Wireless communication method and device

Abstract

The invention discloses a wireless communication method and equipment. The method may comprise the steps of: receiving, from a base station (200), system information comprising configuration information related to an anomalous pool; selecting a first anomalous pool or a second anomalous pool based on at least one of a physical layer problem, a connection reestablishment, a handover, or an unavailable normal resource pool; selecting a resource from the selected anomaly pool; and performing a sidelink (SL) communication using the resource.

Description

[0001] This application is a divisional application of the patent application with the original application number 202080060717.9 (International Application No.: PCT / KR2020 / 010302, filing date: August 5, 2020, invention title: Method and apparatus for resource selection in NR V2X). Technical Field

[0002] This disclosure relates to a wireless communication system. Background Art

[0003] Sidelink (SL) communication is a communication scheme in which a direct link is established between user equipment (UEs) and the UEs directly exchange voice and data with each other without the intervention of an evolved Node B (eNB). SL communication is being considered as a solution to eNB overhead caused by the rapid growth of data traffic.

[0004] V2X (Vehicle-to-Everything) refers to a communication technology in which a vehicle exchanges information with other vehicles, pedestrians, and objects equipped with infrastructure, etc. V2X can be classified into four types such as V2V (Vehicle-to-Vehicle), V2I (Vehicle-to-Infrastructure), V2N (Vehicle-to-Network), and V2P (Vehicle-to-Pedestrian). V2X communication can be provided through the PC5 interface and / or the Uu interface.

[0005] In addition, since more and more communication devices require a large communication capacity, enhanced mobile broadband communication is required compared to traditional radio access technology (RAT). Therefore, the design of a communication system for UEs or services that are sensitive to reliability and latency has also been discussed, and a next-generation radio access technology that takes into account enhanced mobile broadband communication, massive MTC, and ultra-reliable low-latency communication (URLLC) can be referred to as a new RAT (radio access technology) or NR (New Radio).

[0006] Figure 1 is a diagram for describing NR-based V2X communication compared to V2X communication based on the RAT used before NR. Figure 1 Embodiments of can be combined with various embodiments of the present disclosure.

[0007] Regarding V2X communication, when discussing the RAT used before NR, attention has been focused on a scheme for providing a security service based on V2X messages such as BSM (Basic Safety Message), CAM (Cooperative Awareness Message), and DENM (Decentralized Environment Notification Message). V2X messages can include location information, dynamic information, attribute information, etc. For example, a UE can send a periodic message type CAM and / or an event-triggered message type DENM to another UE.

[0008] For example, the CAM may include dynamic state information of the vehicle such as direction and speed, static data of the vehicle such as size, and basic vehicle information such as external lighting status, route details, etc. For example, the UE may broadcast the CAM, and the latency of the CAM may be less than 100 ms. For example, the UE may generate a DENM and send it to another UE in the event of an unexpected situation such as a vehicle failure, an accident, etc. For example, all vehicles within the transmission range of the UE can receive the CAM and / or the DENM. In this case, the priority of the DENM may be higher than that of the CAM.

[0009] Thereafter, regarding V2X communication, various V2X scenarios have been proposed in NR. For example, these various V2X scenarios may include vehicle platooning, advanced driving, extended sensors, remote driving, etc.

[0010] For example, based on vehicle platooning, vehicles can move together by dynamically forming a group. For example, in order to perform platooning operations based on vehicle platooning, the vehicles belonging to the group can receive periodic data from the leading vehicle. For example, the vehicles belonging to the group can reduce or increase the interval between vehicles by using the periodic data.

[0011] For example, based on advanced driving, the vehicle can be semi-automatic or fully automatic. For example, 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 its driving intention with nearby vehicles.

[0012] For example, based on extended sensors, raw data, processed data, or real-time video data obtained through local sensors can be exchanged between vehicles, logical entities, UEs of pedestrians, and / or V2X application servers. Therefore, for example, compared with the environment where detection is performed using self-sensors, the vehicle can identify an environment with further improvement.

[0013] For example, based on remote driving, for a remote vehicle in a dangerous environment or a person who cannot drive, a remote driver or a V2X application can operate or control the remote vehicle. For example, if the route is predictable like public transportation, cloud-based driving can be used for the operation or control of the remote vehicle. Additionally, for example, access to a cloud-based backend service platform can be considered for remote driving.

[0014] Furthermore, in NR-based V2X communication, solutions for specifying service requirements for various V2X scenarios such as vehicle queuing, advanced driving, extended sensors, remote driving, etc. have been discussed. Summary of the Invention

[0015] Solution to the Problem

[0016] According to an embodiment, a method for resource selection performed by a first device (100) in a wireless communication system is provided herein. The method may include the following steps: receiving system information including configuration information related to an abnormal pool from a base station (200); selecting the first abnormal pool or the second abnormal pool based on at least one of a physical layer problem, connection reconstruction, handover, or an unavailable normal resource pool; selecting a resource from the selected abnormal pool; and performing sidelink (SL) communication using the resource.

[0017] Beneficial effects

[0018] A user equipment (UE) can efficiently perform SL communication. Description of the drawings

[0019] Figure 1 is a diagram for describing NR-based V2X communication compared to V2X communication based on a RAT used before NR.

[0020] Figure 2 shows the structure of an NR system according to an embodiment of the present disclosure.

[0021] Figure 3 shows the functional division between an NG-RAN and a 5GC according to an embodiment of the present disclosure.

[0022] Figure 4 shows the radio protocol architecture according to an embodiment of the present disclosure.

[0023] Figure 5 shows the structure of an NR system according to an embodiment of the present disclosure.

[0024] Figure 6 shows the structure of a time slot of an NR frame according to an embodiment of the present disclosure.

[0025] Figure 7 shows an example of a BWP according to an embodiment of the present disclosure.

[0026] Figure 8 shows the radio protocol architecture of SL communication according to an embodiment of the present disclosure.

[0027] Figure 9 shows a UE performing V2X or SL communication according to an embodiment of the present disclosure.

[0028] Figure 10 shows a process in which a UE performs V2X or SL communication based on a transmission mode according to an embodiment of the present disclosure.

[0029] Figure 11 shows three cast types according to an embodiment of the present disclosure.

[0030] Figure 12 Illustrates the process of the TX UE performing SL communication.

[0031] Figure 13 Illustrates the process of the TX UE performing SL communication.

[0032] Figure 14 Illustrates the process of the UE selecting a transmission resource.

[0033] Figure 15 Illustrates the process of the first device performing resource selection.

[0034] Figure 16 Illustrates the process of the base station configuring an exception pool.

[0035] Figure 17 Illustrates communication system 1 according to an embodiment of the present disclosure.

[0036] Figure 18 Illustrates a wireless device according to an embodiment of the present disclosure.

[0037] Figure 19 Illustrates a signal processing circuit for transmitting a signal according to an embodiment of the present disclosure.

[0038] Figure 20 Illustrates another example of a wireless device according to an embodiment of the present disclosure.

[0039] Figure 21 Illustrates a handheld device according to an embodiment of the present disclosure.

[0040] Figure 22 Illustrates a vehicle or autonomous vehicle according to an embodiment of the present disclosure. Detailed embodiments

[0041] In this specification, "A or B" may mean "only A", "only B", or "both A and B". In other words, in this specification, "A or B" may be interpreted as "A and / or B". For example, in this specification, "A, B, or C" may mean "only A", "only B", "only C", or "any combination of A, B, and C".

[0042] The slash ( / ) or comma used in this specification may mean "and / or". For example, "A / B" may mean "A and / or B". Therefore, "A / B" may mean "only A", "only B", or "both A and B". For example, "A, B, C" may mean "A, B, or C".

[0043] In this specification, "at least one of A and B" may mean "only A", "only B", or "both A and B". Additionally, in this specification, 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".

[0044] Furthermore, in this specification, "at least one of A, B, and C" may mean "only A", "only B", "only C", or "any combination of A, B, and C". Additionally, "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".

[0045] Moreover, the parentheses used in this specification may mean "for example". Specifically, when it is indicated as "control information (PDCCH)", this may mean presenting "PDCCH" as an example of "control information". In other words, the "control information" in this specification is not limited to "PDCCH", and "PDDCH" may be presented as an example of "control information". Specifically, when it is indicated as "control information (i.e., PDCCH)", this may also mean presenting "PDCCH" as an example of "control information".

[0046] The technical features separately described in one of the drawings in this specification may be implemented separately or may be implemented simultaneously.

[0047] The techniques 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), Single-Carrier Frequency Division Multiple Access (SC-FDMA), etc. 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 Rates for GSM Evolution (EDGE). OFDMA can be implemented using radio technologies such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Evolved UTRA (E-UTRA), etc. IEEE 802.16m is an evolved version of IEEE 802.16e and provides backward compatibility for IEEE 802.16e-based systems. UTRA is part of the Universal Mobile Telecommunications System (UMTS). The Third 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. Long-Term Evolution-Advanced (LTE-A) is an evolution of LTE.

[0048] 5G New Radio (NR) is a follow-up technology to LTE-A corresponding to a new and innovative mobile communication system with characteristics such as high performance, low latency, high availability, etc. 5G NR can use resources of all available spectrums including low frequency bands below 1 GHz, intermediate frequency bands from 1 GHz to 10 GHz, and high frequencies (millimeter waves) above 24 GHz.

[0049] For clear description, the following description will mainly focus on LTE-A or 5G NR. However, the technical features according to the embodiments of the present disclosure are not limited thereto.

