH)/Physical Uplink Control Channel (PUCCH) as a general uplink/downlink signal transmission procedure.
  • Physical Uplink Control Channel) transmission (S608) can be performed.
  • the terminal receives downlink control information (DCI) through PDCCH.
  • DCI includes control information such as resource allocation information for the terminal, and has different formats depending on the purpose of use.
  • the control information that the terminal transmits to the base station through the uplink or that the terminal receives from the base station includes downlink/uplink ACK/NACK (Acknowledgement/Non-Acknowledgement) signals, CQI (Channel Quality Indicator), and PMI (Precoding Matrix). Indicator), RI (Rank Indicator), etc.
  • the terminal can transmit control information such as the above-described CQI/PMI/RI through PUSCH and/or PUCCH.
  • Table 5 shows an example of the DCI format in the NR system.
  • DCI format uses 0_0 Scheduling of PUSCH within one cell 0_1 Scheduling of one or multiple PUSCHs in one cell, or instruction of cell group (CG: cell group) downlink feedback information to the UE.
  • CG cell group
  • 0_2 Scheduling of PUSCH within one cell 1_0 Scheduling of PDSCH within one DL cell 1_1 Scheduling of PDSCH within one cell 1_2 Scheduling of PDSCH within one cell
  • DCI format 0_0, 0_1, and 0_2 include resource information related to scheduling of PUSCH (e.g., UL/SUL (Supplementary UL), frequency resource allocation, time resource allocation, frequency hopping, etc.), transport block ( TB: Transport Block) related information (e.g. MCS (Modulation Coding and Scheme), NDI (New Data Indicator), RV (Redundancy Version), etc.), HARQ (Hybrid - Automatic Repeat and request) related information (e.g.
  • DCI Downlink Assignment Index
  • PDSCH-HARQ feedback timing etc.
  • multi-antenna related information e.g., DMRS sequence initialization information, antenna port, CSI request, etc.
  • power control information e.g., PUSCH power control, etc.
  • control information included in each DCI format may be defined in advance.
  • DCI format 0_0 is used for scheduling PUSCH in one cell.
  • the information contained in DCI format 0_0 is checked by CRC (cyclic redundancy check) by C-RNTI (Cell RNTI: Cell Radio Network Temporary Identifier) or CS-RNTI (Configured Scheduling RNTI) or MCS-C-RNTI (Modulation Coding Scheme Cell RNTI). ) is scrambled and transmitted.
  • CRC cyclic redundancy check
  • C-RNTI Cell RNTI: Cell Radio Network Temporary Identifier
  • CS-RNTI Configured Scheduling RNTI
  • MCS-C-RNTI Modulation Coding Scheme Cell RNTI
  • DCI format 0_1 is used to indicate scheduling of one or more PUSCHs in one cell or configured grant (CG: configure grant) downlink feedback information to the UE.
  • the information included in DCI format 0_1 is transmitted after CRC scrambling by C-RNTI or CS-RNTI or SP-CSI-RNTI (Semi-Persistent CSI RNTI) or MCS-C-RNTI.
  • DCI format 0_2 is used for scheduling PUSCH in one cell.
  • Information included in DCI format 0_2 is transmitted after CRC scrambling by C-RNTI or CS-RNTI or SP-CSI-RNTI or MCS-C-RNTI.
  • DCI format 1_0, 1_1, and 1_2 are resource information related to scheduling of PDSCH (e.g., frequency resource allocation, time resource allocation, virtual resource block (VRB)-physical resource block (PRB) mapping, etc.), transport block (TB) related information (e.g. MCS, NDI, RV, etc.), HARQ related information (e.g. process number, DAI, PDSCH-HARQ feedback timing, etc.), multi-antenna related information (e.g. antenna port , transmission configuration indicator (TCI), sounding reference signal (SRS) request, etc.), PUCCH-related information (e.g., PUCCH power control, PUCCH resource indicator, etc.), and the control information included in each DCI format is Can be predefined.
  • DCI format 1_0 is used for scheduling PDSCH in one DL cell.
  • Information included in DCI format 1_0 is transmitted after CRC scrambling by C-RNTI, CS-RNTI, or MCS-C-RNTI.
  • DCI format 1_1 is used for scheduling PDSCH in one cell.
  • Information included in DCI format 1_1 is transmitted after CRC scrambling by C-RNTI, CS-RNTI, or MCS-C-RNTI.
  • DCI format 1_2 is used for scheduling PDSCH in one cell.
  • Information included in DCI format 1_2 is transmitted after CRC scrambling by C-RNTI, CS-RNTI, or MCS-C-RNTI.
  • a UE with DRX configured can lower power consumption by receiving DL signals discontinuously.
  • DRX can be performed in RRC_IDLE state, RRC_INACTIVE state, and RRC_CONNECTED state.
  • RRC_CONNECTED state DRX is used for discontinuous reception of PDCCH.
  • RRC_CONNECTED DRX DRX performed in RRC_CONNECTED state is referred to as RRC_CONNECTED DRX.
  • FIG. 7 is a diagram illustrating a DRX cycle in a wireless communication system to which the present disclosure can be applied.
  • the DRX cycle consists of On Duration and Opportunity for DRX.
  • the DRX cycle defines the time interval in which On Duration is periodically repeated.
  • On Duration indicates the time interval that the UE monitors to receive the PDCCH.
  • the UE performs PDCCH monitoring during On Duration. If there is a PDCCH successfully detected during PDCCH monitoring, the UE starts an inactivity timer and maintains the awake state. On the other hand, if no PDCCH is successfully detected during PDCCH monitoring, the UE enters a sleep state after the On Duration ends. Accordingly, when DRX is set, PDCCH monitoring/reception may be performed discontinuously in the time domain when performing the procedures and/or methods described/suggested above.
  • Table 6 shows the terminal process related to DRX (RRC_CONNECTED state).
  • DRX-related configuration information is received through upper layer (e.g., RRC) signaling (e.g., DRX-Config), and DRX ON/OFF is determined by the DRX command MAC CE of the MAC layer. It is controlled.
  • RRC Radio Resource Control
  • DRX ON/OFF is determined by the DRX command MAC CE of the MAC layer. It is controlled.
  • the UE can discontinuously perform PDCCH monitoring, as illustrated in FIG. 7.
  • configuration information for the MAC cell group includes configuration information necessary to set MAC parameters for the cell group.
  • MAC-CellGroupConfig may also include configuration information about DRX (e.g., DRX-Config).
  • configuration information about DRX e.g., DRX-Config
  • DRX-Config may include information to define DRX as follows.
  • - drx-onDurationTimer Defines the duration in time of the DRX cycle.
  • - drx-SlotOffset Defines the delay before the start of drx-onDurationTimer.
  • - drx-InactivityTimer Defines the duration after the PDCCH opportunity (occasion) when the PDCCH indicates a new UL, DL or SL for the MAC entity.
  • - drx-RetransmissionTimerDL Defines the maximum period until DL retransmission is received.
  • - drx-RetransmissionTimerUL Defines the maximum period until a grant for UL retransmission is received.
