User equipments and methods

Abstract

A user equipment (UE) is described. The UE may comprise reception circuitry and transmission circuitry; the transmission circuitry is configured to apply CPE starting position based on the second RRC parameter for one or more sidelink transmissions following the first sidelink transmission within the MCSt.

Description

[DESCRIPTION][Title of Invention]USER EQUIPMENTS AND METHODS[Technical Field]

[0001] The present invention relates to a user equipment and a method.[Background Art]

[0002] In the 3rd Generation Partnership Project (3GPP), a radio access method and a radio network for cellular mobile communications (hereinafter, referred to as Long Term Evolution, or Evolved Universal Terrestrial Radio Access) have been studied. In LTE (Long Term Evolution), a base station device is also referred to as an evolved NodeB (eNodeB), and a terminal device is also referred to as a User Equipment (UE). LTE is a cellular communication system in which multiple areas are deployed in a cellular structure, with each of the multiple areas being covered by a base station device. A single base station device may manage multiple cells. Evolved Universal Terrestrial Radio Access is also referred as E-UTRA. In one aspect, LTE has been modified to provide support and specification (TS 38.331, 38.321, 38.300, 37.340, 37.213, 38.211, 38.212, 38.213, 38.214, etc.) for the New Radio Access (NR) and Next generation - Radio Access Network (NG- RAN).

[0003] In the 3GPP, the next generation standard (New Radio: NR) has been studied in order to make a proposal to the Intemational-Mobile-Telecommunication-2020 (IMT- 2020) which is a standard for the next generation mobile communication system defined by the International Telecommunications Union (ITU). NR has been expected to satisfy a requirement considering three scenarios of enhanced Mobile BroadBand (eMBB),massive Machine Type Communication (mMTC), and Ultra Reliable and Low LatencyCommunication (URLLC), in a single technology framework.

[0004] At least some aspects of the systems and methods disclosed herein may be described in relation to the 3 GPP LTE, LTE-Advanced (LTE-A), LTE- Advanced Pro,New Radio Access (NR), and other 3G / 4G / 5G standards (e.g., 3GPP Releases 8, 9, 10,11, 12, 13, 14, 15, 16, 17, and / or 18, and / or Narrow Band-Internet of Things (NB-IoT)).However, the scope of the present disclosure should not be limited in this regard. At least some aspects of the systems and methods disclosed herein may be utilized in other types of wireless communication systems.

[0005] A wireless communication device may be an electronic device used to communicate voice and / or data to a base station, which in turn may communicate with a network of devices (e.g., public switched telephone network (PSTN), the Internet, etc.).In describing systems and methods herein, a wireless communication device may alternatively be referred to as a mobile station, a UE (User Equipment), an access terminal, a subscriber station, a mobile terminal, a remote station, a user terminal, a terminal, a subscriber unit, a mobile device, a relay node, etc. Examples of wireless communication devices include cellular phones, smart phones, personal digital assistants (PDAs), laptop computers, netbooks, e-readers, wireless modems, industrial wireless sensors, video surveillance, wearables, vehicles, roadside units, infrastructure devices, etc. In 3GPP specifications, a wireless communication device is typically referred to as a UE. However, as the scope of the present disclosure should not be limited to the 3GPP standards, the terms “UE” and “wireless communication device” may be used interchangeably herein to mean the more general term “wireless communication device”.

[0006] In 3 GPP specifications, a base station is typically referred to as a gNB, a NodeB, an eNB, a home enhanced or evolved Node B (HeNB) or some other similar terminology. As the scope of the disclosure should not be limited to 3GPP standards, the terms “base station”, “gNB”, “Node B”, “eNB”, and “HeNB” may be used interchangeably herein to mean the more general term “base station.” Furthermore, one example of a “base station” is an access point. An access point may be an electronic device that provides access to a network (e.g., Local Area Network (LAN), the Internet, etc.) for wireless communication devices. The term “communication device” may be used to denote both a wireless communication device and / or a base station.

[0007] It should be noted that as used herein, a “cell” may be any communication channel that is specified by standardization or regulatory bodies to be used forInternational Mobile Telecommunications-Advanced (IMT- Advanced), IMT-2020 (5G) and all of it or a subset of it may be adopted by 3GPP as licensed bands (e.g., frequency bands) to be used for communication between a base station and a UE. It should also be noted that in NR, NG-RAN, E-UTRA and E-UTRAN overall description, as used herein, a “cell” may be defined as “combination of downlink and optionally uplink resources.”The linking between the carrier frequency of the downlink resources and the carrier frequency of the uplink resources may be indicated in the system information transmitted on the downlink resources.

[0008] “Configured cells” are those cells of which the UE is aware and is allowed by a base station to transmit or receive information. “Configured cell(s)” may be serving cell(s). The UE may receive system information and perform the required measurements on configured cells. “Configured cell(s)” for a radio connection may consist of a primary cell and / or no, one, or more secondary cell(s). “Activated cells” are those configured cellson which the UE is transmitting and receiving. That is, activated cells are those cells for which the UE monitors the physical downlink control channel (PDCCH) and in the case of a downlink transmission, those cells for which the UE decodes a physical downlink shared channel (PDSCH). “Deactivated cells” are those configured cells that the UE is not monitoring the transmission PDCCH. It should be noted that a “cell” may be described in terms of differing dimensions. For example, a “cell” may have temporal, spatial (e.g., geographical) and frequency characteristics.

[0009] The base station devices may be connected by the NG interface to the 5G - core network (5G-CN). 5G-CN may be called as to NextGen core (NGC), or 5G core(5GC). The base station devices may also be connected by the SI interface to the evolved packet core (EPC). For instance, the base station devices may be connected to a NextGen(NG) mobility management function by the NG-2 interface and to the NG core User Plane(UP) functions by the NG-3 interface. The NG interface supports a many-to-many relation between NG mobility management functions, NG core UP functions and the base station devices. The NG-2 interface is the NG interface for the control plane and the NG-3 interface is the NG interface for the user plane. For instance, for EPC connection, the base station devices may be connected to a mobility management entity (MME) by the Sl -MME interface and to the serving gateway (S-GW) by the Sl-U interface. The SI interface supports a many-to-many relation between MMEs, serving gateways and the base station devices. The SI -MME interface is the SI interface for the control plane and the Sl -U interface is the SI interface for the user plane. The Uu interface is a radio interface between the UE and the base station for the radio protocol.

[0010] The radio protocol architecture may include the user plane and the control plane. The user plane protocol stack may include packet data convergence protocol(PDCP), radio link control (RLC), medium access control (MAC) and physical (PHY) layers. A DRB (Data Radio Bearer) is a radio bearer that carries user data (as opposed to control plane signaling). For example, a DRB may be mapped to the user plane protocol stack. The PDCP, RLC, MAC and PHY sublayers (terminated at the base station device on the network) may perform functions (e.g., header compression, ciphering, scheduling,ARQ and HARQ) for the user plane. PDCP entities are located in the PDCP sublayer.RLC entities may be located in the RLC sublayer. MAC entities may be located in theMAC sublayer. The PHY entities may be located in the PHY sublayer.

[0011] The control plane may include a control plane protocol stack. The PDCP sublayer (terminated in base station on the network side) may perform functions (e.g., ciphering and integrity protection) for the control plane. The RLC and MAC sublayers(terminated in base station on the network side) may perform the same functions as for the user plane. The Radio Resource Control (RRC) (terminated in base station on the network side) may perform the following functions. The RRC may perform broadcast functions, paging, RRC connection management, radio bearer (RB) control, mobility functions, UE measurement reporting and control. The Non-Access Stratum (NAS) control protocol (terminated in MME on the network side) may perform, among other things, evolved packet system (EPS) bearer management, authentication, evolved packet system connection management (ECM)-IDLE mobility handling, paging origination inECM-IDLE and security control.

[0012] Signaling Radio Bearers (SRBs) are Radio Bearers (RB) that may be used only for the transmission of RRC and NAS messages. Three SRBs may be defined. SRBO may be used for RRC messages using the common control channel (CCCH) logical channel. SRB1 may be used for RRC messages (which may include a piggybacked NASmessage) as well as for NAS messages prior to the establishment of SRB2, all using the dedicated control channel (DCCH) logical channel. SRB2 may be used for RRC messages which include logged measurement information as well as for NAS messages, all using the DCCH logical channel. SRB2 has a lower priority than SRB1 and may be configured by a network (e.g., base station) after security activation. A broadcast control channel(BCCH) logical channel may be used for broadcasting system information. Some ofBCCH logical channel may convey system information which may be sent from the network to the UE via BCH (Broadcast Channel) transport channel. BCH may be sent on a physical broadcast channel (PBCH). Some of BCCH logical channel may convey system information which may be sent from the network to the UE via DL-SCH(Downlink Shared Channel) transport channel. Paging may be provided by using paging control channel (PCCH) logical channel.

[0013] System information may be divided into the MasterlnformationBIock (MIB) and one or more SystemlnformationBlocks (SIBs).

[0014] The UE may receive one or more RRC messages from the base station device to obtain RRC configurations or parameters. The RRC layer of the UE may configureRRC layer and / or lower layers (e.g., PHY layer, MAC layer, RLC layer, PDCP layer) of the UE according to the RRC configurations or parameters which may be configured by the RRC messages, broadcasted system information, and so on. The base station device may transmit one or more RRC messages to the UE to cause the UE to configure RRC layer and / or lower layers of the UE according to the RRC configurations or parameters which may be configured by the RRC messages, broadcasted system information, and so on.

[0015] For example, wireless communication devices may communicate with one or more devices using a communication structure. However, the communication structure used may only offer limited flexibility and / or efficiency. As illustrated by this discussion, systems and methods that improve communication flexibility and / or efficiency may be beneficial.[Brief Description of the Drawings]

[0016] Figure 1 is a conceptual diagram of a wireless communication system according to an aspect of the present embodiment;

[0017] Figure 2 is an example showing the relationship between subcarrier-spacing configuration u, the number of OFDM symbols per slot NslotSymb, and the CP configuration according to an aspect of the present embodiment;

[0018] Figure 3 is a diagram showing an example of a method of configuring a resource grid according to an aspect of the present embodiment;

[0019] Figure 4 is a diagram showing a configuration example of a resource grid 3001 according to an aspect of the present embodiment;

[0020] Figure 5 is a schematic block diagram showing a configuration example of the base station device 3 according to an aspect of the present embodiment;

[0021] Figure 6 is a schematic block diagram showing a configuration example of the terminal device 1 according to an aspect of the present embodiment;

[0022] Figure 7 is a diagram showing a configuration example of an SS / PBCH block according to an aspect of the present embodiment;

[0023] Figure 8 is an example of the table of the channel access priority class according to an aspect of the present embodiment; and

[0024] Figure 9 is an example of the table of the variables Ciand Δifor sidelink cyclic prefix extension (CPE) according to an aspect of the present embodiment.[Description of Embodiments]

[0025] A user equipment (UE) is described. The UE may comprise a sensor configured to perform a channel access procedure immediately before an SL transmission, for operation with shared spectrum channel access, and a transmitter configured to perform the SL transmission if the channel access procedure is succeeded, if the SL transmission include including HARQ feedback enabled / disabled indicator field set to“disabled”, the transmitter is configured to transmit PSSCH on one or more unusedPSFCH occasions within a CO.

[0026] A method for a user equipment (UE) is described. The method may comprise performing a channel access procedure immediately before an SL transmission, for operation with shared spectrum channel access, performing the SL transmission if the channel access procedure is succeeded, and transmitting PSSCH on one or more unusedPSFCH occasions within a channel occupancy if the SL transmission include includingHARQ feedback enabled / disabled indicator field set to “disabled”.

[0027] floor (CX) may be a floor function for real number CX. For example, floor(CX) may be a function that provides the largest integer within a range that does not exceed the real number CX. ceil (DX) may be a ceiling function to a real number DX.For example, ceil (DX) may be a function that provides the smallest integer within the range not less than the real number DX. mod (EX, FX) may be a function that provides the remainder obtained by dividing EX by FX. mod (EX, FX) may be a function that provides a value which corresponds to the remainder of dividing EX by FX. It is exp (GX). Here, e is Napier number ) indicates IX to the power of HX.

[0028] In a wireless communication system according to one aspect of the present embodiment, at least OFDM (Orthogonal Frequency Division Multiplex) is used. AnOFDM symbol is a unit of time domain of the OFDM. The OFDM symbol includes at least one or more subcarriers. An OFDM symbol is converted to a time-continuous signal in baseband signal generation. In downlink, at least CP-OFDM (Cyclic Prefix-OrthogonalFrequency Division Multiplex) is used. In uplink, either CP-OFDM or DFT-s-OFDM(Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplex) is used.DFT-s-OFDM may be given by applying transform precoding to CP-OFDM. CP-OFDM is OFDM using CP (Cyclic Prefix).

