Base station equipment and terminal equipment

Abstract

To communicate efficiently. [Solution] A base station device that communicates with a terminal device, comprising: a higher layer processing unit that sets first information; and a wireless transmission unit that transmits the first information to the terminal device, wherein the first information is a subset of a plurality of parameter sets for setting SL-PRS, the number of the first information is less than or equal to the number that can be notified in a field for notifying the setting of the SL-PRS in DCI format and / or SCI format, and the SL-PRS is a reference signal transmitted from the terminal device to another terminal device.

Description

[Technical Field]

[0001] This invention relates to base station equipment and terminal equipment. [Background technology]

[0002] The wireless access methods and wireless networks for cellular mobile communications (for example, "NR (New Radio)", "LTE (Long Term Evolution)", or "EUTRA (Evolved Universal Terrestrial Radio Access)", or their successors) are part of the Third Generation Partnership Project (3GPP:3 rd This is being considered in the Generation Partnership Project. In NR and LTE, base station equipment may be called gNodeB (next generation NodeB) or eNodeB (evolved NodeB), and terminal equipment may be called UE (User Equipment). NR and LTE are base stations This is a cellular communication system in which multiple devices are arranged in a cell-like structure to cover different areas. A single base station device may manage one or more serving cells.

[0003] 3GPP is proposing next-generation wireless communication to the International Mobile Telecommunication (IMT)-2020 standard, which is being developed by the International Telecommunication Union (ITU). The NR standard is under consideration (Non-Patent Document 1). NR is required to satisfy the requirements of three scenarios—eMBB (enhanced Mobile Broadband), mMTC (massive Machine Type Communication), and URLLC (Ultra Reliable and Low Latency Communication)—within a single technological framework. [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] "New SID proposal: Study on New Radio Access Technology", RP-160671, NTT DOCOMO, 3GPP TSG RAN Meeting #71, Goteborg, Sweden, 7th - 10th March, 2016. [Overview of the project] [Problems that the invention aims to solve]

[0005] The present invention provides a terminal device, a base station device, and a communication method used in the terminal device or the base station device for efficient communication. [Means for solving the problem]

[0006] (1) A first aspect of this embodiment of the present invention is a base station device that communicates with a terminal device, comprising: an upper layer processing unit that sets first information; and a wireless transmission unit that transmits the first information to the terminal device, wherein the first information is a partial set of parameters from a plurality of parameter sets for setting SL-PRS, and the first information is in DCI format and / or This is less than or equal to the number of fields that can be notified in the field for notifying the SL-PRS settings in SCI format. The SL-PRS is a reference signal transmitted from one terminal device to another.

[0007] (2) A base station device according to a first embodiment of this invention, wherein one piece of information is selected from the first piece of information as second information, and the second piece of information is included in the DCI format. Then, transmit to the terminal device.

[0008] (3) A base station device according to a first embodiment of this invention, wherein the parameter set is a part or all of the number of SL-PRS symbols, the symbol offset of the SL-PRS, the comb size, and the resource element offset.

[0009] (4) A second aspect of this embodiment of the present invention is a terminal device that communicates with another terminal device, comprising a wireless receiving unit that receives DCI and a wireless receiving unit that transmits third information and SL-PRS to the other terminal device. The system comprises a line transmission unit, wherein the third information is a set of parameters for setting the SL-PRS, and if there is a PC5 connection with the other terminal device, the third information is the information indicated by DCI, and if there is no PC5 connection with the other terminal device, the third information is the This is information that has been pre-configured on the terminal device.

[0010] (5) A third aspect of this embodiment of the present invention is a terminal device that communicates with another terminal device, comprising a wireless receiving unit that receives third information and SL-PRS from the other terminal device, wherein the third information is a set of parameters for setting the SL-PRS, and if there is a PC5 connection with the other terminal device, the third information is information indicated by DCI, and if there is no PC5 connection with the other terminal device, the third information is a set that is pre-configured in the terminal device It is information. [Effects of the Invention]

[0011] According to this invention, terminal devices can communicate efficiently. Furthermore, base station devices can communicate efficiently. [Brief explanation of the drawing]

[0012] [Figure 1] This is a conceptual diagram of a wireless communication system according to one aspect of this embodiment. [Figure 2] This is an example illustrating the relationship between Nslot symb, SCS setting μ, and CP setting according to one aspect of this embodiment. [Figure 3] This figure shows an example of a method for setting up a resource grid according to one aspect of this embodiment. [Figure 4] This figure shows an example of resource grid configuration according to one aspect of this embodiment. [Figure 5] This is a schematic block diagram showing the configuration of a terminal device 1 according to one aspect of this embodiment. [Figure 6] This is a schematic block diagram showing the configuration of a base station device 3 according to one aspect of this embodiment. [Figure 7] This figure shows an example of the SS / PBCH block configuration according to one aspect of this embodiment. [Figure 8] This figure shows an example of a monitoring opportunity for a search space set according to one aspect of this embodiment. [Figure 9] This diagram shows the procedure for resetting the side link RRC according to one aspect of this embodiment. [Figure 10] This figure shows an example of an SL-PRS setting table according to one aspect of this embodiment. [Figure 11] This figure shows an example of a setting method for setting multiple SL-PRS setting information in a base station device according to one aspect of this embodiment. [Figure 12] This figure shows an example of a setting method for setting one SL-PRS setting in a base station device according to one aspect of this embodiment. [Figure 13] This figure shows an example of a setting method for setting multiple SL-PRS setting information in a terminal device according to one aspect of this embodiment. [Figure 14] This figure shows an example of a setting method for setting one SL-PRS setting in a terminal device according to one aspect of this embodiment. [Modes for carrying out the invention]

[0013] Embodiments of the present invention will be described below. Note that floor(CX) is the floor for the real number CX. It can also be a function. For example, floor(CX) is the largest real number within the range that does not exceed CX. It may also be a function that provides an integer. ceil(CX) may also be a ceiling function for a real number CX. For example, ceil(CX) may be a function that provides the smallest integer not less than a real number CX. mod(EX,FX) may also be a function that provides the remainder obtained by dividing EX by FX. mod(EX,FX) corresponds to the remainder of division of EX by FX. It may also be a function that provides a value. exp(GX) = e^GX, where e is Napier's constant. Yes, (HX)^(IX) represents HX raised to the power of IX.

[0014] "A, and / or B" may be a term that includes "A", "B", or "A and B".

[0015] A parameter or piece of information may have one or more values, meaning that the parameter or information may include at least one parameter or piece of information that has those one or more values. A top-level parameter may be a single top-level parameter. A top-level parameter may be an information element (IE) that includes multiple parameters.

[0016] Figure 1 is a conceptual diagram of a wireless communication system according to one aspect of this embodiment. In Figure 1, the wireless communication system comprises terminal devices 1A to 1D and a base station device 3 (gNB). Below, terminal devices 1A to 1D may also be referred to as terminal device 1(UE).

[0017] In Figure 1, terminal devices 1A and 1B are within the coverage of base station device 3. Within the coverage of base station device 3, terminal device 1 may be connected to base station device 3. The link from terminal device 1 to base station device 3 is called an uplink (UL), and the base station The link from station equipment 3 to terminal equipment 1 is called a downlink (DL). The downlink and downlink may be connected via a Uu interface. Terminal devices 1C and 1D are outside the coverage of base station device 3.

[0018] In Figure 1, sidelink communication may be performed between terminal devices. Sidelink communication is communication between terminal devices using wireless network technology without going through network nodes. A sidelink is a wireless link between terminal devices when performing sidelink communication. Sidelink is a PC5 interface They may be connected via a sidelink. Furthermore, the terminal devices performing sidelink communication are not limited to two devices, but may include three or more devices.

[0019] Positioning is the process of measuring the position of a terminal device. Sidelink positioning is the process of performing positioning using sidelink communication. Sidelink positioning can be applied to use cases such as V2X, IIoT, Public Safety, and Commercial. At least two terminal devices are V2X And when involved in positioning for Public Safety use cases, there are three nets There should be work coverage scenarios. For example, in the case of two terminal devices, In-coverage scenario "Nario" refers to the case where both terminal devices are within the network. "Partial coverage" means that one terminal device is within network coverage, but the other terminal device is outside network coverage. An out-of-coverage scenario is when both terminal devices are within network coverage. This refers to situations where the device is outside of network coverage. The terminal device may transition between in-coverage, partial coverage, and out-of-coverage scenarios.

[0020] For example, in Figure 1, the side link between terminal device 1A and terminal device 1B is an In-coverage system. In this scenario, the side link between terminal device 1B and terminal device 1C is a partial coverage scenario, while the side link between terminal device 1C and terminal device 1D is an out-of-coverage scenario. Furthermore, in the communication system according to this embodiment, these scenarios may change as the terminal device 1 moves. Also, the configuration of the communication system according to this embodiment may consist of only a part of the three scenarios described above. For example, the configuration may consist only of the Out-of-coverage scenario. That's fine.

[0021] The operating scenarios for sidelink communication are either PC5 interface only, or Uu interface It may be a combination of an interface and a PC5 interface. For example, terminal device 1 The other terminal device 1 may be connected via the PC5 interface, and sidelink positioning may be performed via the PC5 interface. Alternatively, for example, the base station device 3 and terminal device 1A may be connected via the Uu interface, and terminal device 1A and terminal device 1B may be connected via the PC5 interface. This was followed by positioning via the Uu interface and side via the PC5 interface. Positioning may be performed in combination with link positioning.

[0022] Network-based positioning calculates the location of terminal devices using network nodes. This is a solution. For network-based positioning, the terminal device calculates For this purpose, the necessary information may be notified to the network. For example, in network-based positioning, the terminal device may notify the network of the information necessary to calculate the terminal device's location using LMF (Location The Management Function (LMF) server may be notified, and the terminal device's position may be calculated using LMF. UE-based positioning is a solution in which the position of a terminal device is calculated by the terminal device itself. ru.

[0023] Note that Figure 1 is an example, and the communication system according to this embodiment may include terminal devices that do not perform sidelink communication and / or sidelink positioning, and the terminal devices perform processing corresponding to the functions and settings of the terminal devices. Also, for example, the communication system according to this embodiment may include base station devices that do not perform sidelink communication and / or sidelink positioning, and the base station devices perform processing corresponding to the functions and settings of the base station devices.

[0024] In V2X use cases, the UE involved in positioning can be installed in a vehicle, a Roadside Unit (RSU), or a device used by a road user. Different UEs may have different power supply limitations. For example, a UE used by a road user may have a more limited battery capacity compared to a UE installed in a vehicle or roadside unit.

[0025] The base station device 3 may consist of one or more transmitting devices (or a transmitting point, a transmitting device, a receiving device, a transmitting point, a receiving point). When the base station device 3 consists of multiple transmitting devices, each of the multiple transmitting devices may be located at a different position.

[0026] The base station device 3 may provide one or more serving cells. A single serving cell may be defined as a set of resources used for wireless communication. A serving cell is also referred to as a cell.

[0027] The serving cell may be configured to include at least one downlink component carrier (downlink carrier) and / or at least one uplink component carrier (uplink carrier). The serving cell may be configured to include at least two or more downlink component carriers and / or at least two or more uplink component carriers. The downlink component carrier and the uplink component carrier are also referred to as component carriers (carriers). The uplink component carrier can be used for sidelink communication.

[0028] 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 (SCS) configuration u. The subcarrier spacing is also referred to as numerology. The resource grid includes N size,μ grid,x N RB sc subcarriers. The resource grid starts from a common resource block with an index of N start,μ grid . The common resource block with an index of N start,μ grid is also referred to as the reference point of the resource grid. The resource grid includes N subframe,μ symb OFDM symbols. The subscript x indicates the transmission direction and indicates either the downlink or the uplink. One resource grid is provided for an antenna port p, an SCS configuration u, and a transmission direction. The resource grid may be applied to the downlink, the uplink, and / or the sidelink.

[0029] Resource grids are also referred to as carriers.

[0030] N size,μ grid,x and N start,μ grid This is at least RRC parameter It is given based on a parameter (for example, an RRC parameter called Carrier Bandwidth). This RRC parameter is used to define one or more individual SCS carriers. One resource grid corresponds to one individual SCS carrier. One component key A carrier may contain one or more SCS individual carriers. Information about SCS individual carriers may be included in the system information block. For each SCS individual carrier, a subcarrier An spacing setting u may be provided.

[0031] In a wireless communication system according to one aspect of this embodiment, at least OFDM (Orthogonal Frequency Division Multiplex) is used. OFDM symbols are units in the time domain of OFDM. OFDM symbols include at least one or more subcarriers. OFDM symbols are converted to time-continuous signals in baseband signal generation. At least CP-OFDM (Cyclic Prefix - Orthogonal Frequency Division Multiplex) is used on the downlink. CP-OFDM is used on the uplink. Alternatively, either DFT-s-OFDM (Discrete Fourier Transform - spread - Orthogonal Frequency Division Multiplex) can be used. DFT-s-OFDM may also be obtained by applying transform precoding to CP-OFDM. CP-OFDM is an OFDM that uses CP (Cyclic Prefix).

[0032] An OFDM symbol may be a name that includes the CP (Character Prescription) attached to the OFDM symbol. That is, an OFDM symbol may be configured to include the OFDM symbol itself and the CP attached to that OFDM symbol.

[0033] Figure 2 shows an N according to one aspect of this embodiment. slot symb , SCS setting μ (subcarrier This is an example showing the relationship between the pacing setting (also called u) and the CP setting. In Figure 2A, for example, if the SCS setting μ is 2 and the CP setting is normal CP (NCP), then N slot symb =14, N frame,μ slot =40, N subframe,μ slot =4. Also, in Figure 2B, for example, if the SCS setting μ is 2 and the CP setting is Extended CP (ECP) In some cases, N slot symb =12, N frame,μ slot =40, N subframe,μ slot =4. Subcarrier spacing setting u is for downlink, uplink This may apply to links and / or side links.

[0034] In wireless communication systems, the time unit T is used to represent length in the time domain. c The following may be used. Time unit T c is, T c = 1 / (Δfmax ·N f (Δf max is df max (This can also be written as Δf) max In wireless communication systems, support It may also be the maximum value of the SCS being set. Δf max is Δf max =480kHz That's fine. N f is, N f It may also be = 4096. The constant κ is given by κ = Δf max ·N f / (Δf ref N f,ref ) = 64. Δf ref The frequency may be 15 kHz. f,ref It could also be 2048.

[0035] The transmission of a signal on the downlink and / or the uplink is of length T. f It may consist of wireless frames (system frames, or frames). f =(Δf max ·N f / 100)*T s = 10ms. One frame consists of 10 subframes. The length of a subframe is T. sf =(Δf max ·N f / 1000)*T s = 1ms. The number of OFDM symbols per subframe is N subframe,μ symb =N slot symb *N subframe,μ slot That is the case.

[0036] For a given SCS setting μ, the number of slots and indexes contained in one subframe. A slot number (also called a slot index) n may be given. For example, a slot number (also called a slot index) n μ s In the subframe, the range is from 0 to N subframe,μslot The values ​​may be given in ascending order within the range of -1. For the SCS setting μ, the number of slots included in one frame and An index may be given. Also, slot number n μ s,f The number ranges from 0 to N in the frame. frame,μ slot The values ​​may be given in ascending order within the range of -1. Consecutive N slot symb Each OFDM symbol may be contained within a single slot. slot symb =14 is also acceptable.

