Methods and apparatus for transmitting information related to a slot pattern in nr v2x

Abstract

A method of operation of a first apparatus (100) in a wireless communication system is proposed. The method can comprise the steps of receiving, from a base station (300), TDD-UL-DL configuration information comprising information related to a first slot pattern and information related to a second slot pattern; determining a value related to a granularity based on i) a periodicity of the first slot pattern, ii) a periodicity of the second slot pattern, and iii) a first subcarrier spacing related to SL communication; and transmitting, to a second apparatus (200), a physical sidelink broadcast channel (PSBCH) comprising information related to a first UL resource and information related to a second UL resource.

Description

Technical Field

[0001] This disclosure relates to wireless communication systems. Background Technology

[0002] Secondary Link (SL) communication is a communication scheme that establishes a direct link between User Equipments (UEs) and allows UEs to directly exchange voice and data without the intervention of Evolved Node Bs (eNBs). SL communication is being considered as a solution to the eNB overhead caused by the rapid growth of data traffic.

[0003] V2X (Vehicle-to-Everything) refers to a communication technology used by vehicles to exchange information with other vehicles, pedestrians, and objects equipped with infrastructure. V2X can be divided into four types: V2V (Vehicle-to-Vehicle), V2I (Vehicle-to-Infrastructure), V2N (Vehicle-to-Network), and V2P (Vehicle-to-Pedestrian). V2X communication can be provided through PC5 interfaces and / or Uu interfaces.

[0004] Furthermore, the increasing demand for larger communication capacity from various communication devices has led to a growing need for enhanced mobile broadband communications compared to traditional radio access technologies (RATs). Consequently, the design of communication systems for UEs or services sensitive to reliability and latency is under discussion. Next-generation radio access technologies based on enhanced mobile broadband communications, massive machine-type communications (MTC), and ultra-reliable low latency communications (URLLC) can be termed novel RATs or NRs (new radio technologies). In this paper, NR can also support vehicle-to-everything (V2X) communications.

[0005] Figure 1 This is a diagram used to describe NR-based V2X communication compared to the RAT-based V2X communication previously used. Figure 1 The implementation methods can be combined with various implementation methods of this disclosure.

[0006] Regarding V2X communication, when discussing the RAT used before NR, the focus was on schemes that provided security services based on V2X messages such as BSM (Basic Security Message), CAM (Cooperation Awareness Message), and DENM (Distributed Environment Notification Message). V2X messages can include location information, dynamic information, attribute information, etc. For example, a UE can send periodic message type CAM and / or event-triggered message type DENM to another UE.

[0007] For example, a CAM can include basic vehicle information, such as dynamic vehicle status information like direction and speed, and static vehicle data like dimensions, external lighting conditions, and route details. For example, a UE can broadcast a CAM, and the CAM latency can be less than 100ms. For example, in the event of an unexpected situation such as a vehicle malfunction or accident, a UE can generate a DENM and send it to another UE. For example, all vehicles within the UE's transmission range can receive the CAM and / or DENM. In this case, the DENM can have a higher priority than the CAM.

[0008] Subsequently, various V2X scenarios were proposed in NR regarding V2X communication. These scenarios could include vehicle platooning, advanced driver assistance, extended sensors, and remote driving.

[0009] For example, based on vehicle platooning, vehicles can be dynamically grouped and moved together. For instance, to perform platooning operations, vehicles belonging to a group can receive periodic data from the leading vehicle. For example, vehicles in the group can use periodic data to decrease or increase the distance between them.

[0010] For example, based on improved driving, vehicles can be semi-autonomous or fully autonomous. For instance, each vehicle can adjust its trajectory or maneuvers based on data obtained from local sensors of nearby vehicles and / or nearby logical entities. Additionally, for example, each vehicle can share driving intentions with neighboring vehicles.

[0011] For example, based on extended sensors, raw or processed data or real-time video data acquired through local sensors can be exchanged between vehicles, logical entities, pedestrian terminals, and / or V2X application servers. For instance, a vehicle can identify an improved environment compared to one that could be detected using its own sensors.

[0012] For example, based on remote driving, a remote driver or V2X application can operate or control a remote vehicle for a person who cannot drive in a hazardous environment or for a remote vehicle. For instance, cloud-based driving can be used to operate or control a remote vehicle when routes can be predicted, such as in public transportation. Additionally, access to a cloud-based backend service platform can be considered for remote driving, for example.

[0013] Furthermore, in NR-based V2X communication, methods for specifying service requirements for various V2X scenarios such as vehicle platooning, advanced driving, extended sensors, and remote driving are discussed. Summary of the Invention

[0014] Technical solution

[0015] According to an embodiment, a method for operating a first device 100 in a wireless communication system is proposed. The method may include the following steps: receiving TDD-UL-DL configuration information from a base station 300, including information related to a first time slot pattern and information related to a second time slot pattern; determining a granularity-related value based on i) the period of the first time slot pattern, ii) the period of the second time slot pattern, and iii) a first subcarrier spacing (SCS) related to SL communication; and transmitting a Physical Sublink Broadcast Channel (PSBCH) to a second device 200, including information related to a first UL resource and information related to a second UL resource.

[0016] The effect of this disclosure

[0017] User equipment (UE) can perform SL communication efficiently. Attached Figure Description

[0018] Figure 1 This is a diagram used to describe NR-based V2X communication compared to the RAT-based V2X communication previously used.

[0019] Figure 2 The structure of an NR system according to an embodiment of the present disclosure is shown.

[0020] Figure 3 A radio protocol architecture according to an embodiment of this disclosure is shown.

[0021] Figure 4 The structure of an NR radio frame according to an embodiment of the present disclosure is shown.

[0022] Figure 5 The structure of a time slot for an NR frame according to an embodiment of the present disclosure is shown.

[0023] Figure 6 An example of a BWP according to an embodiment of this disclosure is shown.

[0024] Figure 7 A UE performing V2X or SL communication according to an embodiment of this disclosure is shown.

[0025] Figure 8 The process of a UE performing V2X or SL communication based on a transmission mode according to an embodiment of the present disclosure is illustrated.

[0026] Figure 9 Three broadcast types according to embodiments of this disclosure are shown.

[0027] Figure 10 The DL time slots, DL symbols, UL time slots, and UL symbols allocated within the DL / UL time period according to embodiments of the present disclosure are shown.

[0028] Figure 11 The diagram illustrates a UL time slot included in a pattern time period configured according to a TDD-UL-DL according to an embodiment of the present disclosure.

[0029] Figure 12 The process of a transmitting UE sending a PSBCH to a receiving UE according to an embodiment of the present disclosure is illustrated.

[0030] Figure 13 The process of a first device performing wireless communication according to an embodiment of the present disclosure is illustrated.

[0031] Figure 14 The process of a second device performing wireless communication according to an embodiment of the present disclosure is illustrated.

[0032] Figure 15 A communication system 1 according to an embodiment of the present disclosure is shown.

[0033] Figure 16 A wireless device according to an embodiment of the present disclosure is shown.

[0034] Figure 17 A signal processing circuit for transmitting signals according to an embodiment of the present disclosure is shown.

[0035] Figure 18 Another example of a wireless device according to an embodiment of the present disclosure is shown.

[0036] Figure 19 A handheld device according to an embodiment of the present disclosure is shown.

[0037] Figure 20 A vehicle or autonomous vehicle according to an embodiment of this disclosure is shown. Detailed Implementation

[0038] In this disclosure, "A or B" may mean "A only", "B only", or "both A and B". In other words, in this disclosure, "A or B" can be interpreted as "A and / or B". For example, in this disclosure, "A, B or C" may mean "A only", "B only", "C only", or "any combination of A, B, and C".

[0039] The forward slash ( / ) or comma used in this disclosure can mean "and / or". For example, "A / B" can mean "A and / or B". Therefore, "A / B" can mean "A only", "B only", or "both A and B". For example, "A, B, C" can mean "A, B, or C".

[0040] In this disclosure, "at least one of A and B" may mean "only A", "only B" or "both A and B". Furthermore, in this disclosure, the expression "at least one of A or B" or "at least one of A and / or B" may be interpreted as "at least one of A and B".

[0041] Additionally, in this disclosure, "at least one of A, B, and C" may mean "A only", "B only", "C only" or "any combination of A, B, and C". Furthermore, "at least one of A, B, or C" or "at least one of A, B, and / or C" may mean "at least one of A, B, and C".

[0042] Additionally, the brackets used in this disclosure may mean "for example". Specifically, when indicated as "Control Message (PDCCH)", this may mean that "PDCCH" is cited as an example of "Control Message". In other words, "Control Message" in this disclosure is not limited to "PDCCH", and "PDDCH" may be cited as an example of "Control Message". Specifically, when indicated as "Control Message (i.e., PDCCH)", this may also mean that "PDCCH" is cited as an example of "Control Message".

[0043] The technical features described in one of the accompanying drawings in this disclosure can be implemented individually or simultaneously.

[0044] The technologies described below can be used in various wireless communication systems such as Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Orthogonal Frequency Division Multiple Access (OFDMA), and Single Carrier Frequency Division Multiple Access (SC-FDMA). CDMA can be implemented using radio technologies such as Universal Terrestrial Radio Access (UTRA) or CDMA-2000. TDMA can be implemented using radio technologies such as Global System for Mobile Communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rate GSM Evolution (EDGE). OFDMA can be implemented using radio technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, and Evolved UTRA (E-UTRA). IEEE 802.16m is an evolution of IEEE 802.16e and provides backward compatibility with IEEE 802.16e-based systems. UTRA is part of the Universal Mobile Telecommunications System (UMTS). The 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is part of the Evolved UMTS (E-UMTS) using E-UTRA. 3GPP LTE uses OFDMA in the downlink and SC-FDMA in the uplink. LTE-Advanced (LTE-A) is an evolution of LTE.

[0045] 5G NR is the successor technology to LTE-A, which is a new type of mobile communication system with high performance, low latency, and high availability. 5G NR can use all available spectrum resources, including low-frequency bands below 1 GHz, mid-frequency bands from 1 GHz to 10 GHz, and high-frequency bands above 24 GHz (millimeter waves).

[0046] For clarity, the following description will focus primarily on LTE-A or 5G NR. However, the technical features of embodiments according to this disclosure are not limited thereto.

[0047] Figure 2 The structure of an NR system according to an embodiment of this disclosure is shown. Figure 2 The implementation methods can be combined with various implementation methods of this disclosure.

[0048] Reference Figure 2The Next Generation Radio Access Network (NG-RAN) may include a BS 20 that provides user plane and control plane protocol termination to UE 10. For example, BS 20 may include a Next Generation Node B (gNB) and / or an Evolved Node B (eNB). For example, UE 10 may be fixed or mobile and may be referred to by other terms such as mobile station (MS), user terminal (UT), subscriber station (SS), mobile terminal (MT), radio device, etc. For example, BS may be referred to as a fixed station communicating with UE 10 and may be referred to by other terms such as base transceiver system (BTS), access point (AP), etc.

[0049] Figure 2 The implementation example illustrates the case involving only the gNB. BS 20 can interconnect via the Xn interface. BS 20 can interconnect via the fifth-generation (5G) core network (5GC) and the NG interface. More specifically, BS 20 can connect to the Access and Mobility Management Function (AMF) 30 via the NG-C interface and can connect to the User Plane Function (UPF) 30 via the NG-U interface.

