Terminal device, base station device, and communication method

Abstract

To provide a terminal device, a base station device, and a communication method that communicate efficiently.SOLUTION: In a wireless communication system, a terminal device includes a receiving unit that obtains a random access response grant, and a transmitting unit that transmits a PUSCH scheduled using the random access response grant. An MCS field included in the random access response grant is set to indicate one MCS value from one MCS index candidate set. The transmitting unit selects one MCS index candidate set from a plurality of MCS index candidate sets based on one or both of a resource amount of the PUSCH and values of fields other than the MCS field included in the random access response grant.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a terminal device, a base station device, and a communication method.

Background Art

[0002] A radio access method and a radio network of cellular mobile communication (hereinafter, also referred to as "Long Term Evolution (LTE)" or "EUTRA: Evolved Universal Terrestrial Radio Access") are being studied in the Third Generation Partnership Project (3GPP: 3 rd Generation Partnership Project). In LTE, a base station device is also called an eNodeB (evolved NodeB), and a terminal device is also called a UE (User Equipment). LTE is a cellular communication system in which a plurality of areas covered by a base station device are arranged in a cell shape. A single base station device may manage a plurality of serving cells.

[0003] In 3GPP, work on formulating a radio communication standard (NR: New Radio) has been carried out. 3GPP is further studying the further expansion of radio communication standards (Non-Patent Document 1).

Prior Art Documents

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The present invention provides a terminal device, a base station device, and a communication method used in the terminal device that perform communication efficiently.

Means for Solving the Problem

[0006] (1) A first aspect of the present invention is a terminal device, comprising a receiving unit that acquires a random access response grant, and a transmitting unit that transmits a PUSCH scheduled by the random access response grant. The MCS field included in the random access response grant is set to indicate one MCS value from one set of MCS index candidates, and the transmitting unit selects the one set of MCS index candidates from a plurality of sets of MCS index candidates based on one or both of 1) the resource amount of the PUSCH and 2) the value of a field other than the MCS field included in the random access response grant.

[0007] (2) A second aspect of the present invention is a base station device, comprising a transmitting unit that transmits a random access response grant, and a receiving unit that receives a PUSCH scheduled by the random access response grant. The MCS field included in the random access response grant is set to indicate one MCS value from one set of MCS index candidates, and the receiving unit selects the one set of MCS index candidates from a plurality of sets of MCS index candidates based on one or both of 1) the resource amount of the PUSCH and 2) the value of a field other than the MCS field included in the random access response grant.

[0008] (3) A third aspect of the present invention is a communication method used in a terminal device, comprising a step of acquiring a random access response grant, and the random access response gran A step of transmitting a PUSCH scheduled by a radio resource control (RRC) connection reconfiguration message, and the MCS field included in the random access response grant is set to indicate one MCS value from one set of MCS index candidates, and the one set of MCS index candidates is selected from a plurality of sets of MCS index candidates based on one or both of 1) the resource amount of the PUSCH and 2) the value of a field other than the MCS field included in the random access response grant.

Advantages of the Invention

[0009] According to the present invention, the terminal device can communicate efficiently. Also, the base station device can communicate efficiently.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Modes for Carrying Out the Invention

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

[0012] floor(C) may be the floor function for the real number C. For example, floor(C) may be a function that outputs the largest integer within the range not exceeding the real number C. ceil(D) may be the ceiling function for the real number D. For example, ceil(D) may be a function that outputs the smallest integer within the range not less than the real number D. mod(E,F) may be a function that outputs the remainder when E is divided by F. mod(E,F) may be a function that outputs a value corresponding to the remainder when E is divided by F. exp(G)=e^G. Here, e is the Napier's constant. H^I represents the I-th power of H. max(J,K) is a function that outputs the maximum value among J and K. Here, when J and K are equal, max(J,K) is a function that outputs J or K. min(L,M) is a function that outputs the minimum value among L and M. Here, when L and M are equal, min(L,M) is a function that outputs L or M. round(N) is a function that outputs the integer value of the value closest to N. “·” represents multiplication.

[0013] FIG. 1 is a conceptual diagram of a wireless communication system 9 according to an aspect of the present embodiment. In FIG. 1, the wireless communication system includes terminal devices 1A to 1C and a base station device 3 (BS#3: Base station#3). Hereinafter, the terminal devices that communicate with the base station device 3 are also collectively referred to as terminal device 1 (UE#1: User Equipment#1).

[0014] In the wireless communication system 9, the terminal device 1 and the base station device 3 may use one or more communication methods. For example, in the downlink of the wireless communication system 9, CP-OFDM (Cyclic Prefix - Orthogonal Frequency Division Multiplex) may be used. Also, in the uplink of the wireless communication system 9, either CP-OFDM or DFT-s-OFDM (Discrete Fourier Transform - spread - Orthogonal Frequency Division Multiplex) may be used. 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 referred to as DFT precoding.

[0015] As shown in FIG. 1, the base station device 3 may be configured by one transceiver device (or a transmission point, a transmission device, a reception point, a reception device, a transceiver point). On the other hand, in some cases, the base station device 3 may be configured to include a plurality of transceiver devices. When the base station device 3 is configured by a plurality of transceiver devices, each of the plurality of transceiver devices may be arranged at geographically different positions.

[0016] The base station device 3 may provide one or more serving cells. The serving cell may be defined as a set of resources used in the wireless communication system 9. Here, the serving cell is also referred to as a cell.

[0017] A serving cell may be configured to include one downlink component carrier and / or one uplink component carrier. A serving cell may be configured to include one or both of two or more downlink component carriers and two or more uplink component carriers. The downlink component carrier and the uplink component carrier are also collectively referred to as component carriers.

[0018] One or more SCS-specific carriers may be configured for a component carrier. One subcarrier-spacing configuration μ may be associated with one SCS-specific carrier.

[0019] Resources in the radio communication system 9 may be managed by a resource grid using subcarrier indices and OFDM symbol indices.

[0020] The subcarrier spacing (SCS) Δf for a subcarrier-spacing configuration μ may be Δf = 2 · 15 kHz. For example, the subcarrier-spacing configuration μ may indicate any one of 0, 1, 2, 3, or 4. μ

[0021] The time unit T c = 1 / (Δf max · N f ) 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 may be κ = Δf max · N f / (Δf ref · N f,ref ) = 64. Also, Δf ref may be 15 kHz. Nf,ref is 2048.

[0022] The transmission of downlink / uplink signals may be organized into radio frames (system frames, frames) of length T f . Here, T f =(Δf max ·N f / 100)·T s may be 10 ms.

[0023] The radio frame may be composed of 10 subframes. Here, the length of the subframe T sf =(Δf max ·N f / 1000)·T s may be 1 ms. Also, the number of OFDM symbols per subframe may be N subframe,μ symb =N slot symb ·N subframe,μ slot .

[0024] As the unit in the time domain of the communication method used in the wireless communication system 9, 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.

[0025] A slot may be composed of a plurality of OFDM symbols. For example, one slot may be composed of N slot symb consecutive OFDM symbols. For example, in the case of normal CP setting, N slot [[ID=5L]] symb may be 14. Also, in the case of extended CP setting, N slot symb may be 12.

[0026] Slots may be indexed in the time domain. For example, the slot index n μ s may be given in ascending order as an integer value in the range from 0 to N subframe,μ slot -1 in a subframe. Also, the slot index n μ s,f may be given in ascending order as an integer value in the range from 0 to N frame,μ slot -1 in a radio frame.

[0027] FIG. 2 is a diagram showing a configuration example of a resource grid according to an aspect of the present embodiment. In the resource grid of FIG. 2, the horizontal axis is the OFDM symbol index l sym and the vertical axis is the subcarrier index k sc . The resource grid of FIG. 2 includes N size,μ grid,x ·N RB sc subcarriers and includes N subframe,μ symb OFDM symbols. Here, N size,μ grid,x indicates the bandwidth of the SCS-specific carrier. Also, the unit of the value of N size,μ grid,x is a resource block.

[0028] In the resource grid, the resource specified by the subcarrier index k sc and the OFDM symbol index l sym is also referred to as a resource element (RE: Resource Element).

[0029] A resource block (RB: Resource Block) is N RB scincludes a number of consecutive sub - carriers. A resource block is a general term for a common resource block, a physical resource block (PRB), and a virtual resource block (VRB). For example, N RB sc may be 12.

[0030] A BWP (BandWidth Part) may be configured as a subset of the resource grid. Here, the BWP configured for the downlink is also referred to as the downlink BWP. The BWP configured for the uplink is also referred to as the uplink BWP.

[0031] An antenna port may be defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed (An antenna port is defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed). For example, the channel may correspond to a physical channel. Also, the symbol may correspond to a modulated symbol arranged in a resource element. Here, "channel" may mean "propagation path". Also, "channel" may mean "physical channel".

[0032] If the large scale property of the channel through which symbols are transmitted at one antenna port can be estimated from the channel through which symbols are transmitted at another antenna port, the two antenna ports are considered to be in a Quasi Co-Located (QCL) relationship. Here, the large scale property may include the long-term characteristics of the channel. The large scale property may include some or all of the delay spread, Doppler spread, Doppler shift, average gain, average delay, and some of the spatial Rx parameters. For the first antenna port and the second antenna port to be QCL with respect to the beam parameters, the receive beam assumed by the receiving side for the first antenna port and the receive beam assumed by the receiving side for the second antenna port may be the same (or corresponding). For the first antenna port and the second antenna port to be QCL with respect to the beam parameters, the transmit beam assumed by the receiving side for the first antenna port and the transmit beam assumed by the receiving side for the second antenna port may be the same (or corresponding). The terminal device 1 may assume that the two antenna ports are QCL if the large scale property of the channel through which symbols are transmitted at one antenna port can be estimated from the channel through which symbols are transmitted at another antenna port. That the two antenna ports are QCL may mean that it is assumed that the two antenna ports are QCL.