  • - drx-LongCycleStartOffset Indicates a long DRX cycle and also defines the subframe in which the long and short DRX cycles start.
  • - drx-ShortCycleTimer (optional): Defines the period during which the UE should follow the short DRX cycle.
  • - drx-HARQ-RTT-TimerDL Defines the minimum period before DL assignment for HARQ retransmission expected by the MAC entity.
  • - drx-HARQ-RTT-TimerUL Defines the minimum period before the UL HARQ retransmission grant expected by the MAC entity.
  • the DRX inactivity timer (drx-InactivityTimer) is started/restarted, and the DRX inactivity timer (drx-InactivityTimer) is The UE remains awake until expiration.
  • a short DRX cycle can be selectively performed. That is, the base station can configure the UE to use a short DRX cycle by including a short DRX parameter set (i.e., drx-ShortCycle, drx-ShortCycleTimer) in DRX-Config.
  • a short DRX parameter set i.e., drx-ShortCycle, drx-ShortCycleTimer
  • the UE maintains the DRX active state for the period defined by the DRX on-duration timer (drx-onDurationTimer).
  • the DRX inactivity timer (drx-InactivityTimer) is restarted, and the above-described operation continues thereafter.
  • the long DRX cycle begins.
  • a long DRX cycle may begin when the DRX inactivity timer (drx-InactivityTimer) expires.
  • DRX activity active after the DRX offset (drx-SlotOffset) ) section begins.
  • the DRX UL HARQ RTT (round trip time) timer (drx-HARQ-RTT-TimerUL) is in the DRX active state associated with the end of the first repetition of PUSCH transmission (end of PUSCH transmission if PUSCH repetition is not set). Specifies the return timing.
  • the UE switches from DRX inactive to DRX active state.
  • the UE maintains the DRX active state during the period defined by the DRX UL retransmission timer (drx-RetransmissionTimerUL).
  • the UE if the UE enters the DRX inactive state after receiving downlink data on the PDSCH and the UE transmits a negative acknowledgment (NACK) for the data on the PUCCH, the UE returns to the DRX active state to receive retransmission from the base station. Needs to be.
  • the DRX DL HARQ RTT timer (drx-HARQ-RTT-TimerDL) starts after the UE transmits NACK on PUCCH. That is, when the DRX DL HARQ RTT timer (drx-HARQ-RTT-TimerDL) expires, the UE switches from DRX inactive to DRX active state. The UE maintains the DRX active state for the period defined by the DRX DL retransmission timer (drx-RetransmissionTimerDL).
  • the DRX command MAC CE and long DRX command MAC CE are used. It is used.
  • the DRX command MAC CE instructs the UE to enter the DRX inactive state. If short DRX is set, the UE starts a short DRX cycle, and if short DRX is not set, the UE starts a long DRX cycle.
  • the long DRX command MAC CE instructs the UE to enter the DRX inactive state and start a long DRX cycle.
  • V2X vehicle-to-everything
  • SL sidelink
  • Figure 8 shows a procedure for performing V2X or SL communication according to transmission mode in a wireless communication system to which the present disclosure can be applied.
  • the transmission mode may be referred to as a mode or resource allocation mode.
  • the transmission mode in LTE may be referred to as the LTE transmission mode
  • the transmission mode in NR may be referred to as the NR resource allocation mode.
  • Figure 8(a) shows the operation of a UE related to LTE transmission mode 1 or LTE transmission mode 3.
  • Figure 8(a) shows the operation of the UE related to NR resource allocation mode 1.
  • LTE transmission mode 1 can be applied to general SL communication
  • LTE transmission mode 3 can be applied to V2X communication.
  • Figure 8(b) shows the operation of the UE related to LTE transmission mode 2 or LTE transmission mode 4.
  • Figure 8(b) shows the operation of the UE related to NR resource allocation mode 2.
  • the base station may schedule SL resources to be used by the UE for SL transmission (S8000).
  • the base station may transmit information related to SL resources and/or information related to UL resources to the first UE.
  • the UL resources may include PUCCH resources and/or PUSCH resources.
  • the UL resource may be a resource for reporting SL HARQ feedback to the base station.
  • the first UE may receive information related to dynamic grant (DG) resources and/or information related to configured grant (CG) resources from the base station.
  • CG resources may include CG Type 1 resources or CG Type 2 resources.
  • the DG resource may be a resource that the base station configures/assigns to the first UE through DCI.
  • the CG resource may be a (periodic) resource that the base station configures/allocates to the first UE through a DCI and/or RRC message.
  • the base station may transmit an RRC message containing information related to the CG resource to the first UE.
  • the base station may transmit an RRC message containing information related to the CG resource to the first UE, and the base station may send a DCI related to activation or release of the CG resource. It can be transmitted to the first UE.
  • the first UE may transmit PSCCH (e.g., Sidelink Control Information (SCI) or 1st-stage SCI) to the second UE based on the resource scheduling (S8010).
  • PSCCH e.g., Sidelink Control Information (SCI) or 1st-stage SCI
  • the first UE may transmit a PSSCH (e.g., 2nd-stage SCI, MAC protocol data unit (PDU), data, etc.) related to the PSCCH to the second UE (S8020) .
  • a PSSCH e.g., 2nd-stage SCI, MAC protocol data unit (PDU), data, etc.
  • the first UE may receive PSFCH related to PSCCH/PSSCH from the second UE (S8030).
  • PSFCH related to PSCCH/PSSCH
  • HARQ feedback information eg, NACK information or ACK information
  • NACK information or ACK information may be received from the second UE through the PSFCH.
  • the first UE may transmit/report HARQ feedback information to the base station through PUCCH or PUSCH (S8040).
  • the HARQ feedback information reported to the base station may be information that the first UE generates based on HARQ feedback information received from the second UE.
  • the HARQ feedback information reported to the base station may be information that the first UE generates based on preset rules.
  • the DCI may be a DCI for scheduling of SL.
  • the format of the DCI may be DCI format 3_0 or DCI format 3_1.
  • the UE in LTE transmission mode 2, LTE transmission mode 4, or NR resource allocation mode 2, can determine the SL transmission resource within the SL resource set by the base station/network or within the preset SL resource. .
  • the set SL resource or preset SL resource may be a resource pool.
  • the UE can autonomously select or schedule resources for SL transmission.
  • the UE can self-select resources within a configured resource pool and perform SL communication.
  • the UE may perform sensing and resource (re)selection procedures to select resources on its own within a selection window.
  • the sensing may be performed on a sub-channel basis.
  • the first UE which has selected a resource within the resource pool, may transmit a PSCCH (eg, SCI or 1st-stage SCI) to the second UE using the resource (S8010).
  • a PSCCH eg, SCI or 1st-stage SCI
  • the first UE may transmit a PSSCH (e.g., 2nd-stage SCI, MAC PDU, data, etc.) related to the PSCCH to the second UE (S8020).
  • a PSSCH e.g., 2nd-stage SCI, MAC PDU, data, etc.