[0037] Figure 3 is a schematic diagram showing an example of a resource grid in a subframe according to one aspect of this embodiment. The horizontal axis in Figure 3 represents the frequency domain. Figure 3 shows an example of resource grid settings for a subcarrier spacing setting u=u1 in a component carrier 300, and an example of resource grid settings for a subcarrier spacing setting u=u2 in a component carrier. One or more subcarrier spacing settings may be set for a single component carrier. Although Figure 3 assumes u1=u2-1, the aspects of this embodiment are not limited to the condition u1=u2-1.

[0038] The component carrier 300 is a band with a predetermined width in the frequency domain.

[0039] Point 3000 is the criterion for defining subcarriers. Point 3000 is also referred to as Point A. Common Resource Block (CRB) set 3100 is the set of common resource blocks for the subcarrier spacing setting u1.

[0040] Of the common resource block set 3100, the common resource block containing point 3000 (the block indicated by the upper right diagonal line in Figure 3) is common This is also referred to as the reference point of resource block set 3100. The reference point of common resource block set 3100 may be a common resource block within common resource block set 3100 whose index is 0.

[0041] Offset 3011 is the offset from the reference point of the common resource block set 3100 to the reference point of the resource grid 3001. Offset 3011 is specified relative to the subcarrier spacing setting u1 by the number of common resource blocks. The resource grid 3001 starts from the reference point of the resource grid 3001. size,u grid1,x Includes 1 common resource block.

[0042] Offset 3013 is the reference point of BWP (BandWidth Part) 3003 with index i1, from the reference point of resource grid 3001 (N star t,u BWP,i1 This is the offset up to ).

[0043] Common resource block set 3200 is a set of common resource blocks relating to the subcarrier spacing setting u2.

[0044] Of the common resource block set 3200, point 3000 (upper left in Figure 3) A common resource block (including the block indicated by the diagonal line) is also referred to as a reference point in the common resource block set 3200. The reference point in the common resource block set 3200 may also be a common resource block in the common resource block set 3200 with index 0.

[0045] Offset 3012 is the offset from the reference point of the common resource block set 3300 to the reference point of the resource grid 3002. Offset 3012 is specified for the subcarrier spacing setting u = u2 according to the number of common resource blocks. The resource grid 3002 starts from the reference point of the resource grid 3002 and has N size,u grid2,x common resource blocks included.

[0046] Offset 3014 is the offset from the reference point of the resource grid 3002 to the reference point of the BWP (BandWidth Part) 3004 with index i2 (N star t,u BWP,i2 ).

[0047] Figure 4 is a diagram showing an example setting of the resource grid 3001. In the resource grid of Figure 4, the horizontal axis represents the index l sym of the OFDM symbol, and the vertical axis represents the index k sc of the subcarrier. The resource grid 3001 includes N size、u grid1,x N RB sc [[ID=……]] (The text seems to be incomplete here. There are multiple consecutive "N" without clear context. For the sake of translation integrity, I'll keep it as is for now.) subcarriers and includes OFDM symbols of N subframes,u symb subcarriers. In the resource grid, the resource specified by the subcarrier index k sc and the OFDM symbol index l sym is also called a resource element (RE).

[0048] A resource block (RB) is N RB scIt includes a number of consecutive sub - carriers. A resource block is a comprehensive name for a common resource block, a physical resource block (PRB), and a virtual resource block (VRB). For example, N RB sc may be 12.

[0049] The unit of a resource block is a set of resources corresponding to one OFDM symbol within one resource block. That is, one resource block unit includes 12 resource elements corresponding to one OFDM symbol within one resource block.

[0050] The common resource blocks for the sub - carrier spacing setting u are indexed in ascending order from 0 in the frequency domain within the set of common resource blocks. The index n of the resource block related to the sub - carrier spacing setting u u PRB is such that n u CRB = n u PRB + N start,u BWP,i satisfies the relationship. N start,u BWP,i indicates the reference point of the BWP with index i.

[0051] A BWP is defined as a subset of the common resource blocks included in the resource grid and starts from the reference point N start,u BWP,i and includes N siz e,u BWP,i resource blocks. The BWP for the downlink component carrier is also called the downlink BWP. The BWP for the uplink component carrier is also called the uplink BWP. The BWP for the sidelink component carrier is also called the sidelink BWP.

[0052] An antenna port is defined by the fact that the channels through which symbols are transmitted in one antenna port can be inferred from the channels through which other symbols are transmitted in the same antenna port. For example, the channels referred to here may correspond to physical channels. For example, the symbols referred to here may correspond to OFDM symbols. For example, the symbols referred to here may correspond to resource blocks. For example, the symbols referred to here may correspond to resource elements.

[0053] When the large-scale properties of a channel through which symbols are transmitted in one antenna port can be estimated from the channels through which symbols are transmitted in another antenna port, the two antenna ports are said to be QCL (Quasi Co-Located). This is also acceptable. Large-scale characteristics include delay spread, Doppler spread, Doppler shift, average gain, average delay, and one or more beam parameters (spatial Rx parameters).

[0054] Carrier aggregation may also be communication using multiple aggregated serving cells. Carrier aggregation may also be communication using multiple aggregated component carriers. Carrier aggregation may also be communication using multiple aggregated downlink component carriers. Carrier aggregation may also be communication using multiple aggregated uplink component carriers. Carrier aggregation may also be communication using multiple aggregated sidelink component carriers.

[0055] Figure 5 is a block diagram showing an example configuration of the base station device 3. As shown in Figure 5, the base station device 3 is composed of at least part or all of the wireless transceiver unit (physical layer processing unit) 30 and the upper layer processing unit 34. The wireless transceiver unit 30 is composed of at least part or all of the antenna unit 31, the RF (Radio Frequency) unit 32 and the baseband unit 33. The upper layer processing unit 34 is composed of at least part or all of the media access control layer processing unit 35 and the wireless resource control layer processing unit 36.

[0056] The wireless transmitting / receiving unit 30 includes at least part or all of the wireless transmitting unit 30a and the wireless receiving unit 30b. The configuration of the baseband unit 33 included in the wireless transmitting unit 30a and the configuration of the baseband unit 33 included in the wireless receiving unit 30b may be the same or different. The configuration of the RF unit 32 included in the wireless transmitting unit 30a and the configuration of the RF unit 32 included in the wireless receiving unit 30b may be the same or different. The configuration of the antenna unit 31 included in the wireless transmitting unit 30a and the configuration of the antenna unit 31 included in the wireless receiving unit 30b may be the same or different.

[0057] The upper layer processing unit 34 provides downlink data (transport blocks) to the wireless transceiver unit 30 (or wireless transmission unit 30a). The upper layer processing unit 34 performs processing for the Media Access Control (MAC) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and / or the RRC layer.

[0058] The media access control layer processing unit 35, included in the upper layer processing unit 34, performs MAC layer processing.

[0059] The wireless resource control layer processing unit 36, included in the upper layer processing unit 34, performs RRC layer processing. The wireless resource control layer processing unit 36 ​​manages various configuration information / parameters (RRC parameters) of the terminal device 1. Based on the RRC messages received, the RRC parameters are configured.

[0060] The wireless resource control layer processing unit 36 ​​sets a control resource set for the terminal device 1. Multiple PDCCH candidates are configured (set) within the set control resource set. The wireless resource control layer processing unit 36 ​​sets a search area for the terminal device 1. The wireless resource control layer processing unit 36 ​​sets a DCI format to be monitored in the search area for the terminal device 1. To determine.

[0061] The wireless resource control layer processing unit 36 ​​sets the DCI format to be applied to terminal device 1 within the control resource set. The wireless resource control layer processing unit 36 ​​generates RRC signaling indicating the DCI format to be applied. The wireless resource control layer processing unit 36 ​​sets one or more DCI formats to be applied in the wireless transmission unit 30a. ru.

[0062] The wireless resource control layer processing unit 36 ​​configures settings for multiple search areas. Each of these settings for multiple search areas is indexed.

[0063] The wireless resource control layer processing unit 36 ​​sets resources for transmitting HARQ-ACK to terminal device 1. The wireless resource control layer processing unit 36 ​​sets resources for transmitting HARQ-ACK to PDSCH in the downlink frequency band (cell, component carrier, carrier). The line resource control layer processing unit 36 ​​allocates resources for transmitting HARQ-ACK to the PDSCH via the uplink Set the link frequency band (cell, component carrier, carrier).

[0064] The wireless resource control layer processing unit 36 ​​provides CSI feedback (channel) to the terminal device 1. The settings related to the transmission of status information are configured. The wireless resource control layer processing unit 36 ​​processes the CSI feed The back transmission period, the start timing (offset) of CSI feedback transmission, and the type of CSI feedback information are set. The wireless resource control layer processing unit 36 ​​sets multiple CSI Configure the settings related to feedback. Multiple CSI feedback settings are available separately. It will be indexed.

[0065] The wireless resource control layer processing unit 36 ​​performs SPS-related settings on the terminal device 1. The resource control layer processing unit 36 ​​controls the period of the SPS resources (PDSCH resources) and the SPS resources The start timing (offset) of the (PDSCH resource), the number of HARQ processes set for the SPS, the offset used to derive the HARQ process ID used for the SPS, and the RNTI value for scheduling the SPS are set. The wireless resource control layer processing unit 36 ​​makes settings for multiple SPSs. The settings for multiple SPSs are each indexed.

[0066] The wireless resource control layer processing unit 36 ​​configures carrier aggregation for the terminal device 1. As part of the carrier aggregation configuration, the wireless resource control layer processing unit 36 ​​configures serving cells (secondary cells, primary secondary cells). A serving cell may consist of a downlink component carrier. A serving cell may consist of both a downlink component carrier and an uplink component carrier. The wireless resource control layer processing unit 36 ​​controls the wireless transceiver 30 to perform transmission processing using the downlink component carrier configured in the carrier aggregation configuration for the terminal device 1. The wireless resource control layer processing unit 36 ​​controls the wireless transceiver 30 to perform reception processing using the uplink component carrier configured in the carrier aggregation configuration for the terminal device 1.

[0067] The wireless resource control layer processing unit 36 ​​configures the terminal device 1 for sidelink settings. The data is set and notified to the terminal device 1 via the wireless transceiver 30. For example, the following information is used as parameters related to the side link. • Sidelink BWP configuration • Sidelink wireless bearer configuration • Side link measurement configuration

[0068] Information indicating the configuration of the sidelink BWP is shown in the symbols within the slots used for the sidelink. The starting position, symbol length, PSBCH configuration, sidelink resource pool configuration, etc. This includes information that is shown. Information showing the PSBCH configuration includes information showing parameters used for PSBCH transmit power control. Information showing the sidelink resource pool configuration includes information showing the configuration of the sidelink receive resource pool, the configuration of the sidelink transmit resource pool, etc. The configuration of the sidelink transmit resource pool includes the configuration of the transmit resource pool for the method in which the base station device 3 instructs the terminal device 1 with scheduling information (sidelink resource allocation mode 1), and the configuration of the transmit resource pool for the method in which the terminal device 1 autonomously selects resources (sidelink resource allocation mode 2).

[0069] Information indicating the configuration of the sidelink resource pool includes information indicating the configuration of the PSCCH, information indicating the configuration of the PSSCH, information indicating the configuration of the PSFCH, and information indicating the subchannel size of the sidelink. Information indicating the starting position of the side link's subchannels, and the MCS used in the side link. Information indicating the cable, information indicating the configuration of the side link PTRS, and the TDD UL-DL configuration of the side link. Information indicating the number of PRBs in the sidelink resource pool, sidelink resource pool Information indicating the time resources of the link, information indicating the parameters for sidelink transmit power control, information indicating the maximum number of reserved PSCCH / PSSCH resources that can be represented by one SCI, and reservable resources This includes information indicating the set of sensing intervals, information indicating whether the DM RS of PSCCH or PSSCH is used for L1 RSRP measurement in sensing operations, information indicating the start position of the sensing window, information indicating the end position of the sensing window, and information indicating the configuration of sidelink synchronization.

[0070] Furthermore, the information describing the configuration of the sidelink resource pool may include information describing the configuration of the slots. This may include information indicating which of the following configurations applies: a slot configuration in which PSCCH can be placed only in the first half of the slot (the second OFDM symbol, or the second and third OFDM symbols), a slot configuration in which PSCCH can be placed in the first half of the slot (the second OFDM symbol, or the second and third OFDM symbols), or a slot configuration in which PSCCH can be placed in the second half of the slot (the ninth OFDM symbol, or the ninth and tenth OFDM symbols).

[0071] PSSCH is placed in OFDM symbols after the OFDM symbol in which PSCCH is placed. For example, PSSCH is placed in the second or subsequent OFDM symbols in a slot. For example, if PSCCH is placed in the first half of a slot, PSSCH will be placed in the second or subsequent OFDM symbols in that slot. For example, if PSCCH is placed in the latter half of the slot, PSSCH will be placed in the 9th or later OFDM symbol within the slot.

[0072] The information indicating the configuration of PSCCH includes the number of symbols in PSCCH and the number of RBs that make up PSCCH. This information indicates the initial value (ID) of the scrambling of the PSCCH DM RS, 1 st Stage SCI Includes information indicating the number of reserved bits.

[0073] Information showing the configuration of PSSCH is 2 nd Information indicating candidate β offsets used to determine the number of coded modulation symbols in stage SCI, information indicating the time-domain pattern of DM RS in PSSCH, and PSSCH 2 nd This includes information indicating a scaling factor to limit the number of resource elements allocated to the stage SCI.

[0074] The information describing the configuration of the PSFCH includes information indicating the set of PRBs used for PSFCH transmission and reception, information indicating the number of cyclic shift pairs used for PSFCH transmission that can be multiplexed on a single PRB, information indicating the number of PSFCH resources available for multiplexing HARQ-ACK information, information indicating the scrambling ID for PSFCH sequence hopping, information indicating the interval of the PSFCH resource, and information indicating the minimum time gap between the PSSCH and PSFCH. The information used is a bitmap, where each bit indicates whether the PRB corresponding to the bit position is included in the set of PRBs used for PSFCH transmission and reception. The information indicating the interval of the PSFCH resource indicates the interval between slots where the PSFCH resource is located. For example, information indicating intervals of 1 slot, 2 slots, and 4 slots is used.

[0075] The information indicating the parameters for sidelink transmit power control includes information indicating the parameters used for transmit power control based on sidelink path loss, and information indicating the parameters used for transmit power control based on downlink path loss.

[0076] Information indicating the sidelink synchronization configuration includes information indicating whether the sidelink synchronization configuration is used for transmitting and receiving sidelink synchronization signals when terminal device 1 is synchronized with GNSS, or when terminal device 1 is synchronized with base station device 3, information indicating the type of hysteresis when evaluating terminal device 1 for synchronization reference, information indicating the number of sidelink SSB transmissions within a single sidelink SSB section, information indicating the section and starting position of the sidelink SSB, information indicating the ID of the sidelink synchronization signal, and This includes information such as the threshold used to determine whether to transmit the idling synchronization signal.