[0050] The radio interface protocol layer between the UE and the network can be classified into Layer 1 (L1), Layer 2 (L2), and Layer 3 (L3) based on the well-known Open Systems Interconnection (OSI) model in communication systems. The Physical (PHY) layer, belonging to Layer 1, provides information transmission services using physical channels, while the Radio Resource Control (RRC) layer, located in Layer 3, controls the radio resources between the UE and the network. For this purpose, the RRC layer exchanges RRC messages between the UE and the BS layer.

[0051] Figure 3 A radio protocol architecture based on an embodiment of this disclosure is shown. Figure 3 The implementation methods can be combined with various implementation methods of this disclosure. Specifically, Figure 3 (a) shows the radio protocol stack for the user plane used for Uu communication, and Figure 3 (b) shows the radio protocol stack for the control plane used for Uu communication. Figure 3 (c) shows the radio protocol stack for the user plane used for SL communication, and Figure 3 (d) in the diagram shows the radio protocol stack for the control plane used for SL communication.

[0052] Reference Figure 3The physical layer provides information transmission services to the upper layers through physical channels. The physical layer connects to the Media Access Control (MAC) layer, which is the upper layer, through transport channels. Data is transmitted between the MAC layer and the physical layer via transport channels. Transport channels are classified according to how data is transmitted through the radio interface and what characteristics of the data are transmitted.

[0053] Data is transmitted between different physical layers (i.e., the PHY layer of the transmitter and the PHY layer of the receiver) via a physical channel. The physical channel can be modulated using an orthogonal frequency division multiplexing (OFDM) scheme, and the physical channel uses time and frequency as radio resources.

[0054] The MAC layer provides services to the Radio Link Control (RLC) layer, which is higher than the MAC layer, via logical channels. The MAC layer provides the ability to map multiple logical channels to multiple transport channels. The MAC layer also provides logical channel multiplexing by mapping multiple logical channels to a single transport channel. The MAC layer provides data transmission services through logical channels.

[0055] The RLC layer performs concatenation, segmentation, and reassembly of Radio Link Control Service Data Units (RLC SDUs). To ensure the different Quality of Service (QoS) required by the Radio Bearer (RB), the RLC layer provides three types of operating modes: Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode (AM). AM RLC provides error correction through Automatic Repeat Request (ARQ).

[0056] The Radio Resource Control (RRC) layer is defined only in the control plane. The RRC layer is used to control the configuration, reconfiguration, and release of logical, transport, and physical channels associated with RBs. RBs are logical paths for data transmission between the UE and the network, provided by Layer 1 (i.e., the Physical Layer or PHY Layer) and Layer 2 (i.e., the MAC Layer, RLC Layer, Packet Data Convergence Protocol (PDCP) Layer, and Serving Data Adaptation Protocol (SDAP) Layer).

[0057] The Packet Data Convergence Protocol (PDCP) in the user plane performs functions including user data transmission, header compression, and encryption. The Packet Data Convergence Protocol (PDCP) in the control plane performs functions including control plane data transmission and encryption / integrity protection.

[0058] The Service Data Adaptation Protocol (SDAP) layer is defined only in the user plane. The SDAP layer performs the mapping between Quality of Service (QoS) streams and Data Radio Bearers (DRBs), as well as the QoS Stream ID (QFI) tagging in both DL and UL packets.

[0059] The configuration of an Radio Bearer (RB) refers to the processing used to specify the radio protocol layer and channel attributes to provide specific services, as well as to determine the corresponding detailed parameters and operating methods. RBs can then be classified into two types: Signaling Radio Bearers (SRBs) and Data Radio Bearers (DRBs). SRBs are used as paths for transmitting RRC messages in the control plane, while DRBs are used as paths for transmitting user data in the user plane.

[0060] When an RRC connection is established between the UE's RRC layer and the E-UTRAN's RRC layer, the UE is in the RRC connected (RRC_CONNECTED) state; otherwise, the UE can be in the RRC idle (RRC_IDLE) state. In the NR case, an additional RRC inactive (RRC_INACTIVE) state is defined, and a UE in the RRC_INACTIVE state can maintain its connection with the core network while releasing its connection with the BS.

[0061] The downlink transport channels for sending (or transmitting) data from the network to the UE include the Broadcast Channel (BCH) for transmitting system information and the Shared Downlink Channel (SCH) for transmitting other user service or control messages. Service or control messages for downlink multicast or broadcast services can be sent via the downlink SCH or via a separate downlink multicast channel (MCH). Furthermore, the uplink transport channels for sending (or transmitting) data from the UE to the network include the Random Access Channel (RACH) for transmitting initial control messages and the Shared Uplink Channel (SCH) for transmitting other user service or control messages.

[0062] Examples of logical channels that belong to a higher layer than the transport channel and are mapped to the transport channel may include the Broadcast Control Channel (BCCH), Paging Control Channel (PCCH), Common Control Channel (CCCH), Multicast Control Channel (MCCH), Multicast Service Channel (MTCH), etc.

[0063] Figure 4 The structure of an NR radio frame according to an embodiment of the present disclosure is shown. Figure 4 The implementation methods can be combined with various implementation methods of this disclosure.

[0064] Reference Figure 4 In NR, radio frames can be used to perform uplink and downlink transmissions. A radio frame is 10 ms long and can be defined as consisting of two half-frames (HF). A half-frame can include five 1 ms subframes (SF). A subframe (SF) can be divided into one or more time slots, and the number of time slots within a subframe can be determined according to the subcarrier spacing (SCS). Each time slot can include 12 or 14 OFDM(A) symbols depending on the cyclic prefix (CP).

[0065] With normal CP, each time slot can include 14 symbols. With extended CP, each time slot can include 12 symbols. In this paper, symbols can include OFDM symbols (or CP-OFDM symbols) and single-carrier-FDMA (SC-FDMA) symbols (or Discrete Fourier Transform Extended OFDM (DFT-s-OFDM) symbols).

[0066] Table 1 below illustrates the number of time slots (N) per symbol based on the SCS setting (μ) under normal CP conditions. slot symb ), Number of time slots per frame (N) frame,μ slot ) and the number of time slots per subframe (N) subframe,μ slot ).

[0067] [Table 1]

[0068] <![CDATA[SCS(15*2 μ )]]> <![CDATA[N slot symb ]]> <![CDATA[N frame,μ slot ]]> <![CDATA[N subframe,μ slot ]]> 15kHz (μ=0) 14 10 1 30kHz (μ=1) 14 20 2 60kHz (μ=2) 14 40 4 120kHz (μ=3) 14 80 8 240kHz (μ=4) 14 160 16

[0069] Table 2 shows examples of the number of symbols per slot, the number of slots per frame, and the number of slots per subframe, based on SCS, when using extended CP.

[0070] [Table 2]

[0071] <![CDATA[SCS(15*2 μ )]]> <![CDATA[N slot symb ]]> <![CDATA[N frame,μ slot ]]> <![CDATA[N subframe,μ slot ]]> 60kHz (μ=2) 12 40 4

[0072] In NR systems, the OFDM(A) parameter sets (e.g., SCS, CP length, etc.) of multiple cells integrated into a UE can be configured differently. Therefore, the (absolute time) duration (or interval) of time resources (e.g., subframes, slots, or TTIs) consisting of the same number of symbols (collectively referred to as time units (TUs) for simplicity) can be configured differently in the integrated cells.

[0073] In NR, multiple parameter sets or SCSs can be supported to support various 5G services. For example, with an SCS of 15kHz, a wide range of traditional cellular bands can be supported, while with an SCS of 30kHz / 60kHz, dense urban areas, lower latency, and wider carrier bandwidth can be supported. With an SCS of 60kHz or higher, bandwidths greater than 24.25GHz can be used to overcome phase noise.

[0074] NR bands can be defined as two different types of frequency ranges. These two different types of frequency ranges can be FR1 and FR2. The values ​​of the frequency ranges can be changed (or varied), for example, the two different types of frequency ranges can be as shown in Table 3 below. In the frequency ranges used in NR systems, FR1 can mean "the range below 6 GHz," and FR2 can mean "the range above 6 GHz," and can also be referred to as millimeter wave (mmW).

[0075] [Table 3]

[0076] Frequency range specification Corresponding frequency range Subcarrier spacing (SCS) FR1 450MHz–6000MHz 15, 30, 60kHz FR2 24250MHz–52600MHz 60, 120, 240kHz

[0077] As mentioned above, the frequency range values ​​in an NR system can be changed (or varied). For example, as shown in Table 4 below, FR1 can include a bandwidth ranging from 410 MHz to 7125 MHz. More specifically, FR1 can include frequency bands of 6 GHz (or 5850, 5900, 5925 MHz, etc.) and higher. For example, the frequency bands of 6 GHz (or 5850, 5900, 5925 MHz, etc.) and higher included in FR1 can include unlicensed frequency bands. Unlicensed frequency bands can be used for various purposes; for example, unlicensed frequency bands can be used for vehicle-specific communications (e.g., autonomous driving).

[0078] [Table 4]

[0079] Frequency range specification Corresponding frequency range Subcarrier spacing (SCS) FR1 410MHz–7125MHz 15, 30, 60kHz FR2 24250MHz–52600MHz 60, 120, 240kHz

[0080] Figure 5 The structure of a time slot for an NR frame according to an embodiment of this disclosure is shown. Figure 5 The implementation methods can be combined with various implementation methods of this disclosure.

[0081] Reference Figure 5 A time slot comprises multiple symbols in the time domain. For example, in normal CP, a time slot may include 14 symbols. In extended CP, a time slot may include 12 symbols. Alternatively, in normal CP, a time slot may include 7 symbols. However, in extended CP, a time slot may include 6 symbols.

[0082] A carrier comprises multiple subcarriers in the frequency domain. A resource block (RB) can be defined as multiple consecutive subcarriers in the frequency domain (e.g., 12 subcarriers). A bandwidth portion (BWP) can be defined as multiple consecutive (physical) resource blocks ((P)RBs) in the frequency domain, and a BWP can correspond to a set of parameters (e.g., SCS, CP length, etc.). A carrier can include up to N BWPs (e.g., 5 BWPs). Data communication can be performed via active BWPs. Each element can be referred to as a resource element (RE) in the resource grid, and a complex symbol can be mapped to each element.

[0083] The bandwidth portion (BWP) and carrier will be described in detail below.

[0084] A BWP can be a contiguous set of Physical Resource Blocks (PRBs) within a given set of parameters. A PRB can be a contiguous set of Common Resource Blocks (CRBs) for a given set of parameters on a given carrier.

[0085] For example, a BWP can be at least one of an active BWP, an initial BWP, and / or a default BWP. For example, a UE may not monitor downlink radio link quality in DL BWPs other than the active DL BWP on the primary cell (PCell). For example, a UE may not receive PDCCH, Physical Downlink Shared Channel (PDSCH), or Channel State Information-Reference Signal (CSI-RS) (excluding RRM) other than the active DL BWP. For example, a UE may not trigger Channel State Information (CSI) reports for inactive DL BWPs. For example, a UE may not transmit Physical Uplink Control Channel (PUCCH) or Physical Uplink Shared Channel (PUSCH) other than the active UL BWP. For example, in the downlink case, the initial BWP can be given as a continuous set of RBs (configured by the Physical Broadcast Channel (PBCH)) for the Remaining Minimal System Information (RMSI) Control Resource Set (CORESET). For example, in the uplink case, the initial BWP can be given by the System Information Block (SIB) for the random access procedure. For example, a default BWP can be configured by a higher layer. For example, the initial value of the default BWP can be the initial DL BWP. To save energy, if the UE cannot detect downlink control information (DCI) during a specified period, the UE can switch its active BWP to the default BWP.