[0033] Carrier aggregation is the aggregation of multiple serving Communication may also be performed using cells. Also, carrier aggregation may be performed using a plurality of aggregated component carriers. Also, carrier aggregation may be performed using a plurality of aggregated downlink component carriers. Also, carrier aggregation may be performed using a plurality of aggregated uplink component carriers.

[0034] FIG. 3 is a schematic block diagram showing a configuration example of the base station apparatus 3 according to an aspect of the present embodiment. As shown in FIG. 3, the base station apparatus 3 includes part or all of a physical layer processing unit (radio transceiver unit) 30 and / or a higher layer processing unit 34. The physical layer processing unit 30 includes part or all of an antenna unit 31, an RF (Radio Frequency) processing unit 32, and a baseband processing unit 33. The higher layer processing unit 34 includes part or all of a medium access control layer (MAC layer) processing unit 35 and a radio resource control (RRC) layer processing unit 36.

[0035] The physical layer processing unit 30 performs physical layer processing. Here, the physical layer processing may include part or all of generation of a baseband signal of a physical channel, generation of a baseband signal of a physical signal, detection of information transmitted from a physical channel, and detection of information transmitted by a physical signal. Also, the physical layer processing may include mapping processing of a transport channel to a physical channel. Here, the baseband signal is also referred to as a time-continuous signal.

[0036] For example, the physical layer processing unit 30 may generate a baseband signal of a downlink physical channel. Here, the transport block delivered from the higher layer on the DL-SCH may be arranged on the downlink physical channel.

[0037] For example, the physical layer processing unit 30 may generate a baseband signal of a downlink physical signal.

[0038] For example, the physical layer processing unit 30 may attempt to detect information transmitted by the uplink physical channel. Here, the transport block among the information transmitted by the uplink physical channel may be delivered to the upper layer on the UL-SCH.

[0039] For example, the physical layer processing unit 30 may attempt to detect information transmitted by the uplink physical signal.

[0040] The upper layer processing unit 34 performs part or all of the processing of the MAC (Medium Access Control) layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and RRC layer. Here, the MAC layer is also referred to as the MAC sublayer. Also, the PDCP layer is also referred to as the PDCP sublayer. Also, the RLC layer is also referred to as the RLC sublayer. Also, the RRC layer is also referred to as the RRC sublayer. The Medium Access Control layer processing unit (MAC layer processing unit) 35 performs the processing of the MAC layer. Here, the processing of the MAC layer may include part or all of the mapping between the logical channel and the transport channel, the multiplexing of one or more MAC SDUs (Service Data Units) into a transport block, the decomposition of one or more MAC SDUs of the transport block delivered from the physical layer on the UL-SCH, the application of HARQ (Hybrid Automatic Repeat reQuest) to the transport block, and the processing of the scheduling request.

[0041] The Radio Resource Control layer processing unit 36 performs the processing of the RRC layer. The processing of the RRC layer may include part or all of the management of the notification signal, the management of the RRC connection / RRC idle state, and the RRC reconfiguration. The processing of the MAC layer may include part or all of the mapping between the logical channel and the transport channel, the multiplexing of one or more MAC SDUs (Service Data Units) into a transport block, the decomposition of one or more MAC SDUs of the transport block delivered from the physical layer on the UL-SCH, the application of HARQ (Hybrid Automatic Repeat reQuest) to the transport block, and the processing of the scheduling request. One or more MAC SDUs of the transport block delivered from the physical layer on the UL-SCH The processing of the MAC layer may include part or all of the mapping between the logical channel and the transport channel, the multiplexing of one or more MAC SDUs (Service Data Units) into a transport block, the decomposition of one or more MAC SDUs of the transport block delivered from the physical layer on the UL-SCH, the application of HARQ (Hybrid Automatic Repeat reQuest) to the transport block, and the processing of the scheduling request.

[0042] The Radio Resource Control layer processing unit 36 performs the processing of the RRC layer. The processing of the RRC layer may include part or all of the management of the notification signal, the management of the RRC connection / RRC idle state, and the RRC reconfiguration.

[0043] The radio resource control layer processing unit 36 may manage RRC parameters used for various settings of the terminal device 1. For example, the radio resource control layer processing unit 36 may transmit to the terminal device 1 an RRC message on a certain logical channel including the RRC parameters. Here, the RRC message may be mapped to any one of BCCH (Broadcast Control CHannel), CCCH (Common Control CHannel), and DCCH (Dedicated Control CHannel).

[0044] The radio resource control layer processing unit 36 may determine RRC parameters to be transmitted to the terminal device 1 based on the RRC parameters included in the RRC message transmitted from the terminal device 1. Here, the RRC message transmitted from the terminal device 1 may be related to the function information report of the terminal device 1.

[0045] The physical layer processing unit 30 may perform part or all of modulation processing, coding processing, and transmission processing. The physical layer processing unit 30 may generate a physical signal based on part or all of coding processing, modulation processing, and baseband signal generation processing for a transport block. The physical layer processing unit 30 may arrange the physical signal in a certain BWP. The physical layer processing unit 30 may transmit the generated physical signal.

[0046] The physical layer processing unit 30 may perform one or both of demodulation processing and decoding processing. The physical layer processing unit 30 may deliver the transport block among the detected information based on demodulation processing and decoding processing for the received physical signal to the upper layer on the UL-SCH.

[0047] When carrier sense is required to be performed in the bandwidth of the serving cell, the physical layer processing unit 30 may perform carrier sense prior to transmitting the physical signal.

[0048] The RF unit 32 may convert the signal received via the antenna unit 31 into a baseband signal, and remove unnecessary frequency components. The RF unit 32 outputs the baseband signal to the baseband unit 33. The baseband unit 33 may digitize the baseband signal input from the RF unit 32. The baseband unit 33 may remove the portion corresponding to the CP (Cyclic Prefix) from the digitized baseband signal. The baseband unit 33 may perform a fast Fourier transform (FFT) on the baseband signal from which the CP has been removed to extract the signal in the frequency domain. 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 CP to the generated baseband signal. The baseband unit 33 may analogize the baseband signal to which CP has been added. The baseband unit 33 may output the analogized baseband signal to the RF unit 32.

[0049] The RF unit 32 may remove extra frequency components from the baseband signal input from the baseband unit 33. The RF unit 32 may up-convert 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. Also, the RF unit 32 may have a function of controlling the transmission power. One or more serving cells (or component carriers, downlink component carriers, uplink component carriers) may be set for the terminal device 1. The baseband unit 33 may perform a fast Fourier transform (FFT) on the baseband signal from which the CP has been removed to extract the signal in the frequency domain.

[0050] 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 CP to the generated baseband signal. The baseband unit 33 may analogize the baseband signal to which CP has been added. The baseband unit 33 may output the analogized baseband signal to the RF unit 32. The baseband unit 33 may perform a fast Fourier transform (FFT) on the baseband signal from which the CP has been removed to extract the signal in the frequency domain.

[0051] The RF unit 32 may remove extra frequency components from the baseband signal input from the baseband unit 33. The RF unit 32 may up-convert 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. Also, the RF unit 32 may have a function of controlling the transmission power.

[0052] One or more serving cells (or component carriers, downlink component carriers, uplink component carriers) may be set for the terminal device 1.

[0053] Each of the serving cells configured for the terminal device 1 may be any one of a PCell (Primary cell), a PSCell (Primary SCG cell), and an SCell (Secondary cell).

[0054] The PCell is a serving cell included in the MCG (Master Cell Group). PC ell is the cell (the cell in which the procedure is performed) in which the terminal device 1 performs an initial connection establishment procedure or a connection re-establishment procedure.

[0055] The PSCell is a serving cell included in the SCG (Secondary Cell Group). The PSCell is the serving cell in which the random access procedure is performed by the terminal device 1.

[0056] The SCell may be included in either the MCG or the SCG.

[0057] The serving cell group (cell group) is a general term for the MCG, the SCG, and the PUCCH cell group. The serving cell group may include one or more serving cells (or component carriers). The one or more serving cells (or component carriers) included in the serving cell group may be operated by carrier aggregation.

[0058] One or more downlink BWPs may be configured for the terminal device 1. One or more uplink BWPs may be configured for the terminal device 1.

[0059] ​Of the one or more downlink BWPs configured for the terminal device 1, one downlink BWP may be configured as the active downlink BWP (or one downlink BWP may be activated). Of the one or more uplink BWPs configured for the terminal device 1, one uplink BWP may be configured as the active uplink BWP (or one uplink BWP may be activated).

[0060] The physical layer processing unit 30 may attempt to transmit PDSCH, PDCCH, and CSI-RS on the active downlink BWP. The physical layer processing unit 10 may attempt to receive PDSCH, PDCCH, and CSI-RS on the active downlink BWP. The physical layer processing unit 30 may attempt to receive PUCCH and PUSCH on the active uplink BWP. The physical layer processing unit 10 may attempt to transmit PUCCH and PUSCH on the active uplink BWP. Here, the active downlink BWP and the active uplink BWP are collectively referred to as the active BWP.

