WO2023112887A1 - Terminal device, base station device, and communication method - Google Patents

Abstract

The present invention selects one random access resource set from a first random access resource set and a second random access resource set, transmits PRACH in a random access resource which is selected from the one random access resource set, receives a random access response grant related to a random access preamble index related to the PRACH, transmits PUSCH which is scheduled by the received random access response grant, and stops monitoring a downlink which overlaps the PUSCH on the basis of the selection of the first random access resource set from among the first and second random access resource sets as the one random access resource set.

Description

TERMINAL DEVICE, BASE STATION DEVICE, AND COMMUNICATION METHOD

The present invention relates to a terminal device, a base station device, and a communication method.
This application claims priority to Japanese Patent Application No. 2021-201330 filed in Japan on December 13, 2021, the content of which is incorporated herein.

Radio access schemes and radio networks for cellular mobile communications (hereafter also referred to as “Long Term Evolution (LTE)” or “EUTRA: Evolved Universal Terrestrial Radio Access”) are being developed under the Third Generation Partnership Project (3GPP: 3 ^rd Generation Partnership Project (registered trademark). In LTE, a base station device is also called eNodeB (evolved NodeB), and a terminal device is also called UE (User Equipment). LTE is a cellular communication system in which a plurality of areas covered by base station devices are arranged in a cell. A single base station device may manage multiple serving cells.

3GPP is considering the next-generation standard (NR: New Radio) to propose to IMT (International Mobile Telecommunication)-2020, which is the next-generation mobile communication system standard formulated by the International Telecommunication Union (ITU). is performed (Non-Patent Document 1). NR is required to meet the requirements of three scenarios: eMBB (enhanced Mobile BroadBand), mMTC (massive Machine Type Communication), and URLLC (Ultra Reliable and Low Latency Communication) within a single technology framework. there is

It is expected that functional expansion of cellular mobile communications such as NR will be considered. For example, as shown in Non-Patent Document 2, studies on extending the function of NR have started.

One aspect of the present invention provides a terminal device, a base station device, and a communication method used in the terminal device for performing efficient communication.

(1) A first aspect of the present invention is a terminal device, which manages a first random access resource set and a second random access resource set, and in a random access procedure, the first random access resource set and the second random access resource set, a MAC layer processing unit for selecting one random access resource set from the second random access resource set, transmitting a PRACH in the random access resource selected from the one random access resource set, and associated with the PRACH a physical layer processing unit that receives a random access response grant associated with a random access preamble index that corresponds to the random access preamble index and transmits a PUSCH scheduled according to the received random access response grant; Downlink overlapping with the PUSCH based on selecting the first random access resource set as the one random access resource set from one random access resource set and the second random access resource set stop monitoring the

(2) A second aspect of the present invention is a base station apparatus, which manages a first random access resource set and a second random access resource set, and in a random access procedure, the first random access resource a MAC layer processing unit that selects one random access resource set from the set and the second random access resource set; receives a PRACH in the random access resource selected from the one random access resource set; a physical layer processing unit that transmits a random access response grant associated with an associated random access preamble index and receives a PUSCH scheduled according to the transmitted random access response grant; Based on the fact that the first random access resource set is selected as the one random access resource set from the first random access resource set and the second random access resource set, the downlink that overlaps with the PUSCH Stop sending signals on the link.

(3) A third aspect of the present invention is a communication method used in a terminal device, managing a first random access resource set and a second random access resource set, and in a random access procedure, the first and the second random access resource set; transmitting a PRACH in random access resources selected from the one random access resource set; receiving a random access response grant associated with a random access preamble index associated with and transmitting a PUSCH scheduled according to the received random access response grant; and stopping downlink monitoring that overlaps with the PUSCH based on the fact that the first random access resource set is selected as the one random access resource set from the random access resource sets.

According to one aspect of the present invention, the terminal device can communicate efficiently. Also, the base station apparatus can communicate efficiently.

1 is a conceptual diagram of a wireless communication system 9 according to one aspect of the present embodiment; FIG. It is a figure which shows the structural example of the resource grid which concerns on one aspect|mode of this embodiment. 1 is a schematic block diagram showing a configuration example of a base station device 3 according to one aspect of the present embodiment; FIG. 1 is a schematic block diagram showing a configuration example of a terminal device 1 according to one aspect of the present embodiment; FIG. FIG. 4 is a diagram showing an example of a procedure related to PUSCH transmission between the terminal device 1 and the base station device 3 according to one aspect of the present embodiment; FIG. 4 is a diagram illustrating an example of PUSCH transmission according to an aspect of the present embodiment; FIG. 4 is a diagram showing a configuration example of a TDRA table according to one aspect of the present embodiment; FIG. 4 is a diagram illustrating an example of PUSCH transmission according to an aspect of the present embodiment;

Embodiments of the present invention will be described below.

　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 that does not exceed the real number C. ceil(D) may be the ceiling function for real D. For example, ceil(D) may be a function that outputs the smallest integer not less than the real number D. mod(E,F) may be a function that outputs the remainder of dividing E by F. mod(E,F) may be a function that outputs a value corresponding to the remainder of E divided by F. exp(G)=e^G. where e is the Napier number. H^I indicates H to the Ith power. max(J,K) is a function that outputs the maximum value of J and K. where max(J,K) is a function that outputs J or K if J and K are equal. min(L,M) is a function that outputs the maximum value of L and M. where min(L,M) is a function that outputs L or M when L and M are equal. round(N) is a function that outputs the integer value closest to N. “·” indicates multiplication.

FIG. 1 is a conceptual diagram of a wireless communication system 9 according to one aspect of the present embodiment. In FIG. 1, the wireless communication system includes terminal devices 1A to 1C and a base station device 3 (BS#3: Base station#3). Hereinafter, as a general term for the terminal devices 1A to 1C, a terminal device that communicates with the base station device 3 will also be referred to as a terminal device 1 (UE#1: User Equipment#1).

In the wireless communication system 9, the terminal device 1 and the base station device 3 may use one or more communication schemes. For example, in the downlink of the radio communication system 9, CP-OFDM (Cyclic Prefix--Orthogonal Frequency Division Multiplex) may be used. Also, in the uplink of the radio 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 scheme in which transform precoding is applied prior to signal generation in CP-OFDM. Here, modified precoding is also called DFT precoding.

As shown in FIG. 1, the base station device 3 may be configured by one transmitting/receiving device (or transmitting point, transmitting device, receiving point, receiving device, transmitting/receiving point). On the other hand, in some cases, the base station device 3 may be configured including a plurality of transmitting/receiving devices. When the base station device 3 is composed of a plurality of transmitting/receiving devices, each of the plurality of transmitting/receiving devices may be arranged at geographically different positions.

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

A serving cell may be configured to include one or both of one downlink component carrier and one uplink component carrier. A serving cell may include one or both of two or more downlink component carriers and two or more uplink component carriers. Downlink component carriers and uplink component carriers are also collectively referred to as component carriers.

　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.

Resources in the wireless communication system 9 may be managed by a resource grid using subcarrier indexes and OFDM symbol indexes.

A subcarrier spacing (SCS: SubCarrier Spacing) Δf for a given subcarrier spacing setting μ may be Δf=2 ^μ ·15 kHz. For example, the subcarrier spacing setting μ may indicate any of 0, 1, 2, 3, or 4.

The time unit T _c =1/(Δf _max ·N _f ) may be used for representing the length of the time domain. Here, Δf _max =480 kHz may be used. Alternatively, N _f =4096. Alternatively, the constant κ may be κ=Δf _max ·N _f /(Δf _ref ·N _f,ref )=64. Also, Δf _ref may be 15 kHz. N _f,ref is 2048;

The transmission of downlink/uplink signals may be organized into radio frames (system frames, frames) of length _Tf . Here, T _f =(Δf _max ·N _f /100)·T _s =10 ms may be satisfied.

A radio frame may consist of 10 subframes. Here, the length of the subframe may be T _sf =(Δf _max ·N _f /1000)·T _s =1 ms. Also, the number of OFDM symbols per subframe may be N ^{subframe, μ} _symb =N ^slot _symb ·N ^{subframe, μ} _slot .

An OFDM symbol is used as the unit of the time domain of the communication method used in the wireless communication system 9. For example, an OFDM symbol may be used as the unit of time domain for CP-OFDM. Also, an OFDM symbol may be used as a time domain unit for DFT-s-OFDM.

A slot may consist of multiple OFDM symbols. For example, one slot may be composed of consecutive N ^slot _symb OFDM symbols. For example, N ^slot _symb =14 in normal CP settings. Also, in setting the extended CP, N ^slot _symb =12 may be used.

Slots may be indexed in the time domain. For example, the slot index n ^μ _s may be given in ascending order by integer values ranging from 0 to N ^{subframe, μ} _slot −1 in subframes. Also, the slot indices n ^μ _s,f may be given in ascending order by integer values ranging from 0 to N ^{frame, μ} _slot −1 in the radio frame.

FIG. 2 is a diagram illustrating a configuration example of a resource grid according to one aspect of the present embodiment. In the resource grid of FIG. 2, the horizontal axis is the OFDM symbol index _lsym and the vertical axis is the subcarrier index _ksc . The resource grid of FIG. 2 includes N ^{size, μ} _{grid, x} ·N ^RB _sc subcarriers and N ^{subframe, μ} _symb OFDM symbols. Here, N ^{size, μ} _{grid, x} indicates the bandwidth of the SCS specific carrier. Also, the units of the values of N ^{size, μ} _{grid, and x} are resource blocks.

Within the resource grid, the resource determined by the subcarrier index k _sc and the OFDM symbol index l _sym is also called a resource element (RE).

A resource block (RB) includes N ^RB _sc consecutive subcarriers. 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 =12.

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

Antenna ports may be defined by the fact that the channel over which symbols at one antenna port are conveyed can be estimated from the channels over which other symbols at that antenna port are conveyed. 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, a channel may correspond to a physical channel. A symbol may also correspond to a modulation symbol that is placed on a resource element. Here, "channel" may mean "propagation path". Also, "channel" may mean "physical channel".

