Method and apparatus for transmitting transport blocks in nr v2x

Abstract

A method for a first apparatus to perform wireless communication is provided. The method can include receiving a configured grant from a base station, transmitting a first transport block on a first sidelink resource allocated by the configured grant in association with a first hybrid automatic repeat request (HARQ) process ID, a failure of the transmission of the first transport block, and transmitting a second transport block on a second sidelink resource allocated by the configured grant in association with a second HARQ process ID based on the second HARQ process ID being the same as the first HARQ process ID.

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, as more and more communication devices require larger communication capacity, there is a need for enhanced mobile broadband communication compared to traditional radio access technologies (RATs). Therefore, communication system designs for UEs or services that are sensitive to reliability and latency are already being discussed, and next-generation radio access technologies that enhance mobile broadband communication, massive MTC, and ultra-reliable low-latency communication (URLLC) can be referred to as new RATs (radio access technologies) or NR (new radios).

[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 dynamic vehicle status information such as direction and speed, static vehicle data such as size, and basic vehicle information such as external lighting status and route details. For example, a UE can broadcast a CAM, and the CAM latency can be less than 100ms. For example, a UE can generate a DENM and send it to another UE in unexpected situations such as vehicle malfunction or accidents. 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 move together by dynamically forming groups. For example, to perform platooning operations, vehicles belonging to the group can receive periodic data from the lead vehicle. For example, vehicles belonging to the group can use periodic data to decrease or increase the interval between vehicles.

[0010] For example, based on advanced driving, vehicles can be semi-autonomous or fully autonomous. For instance, each vehicle can adjust its trajectory or maneuver 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 nearby vehicles.

[0011] For example, based on extended sensors, raw data, processed data, or real-time video data acquired through local sensors can be exchanged between UEs (User Equipment) and / or V2X application servers, including vehicles, logical entities, and pedestrians. Therefore, for example, vehicles can identify a further improved environment compared to environments detected using self-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, if the route is predictable (e.g., public transportation), cloud-based driving can be used for the operation or control of a remote vehicle. Additionally, for example, access to a cloud-based backend service platform can be considered for remote driving.

[0013] Furthermore, in NR-based V2X communication, schemes 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 Purpose

[0015] In addition, UEs that have not yet completed the transmission of the first transport block (TB) based on a specific secondary link Hybrid Automatic Repeat Request (HARQ) process ID need to perform the transmission of the second TB through a Mode 1 Configuration Grant (CG) resource with the same secondary link HARQ process ID, and the UE needs to determine which TB to transmit.

[0016] Technical solution

[0017] In one implementation method

[0018] The effect of this disclosure

[0019] User equipment (UE) can perform SL communication efficiently. Attached Figure Description

[0020] Figure 1 This is a diagram used to describe NR-based V2X communication compared to the RAT-based V2X communication previously used.

[0021] Figure 2 The structure of an NR system according to an embodiment of the present disclosure is shown.

[0022] Figure 3 The functional division between NG-RAN and 5GC according to an embodiment of this disclosure is shown.

[0023] Figure 4 A radio protocol architecture according to an embodiment of this disclosure is shown.

[0024] Figure 5 The structure of an NR system according to an embodiment of the present disclosure is shown.

[0025] Figure 6 The structure of a time slot for an NR frame according to an embodiment of the present disclosure is shown.

[0026] Figure 7 An example of a BWP according to an embodiment of this disclosure is shown.

[0027] Figure 8 A radio protocol architecture for SL communication according to an embodiment of this disclosure is shown.

[0028] Figure 9 A UE performing V2X or SL communication according to an embodiment of this disclosure is shown.

[0029] Figure 10 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.

[0030] Figure 11 Three broadcast types according to embodiments of this disclosure are shown.

[0031] Figure 12 An example is shown whereby the UE reports a Hybrid Automatic Repeat Request (HARQ) feedback message to the base station if the UE fails to transmit any periodic secondary link information.

[0032] Figure 13 The process of a transmitting UE identifying the location of a transmitting resource based on control information, according to an embodiment of the present disclosure, is illustrated.

[0033] Figure 14 An example is shown of a transmitting UE performing TB transmission or new TB transmission by using mode 1CG resources in different cycles or adjacent cycles, based on an embodiment of this disclosure.

[0034] Figure 15 The process of a transmitting UE transmitting a second transport block based on a first transport block transmission failure and a HARQ process ID, according to an embodiment of the present disclosure, is illustrated.

[0035] Figure 16 An example is shown where the transmission of a first transport block fails and a second transport block is transmitted, based on an embodiment of this disclosure.

[0036] Figure 17 The process of a transmitting UE retransmitting a second transport block based on dynamic authorization, according to an embodiment of this disclosure, is illustrated.

[0037] Figure 18 An example is shown of a transmitting UE determining CG resources related to DG based on CG index information according to an embodiment of this disclosure.

[0038] Figure 19 A method for transmitting a second transport block based on a first apparatus according to an embodiment of the present disclosure is shown.

[0039] Figure 20 A method is shown for a second device, based on an embodiment of the present disclosure, to receive sublink information from a first device using index information of a CG via resources allocated by a DG.

[0040] Figure 21 A communication system 1 according to an embodiment of the present disclosure is shown.

[0041] Figure 22 A wireless device according to an embodiment of the present disclosure is shown.

[0042] Figure 23 A signal processing circuit for transmitting signals according to an embodiment of the present disclosure is shown.

[0043] Figure 24 A wireless device according to an embodiment of the present disclosure is shown.

[0044] Figure 25 A handheld device according to an embodiment of the present disclosure is shown.

[0045] Figure 26 A vehicle or autonomous vehicle according to an embodiment of this disclosure is shown. Detailed Implementation

[0046] 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".

[0047] 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".

[0048] 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".

[0049] 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".

[0050] 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".

[0051] The technical features described in one of the accompanying drawings in this disclosure can be implemented individually or simultaneously.

[0052] 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.

[0053] 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).

[0054] 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.

[0055] 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.

[0056] Reference Figure 2The Next Generation Radio Access Network (NG-RAN) may include a BS20 that provides user plane and control plane protocol termination to UE 10. For example, the BS20 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, the 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.

[0057] Figure 2 The implementation example illustrates the case involving only the gNB. BS20s can interconnect via the Xn interface. BS20s can interconnect via the fifth-generation (5G) core network (5GC) and the NG interface. More specifically, BS20s can connect to the Access and Mobility Management Function (AMF) 30 via the NG-C interface and to the User Plane Function (UPF) 30 via the NG-U interface.

[0058] Figure 3 The functional division between NG-RAN and 5GC according to an embodiment of this disclosure is shown.

[0059] Reference Figure 3 The gNB can provide functions such as inter-cell radio resource management (inter-cell RRM), radio bearer (RB) control, connection mobility control, radio access control, measurement configuration and specification, and dynamic resource allocation. The AMF can provide functions such as non-access stratum (NAS) security and idle-state mobility processing. The UPF can provide functions such as mobility anchoring and Protocol Data Unit (PDU) processing. The Session Management Function (SMF) can provide functions such as user equipment (UE) Internet Protocol (IP) address allocation and PDU session control.

[0060] 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. Here, 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.

[0061] Figure 4 A radio protocol architecture according to an embodiment of this disclosure is shown. Figure 4The implementation methods can be combined with various implementation methods of this disclosure. Specifically, Figure 4 (a) shows the radio protocol architecture for the user plane, and Figure 4 Figure (b) shows the radio protocol architecture for the control plane. The user plane corresponds to the protocol stack for user data transmission, and the control plane corresponds to the protocol stack for control signal transmission.

[0062] Reference Figure 4 The 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.

[0063] Data is transmitted between different PHY 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.

[0064] 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.

[0065] 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).

[0066] The Radio Resource Control (RRC) layer is defined only in the control plane. Furthermore, the RRC layer performs control functions related to the configuration, reconfiguration, and release of physical, transport, and logical channels associated with radio bearers. An RB refers to the logical path provided by Layer 1 (i.e., the PHY layer) and Layer 2 (i.e., the MAC layer, RLC layer, and PDCP layer) for transmitting data between the UE and the network.

[0067] 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.

[0068] 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.

[0069] RB configuration refers to the processing used to specify radio protocol layers 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] A physical channel comprises multiple OFDM symbols in the time domain and multiple subcarriers in the frequency domain. A subframe comprises multiple OFDM symbols in the time domain. A resource block is a unit of resource allocation and consists of multiple subcarriers and multiple OFDM symbols. Additionally, each subframe may use a specific subcarrier of a specific OFDM symbol (e.g., the first OFDM symbol) of the corresponding subframe of the Physical Downlink Control Channel (PDCCH), i.e., the L1 / L2 control channel. The Transmission Time Interval (TTI) refers to the unit of time for subframe transmission.

[0074] Figure 5 The structure of an NR system according to an embodiment of this disclosure is shown. Figure 5 The implementation methods can be combined with various implementation methods of this disclosure.

[0075] Reference Figure 5 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).

[0076] 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).

[0077] 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 ).