[0061] The physical layer processing unit 30 does not have to attempt to transmit PDSCH, PDCCH, and CSI-RS on an inactive downlink BWP (a downlink BWP that is not the active downlink BWP). The physical layer processing unit 10 does not have to attempt to receive PDSCH, PDCCH, and CSI-RS on an inactive downlink BWP. The physical layer processing unit 30 does not have to attempt to receive PUCCH and PUSCH on an inactive uplink BWP (an uplink BWP that is not the active uplink BWP). The physical layer processing unit 10 does not have to attempt to transmit PUCCH and PUSCH on an inactive uplink BWP. Here, the inactive downlink BWP and the inactive uplink BWP are collectively referred to as the inactive BWP.

[0062] Downlink BWP switching is a procedure for deactivating one active downlink BWP of a certain serving cell and activating any of the inactive downlink BWPs of the certain serving cell. Downlink BWP switching may be controlled by any of the physical layer, MAC layer, and RRC layer.

[0063] Uplink BWP switching is used to deactivate one active uplink BWP of a certain serving cell and activate any of the inactive uplink BWPs of the certain serving cell. Uplink BWP switching may be controlled by any of the physical layer, MAC layer, and RRC layer.

[0064] Among one or more downlink BWPs configured for terminal device 1, two or more downlink BWPs may not be configured as the active downlink BWP. For a certain component carrier, at a certain time, one downlink BWP may be active.

[0065] Among one or more uplink BWPs configured for terminal device 1, two or more uplink BWPs may not be configured as the active uplink BWP. For a certain component carrier, at a certain time, one uplink BWP may be active.

[0066] For each downlink component carrier, one downlink BWP may be configured as the active BWP. That is, for a certain downlink component carrier, two or more downlink BWPs may not be configured as the active downlink BWP.

[0067] For each uplink component carrier, one uplink BWP may be set as the active BWP. That is, for a certain uplink component carrier, two or more uplink BWPs do not have to be set as the active uplink BWP.

[0068] FIG. 4 is a schematic block diagram showing a configuration example of the terminal device 1 according to an aspect of the present embodiment. As shown in FIG. 4, the terminal device 1 includes a physical layer processing unit (radio transmission / reception unit) 10, and part or all of the upper layer processing unit 14. The radio transmission / reception unit 10 includes part or all of the antenna unit 11, the RF unit 12, and the baseband unit 13. The upper layer processing unit 14 includes part or all of the medium access control layer processing unit 15 and the radio resource control layer processing unit 16.

[0069] The physical layer processing unit 10 performs physical layer processing.

[0070] For example, the physical layer processing unit 10 may generate a baseband signal of an uplink physical channel. Here, the transport block delivered from the upper layer on the UL-SCH may be arranged on the uplink physical channel.

[0071] For example, the physical layer processing unit 10 may generate a baseband signal of an uplink physical signal.

[0072] For example, the physical layer processing unit 10 may attempt to detect information transmitted by a downlink physical channel. Here, the transport block among the information transmitted by the downlink physical channel may be delivered to the upper layer on the DL-SCH.

[0073] For example, the physical layer processing unit 10 may attempt to detect information transmitted by a downlink physical signal.

[0074] The upper layer processing unit 14 is the MAC (Medium Access Control) layer, packet data integration pro It performs part or all of the processing of the PDCP (Packet Data Convergence Protocol) layer, Radio Link Control (RLC) layer, and RRC layer.

[0075] The Medium Access Control layer processing unit (MAC layer processing unit) 15 performs the processing of the MAC layer.

[0076] The Radio Resource Control layer processing unit 16 performs the processing of the RRC layer.

[0077] The Radio Resource Control layer processing unit 16 may manage the RRC parameters transmitted from the base station device 3. For example, the Radio Resource Control layer processing unit 16 may acquire the RRC parameters included in the RRC message on a certain logical channel and set the acquired RRC parameters in the storage area of the terminal device 1. The RRC parameters set in the storage area of the terminal device 1 may be provided to the lower layer.

[0078] The Radio Resource Control layer processing unit 16 may include the function information generated based on the functions provided in the terminal device 1 in the RRC message and transmit it to the base station device 3.

[0079] The Physical layer processing unit 10 may perform part or all of the modulation processing, encoding processing, and transmission processing. The Physical layer processing unit 10 may generate a physical signal based on part or all of the encoding processing, modulation processing, and baseband signal generation processing for the transport block. The Physical layer processing unit 10 may arrange the physical signal in a certain BWP. The Physical layer processing unit 10 may transmit the generated physical signal.

[0080] The Physical layer processing unit 10 may perform one or both of the demodulation processing and the decoding processing. The Physical layer processing unit 10 may deliver the transport block among the information detected based on the demodulation processing and the decoding processing for the received physical signal to the upper layer on the DL-SCH.

[0081] In the bandwidth of the serving cell, when carrier sense is required to be performed, physical layer processing Section 10 may perform carrier sense prior to transmitting a physical signal.

[0082] RF section 12 may convert the signal received via antenna section 11 into a baseband signal, and remove unnecessary frequency components. RF section 12 outputs the baseband signal to baseband section 13. Baseband section 13 may digitize the baseband signal input from RF section 12. Baseband section 13 may remove a portion corresponding to the CP (Cyclic Prefix) from the digitized baseband signal. Baseband section 13 may perform a fast Fourier transform (FFT) on the baseband signal from which the CP has been removed, and extract a signal in the frequency domain.

[0083] Baseband section 13 may generate a baseband signal by performing an inverse fast Fourier transform (IFFT) on the physical signal. Baseband section 13

[0084] may add CP to the generated baseband signal. Baseband section 13 may analogize the baseband signal to which CP has been added. Baseband section 13 may output the analogized baseband signal to RF section 12. Baseband section 13 may remove extra frequency components from the baseband signal input from baseband section 13. RF section 12 may up-convert the baseband signal to the carrier frequency to generate an RF signal. RF section 12 may transmit the RF signal via antenna section 31. Also, RF section 12 may have a function of controlling the transmission power.

[0085]

[0086] ​The following describes physical signals.

[0087] Physical signals are a general term for downlink physical channels, downlink physical signals, uplink physical channels, and uplink physical channels. A physical channel is a general term for a downlink physical channel and an uplink physical channel. A physical signal is a general term for a downlink physical signal and an uplink physical signal.

[0088] The uplink physical channel may correspond to a set of resource elements that transmit information generated in the upper layer. The uplink physical channel may be a physical channel used in an uplink component carrier. The uplink physical channel may be transmitted by the physical layer processing unit 10. The uplink physical channel may be received by the physical layer processing unit 30. In the uplink of the wireless communication system according to an aspect of the present embodiment, some or all of the following uplink physical channels may be used. · PUCCH (Physical Uplink Control CHannel) · PUSCH (Physical Uplink Shared CHannel) · PRACH (Physical Random Access CHannel) The PUCCH may be transmitted to deliver (deliver, transmission, convey) uplink control information (UCI: Uplink Control Information). The uplink control information may be mapped to the PUCCH. The physical layer processing unit 10 may transmit the PUCCH on which the uplink control information is mapped. The physical layer processing unit 30 may receive the PUCCH on which the uplink control information is mapped.

[0089] The uplink control information (uplink control information bits, uplink control information sequence, uplink control information type) is channel state information (CSI: Channel State Information), scheduling It includes part or all of the scheduling request (SR), HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement) information.

[0090] Channel state information is also referred to as channel state information bits or a channel state information sequence. A scheduling request is also referred to as scheduling request bits or a scheduling request sequence. HARQ-ACK information is also referred to as HARQ-ACK information bits or a HARQ-ACK information sequence.

[0091] The HARQ-ACK information may be composed of HARQ-ACK bits corresponding to a transport block (TB:Transport block). A certain HARQ-ACK bit may indicate an ACK (acknowledgement) or NACK (negative-acknowledgement) corresponding to the transport block. ACK may indicate that the decoding of the transport block has been successfully completed (has been decoded). NACK may indicate that the decoding of the transport block has not been successfully completed (has not been decoded). The HARQ-ACK information may include one or more HARQ-ACK bits.

[0092] The HARQ-ACK for a transport block is also referred to as the HARQ-ACK for the PDSCH. Here, "the HARQ-ACK for the PDSCH" indicates the HARQ-ACK for the transport block included in the PDSCH.

[0093] The scheduling request may be used to request resources for the UL-SCH for an initial transmission. The scheduling request bit may be used to indicate either a positive SR or a negative SR. When the scheduling request bit indicates a positive SR, it is also referred to as "a positive SR is transmitted". The positive SR may indicate that the media access control layer processing unit 15 requests resources for the UL-SCH for an initial transmission. When the scheduling request bit indicates a negative SR, it is also referred to as "a negative SR is transmitted". The negative SR may indicate that the media access control layer processing unit 15 does not request resources for the UL-SCH for an initial transmission.

[0094] The channel state information may include some or all of a channel quality indicator (CQI), a precoder matrix indicator (PMI), and a rank indicator (RI). The CQI is an indicator related to the quality of the propagation path (e.g., propagation strength) or the quality of the physical channel, the PMI is an indicator related to the precoder, and the RI is an indicator related to the transmission rank (or the number of transmission layers).

