Terminal, base station, communication method and integrated circuit

Abstract

The invention relates to a terminal, a base station, a communication method and an integrated circuit. Appropriate wireless communication processing is realized according to request conditions. A terminal comprises: a control circuit that, on the basis of a parameter relating to control information indicating the allocation of each of a first channel and a second channel, determines a method for determining the priorities of the first channel and the second channel in which the allocation of resources in a time domain is repeated with each other; and a communication circuit that transmits or receives a signal to at least one of the first channel and the second channel on the basis of the priority.

Description

[0001] This application is a divisional application of the invention patent application with the application date of January 22, 2020, application number 202080031202.6, and invention name “Terminal, base station, communication method and integrated circuit”. Technical Field

[0002] The present disclosure relates to a base station, a terminal and a communication method. Background Art

[0003] In 3GPP (3rd Generation Partnership Project), the specification of Release 15NR (New Radio access technology) has been completed to realize the fifth generation mobile communication system (5G). NR supports the function of ultra-reliable and low-latency communication (URLLC) in combination with high speed and large capacity, which are the basic requirements for the development of mobile broadband (eMBB: enhanced Mobile Broadband).

[0004] Prior art literature

[0005] Non-patent literature

[0006] Non-patent document 1: RP-190726, “New WID: Physical Layer Enhancements for NR Ultra-Reliable and Low Latency Communication (URLLC),” Huawei, HiSilicon, RAN#83

[0007] Non-patent document 2: RP-190728, “New WID: Support of NR Industrial Internet of Things (IoT),” Nokia, Nokia Shanghai Bell, RAN#83

[0008] Non-patent document 3: R1-1905092, “Discussion on UCI enhancement for URLLC,” Panasonic, RAN1#96bis, April 2019

[0009] Non-patent document 4: R1-1905094, “Discussion on scheduling / HARQ enhancement for URLLC,” Panasonic, RAN1#96bis, April 2019

[0010] Non-patent document 5: 3GPP TS38.133 V15.5.0, “NR; Requirements for support of radio resource management (Release 15),” March 2019

[0011] However, there is still room for research on appropriate wireless communication processing according to request conditions. Summary of the invention

[0012] The non-limiting embodiments of the present disclosure contribute to providing a terminal and a communication method capable of implementing appropriate wireless communication processing according to request conditions.

[0013] A terminal according to an embodiment of the present disclosure comprises: a control circuit, which determines a method for determining the priority of a first channel and a second channel whose resource allocation overlaps with each other in a time domain based on parameters related to control information indicating respective allocations of the first channel and the second channel; and a communication circuit, which sends or receives a signal for at least one of the first channel and the second channel based on the priority.

[0014] It should be noted that these general or specific aspects may be implemented by a system, an apparatus, a method, an integrated circuit, a computer program or a recording medium, or may be implemented by any combination of systems, apparatuses, methods, integrated circuits, computer programs and recording media.

[0015] According to one embodiment of the present disclosure, appropriate wireless communication processing according to request conditions can be realized.

[0016] More advantages and effects of an embodiment of the present disclosure will be explained through the description and drawings. These advantages and / or effects are provided by several embodiments, and the features described in the description and drawings, but not necessarily all of them need to be provided in order to obtain one or more of the same features. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a diagram showing an example (scenario 1) of a situation where resources for services having different request conditions overlap in the time domain.

[0018] Figure 2This is a diagram showing an example (scenario 2) of a situation where resources for services having different request conditions overlap in the time domain.

[0019] Figure 3 This is a diagram showing an example (scenario 3) of a situation where resources for services having different request conditions overlap in the time domain.

[0020] Figure 4 This is a diagram showing an example (scenario 4) of a situation where resources for services having different request conditions overlap in the time domain.

[0021] Figure 5 This is a diagram showing an example in which CORESET is repeatedly set in the time domain.

[0022] Figure 6 This figure shows an application example of transmit beamforming.

[0023] Figure 7 This is a block diagram showing a partial configuration example of a terminal according to the first embodiment.

[0024] Figure 8 This is a block diagram showing a configuration example of a base station according to Implementation Example 1.

[0025] Fig. 9 This is a block diagram showing a configuration example of a terminal according to the first embodiment.

[0026] Fig.10 This is a flowchart showing an example of the operation of the terminal according to the first embodiment.

[0027] Fig.11 This is a diagram showing an example of setting the CORESET and channels in Implementation Example 2.

[0028] Fig.12 This is a diagram showing an example of setting the CORESET and channels in Implementation Example 3.

[0029] Fig.13 This is a flowchart showing an example of the operation of the terminal according to the fourth embodiment.

[0030] Fig.14 This is a flowchart showing an example of the operation of the terminal according to the sixth embodiment.

[0031] Fig.15 This is a flowchart showing another example of the operation of the terminal according to the sixth embodiment.

[0032] Fig.16 This is a diagram showing an example of carriers with different subcarrier spacings.

[0033] Fig.17 This is a diagram showing an example of time difference correction between carrier waves.

[0034] Description of Reference Numerals

[0035] 100 Base Stations

[0036] 101, 205 Control Department

[0037] 102 High-level control signal generation unit

[0038] 103 Downlink control information generation unit

[0039] 104, 206 Coding Department

[0040] 105, 207 Modulation Department

[0041] 106, 208 Signal Distribution Department

[0042] 107, 209 Sending Department

[0043] 108, 201 Receiving Department

[0044] 109, 202 Extraction Department

[0045] 110, 203 Demodulation Unit

[0046] 111, 204 Decoding Department

[0047] 200 Terminal. DETAILED DESCRIPTION

[0048] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

[0049] In NR, it is assumed that a terminal (or also referred to as "UE (User Equipment)") corresponds to services with multiple different request conditions (for example, eMBB and URLLC, etc.). In this case, in the terminal, reception resources (in other words, downlink resources or reception periods) or transmission resources (in other words, uplink resources or transmission periods) for services with different request conditions may overlap in the time domain (for example, see Non-Patent Documents 1 and 2).

[0050] Hereinafter, description will be given of cases where, in a terminal, transmission and reception resources corresponding to services having different request conditions overlap in the time domain (for example, also referred to as scenarios).

[0051] <Scenario 1: Intra-UE DL prioritization (DL data / data resource conflicts)>

[0052] In scenario 1, for example Figure 1 As shown, the terminal receives services with different request conditions ( Figure 1 A data signal (e.g., a downlink data signal, or also called a "physical downlink shared channel (PDSCH)") for eMBB and URLLC).

[0053] At this time, in the downlink data signal for each service, resources are allocated by different control information (for example, downlink scheduling allocation information, or also called "downlink allocation information (DL assignment)"). The downlink allocation information may also be included in, for example, Figure 1 In the downlink control channel shown (for example, the physical downlink control channel (PDCCH: Physical Downlink Control Channel)).

[0054] exist Figure 1 In the TDK / PDSCH, resources allocated to a downlink data signal for each service (eg, resources of a PDSCH) are repeated in the time domain.

[0055] <Scenario 2: Intra-UE UL prioritization (UL data / data resource collision)>

[0056] In scenario 2, for example Figure 2 As shown, the terminal sends services with different request conditions ( Figure 2 The data signal for eMBB and URLLC in this example (for example, uplink data signal, or also called "physical uplink shared channel (PUSCH: Physical Uplink Shared Channel)").

[0057] At this time, in the uplink data signal for each service, resources are allocated by different control information (for example, uplink scheduling allocation information, or also called "uplink grant information (UL grant")). The uplink grant information may also be included in, for example, Figure 2 In the PDCCH shown.

[0058] exist Figure 2 In the present invention, resources allocated to uplink data signals for each service (eg, resources of the PUSCH) are repeated in the time domain.

[0059] <Scenario 3: Intra-UE UL prioritization (UL control / control resource collision)>

[0060] In scenario 3, in the retransmission control of the downlink (e.g., hybrid automatic repeat request (HARQ)), the terminal sends a response signal (e.g., acknowledgement / negative acknowledgement (ACK / NACK)) indicating the error detection result of the downlink data signal (e.g., PDSCH) to the base station (e.g., also called "gNB").

[0061] For example Figure 3 As shown, the terminal receives services with different request conditions in the downlink ( Figure 3 In addition, the terminal uses an uplink control channel (for example, a physical uplink control channel (PUCCH: Physical UPlink Control Channel)) to send ACK / NACK for each PDSCH to the base station.

[0062] At this time, resources are allocated in the downlink data signal for each service and the PUCCH corresponding to the downlink data signal by different control information (for example, downlink scheduling assignment information or downlink assignment information).

[0063] exist Figure 3 In the PUCCH, the resources allocated to each service are repeated in the time domain.

[0064] <Scenario 4: Intra-UE UL prioritization (UL data / control resource collision)>

[0065] In scenario 4, for example Figure 4 As shown, the terminal sends services with different request conditions ( Figure 4 The data signal (e.g., PUSCH) for one of the two (e.g., URLLC) (e.g., eMBB and URLLC) and the control signal (e.g., ACK / NACK for PDSCH) for the other (e.g., eMBB).

[0066] At this time, in the uplink data signal, resources are allocated by uplink resource allocation information (e.g., uplink grant information). In addition, in the downlink data signal and the PUCCH corresponding to the downlink data signal, resources are allocated by different downlink scheduling allocation information (e.g., downlink allocation information).

[0067] exist Figure 4 In the IEEE 802.11ac standard, resources allocated to an uplink data signal (eg, resources for a PUSCH) overlap with resources allocated to a PUCCH in the time domain.

[0068] In the above, scenes 1 to 4 are described respectively.

[0069] In the above scenario, in the case where the terminal has the capability of simultaneously receiving or transmitting signals of a plurality of channels, the terminal can simultaneously receive or transmit signals for services having different request conditions without considering mutual influence.

[0070] On the other hand, when the terminal does not have the ability to simultaneously receive or transmit signals of multiple channels, the terminal receives or transmits channels of part of the multiple channels (in the case of the above scenario, any one of the scenarios). Alternatively, when the multiple channels are uplink channels, the terminal controls the transmission power of the multiple channels.

