Terminal, radio communication method for a terminal and base station

Abstract

The present invention is designed so that UL signals are transmitted appropriately in response to the receipt of predetermined DL signals even when the processing time in base radio stations and / or user terminals is reduced. According to one aspect of the present invention, a user terminal has a receiving section that receives a DL signal, and a control section that controls the transmission of a UL signal in response to the DL signal based on timing advance, and the control section exerts control so that, regardless of the timing advance value, the UL signal is transmitted on the UL resource that is located at a predetermined time after the timing at which the DL signal is received.

Description

1 / 58 TERMINAL, RADIO COMMUNICATION METHOD FOR A TERMINAL AND BASE STATION FIELD OF TECHNIQUE

[001] The present invention relates to a user terminal and a method of radio communication in next-generation mobile communication systems. BACKGROUND OF THE TECHNIQUE

[002] In the UMTS (Universal Mobile Telecommunications System) network, Long Term Evolution (LTE) specifications have been drafted with the purpose of further increasing high-speed data rates, providing lower latency, and so forth (see Non-patent Literature 1). In addition, for further broadbandization and increased speed beyond LTE, LTE successor systems (e.g., LTE-A (LTE Advanced), FRA (Future Radio Access), 4G, 5G, 5G+ (more), NR (New RAT), LTE Version 14, LTE Version 15 and / or later versions) are under study.

[003] In existing LTE systems (e.g., LTE Versions 8 to 13), downlink (DL) and / or uplink (UL) communication are performed using 1 ms transmission time intervals (TTIs) (also referred to as subframes, etc.). This 1 ms TTI is the unit of time for transmitting a channel-encoded data packet, and serves as the processing unit, for example, in scheduling, link adaptation, retransmission control (HARQ (Hybrid Automatic Repeat Request)), and so on.

[004] Additionally, in existing LTE systems (e.g., LTE Ver. 8 to 13), frequency division duplex (FDD) and time division duplex (TDD) are supported as duplex schemes. FDD is a scheme for assigning different frequencies between DL and UL, and is also called Petition 870200156790, dated 12 / 14 / 2020, page 10 / 70 2 / 58 “frame structure (FS) type 1 (FS 1).” TDD is a scheme for switching between DL and UL over time on the same frequency, and is also called “frame structure type 2 (FS 2)”. In TDD, communication is conducted based on UL / DL configurations, which define the formats of UL subframes and DL subframes in radio frames.

[005] Additionally, in existing LTE systems (e.g., LTE Ver. 8 to 13), the timing for transmitting retransmission control information (e.g., an ACK (Acknowledgment) or a NACK (Negative Acknowledgment), also referred to as “A / N”, “HARQ-ACK”, and so on) in response to a shared DL channel (e.g., PDSCH (Physical Downlink Shared Channel), hereinafter also referred to as “PDSCH”) is controlled assuming that the reference value for the transmission timing is fixed at 4 ms, taking into account the signal processing time (processing time) in user terminals and / or base radio stations.

[006] For example, in FDD in existing LTE systems (e.g., LTE Ver. 8 to 13), when a PDSCH is received in subframe #n, an A / N is transmitted (feedback) in response to that PDSCH in subframe #n+4, assuming that the processing time of the PDSCH and / or similar at a user terminal is 4 ms. Furthermore, in TDD, when a PDSCH is received in DL subframe #n, an A / N is transmitted in response to that PDSCH in subframe #n+4 or a later subframe, assuming that the processing time of the PDSCH and / or similar at a user terminal is 4 ms.

[007] Similarly, in existing LTE systems (e.g., LTE Ver. 8 to 13), the timing to transmit an A / N (also referred to as “UL HARQ timing” and / or similar) in response to a channel Petition 870200156790, dated 12 / 14 / 2020, page 11 / 70 3 / 58 shared UL (e.g., PUSCH (Uplink Shared Physical Channel), hereinafter also referred to as “PUSCH”) is also controlled by setting the reference value for signal transmission timing on user terminals and / or base radio stations at 4 ms.