[0050] Figure 2 The structure of an NR system according to an embodiment of the present disclosure is shown. Figure 2 Embodiments of can be combined with various embodiments of the present disclosure.

[0051] Refer to Figure 2, the next-generation radio access network (NG-RAN) may include a BS20 that provides user-plane and control-plane protocol termination to the UE 10. For example, the BS20 may include a next-generation Node B (gNB) and / or an evolved Node B (eNB). For example, the UE10 may be fixed or mobile and may be referred to by other terms such as a mobile station (MS), a user terminal (UT), a subscriber station (SS), a mobile terminal (MT), a wireless device, etc. For example, the BS may be referred to as a fixed station that communicates with the UE 10 and may be referred to by other terms such as a base transceiver system (BTS), an access point (AP), etc.

[0052] Figure 2 An embodiment illustrates a case that only includes gNBs. The BS20s may be interconnected via the Xn interface. The BS20s may be interconnected via the fifth-generation (5G) core network (5GC) and the NG interface. More specifically, the BS20 may be connected to the access and mobility management function (AMF) 30 via the NG-C interface and may be connected to the user-plane function (UPF) 30 via the NG-U interface.

[0053] Figure 3 Illustrates the functional division between the NG-RAN and the 5GC based on an embodiment of the present disclosure. Figure 3 Embodiments may be combined with various embodiments of the present disclosure.

[0054] Referring to Figure 3 , the gNB may 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 regulation, dynamic resource allocation, etc. The AMF may provide functions such as non-access stratum (NAS) security, idle state mobility handling, etc. The UPF may provide functions such as mobility anchoring, protocol data unit (PDU) processing, etc. The session management function (SMF) may provide functions such as user equipment (UE) Internet protocol (IP) address allocation, PDU session control, etc.

[0055] The radio interface protocol layers between the UE and the network may be classified into a first layer (L1), a second layer (L2), and a third layer (L3) based on the lower three layers of the well-known Open Systems Interconnection (OSI) model in a communication system. Here, the physical (PHY) layer belonging to the first layer provides an information transmission service using a physical channel, and the radio resource control (RRC) layer located in the third layer controls the radio resources between the UE and the network. To this end, the RRC layer exchanges RRC messages between the UE and the BS layer.

[0056] Figure 4 Illustrates the radio protocol architecture based on an embodiment of the present disclosure.Figure 4 The embodiments of Figure 4 (a) shows a radio protocol architecture for the user plane, and Figure 4 (b) shows a radio protocol architecture for the control plane. The user plane corresponds to a protocol stack for user data transmission, and the control plane corresponds to a protocol stack for control signal transmission.

[0057] Referring to Figure 4 , the physical layer provides an information transfer service to the upper layer through a physical channel. The physical layer is connected to the medium access control (MAC) layer, which is the upper layer of the physical layer, through a transport channel. Data is transferred between the MAC layer and the physical layer through the transport channel. The transport channel is classified according to how data is transmitted through the radio interface and what characteristics of the data are transmitted.

[0058] Data is transferred through a physical channel between different PHY layers (i.e., the PHY layer of the transmitter and the PHY layer of the receiver). 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.

[0059] The MAC layer provides services to the radio link control (RLC) layer via a logical channel. The RLC layer is the upper layer of the MAC layer. The MAC layer provides the function of mapping multiple logical channels to multiple transport channels. The MAC layer also provides the function of logical channel multiplexing by mapping multiple logical channels to a single transport channel. The MAC layer provides a data transmission service through the logical channel.

[0060] The RLC layer performs concatenation, segmentation, and recombination of radio link control service data units (RLC SDUs). To ensure different quality of service (QoS) required for a radio bearer (RB), the RLC layer provides three types of operation modes, namely, transparent mode (TM), unacknowledged mode (UM), and acknowledged mode (AM). AM RLC provides error correction through automatic repeat request (ARQ).

[0061] The radio resource control (RRC) layer is only defined in the control plane. Also, the RRC layer performs functions of controlling physical channels, transport channels, and logical channels associated with the configuration, reconfiguration, and release of radio bearers. An RB refers to a logical path provided by the first layer (i.e., the PHY layer) and the second layer (i.e., the MAC layer, the RLC layer, and the packet data convergence protocol (PDCP) layer) to transfer data between a UE and a network.

[0062] The functions of the Packet Data Convergence Protocol (PDCP) in the user plane include the transmission of user data, header compression, and encryption. The functions of the Packet Data Convergence Protocol (PDCP) in the control plane include the transmission of control plane data and encryption / integrity protection.

[0063] 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) flows and Data Radio Bearers (DRBs) and the QoS flow ID (QFI) marking in both DL packets and UL packets.

[0064] The configuration of an RB refers to the process of specifying radio protocol layer and channel attributes to provide a specific service and of determining the corresponding detailed parameters and operation methods. An RB can then be classified into two types, namely, the Signaling Radio Bearer (SRB) and the Data Radio Bearer (DRB). The SRB is used as the path for sending RRC messages in the control plane, and the DRB is used as the path for sending user data in the user plane.

[0065] When an RRC connection is established between the RRC layer of the UE and the RRC layer of the E-UTRAN, the UE is in the RRC_CONNECTED state; otherwise, the UE can be in the RRC_IDLE state. In the case of NR, an RRC_INACTIVE state is additionally defined, and a UE in the RRC_INACTIVE state can maintain its connection to the core network while releasing its connection to the BS.

[0066] The downlink transport channels for sending (or transmitting) data from the network to the UE include the Broadcast Channel (BCH) for sending system information and the Downlink Shared Channel (SCH) for sending other user services or control messages. The services or control messages for downlink multicast or broadcast services can be sent via the downlink SCH or can be sent via a separate Downlink Multicast Channel (MCH). In addition, the uplink transport channels for sending (or transmitting) data from the UE to the network include the Random Access Channel (RACH) for sending initial control messages and the Uplink Shared Channel (SCH) for sending other user services or control messages.

[0067] The logical channels that exist at a layer higher than the transport channels and are mapped to the transport channels can include the Broadcast Control Channel (BCCH), the Paging Control Channel (PCCH), the Common Control Channel (CCCH), the Multicast Control Channel (MCCH), the Multicast Traffic Channel (MTCH), etc.

[0068] A physical channel is configured by multiple OFDM symbols in the time domain and multiple subcarriers in the frequency domain. A subframe is configured by multiple OFDM symbols in the time domain. A resource block is configured by multiple subcarriers and multiple OFDM symbols in a resource allocation unit. Additionally, each subframe can use specific subcarriers 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 time for transmitting a subframe.

[0069] Figure 5 FIG. shows the structure of an NR system according to an embodiment of the present disclosure. Figure 5 Embodiments of can be combined with various embodiments of the present disclosure.

[0070] Refer to Figure 5 , in NR, a radio frame can be used to perform uplink and downlink transmissions. The length of the radio frame is 10 ms and can be defined as being composed of two half-frames (HFs). A half-frame can include five 1-ms subframes (SFs). A subframe (SF) can be divided into one or more time slots, and the number of time slots within a subframe can be determined based on the subcarrier spacing (SCS). Each time slot can include 12 or 14 OFDM(A) symbols according to the cyclic prefix (CP).

[0071] In the case of using normal CP, each time slot can include 14 symbols. In the case of using extended CP, each time slot can include 12 symbols. Herein, a symbol can include an OFDM symbol (or CP-OFDM symbol) and a single-carrier FDMA (SC-FDMA) symbol (or discrete Fourier transform spread OFDM (DFT-s-OFDM) symbol).

[0072] For example, Table 1 below shows the number of time slots per symbol (N slot symb ), the number of time slots per frame (N frame,μ slot ), and the number of time slots per subframe (N subframe,μ slot ) based on the SCS setting (μ) in the case of using normal CP.

[0073] [Table 1]

[0074] <![CDATA[SCS(15*2 μ )]]> <![CDATA[N slot symb > <![CDATA[N frame,μ slot > <![CDATA[N subframe,μ slot > 15 KHz (μ = 0) 14 10 1 30 KHz (μ = 1) 14 20 2 60 KHz (μ = 2) 14 40 4 120 KHz (μ = 3) 14 80 8 240 KHz (μ = 4) 14 160 16

[0075] Table 2 shows examples of the number of symbols per time slot, the number of time slots per frame, and the number of time slots per subframe based on the SCS in the case of using extended CP.

[0076] [Table 2]

[0077] <![CDATA[SCS(15*2 μ )]]> <![CDATA[N slot symb > <![CDATA[N frame,μ slot > <![CDATA[N subframe,μ slot > 60 KHz (μ = 2) 12 40 4

[0078] In the NR system, the OFDM(A) parameter sets (e.g., SCS, CP length, etc.) among multiple cells integrated into a UE can be configured differently. Therefore, the (absolute time) duration (or interval) of a time resource (e.g., subframe, slot, or TTI) (collectively referred to as time unit (TU) for simplicity) composed of the same number of symbols can be configured differently in the integrated cells.

[0079] In NR, multiple parameter sets or SCSs can be supported to support various 5G services. For example, in the case of SCS being 15 kHz, a wide range of traditional cellular bands can be supported, and in the case of SCS being 30 kHz / 60 kHz, dense urban areas, lower latency, and wider carrier bandwidth can be supported. In the case of SCS being 60 kHz or higher, in order to overcome phase noise, a bandwidth greater than 24.25 GHz can be used.