[0071] At this time, when the terminal cannot receive or send signals of multiple channels at the same time, the terminal determines which channel's signal to receive or send. In other words, the terminal can determine the priority of receiving or sending signals in multiple channels.

[0072] For example, as an example of a method for determining the priority of a channel, there is a method based on the reception time (in other words, reception order) of downlink control information (eg, downlink control information (DCI)) including downlink allocation information or uplink authorization information in a terminal.

[0073] In this method, for example, when the terminal sequentially receives DCI including allocation information (for example, downlink allocation information or uplink authorization information) for each channel (in other words, each service), it is judged that the priority of the channel allocated by the DCI received later (in other words, after) is higher than the priority of the channel allocated by the DCI received earlier (in other words, earlier).

[0074] This is because when the priority of the channel allocated by the DCI (downlink allocation information or uplink grant information) previously sent by the base station is high, it is unreasonable to repeatedly allocate the resources of the high-priority channel to the low-priority channel from behind.

[0075] However, in the above-mentioned method of determining the priority, there is still room for research, for example, regarding the following matters (1), (2) and (3).

[0076] (1) In scenario 4 (see, for example, Figure 4 ), for example, the terminal generates a PUSCH ( Figure 4 The processing time of PUSCH of URLLC is different from that of PDSCH received by the terminal. Figure 4 After that, the PDSCH is demodulated and decoded to generate the processing time of the PUCCH including ACK / NACK.

[0077] Therefore, when the resources of PUSCH and PUCCH overlap in the time domain as shown in scenario 4, the base station may not be able to send the DCI corresponding to the high-priority channel (e.g., the URLLC channel) after the DCI corresponding to the low-priority channel (e.g., the eMBB channel). Therefore, for example, in the terminal, since the DCI corresponding to the high-priority channel may be received earlier than the DCI corresponding to the low-priority channel, in the method of determining the priority of the channel based on the reception order of the DCI, the terminal may sometimes fail to appropriately determine the priority of the channel.

[0078] (2) In NR, the terminal receives DCI including at least one of downlink allocation information and uplink authorization information from the base station. For the control channel PDCCH for sending DCI, for example, CORESET (Control Resource Set) and search space are set for the terminal. For example, the terminal monitors (in other words, blindly decodes) the search space as the location of the PDCCH candidate within the CORESET, and detects the DCI sent to the terminal. At this time, for services with different request conditions, different CORESETs (or search spaces) can be set in the terminal. In addition, for example, Figure 5 As shown, for services with different request conditions ( Figure 5 At least part of the CORESET set for eMBB and URLLC respectively may be repeatedly set in the time domain.

[0079] In this case, when the terminal receives DCI corresponding to each service from each CORESET, it is sometimes impossible to determine which DCI is the DCI received later (in other words, which service has a higher priority). Figure 5 In some cases, it is impossible to determine the priority between services (or channels) with different request conditions (the method of determining the priority is unclear).

[0080] (3) In NR, for example, it is envisaged that transmit beamforming is applied in the base station in a high frequency band above 6 GHz. By applying transmit beamforming, the communicable distance and area between the base station and the terminal can be ensured. For example, there is a structure in which the base station switches the beam sequentially within the time slot to send the PDCCH (for example, also called beam sweeping). In addition, when beamforming is applied to the PDCCH, for example Figure 6 As shown, for each beam ( Figure 6 There are four beams in the figure) and set the CORESET (or search space) respectively.

[0081] In this case, the CORESET (in other words, the search space or PDCCH) to which the DCI is allocated is preferably the CORESET corresponding to the beam suitable for the terminal. Figure 6 As shown, in the time domain, from among the multiple resources of the CORESET corresponding to each beam, the resources of the CORESET corresponding to the beam suitable for the terminal are set and allocated to the terminal. Therefore, the scheduling of the DCI in the time domain is limited. Therefore, in the case of applying beamforming, in the method of determining the priority based on the order of the DCI, the scheduling constraint will increase the delay.

[0082] In the above, item (1), item (2) and item (3) are explained respectively.

[0083] As another example of a method for determining the priority of a channel, non-patent document 3 and non-patent document 4 disclose a method of, for example, notifying the terminal of information indicating the priority of the channel (hereinafter also referred to as "priority information" or "priority indication") from the base station. The priority indication is notified, for example, through downlink allocation information or uplink authorization information.

[0084] In non-patent document 3 and non-patent document 4, for example, in scenario 4 where resources are repeated in the time domain between PUSCH and PUCCH (see, for example, Figure 4 ), the terminal determines the priority channel between PUSCH and PUCCH based on the priority indications respectively included in the uplink authorization information and the downlink allocation information.

[0085] In addition, in non-patent document 3 and non-patent document 4, for example, in scenario 1, scenario 2, and scenario 3 (for example, see Figure 1 , Figure 2 and Figure 3), the terminal receives DCI (for example, including downlink allocation information or uplink authorization information) in sequence, and determines that the priority of the channel allocated by the DCI received later among the multiple DCIs is higher. In addition, for example, when the DCI includes a priority indication, the terminal does not assume that the priority of the channel allocated by the DCI received later among the multiple DCIs will be set lower than the priority of the channel allocated by the DCI received earlier.

[0086] Through these methods, for example, even when the channels sent or received by the terminal are repeated in the time domain, the terminal can appropriately determine the priority between channels through the priority indication. However, in this method, the above-mentioned items (2) and (3) have not been studied. For example, there is still room for research on the method of determining the priority of channels when the resource area (e.g., CORESET, search space, or PDCCH) including control information (e.g., downlink allocation information and uplink authorization information) indicating the allocation of each channel repeated in the time domain as in the above-mentioned item (2) overlaps in the time domain. In addition, there is still room for research on the method of determining the priority of channels when the resource area (e.g., CORESET, search space, or PDCCH) including control information indicating the allocation of at least one channel of the channels repeated in the time domain as in the above-mentioned item (3) is a resource area in which multiple beams are set separately.

[0087] Therefore, in one embodiment of the present disclosure, an operation of a terminal when channels corresponding to services having different request conditions overlap in the time domain is described.

[0088] Hereinafter, each embodiment will be described in detail.

[0089] (Implementation Method 1)

[0090] [Overview of Communication System]

[0091] The communication system according to each embodiment of the present disclosure includes a base station 100 and a terminal 200 .

[0092] Figure 7 FIG. 2 is a block diagram showing a partial structure of a terminal 200 according to an embodiment of the present disclosure. Figure 7 In the terminal 200 shown, the control unit 205 (e.g., equivalent to a control circuit) determines a method for determining the priority of the first channel and the second channel whose resource allocation overlaps each other in the time domain based on a parameter related to control information (e.g., DCI), wherein the parameter related to the control information indicates the allocation of the first channel and the second channel respectively. The receiving unit 201 and the transmitting unit 209 (e.g., equivalent to a communication circuit) receive or transmit a signal for at least one of the first channel and the second channel based on the priority.

[0093] [Structure of base station]

[0094] Figure 8 is a block diagram showing a configuration example of base station 100 according to Embodiment 1. Figure 8 In the figure, the base station 100 has a control unit 101, a high-layer control signal generating unit 102, a downlink control information generating unit 103, a coding unit 104, a modulation unit 105, a signal allocation unit 106, a transmission unit 107, a reception unit 108, an extraction unit 109, a demodulation unit 110 and a decoding unit 111.

[0095] The control unit 101 determines information for DCI reception of the terminal 200, and outputs the determined information to the higher layer control signal generation unit 102 and the extraction unit 109. The information for DCI reception may include information related to CORESET, search space configuration, and DCI field, for example.

[0096] In addition, the control unit 101 determines information related to a downlink signal for transmitting a downlink data signal (e.g., PDSCH), a higher layer control signal, or downlink control information (e.g., DCI) (e.g., coding / modulation scheme (MCS: Modulation and Coding Scheme) and wireless resource allocation, etc.). The control unit 101 outputs the determined information to the coding unit 104, the modulation unit 105, and the signal allocation unit 106, for example. In addition, the control unit 101 outputs information related to the downlink signal to the downlink control information generation unit 103.

[0097] Furthermore, the control unit 101 determines information for the terminal 200 to transmit ACK / NACK for the downlink data signal, and outputs the determined information to the downlink control information generation unit 103 and the extraction unit 109. The information for transmitting ACK / NACK may include information related to PUCCH resources, for example.

[0098] Furthermore, the control unit 101 determines information (for example, coding / modulation scheme and radio resource allocation) used by the terminal 200 to transmit an uplink data signal, and outputs the determined information to the downlink control information generation unit 103 , the extraction unit 109 , and the decoding unit 111 .

[0099] In addition, when the priority indication is applied, the control unit 101 determines the priorities of multiple channels (e.g., PDSCH, PUSCH, or PUCCH), and outputs the determined priority information (e.g., priority indication) to the downlink control information generation unit 103. In addition, the control unit 101 outputs the determined priority information to the extraction unit 109.

[0100] The higher layer control signal generation unit 102 generates a higher layer control signal bit sequence based on the information input from the control unit 101 , and outputs the higher layer control signal bit sequence to the coding unit 104 .

[0101] The downlink control information generation unit 103 generates a downlink control information (e.g., DCI) bit string based on the information input from the control unit 101, and outputs the generated DCI bit string to the encoding unit 104. In addition, the control information is sometimes sent to multiple terminals. Therefore, the downlink control information generation unit 103 scrambles the PDCCH that sends the DCI by terminal-specific identification information. The terminal-specific identification information may be, for example, C-RNTI (Cell Radio Network Temporary Identifier), MCS-C-RNTI (Modulation and Coding Scheme C-RNTI), RNTI imported for URLLC, etc., or other RNTIs.

[0102] The coding unit 104 encodes the downlink data signal, the bit string input from the high-layer control signal generating unit 102, or the DCI bit string input from the downlink control information generating unit 103, for example, based on the information input from the control unit 101 (for example, information related to the coding rate), and outputs the coded bit string to the modulation unit 105.