[0078] [Table 1]

[0079] <![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

[0080] Table 2 shows examples of the number of symbols per slot, the number of slots per frame, and the number of slots per subframe, according to SCS, when using extended CP.

[0081] [Table 2]

[0082] <![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

[0083] 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.

[0084] 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.

[0085] 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).

[0086] [Table 3]

[0087] Frequency range specification Corresponding frequency range Subcarrier spacing (SCS) FR1 450MHz-6000MHz 15, 30, 60kHz FR2 24250MHz-52600MHz 60, 120, 240kHz

[0088] 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).

[0089] [Table 4]

[0090] Frequency range specification Corresponding frequency range Subcarrier spacing (SCS) FR1 410MHz-7125MHz 15, 30, 60kHz FR2 24250MHz-52600MHz 60, 120, 240kHz

[0091] Figure 6 The structure of a time slot for an NR frame according to an embodiment of this disclosure is shown.

[0092] Reference Figure 6 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.

[0093] 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.

[0094] Furthermore, the radio interface between the UE and another UE, or between the UE and the network, may include layers L1, L2, and L3. In various embodiments of this disclosure, layer L1 may refer to the physical layer. Additionally, for example, layer L2 may refer to at least one of the MAC layer, RLC layer, PDCP layer, and SDAP layer. Additionally, for example, layer L3 may refer to the RRC layer.

[0095] The bandwidth portion (BWP) and carrier will be described in detail below.

[0096] 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.

[0097] When using bandwidth adaptation (BA), the user equipment (UE) does not need to have the same (or larger) receive and transmit bandwidth as the cell bandwidth, and the UE's receive and transmit bandwidth can be controlled (or adjusted). For example, the UE can receive information / configuration for bandwidth control (or adjustment) from the network / base station. In this case, bandwidth control (or adjustment) can be performed based on the received information / configuration. For example, bandwidth control (or adjustment) can include reducing / expanding bandwidth, changing the location of bandwidth, or changing the subcarrier spacing of bandwidth.

[0098] For example, bandwidth can be reduced during periods of low activity to save power. For example, the location of bandwidth can be repositioned (or moved) from the frequency domain to enhance scheduling flexibility. For example, the subcarrier spacing of the bandwidth can be changed to authorize different services. A subset of the total cell bandwidth can be referred to as the Bandwidth Part (BWP). BA (Balanced Access) can be performed when the base station / network configures the BWP for the UE and when the base station / network notifies the UE of the currently active BWPs within the BWP.

[0099] For example, a BWP can be one of an active BWP, an initial BWP, and / or a default BWP. For example, a UE cannot monitor downlink radio link quality in a DL BWP other than the active DL BWP within the primary cell (PCell). For example, a UE cannot receive PDCCH, PDSCH, or CSI-RS (except RRM) from outside an active DL BWP. For example, a UE cannot trigger Channel State Information (CSI) reports for an inactive DL BWP. For example, a UE cannot transmit PUCCH or PUSCH from outside an inactive DL BWP. For example, in the downlink case, the initial BWP can be given as a continuous set of RBs for the RMSI CORESET (configured by the PBCH). For example, in the uplink case, the initial BWP can be given by the 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. For energy saving, if the UE cannot detect DCI within a predetermined time period, the UE can switch its active BWP to the default BWP.

[0100] Furthermore, a Baseline Window (BWP) can be defined for an SL (Signal Channel). 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 within a specific BWP, and a receiving UE can receive an SL channel or SL signal within the same 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 the SL BWP from the base station / network. SL BWPs can be configured (in advance) for NR V2X UEs and RRC_IDLE UEs operating outside coverage. For UEs operating in RRC_CONNECTED mode, at least one SL BWP can be activated within a carrier.

[0101] Figure 7 An example of a BWP according to an embodiment of this disclosure is shown. Figure 7The implementation methods can be combined with various implementation methods of this disclosure. It is assumed that in... Figure 7 In this implementation, the number of BWPs is 3.

[0102] Reference Figure 7 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 PRB can be a resource block numbered within each BWP. Point A can indicate a common reference point for the resource block grid.

[0103] It can be determined by point A and the offset (N) relative to point A. start BWP ) and bandwidth (N size BWP The BWP is configured using a parameter set. For example, point A can be an external reference point of 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, the offset can be the PRB distance between the lowest subcarrier in a given parameter set and point A. For example, the bandwidth can be the number of PRBs in a given parameter set.

[0104] The following text will describe V2X or SL communication.

[0105] Figure 8 A radio protocol architecture for SL communication according to an embodiment of this disclosure is shown. Figure 8 The implementation methods can be combined with various implementation methods of this disclosure. More specifically, Figure 8 (a) shows the user plane protocol stack, and Figure 8 (b) shows the control plane protocol stack.

[0106] The secondary link synchronization signal (SLSS) and synchronization information will be described in detail below.

[0107] The 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 to obtain detailed synchronization and to detect the synchronization signal ID.

[0108] 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, application type related to SLSS, subframe offset, broadcast information, etc. For example, to evaluate PSBCH performance, in NR V2X, the PSBCH payload size can be 56 bits, including a 24-bit CRC.

[0109] 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.

[0110] Figure 9 A UE performing V2X or SL communication according to an embodiment of this disclosure is shown. Figure 9 The implementation methods can be combined with various implementation methods of this disclosure.

[0111] Reference Figure 9 In 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] The following section describes resource allocation in SL.

[0116] Figure 10 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 10 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.

[0117] For example, Figure 10 (a) illustrates UE operation associated with LTE transmission mode 1 or LTE transmission mode 3. Alternatively, for example, Figure 10 (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.

[0118] For example, Figure 10 (b) illustrates UE operation associated with LTE transmission mode 2 or LTE transmission mode 4. Alternatively, for example, Figure 10 (b) shows the UE operation associated with NR resource allocation mode 2.

[0119] Reference Figure 10 In (a) of this document, under 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 (more specifically, Downlink Control Information (DCI)), 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).

[0120] Reference Figure 10In (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.

[0121] Figure 11 Three broadcast types according to embodiments of this disclosure are shown. Figure 11 The implementation methods can be combined with various implementation methods of this disclosure. Specifically, Figure 11 (a) in the diagram illustrates broadcast SL communication. Figure 11 (b) shows unicast SL communication, and Figure 11 (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.

[0122] Furthermore, in this disclosure, for example, the transmitting UE (TX UE) may be a UE that transmits data to the (target) receiving UE (RX UE). For example, the TX UE may be a UE that performs PSCCH transmission and / or PSSCH transmission. Additionally / alternatively, for example, the TX UE may be a UE that transmits SL CSI-RS and / or SL CSI report request indicators to the (target) RX UE. Additionally / alternatively, for example, the TX UE may be a UE that transmits reference signals (e.g., PSCCH, PSSCH, etc.) on the (control) channel and / or on the (control) channel for SL RLM operation and / or SLRLF operation of the (target) RX UE.

[0123] Furthermore, in this disclosure, for example, the receiving UE (RX UE) may be a UE that sends SL HARQ feedback to the transmitting UE (TX UE) based on whether the decoding of data received from the TX UE was successful and / or whether the detection / decoding of the PSCCH (related to PSSCH scheduling) sent by the TX UE was successful. Alternatively, for example, the RX UE may be a UE that performs SL CSI transmission to the TX UE based on the SL CSI-RS and / or SL CSI report request indicator received from the TX UE. Alternatively, for example, the RX UE may be a UE that sends SL(L1) RSRP measurements to the TX UE based on (predefined) reference signals and / or SL(L1) Reference Signal Received Power (RSRP) report request indicators received from the TX UE. Alternatively, for example, the RX UE may be a UE that transmits data from the RX UE to the TX UE. Alternatively, for example, the RX UE may be a UE that performs SLRLM and / or SL RLF operations based on reference signals received from the TX UE on the (pre-configured) (control) channel and / or (control) channel.

[0124] Furthermore, in this disclosure, for example, when the RX UE sends SL HARQ feedback information for the PSSCH and / or PSCCH received from the TX UE, one or more of the following options may be considered. In this document, for example, one or more of the following options may be applied with limitation only if the RX UE successfully decodes / detects the PSCCH that schedules the PSSCH.

[0125] (1) Multicast HARQ feedback option 1: NACK information can only be sent to TX UE if RX UE fails to decode / receive PSSCH received from TX UE.

[0126] (2) Multicast HARQ feedback option 2: If the RX UE successfully decodes / receives the PSSCH received from the TX UE, it can send an ACK message to the TX UE, and if the RX UE fails to decode / receive the PSSCH, it can send a NACK message to the TX UE.

[0127] Furthermore, in this disclosure, for example, the TX UE may send one or more of the following information to the RX UE via an SCI. In this document, for example, the TX UE may send some or all of the following information to the RX UE via a first SCI and / or a second SCI.

[0128] - PSSCH (and / or PSCCH) related resource allocation information (e.g., location / number of time / frequency resources, resource reservation information (e.g., period)).