[008] Furthermore, in existing LTE systems, when downlink control information that schedules a PUSCH (UL grant) is received in subframe #n, the PUSCH is transmitted in subframe #n+4 assuming that the processing time of the PUSCH and / or similar on a user terminal is equivalent to 4 ms. LIST OF CITATIONS Non-patented literature

[009] Non-patent Literature 1: 3GPP TS36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April, 2010 SUMMARY OF THE INVENTION Problem of the Technique

[0010] In order to reduce latency in future radio communication systems (e.g., NR), research is underway to reduce signal processing time in base stations and / or UEs. However, the use of conventional transmission timing determination methods to determine scaling timings and / or HARQ timings, such as those described above, based on subframe indices, in a fixed mode, in future radio communication systems, may cause a decrease in spectral efficiency, a decrease in communication throughput, and so on, especially when processing time is reduced. Petition 870200156790, dated 12 / 14 / 2020, page 12 / 70 4 / 58

[0011] The present invention was produced with a view to what has been mentioned above, and it is therefore an object of the present invention to provide a user terminal and a radiocommunication method through which, even when the processing time in base radio stations and / or user terminals is reduced, UL signals can be transmitted in an appropriate manner in response to the reception of predetermined DL signals. SOLUTION TO THE PROBLEM

[0012] According to one aspect of the present invention, a user terminal has a receiving section that receives a DL signal, and a control section that controls the transmission of a UL signal in response to the DL signal based on timing advance, and the control section exerts control so that, regardless of the timing advance value, the UL signal is transmitted on the UL feature that is located at a predetermined time after the timing at which the DL signal is received. ADVANTAGEOUS EFFECTS OF THE INVENTION

[0013] According to the present invention, even when the processing time in radio base stations and / or user terminals is reduced, UL signals can be transmitted adequately in response to the reception of predetermined DL signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a diagram to show an example of the timing for transmitting an A / N in FDD; Figures 2A and 2B are diagrams to show examples of scheduling / HARQ timings in existing LTE; Figures 3A and 3B are diagrams to show examples of timing of Petition 870200156790, dated 12 / 14 / 2020, page 13 / 70 5 / 58 scheduling / HARQ when processing time is reduced; Figure 4 is a diagram to show an example of a first aspect; Figure 5 is a diagram to show an example of a second aspect; Figure 6 is a diagram to show an alternative example of the second aspect; Figure 7 is a diagram to show an example, in which a portion of the scheduling / HARQ timing information is compatible with a scheduling / HARQ timing that is based on an existing transmission timing determination method; Figure 8 is a diagram to show an example of a schematic structure of a radio communication system, according to an embodiment of the present invention; Figure 9 is a diagram to show an example of a general structure of a radio base station, according to an embodiment of the present invention; Figure 10 is a diagram to show an example of a functional structure of a radio base station according to an embodiment of the present invention; Figure 11 is a diagram to show an example of a general structure of a user terminal, according to an embodiment of the present invention; Figure 12 is a diagram to show an example of a functional structure of a user terminal, according to an embodiment of the present invention; and Figure 13 is a diagram to show an example of a hardware structure of a base radio station and a user terminal according to an embodiment of the present invention. Petition 870200156790, dated 12 / 14 / 2020, page 14 / 70 6 / 58 DESCRIPTION OF THE MODALITIES

[0015] In existing LTE systems (e.g., LTE Ver. 8 to 13), a user terminal (UE: User Equipment) receives and / or transmits data based on downlink control information (DCI) (also referred to as “scheduling DCI”) that is transmitted from a base station (eNB: eNode B). For example, DCI that schedules DL data may be referred to as “DL assignment (DL grant)”, and DCI for scheduling UL data may be referred to as “UL grant”.

[0016] The UE exerts control in order to transmit a predetermined UL signal in response to a predetermined DL signal transmitted from the base station. For example, in existing LTE systems, hybrid automatic repeat request (HARQ) is supported in order to reduce the deterioration of communication quality between the UE and the base station.

[0017] Based on the result of receiving a PDSCH (such as the decoding result) transmitted from the base station, the UE transmits an A / N in response to the PDSCH using a PUSCH or a PUCCH. The base station controls the transmission of the PDSCH (which includes initial transmission and / or retransmission) based on the UE's A / N.

[0018] In the DL and / or UL (hereinafter referred to as “DL / UL”) of existing LTE systems, the transmission timing (also referred to as “DL / UL HARQ timing” or simply “HARQ timing”) is controlled based on a predefined transmission timing reference value, so that an A / N is transmitted at a predetermined time after a subframe in which data (PDSCH or PUSCH) is transmitted or received. For example, in FDD, when a PDSCH is received in a subframe, an A / N in response to that PDSCH is transmitted in the subframe 4 ms after the subframe in which the PDSCH was received. Petition 870200156790, dated 12 / 14 / 2020, page 15 / 70 7 / 58

[0019] Figure 1 is a diagram to show an example of the timing for transmitting an A / N in FDD. As shown in Figure 1, in FDD, when a UE receives a PDSCH in subframe #n, the UE transmits an A / N in response to the PDSCH to the base station 4 ms later, in subframe #n+4. If the A / N is received in subframe #n+4, normally the base station retransmits the HARQ process or makes an initial transmission, in or after subframe #n+8, which is the subframe 4 ms after subframe #n+4 (or it may be performed before subframe #n+8).