[0029] Either DFT-s-OFDM or CP-OFDM may be given based whether or not transform precoder (or transform precoding) is enabled. DFT-s-OFDM may be given if the transform precoder is enabled. CP-OFDM may be given if the transform precoder is disabled.

[0030] The OFDM symbol may be a designation including a CP added to the OFDM symbol. That is, an OFDM symbol may be configured to include the OFDM symbol and a CP added to the OFDM symbol.

[0031] Figure 1 is a conceptual diagram of a wireless communication system according to an aspect of the present embodiment. In Figure 1 , the wireless communication system includes at least terminal device 1A to 1E and a base station device 3 (BS # 3: Base station # 3 or gNB #3). Hereinafter, the terminal devices 1A to 1E are also referred to as a terminal device 1 (UE # 1 : User Equipment # 1).

[0032] The base station device 3 may be configured to include one or more transmission devices (or transmission points, transmission devices, reception devices, transmission points, reception points). When the base station device 3 is configured by aplurality of transmission devices, each of the plurality of transmission devices may be arranged at a different position.

[0033] The base station device 3 may be included in the network. Therefore, the base station device 3 may be considered as a part of the network.

[0034] The base station device 3 may provide one or more serving cells. A serving cell may be defined as a set of resources used for wireless communication. A serving cell is also referred to as a cell.

[0035] A serving cell may be configured to include at least one downlink component carrier (downlink carrier) and / or one uplink component carrier (uplink carrier) and / or one sidelink component carrier (sidelink carrier). A serving cell may be configured to include at least two or more downlink component carriers and / or two or more uplink component carriers. A downlink component carrier and an uplink component carrier are also referred to as component carriers.

[0036] Downlink (DL) may be direct transmission from the base station device 3 to the terminal device(s) 1 using DL physical signal(s) and / or DL physical channel(s).

[0037] Uplink (UL) may be direct transmission from the terminal device 1 to the base station device 3 using UL physical signal(s) and / or UL physical channel(s).

[0038] Sidelink (SL) may be direct transmission from the terminal device 1 (e.g., terminal device 1A) to another terminal device 1 (e.g., terminal device 1D) using SL physical signal(s) and / or SL physical channel(s).

[0039] SL may be direct transmission from the terminal device 1 (e.g., terminal device 1D) to another terminal device 1 (e.g., terminal device 1A) using SL physical signal(s) and / or SL physical channel(s) out of coverage.

[0040] SL may be direct transmission from the terminal device 1 (e.g., terminal device 1D) to another terminal device 1 (e.g., terminal device 1E) using SL physical signal(s) and / or SL physical channel(s) out of coverage.

[0041] SL may be direct transmission from the terminal device 1 (e.g., terminal device 1E) to another terminal device 1 (e.g., terminal device 1D) using SL physical signal(s) and / or SL physical channel(s) out of coverage.

[0042] In some embodiments, a user equipment (UE) may be any of terminal device1 to terminal device 1E.

[0043] For example, one resource grid may be provided for one component carrier. For example, one resource grid may be provided for one component carrier and a subcarrier-spacing configuration u. A subcarrier-spacing configuration u is also referred to as numerology. A resource grid includes Nsize, ugrid,xNRBscsubcarriers. The resource grid starts from a common resource block with index Nstart, ugrid. The common resource block with the index Nstart, ugridis also referred to as a reference point of the resource grid. The resource grid includes Nsubframe,usymbOFDM symbols. The subscript x indicates the transmission direction and indicates either downlink or uplink or sidelink. One resource grid is provided for an antenna port p, a subcarrier-spacing configuration u, and a transmission direction x.

[0044] Resource grid is also referred to as carrier.

[0045] Nsize, ugrid,xand Nstart, ugridare given based at least on an RRC parameter (e.g. referred to as RRC parameter CarrierBandwidth). The RRC parameter is used to define one or more SCS (SubCarrier-Spacing) specific carriers. One resource grid corresponds to one SCS specific carrier. One component carrier may comprise one or more SCS specific carriers. The SCS specific carrier may be included in a system information block(SIB). For each SCS specific carrier, a subcarrier-spacing configuration u may be provided.

[0046] Figure 2 is an example showing the relationship between subcarrier-spacing configuration u, the number of OFDM symbols per slot NsIotsymb, and the CP configuration according to an aspect of the present embodiment. In Figure 2A, for example, when the subcarrier-spacing configuration u is set to 2 and the CP configuration is set to normal CP (normal cyclic prefix), NsIotsymb= 14, Nframe,uslot= 40, Nsubframe,uslot = 4. Further, in Figure 2B, for example, when the subcarrier-spacing configuration u is set to 2 and the CP configuration is set to an extended CP (extended cyclic prefix), Nslotsymb= 12, Nframe,uslot= 40, Nsubframe,uslot= 4.

[0047] In the wireless communication system according to an aspect of the present embodiment, a time unit Tcmay be used to represent the length of the time domain. The time unit Tcis Tc= 1 / (dfmax* Nf). It is dfmax= 480 kHz. It is Nf= 4096. The constant k is k = dfmax* Nf / (dfrefNf,ref) = 64. dfrefis 15 kHz. Nf,refis 2048.

[0048] Transmission of signals in the downlink and / or transmission of signals in the uplink may be organized into radio frames (system frames, frames) of length Tf. It is Tf = (dfmaxNf / 100) * Ts= 10 ms. One radio frame is configured to include ten subframes. The subframe length is Tsf = (dfmaxNf / 1000) Ts= 1 ms. The number of OFDM symbols per subframe is Nsubframe,usymb= NslotsymbNsubframe,uslot.

[0049] For a subcarrier-spacing configuration u, the number of slots included in a subframe and indexes may be given. For example, slot index nusmay be given in ascending order with an integer value ranging from 0 to Nsubframe,uslot-1 in a subframe. For subcarrier-spacing configuration u, the number of slots included in a radio frame and indexes of slots included in the radio frame may be given. Also, the slot index nus, f maybe given in ascending order with an integer value ranging from 0 to Nframe,uslot-1 in the radio frame. Consecutive NslotsymbOFDM symbols may be included in one slot. It is Nslotsymb= 14.

[0050] Figure 3 is a diagram showing an example of a method of configuring a resource grid according to an aspect of the present embodiment. The horizontal axis inFigure 3 indicates frequency domain. Figure 3 shows a configuration example of a resource grid of subcarrier-spacing configuration u = u1in the component carrier 300 and a configuration example of a resource grid of subcarrier-spacing configuration u = u2in a component carrier. One or more subcarrier-spacing configuration may be set for a component carrier. Although it is assumed in Figure 3 that u1= u2-1 , various aspects of this embodiment are not limited to the condition of u1= u2-1 .

[0051] The component carrier 300 is a band having a predetermined width in the frequency domain.

[0052] Point 3000 is an identifier for identifying a subcarrier. Point 3000 is also referred to as point A. The common resource block (CRB) set 3100 is a set of common resource blocks for the subcarrier-spacing configuration u1.

[0053] Among the common resource block-set 3100, the common resource block including the point 3000 (the block indicated by the upper right diagonal line in Figure 3) is also referred to as a reference point of the common resource block-set 3100. The reference point of the common resource block-set 3100 may be a common resource block with index 0 in the common resource block-set 3100.

[0054] The offset 3011 is an offset from the reference point of the common resource block-set 3100 to the reference point of the resource grid 3001. The offset 3011 is indicated by the number of common resource blocks which is relative to the subcarrier-spacing configuration u1. The resource grid 3001 includes Nsize, ugrid1 ,xcommon resource blocks starting from the reference point of the resource grid 3001 .

[0055] The offset 3013 is an offset from the reference point of the resource grid 3001 to the reference point (Nstart,uBWP,i1) of the BWP (BandWidth Part) 3003 of the index il .

[0056] Common resource block-set 3200 is a set of common resource blocks with respect to subcarrier-spacing configuration u2.

[0057] A common resource block including the point 3000 (a block indicated by a upper left diagonal line in Figure 3) in the common resource block-set 3200 is also referred to as a reference point of the common resource block-set 3200. The reference point of the common resource block-set 3200 may be a common resource block with index 0 in the common resource block-set 3200.

[0058] The offset 3012 is an offset from the reference point of the common resource block-set 3200 to the reference point of the resource grid 3002. The offset 3012 is indicated by the number of common resource blocks for subcarrier-spacing configuration u = u2. The resource grid 3002 includes Nslze,ugrid2,xcommon resource blocks starting from the reference point of the resource grid 3002.

[0059] The offset 3014 is an offset from the reference point of the resource grid 3002 to the reference point (Nstart,uBWP,i2) of the BWP 3004 with index i2.

[0060] Figure 4 is a diagram showing a configuration example of a resource grid 3001 according to an aspect of the present embodiment. In the resource grid of Figure 4, the horizontal axis indicates OFDM symbol index lsym, and the vertical axis indicates the subcarrier index ksc. The resource grid 3001 includes Nslze,ugrid 1,xNRBscsubcarriers, and includes Nsubframes,usymbOFDM symbols. A resource specified by the subcarrier index kscand the OFDM symbol index Isymin a resource grid is also referred to as a resource element (RE).

[0061] A resource block (RB) includes NRBscconsecutive subcarriers. A resource block is a generic name of a common resource block, a physical resource block (PRB), and a virtual resource block (VRB). It is NRBsc= 12.

[0062] A resource block unit is a set of resources that corresponds to one OFDM symbol in one resource block. That is, one resource block unit includes 12 resource elements which corresponds to one OFDM symbol in one resource block.

[0063] Common resource blocks for a subcarrier-spacing configuration u are indexed in ascending order from 0 in the frequency domain in a common resource block-set. The common resource block with index 0 for the subcarrier-spacing configuration u includes (or collides with, matches) the point 3000. The index nuCRBof the common resource block with respect to the subcarrier-spacing configuration u satisfies the relationship of nuCRB= ceil (ksc / NRBsc). The subcarrier with ksc= 0 is a subcarrier with the same center frequency as the center frequency of the subcarrier which corresponds to the point 3000.

[0064] Physical resource blocks for a subcarrier-spacing configuration u are indexed in ascending order from 0 in the frequency domain in a BWP. The index nuPRBof the physical resource block with respect to the subcarrier-spacing configuration u satisfies the relationship of nuCRB= nuPRB+ Nstart,uBWP,i. The Nstart,uBWP,iindicates the reference point of BWP with index i.

[0065] A BWP is defined as a subset of common resource blocks included in the resource grid. The BWP includes Nsize, uBWP,icommon resource blocks starting from the reference points Nstart,uBWP,i. A BWP for the downlink component carrier is also referred to as a downlink BWP. A BWP for the uplink component carrier is also referred to as anuplink BWP. A BWP for the sidelink component carrier is also referred to as a sidelinkBWP.

[0066] For the communication system, spectrum is divided into licensed spectrum and unlicensed spectrum. The NR technologies have been developed in the licensed spectrum and in the unlicensed spectrum. The operation in unlicensed spectrum, used as a complementary solution, can increase the throughput of the overall wireless communication system. However, operation in unlicensed spectrum is subject to regulatory limitations and restrictions. For example, the European TelecommunicationsStandards Institute (ETSI) has defined regulations for operation over the unlicensed spectrum. For example, the occupied channel bandwidth (OCB), which is defined as a bandwidth containing 99% of the signal power, should be larger than a percentage of the nominal channel bandwidth (NCB). For example, according to the ETSI regulations, theOCB should be between 70% and 100% of the NCB for 5GHz band. Here, the unlicensed spectrum may be referred to as the shared spectrum. The unlicensed spectrum may be different spectrum than the licensed spectrum.

[0067] An unlicensed band (or a carrier, or a subband) would be divided into one or multiple non-overlapping channels of 20MHz bandwidth in the frequency domain. For a(nominal) channel bandwidth of 20MHz, one transmission should occupy a channel bandwidth larger than what the regulation on OCB requires, for example, one transmission should be larger than 80% of the channel bandwidth of 20MHz to meet theOCB requirement. To meet the OCB requirement, the design of interlaced transmission had been introduced where each interlace transmission within a channel bandwidth can occupy a channel bandwidth being larger than what the OCB requires.

[0068] Interlaced transmission had been introduced to ensure the compliance with the regulations on OCB and NCB requirements. Specifically, the interlaced transmission is designed such that each interlace can occupy the channel bandwidth where the occupied channel bandwidth can fulfill the requirement of the OCB.

[0069] An interlace includes a set of resource blocks that are spread out across the bandwidth of a carrier in the frequency domain. A number of interlaces M is subject to the value of a SCS. That is, the number of interlaces M may be predefined according to a specific SCS. For example, if the SCS is equal to 15kHz, the number of resource block interlaces M is correspondingly equal to 10. If the SCS is equal to 30kHz, the number of resource block interlaces M is correspondingly equal to 5.

[0070] An antenna port is defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed. For example, the channel may correspond to a physical channel. For example, the symbols may correspond to OFDM symbols. For example, the symbols may correspond to resource block units. For example, the symbols may correspond to resource elements.