[0129] -SL CSI Report Request Indicator or SL(L1) Reference Signal Received Power (RSRP) (and / or SL(L1) Reference Signal Received Quality (RSRQ) and / or SL(L1) Reference Signal Strength Indicator (RSSI)) Report Request Indicator

[0130] - (on PSSCH) SL CSI Send Indicator (or SL(L1)RSRP (and / or SL(L1)RSRQ and / or SL(L1)RSSI) Message Send Indicator

[0131] Modulation and coding scheme (MCS) information

[0132] -TX power information

[0133] -L1 Destination ID information and / or L1 Source ID information

[0134] -SL HARQ process ID information

[0135] - New Data Indicator (NDI) information

[0136] -Redundant Version (RV) Information

[0137] - (Send service / packet related) QoS information (e.g., priority information)

[0138] - Information regarding the number of antenna ports used for (transmitting) SL CSI-RS or the SL CSI-RS transmit indicator.

[0139] - (Regarding the location (or distance range) information of the target RX UE or the location information of the TX UE requested by the SL HARQ feedback)

[0140] - Reference signal (e.g., DM-RS, etc.) information related to the decoding (and / or channel estimation) of data transmitted via PSSCH. Examples include information related to the mode of the (time-frequency) mapping resource of the DM-RS, rank information, antenna port index information, information about the number of antenna ports, etc.

[0141] Furthermore, in this disclosure, for example, since the TX UE can send SCI, a first SCI, and / or a second SCI to the RX UE via PSCCH, the PSCCH can be replaced / substituted by the SCI and / or the first SCI and / or the second SCI. Additionally / alternatively, the SCI can be replaced / substituted by the PSCCH and / or the first SCI and / or the second SCI. Additionally / alternatively, for example, since the TX UE can send a second SCI to the RX UE via PSSCH, the PSSCH can be replaced / substituted by the second SCI.

[0142] Furthermore, in this disclosure, for example, if the SCI configuration fields are divided into two groups considering the (relatively) high SCI payload size, then the first SCI including the first SCI configuration field group can be referred to as the first SCI, and the second SCI including the second SCI configuration field group can be referred to as the second SCI. Additionally, for example, the first SCI can be sent to the receiving UE via PSCCH. Additionally, for example, the second SCI can be sent to the receiving UE via (separate) PSCCH, or it can be carried over PSSCH and sent along with data.

[0143] Furthermore, in this disclosure, for example, the terms “configured / configured” or “defined / defined” can refer to (pre-)configuration from the base station or network (for each resource pool) (via predefined signaling (e.g., SIB, MAC, RRC, etc.)).

[0144] Furthermore, in this disclosure, for example, since the RLF is determined based on the out-of-synchronization (OOS) indicator or the synchronization (IS) indicator, the RLF can be replaced by the out-of-synchronization (OOS) indicator or the synchronization (IS) indicator.

[0145] Furthermore, in this disclosure, for example, an RB can be replaced / replaced by a subcarrier. Additionally, in this disclosure, for example, packets or traffic can be replaced / replaced by a TB or MAC PDU based on the transmission layer.

[0146] Furthermore, in this disclosure, CBG can be replaced / substituted by TB.

[0147] Furthermore, in this disclosure, for example, the source ID can be replaced / replaced by the destination ID.

[0148] Furthermore, in this disclosure, for example, an L1 ID can be replaced by an L2 ID. For example, an L1 ID can be an L1 source ID or an L1 destination ID. For example, an L2 ID can be an L2 source ID or an L2 destination ID.

[0149] Furthermore, in this disclosure, for example, the operation of sending a UE to reserve / select / determine retransmission resources may include: sending an operation of sending a UE to reserve / select / determine potential retransmission resources whose actual use will be determined based on SL HARQ feedback information received from the receiving UE.

[0150] Furthermore, in this disclosure, a sub-selection window may be replaced / alternate with a selection window and / or a set of resources pre-configured within the selection window, or vice versa.

[0151] Furthermore, in this disclosure, SL MODE 1 can refer to a resource allocation method or communication method in which the base station directly schedules SL transmission resources for the TX UE via predefined signaling (e.g., DCI or RRC messages). For example, SL MODE 2 can refer to a resource allocation method or communication method in which the UE independently selects SL transmission resources from a resource pool pre-configured or configured by the base station or network. For example, a UE performing SL communication based on SL MODE 1 can be referred to as MODE 1 UE or MODE 1 TX UE, and a UE performing SL communication based on SL MODE 2 can be referred to as MODE 2 UE or MODE 2 TX UE.

[0152] Furthermore, in this disclosure, for example, a Dynamic Grant (DG) can be replaced / substituted with a Configurable Grant (CG) and / or a Semi-Permanent Scheduled (SPS) Grant, or vice versa. For example, a DG can be replaced / substituted with a combination of CG and SPS Grants, or vice versa. For example, a CG can include at least one of Configurable Grant (CG) Type 1 and / or Configurable Grant (CG) Type 2. For example, in CG Type 1, the grant can be provided by RRC signaling and can be stored as a Configurable Grant. For example, in CG Type 2, the grant can be provided by PDCCH and can be stored or deleted as a Configurable Grant based on L1 signaling indicating whether the grant is enabled or disabled.

[0153] Furthermore, in this disclosure, a channel can be replaced by a signal, or vice versa. For example, transmitting / receiving a channel can include transmitting / receiving a signal.

[0154] Furthermore, in this disclosure, a broadcast can be replaced by at least one of unicast, multicast, and / or broadcast, or vice versa. For example, a broadcast type can be replaced by at least one of unicast, multicast, and / or broadcast, or vice versa. For example, a broadcast or broadcast type can include unicast, multicast, and / or broadcast.

[0155] Furthermore, in this disclosure, resources may be replaced / substituted with time slots or symbols, or vice versa. For example, resources may include time slots and / or symbols.

[0156] Furthermore, in this disclosure, for example, for ease of description, the (physical) channel used when the RX UE sends at least one of the following information to the TX UE may be referred to as PSFCH.

[0157] -SL HARQ feedback, SL CSI, SL(L1)RSRP

[0158] Furthermore, in this disclosure, the Uu channel may include a UL channel and / or a DL channel. For example, the UL channel may include PUSCH, PUCCH, etc. For example, the DL channel may include PDCCH, PDSCH, etc. For example, the SL channel may include PSCCH, PSSCH, PSFCH, PSBCH, etc.

[0159] Furthermore, in this disclosure, secondary link information may include at least one of secondary link messages, secondary link packets, secondary link services, secondary link data, secondary link control information, and / or secondary link transport blocks (TBs). For example, secondary link information may be sent via PSSCH and / or PSCCH.

[0160] Furthermore, in NR resource allocation mode 1 (hereinafter, mode 1), the UE can use multiple transmission resources scheduled by mode 1 configuration granting DCI (hereinafter, mode 1CG DCI) or mode 1 dynamic granting DCI (hereinafter, mode 1DG DCI), regardless of the initial / retransmission purpose associated with a transport block (hereinafter, TB). In this document, for example, if the waiting time requirement associated with the TB is met, the transmitting UE can perform an initial transmission or retransmission by using resources in a period adjacent to multiple scheduled transmission resources. For example, the UE can use resources allocated by mode 1CG DCI or mode 1DG DCI only for secondary link communications associated with a UE that has been pre-signed / configured. For example, a UE may use the resources allocated by Mode 1CG DCI or Mode 1DG DCI only for at least one of the following: secondary link communications related to QoS parameters, secondary link communications related to broadcast type (e.g., unicast, multicast, or broadcast), secondary link communications related to service type, secondary link communications related to L1 destination / source ID and / or L2 destination / source ID, or secondary link communications related to destination UEs that are pre-signed / configured via fields included in the DCI from the base station.

[0161] Furthermore, if the transmitting UE reports secondary link HARQ feedback information to the base station and predefined conditions are met, additional retransmission resources can be allocated to the transmitting UE via Mode 1DG DCI. In this document, for example, the predefined condition could be the transmitting UE reporting NACK / DTX information to the base station. For instance, if the transmitting UE reports secondary link HARQ feedback information (e.g., NACK / DTX information) received from the receiving UE to the base station via pre-configured PUCCH resources, additional retransmission resources can be allocated from the base station to the transmitting UE via Mode 1DG DCI.

[0162] In this document, for example, the base station can arbitrarily determine when to send the Mode 1DG DCI to the UE. For example, the base station can determine the time to send the Mode 1DG DCI to the UE at any time, either within a pre-configured time window, before the timer expires, or within the waiting time requirement of the relevant service.

[0163] Figure 12 An example is shown where the UE reports HARQ feedback information to the base station if it fails to transmit any periodic sublink information. Figure 13 The implementation methods can be combined with various implementation methods of this disclosure.

[0164] Reference Figure 12 If the transmitting UE fails to transmit secondary link information (TX#1 and TX#2), the transmitting UE can report the secondary link HARQ feedback information (e.g., NACK / DTX information) received from the receiving UE to the base station via pre-configured PUCCH resources. In this case, additional retransmission resources can be allocated from the base station to the transmitting UE via Mode 1DG DCI. If the transmitting UE receives Mode 1DG DCI from the base station in this scenario, the transmitting UE needs to clearly identify which periodic resource of Mode 1CG is associated with the additional retransmission resources allocated by the received Mode 1DG DCI. For example, the transmitting UE needs to clearly identify which periodic resource of Mode 1DG is associated with the additional retransmission resources allocated by the received Mode 1DG DCI.