  • the first UE may receive the PSFCH related to the PSCCH/PSSCH from the second UE (S8030).
  • the first UE may transmit SCI to the second UE on PSCCH.
  • the first UE may transmit two consecutive SCIs (eg, 2-stage SCI) on the PSCCH and/or PSSCH to the second UE.
  • the second UE may decode two consecutive SCIs (eg, 2-stage SCI) to receive the PSSCH from the first UE.
  • the SCI transmitted on the PSCCH may be referred to as a 1st SCI, 1st SCI, 1st-stage SCI, or 1st-stage SCI format
  • the SCI transmitted on the PSSCH may be referred to as a 2nd (2nd ) SCI format.
  • the 1st-stage SCI format may include SCI format 1-A
  • the 2nd-stage SCI format may include SCI format 2-A and/or SCI format 2-B.
  • the first UE may receive PSFCH based on the description described later.
  • the first UE and the second UE may determine PSFCH resources based on the description described later, and the second UE may transmit HARQ feedback to the first UE using the PSFCH resource.
  • SL supports SL DRX for unicast, groupcast, and broadcast.
  • parameters similar to those defined for Uu i.e. link between base station and UE
  • on-duration, inactivity-timer, A retransmission-timer (cycle) is defined for SL.
  • the UE performs SCI monitoring for data reception (i.e., level 2 SCI of PSCCH and PSSCH). The UE can skip SCI monitoring for data reception during SL DRX inactive time.
  • the SL active time of the RX UE includes the time when the applicable SL on-duration timer(s), SL inactivity-timer(s) or SL retransmission timer(s) (for unicast, groupcast or broadcast) is running. Additionally, slots related to periodic transmission announced by the TX UE and the time when the UE expects a CSI report following a CSI request (for unicast) are considered as the SL active time of the RX UE.
  • the TX UE uses a timer corresponding to the SL DRX timer of the RX UE(s) for a pair of source/destination L2 (layer 2) IDs (identifier) for unicast or a destination L2 ID for groupcast/broadcast. Maintain the set. If data for transmission is available to one or more RX UE(s) configured as SL DRX, the TX UE selects resources by considering the active time of the RX UE(s) determined by the timer maintained in the TX UE.
  • alignment of Uu DRX and SL DRX is supported for unicast, groupcast, and broadcast. Alignment of Uu DRX and SL DRX in the same UE is supported. Additionally, in case of mode 1 scheduling, alignment of Uu DRX of TX UE and SL DRX of RX UE is supported.
  • the alignment may include total or partial overlap in time between Uu DRX and SL DRX.
  • alignment is performed by the gNB.
  • the MAC entity can be set by RRC with the SL DRX function that controls the UE's SCI (i.e., level 1 SCI and level 2 SCI) to monitor activity for unicast, groupcast, and broadcast.
  • the MAC entity When using SL DRX operation, the MAC entity must also monitor SCI (i.e. level 1 SCI and level 2 SCI) as per requirements.
  • RRC controls sidelink DRX operation by setting the following parameters.
  • - sl-drx-onDurationTimer Defines the duration at the start of the SL DRX cycle.
  • - sl-drx-SlotOffset Defines the delay before starting sl-drx-onDurationTimer.
  • - sl-drx-InactivityTimer (excluding broadcast transmission): Defines the duration after receiving the first slot of the SCI (i.e., level 1 SCI and level 2 SCI) indicating new SL transmission to the MAC entity.
  • - sl-drx-RetransmissionTimer (per sidelink process excluding broadcast transmission): Defines the maximum duration until an SL retransmission is received.
  • - sl-drx-HARQ-RTT-Timer (per sidelink process excluding broadcast transmission): Defines the minimum duration before SL HARQ retransmission expected by the MAC entity.
  • the active timer contains times during:
  • the UE transmitting sidelink shared channel (SL-SCH) data must maintain alignment with the UE receiving SL-SCH data in relation to the SL DRX active time described above.
  • the UE transmitting SL-SCH data is running an SL DRX timer (e.g., sl-drx-onDurationTimer, sl-drx-InactivityTimer) that is running in the UE(s) receiving SL-SCH data or will be running in the future.
  • SL DRX timer e.g., sl-drx-onDurationTimer, sl-drx-InactivityTimer
  • sl-drx-RetransmissionTimer determines the SL DRX active time.
  • the UE can select a resource for the first transmission of groupcast within the time when the sl-drx-onDurationTimer or sl-drx-InactivityTimer of the destination is running.
  • a specific UE performing sidelink communication is a relay UE and/or a remote UE, but the present disclosure is not limited thereto. That is, in the following description of the present disclosure, the relay UE and remote UE may be replaced by the first UE and the second UE, respectively, or vice versa.
  • the relay UE is connected to the base station through the Uu interface (i.e., the interface/link between the UE and the base station), and the remote UE is connected to the PC5 interface (i.e., the interface/link between the UE and the UE). It may refer to a UE connected through . Additionally, in the description of the present disclosure, the relay UE may be referred to as a U2N relay UE in a UE-to-Network Relay (U2N Relay) architecture, but this is for convenience of description and the present disclosure It is not limited to this.
  • U2N Relay UE-to-Network Relay
  • a remote UE may refer to a UE that has a connection between base stations indirectly via a relay UE, but is not limited thereto. In addition, it may have a connection with the base station directly without going through a relay UE. .
  • the remote UE may be referred to as a U2N remote UE in the U2N Relay architecture, but this is for convenience of description and the present disclosure is not limited thereto.
  • PC5 or PC5-RRC connection means an interface/link/connection for communication between UE and UE, and can be interpreted to have the same meaning as a side link (connection) between UE and UE.
  • Uu or Uu RRC connection refers to an interface/link/connection for communication between the UE and the base station, and can be interpreted to have the same meaning as the uplink/downlink (connection) between the base station and the UE.
  • the relay UE when the relay UE (relay UE) and the remote UE (remote UE) are set to the UE-to-Network Relay (U2N Relay: UE-to-Network Relay) function, the relay UE is a U2N remote UE(s) ) provides connectivity to the network.
  • U2N relay function is based on the L3 (layer 3) U2N Relay architecture, the base station cannot accurately know the SL active time used by the relay UE and remote UE. Therefore, there is a problem that the SL active time may not be well coordinated with the relay UE's UL transmission(s) and DL reception(s), which may lead to non-optimal UE power consumption.
  • the present disclosure proposes a method to configure/construct SL DRX configuration by relay UE and/or remote UE.
  • a method for transmitting and receiving data by relay UE and/or remote UE for this purpose proposes a method for transmitting and receiving data by relay UE and/or remote UE for this purpose.
  • the proposed method of this disclosure includes the following steps:
  • the remote UE can establish a PC5-RRC connection with the relay UE. That is, the remote UE and relay UE can establish an SL connection.
  • the - Relay UE and Remote UE can each construct and configure the first SL DRX configuration for PC5-RRC connection (i.e. SL connection).
  • the remote UE may transmit the first SL DRX configuration to the relay UE, or vice versa, the relay UE may transmit the first SL DRX configuration to the remote UE.