[0086] Furthermore, a BWP can be defined for an SL. The same SL BWP can be used for both transmission and reception. For example, a transmitting UE can transmit an SL channel or SL signal on a specific BWP, and a receiving UE can receive an SL channel or SL signal on a specific BWP. In a licensed carrier, the SL BWP can be defined separately from the Uu BWP, and the SL BWP can have separate configuration signaling from the Uu BWP. For example, a UE can receive configuration for an SL BWP from the BS / network. For example, a UE can receive configuration for a Uu BWP from the BS / network. SLBWPs are (pre-)configured on the carrier for NR V2X UEs outside coverage and RRC_IDLE UEs. For UEs in RRC_CONNECTED mode, at least one SL BWP can be activated on the carrier.

[0087] Figure 6 An example of a BWP according to an embodiment of this disclosure is shown. Figure 6 The implementation methods can be combined with various implementation methods of this disclosure. It is assumed that in... Figure 6 In this implementation, the number of BWPs is 3.

[0088] Reference Figure 6 A Common Resource Block (CRB) can be a carrier resource block numbered from one end of a carrier frequency band to the other. Alternatively, a Producer Resource Block (PRB) can be a resource block numbered within each BWP. Point A can indicate a common reference point for the resource block grid.

[0089] It can be determined by point A and the offset (N) relative to point A. start BWP ) and bandwidth (N size BWP To configure the BWP, point A can be an external reference point for the PRB of a carrier, with subcarrier 0 of all parameter sets (e.g., all parameter sets supported by the network on the corresponding carrier) aligned at point A. For example, offset can be the PRB distance between the lowest subcarrier in a given parameter set and point A. For example, bandwidth can be the number of PRBs in a given parameter set.

[0090] The following text will describe V2X or SL communication.

[0091] The secondary link synchronization signal (SLSS) can include a primary secondary link synchronization signal (PSSS) and a secondary secondary link synchronization signal (SSSS) as SL-specific sequences. The PSSS can be referred to as the secondary link primary synchronization signal (S-PSS), and the SSSS can be referred to as the secondary link secondary synchronization signal (S-SSS). For example, a 127-character M-sequence can be used for the S-PSS, and a 127-character Gold sequence can be used for the S-SSS. For example, the UE can use the S-PSS for initial signal detection and synchronization acquisition. For example, the UE can use the S-PSS and S-SSS for detailed synchronization acquisition and for detecting the synchronization signal ID.

[0092] The Physical Secondary Link Broadcast Channel (PSBCH) can be a (broadcast) channel used to transmit default (system) information that the UE must know before SL signal transmission / reception. For example, the default information could be related to SLSS, duplex mode (DM), Time Division Duplex (TDD) uplink / downlink (UL / DL) configuration, resource pool information, and application types related to SLSS, subframe offset, and broadcast information. For instance, to evaluate PSBCH performance in NR V2X, the PSBCH payload size can be 56 bits, including 24 bits of Cyclic Redundancy Check (CRC).

[0093] S-PSS, S-SSS, and PSBCH can be included in a block format that supports periodic transmission (e.g., SL synchronization signal (SS) / PSBCH block, hereinafter, secondary link synchronization signal block (S-SSB)). The S-SSB can have the same parameter set (i.e., SCS and CP lengths) as the Physical Secondary Link Control Channel (PSCCH) / Physical Secondary Link Shared Channel (PSSCH) in the carrier, and the transmission bandwidth can exist within a (pre-)configured secondary link (SL) BWP. For example, the S-SSB can have a bandwidth of 11 resource blocks (SBs). For example, the PSBCH can exist across 11 RBs. Additionally, the frequency location of the S-SSB can be (pre-)configured. Therefore, the UE does not need to perform hypothesis detection at the frequency to discover the S-SSB in the carrier.

[0094] Figure 7 A UE performing V2X or SL communication according to an embodiment of this disclosure is shown. Figure 7 The implementation methods can be combined with various implementation methods of this disclosure.

[0095] Reference Figure 7In V2X or SL communication, the term "UE" can generally refer to a user's UE. However, if a network device such as a BS transmits / receives signals according to a communication scheme between UEs, then the BS can also be considered a UE. For example, UE 1 can be a first device 100, and UE 2 can be a second device 200.

[0096] For example, UE 1 can select a resource element corresponding to a specific resource from a resource pool that represents a set of resource families. Additionally, UE 1 can transmit SL signals using resource elements. For instance, the resource pool in which UE 1 can transmit signals can be configured for UE 2, acting as a receiving UE, and UE 1's signals can be detected within that resource pool.

[0097] In this document, if UE 1 is within the connection range of the BS, the BS can inform UE 1 of the resource pool. Otherwise, if UE 1 is outside the connection range of the BS, another UE can inform UE 1 of the resource pool, or UE 1 can use a pre-configured resource pool.

[0098] Typically, resource pools can be configured in units of multiple resources, and each UE can select one or more units of resources to use in its SL signal transmission.

[0099] The following section describes resource allocation in SL.

[0100] Figure 8 The process of a UE performing V2X or SL communication based on a transmission mode according to an embodiment of this disclosure is illustrated. Figure 8 The implementation methods can be combined with various implementation methods of this disclosure. In various implementation methods of this disclosure, the transmission mode can be referred to as a mode or resource allocation mode. Hereinafter, for ease of explanation, in LTE, the transmission mode can be referred to as the LTE transmission mode. In NR, the transmission mode can be referred to as the NR resource allocation mode.

[0101] For example, Figure 8 (a) illustrates UE operation associated with LTE transmission mode 1 or LTE transmission mode 3. Alternatively, for example, Figure 8 (a) illustrates UE operations associated with NR resource allocation mode 1. For example, LTE transmission mode 1 can be applied to regular SL communication, and LTE transmission mode 3 can be applied to V2X communication.

[0102] For example, Figure 8 (b) illustrates UE operation associated with LTE transmission mode 2 or LTE transmission mode 4. Alternatively, for example, Figure 8 (b) shows the UE operation associated with NR resource allocation mode 2.

[0103] Reference Figure 8 In (a) of this document, in LTE transmission mode 1, LTE transmission mode 3, or NR resource allocation mode 1, the BS can schedule SL resources for the UE to use for SL transmission. For example, the BS can perform resource scheduling for UE 1 via PDCCH (e.g., Downlink Control Information (DCI)) or RRC signaling (e.g., Configuration Grant Type 1 or Configuration Grant Type 2), and UE 1 can perform V2X or SL communication against UE 2 based on the resource scheduling. For example, UE 1 can send SCI to UE 2 via the Physical Secondary Link Control Channel (PSCCH), and subsequently send SCI-based data to UE 2 via the Physical Secondary Link Shared Channel (PSSCH).

[0104] Reference Figure 8 In (b) of this document, under LTE transmission mode 2, LTE transmission mode 4, or NR resource allocation mode 2, the UE can determine the SL transmission resource within the SL resources configured by the BS / network or the pre-configured SL resources. For example, the configured SL resources or the pre-configured SL resources can be a resource pool. For example, the UE can autonomously select or schedule resources for SL transmission. For example, the UE can perform SL communication by autonomously selecting resources from the configured resource pool. For example, the UE can autonomously select resources within a selection window by performing a sensing and resource (re)selection process. For example, sensing can be performed on a sub-channel basis. Furthermore, UE 1, which has autonomously selected resources from the resource pool, can send SCI to UE 2 via PSCCH, and subsequently send SCI-based data to UE 2 via PSSCH.

[0105] Figure 9 Three broadcast types according to embodiments of this disclosure are shown. Figure 9 The implementation methods can be combined with various implementation methods of this disclosure. Specifically, Figure 9 (a) in the diagram illustrates broadcast SL communication. Figure 9 (b) shows unicast SL communication, and Figure 9 (c) illustrates multicast SL communication. In the case of unicast SL communication, a UE can perform one-to-one communication with another UE. In the case of multicast SL transmission, a UE can perform SL communication with one or more UEs in a group to which it belongs. In various embodiments of this disclosure, SL multicast communication can be replaced by SL multicast communication, SL one-to-many communication, etc.

[0106] According to embodiments of this disclosure, to avoid interference between the secondary link (SL) signal and the downlink (DL) signal in the resource configuration defined in the Uu link, the NR V2X system can use only UL resources as SL resources. In this case, the base station can change the UL / DL configuration of the Uu link and signal the changed UL / DL configuration to the UE if the UE is within the base station's coverage area. However, in the case of an out-of-coverage (OOC) UE, since the UE is not connected to the base station, the base station cannot signal the changed UL / DL configuration to the UE. In this situation, due to the different understanding of SL resources between UEs within the coverage area (INC) and OOC UEs, mutual communication may become impossible. For example, to solve this problem, the V2X UE can use the PSBCH in the S-SSB signal to send the UL / DL configuration information configured by the base station to a neighboring UE.

[0107] In such cases, for example, due to limitations in the amount of data that can be transmitted via the PSBCH, the entire UL / DL configuration information configured by the base station cannot be transmitted via the PSBCH. In this disclosure, under these premises, a method for efficiently transmitting UL / DL configuration information via the PSBCH is proposed.

[0108] According to embodiments of this disclosure, the UL / DL configuration information configured by the base station may consist of one or more patterns, and for each pattern: the UL / DL configuration may include the time period in which the pattern will be applied; the number of UL / DL time slots in the time period; and information related to the reference SCS required to apply each time slot. For example, in SL communication, in order to minimize interference with DL communication, only UL time slots may be used as SL time slots.

[0109] According to embodiments of this disclosure, when a base station is configured with up to two patterns, the TDD configuration field transmitted via the PSBCH may include the number of patterns (X), the period of the patterns (Y), and the number of UL slots for each pattern (Z). For example, the reference SCS may be determined by implicit rules, predefined, preconfigured by higher-layer signaling, or configured by higher-layer signaling.

[0110] According to embodiments of this disclosure, a value X indicating the number of patterns can be represented using 1 bit as shown in Table 5.

[0111] [Table 5]

[0112] X Number of patterns 0 1 1 2

[0113] According to embodiments of this disclosure, the value Y representing the maximum value of two pattern time periods can be represented using 4 bits, as shown in Tables 6 and 7, respectively, based on the number of pattern periods.

[0114] [Table 6]

[0115] Y (decimal) cycle 0 0.5 1 0.625 2 1 3 1.25 4 2 5 2.5 6 4 7 5 8 10

[0116] Table 6 shows the Y value based on the pattern period when the number of pattern periods is 1. For example, the case where the number of pattern periods is 1 can mean that the value of X is 0.

[0117] [Table 7]

[0118] Y (decimal) The period of pattern 1 The period of pattern 2 0 0.5 0.5 1 0.625 0.625 2 1 1 3 0.5 2 4 2 0.5 5 1.25 1.25 6 1 3 7 3 1 8 2 2 9 1 4 10 4 1 11 2 3 12 3 2 13 2.5 2.5 14 5 5 15 10 10

[0119] Table 7 shows the Y values ​​based on the periods of the two patterns when the number of pattern periods is 2. For example, the case where the number of pattern periods is 2 can refer to the case where the value of X is 1.