[0103] The modulation unit 105 modulates the coded bit sequence input from the coding unit 104 based on the information (eg, information on the modulation method) input from the control unit 101 , and outputs the modulated signal (eg, symbol sequence) to the signal distribution unit 106 .

[0104] Signal allocator 106 maps the symbol sequence (including, for example, a downlink data signal or a control signal) input from modulator 105 to the radio resources based on the information indicating the radio resources input from controller 101. Signal allocator 106 outputs the downlink signal to which the signal is mapped to transmitter 107.

[0105] The transmitting unit 107 performs transmission waveform generation processing such as OFDM (Orthogonal Frequency Division Multiplexing) on ​​the signal input from the signal distribution unit 106. In addition, in the case of OFDM transmission with CP attached, the transmitting unit 107 performs IFFT (Inverse Fast Fourier Transform) processing on the signal and attaches CP to the signal after IFFT. In addition, the transmitting unit 107 performs RF (Radio Frequency) processing such as D / A (Digital-to-Analog) conversion and up-conversion on the signal, and transmits the wireless signal to the terminal 200 via the antenna.

[0106] The receiving unit 108 performs RF processing such as down-conversion or A / D (Analog-to-Digital) conversion on the uplink signal received from the terminal 200 via the antenna. In addition, in the case of OFDM transmission, the receiving unit 108 performs FFT (Fast Fourier Transform) on the received signal and outputs the obtained frequency domain signal to the extraction unit 109.

[0107] The extraction unit 109 determines information related to the channel of the signal received by the terminal 200 (for example, information related to the channel with a high priority) based on the information input from the control unit 101. The extraction unit 109 extracts, from the received signal input from the receiving unit 108, a radio resource portion in which, for example, an uplink data signal or an ACK / NACK signal or both are transmitted, based on the determined information, and outputs the extracted radio resource portion to the demodulation unit 110.

[0108] The demodulation unit 110 demodulates at least one of the uplink data signal and the ACK / NACK signal based on the signal (radio resource portion) input from the extraction unit 109 , and outputs the demodulation result to the decoding unit 111 .

[0109] The decoding unit 111 performs error correction decoding on at least one of the uplink data signal and the ACK / NACK signal based on the information input from the control unit 101 and the demodulation result input from the demodulation unit 110 to obtain a decoded received bit sequence.

[0110] [Terminal structure]

[0111] Fig. 9 2 is a block diagram showing a configuration example of the terminal 200 according to the present embodiment. Fig. 9In the embodiment, the terminal 200 includes a receiving unit 201, an extracting unit 202, a demodulating unit 203, a decoding unit 204, a controlling unit 205, an encoding unit 206, a modulating unit 207, a signal distributing unit 208, and a transmitting unit 209.

[0112] The receiving unit 201 receives a downlink signal (e.g., a downlink data signal or a downlink control signal) from the base station 100 via an antenna, performs RF processing such as down-conversion or A / D conversion on the wireless received signal, and obtains a received signal (baseband signal). In addition, when receiving an OFDM signal, the receiving unit 201 performs FFT processing on the received signal to convert the received signal into the frequency domain. The receiving unit 201 outputs the received signal to the extraction unit 202.

[0113] The extraction unit 202 extracts a radio resource portion that may include a downlink control signal from the reception signal input from the reception unit 201 based on the information related to the radio resource of the downlink control information input from the control unit 205, and outputs it to the demodulation unit 203. In addition, the extraction unit 202 extracts a radio resource portion that includes a downlink data signal based on the information related to the radio resource of the data signal input from the control unit 205, and outputs it to the demodulation unit 203.

[0114] In addition, the extraction unit 202, for example, in scenario 1 (in other words, when receiving a downlink data signal. For example, see Figure 1 ), based on the information related to the priority input from the control unit 205, the downlink data signal is extracted from the received signal.

[0115] The demodulation unit 203 demodulates the signal input from the extraction unit 202 , and outputs the demodulation result to the decoding unit 204 .

[0116] The decoding unit 204 performs error correction decoding on the demodulation result input from the demodulation unit 203, and obtains, for example, downlink reception data, a higher layer control signal, or downlink control information. The decoding unit 204 outputs the higher layer control signal and the downlink control information to the control unit 205, and outputs the downlink reception data.

[0117] The control unit 205 determines the priority of the channel based on, for example, the information for DCI reception (e.g., information related to CORESET, search space configuration, or DCI field) included in the high-layer control signal input from the decoding unit 204 and the radio resource allocation information indicated by the downlink control information. The control unit 205 outputs information related to the determined priority to the extraction unit 202 (e.g., in the case of scenario 1), the encoding unit 206, and the signal allocation unit (e.g., in the case of scenarios 2, 3, and 4). In addition, an example of a method for determining the priority of a channel will be described later.

[0118] The control unit 205 determines information related to transmission of uplink signals, and outputs the determined information to the coding unit 206 and the signal allocation unit 208. The control unit 205 determines information related to reception of downlink signals, and outputs the determined information to the extraction unit 202.

[0119] The coding unit 206 codes the uplink data signal or the ACK / NACK signal for the downlink data signal based on the information input from the control unit 205 , and outputs the coded bit sequence to the modulation unit 207 .

[0120] The modulation unit 207 modulates the coded bit sequence input from the coding unit 206 , and outputs the modulated signal (symbol sequence) to the signal distribution unit 208 .

[0121] The signal allocation unit 208 maps the signal input from the modulation unit 207 to the radio resource based on the information input from the control unit 205 , and outputs the uplink signal to which the signal is mapped to the transmission unit 209 .

[0122] In addition, the signal distribution unit 208 performs the following operations in the case of scenario 2, scenario 3, and scenario 4 (in other words, when the uplink signal is transmitted. For example, see Figure 2 , Figure 3 and Figure 4 ) and, based on the information related to the priority input from the control unit 205, determines the uplink channel used for the signal output to the sending unit 209.

[0123] The transmitting unit 209 generates a transmission signal waveform such as OFDM on the signal input from the signal distribution unit 208. In addition, the transmitting unit 209 performs IFFT processing on the signal in the case of OFDM transmission using CP, and adds CP to the signal after IFFT. Alternatively, in the case of generating a single carrier waveform, the transmitting unit 209 may also add a DFT (Discrete Fourier Transform) unit (not shown) in the latter stage of the modulation unit 207 or the front stage of the signal distribution unit 208. In addition, the transmitting unit 209 performs RF processing such as D / A conversion and up-conversion on the transmission signal, and transmits the wireless signal to the base station 100 via the antenna.

[0124] [Operation Example of Base Station 100 and Terminal 200]

[0125] An operation example in the base station 100 and the terminal 200 having the above configuration will be described.

[0126] Fig.10 An example of a flow related to the transmission and reception processing of the terminal 200 according to the present embodiment is shown.

[0127] exist Fig.10In the present invention, the terminal 200 receives DCI including downlink allocation information or uplink grant information from the base station 100 (ST101). Fig.10 As an example, terminal 200 receives DCI#1 and DCI#2 corresponding to services having different request conditions, respectively.

[0128] For the control channel PDCCH for transmitting DCI, for example, CORESET and search space are set for the terminal 200. The terminal 200 monitors the search space as the position of the PDCCH candidate in the CORESET, and detects the DCI sent to the terminal 200. In addition, different CORESETs (or search spaces) can be set for services with different request conditions. In addition, for example, Figure 5 As shown, CORESETs corresponding to services having different request conditions may be repeatedly set in the time domain. Therefore, for example, in different CORESETs (or search spaces), the terminal 200 detects DCI#1 and DCI#2 respectively.

[0129] Terminal 200 acquires resource allocation information indicating resources of a channel allocated to terminal 200 based on downlink allocation information or uplink grant information included in each of detected DCI #1 and DCI #2 (ST102).

[0130] The terminal 200 determines, based on the acquired resource allocation information, whether the relationship between the allocated resources of the channels (e.g., PDSCH, PUSCH, or PUCCH) respectively corresponding to the services having different request conditions corresponds to any one of the above-mentioned scenarios 1, 2, 3, or 4 (ST103). In other words, the terminal 200 determines whether the allocated resources of the channels respectively corresponding to the services having different request conditions overlap in the time domain.

[0131] When the scene corresponds to any one of scene 1, scene 2, scene 3, or scene 4 (ST103: Yes), terminal 200 determines whether a certain condition is satisfied (ST104).

[0132] The condition in Implementation 1 (hereinafter referred to as "Condition A") is a situation where the resource area (for example, CORESET, search space or PDCCH. CORESET is described below as an example) containing DCI#1 and DCI#2 received (in other words, detected) by terminal 200 is repeatedly set in the time domain.

[0133] When Condition A is satisfied, that is, when the CORESET containing each DCI#1 and DCI#2 is repeatedly set in the time domain (ST104: Yes), the terminal 200 determines the channel to be sent or received first (in other words, the priority of the channel) based on the priority information (Prorityindication) contained in each DCI (ST105). In other words, when Condition A is satisfied, the terminal 200 does not determine the priority of the channel based on the time (or order) of reception (or detection) of DCI#1 and DCI#2. For example, when Condition A is satisfied, the terminal 200 can determine that the time of reception of each DCI is the same.

[0134] In this way, when the CORESET including each DCI#1 and DCI#2 overlaps in the time domain, the terminal 200 selects a method for determining the priority of the channel according to the priority indication. Here, as an example of the priority indication, a priority indicated by 1 bit (for example, 0 or 1) of the DCI can be set.

[0135] In addition, in the priority indication, "1" can represent a high priority, and "0" can represent a low priority. For example, in DCI#1 and DCI#2 for services with different request conditions, when the priority indication of DCI#1 is 1 and the priority indication of DCI#2 is 0, the terminal 200 determines that the priority of the channel allocated through DCI#1 is higher than the priority of the channel allocated through DCI#2. On the other hand, when the priority indication of DCI#1 is 0 and the priority indication of DCI#2 is 1, the terminal 200 determines that the priority of the channel allocated through DCI#2 is higher than the priority of the channel allocated through DCI#1.