[0071] Two antenna ports are said to be QCL (Quasi Co-Located) if the large-scale properties of the channel over which a symbol on one antenna port is conveyed can be inferred from the channel over which a symbol on the other antenna port is conveyed.The large-scale properties include one or more of delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters.

[0072] Carrier aggregation may be communication using a plurality of aggregated serving cells. Carrier aggregation may be communication using a plurality of aggregated component carriers. Carrier aggregation may be communication using a plurality ofaggregated downlink component carriers. Carrier aggregation may be communication using a plurality of aggregated uplink component carriers. Carrier aggregation may be communication using a plurality of aggregated sidelink component carriers.

[0073] Figure 5 is a schematic block diagram showing a configuration example of the base station device 3 according to an aspect of the present embodiment. As shown inFigure 5, the base station device 3 includes at least apart or all of the wireless transmission / reception unit (physical layer processing unit) 30 and the higher-layer processing unit34. The wireless transmission / reception unit 30 includes at least a part or all of the antenna unit 31, the RF unit 32 (Radio Frequency unit 32), and the baseband unit 33. The higher-layer processing unit 34 includes at least a part or all of the medium access control layer processing unit 35 and the radio resource control (RRC) layer processing unit 36.

[0074] The wireless transmission / reception unit 30 includes at least a part of or all of a wireless transmission unit 30a and a wireless reception unit 30b. The configuration of the baseband unit 33 included in the wireless transmission unit 30a and the configuration of the baseband unit 33 included in the wireless reception unit 30b may be the same or different. The configuration of the RF unit 32 included in the wireless transmission unit 30a and the configuration of the RF unit 32 included in the wireless reception unit 30b may be the same or different. The configuration of the antenna unit 31 included in the wireless transmission unit 30a and the configuration of the antenna unit31 included in the wireless reception unit 30b may be the same or different.

[0075] The higher-layer processing unit 34 provides downlink data (a transport block) to the wireless transmission / reception unit 30 (or the wireless transmission unit 30a).The higher-layer processing unit 34 performs processing of a MAC layer, a PDCP layer, a RLC layer and / or an RRC layer.

[0076] The medium access control layer processing unit 35 included in the higher- layer processing unit 34 performs processing of the MAC layer.

[0077] The radio resource control layer processing unit 36 included in the higher- layer processing unit 34 performs the process of the RRC layer. The radio resource control layer processing unit 36 manages various configuration information / parameters (RRC parameters) of the terminal device 1. The radio resource control layer processing unit 36 configures an RRC parameter based on the RRC message received from the terminal device 1 ,

[0078] The wireless transmission / reception unit 30 (or the wireless transmission unit30a) performs processing such as encoding and modulation. The wireless transmission / reception unit 30 (or the wireless transmission unit 30a) generates a physical signal by encoding and modulating the downlink data. The wireless transmission / reception unit30 (or the wireless transmission unit 30a) converts OFDM symbols in the physical signal to a baseband signal by conversion to a time-continuous signal. The wireless transmission / reception unit 30 (or the wireless transmission unit 30a) transmits the baseband signal(or the physical signal) to the terminal device 1 via radio frequency. The wireless transmission / reception unit 30 (or the wireless transmission unit 30a) may arrange the baseband signal (or the physical signal) on a component carrier and transmit the baseband signal (or the physical signal) to the terminal device 1.

[0079] The wireless transmission / reception unit 30 (or the wireless reception unit30b) performs processing such as demodulation and decoding. The wireless transmission / reception unit 30 (or the wireless reception unit 30b) separates, demodulates and decodes the received physical signal, and provides the decoded information to the higher-layer processing unit 34. The wireless transmission / reception unit 30 (or the wireless receptionunit 30b) may perform the channel access procedure prior to the transmission of the physical signal.

[0080] The RF unit 32 demodulates the physical signal received via the antenna unit31 into a baseband signal (down convert), and / or removes extra frequency components.The RF unit 32 provides the processed analog signal to the baseband unit 33.

[0081] The baseband unit 33 converts an analog signal (signals on radio frequency) input from the RF unit 32 into a digital signal (a baseband signal). The baseband unit 33 separates a portion which corresponds to Cyclic Prefix (CP) from the digital signal. The baseband unit 33 performs Fast Fourier Transformation (FFT) on the digital signal from which the CP has been removed. The baseband unit 33 provides the physical signal in the frequency domain.

[0082] The baseband unit 33 performs Inverse Fast Fourier Transformation (IFFT) on downlink data to generate an OFDM symbol, adds a CP to the generated OFDM symbol, generates a digital signal (baseband signal), and convert the digital signal into an analog signal. The baseband unit 33 provides the analog signal to the RF unit 32.

[0083] The RF unit 32 removes extra frequency components from the analog signal(signals on radio frequency) input from the baseband unit 33, up-converts the analog signal to a radio frequency and transmits it via the antenna unit 31. The RF unit 32 may have a function of controlling transmission power. The RF unit 32 is also referred to as a transmission power control unit.

[0084] At least one or more serving cells (or one or more component carriers, one or more downlink component carriers, one or more uplink component carriers) may be configured for the terminal device 1.

[0085] Each of the serving cells set for the terminal device 1 may be any of PCell(Primary cell), PSCell (Primary SCG cell), and SCell (Secondary Cell).

[0086] A PCell is a serving cell included in a MCG (Master Cell Group). A PCell is a cell (implemented cell) which performs an initial connection establishment procedure or a connection re-establishment procedure by the terminal device 1.

[0087] A PSCell is a serving cell included in a SCG (Secondary Cell Group). APSCell is a serving cell in which random-access is performed by the terminal device 1 in a reconfiguration procedure with synchronization (Reconfiguration with synchronization).

[0088] A SCell may be included in either a MCG or a SCG.

[0089] The serving cell group (cell group) is a designation including at least MCG and SCG. The serving cell group may include one or more serving cells (or one or more component carriers). One or more serving cells (or one or more component carriers) included in the serving cell group may be operated by carrier aggregation.

[0090] One or more downlink BWPs may be configured for each serving cell (or each downlink component carrier). One or more uplink BWPs may be configured for each serving cell (or each uplink component carrier). One or more sidelink BWPs may be configured for each serving cell (or each sidelink component carrier).

[0091] Among the one or more downlink BWPs set for the serving cell (or the downlink component carrier), one downlink BWP may be set as an active downlink BWP(or one downlink BWP may be activated). Among the one or more uplink BWPs set for the serving cell (or the uplink component carrier), one uplink BWP may be set as an active uplink BWP (or one uplink BWP may be activated). Among the one or more sidelinkBWPs set for the serving cell (or the sidelink component carrier), one sidelink BWP may be set as an active sidelink BWP (or one sidelink BWP may be activated).

[0092] A PDSCH, a PDCCH, and a CSI-RS may be received in the active downlinkBWP. The terminal device 1 may receive the PDSCH, the PDCCH, and the CSI-RS in the active downlink BWP.

[0093] A PUCCH and a PUSCH may be sent on the active uplink BWP. The terminal device 1 may transmit the PUCCH and the PUSCH in the active uplink BWP.

[0094] APSCCH, aPSSCH, aPSFCH and aPSBCH maybe received and transmitted in the active sidelink BWP. The terminal device 1 may receive and / or transmit the PSCCH, the PSSCH, the PSFCH and / or the PSBCH in the active sidelink BWP.

[0095] The active downlink BWP and the active uplink BWP and the active sidelinkBWP are also referred to as active BWP.

[0096] The PDSCH, the PDCCH, and the CSI-RS may not be received in downlinkBWPs (inactive downlink BWPs) other than the active downlink BWP. The terminal device 1 may not receive the PDSCH, the PDCCH, and the CSI-RS in the downlink BWPs which are other than the active downlink BWP.

[0097] The PUCCH and the PUSCH do not need to be transmitted in uplink BWPs(inactive uplink BWPs) other than the active uplink BWP. The terminal device 1 may not transmit the PUCCH and the PUSCH in the uplink BWPs which is other than the active uplink BWP.

[0098] The PSCCH, the PSSCH, the PSFCH, and the PSBCH do not need to be received and / or transmitted in sidelink BWPs (inactive sidelink BWPs) other than the active sidelink BWP. The terminal device 1 may not receive and / or transmit the PSCCH, the PSSCH, the PSFCH and the PSBCH in the sidelink BWPs which is other than the active sidelink BWP.

[0099] The inactive downlink BWP and the inactive uplink BWP and the inactiveBWP are also referred to as inactive BWP.

[0100] Downlink BWP switching deactivates an active downlink BWP and activates one of inactive downlink BWPs which are other than the active downlink BWP. The downlink BWP switching may be controlled by a BWP field included in a downlink control information. The downlink BWP switching may be controlled based on higher- layer parameters.

[0101] Uplink BWP switching is used to deactivate an active uplink BWP and activate any inactive uplink BWP which is other than the active uplink BWP. Uplink BWP switching may be controlled by a BWP field included in a downlink control information.The uplink BWP switching may be controlled based on higher-layer parameters.

[0102] Sidelink BWP switching is used to deactivate an active sidelink BWP and activate any inactive sidelink BWP which is other than the active sidelink BWP. SidelinkBWP switching may be controlled by a BWP field included in a sidelink control information. The sidelink BWP switching may be controlled based on higher-layer parameters.

[0103] Among the one or more downlink BWPs set for the serving cell, two or more downlink BWPs may not be set as active downlink BWPs. For the serving cell, one downlink BWP may be active at a certain time.

[0104] Among the one or more uplink BWPs set for the serving cell, two or more uplink BWPs may not be set as active uplink BWPs. For the serving cell, one uplink BWP may be active at a certain time.

[0105] Among the one or more sidelink BWPs set for the serving cell, two or more sidelink BWPs may not be set as active sidelink BWPs. For the serving cell, one sidelink BWP may be active at a certain time.

[0106] Figure 6 is a schematic block diagram showing a configuration example of the terminal device 1 according to an aspect of the present embodiment. As shown in Figure 6, the terminal device 1 includes at least a part or all of the wireless transmission / reception unit (physical layer processing unit) 10 and the higher-layer processing unit 14. The wireless transmission / reception unit 10 includes at least a part or all of the antenna unit 11, the RF unit 12, and the baseband unit 13. The higher-layer processing unit 14 includes at least a part or all of the medium access control layer processing unit 15 and the radio resource control layer processing unit 16.

[0107] The wireless transmission / reception unit 10 includes at least a part of or all of a wireless transmission unit 10a and a wireless reception unit 10b. The configuration of the baseband unit 13 included in the wireless transmission unit 10a and the configuration of the baseband unit 13 included in the wireless reception unit 10b may be the same or different. The configuration of the RF unit 12 included in the wireless transmission unit 10a and the RF unit 12 included in the wireless reception unit 10b may be the same or different. The configuration of the antenna unit 11 included in the wireless transmission unit 10a and the configuration of the antenna unit 11 included in the wireless reception unit 10b may be the same or different.

[0108] The higher-layer processing unit 14 provides uplink data (a transport block) to the wireless transmission / reception unit 10 (or the wireless transmission unit 10a). The higher-layer processing unit 14 performs processing of a MAC layer, a packet data integration protocol layer, a radio link control layer, and / or an RRC layer.

[0109] The medium access control layer processing unit 15 included in the higher- layer processing unit 14 performs processing of the MAC layer.

[0110] The radio resource control layer processing unit 16 included in the higher- layer processing unit 14 performs the process of the RRC layer. The radio resource control layer processing unit 16 manages various configuration information / parameters (RRC parameters) of the terminal device 1. The radio resource control layer processing unit 16 configures RRC parameters based on the RRC message received from the base station device 3.

[0111] The wireless transmission / reception unit 10 (or the wireless transmission unit10a) performs processing such as encoding and modulation. The wireless transmission / reception unit 10 (or the wireless transmission unit 10a) generates a physical signal by encoding and modulating the uplink data. The wireless transmission / reception unit 10(or the wireless transmission unit 10a) converts OFDM symbols in the physical signal to a baseband signal by conversion to a time-continuous signal. The wireless transmission / reception unit 10 (or the wireless transmission unit 10a) transmits the baseband signal (or the physical signal) to the base station device 3 via radio frequency. The wireless transmission / reception unit 10 (or the wireless transmission unit 10a) may arrange the baseband signal (or the physical signal) on a BWP (active uplink BWP) and transmit the baseband signal (or the physical signal) to the base station device 3. The wireless transmission / reception unit 10 (or the wireless transmission unit 10a) may arrange the baseband signal (or the physical signal) on a BWP (active sidelink BWP) and transmit the baseband signal (or the physical signal) to another terminal device 1.