[0020] In addition, the UE controls the transmission timing (also called “scheduling timing”) so that, at a predetermined time period after a subframe in which DCIs (UL grants) transmitted from the base station are received, transmission using PUSCH occurs on the resource specified (scheduled) by the DCIs. Based on the PUSCH reception result, the base station transmits an A / N in response to the PUSCH using, for example, a retransmission control channel (e.g., a PHICH (Hybrid ARQ Indicator Physical Channel)). The UE controls the PUSCH transmission (which includes initial transmission and / or retransmission) based on the base station's A / N.

[0021] To summarize what has been mentioned above, according to FS 1 (FDD) for existing LTE systems, when an UE detects a DL assignment for DL ​​data in subframe #n, the UE transmits a HARQ-ACK in response to the DL data in subframe #n+4. Furthermore, if the UE detects a UL grant for UL data in subframe #n, the UE transmits that UL data in subframe #n+4.

[0022] However, according to FS 2 (TDD) for existing LTE systems, when the UE detects a DL assignment for DL ​​data in subframe #n, the UE transmits a HARQ-ACK in response to the DL data in subframe #n+k. Petition 870200156790, dated 12 / 14 / 2020, p. 16 / 70 8 / 58 Furthermore, when the UE detects a UL grant for UL data in subframe #n, the UE transmits that UL data in subframe #n+k.

[0023] In this document, the value of k is 4 or more, and is determined based on the TDD UL / DL configuration and subframe index #n where DCIs are received. In FS 2, assuming that the PDSCH / PUSCH processing time in UE is equivalent to that in FS 1, an A / N in response to a PDSCH is transmitted in a UL subframe 4 ms or more after the subframe where the PDSCH was received.

[0024] As described above, in existing LTE systems (Ver. 13 or older versions), scaling timings, HARQ transmission timings, and so on are controlled with fixed values, based on 4 ms (used as a reference value).

[0025] Incidentally, in future radio communication systems (e.g., NR), UEs may have different processing capabilities. Some UEs may support signal processing with shorter processing latencies.

[0026] For example, a UE can support autonomous operations. In this document, an autonomous operation may refer to, for example, an operation that receives a predetermined DL signal (e.g., a data signal) at a predetermined time (e.g., a subframe, a slot, and / or similar) and finishes transmitting (feedbacking) a UL signal (e.g., a HARQ-ACK) based on the DL signal. That is, a UE that supports an autonomous operation is likely to have high processing capabilities.

[0027] Therefore, if a UE supporting an autonomous operation detects a DL assignment for DL ​​data in subframe #n, the UE can transmit a HARQ-ACK in response to the DL data in the same subframe #n. Furthermore, upon detecting a UL grant for UL data in subframe #n, the Petition 870200156790, dated 12 / 14 / 2020, page 17 / 70 9 / 58 The EU can transmit UL data in subframe #n.

[0028] However, another UE might require a slightly longer processing time. For example, if that other UE detects a DL assignment for DL ​​data in subframe #n, the UE might transmit a HARQ-ACK in response to the DL data in the same subframe #n+k. Additionally, upon detecting a UL grant for UL data in subframe #n, the UE might transmit that UL data in subframe #n+k. In this document, the value of k can vary between a plurality of UEs, and for example, k=4, k=3, and other values ​​can be used.

[0029] Therefore, conventional transmission timing determination methods for determining staging timings and / or HARQ timings (hereinafter also referred to simply as “staging timings / HARQ”) based on subframe indices, as described above, may not work well in future radio communication systems.

[0030] Furthermore, conventional methods of determining fixed transmission timings can lead to a problem where it is difficult to support high timing advance (TA) values, especially when the processing time in UEs is short. TA is a process that is used to adjust the timing to receive UL signals on the base station side. UL transmission from UEs can be shifted so as to precede DL subframe timings, based on TA information indicated by the base station.

[0031] Note that, in existing LTE systems, TA information (TA values) is provided, for example, in the MAC PDU (Media Access Control Protocol Data Unit) for random access response, a predetermined MAC control element (CE) reported in the PDSCH (Channel). Petition 870200156790, dated 12 / 14 / 2020, page 18 / 70 10 / 58 Shared Physical Downlink.

[0032] Next, the above problem will be explained below with reference to Figures 2 and 3. Figures 2A and 2B are diagrams to show examples of scheduling / HARQ timings in existing LTE.