[0136] In addition, the number of bits of the priority indication is not limited to 1 bit, and may be multiple bits. In addition, the correspondence between the value of the priority indication (e.g., 0 and 1) and the priority is not limited to the above example. In addition, the above example of the priority indication may also be applied to other embodiments.

[0137] exist Fig.10 In the case where Condition A is not satisfied, for example, when the CORESETs including DCI#1 and DCI#2 are not repeatedly configured in the time domain (ST104: No), the terminal 200 determines the priority of the channels for DCI#1 and DCI#2 based on the order in which they are received (or detected) (ST106). For example, the terminal 200 determines that the priority of the channel allocated by the DCI received later among DCI#1 and DCI#2 is higher than the priority of the channel allocated by the DCI received earlier.

[0138] In this way, when the CORESETs including the DCI# 1 and DCI# 2 do not overlap in the time domain, the terminal 200 selects a method for determining the priority of the channels according to the order of receiving the DCIs.

[0139] Terminal 200 receives or transmits a signal of a channel allocated by at least one of DCI #1 and DCI #2 based on the resource allocation information of each channel and the determined priority of each channel (ST107).

[0140] On the other hand, in the processing of ST103, when it does not correspond to any of the scenarios 1, 2, 3 and 4 (ST103: No), that is, when the allocated resources of the channels corresponding to the services with different request conditions do not overlap in the time domain, the terminal 200 receives or sends the signal of the channel allocated through DCI#1 and DCI#2 based on the resource allocation information of each channel (ST108).

[0141] As described above, in the present embodiment, the terminal 200 determines a method for determining the priority of channels (for example, a first channel corresponding to URLLC and a second channel corresponding to eMBB) for which resource allocation is repeated in the time domain based on information representing resources such as CORESET, search space or PDCCH (in other words, parameters related to control information), wherein the resources such as CORESET, search space or PDCCH correspond to DCI representing the allocation of each of the first channel and the second channel.

[0142] For example, in this embodiment, the terminal 200 selects one of a priority determination method based on a priority indication (e.g., a first determination method) and a priority determination method based on the reception order of the DCI (e.g., a second determination method) based on whether the CORESETs corresponding to the DCIs corresponding to services with different request conditions are repeated in the time domain.

[0143] Thus, when CORESETs each including a plurality of DCIs are not repeatedly configured in the time domain, terminal 200 can appropriately determine the priority of channels based on the order in which each DCI is received. In other words, terminal 200 can more simply determine the priority of channels without notification of priority indication or the like.

[0144] Furthermore, when CORESETs each including a plurality of DCIs are repeatedly configured in the time domain, for example, even when the reception times of the DCIs are the same, the terminal 200 can clearly determine a channel to be prioritized based on the priority indication.

[0145] Therefore, according to the present embodiment, even when channels corresponding to services having different request conditions are repeated in the time domain, and CORESET (or search space or PDCCH) including control information indicating allocation of each of the channels repeated in the time domain is repeated in the time domain, the terminal 200 can appropriately determine the priority of the channel and transmit and receive signals of the channel corresponding to the priority. Thus, in the present embodiment, appropriate wireless communication processing according to the request condition can be implemented.

[0146] In addition, in implementation mode 1, when receiving (or detecting) DCI, when the CORESET (or search space or PDCCH) containing each DCI is repeatedly set in the time domain, the terminal 200 determines the priority channel based on the priority indication notified by the DCI. Here, for example, in the DCI imported for URLLC, the control information notified by the DCI can be flexibly set. Therefore, in the DCI imported for URLLC, for example, the presence or absence of the priority indication can also be set.

[0147] Therefore, for example, when the CORESET (or search space or PDCCH) is repeatedly set in the time domain, the base station 100 may include the priority indication in the DCI and send it. In other words, when the CORESET (or search space or PDCCH) is not repeated in the time domain, the base station 100 does not include the priority indication in the DCI. As a result, for example, when the priority of the channel is not determined based on the priority indication in the terminal 200, the DCI size can be reduced.

[0148] (Implementation Method 2)

[0149] The basic structure of the base station and the terminal of this embodiment is the same as that of the base station 100 and the terminal 200 of Embodiment 1, and therefore, the base station and the terminal of this embodiment are referred to as follows. Figure 8 and Fig. 9 Provide explanation.

[0150] In this embodiment, the base station 100 applies transmit beamforming. Fig.11 As shown, multiple CORESETs (or search spaces) can be set within X consecutive OFDM symbols in a time slot. Fig.11 In the example, four CORESETs are set corresponding to four different beams (Beam 1, Beam 2, Beam 3 and Beam 4).

[0151] The process related to the transmission and reception processing of the terminal 200 of this embodiment is similar to that of the embodiment 1 (for example, see Fig.10 ) Similarly. In this embodiment, Fig.10 The processing of ST104 shown is different from that of the first embodiment.

[0152] exist Fig.10 In ST104 shown, terminal 200 determines whether a certain condition is satisfied (ST104).

[0153] The condition in the second embodiment (hereinafter referred to as "Condition B") is a case where a resource region (for example, CORESET, search space, or PDCCH. Hereinafter, CORESET is described as an example) including at least one DCI of DCI#1 and DCI#2 received (in other words, detected) by terminal 200 is one CORESET among a plurality of CORESETs set in consecutive X OFDM symbols in a time slot. In other words, Condition B may be a case where at least one DCI of DCI#1 and DCI#2 is configured in any one CORESET among a plurality of CORESETs set in X OFDM symbols.

[0154] When Condition B is satisfied, that is, when the CORESET including at least one of DCI #1 and DCI #2 is one of the multiple CORESETs set in the X OFDM symbol (ST104: Yes), the terminal 200 determines the channel to be preferentially transmitted or preferentially received (in other words, the priority of the channel) based on the priority information (Prority indication) included in each DCI (ST105). In other words, when Condition B is satisfied, the terminal 200 does not determine the priority of the channel based on the time (or order) of reception (or detection) of DCI #1 and DCI #2. For example, when Condition B is satisfied, the terminal 200 can determine that the time of reception of each DCI is the same.

[0155] In this way, when at least one of DCI #1 and DCI #2 is allocated in any one of the CORESETs configured in X OFDM symbols, terminal 200 selects a method for determining the priority of a channel based on the priority indication.

[0156] On the other hand, when Condition B is not satisfied, for example, when the CORESETs including DCI #1 and DCI #2 are not multiple CORESETs set in X OFDM symbols (ST104: No), the terminal 200 determines the priority of the channels based on the order in which DCI #1 and DCI #2 are received (or detected) (ST106). For example, the terminal 200 determines that the priority of the channel allocated by the DCI received later than the priority of the channel allocated by the DCI received earlier among DCI #1 and DCI #2.

[0157] In this way, when at least one of DCI #1 and DCI #2 is not allocated in any of the CORESETs configured in X OFDM symbols, terminal 200 selects a method for determining the priority of channels according to the order of receiving DCIs.

[0158] For example, in Fig.11 In the case of the PDCCH including the DCI for URLLC and the PDCCH including the DCI for eMBB are allocated to the previous resources in the time domain. Therefore, assuming that the terminal 200 determines the priority of the channels based on the order of receiving the DCI, the priority of the channels allocated by the DCI for eMBB is set higher than the priority of the channels allocated by the DCI for URLLC. However, as described above, Fig.11 In the present invention, transmit beamforming (for example, Beam 1 to Beam 4) is applied to the DCI for URLLC, and the PDCCH including the DCI for URLLC is configured in the beam ( Fig.11 In this way, when Condition B is satisfied, the scheduling in the time domain is restricted for the DCI (or PDCCH) to which transmit beamforming is applied.

[0159] In contrast, in the present embodiment, when Condition B is satisfied, for example, when beamforming is applied to DCI (or PDCCH), terminal 200 can appropriately determine the priority of the channel based on the priority indication without depending on the time of receiving (or detecting) DCI. Fig.11 It is also possible that, based on the priority indication, the priority of the channel allocated via the DCI for URLLC is set higher than the priority of the channel allocated via the DCI for eMBB.

[0160] Thus, in this embodiment, the terminal 200 determines the priority of channels (for example, a first channel corresponding to URLLC and a second channel corresponding to eMBB) for which resource allocation overlaps in the time domain based on information (for example, X OFDM symbols) indicating resources corresponding to each of the plurality of beams that can be set for DCI.

[0161] For example, in this embodiment, the terminal 200 selects one of a priority determination method based on a priority indication and a priority determination method based on the order of receiving the DCI based on whether at least one of the DCIs corresponding to services with different request conditions is configured in a CORESET corresponding to each of the multiple beams.

[0162] Thus, according to this embodiment, even when channels corresponding to services with different request conditions overlap in the time domain and scheduling in the time domain of the application DCI by beamforming is limited, the terminal 200 can appropriately determine the priority of the channel and transmit and receive signals of the channel corresponding to the priority. Thus, in this embodiment, appropriate wireless communication processing according to the request condition can be implemented.

[0163] In this embodiment, X symbols may be set within the range of the number of symbols in a time slot (eg, 14 symbols). The value of X may be a value determined in the standard or may be statically set by a cell-specific, group-specific, or terminal-specific higher layer signal.

[0164] In addition, for example, the introduction of a time unit shorter than a time slot (e.g., also referred to as a "sub-time slot") is being studied in URLLC. For example, a sub-time slot may also be a time unit consisting of 7 code elements (not limited to 7 code elements). For example, the time slot described in this embodiment may also be replaced by a sub-time slot.

[0165] (Implementation 3)

[0166] The basic structure of the base station and the terminal of this embodiment is the same as that of the base station 100 and the terminal 200 of Embodiment 1, and therefore, the base station and the terminal of this embodiment are referred to as follows. Figure 8 and Fig. 9 Provide explanation.

[0167] In this embodiment, the base station 100 applies transmit beamforming. Fig.12 As shown, multiple resource areas with different spatial reception parameters can be set (for example, CORESET, search space or PDCCH. CORESET is described below as an example). In addition, spatial reception parameters are also called "QCL (Quasi Co-Location)-Type D". Different QCL-Types, for example, represent different beam settings. For example, in Fig.12 In the , four CORESETs are set corresponding to four spatial reception parameters (for example, corresponding to Beam 1, Beam 2, Beam 3 and Beam 4, respectively).