[0080] NR bands can be defined as two different types of frequency ranges. The two different types of frequency ranges can be FR1 and FR2. The values of the frequency ranges can change (or vary), for example, the two different types of frequency ranges can be as shown in Table 3 below. Among the frequency ranges used in the NR system, 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).

[0081] [Table 3]

[0082]

[0083] As described above, the values of the frequency ranges in the NR system can change (or vary). For example, as shown in Table 4 below, FR1 can include the bandwidth in the range of 410 MHz to 7125 MHz. More specifically, FR1 can include the 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 bands. The unlicensed bands can be used for various purposes, for example, the unlicensed bands are used for vehicle-specific communication (e.g., autonomous driving).

[0084] [Table 4]

[0085] Frequency range specification Corresponding frequency range Subcarrier spacing (SCS) FR1 410 MHz – 7125 MHz 15, 30, 60 kHz FR2 24250 MHz – 52600 MHz 60, 120, 240 kHz

[0086] Figure 6 The structure of a slot of an NR frame based on an embodiment of the present disclosure is shown. Figure 6The embodiments may be combined with various embodiments of the present disclosure.

[0087] Referring to Figure 6 , a time slot includes a plurality of symbols in the time domain. For example, in the case of normal CP, one time slot may include 14 symbols. For example, in the case of extended CP, one time slot may include 12 symbols. Alternatively, in the case of normal CP, one time slot may include 7 symbols. However, in the case of extended CP, one time slot may include 6 symbols.

[0088] A carrier includes a plurality of subcarriers in the frequency domain. A resource block (RB) may be defined as a plurality of consecutive subcarriers in the frequency domain (e.g., 12 subcarriers). A bandwidth part (BWP) may be defined as a plurality of consecutive (physical) resource blocks ((P)RB) in the frequency domain, and the BWP may correspond to a parameter set (e.g., SCS, CP length, etc.). A carrier may include up to N BWPs (e.g., 5 BWPs). Data communication may be performed via an active BWP. Each element may be referred to as a resource element (RE) in a resource grid, and one complex symbol may be mapped to each element.

[0089] In addition, the radio interface between a UE and another UE or the radio interface between a UE and a network may include L1 layer, L2 layer, and L3 layer. In various embodiments of the present disclosure, the L1 layer may refer to the physical layer. Additionally, for example, the L2 layer may refer to at least one of the MAC layer, RLC layer, PDCP layer, and SDAP layer. Additionally, for example, the L3 layer may refer to the RRC layer.

[0090] Hereinafter, the bandwidth part (BWP) and the carrier will be described in detail.

[0091] A BWP may be a continuous set of physical resource blocks (PRBs) within a given parameter set. The PRBs may be selected from a continuous subset of common resource blocks (CRBs) for a given parameter set on a given carrier.

[0092] When using bandwidth adaptation (BA), it is not necessary for the receiving bandwidth and the transmitting bandwidth of a user equipment (UE) to be as wide (or large) as the bandwidth of the cell, and the receiving bandwidth and the transmitting bandwidth of the UE can be controlled (or adjusted). For example, the UE may receive information / configuration for bandwidth control (or adjustment) from the network / base station. In this case, the bandwidth control (or adjustment) may be performed based on the received information / configuration. For example, the bandwidth control (or adjustment) may include reduction / enlargement of the bandwidth, change of the position of the bandwidth, or change of the subcarrier spacing of the bandwidth.

[0093] For example, the bandwidth can be reduced during a duration with little activity to save power. For example, the position of the bandwidth can be relocated (or shifted) from the frequency domain. For example, the position of the bandwidth can be relocated (or shifted) from the frequency domain to enhance scheduling flexibility. For example, the subcarrier spacing of the bandwidth can be changed. For example, the subcarrier spacing of the bandwidth can be changed to authorize different services. A subset of the total cell bandwidth of a cell can be referred to as a Bandwidth Part (BWP). BA can be performed when the base station / network configures a BWP for the UE and when the base station / network notifies the UE of the currently active BWP among the BWPs.

[0094] For example, the BWP can be one of the active BWP, the initial BWP, and / or the default BWP. For example, the UE cannot monitor the downlink radio link quality in DL BWPs other than the active DL BWP within the primary cell (PCell). For example, the UE cannot receive a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), or a Channel State Information - Reference Signal (CSI-RS) (except for RRM) from outside the active DL BWP. For example, the UE cannot trigger a Channel State Information (CSI) report for an inactive DL BWP. For example, the UE cannot transmit a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH) from outside the non-active DL BWP. For example, in the case of the downlink, the initial BWP can be given as a continuous resource block (RB) set for the remaining minimum system information (RMSI) control resource set (CORESET) (configured by the Physical Broadcast Channel (PBCH)). For example, in the case of the uplink, the initial BWP can be given for the random access procedure by the System Information Block (SIB). For example, the default BWP can be configured by a higher layer. For example, the initial value of the default BWP can be the initial DL BWP. To save energy, if the UE cannot detect Downlink Control Information (DCI) within a predetermined period, the UE can switch the active BWP of the UE to the default BWP.

[0095] In addition, a BWP can be defined for SL. The same SL BWP can be used for transmission and reception. For example, the transmitting UE can transmit an SL channel or an SL signal within a specific BWP, and the receiving UE can receive the SL channel or the 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 configuration signaling separate from the Uu BWP. For example, the UE can receive the configuration for the SL BWP from the base station / network. The SL BWP can be (pre-)configured for NR V2X UEs and RRC_IDLE UEs outside the coverage area. For UEs operating in the RRC_CONNECTED mode, at least one SL BWP can be activated within the carrier.

[0096] Figure 7 Shows an example of a BWP based on an embodiment of the present disclosure. Figure 7 Embodiments of can be combined with various embodiments of the present disclosure. It is assumed that in Figure 7 the embodiment of, the number of BWPs is 3.

[0097] Referring to Figure 7 , a common resource block (CRB) can be a carrier resource block numbered from one end of the carrier band to the other end. Additionally, a PRB can be a resource block numbered within each BWP. Point A can indicate a common reference point of the resource block grid.

[0098] A BWP can be configured by point A, an offset relative to point A (N start BWP ) and a bandwidth (N size BWP ). For example, point A can be an external reference point of the PRBs of a carrier, and subcarrier 0 of all parameter sets (e.g., all parameter sets supported by the network on the corresponding carrier) is aligned at point A. For example, the offset can be the PRB distance between the lowest subcarrier within a given parameter set and point A. For example, the bandwidth can be the number of PRBs within a given parameter set.

[0099] Hereinafter, V2X or SL communication will be described.

[0100] Figure 8 Shows a radio protocol architecture for SL communication based on an embodiment of the present disclosure. Figure 8 Embodiments of can be combined with various embodiments of the present disclosure. More specifically, Figure 8 (a) of shows a user plane protocol stack, and Figure 8 (b) of shows a control plane protocol stack.

[0101] Next, sidelink synchronization signals (SLSS) and synchronization information will be described in detail.

[0102] The SLSS can include a primary sidelink synchronization signal (PSSS) and a secondary sidelink synchronization signal (SSSS) as SL-specific sequences. The PSSS can be referred to as a sidelink primary synchronization signal (S-PSS), and the SSSS can be referred to as a sidelink secondary synchronization signal (S-SSS). For example, an M sequence of length 127 can be used for the S-PSS, and a gold sequence of length 127 can be used for the S-SSS. For example, the UE can use the S-PSS for initial signal detection and synchronization acquisition. For example, the UE can use the S-PSS and S-SSS for obtaining detailed synchronization and for detecting the synchronization signal ID.

[0103] The Physical Sidelink Broadcast Channel (PSBCH) can be a (broadcast) channel for transmitting default (system) information that the UE must first know before SL signal transmission / reception. For example, the default information can be information related to SLSS, duplex mode (DM), time-division duplex (TDD) uplink / downlink (UL / DL) configuration, information related to resource pools, the type of application related to SLSS, subframe offset, broadcast information, etc. For example, in NR V2X, to evaluate the PSBCH performance, the payload size of the PSBCH can be 56 bits, including 24 bits of CRC.

[0104] The 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, Sidelink Synchronization Signal Block (S-SSB)). The S-SSB can have the same parameter set (i.e., SCS and CP length) as the Physical Sidelink Control Channel (PSCCH) / Physical Sidelink Shared Channel (PSSCH) in the carrier, and the transmission bandwidth can exist within a (pre-)configured Sidelink (SL) BWP. For example, the S-SSB can have a bandwidth of 11 resource blocks (SB). For example, the PSBCH can exist across 11 RBs. Additionally, the frequency position of the S-SSB can be (pre-)configured. Thus, the UE does not have to perform hypothesis detection at the frequency to discover the S-SSB in the carrier.

[0105] Figure 9 Shown is a UE that performs V2X or SL communication based on an embodiment of the present disclosure. Figure 9 Embodiments can be combined with various embodiments of the present disclosure.

[0106] Refer to Figure 9 , in V2X or SL communication, the term "UE" can generally refer to the UE of the user. However, if a network device such as a BS transmits / receives signals according to the communication scheme between UEs, the BS can also be regarded as a type of UE. For example, UE 1 can be the first device 100, and UE 2 can be the second device 200.

