Terminal device and communication method

Abstract

It can support efficient transmission. [Solution] The RRC signaling, which includes a bitmap indicating the interlace used for transmitting and receiving PSFCH, is received, and the PSFCH is transmitted and received using multiple resource blocks belonging to one or more interlaces indicated in the bitmap as being used for transmitting and receiving PSFCH, and the bit... Resources are allocated to a single PSFCH in units of multiple resource blocks, starting with the resource block with the smallest index in the interlace that has the smallest index in the interlace that is indicated in the tomap to be used for sending and receiving PSFCHs.

Description

[Technical Field]

[0001] The present invention relates to a terminal device and a communication method. [Background technology]

[0002] Cellular mobile communication radio access methods and radio networks (hereinafter referred to as "Long Term Evolution (LTE)" or "EUTRA: Evolved Universal Terrestrial Radio Access") This is referred to as [a specific term]. This is being considered in the 3rd Generation Partnership Project (3GPP). In LTE, base station equipment is also called eNodeB (evolved NodeB), and terminal equipment is also called UE (User Equipment). LTE is a cellular communication system in which multiple base station devices are arranged in a cell-like structure to cover different areas. A single base station device may manage multiple serving cells.

[0003] 3GPP is currently considering and standardizing the next-generation standard (NR: New Radio) as the communication method for 5G. NR is required to meet 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.

[0004] NR supports sidelink technology, which allows terminal devices to communicate directly with each other without going through a base station. Furthermore, the application of sidelink technology in the unlicensed spectrum is being considered (Non-Patent Document 1). [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] "Title: New WID on NR sidelink evolution ", RP-213678, OPPO, LG Electronics. 3GPP TSG RAN Meeting #94e, Dec.6-17, 2021 [Overview of the project] [Problems that the invention aims to solve]

[0006] In Europe, a maximum transmit power density (PSD) of 10 dBm / MHz is specified for the 5 GHz band. Terminal devices performing sidelink communication in the unlicensed band must communicate while satisfying the specification for maximum transmit power per bandwidth. One aspect of the present invention provides a terminal device capable of supporting efficient transmission in the unlicensed band, and a communication method used in the terminal device. [Means for solving the problem]

[0007] (1) A first aspect of the present invention is a terminal device comprising a processor and a memory for storing computer program code, wherein a plurality of resource blocks used for transmitting and receiving PSFCH are provided. This is a bitmap representing a set of bits, where the bit with the smallest index is associated with the bitmap, starting from the leftmost bit. If the bit value is 0, it indicates that the interlace corresponding to that bit is not used for PSFCH transmission and reception, and if the bit value is 1, The bit indicates that the interlace corresponding to that bit is used for sending and receiving PSFCH. Receiving RRC signaling that shows a bitmap, and using one or more resource blocks belonging to interlaces that are indicated in the bitmap to be used for transmitting and receiving PSFCH The operation includes sending and receiving PSFCH, and the interlace with the smallest index among one or more interlaces that are indicated in the bitmap to be used for sending and receiving PSFCH. Resources are allocated to one PSFCH in units of a plurality of resource blocks in order from the resource block with the smallest index in the ース.

[0008] (2) A second aspect of the present invention is a communication method used in a terminal device, which is a bitmap indicating a set of a plurality of resource blocks used for PSFCH transmission and reception. The smallest interleaving with the smallest index is associated in order from the leftmost bit of the bitmap. When the value of the bit is 0, it indicates that the interleaving corresponding to that bit is not used for PSFCH transmission and reception. When the value of the bit is 1, it indicates that the interleaving corresponding to that bit is used for PSFCH transmission and reception. Receiving RRC signaling indicating the bitmap, and transmitting and receiving PSFCH using a plurality of resource blocks belonging to one or more interleaves indicated as being used for PSFCH transmission and reception in the bitmap. In one or more interleaves indicated as being used for PSFCH transmission and reception in the bitmap, resources are allocated to one PSFCH in units of a plurality of resource blocks in order from the resource block with the smallest index in the interleaving with the smallest index. When the value of the bit is 1, it indicates that the interleaving corresponding to that bit is used for PSFCH transmission. Step of receiving the RRC signaling indicating the bitmap And a step of transmitting and receiving PSFCH using a plurality of resource blocks belonging to one or more interleaves indicated as being used for PSFCH transmission and reception in the bitmap, and in one or more interleaves indicated as being used for PSFCH transmission and reception in the bitmap, resources are allocated to one PSFCH in units of a plurality of resource blocks in order from the resource block with the smallest index in the interleaving with the smallest index. Resources are allocated to one PSFCH in units of a plurality of resource blocks in order from the resource block with the smallest index in the interleaving with the smallest index within the one or more interleaves indicated as being used for PSFCH transmission and reception in the bitmap.

Advantages of the Invention

[0009] According to this invention, efficient transmission can be supported.

Brief Description of the Drawings

[0010] [Figure 1] It is a conceptual diagram of a wireless communication system according to one aspect of this embodiment. [Figure 2] It is a schematic diagram showing an example of a resource grid in a subframe according to one aspect of this embodiment. [Figure 3] It is a schematic block diagram showing the configuration of the terminal device 1 according to one aspect of this embodiment. [Figure 4]It is a schematic block diagram showing the configuration of the base station device 3 according to one aspect of the present embodiment. [Figure 5] It is a diagram showing an example of an interlace mapping according to one aspect of the present embodiment. [Figure 6] It is a diagram showing an example when a time domain for PSFCH is preset in a part within COT related to one aspect of the present embodiment.

Mode for Carrying Out the Invention

[0011] Hereinafter, embodiments of the present invention will be described.

[0012] "A, and / or, B" may be a term including "A", "B", or "A and B".

[0013] That a parameter or information indicates one or more values may mean that the parameter or the information includes at least the parameter or the information indicating the one or more values. The upper layer parameter may be a single upper layer parameter. The upper layer parameter may be an information element (IE: Information Element) including a plurality of parameters.

[0014] FIG. 1 is a conceptual diagram of a wireless communication system according to one aspect of the present embodiment. In FIG. 1, the wireless communication system includes terminal devices 1A to 1C and a base station device 3 (gNB). Hereinafter hereinafter, the terminal devices 1A to 1D are also referred to as terminal device 1 (UE).

[0015] The base station device 3 includes an MCG (Master Cell Group) and an SCG (Secondary Cell Group). It may consist of one or both of the following. An MCG is a group of serving cells consisting of at least a PCell (Primary Cell). An SCG is a group of serving cells consisting of at least a PSCell (Primary Secondary Cell). A PCell is a cell in which an initial connection establishment procedure or a connection re-establishment procedure is performed by terminal device 1. (The cell in which the procedure was performed). A PSCell is a serving cell in which the random access procedure is performed by terminal device 1. An MCG contains one or more SCells (Secondary Cells). It may be configured as follows. An SCG may consist of one or more SCells. A serving cell identity is a short identifier for identifying a serving cell. The serving cell identifier may be provided by a higher-level parameter.

[0016] Serving cell groups (cell groups) include MCG, SCG, and PUCCH cell groups. This is a general term for a serving cell group. A serving cell group may contain one or more serving cells (or component carriers). The one or more serving cells (or component carriers) included in a serving cell group may be operated by carrier aggregation.

[0017] Base station device 3 communicates with terminal device 1 using different frequency bands (carrier frequency, frequency spectrum). This operation (multi-carrier operation) may also be called carrier aggregation or dual connectivity. Different cells (serving cells) use different frequency bands. In base station device 3 and terminal device 1, the multiple cells used in carrier aggregation may include one cell using both the downlink frequency band and the uplink frequency band, and other cells using only the downlink frequency band, or other cells using both the downlink frequency band and the uplink frequency band. Terminal device 1 makes an initial connection with base station device 3, and after the connection with base station device 3 is established, connections to multiple cells are added. Terminal device 1 has additional frequency bands to use for communication. Terminal device 1 has additional cells (serving cells) to use for communication. Terminal device 1 has an additional connection to base station device 3.

[0018] Terminal devices 1A and 1B communicate directly using sidelink technology. Terminal devices 1A and 1B are located within the coverage of base station device 3 (in-coverage). Terminal devices 1A and 1C communicate directly using sidelink technology. Terminal devices 1C and 1D communicate directly using sidelink technology. Terminal devices 1C and 1D are located outside the coverage of base station device 3 (out-of-coverage). There are three cases: direct communication between terminal devices 1 within coverage, direct communication between terminal device 1 within coverage and terminal device 1 out of coverage, and direct communication between terminal devices 1 out of coverage.

[0019] In a wireless communication system, the terminal device 1 and the base station device 3 may use one or more communication methods. For example, CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplex) may be used in the downlink of the wireless communication system. In addition, either CP-OFDM or DFT-s-OFDM (Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplex) may be used in the uplink of the wireless communication system. Here, DFT-s-OFDM is a communication method in which transform precoding is applied prior to signal generation in CP-OFDM. Here, transform precoding is also called DFT precoding.

[0020] CP-OFDM may be used for the side link between terminal devices 1 and terminal devices 1. A DFT-s-OFDM may be used for the side link between end device 1 and terminal device 1.

[0021] As shown in Figure 1, the base station device 3 may consist of one transceiver (or a transmitting point, a transmitting device, a receiving point, a receiving device, and a transceiver). On the other hand, in some cases, the base station device 3 may consist of multiple transceivers. If the base station device 3 consists of multiple transceivers, each of the multiple transceivers may be located at a different geographical location.

[0022] Subcarrier Spacing (SCS) for a given subcarrier spacing μ. Δf is Δf = 2 μ It may also be ×15kHz. For example, the subcarrier spacing setting μ may be 0, 1, 2, 3, or 4.

[0023] Time unit (T) c = 1 / (Δf max ×Nf ) may be used to represent the length in the time domain. Here, Δf max may be 480 kHz. Also, N f may be 4096. Also, the constant κ is κ = Δf max × N f / (Δf ref N f,r ef ) may be 64. Also, Δf ref may be 15 kHz. N f,re f is 2048.

[0024] The transmission of the downlink / uplink signal may be organized by a radio frame (system frame, frame) of length Tf. Here, Tf = (Δfmax × Nf / 100) × Ts = 10 ms may be applicable.

[0025] The transmission of the sidelink signal may be organized by a radio frame (system frame, frame) of length Tf. Here, Tf = (Δfmax × Nf / 100) × Ts = 10 ms may be applicable.

[0026] The radio frame may be composed of 10 subframes. Here, the length of the subframe Tsf = (Δfmax × Nf / 1000) × Ts = 1 ms may be applicable. Also, the number of OFDM symbols per subframe may be Nsubframe, μsymb = Nslotsymb × Nsubframe, μslot and this may also be applicable.

[0027] As the unit in the time domain of the communication method used in the wireless communication system, an OFDM symbol is used. For example, the OFDM symbol may be used as the unit in the time domain of CP - OFDM. Also the OFDM symbol may be used as the unit in the time domain of DFT - s - OFDM.

[0028] A slot may consist of multiple OFDM symbols. For example, one slot may consist of Nslotsymb consecutive OFDM symbols. For example, a normal CP In the settings, Nslotsymb=14 is also acceptable. Furthermore, in the extended CP settings, Nslotsymb=12 is also acceptable.

[0029] Slots may be indexed in the time domain. For example, the slot index nμs may be an integer value in the range of 0 to Nsubframe,μslot-1 in the subframe. They may be given in order. Also, the slot index nμs,f in the wireless frame The integer values ​​may be given in ascending order, ranging from 0 to Nframe, μslot-1.

[0030] Figure 2 shows an example of the configuration of a resource grid according to one aspect of this embodiment. In the resource grid of Figure 2, the horizontal axis is the OFDM symbol index lsym, and the vertical axis is the subcarrier index ksc. The resource grid of Figure 2 contains Nsize, μgrid, x × NRBsc subcarriers and Nsubframe, μsymb OFDM symbols. Here, Nsize, μgrid, and x represent the bandwidth of the SCS intrinsic carrier. The units of the values ​​of Nsize, μgrid, and x are resource blocks.

[0031] Within the resource grid, the subcarrier index ksc and OFDM symbol index The resource identified by `lsym` is a Resource Element (RE: ResourceElement). It is also called by this name.

[0032] A Resource Block (RB) contains NRBsc consecutive subcarriers. Resource blocks include common resource blocks, physical resource blocks (PRBs), and virtual resource blocks (VRBs). It is a general term. For example, NRBsc = 12 is also acceptable.

[0033] The BandWidth Part (BWP) may be configured as a subset of the resource grid. Here, the BWP set for the downlink is also called the downlink BWP. The BWP set for the uplink is also called the uplink BWP.

[0034] The BWP set for a side link is also called the side link BWP.

[0035] Carrier aggregation is the aggregation of multiple servings Communication may be performed using cells. Furthermore, carrier aggregation may be performed using multiple aggregated component carriers. Also, carrier aggregation may be performed using multiple aggregated downlink component carriers. Furthermore, carrier aggregation may be performed using multiple aggregated uplink component carriers.

[0036] The following describes an example of the configuration of a terminal device 1 according to one aspect of this embodiment.

[0037] Figure 3 is a schematic block diagram showing the configuration of a terminal device 1 according to one aspect of this embodiment. As shown in the figure, the terminal device 1 is composed of a wireless transceiver unit 10 and a higher-layer processing unit 14. The wireless transceiver unit 10 includes an antenna unit 11, an RF (Radio Frequency) unit 12, and The upper layer processing unit 14 is composed of at least a part or all of the baseband unit 13. The upper layer processing unit 14 is composed of at least a part or all of the media access control layer processing unit 15 and the wireless resource control layer processing unit 16. The wireless transceiver unit 10 is also referred to as the transmitting unit, receiving unit, or physical layer processing unit.