[0168] In this embodiment, for example, Fig.12 As shown, a set of CORESETs with different QCL-TypeDs are defined.

[0169] The process related to the transmission and reception processing of the terminal 200 of this embodiment is similar to that of the embodiment 1 (for example, see Fig.10 ) Similarly. In this embodiment, Fig.10 The processing of ST104 shown is different from that of the first embodiment.

[0170] exist Fig.10 In ST104 shown, terminal 200 determines whether a certain condition is satisfied (ST104).

[0171] The condition in Implementation 3 (hereinafter referred to as "Condition C") is a case where a CORESET including at least one of DCI #1 and DCI #2 received (in other words, detected) by Terminal 200 is included in the above-mentioned set of CORESETs. In other words, Condition C may be a case where at least one of DCI #1 and DCI #2 is configured in a CORESET within the set of CORESETs.

[0172] When Condition C is satisfied, that is, when a CORESET including at least one of DCI#1 and DCI#2 is included in the set of CORESETs (ST104: Yes), the terminal 200 determines a channel to be sent or received first (in other words, the priority of the channel) based on the priority information (Prority indication) included in each DCI (ST105). In other words, when Condition C is satisfied, the terminal 200 does not determine the priority of the channel based on the time (or order) of reception (or detection) of DCI#1 and DCI#2. For example, when Condition C is satisfied, the terminal 200 can determine that the time of reception of each DCI is the same.

[0173] Thus, when at least one of DCI#1 and DCI#2 is configured in one of the resources corresponding to a plurality of QCL-TypeDs (eg, a set of CORESETs), terminal 200 selects a method for determining the priority of a channel based on a priority indication.

[0174] On the other hand, when Condition C is not satisfied, for example, when the CORESET including DCI#1 and DCI#2 is not included in the set of CORESETs (ST104: No), the terminal 200 determines the priority of the channels for DCI#1 and DCI#2 based on the order in which they are received (or detected) (ST106). For example, the terminal 200 determines that the priority of the channel allocated by the DCI received later among DCI#1 and DCI#2 is higher than the priority of the channel allocated by the DCI received earlier.

[0175] Thus, when at least one of DCI#1 and DCI#2 is not configured in any of the resources corresponding to a plurality of QCL-TypeDs (eg, a set of CORESETs), terminal 200 selects a method for determining channel priority based on the order in which DCIs are received.

[0176] For example, in Fig.12 In the case of the PDCCH including the DCI for URLLC and the PDCCH including the DCI for eMBB, they are allocated to the previous resources in the time domain. Therefore, assuming that the terminal 200 determines the priority of the channels based on the order of receiving the DCI, the priority of the channels allocated by the DCI for eMBB is set higher than the priority of the channels allocated by the DCI for URLLC. Fig.12 In the embodiment, transmit beamforming (e.g., Beam 1 to Beam 4) is applied to the DCI for URLLC, and the PDCCH including the DCI for URLLC is configured in the CORESET corresponding to the QCL-Type D (spatial reception parameter) suitable for the PDCCH. In this way, when Condition C is met, the scheduling in the time domain is restricted for the DCI (or PDCCH) to which transmit beamforming is applied.

[0177] In contrast, in the present embodiment, when Condition C is satisfied, for example, when beamforming is applied to DCI (or PDCCH), terminal 200 can appropriately determine the priority of the channel based on the priority indication without depending on the time of receiving (or detecting) DCI. Fig.12 It is also possible that, based on the priority indication, the priority of the channel allocated via the DCI for URLLC is set higher than the priority of the channel allocated via the DCI for eMBB.

[0178] Thus, in this embodiment, the terminal 200 determines the priority of channels (for example, a first channel corresponding to URLLC and a second channel corresponding to eMBB) where resource allocation overlaps in the time domain based on information (for example, a set of CORESETs) representing resources corresponding to multiple spatial parameters (for example, QCL-TypeD) that can be set for DCI.

[0179] For example, in this embodiment, the terminal 200 selects one of a priority determination method based on a priority indication and a priority determination method based on the order of receiving the DCI based on whether at least one DCI corresponding to services with different request conditions is configured in the CORESET within the above-mentioned set.

[0180] Thus, according to this embodiment, even when channels corresponding to services with different request conditions overlap in the time domain and scheduling in the time domain of the application DCI by beamforming is limited, the terminal 200 can appropriately determine the priority of the channel and transmit and receive signals of the channel corresponding to the priority. Thus, in this embodiment, appropriate wireless communication processing according to the request condition can be implemented.

[0181] In addition, in this embodiment, regarding the method for setting a set of CORESETs with different QCL-TypeDs, for example, a set including the number of CORESETs or search spaces may be set by a high-layer signal. In addition, a time interval for a set of CORESETs may be introduced, and CORESETs (or search spaces or PDCCHs) with different QCL-Types included in the time interval may be considered as one set. The time interval may be, for example, a time slot or a time length different from a time slot.

[0182] In addition, for example, the introduction of a time unit shorter than a time slot (e.g., also referred to as a "sub-time slot") is being studied in URLLC. For example, a sub-time slot may also be a time unit consisting of 7 code elements (not limited to 7 code elements). For example, the time slot described in this embodiment may also be replaced by a sub-time slot.

[0183] (Implementation 4)

[0184] The basic structure of the base station and the terminal of this embodiment is the same as that of the base station 100 and the terminal 200 of Embodiment 1, and therefore, the base station and the terminal of this embodiment are referred to as follows. Figure 8 and Fig. 9 Provide explanation.

[0185] In this embodiment, for example, when the terminal 200 receives (or detects) DCI, when the resource area (for example, CORESET, search space or PDCCH. CORESET is described below as an example) containing each DCI is repeatedly set in the time domain (in other words, Condition A), a "reference time" is introduced to determine the priority of the channel.

[0186] The reference time may be, for example, the first symbol position or the last symbol position in the setting of CORESET.

[0187] Fig.13 An example of a flow related to the transmission and reception processing of the terminal 200 according to this embodiment is shown. Fig.13 In the embodiment 1 (for example, Fig.10 ) The same processing is marked with the same reference numerals, and its description is omitted. Fig.13In the process of ST201, the process of implementation mode 1 (for example, Fig.10 The processing of ST105 is different.

[0188] exist Fig.13 In the case where Condition A is satisfied, that is, when the CORESETs including the respective DCI#1 and DCI#2 are repeatedly set in the time domain (ST104: Yes), the terminal 200 determines a channel to be transmitted or received with priority (in other words, the priority of the channel) based on the reference time corresponding to the CORESET including the respective DCIs (ST201). For example, the terminal 200 determines that the channel allocated by the DCI whose reference time is later in the time domain among DCI#1 and DCI#2 has a higher priority.

[0189] In this way, when the CORESET containing each DCI#1 and DCI#2 is repeated in the time domain, the terminal 200 selects a method for determining the priority of the channel based on information related to the position of the resources (for example, CORESET, search space or PDCCH) corresponding to DCI#1 and DCI#2 respectively in the time domain.

[0190] On the other hand, when the CORESETs including the respective DCI#1 and DCI#2 do not overlap in the time domain, the terminal 200 selects a method for determining the priority of the channels according to the order in which the DCIs are received ( Fig.13 ST106).

[0191] As described above, in the present embodiment, the terminal 200 determines a method for determining the priority of channels (for example, a first channel corresponding to URLLC and a second channel corresponding to eMBB) for which resource allocation is repeated in the time domain based on information representing resources such as CORESET, search space or PDCCH (in other words, parameters related to control information), wherein the resources such as CORESET, search space or PDCCH correspond to DCI representing the allocation of each of the first channel and the second channel.

[0192] For example, in this embodiment, the terminal 200 selects one of a method for determining the priority based on the reference time of the CORESETs corresponding to the DCIs and a method for determining the priority based on the order of reception of the DCIs, based on whether the CORESETs corresponding to the DCIs corresponding to the services with different request conditions are repeated in the time domain.

[0193] Thus, when CORESETs each including a plurality of DCIs do not overlap in the time domain, the terminal 200 can appropriately determine the priority of the channel based on the order in which each DCI is received. In addition, even when CORESETs each including a plurality of DCIs overlap in the time domain, the terminal 200 can clearly determine the priority channel based on the reference time of the CORESET. In other words, the terminal 200 can more simply determine the priority of the channel without notification from the base station 100.

[0194] Therefore, according to this embodiment, even if channels corresponding to services with different request conditions overlap in the time domain, the terminal 200 can appropriately determine the priority of the channel and transmit and receive signals of the channel corresponding to the priority. Thus, in this embodiment, appropriate wireless communication processing according to the request condition can be implemented.

[0195] (Variation of Implementation Method 4)

[0196] The parameter that determines the priority of the channel is not limited to the reference time (for example, the position of the resource region including the DCI in the time domain).

[0197] When multiple resource areas (for example, CORESET, search space or PDCCH. Here, CORESET is described as an example) are repeatedly set in the time domain, for example, Figure 5 As shown, sometimes the first symbol position (or the last symbol position) in each CORESET setting is set to be the same. Therefore, for example, the time length or the number of symbols in the CORESET setting (in other words, the length in the time domain of the CORESET) may be set as a parameter for determining the priority of the channel.

[0198] For example, the terminal 200 may set a higher priority for a channel allocated by DCI transmitted in a CORESET with a shorter time length or number of symbols of the CORESET. Figure 5 In the example shown, the duration of CORESET used by URLLC is shorter than that of CORESET used by eMBB. Figure 5 In the example shown, the priority of the channel allocated by DCI sent in the CORESET for URLLC can be set higher than the priority of the channel allocated by DCI sent in the CORESET for eMBB.

[0199] In addition, the parameters that determine the priority of the channel may include both the reference time and the time length of the CORESET (eg, the number of symbols).

[0200] For example, when a CORESET including each DCI is repeatedly set in the time domain when receiving (or detecting) DCI, the terminal 200 first determines the priority of the channel based on the reference time. At this time, when the reference time (or priority) is the same, the terminal 200 can determine that the channel allocated by the DCI with a shorter time length (or number of symbols) of the CORESET has a higher priority.