[0120] According to embodiments of this disclosure, when the X and Y values ​​are determined and the reference SCS value is determined, the maximum number of UL time slots that can be counted within the time periods of Pattern 1 and Pattern 2 can be determined when counting is performed based on the reference SCS. For example, assuming N P1 and N P2 Z is the maximum number of countable UL slots in each time period of Pattern 1 and Pattern 2 when counting is based on the cells associated with the reference SCS. It can be represented by a 7-bit value Z for the number of UL slots for each configuration in the two patterns as shown in Table 8.

[0121] [Table 8]

[0122] Z (decimal) UL slot number in Pattern 1 UL slot number in pattern 2 <![CDATA[0,...,N P2 ]]> 0 <![CDATA[0,...,N P2 ]]> <![CDATA[N P2 +1,...,2*N P2 +1]]> 1 <![CDATA[0,...,N P2 ]]> <![CDATA[2*N P2 +2,...,3*N P2 +2]]> 2 <![CDATA[0,...,N P2 ]]> … … … <![CDATA[k*N P2 +k,...,(k+1)*N P2 +k]]> k <![CDATA[0,...,N P2 <!-- 10 -->]]> … … … <![CDATA[N P1 *N P2 +N P1 ,...,(N P1 +1)*N P2 +N P1 ]]> <![CDATA[N P1 ]]> <![CDATA[0,...,N P2 ]]>

[0123] For example, the Z value can be represented as shown in Equation 1 below.

[0124] [Formula 1]

[0125] Z = n1*(N) P2 +1)+n2

[0126] For example, n1 and n2 can be the number of UL time slots for Pattern 1 and Pattern 2, respectively, counted based on the reference SCS. For example, n1 and n2 can be values ​​that will be transmitted via PSBCH.

[0127] For example, it can be

[0128] For example, m1 and m2 are the number of UL time slots that constitute the potential SL time slots associated with Pattern 1 and Pattern 2, respectively, and can be values ​​determined by TDD-UL-DL-ConfigCommon. In this case, the number of UL time slots constituting the potential SL time slots can be the number of time slots that includes both the number of UL time slots configured by TDD-UL-DL-ConfigCommon and the number of partial UL time slots that satisfy the start and length conditions of the SL symbols associated with the SL BWP configuration.

[0129] According to embodiments of this disclosure, it is assumed that the maximum number of time slots in Pattern 1 and Pattern 2 configured by TDD-UL-DL-ConfigCommon are M respectively. P1 and M P2 In the above formula, the maximum value N of the number of time slots in Pattern 1 and Pattern 2 related to SL-TDD-Config is... P1 and N P2 It is calculated as shown in Equation 2 below.

[0130] [Equation 2]

[0131]

[0132] Referring to Equation 2, where λ can be a grouping factor used to group the number of UL slots constituting a potential SL slot by a number of λ and use the Z value constituting the SL-TDD-Config field in the PSBCH as a parameter for counting UL slots. For example, counting the number of UL slots by grouping as many as λ might mean counting λ UL slots as one UL slot based on the unit associated with the grouping factor. For example, λ can include a granularity-related value. For example, when using a reference SCS to configure the grouping factor, when the parameter set of the reference SCS configured in TDD-UL-DL-ConfigCommon is μ1 and the parameter set of the reference SCS associated with the SL-TDD-Config sent via the PSBCH is μ2, the grouping factor λ can be defined as follows in Equation 3.

[0133] [Formula 3]

[0134] λ=2 μ =2 μ2 / 2 μ1 Referring to Equation 3, μ can represent the relative parameter set used for the transformation of two parameter sets.

[0135] For example, when the Z value calculated by Equation 1 is sent via SL-TDD-Config in PSBCH, the receiving UE can calculate the number of UL slots to be used as potential SL slots based on Equation 4.

[0136] [Formula 4]

[0137]

[0138] n2_SL=λ·(Z mod(N P2 +1))

[0139] Referring to Equation 4, n1_SL and n2_SL can represent the number of UL slots that will be used as potential SL slots in Pattern 1 and Pattern 2, respectively.

[0140] According to an embodiment of this disclosure, the Z value according to Table 8 can be expressed as shown in Formula 5.

[0141] [Formula 5]

[0142] Z = n1*(N) P +1)+n2

[0143] Here, N P N can be represented P1 and N P2 The larger or equal value among them. For example, NP = max(N P1 N P2 ).

[0144] When the Z value calculated by Equation 5 is sent via SL-TDD-Config in PSBCH, the receiving UE can calculate the number of UL slots to be used as potential SL slots based on Equation 6.

[0145] [Formula 6]

[0146]

[0147] n2_SL=λ·(Z mod(N P +1))

[0148] Referring to Equation 6, n1_SL and n2_SL can represent the number of UL slots that will be used as potential SL slots in Pattern 1 and Pattern 2, respectively.

[0149] For example, if only one pattern is configured, when the SCS is 15kHz, 30kHz, 60kHz and / or 120kHz, it can be represented within 7 bits since the maximum number of UL slots is 80. Accordingly, the number of configured UL slots can be represented as a Z value.

[0150] For example, in Table 8, the case where the Z value is 0 is the case where the number of UL time slots configured in Pattern 1 and Pattern 2 is 0, that is, the case where the base station configures that there is no UL transmission and only DL transmission can be performed in the time interval when the corresponding UL / DL configuration is applied in the corresponding frequency band.

[0151] According to embodiments of this disclosure, the Z value can be represented as shown in Table 9 below.

[0152] [Table 9]

[0153] z (decimal) UL slot number in Pattern 1 UL slot number in pattern 2 <![CDATA[0...,N P2 -1]]> 0 <![CDATA[1,...,N P2 ]]> <![CDATA[N P2 ,...,2*N P2 ]]> 1 <![CDATA[0,...,N P2 ]]> <![CDATA[2*N P2 +1,...,3*N P2 +1]]> 2 <![CDATA[0,...,N P2 ]]> … … … <![CDATA[k*N P2 +k-1,...,(k+1)*N P2 +k-1]]> k <![CDATA[0...,N P2 ]]> … … … <![CDATA[N P1 *N P2 +N P1 -1,...,(N P1 +1)*N P2 +N P1 -1]]> <![CDATA[N P1 ]]> <![CDATA[0,...,N P2 ]]>

[0154] Referring to Table 9, the Z value can be expressed as in Equation 7.

[0155] [Formula 7]

[0156] Z = n1*(N) P2 +1)+n2-1

[0157] For example, when the Z value calculated by Equation 7 is sent via SL-TDD-Config in PSBCH, the receiving UE can calculate the number of UL slots to be used for potential SL slots based on Equation 8.

[0158] [Formula 8]

[0159]

[0160] n2_SL=λ·((Z+1)mod(N P2 +1))

[0161] Referring to Equation 8, n1_SL and n2_SL can represent the number of UL slots that will be used as potential SL slots in Pattern 1 and Pattern 2, respectively.

[0162] According to embodiments of this disclosure, the Z value in Table 9 can be represented as shown in Formula 9.

[0163] [Formula 9]

[0164] Z = n1*(N) P +1)+n2-1

[0165] Here, N P N can be represented P1 and N P2 The larger or equal value among them. For example, NP = max(N P1 N P2 ).

[0166] When the Z value calculated based on Equation 9 is sent via SL-TDD-Config in PSBCH, the receiving UE can calculate the number of UL slots to be used for potential SL slots based on Equation 10.

[0167] [Formula 10]

[0168]

[0169] n2_SL=λ·((Z+1)mod(N P +1))

[0170] Referring to Equation 10, n1_SL and n2_SL can represent the number of UL slots that will be used as potential SL slots in Pattern 1 and Pattern 2, respectively.

[0171] Figure 10 The DL time slots, DL symbols, UL time slots, and UL symbols allocated within the DL / UL time period according to embodiments of the present disclosure are shown. Figure 10 The implementation methods can be combined with various implementation methods of this disclosure.

[0172] Reference Figure 10 For example, the base station allocates UL resources starting from the end of each pattern, as many as the number of UL time slots configured via RRC signaling. Thereafter, it allocates UL resources starting from the last symbol of the previous time slot of the first UL time slot in the pattern, as many as the number of UL symbols configured via RRC signaling. The single or multiple patterns described above can be repeated in cycles (summation). For example, a UE receiving TDD-UL-DL configuration from the base station can know as follows... Figure 10 The DL resources and / or UL resources are allocated as shown.

[0173] Figure 11 The diagram illustrates a UL time slot included in a pattern time period configured according to a TDD-UL-DL according to an embodiment of the present disclosure. Figure 11 The implementation methods can be combined with various implementation methods of this disclosure.

[0174] Reference Figure 11 The number of potential SL slots (i.e., UL slots) that the transmitting UE intends to transmit via PSBCH can be the number of UL slots transmitted in the SCS at 120 kHz. For example, if two patterns are configured according to a TDD-UL-DL configuration, the number of UL slots can be included in information related to the number of UL slots in each time period of the two patterns and transmitted via PSBCH. For example, the information related to the number of UL slots in each time period of the two patterns can include values ​​related to the number of UL slots in each time period of the two patterns. For example, Figure 11 (a) to (d) in the table can indicate the time period of the first pattern configured according to TDD-UL-DL. For example, in Figure 11In (a), the number of SL slots in the first pattern transmitted in the 120kHz SCS can be n. In this case, the value related to the number of UL slots in the time period of the first pattern can be n. For example, based on the period of the two patterns configured according to the SCS (e.g., 120kHz here) and TDD-UL-DL associated with SL communication, Figure 11 (b) can represent the case where the value w related to granularity is 2. Here, the number of UL slots in the time period of the first pattern is n, but it can be counted in units of UL slots of 120kHz / w = 60kHz. That is, the value related to the number of UL slots in the time period of the first pattern can be the absolute value of n / 2. For example, based on the period of two patterns configured according to the SCS (e.g., 120kHz here) and TDD-UL-DL associated with SL communication, Figure 11 (c) can represent the case where the value w related to granularity is 4. Here, the number of UL slots in the time period of the first pattern is n, but it can be counted in units of UL slots of 120kHz / w = 30kHz. That is, the value related to the number of UL slots in the time period of the first pattern can be the absolute value of n / 4. For example, based on the period of two patterns configured according to the SCS (e.g., 120kHz here) and TDD-UL-DL associated with SL communication, Figure 11 (d) can represent the case where the value w related to the granularity is 8. Here, the number of UL slots in the time period of the first pattern is n, but it can be counted in units of UL slots of 120kHz / w = 15kHz. That is, the value related to the number of UL slots in the time period of the first pattern can be the absolute value of n / 8.

[0175] According to embodiments of this disclosure, the base station can pre-configure or configure TDD configuration information sent via PSBCH for the UE through higher-layer signaling such as RRC or MAC CE.

[0176] According to embodiments of this disclosure, the RRC parameters for the number of UL slots configured for the UE via higher-layer signaling can be determined using Table 10 below. For example, the index of Table 10 can be configured for the UE via higher-layer signaling. In this case, for example, the reference SCS applied to count the number of UL slots can be obtained by dividing the actual SL SCS value by λ, where λ is the grouping factor in Table 10.