[0095] The channel state information is an indicator related to the reception state of a physical signal (e.g., CSI-RS) used for channel measurement. The value of the channel state information may be determined by the terminal device 1 based on the reception state assumed by the physical signal used for channel measurement. The channel measurement may include interference measurement.

[0096] The PUCCH may be associated with a certain PUCCH format. Here, the PUCCH format may be the format of the physical layer processing of the PUCCH, or may be the format of the information transmitted using the PUCCH.

[0097] The PUSCH may be transmitted to transmit one or both of the uplink control information and the transport block. The PUSCH may be used to transmit one or both of the uplink control information and the transport block. The terminal device 1 may transmit a PUSCH in which one or both of the uplink control information and the transport block are arranged. The base station device 3 may receive a PUSCH in which one or both of the uplink control information and the transport block are arranged.

[0098] The PRACH may be transmitted to transmit the index of the random access preamble. The terminal device 1 may transmit the PRACH. The base station device 3 may receive the PRACH. The terminal device 1 may transmit a random access preamble on the PRACH. The base station device 3 may receive a random access preamble on the PRACH.

[0099] The uplink physical signal may correspond to a set of resource elements. The uplink physical signal may not be used for transmitting information generated in the upper layer. Note that the uplink physical signal may be used for transmitting information generated in the physical layer. The uplink physical signal may be a physical signal used in the uplink component carrier. The physical layer processing unit 10 may transmit the uplink physical signal. The physical layer processing unit 30 may receive the uplink physical signal. In the uplink of the wireless communication system according to one aspect of the present 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) UL DMRS is a general term for DMRS for PUSCH and DMRS for PUCCH.

[0100] The set of antenna ports of DMRS for PUSCH (DMRS related to PUSCH, DMRS included in PUSCH, DMRS corresponding to PUSCH) may be given based on the set of antenna ports for the PUSCH. For example, the set of antenna ports of DMRS for PUSCH may be the same as the set of antenna ports of the PUSCH.

[0101] The propagation path of PUSCH may be estimated from the DMRS for the PUSCH.

[0102] The set of antenna ports of 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 of the PUCCH.

[0103] The propagation path of PUCCH may be estimated from the DMRS for the PUCCH.

[0104] The downlink physical channel may correspond to a set of resource elements that transmit information generated at the upper layer. The downlink physical channel may be a physical channel used in a downlink component carrier. The physical layer processing unit 30 may transmit the downlink physical channel. The physical layer processing unit 10 may receive the downlink physical channel. In the downlink of the wireless communication system according to an aspect of the present 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) The PBCH may be transmitted to transmit one or both of the MIB (MIB: Master Information Block) and the physical layer control information. Here, the physical layer control information is information generated at the physical layer. The MIB is an RRC message delivered from a higher layer on the BCCH (Broadcast Control CHannel). On the other hand, it may be transmitted to transmit one or both of them. Here, the physical layer control information is information generated at the physical layer. The MIB is an RRC message delivered from a higher layer on the BCCH (Broadcast Control CHannel). It is an RRC message delivered from a higher layer.

[0105] The PDCCH may be transmitted to transmit downlink control information (DCI: Downlink Control Information). The downlink control information may be arranged in the PDCCH. The terminal device 1 may receive the PDCCH in which the downlink control information is arranged. The base station device 3 may transmit the PDCCH in which the downlink control information is arranged.

[0106] The downlink control information may be transmitted with a DCI format. Note that the DCI format may be interpreted as the format of the downlink control information. Also, the DCI format may be interpreted as a set of downlink control information set to a certain downlink control information format.

[0107] The base station device 3 may notify the terminal device 1 of the downlink control information using the PDCCH with the DCI format. Here, the terminal device 1 may monitor the PDCCH to acquire the downlink control information. Note that, unless otherwise specified, the DCI format and the downlink control information may be described as equivalent. For example, the base station device 3 may transmit the downlink control information included in the DCI format to the terminal device 1. Also, the terminal device 1 may control the physical layer processing unit 10 using the downlink control information included in the detected DCI format.

[0108] 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 and DCI format 0_1. The downlink DCI format is a general term for DCI format 1_0 and DCI format 1_1.

[0109] DCI format 0_0 is used for scheduling the PUSCH arranged in a certain cell. DCI format 0_0 may include some or all of the fields from 1A to 1E. 1A) DCI format specific field (Identifier field for DCI formats) 1B) Frequency domain resource assignment field field) 1C) Time domain resource assignment field (Time domain resource assignment field ) 1D) Frequency hopping flag field (Frequency hopping flag field) 1E) MCS field (MCS field: Modulation and Coding Scheme field) 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.

[0110] 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.

[0111] 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.

[0112] 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. It may be used.

[0113] 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 of the transport block (TBS: Transport Block Size) arranged on the PUSCH may be determined based on part or all of the target coding rate and the modulation scheme for the PUSCH.

[0114] DCI format 0_0 may not include a field used for CSI request (CSI request).

[0115] DCI format 0_0 may not include a carrier indicator field. That is, the serving cell to which the uplink component carrier where the PUSCH scheduled by DCI format 0_0 is located may be the same as the serving cell of the downlink component carrier where the PDCCH including the DCI format 0_0 is located. Based on detecting DCI format 0_0 in a certain downlink component carrier of a certain serving cell, the terminal device 1 may recognize that the PUSCH scheduled by the DCI format 0_0 is arranged in the uplink component carrier of the certain serving cell.

[0116] DCI format 0_0 may not include a BWP field. Here, DCI format 0_0 may be a DCI format for scheduling PUSCH without changing the active uplink BWP. Based on detecting DCI format 0_0 used for scheduling PUSCH, the terminal device 1 may recognize that the PUSCH is transmitted without switching the active uplink BWP.

[0117] DCI format 0_1 is used for scheduling the PUSCH arranged in a certain cell. DCI format 0_1 is composed of including a part or all of the fields from 2A to 2H. 2A) DCI format specific field 2B) Frequency domain resource allocation field 2C) Uplink time domain resource allocation field 2D) Frequency hopping flag field 2E) MCS field 2F) CSI request field 2G) BWP field 2H) Carrier indicator field The DCI format identification field included in DCI format 0_1 may indicate 0.

[0118] The frequency domain resource allocation field included in DCI format 0_1 may be used to indicate the allocation of frequency resources for the PUSCH scheduled by the DCI format 0_1.

[0119] The time domain resource allocation field included in DCI format 0_1 may be used to indicate the allocation of time resources for the PUSCH scheduled by the DCI format 0_1.

[0120] The MCS field included in DCI format 0_1 may be used to indicate one or both of the modulation scheme for the PUSCH scheduled by the DCI format 0_1 and the target coding rate for the PUSCH scheduled by the DCI format 0_1.

[0121] 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 recognize the uplink BWP in which the PUSCH is located based on detecting the DCI format 0_1 used for scheduling the PUSCH.

[0122] DCI format 0_1 that does not include a BWP field may be a DCI format for scheduling PUSCH without changing the active uplink BWP. The terminal device 1 may recognize that it transmits the PUSCH without switching the active uplink BWP based on detecting DCI format 0_1 that is used for scheduling the PUSCH and does not include a BWP field.

[0123] Although the DCI format 0_1 includes a BWP field, if the terminal device 1 does not support the function of switching the BWP by the DCI format 0_1, the BWP field may be ignored by the terminal device 1. That is, the terminal device 1 that does not support the function of switching the BWP may recognize that it transmits the PUSCH without switching the active uplink BWP based on detecting DCI format 0_1 that is used for scheduling the PUSCH and includes a BWP field. Here, when the function of switching the BWP is supported, the radio resource control layer processing unit 16 may include function information indicating that the function of switching the BWP is supported in the RRC message.

[0124] The CSI request field may be used to indicate the reporting of CSI.

[0125] 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 where the PUSCH is located. The terminal device 1 may 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 based on detecting the DCI format 0_1 in the downlink component carrier of a certain serving cell.

[0126] When the DCI format 0_1 does not include a carrier indicator field, the serving cell to which the uplink component carrier where the PUSCH scheduled by the DCI format 0_1 is located may be the same as the serving cell of the downlink component carrier where the PDCCH including the DCI format 0_1 is located. The terminal device 1 may recognize that, based on detecting the DCI format 0_1 in a downlink component carrier of a certain serving cell, the PUSCH scheduled by the DCI format 0_1 is arranged in the uplink component carrier of the certain serving cell.

[0127] The DCI format 1_0 is used for scheduling the PDSCH arranged in a certain cell. The DCI format 1_0 is composed of including some or all of 3A to 3F. 3A) DCI format specific field 3B) Frequency domain resource allocation field 3C) Time domain resource allocation field 3D) MCS field 3E) PDSCH_HARQ feedback timing indicator field 3F) PUCCH resource indicator field The DCI format specific field included in the DCI format 1_0 may indicate 1.

[0128] The frequency domain resource allocation field included in the DCI format 1_0 may be used to indicate the allocation of frequency resources for the PDSCH scheduled by the DCI format.

[0129] The time domain resource allocation field included in DCI format 1_0 may be used to indicate the allocation of time resources for the PDSCH scheduled by the DCI format.

[0130] The MCS field included in DCI format 1_0 may be used to indicate one or both of the modulation scheme for the PDSCH scheduled by the DCI format and the target coding rate for the PDSCH scheduled by the DCI format. The target coding rate may be the target coding rate for the transport block arranged on the PDSCH. The size (TBS: Transport Block Size) of the transport block arranged on the PDSCH may be determined based on one or both of the target coding rate and the modulation scheme for the PDSCH.