Two antenna ports are Quasi Co-Located (QCL) if the large scale property of the channel over which the symbols are conveyed at one antenna port can be estimated from the channel over which the symbols are conveyed at the other antenna port. ) are considered to be in a relationship. Here, the large-scale characteristics may include long-term characteristics of the channel. Large-scale properties are delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters. You may include a part or all. A first antenna port and a second antenna port are QCL with respect to beam parameters if the receive beam expected by the receiver for the first antenna port and the receive beam expected by the receiver for the second antenna port and may be the same (or correspond). A first antenna port and a second antenna port are QCL with respect to beam parameters if the transmit beam assumed by the receiver for the first antenna port and the transmit beam assumed by the receiver for the second antenna port and may be the same (or correspond). The terminal device 1 assumes that the two antenna ports are QCL when the large-scale characteristics of the channel through which the symbols are transmitted through one antenna port can be estimated from the channel through which the symbols are transmitted through another antenna port. may be Two antenna ports being QCL may be assumed to be two antenna ports being QCL.

Carrier aggregation may be communication using aggregated multiple serving cells. Also, carrier aggregation may be communication using a plurality of aggregated component carriers. Also, carrier aggregation may be communication using a plurality of aggregated downlink component carriers. Also, carrier aggregation may be communication using a plurality of aggregated uplink component carriers.

FIG. 3 is a schematic block diagram showing a configuration example of the base station device 3 according to one aspect of the present embodiment. As shown in FIG. 3 , the base station device 3 includes a physical layer processing unit (radio transmitting/receiving unit) 30 and/or a part or all of 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 upper 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: Radio Resource Control) layer processing unit 36 .

The physical layer processing unit 30 performs physical layer processing. Here, the processing of the physical layer includes generation of baseband signals for physical channels, generation of baseband signals for physical signals, detection of information transmitted from physical channels, and detection of information transmitted by physical signals. It may include part or all. The physical layer processing may also include the mapping of transport channels to physical channels. Here, the baseband signal is also called a time-continuous signal.

For example, the physical layer processing unit 30 may generate a baseband signal of a downlink physical channel. Here, transport blocks delivered from higher layers on the DL-SCH may be arranged in downlink physical channels.

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

For example, the physical layer processing unit 30 may attempt to detect information conveyed by the uplink physical channel. Here, transport blocks among the information carried by the uplink physical channel may be delivered to higher layers on the UL-SCH.

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

The upper layer processing unit 34 performs part or all of the processing of the MAC (Medium Access Control) layer, the packet data convergence protocol (PDCP) layer, the radio link control (RLC) layer, and the RRC layer. do Here, the MAC layer is also called MAC sublayer. The PDCP layer is also called a PDCP sublayer. An RLC layer is also referred to as an RLC sublayer. The RRC layer is also called an RRC sublayer.

The medium access control layer processing unit (MAC layer processing unit) 35 performs MAC layer processing. Here, MAC layer processing includes mapping between logical channels and transport channels, multiplexing of one or more MAC SDUs (Service Data Units) into transport blocks, and delivery from the physical layer on UL-SCH. It may include some or all of the decomposition of a transport block into one or more MAC SDUs, the application of HARQ (Hybrid Automatic Repeat reQuest) to the transport block, and the processing of scheduling requests.

The radio resource control layer processing unit 36 performs RRC layer processing. The processing of the RRC layer may include part or all of management of broadcast signals, management of RRC connection/RRC idle state, and RRC reconfiguration.

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 include an RRC parameter in an RRC message on a certain logical channel and transmit the RRC parameter to the terminal device 1 . Here, the RRC message may be mapped to any of BCCH (Broadcast Control CHannel), CCCH (Common Control CHannel), and DCCH (Dedicated Control CHannel).

The radio resource control layer processing unit 36 may determine the 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 relate to the capability information report of the terminal device 1 .

The physical layer processing unit 30 may perform part or all of modulation processing, encoding processing, and transmission processing. The physical layer processing unit 30 may generate a physical signal based on part or all of the encoding processing, modulation processing, and baseband signal generation processing for transport blocks. The physical layer processing unit 30 may map physical signals to a certain BWP. The physical layer processing unit 30 may transmit the generated physical signal.

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 of the information detected based on the demodulation processing and decoding processing for the received physical signal to the upper layer on the UL-SCH.

In the band of the serving cell, if implementation of carrier sense is required, the physical layer processing unit 30 may implement carrier sense prior to transmission of the physical signal.

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 section 32 outputs the baseband signal to the baseband section 33 .

The baseband section 33 may digitize the baseband signal input from the RF section 32 . The baseband unit 33 may remove a portion corresponding to CP (Cyclic Prefix) from the digitized baseband signal. The baseband unit 33 may perform a fast Fourier transform (FFT) on the CP-removed baseband signal to extract a signal in the frequency domain.

The baseband unit 33 may generate a baseband signal by inverse fast Fourier transform (IFFT) of 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 the CP is added. The baseband section 33 may output the analogized baseband signal to the RF section 32 .

The RF section 32 may remove extra frequency components from the baseband signal input from the baseband section 33 . The RF section 32 may upconvert the baseband signal to a carrier frequency to generate the RF signal. The RF section 32 may transmit RF signals via the antenna section 31 . Also, the RF unit 32 may have a function of controlling transmission power.

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

Each of the serving cells configured for the terminal device 1 is either PCell (Primary cell, primary cell), PSCell (Primary SCG cell, primary SCG cell), and SCell (Secondary Cell, secondary cell) good too.

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

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

SCell may be included in either MCG or SCG.

A serving cell group (cell group) is a generic term for MCG, SCG, and PUCCH cell groups. A serving cell group may include one or more serving cells (or component carriers). One or more serving cells (or component carriers) included in a serving cell group may be operated by carrier aggregation.

One or more downlink BWPs may be set for the terminal device 1. One or more uplink BWPs may be configured for the terminal device 1 .

Among one or more downlink BWPs configured for the terminal device 1, one downlink BWP may be configured as an active downlink BWP (or one downlink BWP may be activated). . Among one or more uplink BWPs configured for the terminal device 1, one uplink BWP may be configured as an active uplink BWP (or one uplink BWP may be activated). .

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

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

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

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

Of the one or more downlink BWPs set for the terminal device 1, two or more downlink BWPs may not be set as active downlink BWPs. For a given component carrier, one downlink BWP may be active at a given time.

Of the one or more uplink BWPs set for the terminal device 1, two or more uplink BWPs may not be set as active uplink BWPs. For a given component carrier, one uplink BWP may be active at a given time.

One downlink BWP may be set as the active BWP for each downlink component carrier. That is, two or more downlink BWPs may not be set as active downlink BWPs for a certain downlink component carrier.

One uplink BWP may be set as the active BWP for each uplink component carrier. That is, two or more uplink BWPs may not be set as active uplink BWPs for a certain uplink component carrier.

FIG. 4 is a schematic block diagram showing a configuration example of the terminal device 1 according to one aspect of the present embodiment. As shown in FIG. 4 , the terminal device 1 includes a physical layer processing section (radio transmitting/receiving section) 10 and part or all of an upper layer processing section 14 . Radio transmitting/receiving section 10 includes part or all of antenna section 11 , RF section 12 , and baseband section 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 .

The physical layer processing unit 10 performs physical layer processing.

For example, the physical layer processing unit 10 may generate baseband signals for uplink physical channels. Here, transport blocks delivered from higher layers on the UL-SCH may be arranged in uplink physical channels.

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

For example, the physical layer processing unit 10 may attempt to detect information transmitted by the downlink physical channel. Here, transport blocks among the information conveyed by the downlink physical channel may be delivered to higher layers on the DL-SCH.

For example, the physical layer processing unit 10 may attempt to detect information transmitted by downlink physical signals.

Upper layer processing unit 14, MAC (Medium Access Control) layer, packet data convergence protocol (PDCP: Packet Data Convergence Protocol) layer, radio link control (RLC: Radio Link Control) layer, some or all of the processing of the RRC layer do

The medium access control layer processing unit (MAC layer processing unit) 15 performs MAC layer processing.

The radio resource control layer processing unit 16 performs RRC layer processing.

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 RRC parameters included in an 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 lower layers.

The radio resource control layer processing unit 16 may include 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 .

The physical layer processing unit 10 may perform part or all of 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 transport blocks. The physical layer processing unit 10 may map physical signals to a certain BWP. The physical layer processing unit 10 may transmit the generated physical signal.

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

In the band of the serving cell, if implementation of carrier sense is required, the physical layer processing unit 10 may implement carrier sense prior to transmission of the physical signal.

The RF unit 12 may convert the signal received via the antenna unit 11 into a baseband signal and remove unnecessary frequency components. The RF section 12 outputs the baseband signal to the baseband section 13 .

The baseband section 13 may digitize the baseband signal input from the RF section 12 . The baseband unit 13 may remove a portion corresponding to CP (CyclicPrefix) from the digitized baseband signal. The baseband unit 13 may perform a fast Fourier transform (FFT) on the CP-removed baseband signal to extract a signal in the frequency domain.

The baseband unit 13 may generate a baseband signal by inverse fast Fourier transform (IFFT) of the physical signal. The baseband unit 13 may add CP to the generated baseband signal. The baseband unit 13 may analogize the baseband signal to which the CP is added. The baseband section 13 may output the analogized baseband signal to the RF section 12 .

The RF section 12 may remove extra frequency components from the baseband signal input from the baseband section 13 . The RF section 12 may upconvert the baseband signal to a carrier frequency to generate the RF signal. The RF section 12 may transmit RF signals via the antenna section 31 . Also, the RF unit 12 may have a function of controlling transmission power.

The physical signal will be explained below.

A physical signal is a general term for a downlink physical channel, a downlink physical signal, an uplink physical channel, and an uplink physical channel. 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.

An uplink physical channel may correspond to a set of resource elements that convey information originating in higher layers. An uplink physical channel may be a physical channel used in an uplink component carrier. An uplink physical channel may be transmitted by the physical layer processing unit 10 . An uplink physical channel may be received by the physical layer processing unit 30 . In the uplink of the radio communication system according to one 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)

PUCCH may be transmitted to deliver, transmit, and convey uplink control information (UCI). The uplink control information may be arranged (mapped) on the PUCCH. The physical layer processing unit 10 may transmit PUCCH in which uplink control information is arranged. The physical layer processing unit 30 may receive PUCCH in which uplink control information is arranged.