[0077] The information indicating the configuration of the sidelink wireless bearer includes information indicating whether terminal device 1 is the synchronization source, information indicating parameters used to detect sidelink wireless link failures, information indicating the frequency on which the sidelink is used, information indicating the configuration for sidelink resource allocation mode 1, information indicating the configuration for sidelink resource allocation mode 2, information indicating whether CSI reporting is used, and the sidelink scheduler. Information indicating the configuration of the link request, information indicating the transmission and reception priority of the sidelink SSB, information indicating the RLC mode, information indicating the configuration of the sidelink logical channel, sidelink RLC This includes information that shows the configuration.

[0078] The information indicating the frequency at which the sidelink is used further includes information indicating the subcarrier spacing, information indicating the frequency position of the sidelink SSB, and information indicating the synchronization priority.

[0079] Information indicating the configuration for sidelink resource allocation mode 1 includes information indicating the RNTI used by base station equipment 3 to scramble the CRC in DCI format (e.g., DCI format 3_0) containing scheduling information for terminal equipment 1, information indicating the configuration of the sidelink MAC, and information indicating the configuration of the sidelink configured grant. Information indicating the configuration of the sidelink MAC includes information indicating the configuration of the sidelink BSR, and information indicating thresholds used to determine the priority of sidelink transmission and uplink transmission. Information indicating the configuration of the sidelink configured grant includes information indicating an ID for identifying the configured grant for the sidelink, information indicating the frequency resources of the sidelink configured grant, information indicating the time resources of the sidelink configured grant, information indicating the HARQ process ID of the sidelink configured grant, information indicating the resources used for HARQ-ACK transmission of the sidelink, information indicating the interval of the sidelink configured grant, information indicating the resource pool to which the sidelink configured grant is applied, and information indicating the starting subchannel of the sidelink configured grant.

[0080] Information showing the configuration for sidelink resource allocation mode 2 is provided by MCS, subchannel Information indicating PSSCH transmission parameters such as the number, number of retransmissions, and transmission power parameters, This includes information indicating probabilities used in resource selection, and information indicating thresholds for RSRPs used in resource selection.

[0081] In sidelink resource allocation mode 2, terminal device 1 performs resource selection. In sidelink resource allocation mode 2, terminal device 1 reserves resources on a slot-by-slot basis. A time interval (resource reservation interval) between the first set of resources selected and the next set of resources reserved is set for each resource pool. Base station device 3 sends RRC signaling to terminal device 1, which includes a parameter indicating this time interval. To believe. Terminal device 1 is equipped with RRC signaling that includes parameters indicating the time interval. It is received from location 3. This time interval is also used for the time interval between sets of reserved resources.

[0082] Terminal device 1 receives information contained in the PSCCH (1 st (Stage SCI information) from other terminals Device 1 recognizes the resources that have been reserved, excludes those resources, and selects and reserves resources for use by its own terminal device 1 from the resources that were not recognized as being reserved by other terminal devices 1. Terminal device 1 receives the PSSCH and 2 nd stage SCI The information may also be used to recognize resources secured or reserved on other terminal devices 1.

[0083] Information indicating the configuration of a sidelink logical channel includes information indicating the sidelink logical channel priority, information indicating the configuration of scheduling requests applicable to the sidelink logical channel, information indicating the bitrate, information indicating the sidelink bucket size interval, information indicating whether HARQ feedback is applied to the sidelink logical channel, information indicating the subcarrier interval applied to the resource to which the sidelink logical channel is mapped, information indicating the maximum physical channel interval of the resource to which the sidelink logical channel is mapped, and information indicating the ID of the sidelink logical channel group.

[0084] Information indicating the configuration of the sidelink measurement includes information indicating the frequency at which the sidelink measurement is performed, information indicating the filter coefficients applied to the sidelink measurement, information indicating the interval for reporting the sidelink measurement results, information indicating the threshold used to determine whether to report the sidelink measurement results, and information indicating the interval used to determine whether to report the sidelink measurement results.

[0085] Terminal device 1 transmits information regarding the side link to base station device 3 via RRC signaling. The following information will be provided: information indicating the frequencies that terminal device 1 is interested in receiving sidelink communications, information indicating the frequencies that terminal device 1 is interested in transmitting sidelink communications, information indicating the parameters for requesting sidelink transmission resources, information regarding sidelink capability, information indicating the cast type (broadcast, groupcast, unicast) requesting sidelink resources, information indicating Destination Identity, and information regarding sidelink QoS. Information related to this, information indicating RLC mode, and a list of synchronization references used in terminal device 1. This includes information indicating the following:

[0086] The radio resource control layer processing unit 36 ​​of the base station device 3 considers the Destination identity requested by the terminal device 1 and indicates multiple Destination identities to the terminal device 1. The device notifies the signaling. Terminal device 1 recognizes and sets (stores) the destination identity of the communication partner with whom it will transmit a sidelink, using the resource pool configured by base station device 3.

[0087] The wireless transceiver unit 30 (or wireless transmitter unit 30a) performs processing such as encoding and modulation. The wireless transceiver 30 (or wireless transmitter 30a) generates complex modulation symbols by encoding and modulating the downlink data. The wireless transceiver 30 (or wireless transmitter 30a) converts the complex modulation symbols on the OFDM symbols into an OFDM-based baseband signal by converting them into a time-continuous signal. The wireless transceiver 30 (or wireless transmitter 30a) transmits the baseband signal to the terminal device 1 via the radio frequency. The wireless transceiver 30 (or wireless transmitter 30a) may also place the baseband signal on the component carrier.

[0088] The wireless transceiver 30 (or wireless receiver 30b) performs processing such as demodulation and decoding. The wireless transceiver 30 (or wireless transmitter 30a) separates, demodulates, and decodes the received signal and provides the decoded information to the upper layer processing unit 34. The wireless transceiver 30 (or wireless receiver 30b) may sense the channel prior to transmitting the signal.

[0089] The RF unit 32 demodulates (downconverts) the signal received via the antenna unit 31 into a baseband signal and / or removes unwanted frequency components. The RF unit 32 provides the processed analog signal to the baseband unit 33.

[0090] The baseband section 33 converts the analog signal input from the RF section 32 into a digital signal. The baseband section 33 separates the portion corresponding to CP from the digital signal. The baseband section 33 applies a Fast Fourier Transform (FFT) to the digital signal from which CP has been removed. The baseband section 33 provides a signal in the frequency domain.

[0091] The baseband unit 33 performs an inverse fast Fourier transform (IFFT) on the downlink data to generate an OFDM symbol, adds a CP to the generated OFDM symbol to generate a baseband digital signal, and converts the baseband digital signal into an analog signal. The baseband unit 33 outputs the converted analog signal to the RF unit 32.

[0092] The RF unit 32 removes extraneous frequency components from the analog signal input from the baseband unit 33, upconverts the analog signal to the carrier frequency, and transmits it via the antenna unit 31. The RF unit 32 may also have a function to control the transmission power. The RF unit 32 is also referred to as the transmission power control unit.

[0093] 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, one or more sidelink component carriers) may be configured on terminal device 1.

[0094] Each serving cell set in terminal device 1 is a primary cell (PCell), a plastic cell It may be either an Imari SCG cell (PSCell) or a secondary cell (SCell).

[0095] A PCell is a serving cell included in a Master Cell Group (MCG). A cell in which the initial connection establishment procedure or connection re-establishment procedure is performed by terminal device 1. That is the case.

[0096] A PSCell is a serving cell included in a Secondary Cell Group (SCG). This is a cell that is randomly accessed by terminal device 1 during the reconfiguration procedure with synchronization (Reconfiguration with synchronization).

[0097] SCell may be included in MCG, or it may be included in SCG.

[0098] A serving cell group (cell group) is a designation that includes at least an MCG and an SCG. A 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 a serving cell group may be operated by carrier aggregation.

[0099] One or more downlink BWPs each serving cell (or each downlink control It may be set for the Ponent Carrier. If one or more uplink BWPs One or more sidelink BWPs may be set for each serving cell (or each uplink component carrier). It may also be set for the drink component carrier.

[0100] Of the one or more downlink BWPs for a single serving cell (or downlink component carrier), one downlink BWP is the active downlink BWP. It may be set as (one downlink BWP may be activated). 1 Of the one or more uplink BWPs for a serving cell (or uplink component carrier), one uplink BWP shall be the active uplink BWP. It may be set (one uplink BWP may be activated). Of the one or more sidelink BWPs for a serving cell (or sidelink component carrier), one sidelink BWP is an active sidelink BWP. It may be set as (one sidelink BWP may be activated).

[0101] PDSCH, PDCCH, CSI-RS, and other physical downlink channels / signals may be received on the active downlink BWP. Terminal device 1 may receive PDSCH, PDCCH, and CSI-RS on the active downlink BWP. In addition, terminal device 1 may, in some cases, receive signals on an inactive downlink BWP or on a serving cell. It may receive CSI-RS or other downlink channels / signals (e.g., PRS (Positioning RS)) in cells that do not have one. PUSCH, PUCCH, SRS, and other physical uplink channels / signals may be transmitted on the active uplink BWP. Terminal device 1, In an active uplink BWP, PUSCH, PUCCH, and SRS may be transmitted. In addition, in some cases, terminal device 1 may transmit a certain message in an inactive uplink BWP. i is an SRS or other downlink channel in a cell that is not a serving cell / It may receive signals (e.g., positioning SRS). Active downlink BWP and active uplink BWP are also referred to as active BWP.

[0102] Downlink BWP switching deactivates the active downlink BWP and activates one of the inactive downlink BWPs, which is different from the active downlink BWP. Downlink BWP switching may be controlled by the BWP field included in the downlink control information. Downlink BWP switching may be controlled by higher-layer parameters. It may also be used.

[0103] Uplink BWP switching deactivates the active uplink BWP and activates one of the inactive uplink BWPs, which is different from the active uplink BWP. Uplink BWP switching may also be controlled by the BWP field included in the downlink control information. Uplink BWP switching is controlled by higher-layer parameters. It may also be used.

[0104] Of the one or more downlink BWPs for a single serving cell, two or more No more downlink BWPs will be set as active downlink BWPs at the same time for a given serving cell. That's fine.

[0105] Of the one or more uplink BWPs for a single serving cell, two or more No more uplink BWPs will be set as active uplink BWPs at the same time for a given serving cell. That's fine.

[0106] The procedures described above for uphill link BWP may also be applicable to sidelink BWP.

[0107] Figure 6 is a block diagram showing an example configuration of terminal device 1. As shown in Figure 6, terminal device 1 is composed of at least part or all of a wireless transceiver unit (physical layer processing unit) 10 and a higher layer processing unit 14. The wireless transceiver unit 10 is composed of at least part or all of an antenna unit 11, an RF unit 12, and a baseband unit 13. The higher layer processing unit 14 is composed of at least part or all of a media access control layer processing unit 15 and a wireless resource control layer processing unit 16.

[0108] The wireless transmitting / receiving unit 10 includes at least part or all of the wireless transmitting unit 10a and the wireless receiving unit 10b. The configuration of the baseband unit 13 included in the wireless transmitting unit 10a and the configuration of the baseband unit 13 included in the wireless receiving unit 10b may be the same or different. The configuration of the RF unit 12 included in the wireless transmitting unit 10a and the configuration of the RF unit 12 included in the wireless receiving unit 10b may be the same or different. The configuration of the antenna unit 11 included in the wireless transmitting unit 10a and the configuration of the antenna unit 11 included in the wireless receiving unit 10b may be the same or different.

[0109] The wireless transceiver unit 10 performs physical layer processing.

[0110] For example, the wireless transceiver 10 may generate the baseband signal for the uplink physical channel. Here, the transport blocks delivered from the upper layer on the UL-SCH may be located on the uplink physical channel. For example, the wireless transceiver 10 may generate the baseband signal for the uplink physical signal.

[0111] For example, the wireless transceiver 10 may attempt to detect information transmitted by the downlink physical channel. Here, the transport block of the information transmitted by the downlink physical channel may be delivered to the upper layer on the DL-SCH. For example, the wireless transceiver 10 may attempt to detect information transmitted by the downlink physical signal.

[0112] For example, the wireless transceiver 10 may generate a baseband signal for the sidelink physical channel. For example, the wireless transceiver 10 may generate a baseband signal for the sidelink physical signal. For example, the wireless transceiver 10 may attempt to detect information transmitted by the sidelink physical channel. For example, the wireless transceiver 10 may attempt to detect information transmitted by the sidelink physical signal.

[0113] The wireless transceiver unit 10 (or wireless receiver unit 10b) receives the PDCCH. 10 (or wireless receiver 10b) performs the process of receiving PDCCH in the downlink frequency band (cell, component carrier, carrier). Wireless transceiver 10 (or wireless The receiving unit 10b) performs demodulation, decoding, and other processing on the PDCCH. Wireless transceiver unit 10(a The wireless receiver 10b) processes the reception of the PDCCH and detects downlink control information. Perform the following process.

[0114] The wireless transceiver unit 10 (or wireless receiver unit 10b) receives the PDSCH. 10 (or wireless receiver 10b) performs processing to receive PDSCH in the downlink frequency band (cell, component carrier, carrier). The signal unit 10b) performs demodulation, decoding, and other processing on the PDSCH.

[0115] The wireless transceiver unit 10 (or wireless receiver unit 10b) receives the PSCCH. Unit 10 (or wireless receiver 10b) performs demodulation, decoding, and other processing on the PSCCH. The transmitting / receiving unit 10 (or wireless receiving unit 10b) performs the process of receiving PSCCH, and the side The wireless receiver 10b performs processing to detect the link control information. Determines the interlace (referred to later, resource block). The receiving unit of terminal device 1 determines the OFDM symbol in which PSCCH may be placed. Wireless transceiver 10 (or wireless receiver) 10b) performs blind decoding of the PSCCH. Wireless transceiver 10 (or wireless receiver 10 b) Blind decoding of a PSCCH in one slot within a single resource pool. The line transmitting / receiving unit 10 (or wireless receiving unit 10b) may blind decode PSCCHs in two or more slots within a single resource pool. Section 10b) allows two or more PSCCHs in one slot within one resource pool. It may be decoded. The wireless transceiver 10 (or wireless receiver 10b) receives PSSCH. The wireless transceiver 10 (or wireless receiver 10b) performs demodulation, decoding, etc. for the PSSCH. The following processing is performed. The receiving unit of terminal device 1 receives PSFCH. Wireless transceiver 10 (or The wireless receiver 10b) receives HARQ-ACK on PSFCH.

[0116] The wireless transceiver unit 10 (or wireless transmitter unit 10a) transmits a HARQ-ACK. The wireless transceiver unit 10 (or wireless transmitter unit 10a) transmits a HARQ-ACK to the PDSCH. Wireless transmission and reception The signal unit 10 (or wireless transmission unit 10a) transmits HARQ-ACK in the uplink frequency band (cell, component carrier, carrier).