[0131] The PDSCH_HARQ feedback timing indication field may be used to indicate the offset from the slot including the last OFDM symbol of the PDSCH to the slot including the first OFDM symbol of the PUCCH.

[0132] The PUCCH resource indication field may be used to indicate the resources of the PUCCH.

[0133] DCI format 1_0 may not include a carrier indicator field. That is, the downlink component carrier on which the PDSCH scheduled by DCI format 1_0 is arranged may be the same as the downlink component carrier on which the PDCCH including the DCI format 1_0 is arranged. The terminal device 1 may recognize that the PDSCH scheduled by the DCI format 1_0 is arranged on the downlink component carrier based on detecting the DCI format 1_0 in a certain downlink component carrier.

[0134] DCI format 1_0 may not include a BWP field. Here, DCI format 1_0 may be a DCI format for scheduling PDSCH without changing the active downlink BWP. The terminal device 1 may recognize that it receives the PDSCH without switching the active downlink BWP based on detecting DCI format 1_0 used for scheduling the PDSCH.

[0135] DCI format 1_1 is used for scheduling the PDSCH arranged in a certain cell. DCI format 1_1 is configured to include a part or all of 4A to 4I. 4A) DCI format specific field 4B) Frequency domain resource allocation field 4C) Time domain resource allocation field 4E) MCS field 4F) PDSCH_HARQ feedback timing indication field 4G) PUCCH resource indication field 4H) BWP field 4I) Carrier indicator field The DCI format specific field included in DCI format 1_1 may indicate 1.

[0136] The frequency domain resource allocation field included in DCI format 1_1 may be used to indicate the allocation of frequency resources for the PDSCH scheduled by the DCI format 1_1.

[0137] The time domain resource allocation field included in DCI format 1_1 may be used to indicate the allocation of time resources for the PDSCH scheduled by the DCI format 1_1.

[0138] The MCS field included in DCI format 1_1 may be used to indicate one or both of the modulation scheme for the PDSCH scheduled by the DCI format 1_1 and the target coding rate for the PDSCH scheduled by the DCI format 1_1.

[0139] When the DCI format 1_1 includes a PDSCH_HARQ feedback timing indication field, the PDSCH_HARQ feedback timing indication field may be used to indicate the offset from the slot including the last OFDM symbol of the PDSCH to the slot including the first OFDM symbol of the PUCCH. When the DCI format 1_1 does not include a PDSCH_HARQ feedback timing indication field, a parameter indicating the offset from the slot including the last OFDM symbol of the PDSCH to the slot including the first OFDM symbol of the PUCCH may be provided by the RRC layer.

[0140] The PUCCH resource indication field may be used to indicate the PUCCH resource.

[0141] The BWP field of DCI format 1_1 may be used to indicate the downlink BWP in which the PDSCH scheduled by the DCI format 1_1 is located. That is, the DCI format 1_1 may or may not be accompanied by a change in the active downlink BWP. The terminal device 1 may recognize the downlink BWP in which the PDSCH is located based on detecting the DCI format 1_1 used for scheduling the PDSCH.

[0142] The DCI format 1_1 that does not include a BWP field may be a DCI format for scheduling a PDSCH without a change in the active downlink BWP. The terminal device 1 is the DCI format 1_ It may be recognized that, based on detecting DCI format 1_1 that does not include a BWP field, the PDSCH is received without switching the active downlink BWP.

[0143] Although the DCI format 1_1 includes a BWP field, if the terminal device 1 does not support the function of switching the BWP by the DCI format 1_1, the BWP field may be ignored by the terminal device 1. That is, the terminal device 1 that does not support the function of switching the BWP may recognize that, based on detecting DCI format 1_1 that is used for scheduling the PDSCH and includes a BWP field, the PDSCH is received without switching the active downlink BWP. Here, when the function of switching the BWP is supported, the radio resource control layer processing unit 16 may include function information indicating that the function of switching the BWP is supported in the RRC message.

[0144] When the DCI format 1_1 includes a carrier indicator field, the carrier indicator field may be used to indicate the serving cell of the downlink component carrier in which the PDSCH scheduled by the DCI format 1_1 is located. The terminal device 1 may recognize that, based on detecting the DCI format 1_1 in the downlink component carrier of a certain serving cell, the PDSCH scheduled by the DCI format 1_1 is located in the downlink component carrier of the serving cell indicated by the carrier indicator field included in the DCI format 1_1.

[0145] When the DCI format 1_1 does not include a carrier indicator field, the downlink component carrier on which the PDSCH scheduled by the DCI format 1_1 is located may be the same as the downlink component carrier on which the PDCCH including the DCI format 1_1 is located. Based on detecting the DCI format 1_1 on a certain downlink component carrier, the terminal device 1 may recognize that the PDSCH scheduled by the DCI format 1_1 is arranged on the downlink component carrier.

[0146] The PDSCH may be transmitted to transmit a transport block. The PDSCH may be used to transmit a transport block. The transport block may be arranged on the PDSCH. The base station device 3 may transmit the PDSCH on which the transport block is arranged. The terminal device 1 may receive the PDSCH on which the transport block is arranged.

[0147] The downlink physical signal may correspond to a set of resource elements. The downlink physical signal may not be used for transmitting information generated in the upper layer. Note that the downlink physical signal may be used for transmitting information generated in the physical layer. The downlink physical signal may be a physical signal used in the downlink component carrier. The physical layer processing unit 10 may transmit the downlink physical signal. The physical layer processing unit 30 may receive the downlink physical signal. In the downlink of the wireless communication system according to one aspect of the present embodiment, at least some or all of the following downlink physical signals may be used. · Synchronization signal (SS: Synchronization signal) · DL DMRS (DownLink DeModulation Reference Signal) · CSI-RS (Channel State Information-Reference Signal) · DL PTRS (DownLink Phase Tracking Reference Signal) The synchronization signal may be used for the terminal device 1 to synchronize to one or both of the downlink frequency domain and time domain. The synchronization signal is a general term for PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal). The antenna ports of PSS, SSS, PBCH, and DMRS for PBCH may be the same.

[0148] The PBCH in which the symbol of PBCH at a certain antenna port is transmitted may be the DMRS for the PBCH arranged in the slot to which the PBCH is mapped, and may be estimated by the DMRS for the PBCH included in the SS / PBCH block including the PBCH.

[0149] DL DMRS is a general term for DMRS for PBCH, DMRS for PDSCH, and DMRS for PDCCH.

[0150] The set of antenna ports of DMRS for PDSCH (DMRS related to PDSCH, DMRS included in PDSCH, DMRS corresponding to PDSCH) may be given based on the set of antenna ports for the PDSCH. For example, the set of antenna ports of DMRS for PDSCH may be the same as the set of antenna ports for the PDSCH.

[0151]

[0152] ​The propagation path of the PDSCH may be estimated from the DMRS for the PDSCH. If the set of resource elements in which a symbol of a certain PDSCH is transmitted and the set of resource elements in which a symbol of the DMRS for the certain PDSCH is transmitted are included in the same precoding resource group (PRG), the PDSCH in which the symbol of the PDSCH at a certain antenna port is transmitted may be estimated by the DMRS for the PDSCH.

[0153] The antenna port of the DMRS for the PDCCH (DMRS related to the PDCCH, DMRS included in the PDCCH, DMRS corresponding to the PDCCH) may be the same as the antenna port for the PDCCH.

[0154] The propagation path of the PDCCH may be estimated from the DMRS for the PDCCH. If the same precoder is applied (assumed to be applied, assumed to apply) in the set of resource elements in which a symbol of a certain PDCCH is transmitted and the set of resource elements in which a symbol of the DMRS for the certain PDCCH is transmitted, the PDCCH in which the symbol of the PDCCH at a certain antenna port is transmitted may be estimated by the DMRS for the PDCCH.

[0155] BCH (Broadcast CHannel), UL-SCH (Uplink-Shared CHannel), and DL-SCH (Downlink-Shared CHannel) are transport channels.

[0156] The BCH of the transport layer may be mapped to the PBCH of the physical layer. That is, the transport block delivered from the upper layer on the BCH of the transport layer may be arranged in the PBCH of the physical layer. Also, the UL-SCH of the transport layer may be mapped to the PUSCH of the physical layer. That is, the transport block delivered from the upper layer on the UL-SCH of the transport layer may be arranged in the PUSCH of the physical layer. Also, the DL-SCH of the transport layer may be mapped to the PDSCH of the physical layer. That is, the transport block delivered from the upper layer on the DL-SCH of the transport layer may be arranged in the PDSCH of the physical layer.

[0157] The transport layer may apply HARQ (Hybrid Automatic Repeat reQuest) to the transport block.

[0158] BCCH (Broadcast Control CHannel), CCCH (Common Control CHannel), and DCCH (Dedicated Control CHannel) are logical channels. For example, BCCH may be used for delivering RRC messages including the MIB or RRC messages including system information. Also, CCCH may be used for transmitting RRC messages including common RRC parameters among a plurality of terminal devices 1. Here, CCCH may be used, for example, for a terminal device 1 that is not RRC-connected. Also, DCCH may be used for transmitting RRC messages dedicated to a certain terminal device 1. Here, DCCH may be used, for example, for a terminal device 1 that is RRC-connected.