[0112] The wireless transmission / reception unit 10 (or the wireless reception unit10b) performs processing such as demodulation and decoding. The wireless transmission / reception unit 10 (or the wireless reception unit 10b) may receive a physical signal / physical channel in a BWP (active downlink BWP or active sidelink BWP) of a serving cell. The wireless transmission / reception unit 10 (or the wireless reception unit10b) separates, demodulates and decodes the received physical signal, and provides the decoded information to the higher-layer processing unit 14. The wireless transmission / reception unit 10 (or the wireless reception unit 10b) may perform the channel access procedure prior to the transmission of the physical signal / physical channel.

[0113] The RF unit 12 demodulates the physical signal received via the antenna unit11 into a baseband signal (down convert), and / or removes extra frequency components.The RF unit 12 provides the processed analog signal to the baseband unit 13.

[0114] The baseband unit 13 converts an analog signal (signals on radio frequency) input from the RF unit 12 into a digital signal (a baseband signal). The baseband unit 13 separates a portion which corresponds to CP from the digital signal, performs fast Fourier transformation on the digital signal from which the CP has been removed, and provides the physical signal in the frequency domain.

[0115] The baseband unit 13 performs inverse fast Fourier transformation on uplink data to generate an OFDM symbol, adds a CP to the generated OFDM symbol, generates a digital signal (baseband signal), and convert the digital signal into an analog signal. The baseband unit 13 provides the analog signal to the RF unit 12.

[0116] The RF unit 12 removes extra frequency components from the analog signal(signals on radio frequency) input from the baseband unit 13, up-converts the analog signal to a radio frequency, and transmits it via the antenna unit 11 The RF unit 12 may have a function of controlling transmission power. The RF unit 12 is also referred to as a transmission power control unit.

[0117] Hereinafter, physical signals (signals) will be described.

[0118] Physical signal is a generic term for downlink physical signals, uplink physical signals, and sidelink physical signals. The physical channel is a generic term for downlink physical channels, uplink physical channels, and sidelink channels.

[0119] An uplink physical channel may correspond to a set of resource elements that carry information originating from the higher-layer (e.g., MAC layer and / or RRC layer) and / or uplink control information. The uplink physical channel maybe a physical channel used in an uplink component carrier. The uplink physical channel may be transmitted by the terminal device 1. The uplink physical channel may be received by the base station device 3. In the wireless communication system according to one aspect of the present embodiment, at least part or all of PUCCH (Physical Uplink Control CHannel), PUSCH(Physical Uplink Shared CHannel), and PRACH (Physical Random Access CHannel) may be used.

[0120] A sidelink physical channel may correspond to a set of resource elements that carry information originating from the higher-layer (e.g., MAC layer and / or RRC layer) and / or sidelink control information. The sidelink physical channel may be a physical channel used in a sidelink component carrier. The sidelink physical channel may be received and / or transmitted by the terminal device 1. In the wireless communication system according to one aspect of the present embodiment, at least part or all of PSCCH(Physical Sidelink Control CHannel), PSSCH (Physical Sidelink Shared CHannel),PSFCH (Physical Sidelink Feedback CHannel) and PSBCH (Physical Sidelink BroadcastChannel) may be used.

[0121] A PUCCH may be used to transmit uplink control information (UCI). ThePUCCH may be sent to deliver (transmission, convey) uplink control information. Theuplink control information may be mapped to (or arranged in) the PUCCH. The terminal device 1 may transmit PUCCH in which uplink control information is arranged. The base station device 3 may receive the PUCCH in which the uplink control information is arranged.

[0122] Uplink control information (UCI, uplink control information bit, uplink control information sequence, uplink control information type) includes at least part or all of channel state information (CSI), scheduling request (SR), and HARQ-ACK (HybridAutomatic Repeat reQuest ACKnowledgement).

[0123] CSI is conveyed by using CSI bits or a CSI sequence. Scheduling request is also referred to as a SR bit or a scheduling request sequence. HARQ-ACK information is also referred to as a HARQ-ACK information bit or a HARQ-ACK information sequence.

[0124] HARQ-ACK information may include HARQ-ACK status which corresponds to a transport block. The HARQ-ACK status may indicate ACK (acknowledgement) orNACK (negative-acknowledgement) corresponding to the transport block. The ACK may indicate that the transport block has been successfully decoded. The NACK may indicate that the transport block has not been successfully decoded. The HARQ-ACK information may include a HARQ-ACK codebook that includes one or more HARQ-ACK status (orHARQ-ACK bits).

[0125] A transport block may be referred to as a medium access control protocol data unit (MAC PDU). A transport block may be referred to as a downlink shared channel(DL-SCH) (i.e., DL data) on PDSCH in DL. A transport block may be an uplink shared channel (UL-SCH) (i.e., UL data) on PUSCH in UL. A transport block may be a sidelink shared channel (SL-SCH) (i.e., ST data) on PSCCH / PSSCH in SL.

[0126] For example, the correspondence between the HARQ-ACK information and the transport block may mean that the HARQ-ACK information and the PDSCH used for transmission of the transport block correspond.

[0127] HARQ-ACK status may indicate ACK or NACK which correspond to oneCBG (Code Block Group) included in the transport block.

[0128] The channel state information may include at least part or all of a channel quality indicator (CQI), a precoder matrix indicator (PMI), and a rank indicator (RI). CQI is an indicator related to channel quality (e.g., propagation quality) or physical channel quality, and PMI is an indicator related to a precoder. RI is an indicator related to transmission rank (or the number of transmission layers).

[0129] CSI may be provided at least based on receiving one or more physical signals(e.g., one or more CSI-RSs) used at least for channel measurement. The CSI may be selected by the terminal device 1 at least based on receiving one or more physical signals used for channel measurement. Channel measurements may include interference measurements.

[0130] A PUCCH may correspond to a PUCCH format. A PUCCH may be a set of resource elements used to convey a PUCCH format. A PUCCH may include a PUCCH format. A PUCCH format may include UCI.

[0131] A PUSCH may be used to transmit uplink data (a transport block) and / or uplink control information. A PUSCH may be used to transmit uplink data corresponding to a UL-SCH and / or uplink control information. A PUSCH may be used to convey uplink data and / or uplink control information. A PUSCH may be used to convey uplink data corresponding to a UL-SCH and / or uplink control information. Uplink data may be arranged in a PUSCH. Uplink data corresponding to UL-SCH may be arranged in aPUSCH, Uplink control information may be arranged to a PUSCH. The terminal device1 may transmit a PUSCH in which uplink data and / or uplink control information is arranged. The base station device 3 may receive a PUSCH in which uplink data and / or uplink control information is arranged.

[0132] A PRACH may be used to transmit a random-access preamble. The PRACH may be used to convey a random-access preamble. The base station device 3 may receive the PRACH.

[0133] For a given PRACH opportunity, 64 random-access preambles are defined.The random-access preamble is specified (determined, given) at least based on the cyclic shift of the PRACH and the sequence index u for the PRACH.

[0134] An uplink physical signal may correspond to a set of resource elements. The uplink physical signal may not carry information generated in the higher-layer. The uplink physical signal may be a physical signal used in the uplink component carrier. The terminal device 1 may transmit an uplink physical signal. The base station device 3 may receive the uplink physical signal. In the radio communication system according to one aspect of the present embodiment, at least a part or all of UL DMRS (UpLinkDemodulation Reference Signal), SRS (Sounding Reference Signal), UL PTRS (UpLinkPhase Tracking Reference Signal) may be used.

[0135] UL DMRS is a generic name of a DMRS for a PUSCH and a DMRS for aPUCCH.

[0136] SL DMRS is a generic name of a DMRS for a PSSCH and a DMRS for aPSCCH and a DMRS for a PSBCH.

[0137] SL PTRS is a generic name of a PTRS for a PSSCH.

[0138] Transmission of a PUSCH and transmission of a DMRS for the PUSCH may be indicated (or scheduled) by one DCI format. The PUSCH and the DMRS for thePUSCH may be collectively referred to as a PUSCH. Transmission of the PUSCH may be transmission of the PUSCH and the DMRS for the PUSCH.

[0139] A PUSCH may be estimated from a DMRS for the PUSCH. That is, propagation path of the PUSCH may be estimated from the DMRS for the PUSCH.

[0140] Transmission of a PUCCH and transmission of a DMRS for the PUCCH may be indicated (or triggered) by one DCI format. The arrangement of the PUCCH in resource elements (resource element mapping) and / or the arrangement of the DMRS in resource elements for the PUCCH may be provided at least by one PUCCH format. ThePUCCH and the DMRS for the PUCCH may be collectively referred to as PUCCH.Transmission of the PUCCH may be transmission of the PUCCH and the DMRS for thePUCCH.

[0141] A PUCCH may be estimated from a DMRS for the PUCCH. That is, propagation path of the PUCCH may be estimated from the DMRS for the PUCCH.

[0142] A downlink physical channel may correspond to a set of resource elements that carry information originating from the higher-layer and / or downlink control information. The downlink physical channel may be a physical channel used in the downlink component carrier. The base station device 3 may transmit the downlink physical channel. The terminal device 1 may receive the downlink physical channel. In the wireless communication system according to one aspect of the present embodiment, at least a part or all of PBCH (Physical Broadcast Channel), PDCCH (Physical DownlinkControl Channel), and PDSCH (Physical Downlink Shared Channel) may be used.

[0143] The PBCH may be used to transmit a MIB (Master Information Block) and / or physical layer control information. The physical layer control information is a kind of downlink control information. The PBCH may be sent to deliver the MIB and / or the physical layer control information. A BCH may be mapped (or corresponding) to thePBCH. The terminal device 1 may receive the PBCH. The base station device 3 may transmit the PBCH. The physical layer control information is also referred to as a PBCH payload and a PBCH payload related to timing. The MIB may include one or more higher- layer parameters.

[0144] Physical layer control information includes 8 bits. The physical layer control information may include at least part or all of 0A to 0D. The 0A is radio frame information.The OB is half radio frame information (half system frame information). The 0C isSS / PBCH block index information. The 0D is subcarrier offset information.

[0145] The radio frame information is used to indicate a radio frame in which thePBCH is transmitted (a radio frame including a slot in which the PBCH is transmitted).The radio frame information is represented by 4 bits. The radio frame information may be represented by 4 bits of a radio frame indicator. The radio frame indicator may include10 bits. For example, the radio frame indicator may at least be used to identify a radio frame from index 0 to index 1023.

[0146] The half radio frame information is used to indicate whether the PBCH is transmitted in first five subframes or in second five subframes among radio frames in which the PBCH is transmitted. Here, the half radio frame may be configured to include five subframes. The half radio frame may be configured by five subframes of the first half of ten subframes included in the radio frame. The half radio frame may be configured by five subframes in the second half of ten subframes included in the radio frame.

[0147] The SS / PBCH block index information is used to indicate an SS / PBCH block index. The SS / PBCH block index information may be represented by 3 bits. TheSS / PBCH block index information may consist of 3 bits of an SS / PBCH block index indicator. The SS / PBCH block index indicator may include 6 bits. The SS / PBCH block index indicator may at least be used to identify an SS / PBCH block from index 0 to index63 (or from index 0 to index 3, from index 0 to index 7, from index 0 to index 9, from index 0 to index 19, etc.).

[0148] The subcarrier offset information is used to indicate subcarrier offset. The subcarrier offset information may be used to indicate the difference between the first subcarrier in which the PBCH is arranged and the first subcarrier in which the control resource set with index 0 is arranged.

[0149] A PDCCH may be used to transmit downlink control information (DCI). APDCCH may be transmitted to deliver downlink control information. Downlink control information may be mapped to a PDCCH. The terminal device 1 may receive a PDCCH in which downlink control information is arranged. The base station device 3 may transmit the PDCCH in which the downlink control information is arranged.

[0150] Downlink control information may correspond to a DCI format. Downlink control information may be included in a DCI format. Downlink control information may be arranged in each field of a DCI format.

[0151] DCI format is a generic name for DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_1. Uplink DCI format is a generic name of the DCI format0_0 and the DCI format 0_1. Downlink DCI format is a generic name of the DCI format1_0 and the DCI format 1_1. Sidelink DCI format is a generic name of the DCI format3 0 and the DCI format 3 1.

[0152] DCI format 0_0 is used for the scheduling of PUSCH in one cell.

[0153] DCI format 0_1 is used for the scheduling of one or multiple PUSCH in one cell or indicating CG downlink feedback information (CG-DFI) to a UE.

[0154] DCI format 1_0 is used for the scheduling of PDSCH in one DL cell.

[0155] DCI format 1_1 is used for the scheduling of one or multiple PDSCH in one cell.

[0156] DCI format 3_0 is used for scheduling of NR PSCCH and NR PSSCFI in one cell. The DCI format 3_0 is also referred to as the sidelink grant.

[0157] DCI format 3_1 is used for scheduling of LTE PSCCH and LTE PSSCH in one cell.

[0158] The DCI format l_0 is at least used for scheduling of a PDSCH for a cell(arranged on a cell). The DCI format l_0 may include at least a part or all of fields 3 A to3F. The 3A is a DCI format identification field. The 3B is a frequency domain resource assignment field. The 3C is a time domain resource assignment field. The 3D is an MCS field. The 3E is a PDSCH-to-HARQ-feedback indicator field. The 3F is a PUCCH resource indicator field.