[0038] The wireless transceiver unit 10 performs physical layer processing.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] The receiving unit of terminal device 1 receives PDCCH. The receiving processing unit of terminal device 1 receives the downlink frequency. Performs processing to receive PDCCH in the wavenumber band (cell, component carrier, carrier). The receiving processing unit of terminal device 1 performs demodulation, decoding, and other processing on the PDCCH. Terminal device 1 The receiving processing unit performs the process of receiving PDCCH and the process of detecting downlink control information. cormorant.

[0043] The receiving unit of terminal device 1 receives the PDSCH. The receiving processing unit of terminal device 1 receives the downlink frequency. Performs processing to receive PDSCH in the wavenumber band (cell, component carrier, carrier). The receiving processing unit of terminal device 1 performs demodulation, decoding, and other processing on the PDSCH.

[0044] The receiving unit of terminal device 1 receives the PSCCH. The receiving processing unit of terminal device 1 performs demodulation, decoding, and other processing on the PSCCH. The receiving processing unit of terminal device 1 performs the processing of receiving the PSCCH. The system performs a process to detect sidelink control information. The receiving unit of terminal device 1 constitutes the PSCCH. The frequency resources (interlace, resource block, described later) are determined. The receiver of terminal device 1 determines the OFDM symbols in which PSCCH may be placed. The receiver of terminal device 1 blind decodes the PSCCH. The receiver of terminal device 1 blind decodes the PSCCH in one slot within one resource pool. The receiver of terminal device 1 blind decodes within one resource pool PSCCH may be blind-decoded using two or more symbols (OFDM symbols). Terminal device 1 The receiving unit of terminal device 1 receives PSSCH. The receiving processing unit of terminal device 1 performs demodulation, decoding, and other processing on PSSCH. The receiving unit of terminal device 1 receives PSFCH. The receiving processing unit of terminal device 1 receives HARQ-ACK on PSFCH.

[0045] The transmitting unit (also called the transmitting processing unit) of terminal device 1 transmits a HARQ-ACK. The transmitting processing unit of terminal device 1 transmits a HARQ-ACK to PDSCH. The transmitting processing unit of terminal device 1 transmits an uplink HARQ-ACK is transmitted in the link frequency band (cell, component carrier, carrier).

[0046] The transmission processing unit of terminal device 1 sends a HARQ-ACK to PSSCH. The control unit transmits a HARQ-ACK in the sidelink frequency band. The transmission processing unit of terminal device 1 transmits a HARQ-ACK on PSFCH. The transmission processing unit of terminal device 1 may also transmit a HARQ-ACK on PSSCH. The transmission processing unit of terminal device 1 does not have to transmit a HARQ-ACK for PSSCH.

[0047] The transmission processing unit of terminal device 1 transmits a common interlaced signal in the time domain in which a PSFCH occasion (which may also be called a PSFCH transmission occasion) is set. A common interlaced signal is a signal whose signal structure is interlaced. An interlaced signal is a signal that is distributed across resources throughout the entire frequency band. A common interlaced signal is a common signal that multiple terminal devices 1 can transmit. When the transmission processing unit of terminal device 1 transmits HARQ-ACK information in the time domain in which a PSFCH occasion is set, In the same time domain, the PSFCH and common interlacing are located where the signal generated from the HARQ-ACK information is placed. A signal is transmitted. Note that the signal generated from the HARA-ACK information and the common interlaced signal may be defined together as the PSFCH signal. In this case, the common interlaced signal It is used to meet the requirements of the OCB.

[0048] The resources where signals generated from HARQ-ACK information are placed are called Dedicated PRBs (Dedicated PRB(s) for PRB). One PSFCH uses one Dedicated PRB, or multiple Dedicated PRBs. The number of individual PRBs used in one PSFCH is configured by the base station device 3 or pre-configured by the specifications. The number of PRBs that make up an individual PRB used in one PSFCH may be configured for each resource pool. The number of PRBs that make up an individual PRB used in one PSFCH may be configured for each sidelink BWP.

[0049] Interlacing including PRBs used in individual PRBs is done via bitmaps using RRC signaling. The base station device 3 is shown to terminal device 1. Terminal device 1 is used for transmitting and receiving PSFCH, RRC signaling including a bitmap indicating interlacing, which includes PRBs used in other PRBs. Receive. Base station equipment 3 includes PRBs used for individual PRBs used for transmitting and receiving PSFCH. It sends RRC signaling that includes a bitmap indicating interlacing. The bitmap indicates a set of multiple resource blocks (individual PRBs) used for sending and receiving PSFCH. The leftmost bit of the bit is associated with the interlace with the smallest index. Here, the interlace index may be the interlace index in the resource pool. Here, the interlace index is in the sidelink BWP An interlaced index may be used. Here, the interlaced index may be an interlaced index within the carrier.

[0050] For example, if 20 interlaces (interlace #0, interlace #1, interlace #2, interlace #3, interlace #4, interlace #5, interlace #6, interlace #7, interlace #8, interlace #9, interlace #10, interlace #11, interlace #12, interlace #13, interlace #14, interlace #15, interlace #16, interlace #17, interlace #18, interlace #19) are configured in the resource pool, then the bitmap will be 2 It consists of 0 bits, with the 1st bit (bit #0) corresponding to the 1st interlace #0, the 2nd bit (bit #1) corresponding to the 2nd interlace #1, the 3rd bit (bit #2) corresponding to the 3rd interlace #2, the 4th bit (bit #3) corresponding to the 4th interlace #3, the 5th bit (bit #4) corresponding to the 5th interlace #4, the 6th bit (bit #5) corresponding to the 6th interlace #5, and the 7th bit (bit #6) corresponding to the 7th interlace #6. Corresponding to this, the 8th bit (bit #7) corresponds to the 8th interlace #7, the 9th bit (bit #8) corresponds to the 9th interlace #8, the 10th bit (bit #9) corresponds to the 10th interlace #9, the 11th bit (bit #10) corresponds to the 11th interlace #10, the 12th bit (bit #11) corresponds to the 12th interlace #11, the 13th bit (bit #12) corresponds to the 13th interlace #12, and the 14th bit (bit #13) corresponds to the 14th It corresponds to interlace #13, the 15th bit (bit #14) corresponds to the 15th interlace #14, the 16th bit (bit #15) corresponds to the 16th interlace #15, the 17th bit (bit #16) corresponds to the 17th interlace #16, the 18th bit (bit #17) corresponds to the 18th interlace #17, the 19th bit (bit #18) corresponds to the 19th interlace #18, and the 20th bit (bit #19) corresponds to the 20th interlace #19.

[0051] If the bit value of a bit in a bitmap is 0, the interlace corresponding to that bit is PSFCH. This indicates that it will not be used for transmission or reception (not used in individual PRBs), and the bits of the bitmap If the value is 1, the interlace corresponding to that bit is used for sending and receiving PSFCH (individual This indicates that it will be used in another PRB. For example, if the interlacing index is the first inter Race #0 and the second interlace, Interlace #1, are used for individual PRBs. If no other interlacing is used for individual PRBs, then 110000000000000 A bitmap of 00000 is displayed. Terminal device 1 determines from the received bitmap whether the interlacing includes the PRB used for individual PRBs used for transmitting and receiving PSFCH.

[0052] Furthermore, it may be indicated whether a particular interlace is used for common interlaced signals and only for individual PRBs for other interlaces. For example, the index of the interlace The first interlace, #0, is used for the common interlace signal, and the interlace indices from the second to the 20th (19 interlaces in total) are used for individual PRBs. It is indicated whether it can be done, and a 19-bit bitmap may be used.

[0053] Individual PRBs are indexed within one or more interlaces used in the individual PRB. The index of the interlaces within one or more interlaces used in the individual PRB is the most Individual PRBs are indexed starting with the PRB with the smallest resource block index (lowest frequency) within the smallest interlace. After individual PRB indexing has been performed for all PRBs within the interlace with the smallest interlace index, individual PRBs are indexed starting with the PRB with the smallest resource block index (lowest frequency) within the interlace with the next largest interlace index. The indexing of the individual PRBs above is performed within all interlaces used by the individual PRBs. Terminal device 1 is indicated by a bitmap as being used for sending and receiving PSFCHs. For one or more resource blocks included in the above interlace, the corresponding individual PRB Determine the index.

[0054] For example, suppose a resource pool contains 10 interlaces (interlace #0, interlace #1, interlace #2, interlace #3, interlace #4, interlace #5, interlace #6, interlace #7, interlace #8, interlace #9), and each interlace consists of 10 PRBs. The first interlace #0 and 1 Assume that the 0th interlace, #9, is set as the interlace used for individual PRBs. Interlace #0 consists of PRB#0, PRB#10, PRB#20, PRB#30, PRB#40, PRB#50, PRB#60, PRB#70, PRB#80, and PRB#90. Interlace #9 consists of PRB#9, PRB#19, PRB#29, PRB#39, PRB#49, PRB#59, and PRB#6 Assume it consists of 9, PRB#79, PRB#89, and PRB#99. PRB#0 of interlace #0 is indexed as the 1st individual PRB, PRB#10 of interlace #0 is indexed as the 2nd individual PRB, PRB#20 of interlace #0 is indexed as the 3rd individual PRB, PRB#30 of interlace #0 is indexed as the 4th individual PRB and Interlace #0 PRB#40 is indexed as the 5th individual PRB, interlace #0 PRB#50 is indexed as the 6th individual PRB, interlace #0 PRB#60 is indexed as the 7th individual PRB, interlace #0 PRB#70 is indexed as the 8th individual PRB, interlace #0 PRB#80 is indexed as the 9th individual PRB, interlace #0 PRB#90 is indexed as the 10th individual PRB, interlace #9 PRB#9 is indexed as the 11th individual PRB, and interlace #9 PRB#19 PRB#29 of interlaced #9 is indexed as the 12th individual PRB, PRB#29 of interlaced #9 is indexed as the 13th individual PRB, PRB#39 of interlaced #9 is indexed as the 14th individual PRB, PRB#49 of interlaced #9 is indexed as the 15th individual PRB, and PRB#59 of interlaced #9 is indexed as the 16th individual PRB It is then indexed, and PRB#69 of interlaced #9 is indexed as the 17th individual PRB, PRB#79 of interlaced #9 is indexed as the 18th individual PRB, PRB#89 of interlaced #9 is indexed as the 19th individual PRB, and PRB#99 of interlaced #9 is indexed as the 20th individual PRB.

[0055] When multiple individual PRBs are used in a single PSFCH, consecutive individual PRBs of the index are used. For example, in the above example, if two individual PRBs are used in one PSFCH, the 1st and 2nd individual PRBs, the 3rd and 4th individual PRBs, the 5th and 6th individual PRBs, the 7th and 8th individual PRBs, the 9th and 10th individual PRBs, and the 11th The 12th pair of individual PRBs, the 13th and 14th pair of individual PRBs, the 15th and 16th pair of individual PRBs, the 17th and 18th pair of individual PRBs, or the 19th and 20th pair of individual PRBs are used in one PSFCH. For example, in the above example, four PSFCHs When individual PRBs are used, the 1st, 2nd, 3rd, and 4th individual PRBs, the 5th, 6th, 7th, and 8th individual PRBs, and the 9th, 10th, 11th, and 12th individual PRBs are used. One individual PRB, four individual PRBs (the 13th, 14th, 15th, and 16th), or four individual PRBs (the 15th, 16th, 17th, and 18th) are used in one PSFCH.

[0056] Terminal device 1 determines one or more individual PRBs used in the PSFCH to transmit, arranges the signal generated from the HARQ-ACK information, and transmits it. Terminal device 1 uses It determines one or more individual PRBs and demodulates the HARQ-ACK information from the signal received by the individual PRB. For example, terminal device 1 uses one or more PSCCHs and / or PSSCHs that have been transmitted. Based on the index of the selected subchannels, one or more individual components used in PSFCH A different PRB may be determined. For example, terminal device 1 may determine one or more individual PRBs used for PSFCH based on at least the index of the subchannels used for one or more PSCCHs and / or PSSCHs that were received. For example, terminal device 1 may determine one of the subchannels used for PSFCH that was transmitted Based on at least the indices of the slots used for the PSCCH and / or PSSCH described above, one or more individual PRBs used for the PSFCH may be determined. For example, terminal device 1 may determine one or more individual PRBs used for the PSFCH based on at least the indices of the slots used for one or more PSCCH and / or PSSCH that have been received.

[0057] When the PRBs included in the common interlace and the individual PRBs are located within a 1 MHz bandwidth, terminal device 1 uses only the individual PRBs within that 1 MHz bandwidth and does not use the PRBs included in the common interlace.

[0058] By configuring individual PRBs as described above, multiple individual PRBs can be used in a single PSFCH. This allows for a wider frequency range and avoids the need to set different transmit powers in different resource blocks within a single PSFCH to satisfy the constraint of maximum transmit power density within 1 MHz. This allows for efficient transmission.

[0059] The transmission processing unit of terminal device 1 transmits a PSCCH. The transmission processing unit of terminal device 1 performs encoding, modulation, and other processing on the PSCCH. The transmission processing unit of terminal device 1 performs processing to transmit sidelink control information using the PSCCH. The transmission unit of terminal device 1 determines the frequency resources (interlace, resource block, described later) that constitute the PSCCH. The transmission processing unit of terminal device 1 determines the OFDM symbol on which the PSCCH may be placed. The transmission processing unit of terminal device 1 transmits a PSSCH. The transmission processing unit of terminal device 1 performs encoding, modulation, and other processing on the PSSCH.

[0060] The upper layer processing unit 14 outputs the uplink data (transport block) generated by user operations, etc., to the wireless transceiver unit 10. The upper layer processing unit 14 processes the MAC layer, packet Packet Data Convergence Protocol (PDCP) layer, wireless link This component handles the control (RLC: Radio Link Control) layer and the RRC layer processing.

[0061] The upper layer processing unit 14 outputs sidelink data (transport block) to the wireless transceiver unit 10.

[0062] The media access control layer processing unit (MAC layer processing unit) 15, which is part of the upper layer processing unit 14, performs MAC layer processing.