[0165] Below, based on various embodiments of this disclosure, a method for a transmitting UE to identify the location of transmitting resources based on control information and an apparatus supporting the method will be described. In this disclosure, the secondary link HARQ process ID can refer to a HARQ process ID. Various embodiments of this disclosure can be extended to mode 2CG or mode 2DG.

[0166] Figure 13 The process of a transmitting UE identifying the location of a transmitting resource based on control information, according to an embodiment of the present disclosure, is illustrated. Figure 13The implementation methods can be combined with various implementation methods of this disclosure.

[0167] Reference Figure 13 In step S1310, the transmitting UE can send a resource request message or a HARQ feedback report to the base station. For example, the transmitting UE can send a message (e.g., SR / BSR) requesting additional allocation of secondary link retransmission resources to the base station via PUCCH. For example, the transmitting UE can send a report related to secondary link HARQ feedback information to the base station via PUCCH.

[0168] In step S1320, the base station may send control information related to the CG to the transmitting UE. In step S1330, the transmitting UE may identify or determine the CG resource based on the control information related to the CG received from the base station. In step S1340, the transmitting UE may send secondary link information to the receiving UE using the identified or determined CG resource. For example, the secondary link information may include secondary link data and / or control information that the transmitting UE will send. Steps S1320 to S1340 will be described in more detail below.

[0169] According to the implementation method, similar to the uplink configuration authorization operation of an NR system, the base station can derive or determine the sublink HARQ process ID associated with the mode 1 CG resource in a specific period based on a pre-configured formula. For example, the pre-configured formula may be Equation 1 below.

[0170] [Formula 1]

[0171] HARQ process ID=[floor(CURRENT_symbol / periodicity)]modulo nrofHARQ-Processes

[0172] Referring to Equation 1 above, for example, CURRENT_symbol could refer to SFN × numberOfSlotsPerFrame × numberOfSymbolsPerSlot + number of slots in the frame × numberOfSymbolsPerSlot + number of symbols in the slots. numberOfSlotsPerFrame could refer to the number of consecutive slots per frame. numberOfSymbolsPerSlot could refer to the number of consecutive symbols per slot. For example, Equation 1 could be a formula used to derive the HARQ process ID associated with the first symbol transmitted for uplink configuration authorization.

[0173] For example, the transmitting UE can receive a Mode 1DG DCI from the base station for allocating additional retransmission resources. For example, the base station can signal / send to the transmitting UE at least one of the following: secondary link HARQ process ID information associated with the Mode 1CG resource and the retransmission resource; index information associated with the CG and the retransmission resource; or New Data Indicator (NDI) information. For example, the base station can signal / send to the transmitting UE at least one of the following: secondary link HARQ process ID information associated with the Mode 1CG resource and the retransmission resource in a specific period; index information associated with the CG and the retransmission resource in a specific period; or New Data Indicator (NDI) information. The transmitting UE can identify or determine the Mode 1CG index and the Mode 1CG resource in the specific period targeted by the Mode 1DG DCI received from the base station. In this document, for example, the secondary link process ID associated with a Mode 1 CG resource can indicate / inform the link between the Mode 1 DG DCI used to allocate additional retransmission resources and the Mode 1 CG resource in a specific target period. For example, the secondary link process ID associated with a Mode 1 CG resource can be different from or independent of the secondary link process ID information indicated by the SCI.

[0174] Based on embodiments of this disclosure, the DCI associated with the DG can be DCI format 3_0. For example, the DCI associated with the DG can include a configuration index. For example, the configuration index can be 3 bits. For example, if the UE is configured to monitor the DCI using a Cyclic Redundancy Check (CRC) scrambled by a Scheduled Radio Network Temporary Identifier (SL-CS-RNTI) configured by the secondary link, the configuration index can be 3 bits.

[0175] Based on the implementation method, the transmitting UE can specify or set the secondary link HARQ process ID value indicated by the SCI to the secondary link HARQ process ID information associated with mode 1CG. For example, the transmitting UE can specify or set the secondary link HARQ process ID value indicated by the SCI to the secondary link HARQ process ID information associated with mode 1CG used for transmitting secondary link information related to the secondary link HARQ process.

[0176] Depending on the implementation method, the base station may not differentiate between additional retransmission resources allocated by the Mode 1DG DCI based on resource cycles. For example, the base station may allow the UE to use the additional retransmission resources allocated by the Mode 1DG DCI for all initial transmissions and / or retransmissions related to the target Mode 1CG. For example, the base station may signal / send index information related to the CG associated with the retransmission resources to the UE only via the Mode 1DG DCI.

[0177] Alternatively, for example, the base station does not differentiate the additional retransmission resources allocated by the Mode 1DG DCI according to the index and resource period associated with the CG, and the base station may allow the UE to use the additional retransmission resources allocated by the Mode 1DG DCI for all initial transmissions and / or retransmissions associated with the target Mode 1CG.

[0178] Based on the implementation method, if the base station allocates only periodic resources to the UE via Mode 1CG DCI, and if the transmitting UE transmits secondary link information based on the allocated resources, the transmitting UE can determine or select the secondary link HARQ process ID value indicated by the SCI associated with the secondary link information.

[0179] For example, if the transmitting UE requests retransmission resources from the base station via PUCCH, the transmitting UE can also signal / send secondary link HARQ process ID information related to the retransmission resources to the base station. For example, if the transmitting UE reports secondary link HARQ feedback information received from the receiving UE to the base station via PUCCH, the transmitting UE can also signal / send secondary link HARQ process ID information related to the HARQ feedback information. For example, the base station can specify or set the secondary link HARQ process ID value indicated by the Mode 1DG DCI used for allocating additional retransmission resources to the secondary link HARQ process ID information reported by the UE.

[0180] For example, if the UE does not complete the first TB transmission based on a specific secondary link HARQ process ID, and if the UE needs to perform a second TB transmission using mode 1CG resources with the same secondary link HARQ process ID, the UE can omit / skip TB transmissions associated with services that have relatively low priority, relatively high latency requirements, or relatively low reliability requirements. For example, if the UE does not complete the first TB transmission based on a specific secondary link HARQ process ID, and if the UE needs to perform a second TB transmission using mode 1CG resources with the same secondary link HARQ process ID, the UE can omit / skip TB transmissions associated with services that have relatively high priority, relatively low latency requirements, or relatively high reliability requirements. For example, if the UE does not complete the first TB transmission based on a specific secondary link HARQ process ID, and if the UE needs to perform a second TB transmission using mode 1CG resources with the same secondary link HARQ process ID, the UE can omit / skip both the first and second TB transmissions, or it can omit / skip randomly selected TBs.

[0181] For example, if the UE does not complete the first TB transmission based on a specific secondary link HARQ process ID, and if the UE needs to perform a second TB transmission using mode 1CG resources with the same secondary link HARQ process ID, the UE can only transmit TBs related to services with relatively low priority, relatively high latency requirements, or relatively low reliability requirements. For example, if the UE does not complete the first TB transmission based on a specific secondary link HARQ process ID, and if the UE needs to perform a second TB transmission using mode 1CG resources with the same secondary link HARQ process ID, the UE can only transmit TBs related to services with relatively high priority, relatively low latency requirements, or relatively high reliability requirements. For example, if the UE does not complete the first TB transmission based on a specific secondary link HARQ process ID, and if the UE needs to perform a second TB transmission using mode 1CG resources with the same secondary link HARQ process ID, the UE can either perform the first TB transmission or the second TB transmission, or it can only transmit randomly selected TBs.

[0182] Based on embodiments of this disclosure, the transmitting UE can refresh the buffer for the TB (Transmission Block) associated with the HARQ process ID before the next CG (Copy Script) resource associated with the HARQ process ID. For example, the operation of the transmitting UE omitting / skipping the first TB may include the operation of the transmitting UE refreshing the buffer of the secondary link process associated with the first TB. For example, before transmitting the second TB associated with the HARQ process ID, the transmitting UE can refresh the HARQ buffer for the first TB associated with the HARQ process ID.

[0183] Based on the embodiments of this disclosure, if the transmitting UE performs a TB transmission or a new TB transmission by using Mode 1 CG resources in different or adjacent periods, it may be unclear which value the transmitting UE specifies in the sublink HARQ process ID information, CG index information, or NDI information indicated by the SCI. This is because Mode 1 CG resources in different or adjacent periods can have different sublink HARQ process IDs. For example, the sublink HARQ process ID can be determined based on a pre-configured formula.

[0184] For example, in the case of mode 2 operation, the UE can determine or select the sublink HARQ process ID information indicated by the SCI associated with the mode 2 CG resources in a specific period.