[0117] The wireless transceiver unit 10 (or wireless transmitter unit 10a) transmits a HARQ-ACK to PSSCH. The wireless transceiver 10 (or wireless transmitter 10a) transmits HARQ-ACK in the sidelink frequency band. The wireless transceiver 10 (or wireless transmitter 10a) transmits HARQ-ACK in PSFCH. The wireless transceiver 10 (or wireless transmitter 10a) sends a HARQ-ACK in PSSCH. It is permissible to send a signal. The wireless transceiver 10 (or wireless transmitter 10a) does not need to send a HARQ-ACK to PSSCH.

[0118] The wireless transceiver unit 10 (or wireless transmitter unit 10a) transmits PSCCH. Unit 10 (or wireless transmitter 10a) performs encoding, modulation, and other processing on the PSCCH. The line transmission / reception unit 10 (or wireless transmission unit 10a) uses PSCCH to transmit sidelink control information (1 stThe process of transmitting stage SCI is performed. Wireless transceiver 10 (or wireless transmission unit 10 a) is the frequency resource that makes up the PSCCH (interlace, resource block, described later). The wireless transceiver 10 (or wireless transmitter 10a) determines the OFDM symbol in which PSCCH may be placed. The wireless transceiver 10 (or wireless transmitter 10a) transmits PSSCH. The wireless transceiver 10 (or wireless transmitter 10a) encodes and modifies PSSCH. Adjustment and other processing are performed. The wireless transceiver unit 10 (or wireless transmitter unit 10a) uses PSSCH Side link control information (2 nd The process involves sending the stage SCI. Information such as MAC CE is transmitted using PSSCH.

[0119] The wireless transceiver 10 performs carrier sensing (LBT) before transmitting a signal to avoid signal collisions with other devices. The following types of LBT are used. Type 1: Random backoff using a contention window with variable size. LBT performs the process • Type 2A: LBT without random backoff process, performing 25us carrier sense before signal transmission. • Type 2B: LBT without a random backoff process and performs 16us carrier sense before signal transmission. • Type 2C: LBT is not performed.

[0120] The wireless transceiver 10 transmits a signal only after detecting that there is no transmission from other devices during listening (idle state), and does not transmit a signal if it detects that there is transmission from other devices during listening (busy state). The wireless transceiver 10 will transmit a signal only if the LBT result is idle. If the LBT result is busy, the system will acquire a transmission opportunity and transmit the data. No. The transmission opportunity time is called Channel Occupancy Time (COT). In LBT, terminal device 1 monitors the channel before transmitting data, and idle channels The system evaluates the channel and sends data only if it is confirmed to be idle.

[0121] When the wireless transceiver 10 performs a random backoff process, it randomly generates a backoff counter value within the contention window size after the previous transmission. In random backoff, the terminal device 1 evaluates whether the channel is idle by detecting the channel energy at each time interval using the random backoff counter. The wireless transceiver 10 waits until it confirms that the channel is idle for a certain period of time, and performs carrier sensing (sensing) at each sensing slot time. If the wireless transceiver 10 finds that the channel is idle as a result of carrier sensing, it decreases the backoff counter value. If the wireless transceiver 10 finds that the channel is busy as a result of carrier sensing, it maintains the backoff counter value and waits until it confirms that the channel is idle for a certain period of time, and then performs carrier sensing. After repeating the above operations, the wireless transceiver 10 can obtain access to the channel and start transmitting a signal on that channel after the backoff counter value becomes zero.

[0122] When HARQ-ACK feedback is applied to a sidelink, the wireless transceiver 10 updates the contention window size based on the HARQ-ACK status. If the HARQ-ACK status is ACK, the wireless transceiver 10 updates the contention window size. Set to the minimum value. If the HARQ-ACK status is NACK, the wireless transceiver 10 sets the contention window size to the next largest value. If the contention window size reaches the maximum settable value, the wireless transceiver 10 continues to use the maximum value even if the HARQ-ACK status is NACK. If the wireless transceiver 10 has used the maximum contention window size a predetermined number of times consecutively, it may set the contention window size to the minimum value (it may be reset). The predetermined number of times may be set by the base station device 3 for the terminal device 1.

[0123] The initial value of the random backoff counter may be an integer between 0 and the contention window size. Before the random backoff counter is initialized, the contention window size is adjusted to control the average time required for terminal device 1 to access the channel.

[0124] Terminal device 1 performs listen-before-talk (LBT) on the channel before transmitting on the channel. Terminal device 1 may adjust the time interval (amount of time) for which LBT is performed. Terminal device 1 may select a random number between zero and the contention window size. If the channel is free for at least the time interval associated with the selected random number, terminal device 1 may have an opportunity to transmit and may transmit.

[0125] The upper layer processing unit 14 provides uplink data or sidelink data to the wireless transceiver unit 10 (or wireless transmission unit 10a). The upper layer processing unit 14 performs processing on the MAC layer, PDCP layer, RLC layer, and / or RRC layer. The upper layer processing unit 14 may also perform processing on the MAC layer, PDCP layer, RLC layer, and / or RRC layer in PC5.

[0126] The media access control layer processing unit 15, included in the upper layer processing unit 14, performs MAC layer processing.

[0127] The media access control layer processing unit (MAC layer processing unit) 15 performs sidelink HARQ operations. It processes sidelink scheduling requests, sidelink buffer status reports, and CSI reports.

[0128] The wireless resource control layer processing unit 16 included in the upper layer processing unit 14 performs processing on the RRC layer and / or PC5-RRC (PC5 RRC). The wireless resource control layer processing unit 16 performs various operations on the terminal device 1. It manages configuration information / parameters (RRC parameters) and / or PC5-RRC parameters. The radio resource control layer processing unit 16 receives RRC from the base station device 3. RRC parameters and / or PC5-RRC parameters are configured based on messages and / or PC5-RRC messages received from other terminal devices.

[0129] For example, the wireless resource control layer processing unit 16 processes RRC messages on a certain logical channel. The RRC parameters contained in the data may be obtained and set in the memory area of ​​terminal device 1. The RRC parameters set in the memory area of ​​terminal device 1 may be provided to the lower layer.

[0130] The wireless resource control layer processing unit 16 processes the RRC signaling received from the base station device 3. The control resource set is configured. The wireless resource control layer processing unit 16 configures the search area within the control resource set. The wireless resource control layer processing unit 16 configures the PDCCH candidates to be monitored within the control resource set. The control unit 16 sets the number of PDCCH candidates to be monitored within the control resource set (configure The wireless resource control processing unit 16 sets (configures) the aggregation level of the PDCCH candidates monitored within the control resource set.

[0131] The wireless resource control layer processing unit 16 monitors the DCI format within the control resource set. The wireless resource control layer processing unit 16 sets the DCI form monitored within the search area. - A mat may be set. The wireless resource control layer processing unit 16 sets the DCI format to be monitored within the control resource set based on the RRC signaling indicated from the base station device 3. The wireless resource control layer processing unit 16 sets the DCI format to be monitored within the control resource set based on the RRC signaling indicated from the base station device 3. You may also configure the DCI format to be monitored within the search area. Wireless resource control The layer processing unit 16 sets one or more DCI formats to be monitored in the wireless transceiver unit 10 (or wireless receiver unit 10a).

[0132] The wireless resource control layer processing unit 16 is based on the RRC signaling received from the base station device 3. Next, settings related to sidelinks are configured. The radio resource control layer processing unit 16 sets the parameters related to sidelinks notified by the base station device 3. The parameters related to sidelinks will be described later. For example, the radio resource control layer processing unit 16 sets the parameters related to sidelinks that are located where PSCCH is located. Set the OFDM symbol. For example, the wireless resource control layer processing unit 16 sets the PSCCH where The bandwidth is set. For example, the wireless resource control layer processing unit 16 configures one PSCCH. Set the number of resource blocks or interlaces. The wireless resource control layer processing unit 16 makes settings related to the transmission and reception of PSCCH to the wireless transceiver unit 10. For example, the wireless resource - The control layer processing unit 16 sets the slots from which PSFCH can be transmitted. For example, a slot from which PSFCH can be transmitted is set for every four slots.

[0133] The wireless resource control layer processing unit 16 determines the communication partner for unicast and groupcast. Set up more than one destination identity. Groupcast is communication between multiple terminal devices, and multiple destination identities are set up.

[0134] The wireless transceiver 10 (or wireless transmitter 10a) performs processing such as encoding and modulation. The wireless transceiver 10 (or wireless transmitter 10a) generates complex modulation symbols by encoding and modulating the uplink and / or sidelink data. The wireless transceiver 10 (or wireless transmitter 10a) converts the complex modulation symbols on the OFDM symbols into an OFDM-based baseband signal by converting them into a time-continuous signal. The wireless transceiver 10 (or wireless transmitter 10a) transmits the baseband signal to the base station device 3 or other terminal device via the radio frequency. The wireless transceiver 10 (or wireless transmitter 10a) may place the baseband signal on a component carrier.

[0135] The wireless transceiver 10 (or wireless receiver 10b) performs processing such as demodulation and decoding. The wireless transceiver 10 (or wireless receiver 10b) performs BWP (Activity) of the serving cell. The wireless transceiver 10 (or wireless receiver 10b) may receive physical signals in the downlink (BWP) and / or sidelink (BWP). The wireless transceiver 10 (or wireless receiver 10b) separates, demodulates, and decodes the received signals and provides the decoded information to the upper layer processing unit 14. The wireless transceiver 10 (or wireless receiver 10b) may sense the channel prior to transmitting the signal.

[0136] The RF unit 12 demodulates (downconverts) the signal received via the antenna unit 11 into a baseband signal and / or removes unwanted frequency components. The RF unit 12 provides the processed analog signal to the baseband unit 13.

[0137] The baseband section 13 converts the analog signal input from the RF section 12 into a digital signal. The baseband section 13 separates the portion corresponding to CP from the digital signal. The baseband section 13 applies a Fast Fourier Transform (FFT) to the digital signal from which CP has been removed. The baseband section 13 provides a signal in the frequency domain.

[0138] The baseband unit 13 performs an inverse fast Fourier transform (IFFT) on the uplink or sidelink data to generate an OFDM symbol, adds a CP to the generated OFDM symbol to generate a baseband digital signal, and converts the baseband digital signal into an analog signal. The baseband unit 13 outputs the converted analog signal to the RF unit 12.

[0139] The RF unit 12 removes extraneous frequency components from the analog signal input from the baseband unit 13, upconverts the analog signal to the carrier frequency, and transmits it via the antenna unit 11. The RF unit 12 may also have a function to control the transmission power. The RF unit 12 is also referred to as the transmission power control unit.

[0140] This section discusses physical signals (also referred to simply as signals).

[0141] Physical signals are a comprehensive term encompassing downlink physical channels, downlink physical signals, uplink physical channels, uplink physical signals, sidelink physical channels, and sidelink physical signals.

[0142] The uplink physical channel may correspond to a set of resource elements that carry information originating from the upper layer (information provided from the upper layer) and / or uplink control information. The uplink physical channel may also be a physical channel used within the uplink component carrier. The uplink physical channel is transmitted from terminal device 1. The uplink physical channel may be received by the base station device 3. In one form of the wireless communication system of this embodiment, the physical uplink control channel (PUCCH) and the physical At least some or all of the Uplink Shared Channel (PUSCH) and the Physical Random Access Channel (PRACH) may be used.

[0143] PUCCH transmits Uplink Control Information (UCI) It may be used. PUCCH may be sent to deliver, transmit, or convey uplink control information. Uplink control information is placed in PUCCH using map or arrange ) may also be done. Terminal device 1 may transmit a PUCCH containing uplink control information. i. The wireless transceiver unit 30 of the base station device 3 receives PUCCH containing uplink control information. You may do so.

[0144] Uplink control information (uplink control information bits, uplink control information sequence, uplink control information type) is channel state information (CSI), schedule Scheduling Request (SR), and Hybrid Automated Resend Request Confirmation Includes at least part or all of the Recognition (HARQ-ACK).

[0145] Channel status information is conveyed using channel status information bits or channel status information sequences. Scheduling requests are also referred to as scheduling request bits or scheduling request bits. HARQ-ACK information is also referred to as HARQ-ACK information bits or HARQ-ACK information sequences.

[0146] HARQ-ACK information includes Transport Block (TB), MAC Protocol Data Unit (MAC PDU), Downlink Shared Channel (DL-SCH), and Uplink Shared Channel (UL-SCH). The HARQ-ACK status may include the status of the HARQ-ACK corresponding to the transport block. The HARQ-ACK status may include an ACK (Acknowledge) and a NACK (Negative-acknowledge) corresponding to the transport block. The ACK may indicate that the transport block was successfully decoded. NACK may indicate that the transport block was not decoded correctly. HARQ-ACK information may include a HARQ-ACK codebook containing one or more HARQ-ACK statuses (or HARQ-ACK bits).

[0147] For example, the correspondence between HARQ-ACK information and a transport block may also mean the correspondence between HARQ-ACK information and the PDSCH used to transmit the corresponding transport block. good.

[0148] The HARQ-ACK status may indicate an ACK or NACK corresponding to a single code block group (CBG) contained within a transport block.

[0149] A scheduling request may be used, at the very least, to request a PUSCH (or UL-SCH) resource for a new transmission. This may be used to indicate either a positive SR or a negative SR. When a scheduling request indicates a positive SR, it may be referred to as a positive SR being sent. A positive SR indicates that PUSCH (or UL-SCH) resources for the initial transmission have been sent to terminal device 1. Therefore, it may indicate that a request has been made. A positive SR may indicate that the upper layer has triggered a scheduling request. A positive SR may be sent when the upper layer instructs to send a scheduling request. When the scheduling request bit indicates a negative SR, it may be referred to as a negative SR being sent. A negative SR indicates that a PUSCH (or UL-SCH) resource for the initial transmission has been sent to terminal device 1. Therefore, it may indicate that it has not been requested. A negative SR may indicate that the upper layer does not trigger a scheduling request. A negative SR may be sent when you do not instruct me to send an EST.

[0150] Channel status information is provided by the Channel Quality Indicator (CQI). Precoder Matrix Indicator (PMI), Rank Indicator It may include at least some or all of the 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 the precoder. RI is the transmit rank (or transmit layer). This is an indicator related to the number of [something].

[0151] Channel status information may be provided based at least on receiving one or more physical signals (e.g., one or more CSI-RS) used for channel measurement. Channel status information may be selected by terminal device 1 based at least on receiving one or more physical signals used for channel measurement. Channel measurement may include interference measurement.

[0152] PUCCH may support the PUCCH format. PUCCH may be a set of resource elements used to carry the PUCCH format. PUCCH may contain the PUCCH format. The PUCCH format may contain UCI.

[0153] PUSCH is used for uplink data (transport blocks) and / or uplink control. It may be used to transmit information. PUSCH is an uplink day corresponding to UL-SCH. PUSCH may be used to transmit uplink data (transport block) and / or uplink control information. It may be used to carry uplink control information. PUSCH is an uplink corresponding to UL-SCH It may be used to carry link data (transport blocks) and / or uplink control information. The uplink data (transport blocks) is located in PUSCH. This is also acceptable. Uplink data (transport block) corresponding to UL-SCH is sent to PUSCH. It may be placed there. Uplink control information may be placed in PUSCH. Terminal device 1 is uplink The base station device 3 may transmit a PUSCH containing the uplink data (transport block) and / or uplink control information. ) and / or PUSCH containing uplink control information may be received.