[0159] Common RRC parameters that are common among a plurality of terminal devices 1 are also referred to as common RRC parameters. Here, the common RRC parameters may be defined as parameters specific to the serving cell. Here, the parameters specific to the serving cell may be parameters common to the terminal devices (for example, terminal devices 1-A, B, and C) in which the serving cell is set.

[0160] For example, the common RRC parameters may be included in the RRC message delivered to the BCCH. For example, the common RRC parameters may be included in the RRC message delivered to the DCCH.

[0161] Among certain RRC parameters, RRC parameters different from the common RRC parameters are also referred to as dedicated RRC parameters. Here, the dedicated RRC parameters can provide dedicated RRC parameters for the terminal device 1-A in which the serving cell is set. That is, the dedicated RRC parameters are RRC parameters that can provide unique settings for each of the terminal devices 1-A, B, and C.

[0162] The BCCH may be mapped to the BCH or the DL-SCH. That is, the RRC message including the MIB information may be delivered to the BCH. Also, the RRC message including system information other than the MIB may be delivered to the DL-SCH. Also, the CCCH is mapped to the DL-SCH or the UL-SCH. That is, the RRC message mapped to the CCCH may be delivered to the DL-SCH or the UL-SCH. Also, the DCCH may be mapped to the DL-SCH or the UL-SCH. That is, the RRC message mapped to the DCCH may be delivered to the DL-SCH or the UL-SCH.

[0163] FIG. 5 is a diagram showing an example of a procedure related to the transmission of PUSCH of the terminal device 1 and the base station device 3 according to one aspect of the present embodiment. As shown in FIG. 5, the radio resource control layer processing unit 36 and the radio resource control layer processing unit 16 exchange RRC messages. Further, the media access control layer processing unit 35 and the media access control layer processing unit 15 exchange MAC CE. Further, the physical layer processing unit 30 notifies the physical layer processing unit 10 of the DCI format.

[0164] The physical layer processing unit 10 interprets the received DCI format and delivers a part of the information obtained based on the interpretation to the media access control layer processing unit 15. Here, a part of the information obtained based on the interpretation is also referred to as HARQ information. For example, the HARQ information may include at least one or both of the index of the HARQ process (HPN: HARQ Process Index) and the new data indicator (NDI: New Data Indicator). Here, when the received DCI format schedules the transmission of PUSCH, the DCI format corresponds to an uplink grant.

[0165] In some cases, the DCI format may be replaced by a random access response grant. For example, in the scheduling of the initial transmission of Message 3 PUSCH in a random access procedure, a random access response grant may be used. Here, in a 4-step contention-based random-access procedure, the PUSCH scheduled by a random access response grant is classified as Message 3 PUSCH. Also, in a 4-step contention-based random-access procedure, the PUSCH scheduled by a DCI format with a CRC sequence scrambled by TC-RNTI is classified as Message 3 PUSCH. Further, in a contention-free random-access procedure, the PUSCH scheduled by a random access response grant is not classified as Message 3 PUSCH.

[0166] Here, in a 2-step contention-based random-access procedure, the PUSCH scheduled by a fallback random access response grant is classified as fallback Message 3 PUSCH. Also, in a 2-step contention-based random-access procedure, the PUSCH scheduled by a DCI format with a CRC sequence scrambled by TC-RNTI is classified as fallback Message 3 PUSCH.

[0167] Next, the Medium Access Control layer processing unit 15 issues a transmission instruction to the Physical layer processing unit 10 based on the uplink grant. Here, for this transmission instruction, the Medium Access Control layer processing unit 15 may further refer to the RRC parameters provided by the Radio Resource Control layer processing unit 16.

[0168] Next, based on the transmission instruction instructed by the Medium Access Control Layer Processing Unit 15, the Physical Layer Processing Unit 10 performs the transmission of the PUSCH. Here, for the transmission of the PUSCH, the Physical Layer Processing Unit 10 may further refer to the RRC parameters provided by the Radio Resource Control Layer Processing Unit 16.

[0169] Here, the RRC parameters provided by the Radio Resource Control Layer Processing Unit 16 to the Medium Access Control Layer Processing Unit 15 or the Physical Layer Processing Unit 10 may be parameters managed by the Radio Resource Control Layer Processing Unit 16 based on the RRC message transmitted from the Radio Resource Control Layer Processing Unit 36.

[0170] Here, the Radio Resource Control Layer Processing Unit 36 may include, in the RRC message, the RRC parameters for determining the method for determining the transmission opportunity of the PUSCH and transmit them to the Radio Resource Control Layer Processing Unit 16.

[0171] FIG. 6 is a diagram showing an example of the transmission of the PUSCH according to one aspect of the present embodiment. Here, 6000 indicates a pattern. The pattern 6000 is composed of including regions 6001, 6002, and 6003. Also, 6010 is a pattern. Here, the configurations of the pattern 6000 and 6010 are the same. That is, the pattern 6010 is composed of including regions 6011, 6012, and 6013. Region 6001 corresponds to region 6011. Region 6002 corresponds to region 6012. Region 6003 corresponds to region 6013.

[0172] In FIG. 6, the region 6001 includes the time regions of slot #n (slot #n), slot #n+1, and slot #n+2. Also, the region 6001 includes a part of the time region of slot #n+3 and is also referred to as a downlink region.

[0173] In FIG. 6, the region 6002 includes a part of the time region of slot #n+3. The region 6002 is also referred to as a flexible region.

[0174] In FIG. 6, region 6003 includes a part of the time region of slot #n+3. Also, region 6003 includes the time region of slot #n+4. Region 6003 is also referred to as the uplink region.

[0175] In FIG. 6, region 6011 includes the time regions of slots #n+5, #n+6, and #n+7. Also, region 6011 includes a part of the time region of slot #n+8. Region 6011 is also referred to as the downlink region.

[0176] In FIG. 6, region 6012 includes a part of the time region of slot #n+8. Region 6012 is also referred to as the flexible region.

[0177] In FIG. 6, region 6013 includes a part of the time region of slot #n+8. Also, region 6013 includes the time region of slot #n+9. Region 6013 is also referred to as the uplink region.

[0178] For example, the configuration of the downlink region may be determined based on the common RRC parameters provided by the radio resource control layer processing unit 16. Also, the configuration of the flexible region may be determined based on the common RRC parameters provided by the radio resource control layer processing unit 16. Also, the configuration of the uplink region may be determined based on the common RRC parameters provided by the radio resource control layer processing unit 16.

[0179] The OFDM symbols included in the downlink region are also referred to as downlink symbols. Also, the OFDM symbols included in the flexible region are also referred to as flexible symbols. Also, the OFDM symbols included in the uplink region are also referred to as uplink symbols.

[0180] The flexible region is an area that can be changed based on dedicated RRC parameters. For example, the dedicated RRC parameters can change a part of the flexible region to the downlink region. Also, the dedicated RRC parameters can change a part of the flexible region to the uplink region.

[0181] The flexible region is an area that can be changed based on the information indicated by DCI format 2_0. For example, the information indicated by DCI format 2_0 can change a part of the flexible region to a downlink region. Also, the information indicated by DCI format 2_0 can change a part of the flexible region to an uplink region.

[0182] In FIG. 6, 6100 is a PDCCH. Here, the DCI format included in the PDCCH 6100 is used for scheduling of the PUSCH. After detecting the DCI format included in the PDCCH 6100, the terminal device 1 determines the transmission occasion of the PUSCH. Here, as a method for determining the transmission occasion of the PUSCH, either physical slot counting or available slot counting may be used. As a method, either physical slot counting or available slot counting may be used.

[0183] FIG. 6 shows an example of physical slot counting when the repetition number K is 4. Here, in physical slot counting, four slots from the first slot of the PUSCH (slot #n + 3) to slot #n + 6 are specified. One transmission occasion is arranged in each of the four specified slots. That is, the transmission occasion 6101 is arranged in slot #n + 3, the transmission occasion 6102 is arranged in slot #n + 4, the transmission occasion 6103 is arranged in slot #n + 5, and the transmission occasion 6104 is arranged in slot #n + 6. That is, in physical slot counting, the physical layer processing unit 10 may specify four consecutive slots starting from the first slot of the PUSCH.

[0184] That is, in physical slot counting, the physical layer processing unit 10 may specify four consecutive slots starting from the first slot of the PUSCH.

[0185] Here, the starting slot of the PUSCH may be determined based on the information provided by the DCI format. For example, one row of a TDRA (Time Domain Resource Assignment) table may be specified according to the value of the time domain resource allocation field included in the DCI format. Here, the starting slot of the PUSCH may be determined based on the parameter K2 associated with the specified row. Here, the parameter K2 may be a parameter that provides the slot offset from the slot where the PDCCH 6100 is located to the starting slot of the PUSCH.

[0186] At least the parameter K2 may be associated with each row of one TDRA table.

[0187] FIG. 7 is a diagram showing a configuration example of a TDRA table according to an aspect of the present embodiment. The TDRA table shown in FIG. 7 includes four rows, and each row corresponds to one value. For example, when the value of the time domain resource allocation field is 0, the slot offset K2 is 3, the starting symbol index S is 0, the length L of the PUSCH is 14, and the number of repetitions K is 4. In this way, the base station device 3 can control the time domain resources of the PUSCH by setting the value of the time domain resource allocation field to an appropriate value. Also, the terminal device 1 can specify the values of the parameter K2, SLIV, and the number of repetitions K based on the value of the time domain resource allocation field.