[0185] For example, the transmitting UE may specify or set the CG index value and / or secondary link HARQ process ID value indicated by the SCI to the CG index information and / or secondary link HARQ process ID information related to the Mode 1 CG resource where the first or initial transmission related to TB begins. For example, the transmitting UE may specify or set the CG index value and / or secondary link HARQ process ID value indicated by the SCI to the CG index information and / or secondary link HARQ process ID information related to the Mode 1 CG resource where the last transmission or last retransmission related to TB will be performed.

[0186] For example, a base station can specify or set the sublink HARQ process ID value indicated by the Mode 1DG DCI used for allocating additional retransmission resources to the sublink HARQ process ID information associated with the PUCCH resource. For example, a base station can specify or set the sublink HARQ process ID value indicated by the Mode 1DG DCI used for allocating additional retransmission resources to the sublink HARQ process ID information associated with the Mode 1CG resource at the most recent or furthest time from the PUCCH resource among the Mode 1CG resources associated with the PUCCH resource. For example, a base station can specify or set the sublink HARQ process ID value indicated by the Mode 1DG DCI used for allocating additional retransmission resources to the HARQ process ID information associated with the Mode 1CG resource, including the first or last PSSCH time slot linked to the PSFCH time slot linked to the PUCCH resource (e.g., semi-static sublink HARQ codebook operation). In this document, for example, PUCCH resources may include at least one of PUCCH resources for reporting related to secondary link HARQ feedback information and / or PUCCH resources for sending messages requesting additional allocation of secondary link retransmission resources.

[0187] For example, the transmitting UE can successfully transmit the first TB using only some of the Mode 1CG resources in a specific period, and can transmit the second TB in the buffer by using the remaining resources in the Mode 1CG resources. In this case, the transmitting UE can set the secondary link HARQ process ID value indicated by the SCI to the secondary link process ID information associated with the Mode CG resources in the specific period, and can switch the NDI value. That is, the secondary link HARQ process ID value indicated by the SCI associated with the transmission of the first TB can also be set to the same secondary link process ID information.

[0188] Figure 14 An example is shown of a transmitting UE performing TB transmission or new TB transmission by using mode 1CG resources in different or adjacent cycles based on an embodiment of this disclosure. Figure 14 The implementation methods can be combined with various implementation methods of this disclosure.

[0189] Reference Figure 14 For example, a transmitting UE can perform a new TB transmission by using Mode 1CG resources in an adjacent period with HARQ process ID#X / HARQ process ID#Y. For example, the Mode 1CG DCI can schedule resources in period P (i.e., allocate two resources for each period). For example, the transmitting UE can set the sublink HARQ process ID value indicated by the SCI to the sublink HARQ process ID#X associated with the Mode 1CG resources in which the first or initial transmission related to the TB is performed. The base station can set the sublink HARQ process ID value indicated by the Mode 1DG DCI used to allocate additional retransmission resources to the sublink HARQ process ID#Y associated with the Mode 1CG resources and the PUCCH resources used to report sublink HARQ feedback information.

[0190] Based on the implementation method, the transmitting UE can send a secondary link scheduling request (SR) / buffer state request (BSR) to the base station, and the base station can schedule initial transmission resources or retransmission resources for the transmitting UE through mode 1DG DCI#X. The transmitting UE can report secondary link HARQ feedback to the base station based on the PUCCH resources configured / associated with initial transmission resources or retransmission resources, and the base station can allocate additional retransmission resources necessary for the transmitting UE through mode 1DG DCI#Y. In this case, for example, the base station can set the secondary link HARQ process ID value indicated by mode 1DG DCI#Y to the secondary link HARQ process ID information indicated by mode 1DG DCI#X.

[0191] Alternatively, for example, the base station may set the secondary link HARQ process ID value indicated by mode 1DG DCI#Y to the secondary link HARQ process ID information related to the PUCCH resources used for secondary link SR transmission and / or secondary link BSR transmission. Additionally, the base station may set the secondary link HARQ process ID value indicated by mode 1DG DCI#X to the secondary link HARQ process ID information related to the PUCCH resources used for secondary link SR transmission and / or secondary link BSR transmission.

[0192] In this document, for example, the transmitting UE may set the secondary link HARQ process ID value indicated by the SCI to the secondary link HARQ process ID information related to the mode 1DG resources transmitted in relation to the secondary link HARQ process of the transmitting UE (e.g., the secondary link HARQ process ID value signaled by the DCI used to allocate mode 1DG resources).

[0193] For example, if an operation related to Mode 1CG is performed, the base station can allocate / schedule additional retransmission resources to the transmitting UE via Mode 1DG DCI. For example, the base station can allocate / schedule additional retransmission resources to the transmitting UE via Mode 1DG DCI based on SL HARQ feedback information received from the transmitting UE via (pre-configured) PUCCH. In this case, for the link between the Mode 1CG resources and the retransmission resources additionally allocated / scheduled via Mode 1DG DCI, the base station can define / configure information / fields (e.g., ID and / or CG index and / or NDI) for the link in the Mode 1CG DCI and Mode 1DG DCI related to the allocation / scheduling of additional retransmission resources. For example, the ID could be the sublink HARQ process ID. For example, the base station can send information related to the link between the Mode 1CG resources and the retransmission resources additionally allocated / scheduled via Mode 1DG DCI to the transmitting UE via Mode 1CG DCI. For example, the base station can send information related to the link between the Mode 1CG resources and the retransmission resources additionally allocated / scheduled via Mode 1DG DCI to the transmitting UE via Mode 1DG DCI.

[0194] In this document, for example, if the field is implemented in the form of an ID or a secondary link HARQ process ID, the base station can set the ID or secondary link HARQ process ID value to a pre-configured specific value among multiple secondary link HARQ process IDs that can be used for operations related to mode 1DG. In this document, for example, the base station can set / limit the maximum number of secondary link HARQ process IDs related to mode 1DG that can be used as field values. For example, the base station can set / limit the minimum number of secondary link HARQ process IDs related to mode 1DG that can be used as field values.

[0195] In this document, for example, if a base station simultaneously configures / transmits both Mode 1 Type 1 CG and Mode 1 Type 2 CG to a transmitting UE, the base station can independently or differently set the ID value or sublink HARQ process ID assigned to each CG. In this document, for example, if a field for linking is defined and implemented in the form of an ID or sublink HARQ process ID, the base station can configure / assign the ID or sublink HARQ process ID value differently for each Mode 1 CG. For example, the base station can configure / assign the ID or sublink HARQ process ID value differently for each of multiple Mode 1 CGs, and the base station can configure / transmit multiple Mode 1 CGs to a transmitting UE.

[0196] For example, if an operation related to Mode 1CG is performed, the base station can allocate / schedule additional retransmission resources via Mode 1DG DCI. For instance, the base station can allocate / schedule additional retransmission resources to the transmitting UE via Mode 1DG DCI based on SLHARQ feedback information received from the transmitting UE via (pre-configured) PUCCH. In this case, the maximum (allowed) number of retransmissions pre-configured for the transmitting UE for the operation related to Mode 1CG can include the number of (re)transmissions performed by the transmitting UE via the additional retransmission resources allocated / scheduled via Mode 1DG DCI. For example, the maximum (allowed) number of retransmissions pre-configured for the transmitting UE for the operation related to Mode 1CG can include the number of (re)transmissions performed by the transmitting UE via the additional retransmission resources allocated / scheduled via Mode 1DG DCI and the number of (re)transmissions performed by the transmitting UE via Mode 1CG resources. For example, the maximum (allowed) number of retransmissions pre-configured for the transmitting UE for operations related to Mode 1CG may not include the number of (re)transmissions performed by the transmitting UE via retransmission resources additionally allocated / scheduled through Mode 1DGDCI.

[0197] For example, if the transmitting UE performs an initial transmission related to TB using mode 1CG resources, and if the transmitting UE performs a (re)transmission related to TB using retransmission resources additionally allocated / scheduled via mode 1DG DCI (as associated with mode 1CG resources), then the maximum (allowed) number of retransmissions pre-configured for the transmitting UE for operations related to mode 1CG may include the number of (re)transmissions performed by the transmitting UE via retransmission resources additionally allocated / scheduled via mode 1DG DCI.

[0198] For example, if the transmitting UE performs an initial transmission related to TB using mode 1DG resources, and if the transmitting UE performs a (re)transmission related to TB using mode 1CG resources, the maximum (allowed) number of retransmissions pre-configured for the transmitting UE for operations related to mode 1CG may not include the number of transmissions performed by the transmitting UE via mode 1DG DCI.

[0199] Figure 15 The process of a transmitting UE transmitting a second transport block based on a first transport block transmission failure and a HARQ process ID, according to an embodiment of the present disclosure, is illustrated. Figure 15 The implementation methods can be combined with various implementation methods of this disclosure.

[0200] Reference Figure 15In step S1510, the base station can send a configuration grant (hereinafter, CG) to the transmitting UE. For example, the transmitting UE can send a request for secondary link resource allocation to the base station via PUCCH, and the base station can send a CG to the transmitting UE based on the request for secondary link resource allocation message. For example, the CG can be CG type 1 or CG type 2.