  • the relay UE and remote UE can each determine the SL active time based on the first SL DRX configuration.
  • the remote UE If the remote UE is not in the RRC_CONNECTED state, the remote UE establishes a Uu RRC connection through the Relay UE for an indirect Uu RRC connection (i.e., up/downlink connection).
  • the base station uses SL mode 1 (or NR resource allocation mode) for SL transmission from the remote UE. 1, see FIG. 8) can be set.
  • the base station uses SL mode 2 (or NR resource allocation mode 2, see FIG. 8) for SL transmission of the remote UE. You can set it.
  • the remote UE can report its preferred DRX configuration to the base station through the relay UE.
  • the remote UE may report the first SL DRX configuration to the gNB through the relay UE.
  • the preferred DRX configuration may be constructed based on the first SL DRX configuration.
  • the base station can transmit DL information to the relay UE and/or remote UE.
  • the DL information may be transmitted through an RRC reconfiguration message.
  • the DL information is one of i) information about DL traffic pattern(s) for DL transmission toward the relay UE and/or remote UE and ii) information about DL DRX configuration for the relay UE and/or remote UE. Or it can include all.
  • the relay UE can monitor the PDCCH from the base station by applying DL DRX configuration.
  • information about DL traffic pattern(s) for DL transmission toward the relay UE and/or remote UE includes the repetition period of DL transmissions (e.g., frame, slot unit), transmission offset (e.g., offset from the start of the frame), information on time and/or frequency resources for each transmission (e.g., number of symbols, number of resource blocks, etc.).
  • repetition period of DL transmissions e.g., frame, slot unit
  • transmission offset e.g., offset from the start of the frame
  • time and/or frequency resources for each transmission e.g., number of symbols, number of resource blocks, etc.
  • information about DL DRX configuration may include at least one of the following information.
  • - drx-onDurationTimer Defines the duration in time of the DRX cycle.
  • - drx-SlotOffset Defines the delay before the start of drx-onDurationTimer.
  • - drx-InactivityTimer Defines the duration after the PDCCH opportunity (occasion) when the PDCCH indicates a new UL, DL or SL for the MAC entity.
  • - drx-RetransmissionTimerDL Defines the maximum period until DL retransmission is received.
  • - drx-RetransmissionTimerUL Defines the maximum period until a grant for UL retransmission is received.
  • - drx-LongCycleStartOffset Indicates a long DRX cycle and also defines the subframe in which the long and short DRX cycles start.
  • - drx-ShortCycleTimer (optional): Defines the period during which the UE should follow the short DRX cycle.
  • - drx-HARQ-RTT-TimerDL Defines the minimum period before DL assignment for HARQ retransmission expected by the MAC entity.
  • - drx-HARQ-RTT-TimerUL Defines the minimum period before the UL HARQ retransmission grant expected by the MAC entity.
  • the DL information may be provided according to at least one of the following:
  • QoS quality of service
  • PDB Packet Data Budget
  • the relay UE can relay the DL information to the remote UE.
  • the remote UE may receive the DL information from the base station directly (i.e., without relay UE) or indirectly (i.e., through relay UE).
  • the remote UE Upon receiving DL information from the base station or relay UE, the remote UE configures/sets the SL DRX configuration based on the DL information and transmits the SL DRX configuration to the relay UE.
  • the relay UE can determine the SL active time based on the SL DRX configuration to monitor sidelink control information (SCI) from the remote UE.
  • SCI sidelink control information
  • the relay UE can configure/set the SL DRX configuration based on the DL information and transmit the SL DRX configuration to the remote UE.
  • the remote UE can determine the SL active time based on the SL DRX configuration to monitor SCI from the relay UE.
  • the relay UE can receive DL information directly from the base station.
  • the DL information may include one or both of i) information about DL traffic pattern(s) for DL transmission toward the remote UE and ii) information about DL DRX configuration for DL transmission toward the remote UE.
  • the relay UE can configure/set the SL DRX configuration based on the DL information and transmit the SL DRX configuration to the remote UE.
  • the remote UE monitors SCI based on SL DRX configuration and can also monitor PDCCH.
  • the remote UE can receive DL information directly from the base station or indirectly through a relay UE.
  • the DL information is i) information about DL traffic pattern(s) for DL transmission (relayed to the remote UE and/or not relayed to the remote UE) toward the relay UE or ii) toward the relay UE (remote UE) It may include one or both of information about DL DRX configuration for DL transmission (relayed to the UE and/or not relayed to the remote UE).
  • the remote UE can configure/set the SL DRX configuration based on the DL information and transmit the SL DRX configuration to the relay UE.
  • the relay UE monitors SCI based on SL DRX configuration and can also monitor PDCCH.
  • the relay UE can receive DL information directly from the base station.
  • the DL information may include one or both of i) information about DL traffic pattern(s) for DL transmission toward the relay UE and ii) information about DL DRX configuration for DL transmission toward the relay UE.
  • the relay UE can configure/set the SL DRX configuration based on the DL information and transmit the SL DRX configuration to the remote UE.
  • the remote UE can monitor SCI based on SL DRX configuration.
  • the UE1 can receive DL information directly from the base station.
  • the DL information may include one or both of i) information about DL traffic pattern(s) for DL transmission toward UE1 or ii) information about DL DRX configuration for DL transmission toward UE1.
  • UE1 can configure/set the SL DRX configuration based on the DL information and transmit the SL DRX configuration to UE2.
  • UE2 can monitor SCI based on SL DRX configuration.
  • UE1 can receive DL information directly from the base station or indirectly from UE2.
  • the DL information is either i) information about DL traffic pattern(s) for (non-relayed) DL transmission toward UE2, or ii) information about DL DRX configuration for (non-relayed) DL transmission toward UE2.
  • UE1 can configure/set the SL DRX configuration based on the DL information and transmit the SL DRX configuration to UE2.
  • UE2 monitors SCI based on SL DRX configuration and can also monitor PDCCH.
  • Figure 9 illustrates a SL DRX setting method according to an embodiment of the present disclosure.
  • a method for performing data reception by a receiving UE may include the following steps.
  • U2N remote and U2N relay UE performs a discovery procedure and establishes a PC5-RRC connection (i.e. SL connection) using a predefined procedure (e.g., NR V2X procedure) can do. Then, the U2N remote UE can configure/set the first SL DRX configuration and send it to the U2N relay UE via a SL RRC reset message (e.g., RRCReconfigurationSidelink) for PC5-RRC connection (i.e., SL connection). , the U2N relay UE may transmit the first SL DRX configuration to the U2N remote through a SL RRC reset completion message (eg, RRCReconfigurationSidelinkComplete).
  • SL RRC reset message e.g., RRCReconfigurationSidelinkComplete
  • the U2N relay UE configures/sets the first SL DRX configuration and sends the first SL 1 SL DRX configuration can be transmitted, and the U2N remote UE can transmit an SL RRC reset completion message (e.g., RRCReconfigurationSidelinkComplete) to the U2N relay.