Uplink control information (uplink control information bit, uplink control information sequence, uplink control information type) includes channel state information (CSI: Channel State Information), scheduling request (SR: Scheduling Request), HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement) contains some or all of the information.

　Channel state information is also called a channel state information bit or a channel state information sequence. A scheduling request is also called a scheduling request bit or a scheduling request sequence. HARQ-ACK information is also called HARQ-ACK information bits or HARQ-ACK information sequence.

　HARQ-ACK information may consist of HARQ-ACK bits corresponding to a transport block (TB). Certain HARQ-ACK bits may indicate ACK (acknowledgement) or NACK (negative-acknowledgement) corresponding to the transport block. ACK may indicate that decoding of the transport block has been successfully completed (has been decoded). A NACK may indicate that decoding of the transport block has not been successfully completed (has not been decoded). The HARQ-ACK information may contain one or more HARQ-ACK bits.

　HARQ-ACK for transport blocks is also called HARQ-ACK for PDSCH. Here, "HARQ-ACK for PDSCH" indicates HARQ-ACK for transport blocks included in PDSCH.

A scheduling request may be used to request UL-SCH resources for a new transmission. The scheduling request bit may be used to indicate either positive SR or negative SR. The scheduling request bit indicating positive SR is also referred to as "positive SR is signaled". A positive SR may indicate that UL-SCH resources for initial transmission are requested by the medium access control layer processing unit 15 . The fact that the scheduling request bit indicates negative SR is also called "negative SR is sent". A negative SR may indicate that no UL-SCH resources for the initial transmission are requested by the medium access control layer processing unit 15 .

The channel state information may include some or all of a channel quality indicator (CQI: Channel Quality Indicator), a precoder matrix indicator (PMI: Precoder Matrix Indicator), and a rank indicator (RI: Rank Indicator). CQI is an index related to channel quality (eg, propagation strength) or physical channel quality, and PMI is an index related to precoders. RI is an index related to transmission rank (or number of transmission layers).

　Channel state information is an index related to the reception state of physical signals (eg, CSI-RS) used for channel measurement. The value of the channel state information may be determined by the terminal device 1 based on reception conditions assumed by the physical signals used for channel measurements. Channel measurements may include interference measurements.

PUCCH may be accompanied by a certain PUCCH format. Here, the PUCCH format may be a PUCCH physical layer processing format. Also, the PUCCH format may be the format of information conveyed using the PUCCH.

PUSCH may be transmitted to convey one or both of uplink control information and transport blocks. PUSCH may be used to convey one or both of uplink control information and transport blocks. The terminal device 1 may transmit PUSCH in which one or both of uplink control information and transport blocks are arranged. The base station apparatus 3 may receive PUSCH in which one or both of uplink control information and transport blocks are arranged.

A PRACH may be sent to convey the random access preamble index. The terminal device 1 may transmit PRACH. The base station device 3 may receive the PRACH. The terminal device 1 may transmit a random access preamble on PRACH. The base station device 3 may receive a random access preamble on PRACH.

An uplink physical signal may correspond to a set of resource elements. Uplink physical signals may not be used to convey information originating in higher layers. Note that the uplink physical signal may be used to convey information generated in the physical layer. The uplink physical signal may be a physical signal used in an uplink component carrier. The physical layer processing unit 10 may transmit an uplink physical signal. The physical layer processing unit 30 may receive an uplink physical signal. Some or all of the following uplink physical signals may be used in the uplink of the radio communication system according to one aspect of the present embodiment.
・UL DMRS (Uplink Demodulation Reference Signal)
・SRS (Sounding Reference Signal)
・UL PTRS (Uplink Phase Tracking Reference Signal)

　UL DMRS is a generic term for DMRS for PUSCH and DMRS for PUCCH.

A set of antenna ports for 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 DMRS antenna ports for a PUSCH may be the same as the set of antenna ports for the PUSCH.

The PUSCH propagation path may be estimated from the DMRS for the PUSCH.

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 PUCCH.

A PUCCH channel may be estimated from the DMRS for the PUCCH.

A downlink physical channel may correspond to a set of resource elements that convey information originating in higher layers. A downlink physical channel may be a physical channel used in a downlink component carrier. The physical layer processing unit 30 may transmit downlink physical channels. The physical layer processing unit 10 may receive downlink physical channels. Some or all of the following downlink physical channels may be used in the downlink of the radio communication system according to one aspect of the present embodiment.
・PBCH (Physical Broadcast Channel)
・PDCCH (Physical Downlink Control Channel)
・PDSCH (Physical Downlink Shared Channel)

The PBCH may be transmitted to convey one or both of the MIB (MIB: Master Information Block) and physical layer control information. Here, the physical layer control information is information generated in the physical layer. MIB is an RRC message delivered from the upper layer on BCCH (Broadcast Control CHannel).

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

The downlink control information may be transmitted with the DCI format. Note that the DCI format may be interpreted as the format of downlink control information. A DCI format may also be interpreted as a set of downlink control information set to a certain downlink control information format.

The base station device 3 may notify the terminal device 1 of downlink control information using a PDCCH with a DCI format. Here, the terminal device 1 may monitor the PDCCH to acquire downlink control information. Note that the DCI format and downlink control information are sometimes described as being equivalent, unless there is a special explanation. For example, the base station apparatus 3 may include downlink control information in the DCI format and transmit it to the terminal apparatus 1 . Also, the terminal device 1 may control the physical layer processing unit 10 using downlink control information included in the detected DCI format.

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. A downlink DCI format is a general term for DCI format 1_0 and DCI format 1_1.

DCI format 0_0 is used for scheduling of PUSCHs arranged in a certain cell. DCI format 0_0 may include some or all of the fields 1A through 1E.
1A) Identifier field for DCI formats
1B) Frequency domain resource assignment field
1C) Time domain resource assignment field
1D) 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.

The frequency domain resource allocation field included in DCI format 0_0 may be used to indicate the frequency resource allocation for PUSCH scheduled by this DCI format 0_0.

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

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

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

DCI format 0_0 may not include fields used for CSI requests (CSI requests).

DCI format 0_0 may not include a carrier indicator field. That is, the serving cell to which the uplink component carrier on which the PUSCH scheduled by DCI format 0_0 is allocated may be the same as the serving cell of the downlink component carrier on which the PDCCH including the DCI format 0_0 is allocated. Based on the detection of DCI format 0_0 in a certain downlink component carrier of a certain serving cell, the terminal device 1 recognizes that the PUSCH scheduled according to the DCI format 0_0 is allocated to the uplink component carrier of the certain serving cell. good too.

　DCI format 0_0 may not include the BWP field. Here, DCI format 0_0 may be a DCI format that schedules PUSCH without changing the active uplink BWP. Based on detection of DCI format 0_0 used for PUSCH scheduling, the terminal device 1 may recognize that the PUSCH will be transmitted without switching the active uplink BWP.

DCI format 0_1 is used for scheduling of PUSCHs arranged in a certain cell. The DCI format 0_1 is configured including some or all of the fields 2A to 2H.
2A) DCI format specification 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 specific field included in DCI format 0_1 may indicate 0.

The frequency domain resource allocation field included in DCI format 0_1 may be used to indicate frequency resource allocation for PUSCHs scheduled by this DCI format 0_1.

The time domain resource allocation field included in DCI format 0_1 may be used to indicate time resource allocation for PUSCHs scheduled by that DCI format 0_1.

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

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

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

Although the BWP field is included in DCI format 0_1, the BWP field may be ignored by the terminal device 1 if the terminal device 1 does not support the function of switching the BWP by DCI format 0_1. That is, the terminal device 1 that does not support the function of switching the BWP switches the active uplink BWP based on detecting the DCI format 0_1 used for scheduling of PUSCH and the DCI format 0_1 including the BWP field. It may be recognized to transmit the PUSCH without performing Here, if the BWP switching function is supported, the radio resource control layer processing unit 16 may include function information indicating that the BWP switching function is supported in the RRC message.

The CSI request field may be used to indicate CSI reporting.

When 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 on which PUSCH is allocated. Based on detecting DCI format 0_1 in the downlink component carrier of a certain serving cell, the terminal device 1 detects the uplink of the serving cell in which the PUSCH scheduled by the DCI format 0_1 is indicated by the carrier indicator field included in the DCI format 0_1. It may be recognized that it is located on a component carrier.

When the carrier indicator field is not included in DCI format 0_1, the serving cell to which the uplink component carrier on which the PUSCH scheduled by DCI format 0_1 is assigned belongs to the downlink component carrier on which the PDCCH including the DCI format 0_1 is assigned. It may be the same as the serving cell. Based on the detection of DCI format 0_1 in a certain downlink component carrier of a certain serving cell, the terminal device 1 recognizes that the PUSCH scheduled according to the DCI format 0_1 is allocated to the uplink component carrier of the certain serving cell. good too.

DCI format 1_0 is used for scheduling of PDSCH allocated in a certain cell. DCI format 1_0 includes part 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 DCI format 1_0 may indicate 1.

The frequency domain resource allocation field included in DCI format 1_0 may be used to indicate frequency resource allocation for PDSCHs scheduled by that DCI format.

The time domain resource allocation field included in DCI format 1_0 may be used to indicate time resource allocation for the PDSCH scheduled by that DCI format.

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

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

The PUCCH resource indication field may be used to indicate PUCCH resources.

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. Based on detecting DCI format 1_0 in a certain downlink component carrier, the terminal device 1 may recognize that the PDSCH scheduled according to DCI format 1_0 should be mapped to that downlink component carrier.

　DCI format 1_0 may not include the BWP field. Here, the DCI format 1_0 may be a DCI format that schedules the PDSCH without changing the active downlink BWP. Based on the detection of DCI format 1_0 used for PDSCH scheduling, the terminal device 1 may recognize that the PDSCH will be received without switching the active downlink BWP.