[0159] The DCI format 1_1 is at least used for scheduling of a PDSCH for a cell (or arranged on a cell). The DCI format 1_1 includes at least a part or all of fields 4A to 4H.The 4A is a DCI format identification field. The 4B is a frequency domain resource assignment field. The 4C is a time domain resource assignment field. The 4D is an MCS field. The 4E is a PDSCH-to-HARQ-feedback indicator field. The 4F is a PUCCH resource indicator field. The 4G is a BWP field. The 4H is a carrier indicator field.

[0160] If the DCI format 1_1 includes the carrier indicator field, the carrier indicator field may be used to indicate a downlink component carrier (or a serving cell) on whicha PDSCH is arranged. When the DCI format 1_1 does not include the carrier indicator field, a downlink component carrier (or a serving cell) on which a PDSCH is arranged may be the same as a downlink component carrier (or a serving cell) on which a PDCCH including the DCI format 1_1 used for scheduling of the PDSCH is arranged. When the number of downlink component carriers (or the number of serving cells) configured in the terminal device 1 in a serving cell group is two or more (when downlink carrier aggregation is operated in a serving cell group), or when cross-carrier scheduling is configured for the serving cell group, the number of bits for the carrier indicator field included in the DCI format 1_1 used for scheduling a PDSCH arranged on the serving cell group may be one or more (e.g., 3). When the number of downlink component carriers (or the number of serving cells) configured in the terminal device 1 in a serving cell group is one (or wheri downlink carrier aggregation is not operated in a serving cell group), or when the cross-carrier scheduling is not configured for the serving cell group, the number of bits for the carrier indicator field included in the DCI format 1_1 used for scheduling of a PDSCH arranged on the serving cell group may be zero.

[0161] A PDSCH may be used to transmit one or more transport blocks. A PDSCH may be used to transmit one or more transport blocks which corresponds to a DL-SCH. A PDSCH may be used to convey one or more transport blocks. A PDSCH may be used to convey one or more transport blocks which corresponds to a DL-SCH. One or more transport blocks may be arranged in a PDSCH. One or more transport blocks which corresponds to a DL-SCH may be arranged in a PDSCH. The base station device 3 may transmit a PDSCH. The terminal device 1 may receive the PDSCH.

[0162] Downlink physical signals may correspond to a set of resource elements. The downlink physical signals may not carry the information generated in the higher-layer.The downlink physical signals may be physical signals used in the downlink component carrier. A downlink physical signal may be transmitted by the base station device 3. The downlink physical signal may be transmitted by the terminal device 1. In the wireless communication system according to one aspect of the present embodiment, at least a part or all of an SS (Synchronization signal), DL DMRS (DownLink DeModulation ReferenceSignal), CSI-RS (Channel State Information-Reference Signal), and DL PTRS(DownLink Phase Tracking Reference Signal) may be used.

[0163] The synchronization signal may be used at least for the terminal device 1 to synchronize in the frequency domain and / or time domain for downlink. The synchronization signal is a generic name of PSS (Primary Synchronization Signal) andSSS (Secondary Synchronization Signal).

[0164] Figure 7 is a diagram showing a configuration example of an SS / PBCH block according to an aspect of the present embodiment. In Figure 7, the horizontal axis indicates time domain (OFDM symbol index lsym), and the vertical axis indicates frequency domain. The shaded blocks indicate a set of resource elements for a PSS. The blocks of grid lines indicate a set of resource elements for an SSS. Also, the blocks in the horizontal line indicate a set of resource elements for a PBCH and a set of resource elements for a DMRS for the PBCH (DMRS related to the PBCH, DMRS included in thePBCH, DMRS which corresponds to the PBCH).

[0165] As shown in Figure 7, the SS / PBCH block includes a PSS, an SSS, and aPBCH. The SS / PBCH block includes 4 consecutive OFDM symbols. The SS / PBCH block includes 240 subcarriers. The PSS is allocated to the 57th to 183rd subcarriers in the first OFDM symbol. The SSS is allocated to the 57th to 183rd subcarriers in the thirdOFDM symbol. The first to 56th subcarriers of the first OFDM symbol may be set to zero.The 184th to 240th subcarriers of the first OFDM symbol may be set to zero. The 49th to 56th subcarriers of the third OFDM symbol may be set to zero. The 184th to 192nd subcarriers of the third OFDM symbol may be set to zero. In the first to 240th subcarriers of the second OFDM symbol, the PBCH is allocated to subcarriers in which the DMRS for the PBCH is not allocated. In the first to 48th subcarriers of the third OFDM symbol, the PBCH is allocated to subcarriers in which the DMRS for the PBCH is not allocated. In the 193rd to 240th subcarriers of the third OFDM symbol, the PBCH is allocated to subcarriers in which the DMRS for the PBCH is not allocated. In the first to 240th subcarriers of the 4th OFDM symbol, the PBCH is allocated to subcarriers in which the DMRS for the PBCH is not allocated.

[0166] The antenna ports of a PSS, an SSS, a PBCH, and a DMRS for the PBCH in an SS / PBCH block may be identical.

[0167] A PBCH may be estimated from a DMRS for the PBCH. For the DM-RS for the PBCH, the channel over which a symbol for the PBCH on an antenna port is conveyed can be inferred from the channel over which another symbol for the DM-RS on the antenna port is conveyed only if the two symbols are within a SS / PBCH block transmitted within the same slot, and with the same SS / PBCH block index.

[0168] DL DMRS is a generic name of DMRS for a PBCH, DMRS for a PDSCH, and DMRS for a PDCCH.

[0169] A set of antenna ports for a DMRS for a PDSCH (a DMRS associated with a PDSCH, a DMRS included in a PDSCH, a DMRS which corresponds to a PDSCH) may be given based on the set of antenna ports for the PDSCH. The set of antenna ports for the DMRS for the PDSCH may be the same as the set of antenna ports for the PDSCH.

[0170] Transmission of a PDSCH and transmission of a DMRS for the PDSCH may be indicated (or scheduled) by one DCI format. The PDSCH and the DMRS for thePDSCH may be collectively referred to as PDSCH. Transmitting a PDSCH may be transmitting a PDSCH and a DMRS for the PDSCH.

[0171] A PDSCH may be estimated from a DMRS for the PDSCH. For a DM-RS associated with a PDSCH, the channel over which a symbol for the PDSCH on one antenna port is conveyed can be inferred from the channel over which another symbol for the DM-RS on the antenna port is conveyed only if the two symbols are within the same resource as the scheduled PDSCH, in the same slot, and in the same PRG (PrecodingResource Group).

[0172] Antenna ports for a DMRS for a PDCCH (a DMRS associated with a PDCCH, a DMRS included in a PDCCH, a DMRS which corresponds to a PDCCH) may be the same as an antenna port for the PDCCH.

[0173] A PDCCH may be estimated from a DMRS for the PDCCH. For a DM-RS associated with a PDCCH, the channel over which a symbol for the PDCCH on one antenna port is conveyed can be inferred from the channel over which another symbol for the DM-RS on the same antenna port is conveyed only if the two symbols are within resources for which the UE may assume the same precoding being used (i.e. within resources in a REG bundle).

[0174] A BCH (Broadcast CHannel), a UL-SCH (Uplink-Shared CHannel) and a DL-SCH (Downlink-Shared CHannel) are transport channels. A channel used in the MAC layer is called a transport channel. A unit of transport channel used in the MAC layer is also called transport block (TB) or MAC PDU (Protocol Data Unit). In the MAC layer, control of HARQ (Hybrid Automatic Repeat request) is performed for each transportblock. The transport block is a unit of data delivered by the MAC layer to the physical layer. In the physical layer, transport blocks are mapped to codewords and modulation processing is performed for each codeword.

[0175] One UL-SCH and one DL-SCH may be provided for each serving cell. BCH may be given to PCell. BCH may not be given to PSCell and SCell.

[0176] A BCCH (Broadcast Control CHannel), a CCCH (Common Control CHannel), and a DCCH (Dedicated Control CHannel) are logical channels. The BCCH is a channel of the RRC layer used to deliver MIB or system information. The CCCH may be used to transmit a common RRC message in a plurality of terminal devices 1. The CCCH may be used for the terminal device 1 which is not connected by RRC. The DCCH may be used at least to transmit a dedicated RRC message to the terminal device 1. The DCCH may be used for the terminal device 1 that is in RRC-connected mode.

[0177] The RRC message includes one or more RRC parameters (information elements, higher layer parameters). For example, the RRC message may include a MIB.For example, the RRC message may include system information (SIB: SystemInformation Block, MIB). SIB is a generic name for various type of SIBs (e.g., SIB1,SIB2). For example, the RRC message may include a message which corresponds to aCCCH. For example, the RRC message may include a message which corresponds to aDCCH. RRC message is a general term for common RRC message and dedicated RRC message.

[0178] The BCCH in the logical channel may be mapped to the BCH or the DL-SCH in the transport channel. The CCCH in the logical channel may be mapped to the DL-SCH or the UL-SCH in the transport channel. The DCCH in the logical channel may be mapped to the DL-SCH or the UL-SCH in the transport channel.

[0179] The UL-SCH in the transport channel may be mapped to a PUSCH in the physical channel. The DL-SCH in the transport channel may be mapped to a PDSCH in the physical channel. The BCH in the transport channel may be mapped to a PBCH in the physical channel.

[0180] A higher-layer parameter is a parameter included in an RRC message or aMAC CE (MAC Control Element). The higher-layer parameter is a generic name of information included in a MIB, system information, a message which corresponds toCCCH, a message which corresponds to DCCH, and a MAC CE. A higher-layer parameter may be referred to as an RRC parameter or an RRC configuration if the higher- layer parameter is the parameter included in the RRC message.

[0181] A higher-layer parameter may be a cell-specific parameter or a UE-specific parameter. A cell-specific parameter is a parameter including a common configuration in a cell. A UE-specific parameter is a parameter including a configuration that may be configured differently for each UE.

[0182] The base station device may indicate change of cell-specific parameters by reconfiguration with random-access. The UE may change cell-specific parameters before triggering random-access. The base station device may indicate change of UE-specific parameters by reconfiguration with or without random-access. The UE may change UE- specific parameters before or after random-access.

[0183] The procedure performed by the terminal device 1 includes at least a part or all of the following 5A to 5C. The 5A is cell search. The 5B is random-access. The 5C is data communication.

[0184] The cell search is a procedure used by the terminal device 1 to synchronize with a cell in the time domain and / or the frequency domain and to detect a physical cellidentity. The terminal device 1 may detect the physical cell ID by performing synchronization of time domain and / or frequency domain with a cell by the cell search.

[0185] A sequence of a PSS is given based at least on a physical cell ID. A sequence of an SSS is given based at least on the physical cell ID.

[0186] An SS / PBCH block candidate indicates a resource for which transmission of the SS / PBCH block may exist. An SS / PBCH block may be transmitted at a resource indicated as the SS / PBCH block candidate. The base station device 3 may transmit anSS / PBCH block at an SS / PBCH block candidate. The terminal device 1 may receive(detect) the SS / PBCH block at the SS / PBCH block candidate.

[0187] A set of SS / PBCH block candidates in a half radio frame is also referred to as an SS-burst-set. The SS-burst-set is also referred to as a transmission window, a SS transmission window, or a DRS transmission window (Discovery Reference Signal transmission window). The SS-burst-set is a generic name that includes at least a first SS- burst-set and a second SS-burst-set.

[0188] The base station device 3 transmits SS / PBCH blocks of one or more indexes at a predetermined cycle. The terminal device 1 may detect an SS / PBCH block of at least one of the SS / PBCH blocks of the one or more indexes. The terminal device 1 may attempt to decode the PBCH included in the SS / PBCH block.

[0189] Data communication is a generic term for downlink communication and uplink communication and sidelink communication.

[0190] In data communication, the terminal device 1 attempts to detect a PDCCH(attempts to monitor a PDCCH, monitors a PDCCH, receives a PDCCFI). In a resource identified at least based on one or all of a control resource set and a search-space-set. It’s also called as “the terminal device 1 attempts to detect a PDCCH in a control resourceset”, “the terminal device 1 attempts to detect a PDCCH in a search-space-set”, “the terminal device 1 attempts to detect a PDCCH candidate in a control resource set”, “the terminal device 1 attempts to detect a PDCCH candidate in a search-space-set”, “the terminal device I attempts to detect a DCI format in a control resource set”, or “the terminal device 1 attempts to detect a DCI format in a search-space-set”. Monitoring aPDCCH may be equivalent as monitoring a DCI format in the PDCCH.

[0191] The control resource set is a set of resources configured by the number of resource blocks and a predetermined number of OFDM symbols in a slot.

[0192] The set of resources for the control resource set may be indicated by higher- layer parameters. The number of OFDM symbols included in the control resource set may be indicated by higher-layer parameters.