[0063] The wireless resource control layer processing unit 16, which is part of the upper layer processing unit 14, performs RRC layer processing. The line resource control layer processing unit 16 processes various setting information / parameters (RRC parameters) of its own device. It manages the wireless resource control layer processing unit 16 sets various setting information / parameters (RRC parameters) based on the higher layer signals received from the base station device 3. The line resource control layer processing unit 16 sets various setting information / parameters (RRC parameters) based on information indicating various setting information / parameters (RRC parameters) received from the base station device 3. This setting information includes physical channels, physical signals (i.e., the physical layer), and MAC layers. This may include information related to the processing or configuration of the PDCP layer, RLC layer, and RRC layer. These parameters may also be higher-layer parameters.

[0064] 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.

[0065] 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.

[0066] 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 receiving processing unit. ru.

[0067] The wireless resource control layer processing unit 16 configures settings for multiple search areas. Each of these settings for multiple search areas is indexed.

[0068] The wireless resource control layer processing unit 16 processes the RRC signaling received from the base station device 3. Next, configure settings related to CSI feedback (transmission of channel status information). Wireless resources The control layer processing unit 16 sets the transmission period of the CSI feedback, the transmission start timing (offset) of the CSI feedback, the type of information of the CSI feedback, etc. The control layer processing unit 16 configures settings related to multiple CSI feedbacks. Each of these settings related to multiple CSI feedbacks is indexed.

[0069] The wireless resource control layer processing unit 16 processes the RRC signaling received from the base station device 3. Then, the settings related to SPS are configured. The wireless resource control layer processing unit 16 configures the SPS resources (PDSCH This sets the resource period, the start timing (offset) of the SPS resource (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. The line resource control layer processing unit 16 configures settings for multiple SPSs. Each of the settings for multiple SPSs is indexed.

[0070] The wireless resource control layer processing unit 16 is based on the RRC signaling received from the base station device 3. Next, the carrier aggregation is configured. The wireless resource control layer processing unit 16 configures the serving cells (secondary cells, primary secondary cells) as part of the carrier aggregation configuration. The serving cells may consist of downlink component carriers. The serving cells may consist of both downlink component carriers and uplink component carriers. The wireless resource control layer processing unit 16 controls the wireless transceiver 10 to perform reception processing on the downlink component carrier configured in the carrier aggregation configuration. The wireless resource control layer processing unit 16 controls the wireless transceiver 10 to perform transmission processing on the uplink component carrier configured in the carrier aggregation configuration.

[0071] 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 wireless resource control layer processing unit 16 sets the slots (PSFCH occasions) on which PSFCH can be transmitted. For example, a slot on which PSFCH can be transmitted is set for every four slots. For example, the wireless resource control layer processing unit 16 sets the interlacing used for transmitting and receiving PSFCH. For example, the wireless resource control layer processing unit 16 processes the resource blocks used for transmitting and receiving PSFCH Interlacing including the 'k' is set. For example, the wireless resource control layer processing unit 16 sets the number of individual PRBs used for transmission and reception of one PSFCH.

[0072] The media access control layer processing unit (MAC layer processing unit) 15 receives MAC CE from the base station device 3. Based on the MAC Control Element, secondary cell activation / deactivation Perform activation. The Media Access Control Layer (MAC Layer) Processing Unit 15 is a secondary Based on MAC CEs (SCell Activation / Deactivation MAC CEs) containing information on the activation / deactivation of the SCell, the Wireless Resource Control Layer Processing Unit 16 is configured Information indicating activation / deactivation for multiple serving cells is output to the wireless transceiver 10. The media access control layer processing unit (MAC layer processing unit) 15, Based on the timer, the secondary cell is deactivated. The media access control layer processing unit (MAC layer processing unit) 15 receives a schedule from the base station device 3 for the serving cell. The system determines, by measuring with a timer if ringing has not occurred for a certain period of time, deactivates the serving cell, and controls the wireless transceiver 10.

[0073] 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.

[0074] The wireless resource control layer processing unit 16 may include function information generated based on the functions of the terminal device 1 in the RRC message and transmit it to the base station device 3.

[0075] The wireless transceiver 10 performs modulation processing, encoding processing, and transmission processing. The wireless transceiver 10 generates a physical signal by encoding processing, modulation processing, and baseband signal generation processing (conversion to a time-continuous signal) of the data (transport block), and transmits it to the base station device 3 or the terminal device 1.

[0076] The wireless transceiver 10 performs demodulation, decoding, and reception processing. Based on the demodulation and decoding processing of the received physical signal, the wireless transceiver 10 outputs the transport block of the detected information to the upper layer processing unit 14 on the DL-SCH.

[0077] The wireless transceiver unit 10 stops various receiving and transmitting processes in a deactivated serving cell. For example, the wireless transceiver unit 10 stops monitoring the PDCCH in a deactivated serving cell. The PDSCH reception is stopped in the serving cell. For example, the wireless transceiver 10 is non Stop SRS transmission in activated serving cells. For example, in the wireless transceiver. 10 stops transmitting PUSCH in the deactivated serving cell.

[0078] The RF unit 12 converts the signal received via the antenna unit 11 into a baseband signal (downconvert) and removes unwanted frequency components. The RF unit 12 outputs the baseband signal to the baseband unit 13.

[0079] The baseband section 13 converts the analog signal input from the RF section 12 into a digital signal. The baseband section 13 then converts the converted digital signal into a CP (Cyclic Prefix). The relevant portion is removed. The baseband section 13 performs a Fast Fourier Transform (FFT) on the signal from which the CP has been removed to extract the signal in the frequency domain.

[0080] The baseband section 13 performs an inverse fast Fourier transform (IFFT) on the physical signal to generate OFDM symbols. The baseband section 13 then processes the generated OFDM symbols. A CP is added to the amp to generate a baseband digital signal. The baseband unit 13 converts the baseband digital signal into an analog signal. The baseband unit 13 outputs the converted analog signal to the RF unit 12.

[0081] The RF section 12 uses a low-pass filter to remove unwanted frequency components from the analog signal input from the baseband section 13 and upconverts the analog signal to the carrier frequency. The RF unit 12 converts (converts) and generates an RF signal. The RF unit 12 transmits the RF signal via the antenna unit 11. The RF unit 12 also amplifies power. 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] When HARQ-ACK feedback is applied to the side link, the wireless transceiver 10 The contention window size is updated based on the status of the HARQ-ACK. The wireless transceiver 10 updates the contention window size when the status of the HARQ-ACK is ACK. 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 from the base station device 3 to the terminal device 1.

[0086] 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.

[0087] 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.

[0088] The following describes an example of the configuration of a base station device 3 according to one aspect of this embodiment.

[0089] Figure 4 is a schematic block diagram showing the configuration of a base station device 3 according to one aspect of this embodiment. As shown in the figure, the base station device 3 is composed of a wireless transceiver unit 30 and a higher layer processing unit 34. The wireless transceiver unit 30 is composed of an antenna unit 31, an RF (Radio Frequency) unit 32 and a baseband unit 33. The higher layer processing unit 34 is It is composed of a media access control layer processing unit 35 and a wireless resource control layer processing unit 36. The wireless transceiver unit 30 is also referred to as the transmitting unit, receiving unit, or physical layer processing unit.

[0090] The upper layer processing unit 34 performs processing at the MAC (Medium Access Control) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Radio Resource Control (RRC) layer. The MAC layer is also called the MAC sublayer. The PDCP layer is also called the PDCP sublayer. The RLC layer is also called the RLC sublayer. The RRC layer is also called the RRC sublayer.

[0091] The media access control layer processing unit 35, which is part of the upper layer processing unit 34, performs MAC layer processing. Here, the MAC layer processing involves mapping between logical channels and transport channels, 1 Alternatively, multiplexing of multiple MAC SDUs (Service Data Units) into transport blocks, or decomposition of transport blocks delivered from the physical layer on UL-SCH into one or more MAC SDUs. , Application of HARQ (Hybrid Automatic Repeat request) to transport blocks, This may also include processing some or all of the scheduling requests.

[0092] The wireless resource control layer processing unit 36, located in the upper layer processing unit 34, performs RRC layer processing. RRC layer processing may include some or all of the following: management of broadcast signals, management of RRC connection / RRC idle status, and RRC reconfiguration. The wireless resource control layer processing unit 36 ​​generates or obtains downlink data (transport blocks), system information, RRC messages, MAC CE, etc., which are placed on the PDSCH, from the upper node, and outputs them to the wireless transceiver unit 30.

[0093] Furthermore, the wireless resource control layer processing unit 36 ​​manages various setting information / parameters (RRC parameters) for each terminal device 1. The wireless resource control layer processing unit 36 ​​uses signals from higher layers. Various setting information / parameters may be set for each terminal device 1. That is, the wireless resource control layer processing unit 36 ​​transmits / notifies information indicating various setting information / parameters. This setting information includes physical channels and physical signals (i.e., physical layer), MAC layer, and PDCP. The information may include details related to the processing or configuration of the layers, RLC layer, and RRC layer. These parameters may be higher-layer parameters. For example, the radio resource control layer processing unit 36 ​​may include RRC parameters in an RRC message on a logical channel and transmit it to the terminal device 1. Here, the RRC message may be mapped to one of the following: BCCH (Broadcast Control Channel), CCCH (Common Control Channel), or DCCH (Dedicated Control Channel).

[0094] The wireless resource control layer processing unit 36 ​​is included in the RRC message transmitted from the terminal device 1. Based on the RRC parameters, the RRC parameters to be transmitted to terminal device 1 may be determined. Here, the RRC message transmitted from terminal device 1 is related to the functional information report of terminal device 1. That's fine.

[0095] 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.

[0096] 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 RRC signaling is generated to indicate 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 transmission processing unit.

[0097] The wireless resource control layer processing unit 36 ​​configures settings for multiple search areas. Each of these settings for multiple search areas is indexed.

[0098] 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).

[0099] 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.

[0100] 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.

[0101] 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.

[0102] The wireless resource control layer processing unit 36 ​​configures the terminal device 1 for sidelink settings. The wireless resource control layer processing unit 36 ​​sets the parameters for sidelinks for the terminal device 1 and notifies the terminal device 1 via the wireless transceiver unit 30. For example, the following information is used as parameters for sidelinks. • Sidelink BWP configuration • Sidelink wireless bearer configuration • Side link measurement configuration

[0103] 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 the parameters used for controlling the PSBCH's transmit power. 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 sidelink transmit resource pool configuration includes the transmit resource pool configuration for the method in which the base station device 3 instructs the terminal device 1 with scheduling information (mode 1), and the transmit resource pool configuration for the method in which the terminal device 1 autonomously selects resources (mode 2).

[0104] 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.

[0105] Furthermore, the information indicating the configuration of the sidelink resource pool may include information indicating the configuration of the slots. This includes the configuration of a slot where there is one symbol (OFDM symbol) in which a PSCCH can be placed, and the configuration of a slot where there are two symbols in which a PSCCH can be placed. Information indicating which of the following applies may be included. PSCCH is located within the slot. In a slot configuration with one symbol, the configuration determines which of the following symbols can contain PSCCH: the 1st, 2nd, 3rd, 4th, 5th, 6th, or 7th symbol. In a slot configuration with two symbols in which PSCCH can be contained, the configuration determines which of the symbols can contain PSCCH. The first location is the first symbol, the second symbol, the third symbol, and the fourth The symbol, the fifth symbol, the sixth symbol, or the seventh symbol are formed, and the fourth symbol is the second symbol where PSCCH can be placed. The fifth, sixth, seventh, or eighth symbol is configured. Information indicating the slot configuration is provided by the AGC signal. A symbol may be shown. A signal for AGC may be placed before PSCCH.

[0106] PSSCH is placed in OFDM symbols after the OFDM symbol in which PSCCH is placed. For example, if PSCCH is placed in the first symbol of the slot, PSSCH will be placed in the second and subsequent symbols in the slot. For example, if PSCCH is placed in the eighth symbol of the slot... In total, PSSCH is placed in the 9th and subsequent symbols within the slot.

[0107] 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 includes the initial value (ID) of the DM RS scrambling of PSCCH, and information indicating the first stage SCI Includes information indicating the number of bits reserved.

[0108] The information describing the configuration of the PSSCH includes information indicating candidate β offsets used to determine the number of coded modulation symbols in the 2nd stage SCI, information indicating the time-domain pattern of the PSSCH's DM RS, and information indicating a scaling factor to limit the number of resource elements allocated to the PSSCH's 2nd stage SCI.

[0109] 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 (PSFCH occasions) where the PSFCH resource is placed. For example, information indicating the interval between 1 slot, 2 slots, and 4 slots is used. I can stay.

[0110] The information describing the configuration of the PSFCH includes information indicating the set of interlaces used for PSFCH transmission and reception. In unlicensed bands, if interlaces are used, information indicating the set of interlaces used for PSFCH transmission and reception is included. The information indicating the set of interlaces used for PSFCH transmission and reception uses a bitmap, where each bit corresponds to the bit position of the interlaces used for PSFCH transmission and reception. Indicates whether it is included. In the bitmap, it is indicated that it is used for sending and receiving PSFCH. The PRB (Resource Block) that makes up the Thales is used for sending and receiving PSFCH. Information indicating the set of interlacing used for reception may be configured for each resource pool (transmit resource pool, receive resource pool).

[0111] Information describing the configuration of a PSFCH includes information indicating the number of individual PRBs used in a single PSFCH. One PSFCH uses one or more individual PRBs. Information indicating the number of individual PRBs used in one PSFCH is stored in the resource pool (transmit resource pool, receive resource pool). This may be configured for each resource pool.

[0112] 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.

[0113] 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.

[0114] Information indicating the configuration of the sidelink radio bearer includes information indicating whether terminal device 1 is the synchronization source, information indicating parameters used to detect sidelink radio link failures, information indicating the frequency used for the sidelink, information indicating the configuration for the method (mode 1) instructing terminal device 1 on scheduling information, information indicating the configuration for the method (mode 2) in which terminal device 1 autonomously selects resources, and CSI reporting. Information indicating whether a sidelink is used, information indicating the configuration of the sidelink scheduling 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, information indicating the configuration of the sidelink RLC, etc. Includes.