[0154] PRACH may be used to send a random access preamble. PRACH may be used to carry a random access preamble. Sequence x of PRACH u,v (n ) is x u,v (n) = (mod(n+C) v ,L RA )) may be defined by xu xu may be of the Zadoff-Chu (ZC) series. u =exp(-jpui(i+1) / L RA ) may be defined by j being the imaginary unit, and p being pi. v This corresponds to PRACH's cyclic shift. RA L corresponds to the length of PRACH. RA i can be 839, 139, or any other value. i is between 0 and L RA It is an integer in the range of -1. u is the sequence index of PRACH. Terminal device 1 may transmit PRACH. Base station device 3 may receive PRACH.

[0155] For a given PRACH opportunity, 64 random access preambles are defined. The dam access preamble is PRACH's cyclic shift C v It is specified, determined, given based at least on the series index u of PRACH.

[0156] Uplink physical signals may correspond to a set of resource elements. Uplink physical signals do not carry information generated in higher layers. Uplink physical signals may also be physical signals used within the uplink component carrier. Terminal device 1 may transmit uplink physical signals. Base station device 3 may receive uplink physical signals. Good. In a wireless communication system according to one embodiment, the uplink demodulation reference signal (UL DMRS), sounding reference signal (SRS), and uplink phase tracking reference signal (UL At least part or all of the PTRS may be used. SRS may be used for positioning.

[0157] The set of antenna ports for DMRS for PUSCH (DMRS associated with PUSCH, DMRS included in PUSCH, DMRS corresponding to PUSCH) is given based on the set of antenna ports for PUSCH. This is also possible. In other words, the set of DMRS antenna ports for PUSCH may be the same as the set of antenna ports for PUSCH.

[0158] The transmission of PUSCH and the transmission of DMRS for PUSCH are in one DCI format. It may be indicated or scheduled. PUSCH and the DMRS for PUSCH may be collectively referred to as PUSCH. Sending PUSCH may be sending PUSCH and the DMRS for PUSCH.

[0159] PUSCH may be estimated from the DMRS for that PUSCH. That is, the propagation path of PUSCH is , or it may be inferred from the DMRS for that PUSCH.

[0160] The set of antenna ports for DMRS for PUCCH (DMRS related to PUCCH, DMRS included in PUCCH, DMRS corresponding to PUCCH) may be the same as the set of antenna ports for PUCCH. stomach.

[0161] The transmission of PUCCH and the transmission of DMRS for PUCCH are in one DCI format. It may be indicated (triggered). The placement of PUCCH within the resource element. The arrangement of DMRS within the resource element for PUCCH may be provided by at least one PUCCH format. PUCCH and its DMRS may be collectively referred to as PUCCH. Sending PUCCH may be sending PUCCH and its DMRS.

[0162] The PUCCH may be estimated from the DMRS for that PUCCH. That is, the propagation path of the PUCCH may be estimated from the DMRS for that PUCCH.

[0163] The downlink physical channel may correspond to a set of resource elements that carry information resulting from the upper layer (information provided from the upper layer) and / or downlink control information. The downlink physical channel may be a physical channel used in a 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 an aspect of the present embodiment, at least a part or all of a physical broadcast channel (PBCH), a physical downlink control channel (PDCCH), and a physical downlink shared channel (PDSCH) may be used.

[0164] The PBCH may be used to transmit a master information block (MIB) and / or physical layer control information . The physical layer control information is a certain type of downlink control information. The PBCH may be sent to deliver the MIB and / or physical layer control information. The broadcast channel (BCH) may be mapped to the PBCH. The terminal device 1 may receive the PBCH [[ID=1,7]]The base station device 3 may transmit the PBCH. The physical layer control information may also be referred to as the PBCH payload and the PBCH payload regarding timing. The MIB may include one or multiple upper layer parameters.

[0165] The physical layer control information includes 8 bits. The physical layer control information may include at least a part or all of the following 0A to 0D. 0A is wireless frame information. 0B is semi-wireless frame information (semi-system frame information). 0C is the SS / PBCH block index​​ This is subcarrier information. 0D is subcarrier offset information.

[0166] Wireless frame information is used to specify the wireless frame transmitted by the PBCH (the wireless frame containing the slot from which the PBCH is transmitted). Wireless frame information is represented by 4 bits. Wireless frame information may also be represented by 4 bits of a wireless frame indicator. The wireless frame indicator may contain 10 bits. For example, the wireless frame indicator may be used to identify wireless frames from index 0 to index 1023.

[0167] Half-wireless frame information is used to specify whether the PBCH is transmitted in the first five subframes or the second five subframes within the wireless frame in which the PBCH is transmitted. Here, the half-wireless frame may be configured to contain five subframes. The half-wireless frame may consist of the first five subframes of the ten subframes contained in a single wireless frame. The half-wireless frame may consist of the last five subframes of the ten subframes contained in a single wireless frame.

[0168] SS / PBCH block index information is used to specify the SS / PBCH block index. SS / PBCH block index information may be represented by 3 bits. SS / PBCH block index information is from the SS / PBCH block index indicator. It may consist of 3 bits. The SS / PBCH block index indicator is 6 bits. It may include a block. The SS / PBCH block index indicator is index 0 or It is used to identify SS / PBCH blocks up to index 63 (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.). It's okay if it's done that way.

[0169] Subcarrier offset information is used to specify the subcarrier offset. Subcarrier offset information may also be used to specify the difference between the first subcarrier where the PBCH is located and the first subcarrier where the control resource set at index 0 is located.

[0170] A PDCCH may be used to transmit downlink control information (DCI). A PDCCH may be transmitted to deliver DCI. DCI may be mapped to a PDCCH. Terminal device 1 may receive a PDCCH containing DCI. Base station device 3 may transmit a PDCCH containing DCI.

[0171] DCI may be compatible with the DCI format. DCI may be included in the DCI format. DCI may be placed in each field of the DCI format.

[0172] The DCI formats are DCI format 0_0, DCI format 0_1, and DCI format 1_0. The uplink DCI format is a comprehensive designation for DCI format 1_1, DCI format 3_0, and DCI format 3_1, etc. The uplink DCI format is a comprehensive designation for DCI format 0_0, and DCI format 0_1, etc. The downlink DCI format is DCI format This is a comprehensive designation for Format 1_0 and DCI Format 1_1, etc. Link DCI format is for DCI format 3_0 and DCI format 3_1, etc. It is a comprehensive term.

[0173] PDSCH can be used to transmit one or more transport blocks. Good. PDSCH transmits one or more transport blocks corresponding to DL-SCH. It may be used for this purpose. PDSCH arranges one or more transport blocks. It may be used for transmission. PDSCH is one or more transistors corresponding to DL-SCH It may be used to deliver the transport block. One or more transport blocks may be located on one PDSCH. One or more to correspond to the DL-SCH The lanceport block may be placed in one PDSCH. Base station device 3 may transmit a PDSCH. Terminal device 1 may receive a PDSCH.

[0174] The downlink physical signal may correspond to a set of resource elements. The downlink physical signal does not have to carry information generated in the upper layer. The downlink physical signal may be a physical signal used in the downlink component carrier. The downlink physical signal may be transmitted by base station equipment 3. The downlink physical signal may be received by terminal equipment 1. In a wireless communication system in one form according to this embodiment, the synchronization signal (SS), downlink demodulation reference signal (DL DMRS), and channel state information reference signal are used. Signal (CSI-RS), and Downlink Phase Tracking Reference Signal (DL PTRS), Positioning At least part or all of the Positioning Reference Signal (PRS) It may be used.

[0175] The PRS may be referred to as DL PRS. The PRS may be used to measure the position of the terminal device 1 in positioning via the Uu interface. For example, the PRS may be used in positioning methods such as DL-TDOA, DL-AoD, and Multi-RTT.

[0176] The synchronization signal may be used for at least the terminal device 1 to synchronize in the frequency domain and / or the time domain for the downlink. The synchronization signal is a general term for the Primary Synchronization Signal (PSS) and the Secondary Synchronization Signal (SSS).

[0177] The sidelink physical channel may correspond to a set of resource elements that carry information generated in the upper layer. The sidelink physical channel is a physical channel used in the sidelink. The sidelink physical channel may be transmitted by the radio transceiver unit 10. The sidelink physical channel may be received by the radio transceiver unit 10. In the wireless communication system according to an aspect of the present embodiment, at least some or all of the following sidelink physical channels are used. ·PSBCH (Physical Sidelink Broadcast CHannel) ·PSCCH (Physical Sidelink Control CHannel) ·PSSCH (Physical Sidelink Shared CHannel) ·PSFCH (Physical Sidelink Feedback CHannel)

[0178] The PSBCH is transmitted to transmit the DFN (Direct Frame Number), TDD UL-DL configuration, slot index (the slot index of the slot in which the PSBCH is located), and the in-coverage indicator - data (an identifier indicating whether the transmitting terminal device 1 is located within the coverage of the base station device 3).

[0179] PSCCH transmits Sidelink Control Information (SCI). It is used at least for the following purposes. Side link control information may be placed in the PSCCH. Terminal device 1 may receive PSCCH containing side link control information. 1 may transmit a PSCCH containing sidelink control information.

[0180] Sidelink control information is transmitted and received in Sidelink Control Information Format (SCI format). The SCI transmitted and received via PSCCH is 1 st This is called stage SCI. The SCI transmitted and received by PSSCH is 2 nd This is called stage SCI. 1 st Even if the stage SCI format includes SCI format 1-A Good. SCI format 1-A is PSSCH and 2 nd Used for scheduling stage SCI. SCI format 1-A has a field indicating priority, a field indicating frequency resource allocation, a field indicating time resource allocation, a field indicating resource reservation interval, a field indicating DMRS pattern, and 2 nd stage SCI format(SCI format 2-A, SCI format 2-B, SCI format 2-C) field, beta offset (2 nd Fields indicating parameters used to determine the resource amount of the stage SCI, fields indicating the number of DMRS ports, fields indicating the MCS, fields indicating the MCS table, and PSFCH overhead indication. Includes fields containing, a Reserved field, and information indicating whether or not collision information is received.

[0181] 2 ndStage SCI is used for PSSCH decoding. SCI format 2-A is HARQ process number Number, NDI, RV (Redundancy version), Source ID, Destination ID, HARQ Feedback Enable / Disable Indicator, Cast Type Indicator (Unicast) Includes information on broadcasts, groupcasts, and CSI requests. SCI format 2-B includes HARQ process number, NDI, RV, Source ID, Destination ID, and HARQ feedback. This includes enable / disable indicators, Zone ID, and communication range request information. SCI format 2-C includes HARQ process number, NDI, RV, Source ID, Destination ID, HARQ feedback enable / disable indicators, CSI request information, and Providing / Requesting indicator.

[0182] PSSCH is Sidelink data (Sidelink Transport Block, Sidelink PDU), 2 nd Stage SCI may be transmitted to transmit. PSSCH is side link data, 2 nd It may be used to transmit stage SCI. Terminal device 1 is side link day Ta, 2 nd The PSSCH on which the stage SCI is located may be transmitted. Terminal device 1 transmits side link data, 2 nd A PSSCH with a stage SCI installed may be received.

[0183] PSFCH is used to transmit HARQ-ACK information corresponding to PSSCH reception. Terminal device 1 transmits a PSFCH containing HARQ-ACK information. Receives the PSFCH.

[0184] The sidelink physical signal may correspond to a set of resource elements. The sidelink physical signal does not have to be used to transmit information generated in the upper layer. The sidelink physical signal may be used to transmit information generated in the physical layer. The wireless transceiver 10 may transmit the sidelink physical signal. The wireless transceiver 10 may receive the sidelink physical signal. In the sidelink of a wireless communication system according to one aspect of this embodiment, at least some or all of the following sidelink physical signals may be used: • Sidelink Synchronization Signal (S-SS) • Sidelink DMRS • Sidelink CSI-RS • Sidelink PT-RS • Sidelink PRS (SL-PRS)

[0185] The sidelink synchronization signal is used by terminal device 1 to synchronize the sidelink in the frequency domain and / or time domain. The sidelink synchronization signal is a general term for S-PSS (Sidelink Primary Synchronization Signal) and S-SSS (Sidelink Secondary Synchronization Signal).

[0186] Sidelink DMRS is for PSBCH, DMRS for PSCCH, and PSSCH. This is a general term for DMRS. The time-domain pattern of DMRS for PSSCH is transmitted to terminal device 1 on the transmitting side. Therefore, it is selected. The time-domain patterns of the selection candidates are configured for each resource pool.

[0187] The sidelink CSI-RS is a reference signal used for channel measurement of the sidelink. It consists of time resource allocation (symbol placement), frequency resource allocation, number of antenna ports, and number of layers. Terminal device 1 reports channel status information measured based on the sidelink CSI-RS using MAC CE.

[0188] Sidelink PT-RS may be supported only in the high-frequency band (FR2). The time density and frequency density of sidelink PT-RS are configured for each resource pool.

[0189] The side link PRS measures the position of terminal device 1 in side link positioning. This is a reference signal used for that purpose. Details about the sidelink PRS will be discussed later.

[0190] A signal for AGC (Access Gain Control) may be used. The AGC signal is used in the slot ( It may be placed in the first OFDM symbol of the first slot (second slot).

[0191] Terminal device 1 may report the sidelink HARA-ACK information received from the transmitting terminal device 1 to base station device 3 using the uplink PUCCH. Semi-static HARQ-ACK codebook and Dynamic HARQ-ACK codebook may be used.

[0192] The base station device 3 schedules sidelinks to the terminal device 1 using the DCI format. Schedule information may be notified. DCI format 3_0 is the schedule for PSCCH and PSSCH. Used for grading. DCI format 3_0 includes some or all of the following information. It is composed. • Resource pool index • Time gap • HARQ process number NDI • Subchannel assignment information • SCI format 1-A field • Timing indicator that provides feedback of PSSCH HARQ-ACK for PSFCH reception • PUCCH resource indicator • Configuration Index • Side link assignment index counter

[0193] The resource pool index indicates the resource pool used for scheduled PSCCH and PSSCH. The time gap is calculated from the time DCI format 3_0 is received until the sidelining. This indicates the time until transmission. The subchannel allocation information indicates the subchannels used for the scheduled PSCCH and PSSCH. The SCI format 1-A field indicates the frequency resource allocation and time resource allocation information for SCI format 1-A that terminal device 1 transmits on the PSCCH. Includes information. The timing indicator that feeds back the HARQ-ACK of the PSSCH corresponding to PSFCH reception is the HARQ-ACK information acquired when terminal device 1 receives PSFCH from the other terminal device 1. This indicates the timing for feedback using PUCCH. The PUCCH resource indicator shows the PUCCH resources used for feedback of HARQ-ACK information obtained by receiving PSFCH. The configuration index shows the configuration of the sidelink configured grant. The sidelink allocation index counter shows the number of sidelink allocations that base station device 3 has allocated to terminal device 1 within a certain interval.