[0177] According to embodiments of this disclosure, the number of UL slots can be counted based on b) having a reference SCS value smaller than a) reference SCS obtained based on Table 10. In this case, the actual applied b) reference SCS value or the information necessary to obtain that value can be configured or pre-configured by the base station for the UE via higher-layer signaling such as RRC or MAC CE.

[0178] According to embodiments of this disclosure, the TDD configuration fields of the reference SCS and PSBCH can be (pre)configured via higher-layer signaling. For example, in the case of a single pattern in higher-layer signaling, the reference SCS can be defined as the same as the SL SCS. In the case of a dual pattern, the reference SCS can be defined as the value obtained by dividing the SL SCS by the grouping factor λ.

[0179] Table 10 shows the grouping factor defined for the dual-pattern case. For example, the reference SCS can be obtained based on Table 10. For example, the reference SCS for each case can be a value obtained by dividing the SL SCS by the grouping factor. For example, the reference SCS here can be a different concept from the reference SCS indicated in the TDD-UL-DL configuration. For example, the unit of the slot associated with the reference SCS can be a unit defined as indicating the number of slots in multiple patterns within a finite number of bits.

[0180] [Table 10]

[0181]

[0182] According to embodiments of this disclosure, UL time slots signaled via PSBCH may include time slots containing the positions and numbers of SL symbols defined in the SL BWP configuration. That is, for example, assuming X and Y are the number of SL symbols and the starting index of the SL symbols defined in the SL BWP configuration, respectively, UL time slots signaled via PSBCH may include time slots in which the Y-th, (Y+1), ..., (Y+X-1)-th symbols in at least one time slot are configured as UL symbols according to the UL / DL configuration of the base station. Alternatively, for example, when UL symbols are continuously configured starting from the end of a time slot, UL time slots signaled via PSBCH may include time slots in which at least the Y-th symbol is configured as a UL symbol.

[0183] According to embodiments of this disclosure, the 12 bits of the SL-TDD-config field used to signal candidate (UL) resource information of the application SL resource pool bitmap via PSBCH can be configured as shown in Table 11.

[0184] [Table 11]

[0185]

[0186]

[0187] Table 12 shows the 4 bits associated with the time period of the pattern included in the PSBCH, and the time period of the pattern represented by these 4 bits when only one pattern is configured.

[0188] [Table 12]

[0189] <![CDATA[a1,a2,a3,a4]]> The time slot configuration period P (ms) for Pattern 1. 0,0,0,0 0.5 0,0,0,1 0.625 0,0,1,0 1 0,0,1,1 1.25 0,1,0,0 2 0,1,0,1 2.5 0,1,1,0 4 0,1,1,1 5 1,0,0,0 10 reserve reserve

[0190] Table 13 shows the 4 bits associated with the time period of each pattern included in the PSBCH when two patterns are configured. It also shows the values ​​associated with the time period of each pattern indicated by these 4 bits, and the granularity associated with the SL SCS.

[0191] [Table 13]

[0192]

[0193] According to embodiments of this disclosure, the SL-TDD-config can be a signaling field that determines candidate (UL) resources for applying the SL resource pool bitmap based on the TDD-UL-DL-ConfigurationCommon configured by the NR network when performing NR-V2X communication on an NR carrier. For example, if the NR-V2X UE operates on an LTE carrier, the NR-V2X UE should be able to signal notifications based on the UL / DL configuration defined by the LTE network. Table 14 illustrates embodiments of the UL / DL configuration defined by the LTE network.

[0194] [Table 14]

[0195]

[0196] Referring to Table 14, when the LTE UL / DL is configured as 0, 1, 2, or 3, in the case of two patterns configured in each of the SL-TDD-config fields, the combination of the two patterns (P, P1) can be signaled as (P=5, P2=5), (P=4, P2=1), or (P=3, P2=2). However, for example, if the LTE UL / DL is configured as 4, 5, or 6, signaling may not be possible for the SL-TDD-config field when two patterns are configured. Therefore, for example, if the LTE UL / DL is configured as 0, 1, 2, or 3, the signaling is for the combination (P, P2) corresponding to the case of two patterns configured in the SL-TDD-config code point, and if the LTE UL / DL is configured as 4, 5, or 6, in the case of only one pattern configured in the SL-TDD-config code point, three of the seven unused reserved code points can be used to signal it.

[0197] Table 15 shows the code points and corresponding time periods associated with each case of the UL / DL configuration when an NR-V2X UE needs to send signal notifications based on the UL / DL configuration defined by the LTE network. For example, the SL-TDD-config may include the following a1, a2, a3, and a4.

[0198] [Table 15]

[0199] <![CDATA[a1,a2,a3,a4]]> The time slot configuration period P (ms) for Pattern 1. 0,0,0,0 0.5 0,0,0,1 0.625 0,0,1,0 1 0,0,1,1 1.25 0,1,0,0 2 0,1,0,1 2.5 0,1,1,0 4 0,1,1,1 5 1,0,0,0 10 1,0,0,1 LTE UL-DL configuration = 4 1,0,1,0 LTE UL-DL configuration = 5 1,0,1,1 LTE UL-DL configuration = 6 reserve reserve

[0200] This disclosure proposes a method for a UE to transmit a UL / DL TDD configuration configured by a base station via a PSBCH that transmits a limited amount of data for SL communication. For example, as described above, the configuration can be achieved through higher-layer signaling or by determining the reference SCS through implicit rules. Furthermore, this disclosure proposes a method for using a limited number of bits to represent the number of UL slots configured in at most two patterns. For example, the various embodiments described in this disclosure can be combined with each other.

[0201] Figure 12 The process of a transmitting UE sending a PSBCH to a receiving UE according to an embodiment of the present disclosure is illustrated. Figure 12 The implementation methods can be combined with various implementation methods of this disclosure.

[0202] Reference Figure 12In step S1210, the base station may send TDD-UL-DL configuration information to the transmitting UE. For example, the TDD-UL-DL configuration information may include information related to multiple UL TDD patterns. For example, the multiple UL TDD patterns may be configured as two patterns. The information related to the UL TDD patterns may include at least one of information related to UL timeslots, information related to UL symbols, and / or information related to the period of the UL TDD patterns. In step S1220, the transmitting UE may obtain a Z value based on the information related to the multiple UL TDD patterns and the SCS related to SL communication. For example, the Z value may be a value represented by 4 bits of information related to each UL timeslot within the time period of the two patterns. For example, the Z value may be obtained based on a granularity-related value or a grouping factor λ. For example, a granularity-related value may be determined based on the SCS related to SL communication and the period of each of the multiple UL TDD patterns. For example, the Z value may include information related to the number of UL timeslots in each week period of the multiple UL TDD patterns. The number of UL time slots may include the number of time slots counted in units of time slots associated with an SCS equal to or less than that associated with SL communication. In step S1230, the transmitting UE may send the PSBCH to the receiving UE. For example, the PSBCH may include a Z value. In step S1240, the receiving UE may receive information associated with UL time slots in each time period of the multiple UL TDD patterns via the PSBCH. For example, the receiving UE may obtain the number of UL time slots in each time period of the multiple UL TDD patterns based on the information associated with UL time slots in each time period of the multiple UL TDD patterns. For example, the number of UL time slots may be potential SL time slots that can be used for SL communication.

[0203] Figure 13 The process of a first device performing wireless communication according to an embodiment of the present disclosure is illustrated. Figure 13 The implementation methods can be combined with various implementation methods of this disclosure.

[0204] Reference Figure 13In step S1310, the first device can receive TDD-UL-DL configuration information from the base station, including information related to a first time slot pattern and information related to a second time slot pattern. For example, the information related to the first time slot pattern may include information related to the period of the first time slot pattern and information related to the first UL resource, and the information related to the second time slot pattern may include information related to the period of the second time slot pattern and information related to the second UL resource. In step S1320, the first device can determine a granularity-related value based on i) the period of the first time slot pattern, ii) the period of the second time slot pattern, and iii) the first subcarrier spacing (SCS) related to SL communication. In step S1330, the first device can send a Physical Sublink Broadcast Channel (PSBCH) to the second device, including information related to the first UL resource and information related to the second UL resource. For example, the information related to the first UL resource and the information related to the second UL resource may be represented based on units related to the second SCS, and the second SCS may be obtained based on a value obtained by dividing the first SCS by the granularity-related value.

[0205] For example, based on the sum of the periods of the first time slot pattern and the second time slot pattern being 4ms and the first SCS being 120kHz, the granularity-related value can be 2.

[0206] For example, based on the sum of the periods of the first and second time slot patterns being 5 ms and the first SCS being 120 kHz, the granularity-related value can be 2.

[0207] For example, based on a first time slot pattern with a period of 5ms, a second time slot pattern with a period of 5ms, and a first SCS of 60kHz, the granularity-related value can be 2.

[0208] For example, based on a first time slot pattern with a period of 10ms, a second time slot pattern with a period of 10ms, and a first SCS of 30kHz, the value related to granularity can be 2.

[0209] For example, based on a first time slot pattern with a period of 5ms, a second time slot pattern with a period of 5ms, and a first SCS of 120kHz, the granularity-related value can be 4.

[0210] For example, based on a first time slot pattern with a period of 10ms, a second time slot pattern with a period of 10ms, and a first SCS of 60kHz, the granularity-related value can be 4.

[0211] For example, based on a first time slot pattern with a period of 10ms, a second time slot pattern with a period of 10ms, and a first SCS of 120kHz, the granularity-related value can be 8.

[0212] For example, information related to a first UL resource may include the number of time slots associated with the first UL resource, and information related to a second UL resource may include the number of time slots associated with the second UL resource.

[0213] For example, the information related to the first UL resource and the information related to the second UL resource included in the PSBCH can be represented by 7 bits.

[0214] For example, information related to the first UL resource and information related to the second UL resource can be represented based on the maximum number of UL time slots that can exist in the time period of the first time slot pattern, which is represented based on the cells associated with the second SCS.

[0215] For example, information related to the first UL resource and information related to the second UL resource can be represented as the sum of the following: the number of time slots related to the first UL resource represented by the cells associated with the second SCS; and a value obtained by multiplying the following two items: a value obtained by adding 1 to the maximum number of UL time slots that can exist in the time period of the first time slot pattern represented by the cells associated with the second SCS; and the number of time slots related to the second UL resource represented by the cells associated with the second SCS.

[0216] For example, information related to the first UL resource and information related to the second UL resource can be represented as the sum of the following: a value obtained by subtracting 1 from the number of time slots related to the first UL resource represented by the cells associated with the second SCS; and a value obtained by multiplying the following two items: a value obtained by adding 1 to the maximum number of UL time slots that can exist in the time period of the first time slot pattern represented by the cells associated with the second SCS; and the number of time slots related to the second UL resource represented by the cells associated with the second SCS.