[0115] 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.

[0116] Information indicating the configuration for the method (mode 1) by which the base station device 3 instructs the terminal device 1 on scheduling information includes information indicating the RNTI used by the base station device 3 to scramble the CRC in DCI format (e.g., DCI format 3_0) containing scheduling information for the terminal device 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.

[0117] Information indicating the configuration for the method (mode 2) in which terminal device 1 autonomously selects resources includes information indicating the transmission parameters of PSSCH such as MCS, subchannel number, number of retransmissions, and transmit power parameters, information indicating the probability used for resource selection, and information indicating the threshold for RSRP used for resource selection.

[0118] The parameters related to the sidelink include information indicating the number of slots (multiple slots) used in one transmission unit. Information indicating the number of consecutive slots is also included. Information indicating a time length, such as ms (milliseconds), may also be included instead of the number of slots. In Mode 2, information indicating the number of slots used in one transmission unit is included. In Mode 2, terminal device 1 selects resources in units of the indicated number of slots. In step 2, terminal device 1 reserves resources in units of the indicated number of slots. Information indicating the number of slots used in one transmission unit is used (set, configured) for each resource pool. Resources consisting of multiple logically consecutive slots used in one transmission unit are called multiple slot resources (multiple resource units). .

[0119] The length of the consecutive slots corresponds, for example, to the maximum COT. This indicates the number of slots corresponding to a length of 2ms, 3ms, 4ms, 6ms, 8ms, or 10ms. Information is set for the resource pool. For example, the number of slots used in one transmission unit can be 2 slots, 3 slots, 4 slots, 6 slots, 8 slots, or 10 slots. One of the following will be shown. Terminal device 1 may determine (interpret) the number of slots used in one unit of transmission based on the subcarrier interval used, from information indicating the number of slots used in one unit of transmission.

[0120] For example, if the information indicating the number of slots used in one transmission unit indicates 2 slots. Terminal device 1 selects and reserves resources in units of 2 slots. For example, terminal Device 1 selects resources from two slots and reserves two sets of resources from two different slots. To summarize. For example, terminal device 1 selects resources from two slots and reserves one set of resources from two different slots. For example, it indicates the number of slots used in one unit of transmission. If the information indicates 3 slots, terminal device 1 performs resource selection and resource reservation in units of 3 slots. For example, terminal device 1 selects resources for a certain 3 slots and reserves 2 sets of resources for different 3 slots. For example, terminal device 1 selects resources for a certain 3 slots and reserves 1 set of resources for different 3 slots. For example, if the information indicating the number of slots used in one transmission unit indicates 4 slots, terminal device 1 performs resource selection and resource reservation in units of 4 slots. For example, terminal device 1 selects resources for a certain 4 slots. Select and reserve two sets of resources in four different slots. For example, terminal device 1 reserves four slots Select a lot of resources and reserve one set of four different slots of resources. For example, if the information indicating the number of slots used in one unit of transmission indicates 6 slots, terminal device 1 Resource selection and reservation are performed in units of 6 slots. For example, terminal device 1 selects resources in a certain 6 slot and reserves two sets of resources in different 6 slots. For example, terminal device 1 selects resources in a certain 6 slot and reserves one set of resources in different 6 slots. Reserve a slot. For example, information indicating the number of slots used in one transmission unit is 8 slots. In this case, terminal device 1 performs resource selection and resource reservation in units of 8 slots. Then, terminal device 1 selects resources from a certain 8 slots and uses resources from a different 8 slots. Set reservations are made. For example, terminal device 1 selects a set of 8 resources and reserves a set of 8 different resources. For example, the number of slots used in one unit of transmission. If the information indicating a number indicates 10 slots, terminal device 1 will select and reserve resources in units of 10 slots. For example, terminal device 1 will select resources for a certain 10 slots and reserve two sets of resources for a different 10 slots. For example, terminal device 1 will select resources for a certain 10 slots Select a resource and reserve one set of 10 different resource slots.

[0121] A time interval (resource reservation interval) between the first selected set of resources and the next reserved set of resources is set for each resource pool. Base station device 3 transmits RRC signaling including parameters indicating this time interval to terminal device 1. Terminal device Unit 1 receives RRC signaling from base station device 3, which includes a parameter indicating the time interval. This time interval is also used for the time intervals between reserved sets of resources.

[0122] Terminal device 1 selects a channel access priority class according to the priority of the data to be transmitted, determines the maximum COT used in the selected channel access priority class, and determines the slot used in one unit of transmission set for the resource pool. The number of items selects the resource pool corresponding to its maximum COT, and the resources are allocated in units of multiple slots. You may select and reserve them. Multiple resource pools are configured for terminal device 1, and each configured resource pool has a different number of consecutive slots in Mode 2. It is set as a slot used for one unit of transmission.

[0123] The number of slots used in one unit of transmission in Mode 2 is related to the sidelink. Alternatively, the configuration may include the channel access priority class for the resource pool as a parameter, rather than being included in the parameters themselves. Alternatively, the number of slots used in one transmission unit may be predefined for each channel access priority class, and the number of slots used in one transmission unit set for each resource pool may be implicitly notified from the base station device 3 to the terminal device 1. The terminal device 1 recognizes the number of slots used in one transmission unit in mode 2 for that resource pool from the channel access priority class set for that resource pool.

[0124] Multiple slot resources may also be used in Mode 1.

[0125] In single-slot resource allocation, a guard time (also called a gap) is provided in the last time interval of the slot. During the guard time, the switch between transmit and receive occurs. In multiple-slot resources, some slots do not have a guard time. Alternatively, in multiple-slot resources, some slots may have a short guard time (less than 16 μs) during which LBT is not required. For example, when two consecutive slot resources are used as a multiple-slot resource. No guard time is set for the last time interval of the first slot. For example, if three consecutive slot resources are used as a multiple slot resource, the first slot No guard time is provided in the final time interval of the first and second slots. For example, when four consecutive slot resources are used as multiple slot resources. In total, the last time interval of the first, second, and third slots. No guard time is provided. For example, if 6 consecutive resource slots are multiple When used as a lot resource, the first slot, the second slot and the third slot There is no guard time in the last time interval of the lot, the fourth slot, and the fifth slot. For example, if eight consecutive slots of resources are multiple slot resources When used as such, the last time of each of the 1st, 2nd, 3rd, 4th, 5th, 6th, and 7th slots No guard time is provided in the intervals between them. For example, when 10 consecutive slot resources are used as a multiple slot resource, the 1st slot, the 2nd slot and the 3rd slot There is no guard time in the final time interval of the first, fourth, fifth, sixth, seventh, eighth, and ninth slots.

[0126] Terminal device 1 has one channel or multiple channels in a series of consecutive slots. A message is transmitted. For example, terminal device 1 transmits a single PSSCH that spans multiple slots. Note that a separate transport block is transmitted in each slot. For example, terminal device 1 transmits a separate PSSCH in each of its multiple slots. Then, terminal device 1 transmits a different PSCCH in each of the multiple slots. In this case, the PSCCH of each slot corresponds to the PSSCH of each slot. Note that if one PSSCH is transmitted across multiple slots, the corresponding PSCCH will be the PSSCH of the multiple consecutive slots. It may be transmitted using only the first slot. PSSCH contains the slots used in one unit of transmission. It includes information indicating the number of sets. Alternatively, PSCCH contains multiple sets of selected resources. This includes information indicating the number of remaining slots in the lot (the number of remaining slots belonging to the multiple resource unit).

[0127] Terminal device 1 recognizes resources reserved by other terminal devices 1 (resources in multiple consecutive slots) from the information contained in the received PSCCH (information from the 1st SCI), excludes those resources, and removes resources that were not recognized as being reserved by other terminal devices 1. From this, terminal device 1 selects and reserves the resources it will use. Terminal device 1 may also recognize resources (resources in multiple consecutive slots) that have been secured or reserved by other terminal devices 1 from the information of the 2nd SCI included in the received PSSCH.

[0128] In this way, terminal device 1 supports resources in units of multiple consecutive slots, corresponding to the maximum COT. By selecting and reserving resources, the number of LBTs can be reduced, enabling efficient Mode 2 operation. Resources are selected and reserved on a slot-by-slot basis, and if there is a time gap (a gap of 16 μs or more) between slots, terminal device 1 must perform an LBT before transmitting for each slot. Terminal device 1 cannot transmit if an LBT fails, and an increase in the number of LBTs leads to an increase in the number of LBT failures, resulting in an increase in the number of times terminal device 1 cannot transmit. This leads to a significant improvement. By using multiple slot resources, the number of LBTs is reduced, and efficiency is increased. This enables efficient operations.

[0129] Instead of the number of slots used in a single transmission being notified from the base station device 3 to the terminal device 1 as a parameter related to the sidelink, the number of slots used in a single transmission may be pre-configured for resource pools with different configurations. For example, resource pools with pre-configured slot counts for each transmission unit may be used between out-of-coverage terminal devices 1. For example, in a single transmission unit of mode 2... A resource pool with 2 slots may be pre-configured. For example, A resource pool with 3 slots used for one unit of transmission in Mode 2 may be pre-configured. For example, a resource pool with 4 slots used for one unit of transmission in Mode 2 may be pre-configured. For example, A resource pool with 6 slots may be pre-configured. For example, A resource pool with 8 slots used for one unit of transmission in Mode 2 may be pre-configured. For example, if the number of slots used for one unit of transmission in Mode 2 is 10... A resource pool for each lot may be pre-configured. Terminal device 1 selects a resource pool according to the priority of the data to be transmitted and selects and reserves resources in units of multiple slots.

[0130] 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.

[0131] 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.

[0132] 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:

[0133] The media access control layer processing unit (MAC layer processing unit) 35 activates the secondary cell. The Media Access Control Layer (MAC Layer) 35 generates MAC CEs (SCell Activation / Deactivation MAC CEs) that instruct activation / deactivation. The Media Access Control Layer (MAC Layer) 35 generates MAC CEs that instruct the activation / deactivation of secondary cells to multiple serving cells configured by the Wireless Resource Control Layer 36. Based on a timer, the Media Access Control Layer (MAC Layer) 35 deactivates the secondary cells. The media access control layer processing unit (MAC layer processing unit) 35 performs the operation on the serving cell. Conversely, the system determines, by measuring with a timer if scheduling has not occurred for a certain period, deactivates the serving cell, and controls the wireless transceiver 30.

[0134] The functions of the wireless transceiver 30 are the same as those of the wireless transceiver 10, so their explanation will be omitted as appropriate. The wireless transceiver 30 performs physical layer processing. Here, the physical layer processing may include some or all of the generation of baseband signals for physical channels, generation of baseband signals for physical signals, and detection of information transmitted by physical channels and detection of information transmitted by physical signals. The physical layer processing may also include mapping of transport channels to physical channels. Here, the baseband signal is also referred to as a time-continuous signal.

[0135] The wireless transceiver 30 may perform demodulation and / or decoding. The wireless transceiver 30 may deliver the transport block from the information detected based on the demodulation and decoding of the received physical signal to the upper layer on the UL-SCH. For example, the wireless transceiver 30 may generate the baseband signal of the downlink physical channel. Here, the transport block delivered from the upper layer on the DL-SCH may be placed on the downlink physical channel. For example, the wireless transceiver 30 may generate the baseband signal of the downlink physical signal.

[0136] The wireless transceiver 30 may perform some or all of the modulation, coding, and transmission processes. The wireless transceiver 30 may generate a physical signal based on some or all of the coding, modulation, and baseband signal generation processes applied to the transport block. The wireless transceiver 30 may place the physical signal in a BWP. The wireless transceiver 30 The generated physical signals may be transmitted. For example, the wireless transceiver 30 may attempt to detect information transmitted by the uplink physical channel. Here, the transport block of the information transmitted by the uplink physical channel may be delivered to the upper layer on the UL-SCH. For example, the wireless transceiver 30 may attempt to detect information transmitted by the uplink physical signals.

[0137] The wireless transceiver 30 grasps the SS (Search space) configured in the terminal device 1. The wireless transceiver 30 grasps the search area within the control resource set configured in the terminal device 1. The wireless transceiver 30 grasps the PDCCH candidates monitored in the terminal device 1. The search area is identified. The wireless transceiver 30 monitors each PDCCH candidate in the terminal device 1. Determine which control channel elements the auxiliary consists of (PDCCH candidate is composed of (The number of the control channel element is determined). The wireless transceiver 30 includes an SS finding unit, which finds the SS configured in the terminal device 1. The SS finding unit finds one or more PDCCH candidates in the control resource set, which is configured as the search space of the terminal device. SS finding unit This determines the number of PDCCH candidates (number of PDCCH candidates, PDCCH candidate numbers) configured in the search area of ​​the control resource set of terminal device 1.

[0138] The SS understanding unit determines the configuration of the search area within the control resource set (number of PDCCH candidates, number of PDCCH candidates) The OFDM symbol (Aggregation level of PDCCH candidate) is determined. The transmitting unit (transmission processing unit) of the wireless transceiver 30 sends the PDCCH candidate within the search area of ​​the control resource set to the terminal device 1. Use this to transmit PDCCH.

[0139] The transmitting unit (also called the transmitting processing unit) of base station device 3 transmits PDCCH. The transmission processing unit of base station device 3 transmits a PDCCH using a PDCCH candidate that is being monitored at terminal device 1. The transmission processing unit of base station device 3 transmits a PDCCH using a resource that corresponds to a PDCCH candidate within the search area set for terminal device 1. The transmission processing unit of base station device 3 transmits a PDCCH using a resource that corresponds to a PDCCH candidate within the search area set for terminal device 1. The PDCCH is transmitted using the PDCCH candidates in the search region where taring is performed.