[0201] Alternatively, when the CORESET including each DCI is repeatedly set in the time domain when the DCI is received (or detected), the terminal 200 first determines the priority of the channel based on the time length of the CORESET. At this time, if the time length (or priority) is the same, the terminal 200 can determine that the channel allocated by the DCI with a later reference time has a higher priority.

[0202] (Implementation 5)

[0203] The basic structure of the base station and the terminal of this embodiment is the same as that of the base station 100 and the terminal 200 of Embodiment 1, and therefore, the base station and the terminal of this embodiment are referred to as follows. Figure 8 and Fig. 9 Provide explanation.

[0204] As described above, in the terminal 200, for example, a CORESET or a search space is set for the control channel PDCCH for transmitting DCI. The terminal 200 monitors the search space as the position of the PDCCH candidate in the CORESET and detects the DCI sent to the terminal 200. In addition, in the terminal 200, different CORESETs (or search spaces or PDCCHs) can be set for services with different request conditions.

[0205] In this embodiment, it is prohibited to repeatedly set a plurality of CORESETs in the time domain for the terminal 200. In other words, a plurality of CORESETs set in the terminal 200 are not repeatedly set in the time domain.

[0206] According to the present embodiment, since the CORESET (or search space or PDCCH) containing each DCI is not repeatedly set in the time domain when receiving (or detecting) the DCI, the terminal 200 can receive each DCI in sequence. Therefore, the terminal 200 can, for example, determine the priority of the channel allocated by each DCI based on the reception time of the DCI (in other words, the reception order). In addition, since the CORESET is not repeatedly set in the time domain, the terminal 200 can clearly distinguish the reception time of each DCI and can clearly determine the priority channel.

[0207] Therefore, according to this embodiment, even if channels corresponding to services with different request conditions overlap in the time domain, the terminal 200 can appropriately determine the priority of the channel and transmit and receive signals of the channel corresponding to the priority. Thus, in this embodiment, appropriate wireless communication processing according to the request condition can be implemented.

[0208] (Implementation method 6)

[0209] The basic structure of the base station and the terminal of this embodiment is the same as that of the base station 100 and the terminal 200 of Embodiment 1, and therefore, the base station and the terminal of this embodiment are referred to as follows. Figure 8 and Fig. 9 Provide explanation.

[0210] For example, in each of Embodiments 1 to 3, under a certain condition (eg, Condition A, Condition B, or Condition C), terminal 200 determines the priority of the channel based on the priority indication notified by DCI.

[0211] Here, the priorities of channels repeatedly allocated to the terminal 200 in the time domain may also be the same. For example, a case where "1" indicates a high priority and "0" indicates a low priority in the priority indication is described. In this case, in the DCI (DCI#1 and DCI#2) for services with different request conditions, when the priority indications of both DCI#1 and DCI#2 are the same value of 1 or 0, the terminal 200 determines that the priorities of the channels allocated by each DCI#1 and DCI#2 are the same.

[0212] Alternatively, channels allocated by DCI not including a priority indication may be included in channels repeatedly allocated in the time domain to the terminal 200 .

[0213] For example, when the terminal 200 corresponds to a service with multiple different request conditions (e.g., eMBB and URLLC), a DCI including a priority indication (in other words, a newly imported DCI) may be set for URLLC. On the other hand, for eMBB, it is also envisioned that a DCI not including a priority indication (in other words, an existing NR's DCI) is set. In this case, the following situation may occur, in which a priority indication is not included in the DCI for at least one of the channels allocated for services with multiple different request conditions.

[0214] Therefore, in this embodiment, a method of determining the priority of channels in these cases will be described.

[0215] Hereinafter, operation example 1 and operation example 2 of the terminal 200 in this embodiment will be described respectively.

[0216] <Action Example 1>

[0217] In operation example 1, an operation example of the terminal 200 when a channel having the same priority level overlaps in the time domain will be described.

[0218] Fig.14 An example of a flow related to the transmission and reception processing of the terminal 200 according to this embodiment is shown. Fig.14 In the embodiment 1 (for example, Fig.10 ) or embodiment 4 (for example, Fig.13 ) The same processing is marked with the same figure mark and its description is omitted.

[0219] exist Fig.14 In the case where a certain condition (for example, Condition A, Condition B, or Condition C) is satisfied (ST104: Yes), terminal 200 determines a channel to be preferentially transmitted or received based on a priority indication included in each DCI (ST105).

[0220] Here, the terminal 200 determines whether the priority determined for each channel by the priority indication notified by each DCI is the same (ST301). In other words, the terminal 200 determines whether the priority of the channel can be clearly determined by the processing of ST105. When the priority indication (priority) notified by each DCI is different (ST301: No), the terminal 200 performs the processing of ST107.

[0221] On the other hand, when the priority indication (priority) notified by each DCI is the same (ST301: yes), the terminal 200 determines the priority of the channel (ST201) based on the position in the time domain (e.g., reference time. Or, time length (or number of symbols)) of the resources corresponding to the DCI respectively (e.g., CORESET, search space or PDCCH), for example, as in Implementation 4.

[0222] In other words, the terminal 200 is, for example, Fig.14 As shown, when the priorities determined for the channels based on the priority indications are the same as in any of Embodiments 1 to 3, the process may be shifted to priority determination based on the reference time as in Embodiment 4.

[0223] Fig.15 Another example of the flow related to the transmission and reception processing of the terminal 200 of this embodiment is shown. Fig.15 In, with Fig.14 The same processes are denoted by the same reference numerals and their description is omitted.

[0224] For example, Fig.15 In the case where the priority determined for each channel by the priority indication notified by each DCI is the same (ST301: Yes), the operation is the same as Fig.14 The actions shown are different.

[0225] exist Fig.15 In the case where the priority indication (priority) notified by each DCI is the same (ST301: Yes), the terminal 200 determines which condition is satisfied between any one of Condition B and Condition C and Condition A (ST401). In other words, the terminal 200 determines whether the CORESET (or search space or PDCCH) corresponding to each DCI overlaps in the time domain.

[0226] When the CORESETs (or search spaces or PDCCHs) corresponding to the DCIs are repeated in the time domain, for example, in the case of Condition A (ST401: Yes), the terminal 200 can determine the priority of the channel based on the reference time, for example, as in Embodiment 4 (ST201). In other words, when the priorities of the channels determined based on the priority indication are the same as in any one of Embodiments 1 to 3, and the CORESETs (or search spaces or PDCCHs) including the DCIs are repeatedly set in the time domain, the terminal 200 can transfer to the priority determination process based on the reference time, as in Embodiment 4.

[0227] On the other hand, Fig.15 When the CORESETs (or search spaces or PDCCHs) corresponding to the DCIs do not overlap in the time domain, such as in Condition B or Condition C (ST401: No), the terminal 200 may determine the priority of the channel based on the order in which the DCIs are received.

[0228] <Action Example 2>

[0229] In operation example 2, an operation example of terminal 200 is described in which a priority indication is not included in DCI for allocating at least one channel among channels for services having a plurality of different request conditions.

[0230] For example, the terminal 200 receives (or detects) DCIs for services having different request conditions, respectively (for example, set to DCI#1 and DCI#2).

[0231] At this time, there may be a case where one of DCI#1 and DCI#2 (for example, DCI#1) includes a priority indication, while the other DCI (for example, DCI#2) does not include a priority indication.

[0232] In this case, for example, when the priority indication of DCI#1 is 1 (for example, indicating a high priority), the terminal 200 can determine that the priority of the channel allocated through DCI#1 is higher than the priority of the channel allocated through DCI#2.

[0233] On the other hand, for example, when the priority indication of DCI#1 is 0 (for example, indicating a low priority), the terminal 200 may determine that the priority of the channel allocated by DCI#2 is higher than the priority of the channel allocated by DCI#1. Alternatively, in this case, the terminal 200 may determine that the priorities of the channels allocated by DCI#1 and DCI#2 are the same.

[0234] In addition, when neither DCI #1 nor DCI #2 includes a priority indication, terminal 200 can determine that the priorities of the channels respectively allocated by DCI #1 and DCI #2 are the same.

[0235] In addition, when it is determined that the priorities of the channels respectively allocated by DCI #1 and DCI #2 are the same, for example, as described above, the terminal 200 may perform Fig.14 or Fig.15 Action shown.

[0236] In the above, the operation example 1 and the operation example 2 have been described.

[0237] Thus, according to the present embodiment, even when the priorities of the channels determined by the priority indication are the same, or when at least one of the plurality of DCIs notified to the terminal 200 does not include the priority indication, the terminal 200 can appropriately determine the priority of the channel and transmit and receive the signal of the channel corresponding to the priority. Thus, according to the present embodiment, appropriate wireless communication processing according to the request condition can be realized.

[0238] In the above, one embodiment of the present disclosure has been described.

[0239] (Other embodiments)

[0240] (1) In NR, for example, carrier aggregation is supported.

[0241] In carrier aggregation, for example, a method may be used in which a carrier for transmitting a PDCCH is different from a carrier for transmitting a PDSCH allocated by the PDCCH (for example, referred to as "cross-carrier scheduling").

[0242] In addition, in carrier aggregation, for example, cross-carrier scheduling between carriers having different parameter sets (Numerology) (in other words, subcarrier spacing (SCS)) is supported.

[0243] Fig.16 An example of cross-carrier scheduling between carriers with different parameter sets is shown.

[0244] exist Fig.16 In the example shown, regardless of which carrier (for example, Carrier 1 with SCS = 15 kHz and Carrier 2 with SCS = 30 kHz), the CORESET (or search space or PDCCH) with the same number of symbols (for example, 3 symbols) is set. Fig.16 As shown in FIG. 1 , even if the number of symbols of a CORESET (or search space or PDCCH) is the same, the CORESET length (time length) is different between carriers with different parameter sets. Fig.16 In the example, the time length of CORESET (e.g., 3 code elements) in Carrier2 is shorter than the time length of CORESET (e.g., 3 code elements) in Carrier1.