[0107] For example, UE 1 can select a resource unit corresponding to a specific resource in a resource pool that means a set of resource series. Additionally, UE 1 can transmit an SL signal by using the resource unit. For example, the resource pool in which UE 1 can transmit signals can be configured to UE 2 as the receiving UE, and the signal of UE 1 can be detected in this resource pool.

[0108] 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.

[0109] Generally, a resource pool can be configured in units of multiple resources, and each UE can select one or more resource units to use them in its SL signal transmission.

[0110] In the following, resource allocation in SL will be described.

[0111] 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 shown. Figure 10 Embodiments of can be combined with various embodiments of the present disclosure. In various embodiments of the present disclosure, the transmission mode can be referred to as a mode or a resource allocation mode. In the following, 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.

[0112] For example, Figure 10 (a) of shows UE operations related to LTE transmission mode 1 or LTE transmission mode 3. Alternatively, for example, Figure 10 (a) of shows UE operations related to NR resource allocation mode 1. For example, LTE transmission mode 1 can be applied to conventional SL communication, and LTE transmission mode 3 can be applied to V2X communication.

[0113] For example, Figure 10 (b) of shows UE operations related to LTE transmission mode 2 or LTE transmission mode 4. Alternatively, for example, Figure 10 (b) of shows UE operations related to NR resource allocation mode 2.

[0114] Referring to Figure 10 In (a) of, 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 in SL transmission. For example, the BS can perform resource scheduling on UE 1 through PDCCH (more specifically, downlink control information (DCI)), and UE 1 can perform V2X or SL communication for UE 2 according to the resource scheduling. For example, UE 1 can send sidelink control information (SCI) to UE 2 through the physical sidelink control channel (PSCCH), and then send data based on the SCI to UE 2 through the physical sidelink shared channel (PSSCH).

[0115] Referring to Figure 10In (b), in LTE transmission mode 2, LTE transmission mode 4, or NR resource allocation mode 2, the UE can determine the SL transmission resources within the SL resources configured by the BS / network or pre-configured SL resources. For example, the configured SL resources or pre-configured SL resources can be resource pools. 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 in the configured resource pool. For example, the UE can autonomously select resources within the selection window by performing a sensing and resource (re)selection process. For example, sensing can be performed on a sub-channel unit. Additionally, UE 1 that has autonomously selected resources in the resource pool can send an SCI to UE 2 via the PSCCH, and then can send data based on the SCI to UE 2 via the PSSCH.

[0116] Figure 11 Three broadcast types based on embodiments of the present disclosure are shown. Figure 11 Embodiments of can be combined with various embodiments of the present disclosure. Specifically, Figure 11 (a) of shows broadcast-type SL communication, Figure 11 (b) of shows unicast-type SL communication, and Figure 11 (c) of shows multicast-type SL communication. In the case of unicast-type SL communication, the UE can perform one-to-one communication for another UE. In the case of multicast-type SL transmission, the UE can perform SL communication for one or more UEs in the group to which the UE belongs. In various embodiments of the present disclosure, SL multicast communication can be replaced by SL multiple-cast communication, SL one-to-many communication, etc.

[0117] The abnormal transmission (TX) pool is a set of time-frequency resources for sidelink communication in specific abnormal scenarios. For example, in LTE V2X, the abnormal TX pool is used in the following situations: after detecting any physical layer problems such as radio link failure (RLF), after the initiated connection (re)establishment is nearly complete, during handover, and when the sensing result of the normal TX pool is unavailable.

[0118] For example, NR V2X introduces advanced use cases that require higher reliability and lower latency sidelink communication. It is also proposed to consider additional events: cell reselection and beam failure / reselection.

[0119] In the prior art, it has been agreed that the LTE V2X concept of an abnormal pool can be adopted for NR V2X. However, LTE serves the basic requirements of broadcast safety V2X services, so certain enhancements will be considered necessary for the strict QoS requirements responsible for advanced use cases. There are alternative solutions that can separate the abnormal TX pool according to the broadcast type, which can increase reliability but may result in lower resource efficiency.

[0120] For example, the UE physical layer transmission parameters can also be adjusted to ensure reliable and stable link performance under different radio channel conditions. Such adjustment can also help to meet strict QoS requirements. Open-loop and closed-loop power control mechanisms are exemplary physical layer parameters that can be used to optimize the power of the transmitter relative to the receiver.

[0121] For example, open-loop power control is a mechanism in which the transmitter determines its own transmission power based on a set of parameters. For example, closed-loop power control refers to a mechanism in which the receiver dynamically controls the transmitter power (e.g., when the BS controls the UE transmission power via a transmission power control command (TPC)).

[0122] As a result, the UE transmission power can be adjusted based on the information transmitted in a specific channel (e.g., PRACH, PUCCH, PUSCH).

[0123] The following mathematics Figure 1 can describe the UE closed-loop power control in PUSCH in NR.

[0124] [Mathematics Figure 1

[0125] P PUSCH = min{P CMAX , P0(j) + α(j)·PL(q) + 10·log 10 (2 μ ·M RB ) + Δ TF + δ(l)}

[0126] Referring to the mathematics Figure 1 , P CMAX can refer to the maximum power allocated for each carrier. P0(j) can define the target receiver power configured by the network. α0(j) can be the fractional path loss component configured by the network. PL(q) can refer to the estimation of the uplink path loss. μ can be the subcarrier spacing with Δf = 2 μ ·15 kHz. M RB can be the number of resource blocks used for PUSCH transmission. Δ TF can refer to the modulation scheme and channel coding rate. Δ(l) can be the power adjustment caused by the closed-loop power control. These parameters are functions of the power control mechanism. A similar mechanism can also be used along the sidelink (SL).

[0127] ​Next, the objectives that the present disclosure aims to solve will be described. For example, the objectives may include ensuring higher reliability of SL communication to meet strict NR V2X requirements and enhancing the performance of the abnormal resource pool for SL communication, especially in scenarios where the resource pool is experiencing high traffic load. Such high traffic load in the resource pool can be caused by multiple UEs performing different broadcast type sidelink communications (i.e., broadcast, multicast, and unicast), and depending on the QoS of each of these V2X services, this may result in a performance degradation in terms of reliability.

[0128] The following description aims to solve the above problems related to the enhancement of the abnormal pool.

[0129] Referring to the examples of the present disclosure, a resource selection method that allows a UE to select at least one abnormal Tx pool from a set of abnormal pools can be proposed. For example, a base station (e.g., gNB) can configure the set of abnormal pools in the system information. The set of abnormal pools can be differentiated according to occupancy rate or QoS implementation criteria. For example, in the context of QoS, there can be a set of abnormal pools. The set of abnormal pools can include at least one abnormal pool allocated with feedback resources (ensuring higher reliability of SL transmission) and at least one abnormal pool without feedback resources (no reliability requirement). For example, examples of feedback can include but are not limited to HARQ feedback, channel state information (CSI), closed-loop power control parameters.

[0130] For example, the base station can configure such an abnormal resource pool based on an effective area where the system information related to the resource pool can be valid. For example, the effective area can include a single or multiple sidelink regions, sectors, a single beam or a set of beams, a set of cells (e.g., a source cell and a target cell). For example, the selected abnormal pool can use a resource selection mechanism including random resource selection or short-term sensing resource selection. The resource selection mechanism can be selected or determined based on the following considerations: the QoS (PQI / VQI) of the associated V2X packet or QoS flow, or the resource occupancy rate (e.g., CBR) of the reported abnormal pool.

[0131] For example, here, short-term sensing is an operation of performing additional sensing at a predetermined time after selecting the transmission resource (the period from selecting the transmission resource until transmitting the signal) and discarding the selected transmission resource and selecting another resource when the possibility of a conflict is detected.

[0132] Referring to examples of the present disclosure, a method can be proposed in which a UE can select an abnormal pool with higher reliability (e.g., allocate feedback resources) according to a previous explicit or implicit indication as follows. For example, an explicit (direct) indication can include a process in which the UE can signal to a base station (BS) an indication of its need for an abnormal resource pool with higher reliability (allocate feedback resources). This can be performed before actually utilizing the abnormal resource pool. For example, an implicit indication can include the following process: If the UE was previously using a mode 1 resource pool with the ability to provide feedback, the UE can be authorized to maintain the same configuration and use an abnormal pool with feedback resources to maintain reliable service continuity.

[0133] Referring to examples of the present disclosure, the following method can be proposed: The UE can be configured with abnormal pools from two radio access technologies (RATs) simultaneously, for example, an abnormal pool from LTE system information configuration and an abnormal pool from NR system information configuration. For example, the UE can also be configured with NR abnormal pools from LTE RAT and NR RAT simultaneously. For example, the UE can also be configured with an LTE abnormal pool from LTE RAT and an NR abnormal pool from NR RAT simultaneously.

[0134] Referring to examples of the present disclosure, a method can be proposed in which the UE can use RRC signaling to request abnormal pool configuration.

[0135] Referring to examples of the present disclosure, a method can be proposed in which the UE can measure and report the resource occupancy rate of at least one abnormal pool using, for example, the channel busy rate (CBR), time, and frequency index, etc.

[0136] Referring to examples of the present disclosure, a method can be proposed in which the UE selects a specific transmission (Tx) profile for operation in an abnormal pool.

[0137] Referring to examples of the present disclosure, if an abnormal event such as a physical layer radio link failure (RLF) occurs, the UE can generally select a configured abnormal pool from the stored system information (e.g., SIB21). The key objective of the resource pool can be to improve service continuity in the event of an emergency, which stems from the initial D2D use case.