  • SL RRC reset completion message e.g., RRCReconfigurationSidelinkComplete
  • the U2N relay UE uses the first SL active time to determine the SL active time for monitoring SCI from the U2N remote UE for PC5-RRC connection (i.e. SL connection)
  • SL DRX configuration can be applied.
  • the U2N remote UE uses the above to determine the SL active time for monitoring SCI from the U2N relay UE for PC5-RRC connection (i.e. SL connection)
  • the 1st SL DRX configuration can be applied.
  • the U2N remote UE uses the designated PC5 channel (e.g., PC5 Relay RLC channel) setting to U2N relay.
  • a first RRC message i.e., an RRC Setup Request (RRCSetupRequest) message
  • RRCSetupRequest RRC Setup Request
  • the U2N relay UE is not in the RRC_CONNECTED state, it may need to establish its own connection when it receives a message on the designated PC5 channel (e.g., PC5 Relay RLC channel).
  • the base station may set signaling radio bearer 0 (SRB0) for relay (e.g., relaying the U2N relay RLC channel) to the U2N relay UE.
  • SRB0 signaling radio bearer 0
  • the base station can respond to the U2N Remote UE with an RRC Setup (RRCSetup) message.
  • RRCSetup RRC Setup
  • the RRC Setup (RRCSetup) message is sent to the U2N remote UE using the SRB0 relay channel through Uu (i.e., the channel between the base station and the relay UE) and the designated PC5 relay channel through PC5 (i.e., the channel between the relay UE and the remote UE). It can be.
  • the base station and U2N relay UE perform a relaying channel setup procedure through Uu (i.e., up/downlink connection with the base station).
  • Uu i.e., up/downlink connection with the base station.
  • the U2N relay/remote UE uses the PC5 channel (e.g., PC5 Relay RLC channel) to relay SRB1 towards the U2N Remote/Relay UE via PC5 (i.e., SL connection between relay UE and remote UE). ) can be established.
  • PC5 channel e.g., PC5 Relay RLC channel
  • the RRC Setup Complete (RRCSetupComplete) message can be transmitted to the base station by the U2N Remote UE through the U2N Relay UE.
  • the U2N Remote UE switches to the RRC connected state through Uu.
  • U2N Remote UE and base station set security according to Uu procedure, and security messages (i.e., SecurityModeCommand message and SecurityModeComplete message) can be transmitted through U2N Relay UE.
  • security messages i.e., SecurityModeCommand message and SecurityModeComplete message
  • the U2N Remote UE can inform the base station about the SL DRX configuration through the U2N Relay UE by transmitting a SL UE Information (SidelinkUEInformationNR) message.
  • the SL UE Information (SidelinkUEInformationNR) message includes the first SL DRX configuration using the SRB1 (or SRB2, if configured) relay channel through PC5 and the SRB1 (or SRB2, if configured) relay channel configured to the U2N Relay UE through Uu. can do.
  • the U2N Relay UE may inform the base station about the first SL DRX configuration received from the U2N Remote UE (that is, without receiving the SL UE Information (SidelinkUEInformationNR) message from the remote UE).
  • the U2N Relay UE may inform the base station about the first SL DRX configuration received from the U2N Remote UE (that is, without receiving the SL UE Information (SidelinkUEInformationNR) message from the remote UE).
  • the base station indirectly sends an RRC Reconfiguration (RRCReconfiguration) message to the U2N Remote UE through the U2N Relay UE to set SRB2 (signaling radio bearer 2)/DRB (data radio bearer) and/or DL information for relay. I can tell you.
  • the U2N Remote UE may transmit an RRC Reconfiguration Complete message to the base station through the U2N Relay UE.
  • the U2N Remote UE has a direct Uu RRC connection between the U2N remote UE and the base station in addition to the indirect Uu RRC connection with the base station through the U2N Relay UE, the U2N Remote UE responds indirectly through the U2N Relay UE or in the uplink.
  • An RRC Reconfiguration Complete (RRRCeconfigurationComplete) message may be directly transmitted to the base station.
  • the base station adds a Uu channel (e.g., Uu Relay RLC channel) between the base station and U2N Relay UE and a PC5 channel (e.g., PC5 Relay RLC channel) between U2N Relay UE and U2N Remote UE for relay traffic. You can set it.
  • Uu channel e.g., Uu Relay RLC channel
  • PC5 channel e.g., PC5 Relay RLC channel
  • the RRC Reconfiguration message may include DL information.
  • DL information includes i) information about DL traffic pattern(s) for DL transmission toward the relay UE and/or remote UE and ii) DL information for DL transmission toward the relay UE and/or remote UE. It can contain one or all of the information about DRX configuration.
  • Relay UE can apply DL DRX configuration to monitor PDCCH transmitted from the base station.
  • the DL information may be provided according to at least one of the following:
  • QoS quality of service
  • PDB Packet Data Budget
  • the base station resets the RRC to the U2N remote UE in the downlink through a direct Uu RRC connection.
  • (RRCReconfiguration) messages can also be sent directly.
  • the U2N Remote UE may transmit an RRC ReconfigurationComplete message to the base station indirectly through the U2N Relay UE or directly in the uplink in response.
  • the base station may directly transmit an RRC Reconfiguration message including DL information to the U2N Remote UE.
  • the U2N remote UE may deliver DL information to the U2N relay UE (e.g., via SL RRC Reset (RRRCeconfigurationSidelink) message).
  • the base station may directly transmit an RRC Reconfiguration message including DL information to the U2N Relay UE.
  • the relay UE may configure/set the 3rd SL DRX configuration based on DL information and transmit the 3rd SL DRX configuration to the remote UE through an SL RRC reset (RRRCeconfigurationSidelink) message.
  • RRRCeconfigurationSidelink SL RRC reset
  • the relay UE may transmit DL information to the remote UE through a SL RRC Reconfiguration (RRCReconfigurationSidelink) message.
  • the relay UE and/or remote UE may determine/configure the second SL DRX configuration and/or third SL DRX configuration based on DL information.
  • the RRC Reconfiguration message may include one or more second SL DRX configurations (eg, as a list of second SL DRX configurations). When the Relay UE receives the list, the Relay UE can select one SL DRX configuration from the list.
  • the relay UE may select one SL DRX configuration based on the PC5-RRC connection and/or U2N relay connection and/or QoS characteristics for the relay UE's DL DRX. And, the relay UE can transmit the selected SL DRX configuration to the remote UE as the third SL DRX configuration. Afterwards, the Relay UE may inform the base station about the selected SL DRX configuration through an RRC ReconfigurationComplete message or another SL UE Information (SidelinkUEInformationNR) message.
  • RRC ReconfigurationComplete message or another SL UE Information (SidelinkUEInformationNR) message.
  • the U2N remote UE configures/establishes the second SL DRX configuration based on the DL information and configures the second SL DRX configuration can be transmitted to the U2N relay UE through a SL RRC reset (RRCReconfigurationSidelink) message for PC5-RRC connection.
  • the U2N Relay UE can apply the second SL DRX configuration to determine the SL active time for monitoring SCI in the U2N Remote UE for PC5-RRC connection.