[0193] A PDCCH may be also called as a PDCCH candidate.

[0194] A search-space-set is defined as a set of PDCCH candidates. A search-space- set may be a Common Search Space (CSS) set or a UE-specific Search Space (USS) set.

[0195] In downlink communication, the terminal device 1 may detect a downlink DCI format. The detected downlink DCI format is at least used for resource assignment for aPDSCH. The detected downlink DCI format is also referred to as downlink assignment.The terminal device 1 attempts to receive the PDSCH. Based on a PUCCH resource indicated based on the detected downlink DCI format, an HARQ-ACK corresponding to the PDSCH (HARQ-ACK corresponding to a transport block included in the PDSCH) may be reported to the base station device 3.

[0196] In uplink communication, the terminal device 1 may detect an uplink DCI format. The detected uplink DCI format is at least used for resource assignment for aPUSCH. The detected uplink DCI format is also referred to as uplink grant. The terminal device 1 transmits the PUSCH.

[0197] PUSCH transmission(s) can be dynamically scheduled by an UL grant in aDCI, or the transmission can correspond to a configured grant Type 1 or Type 2. The configured grant Type 1 PUSCH transmission is semi-statically configured to operate upon the reception of higher layer parameter of configuredGrantConfig including rrc-ConfiguredUplinkGrant without the detection of an UL grant in a DCI. The configured grant Type 2 PUSCH transmission is semi-persistently scheduled by an UL grant in a valid activation DCI according to those procedure(s) after the reception of higher layer parameter configuredGrantConfig not including rrc-ConfiguredUplinkGrant. If configuredGrantConfigToAddModList is configured, more than one configured grant configuration of configured grant Type 1 and / or configured grant Type 2 may be active at the same time on an active BWP of a serving cell.

[0198] In sidelink communication, the terminal device 1 may detect (monitor, receive) an SCI format from another terminal device or the base station device 3. The detected SCI format is at least used for resource assignment for a PSSCH. The detectedSCI format is also referred to as sidelink grant. The terminal device 1 perform the sidelink(ST) transmission and / or SL reception.

[0199] Transmission of a PSCCH and transmission of a DMRS for the PSCCH may be indicated (or scheduled) by one DCI format. The PSCCH and the DMRS for thePSCCH may be collectively referred to as a PSCCH. Transmission of the PSCCH may be transmission of the PSCCH and the DMRS for the PSCCH.

[0200] A PSCCH may be estimated from a DMRS for the PSCCH. That is, propagation path of the PSCCH may be estimated from the DMRS for the PSCCH.

[0201] Transmission of a PSSCH and transmission of a DMRS for the PSSCH may be indicated (or scheduled) by one SCI format. The PSSCH and the DMRS for the PSSCH may be collectively referred to as a PSSCH. Transmission of the PSSCH may be transmission of the PSSCH and the DMRS for the PSCCH.

[0202] A PSSCH may be estimated from a DMRS for the PSSCH. That is, propagation path of the PSSCH may be estimated from the DMRS for the PSSCH.

[0203] A PSBCH may be estimated from a DMRS for the PSBCH. That is, propagation path of the PSBCH may be estimated from the DMRS for the PSBCH.

[0204] PSCCH indicates resource and other transmission parameters used by a UE for PSSCH. PSCCH transmission is associated with a DM-RS.

[0205] SCI carried on PSCCH is a 1st-stage SCI, which transports sidelink scheduling information.

[0206] SCI format 1-A is used for the scheduling of PSSCH and 2nd-stage-SCI onPSSCH.

[0207] The SCI format 1-A may include Priority field, Frequency resource assignment field, Time domain assignment field, Resource reservation period field,DMRS pattern field, 2nd-stage SCI format field, Beta_offset indicator field, Number ofDMRS port field, Modulation and coding scheme field, Additional MCS table indicator field, PSFCH overhead indication field, Reserved field, and / or Conflict information receiver flag field.

[0208] Here, the resource reservation may be to reserve a sidelink resource for an initial transmission of a transport block by an SCI associated with a different transport block, based on sensing and resource selection procedure. The resource reservation may be referred to as the reserved resource.

[0209] If the SCI format 1-A may include the priority field and the SL transmission is performed based on the operation with shared spectrum channel access, the values of the priority field may be associated with types of the channel access procedure and / or channel access priority class. The association may be indicated based on the first RRC parameter. The association may be determined based on the UE capability. The association may be determined based on the combination of configured channel access type and / or channel access priority class.

[0210] For operation with shared spectrum channel access, the SCI format 1-A may include a field indicating a type of the channel access procedure and / or channel access priority class.

[0211] For operation with shared spectrum channel access, the SCI format 1-A may include a field indicating COT sharing information or CO information. The COT sharing information or CO information may include at least information associated with remaining COT / CO duration which is an absolute time length in ms or in number of slots, and payload size. The remaining COT / CO duration may indicate shared slot(s) and / or starting time of the shared slot(s) within the COT / CO. In sidelink, the COT sharing may be COT shared between a UE (i.e., terminal device) and another UE (i.e., another terminal device). In downlink and uplink, the COT sharing may be COT shared between a UE (i.e., terminal device) and a gNB (i.e., base station device).

[0212] Figure 8 is an example of the table of the channel access priority class according to an aspect of the present embodiment. The channel access priority class may include the priority class and contention window size and channel occupancy time. The contention window size may indicate size of the sensing time prior to the transmission.The channel occupancy time may indicate the occupancy time after idle for the sensing.

[0213] The channel access type may indicate the type of the channel access procedure.

[0214] PSSCH transmits the TBs of data themselves, and control information forHARQ procedures and CSI feedback triggers, etc. At least 6 OFDM symbols within a slot are used for PSSCH transmission. PSSCH transmission is associated with a DM-RS and may be associated with a PT-RS. The SCI formats 2-A / 2-B / 2-C may be transmitted on the PSSCH.

[0215] SCI format 2-A is used for the decoding of PSSCH, with HARQ operation when HARQ-ACK information includes ACK or NACK, when HARQ-ACK information includes only NACK, or when there is no feedback of HARQ-ACK information.

[0216] SCI format 2-B is used for the decoding of PSSCH, with HARQ operation when HARQ-ACK information includes only NACK, or when there is no feedback ofHARQ-ACK information.

[0217] SCI format 2-C is used for the decoding of PSSCH and providing inter-UE coordination information or requesting inter-UE coordination information.

[0218] The SCI format 2-C may include one or more of HARQ process number field,New data indicator field, Redundancy version field, Source ID field, Destination ID field,HARQ feedback enabled / disabled indicator field, CSI request field andProviding / Requesting indicator field.

[0219] If HARQ feedback enabled / disabled indicator field is set to “enabled”, on aPSFCH occasion, the UE detecting the HARQ feedback enabled / disabled indicator field may perform PSFCH transmission with HARQ-ACK information in response to receivedPSSCH. And, on the PSFCH occasion, the UE transmitting the HARQ feedback enabled / disabled indicator field may expect to receive PSFCH with HARQ-ACK information in response to transmitted PSSCH.

[0220] If HARQ feedback enabled / disabled indicator field is set to “disabled”, the UE detecting the HARQ feedback enabled / disabled indicator field may not perform PSFCH transmission with HARQ-ACK information in response to received PSSCH on a PSFCH occasion. And, on the PSFCH occasion, the UE transmitting the HARQ feedback enabled / disabled indicator field may not expect to receive PSFCH with HARQ-ACK information in response to transmitted PSSCH.

[0221] PSFCH carries HARQ feedback over the sidelink from a UE which is an intended recipient of a PSSCH transmission to the UE which performed the transmission. PSFCH sequence is transmitted in one PRB repeated over two OFDM symbols near the end of the sidelink resource in a slot. The UE may transmit or receive one PSFCH in response to one PSSCH on one PSFCH occasion in time domain.

[0222] If a UE would transmit Nsch,Tx,PSFCHPSFCHs in a PSFCH transmission occasion, the UE first transmits PSFCHs with HARQ-ACK information from NTx,PSFCHPSFCHs corresponding to the smallest priority field values from the NTx PSFCHpriority field values, if any. Subsequently, the UE transmits remaining PSFCHs with conflict information corresponding to the smallest remaining priority field values from the NTx, PSFCHpriority field values, if any.

[0223] If a UE indicates a capability to receive NRx PSFCHPSFCHs in a PSFCH reception occasion, the UE first receives PSFCHs with HARQ-ACK information, if any, and subsequently receives PSFCHs with conflict information, if any.

[0224] The sidelink synchronization signal may comprise sidelink primary and sidelink secondary synchronization signals (S-PSS, S-SSS), each occupying 2 symbols and 127 subcarriers. PSBCH occupies 9 and 5 symbols for normal and extended CP cases respectively, including the associated DM-RS.

[0225] PSBCH may be used to transmit MIB for sidelink(MasterlnformationBlockSidelink)' as like the PBCH.

[0226] NR Radio Access operating with shared spectrum channel access can operate in different modes where either PCell, PSCell, or SCells can be in shared spectrum and an SCell may or may not be configured with uplink.

[0227] The gNB and / or UE(s) may operate in either dynamic or semi-static channel access mode. In both channel access modes, the gNB and / or UE(s) may apply Listen-Before-Talk (LBT) before performing a transmission on a cell configured with shared spectrum channel access (i.e., cell configured with operation with shared spectrum channel access). When LBT is applied, the transmitter listens to / senses the channel to determine whether the channel is free (i.e., idle, clear) or busy and performs transmission only if the channel is sensed free. For FR2-2, the gNB and / or UE(s) may operate only in dynamic channel access mode. This sensing may be referred to as clear channel assessment (CCA). The procedure associated with LBT may be included in the channel access procedure.

[0228] The shared spectrum channel access may be operated in shared spectrum and / or unlicensed spectrum.

[0229] The shared spectrum channel access may be operated in NR-unlicensed (NR-U) and / or sidelink-unlicensed (SL-U).

[0230] The shared spectrum channel access may include one or more procedures.

[0231] A UE can access a channel on which UL and / or SL transmission(s) are performed according to one of Type 1 or Type 2 channel access procedures.

[0232] A UE may transmit the transmission using Type 1 channel access procedure after first sensing the channel to be idle during the slot durations of a defer duration Td,and after the counter N is zero in step 4. The counter N is adjusted by sensing the channel for additional slot duration(s) according to the steps described below.

[0233] Step 1 : the UE sets N = Ninit, where Ninitis a random number uniformly distributed between 0 and CWp, and go to step 4.

[0234] Step 2: if N > 0 and the UE chooses to decrement the counter, set N = N — 1.

[0235] Step 3: the UE senses the channel for an additional slot duration, and if the additional slot duration is idle, go to step 4; else, go to step 5.

[0236] Step 4: if N = 0, stop; else, go to step 2.

[0237] Step 5 : the UE senses the channel until either a busy slot is detected within an additional defer duration Tdor all the slots of the additional defer duration Tdare detected to be idle.

[0238] Step 6: if the channel is sensed to be idle during all the slot durations of the additional defer duration Td, go to step 4; else, go to step 5.

[0239] If a UE has not transmitted a UL or SL transmission on a channel on which UL or SL transmission(s) are performed after step 4 in the procedure above, the UE may transmit a transmission on the channel, if the channel is sensed to be idle at least in a sensing slot duration Tslwhen the UE is ready to transmit the transmission and if the channel has been sensed to be idle during all the slot durations of a defer duration Tdimmediately before the transmission. If the channel has not been sensed to be idle in a sensing slot duration Tslwhen the UE first senses the channel after it is ready to transmit, or if the channel has not been sensed to be idle during any of the sensing slot durations of a defer duration Tdimmediately before the intended transmission, the UE proceeds to step 1 after sensing the channel to be idle during the slot durations of a defer duration Td.

[0240] The defer duration Tdconsists of duration Tf= 16us immediately followed by mpconsecutive slot durations where each slot duration is Tsl= 9μs, and Tfincludes an idle slot duration Tslat start of Tf.

[0241] CWmin,p≤ CWp≤ CWmax, pis the contention window. CWmin,pand CWmax,pare chosen before step 1 of the procedure above.

[0242] mp, CWmin,p, and CWmax,pare based on a channel access priority class p.

[0243] In some embodiments, Type 2 channel access procedure is a channel access procedure by UE where the time duration spanned by the sensing slots that are sensed to be idle before a UL or SL transmission(s) is deterministic.

[0244] Type 2A channel access procedure may be applicable to the following transmission(s) performed by a UE. If a UE intends to transmit a SL transmission at least 25μs after a SL transmission by another UE in a shared channel occupancy, the UE may use Type 2A channel access procedures for the SL transmission. If a UE intends to transmit only S-SSB in transmission(s) where the time duration of S-SSB transmission(s) is at most 1ms with a duty cycle of at most 1 / 20, the UE may use Type 2A channel access procedures for the SLtransmission(s).

[0245] Type 2 channel access procedure may include one or more of Type 2A / 2B / 2C channel access procedures.