[0138] This description aims to enhance the abnormal pool configuration of the UE in order to enhance overall reliability and relieve the resource burden that may occur due to abnormal pools with high traffic.

[0139] Referring to examples of the present disclosure, the base station (BS) configures cell-specific or region-specific abnormal resource pool configurations including a set of abnormal pools. For example, the abnormal pools can be divided based on the occupancy level or the provided QoS level (e.g., reliability requirements), and the abnormal pools can include resource pools containing feedback resources or resource pools not allocated with feedback resources.

[0140] Figure 12 shows the process of the TX UE performing SL communication. Figure 12 Embodiments of can be combined with various embodiments of the present disclosure.

[0141] Referring to Figure 12 , in step S1210, the base station may send configuration information related to the exception pool to the TX UE. In step S1220, the TX UE may select, based on the QoS of the packet to be sent, an exception pool including feedback resources or another exception pool without feedback resources. This selection may be triggered based on at least one of physical layer problems, connection reestablishment, handover, or unavailable normal resource pools. And, the TX UE may select resources from the selected exception pool. In step S1230, the TX UE may use the resources to perform SL communication with the RX UE. If the selected exception pool includes feedback resources, then in step S1240, the RX UE may send feedback to the TX UE. The feedback may include at least one of HARQ feedback, channel state information (CSI), or closed-loop power control parameters.

[0142] For example, the UE may also use random resource selection or short-term sensing and resource (re)selection in the selected exception pool based on the QoS of the packet. Short-term sensing may be used to increase the reliability related to SL transmission in the selected exception pool. For example, the UE may also determine the resource selection method to be used according to the previously measured occupancy rate of the exception pool.

[0143] Referring to the examples of the present disclosure, the specified QoS and occupancy rate criteria may have to enable the UE to select the required exception pool from the configured set of exception pools. This may result in some UEs using only specific exception pools due to their QoS service level requirements. For example, this may be in the form of direct signaling or indirect indication.

[0144] For example, direct signaling may be in the form of a single-bit flag in an on-demand SI request related to the configuration of the exception pool type. The single-bit flag may distinguish a request for a normal exception pool without feedback resources (0) from a request for an exception pool with feedback resources (1).

[0145] For example, indirect indication may be that if the BS learns that SL communication using mode 1 is in progress, it may preemptively signal the exception pool configuration with feedback resources in order to maintain reliable service continuity.

[0146] For example, the BS may use dedicated signaling (e.g., via an RRCReconfiguration message) to signal the UE with a system information (SI) update.

[0147] Referring to examples of the present disclosure, a UE may be configured with exception pools from two radio access technologies (RATs) simultaneously. This feature enables the UE to utilize the simultaneous cross-RAT exception pool configuration by allowing the UE to select between the LTE exception pool or the NR exception pool for SL transmission according to QoS requirements. For example, in contrast to selecting the LTE-configured exception pool from the LTE RAT, the service in a UE with higher QoS requirements will select the NR exception pool from the NR RAT.

[0148] For example, as indicated by the V2X service in the upper layer and / or based on QoS requirements, a UE may be configured with two exception pools simultaneously. For example, if the UE is configured to perform Mode 1 and Mode 2 transmissions simultaneously, in the event of an exception, the UE may fallback to using the NR exception pool for Mode 1 transmission and the LTE exception pool for Mode 2 transmission.

[0149] Referring to examples of the present disclosure, an on-demand SI request for a specific exception pool configuration may be issued by the UE and sent to the BS. For example, an on-demand SI request for a highly reliable exception pool (e.g., an exception pool with feedback resources) may be an example. For example, this request may be sent preemptively before using the exception pool.

[0150] Figure 13 The process of a TX UE performing SL communication is shown. Figure 13 Embodiments of may be combined with various embodiments of the present disclosure.

[0151] Referring to Figure 13 , in step S1310, the TX UE may send a request related to the exception pool to the base station. In step S1320, the base station may send configuration information related to the exception pool to the TX UE based on this request. In step S1330, the TX UE may select an exception pool including feedback resources or another exception pool without feedback resources based on the QoS of the packet to be transmitted. This selection may be triggered by at least one of physical layer issues, connection reestablishment, handover, or an unavailable normal resource pool. And, the TX UE may select resources from the selected exception pool. In step S1340, the TX UE may use this resource to perform SL communication with the RX UE. If the selected exception pool includes feedback resources, then in step S1350, the RX UE may send feedback to the TX UE. For example, the feedback may include at least one of HARQ feedback, channel state information (CSI), or closed-loop power control parameters.

[0152] Referring to examples of the present disclosure, a UE may measure the resource occupancy rate of at least one abnormal pool or a set of abnormal pools and report the occupancy rate status to the BS. For example, the report may be in the form of a CBR value or in the form of explicitly indicating free or used resources and their corresponding time and frequency positions in the resource pool. For example, these measurements may occur regularly or be triggered by an event.

[0153] Referring to examples of the present disclosure, each application / service is mapped to a specific Tx profile to ensure compatibility, especially at the physical layer among different UEs. For example, compared with normal Tx pool operations, there are more constraints in terms of QoS guarantee and resource availability in the abnormal pool. In this regard, when using the abnormal pool as a fallback for the standard Tx profile operating on the normal Tx resource pool, the services / applications of the UE can be mapped to the abnormal Tx profile. The main motivation is that the abnormal pool cannot meet all the requirements specified in the standard Tx profile of the UE, so an alternative "abnormal" Tx profile with relevant physical layer transmission parameters adjusted accordingly should be selected.

[0154] For example, in the context of HARQ feedback, the standard TX profile may indicate the use of HARQ feedback in the sidelink (SL) for a certain application / service. However, it is not guaranteed that a specific abnormal pool enables SL HARQ feedback by allocating some resources for HARQ feedback transmission. In this case, when the UE falls back to the abnormal pool, if the abnormal pool is not configured with resources for HARQ feedback transmission or provides a different configuration with less frequently occurring HARQ feedback resources, making it difficult to meet the latency requirements, HARQ feedback will be automatically disabled. In this case, the UE should be able to adjust its transmission parameters accordingly to match the QoS of the standard Tx profile in a best-effort manner when HARQ feedback is disabled.

[0155] For example, when operating in the abnormal pool, the physical link layer parameters in the abnormal Tx profile can be adjusted. For example, the physical link layer parameters may include increasing the amount of blind retransmission. For example, the physical link layer parameters may include adopting a lower MCS, and more generally, using a different set of MCSs. For example, the physical link layer parameters may include adopting a lower-order MIMO transmission scheme, and more generally, using a different MIMO transmission scheme including different minimum and / or maximum transmission layers. For example, the physical link layer parameters may include disabling open-loop and / or closed-loop power control or using a different power control parameter configuration (including the target received power P0, the path loss compensation parameter alpha (α)). For example, the physical link layer parameters may include disabling beam-based power control.

[0156] Referring to the examples of the present disclosure, a set of exception Tx profiles that meet the needs of different combinations of PHY layer link parameters can be created. In the case where an exception pool is selected or used, this will require Tx profile switching. For example, when the Tx profile has changed, the corresponding service / application should also be notified.

[0157] Referring to the examples of the present disclosure, data units in the present disclosure (e.g., PDCP SDU, PDCP PDU, RLC SDU, RLC PDU, RLC SDU, MAC SDU, MAC CE, MAC PDU) are sent / received on physical channels (e.g., PDSCH, PUSCH) based on resource allocation (e.g., UL grant, DL assignment).

[0158] In the present disclosure, uplink resource allocation is also referred to as uplink grant, and downlink resource allocation is also referred to as downlink assignment. Resource allocation includes time-domain resource allocation and frequency-domain resource allocation. In the present disclosure, the uplink grant is either received dynamically by the UE on the PDCCH in the random access response or configured semi-permanently for the UE by RRC. In the present disclosure, the downlink assignment is either received dynamically by the UE on the PDCCH or configured semi-permanently for the UE by RRC signaling from the BS.

[0159] Figure 14 The process of the UE selecting transmission resources is shown. Figure 14 The embodiments of can be combined with various embodiments of the present disclosure.

[0160] Figure 14 It is a flowchart for illustrating the operation of the UE (or VRU, V2X, RSU, etc.) related to the above embodiments of the present disclosure. Referring to Figure 14 , in step S1410, the UE can receive configuration information for the exception resource pool from the base station. The exception resource pool is set differently according to the quality of service (QoS) or occupancy rate. Here, the use of the exception resource pool of the UE can be indicated implicitly or explicitly as indicated above. Next, in step S1420, the UE can select or determine the corresponding exception pool from the exception pool based on the QoS or the occupancy rate associated therewith. Next, in step S1430, the UE can determine the resource selection method based on the QoS, QoS flow, or CBR of the exception pool. Here, the resource selection method can include a random resource selection method and / or a resource selection method based on short-term sensing. The UE can send a message on the selected transmission resources based on the determined resource selection method.

[0161] Referring to examples of the present disclosure, a processor may implement the functions, processes, and / or methods proposed herein. The processor controls a transceiver to receive configuration information about an abnormal resource pool from a base station. The abnormal resource pool is differently set according to quality of service (QoS) or occupancy rate. Here, the use of the abnormal resource pool of the UE may be implicitly or explicitly indicated as indicated above. Next, the processor may select or determine a corresponding abnormal pool from the abnormal pools based on QoS or the occupancy rate associated therewith. Next, the processor may determine a resource selection method based on the QoS of the abnormal pool, QoS flow, or CBR. Here, the resource selection method may include a random resource selection method and / or a resource selection method based on short-term sensing. The processor may control the transceiver to send a message on the selected transmission resource based on the determined resource selection method.