[0033] Figure 2A shows an example with TA=0. A UE needs to perform the receive process (Rx proc.) for DL ​​signals and the transmit process (Tx proc.) for UL signals (e.g., HARQ-ACK) within 3 ms from subframe #n, where a DL signal (e.g., a UL grant) is received, until the beginning of subframe #n+4, which is the transmission subframe. Furthermore, the base station needs to perform the UL signal receive process and the DL signal transmit process within 3 ms from subframe #n+4, where a UL signal is received, until the beginning of subframe #n+8, where data is transmitted / retransmitted.

[0034] Figure 2B shows an example where TA is the maximum value (approximately 0.667 ms (which is equivalent to the propagation delay when the cell radius is approximately 100 km)). The UE needs to perform the DL signal reception process and the UL signal transmission process within approximately 2.33 ms (3 ms to 0.667 ms) from subframe #n, where a DL signal is received, to the beginning of subframe #n+4, which is the transmission subframe. Furthermore, the base station needs to perform the UL signal reception process and the DL signal transmission process in approximately 3.66 ms (3 ms + 0.667 ms) from subframe #n+4, where a UL signal is received, to the beginning of subframe #n+8, where the data is transmitted / retransmitted.

[0035] Thus, when TA becomes larger, the UE has less headroom to process latency. Some UEs may not have the capacity to perform timely processing, and may not have the capacity to transmit UL signals in Petition 870200156790, dated 12 / 14 / 2020, page 19 / 70 11 / 58 desired timings. In this case, a decrease in spectral efficiency, a decrease in communication transfer rate, and similar problems may occur.

[0036] However, it may be possible to reserve processing time in the UE by limiting the TA value. However, limiting the TA value may lead to limited cell coverage, and a decrease in spectral efficiency, a decrease in communication throughput, and similar problems may occur.

[0037] Furthermore, NR is being studied to shorten the signal processing time in base stations and / or UEs in order to reduce latency. In this case, for example, the scaling / HARQ timings can be controlled based on a reference value (e.g., 3 ms) that is less than 4 ms.

[0038] Figures 3A and 3B are diagrams to show examples of scaling / HARQ timings where processing time is reduced. Figure 3A shows an example with TA=0. As in the example shown in Figure 2, a UE needs to perform the DL signal reception process and the UL signal transmission process within 2 ms from subframe #n, where a DL signal is received, until the beginning of subframe #n+3, which is the transmission subframe. Furthermore, the base station needs to perform the UL signal reception process and the DL signal transmission process within 2 ms from subframe #n+3, where a HARQ-ACK is received, until the beginning of subframe #n+6, where the data is transmitted / retransmitted.

[0039] Figure 3B shows an example where TA is the maximum value (approximately 0.667 ms (which is equivalent to the propagation delay when the cell radius is about 100 km)). The UE needs to perform the process of Petition 870200156790, dated 12 / 14 / 2020, page 20 / 70 12 / 58 Receiving a DL signal and transmitting a UL signal within approximately 1.33 ms (2 ms to 0.667 ms) from subframe #n, where a DL signal is received, to the beginning of subframe #n+3, which is the transmission subframe. Additionally, the base station needs to receive a UL signal and transmit a DL signal within approximately 2.66 ms (2 ms + 0.667 ms) from subframe #n+3, where a HARQ-ACK is received, to the beginning of subframe #n+6, where the data is transmitted / retransmitted.

[0040] Furthermore, in both LTE and NR, study is underway to make TTIs a shorter time unit (e.g., a slot, a mini slot, a sub slot, a reduced TTI (sTTI), etc.), not a subframe. Such a short time unit could be termed a “TTI (short TTI) which is shorter than a 1ms subframe (TTI)”. When TTIs become shorter, the processing time available to the UE also becomes shorter, and therefore the problems mentioned above can become even more serious.

[0041] Note that a TTI may represent the time unit for use when transmitting / receiving transport blocks to transmit / receive data, code blocks and / or codewords. When a TTI is provided, the time period (e.g., the number of symbols) in which transport blocks, code blocks and / or codewords are actually mapped may be shorter than the TTI.

[0042] For example, when a TTI is formed with a predetermined number of symbols (e.g., fourteen symbols), transport blocks, code blocks, and / or transmission / receive data codewords can be transmitted and received in one or a predetermined number of symbol periods. If the number of symbols of Petition 870200156790, dated 12 / 14 / 2020, p. 21 / 70 13 / 58 transport blocks, code blocks and / or code words for transmission / reception are less than the number of symbols that constitute a TTI, reference signals, control signals and so on may be mapped to symbols in the TTI where none of the data is mapped.