[0140] The receiving unit (also called the receiving processing unit) of base station device 3 receives a HARQ-ACK. The receiving processing unit of base station device 3 receives a HARQ-ACK for PDSCH. The receiving processing unit of base station device 3 The base station device 3 receives HARQ-ACKs in the uplink frequency band (cell, component carrier, carrier). The receiving processing unit of the base station device 3 receives HARQ-ACKs for the PDSCH in the downlink frequency band (cell, component carrier, carrier) managed by the base station device 3. ru.

[0141] The receiving unit of base station device 3 receives sidelink HARQ-ACK from terminal device 1. Terminal device 1 receives the sidelink from the PSFCH received from terminal device 1 of the communication partner via sidelink. The HARQ-ACK information is transmitted to the base station device 3 using PUCCH.

[0142] The wireless transceiver 30 stops various receiving and transmitting processes in a deactivated serving cell. For example, the wireless transceiver 30 stops transmitting PDCCH in a deactivated serving cell. In the Gsell, PDSCH transmission is stopped. For example, the wireless transceiver 30 is deactivated. The SRS reception is stopped in the serving cell. For example, the wireless transceiver 30, Stop receiving PUSCH signals in deactivated serving cells.

[0143] The RF unit 32 may convert the signal received via the antenna unit 31 into a baseband signal and remove unwanted frequency components. The RF unit 32 outputs the baseband signal to the baseband unit 33.

[0144] The baseband section 33 may digitize the baseband signal input from the RF section 32. The baseband section 33 may remove the portion corresponding to CP (Cyclic Prefix) from the digitized baseband signal. The baseband section 33 then uses the baseband signal from which CP has been removed. Alternatively, a Fast Fourier Transform (FFT) can be applied to the sband signal to extract the signal in the frequency domain.

[0145] The baseband unit 33 may generate a baseband signal by performing an inverse fast Fourier transform (IFFT) on the physical signal. The baseband unit 33 may add a CP to the generated baseband signal. The baseband unit 33 may convert the baseband signal with the CP added into an analog. The baseband unit 33 may output the analogized baseband signal to the RF unit 32.

[0146] The RF unit 32 may remove extraneous frequency components from the baseband signal input from the baseband unit 33. The RF unit 32 may upconvert the baseband signal to the carrier frequency to generate an RF signal. The RF unit 32 may transmit the RF signal via the antenna unit 31. The RF unit 32 may also have a function to control the transmission power.

[0147] Each of the parts designated by reference numerals 10 to 16 in the terminal device 1 may be configured as a circuit. Each of the parts designated by reference numerals 30 to 36 in the base station device 3 may be configured as a circuit.

[0148] The following describes various aspects of the physical channels and physical signals (physical signals) according to this embodiment.

[0149] Physical signals are a collective term for downlink physical channels, downlink physical signals, uplink physical channels, and uplink physical channels. Physical channels are a collective term for downlink physical channels and uplink physical channels. Physical signals are a collective term for downlink physical signals and uplink physical signals.

[0150] An uplink physical channel may correspond to a set of resource elements that carry information generated in the upper layer. An uplink physical channel is a physical channel used in the uplink component carrier. An uplink physical channel may be transmitted by the wireless transceiver 10. An uplink physical channel may be received by the wireless transceiver 30. In a wireless communication system according to one aspect of this embodiment, at least some or all of the following uplink physical channels are used. ·PUCCH (Physical Uplink Control CHannel) ·PUSCH (Physical Uplink Shared CHannel) ·PRACH(Physical Random Access CHannel)

[0151] PUCCH transmits Uplink Control Information (UCI). It may be used for the purpose of (doing). Uplink control information may be placed in PUCCH. The line transmission / reception unit 10 may transmit a PUCCH containing uplink control information. The signal unit 30 may receive a PUCCH containing uplink control information.

[0152] Uplink control information (uplink control information bits, uplink control information sequence, uplink control information type) is channel state information (CSI), schedule Scheduling Request (SR), HARQ-ACK (Hybrid Automatic Repeat) This includes some or all of the request ACKnowledgement information. Note that the uplink control information may also include information not listed above.

[0153] Channel status information is also referred to as channel status information bits or channel status information sequences. Scheduling requests are also referred to as scheduling request bits or scheduling request sequences. HARQ-ACK information is also referred to as HARQ-ACK information bits or HARQ-ACK information sequences.

[0154] HARQ-ACK information may consist of HARQ-ACK bits corresponding to a single transport block (TB). HARQ-ACK bits may indicate either an ACK (acknowledgement) or a NACK (negative-acknowledgement) corresponding to the transport block. An ACK may indicate that the decoded transport block has been successfully completed. A NACK indicates that the decoded transport block has not been successfully completed. It may also indicate that it has not been decoded. The HARQ-ACK information may include one or more HARQ-ACK bits.

[0155] HARQ-ACK for transport blocks is also referred to as HARQ-ACK for PDSCH. Here, “HARQ-ACK for PDSCH” may refer to HARQ-ACK for the transport blocks included in the PDSCH.

[0156] A scheduling request may be used to request UL-SCH resources for initial transmission. The scheduling request bit is positive SR or This may be used to indicate any negative SR (scheduling). A positive SR in the Grease Request bit is also referred to as "a positive SR is transmitted." A positive SR may indicate that terminal device 1 is requesting UL-SCH resources for initial transmission. A negative SR in the Scheduling Request bit is also referred to as "a negative SR is transmitted." A negative SR may indicate that terminal device 1 is not requesting UL-SCH resources for initial transmission.

[0157] Channel status information includes the Channel Quality Indicator (CQI), and Pleco CQI may include some or all of the Precoder Matrix Indicator (PMI) and Rank Indicator (RI). CQI is a quality of the propagation path (e.g., propagation intensity). Alternatively, PMI is an indicator related to the quality of the physical channel, while PMI is an indicator related to the precoder. RI is an indicator related to the transmit rank (or transmit layer count).

[0158] Channel status information is an indicator of the reception status of the physical signal (e.g., CSI-RS) used for channel measurement. The value of the channel status information may be determined by terminal device 1 based on the reception status assumed by the physical signal used for channel measurement. Channel measurement may include interference measurement.

[0159] PUCCH may be accompanied by a PUCCH format, where the PUCCH format may be the format of the physical layer processing of PUCCH, or it may be the format of the information transmitted using PUCCH.

[0160] PUSCH provides uplink control information and one or both of the transport blocks. It may be transmitted for transmission. PUSCH transmits uplink control information, and transport It may be used to transmit one or both of the transformer blocks. It may be used to send at least some or all of the port block, HARQ-ACK, channel status information, and scheduling requests. PUSCH is a random action It is used at least to send message 3. PUSCH is not described above. It may be used to transmit information. Terminal device 1 may transmit uplink control information and a PUSCH containing one or both of the transport blocks. Station device 3 may receive uplink control information and PUSCH, which contains one or both of the transport blocks.

[0161] PRACH is an index for random access preambles (random access messages). It may be transmitted to convey (1). Terminal device 1 may transmit PRACH. The base station device 3 may receive PRACH. The terminal device 1 may transmit a random access preamble over PRACH. The base station device 3 transmits a random access preamble over PRACH. You may receive it.

[0162] Uplink physical signals may correspond to a set of resource elements. Uplink physical signals do not have to be used to transmit information generated in the upper layer. However, uplink physical signals may be used to transmit information generated in the physical layer. Uplink physical signals may also be physical signals used in the uplink component carrier. Wireless transceiver 10 may transmit uplink physical signals. Wireless transceiver 30 may receive uplink physical signals. In the uplink of a wireless communication system according to one aspect of this embodiment, some or all of the following uplink physical signals may be used. ·UL DMRS(UpLink Demodulation Reference Signal) ·SRS(Sounding Reference Signal) ·UL PTRS(UpLink Phase Tracking Reference Signal)

[0163] UL DMRS is a general term for DMRS for PUSCH and DMRS for PUCCH.

[0164] The set of antenna ports for a PUSCH (DMRS associated with a PUSCH, DMRS included in a PUSCH, DMRS corresponding to a PUSCH) is given based on the set of antenna ports for the PUSCH. It may be obtained. For example, for PUSCH The set of antenna ports for the DMRS is the same as the set of antenna ports for the PUSCH. That's good too.

[0165] The propagation path of a pusher may be estimated from the DMRS for that pusher.

[0166] 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.

[0167] The propagation path of PUCCH may be estimated from the DMRS for the PUCCH.

[0168] A downlink physical channel may correspond to a set of resource elements that transmit information generated in the upper layer. A downlink physical channel may also be a physical channel used in a downlink component carrier. The wireless transceiver 30 may transmit a downlink physical channel. The wireless transceiver 10 may receive a downlink physical channel. In the downlink of a wireless communication system according to one aspect of this embodiment, some or all of the following downlink physical channels may be used. ·PBCH(Physical Broadcast Channel) ·PDCCH (Physical Downlink Control Channel) ·PDSCH(Physical Downlink Shared Channel)

[0169] PBCH is transmitted to transmit either or both a Master Information Block (MIB) and / or physical layer control information. Here, physical layer control information is information generated at the physical layer. MIB is an RRC message delivered from a higher layer over the BCCH (Broadcast Control Channel).

[0170] PDCCH transmits Downlink Control Information (DCI). It is used for at least this purpose. Downlink control information may be placed in the PDCCH. End The terminal device 1 may receive the PDCCH containing downlink control information. The base station device 3 Alternatively, a PDCCH containing downlink control information may be transmitted.

[0171] Downlink control information may be transmitted in DCI format. The DCI format may be interpreted as the format of the downlink control information. Furthermore, the DCI format is... This may be interpreted as a set of downlink control information set in a certain downlink control information format.

[0172] Base station device 3 may notify terminal device 1 of downlink control information using PDCCH with DCI format. Here, terminal device 1 may monitor PDCCH to obtain downlink control information. Unless otherwise specified, DCI format and downlink control information may be described as equivalent. For example, base station device 3 may use DCI format The downlink control information may also be included in the packet and transmitted to the terminal device 1. Furthermore, the terminal device 1 uses the detected downlink control information contained in the DCI format to transmit the wireless transceiver 10 It may be controlled.

[0173] Downlink control information may include at least one of either a downlink grant (DL grant) or an uplink grant (UL grant). The DCI format used for PDSCH scheduling is the downlink DCI format. It is also called a set. The DCI format used for scheduling PUSCH is also called the uplink DCI format. Downlink grants are downlink assignments. It is also called a downlink assignment (DL assignment) or downlink allocation (DL allocation).

[0174] DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_1 are DCI formats. The uplink DCI format is a general term for DCI format 0_0, DCI format 0_1, etc. The downlink DCI format is a general term for DCI format 1_0, DCI format 1_1, etc. DCI format 0_0 is used for scheduling the PUSCH arranged in a certain cell. DCI format 0_0 is composed of at least a part or all of 1A to 1E.

[0175]

[0175] 1A) DCI format specific field (Identifier for DCI formats field) 1B) Frequency domain resource assignment field 1C) Time domain resource assignment field 1D) Frequency hopping flag field 1E) MCS field (Modulation and Coding Scheme field)

[0176] The DCI format specific field may indicate whether the DCI format including the DCI format specific field is an uplink DCI format or a downlink DCI format. That is, the DCI format specific field may be included in each of the uplink DCI format and the downlink DCI format. Here, the DCI format specific field included in DCI format 0_0 may indicate 0.

[0177] ​​​ The frequency domain resource allocation field included in DCI format 0_0 may be used to indicate the allocation of frequency resources for the PUSCH scheduled by the DCI format 0_0.

[0178] The time domain resource allocation field included in DCI format 0_0 may be used to indicate the allocation of time resources for the PUSCH scheduled by the DCI format 0_0.

[0179] The frequency hopping flag field may be used to indicate whether frequency hopping is applied to the PUSCH scheduled by the DCI format 0_0.

[0180] The MCS field included in DCI format 0_0 may be used to indicate one or both of the modulation scheme for the PUSCH scheduled by the DCI format 0_0 and the target coding rate for the PUSCH scheduled by the DCI format 0_1. The target coding rate may be the target coding rate for the transport block arranged on the PUSCH. The size (TBS: Transport Block Size) of the transport block arranged on the PUSCH may be determined based on part or all of the target coding rate and the modulation scheme for the PUSCH.

[0181] DCI format 0_0 may not include a field used for CSI requests (CSI requests). DCI format 0_0 may not include a carrier indicator field. DCI format 0_0 may not include a BWP field.

[0182] DCI format 0_1 ​​is used for scheduling PUSCH units to be placed in a cell. DCI format 0_1 ​​consists of some or all of the fields 2A through 2H. 2A) DCI Format Specific Fields 2B) Frequency Domain Resource Allocation Field 2C) Time Domain Resource Allocation Field 2D) Frequency Hopping Flag Field 2E) MCS Field 2F) CSI request field 2G) BWP field 2H) UL DAI field (downlink assignment index)

[0183] The DCI format specific field included in DCI format 0_1 ​​may indicate 0. .

[0184] The frequency domain resource allocation field included in DCI format 0_1 ​​is the DCI format -This may be used to indicate the allocation of frequency resources for PUSCH, which is scheduled by mat0_1.

[0185] The time domain resource allocation field included in DCI format 0_1 ​​is the DCI format This may be used to show the allocation of time resources for PUSCH, which is scheduled by mat0_1.

[0186] The MCS field included in DCI format 0_1 ​​is used in the schedule of DCI format 0_1. A modulation scheme for the PUSCH being routed, and the DCI format 0_1 ​​is used for scheduling Used to indicate one or both of the target coding rates for PUSCH being routed. may also be used.

[0187] The CSI request field may be used to indicate the CSI report.

[0188] The BWP field of DCI format 0_1 may be used to indicate the uplink BWP in which the PUSCH scheduled by the DCI format 0_1 is located. That is, the DCI format 0_1 may or may not be accompanied by a change in the active uplink BWP. The terminal device 1 may detect the DCI format 0_1 used for scheduling the PUSCH and recognize the uplink BWP in which the PUSCH is located based on this.