[0188] Here, SLIV is defined as a parameter for determining the starting symbol index S and the length L of the PUSCH. The value of SLIV may be given by the joint coding of S and L in some cases.

[0189] The start symbol index S is a parameter indicating the index of the OFDM symbol at which one transmission opportunity of the PUSCH starts. Also, the length L of the PUSCH is a parameter indicating the number of OFDM symbols in one transmission opportunity of the PUSCH.

[0190] Also, the number of repetitions K is a parameter used to determine the number of transmission opportunities determined for the transmission of the PUSCH.

[0191] Thus, the TDRA table may be a table used to determine some or all of the start symbol index S of the PUSCH, the length L of the PUSCH, the parameter K2, and the number of repetitions K of the PUSCH.

[0192] FIG. 8 is a diagram showing an example of the transmission of the PUSCH according to one aspect of the present embodiment. After detecting the DCI format included in the PDCCH 6100, the terminal device 1 determines a transmission opportunity of the PUSCH. In FIG. 8, the available slot count is used as a method for determining the transmission opportunity of the PUSCH.

[0193] For example, in the available slot count, among the available slots after the start slot of the PUSCH, the first K slots may be specified. In FIG. 8, first, the availability of slots after the start slot (slot #n + 3) of the PUSCH is examined, and slots #n + 3, n + 4, n + 8, n + 9 corresponding to the first K slots among the available slots determined based on the examination are specified. One transmission opportunity is arranged for each of the specified four available slots. That is, the transmission opportunity 8101 is arranged in slot #n + 3, the transmission opportunity 8102 is arranged in slot #n + 4, the transmission opportunity 8103 is arranged in slot #n + 8, and the transmission opportunity 8104 is arranged in slot #n + 9.

[0194] In this way, the physical slot count (first slot count) may be a method in which slots after the first slot of the PUSCH are counted and K slots are identified. That is, the physical slot count (first slot count) may be a method in which slots are counted without performing an availability check for each slot and K slots are identified. Also, the available slot count (second slot count) may be a method in which available slots among the slots after the first slot of the PUSCH are counted and K available slots are identified. That is, the available slot count may be a method in which slots are counted based on an availability check for each slot and K available slots are identified. Note that the identification of available slots (availability check of slots) will be described later.

[0195] In another example, the available slot count may be a method in which available slots among the slots after the first slot of the PUSCH are counted and identified. That is, the available slot count may be a method in which slots are counted based on an availability check for each slot after the first slot of the PUSCH and K - 1 available slots are identified. Here, the first slot of the PUSCH may be determined to be an available slot without being based on an availability check of the slot. As a result, the available slot count may identify a total of K available slots, which are one available slot and K - 1 available slots based on an availability check for each slot after the first slot of the PUSCH.

[0196] Here, in the inspection of the availability of slots, an inspection of the availability of a set of OFDM symbols may be performed. Here, the set of OFDM symbols may be determined based on the start symbol index S of the PUSCH and the length L of the PUSCH. For example, the set of OFDM symbols may include OFDM symbols from the OFDM symbol with index S to the OFDM symbol with index S+L-1.

[0197] In the inspection of the availability of slots, a slot in which at least one of the following Item 1 and Item 2 is satisfied for the set of OFDM symbols may be determined as an available slot. Item 1: None of the OFDM symbols included in the set of OFDM symbols is a downlink symbol determined by the RRC parameter. Item 2: None of the OFDM symbols included in the set of OFDM symbols is an OFDM symbol configured for the transmission of the SS / PBCH block. That is, the availability of the slot may be determined based on one or both of whether the set of OFDM symbols includes a downlink symbol determined by the RRC parameter and whether the set of OFDM symbols includes an OFDM symbol configured for the transmission of the SS / PBCH block. Note that the inspection based on Item 2 may be performed for the flexible symbols determined by the RRC parameter.

[0198] The availability of the slot may not be affected by the change of the flexible region by DCI format 2_0. For example, even if a part of the set of OFDM symbols is a flexible symbol and the flexible symbol is changed to a downlink symbol by the information provided by DCI format 2_0, the inspection of the availability of the slot may be performed on the assumption that a part of the set of OFDM symbols is a flexible symbol.

[0199] RRC parameters indicating settings for transmission of the SS / PBCH block may be provided by the radio resource control layer processing unit 16.

[0200] The physical layer processing unit 10 may provide the number of repetitions K or the number of specified transmission opportunities to the media access control layer processing unit 15. Also, the physical layer processing unit 10 may provide HARQ information related to the transmission of the PUSCH to the media access control layer processing unit 15.

[0201] The media access control layer processing unit may call the HARQ process up to K times based on the uplink grant corresponding to DCI format 6100. Here, each time the HARQ process is called, the HARQ process may give a transmission instruction for the PUSCH to the physical layer processing unit 10.

[0202] The physical layer processing unit 10 may perform the transmission of the PUSCH according to the transmission instruction of the PUSCH from the HARQ process. Note that the transmission of the PUSCH may be omitted (aborted, dropped). For example, the transmission of the PUSCH may be omitted when any one of items 3 to 6 is satisfied for a set of OFDM symbols. Item 3: At least any one of the OFDM symbols included in the set of OFDM symbols is a downlink symbol Item 4: At least any one of the OFDM symbols included in the set of OFDM symbols is an OFDM symbol set for transmission of the SS / PBCH block Item 5: At least a part of the transmission of the PUSCH collides with a PUSCH having a higher priority than the PUSCH Item 6: At least a part of the transmission of the PUSCH collides with the PRACH In the determination of whether or not PUSCH transmission is omitted, changes to the flexible region based on DCI format 2_0 may be considered. For example, if a part of a set of OFDM symbols is a flexible symbol and the flexible symbol is changed to a downlink symbol by information provided by DCI format 2_0, the determination of whether or not PUSCH transmission is omitted may be performed under the assumption that a part of the set of OFDM symbols is a downlink symbol.

[0203] The TDRA table referred to for Message 3 PUSCH may not include a parameter indicating the number of repetitions K. In such a case, another method for providing the number of repetitions K for Message 3 PUSCH is required.

[0204] For example, the MCS field included in the random access response grant may be used to provide the number of repetitions K. For example, X bits out of the 4-bit MCS field included in the random access response grant may be used for setting the number of repetitions K. Here, the remaining 4 - X bits of the MCS field may be used to indicate the MCS index. Here, the MCS index is associated with a set of a certain modulation scheme and a value of a certain target coding rate.

[0205] For example, based on the value of the X bits, the number of repetitions K may be determined. For example, if X = 2 and the set of the number of repetitions K is given as {1, 2, 4, 8}, the code point of the X = 2 bits is set to indicate any one of the set of the number of repetitions K. It may also be set. For example, when the X = 2-bit code point is '00', it may be associated with 1 which is the first element of the set of the number of repetitions K. Also, when the X = 2-bit code point is '01', it may be associated with 2 which is the second element of the set of the number of repetitions K. When the X = 2-bit code point is '10', it may be associated with 4 which is the third element of the set of the number of repetitions K. When the X = 2-bit code point is '11', it may be associated with 8 which is the fourth element of the set of the number of repetitions K.

[0206] For example, the set of the number of repetitions K may be provided by RRC signaling. Also, the set of the number of repetitions K may be provided by common RRC signaling. Also, the set of the number of repetitions K may be provided by SIB1.

[0207] On the other hand, the 4 - X-bit code point may be set to indicate the MCS index. For example, when X = 2, the 4 - X = 2-bit code point may be set to indicate any one of the set of the number of repetitions K. For example, the 4 - X = 2-bit code point '00' may be associated with MCS index 0. Also, the 4 - X = 2-bit code point '01' may be associated with MCS index 1. Also, the 4 - X = 2-bit code point '10' may be associated with MCS index 2. Also, the 4 - X = 2-bit code point '11' may be associated with MCS index 3.

[0208] As described above, the method of indicating the number of repetitions K using a part of the bits of the MCS field has a problem of reducing the candidates of the MCS index available for the message 3 PUSCH.

[0209] For example, by selectively using a plurality of sets of MCS index candidates, it is possible to alleviate the problem of the reduction of the candidates of the available MCS index.

[0210] For example, a first set of MCS index candidates and a second set of MCS index candidates may be provided. Here, the physical layer processing unit 10 determines, based on 1) candidate set parameters determined by a value of a field included in the random access response grant and different from the MCS field, or 2) one or both of the resource amounts of the PUSCH scheduled by the random access response grant, which of the first set of MCS index candidates and the second set of MCS index candidates to use for the PUSCH.

[0211] For example, the time domain resource allocation field included in the random access response grant may be used to determine candidate set parameters for use in selecting an MCS index candidate set.

[0212] FIG. 9 is a diagram showing a configuration example of a TDRA table according to an aspect of the present embodiment. The table shown in FIG. 9 includes a column indicating candidate set parameters. That is, for a row corresponding to a certain value of the time domain resource allocation field, one value regarding the parameters corresponds. Here, the fact that the value of the candidate set parameter is 0 may correspond to the physical layer processing unit 10 selecting the first set of MCS index candidates. Also, the fact that the value of the candidate set parameter is 1 may correspond to the physical layer processing unit 10 selecting the second set of MCS index candidates.

[0213] For example, the frequency resource allocation field included in the random access response grant may be used to determine the candidate set parameters.

[0214] For example, the CSI request field included in the random access response grant may be used to determine the candidate set parameters.