[0162] For example, when dealing with abnormal radio events of different UEs with different QoS requirements, selecting more than one abnormal Tx pool allows for greater flexibility. For example, an abnormal pool allocated with feedback resources also allows the UE to perform more reliable sidelink communication in such abnormal scenarios. For example, an abnormal Tx profile enables the system to adapt relevant physical layer parameters to the use of the abnormal pool.

[0163] Figure 15 The process of a first device performing resource selection is shown. Figure 15 Embodiments of can be combined with various embodiments of the present disclosure.

[0164] Referring to Figure 15 , in step S1510, the first device may receive system information including configuration information related to an abnormal pool from a base station. For example, the abnormal pool may include a first abnormal pool containing feedback resources and a second abnormal pool not containing feedback resources. In step S1520, the first device may select the first abnormal pool or the second abnormal pool based on at least one of a physical layer problem, connection reestablishment, handover, or an unavailable normal resource pool. In step S1530, the first device may select a resource from the selected abnormal pool. In step S1540, the first device may use the resource to perform sidelink (SL) communication. For example, the first abnormal pool or the second abnormal pool may be selected based on the quality of service (QoS) of the packet to be sent.

[0165] For example, the first abnormal pool may be selected based on QoS requiring higher reliability.

[0166] For example, using a resource to perform SL communication includes: sending a packet to a second device; and receiving feedback from the second device.

[0167] For example, the feedback may include at least one of HARQ feedback, channel state information (CSI), or closed-loop power control parameters.

[0168] For example, the second exception pool can be selected based on QoS that does not require reliability.

[0169] For example, using a resource to perform SL communication includes: sending a packet to a second device. For example, feedback may not be received from the second device.

[0170] For example, the first exception pool can be selected based on at least one of cell reselection, beam failure, or beam reselection.

[0171] For example, the configuration information can be configured based on an effective area, and the effective area can include at least one of a single sidelink area, a sector, a single beam, or a cell set.

[0172] For example, a resource can be selected based on a resource selection mechanism including random resource selection or short-term sensing resource selection.

[0173] In addition, for example, the first device can send information related to the need for a more reliable exception pool to the base station, and the exception pool can include a more reliable exception pool.

[0174] For example, the first exception pool and the second exception pool can come from different radio access technologies (RATs).

[0175] For example, the first exception pool can come from the NR RAT, and the first exception pool can be selected based on QoS that requires higher reliability.

[0176] In addition, for example, the first device can send a request for a configuration related to an exception pool to the base station, and receive configuration information based on the request.

[0177] The above examples can be applied to the variable devices described below. For example, the processor (102) of the first device (100) can control the transceiver (106) to receive system information including configuration information related to an exception pool from the base station (200). For example, the processor (102) of the first device (100) can select the first exception pool or the second exception pool based on at least one of a physical layer problem, connection reconstruction, handover, or an unavailable normal resource pool. For example, the processor (102) of the first device (100) can select a resource from the selected exception pool. For example, the processor (102) of the first device (100) can control the transceiver to use the resource to perform sidelink (SL) communication.

[0178] Referring to examples of the present disclosure, a first device for performing wireless communication may be provided. The first device may include: one or more memories that store instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers. For example, the one or more processors may execute the instructions to: receive system information including configuration information related to an exception pool from a base station, where the exception pool includes a first exception pool containing feedback resources and a second exception pool not containing feedback resources; select the first exception pool or the second exception pool based on at least one of a physical layer problem, connection reconstruction, handover, or an unavailable normal resource pool; select resources from the selected exception pool; and use the resources to perform sidelink (SL) communication, where the first exception pool or the second exception pool is selected based on the quality of service (QoS) of the packet to be transmitted.

[0179] Referring to examples of the present disclosure, a device configured to control a first user equipment (UE) may be provided. The device may include: one or more processors; and one or more memories operably connected to the one or more processors and storing instructions. For example, the one or more processors execute the instructions to: receive system information including configuration information related to an exception pool from a base station, where the exception pool includes a first exception pool containing feedback resources and a second exception pool not containing feedback resources; select the first exception pool or the second exception pool based on at least one of a physical layer problem, connection reconstruction, handover, or an unavailable normal resource pool; select resources from the selected exception pool; and use the resources to perform sidelink (SL) communication, where the first exception pool or the second exception pool is selected based on the quality of service (QoS) of the packet to be transmitted.

[0180] Referring to examples of the present disclosure, a non-transitory computer-readable storage medium may be provided. The non-transitory computer-readable storage medium may store instructions that, when executed, cause a first device to: receive system information including configuration information related to an exception pool from a base station, where the exception pool includes a first exception pool containing feedback resources and a second exception pool not containing feedback resources; select the first exception pool or the second exception pool based on at least one of a physical layer problem, connection reconstruction, handover, or an unavailable normal resource pool; select resources from the selected exception pool; and use the resources to perform sidelink (SL) communication, where the first exception pool or the second exception pool is selected based on the quality of service (QoS) of the packet to be transmitted.

[0181] Figure 16 The process of the base station configuring the exception pool is shown.Figure 16 The implementation manners can be combined with various implementation manners of the present disclosure.

[0182] Referring to Figure 16 , in step S1610, the base station may send system information including configuration information related to the exception pool to the first device, where the exception pool includes a first exception pool containing feedback resources and a second exception pool not containing feedback resources. For example, the first exception pool or the second exception pool may be selected based on at least one of physical layer problems, connection reestablishment, handover, or an unavailable normal resource pool. For example, resources from the first exception pool may be selected. For example, the resources may be used to perform sidelink (SL) communication. For example, the first exception pool or the second exception pool may be selected based on the quality of service (QoS) of the packet to be sent.

[0183] In addition, for example, the base station may receive a request for a configuration related to the exception pool from the first device, and configuration information may be sent based on the request.

[0184] The above examples may be applied to the variable devices described below. For example, the processor (202) of the base station (200) may control the transceiver (206) to send system information including configuration information related to the exception pool to the first device (100).

[0185] Referring to the examples of the present disclosure, a base station for performing wireless communication may be provided. The base station may include: one or more memories storing instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers. For example, the one or more processors may execute the instructions to: send system information including configuration information related to the exception pool to the first device, where the exception pool includes a first exception pool containing feedback resources and a second exception pool not containing feedback resources; where the first exception pool or the second exception pool is selected based on at least one of physical layer problems, connection reestablishment, handover, or an unavailable normal resource pool; where resources from the first exception pool are selected, where the resources are used to perform sidelink (SL) communication, and where the first exception pool or the second exception pool is selected based on the quality of service (QoS) of the packet to be sent.

[0186] In addition, for example, the one or more processors further execute the instructions to: receive a request for a configuration related to the exception pool from the first device, and send configuration information based on the request.

[0187] Hereinafter, devices to which respective implementation manners of the present disclosure can be applied will be described.

[0188] The various descriptions, functions, processes, proposals, methods, and / or operational flows of the present disclosure described in this document can be applied to, but are not limited to, various fields that require wireless communication / connection (e.g., 5G) between devices.

[0189] In the following, a more detailed description will be given with reference to the accompanying drawings. In the following drawings / descriptions, unless otherwise described, the same reference numerals may represent the same or corresponding hardware blocks, software blocks, or functional blocks.

[0190] Figure 17 A communication system (1) based on an embodiment of the present disclosure is shown.

[0191] Referring to Figure 17 , the communication system (1) applying various embodiments of the present disclosure includes a wireless device, a base station (BS), and a network. Herein, the 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. The wireless device may include, but is not limited to, a robot (100a), vehicles (100b-1 and 100b-2), an extended reality (XR) device (100c), a handheld device (100d), a household appliance (100e), an Internet of Things (IoT) device (100f), and an artificial intelligence (AI) device / server (400). For example, the vehicle may include a vehicle with a wireless communication function, an autonomous vehicle, and a vehicle capable of performing vehicle-to-vehicle communication. Herein, the vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). The XR device may include an augmented reality (AR) / virtual reality (VR) / mixed reality (MR) device and may be implemented in the form of a head-mounted device (HMD), a head-up display (HUD) mounted in a vehicle, a television, a smart phone, a computer, a wearable device, a household appliance device, a digital sign, a vehicle, a robot, etc. The handheld device may include a smart phone, a smart board, a wearable device (e.g., a smart watch or smart glasses), and a computer (e.g., a notebook). The household appliance may include a TV, a refrigerator, and a washing machine. The IoT device may include sensors and smart meters. For example, the BS and the network may be implemented as wireless devices, and a specific wireless device (200a) may operate as a BS / network node with respect to other wireless devices.

[0192] Wireless devices 100a to 100f can be connected to network 300 via BS200. AI technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can be connected 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., sidelink 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.

[0193] Wireless communication / connection 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 through various RATs (e.g., 5G NR) such as uplink / downlink communication 150a, sidelink communication 150b (or D2D communication), or inter-BS communication (e.g., relay, integrated access and backhaul (IAB)). The wireless device and the BS / wireless device can send / receive radio signals to / from each other through wireless communication / connections 150a and 150b. For example, wireless communication / connections 150a and 150b can send / receive signals through various physical channels. To this end, at least a part of various configuration information configuration processes, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, and resource mapping / demapping), and resource allocation processes for sending / receiving radio signals can be performed based on various proposals of the present disclosure.