  • the U2N remote UE and U2N relay UE receive SCI from the U2N remote UE for PC5-RRC connection. You can continue to use the first SL DRX configuration for the relay UE to determine the SL active time for monitoring.
  • the U2N remote UE configures the second SL DRX configuration (i.e., not based on DL information). Configure/set, and transmit the second SL DRX configuration to the U2N relay UE through a SL RRC reset (RRCReconfigurationSidelink) message for PC5-RRC connection.
  • the U2N relay UE configures/sets the 3rd SL DRX configuration based on the DL information and sets the 3rd SL DRX configuration to PC5.
  • the U2N remote UE can apply the 3rd SL DRX configuration to determine the SL active time for monitoring SCI from the U2N Relay UE for PC5-RRC connection.
  • the U2N remote UE and U2N relay UE relay to determine the SL active time for monitoring SCI from the U2N remote UE for PC5-RRC connection.
  • the first SL DRX configuration for the UE can continue to be used.
  • the U2N relay UE configures the 3rd SL DRX configuration (not based on DL information) and configures the 3rd SL DRX configuration for PC5 RRC connection. It can be transmitted to the U2N relay UE through an SL RRC reset (RRCReconfigurationSidelink) message.
  • the remote UE and/or relay UE may determine the SL active time as follows.
  • the UE may remove the 1st SL DRX configuration and apply the 2nd SL DRX configuration or 3rd SL DRX configuration to determine the SL active time for the PC5-RRC connection. And the UE can determine the SL active time for the PC5-RRC connection based only on the 2nd SL DRX configuration or 3rd SL DRX configuration.
  • the UE may determine the SL active time for PC5-RRC connection based on i) both the 1st SL DRX configuration and the 2nd SL DRX configuration or ii) the 1st SL DRX configuration and the 3rd SL DRX configuration. You can. For example, the UE may determine the first SL active time based on the first SL DRX configuration and the second SL active time based on the second or third SL DRX configuration. Next, the UE may determine the final SL active time based on the sum of the first SL active time and the second SL active time for the PC5-RRC connection. And, the UE can inform the base station about the final SL active time.
  • the UE connects one or more different SLs to one or more other PC5-RRC connections or one or more different destinations (e.g., one or more unicast, groupcast, broadcast). It can be set with DRX configuration.
  • the remote UE can receive the second SL DRX configuration directly or indirectly from the base station. Additionally, the remote UE may receive the first and/or third SL DRX configuration from the relay UE. In this case, to receive SCI from the relay UE for the PC5-RRC connection and/or U2N relay connection, the remote UE uses the second SL DRX configuration and based on the first and/or third SL DRX configuration from the relay UE.
  • SL active time can be determined. For example, the UE may determine the first SL active time based on the first and/or third SL DRX configuration and the second SL active time based on the second SL DRX configuration. Then, the UE can determine the final SL active time based on the sum of the first SL active time and the second SL active time for the PC5-RRC connection. And, the UE can inform the base station about the final SL active time.
  • the DL information may be provided according to at least one of the following:
  • QoS quality of service
  • PDB Packet Data Budget
  • the remote UE and/or relay UE performs the second and/or relay UE in the above-described step.
  • the remote UE and/or relay UE performs the second and/or relay UE in the above-described step.
  • one or more pieces of DL information can be selected.
  • UE power can be saved when the UE performs SL transmission and/or reception, especially when the UE is configured with SL DRX and U2N relay functions.
  • Figure 10 illustrates a signaling procedure for the SL DRX configuration method according to an embodiment of the present disclosure.
  • the first UE may correspond to a relay UE
  • the second UE may correspond to a remote UE.
  • the first UE may correspond to a remote UE
  • the second UE may correspond to a relay UE.
  • signaling between the first UE and the base station may be performed through a direct link (if a direct link is established) or indirectly through the second UE.
  • the base station transmits DL information to the first UE (S1001).
  • the DL information is at least one of i) information about DL traffic patterns for the first UE and/or the second UE and ii) information about DL DRX settings for the first UE and/or the second UE. It can contain one.
  • information about DL traffic pattern(s) for DL transmission for the first UE and/or the second UE includes the repetition period of DL transmissions (e.g., frame, slot unit), transmission offset (e.g. For example, offset from the start of the frame), information on time and/or frequency resources for each transmission (e.g., number of symbols, number of resource blocks, etc.).
  • repetition period of DL transmissions e.g., frame, slot unit
  • transmission offset e.g. For example, offset from the start of the frame
  • time and/or frequency resources for each transmission e.g., number of symbols, number of resource blocks, etc.
  • information about DL DRX configuration for DL transmission for the first UE and/or the second UE may include at least one of the following information.
  • - drx-InactivityTimer Duration after the PDCCH opportunity when the PDCCH indicates a new UL, DL or SL for the MAC entity.
  • the DL information may be provided according to at least one of the following:
  • QoS quality of service
  • PDB Packet Data Budget
  • the DL information may be provided through a radio resource control (RRC) reset message.
  • RRC radio resource control
  • the RRC reset message may include a list of one or more SL DRX settings.
  • the first UE determines (creates or configures) SL DRX settings based on DL information (S1002).
  • the SL DRX setting can be determined by selecting from within the list.
  • the first UE may transmit information about the determined SL DRX settings to the second UE (S1004).
  • the first UE may transmit information about the determined SL DRX settings to the third UE rather than the second UE.
  • information about SL DRX settings may include at least one of the following information.
  • - sl-drx-InactivityTimer (excluding broadcast transmissions): Duration after receiving the first slot of the SCI (i.e. phase 1 SCI and phase 2 SCI) indicating new SL transmission for the MAC entity.
  • the second UE may determine the SL active time for monitoring SCI from the first UE based on the received SL DRX configuration (S1005).
  • the third UE receives information about the SL DRX settings from the first UE based on the received SL DRX settings.
  • SL active time for monitoring SCI may also be determined.
  • SL active time may be determined to include at least one of the following times.
  • the second UE if the second UE has a previous SL DRX configuration received from the first UE, the second UE removes the previous SL DRX configuration received from the first UE, and the SL active time is received in step S1004. You can make decisions based only on one SL DRX setting.
  • the second UE determines the first SL active time from the previous SL DRX configuration received from the first UE, and in step S1004
  • the 2nd SL active time is determined based on the received SL DRX settings, and the final SL active time may be determined as the sum of the 1st SL active time and the 2nd SL active time.
  • the first UE may additionally transmit information about the determined SL DRX settings to the base station (S1003).
  • the first UE may transmit information about the determined SL DRX setting to the base station through an RRC reset complete message in response to the RRC reset message.
  • Figure 11 is a diagram illustrating the operation of a UE for the SL DRX configuration method according to an embodiment of the present disclosure.
  • Figure 11 illustrates the operation of the UE based on the previously proposed method.
  • the example in FIG. 11 is for convenience of explanation and does not limit the scope of the present disclosure. Some step(s) illustrated in FIG. 11 may be omitted depending on the situation and/or setting.