[0189] When the DCI format 0_1 includes a carrier indicator field, the carrier indicator field may be used to indicate the serving cell of the uplink component carrier in which the PUSCH is located. The terminal device 1 may detect the DCI format 0_1 in the downlink component carrier of a certain serving cell and recognize that the PUSCH scheduled by the DCI format 0_1 is located in the uplink component carrier of the serving cell indicated by the carrier indicator field included in the DCI format 0_1.

[0190] When the DCI format 0_1 does not include a carrier indicator field, the serving cell to which the uplink component carrier in which the PUSCH scheduled by the DCI format 0_1 is located belongs is the serving cell in which the PDCCH including the DCI format 0_1 is located. ​​​​It may be the same as the serving cell of the downlink component carrier. Terminal device 1 has a DCI format in a downlink component carrier of a serving cell Based on the detection of 0_1, it may be recognized that a PUSCH scheduled by the DCI format 0_1 ​​is placed on the uplink component carrier of a certain serving cell.

[0191] The UL DAI field is used to indicate the transmission status of the PDSCH. If a Dynamic HARQ-ACK codebook is used, the size of the UL DAI field may be 2 bits. The UL DAI field indicates the size of the HARQ-ACK codebook transmitted by the PUSCH. The UL DAI field indicates the number of HARQ-ACKs included in the HARQ-ACK codebook transmitted by the PUSCH. The UL DAI field indicates the number of PDSCHs in which the corresponding HARQ-ACKs are included in the HARQ-ACK codebook transmitted by the PUSCH. The UL DAI field indicates the number of PDSCHs and SPS releases in which the corresponding HARQ-ACKs are included in the HARQ-ACK codebook transmitted by the PUSCH.

[0192] The UL DAI field may indicate the value after applying modulo arithmetic. An example where the UL DAI field is 2 bits is described below. If the number of PDSCHs containing the corresponding HARQ-ACK in the HARQ-ACK codebook sent by PUSCH is 0, then "00" is indicated as the UL DAI field. The HARQ-ACK codebook sent via PUSCH includes the corresponding HARQ-ACK. If the number is 1, "01" is indicated as the UL DAI field. If the number of PDSCHs that include the corresponding HARQ-ACK in the HARQ-ACK codebook sent by PUSCH is 2, the UL DAI field The value "10" is shown as the UL DAI field. If there are three PDSCHs in the HARQ-ACK codebook sent via PUSCH that contain the corresponding HARQ-ACK, the value "11" is shown as the UL DAI field. The number of PDSCHs that include the corresponding HARQ-ACK in the HARQ-ACK codebook sent via PUSCH. If there are 4, the UL DAI field will be "00". If there are 5 PDSCHs in the HARQ-ACK codebook sent by PUSCH that contain the corresponding HARQ-ACK, the UL DAI field will be "01" is shown as the value. If the HARQ-ACK codebook sent via PUSCH contains 6 PDSCHs with corresponding HARQ-ACKs, "10" is shown as the UL DAI field. If the HARQ-ACK codebook sent via PUSCH contains 7 PDSCHs with corresponding HARQ-ACKs, "11" is shown as the UL DAI field. In this example, for the number of PDSCHs that contain corresponding HARQ-ACKs in the HARQ-ACK codebook sent via PUSCH, the numerical value '4 Modulo operations are performed using '.

[0193] Terminal device 1 interprets the UL DAI field considering the total number of PDSCH received. For example Terminal device 1 has received four PDSCH signals and received a UL DAI field indicating "00". In this case, terminal device 1 interprets that the number of PDSCHs containing the corresponding HARQ-ACKs in the HARQ-ACK codebook transmitted via PUSCH, as indicated by the UL DAI field, is four. For example, terminal device 1 receives three PDSCHs and the UL DAI field indicates “00”. It receives. In this case, terminal device 1 receives the PUSCH message, which is indicated by the UL DAI field. The system interprets the HARQ-ACK codebook as containing four PDSCHs with corresponding HARQ-ACKs, and determines that it missed receiving one PDSCH.

[0194] DCI format 1_0 is used for scheduling PDSCHs placed in a cell. DCI format 1_0 consists of some or all of 3A through 3F. 3A) DCI Format Specific Fields 3B) Frequency Domain Resource Allocation Field 3C) Time Domain Resource Allocation Field 3D) MCS Field 3E) PDSCH to HARQ feedback timing indicator field 3F) PUCCH resource indicator field

[0195] The DCI format specific field included in DCI format 1_0 may indicate 1. .

[0196] The frequency domain resource allocation field included in DCI format 1_0 is the DCI format - Shows the allocation of frequency resources for PDSCH scheduled by MAT. It may be used for that purpose.

[0197] The time domain resource allocation field included in DCI format 1_0 is the DCI format To demonstrate the allocation of time resources for PDSCH scheduled by Matt. It may be used for this purpose.

[0198] The MCS field included in DCI format 1_0 may be used to indicate either or both the modulation scheme for the PDSCH scheduled by the DCI format, and the target coding rate for the PDSCH scheduled by the DCI format. Good. The target coding rate is for the transport block placed in the PDSCH. The GET coding rate may also be used. The size of the transport block (TBS) placed in the PDSCH is determined by the target coding rate and the modulation scheme for the PDSCH. The decision may be based on one or both of the following.

[0199] The PDSCH_HARQ feedback timing indicator field is the last OFDM symbol of the PDSCH. From the slot containing the symbol to the slot containing the leading OFDM symbol of PUCCH, It may be used to indicate timing from PDSCH to HARQ feedback. The indicated field may be a field indicating timing K1. The last OFDM sequence of PDSCH If the index of the slot containing the 'nbol' is slot n, then the index of the slot containing the PUCCH or PUSCH that contains at least the HARQ-ACK corresponding to the transport block contained in the PDSCH may be n+K1. The last OFDM symbol of the PDSCH is included. If the slot index is slot n, the transport included in the PDSCH The index of the slot containing the leading OFDM symbol of PUCCH or the leading OFDM symbol of PUSCH, which contains at least one HARQ-ACK corresponding to the lock, may be n+K1.

[0200] The PDSCH_HARQ feedback timing instruction field is used for PDSCH-to-HARQ feedback This may also be referred to as the PDSCH-to-HARQ_feedback timing indicator field, or the HARQ instruction field.

[0201] The PUCCH resource instruction field may be used to indicate a PUCCH resource.

[0202] DCI format 1_1 is used for scheduling PDSCHs placed in a cell. DCI format 1_1 consists of some or all of 4A through 4I. 4A) DCI Format Specific Fields 4B) Frequency Domain Resource Allocation Field 4C) Time Domain Resource Allocation Field 4E) MCS Field 4F) PDSCH_HARQ Feedback Timing Indicator Field 4G)PUCCH resource instruction field 4H) BWP Field 4I) Carrier Indicator Field

[0203] The DCI format specific field included in DCI format 1_1 may indicate 1. .

[0204] The frequency domain resource allocation field included in DCI format 1_1 is the DCI format - May be used to show the allocation of frequency resources for PDSCH scheduled by mat1_1.

[0205] The time domain resource allocation field included in DCI format 1_1 is the DCI format This may be used to show the allocation of time resources for PDSCH scheduled by mat1_1.

[0206] The MCS field included in DCI format 1_1 is used in the schedule of DCI format 1_1. A modulation scheme for a PDSCH to be routed, and a schedule according to the DCI format 1_1. Used to indicate one or both of the target coding rates for the PDSCH being routed. It's okay if it's done that way.

[0207] If DCI format 1_1 includes a PDSCH_HARQ feedback timing indicator field, then the PDSCH_HARQ feedback timing indicator field is used for the last OFDM of the PDSCH. From the slot containing the 'Nbol' to the slot containing the leading OFDM symbol of PUCCH It may be used to indicate an offset. If DCI format 1_1 does not include the PDSCH_HARQ feedback timing indicator field, the last OFDM symbol of the PDSCH is included. This indicates the offset from the slot containing the first OFDM symbol of PUCCH to the slot containing the first OFDM symbol of PUCCH. The parameters may be provided by the RRC layer.

[0208] The PUCCH resource instruction field may be used to indicate a PUCCH resource.

[0209] The BWP field of DCI format 1_1 is used for scheduling according to DCI format 1_1. It may be used to indicate the downlink BWP where the PDSCH being linked is located. In other words, DCI Format 1_1 may or may not involve a change in the active downlink BWP. Terminal device 1 detects DCI format 1_1 used for PDSCH scheduling. Based on this, the PDSCH may recognize the downlink BWP on which it is located.

[0210] A DCI format 1_1 that does not include the BWP field may be a DCI format that schedules the PDSCH without changing the active downlink BWP. Based on the detection of a DCI format 1_1 that is used for scheduling the PDSCH and does not include the BWP field, the terminal device 1 changes the active downlink BWP. It is acceptable to recognize that the PDSCH is being received without performing a replacement.

[0211] If DCI format 1_1 includes a carrier indicator field, the carrier indicator field is used to indicate the serving cell of the downlink component carrier where the PDSCH scheduled by DCI format 1_1 is located. It may be done. Terminal device 1 detects DCI format 1_1 in the downlink component carrier of a serving cell, and based on this, PDSCH scheduled by the DCI format 1_1 is the carrier indicator included in the DCI format 1_1. It may be recognized that it is positioned on the downlink component carrier of the serving cell indicated by the field.

[0212] If DCI format 1_1 does not include a carrier indicator field, DCI format - Downlink component where PDSCH scheduled by Mat 1_1 is located The carrier is a downlink component on which the PDCCH containing the DCI format 1_1 is located. It may be the same as the downlink component carrier. Terminal device 1 detects DCI format 1_1 on a certain downlink component carrier and recognizes that PDSCH scheduled by DCI format 1_1 will be placed on the downlink component carrier. It is acceptable to be aware of this.

[0213] Downlink grants scheduling for one PDSCH within one serving cell. It is used at least for the following purposes. Downlink grants are used at least for scheduling PDSCHs in the same slot from which the downlink grant was transmitted. A downlink grant may be used for scheduling a PDSCH in a slot different from the slot from which the downlink grant was transmitted. An uplink grant is one It is used at least for scheduling one PUSCH within the serving cell.

[0214] Note that various DCI formats include additional fields different from those mentioned above. It may also include a field indicating the cumulative number of PDCCHs sent (C-DAI: Counter Downlink Assignment Index field). It may also include a field indicating the total number of PDCCHs sent (T-DAI: Total Downlink Assignment Index field).

[0215] A PDSCH may be transmitted to transmit a transport block. A PDSCH may be used to transmit a transport block. A transport block may be placed on a PDSCH. Base station device 3 may transmit a PDSCH on which a transport block is placed. Terminal device 1 receives a PDSCH on which a transport block is placed. That's good too.

[0216] Downlink physical signals may correspond to a set of resource elements. Downlink physical signals do not have to be used to transmit information generated in the upper layer. However, downlink physical signals may be used to transmit information generated in the physical layer. Downlink physical signals may also be physical signals used in the downlink component carrier. Wireless transceiver 10 may receive downlink physical signals. Wireless transceiver 30 may transmit downlink physical signals. In the downlink of a wireless communication system according to one aspect of this embodiment, at least some or all of the following downlink physical signals may be used. ·Synchronization signal (SS) ·DL DMRS(DownLink DeModulation Reference Signal) ·CSI-RS(Channel State Information-Reference Signal) ·DL PTRS(DownLink Phase Tracking Reference Signal)

[0217] The synchronization signal is used by terminal device 1 to synchronize the downlink in the frequency domain and / or time domain. The synchronization signal is the PSS (Primary Synchronization Signal), and This is a general term for Secondary Synchronization Signals (SSS).

[0218] SS blocks (SS / PBCH blocks) are a combination of PSS, SSS, and PBCH, some or all of which are less than SS blocks. It is composed of including and.

[0219] The antenna ports for PSS, SSS, PBCH, and DMRS for PBCH may be the same.

[0220] A PBCH whose symbol is transmitted at a certain antenna port is a DMRS for a PBCH located in the slot to which the PBCH is mapped, and the SS / PBCH block containing the PBCH. It may be estimated by the DMRS for the PBCH included in the

[0221] DL DMRS is the sum of DMRS for PBCH, DMRS for PDSCH, and DMRS for PDCCH. It is a title.

[0222] The set of antenna ports for DMRS for PDSCH (DMRS associated with PDSCH, DMRS included in PDSCH, DMRS corresponding to PDSCH) is given based on the set of antenna ports for said PDSCH. It may be obtained. For example, the set of antenna ports for a DMRS for a PDSCH may be the same as the set of antenna ports for the PDSCH.

[0223] The propagation path of a PDSCH may be estimated from the DMRS for that PDSCH. A set of resource elements on which the signal is transmitted, and a DMRS symbol for the PDSCH. If the set of resource elements on which the symbol is transmitted belongs to the same Precoding Resource Group (PRG), the PDSCH on which the symbol of that PDSCH is transmitted at a given antenna port may be estimated by the DMRS for that PDSCH.

[0224] The antenna port for the DMRS for PDCCH (DMRS associated with PDCCH, DMRS included in PDCCH, DMRS corresponding to PDCCH) may be the same as the antenna port for PDCCH.

[0225] The propagation path of a PDCCH may be estimated from the DMRS for that PDCCH. A set of resource elements on which the signal is transmitted, and a DMRS symbol for the PDCCH. If the same precoder is applied (or assumed to be applied) to a set of resource elements on which the symbol is transmitted, the PDCCH on which the symbol of that PDCCH is transmitted at a given antenna port may be estimated by the DMRS for that PDCCH.

[0226] BCH (Broadcast Channel), UL-SCH (Uplink-Shared Channel), and DL-SCH (Downlink-Shared Channel) are transport channels.

[0227] The BCH in the transport layer may be mapped to the PBCH in the physical layer. Transport blocks delivered from higher layers to the BCH in the physical layer are placed in the PBCH in the physical layer. It may also be done. Furthermore, the UL-SCH in the transport layer may be mapped to the PUSCH in the physical layer. stomach.