[0201] In step S1520, the transmitting UE can send the first transport block to the receiving UE based on the CG. For example, the transmitting UE can send the first transport block to the receiving UE using the first secondary link resources allocated by the CG and associated with the first HARQ process ID.

[0202] In step S1530, the transmitting UE can send the second transport block to the receiving UE based on the CG. For example, the transmitting UE can send the second transport block to the receiving UE via the second secondary link resources allocated by the CG and associated with the second HARQ process ID. For example, based on the failure of the transmission of the first transport block and the fact that the second HARQ process ID associated with the second secondary link resources is the same as the first HARQ process ID, the transmitting UE can send the second transport block to the receiving UE via the second secondary link resources allocated by the CG and associated with the second HARQ process ID. For example, the transmitting UE can determine the failure of the transmission of the first transport block based on receiving a NACK corresponding to the first transport block from the receiving UE. For example, the second transport block can be a transport block sent to another receiving UE besides the UE that received the first transport block. Based on various embodiments of this disclosure, the transmission target of the second transport block is not limited to the receiving UE that received the first transport block, and... Figure 15 In this implementation, it is assumed that the target of the second transmission block is the receiving UE that has already received the first transmission block.

[0203] For example, if the transmission of the first transport block fails and the second HARQ process ID associated with the second secondary link resource is the same as the first HARQ process ID, the transmitting UE can omit / skip the transmission of the first transport block. For example, the transmitting UE can refresh the buffer of the first transport block from the secondary link process associated with the first HARQ process ID.

[0204] For example, the priority of a service associated with the first transport block may be lower than the priority of a service associated with the second transport block. For example, the latency requirement for a service associated with the first transport block may be higher than the latency requirement for a service associated with the second transport block. For example, the reliability of a service associated with the first transport block may be lower than the reliability of a service associated with the second transport block.

[0205] Additionally, for example, if the secondary link resources allocated to the second transport block are the remaining resources among the secondary link resources allocated by the CG, excluding the first secondary link resources, then the HARQ process ID associated with the SCI can be determined as the second HARQ process ID.

[0206] Figure 16 An example is shown where the transmission of a first transport block fails and a second transport block is transmitted, based on an embodiment of this disclosure. Figure 16 The implementation methods can be combined with various implementation methods of this disclosure.

[0207] Reference Figure 16 The transmitting UE can transmit the first TB within the period associated with the CG resources allocated from the base station. In this case, if the transmitting UE fails to transmit the first TB and needs to transmit the second TB, the transmitting UE can determine whether the HARQ process ID associated with the first TB and the HARQ process ID associated with the second TB are the same. For example, if the HARQ process ID associated with the first TB is PID#X and the HARQ process ID associated with the second TB is the same as PID#X, the transmitting UE can omit / skip the transmission of the previously transmitted first TB. Furthermore, for example, if the HARQ process ID associated with the first TB is PID#X and the HARQ process ID associated with the second TB is the same as PID#X, the transmitting UE can transmit the new second TB using only the CG resources.

[0208] Figure 17 The process of a transmitting UE retransmitting a second transport block based on dynamic authorization, according to an embodiment of this disclosure, is illustrated. Figure 17 The implementation methods can be combined with various implementation methods of this disclosure.

[0209] Reference Figure 17 In step S1710, the base station can send a configuration grant (hereinafter, CG) to the transmitting UE. For example, the transmitting UE can send a request for secondary link resource allocation to the base station via PUCCH, and the base station can send a CG to the transmitting UE based on the request for secondary link resource allocation message. For example, the CG can be CG type 1 or CG type 2.

[0210] In step S1720, the transmitting UE can send the first transport block to the receiving UE based on the CG. For example, the transmitting UE can send the first transport block to the receiving UE through the first secondary link resources allocated by the CG and associated with the first HARQ process ID.

[0211] In step S1730, the transmitting UE can send the second transport block to the receiving UE based on the CG. For example, the transmitting UE can send the second transport block to the receiving UE via the second secondary link resources allocated by the CG and associated with the second HARQ process ID. For example, based on the failure of the transmission of the first transport block and the fact that the second HARQ process ID associated with the second secondary link resources is the same as the first HARQ process ID, the transmitting UE can send the second transport block to the receiving UE via the second secondary link resources allocated by the CG and associated with the second HARQ process ID. For example, the transmitting UE can send the SCI to the receiving UE via the second secondary link resources. For example, the HARQ process ID associated with the SCI can be determined as the second HARQ process ID associated with the second transport block. For example, the transmitting UE can determine the failure of the transmission of the first transport block based on receiving a NACK corresponding to the first transport block from the receiving UE. For example, the second transport block can be a transport block sent to another receiving UE besides the UE that received the first transport block. Based on various embodiments of this disclosure, the transmission target of the second transport block is not limited to the receiving UE that received the first transport block, and... Figure 17 In this implementation, it is assumed that the target of the second transmission block is the receiving UE that has already received the first transmission block.

[0212] In step S1740, the transmitting UE can receive HARQ feedback information corresponding to the second transport block from the receiving UE via the PSFCH. For example, the HARQ feedback information may include ACK or NACK. For example, the transmitting UE can receive NACK corresponding to the second transport block from the receiving UE via the PSFCH.

[0213] In step S1750, the transmitting UE can send HARQ feedback information to the base station via PUCCH. For example, the transmitting UE can request dynamic grant (hereinafter, DG) from the base station to be allocated resources for retransmitting the second transport block. For example, the transmitting UE can report HARQ feedback information related to the transmission of the second transport block to the base station via PUCCH based on the failure of the second transport block transmission. For example, the transmitting UE can report HARQ feedback information and the second HARQ process ID related to the second transport block to the base station via PUCCH. For example, the transmitting UE can report NACK related information and the second HARQ process ID corresponding to the second transport block to the base station via PUCCH.

[0214] In step S1760, the base station may send the DG to the transmitting UE. For example, the base station may send the DG to the transmitting UE via the PDCCH based on HARQ feedback reported by the transmitting UE. For example, the DG may include at least one of the following: index information of the CG associated with the DG or HARQ process ID (e.g., second HARQ process ID) associated with the second secondary link resource. For example, the second HARQ process ID may be determined by a pre-configured formula. For example, the second HARQ process ID may be determined by Equation 1 above.

[0215] In step S1770, the transmitting UE can resend the second transport block to the receiving UE based on the DG. For example, the transmitting UE can resend the second transport block to the receiving UE using the index information of the CG associated with the DG, through the third secondary link resources allocated by the DG. For example, the HARQ process ID associated with the third secondary link resources can be determined as the second HARQ process ID associated with the second transport block.

[0216] Additionally, for example, the transmitting UE can receive HARQ feedback information for a second transport block transmitted via the third sublink resource via the PSFCH. For example, the transmitting UE can report HARQ feedback information for a second transport block transmitted via the third sublink resource to the base station via the PUCCH. For example, the transmitting UE can receive another DG from the base station via the PDCCH. For example, the HARQ process ID associated with the fourth sublink resource allocated by another DG can be determined as the HARQ process ID associated with the third sublink resource. For example, the HARQ process ID associated with an SCI transmitted via the fourth sublink resource can be determined as the HARQ process ID associated with the fourth sublink resource.

[0217] Figure 18 An example is shown of a transmitting UE determining CG resources related to DG based on CG index information according to an embodiment of this disclosure. Figure 18 The implementation methods can be combined with various implementation methods of this disclosure.

[0218] Reference Figure 18The base station can allocate multiple CG resources in different periods to the transmitting UE. For example, the base station can allocate a first CG resource and a second CG resource to the transmitting UE. The transmitting UE can send secondary link data to the receiving UE via the first CG resource in the period associated with the first CG resource. In this case, for example, if the transmitting UE cannot send secondary link data to the receiving UE via the first CG resource, the transmitting UE can request additional resources from the base station via the PUCCH resource associated with the first CG resource to send additional secondary link data. For example, the transmitting UE can send information related to the NACK received from the receiving UE via the PUCCH resource based on the NACK received from the receiving UE. The base station can send a DG to the transmitting UE based on the information related to the NACK or the additional resource request. In this document, the DG may include CG index information for distinguishing between the first CG resource and the second resource. The transmitting UE can determine the DG resource associated with the first CG resource based on the CG index information included in the DG. The transmitting UE can resend the secondary link data to the receiving UE via the DG resource associated with the first CG resource.

[0219] Figure 19 A method for transmitting a second transport block based on a first apparatus according to an embodiment of the present disclosure is shown. Figure 19 The implementation methods can be combined with various implementation methods of this disclosure.

[0220] Reference Figure 19 In step S1910, the first device 100 can receive configuration authorization from the base station.

[0221] In step S1920, the first device 100 can send the first transport block through the first secondary link resources associated with the first Hybrid Automatic Repeat Request (HARQ) process ID, which are allocated by the configuration authorization.