[0246] If a UE is indicated to perform Type 2A channel access procedures, the UE uses Type 2A channel access procedures for a UL or SL transmission. The UE may transmit the transmission immediately after sensing the channel to be idle for at least a sensing interval Tshort_ ul= 25p.s . Tshort_ ulconsists of a duration Tf= 16μs immediately followed by one sensing slot and Tfincludes a sensing slot at start of Tf.The channel is considered to be idle for Tshort _ulif both sensing slots of Tshort _ul.are sensed to be idle.

[0247] If a UE is indicated to perform Type 2B channel access procedures, the UE uses Type 2B channel access procedure for a UL or SL transmission. The UE may transmit the transmission immediately after sensing the channel to be idle within a duration of Tf= 16μs . Tfincludes a sensing slot that occurs within the last 9μs of Tf. The channel is considered to be idle within the duration Tfif the channel is sensed to be idle for total of at least 5μs with at least 4μs of sensing occurring in the sensing slot.

[0248] If a UE is indicated to perform Type 2C channel access procedures for a UL or SL transmission, the UE does not sense the channel before the transmission. The duration of the corresponding UL or SL transmission is at most a certain value. The certain value may be 584μs. The certain value may be other value than 584μs.

[0249] Type 2B or Type 2C channel access procedure respectively, may be applicable to the transmission(s) performed by a UE following transmission(s) by a UE after a gap of 16μs or up to 16μs, respectively, in a shared channel occupancy.

[0250] UL transmission may include any of the PSCCH, the PSCCH , the PRACH the PT-RS and the SRS.

[0251] SL transmission may include any of the PSCCH, the PSSCH, the PSFCH, the PSBCH, the PT-RS and the S-PSS / S-SSS / CSI-RS.

[0252] A channel refers to a carrier or a part of a carrier comprising a contiguous set of resource blocks (RBs) on which a channel access procedure is performed in shared spectrum.

[0253] A channel access procedure is a procedure based on sensing that evaluates the availability of a channel for performing transmissions. The basic unit for sensing is asensing slot with a duration Tsl= 9μs. The sensing slot duration Tslis considered to be idle if an eNB / gNB or a UE senses the channel during the sensing slot duration, and determines that the detected power for at least 4μs within the sensing slot duration is less than energy detection threshold XThresh. Otherwise, the sensing slot duration Tslis considered to be busy.

[0254] When the UE uses Type 1 channel access procedures for PSFCH transmissions, the UE may use SL channel access priority class p = 1 irrespective of priorities for one or more received PSSCH.

[0255] A channel occupancy (CO) refers to transmission(s) on channel(s) by eNB / gNB / UE(s) after performing the corresponding channel access procedures.

[0256] A Channel Occupancy Time (COT) refers to the total time for which eNB / gNB / UE and any eNB / gNB / UE(s) sharing the channel occupancy perform transmission(s) on a channel after an eNB / gNB / UE performs the corresponding channel access procedures. For determining a Channel Occupancy Time, if a transmission gap is less than or equal to 25μs, the gap duration is counted in the channel occupancy time. A channel occupancy time can be shared for transmission between an eNB / gNB and the corresponding UE(s). A channel occupancy time can be shared for the SL transmission between a UE and another UE(s). This shared COT between the UE and another UE(s) may be referred to as UE-to-UE (UE-UE) COT sharing.

[0257] A DL transmission burst is defined as a set of transmissions from an eNB / gNB without any gaps greater than 16μs. Transmissions from an eNB / gNB separated by a gap of more than 16μs are considered as separate DL transmission bursts. An eNB / gNB can transmit transmission(s) after a gap within a DL transmission burst without sensing the corresponding channel(s) for availability.

[0258] A UL transmission burst is defined as a set of transmissions from a UE without any gaps greater than 16μs. Transmissions from a UE separated by a gap of more than16μs are considered as separate UL transmission bursts. A UE can transmit transmission(s) after a gap within a UL transmission burst without sensing the corresponding channel(s) for availability.

[0259] A SL transmission burst is defined as a set of SL transmissions from a UE without any gaps greater than 16μs. The SL transmissions from a UE separated by a gap of more than 16μs are considered as separate SL transmission bursts. A UE can transmitSL transmission(s) after a gap within a SL transmission burst without sensing the corresponding channel(s) for availability.

[0260] The NG-RAN architecture supports the PC5 interface. SL transmission and reception over the PCS interface are supported when the UE is inside NG-RAN coverage, irrespective of which RRC state the UE is in, and when the UE is outside NG-RAN coverage.

[0261] NR sidelink communication can support one of three types of transmission modes for a pair of a Source Layer- 2 ID and a Destination Layer-2 ID in the AS: Unicast transmission is characterized by Support of one PC5-RRC connection between peer UEs for the pair; Transmission and reception of control information and user traffic between peer UEs in sidelink; Support of sidelink HARQ feedback; Support of sidelink transmit power control; Support of RLC AM; and Detection of radio link failure for the PC5-RRC connection. Groupcast transmission is characterized by Transmission and reception of user traffic among UEs belonging to a group in sidelink; and Support of sidelink HARQ feedback. Broadcast transmission is characterized by Transmission and reception of user traffic among UEs in sidelink.

[0262] The access stratum (AS) protocol stack for the control plane for SCCH forRRC in the PCS interface may comprise RRC, PDCP, RLC and MAC sublayers, and the physical layer.

[0263] For support of PC5-S protocol, PC5-S is located on top of PDCP, RLC andMAC sublayers, and the physical layer in the control plane protocol stack for SCCH forPC5-S.

[0264] The AS protocol stack for SBCCH in the PC5 interface may comprise RRC,RLC, MAC sublayers, and the physical layer.

[0265] The AS protocol stack for user plane in the PC5 interface may comprise SDAP,PDCP, RLC and MAC sublayers, and the physical layer.

[0266] Sidelink Radio bearers (SLRBs) are categorized into two groups: sidelink data radio bearers (SL DRB) for user plane data and sidelink signalling radio bearers (SL SRB) for control plane data. Separate SL SRBs using different SCCHs are configured for PC5-RRC and PC5-S signalling respectively.

[0267] Sidelink control channel (SCCH), sidelink traffic channel (STCH) and sidelink broadcast control channel (SBCCH) are logical channels used in sidelink.

[0268] SCCH may be a sidelink channel for transmitting control information (i.e.PC5-RRC and PC5-S messages) and NR sidelink discovery messages from one UE to other / another UE(s).

[0269] STCH may be a sidelink channel for transmitting user information from oneUE to other / another UE(s).

[0270] SBCCH may be a sidelink channel for broadcasting sidelink system information from one UE to other / another UE(s).

[0271] The RRC sublayer provides the following services and functions over the PCS interface: Transfer of a PC5-RRC message between peer UEs; Maintenance and release of a PC5-RRC connection between two UEs; and Detection of sidelink radio link failure for a PC5-RRC connection.

[0272] A PC5-RRC connection is a logical connection between two UEs for a pair ofSource and Destination Layer-2 IDs which is considered to be established after a corresponding PC5 unicast link is established. There is one-to-one correspondence between the PC5-RRC connection and the PC5 unicast link. A UE may have multiplePC5-RRC connections with one or more UEs for different pairs of Source and DestinationLayer- 2 IDs.

[0273] Separate PC5-RRC procedures and messages are used for a UE to transfer UE capability and sidelink configuration to the peer UE. Both peer UEs can exchange their own UE capability and sidelink configuration using separate bi-directional procedures in both sidelink directions.

[0274] If it is not interested in sidelink transmission, if sidelink RLF on the PC5-RRC connection is declared, or if the Layer-2 link release procedure is completed, the UE releases the PC5-RRC connection.

[0275] For operation with shared spectrum channel access, if transmission pause and / or reception pause occur within the channel occupancy and / or channel occupancy time for the UE, the channel occupancy and / or channel occupancy time for the UE may be difficult to maintain for the purpose of the multiple consecutive slots transmissions(MCSt) and / or the UE-to-UE (UE-UE) COT sharing. Here, the multiple consecutive slots transmissions may be a transmission over / using multiple consecutive slots for single TB, single TB repetition or multiple TBs.

[0276] For operation with shared spectrum channel access, the PSFCH may be transmitted using the dedicated resource(s) for the UE and the common resource(s) between the UE and the one or more another UEs. Here, the dedicated resource(s) may be determined based on the PSSCH-PSFCH mapping. Therefore, the UE may identify mapping of the dedicated resource(s) for the PSFCH corresponding to receivedPSCCH / PSSCH resource(s).

[0277] The UE may not transmit or receive any signal(s) on time domain with transmission pause(s) or reception pause(s) as the unused PSFCH occasion(s) unless one or more conditions are fulfilled. In this case, the time domain with transmission pause(s) and / or a reception pause(s) are referred to as a gap, respectively. Therefore, if the transmission pause or reception pause occurs within CO or COT, the CO or COT may not be maintained on time domain after transmission pause or reception pause.

[0278] If CO / COT initiated by the UE includes one or more transmission pauses or reception pauses, the UE may transmit dummy signals overlapping with time domain with the transmission pauses or the reception pauses based on a capability of the UE.

[0279] If contiguous SL transmission (i.e., SL transmission burst) include one or more transmission pauses within a CO, the UE may transmit a dummy signal in time domain with the transmission pause between / among two or more consecutive SL transmissions.

[0280] For operation with shared spectrum channel access in frequency range 1, for the first SL transmission with PSSCH / PSCCH by a UE to initiate a channel occupancy for a slot, if no a resource reservation is transmitted or detected for the slot and the RB set(s) of the intended PSCCH / PSSCH transmission, and if UE is configured with multipleCPE starting positions provided by RRC parameter CPEStartingPositionsPSCCH-PSSCH-InitiateCOT, the UE determines a duration (i.e., starting position) of a cyclicprefix extension Textto be applied according to OFDM baseband signal generation procedure for the PSCCH / PSSCH where the index for Δiis chosen randomly from a set of values configured per priority (e.g., LI priority) of the PSCCH / PSSCH by the RRC parameter CPEStartingPositionsPSCCH-PSSCH-InitiateCOT. Otherwise, the UE uses a configured default cyclic prefix extension Textindicated by the RRC parameter DefaultCPEStartingPositionsPSCCH-PSSCH-InitiateCOT. Here, the priority may be the LI priority. Or the priority may be the channel access priority class (CAPC).

[0281] Here, in some embodiments, the frequency range may be the frequency range of NR operating band in which NR can operate. The frequency range 1 (FR1) may a frequency range corresponding to 410 - 7125 MHz. The frequency range 2 (FR2) may include FR2-1 and FR2-2. The FR2-1 may be a frequency range corresponding to 24250 - 52600 MHz. The FR2-2 may be a frequency range corresponding to 52600 - 71000 MHz.

[0282] For operation with shared spectrum channel access in frequency range 1, for the first SL transmission with PSSCH / PSCCH by a UE to initiate a channel occupancy for multiple consecutive slots (or a first slot within the multiple consecutive slots), if no a resource reservation is transmitted or detected for the multiple consecutive slots and the RB set(s) of the intended PSCCH / PSSCH transmissions for the multiple consecutive slots, and if UE is configured with multiple CPE starting positions provided by RRC parameter CPEStartingPositionsPSCCH-PSSCH-InitiateCOT, the UE may determine a duration of a cyclic prefix extension Textto be applied according to OFDM baseband signal generation procedure for the PSCCH / PSSCH where the index for Δiis chosen randomly from a set of values configured per priority of the PSCCH / PSSCH by the RRC parameter CPEStartingPositionsPSCCH-PSSCH-InitiateCOT. Additionally or alternatively, in this case and if the multiple consecutive slots carry single transport block, the UE determinesa duration of a cyclic prefix extension Text to be applied according to OFDM baseband signal generation procedure for the PSCCH / PSSCH where the index for is chosen randomly from a set of values configured per priority of the PSCCH / PSSCH by the RRC parameter CPEStartingPositionsPSCCH-PSSCH-InitiateCOT. Additionally or alternatively, in this case and if the multiple consecutive slots carry multiple transport blocks with different priority values, the UE determines a duration of a cyclic prefix extension Text to be applied according to OFDM baseband signal generation procedure for the PSCCH / PSSCH where the index for is chosen randomly from a set of values configured for a certain priority of the one or more PSCCHs / PSSCHs by the RRC parameter CPEStartingPositionsPSCCH-PSSCH-InitiateCOT. Otherwise, the UE may use a configured default cyclic prefix extension Textindicated by the RRC parameterDefaultCPEStartingPositionsPSCCH-PSSCH-InitiateCOT. The RRC parameterDefaultCPEStartingPositionsPSCCH-PSSCH-InitiateCOT may indicate default value(s) for cyclic prefix extension. The RRC parameter DefaultCPEStartingPositionsPSCCH-PSSCH-InitiateCOT may indicate default value(s) for cyclic prefix extension per the priority. If multiple default values (e.g., multiple indexes i) are provided in the RRC parameter DefaultCPEStartingPositionsPSCCH-PSSCH-InitiateCOT, the UE may choose randomly from a set of the multiple default values. Here, a value of the certain priority may be the highest L1 priority among the one or more PSCCHs / PSSCHs (i.e., one or more different transport blocks). Or a value of the certain priority may be the lowest L1 priority among the one or more PSCCHs / PSSCHs. Or a value of the certain priority may be a certain L1 priority.