[0228] The transport layer may apply HARQ (Hybrid Automatic Repeat reQuest) to the transport block.

[0229] BCCH (Broadcast Control Channel), CCCH (Common Control Channel), and DCCH (Dedicated Control Channel) are logical channels. For example, BCCH is used to manage MIBs. CCCH may be used to deliver RRC messages containing RRC information or RRC messages containing system information. CCCH may also be used to send RRC messages containing common RRC parameters across multiple terminal devices 1. Here, CCCH may be used, for example, at terminals that are not RRC connected. It may be used for terminal device 1. Also, DCCH may be used for a dedicated RRC message to a terminal device 1. It may be used to transmit a message. Here, DCCH is, for example, RRC connected. It may be used for terminal device 1.

[0230] BCCH may be mapped to BCH or DL-SCH. In other words, RRC containing MIB information Messages may be delivered to BCH. Also, RRC messages containing system information other than MIBs may be delivered. The message may be delivered to DL-SCH. Also, CCCH is mapped to DL-SCH or UL-SCH. In other words, an RRC message mapped to CCCH may be delivered to DL-SCH or UL-SCH. Furthermore, DCCH may be mapped to DL-SCH or UL-SCH. In other words, an RRC message mapped to DCCH may be delivered to DL-SCH or UL-SCH.

[0231] UL-SCH may be mapped to PUSCH. DL-SCH may be mapped to PDSCH. BCH It may be mapped to PBCH.

[0232] The media access control layer processing unit 15 may perform a random access procedure.

[0233] For example, downlink control information, including downlink grants or uplink grants, is transmitted and received via the PDCCH, including the C-RNTI (Cell-Radio Network Temporary Identifier).

[0234] One physical channel may be mapped to one serving cell. One physical channel may be mapped to one BWP configured to one carrier contained within one serving cell. It may also be used.

[0235] Terminal device 1 may have one or more control resource sets (CORESET) configured. Terminal device 1 may have PDCCH in one or more control resource sets. Monitors the PDCCH. Here, monitoring a PDCCH in one or more control resource sets may include monitoring one or more PDCCHs corresponding to each of the one or more control resource sets. Note that a PDCCH is one or more PDCCH candidates and / or may include a set of PDCCH candidates. Also, monitoring PDCCH is PDCCH, This may also include monitoring and detecting the DCI format transmitted via PDCCH.

[0236] Multiple control resource sets may be configured in terminal device 1, and each control resource set may be assigned an index (control resource set index). One or more control channel elements (CCEs) may be configured within a control resource set, and each CCE may be assigned an index (CCE index).

[0237] The set of PDCCH candidates monitored by terminal device 1 is defined in terms of the search space. The set of candidates is given by the search domain.

[0238] The search region may consist of one or more PDCCH candidates at one or more aggregation levels. The aggregation level of the PDCCH candidate is the number of CCEs that make up the PDCCH. This may be shown. The PDDCH candidate may be mapped to one or more CCEs.

[0239] A set of search regions may consist of at least one or more search regions. Each search region may be assigned an index (search region index).

[0240] Each of the search area sets may be associated with at least one control resource set. Each of the search area sets may be contained within one control resource set. Each of the search area sets may be given an index of the control resource set associated with that search area set.

[0241] Terminal device 1 performs a blind search for PDCCH candidates included in the search area within the control resource set. By doing so, the PDCCH and / or DCI for the terminal device 1 can be detected.

[0242] In various embodiments of this embodiment, unless otherwise specified, the number of resource blocks indicates the number of resource blocks in the frequency domain.

[0243] Terminal device 1 transmits uplink control information (UCI) to base station device 3. The UCI may be multiplexed and transmitted to PUCCH. Terminal device 1 may also transmit the UCI by multiplexing it to PUSCH. The UCI may include at least one of the following: Channel State Information (CSI), Scheduling Request (SR) indicating a request for PUSCH resources, and HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement) for downlink data (Transport block, Medium Access Control Protocol Data Unit: MAC PDU, Downlink-Shared Channel: DL-SCH, Physical Downlink Shared Channel: PDSCH).

[0244] HARQ-ACK is also known as ACK / NACK, HARQ feedback, HARQ-ACK feedback, HARQ response, HARQ-ACK response, HARQ information, HARQ-ACK information, HARQ control information, and HARQ-ACK control information. It is acceptable to refer to it by that name.

[0245] If the data is successfully decoded, an ACK is generated for that data. If the data is not decoded on the reverse side, a NACK is generated for that data. A HARQ-ACK may include at least one HARQ-ACK bit corresponding to at least one transport block. A HARQ-ACK bit may indicate an ACK (ACKnowledgement) or a NACK (Negative-ACKnowledgement) corresponding to one or more transport blocks. A HARQ-ACK is a HARQ-ACK codebook containing one or more HARQ-ACK bits. It may include at least one. The HARQ-ACK bits corresponding to one or more transport blocks may correspond to a PDSCH containing the one or more transport blocks.

[0246] HARQ control for a single transport block may be called a HARQ process. Each HARQ process may be assigned a unique HARQ process identifier. It includes a field that indicates the process identifier (HARQ process number).

[0247] An NDI (New Data Indicator) is shown in DCI format for each HARQ process. For example, the DCI format (DL assignment) containing the scheduling information of the PDSCH includes an NDI field. The NDI field is 1 bit. Terminal device 1 stores (remembers) the NDI value for each HARQ process. Base station device 3 stores (remembers) the NDI value for each HARQ process for each terminal device 1. Terminal device 1 receives the detected NDI field in DCI format. The base station device 3 updates the stored NDI value using a RD. The base station device 3 sets the updated NDI value, or the NDI value that has not been updated, into the NDI field in DCI format and sends it to the terminal device 1. I believe. Terminal device 1 detects the HARQ process identifier field in DCI format. For the HARQ process corresponding to the value, update the stored NDI value using the detected DCI-formatted NDI field.

[0248] Terminal device 1 receives based on the value of the NDI field in DCI format (DL assignment). Determine whether the transmitted transport block is a new transmission or a retransmission. Terminal device 1 determines the previously received NDI value for a transport block of a certain HARQ process. By comparing it with the value of the NDI field in the detected DCI format, if the value of the NDI field is toggled, it is determined that the received transport block is a new transmission. When base station device 3 transmits a transport block of a new transmission in a certain HARQ process, it toggles the value of the NDI stored for that HARQ process and sends the toggled NDI to terminal device 1. When base station device 3 transmits a transport block of a retransmission in a certain HARQ process, it does not toggle the value of the NDI stored for that HARQ process and sends the untoggled NDI to terminal device 1. Terminal device 1 compares the value of the NDI field in the detected DCI format with the value of the NDI field previously received for a transport block of a certain HARQ process, and If not toggled (if the same), the received transport block is retransmitted. It is determined that it exists. Note that "toggle" here means switching to a different value.

[0249] Terminal device 1 receives HARQ-ACK information in a slot indicated by the value of the HARQ instruction field included in DCI format 1_0 or DCI format 1_1, which corresponds to PDSCH reception. This may be reported to base station device 3 using the HARQ-ACK codebook.

[0250] For DCI format 1_0, the value of the HARQ instruction field may be mapped to a set of slot numbers (1, 2, 3, 4, 5, 6, 7, 8). For DCI format 1_1, the value of the HARQ instruction field is mapped to a slot given by the upper layer parameter dl-DataToUL-ACK. It may be mapped to a set of numbers. The number of slots indicated, at least based on the value of the HARQ instruction field, may also be called the HARQ-ACK timing or K1. For example, the HARQ-ACK representing the decoded state of the PDSCH (downlink data) transmitted in slot n may be reported (transmitted) in slot n+K1.

[0251] dl-DataToUL-ACK lists the timings for HARQ-ACKs to PDSCHs. Timing refers to the slot in which a HARQ-ACK is sent for a received PDSCH, relative to the slot in which the PDSCH was received (or the slot containing the last OFDM symbol to which the PDSCH is mapped). This is the number of slots between them. For example, dl-DataToUL-ACK can be 1, 2, or 3. It is a list of 1, 4, 5, 6, 7, or 8 timings. If Dl-DataToUL-ACK is a list of 1 timing, the HARQ instruction field is It is 0 bits. If Dl-DataToUL-ACK is a list of two timings, the HARQ instruction fee The DD is 1 bit. In the case of a list of 3 or 4 Dl-DataToUL-ACKs In total, the HARQ instruction field is 2 bits. There are 5 or 6 Dl-DataToUL-ACKs, and If it is a list of 7 or 8 timings, the HARQ instruction field is 3 bits. For example, dl-DataToUL-ACK is a list of timings with values ​​in the range of 0 to 31. It is composed of the following. For example, dl-DataToUL-ACK is a timing of any value in the range of 0 to 63. It consists of a list of items.

[0252] The size of dl-DataToUL-ACK is defined as the number of elements that dl-DataToUL-ACK contains. The size of Dl-DataToUL-ACK is L para It may also be called . The index of dl-DataToUL-ACK indicates the order (number) of the elements of dl-DataToUL-ACK. For example, if the size of dl-DataToUL-ACK is 8 (L para =8) In this case, the index of dl-DataToUL-ACK is 1, 2, 3, 4, The value is one of 5, 6, 7, or 8. The index of dl-DataToUL-ACK is HARQ The value indicated by the indicator field may be given, indicated, or indicated by the value indicated by the indicator field.

[0253] Terminal device 1 may set the size of the HARQ-ACK codebook according to the size of dl-DataToUL-ACK. For example, if dl-DataToUL-ACK consists of 8 elements, the size of the HARQ-ACK codebook is 8. For example, if dl-DataToUL-ACK consists of 2 elements, the size of the HARQ-ACK codebook is 2. Each HARQ-ACK piece of information constituting the HARQ-ACK codebook is HARQ-ACK information for PDSCH reception at each slot timing of dl-DataToUL-ACK. The HARQ-ACK codebook is a semi-static HARQ-ACK codebook. It is also called ).

[0254] Terminal device 1 may report HARQ-ACK information for PDSCH reception in slot n using PUCCH transmission and / or PUSCH transmission in slot n+k. Here, k is the PDSCH reception Slots indicated by the HARQ instruction field included in the corresponding DCI format It can also be a number. Also, if the HARQ instruction field is not included in the DCI format, k is This may be provided by the upper-layer parameter dl-DataToUL-ACK.

[0255] Terminal device 1 transmits one or more HARQ-ACK information corresponding to a PUCCH in a certain slot. The terminal device 1 determines a set of multiple opportunities for candidate PDSCH reception. The terminal device 1 determines multiple slots of slot timing K1 included in dl-DataToUL-ACK as multiple opportunities for candidate PDSCH reception. This is the determination. K1 may be a set of k. For example, if dl-DataToUL-ACK is (1, 2, 3, 4, 5, 6, 7, 8), then the PUCCH of slot n will receive the PDSCH of slot n-1, n-2 HARQ-ACK information is transmitted for PDSCH reception in slots n-1, n-3, n-4, n-5, n-6, n-7, and n-8. Terminal device 1 sets an ACK or NACK as HARQ-ACK information based on the transport block contained in the PDSCH if it actually receives a PDSCH in a slot corresponding to a candidate PDSCH reception, and sets a NACK as HARQ-ACK information if it does not receive a PDSCH in a slot corresponding to a candidate PDSCH reception. do.

[0256] The HARQ-ACK codebook may be given based on at least some or all of the set of monitoring occasions for PDCCH, and the values ​​of the counter DAI field. The HARQ-ACK codebook may be given based on the value of the UL DAI field. The HARQ-ACK codebook may be given based on the value of the DAI field. The value of the total DAI field may be given based on the total DAI field value.

[0257] The size of the HARQ-ACK codebook is the last received DCI format counter DAI file. It may be set based on the field value. The counter DAI field is the cumulative number of PDSCH or transport blocks scheduled until the reception of the corresponding DCI format. The product is shown. The size of the HARQ-ACK codebook is the total DAI field in DCI format. It may be set based on the value of . The Total DAI field indicates the total number of PDSCHs, or transport blocks, scheduled before sending the HARQ-ACK codebook.

[0258] Terminal device 1 monitors a set of PDCCH monitoring opportunities for HARQ-ACK information transmitted in PUCCH located in slot (slot#n) of index n, based on the value of timing K1, and The determination may be based on at least part or all of the value of lot offset K0. Monitoring of PDCCH for HARQ-ACK information transmitted in PUCCH located in slot n of index n. A set of monitoring opportunities is also referred to as a set of monitoring occasions for PDCCH for slot #n. Here, the set of monitoring occasions for PDCCH includes M monitoring occasions for PDCCH. For example, slot offset K0 may be indicated based on at least the value of the time-domain resource allocation field included in the downlink DCI format. Slot offset K0 is a value indicating the number of slots (slot difference) from the slot containing the last OFDM symbol in which a PDCCH containing a DCI format containing the time-domain resource allocation field indicating the slot offset K0 is placed, to the first OFDM symbol of the PDCCH scheduled by the DCI format.

[0259] Detected in a monitoring opportunity in any of the search region sets corresponding to a certain PDCCH monitoring opportunity If the DCI format detected triggers (includes triggering information) the transmission of HARQ-ACK information in slot n, terminal device 1 may determine the PDCCH monitoring opportunity as a PDCCH monitoring opportunity for slot n. Also, if the DCI format detected in the monitoring opportunity of the search area set corresponding to a PDCCH monitoring opportunity does not trigger (does not include triggering information) the transmission of HARQ-ACK information in slot n, terminal device 1 may determine the PDCCH It is not necessary to determine the monitoring opportunity as the PDCCH monitoring opportunity for slot n. Also, for a certain PDCCH DCI format is not detected in the monitoring opportunity for the search area set corresponding to the monitoring opportunity. In this case, terminal device 1 determines the PDCCH monitoring opportunity as the PDCCH monitoring opportunity for slot n. It's fine.