[0222] In step S1930, if the transmission of the first transport block fails and the second HARQ process ID associated with the second secondary link resource is the same as the first HARQ process ID, the first device 100 can transmit the second transport block through the second secondary link resource allocated by the configuration authorization associated with the second HARQ process ID. For example, if the transmission of the first transport block fails and the second HARQ process ID is the same as the first HARQ process ID, the transmission of the first transport block can be skipped. For example, the first device can refresh the first transport block in the buffer of the secondary link process associated with the first HARQ process ID. For example, the priority of the service associated with the first transport block can be lower than the priority of the service associated with the second transport block. For example, the waiting time requirement of the service associated with the first transport block can be higher than the waiting time requirement of the service associated with the second transport block. For example, the reliability of the service associated with the first transport block can be lower than the reliability of the service associated with the second transport block.

[0223] For example, the first device 100 can transmit secondary link control information (SCI) via second secondary link resources. For example, the first device 100 can report HARQ feedback information related to the transmission of the second transport block to the base station via the Physical Uplink Control Channel (PUCCH) based on the failure of the second transport block transmission. For example, the first device 100 can receive a first dynamic grant from the base station via the Physical Downlink Control Channel (PDCCH). For example, a third secondary link resource for retransmission of the second transport block can be allocated to the first device 100 based on the first dynamic grant. For example, the HARQ process ID associated with the SCI can be determined as the second HARQ process ID associated with the second transport block. For example, the second HARQ process ID associated with the second transport block can be reported to the base station along with the HARQ feedback information. For example, the HARQ process ID associated with the third secondary link resource can be determined as the second HARQ process ID associated with the second transport block. For example, since the second HARQ process ID associated with the second transport block is different from the first HARQ process ID, the HARQ process ID associated with the SCI can be determined as the second HARQ process ID. In this case, for example, the secondary link resources allocated to the second transport block can be the remaining resources among the secondary link resources allocated by the configuration authorization, excluding the first secondary link resources.

[0224] For example, the first device 100 can receive HARQ feedback information for a second transport block transmitted via the third sublink resource via the PSFCH. For example, the first device 100 can report the HARQ feedback information for the second transport block transmitted via the third sublink resource to the base station via the PUCCH. For example, the first device 100 can receive a second dynamic grant from the base station via the PDCCH. For example, the HARQ process ID associated with the fourth sublink resource allocated by the second dynamic grant can be determined as the HARQ process ID associated with the third sublink resource. For example, the HARQ process ID associated with the SCI transmitted via the fourth sublink resource can be determined as the HARQ process ID associated with the fourth sublink resource.

[0225] The proposed method can be applied to the apparatus described in this disclosure. First, the processor 102 of the first apparatus 100 can control the transceiver 106 to receive a configuration grant from the base station. Additionally, the processor 102 of the first apparatus 100 can control the transceiver 106 to transmit a first transport block via a first secondary link resource allocated by the configuration grant, associated with a first Hybrid Automatic Repeat Request (HARQ) process ID. Furthermore, the processor 102 of the first apparatus 100 can control the transceiver 106 to transmit a second transport block based on a failure to transmit the first transport block and a second HARQ process ID associated with a second secondary link resource being the same as the first HARQ process ID, via a second secondary link resource allocated by the configuration grant, associated with a second HARQ process ID.

[0226] Based on embodiments of this disclosure, a first apparatus configured to perform 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 instructions to: receive a configuration grant from a base station; transmit a first transport block via a first secondary link resource allocated by the configuration grant, associated with a first Hybrid Automatic Repeat Request (HARQ) process ID; and, based on the failure to transmit the first transport block and a second HARQ process ID associated with a second secondary link resource being the same as the first HARQ process ID, transmit a second transport block via a second secondary link resource allocated by the configuration grant, associated with the second HARQ process ID. For example, based on the failure to transmit the first transport block and a second HARQ process ID being the same as the first HARQ process ID, the transmission of the first transport block may be skipped.

[0227] Based on embodiments of this disclosure, a device configured to control a first user equipment (UE) can be provided. For example, the device may include: one or more processors; and one or more memories operatively connected to the one or more processors and storing instructions. For example, the one or more processors may execute instructions to: receive a configuration grant from a base station; transmit a first transport block via a first secondary link resource allocated by the configuration grant, associated with a first Hybrid Automatic Repeat Request (HARQ) process ID; and, based on a failure to transmit the first transport block and a second HARQ process ID associated with a second secondary link resource being the same as the first HARQ process ID, transmit a second transport block via a second secondary link resource allocated by the configuration grant, associated with the second HARQ process ID. For example, based on a failure to transmit the first transport block and a second HARQ process ID being the same as the first HARQ process ID, the transmission of the first transport block may be skipped.

[0228] Based on embodiments of this disclosure, a non-transitory computer-readable storage medium storing instructions can be provided. For example, when executed, the instructions can cause a first device to: receive a configuration grant from a base station; transmit a first transport block via a first secondary link resource allocated by the configuration grant, associated with a first Hybrid Automatic Repeat Request (HARQ) process ID; and, based on the failure to transmit the first transport block and the fact that a second HARQ process ID associated with a second secondary link resource is the same as the first HARQ process ID, transmit a second transport block via a second secondary link resource allocated by the configuration grant, associated with the second HARQ process ID. For example, if the transmission of the first transport block fails and the second HARQ process ID is the same as the first HARQ process ID, the transmission of the first transport block can be skipped.

[0229] Figure 20 A method is shown for a second device, based on an embodiment of the present disclosure, to receive sublink information from a first device using index information of a CG via resources allocated by a DG. Figure 20 The implementation methods can be combined with various implementation methods of this disclosure.

[0230] Reference Figure 20 In step S2010, the second device 200 can receive the first transport block from the first device 100 through the first secondary link resources allocated by the configuration authorization associated with the first Hybrid Automatic Repeat Request (HARQ) process ID.

[0231] In step S2020, the second device 200 may receive the second transport block from the first device 100 through the second secondary link resource associated with the second HARQ process ID, which is allocated by the configuration authorization, based on the failure to transmit the first transport block and the fact that the second HARQ process ID associated with the second secondary link resource is the same as the first HARQ process ID. For example, the transmission of the first transport block may be skipped if the transmission of the first transport block fails and the second HARQ process ID is the same as the first HARQ process ID. For example, the first device 100 may refresh the first transport block in the buffer of the secondary link process associated with the first HARQ process ID. For example, the priority of the service associated with the first transport block may be lower than the priority of the service associated with the second transport block. For example, the waiting time requirement of the service associated with the first transport block may be higher than the waiting time requirement of the service associated with the second transport block. For example, the reliability of the service associated with the first transport block may be lower than the reliability of the service associated with the second transport block.

[0232] For example, the second device 200 can receive secondary link control information (SCI) from the first device 100 via second secondary link resources. For example, based on a transmission failure of the second transport block, HARQ feedback information related to the transmission of the second transport block can be reported to the base station via the Physical Uplink Control Channel (PUCCH). For example, a first dynamic grant can be received from the base station to the first device 100 via the Physical Downlink Control Channel (PDCCH). For example, a third secondary link resource for retransmission of the second transport block can be allocated to the first device 100 based on the first dynamic grant. For example, the HARQ process ID associated with the SCI can be determined as the second HARQ process ID associated with the second transport block. For example, the second HARQ process ID associated with the second transport block can be reported to the base station along with the HARQ feedback information. For example, the HARQ process ID associated with the third secondary link resource can be determined as the second HARQ process ID associated with the second transport block. For example, since the second HARQ process ID associated with the second transport block is different from the first HARQ process ID, the HARQ process ID associated with the SCI can be determined as the second HARQ process ID. In this case, for example, the secondary link resources allocated to the second transport block can be the remaining resources among the secondary link resources allocated by the configuration authorization, excluding the first secondary link resources.

[0233] For example, the first device 100 can receive HARQ feedback information for a second transport block transmitted via the third sublink resource via the PSFCH. For example, the HARQ feedback information for the second transport block transmitted via the third sublink resource can be reported to the base station via the PUCCH. For example, the second dynamic grant can be received from the base station to the first device 100 via the PDCCH. For example, the HARQ process ID associated with the fourth sublink resource allocated by the second dynamic grant can be determined as the HARQ process ID associated with the third sublink resource. For example, the HARQ process ID associated with an SCI transmitted via the fourth sublink resource can be determined as the HARQ process ID associated with the fourth sublink resource.

[0234] The proposed method can be applied to the apparatus described in this disclosure. First, the processor 202 of the second apparatus 200 can control the transceiver 206 to receive a first transport block from the first apparatus 100 via a first secondary link resource allocated by configuration authorization, associated with a first Hybrid Automatic Repeat Request (HARQ) process ID. Additionally, the processor 202 of the second apparatus 200 can control the transceiver 206 to receive a second transport block from the first apparatus 100 via a second secondary link resource allocated by configuration authorization, based on the failure to transmit the first transport block and the second HARQ process ID associated with the second secondary link resource being the same as the first HARQ process ID.