[0194] Before transmitting a signal (channel access), terminal device 1 performs channel sensing (carrier sense) to check whether other devices (e.g., base station equipment, terminal equipment, WiFi terminal equipment, WiFi access point, etc.) are transmitting. After the previous signal transmission, terminal device 1 randomly sets the backoff counter value within the range of the contention window size (CWS). The terminal device 1 waits until it confirms that the channel (LBT subband, RB set; for example, a bandwidth of 20 MHz) is idle, and performs carrier sensing at each sensing slot time. If the channel is idle, the terminal device 1 sequentially decreases a randomly determined counter value within the contention window size (CWS), and after the counter value reaches 0, it gains access to the channel and transmits a signal. The terminal device 1, which uses HARQ-ACK feedback for communication, updates the contention window size after the signal transmission is complete based on the HARQ-ACK feedback received from the terminal device 1 that received the signal. If the status of the HARQ-ACK is ACK, the contention window size Set the size to the minimum value. If the HARQ-ACK status is NACK, terminal device 1 sets the contention window size to the next largest value. If the contention window size reaches the maximum configurable value, terminal device 1 continues to use the maximum value even if the HARQ-ACK status is NACK.

[0195] Terminal device 1 will initiate a transmission opportunity if the LBT result is idle. :TxOP (Telegraph Operation Program) acquires channel occupancy and attempts to transmit, but does not transmit if the LBT result is busy (LBT-busy). The duration of the transmission opportunity is called Channel Occupancy Time (COT). COT is the total time length of all transmissions within the transmission opportunity and the gap within a predetermined time, and may be less than or equal to the Maximum COT (MCOT). MCOT is determined based on the channel access priority class. The channel access priority class may be associated with the contention window size.

[0196] Channel access priority classes are defined and used. For example, four channel access priority classes (Channel Access Priority Class 1, Channel Access Priority Class 2, Channel Access Priority Class 3, and Channel Access Priority Class 4) are defined and used. In Channel Access Priority Class 1, the minimum contention window size is 3 slots, the maximum contention window size is 7 slots, and the allowed contention window is... There are two dow sizes: {3 slots, 7 slots}. In channel access priority class 2, the minimum contention window size is 7 slots, and the maximum contention is The contention window size is 15 slots, and the allowed contention window sizes are {7 slots, 15 slots}. Channel access priority class 3. The minimum contention window size is 15 slots, the maximum contention window size is 1023 slots, and the allowed contention window sizes are {15 slots, 31 slots, 63 slots, 127 slots, 255 slots, 511 slots, 1023 slots}. These are the seven. In Channel Access Priority Class 4, the minimum contention is The window size is 15 slots, the maximum contention window size is 1023 slots, and the allowed contention window sizes are {15 slots, 31 slots, 63 slots, 127 slots, 255 slots, 511 slots, 1023 slots}, which is 7 in total. Note that the contention window size may also represent the number of slots counted.

[0197] Terminal device 1, if it determines that the channel is busy based on carrier sensing during the sensing slot time, senses whether the channel is idle in the defer interval. The defer interval consists of 16us and multiple sensing slots. The number of sensing slots that make up the defer interval is... It depends on the channel access priority class. In channel access priority class 1, about two sensing slots are configured in the defer interval. In quality class 2, approximately two sensing slots are configured in the defer section. In Access Priority Class 3, approximately three sensing slots are configured in the defer section. In channel access priority class 4, there are about 7 sensing slots. The system is configured in a fer interval. If terminal device 1 determines that the channel is busy in a defer interval, it then determines whether the channel is idle in a new defer interval. If terminal device 1 determines that the channel is idle in a defer interval, it decrements a counter value set based on the contention window size and continues to perform carrier sensing at each sensing slot time to determine whether the channel is idle.

[0198] For example, a maximum COT of 2ms is used for channel access priority class 1. For example, a maximum COT of 3ms is used for channel access priority class 2. For example, a maximum COT of 4ms is used for channel access priority class 2. For example, a maximum COT of 6ms is used for channel access priority class 3. It is possible. For example, for channel access priority class 3, the maximum COT is 8ms. For example, a maximum COT of 10ms is used for channel access priority class 3. For example, a maximum COT of 6ms is used for channel access priority class 4. For example, a maximum COT of 8ms is used for channel access priority class 4. For example, a maximum COT of 10ms is used for channel access priority class 4. Large COT is used.

[0199] In Sidelink Resource Allocation Mode 2, the number of resources reserved is RRC signal It is set or pre-configured in the setting. It is a resource in which the second or third unit of resource other than the first unit of resource in a series of resources is reserved. The interval between the first unit of resource and the second unit of resource (an interval in milliseconds), and the interval between the second unit of resource and the third unit of resource are set or pre-configured by RRC signaling.

[0200] In sidelink resource allocation mode 2, if terminal device 1 detects that the RSRP of a PSSCH or PSCCH transmitted by another terminal device 1 is greater than the set value, terminal device 1 excludes the reserved resource corresponding to that PSSCH or PSCCH from the resources that terminal device 1 selects and reserves.

[0201] Figure 7 shows an example of the configuration of an SS / PBCH block. In Figure 7, the horizontal axis represents the time domain (OFDM symbol index l). sym The graph shows the frequency domain on the vertical axis. The block in the upper right diagonal line of Figure 7 shows the set of resource elements for PSS. The block in the upper left diagonal line of Figure 7 shows the set of resource elements for PBCH and PBCH. This shows a set of resource elements for DMRS (DMRS related to PBCH, DMRS contained within PBCH, and DMRS corresponding to PBCH).

[0202] As shown in Figure 7, the SS / PBCH block includes PSS, SSS, and PBCH. The SS / PBCH block contains four consecutive OFDM symbols. The SS / PBCH block has 240 sub-keys. Includes the category. PSS is the 57th to 183rd subcategory in the first OFDM symbol. It is assigned to the rear. The values ​​of the 1st to 56th subcarriers in the first OFDM symbol may be set to 0. The values ​​of the 184th to 240th subcarriers in the first OFDM symbol may be set to 0. The values ​​of the 49th to 56th subcarriers in the third OFDM symbol may be set to 0. The values ​​of the 184th to 192nd subcarriers in the third OFDM symbol may be set to 0. In the 2nd OFDM symbol, PBCH is assigned to subcarriers that are not assigned a DMRS for PBCH in the 1st to 240th subcarriers. In the 3rd OFDM symbol, PBCH is assigned to subcarriers that are not assigned a DMRS for PBCH in the 1st to 48th subcarriers. In the 3rd OFDM symbol, PBCH is assigned to subcarriers that are not assigned a DMRS for PBCH in the 193rd to 240th subcarriers. It is assigned to a subcarrier that is not assigned. In the 4th OFDM symbol, in subcarriers 1 through 240, PBCH is assigned to a subcarrier to which DMRS for PBCH is not assigned.

[0203] Antenna ports for PSS, SSS, PBCH, and DMRS for PBCH in one SS / PBCH. They may be the same.

[0204] The PBCH may be inferred from the DMRS for that PBCH. An SS / PBCH block is transmitted within the same slot, containing two symbols for the DMRS for a given antenna port: a symbol for the PBCH at that antenna port and a symbol for the DMRS at that antenna port. Therefore, the channel on which the former symbol is transmitted can be inferred from the channel on which the latter symbol is transmitted, only if they are contained within the same SS / PBCH block index.

[0205] DL DMRS encompasses DMRS for PBCH, DMRS for PDSCH, and DMRS for PDCCH. It is a general designation.

[0206] The set of antenna ports for DMRS for PDSCH (DMRS related to PDSCH, DMRS included in PDSCH, DMRS corresponding to PDSCH) is based on the set of antenna ports for PDSCH. The set of antenna ports for DMRS for PDSCH may be the same as the set of antenna ports for PDSCH.

[0207] PDSCH transmission and DMRS transmission for PDSCH are directed by a single DCI format. It may be (scheduled). PDSCH and DMRS for PDSCH, together PDSCH and It may be referred to as such. A PDSCH transmission may also be a PDSCH transmission and a DMRS transmission for that PDSCH. stomach.

[0208] PDSCH may be estimated from the DMRS for that PDSCH. The channel on which the former symbol is transmitted will transmit the latter symbol only if the two symbols, a symbol for PDSCH and a symbol for DMRS on a given antenna port, are within the same resource, the same slot, and the same pre-recording resource group (PRG) in which the PDSCH is scheduled. It can be estimated from the channels being analyzed.

[0209] The antenna port for a DMRS for a PDCCH (DMRS associated with a PDCCH, DMRS included in a PDCCH, or DMRS corresponding to a PDCCH) may be the same as the antenna port for that PDCCH.

[0210] PDCCH may be estimated from the DMRS for that PDCCH. Two symbols, one for PDCCH on a certain antenna port and one for DMRS on the same antenna port, are used by the terminal device for the same recording. Resources that can be assumed to be included (i.e., resources within a single REG bundle) Only in this case can the channel on which the former symbol is transmitted be inferred from the channel on which the latter symbol is transmitted.

[0211] Broadcast channel (BCH), uplink shared channel (UL-SCH), and downlink shared channel The channel (DL-SCH) is a transport channel. It is a channel used in the MAC layer. A channel is called a transport channel. Transport channels used in the MAC layer A NEL unit is also called a transport block or MAC protocol data unit (MAC PDU). In the MAC layer, HARQ control is performed for each transport block. A transport block is a unit of data delivered to the physical layer by the MAC layer. Yes. In the physical layer, transport blocks are mapped to codewords, and modulation is performed for each codeword.

[0212] UL-SCH and DL-SCH are provided to each serving cell. BCH is provided to PCell. BCH does not necessarily have to be provided to PSCell and SCell.

[0213] The Broadcast Control Channel (BCCH), Common Control Channel (CCCH), and Individual Control Channel (DCCH) are logical channels. The BCCH delivers MIB and system information. This is an RRC layer channel used for that purpose. CCCH may be used for terminal device 1 that is not connected by RRC. DCCH sends individual RRC messages to at least terminal device 1. It may be used for transmission. DCCH is in RRC-connected mode. It may be used for terminal device 1.

[0214] An RRC message contains one or more RRC parameters (information elements, higher-level parameters). For example, an RRC message may contain an MIB. For example, an RRC message is System information (System Information Block (SIB), MIB) may be included. SIBs are various types This is a general term for SIBs of a type (e.g., SIB1, SIB2, etc.). For example, an RRC message may include a message corresponding to CCCH. For example, an RRC message may include a message corresponding to DCCH. Sage may be included. RRC messages are divided into shared RRC messages and individual RRC messages. It is a general term for [something].

[0215] BCCH in the logical channel is matched to BCH or DL-SCH in the transport channel. It may be done as follows: CCCH in the logical channel may be mapped to DL-SCH or UL-SCH in the transport channel. DCCH in the logical channel may be mapped to DL-SCH or UL-SCH in the transport channel.

[0216] Even if UL-SCH in the transport channel is mapped to PUSCH in the physical channel Good. DL-SCH in the transport channel is mapped to PDSCH in the physical channel. This is also possible. The BCH in the transport channel is mapped to the PBCH in the physical channel. That's fine.

[0217] Higher-layer parameters are parameters included in RRC messages or MAC control elements (MAC CEs). These higher-layer parameters correspond to MIBs, system information, and CCCH messages. This is a general term for the message corresponding to DCCH and the information contained in MAC CE. If higher-layer parameters are included in the RRC message, the higher-layer parameters are referred to as RRC parameters or RRC It may also be called configuration.

[0218] Higher-level parameters may be cell-specific parameters or UE-specific parameters. Cell-specific parameters are parameters that include common configurations within a cell. UE-specific parameters are parameters that include configurations that may be set differently for each UE.

[0219] The base station equipment may instruct changes to cell-specific parameters through reconfiguration with random access. The UE may change cell-specific parameters before triggering random access. The base station equipment may instruct changes to UE-specific parameters through reconfiguration with or without random access. The UE may change UE-specific parameters before or after random access.

[0220] The procedures performed by terminal device 1 include at least some or all of the following 5A to 5C. 5A is a cell search. 5B is random access. Yes, it exists. 5C is for data communication.

[0221] Cell search is a procedure used by terminal device 1 to synchronize with a cell in the time domain and / or frequency domain, and to detect its physical cell identity. Terminal device 1 may detect the physical cell identity by synchronizing with the cell in the time domain and / or frequency domain through cell search.

[0222] The PSS series is determined based on at least the physical cell identifier. The SSS series is determined based on at least the physical cell identifier.

[0223] An SS / PBCH block candidate specifies a resource where an SS / PBCH block transmission may exist. An SS / PBCH block may be transmitted in the resource designated as an SS / PBCH block candidate. Base station device 3 may transmit an SS / PBCH block in an SS / PBCH block candidate. Terminal device 1 may receive (detect) an SS / PBCH block in an SS / PBCH block candidate.

[0224] A set of SS / PBCH block candidates within a semi-wireless frame is also called an SS burst set. The SS burst set is also called the transmit window, SS transmit window, or Discovery Reference Signal (DRS) transmit window. The SS burst set is a general term that includes at least a first SS burst set and a second SS burst set.

[0225] The base station device 3 transmits SS / PBCH blocks of one or more indices in a predetermined cycle. The terminal device 1 may detect at least one SS / PBCH flock from the SS / PBCH blocks of one or more indices. The terminal device 1 may attempt to decode the PBCH contained in the SS / PBCH block.

[0226] Random access is a procedure that includes at least some or all of message 1, message 2, message 3, and message 4.

[0227] Message 1 is the procedure by which terminal device 1 sends PRACH. Terminal device 1 is a cell service Based at least on the index of SS / PBCH block candidates detected based on the index, Send a PRACH in one PRACH opportunity selected from one or more PRACH opportunities. do.

[0228] Message 2 is a procedure in which terminal device 1 attempts to detect DCI format 1_0 with periodic redundancy check (CRC) scrambled by random access wireless network temporary identifiers (RA-RNTI). Terminal device 1, in the search space set, attempts to detect DCI format 1_0. You may attempt to detect mat 1_0.

[0229] Message 3 (Msg3) sends a PUSCH scheduled by a random access response grant contained in DCI format 1_0 detected in the Message 2 procedure. This is the procedure for granting access. Random access response grants are directed by MAC CE included in the PDSCH scheduled according to DCI format 1_0.

[0230] PUSCH, scheduled based on random access response grants, The message is either 3PUSCH or PUSCH. Message 3PUSCH includes the contention resolution identifier MAC CE. The contention resolution identifier MAC CE is the contention resolution identifier Includes.

[0231] The retransmission of message 3PUSCH is a CRC scrambled by temporary C-RNTI (TC-RNTI). It is scheduled by DCI format 0_0, which includes [a specific format].

[0232] Message 4 is a procedure that attempts to detect DCI format 1_0 with a CRC scrambled by either C-RNTI or TC-RNTI. Terminal device 1 receives a PDSCH scheduled based on DCI format 1_0. The PDSCH includes a collision resolution identifier.

[0233] Data communication is a general term encompassing both downlink communication and uplink communication.