DCI format 1_1 is used for PDSCH scheduling allocated to a certain cell. The DCI format 1_1 includes 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.

The frequency domain resource allocation field included in DCI format 1_1 may be used to indicate frequency resource allocation for PDSCH scheduled by this DCI format 1_1.

The time domain resource allocation field included in DCI format 1_1 may be used to indicate time resource allocation for the PDSCH scheduled by this DCI format 1_1.

Because the MCS field included in DCI format 1_1 indicates one or both of the modulation scheme for PDSCH scheduled by this DCI format 1_1 and the target coding rate for PDSCH scheduled by this DCI format 1_1. may be used for

When DCI format 1_1 includes the PDSCH_HARQ feedback timing indication field, the PDSCH_HARQ feedback timing indication field indicates the offset from the slot including the last OFDM symbol of PDSCH to the slot including the first OFDM symbol of PUCCH. may be used for When the PDSCH_HARQ feedback timing indication field is not included in DCI format 1_1, a parameter indicating the offset from the slot including the last OFDM symbol of PDSCH to the slot including the first OFDM symbol of PUCCH is provided by the RRC layer. may

The PUCCH resource indication field may be used to indicate PUCCH resources.

The BWP field of DCI format 1_1 may be used to indicate the downlink BWP in which the PDSCH scheduled by this DCI format 1_1 is allocated. In other words, DCI format 1_1 may or may not involve changing the active downlink BWP. The terminal device 1 may recognize the downlink BWP in which the PDSCH is allocated based on detecting the DCI format 1_1 used for PDSCH scheduling.

A DCI format 1_1 that does not include the BWP field may be a DCI format that schedules the PDSCH without changing the active downlink BWP. The terminal device 1 receives the PDSCH without switching the active downlink BWP based on detecting the DCI format 1_1 that is used for PDSCH scheduling and does not include the BWP field. You may recognize that

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

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 arranged. Based on detecting DCI format 1_1 in a downlink component carrier of a certain serving cell, the terminal device 1 detects the downlink of the serving cell in which the PDSCH scheduled by the DCI format 1_1 is indicated by the carrier indicator field included in the DCI format 1_1. It may be recognized that it is located on a component carrier.

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 arranged is the same as the downlink component carrier on which the PDCCH including the DCI format 1_1 is arranged. may Based on detecting DCI format 1_1 in a certain downlink component carrier, the terminal device 1 may recognize that the PDSCH scheduled according to DCI format 1_1 should be mapped to that downlink component carrier.

The PDSCH may be transmitted to convey transport blocks. PDSCH may be used to convey transport blocks. A transport block may be placed on the PDSCH. The base station apparatus 3 may transmit PDSCH in which transport blocks are arranged. The terminal device 1 may receive PDSCH in which transport blocks are arranged.

A downlink physical signal may correspond to a set of resource elements. Downlink physical signals may not be used to convey information originating in higher layers. Note that the downlink physical signal may be used to convey information generated in the physical layer. A downlink physical signal may be a physical signal used in a downlink component carrier. The physical layer processing unit 10 may transmit a downlink physical signal. The physical layer processing unit 30 may receive downlink physical signals. In the downlink of the radio 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)
・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 by the terminal device 1 to synchronize one or both of the downlink frequency domain and time domain. A synchronization signal is a general term for PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal).

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

A PBCH to which a PBCH symbol in a certain antenna port is transmitted is a DMRS for the PBCH that is mapped to the slot to which the PBCH is mapped, and for the PBCH that is included in the SS/PBCH block that includes the PBCH. may be estimated by the DMRS of

　DL DMRS is a generic term for DMRS for PBCH, DMRS for PDSCH, and DMRS for PDCCH.

A set of antenna ports for 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 DMRS antenna ports for a PDSCH may be the same as the set of antenna ports for the PDSCH.

A PDSCH propagation path may be estimated from the DMRS for the PDSCH. If a set of resource elements in which a certain PDSCH symbol is transmitted and a set of resource elements in which a DMRS symbol for the certain PDSCH is transmitted are included in the same Precoding Resource Group (PRG) In that case, the PDSCH on which the PDSCH symbols on a given antenna port are conveyed may be estimated by the DMRS for that PDSCH.

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

A PDCCH channel may be estimated from the DMRS for the PDCCH. If the same precoder is applied (assumed to be applied, applicable), the PDCCH on which the symbols of that PDCCH at a certain antenna port are conveyed may be estimated by the DMRS for that PDCCH.

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

The transport layer BCH may be mapped to the physical layer PBCH. That is, a transport block delivered from a higher layer on the BCH of the transport layer may be placed on the PBCH of the physical layer. Also, the transport layer UL-SCH may be mapped to the physical layer PUSCH. That is, a transport block delivered from a higher layer on the UL-SCH of the transport layer may be placed on the PUSCH of the physical layer. Also, the transport layer DL-SCH may be mapped to the physical layer PDSCH. That is, a transport block delivered from a higher layer on the DL-SCH of the transport layer may be arranged on the PDSCH of the physical layer.

The transport layer may apply HARQ (Hybrid Automatic Repeat reQuest) to transport blocks.

BCCH (Broadcast Control CHannel), CCCH (Common Control CHannel), and DCCH (Dedicated Control CHannel) are logical channels. For example, BCCH may be used to deliver RRC messages containing MIBs or RRC messages containing system information. CCCH may also be used to transmit an RRC message including RRC parameters common to multiple terminal devices 1 . Here, CCCH may be used, for example, for terminal device 1 that is not RRC-connected. DCCH may also be used to transmit RRC messages dedicated to a terminal device 1 . Here, the DCCH may be used, for example, for the terminal device 1 that is RRC-connected.

RRC parameters common to a plurality of terminal devices 1 are also referred to as common RRC parameters. Here, common RRC parameters may be defined as parameters unique to the serving cell. Here, the parameters unique to the serving cell may be parameters common to terminal devices (for example, terminal devices 1-A, B, and C) in which the serving cell is configured.

For example, common RRC parameters may be included in RRC messages delivered on BCCH. For example, common RRC parameters may be included in RRC messages delivered on the DCCH.

Among certain RRC parameters, RRC parameters that are different from common RRC parameters are also called dedicated RRC parameters. Here, the dedicated RRC parameters can provide dedicated RRC parameters to the terminal device 1-A in which the serving cell is configured. In other words, the dedicated RRC parameters are RRC parameters that can provide unique settings for each of the terminal devices 1-A, B, and C.

BCCH may be mapped to BCH or DL-SCH. That is, RRC messages containing MIB information may be delivered to the BCH. Also, RRC messages containing system information other than the MIB may be delivered to the DL-SCH. CCCH is also mapped to DL-SCH or UL-SCH. That is, RRC messages mapped to CCCH may be delivered on DL-SCH or UL-SCH. Also, DCCH may be mapped to DL-SCH or UL-SCH. That is, RRC messages mapped to DCCH may be delivered on DL-SCH or UL-SCH.

FIG. 5 is a diagram showing an example of a procedure related to PUSCH transmission between 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. Also, the medium access control layer processing unit 35 and the medium access control layer processing unit 15 exchange MAC CE. Also, the physical layer processing unit 30 notifies the physical layer processing unit 10 of the DCI format.

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

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

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

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, 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 for the transmission instruction.

Next, the physical layer processing unit 10 transmits PUSCH based on the transmission instruction given by the medium access control layer processing unit 15. Here, the physical layer processing unit 10 may further refer to the RRC parameters provided by the radio resource control layer processing unit 16 for transmission of the PUSCH.

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 are determined by the radio resource control layer based on the RRC message transmitted from the radio resource control layer processing unit 36. It may be a parameter managed by the processing unit 16 .

Here, the radio resource control layer processing unit 36 may include an RRC parameter for determining the PUSCH transmission opportunity determination method in the RRC message and transmit it to the radio resource control layer processing unit 16 .

FIG. 6 is a diagram showing an example of PUSCH transmission according to one aspect of the present embodiment. Here, 6000 indicates a pattern. Pattern 6000 comprises regions 6001 , 6002 and 6003 . Also, 6010 is a pattern. Here, the configurations of patterns 6000 and 6010 are similar. In other words, the pattern 6010 includes regions 6011 , 6012 and 6013 . Region 6001 corresponds to region 6011 . Region 6002 corresponds to region 6012 . Region 6003 corresponds to region 6013 .

In FIG. 6, an area 6001 includes time areas of slot #n (slot#n), slot #n+1, and slot #n+2. Region 6001 also includes part of the time domain of slot #n+3. Region 6001 is also called a downlink region.

In FIG. 6, area 6002 includes part of the time domain of slot #n+3. Region 6002 is also called a flexible region.

In FIG. 6, area 6003 includes part of the time domain of slot #n+3. Region 6003 also includes the time region of slot #n+4. Region 6003 is also called an uplink region.

In FIG. 6, area 6011 includes the time areas of slot #n+5, slot #n+6, and slot #n+7. Region 6011 also includes part of the time domain of slot #n+8. Region 6011 is also called a downlink region.

In FIG. 6, area 6012 includes part of the time domain of slot #n+8. Region 6012 is also called a flexible region.

In FIG. 6, area 6013 includes part of the time domain of slot #n+8. Region 6013 also includes the time region of slot #n+9. Region 6013 is also called an uplink region.

For example, the configuration of the downlink region may be determined based on 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 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 common RRC parameters provided by the radio resource control layer processing unit 16 . That is, the pattern configuration may be determined based on common RRC parameters provided by the radio resource control layer processing unit 16 .

OFDM symbols included in the downlink region are also called downlink symbols. An OFDM symbol included in the flexible region is also called a flexible symbol. OFDM symbols included in the uplink region are also called uplink symbols.

A flexible area is an area that can be changed based on dedicated RRC parameters. For example, a dedicated RRC parameter can change part of the flexible region to a downlink region. Also, the dedicated RRC parameters can change part of the flexible region to an uplink region. That is, the flexible region in the pattern configuration determined based on the common RRC parameters may be determined based on the dedicated RRC parameters provided by the radio resource control layer processing unit 16 . Here, the common RRC parameter used for determining the pattern configuration is also called TDD-ul-dl-configurationCommon. In addition, the dedicated RRC parameter used for changing the flexible region in the pattern configuration determined based on the common RRC parameter is also called TDD-ul-dl-configurationDedicated.