  • the UE in FIG. 11 is only an example and may be implemented as a device illustrated in FIG. 13 below.
  • the processors 102/202 of FIG. 13 can control transmission and reception of channels/signals/data/information, etc. using the transceivers 106/206.
  • the processor 102/202 of FIG. 13 can control channels/signals/data/information to be transmitted to be stored in the memory 104/204, and stores the received channels/signals/data/information, etc. It can also be controlled to store in the memory 104/204.
  • the first UE may correspond to a relay UE, and the second UE may correspond to a remote UE. Or, conversely, the first UE may correspond to a remote UE, and the second UE may correspond to a relay UE.
  • the first UE receives DL information from the base station or from (via) the second UE (S1101).
  • the DL information is at least one of i) information about DL traffic patterns for the first UE and/or the second UE and ii) information about DL DRX settings for the first UE and/or the second UE. It can contain one.
  • information about DL traffic pattern(s) for DL transmission for the first UE and/or the second UE includes the repetition period of DL transmissions (e.g., frame, slot unit), transmission offset (e.g. For example, offset from the start of the frame), information on time and/or frequency resources for each transmission (e.g., number of symbols, number of resource blocks, etc.).
  • repetition period of DL transmissions e.g., frame, slot unit
  • transmission offset e.g. For example, offset from the start of the frame
  • time and/or frequency resources for each transmission e.g., number of symbols, number of resource blocks, etc.
  • information about DL DRX configuration for DL transmission for the first UE and/or the second UE may include at least one of the following information.
  • - drx-InactivityTimer Duration after the PDCCH opportunity when the PDCCH indicates a new UL, DL or SL for the MAC entity.
  • the DL information may be provided according to at least one of the following:
  • QoS quality of service
  • PDB Packet Data Budget
  • the DL information may be provided through a radio resource control (RRC) reset message.
  • RRC radio resource control
  • the RRC reset message may include a list of one or more SL DRX settings.
  • the first UE determines (creates or configures) SL DRX settings based on DL information (S1102).
  • the SL DRX setting can be determined by selecting from within the list.
  • the first UE transmits information about the determined SL DRX settings to the second UE and/or the third UE (S1103).
  • information about SL DRX settings may include at least one of the following information.
  • - sl-drx-InactivityTimer (excluding broadcast transmissions): Duration after receiving the first slot of the SCI (i.e. phase 1 SCI and phase 2 SCI) indicating new SL transmission for the MAC entity.
  • the first UE may additionally transmit information about the determined SL DRX settings to the base station. For example, when the DL information is provided through an RRC reset message, the first UE may transmit information about the determined SL DRX setting to the base station through an RRC reset complete message in response to the RRC reset message.
  • Figure 12 is a diagram illustrating the operation of a UE for the SL DRX configuration method according to an embodiment of the present disclosure.
  • Figure 12 illustrates the operation of the UE based on the previously proposed method.
  • the example in FIG. 12 is for convenience of explanation and does not limit the scope of the present disclosure. Some step(s) illustrated in FIG. 12 may be omitted depending on the situation and/or setting.
  • the UE in FIG. 12 is only an example and may be implemented as a device illustrated in FIG. 13 below.
  • the processors 102/202 of FIG. 13 can control transmission and reception of channels/signals/data/information, etc. using the transceivers 106/206.
  • the processor 102/202 of FIG. 13 can control channels/signals/data/information to be transmitted to be stored in the memory 104/204, and stores the received channels/signals/data/information, etc. It can also be controlled to store in the memory 104/204.
  • the first UE may correspond to a relay UE, and the second UE may correspond to a remote UE. Or, conversely, the first UE may correspond to a remote UE, and the second UE may correspond to a relay UE.
  • the first UE receives information about SL DRX settings from the second UE (S1201).
  • information about SL DRX settings may include at least one of the following information.
  • - sl-drx-InactivityTimer (excluding broadcast transmissions): Duration after receiving the first slot of the SCI (i.e. phase 1 SCI and phase 2 SCI) indicating new SL transmission for the MAC entity.
  • the SL DRX setting may be determined (generated or configured) based on DL information provided from the base station.
  • the DL information is at least one of i) information about DL traffic patterns for the first UE and/or the second UE and ii) information about DL DRX settings for the first UE and/or the second UE. It can contain one.
  • information about DL traffic pattern(s) for DL transmission for the first UE and/or the second UE includes the repetition period of DL transmissions (e.g., frame, slot unit), transmission offset (e.g. For example, offset from the start of the frame), information on time and/or frequency resources for each transmission (e.g., number of symbols, number of resource blocks, etc.).
  • repetition period of DL transmissions e.g., frame, slot unit
  • transmission offset e.g. For example, offset from the start of the frame
  • time and/or frequency resources for each transmission e.g., number of symbols, number of resource blocks, etc.
  • information about DL DRX configuration for DL transmission for the first UE and/or the second UE may include at least one of the following information.
  • - drx-InactivityTimer Duration after the PDCCH opportunity when the PDCCH indicates a new UL, DL or SL for the MAC entity.
  • the DL information may be provided according to at least one of the following:
  • QoS quality of service
  • PDB Packet Data Budget
  • the first UE determines the SL active time for monitoring SCI from the second UE based on the received SL DRX configuration (S1202).
  • SL active time may be determined to include at least one of the following times.
  • the first UE removes the previous SL DRX configuration received from the second UE, and the SL active time is received in step S1201. You can make decisions based only on one SL DRX setting.
  • the first UE determines the first SL active time from the previous SL DRX configuration received from the second UE, and in step S1201
  • the 2nd SL active time is determined based on the received SL DRX settings, and the final SL active time may be determined as the sum of the 1st SL active time and the 2nd SL active time.
  • Figure 13 illustrates a block diagram of a wireless communication device according to an embodiment of 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, NR).
  • various wireless access technologies eg, LTE, NR.
  • the first wireless device 100 includes one or more processors 102 and one or more memories 104, and may additionally include one or more transceivers 106 and/or one or more antennas 108.
  • Processor 102 controls memory 104 and/or transceiver 106 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in this disclosure.
  • the processor 102 may process information in the memory 104 to generate first information/signal and then transmit a wireless signal including the first information/signal through the transceiver 106.
  • the processor 102 may receive a wireless signal including the second information/signal through the transceiver 106 and then store information obtained from 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. For example, memory 104 may perform some or all of the processes controlled by processor 102 or instructions for performing the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in this disclosure. Software code containing them can be stored.
  • the processor 102 and memory 104 may be part of a communication modem/circuit/chip designed to implement wireless communication technology (eg, LTE, NR).
  • Transceiver 106 may be coupled to processor 102 and may transmit and/or receive wireless signals via one or more antennas 108. Transceiver 106 may include a transmitter and/or receiver. The transceiver 106 can be used interchangeably with an RF (Radio Frequency) unit.
  • a 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.
  • Processor 202 controls memory 204 and/or transceiver 206 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in this disclosure.