[0234] In data communication, terminal device 1 detects PDCCH in a resource identified based on at least one or both of the control resource set and the search base set. Attempt (Attempt to monitor PDCCH, or monitor PDCCH). This means, "Terminal device 1 attempts to detect PDCCH in the control resource set," "Terminal device 1 "Attempt to detect PDCCH in the search space set," "Terminal device 1 is a control resource set "In the search space set, we attempt to detect PDCCH candidates." "Terminal device 1 is in the search space set." "The terminal device 1 attempts to detect a PDCCH candidate," "The terminal device 1 attempts to detect the DCI format in the control resource set," or "The terminal device 1 attempts to detect the DCI format in the search space set." It is also called "attempting to detect the 'fault'." PDCCH monitoring involves DCI detection in PDCCH. This may be equivalent to format monitoring.

[0235] A control resource set is a set of resources defined by the number of resource blocks and a predetermined number of OFDM symbols within the slots.

[0236] The set of reloads for the control resource set may be specified by a higher-level parameter. The number of OFDM symbols included in the control resource set may also be specified by a higher-level parameter.

[0237] PDCCH may also be referred to as PDCCH candidate.

[0238] A search space set is defined as a set of PDCCH candidates. The search space may be a Common Search Space (CSS) set or a UE-Specific Search Space (USS) set.

[0239] The CSS set is a collective term for the Type 0 PDCCH Common Search Space Set, Type 0a PDCCH Common Search Space Set, Type 1 PDCCH Common Search Space Set, Type 2 PDCCH Common Search Space Set, and Type 3 PDCCH Common Search Space Set. The set is also called the UE-specific PDCCH search space set.

[0240] Type 0 PDCCH common search space set is a common search space set with index 0. It can be used as a set. Type 0 PDCCH Common Search Space Set is an input It may also be a common search space set of DEX 0.

[0241] A search space set is associated with (included in, corresponds to) a control resource set. The index of the control resource set associated with the search space set may be indicated by a higher-level parameter.

[0242] For the search space set, some or all of 6A through 6C may be indicated by at least the upper layer parameters. 6A is the PDCCH monitoring period. 6B is the slot. This is the internal PDCCH monitoring pattern. 6C is the PDCCH monitoring offset.

[0243] The monitoring opportunities for a set of search spaces are associated with the set of search spaces. The first OFDM symbol in the control resource set may correspond to one or more OFDM symbols to which it is assigned.

[0244] A monitoring opportunity for a search space set may correspond to a resource identified by the first OFDM symbol in the control resource set associated with the search space set. A monitoring opportunity for a search space set may include at least some of the following: PDCCH monitoring period, PDCCH monitoring pattern within a slot, and PDCCH monitoring offset. It is given based on everything.

[0245] Figure 8 shows an example of a monitoring opportunity for a search space set according to one aspect of this embodiment. In Figure 8, search space set 91 and search space set 92 are sets of primary cells 301, search space set 93 is a set of secondary cells 302, and search space set 94 is a set of secondary cells 303.

[0246] In Figure 8, the blocks painted white are search space set 91, the upper right diagonal line is search space set 92, and the upper left diagonal line is This is a painted search space set 93, and a black painted search space set 94.

[0247] In Figure 8, the PDCCH monitoring period for search space set 91 is set to 1 slot, the PDCCH monitoring offset for search space set 91 is set to 0 slots, and the PDCCH monitoring pattern for search space set 91 is set to [1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0]. That is, the monitoring opportunities for search space set 91 correspond to the first OFDM symbol (OFDM symbol #0) and the eighth OFDM symbol (OFDM symbol #7) in each slot.

[0248] In Figure 8, the PDCCH monitoring period for search space set 92 is 2 slots, the PDCCH monitoring offset for search space set 92 is 0 slots, and the PDCCH monitoring pattern for search space set 92 is [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, It is set to [0, 0, 0]. In other words, the monitoring opportunity for search space set 92 is This corresponds to the first OFDM symbol (OFDM symbol #0) in an even-numbered slot.

[0249] In Figure 8, the PDCCH monitoring period for search space set 93 is 2 slots, the PDCCH monitoring offset for search space set 93 is 0 slots, and the PDCCH monitoring pattern for search space set 93 is [0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, It is set to [0, 0, 0]. In other words, the monitoring opportunity for search space set 93 is This corresponds to the 8th OFDM symbol (OFDM symbol #7) in an even-numbered slot.

[0250] In Figure 8, the PDCCH monitoring period for search space set 94 is 2 slots, the PDCCH monitoring offset for search space set 94 is 1 slot, and the PDCCH monitoring pattern for search space set 94 is [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, It is set to [0, 0, 0]. In other words, the monitoring opportunity for search space set 94 is, This corresponds to the first OFDM symbol (OFDM symbol #0) in an odd-numbered slot.

[0251] The Type-0 PDCCH common search space set may use a DCI format that includes at least a Cyclic Redundancy Check (CRC) sequence scrambled by SI-RNTI (System Information-Radio Network Temporary Identifier).

[0252] The Type-0a PDCCH common search space set may use a DCI format that includes at least a CRC sequence scrambled by SI-RNTI.

[0253] The Type-1 PDCCH Common Search Space Set includes at least RA-RNTI (Random Access-Radio). A DCI format may be used that includes a CRC sequence scrambled by a Network Temporary Identifier (CRC) or a CRC sequence scrambled by a TC-RNTI (Temporary Cell-Radio Network Temporary Identifier).

[0254] The Type-2 PDCCH Common Search Space Set is P-RNTI (Paging-Radio Network Temporary The DCI format, which includes a CRC sequence scrambled by an Identifier, is used. You can stay.

[0255] The Type-3 PDCCH common search space set uses the DCI format, which includes a CRC sequence scrambled by C-RNTI (Cell-Radio Network Temporary Identifier). It's okay if it's done that way.

[0256] UE-specific search space sets include CRCs scrambled by at least C-RNTI. A DCI format with a sequence may be used.

[0257] During downlink communication, terminal device 1 detects the downlink DCI format. The detected downlink DCI format will be used for resource allocation in PDSCH at least. The detected downlink DCI format may also be referred to as the downlink allocation. Terminal device 1 attempts to receive the PDSCH. Based on the PUCCH resource indicated based on the detected downlink DCI format, it receives the HARQ-ACK (included in the PDSCH) corresponding to the PDSCH. The base station device 3 may be notified of a HARQ-ACK corresponding to the transport block.

[0258] In uplink communication, terminal device 1 may detect the uplink DCI format. The detected uplink DCI format will be used for resource allocation, at least for PUSCH.

[0259] PUSCH transmissions may be dynamically scheduled by DCI UL grants, or they may correspond to configured grant Type 1 or grant Type 2. Configured grant Type 1 PUSCH transmissions are semi-statically configured to operate upon receipt of higher-level parameters of configuredGrantConfig, including rrc-ConfiguredUplinkGrant, without detection of DCI UL grants. Configured grant Type 2 PUSCH transmissions operate after receiving higher-level parameters of configuredGrantConfig, including rrc-ConfiguredUplinkGrant, to these procedures. Therefore, a valid activated DCI UL grant is scheduled quasi-statically. If configuredGrantConfigToAddModList is set, the set grant Type1, and Alternatively, the configured grant Type 2 may become active simultaneously with the valid BWP of the serving cell.

[0260] Figure 9 shows the procedure for sidelink RRC reconfiguration. In Figure 9, the purpose of this procedure is to change the PC5-RRC connection, for example This involves establishing / modifying / releasing the side link DRB, and measuring and reporting the NR side link. This involves (re)setting the sidelink CSI-RS resources and CSI reporting latency bound. Furthermore, the procedure in Figure 9 involves measuring the sidelink positioning and... This may involve (re)configuring the port or (re)configuring the SL-PRS resource.

[0261] In S901 in Figure 9, the UE sends the RRCReconfigurationSidelink message to another UE. I believe. In Figure 9A, if the other UE that received S901 successfully reconfigured the PC5-RRC, , send RRCReconfigurationCompleteSidelink (S902). When the UE receives RRCReconfigurationCompleteSidelink, it will use the corresponding RRCReconfigurationSidelink message. You may consider applying the settings. In Figure 9B, other UEs that receive S901 are PC 5. If RRC reconfiguration fails, send RRCReconfigurationfailureSidelink (S90 3).

[0262] Figure 9 is used as the procedure for connecting PC5 in the case of side-link positioning. This may also be done. In Figure 9, when performing side link positioning, Tx UE(SL-PRS) The trusting UE may send an RRCReconfigurationSidelink. When the Tx UE receives an RRCReconfigurationCompleteSidelink, it will include the corresponding RRCReconfigurationSidelink message in the message. You may consider applying the settings. Tx UE is RRCReconfigurationCompleteSidelink If this is received, it may be determined that there is a PC5 connection with the UE that sent RRCReconfigurationCompleteSidelink. On the other hand, if the Tx UE does not receive RRCReconfigurationCompleteSidelink In such cases, it may be determined that there is no PC5 connection with the relevant UE. For example, if the Tx UE receives RRCReconfigurationfailureSidelink, receives no response to the message, and the procedure for establishing a PC5 connection has not been initiated, the Tx UE may determine that there is no PC5 connection.

[0263] Note that the procedure for connecting PC5 in the case of side-link positioning is limited to that shown in Figure 9. Tx UE and other UEs connect side links to initiate side link positioning. It may be a subsequent procedure. For example, it is not limited to the message in Figure 9, but may be any other message for side link positioning.

[0264] Here, the operation of sidelink positioning according to this embodiment will be described. Sidelink positioning may be performed by combining a part of the processing in sidelink communication described above with the sidelink positioning operation described below. In this embodiment, the terminal device 1 that transmits SL-PRS is called Tx UE, and the terminal device 1 that receives the signal transmitted from Tx UE is called Rx UE. Rx UE performs sidelink positioning with Tx UE using the SL-PRS received from Tx UE.

[0265] Furthermore, positioning using both the Uu interface and the PC5 interface is If this is done, the processing between the base station equipment and the terminal equipment may use the processing for the uplink and downlink described above. For example, terminal equipment 1 uses the PC5 interface for sidelink In addition to in-line positioning, positioning can be performed using PRS via the Uu interface. You may go.

[0266] SL-PRS (SideLink-Positioning Reference Signal) is a sidelink positioning signal. In this context, it is a reference signal used to measure the position of terminal device 1. SL-PRS is included in the sidelink physical signal. The wireless transceiver 10 (or wireless transmitter 10a) may transmit the SL-PRS included in the sidelink physical signal. The wireless transceiver 10 (or wireless receiver 10b) may receive the SL-PRS included in the sidelink physical signal. SL-PRS may be mapped in slot units within the resource pool. The source may also be called an SL-PRS resource. The SL-PRS resource does not have to contain AGC symbols and GAP symbols. The SL-PRS resource ID may be given as a higher-layer parameter, set in the LMF, pre-configured in the terminal device, or set by the terminal device. It may be determined.

[0267] The SL-PRS sequence may be generated using a pseudo-random sequence. The pseudo-random sequence includes at least the slot number, symbol number, and SL-PRS sequence ID. It may be initialized using . The SL-PRS sequence ID may be given by a higher layer parameter, set in the LMF, or pre-set in the terminal device ( For example, Tx UE) may be calculated.

[0268] The resource pool applied to sidelink positioning may be a dedicated resource pool and / or a shared resource pool. Note that the configurations of the dedicated resource pool and the shared resource pool may differ.

[0269] SL-PRS may be mapped to an SL-PRS resource within a slot. SL-PRS may be mapped to a resource element within an SL-PRS resource based on the number of symbols in the SL-PRS, the symbol offset of the SL-PRS, the comb size, the resource element offset (RE-offset), etc. stomach.

[0270] The number of SL-PRS symbols is the number of SL-PRS mapped in the symbol direction. For example, the number of SL-PRS symbols may be 1, 2, 4, 6, 8, or some or all of 12. Alternatively, the number of SL-PRS symbols may be set by a combination of the number of SL-PRS symbols and the Comb size.

[0271] The symbol offset of an SL-PRS is an offset that indicates the position of the first symbol to which the SL-PRS is mapped within the slot. For example, the symbol offset of an SL-PRS may be an offset from the first symbol number in the resource pool to which the SL-PRS is mapped. For example, the symbol offset of an SL-PRS may be some or all of the values ​​from 0 to 12. For example, the symbol offset of an SL-PRS is 1 st Even if the number of symbols in stage SCI good.

[0272] The Comb size is the frequency interval to which the SL-PRS is mapped. For example, the Comb size may be part or all of 1, 2, 4, 6, 8, or 12.

[0273] The resource element offset is an offset that indicates the frequency-direction position to which the SL-PRS is mapped. The resource element offset may be a positive integer less than the comb size. For example, if the comb size is 4, the resource element offsets are 0, 1, 2, and 3.

[0274] The symbols of SL-PRS resources within a slot may be consecutive symbols. The symbols of SL-PRS resources within a slot may be non-contiguous symbols.

[0275] Positioning methods used in sidelink positioning include SL-TDOA (SL Time Difference Of Arrival), SL-AoA (SL Angle of Departure), SL-AoD (SL Angle of Arrival), and Multi RTT (Multi Round Trip Time). The position information of terminal device 1 is calculated using SL-PRS received by the wireless receiver 10b. The position information of terminal device 1 may be calculated by terminal device 1, or it may be calculated in the upper layers and / or LMF of terminal device 1. stomach.

[0276] Figure 10 shows an example of an SL-PRS configuration table according to one aspect of this embodiment. The SL-PRS configuration table consists of a parameter set for configuring SL-PRS and an SL-PRS configuration index. The parameter set for configuring SL-PRS may be some or all of the number of SL-PRS symbols, the symbol offset of SL-PRS, the comb size, and the resource element offset. The SL-PRS configuration index is used to configure SL-PRS. This is the index of the parameter set. For example, if the SL-PRS configuration index is 1 In this case, the number of SL-PRS symbols is 4, the symbol offset is 6, the comb size is 2, and the resource element offset is 1. Figure 10 shows the SL-PRS configuration index from 0 to X. This is an example.

[0277] The parameter sets included in the SL-PRS configuration table are not limited to those shown in Figure 10. For example, the combination of the number of SL-PRS symbols and the comb size may be treated as a single parameter. For example, the SL-PRS configuration table does not necessarily have to include the symbol offset for SL-PRS. For example, Figure 10 does not show all possible combinations of parameter set values ​​for configuring SL-PRS. It may also be a combination of some values. For example, the SL-PRS configuration table may only contain the comb size. For example, if the only parameter included in the SL-PRS configuration table is the comb size, the comb size may be associated with the SL-PRS configuration index, or the SL-PRS configuration index may not be set.

[0278] In Figure 10, the SL-PRS configuration table may be different for the Dedicated resource pool and the Shared resource pool. Furthermore, the SL-PRS configuration index may have some or all of the pre-configured settings set on the terminal device assigned to the lowest SL-PRS configuration index number. For example, in Figure 10... Furthermore, an SL-PRS configuration index of 0 to 3 may be a setting value for SL-PRS settings pre-configured on the terminal device.

[0279] Figure 11 shows an example of a setting method for setting multiple SL-PRS setting information in a base station device according to one aspect of this embodiment. In Figure 11, Tx UE is the base station device 3 It may be a terminal device within the coverage, for example, terminal device 1A or terminal device 1B in Figure 1.