The flexible area is an area that can be changed based on the information indicated by DCI format 2_0. For example, 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.

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

FIG. 6 shows an example of the physical slot count when the number of repetitions K is 4. Here, in the physical slot count, four slots from the leading slot (slot #n+3) to slot #n+6 of PUSCH are determined. One transmission opportunity is placed in each of the four determined slots. That is, transmission opportunity 6101 is placed in slot #n+3, transmission opportunity 6102 is placed in slot #n+4, transmission opportunity 6103 is placed in slot #n+5, and transmission opportunity 6104 is placed in slot #n+6.

In other words, in the physical slot count, the physical layer processing unit 10 may determine four consecutive slots from the leading slot of PUSCH.

Here, the leading slot of PUSCH may be determined based on information provided by the DCI format. For example, one row of one Time Domain Resource Assignment (TDRA) table may be determined by the value of the Time Domain Resource Assignment field included in the DCI format. Here, the leading slot of PUSCH may be determined based on parameter K2 associated with one determined row. Here, parameter K2 may be a parameter that provides a slot offset from the slot in which PDCCH 6100 is allocated to the first slot of PUSCH.

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

FIG. 7 is a diagram showing a configuration example of a TDRA table according to one aspect of the present embodiment. The TDRA table shown in FIG. 7 contains four rows, each row corresponding to one value. For example, if the value of the Time Domain Resource Allocation field is 0, the slot offset K2 is 3, the leading symbol index S is 0, the PUSCH length L is 14, and the number of repetitions K is 4; Thus, the base station apparatus 3 can control the PUSCH time domain resource by setting the value of the time domain resource allocation field to an appropriate value. Also, the terminal device 1 can determine the values of the parameters K2, SLIV, and the number of repetitions K based on the values of the time domain resource allocation field.

Here, SLIV is defined as a parameter for determining the leading symbol index S and the length L of PUSCH. The SLIV value may also be given by joint coding of S and L.

The leading symbol index S is a parameter that indicates the index of the OFDM symbol at which one PUSCH transmission opportunity starts. Also, the PUSCH length L is a parameter indicating the number of OFDM symbols in one PUSCH transmission opportunity.

Also, the repetition count K is a parameter used to determine the number of transmission opportunities determined for PUSCH transmission.

Thus, even if the TDRA table is a table used for determining part or all of the leading symbol index S of the PUSCH, the length L of the PUSCH, the parameter K2, and the repetition count K of the PUSCH, good.

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

The Available Slot Count is an RRC parameter that indicates the number of slots available for PUSCH, TDD-ul-dl-configuration Common, TDD-ul-dl-configuration Dedicated, configuration for transmission of SS/PBCH blocks, and , may be determined based on part or all of the time domain resource allocation field used for scheduling the PUSCH.

For example, in the available slot count, the first K slots may be determined among the slots available after the first slot of PUSCH. In FIG. 8, first, the availability of slots after the first slot (slot #n+3) of PUSCH is checked, and the available slots determined based on the check correspond to the first K slots. Determine slot #n+3, n+4, n+8, n+9. One transmission opportunity is placed in each of the four determined available slots. That is, transmission opportunity 8101 is placed in slot #n+3, transmission opportunity 8102 is placed in slot #n+4, transmission opportunity 8103 is placed in slot #n+8, and transmission opportunity 8104 is placed in slot #n+9.

In this way, the physical slot count (first slot count) may be a method in which K slots are determined by counting the slots after the first slot of PUSCH. That is, the physical slot count (first slot count) may be the method by which the K slots are determined by counting the slots without checking availability for each slot. Or the physical available slot count does not refer to the RRC parameter indicating the configuration for the transmission of the K slots TDD-ul-dl-configurationCommon, TDD-ul-dl-configurationDedicated, and SS/PBCH blocks. It may be a method that is determined by Also in the physical slot count, the time domain resource allocation field used for PUSCH scheduling may be used to determine K slots. In addition, the available slot count (second slot count) is a method in which available slots are counted among the slots after the first slot of PUSCH, and K available slots are determined. may That is, the available slot count may be such that for each slot the slots are counted based on an availability check to determine the K available slots. Determination of available slots (examination of availability of slots) will be described later.

In another example, the available slot count may be determined by counting available slots in the slots after the leading slot of PUSCH. That is, the Available Slot Count is such that the slots are counted based on the availability check for each slot after the first slot of the PUSCH to determine the K−1 available slots. There may be. Here, the first slot of the PUSCH may be determined to be an available slot without based on slot availability checking. As a result, the available slot count is K, the sum of 1 available slot and K minus 1 available slots based on the availability check for each slot after the first slot of the PUSCH. available slots may be determined.

Here, in checking availability of slots, checking availability of a set of OFDM symbols may be performed. Here, the set of OFDM symbols may be determined based on the leading 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 OFDM symbol with index S to OFDM symbol with index S+L−1.

In checking slot availability, it may be determined that slots are available slots such that one or both of item 1 and item 2 below are satisfied for a set of OFDM symbols.
Item 1: None of the OFDM symbols included in the set of OFDM symbols are downlink symbols determined by the RRC parameters. Item 2: None of the OFDM symbols included in the set of OFDM symbols are included in the SS/PBCH block transmission. is not an OFDM symbol set for

That is, the availability of slots depends on whether the set of OFDM symbols includes downlink symbols determined by the RRC parameters, and whether the set of OFDM symbols contains the OFDM symbols set for the transmission of the SS/PBCH block. may be determined based on one or both of whether to include Note that the check based on item 2 may be performed on flexible symbols determined by the RRC parameters.

The availability of slots may not be affected by flexible region changes due to DCI format 2_0. For example, even if some of the set of OFDM symbols are flexible symbols and the flexible symbols are changed to downlink symbols according to the information provided by DCI format 2_0, slot availability check is still performed in the OFDM symbol set. It may be implemented under the assumption that some of the set of symbols are flexible symbols.

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

The physical layer processing unit 10 may provide the repetition count K or the determined number of transmission opportunities to the medium access control layer processing unit 15 . Also, the physical layer processing unit 10 may provide HARQ information related to PUSCH transmission to the medium access control layer processing unit 15 .

The medium access control layer processing unit may call the HARQ process a maximum of K times based on the uplink grant corresponding to DCI format 6100. Here, each time the HARQ process is invoked, the HARQ process may instruct the physical layer processing unit 10 to transmit PUSCH.

The physical layer processing unit 10 may perform PUSCH transmission according to a PUSCH transmission instruction from the HARQ process. Transmission of PUSCH may be omitted (cancelled or dropped). For example, PUSCH transmission may be omitted when any of items 3 to 6 are satisfied for a set of OFDM symbols.
Item 3: At least one of the OFDM symbols included in the set of OFDM symbols is a downlink symbol Item 4: At least one of the OFDM symbols included in the set of OFDM symbols is configured for transmission of the SS/PBCH block Item 5: At least part of the PUSCH transmission collides with a higher priority PUSCH than the PUSCH Item 6: At least part of the PUSCH transmission collides with the PRACH

A change in the flexible region based on DCI format 2_0 may be considered in determining whether or not to omit transmission of PUSCH. For example, if a part of the set of OFDM symbols are flexible symbols, and the flexible symbols are changed to downlink symbols according to the information provided by DCI format 2_0, it is possible to omit the transmission of PUSCH. , may be implemented under the assumption that some of the set of OFDM symbols are downlink symbols.

　Hereinafter, an application example of the physical slot count and the available slot count is shown.

For example, the radio resource control unit 16 may provide an RRC parameter indicating whether or not the available slot count is enabled. Here, the RRC parameter indicating whether the available slot counting is enabled is also called AvailableSlotCounting.

For example, when the value of AvailableSlotCounting is set to indicate availability and a PUSCH is scheduled by DCI format 0_0 with a CRC sequence scrambled by C-RNTI, the physical layer processing unit 10 performs physical processing for the PUSCH. A slot count may also be used. For example, if the value of AvailableSlotCounting is not set to indicate availability and the PUSCH is scheduled with DCI format 0_0 with a CRC sequence scrambled by C-RNTI, the physical layer processing unit 10 is for the PUSCH A physical slot count may be used.

For example, the fact that the value of AvailableSlotCounting is not set to indicate activation may mean that AvailableSlotCounting is not provided by the physical resource control layer processing unit 16 . For example, when the value of AvailableSlotCounting is not set to indicate activation, it means that although AvailableSlotCounting is provided by the physical resource control layer processing unit 16, the value of AvailableSlotCounting is set to indicate activation. good too.

For example, when the value of AvailableSlotCounting is set to indicate availability and a PUSCH is scheduled with DCI format 0_1 with a CRC sequence scrambled by C-RNTI, the physical layer processing unit 10 uses for the PUSCH. A possible slot count may also be used. For example, if the value of AvailableSlotCounting is not set to indicate availability and a PUSCH is scheduled with DCI format 0_1 with a CRC sequence scrambled by C-RNTI, the physical layer processing unit 10 is for the PUSCH A physical slot count may be used.

For example, when a PUSCH is scheduled by a random access response grant, the physical layer processing unit 10 counts available slots for the PUSCH regardless of whether the value of AvailableSlotCounting is set to indicate availability. may be used.

For example, when the value of AvailableSlotCounting is set to indicate availability and a PUSCH is scheduled by a random access response grant, the physical layer processing unit 10 may use the available slot count for that PUSCH. For example, if the value of AvailableSlotCounting is not set to indicate availability and a PUSCH is scheduled with a random access response grant, the physical layer processing unit 10 may use the available slot count for that PUSCH.