[0194] Figure 18 A wireless device according to an embodiment of the present disclosure is shown.

[0195] Referring to Figure 18 , the first wireless device (100) and the second wireless device (200) can send radio signals through various RATs (e.g., LTE and NR). Here, {the first wireless device (100) and the second wireless device (200)} can correspond to Figure 17 {wireless device (100x) and BS (200)} and / or {wireless device (100x) and wireless device (100x)} in

[0196] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and may additionally further include one or more transceivers 106 and / or one or more antennas 108. The (one or more) processors 102 may control the (one or more) memories 104 and / or the (one or more) transceivers 106, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operation flows disclosed in this document. For example, the (one or more) processors 102 may process the information in the (one or more) memories 104 to generate first information / signals, and then transmit radio signals including the first information / signals through the (one or more) transceivers 106. The (one or more) processors 102 may receive radio signals including second information / signals through the transceivers 106, and then store the information obtained by processing the second information / signals in the (one or more) memories 104. The (one or more) memories 104 may be connected to the (one or more) processors 102, and may store various information related to the operation of the (one or more) processors 102. For example, the (one or more) memories 104 may store software codes including commands for executing a part or all of the processing controlled by the (one or more) processors 102 or for executing the descriptions, functions, processes, proposals, methods, and / or operation flows disclosed in this document. Here, the (one or more) processors 102 and the (one or more) memories 104 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The (one or more) transceivers 106 may be connected to the (one or more) processors 102, and transmit and / or receive radio signals through the (one or more) antennas 108. Each transceiver 106 may include a transmitter and / or a receiver. The (one or more) transceivers 106 may be used interchangeably with the (one or more) radio frequency (RF) units. In this disclosure, the wireless device may represent a communication modem / circuit / chip.

[0197] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may additionally further include one or more transceivers 206 and / or one or more antennas 208. The (one or more) processors 202 may control the (one or more) memories 204 and / or the (one or more) transceivers 206, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operation flows disclosed in this document. For example, the (one or more) processors 202 may process the information in the (one or more) memories 204 to generate third information / signals, and then transmit radio signals including the third information / signals through the (one or more) transceivers 206. The (one or more) processors 202 may receive radio signals including fourth information / signals through the (one or more) transceivers 106, and then store the information obtained by processing the fourth information / signals in the (one or more) memories 204. The (one or more) memories 204 may be connected to the (one or more) processors 202, and may store various information related to the operation of the (one or more) processors 202. For example, the (one or more) memories 204 may store software codes including commands for executing a part or all of the processing controlled by the (one or more) processors 202 or for executing the descriptions, functions, processes, proposals, methods, and / or operation flows disclosed in this document. Here, the (one or more) processors 202 and the (one or more) memories 204 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The (one or more) transceivers 206 may be connected to the (one or more) processors 202, and transmit and / or receive radio signals through the (one or more) antennas 208. Each transceiver 206 may include a transmitter and / or a receiver. The (one or more) transceivers 206 may be used interchangeably with the (one or more) RF units. In the present disclosure, the wireless device may represent a communication modem / circuit / chip.

[0198] Next, the hardware components of wireless devices 100 and 200 will be described in more detail. One or more protocol layers may be implemented by one or more processors 102 and 202, but are not limited to this. For example, one or more processors 102 and 202 may implement one or more layers (such as 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 operation 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 operation flows disclosed in this document. One or more processors 102 and 202 may generate signals (such as baseband signals) including PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation 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 (such as baseband signals) from one or more transceivers 106 and 206, and obtain PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation flows disclosed in this document.

[0199] One or more processors 102 and 202 may be referred to as a controller, microcontroller, microprocessor, or microcomputer. 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, procedures, proposals, methods, and / or operation flows disclosed in this document may be implemented using firmware or software, and the firmware or software may be configured to include modules, procedures, or functions. The firmware or software configured to execute the descriptions, functions, procedures, proposals, methods, and / or operation 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, and thus be driven by one or more processors 102 and 202. The descriptions, functions, procedures, proposals, methods, and / or operation flows disclosed in this document may be implemented using software or firmware in the form of code, commands, and / or command sets.

[0200] 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 constituted by read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard drive, register, cache memory, computer-readable storage medium, and / or combinations thereof. One or more memories 104 and 204 may be located inside and / or outside 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 through various technologies such as wired or wireless connections.

[0201] One or more transceivers 106 and 206 may send user data, control information, and / or radio signals / channels mentioned in the methods and / or operation flows 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 operation flows 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 send and receive radio signals. For example, one or more processors 102 and 202 may execute controls such that one or more transceivers 106 and 206 may send user data, control information, or radio signals to one or more other devices. One or more processors 102 and 202 may execute controls 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 send and receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or operation flows 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 to process received user data, control information, radio signals / channels, etc. using one or more processors 102 and 202. One or more transceivers 106 and 206 may convert user data, control information, radio signals / channels, etc. processed using one or more processors 102 and 202 from baseband signals to RF band signals. To this end, one or more transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0202] Figure 19 A signal processing circuit for transmitting a signal according to an embodiment of the present disclosure is shown.

[0203] Referring to Figure 19 , the signal processing circuit (1000) may include a scrambler (1010), a modulator (1020), a layer mapper (1030), a precoder (1040), a resource mapper (1050), and a signal generator (1060). The operations / functions of Figure 19 may be performed, not limited to Figure 18 the processors (102, 202) and / or transceivers (106, 206) of Figure 18implemented by processors (102, 202) and / or transceivers (106, 206). Figure 19 hardware components. For example, blocks 1010 to 1060 can be implemented by Figure 18 the processors (102, 202). Alternatively, blocks 1010 to 1050 can be implemented by Figure 18 the processors (102, 202), and block 1060 can be implemented by Figure 18 the transceivers (106, 206).

[0204] It can be via Figure 19 the signal processing circuit (1000) to convert the codeword into a radio signal. Herein, the codeword is a coded bit sequence of an information block. The information block can include transport blocks (e.g., UL-SCH transport block, DL-SCH transport block). The radio signal can be sent through various physical channels (e.g., PUSCH and PDSCH).

[0205] Specifically, the codeword can be converted by the scrambler 1010 into a scrambled bit sequence. The scrambling sequence for scrambling can be generated based on an initial value, and the initial value can include the ID information of the wireless device. The scrambled bit sequence can be modulated by the modulator 1020 into a modulated symbol sequence. The modulation scheme can 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 modulated symbol sequence can be mapped by the layer mapper 1030 to one or more transmission layers. The modulation symbols of each transmission layer can be mapped (precoded) by the precoder 1040 to the corresponding antenna port(s). The output z of the precoder 1040 can be obtained by multiplying the output y of the layer mapper 1030 by the N*M precoding matrix W. Here, N is the number of antenna ports, and M is the number of transmission layers. The precoder 1040 can perform precoding after performing transform precoding (e.g., DFT) on the complex modulated symbols. Alternatively, the precoder 1040 can perform precoding without performing transform precoding.

[0206] The resource mapper 1050 can map the modulation symbols of each antenna port to time-frequency resources. The time-frequency resources can include multiple symbols in the time domain (e.g., CP-OFDMA symbols and DFT-s-OFDMA symbols) and multiple subcarriers in the frequency domain. The signal generator 1060 can generate a radio signal from the mapped modulation symbols, and the generated radio signal can be sent to other devices through each antenna. For this purpose, the signal generator 1060 can include an inverse fast Fourier transform (IFFT) module, a cyclic prefix (CP) inserter, a digital-to-analog converter (DAC), and an upconverter.

[0207] It can be configured in a manner opposite to the signal processing procedure (1010 to 1060) of Figure 19 the signal processing procedure for the signal received in the wireless device. For example, the wireless device (e.g., Figure 18 100 and 200) can receive radio signals from the outside through the antenna port / transceiver. The received radio signal can be converted into a baseband signal by the signal restorer. For this purpose, the signal restorer can include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a fast Fourier transform (FFT) module. Next, the baseband signal can be restored into a codeword through a resource demapping process, a post-coding process, a demodulation processor, and a descrambling process. The codeword can be restored into the original information block through decoding. Therefore, the signal processing circuit (not illustrated) for receiving signals can include a signal restorer, a resource demapper, a post-encoder, a demodulator, a descrambler, and a decoder.

[0208] Figure 20 Another example of a wireless device based on an embodiment of the present disclosure is shown. The wireless device can be implemented in various forms according to use cases / services (refer to Figure 17 ).

[0209] Referring to Figure 20 , the wireless devices (100 and 00) can correspond to the wireless devices (100 and 200) of Figure 18 and can be configured by various elements, components, units / parts, and / or modules. For example, each of the wireless devices (100 and 200) can include a communication unit (110), a control unit (120), a storage unit (130), and additional components (140). The communication unit can include a communication circuit (112) and one or more transceivers (114). For example, the communication circuit (112) can include Figure 18 one or more processors (102 and 202) and / or one or more memories (104 and 204) of Figure 18One or more transceivers (106 and 206) and / or one or more antennas (108 and 208). The control unit (120) is electrically connected to the communication unit (110), the memory / storage unit (130), and the additional components (140), and controls the overall operation of the wireless device. For example, the control unit (120) can control the electrical / mechanical operations of the wireless device based on programs / codes / commands / information stored in the storage unit (130). The control unit (120) can send the information stored in the storage unit (130) to the outside (e.g., other communication devices) via the communication unit (110) through a wireless / wired interface, or store the information received from the outside (e.g., other communication devices) via the communication unit (110) through a wireless / wired interface in the storage unit (130).