[0217] The above-described embodiments can be applied to various devices described below. For example, the processor 102 of the first device 100 can control the transceiver 106 to receive TDD-UL-DL configuration information from the base station, including information related to a first timeslot pattern and information related to a second timeslot pattern. For example, the information related to the first timeslot pattern may include information related to the period of the first timeslot pattern and information related to the first UL resource, and the information related to the second timeslot pattern may include information related to the period of the second timeslot pattern and information related to the second UL resource. Furthermore, the processor 102 of the first device 100 can determine a granularity-related value based on i) the period of the first timeslot pattern, ii) the period of the second timeslot pattern, and iii) the first subcarrier spacing (SCS) related to SL communication. Furthermore, the processor 102 of the first device 100 can control the transceiver 106 to send a Physical Sublink Broadcast Channel (PSBCH) including information related to the first UL resource and information related to the second UL resource to the second device 200. For example, information related to the first UL resource and information related to the second UL resource can be represented based on cells related to the second SCS, and the second SCS can be obtained based on a value obtained by dividing the first SCS by a value related to granularity.

[0218] According to embodiments of this disclosure, a first apparatus for performing wireless communication can be provided. For example, the first apparatus may include: one or more memories storing instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers. For example, the one or more processors may execute the instructions to: receive TDD-UL-DL configuration information from a base station, including information related to a first time slot pattern and information related to a second time slot pattern, wherein the information related to the first time slot pattern may include information related to the period of the first time slot pattern and information related to a first UL resource, and wherein the information related to the second time slot pattern may include information related to the period of the second time slot pattern and information related to a second UL resource; determine a granularity-related value based on i) the period of the first time slot pattern, ii) the period of the second time slot pattern and iii) a first subcarrier spacing (SCS) related to SL communication; and transmit a Physical Sublink Broadcast Channel (PSBCH) to a second device, including information related to the first UL resource and information related to the second UL resource, wherein the information related to the first UL resource and information related to the second UL resource may be represented based on units related to the second SCS, and wherein the second SCS may be obtained based on a value obtained by dividing the first SCS by the granularity-related value.

[0219] According to embodiments of this disclosure, an apparatus suitable for controlling a first user equipment (UE) can be provided. For example, the apparatus may include: one or more processors; and one or more memories operatively connectable to the one or more processors and storing instructions. For example, the one or more processors may execute the instructions to: receive TDD-UL-DL configuration information from a base station, including information related to a first time slot pattern and information related to a second time slot pattern, wherein the information related to the first time slot pattern may include information related to the period of the first time slot pattern and information related to a first UL resource, and wherein the information related to the second time slot pattern may include information related to the period of the second time slot pattern and information related to a second UL resource; determine a granularity-related value based on i) the period of the first time slot pattern, ii) the period of the second time slot pattern and iii) a first subcarrier spacing (SCS) related to SL communication; and transmit a Physical Sublink Broadcast Channel (PSBCH) to a second UE, including information related to the first UL resource and information related to the second UL resource, wherein the information related to the first UL resource and information related to the second UL resource may be represented based on a unit related to the second SCS, and wherein the second SCS may be obtained based on a value obtained by dividing the first SCS by the granularity-related value.

[0220] According to embodiments of this disclosure, a non-transitory computer-readable storage medium storing instructions can be proposed. For example, when executed, the instructions can cause a first device to: receive TDD-UL-DL configuration information from a base station, including information related to a first time slot pattern and information related to a second time slot pattern, wherein the information related to the first time slot pattern may include information related to the period of the first time slot pattern and information related to a first UL resource, and wherein the information related to the second time slot pattern may include information related to the period of the second time slot pattern and information related to a second UL resource; determine a granularity-related value based on i) the period of the first time slot pattern, ii) the period of the second time slot pattern and iii) a first subcarrier spacing (SCS) related to SL communication; and transmit a Physical Sublink Broadcast Channel (PSBCH) to a second device, including information related to the first UL resource and information related to the second UL resource, wherein the information related to the first UL resource and information related to the second UL resource may be represented based on units related to the second SCS, and wherein the second SCS may be obtained based on a value obtained by dividing the first SCS by the granularity-related value.

[0221] Figure 14 The process of a second device performing wireless communication according to an embodiment of the present disclosure is illustrated. Figure 14The implementation methods can be combined with various implementation methods of this disclosure.

[0222] Reference Figure 14 In step S1410, the second device can receive from the first device a Physical Sublink Broadcast Channel (PSBCH) including information related to a first uplink (UL) resource and information related to a second UL resource. For example, the information related to the first UL resource and the information related to the second UL resource can be represented based on units related to a second subcarrier spacing (SCS). In step S1420, the second device can perform sublink (SL) communication based on the information related to the first UL resource and the information related to the second UL resource. For example, the second SCS can be obtained based on a value obtained by dividing the first SCS related to SL communication by a granularity-related value, and the granularity-related value can be determined based on i) the period of a first timeslot pattern related to the first UL resource, ii) the period of a second timeslot pattern related to the second UL resource, and iii) the first SCS.

[0223] For example, information related to a first UL resource may include the number of time slots associated with the first UL resource, and information related to a second UL resource may include the number of time slots associated with the second UL resource.

[0224] The above-described embodiments can be applied to various devices described below. For example, the processor 202 of the second device 200 can control the transceiver 206 to receive from the first device 100 a Physical Sublink Broadcast Channel (PSBCH) including information related to a first uplink (UL) resource and information related to a second UL resource. For example, the information related to the first UL resource and the information related to the second UL resource can be represented based on units related to a second subcarrier spacing (SCS). Furthermore, the processor 202 of the second device 200 can control the transceiver 206 to perform sublink (SL) communication based on the information related to the first UL resource and the information related to the second UL resource. For example, the second SCS can be obtained based on a value obtained by dividing the first SCS related to SL communication by a granularity-related value, and the granularity-related value can be determined based on i) the period of a first timeslot pattern related to the first UL resource, ii) the period of a second timeslot pattern related to the second UL resource, and iii) the first SCS.

[0225] According to embodiments of this disclosure, a second apparatus for performing wireless communication can be proposed. For example, the second apparatus may include: one or more memories storing instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers. For example, the one or more processors may execute the instructions to: receive from a first apparatus a Physical Sublink Broadcast Channel (PSBCH) including information related to a first uplink (UL) resource and information related to a second UL resource, wherein the information related to the first UL resource and the information related to the second UL resource may be represented based on units related to a second subcarrier spacing (SCS); and perform sublink (SL) communication based on the information related to the first UL resource and the information related to the second UL resource, wherein the second SCS may be obtained based on a value obtained by dividing the first SCS related to the SL communication by a granularity-related value, and wherein the granularity-related value may be determined based on i) the period of a first timeslot pattern related to the first UL resource, ii) the period of a second timeslot pattern related to the second UL resource, and iii) the first SCS.

[0226] For example, information related to the first UL resource may include the number of time slots associated with the first UL resource, and information related to the second UL resource may include the number of time slots associated with the second UL resource.

[0227] In the following, devices to which the respective embodiments of this disclosure may be applied will be described.

[0228] The various descriptions, functions, processes, proposals, methods and / or operating procedures described in this document can be applied to, but are not limited to, various fields requiring wireless communication / connectivity between devices (e.g., 5G).

[0229] The following description will be given in more detail with reference to the accompanying drawings. In the following drawings / description, unless otherwise described, the same reference numerals may denote the same or corresponding hardware blocks, software blocks, or functional blocks.

[0230] Figure 15 A communication system (1) according to an embodiment of the present disclosure is shown.

[0231] Reference Figure 15The communication system (1) applying various embodiments of this disclosure includes a wireless device, a base station (BS), and a network. Hereinafter, a wireless device refers to a device that performs communication using a radio access technology (RAT) (e.g., 5G New RAT (NR) or Long Term Evolution (LTE)) and may be referred to as a communication / radio / 5G device. Wireless devices may include, but are not limited to, robots (100a), vehicles (100b-1, 100b-2), extended reality (XR) devices (100c), handheld devices (100d), home appliances (100e), Internet of Things (IoT) devices (100f), and artificial intelligence (AI) devices / servers (400). For example, a vehicle may include a vehicle with wireless communication capabilities, an autonomous vehicle, and a vehicle capable of performing inter-vehicle communication. Hereinafter, a vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). XR devices can include augmented reality (AR) / virtual reality (VR) / mixed reality (MR) devices and can take the form of head-up displays (HMDs), head-up displays (HUDs) installed in vehicles, televisions, smartphones, computers, wearable devices, home appliances, digital signage, vehicles, robots, etc. Handheld devices can include smartphones, smart tablets, wearable devices (e.g., smartwatches or smart glasses) and computers (e.g., laptops). Home appliances can include TVs, refrigerators, and washing machines. IoT devices can include sensors and smart meters. For example, the BS and network can be implemented as wireless devices, and a particular wireless device (200a) can operate as a BS / network node relative to other wireless devices.

[0232] In addition to LTE, NR, and 6G, the wireless communication technologies implemented in the wireless devices 100a to 100f of this disclosure may also include narrowband Internet of Things (IoT) for low-power communication. In this case, for example, NB-IoT technology may be an example of low-power wide-area network (LPWAN) technology and may be implemented as a standard such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the aforementioned names. Alternatively or additionally, the wireless communication technologies implemented in the wireless devices 100a to 100f of this disclosure may perform communication based on LTE-M technology. In this case, as an example, LTE-M technology may be an example of LPWAN and may be referred to by various names including enhanced machine-type communication (eMTC). For example, LTE-M technology may be implemented as at least one of various standards such as 1) LTE Cat 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-bandwidth limited (non-BL), 5) LTE-MTC, 6) LTE machine-type communication, and / or 7) LTE M, and is not limited to the aforementioned names. Alternatively or additionally, the wireless communication technology implemented in the wireless devices 100a to 100f of this disclosure may include at least one of Bluetooth, Low Power Wide Area Network (LPWAN), and ZigBee, which takes into account low power communication, and is not limited to the names mentioned above. As an example, ZigBee technology may generate personal area networks (PANs) related to low / low power digital communication based on various standards including IEEE 802.15.4, and may be referred to by various names.

[0233] Wireless devices 100a to 100f can connect to network 300 via BS 200. AI technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can connect to AI server 400 via network 300. Network 300 can be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although wireless devices 100a to 100f can communicate with each other via BS 200 / network 300, wireless devices 100a to 100f can perform direct communication with each other (e.g., secondary link communication) without going through the BS / network. For example, vehicles 100b-1 and 100b-2 can perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). IoT devices (e.g., sensors) can perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0234] Wireless communication / connections 150a, 150b, or 150c can be established between wireless devices 100a to 100f / BS 200 or BS200 / BS 200. Here, the wireless communication / connection can be established via various RATs (e.g., 5G NR) such as uplink / downlink communication 150a, secondary link communication 150b (or D2D communication), or inter-BS communication (e.g., relay, access backhaul integration (IAB)). The wireless devices and BS / wireless devices can transmit / receive radio signals to / from each other via wireless communication / connections 150a and 150b. For example, wireless communication / connections 150a and 150b can transmit / receive signals via various physical channels. For this purpose, at least a portion of various configuration information configuration processes, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and resource allocation processes for transmitting / receiving radio signals can be performed based on various proposals of this disclosure.

[0235] Figure 16 A wireless device according to an embodiment of the present disclosure is shown.

[0236] Reference Figure 16 The first wireless device (100) and the second wireless device (200) can transmit radio signals via various RATs (e.g., LTE and NR). In this document, {the first wireless device (100) and the second wireless device (200)} can correspond to... Figure 15 {Wireless device (100x) and BS (200)} and / or {Wireless device (100x) and Wireless device (100x)}.