For example, in the random access procedure, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 determines that the value of AvailableSlotCounting is A physical slot count may be used for the PUSCH scheduled by the random access response grant included in the random access response, whether or not it is set to indicate activation. For example, in the random access procedure, when a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource is detected, the physical layer processing unit 10 determines that the value of AvailableSlotCounting is The available slot count may be used for PUSCHs scheduled by the random access response grant included in the random access response, whether or not it is set to indicate activation. Here, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 detects the random access response included in the random access response. The first interpretation may be used for interpretation of the value of the MCS field included in the access response grant. Further, when a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource is detected, the physical layer processing unit 10 detects the random access A second interpretation may be used for interpreting the value of the MCS field included in the response grant.

For example, in the random access procedure, when the physical layer processing unit 10 transmits one random access preamble selected from the first random access resource, the physical layer processing unit 10 sets the value of AvailableSlotCounting to indicate activation. Whether set or not, the physical slot count may be used for the PUSCH scheduled by the random access response grant included in the random access response containing the index of the random access preamble. For example, in the random access procedure, when the physical layer processing unit 10 transmits one random access preamble selected from the second random access resource, the physical layer processing unit 10 sets the value of AvailableSlotCounting to indicate activation. Whether set or not, the Available Slot Count may be used for the PUSCH scheduled by the random access response grant included in the random access response containing the index of the random access preamble. Here, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 detects the random access response included in the random access response. The first interpretation may be used for interpretation of the value of the MCS field included in the access response grant. Further, when a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource is detected, the physical layer processing unit 10 detects the random access A second interpretation may be used for interpreting the value of the MCS field included in the response grant.

For example, in the random access procedure, based on the detection of a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource, the physical layer processing unit 10, AvailableSlotCounting A physical slot count may be used for the PUSCH scheduled by the random access response grant included in the random access response, whether or not the value is set to indicate activation. For example, in the random access procedure, based on the detection of a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource, the physical layer processing unit 10, AvailableSlotCounting The available slot count may be used for PUSCHs scheduled by the random access response grant included in the random access response, whether or not the value is set to indicate activation. Here, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 detects the random access response included in the random access response. The first interpretation may be used for interpretation of the value of the MCS field included in the access response grant. Further, when a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource is detected, the physical layer processing unit 10 detects the random access A second interpretation may be used for interpreting the value of the MCS field included in the response grant.

For example, in the random access procedure, based on the physical layer processing unit 10 transmitting one random access preamble selected from the first random access resource, the physical layer processing unit 10 determines that the value of AvailableSlotCounting indicates activation. A physical slot count may be used for the PUSCH scheduled by the random access response grant contained in the random access response containing the index of the random access preamble, regardless of whether it is set to . For example, in the random access procedure, based on the physical layer processing unit 10 transmitting one random access preamble selected from the second random access resource, the physical layer processing unit 10 determines that the value of AvailableSlotCounting indicates activation. The available slot count may be used for PUSCH scheduled by the random access response grant included in the random access response containing the index of the random access preamble, regardless of whether it is set to . Here, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 detects the random access response included in the random access response. The first interpretation may be used for interpretation of the value of the MCS field included in the access response grant. Further, when a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource is detected, the physical layer processing unit 10 detects the random access A second interpretation may be used for interpreting the value of the MCS field included in the response grant.

For example, in the random access procedure, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 determines that the value of AvailableSlotCounting is A physical slot count may be used for the PUSCH scheduled by the random access response grant included in the random access response, whether or not it is set to indicate activation. For example, in the random access procedure, when a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource is detected, the physical layer processing unit 10 determines that the value of AvailableSlotCounting is The value of the bit field included in the random access response grant included in the random access response, regardless of whether it is set to indicate enablement, to the value of the MCS field included in the random access response grant. A physical slot count may be used for the PUSCH scheduled by the random access response grant if set to indicate that the first interpretation should be applied. For example, in the random access procedure, when a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource is detected, the physical layer processing unit 10 determines that the value of AvailableSlotCounting is The value of the bit field included in the random access response grant included in the random access response, regardless of whether it is set to indicate enablement, to the value of the MCS field included in the random access response grant. The available slot count may be used for the PUSCH scheduled by the random access response grant if set to indicate that the second interpretation should be applied. Here, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 detects the random access response included in the random access response. The first interpretation may be used for interpretation of the value of the MCS field included in the access response grant.

For example, in the random access procedure, when the physical layer processing unit 10 transmits one random access preamble selected from the first random access resource in the random access procedure, the physical layer processing unit 10 determines that the value of AvailableSlotCounting is valid. A physical slot count may be used for the PUSCH scheduled by the random access response grant contained in the random access response containing the index of the random access preamble, regardless of whether it is set to indicate the random access preamble. For example, in the random access procedure, when the physical layer processing unit 10 transmits one random access preamble selected from the second random access resource, the physical layer processing unit 10 sets the value of AvailableSlotCounting to indicate activation. Whether set or not, the value of the bit field included in the random access response grant included in the random access response including the index of the random access preamble is relative to the value of the MCS field included in the random access response grant. A physical slot count may be used for the PUSCH scheduled by the random access response grant if set to indicate that the first interpretation should be applied to the random access response grant. For example, in the random access procedure, when the physical layer processing unit 10 transmits one random access preamble selected from the second random access resource, the physical layer processing unit 10 sets the value of AvailableSlotCounting to indicate activation. Whether set or not, the value of the bit field included in the random access response grant included in the random access response including the index of the random access preamble is relative to the value of the MCS field included in the random access response grant. The available slot count may be used for the PUSCH scheduled by the random access response grant if set to indicate that the second interpretation should be applied. Here, when the physical layer processing unit 10 transmits one random access preamble selected from the first random access resource, the physical layer processing unit 10 is included in the random access response grant included in the random access response. A first interpretation may be used for interpretation of the value of the MCS field.

For example, in the random access procedure, based on the detection of a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource, the physical layer processing unit 10, AvailableSlotCounting A physical slot count may be used for the PUSCH scheduled by the random access response grant included in the random access response, whether or not the value is set to indicate activation. For example, in the random access procedure, based on the detection of a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource, the physical layer processing unit 10, AvailableSlotCounting The value of the bit field included in the random access response grant included in the random access response corresponds to the value of the MCS field included in the random access response grant, regardless of whether the value is set to indicate activation. A physical slot count may be used for the PUSCH scheduled by the random access response grant if set to indicate that the first interpretation should be applied to the random access response grant. For example, in the random access procedure, based on the detection of a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource, the physical layer processing unit 10, AvailableSlotCounting The value of the bit field included in the random access response grant included in the random access response corresponds to the value of the MCS field included in the random access response grant, regardless of whether the value is set to indicate activation. The available slot count may be used for the PUSCH scheduled by the random access response grant if set to indicate that the second interpretation should be applied to the random access response grant. Here, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 detects the random access response included in the random access response. The first interpretation may be used for interpretation of the value of the MCS field included in the access response grant.

For example, in the random access procedure, based on the physical layer processing unit 10 transmitting one random access preamble selected from the first random access resource, the physical layer processing unit 10 determines that the value of AvailableSlotCounting indicates activation. A physical slot count may be used for the PUSCH scheduled by the random access response grant contained in the random access response containing the index of the random access preamble, regardless of whether it is set to . For example, in the random access procedure, based on the physical layer processing unit 10 transmitting one random access preamble selected from the second random access resource, the physical layer processing unit 10 determines that the value of AvailableSlotCounting indicates activation. The value of the bit field included in the random access response grant included in the random access response containing the index of the random access preamble is the value of the MCS field included in the random access response grant, regardless of whether it is set to A physical slot count may be used for the PUSCH scheduled by the random access response grant if set to indicate that the first interpretation should be applied to the random access response grant. For example, in the random access procedure, based on the physical layer processing unit 10 transmitting one random access preamble selected from the second random access resource, the physical layer processing unit 10 determines that the value of AvailableSlotCounting indicates activation. The value of the bit field included in the random access response grant included in the random access response containing the index of the random access preamble is the value of the MCS field included in the random access response grant, regardless of whether it is set to The available slot count may be used for the PUSCH scheduled by the random access response grant if set to indicate that the second interpretation should be applied to the random access response grant. Here, when the physical layer processing unit 10 transmits one random access preamble selected from the first random access resource, the physical layer processing unit 10 is included in the random access response grant included in the random access response. A first interpretation may be used for interpretation of the value of the MCS field.

Here, the first random access resource may be a set including one or more first random access preambles. One or more first random access preambles included in the first random access resource may correspond to a configuration of the first time-frequency resource. Also, the second random access resource may be a set including one or more second random access preambles. Here, the one or more first random access preambles and the one or more second random access preambles may be different. One or more second random access preambles included in the second random access resources may correspond to the configuration of the second time-frequency resources. Here, the setting of the first time-frequency resource and the setting of the second time-frequency resource may be different or the same.

The MAC layer processing unit 15 compares reception quality information (for example, RSRP) determined based on the received physical signal of the downlink with a set threshold, the first random access in the random access procedure Either one of the resource and the second random access resource may be selected. For example, the MAC layer processing unit 15 may select the first random access resource in the random access procedure when the reception quality information exceeds the set threshold. Also, when the reception quality information is below the set threshold, the MAC layer processing unit 15 may select the second random access resource in the random access procedure. For example, the MAC layer processing unit 15 may select the first random access resource or the second random access resource in the random access procedure when the reception quality information is equal to the set threshold. Here, the RRC parameter indicating the set threshold may be provided by the physical resource control layer processing unit 16 .

For example, when the value of the bit field included in the random access response grant is set to indicate applying the first interpretation to the value of the MCS field included in the random access response grant, the physical Layer processing unit 10 may determine the value of MCS using the 4 bits associated with the MCS field. For example, if the value of the bit field included in the random access response grant is set to indicate that the second interpretation should be applied to the value of the MCS field included in the random access response grant, the physical Layer processing unit 10 may determine the value of MCS using M bits of the 4 bits associated with the MCS field. Here, the RRC parameter indicating the set of MCS candidate values indicated by the M-bit value may be provided by the radio resource control layer processing unit 16 . If the radio resource control layer processing unit 16 does not provide a set of MCS candidate values, the M-bit value may be used to determine the MCS value.