[0210] The additional components (140) can be configured in various ways according to the type of the wireless device. For example, the additional components (140) can 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 not limited to, the following forms: a robot ( Figure 17 100a), a vehicle ( Figure 17 100b-1 and 100b-2), an XR device ( Figure 17 100c), a handheld device ( Figure 17 100d), a household appliance ( Figure 17 100e), an IoT device ( Figure 17 100f), a digital broadcast terminal, a holographic device, a public safety device, an MTC device, a medical device, a fintech device (or financial device), a security device, a climate / environment device, an AI server / device ( Figure 17 400), a BS ( Figure 17 200), a network node, etc. According to the use case / service, the wireless device can be used in a mobile or fixed location.

[0211] In Figure 20In this case, various elements, components, units / parts, and / or modules in the wireless devices (100 and 200) can all be connected to each other through a wired interface, or at least some of them can be wirelessly connected through the communication unit (110). For example, in each of the wireless devices (100 and 200), the control unit (120) and the communication unit (110) can be connected by a wired connection, and the control unit (120) and the first units (e.g., 130 and 140) can be wirelessly connected through the communication unit (110). Each element, component, unit / part, and / or module within the wireless devices (100 and 200) can also include one or more elements. For example, the control unit (120) can be constructed by a set of one or more processors. As an example, the control unit (120) can be constructed by a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing unit, and a memory control processor. As another example, the memory (130) can be constructed by a random access memory (RAM), a dynamic RAM (DRAM), a read-only memory (ROM), a flash memory, a volatile memory, a non-volatile memory, and / or a combination thereof.

[0212] In the following, examples of implementing Figure 20 will be described in detail with reference to the accompanying drawings.

[0213] Figure 21 A handheld device based on an embodiment of the present disclosure is shown. The handheld device can include a smart phone, a smart board, a wearable device (e.g., a smart watch or smart glasses), or a portable computer (e.g., a notebook). The handheld device can be referred to as a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), an advanced mobile station (AMS), or a wireless terminal (WT).

[0214] Referring to Figure 21 , the handheld device (100) can 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) can be configured as part of the communication unit (110). Blocks 110 to 130 / 140a to 140c respectively correspond to Figure 20 blocks 110 to 130 / 140 of

[0215] The communication unit 110 may transmit and receive signals (e.g., data signals and control signals) to and from other wireless devices or a BS. The control unit 120 may perform various operations by controlling the components of the handheld device 100. The control unit 120 may include an application processor (AP). The storage unit 130 may store data / parameters / programs / codes / commands required to drive the handheld device 100. The storage unit 130 may store input / output data / information. The power supply unit 140a may supply power to the handheld device 100 and includes a wired / wireless charging circuit, a battery, etc. The interface unit 140b may support the connection of the handheld device 100 to other external devices. The interface unit 140b may include various ports for connecting to external devices (e.g., audio I / O ports and video I / O ports). The I / O unit 140c may input or output video information / signals, audio information / signals, data, and / or information input by a user. The I / O unit 140c may include a camera, a microphone, a user input unit, a display unit 140d, a speaker, and / or a haptic module.

[0216] For example, in the case of data communication, the I / O unit 140c may acquire information / signals input by a user (e.g., touch, text, voice, image, or video), and the acquired information / signals may be stored in the storage unit 130. The communication unit 110 may convert the information / signals stored in the memory into a radio signal and directly transmit the converted radio signal to other wireless devices or to a BS. The communication unit 110 may receive a radio signal from other wireless devices or a BS and then restore the received radio signal to the original information / signals. The restored information / signals may be stored in the storage unit 130 and may be output through the I / O unit 140 in various types (e.g., text, voice, image, video, or haptic).

[0217] Figure 22 A vehicle or an autonomous vehicle according to an embodiment of the present disclosure is shown. The vehicle or the autonomous vehicle may be implemented by a mobile robot, an automobile, a train, a manned / unmanned aerial vehicle (AV), a ship, etc.

[0218] Referring to Figure 22 , the vehicle or the autonomous vehicle (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a driving unit (140a), a power supply unit (140b), a sensor unit (140c), and an autonomous driving unit (140d). The antenna unit (108) may be configured as part of the communication unit (110). Blocks 110 / 130 / 140a to 140d respectively correspond to Figure 20 blocks 110 / 130 / 140 of

[0219] The communication unit 110 can send and receive signals (e.g., data signals and control signals) to and from external devices such as other vehicles, BSs (e.g., gNBs and roadside units), and servers. The control unit 120 can perform various operations by controlling elements of the vehicle or autonomous driving vehicle 100. The control unit 120 can include an electronic control unit (ECU). The driving unit 140a can cause the vehicle or autonomous driving vehicle 100 to travel on the road. The driving unit 140a can include an engine, a motor, a transmission system, wheels, brakes, a steering device, etc. The power supply unit 140b can supply power to the vehicle or autonomous driving vehicle 100 and can include a wired / wireless charging circuit, a battery, etc. The sensor unit 140c can acquire vehicle state, external environment information, user information, etc. The sensor unit 140c can include an inertial measurement unit (IMU) sensor, a collision sensor, a wheel sensor, a speed sensor, a slope sensor, a weight sensor, a heading sensor, a position module, a vehicle forward / backward sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, an illumination sensor, a pedal position sensor, etc. The autonomous driving unit 140d can implement technologies for maintaining the lane in which the vehicle travels, technologies for automatically adjusting speed (e.g., adaptive cruise control), technologies for autonomously driving along a determined path, technologies for driving by automatically setting a path when a destination is set, etc.

[0220] For example, the communication unit 110 can receive map data, traffic information data, etc. from an external server. The autonomous driving unit 140d can generate an autonomous driving path and a driving plan from the acquired data. The control unit 120 can control the driving unit 140a so that the vehicle or autonomous driving vehicle 100 can move along the autonomous driving path according to the driving plan (e.g., speed / direction control). During autonomous driving, the communication unit 110 can acquire the latest traffic information data from an external server non-periodically / periodically and acquire surrounding traffic information data from adjacent vehicles. During autonomous driving, the sensor unit 140c can acquire vehicle state and / or surrounding environment information. The autonomous driving unit 140d can update the autonomous driving path and the driving plan based on the newly acquired data / information. The communication unit 110 can transmit information about the vehicle position, autonomous driving path, and / or driving plan to an external server. The external server can use AI technology, etc. to predict traffic information data based on the information collected from the vehicle or autonomous driving vehicle and provide the predicted traffic information data to the vehicle or autonomous driving vehicle.

[0221] The claims in this specification can be combined in various ways. For example, the technical features in the method claims of this specification can be combined to be implemented or executed in a device, and the technical features in the device claims can be combined to be implemented or executed in a method. Additionally, the technical features in the (one or more) method claims and the (one or more) device claims can be combined to be implemented or executed in a device. Additionally, the technical features in the (one or more) method claims and the (one or more) device claims can be combined to be implemented or executed in a method.

Claims

1. A method for a first device to perform wireless communication, the method comprising the steps of: Obtaining information for an abnormal resource pool, wherein the abnormal resource pool includes resources on which the first device is allowed to send sidelink communication in an abnormal situation; and Determining that at least one HARQ feedback resource is configured for the abnormal resource pool in the case where hybrid automatic repeat request (HARQ) feedback for the sidelink communication is required.

2. The method according to claim 1, wherein, The abnormal situation is related to quality of service (QoS).

3. The method according to claim 1, wherein The abnormal situation is related to at least one of a physical layer problem, connection reestablishment, handover, or an unavailable normal resource pool.

4. The method according to claim 1, wherein, The abnormal situation is related to at least one of cell reselection, beam failure, or beam reselection.

5. The method according to claim 1, wherein Configuring the information based on an effective area, and wherein the effective area includes at least one of a single sidelink area, a sector, a single beam, or a cell set.

6. The method according to claim 1, the method further comprising the steps of: Selecting the resources based on a resource selection mechanism including random resource selection or short-term sensing resource selection.

7. The method according to claim 1, wherein The abnormal resource pool is from a New Radio (NR) radio access technology (RAT), and wherein the abnormal resource pool is related to QoS requiring higher reliability.

8. The method according to claim 1, the method further comprising the steps of: Sending a request for a configuration related to the abnormal resource pool to a base station, wherein the information is received based on the request.

9. A first device for performing wireless communication, the first device comprising: 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, wherein the one or more processors execute the instructions to: Obtain information for an abnormal resource pool, wherein the abnormal resource pool includes resources on which the first device is allowed to send sidelink communication in an abnormal situation; and Determine that at least one HARQ feedback resource is configured for the abnormal resource pool in the case where HARQ feedback for the sidelink communication is required.

10. A device configured to control a first user equipment (UE), the device comprising: One or more processors; And 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: Obtain information for an abnormal resource pool, wherein the abnormal resource pool includes resources on which the first UE is allowed to send sidelink communication in an abnormal situation; and Determine that at least one HARQ feedback resource is configured for the abnormal resource pool in the case where HARQ feedback for the sidelink communication is required.

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