[0237] The first wireless device 100 may include 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. The processors 102 may control the memories 104 and / or the transceivers 106, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed herein. For example, the processors 102 may process information in the memories 104 to generate a first information / signal, and then transmit a radio signal including the first information / signal via the transceivers 106. The processors 102 may receive a radio signal including a second information / signal via the transceivers 106, and then store the information obtained by processing the second information / signal in the memories 104. The memories 104 may be connected to the processors 102 and may store various information relating to the operation of the processors 102. For example, one or more memories 104 may store software code including commands for performing part or all of the processing controlled by one or more processors 102, or for performing the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed herein. Here, one or more processors 102 and one or more memories 104 may be part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). One or more transceivers 106 may be connected to one or more processors 102 and transmit and / or receive radio signals via one or more antennas 108. Each transceiver 106 may include a transmitter and / or a receiver. One or more transceivers 106 may be used interchangeably with one or more radio frequency (RF) units. In this disclosure, a wireless device may represent a communication modem / circuit / chip.

[0238] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may additionally include one or more transceivers 206 and / or one or more antennas 208. The processors 202 may control the memories 204 and / or the transceivers 206, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed herein. For example, the processors 202 may process information in the memories 204 to generate a third message / signal, and subsequently transmit a radio signal including the third message / signal via the transceivers 206. The processors 202 may receive a radio signal including a fourth message / signal via the transceivers 106, and then store the information obtained by processing the fourth message / signal in the memories 204. The memories 204 may be connected to the processors 202 and may store various information relating to the operation of the processors 202. For example, one or more memories 204 may store software code including commands for performing part or all of the processing controlled by one or more processors 202, or for performing the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document. Here, one or more processors 202 and one or more memories 204 may be part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). One or more transceivers 206 may be connected to one or more processors 202 and transmit and / or receive radio signals via one or more antennas 208. Each transceiver 206 may include a transmitter and / or a receiver. One or more transceivers 206 may be used interchangeably with one or more RF units. In this disclosure, a wireless device may represent a communication modem / circuit / chip.

[0239] The hardware elements of wireless devices 100 and 200 will now be described in more detail. One or more protocol layers may be implemented, but are not limited to, by one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 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, proposals, methods, and / or operational flows disclosed in this document. One or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed in this document. One or more processors 102 and 202 may generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed in this document, and provide the generated signals to one or more transceivers 106 and 206. One or more processors 102 and 202 may receive signals (e.g., baseband signals) from one or more transceivers 106 and 206 and acquire PDUs, SDUs, messages, control information, data, or information in accordance with the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document.

[0240] One or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field-programmable gate arrays (FPGAs) may be included in one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be implemented using firmware or software, and such firmware or software may be configured to include modules, processes, or functions. Firmware or software configured to perform the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be included in one or more processors 102 and 202 or stored in one or more memories 104 and 204, thereby being driven by one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be implemented using software or firmware in the form of code, commands, and / or command sets.

[0241] One or more memories 104 and 204 may be connected to one or more processors 102 and 202 and may store various types of data, signals, messages, information, programs, code, instructions, and / or commands. One or more memories 104 and 204 may be composed of read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard drives, registers, cache memory, computer-readable storage media, and / or combinations thereof. One or more memories 104 and 204 may be located internally and / or externally to one or more processors 102 and 202. One or more memories 104 and 204 may be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0242] One or more transceivers 106 and 206 may transmit user data, control information, and / or radio signals / channels mentioned in the methods and / or operating procedures of this document to one or more other devices. One or more transceivers 106 and 206 may receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or operating procedures disclosed in this document from one or more other devices. For example, one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202 and may transmit and receive radio signals. For example, one or more processors 102 and 202 may perform control such that one or more transceivers 106 and 206 may transmit user data, control information, or radio signals to one or more other devices. One or more processors 102 and 202 may perform control such that one or more transceivers 106 and 206 may receive user data, control information, or radio signals from one or more other devices. One or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 may be configured to transmit and receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or operational procedures disclosed in this document through one or more antennas 108 and 208. In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 may convert received radio signals / channels, etc., from RF band signals to baseband signals for processing using one or more processors 102 and 202. One or more transceivers 106 and 206 may convert the processed user data, control information, radio signals / channels, etc., from baseband signals to RF band signals. For this purpose, one or more transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0243] Figure 17 A signal processing circuit for transmitting signals according to an embodiment of the present disclosure is shown.

[0244] Reference Figure 17 The signal processing circuit (1000) may include a scrambler (1010), a modulator (1020), a layer mapper (1030), a pre-encoder (1040), a resource mapper (1050), and a signal generator (1060). It can perform... Figure 17 Operations / functions, but not limited to Figure 16 The processors (102, 202) and / or transceivers (106, 206) can be used. Figure 16Implemented by processors (102, 202) and / or transceivers (106, 206) Figure 17 Hardware components. For example, it can be achieved through... Figure 16 The processors (102, 202) implement boxes 1010 to 1060. Alternatively, they can be implemented using... Figure 16 The processors (102, 202) implement boxes 1010 to 1050, and can be used to... Figure 16 The transceivers (106, 206) are used to implement the frame 1060.

[0245] Can be via Figure 17 The signal processing circuit (1000) converts the codewords into radio signals. In this document, a codeword is a sequence of encoded bits for an information block. The information block may include a transport block (e.g., a UL-SCH transport block, a DL-SCH transport block). Radio signals can be transmitted via various physical channels (e.g., PUSCH and PDSCH).

[0246] Specifically, the codeword can be converted into a scrambled bit sequence by scrambler 1010. The scrambling sequence used for scrambling can be generated based on an initial value, which may include the ID information of the wireless device. The scrambled bit sequence can be modulated into a modulation symbol sequence by modulator 1020. The modulation scheme may include pi / 2-binary phase shift keying (pi / 2-BPSK), m-phase shift keying (m-PSK), and m-quadrature amplitude modulation (m-QAM). The complex modulation symbol sequence can be mapped to one or more transmission layers by layer mapper 1030. The modulation symbols of each transmission layer can be mapped (precoded) to one or more corresponding antenna ports by precoder 1040. The output z of precoder 1040 can be obtained by multiplying the output y of layer mapper 1030 by an N*M precoding matrix W. Here, N is the number of antenna ports, and M is the number of transmission layers. Precoder 1040 can perform precoding after performing transform precoding (e.g., DFT) for the complex modulation symbols. Alternatively, the precoder 1040 can perform precoding without performing transform precoding.

[0247] Resource mapper 1050 maps modulation symbols for each antenna port to time-frequency resources. Time-frequency resources may include multiple symbols in the time domain (e.g., CP-OFDMA symbols and DFT-s-OFDMA symbols) and multiple subcarriers in the frequency domain. Signal generator 1060 can generate radio signals from the mapped modulation symbols, and the generated radio signals can be transmitted to other devices via each antenna. For this purpose, signal generator 1060 may include an inverse fast Fourier transform (IFFT) module, a cyclic prefix (CP) inserter, a digital-to-analog converter (DAC), and an up-converter.

[0248] Can be with Figure 17 The signal processing procedures (1010-1060) are configured in the reverse manner for the signal processing procedures used to receive signals in a wireless device. For example, a wireless device (e.g., Figure 16 The receiver (e.g., 100, 200) can receive radio signals from the outside via the antenna port / transceiver. The received radio signals can be converted into baseband signals using a signal recovery unit. For this purpose, the signal recovery unit may include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a Fast Fourier Transform (FFT) module. Next, the baseband signals can be recovered into codewords through a resource demapping process, a post-encoding process, a demodulation processor, and a descrambling process. The codewords can be recovered into the original information blocks through decoding. Therefore, the signal processing circuitry (not illustrated) used for receiving signals may include a signal recovery unit, a resource demapping unit, a post-encoder, a demodulator, a descrambler, and a decoder.

[0249] Figure 18 Another example of a wireless device according to an embodiment of this disclosure is shown. The wireless device can be implemented in various forms depending on the use case / service (see reference). Figure 15 ).

[0250] Reference Figure 18 The wireless devices (100, 200) can correspond to Figure 16 The wireless devices (100, 200) can be configured using various elements, components, units / parts, and / or modules. For example, each of the wireless devices (100, 200) may include a communication unit (110), a control unit (120), a memory unit (130), and additional components (140). The communication unit may include a communication circuit (112) and one or more transceivers (114). For example, the communication circuit (112) may include... Figure 16 One or more processors (102, 202) and / or one or more memories (104, 204). For example, transceiver (114) may include one or more transceivers. Figure 16The device comprises one or more transceivers (106, 206) and / or one or more antennas (108, 208). The control unit (120) is electrically connected to the communication unit (110), memory (130), and additional components (140), and controls the overall operation of the wireless device. For example, the control unit (120) may control the electrical / mechanical operation of the wireless device based on programs / codes / commands / information stored in the memory unit (130). The control unit (120) may transmit information stored in the memory unit (130) to an external source (e.g., another communication device) via the communication unit (110) through a wireless / wired interface, or store information received from an external source (e.g., another communication device) via the communication unit (110) through a wireless / wired interface in the memory unit (130).

[0251] The additional component (140) can be configured in various ways depending on the type of wireless device. For example, the additional component (140) may include at least one of a power unit / battery, an input / output (I / O) unit, a drive unit, and a computing unit. The wireless device can be implemented in, but is not limited to, the following forms: robot ( Figure 15 100a), vehicles ( Figure 15 100b-1 and 100b-2), XR device ( Figure 15 100c), handheld device ( Figure 15 100d), home appliances ( Figure 15 100e), IoT devices ( Figure 15 100f), digital broadcasting terminals, holographic devices, public safety devices, MTC devices, medical devices, fintech devices (or financial devices), security devices, climate / environmental devices, AI servers / devices ( Figure 15 400), BS ( Figure 15 (e.g., 200), network nodes, etc. Depending on the use case / service, wireless devices can be used in mobile or fixed locations.

[0252] exist Figure 18In the wireless devices (100, 200), all components, parts, units / sections, and / or modules can be connected to each other via wired interfaces, or at least partially via communication units (110). For example, in each of the wireless devices (100, 200), the control unit (120) and the communication unit (110) can be connected via a wired connection, and the control unit (120) and the first unit (e.g., 130, 140) can be wirelessly connected via the communication unit (110). Each component, part, unit / section, and / or module within the wireless devices (100, 200) may also include one or more components. For example, the control unit (120) may be constructed using a collection of one or more processors. As an example, the control unit (120) may be constructed using a collection of communication control processors, application processors, electronic control units (ECUs), graphics processing units, and memory control processors. As another example, memory (130) can be constructed using random access memory (RAM), dynamic RAM (DRAM), read-only memory (ROM), flash memory, volatile memory, non-volatile memory and / or combinations thereof.

[0253] The implementation will be described in detail below with reference to the accompanying drawings. Figure 18 Examples.

[0254] Figure 19 A handheld device according to an embodiment of the present disclosure is illustrated. The handheld device may include a smartphone, smartpad, wearable device (e.g., a smartwatch or smart glasses), or portable computer (e.g., a laptop). The handheld device may be referred to as a mobile station (MS), user terminal (UT), mobile subscriber station (MSS), subscriber station (SS), advanced mobile station (AMS), or wireless terminal (WT).