[0245] here, Fig.16 The two CORESET conditions shown are equivalent to Figure 5 The multiple CORESETs shown are repeatedly set in the time domain. Therefore, for example, in cross-carrier scheduling between carriers with different parameter sets, when the PDSCH scheduled from each carrier is repeated in the time domain within the same carrier, the terminal 200 can, for example, act based on at least one of Implementation 1, Implementation 4 and Implementation 6.

[0246] (2) In NR, for example, carrier aggregation is supported. In inter-band carrier aggregation in NR, for example, the terminal 200 allows a reception slot time difference (in other words, time difference) between different carriers (for example, see non-patent document 5). For example, in frequency range 1 (FR (Frequency Range) 1, for example, below 6 GHz), a maximum reception slot time difference of 33 us is allowed.

[0247] For example, when the terminal 200 determines the priority of the channel during the reception time of the DCI, if there is a reception time slot time difference between the carriers, such as Fig.17 As shown, the reception time of DCI can be determined not by the reception time of DCI in absolute time, but by correcting the reception time slot time difference (in other words, time difference) and adjusting the reception time slot time.

[0248] (3) In the above-described embodiments, the method in which terminal 200 determines the priority of channels when channels (in other words, reception resources or transmission resources) for services having different request conditions overlap in the time domain has been described.

[0249] After determining the priority of the channel, terminal 200 may perform the following operations in, for example, the above-mentioned scenario (each of scenarios 1 to 4).

[0250] <Scenario 1 (for example, see Figure 1 )>

[0251] When the terminal 200 cannot simultaneously receive (or demodulate and decode) multiple PDSCHs, the terminal 200 receives (or demodulates and decodes) a PDSCH with a high priority. On the other hand, the terminal 200 does not receive (or demodulate and decode) a PDSCH with a low priority. In addition, the terminal 200 may generate a NACK for the PDSCH with a low priority that is not received (or demodulated and decoded), and feed it back to the base station 100.

[0252] <Scenario 2 (for example, see Figure 2 )>

[0253] When the terminal 200 cannot transmit a plurality of PDSCHs simultaneously, the terminal 200 transmits a PDSCH with a higher priority and does not transmit a PUSCH with a lower priority.

[0254] Alternatively, when the terminal 200 can transmit a plurality of PUSCHs simultaneously but the total transmission power exceeds the maximum transmission power, the terminal 200 may control (scale) the transmission power of the PUSCHs with a lower priority.

[0255] <Scene 3 (see, for example, Figure 3 )>

[0256] When terminal 200 cannot transmit a plurality of PUCCHs simultaneously, terminal 200 transmits ACK / NACK for a high-priority channel. On the other hand, terminal 200 may discard (in other words, may not transmit) ACK / NACK for a low-priority channel.

[0257] Alternatively, the terminal 200 may also multiplex the ACK / NACK for the low-priority channel with the ACK / NACK for the high-priority channel to send each ACK / NACK in one PUCCH. In this case, the terminal 200 may also multiplex the ACK / NACK for the high-priority channel to the PUCCH in sequence. In addition, when there are surplus resources set in the PUCCH, the terminal 200 may also multiplex the ACK / NACK for the low-priority channel to the PUCCH.

[0258] Alternatively, when the terminal 200 can transmit a plurality of PUCCHs simultaneously but the total transmission power exceeds the maximum transmission power, the terminal 200 may control (scale) the transmission power of the PUCCHs with a lower priority.

[0259] <Scene 4 (see, for example, Figure 4 )>

[0260] When the terminal 200 cannot send PUSCH and PUCCH at the same time, the terminal 200 may send a high-priority channel (PUSCH or PUCCH) and discard (in other words, may not send) a low-priority channel (PUSCH or PUCCH).

[0261] Alternatively, terminal 200 may multiplex ACK / NACK onto PUSCH and send the multiplexed ACK / NACK.

[0262] Alternatively, when the terminal 200 can transmit a plurality of PUSCHs and PUCCHs simultaneously but the total transmission power exceeds the maximum transmission power, the terminal 200 may control (scale) the transmission power of the lower priority (PUSCH or PUCCH).

[0263] (4) Priority indication is not limited to the case where it is explicitly notified through DCI, but may be implicitly notified.

[0264] For example, the priority indication may be implicitly notified through a DCI format, RNTI, or a search space, and terminal 200 may determine the priority of the channel based on the DCI format, RNTI, or search space.

[0265] For example, in the case of DCI format, the terminal 200 may also determine, when receiving DCI in a DCI format for URLLC, that the priority of a channel allocated by the DCI is higher than the priority of a channel allocated by DCI in another DCI format.

[0266] In addition, for example, in the case of RNTI, when the detected RNTI is different from the C-RNTI, for example, in Rel.15, it is the MCS-RNTI for URLLC import or the RNTI for URLLC import, the terminal 200 can also determine that the priority of the channel allocated through the corresponding DCI is higher than the priority of the channel allocated through other DCI.

[0267] In addition, in the case of the search space, terminal 200 may determine the priority of the channel allocated by the DCI based on the search space number set in the search space in which the DCI is detected.

[0268] By implicitly notifying the priority indication (eg, the priority of the channel), the amount of signaling can be reduced.

[0269] In addition, the implicit notification method of the priority indication is not limited to these methods. For example, a parameter that allows the terminal 200 to determine the priority of a channel (for example, eMBB and URLLC) may be associated with the priority of the channel.

[0270] (5) In the above embodiments, the downlink control channel, downlink data channel, uplink control channel and uplink data channel are not limited to PDCCH, PDSCH, PUCCH and PUSCH, and may also be control channels with other names.

[0271] (6) The unit of time resources is not limited to the time resources described in the above embodiments (for example, time slots or sub-time slots), and may be other time resource units (for example, sub-frames or frames, etc.).

[0272] (7) Services with different request conditions are not limited to eMBB and URLLC, but may also be other services.

[0273] The present disclosure can be implemented by software, hardware or software in cooperation with hardware. Each functional block used in the description of the above-mentioned embodiment is partially or entirely implemented as an LSI (Large Scale Integration) as an integrated circuit, and each process described in the above-mentioned embodiment can also be partially or entirely controlled by an LSI or a combination of LSIs. LSI can be composed of individual chips, or it can be composed of a chip in a manner that includes part or all of the functional blocks. LSI can also include the input and output of data. LSI can also be called "IC (Integrated Circuit)", "System LSI (System LSI)", "Super LSI (Super LSI)", "Ultra LSI (Ultra LSI)" according to the different integration levels. The method of integrated circuitization is not limited to LSI, and can also be implemented by a dedicated circuit, a general-purpose processor or a dedicated processor. In addition, an FPGA (Field Programmable Gate Array) that can be programmed after LSI manufacturing, or a reconfigurable processor (Reconfigurable Processor) that can reconfigure the connection or setting of the circuit block inside the LSI can also be used. The present disclosure can also be implemented as digital processing or analog processing. Furthermore, if integrated circuit technology that replaces LSI emerges as semiconductor technology advances or other technologies are derived, it is of course possible to use this technology to achieve integration of functional blocks. There is also the possibility of applying biotechnology, etc.

[0274] The present disclosure can be implemented in all kinds of devices, equipment, and systems (collectively referred to as "communication devices") with communication functions. The communication device may also include a wireless transceiver and a processing / control circuit. The wireless transceiver may also include a receiving unit and a transmitting unit, or may perform the functions of these parts. The wireless transceiver (transmitting unit, receiving unit) may also include an RF (Radio Frequency) module and one or more antennas. The RF module may also include an amplifier, an RF modulator / demodulator, or a device similar to these. Non-limiting examples of communication devices include telephones (mobile phones, smart phones, etc.), tablet computers, personal computers (PCs) (laptops, desktops, notebook computers, etc.), cameras (digital cameras, digital video cameras, etc.), digital players (digital audio / video players, etc.), wearable devices (wearable cameras, smart watches, tracking devices, etc.), game consoles, e-book readers, telehealth / telemedicine (telehealth / prescription) devices, vehicles with communication functions or transportation vehicles (cars, airplanes, ships, etc.) and combinations of the above-mentioned various devices.

[0275] Communication devices are not limited to portable or mobile devices, but also include all kinds of devices, equipment, and systems that cannot be carried or fixed. For example, they include: smart home devices (home appliances, lighting equipment, smart meters or meters, control panels, etc.), vending machines, and all other "things" that can exist on the IoT (Internet of Things) network.

[0276] The communication includes data communication performed by a cellular system, a wireless LAN (Local Area Network) system, a communication satellite system, etc., and also includes data communication performed by a combination of these systems.

[0277] In addition, the communication device also includes devices such as controllers or sensors connected or linked to the communication equipment that performs the communication functions described in the present disclosure. For example, it includes a controller or sensor that generates a control signal or data signal used by the communication equipment that performs the communication functions of the communication device.

[0278] In addition, the communication device includes infrastructure equipment that communicates with the above-mentioned non-limiting various devices or controls the above-mentioned various devices, such as base stations, access points, and all other devices, equipment, and systems.

[0279] A terminal according to an embodiment of the present disclosure comprises: a control circuit, which determines a method for determining the priority of a first channel and a second channel whose resource allocation overlaps with each other in a time domain based on parameters related to control information indicating respective allocations of the first channel and the second channel; and a communication circuit, which sends or receives a signal for at least one of the first channel and the second channel based on the priority.

[0280] In a terminal of one embodiment of the present disclosure, the control circuit selects one of a first decision method and a second decision method based on the parameters, wherein the first decision method is a method of determining the priority based on notification information indicating the priority received from a base station, and the second decision method is a method of determining the priority based on the order in which the control information is received.

[0281] In a terminal of an embodiment of the present disclosure, the parameter includes information indicating resources corresponding to the control information, and when the resources corresponding to the control information are repeated in the time domain, the control circuit selects the first decision method.

[0282] In a terminal of an embodiment of the present disclosure, when resources corresponding to the control information are not repeated in the time domain, the control circuit selects the second decision method.