[0280] In S1101, the upper layer processing unit 34 of the base station device 3 sets the first SL-PRS setting information. Determined. The first SL-PRS configuration information is a set of multiple parameters for configuring SL-PRS. These are some of the parameter sets. S1101 is the processing of the MAC layer and / or the RRC layer. This may be the case. Furthermore, the first SL-PRS configuration information may also be referred to as the first information.

[0281] In S1101, the base station device 3 is selected from the SL-PRS configuration index in Figure 10. The SL-PRS configuration index may be selected. For example, base station device 3 may select an SL-PRS configuration index from 0 to 7, an index from 2 to 9, an index from 0 to 3, or an index from 5 to 7. Base station device 3 may also select the indices in ascending order of SL-PRS configuration index values.

[0282] In S1101, the base station device 3 includes the parameters in the SL-PRS configuration table in Figure 10. If the data only contains Comb size, you may select multiple SL-PRS configuration indices or multiple Comb sizes.

[0283] The number of indices included in the first SL-PRS configuration information is in DCI format and / or This may be less than or equal to the number of indices that can be notified in the field for notifying the SL-PRS setting in SCI format. For example, if the number of indices that can be notified in the field for the SL-PRS setting in DCI format and / or SCI format is 8, then the number of indices included in the first SL-PRS setting information may be 8 or less. For example, DCI format If the SL-PRS setting field of the kit is 3 bits, the first SL-PRS setting information may be indices 0 to 7, or indices 5 to 7.

[0284] In S1102, if the Tx UE is within the coverage of the base station equipment 3, the upper layer processing unit 14 of the Tx UE receives the first SL-PRS configuration information. In S1102, if the Rx UE is within the coverage of the base station equipment 3, If within the coverage of device 3, the upper layer processing unit 14 of Rx UE processes the first SL-PRS configuration information Receive.

[0285] In S1103, the upper-layer processing unit 14 in the Tx UE's PC5 sets the first SL-PRS configuration information received in S1102. S1103 may be processing at the MAC layer and / or RRC layer in PC5. Note that S1103 may also be included in the procedure for connecting to PC5.

[0286] In S1104, the upper layer processing unit 14 in PC5 of Rx UE receives the first SL-PRS configuration information The Rx UE receives the first SL-PRS configuration information. If there is a PC5 connection between the Rx UE and the Tx UE, the upper layer processing unit 14 on the Rx UE's PC5 receives the first SL-PRS configuration information.

[0287] In S1105, the base station device 3 sets the second SL-PRS configuration information in DCI format. The second SL-PRS configuration information may be one of the parameter sets included in the first SL-PRS configuration information. For example, if the first SL-PRS configuration information has indices from 0 to 7, the second SL-PRS configuration information may be index 0 or index 5. For example, if the first SL-PRS configuration information has multiple comb sizes (2, 4, 6), the second SL-PRS configuration information may be 4. The base station device 3 sets the SL-PRS in DCI format. The second SL-PRS configuration information is set in the field for notifying the settings. Note that the second SL-PRS configuration information may also be referred to as the second information.

[0288] In S1106, base station device 3 transmits DCI to Tx UE. At this time, the DCI format includes second SL-PRS configuration information.

[0289] In S1107, Tx UE sets the SCI format and generates the SL-PRS. In S1107, Tx UE sets a single parameter set in the field for notifying the SCI format SL-PRS setting. The information set in the field may also be referred to as third information.

[0290] In S1107, if Tx UE obtains the second SL-PRS configuration information, Tx UE will perform the following actions The process is performed. If Tx UE determines that there is a PC5 connection with Rx UE, Tx UE may set the second SL-PRS setting information instructed by DCI in the field for notifying the SCI format SL-PRS setting. On the other hand, if Tx UE determines that there is no PC5 connection with Rx UE, Tx UE will perform the SCI format - A field to notify the SL-PRS settings of the mat, pre-configured settings in Tx UE You can set a value, or you can set a second SL-PRS configuration.

[0291] In S1107, if Tx UE does not acquire the second SL-PRS configuration information, Tx UE The following process is performed. If the Tx UE determines that there is a PC5 connection with the Rx UE, the Tx UE may select one parameter from the parameter set included in the first SL-PRS configuration information and set the selected parameter in the field for notifying the SL-PRS configuration in SCI format. On the other hand, if the Tx UE determines that there is no PC5 connection with the Rx UE, the Tx UE may set the pre-configured setting value in the field for notifying the SCI format SL-PRS setting.

[0292] In S1107, Tx UE generates SL-PRS using the set parameter set (third information). At this time, the parameter set set in S1107 is not included in the parameter set. The parameters may be given as higher-level parameters or set in the LMF. The terminal device may be pre-configured, or it may be configured by the terminal device (e.g., Tx UE).

[0293] In S1108, the Tx UE transmits SCI and SL-PRS to the Rx UE. At this time, the SCI The field for notifying the SL-PRS format settings is one set by Tx UE. A lameter set is included.

[0294] In S1109, the Rx UE performs reception processing. The Rx UE configures the SL-PRS in SCI format. The SL-PRS resource may be identified using the parameter set included in the field for notifying the status, and the sidelink positioning reception process may be performed. Note that the Rx UE is SL-PRS If there is insufficient information to identify a resource, Rx UE may use information it already possesses, information provided by higher-level parameters, information obtained from LMF, etc. stomach.

[0295] Figure 12 shows an example of a setting method for setting one SL-PRS setting in a base station device according to one aspect of this embodiment. While Figure 11 showed the case where multiple SL-PRS setting information is set in the base station device, Figure 12 shows the case where one SL-PRS setting information is set in the base station device. The main differences from Figure 11 are described below.

[0296] In S1201, the upper layer processing unit 34 of the base station device 3 sets the first SL-PRS setting information. Determined. The first SL-PRS configuration information is a set of multiple parameters for configuring SL-PRS. One of these is a parameter set. S1201 is the processing of the MAC layer and / or the RRC layer. That's fine.

[0297] In S1201, base station device 3 selects one from the SL-PRS configuration index in Figure 10. You may also select an SL-PRS configuration index. For example, base station device 3 may select index 0 or index 6.

[0298] In S1201, the base station device 3 includes the parameters in the SL-PRS configuration table in Figure 10. If the data only contains Comb sizes, you may select one SL-PRS configuration index or one Comb size.

[0299] S1202 to S1204 are the same as S1102 to S1104, respectively.

[0300] In S1205, the Tx UE configures the SCI format and generates the SL-PRS.

[0301] In S1205, if Tx UE determines that there is a PC5 connection with Rx UE, Tx UE may set the first SL-PRS setting information in the field for notifying the SCI format SL-PRS setting. On the other hand, if Tx UE determines that there is no PC5 connection with Rx UE, Tx UE will set the SCI format In the field for notifying the SL-PRS settings of the Tx UE, enter the pre-configured settings. You can either set it as is, or you can set the first SL-PRS setting information.

[0302] In S1205, the Tx UE uses a single parameter set configured in S1205. , SL-PRS is generated. At this time, the parameter set set in S1205 is not included. The parameters may be given as upper-level parameters, or they may be set in LMF, or at the end The terminal device (e.g., Tx UE) may configure this setting in advance on the end device.

[0303] S1206 and S1207 are the same as S1108 and S1109, respectively.

[0304] Figure 13 shows an example of a setting method for setting multiple SL-PRS setting information in a terminal device according to one aspect of this embodiment. While Figure 11 showed the case of setting multiple SL-PRS setting information in a base station device, Figure 13 shows the case of setting multiple SL-PRS setting information in a terminal device. The main differences from Figure 11 are described below.

[0305] In S1301, the upper layer processing unit 14 in PC5 of Tx UE receives the first SL-PRS setting information This sets the first SL-PRS configuration information, which consists of multiple parameter sets for configuring SL-PRS. This is a partial set of parameters. S1301 is for the MAC layer and / or RRC layer. It may be a process. In S1301, the first SL-PRS setting information is, for example, multiple inputs. The DEX is set.

[0306] S1302 is the same as S1104.

[0307] In S1303, the Tx UE configures the SCI format and generates the SL-PRS. In S1303, if the Tx UE determines that there is a PC5 connection with the Rx UE, the Tx UE may select one parameter from the parameter set included in the first SL-PRS configuration information and set the selected parameter in the field for notifying the SCI format SL-PRS configuration. On the other hand, if the Tx UE determines that there is no PC5 connection with the Rx UE, the Tx UE may set the pre-configured setting value in the field for notifying the SCI format SL-PRS setting.

[0308] S1304 and S1305 are the same as S1108 and S1109, respectively.

[0309] Figure 14 shows an example of a setting method when setting one SL-PRS setting information in a terminal device according to one aspect of this embodiment. Figure 13 shows multiple SL-PRS setting information in Tx UE. In the case of setting this, Figure 14 shows the case where one SL-PRS setting information is set in Tx UE. It is correct. The main differences from Figure 13 are described below.

[0310] In S1401, the upper layer processing unit 14 in the PC5 of the Tx UE receives the first SL-PRS configuration information This sets the first SL-PRS configuration information, which consists of multiple parameter sets for configuring SL-PRS. It is one of the parameter sets. S1401 is for the MAC layer and / or RRC layer. It may be a process. In S1401, the first SL-PRS setting information is, for example, one input The DEX is set.

[0311] S1402 is the same as S1302.

[0312] S1403 is the same as S1205.

[0313] S1404 and S1405 are the same as S1304 and S1305, respectively.

[0314] The programs that operate in the base station device 3 and terminal device 1 according to the present invention may be programs that control the CPU (Central Processing Unit) and the like (programs that make the computer function) in order to realize the functions of the above embodiment according to the present invention. The information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing. Subsequently, various types of ROMs such as Flash ROM (Read Only Memory) and HDD (Hard Disk Drive) were developed. It is stored in a location and read, modified, and written to by the CPU as needed.

[0315] Furthermore, the terminal device 1 and a part of the base station device 3 in the above-described embodiment may be implemented using a computer. In that case, the program for implementing this control function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read by a computer system and executed.

[0316] Furthermore, the term "computer system" as used herein refers to a computer system built into terminal device 1 or base station device 3, and includes hardware such as the OS and peripheral devices. Also, "computer-readable recording medium" refers to portable media such as flexible disks, magneto-optical disks, ROMs, CD-ROMs, and hard disks built into computer systems. This refers to memory devices such as 3D cards.

[0317] Furthermore, "computer-readable recording media" refers to network media such as the Internet. This may include communication lines that dynamically hold programs for a short period of time, such as communication lines used when transmitting programs via communication lines such as telephone lines, as well as volatile memory within computer systems that act as servers or clients and hold programs for a certain period of time. Furthermore, the above-mentioned programs may be for the purpose of realizing some of the functions described above, and may also be able to realize the above-mentioned functions in combination with programs already recorded in the computer system.

[0318] Terminal device 1 may consist of at least one processor and at least one memory containing computer program instructions (computer program). The memory and computer program instructions (computer program) may be configured to cause terminal device 1 to perform the operations and processing described in the above embodiment using the processor. Base station device 3 may consist of at least one processor and at least one memory containing computer program instructions (computer program). The memory and computer program instructions (computer program) may be configured to cause base station device 3 to perform the operations and processing described in the above embodiment using the processor.

[0319] Furthermore, the base station device 3 in the above-described embodiment can also be realized as an assembly (device group) composed of multiple devices. Each device constituting the device group may have some or all of the functions or functional blocks of the base station device 3 related to the above-described embodiment. The device group only needs to have a complete set of the functions or functional blocks of the base station device 3. In addition, the terminal device 1 related to the above-described embodiment can also communicate with the base station device as an assembly.

[0320] Furthermore, the base station device 3 in the above-described embodiment is EUTRAN (Evolved Universal Terrestrial Radio Access Network) and / or NG-RAN (NextGen RAN, NR RAN) Alternatively, the base station device 3 in the above-described embodiment may also be connected to the eNodeB and / or gNB. It may possess some or all of the functions of the corresponding higher-level node.

[0321] Furthermore, some or all of the terminal device 1 and base station device 3 in the above-described embodiment may be implemented as LSIs, which are typically integrated circuits, or as chipsets. Each functional block of terminal device 1 and base station device 3 may be individually chipped, or some or all of them may be integrated into a single chip. Furthermore, the integrated circuit method is not limited to LSIs; dedicated circuits may also be used. Alternatively, it may be implemented using a general-purpose processor. Furthermore, advances in semiconductor technology may replace LSIs. If the technology for integrated circuit integration emerges, it will also be possible to use integrated circuits that utilize that technology.

[0322] Furthermore, although the above-described embodiment mentions a terminal device as an example of a communication device, the present invention is not limited to this and can also be applied to stationary or non-movable electronic devices installed indoors or outdoors, such as terminal devices or communication devices for AV equipment, kitchen equipment, cleaning and washing machines, air conditioning equipment, office equipment, vending machines, and other household appliances.

[0323] While embodiments of this invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and design modifications and the like that do not depart from the gist of this invention are also included. Furthermore, the present invention can be modified in various ways within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of this invention. In addition, configurations in which elements described in each of the above embodiments that produce similar effects are substituted for each other are also included. [Explanation of Symbols]

[0324] 1 (1A, 1B, 1C, 1D) Terminal device 3 Base station equipment 10, 30 Wireless Transceiver Unit 11, 31 Antenna section 12, 32 RF section 13, 33 Baseband section 14, 34 Upper Layer Processing Unit 15, 35 Media Access Control Layer Processing Unit 16, 36 Wireless Resource Control Layer Processing Unit

Claims

1. A base station device that communicates with terminal devices, A higher-level processing unit that sets the first information, A wireless transmission unit that transmits the first information to the terminal device, Equipped with, The first piece of information is a subset of the parameter sets among several parameter sets for configuring SL-PRS, The first piece of information is less than or equal to the number of fields that can be notified in the field for notifying the SL-PRS settings in DCI format and / or SCI format, The SL-PRS is a reference signal transmitted from one terminal device to another. Base station equipment.

2. As the second piece of information, select one piece of information from the first piece of information, The DCI format includes the second information described above and is transmitted to the terminal device. The base station device according to claim 1.

3. The parameter set includes some or all of the SL-PRS symbol count, SL-PRS symbol offset, comb size, and resource element offset. The base station device according to claim 1.

4. A terminal device that communicates with other terminal devices, A wireless receiver that receives DCI, A wireless transmission unit that transmits the third information and SL-PRS to the aforementioned other terminal device, Equipped with, The third piece of information is a set of parameters for setting the SL-PRS, If there is a PC5 connection with the aforementioned other terminal device, the third information is the information indicated by DCI. If there is no PC5 connection with the other terminal device, the third information is pre-configured in the terminal device. This is established information. Terminal device.

5. A terminal device that communicates with other terminal devices, A wireless receiving unit that receives third information and SL-PRS from the aforementioned other terminal device, Equipped with, The third piece of information is a set of parameters for setting the SL-PRS, If there is a PC5 connection with the aforementioned other terminal device, the third information is the information indicated by DCI. If there is no PC5 connection with the other terminal device, the third information is pre-configured in the terminal device. This is established information. Terminal device.

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