[0283] Here, in some embodiments, a PSCCH / PSSCH may be considered to a transport block.

[0284] Here, in some embodiments, the UE may perform Type 1 channel access procedure to initiate a COT immediately preceding the SL transmission(s).

[0285] Figure 9 is an example of the table of the variables CiandΔifor sidelink cyclic prefix extension according to an aspect of the present embodiment. The variable Ciindicates the number of symbols before the starting symbol of the PSCCH / PSSCH or PSFCH. The variable Δiindicates the duration or starting position of cyclic prefix extension within the symbols before the starting symbol of the PSCCH / PSSCH or PSFCH. The variables Ciand Δimay be given by the index i. The index i may be provided by an RRC parameter. The RRC parameter may be CPEStartingPositionsPSCCH-PSSCH- InitiateCOT, The RRC parameter may be DefaultCPEStartingPositionsPSCCH-PSSCH- InitiateCOT. The RRC parameter may be CPEStartingPositionsPSCCH-PSSCH- SharedCOT. The RRC parameter may be DefaultCPEStartingPositionsPSCCH-PSSCH- SharedCOT.

[0286] For operation with shared spectrum channel access in frequency range 1, for the first SL transmission with PSSCH / PSCCH by a UE within a channel occupancy, the UE transmitting in the channel occupancy determines the duration of a cyclic prefix extension Text according to the RRC parameter DefaultCPEStartingPositionsPSCCH- PSSCH-SharedCOT, unless the UE is configured with multiple CPE starting positions for transmitting within a shared channel occupancy by the RRC parameter CPEStartingPositionsPSCCH-PSSCH-SharedCOT, in which case the UE determines the duration of a cyclic prefix extension Textto be applied according to OFDM baseband signal generation procedure for the PSCCH / PSSCH where the index for Δiis chosen randomly from a set of values configured per priority of the PSCCH / PSSCH by the RRC parameter CPEStartingPositionsPSCCH-PSSCH-SharedCOT, if no a resourcereservation is transmitted or detected for the slot and the RB set(s) of the intendedPSCCH / PSSCH transmission, otherwise, the UE uses the configured default cyclic prefix extension Text indicated by the RRC parameter DefaultCPEStartingPositionsPSCCH-PSSCH-SharedCOT.

[0287] For operation with shared spectrum channel access in frequency range 1, for the SL transmissions with one or more PSSCHs / PSCCHs by a UE for the multiple consecutive slots within a channel occupancy, the UE transmitting in the channel occupancy may determine the duration of a cyclic prefix extension Textaccording to theRRC parameter DefaultCPEStartingPositionsPSCCH-PSSCH-SharedCOT, unless theUE is configured with multiple CPE starting positions for transmitting within a shared channel occupancy by the RRC parameter CPEStartingPositionsPSCCH-PSSCH-SharedCOT, in which case the UE may determine the duration of a cyclic prefix extensionText to be applied according to OFDM baseband signal generation procedure for thePSCCH / PSSCH where the index for Δimay be chosen randomly from a set of values configured for a certain priority of the one or more PSCCHs / PSSCHs by the RRC parameter CPEStartingPositionsPSCCH-PSSCH-SharedCOT, if the multiple consecutive slots carry multiple transport blocks with different priority values and if no a resource reservation is transmitted or detected for the slot and the RB set(s) of the intended PSCCH / PSSCH transmissions, otherwise, the UE uses the configured default cyclic prefix extension Text. indicated by the RRC parameterDefaultCPEStartingPositionsPSCCH-PSSCH-SharedCOT. Here, the certain priority may be the highest LI priority among the multiple transport blocks. Or the certain priority may be the lowest LI priority among the multiple transport blocks. Or the certain priority may be a certain LI priority among the multiple transport blocks. Or the certain priority maybe a certain L1 priority regardless of the multiple transport blocks. Or the certain priority may be the same L1 priority as the L1 priority applied to the RRC parameterCPEStartingPositionsPSCCH-PSSCH-InitiateCOT for the multiple transport blocks. Or the certain priority may be the same LI priority as the L1 priority applied to the RRC parameter DefaultCPEStartingPositionsPSCCH-PSSCH-InitiateCOT for the multiple transport blocks. Or the certain priority may be the highest L1 priority among one or multiple remaining transport blocks except the initiated transport block. Or the certain priority may be the lowest LI priority among one or multiple remaining transport blocks except the initiated transport block.

[0288] For operation with shared spectrum channel access in frequency range 1, for the SL transmissions with PSSCH / PSCCH by a UE for the multiple consecutive slots within a channel occupancy, the UE transmitting in the channel occupancy may determine the duration of a cyclic prefix extension Textaccording to the RRC parameterDefaultCPEStartingPositionsPSCCH-PSSCH-SharedCOT, unless the UE is configured with multiple CPE starting positions for transmitting within a shared channel occupancy by the RRC parameter CPEStartingPositionsPSCCH-PSSCH-SharedCOT, in which case the UE may determine the duration of a cyclic prefix extension Textto be applied according to OFDM baseband signal generation procedure where the lowest index (e.g., i = 0) for Δimay be chosen from a set of values configured for a certain priority of the one or more PSCCHs / PSSCHs by the RRC parameter CPEStartingPositionsPSCCH-PSSCH-SharedCOT, if the multiple consecutive slots carry multiple transport blocks with different priority values and if no a resource reservation is transmitted or detected for the slot and the RB set(s) of the intended PSCCH / PSSCH transmissions, otherwise, the UEuses the configured default cyclic prefix extension Text indicated by the RRC parameterDefaultCPEStartingPositionsPSCCH-PSSCH-SharedCOT.

[0289] Additionally or alternatively, if the UE performs multiple consecutive slots transmission carrying multiple TBs, a priority applied for each of the RRC parameterCPEStartingPositionsPSCCH-PSSCH-InitiateCOT and the RRC parameterDefaultCPEStartingPositionsPSCCH-PSSCH-SharedCOT may be same priority. In other words, a priority applied for the RRC parameter DefaultCPEStartingPositionsPSCCH-PSSCH-SharedCOT may be same as a priority applied for the RRC parameterCPEStartingPositionsPSCCH-PSSCH-InitiateCOT

[0290] For operation with shared spectrum channel access in frequency range 1, for the SL transmissions with PSCCH / PSSCH by a UE for the multiple consecutive slots within a channel occupancy, the UE transmitting in the channel occupancy may be performed without the duration of a cyclic prefix extension Text according to the RRC parameters DefaultCPEStartingPositionsPSCCH-PSSCH-SharedCOT and / orCPEStartingPositionsPSCCH-PSSCH-SharedCOT. In this case, the SL transmissions with multiple PSCCH / PSSCHs by the UE without the duration of a cyclic prefix extension may be performed if the SL transmissions over multiple consecutive slots carry the multiple transport blocks.

[0291] In other words, for operation with shared spectrum channel access in frequency range 1 , if the UE performs the SL transmissions over the multiple consecutive slots for PSCCH / PSSCH carrying multiple TBs within a channel occupancy, the SL transmission(s) without the corresponding CPE for each TB may be performed.

[0292] Here, in some embodiments, the UE may perform Type 2 channel access procedure immediately preceding the SL transmission(s) to perform or resume the SL transmission(s) within a COT.

[0293] Here, in some embodiments, PSSCH may consider to be PSCCH / PSSCH.

[0294] Each of a program running on the base station device and the terminal device according to an aspect of the present invention may be a program that controls a CentralProcessing Unit (CPU) and the like, such that the program causes a computer to operate in such a manner as to realize the functions of the above-described embodiment according to the present invention. The information handled in these devices is transitorily stored in a Random-Access-Memory (RAM) while being processed. Thereafter, the information is stored in various types of Read-Only-Memory (ROM) such as a Flash ROM and a Hard-Disk-Drive (HDD), and when necessary, is read by the CPU to be modified or rewritten.

[0295] Note that the terminal device 1 and the base station device 3 according to the above-described embodiment may be partially achieved by a computer. In this case, this configuration may be realized by recording a program for realizing such control functions on a computer-readable recording medium and causing a computer system to read the program recorded on the recording medium for execution.

[0296] Note that it is assumed that the "computer system" mentioned here refers to a computer system built into the terminal device 1 or the base station device 3, and the computer system includes an OS and hardware components such as a peripheral device.Furthermore, the "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, and the like, and a storage device built into the computer system such as a hard disk.

[0297] Moreover, the "computer-readable recording medium" may include a medium that dynamically retains a program for a short period of time, such as a communication line that is used to transmit the program over a network such as the Internet or over a communication line such as a telephone line, and may also include a medium that retains a program for a fixed period of time, such as a volatile memory within the computer system for functioning as a server or a client in such a case. Furthermore, the program may be configured to realize some of the functions described above, and also may be configured to be capable of realizing the functions described above in combination with a program already recorded in the computer system.

[0298] Furthermore, the base station device 3 according to the above-described embodiment may be achieved as an aggregation (an device group) including multiple devices. Each of the devices configuring such an device group may include some or all of the functions or the functional blocks of the base station device 3 according to the above-described embodiment. The device group may include each general function or each functional block of the base station device 3. Furthermore, the terminal device 1 according to the above-described embodiment can also communicate with the base station device as the aggregation.

[0299] Furthermore, the base station device 3 according to the above-described embodiment may serve as an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and / or NG-RAN (Next Gen RAN, NR-RAN). Furthermore, the base station device 3 according to the above-described embodiment may have some or all of the functions of a node higher than an eNodeB or the gNB.

[0300] Furthermore, some or all portions of each of the terminal device 1 and the base station device 3 according to the above-described embodiment may be typically achievedas an LSI which is an integrated circuit or may be achieved as a chip set. The functional blocks of each of the terminal device 1 and the base station device 3 may be individually achieved as a chip, or some or all of the functional blocks may be integrated into a chip.Furthermore, a circuit integration technique is not limited to the LSI, and may be realized with a dedicated circuit or a general-purpose processor. Furthermore, in a case that with advances in semiconductor technology, a circuit integration technology with which anLSI is replaced appears, it is also possible to use an integrated circuit based on the technology.

[0301] Furthermore, according to the above-described embodiment, the terminal device has been described as an example of a communication device, but the present invention is not limited to such a terminal device, and is applicable to a terminal device or a communication device of a fixed-type or a stationary-type electronic device installed indoors or outdoors, for example, such as an Audio-Video (AV) device, a kitchen device, a cleaning or washing machine, an air-conditioning device, office equipment, a vending machine, and other household devices.

[0302] The embodiments of the present invention have been described in detail above referring to the drawings, but the specific configuration is not limited to the embodiments and includes, for example, an amendment to a design that falls within the scope that does not depart from the gist of the present invention. Furthermore, various modifications are possible within the scope of one aspect of the present invention defined by claims, and embodiments that are made by suitably combining technical means disclosed according to the different embodiments are also included in the technical scope of the present invention. Furthermore, a configuration in which constituent elements, described in therespective embodiments and having mutually the same effects, are substituted for one another is also included in the technical scope of the present invention.

Claims

[CLAIMS]1. A user equipment (UE) comprising: reception circuitry configured to receive a first RRC parameter and a secondRRC parameter; and transmission circuitry configured to perform multiple consecutive slots transmission (MCSt) carrying multiple transport blocks using type 1 channel access procedure; wherein the transmission circuitry is configured to apply CPE starting position based on the first RRC parameter for a first sidelink transmission within theMCSt, if L1 priorities of the multiple transport blocks include different values, a value of the first RRC parameter is determined based on the highest L1 priority among the L1 priorities of the multiple transport blocks, and the transmission circuitry is configured to apply CPE starting position based on the second RRC parameter for one or more sidelink transmissions following the first sidelink transmission within the MCSt, a value of the second RRC parameter is determined based on the same L1 priority asL1 priority used for the first RRC parameter.

2. A method for a user equipment (UE) comprising: receiving a first RRC parameter and a second RRC parameter; performing multiple consecutive slots transmission (MCSt) carrying multiple transport blocks using type 1 channel access procedure;applying CPE starting position based on the first RRC parameter for a first sidelink transmission within the MCSt; determining a value of the first RRC parameter based on the highest LI priority among the LI priorities of the multiple transport blocks if LI priorities of the multiple transport blocks include different values; applying CPE starting position based on the second RRC parameter for one or more sidelink transmissions following the first sidelink transmission within the MCSt; and determining a value of the second RRC parameter based on the same LI priority as LI priority used for the first RRC parameter.

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