For example, when M=2, the radio resource control layer processing unit 16 may provide an RRC parameter indicating a set including four or less MCS candidate values. When M=2, if the radio resource control layer processing unit 16 does not provide an RRC parameter indicating a set including four or less MCS candidate values, the physical layer processing unit 10 converts the M-bit codepoint to the MCS value may be associated with

For example, in the random access procedure, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 determines that the value of AvailableSlotCounting is Physical slot count may be used for PUSCH scheduled by DCI format 0_0 with CRC sequence scrambled by TC-RNTI, regardless of whether it is set to indicate enablement. For example, in the random access procedure, when a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource is detected, the physical layer processing unit 10 determines that the value of AvailableSlotCounting is The Available Slot Count may be used for PUSCH scheduled by DCI format 0_0 with a CRC sequence scrambled by TC-RNTI, regardless of whether it is set to indicate enablement. Here, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 uses the TC-RNTI scrambled CRC A first interpretation may be used for the interpretation of the value of the MCS field contained in DCI format 0_0 with sequence. Further, when a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource is detected, the physical layer processing unit 10 scrambles the CRC sequence by TC-RNTI. A second interpretation may be used for the interpretation of the value of the MCS field contained in DCI format 0_0 with .

For example, in the random access procedure, when the physical layer processing unit 10 transmits one random access preamble selected from the first random access resource, the physical layer processing unit 10 sets the value of AvailableSlotCounting to indicate activation. Physical slot count may be used for PUSCH scheduled by DCI format 0_0 with CRC sequence scrambled by TC-RNTI, whether set or not. For example, in the random access procedure, when the physical layer processing unit 10 transmits one random access preamble selected from the second random access resource, the physical layer processing unit 10 sets the value of AvailableSlotCounting to indicate activation. Whether set or not, the Available Slot Count may be used for PUSCH scheduled with DCI format 0_0 with a CRC sequence scrambled by TC-RNTI. Here, when the physical layer processing unit 10 transmits one random access preamble selected from the first random access resource, the physical layer processing unit 10 uses DCI format 0_0 with a CRC sequence scrambled by TC-RNTI. The first interpretation may be used for the interpretation of the value of the MCS field contained in the . Also, when the physical layer processing unit 10 transmits one random access preamble selected from the second random access resource, the physical layer processing unit 10 converts to DCI format 0_0 with a CRC sequence scrambled by TC-RNTI. A second interpretation may be used for interpreting the value of the included MCS field.

For example, in the random access procedure, based on the detection of a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource, the physical layer processing unit 10, AvailableSlotCounting The physical slot count may be used for PUSCH scheduled by DCI format 0_0 with a CRC sequence scrambled by TC-RNTI whether or not the value is set to indicate activation. For example, in the random access procedure, based on the detection of a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource, the physical layer processing unit 10, AvailableSlotCounting The Available Slot Count may be used for PUSCH scheduled by DCI format 0_0 with a CRC sequence scrambled by TC-RNTI whether or not the value is set to indicate availability. Here, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 uses the TC-RNTI scrambled CRC A first interpretation may be used for the interpretation of the value of the MCS field contained in DCI format 0_0 with sequence. Further, when a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource is detected, the physical layer processing unit 10 scrambles the CRC sequence by TC-RNTI. A second interpretation may be used for the interpretation of the value of the MCS field contained in DCI format 0_0 with .

For example, in the random access procedure, based on the physical layer processing unit 10 transmitting one random access preamble selected from the first random access resource, the physical layer processing unit 10 determines that the value of AvailableSlotCounting indicates activation. The physical slot count may be used for PUSCH scheduled by DCI format 0_0 with a CRC sequence scrambled by TC-RNTI, regardless of whether it is set to . For example, in the random access procedure, based on the physical layer processing unit 10 transmitting one random access preamble selected from the second random access resource, the physical layer processing unit 10 determines that the value of AvailableSlotCounting indicates activation. The available slot count may be used for PUSCH scheduled with DCI format 0_0 with a CRC sequence scrambled by TC-RNTI, regardless of whether it is set to . Here, when the physical layer processing unit 10 transmits one random access preamble selected from the first random access resource, the physical layer processing unit 10 uses DCI format 0_0 with a CRC sequence scrambled by TC-RNTI. The first interpretation may be used for the interpretation of the value of the MCS field contained in the . Also, when the physical layer processing unit 10 transmits one random access preamble selected from the second random access resource, the physical layer processing unit 10 converts to DCI format 0_0 with a CRC sequence scrambled by TC-RNTI. A second interpretation may be used for interpreting the value of the included MCS field.

For example, in the random access procedure, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 determines that the value of AvailableSlotCounting is Physical slot count may be used for PUSCH scheduled by DCI format 0_0 with CRC sequence scrambled by TC-RNTI, regardless of whether it is set to indicate enablement. For example, in the random access procedure, when a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource is detected, the physical layer processing unit 10 determines that the value of AvailableSlotCounting is The value of the bit field contained in DCI format 0_0 with a CRC sequence scrambled by TC-RNTI is the value of the MCS field contained in DCI format 0_0, regardless of whether it is set to indicate validity. The physical slot count may be used for PUSCH scheduled by the DCI format 0_0 if set to indicate that the first interpretation should be applied to the DCI format 0_0. For example, in the random access procedure, when a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource is detected, the physical layer processing unit 10 determines that the value of AvailableSlotCounting is The value of the bit field contained in DCI format 0_0 with a CRC sequence scrambled by TC-RNTI is the value of the MCS field contained in DCI format 0_0, regardless of whether it is set to indicate validity. The available slot count may be used for PUSCHs scheduled by the DCI format 0_0 if set to indicate that the second interpretation should be applied to the DCI format 0_0. Here, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 uses the TC-RNTI scrambled CRC A first interpretation may be used for the interpretation of the value of the MCS field contained in DCI format 0_0 with sequence.

For example, in the random access procedure, when the physical layer processing unit 10 transmits one random access preamble selected from the first random access resource, the physical layer processing unit 10 sets the value of AvailableSlotCounting to indicate activation. Physical slot count may be used for PUSCH scheduled by DCI format 0_0 with CRC sequence scrambled by TC-RNTI, whether set or not. For example, in the random access procedure, when the physical layer processing unit 10 transmits one random access preamble selected from the second random access resource, the physical layer processing unit 10 sets the value of AvailableSlotCounting to indicate activation. Whether set or not, the value of the bit field included in DCI format 0_0 with a CRC sequence scrambled by TC-RNTI is the first interpretation for the value of the MCS field included in DCI format 0_0. Physical slot count may be used for PUSCHs scheduled by the DCI format 0_0 if set to indicate that . For example, in the random access procedure, when the physical layer processing unit 10 transmits one random access preamble selected from the second random access resource, the physical layer processing unit 10 sets the value of AvailableSlotCounting to indicate activation. Whether set or not, the value of the bit field included in DCI format 0_0 with a CRC sequence scrambled by TC-RNTI is the second interpretation for the value of the MCS field included in DCI format 0_0. The available slot count may be used for PUSCHs scheduled by the DCI format 0_0 if set to indicate that . Here, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 uses the TC-RNTI scrambled CRC A first interpretation may be used for the interpretation of the value of the MCS field contained in DCI format 0_0 with sequence.

For example, in the random access procedure, based on the detection of a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource, the physical layer processing unit 10, AvailableSlotCounting The physical slot count may be used for PUSCH scheduled by DCI format 0_0 with a CRC sequence scrambled by TC-RNTI whether or not the value is set to indicate activation. For example, in the random access procedure, based on the detection of a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource, the physical layer processing unit 10, AvailableSlotCounting The value of the bit field included in DCI format 0_0 with a CRC sequence scrambled by TC-RNTI is the value of the MCS field included in DCI format 0_0, regardless of whether the value is set to indicate validity. A physical slot count may be used for PUSCHs scheduled by the DCI format 0_0 if set to indicate that the first interpretation should be applied to the value. For example, in the random access procedure, based on the detection of a random access response including an identifier corresponding to the index of one random access preamble selected from the second random access resource, the physical layer processing unit 10, AvailableSlotCounting The value of the bit field included in DCI format 0_0 with a CRC sequence scrambled by TC-RNTI is the value of the MCS field included in DCI format 0_0, regardless of whether the value is set to indicate validity. The Available Slot Count may be used for PUSCHs scheduled by the DCI format 0_0 if set to indicate that the second interpretation should be applied to the value. Here, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 uses the TC-RNTI scrambled CRC A first interpretation may be used for the interpretation of the value of the MCS field contained in DCI format 0_0 with sequence.

For example, in the random access procedure, based on the physical layer processing unit 10 transmitting one random access preamble selected from the first random access resource, the physical layer processing unit 10 determines that the value of AvailableSlotCounting is valid. Physical slot count may be used for PUSCH scheduled by DCI format 0_0 with CRC sequence scrambled by TC-RNTI, whether or not it is set as indicated. For example, in the random access procedure, based on the physical layer processing unit 10 transmitting one random access preamble selected from the second random access resource, the physical layer processing unit 10 determines that the value of AvailableSlotCounting is valid. Whether or not set as indicated, the value of the bit field included in DCI format 0_0 with a CRC sequence scrambled by TC-RNTI is the first relative to the value of the MCS field included in DCI format 0_0. If set to indicate that an interpretation of 1 is applied, the physical slot count may be used for PUSCHs scheduled by the DCI format 0_0. For example, in the random access procedure, based on the physical layer processing unit 10 transmitting one random access preamble selected from the second random access resource, the physical layer processing unit 10 determines that the value of AvailableSlotCounting is valid. Whether or not set as indicated, the value of the bit field included in DCI format 0_0 with a CRC sequence scrambled by TC-RNTI is the first relative to the value of the MCS field included in DCI format 0_0. The Available Slot Count may be used for PUSCHs scheduled by the DCI format 0_0 if set to indicate that interpretation of 2 is applied. Here, when a random access response including an identifier corresponding to the index of one random access preamble selected from the first random access resource is detected, the physical layer processing unit 10 uses the TC-RNTI scrambled CRC A first interpretation may be used for the interpretation of the value of the MCS field contained in DCI format 0_0 with sequence.