[0283] In a terminal of one embodiment of the present disclosure, the parameters include information representing resources corresponding to multiple beams that can be set for the control information, and when at least one control information in the control information is configured in one of the resources corresponding to the multiple beams, the control circuit selects the first decision method.

[0284] In a terminal of one embodiment of the present disclosure, the control circuit selects the second determination method when the following situation is not the case, that is, at least one of the control information is configured in one of the resources corresponding to the multiple beams respectively.

[0285] In a terminal of one embodiment of the present disclosure, the parameters include information representing resources corresponding to multiple spatial parameters that can be set for the control information, and when at least one control information in the control information is configured in one of the resources corresponding to the multiple spatial parameters, the control circuit selects the first determination method.

[0286] In a terminal of one embodiment of the present disclosure, the control circuit selects the second determination method when the following situation is not the case, that is, at least one of the control information is configured in one of the resources corresponding to the multiple spatial parameters respectively.

[0287] In a terminal of one embodiment of the present disclosure, the parameters include information representing resources corresponding to the control information. When the resources corresponding to the control information are repeated in the time domain, the control circuit determines the priority based on information related to at least one of the position and length of the resources corresponding to the control information in the time domain.

[0288] In a terminal of an embodiment of the present disclosure, when resources corresponding to the control information are not repeated in the time domain, the control circuit determines the priority based on the order in which the control information is received.

[0289] In a terminal of one embodiment of the present disclosure, when the priorities determined regarding the first channel and the second channel are the same, the control circuit determines the priority based on information related to at least one of the position and length in the time domain of the resources respectively corresponding to the control information.

[0290] In a terminal of one embodiment of the present disclosure, when the priorities determined regarding the first channel and the second channel are the same and the resources respectively corresponding to the control information are repeated in the time domain, the control circuit determines the priority based on information related to at least one of the position and length of the resources respectively corresponding to the control information in the time domain.

[0291] In a terminal of one embodiment of the present disclosure, when the priorities determined for the first channel and the second channel are the same and the resources corresponding to the control information respectively do not overlap in the time domain, the control circuit determines the priority based on the order in which the control information is received.

[0292] A communication method according to an embodiment of the present disclosure includes the following steps: a method for determining the priority of a first channel and a second channel whose resource allocation overlaps with each other in a time domain based on parameters related to control information indicating respective allocations of the first channel and the second channel; and sending or receiving a signal for at least one of the first channel and the second channel based on the priority.

[0293] The disclosures of the specifications, drawings, and abstracts contained in U.S. Provisional Application No. 62 / 839,128 filed on April 26, 2019 and Japanese Patent Application No. 2019-089057 filed on May 9, 2019 are all incorporated herein by reference.

[0294] Industrial Applicability

[0295] One embodiment of the present disclosure is useful for a mobile communication system.

Claims

1. A communication device comprising: a receiver that receives first downlink control information and second downlink control information, wherein the first downlink control information indicates allocation of a first channel and the second downlink control information indicates allocation of a second channel; and a transceiver, transmitting or receiving at least one of the first channel and the second channel based on a first priority value of the first channel and a second priority value of the second channel, in, The value of the first priority is determined according to a priority parameter of the first downlink control information, and the value of the second priority is determined according to the second downlink control information not including the priority parameter, In a case where the value of the first priority is a smaller value among the values ​​of the plurality of priorities, the value of the priority of the first channel is the same as the value of the priority of the second channel.

2. The communication device according to claim 1, wherein: When the transmission of the first channel having a large priority value overlaps in time with the transmission of the second channel having a small priority value, the circuit cancels the transmission of the second channel.

3. The communication device according to claim 1, wherein: In the case where the priority parameter indicates a large value of the priority and the transmission of the first channel overlaps with the transmission of the second channel in time, the circuit cancels the transmission of the second channel.

4. The communication device according to claim 1, wherein: The values ​​of the plurality of priorities are two values.

5. The communication device according to claim 1, wherein: The first channel is a physical uplink shared channel, namely, PUSCH, and the second channel is a physical uplink control channel, namely, PUCCH. When the transmission of the first channel having a large priority value overlaps in time with the transmission of the second channel having a small priority value, the circuit cancels the transmission of the second channel.

6. The communication device according to claim 1, wherein: The first channel and the second channel are physical uplink control channels, namely, PUCCHs, When the transmission of the first channel having a large priority value overlaps in time with the transmission of the second channel having a small priority value, the circuit cancels the transmission of the second channel.

7. The communication device according to claim 1, wherein: The first channel and the second channel are physical uplink control channels, namely, PUCCHs, When transmission of the first channel having a large priority value overlaps in time with transmission of the second channel having a small priority value, the circuit transmits first HARQ-ACK information of the first channel and second HARQ-ACK information of the second channel in the first channel.

8. The communication device according to claim 1, wherein: The first channel is a physical uplink shared channel, namely, PUSCH, and the second channel is a physical uplink control channel, namely, PUCCH. When transmission of the first channel having a large priority value overlaps in time with transmission of the second channel having a small priority value, the circuit transmits first HARQ-ACK information of the first channel and second HARQ-ACK information of the second channel in the first channel.

9. A communication method, comprising: receiving first downlink control information and second downlink control information, the first downlink control information indicating allocation of a first channel, the second downlink control information indicating allocation of a second channel; as well as transmitting or receiving at least one of the first channel and the second channel based on a value of a first priority of the first channel and a value of a second priority of the second channel, in, The value of the first priority is determined according to a priority parameter of the first downlink control information, and the value of the second priority is determined according to the second downlink control information not including the priority parameter, In a case where the value of the first priority is a smaller value among the values ​​of the plurality of priorities, the value of the priority of the first channel is the same as the value of the priority of the second channel.

10. The communication method according to claim 9, wherein: When the transmission of the first channel having a large priority value and the transmission of the second channel having a small priority value overlap in time, the transmission of the second channel is canceled.

11. The communication method according to claim 9, wherein: In a case where the priority parameter indicates a large value of the priority and the transmission of the first channel overlaps with the transmission of the second channel in terms of time, the transmission of the second channel is canceled.

12. The communication method according to claim 9, wherein: The values ​​of the plurality of priorities are two values.

13. The communication method according to claim 9, wherein: The first channel is a physical uplink shared channel, namely, PUSCH, and the second channel is a physical uplink control channel, namely, PUCCH. When the transmission of the first channel having a large priority value and the transmission of the second channel having a small priority value overlap in time, the transmission of the second channel is canceled.

14. The communication method according to claim 9, wherein: The first channel and the second channel are physical uplink control channels, namely, PUCCHs, When the transmission of the first channel having a large priority value and the transmission of the second channel having a small priority value overlap in time, the transmission of the second channel is canceled.

15. The communication method according to claim 9, wherein: The first channel and the second channel are physical uplink control channels, namely, PUCCHs, When transmission of the first channel having a large priority value and transmission of the second channel having a small priority value overlap in time, first HARQ-ACK information of the first channel and second HARQ-ACK information of the second channel are transmitted in the first channel.

16. The communication method according to claim 9, wherein: The first channel is a physical uplink shared channel, namely, PUSCH, and the second channel is a physical uplink control channel, namely, PUCCH. When transmission of the first channel having a large priority value overlaps in time with transmission of the second channel having a small priority value, the circuit transmits first HARQ-ACK information of the first channel and second HARQ-ACK information of the second channel in the first channel.

17. A base station comprising: a transmitter that transmits first downlink control information and second downlink control information, wherein the first downlink control information indicates allocation of a first channel and the second downlink control information indicates allocation of a second channel; and a receiver that receives at least one of the first channel and the second channel based on a first priority value of the first channel and a second priority value of the second channel, in, The value of the first priority is determined according to a priority parameter of the first downlink control information, and the value of the second priority is determined according to the second downlink control information not including the priority parameter, In a case where the value of the first priority is a smaller value among the values ​​of the plurality of priorities, the value of the priority of the first channel is the same as the value of the priority of the second channel.

18. A communication method comprising: sending first downlink control information and second downlink control information, the first downlink control information indicating allocation of a first channel, the second downlink control information indicating allocation of a second channel; and receiving at least one of the first channel and the second channel based on a value of a first priority of the first channel and a value of a second priority of the second channel, in, The value of the first priority is determined according to a priority parameter of the first downlink control information, and the value of the second priority is determined according to the second downlink control information not including the priority parameter, In a case where the value of the first priority is a smaller value among the values ​​of the plurality of priorities, the value of the priority of the first channel is the same as the value of the priority of the second channel.

19. An integrated circuit comprising: A receiving circuit receives first downlink control information and second downlink control information, wherein the first downlink control information indicates allocation of a first channel and the second downlink control information indicates allocation of a second channel; as well as The transmitting circuit controls the transmission of at least one of the first channel and the second channel based on the value of the first priority of the first channel and the value of the second priority of the second channel, in, The value of the first priority is determined according to a priority parameter of the first downlink control information, and the value of the second priority is determined according to the second downlink control information not including the priority parameter, In a case where the value of the first priority is a smaller value among the values ​​of the plurality of priorities, the value of the priority of the first channel is the same as the value of the priority of the second channel.

20. An integrated circuit comprising: A sending circuit, sending first downlink control information and second downlink control information, wherein the first downlink control information indicates allocation of a first channel, and the second downlink control information indicates allocation of a second channel; as well as The transmitting circuit controls the transmission of at least one of the first channel and the second channel based on the value of the first priority of the first channel and the value of the second priority of the second channel, in, The value of the first priority is determined according to a priority parameter of the first downlink control information, and the value of the second priority is determined according to the second downlink control information not including the priority parameter, In a case where the value of the first priority is a smaller value among the values ​​of the plurality of priorities, the value of the priority of the first channel is the same as the value of the priority of the second channel. The receiving circuit controls receiving at least one of the first channel and the second channel based on a first priority value of the first channel and a second priority value of the second channel, in, The value of the first priority is determined according to a priority parameter of the first downlink control information, and the value of the second priority is determined according to the second downlink control information not including the priority parameter, In a case where the value of the first priority is a smaller value among the values ​​of the plurality of priorities, the value of the priority of the first channel is the same as the value of the priority of the second channel.

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