  • the processor 202 may process the 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 a wireless signal including the fourth information/signal through the transceiver 206 and then store information obtained from 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. For example, memory 204 may perform some or all of the processes controlled by processor 202 or instructions for performing the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed in this disclosure. Software code containing them can be stored.
  • the processor 202 and memory 204 may be part of a communication modem/circuit/chip designed to implement wireless communication technology (eg, LTE, NR).
  • Transceiver 206 may be coupled to processor 202 and may transmit and/or receive wireless signals via one or more antennas 208. Transceiver 206 may include a transmitter and/or receiver. Transceiver 206 may be used interchangeably with an RF unit.
  • a wireless device may mean a communication modem/circuit/chip.
  • one or more protocol layers may be implemented by one or more processors 102, 202.
  • one or more processors 102, 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP).
  • One or more processors 102, 202 may generate 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 in this disclosure. can be created.
  • PDUs Protocol Data Units
  • SDUs Service Data Units
  • 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 in this disclosure.
  • One or more processors 102, 202 may process signals (e.g., baseband signals) containing PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and/or methods disclosed in this disclosure. It can be generated and provided to one or more transceivers (106, 206).
  • One or more processors 102, 202 may receive signals (e.g., baseband signals) from one or more transceivers 106, 206 and may use the descriptions, functions, procedures, suggestions, methods, and/or methods disclosed in this disclosure.
  • PDU, SDU, message, control information, data or information can be obtained according to the operation flow charts.
  • One or more processors 102, 202 may be referred to as a controller, microcontroller, microprocessor, or microcomputer.
  • One or more processors 102, 202 may 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
  • the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in this disclosure may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc.
  • Firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed in this disclosure may be included in one or more processors (102, 202) or stored in one or more memories (104, 204). It may be driven by the above processors 102 and 202.
  • the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed in this disclosure may be implemented using firmware or software in the form of codes, instructions, and/or sets of instructions.
  • One or more memories 104, 204 may be connected to one or more processors 102, 202 and may store various types of data, signals, messages, information, programs, codes, instructions, and/or instructions.
  • One or more memories 104, 204 may consist of ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer readable storage media, and/or combinations thereof.
  • One or more memories 104, 204 may be located internal to and/or external to one or more processors 102, 202. Additionally, one or more memories 104, 204 may be connected to one or more processors 102, 202 through various technologies, such as wired or wireless connections.
  • One or more transceivers 106 and 206 may transmit user data, control information, wireless signals/channels, etc. mentioned in the methods and/or operation flowcharts of the present disclosure to one or more other devices.
  • One or more transceivers 106, 206 may receive user data, control information, wireless signals/channels, etc. referred to in the descriptions, functions, procedures, suggestions, methods and/or operational flow charts, etc. disclosed in this disclosure from one or more other devices. there is.
  • one or more transceivers 106 and 206 may be connected to one or more processors 102 and 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. Additionally, 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. In addition, one or more transceivers (106, 206) may be connected to one or more antennas (108, 208), and one or more transceivers (106, 206) may be connected to the one or more antennas (108, 208) according to the description and functions disclosed in the present disclosure. , may be set to transmit and receive user data, control information, wireless signals/channels, etc.
  • the one or more antennas may be a plurality of physical antennas or a plurality of logical antennas (eg, antenna ports).
  • One or more transceivers (106, 206) process the received user data, control information, wireless signals/channels, etc. using one or more processors (102, 202), and convert the received wireless signals/channels, etc. from the RF band signal. It can be converted to a baseband signal.
  • One or more transceivers (106, 206) may convert user data, control information, wireless signals/channels, etc. processed using one or more processors (102, 202) from baseband signals to RF band signals.
  • one or more transceivers 106, 206 may comprise (analog) oscillators and/or filters.
  • the scope of the present disclosure is software or machine-executable instructions (e.g., operating system, application, firmware, program, etc.) that cause operations according to the methods of various embodiments to be executed on a device or computer, and such software or It includes non-transitory computer-readable medium in which instructions, etc. are stored and can be executed on a device or computer. Instructions that may be used to program a processing system to perform the features described in this disclosure may be stored on/in a storage medium or computer-readable storage medium and may be viewed using a computer program product including such storage medium. Features described in the disclosure may be implemented.
  • Storage media may include, but are not limited to, high-speed random access memory such as DRAM, SRAM, DDR RAM, or other random access solid state memory devices, one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or It may include non-volatile memory, such as other non-volatile solid state storage devices.
  • Memory optionally includes one or more storage devices located remotely from the processor(s).
  • the memory, or alternatively the non-volatile memory device(s) within the memory includes a non-transitory computer-readable storage medium.
  • Features described in this disclosure may be stored on any one of a machine-readable medium to control the hardware of a processing system and to enable the processing system to interact with other mechanisms utilizing results according to embodiments of the present disclosure. May be integrated into software and/or firmware.
  • Such software or firmware may include, but is not limited to, application code, device drivers, operating systems, and execution environments/containers.
  • the wireless communication technology implemented in the wireless devices 100 and 200 of the present disclosure may include Narrowband Internet of Things for low-power communication as well as LTE, NR, and 6G.
  • NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology and may be implemented in standards such as LTE Cat NB1 and/or LTE Cat NB2, and is limited to the above-mentioned names. no.
  • the wireless communication technology implemented in the wireless device (XXX, YYY) of the present disclosure may perform communication based on LTE-M technology.
  • LTE-M technology may be an example of LPWAN technology, and may be called various names such as enhanced Machine Type Communication (eMTC).
  • eMTC enhanced Machine Type Communication
  • LTE-M technologies include 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine. It can be implemented in at least one of various standards such as Type Communication, and/or 7) LTE M, and is not limited to the above-mentioned names.
  • the wireless communication technology implemented in the wireless device (XXX, YYY) of the present disclosure may include at least ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) considering low-power communication. It may include any one, and is not limited to the above-mentioned names.
  • ZigBee technology can create personal area networks (PAN) related to small/low-power digital communications based on various standards such as IEEE 802.15.4, and can be called by various names.

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Abstract

Sont divulgués un procédé et un dispositif de configuration d'une réception discontinue en liaison latérale dans un système de communication sans fil. Selon un mode de réalisation de la présente divulgation, un procédé exécuté par un premier UE peut comprendre les étapes consistant à : recevoir des informations de DL provenant d'une station de base ou d'un second UE, les informations de DL contenant i) des informations concernant des modèles de trafic en DL associés au premier ou au second UE et/ou ii) des informations concernant une configuration de DRX en DL associée au premier ou au second UE ; sur la base des informations de DL, déterminer une configuration de DRX en SL ; et transmettre des informations concernant la configuration de DRX en SL.
PCT/KR2023/007517 2022-06-03 2023-06-01 Procédé et dispositif de configuration d'une réception discontinue en liaison latérale dans un système de communication sans fil Ceased WO2023234726A1 (fr)

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ERICSSON: "Summary of [709][V2X/SL] SL DRX and L2 relay in Rel-17 (Ericsson)", 3GPP TSG-RAN WG2 #118-E, R2-2206305, 27 May 2022 (2022-05-27), XP052156363 *

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