The physical layer processing unit 10 may determine whether or not to monitor downlink physical signals based on PUSCH scheduled by a random access response grant. For example, when the PUSCH scheduled by the random access response grant and the downlink physical signal to be monitored overlap in the time domain, the physical layer processing is performed based on the available slot count for the PUSCH. The unit 10 may drop the monitoring of the downlink physical signal. On the other hand, when the PUSCH scheduled by the random access response grant and the downlink physical signal to be monitored overlap in the time domain, when the physical slot count is used for the PUSCH, the physical layer The processing unit 10 may not drop the monitoring of the downlink physical signal.

For example, in the random access procedure, the PUSCH scheduled by the random access response grant and the downlink physical signal to be monitored overlap in the time domain, and one random selected from the second random access resource Based on detection of a random access response including an identifier corresponding to the index of the access preamble, the physical layer processing unit 10 may drop monitoring of the downlink physical signal. On the other hand, in the random access procedure, the PUSCH scheduled by the random access response grant and the downlink physical signal to be monitored overlap in the time domain, and the PUSCH is selected from the first random access resource. When a random access response including an identifier corresponding to one random access preamble index is detected, the physical layer processing unit 10 may not drop monitoring of the downlink physical signal.

For example, in the random access procedure, the PUSCH scheduled by the random access response grant and the downlink physical signal to be monitored overlap in the time domain, and one random selected from the second random access resource Based on the physical layer processing unit 10 transmitting the access preamble, the physical layer processing unit 10 may drop the monitoring of the downlink physical signal. On the other hand, in the random access procedure, the PUSCH scheduled by the random access response grant and the downlink physical signal to be monitored overlap in the time domain, and the PUSCH is selected from the second random access resource 1 When the physical layer processing unit 10 transmits one random access preamble, the physical layer processing unit 10 does not have to drop the monitoring of the downlink physical signal.

For example, in the random access procedure, the PUSCH scheduled by the random access response grant and the downlink physical signal to be monitored overlap in the time domain, and the value of the MCS field included in the random access response grant On the basis that the second interpretation is used, the physical layer processing unit 10 may drop the monitoring of the downlink physical signal. On the other hand, in the random access procedure, the PUSCH scheduled by the random access response grant and the downlink physical signal to be monitored overlap in the time domain, and the MCS field included in the random access response grant If the first interpretation is used for the value, the physical layer processing unit 10 may not drop the monitoring of the downlink physical signal.

For example, when a PUSCH scheduled by DCI format 0_0 with a CRC sequence scrambled by TC-RNTI and a downlink physical signal to be monitored overlap in the time domain, the available slot count for the PUSCH is used, the physical layer processing unit 10 may drop the monitoring of the downlink physical signal.

Aspects of various devices according to one aspect of the present embodiment will be described below.

(1) In order to achieve the above objects, the aspects of the present invention take the following measures. That is, a first aspect of the present invention is a terminal device, managing a first random access resource set and a second random access resource set, and in a random access procedure, the first random access resource set and a MAC layer processing unit that selects one random access resource set from the second random access resource set; and a PRACH transmitted in random access resources selected from the one random access resource set, and associated with the PRACH. a physical layer processing unit that receives a random access response grant associated with a random access preamble index and transmits a PUSCH scheduled according to the received random access response grant, wherein the physical layer processing unit is configured to: From the random access resource set and the second random access resource set, based on the fact that the first random access resource set is selected as the one random access resource set, the downlink overlapping with the PUSCH Stop monitoring.

(2) A second aspect of the present invention is a base station apparatus that manages a first random access resource set and a second random access resource set, and in a random access procedure, the first random a MAC layer processing unit that selects one random access resource set from an access resource set and the second random access resource set; receives a PRACH in a random access resource selected from the one random access resource set; a physical layer processing unit that receives a random access response grant associated with a random access preamble index associated with the PRACH and receives a PUSCH scheduled according to the transmitted random access response grant, wherein the physical layer processing unit is , based on that the first random access resource set is selected as the one random access resource set from the first random access resource set and the second random access resource set, overlapping with the PUSCH downlink signal transmission.

(3) A third aspect of the present invention is a communication method used in a terminal device, managing a first random access resource set and a second random access resource set, and in a random access procedure, selecting a random access resource set from a first random access resource set and said second random access resource set; transmitting a PRACH on a random access resource selected from said one random access resource set; receiving a random access response grant associated with a random access preamble index associated with the PRACH and transmitting a PUSCH scheduled according to the received random access response grant; Stopping downlink monitoring that overlaps with the PUSCH based on the fact that the first random access resource set is selected as the one random access resource set from two random access resource sets. Prepare.

A program that operates on the base station device 3 and the terminal device 1 according to one aspect of the present invention controls a CPU (Central Processing Unit) and the like so as to realize the functions of the above-described embodiments related to one aspect of the present invention. It may be a program (a program that causes a computer to function). The information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing, and then stored in various ROMs such as Flash ROM (Read Only Memory) and HDD (Hard Disk Drive). It is read, modified, and written by the CPU as necessary.

It should be noted that the terminal device 1 and part of the base station device 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 in a computer-readable recording medium, and the program recorded in this recording medium may be read into a computer system and executed.

The "computer system" here is a computer system built into the terminal device 1 or the base station device 3, and includes hardware such as an OS and peripheral devices. The term "computer-readable recording medium" refers to portable media such as flexible discs, magneto-optical discs, ROMs and CD-ROMs, and storage devices such as hard discs built into computer systems.

Furthermore, "computer-readable recording medium" means a medium that dynamically stores a program for a short period of time, such as a communication line for transmitting a program via a network such as the Internet or a communication line such as a telephone line. In that case, it may also include a memory that holds the program for a certain period of time, such as a volatile memory inside a computer system that serves as a server or client. Further, the program may be for realizing part of the functions described above, or may be capable of realizing the functions described above in combination with a program already recorded in the computer system.

Also, the base station device 3 in the above-described embodiment can be realized as an aggregate (device group) composed of a plurality of devices. Each of the devices constituting the device group may include a part or all of each function or each functional block of the base station device 3 related to the above-described embodiments. A device group may have a series of functions or functional blocks of the base station device 3 . Also, the terminal device 1 according to the above-described embodiments can communicate with a base station device as a group.

Also, the base station device 3 in the above-described embodiment may be EUTRAN (Evolved Universal Terrestrial Radio Access Network) and/or NG-RAN (NextGen RAN, NR RAN). Also, the base station apparatus 3 in the above-described embodiment may have some or all of the functions of an upper node for eNodeB and/or gNB.

Also, part or all of the terminal device 1 and the base station device 3 in the above-described embodiments may be typically implemented as an LSI, which is an integrated circuit, or may be implemented as a chipset. Each functional block of the terminal device 1 and the base station device 3 may be individually chipped, or part or all of them may be integrated and chipped. Also, the method of circuit integration is not limited to LSI, but may be realized by a dedicated circuit or a general-purpose processor. In addition, when a technology for integrating circuits that replaces LSIs emerges due to advances in semiconductor technology, it is also possible to use integrated circuits based on this technology.

In addition, in the above-described embodiments, a terminal device was described as an example of a communication device, but the present invention is not limited to this. For example, it can be applied to terminal devices or communication devices such as AV equipment, kitchen equipment, cleaning/washing equipment, air conditioning equipment, office equipment, vending machines, and other household equipment.

Although the embodiment of this invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes etc. within the scope of the gist of this invention are also included. Further, one aspect of the present invention can be modified in various ways within the scope of the claims, and an embodiment obtained by appropriately combining technical means disclosed in different embodiments can also be Included in scope. Moreover, it is an element described in each said embodiment, and the structure which replaced the element with which the same effect is produced is also included.

One aspect of the present invention is, for example, a communication system, a communication device (e.g., a mobile phone device, a base station device, a wireless LAN device, or a sensor device), an integrated circuit (e.g., a communication chip), or a program, etc. be able to.

1 (1A, 1B, 1C) terminal device 3 base station device 9 wireless communication system 10, 30 physical layer processing units 10a, 30a wireless transmission units 10b, 30b wireless reception units 11, 31 antenna units 12, 32 RF units 13, 33 Baseband units 14, 34 Upper layer processing units 15, 35 Medium access control layer processing units 16, 36 Radio resource control layer processing units 6000, 6010 Patterns 6001, 6002, 6003, 6011, 6012, 6013 Area 6100 PDCCH
6101, 6102, 6103, 6104, 8101, 8102, 8103, 8104 transmission opportunity

Claims (3)

1. managing a first set of random access resources and a second set of random access resources;
   a MAC layer processing unit that selects one random access resource set from the first random access resource set and the second random access resource set in a random access procedure;
   transmitting a PRACH on a random access resource selected from the one random access resource set;
   receive a random access response grant associated with a random access preamble index associated with the PRACH;
   a physical layer processing unit that transmits a PUSCH scheduled according to the received random access response grant;
   The physical layer processing unit selects the first random access resource set as the one random access resource set from the first random access resource set and the second random access resource set. , a terminal device that stops monitoring downlinks that overlap with the PUSCH.
2. managing a first set of random access resources and a second set of random access resources;
   a MAC layer processing unit that selects one random access resource set from the first random access resource set and the second random access resource set in a random access procedure;
   receiving a PRACH on a random access resource selected from the one random access resource set;
   send a random access response grant associated with a random access preamble index associated with the PRACH;
   a physical layer processing unit that receives a PUSCH scheduled by the transmitted random access response grant;
   The physical layer processing unit selects the first random access resource set as the one random access resource set from the first random access resource set and the second random access resource set. , a base station apparatus that stops transmission of downlink signals that overlap with the PUSCH.
3. A communication method used in a terminal device,
   managing a first set of random access resources and a second set of random access resources;
   selecting one random access resource set from said first random access resource set and said second random access resource set in a random access procedure;
   transmitting a PRACH on a random access resource selected from the one random access resource set;
   receive a random access response grant associated with a random access preamble index associated with the PRACH;
   transmitting a PUSCH scheduled according to the received random access response grant;
   The first random access resource set is selected as the one random access resource set from the first random access resource set and the second random access resource set, and overlaps with the PUSCH. and stopping downlink monitoring.

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