[0255] Reference Figure 19 The handheld device (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a memory unit (130), a power supply unit (140a), an interface unit (140b), and an I / O unit (140c). The antenna unit (108) may be configured as part of the communication unit (110). Blocks 110 to 130 / 140a to 140c correspond to respectively Figure 18 The frame is 110 to 130 / 140.

[0256] Communication unit 110 can send and receive signals (e.g., data signals and control signals) to and from other wireless devices or BSs. Control unit 120 can perform various operations by controlling the constituent elements of handheld device 100. Control unit 120 may include an application processor (AP). Memory unit 130 can store data / parameters / programs / codes / commands required to drive handheld device 100. Memory unit 130 can store input / output data / information. Power supply unit 140a can supply power to handheld device 100 and includes wired / wireless charging circuitry, a battery, etc. Interface unit 140b can support connection of handheld device 100 to other external devices. Interface unit 140b may include various ports for connecting to external devices (e.g., audio I / O ports and video I / O ports). I / O unit 140c can input or output user-input video information / signals, audio information / signals, data, and / or information. I / O unit 140c may include a camera, microphone, user input unit, display unit 140d, speaker, and / or haptic module.

[0257] For example, in the case of data communication, I / O unit 140c can acquire user input information / signals (e.g., touch, text, voice, image, or video), and the acquired information / signals can be stored in memory unit 130. Communication unit 110 can convert the information / signals stored in memory into radio signals and transmit the converted radio signals directly to other wireless devices or to the BS. Communication unit 110 can receive radio signals from other wireless devices or the BS, and then recover the received radio signals into the original information / signals. The recovered information / signals can be stored in memory unit 130 and can be output in various types (e.g., text, voice, image, video, or haptic feedback) through I / O unit 140.

[0258] Figure 20 A vehicle or autonomous vehicle according to an embodiment of this disclosure is shown. The vehicle or autonomous vehicle can be implemented using mobile robots, automobiles, trains, manned / unmanned aerial vehicles (AVs), ships, etc.

[0259] Reference Figure 20 The vehicle or autonomous vehicle (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a drive unit (140a), a power supply unit (140b), a sensor unit (140c), and an autonomous driving unit (140d). The antenna unit (108) may be configured as part of the communication unit (110). Boxes 110 / 130 / 140a to 140d correspond to respectively Figure 18 The frame size is 110 / 130 / 140.

[0260] Communication unit 110 can send and receive signals (e.g., data signals and control signals) to and from external devices such as other vehicles, BS (e.g., gNB and roadside units), and servers. Control unit 120 can perform various operations by controlling elements of the vehicle or autonomous vehicle 100. Control unit 120 may include electronic control unit (ECU). Drive unit 140a can cause the vehicle or autonomous vehicle 100 to move on the road. Drive unit 140a may include engine, motor, transmission system, wheels, brakes, steering mechanism, etc. Power supply unit 140b can supply power to the vehicle or autonomous vehicle 100 and may include wired / wireless charging circuitry, battery, etc. Sensor unit 140c can acquire vehicle status, external environment information, user information, etc. Sensor unit 140c may include inertial measurement unit (IMU) sensors, collision sensors, wheel sensors, speed sensors, slope sensors, weight sensors, heading sensors, position modules, vehicle forward / reverse sensors, battery sensors, fuel sensors, tire sensors, steering sensors, temperature sensors, humidity sensors, ultrasonic sensors, lighting sensors, pedal position sensors, etc. Autonomous driving unit 140d can implement technologies for maintaining the vehicle's lane, technologies for automatically adjusting speed (e.g., adaptive cruise control), technologies for autonomously driving along a defined path, and technologies for automatically setting a route when a destination is set, etc.

[0261] For example, communication unit 110 can receive map data, traffic information data, etc., from an external server. Autonomous driving unit 140d can generate autonomous driving paths and driving plans from the acquired data. Control unit 120 can control drive unit 140a, enabling the vehicle or autonomous vehicle 100 to move along the autonomous driving path according to the driving plan (e.g., speed / direction control). During autonomous driving, communication unit 110 can periodically or non-periodically acquire the latest traffic information data from an external server and acquire surrounding traffic information data from neighboring vehicles. During autonomous driving, sensor unit 140c can acquire vehicle status and / or surrounding environment information. Autonomous driving unit 140d can update the autonomous driving path and driving plan based on newly acquired data / information. Communication unit 110 can transmit information about vehicle location, autonomous driving path, and / or driving plan to an external server. The external server can predict traffic information data using AI technology, etc., based on information collected from the vehicle or autonomous vehicle, and provide the predicted traffic information data to the vehicle or autonomous vehicle.

[0262] The claims in this specification can be combined in various ways. For example, technical features in the method claims of this specification can be combined to implement or perform in a device, and technical features in the device claims can be combined to implement or perform in a method. Additionally, technical features in one or more method claims and one or more device claims can be combined to implement or perform in a device.

Claims

1. A method for performing wireless communication by a first device, the method comprising the steps of: Receive TDD-UL-DL configuration information from the base station, including information related to the first time slot pattern and information related to the second time slot pattern. The information related to the first time slot pattern includes information related to the period of the first time slot pattern and information related to the number of first UL resources. The information related to the second time slot pattern includes information related to the period of the second time slot pattern and information related to the number of second UL resources; The granularity-related value is determined based on i) the period of the first time slot pattern, ii) the period of the second time slot pattern and iii) the first subcarrier spacing SCS associated with SL communication; Based on i) the number of the first UL resources, ii) the number of the second UL resources, and iii) the granularity-related value, a value related to the number of first sub-link SL time slots and the number of second SL time slots is generated, wherein the first SL time slot is related to the first time slot pattern, and the second SL time slot is related to the second time slot pattern; and The Physical Sublink Broadcast Channel (PSBCH) is sent to the second device, including information related to the value associated with the number of the first SL time slots and the number of the second SL time slots. The number of the first SL time slot and the number of the second SL time slot are represented based on the cells associated with the second SCS. The values ​​in the PSBCH related to the number of the first SL slots and the number of the second SL slots are represented by 7 bits, and The second SCS is obtained based on a value obtained by dividing the first SCS by the value associated with the granularity.

2. The method of claim 1, wherein, Based on the fact that the sum of the periods of the first time slot pattern and the second time slot pattern is 4ms and the first SCS is 120kHz, the value related to the granularity is 2.

3. The method of claim 1, wherein, Based on the fact that the sum of the periods of the first time slot pattern and the second time slot pattern is 5ms and the first SCS is 120kHz, the value related to the granularity is 2.

4. The method of claim 1, wherein, Based on the fact that the period of the first time slot pattern is 5ms, the period of the second time slot pattern is 5ms, and the first SCS is 60kHz, the value related to the granularity is 2.

5. The method of claim 1, wherein, Based on the fact that the period of the first time slot pattern is 10ms, the period of the second time slot pattern is 10ms, and the first SCS is 30kHz, the value related to the granularity is 2.

6. The method of claim 1, wherein, Based on the fact that the period of the first time slot pattern is 5ms, the period of the second time slot pattern is 5ms, and the first SCS is 120kHz, the value related to the granularity is 4.

7. The method of claim 1, wherein, Based on the fact that the period of the first time slot pattern is 10ms, the period of the second time slot pattern is 10ms, and the first SCS is 60kHz, the value related to the granularity is 4.

8. The method of claim 1, wherein, Based on the period of the first time slot pattern being 10ms, the period of the second time slot pattern being 10ms, and the first SCS being 120kHz, the value related to the granularity is 8.

9. The method of claim 1, wherein, Information related to the first UL resource includes the number of time slots associated with the first UL resource, and Information related to the second UL resource includes the number of time slots associated with the second UL resource.

10. The method of claim 1, wherein, The value associated with the number of the first SL slots and the number of the second SL slots is represented based on the maximum number of SL slots that can exist in the time period of the first slot pattern, the maximum number being represented based on the cells associated with the second SCS.

11. The method of claim 10, wherein, The value associated with the number of the first SL time slots and the number of the second SL time slots is expressed as the sum of the following: The number of first SL slots represented by cells associated with the second SCS; and The value is obtained by multiplying the maximum number of SL slots that can exist in the time period of the first slot pattern represented by the cell associated with the second SCS by 1.

12. The method of claim 10, wherein, The value associated with the number of the first SL time slots and the number of the second SL time slots is expressed as the sum of the following: The value obtained by subtracting 1 from the number of the first SL slots represented by the cells associated with the second SCS; and The value is obtained by multiplying the maximum number of SL slots that can exist in the time period of the first slot pattern represented by the cell associated with the second SCS by the number of the second SL slots represented by the cell associated with the second SCS.

13. A first means for performing wireless communication, the first means comprising: One or more memories, wherein the one or more memories store instructions; One or more transceivers; as well as One or more processors, said one or more processors connected to said one or more memories and said one or more transceivers, wherein said one or more processors execute said instructions to: Receive TDD-UL-DL configuration information from the base station, including information related to the first time slot pattern and information related to the second time slot pattern. The information related to the first time slot pattern includes information related to the period of the first time slot pattern and information related to the number of first UL resources. The information related to the second time slot pattern includes information related to the period of the second time slot pattern and information related to the number of second UL resources; The granularity-related value is determined based on i) the period of the first time slot pattern, ii) the period of the second time slot pattern and iii) the first subcarrier spacing SCS associated with SL communication; Based on i) the number of the first UL resources, ii) the number of the second UL resources, and iii) the granularity-related value, a value related to the number of first sub-link SL time slots and the number of second SL time slots is generated, wherein the first SL time slot is related to the first time slot pattern, and the second SL time slot is related to the second time slot pattern; and The Physical Sublink Broadcast Channel (PSBCH) is sent to the second device, including information related to the value associated with the number of the first SL time slots and the number of the second SL time slots. The number of the first SL time slot and the number of the second SL time slot are represented based on the cells associated with the second SCS. The values ​​in the PSBCH related to the number of the first SL slots and the number of the second SL slots are represented by 7 bits, and The second SCS is obtained based on a value obtained by dividing the first SCS by the value associated with the granularity.

14. An apparatus suitable for controlling a first user equipment (UE), the apparatus comprising: One or more processors; as well as One or more memories, operatively connectable to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to: Receive TDD-UL-DL configuration information from the base station, including information related to the first time slot pattern and information related to the second time slot pattern. The information related to the first time slot pattern includes information related to the period of the first time slot pattern and information related to the number of first UL resources. The information related to the second time slot pattern includes information related to the period of the second time slot pattern and information related to the number of second UL resources; The granularity-related value is determined based on i) the period of the first time slot pattern, ii) the period of the second time slot pattern, and iii) the first subcarrier spacing (SCS) associated with SL communication. Based on i) the number of the first UL resources, ii) the number of the second UL resources, and iii) the granularity-related value, a value related to the number of first sub-link SL time slots and the number of second SL time slots is generated, wherein the first SL time slot is related to the first time slot pattern, and the second SL time slot is related to the second time slot pattern; and The Physical Sublink Broadcast Channel (PSBCH) is sent to the second UE, including information related to the value associated with the number of the first SL slots and the number of the second SL slots. The number of the first SL time slot and the number of the second SL time slot are represented based on the cells associated with the second SCS. The values ​​in the PSBCH related to the number of the first SL slots and the number of the second SL slots are represented by 7 bits, and The second SCS is obtained based on a value obtained by dividing the first SCS by the value associated with the granularity.

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