[0215] For example, based on the length L of the PUSCH scheduled by a random access response grant, the physical layer processing unit 10 may determine a set of MCS index candidates. For example, based on a comparison between the length L of the PUSCH scheduled by a random access response grant and a predetermined value, the physical layer processing unit 10 may select a set of MCS index candidates. For example, when L is greater than or equal to the predetermined value, the physical layer processing unit 10 may select a first set of MCS index candidates. Also, when L is less than the predetermined value, the physical layer processing unit 10 may select a second set of MCS index candidates.

[0216] For example, the number L of OFDM symbols used for data in the PUSCH scheduled by a random access response grant D Based on this, the physical layer processing unit 10 may determine a set of MCS index candidates. Here, the number L of OFDM symbols used for data in the PUSCH D May be given as a value obtained by subtracting the number L of OFDM symbols of DMRS per slot for the PUSCH from the length L of the PUSCH. For example, L DMRS Based on a comparison between and a predetermined value, the physical layer processing unit 10 may select a set of MCS index candidates. For example, L D When is greater than or equal to the predetermined value, the physical layer processing unit 10 may select a first set of MCS index candidates. Also, L D When is less than the predetermined value, the physical layer processing unit 10 may select a second set of MCS index candidates. D When is less than the predetermined value, the physical layer processing unit 10 may select a second set of MCS index candidates.

[0217] For example, based on the number N of resource blocks of the PUSCH scheduled by a random access response grant RB Based on this, the physical layer processing unit 10 may determine a set of MCS index candidates. For example, the number N of resource blocks of the PUSCH scheduled by a random access response grant RBBased on the comparison with a predetermined value, the physical layer processing unit 10 may select a set of MCS index candidates. For example, if N RB is greater than or equal to the predetermined value, the physical layer processing unit 10 may select the first set of MCS index candidates. Also, if N RB is less than the predetermined value, the physical layer processing unit 10 may select the second set of MCS index candidates.

[0218] For example, based on the number N RE of resource elements of the PUSCH scheduled by the random access response grant, the physical layer processing unit 10 may determine a set of MCS index candidates. Here, N RE may be given by L*N RB *N RB sc Or N RE may be given by (L - L DMRS )*N RB *N RB sc For example, based on the comparison between N RE and a predetermined value, the physical layer processing unit 10 may select a set of MCS index candidates. For example, if N RE is greater than or equal to the predetermined value, the physical layer processing unit 10 may select the first set of MCS index candidates. Also, if N RE is less than the predetermined value, the physical layer processing unit 10 may select the second set of MCS index candidates.

[0219] For example, DCI format 0_0 with a CRC sequence scrambled by TC-RNTI may include a field indicating candidate set parameters. That is, when the PUSCH is scheduled by DCI format 0_0 with a CRC sequence scrambled by TC-RNTI, the physical layer processing unit 10 may determine the candidate set parameters according to the value of the field included in the DCI format.

[0220] For example, DCI format with a CRC sequence scrambled by TC-RNTI T0_0 may include a parameter indicating the number of repetitions. Here, the MCS field included in the DCI format 0_0 may not be used to indicate the number of repetitions.

[0221] Next, aspects of various apparatuses according to one aspect of the present embodiment will be described.

[0222] (1) To achieve the above object, an aspect of the present invention takes the following means. That is, a first aspect of the present invention is a terminal device, including a receiving unit that acquires a random access response grant, and a transmitting unit that transmits a PUSCH scheduled by the random access response grant. The MCS field included in the random access response grant is set to indicate one MCS value from one set of MCS index candidates. The transmitting unit selects the one set of MCS index candidates from a plurality of sets of MCS index candidates based on one or both of 1) the resource amount of the PUSCH and 2) the value of a field other than the MCS field included in the random access response grant.

[0223] (2) Further, a second aspect of the present invention is a base station device, including a transmitting unit that transmits a random access response grant, and a receiving unit that receives a PUSCH scheduled by the random access response grant. The MCS field included in the random access response grant is set to indicate one MCS value from one set of MCS index candidates. The receiving unit selects the one set of MCS index candidates from a plurality of sets of MCS index candidates based on one or both of 1) the resource amount of the PUSCH and 2) the value of a field other than the MCS field included in the random access response grant.

[0224] The base station apparatus 3 and the program operating on the terminal apparatus 1 according to the present invention may be a program (a program that causes a computer to function) that controls a CPU (Central Processing Unit) or the like so as to realize the functions of the above-described embodiment according to the present invention. The information handled by these apparatuses is temporarily stored in a RAM (Random Access Memory) during its processing, and then stored in various ROMs such as a Flash ROM (Read Only Memory) and an HDD (Hard Disk Drive), read by the CPU as necessary, and corrected and rewritten.

[0225] Note that a part of the terminal apparatus 1 and the base station apparatus 3 in the above-described embodiment may be realized by a computer. In that case, a program for realizing this control function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read into a computer system and executed to realize it.

[0226] Here, the "computer system" means a computer system built in the terminal apparatus 1 or the base station apparatus 3 and includes hardware such as an OS and peripheral devices. Further, the "computer-readable recording medium" means a portable medium such as a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, or a storage device such as a hard disk built in a computer system.

[0227] ​​Furthermore, the "computer-readable recording medium" may include those that hold a program dynamically for a short time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, and those that hold a program for a certain period of time, such as a volatile memory inside a computer system serving as a server or a client in that case. Also, the above program may be for realizing a part of the functions described above, and furthermore, it may be possible to realize the functions described above in combination with a program already recorded in the computer system.

[0228] In addition, the base station device 3 in the above-described embodiment can also be realized as an aggregate (device group) composed of a plurality of devices. Each of the devices constituting the device group may include some or all of the functions or function blocks of the base station device 3 related to the above-described embodiment. As long as the device group has all the functions or function blocks of the base station device 3, it is sufficient. Also, the terminal device 1 related to the above-described embodiment can also communicate with the base station device as an aggregate.

[0229] In addition, the base station device 3 in the above-described embodiment may be an EUTRAN (Evolved Universal Terrestrial Radio Access Network) and / or an NG-RAN (NextGen RAN, NR RAN). Also, the base station device 3 in the above-described embodiment may have some or all of the functions of a higher-level node with respect to an eNodeB and / or a gNB.

[0230] Further, part or all of the terminal device 1 and the base station device 3 in the above-described embodiment may typically be realized as an LSI, which is an integrated circuit, or may be realized as a chip set. Each functional block of the terminal device 1 and the base station device 3 may be individually chipified, or part or all of them may be integrated and chipified. Also, the method of integrating into an integrated circuit is not limited to an LSI, and it may be realized by a dedicated circuit or a general-purpose processor. Further, when a technology for integrating into an integrated circuit that replaces an LSI appears due to the progress of semiconductor technology, it is also possible to use an integrated circuit based on such technology.

[0231] Also, in the above-described embodiment, a terminal device is described as an example of a communication device, but the invention of the present application is not limited thereto, and it can also be applied to stationary or non-mobile electronic devices installed indoors and outdoors, such as terminal devices or communication devices of AV devices, kitchen devices, cleaning and washing devices, air conditioning devices, office devices, vending machines, and other household devices.

[0232] As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes and the like within the scope not departing from the gist of the present invention are also included. Further, the present invention can be variously modified within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments are also included in the technical scope of the present invention. Also, a configuration in which elements described in the above embodiments and having the same effects are replaced with each other is included.

Explanation of Reference Numerals

[0233] 1(1A, 1B, 1C) Terminal device 3 Base station device 9 Wireless communication system 10, 30 Physical layer processing unit 10a, 30a Wireless transmission unit 10b, 30b Wireless reception unit 11, 31 Antenna unit 12, 32 RF unit 13, 33 Baseband unit 14, 34 Upper layer processing unit 15, 35 Media Access Control Layer Processing Unit 16, 36 Radio Resource Control Layer Processing Unit 6000, 6010 Pattern 6001, 6002, 6003, 6011, 6012, 6013 Region 6100 PDCCH 6101, 6102, 6103, 6104, 8101, 8102, 8103, 8104 Transmission Opportunity

Claims

1. A receiving unit that acquires a random access response grant; A transmitting unit that transmits a PUSCH scheduled by the random access response grant, and The MCS field included in the random access response grant is set to indicate one MCS value from one set of MCS index candidates, The transmitting unit selects the one set of MCS index candidates from a plurality of sets of MCS index candidates based on one or both of 1) the resource amount of the PUSCH and 2) the value of a field other than the MCS field included in the random access response grant. A terminal device.

2. A transmitting unit that transmits a random access response grant; A receiving unit that receives a PUSCH scheduled by the random access response grant, and The MCS field included in the random access response grant is set to indicate one MCS value from one set of MCS index candidates, The receiving unit selects the one set of MCS index candidates from a plurality of sets of MCS index candidates based on one or both of 1) the resource amount of the PUSCH and 2) the value of a field other than the MCS field included in the random access response grant. A base station device.

3. A communication method used in a terminal device, comprising: Acquiring a random access response grant; and Transmitting a PUSCH scheduled by the random access response grant, and The MCS field included in the random access response grant is set to indicate one MCS value from one set of MCS index candidates, The one set of MCS index candidates is selected from a plurality of sets of MCS index candidates based on one or both of 1) the resource amount of the PUSCH and 2) the value of a field other than the MCS field included in the random access response grant. A communication method.

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