[0235] Based on embodiments of this disclosure, a second apparatus configured to perform wireless communication can be provided. 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 instructions to: receive a first transport block from a first apparatus via a first secondary link resource allocated by configuration authorization, associated with a first Hybrid Automatic Repeat Request (HARQ) process ID; and, based on a failure to transmit the first transport block and a second HARQ process ID associated with the second secondary link resource being the same as the first HARQ process ID, receive a second transport block from the first apparatus via a second secondary link resource allocated by configuration authorization, associated with the second HARQ process ID. For example, based on a failure to transmit the first transport block and a second HARQ process ID being the same as the first HARQ process ID, the transmission of the first transport block may be skipped.

[0236] The following will describe devices to which various embodiments of the present disclosure may be applied.

[0237] The various descriptions, functions, processes, proposals, methods, and / or operational 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).

[0238] 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.

[0239] Figure 21 A communication system (1) according to an embodiment of the present disclosure is shown.

[0240] Reference Figure 21 The 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.

[0241] 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), etc. 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. Additionally or alternatively, the wireless communication technologies 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, taking into account low power communication, and are not limited to the aforementioned names. 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.

[0242] Wireless devices 100a to 100f can connect to network 300 via BS200. 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 BS200 / 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.

[0243] Wireless communication / connections 150a, 150b, or 150c can be established between wireless devices 100a to 100f / BS200 or BS200 / BS200. 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.

[0244] Figure 22 A wireless device according to an embodiment of the present disclosure is shown.

[0245] Reference Figure 22 The first device / first wireless device (100) and the second device / second wireless device (200) can transmit radio signals via various RATs (e.g., LTE and NR). In this document, {first wireless device (100) and second wireless device (200)} can correspond to... Figure 21 {Wireless device (100x) and BS (200)} and / or {Wireless device (100x) and Wireless device (100x)}.

[0246] 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 (antenna elements) 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 related 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.

[0247] 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.

[0248] 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.

[0249] 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.

[0250] 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.

[0251] 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.

[0252] Figure 23 A signal processing circuit for transmitting signals according to an embodiment of the present disclosure is shown.

[0253] Reference Figure 23 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 23 Operations / functions, but not limited to Figure 22 The processors (102, 202) and / or transceivers (106, 206) can be used. Figure 22Implemented by processors (102, 202) and / or transceivers (106, 206) Figure 23 Hardware components. For example, it can be achieved through... Figure 22 The processors (102, 202) implement boxes 1010 to 1060. Alternatively, they can be implemented using... Figure 22 The processors (102, 202) implement boxes 1010 to 1050, and can be used to... Figure 22 The transceivers (106, 206) are used to implement the frame 1060.

[0254] Can be via Figure 23 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).

[0255] 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.

[0256] 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.

[0257] Can be with Figure 23 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 22 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.

[0258] Figure 24 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 21 ).

[0259] Reference Figure 24 The wireless devices (100, 200) can correspond to Figure 22 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 storage unit / memory (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 22 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 22The 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), the storage unit (130), and the add-on 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 storage unit (130). The control unit (120) may transmit information stored in the storage unit (130) to an external location (e.g., another communication device) via the communication unit (110) through a wireless / wired interface, or store information received from an external location (e.g., another communication device) via the communication unit (110) through a wireless / wired interface in the storage unit (130).

[0260] The add-on component (140) can be configured in various ways depending on the type of wireless device. For example, the add-on 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 21 100a), vehicles ( Figure 21 100b-1 and 100b-2), XR device ( Figure 21 100c), handheld device ( Figure 21 100d), home appliances ( Figure 21 100e), IoT devices ( Figure 21 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 21 400), BS ( Figure 21 (e.g., 200), network nodes, etc. Depending on the use case / service, wireless devices can be used in mobile or fixed locations.

[0261] exist Figure 24In the wireless devices (100, 200), all various elements, components, units / parts, 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 element, component, unit / part, and / or module within the wireless devices (100, 200) may also include one or more elements. 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, a memory cell (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.

[0262] The implementation will be described in detail below with reference to the accompanying drawings. Figure 24 Examples.

[0263] Figure 25 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).

[0264] Reference Figure 25 The handheld device (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a storage 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 24 The frame is 110 to 130 / 140.

[0265] 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). Storage unit 130 can store data / parameters / programs / codes / commands required to drive handheld device 100. Storage 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, battery, etc. Interface unit 140b can support connection of handheld device 100 to other external devices. Interface unit 140b may include various ports for connection 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.

[0266] 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 storage unit 130. Communication unit 110 can convert the information / signals stored in the 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 storage unit 130 and can be output in various types (e.g., text, voice, image, video, or haptic feedback) through I / O unit 140.

[0267] Figure 26 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.

[0268] Reference Figure 26 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 24 The frame size is 110 / 130 / 140.

[0269] 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.

[0270] 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.

[0271] 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 secondary link authorization configuration information related to the configured secondary link authorization from the base station; Based on the current symbol of the first resource within the first period, the period of the configured secondary link grant, and the number of Hybrid Automatic Repeat Request (HARQ) processes, and through a modulo function, obtain the first HARQ process identifier ID associated with the first period of the configured secondary link grant. The first transport block TB is sent based on at least one resource within the first period; Based on the current symbol of the second resource within the second period, the period, and the number of HARQ processes, and through the modulo function, obtain the second HARQ process ID associated with the second period of the configured secondary link authorization, wherein the second HARQ process ID is the same as the first HARQ process ID; Since the second HARQ process ID is the same as the first HARQ process ID, the buffer of the sub-link process associated with the first HARQ process ID is refreshed; Send the second TB based on at least one resource within the second cycle; The negative acknowledgment report related to the transmission of the second TB is sent to the base station via the Physical Uplink Control Channel (PUCCH). The first dynamic grant is received from the base station via downlink control information (DCI). Wherein, the first dynamic authorization scheduling is used for the third resource of the retransmission of the second TB, and The DCI includes an index for identifying the secondary link authorization configuration information of the configured system and the second HARQ process ID; and The third resource will be used for the retransmission of the second TB based on the index and the second HARQ process ID.

2. The method according to claim 1, wherein, The priority of the service associated with the first TB is lower than the priority of the service associated with the second TB, or the waiting time requirement of the service associated with the first TB is higher than the waiting time requirement of the service associated with the second transport block.

3. The method according to claim 1, wherein, The reliability of the service associated with the first TB is lower than that of the service associated with the second TB.

4. The method according to claim 1, wherein, The second HARQ process ID associated with the second TB is reported to the base station along with the negative acknowledgment.

5. The method according to claim 4, wherein, The HARQ process ID associated with the third secondary link resource is determined to be the second HARQ process ID associated with the second TB.

6. A first means configured to perform 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 secondary link authorization configuration information related to the configured secondary link authorization from the base station; Based on the current symbol of the first resource within the first period, the period of the configured secondary link grant, and the number of Hybrid Automatic Repeat Request (HARQ) processes, and through a modulo function, obtain the first HARQ process identifier ID associated with the first period of the configured secondary link grant. The first transport block TB is sent based on at least one resource within the first period; Based on the current symbol of the second resource within the second period, the period, and the number of HARQ processes, and through the modulo function, obtain the second HARQ process ID associated with the second period of the configured secondary link authorization, wherein the second HARQ process ID is the same as the first HARQ process ID; Since the second HARQ process ID is the same as the first HARQ process ID, the buffer of the sub-link process associated with the first HARQ process ID is refreshed; Send the second TB based on at least one resource within the second cycle; The negative acknowledgment report related to the transmission of the second TB is sent to the base station via the Physical Uplink Control Channel (PUCCH). The first dynamic grant is received from the base station via downlink control information (DCI). Wherein, the first dynamic authorization scheduling is used for the third resource of the retransmission of the second TB, and The DCI includes an index for identifying the secondary link authorization configuration information of the configuration and the second HARQ process ID; and The third resource will be used for the retransmission of the second TB based on the index and the second HARQ process ID.

7. An apparatus configured to control a first user equipment (UE), the apparatus comprising: One or more processors; as well as One or more memories, operatively connected to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to: Receive secondary link authorization configuration information related to the configured secondary link authorization from the base station; Based on the current symbol of the first resource within the first period, the period of the configured secondary link grant, and the number of Hybrid Automatic Repeat Request (HARQ) processes, and through a modulo function, obtain the first HARQ process identifier ID associated with the first period of the configured secondary link grant. The first transport block TB is sent based on at least one resource within the first period; Based on the current symbol of the second resource within the second period, the period, and the number of HARQ processes, and through the modulo function, obtain the second HARQ process ID associated with the second period of the configured secondary link authorization, wherein the second HARQ process ID is the same as the first HARQ process ID; Since the second HARQ process ID is the same as the first HARQ process ID, the buffer of the sub-link process associated with the first HARQ process ID is refreshed; Send the second TB based on at least one resource within the second cycle; The negative acknowledgment report related to the transmission of the second TB is sent to the base station via the Physical Uplink Control Channel (PUCCH). The first dynamic grant is received from the base station via downlink control information (DCI). Wherein, the first dynamic authorization scheduling is used for the third resource of the retransmission of the second TB, and The DCI includes an index for identifying the secondary link authorization configuration information of the configured system and the second HARQ process ID; and The third resource will be used for the retransmission of the second TB based on the index and the second HARQ process ID.

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