[0260] The Counter DAI (Counter DAI) is calculated for each of the M PDCCH monitoring opportunities, for each PDCCH monitoring opportunity in a given serving cell, by the cumulative number of PDCCHs detected up to that monitoring opportunity in that serving cell (or at least a value related to the cumulative number). (i) is shown. The counter DAI may also be called C-DAI. The C-DAI corresponding to a PDSCH may be shown by a field included in the DCI format used for scheduling the PDSCH. The total DAI is calculated for M PDCCH monitoring opportunities, up to m PDCCH monitoring opportunities. The cumulative number of PDCCHs detected (or a value at least related to the cumulative number) ) may also be shown. Total DAI is called T-DAI (Total Downlink Assignment Index). It may also be used.

[0261] Physical signals are also a general term for sidelink physical channels and sidelink physical signals. Physical channels are also a general term for sidelink physical channels. Physical signals are also a general term for sidelink physical signals.

[0262] A sidelink physical channel may correspond to a set of resource elements that carry information generated in the upper layer. A sidelink physical channel is a physical channel used in a sidelink. A sidelink physical channel may be transmitted by the wireless transceiver 10. A sidelink physical channel may be received by the wireless transceiver 10. In a wireless communication system according to one aspect of this 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)

[0263] PSBCH includes DFN (Direct Frame Number), TDD UL-DL configuration, slot index (slot index of the slot where the PSBCH is placed), and coverage indicator. It is transmitted to convey a data (an identifier indicating whether the transmitting terminal device 1 is located within the coverage of the base station device 3).

[0264] 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.

[0265] 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 DM RS pattern, and 2 nd A field indicating the stage SCI format (SCI format 2-A, SCI format 2-B), beta offset (2 nd This field includes a field indicating the parameters used to determine the resource amount of the stage SCI, a field indicating the number of DM RS ports, a field indicating the MCS, a field indicating the MCS table, and a field including the PSFCH overhead indication.

[0266] 2 nd Stage 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) SCI format 2-B includes information on HARQ process number, NDI, RV, Source ID, Destination ID, and HARQ feedback. Includes enable / disable indicator, Zone ID, and communication range request information.

[0267] 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.

[0268] 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.

[0269] PSFCH consists of a common resource (common interlace) which is a resource common to multiple terminal devices 1, and / or a dedicated resource (individual PRB) which is a resource specific to each terminal device 1. For example, if the same resource pool is set up Multiple designated terminal devices 1 use the same common resource. Signals generated from HARQ-ACK information are placed in individual resources. Signals not generated from HARQ-ACK information are placed in the common resource. In the licensed band, PSFCH can be used even if only individual resources are used. Good. In the unlicensed band, PSFCH only allows individual resources, or individual resources Common resources may be used.

[0270] A single individual resource is, for example, a single physical resource block (resource block) It is composed of: One common resource consists of multiple physical resource blocks (interlaces) distributed within the channel bandwidth (LBT bandwidth). One PSFCH has one individual resource One or more individual resources are used. Individual resources are implicitly or explicitly instructed to terminal device 1. For example, the resource of an individual resource is determined based at least on the index of the subchannel in which PSCCH and PSSCH are configured. For example, the resource of an individual resource is determined based at least on the index of the subchannel in which PSSCH is configured. The number is determined. For example, the index of the slot where PSSCH is placed is determined to be at least one base Based on this, the resources of individual resources are determined. For example, 1 st Stage SCI for individual resources Resources are specified. For example, 2 nd In stage SCI, the resources of individual resources are specified. Common resources are pre-configured. Common resources are configured with a specific interlace within the resource pool (for example, the smallest interlace in the interlace index).

[0271] 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 DM RS • Sidelink CSI-RS • Sidelink PT-RS

[0272] 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).

[0273] Sidelink DM RS is a general term for DM RS for PSBCH, DM RS for PSCCH, and DM RS for PSSCH. The time-domain pattern of DM RS for PSSCH is determined by the transmitting terminal equipment. Selected by 1. The candidate time-domain patterns are configured for each resource pool.

[0274] 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.

[0275] 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.

[0276] A signal for AGC (Access Gain Control) may be used. The AGC signal is for the slot The signal for AGC may be placed on the first OFDM symbol. It may be placed on the base station. The OFDM symbol on which the AGC signal is placed is from base station device 3. It may be configured for terminal device 1. An OFDM symbol on which the AGC signal is placed is preconfigured It may be done.

[0277] 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.

[0278] The base station device 3 may notify the terminal device 1 of the sidelink scheduling information using DCI format. DCI format 3_0 is used for scheduling PSCCH and PSSCH. DCI format 3_0 consists of some or all of the following information: • 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

[0279] The resource pool index indicates the resource pool used for the scheduled PSCCH and PSSCH. The time gap indicates the time from receiving DCI format 3_0 to performing the sidelink transmission. The subchannel allocation information indicates the subchannel used for the scheduled PSCCH and PSSCH. The SCI format 1_A field indicates that terminal device 1 is PSCCH The SCI format 1_A transmitted includes information on frequency resource allocation and time resource allocation. The timing indicator that feeds back the HARQ-ACK of the PSSCH corresponding to PSFCH reception uses the HARQ-ACK information acquired when terminal device 1 receives the PSFCH from the other terminal device 1 as PUC. The CH is used to indicate the timing of feedback. The PUCCH resource indicator shows the PUCCH resources used for feedback of HARQ-ACK information obtained by receiving PSFCH. The configuration index indicates the configuration of the sidelink configured grant. The sidelink allocation index counter indicates the number of sidelink allocations that base station device 3 has allocated to terminal device 1 within a certain interval.

[0280] 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.

[0281] 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.

[0282] 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. .

[0283] 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, approximately seven sensing slots are configured in the defer interval. If terminal device 1 determines that the channel is busy in the 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 the 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.

[0284] 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.

[0285] In Sidelink resource allocation mode 2, the number of resources to be reserved is set or preconfigured by RRC signaling. The reserved resources are the second or third unit of resources in a series of resources, excluding the first unit of resources (resources in multiple consecutive slots). The interval (in milliseconds) between the first and second unit of resources, and the interval between the second and third unit of resources, are set or preconfigured by RRC signaling.

[0286] In Mode 2, if the RSRP of a PSSCH or PSCCH transmitted and detected by another terminal device 1 is greater than the set value, terminal device 1 reserves the corresponding PSSCH or PSCCH. The resource is excluded from the resources selected and reserved by terminal device 1.

[0287] To utilize unlicensed spectrum, certain restrictions must be met. For example, according to the regulations of the European Telecommunications Standards Institute (ETSI), 5GHz is one of the unlicensed spectrum. Regarding its use, the Occupied Channel Bandwidth (OCB), which includes 99% of the signal's power, must be at least 80% of the available bandwidth (e.g., system bandwidth, LBT subband bandwidth, subband bandwidth). Furthermore, there are constraints on the maximum transmit power density (PSD) per given bandwidth (1 MHz). This is stipulated.

[0288] To satisfy these constraints (for example, OCB rules), an unlicensed carrier, Transmission is performed using a set of multiple frequency domain resources at fixed intervals (also called interlaces, RB sets, etc.) (interlaced transmission). One interlace is at a predetermined frequency interval ( For example, it may be defined as a set of multiple frequency domain resources allocated at intervals of 10 RB.

[0289] Figure 5 shows an example of interlacing mapping according to one aspect of this embodiment. Here, we describe the case where the total available bandwidth is 20 MHz and there are 100 RBs. Interlace #i consists of 10 RBs with index values ​​{i, i+10, i+20, ..., i+90}. One interlace consists of multiple RBs with frequency intervals between the 10 RBs. When the total available bandwidth is 20 MHz, 10 interlaces #0-#9 are provided.

[0290] Figure 5 illustrates the case where the subcarrier spacing is 15 kHz, but when the subcarrier spacing is 30 kHz, the frequency spacing of the resource blocks constituting the interlace may be different. A 20 MHz bandwidth consists of 50 RBs, and one interlace consists of 10 RBs. In this case, there will be 5 interlaces, #0-#4. In this case, interlace #i is, It consists of 10 RBs with index values ​​{i, i+5, i+10, ..., i+45}. The interval consists of multiple RBs with a frequency interval of 5 RBs.

[0291] A subchannel may consist of one or more interlaces. Subchannel indices and interlace indices may be associated in ascending order.

[0292] As a common resource (common interlace) for PSFCH, for example, the interlace at index #0 Race (resource blocks #0, #10, #20, #30, #40, #50, #60, #70, #80, #90) It is possible. Individual resources (individual PRBs) in PSFCH use resource blocks belonging to interlaces other than those used for common resources. For example, resource blocks of interlaces in indices #1 to #9 are used. Individual PSFCH resources for each resource pool The resource block used for the source is set. Used for individual resources in PSFCH. A bitmap indicating interlacing is sent to terminal device 1.

[0293] Terminal device 1 transmits signals generated from HARQ-ACK information using resource blocks of one or more individual resources, implicitly or explicitly instructed. For example, terminal device 1 uses two resource blocks from lease blocks with small indices within the same interlace as individual resources to map and transmit signals generated from HARQ-ACK information to individual resources. When terminal device 1 transmits signals using individual resources, it also uses common resources to transmit the signals.

[0294] Figure 6 shows an example of a case in which a time domain for PSFCH is pre-set in a part of the COT according to one aspect of this embodiment. Here, the COT corresponds to six consecutive slots (slot #0, slot #1, slot #2, slot #3, slot #4, slot #5). Let me explain. Terminal device 1 transmits signals within the resources of six consecutive slots. Based on the LBT results, terminal device 1, having determined that the channel is idle, starts COT from slot #0. Terminal device 1 transmits PSCCH / PSSCH in slot #0. PSCCH / PSSCH is transmitted in slot #1. Terminal device 1 transmits PSCCH / PSSCH in slot #2. Terminal device 1 transmits PSCCH / PSSCH in slot #3. A time domain for PSFCH is pre-set in slot #4. Terminal device 1 transmits PSCCH / PSSCH in slot #4. PSCCH / PSSCH is transmitted in the unassigned portion of the symbol, and PSFCH (transmitted by another terminal device 1) is received in the symbol for which a time domain for PSFCH is set. A time gap is set between the symbol for which a time domain for PSFCH is pre-set and the other symbols to switch between transmission and reception. Terminal device 1 transmits PSCCH / PSSCH in slot #5. Oh, here, when PSCCH is transmitted in slot #1, slot #2, slot #3, etc. As shown above, PSCCH is only available in slot #0, which is the first slot in a sequence of slots. It is transmitted, and PSCCH does not need to be transmitted in slot #1, slot #2, and slot #3. .

[0295] As described above, the embodiment of the present invention is such that the terminal device 1 is used for transmitting and receiving PSFCH An input that receives a bitmap indicating the trace and is used for sending and receiving PSFCH signals is shown. By indexing individual PRBs used in a PSFCH starting from the resource block with the smallest index in the interlace, and by using multiple individual PRBs with consecutive indices to transmit and receive within a single PSFCH, the frequencies between multiple individual PRBs used in a single PSFCH can be separated, satisfying the constraint of maximum transmit power density within 1 MHz by using different transmit power in different resource blocks within a single PSFCH. This avoids the need to configure settings and supports efficient transmission.

[0296] 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.

[0297] 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.

[0298] 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.

[0299] Furthermore, "computer-readable recording media" may include those that dynamically hold programs for a short period of time, such as communication lines used when transmitting programs via networks such as the Internet or communication lines such as telephone lines, as well as those that hold programs for a certain period of time, such as volatile memory within a computer system that acts as a server or client in such cases. In addition, the above-mentioned program may be for the purpose of realizing some of the functions described above, and may also be a program that can realize the above-mentioned functions in combination with a program already recorded in the computer system.

[0300] 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.

[0301] 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 be a part of each function or each functional block of the base station device 3 related to the above-described embodiment, or all of them. It may also have a section. As a device group, it is sufficient to have all the functions or functional blocks of the base station device 3. Furthermore, the terminal device 1 related to the above-described embodiment can also communicate with the base station device as a whole.

[0302] 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.

[0303] 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.

[0304] 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.

[0305] 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]

[0306] 1 (1A, 1B, 1C) Terminal device 3(3A, 3B, 3C) 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 terminal device comprising a processor and memory for storing computer program code, wherein a bitmat indicating a set of multiple resource blocks used for sending and receiving PSFCH The bitmap is mapped to the smallest index bit, starting from the leftmost bit. A bit value of 0 indicates that the interlace corresponding to that bit is not used for PSFCH transmission and reception, and a bit value of 1 indicates that the interlace corresponding to that bit is not used. Receiving an RRC signaling indicating the bitmap that the interlace will be used for transmitting and receiving PSFCH, and performing PSFCH transmission and reception using multiple resource blocks belonging to one or more interlaces that are indicated in the bitmap to be used for transmitting and receiving PSFCH, A terminal device characterized in that it performs an operation including the allocation of resources to a single PSFCH in units of multiple resource blocks, starting from the resource block with the smallest index in the interlace with the smallest index in one or more interlaces that are indicated in the bitmap to be used for sending and receiving PSFCH.

2. A communication method used in terminal devices, comprising multiple resource blocks used for transmitting and receiving PSFCH This is a bitmap representing a set of locks, where the interlaces with the smallest index are associated with each bit, starting from the leftmost bit of the bitmap. A bit value of 0 indicates that the interlace corresponding to that bit is not used for PSFCH transmission and reception, and a bit value of 1 The above indicates that in the case of that bit, the interlace corresponding to that bit is used for sending and receiving PSFCH. The steps include receiving RRC signaling that represents a bitmap, and multiple resource blocks belonging to one or more interlaces that are indicated in the bitmap to be used for sending and receiving PSFCH. The steps include: sending and receiving PSFCH using k, and the smallest index interlace in one or more interlaces indicated in the bitmap to be used for sending and receiving PSFCH A communication method characterized in that resources are allocated to a single PSFCH in units of multiple resource blocks, starting with the resource block with the smallest index within the race.

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