[0043] Therefore, the present inventors investigated a method for appropriately controlling the transmission of UL signals in response to predetermined DL signals, assuming that the processing time in base stations and / or UEs is shorter than in existing LTE systems, and arrived at the present invention. According to one aspect of the present invention, even when the processing time in UEs is short, it is still possible to perform UL transmission at appropriate timings without limiting the TA value.

[0044] Next, embodiments of the present invention will be described in detail below. Each embodiment can be applied to FDD and / or TDD.

[0045] In the following description, a predetermined time unit (e.g., a subframe, a slot, a mini-slot, an sTTI, and / or similar) will be referred to as a TTI. A TTI may be specified by a predetermined index (e.g., a subframe index, a slot index, a mini-slot index, an sTTI index, etc.). Note that a TTI may be referred to as a long TTI, or it may be referred to as a short TTI. (First Aspect)

[0046] According to the first aspect of the present invention, regardless of the TA value, a UE judges that the first timing that a UL resource is available in a predetermined period after a predetermined downlink signal is received (or based on the timing that a predetermined downlink signal is received) is the scheduling / HARQ timing. In this document, the period Petition 870200156790, dated 12 / 14 / 2020, page 22 / 70 The predetermined 14 / 58 can be referred to as "minimum processing time," "minimum required processing time," "downlink processing time," "terminal processing time," and so on.

[0047] In other words, the UE determines the scheduling / HARQ timing based on the time gap from receiving a predetermined downlink signal to transmitting an uplink signal, rather than selecting, in a fixed way, the TTI a predetermined number of indices after the TTI index where the predetermined downlink signal was received (i.e., the TTI index of the related UL subframe).

[0048] For example, the UE may decide that the UL transmission timing is the time that arrives at a predetermined later period, based on the timing at which DCIs (UL grants) are received, regardless of the TA value. Additionally, the UE may decide that the HARQ transmission timing is the time that arrives at a predetermined later period, based on the timing at which a downlink data signal (e.g., a PDSCH) is received, regardless of the TA value. If the time that arrives at a predetermined later period is in the middle of a TTI, the UE may decide that the next TTI (or a subsequent TTI) after the predetermined period is the UL transmission timing.

[0049] Note that the expression “based on a receive (transmission) timing”, as used in this document, can be read as “in relation to the end of a receive (transmission) TTI”, “in relation to the top of a receive (transmission) TTI”, “in relation to an arbitrary timing in a receive (transmission) TTI” or have other similar meanings. Petition 870200156790, dated 12 / 14 / 2020, page 23 / 70 15 / 58

[0050] Figure 4 is a diagram to show an example of the first aspect. In this example, the UE requires two or more TTIs for processing. Figure 4 shows the TTI indices.

[0051] When a UE receives a DL signal on TTI #n (#N+6), the UE maps the scaled data and / or HARQ feedback to the first available UL resource after a predetermined period (e.g., two TTIs) from the end-of-TTI timing (#n+6), and transmits the data and / or HARQ feedback.

[0052] For example, this UL feature could be the UL feature that corresponds to TTI #n+3 (#n+9) when TA is 0, the UL feature that corresponds to TTI #n+4 (#n+10) when TA is 0 or more and less than one TTI, or the UL feature that corresponds to TTI #n+5 (#n+11) when TA is one or more TTI and less than two TTIs.

[0053] Note that the predetermined period above can be defined to include the TTI time period in which the DL signal is received. For example, although in Figure 4 the predetermined period is defined relative to the end of TTI #n as the starting point, the timing at which TTI #n starts can be defined as the starting point.

[0054] Note that the above predetermined period can be configured individually for each cell, configured individually for each specific EU group, or configured individually for each EU, or the above predetermined period can be defined in the descriptive report.

[0055] Information about the predetermined period above may be reported using upper-layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC signaling, broadcast information (the MIB (Master Information Block), SIBs (System Information Blocks), etc.) or physical-layer signaling (e.g., DCI), or reported Petition 870200156790, dated 12 / 14 / 2020, page 24 / 70 16 / 58 combining them.

[0056] The UE can report information about possible predetermined periods to the network as UE capacity information. For example, this information could be information about the processing time of predetermined signals.

[0057] Furthermore, the predetermined period above, signaling related to the predetermined period, and / or UE capacity information related to the predetermined period do not need to be set to uniform values ​​in all cases, and different values ​​can be assigned depending on conditions. For example, large values ​​(e.g., one value for three TTIs) can be assigned when the number of MIMO (Multiple Input Multiple Output) space multiplexing (transmission) layers, the transport block size, the modulation and coding scheme (MCS), and the number of frequency resources (e.g., resource blocks) that are allocated are large; small values ​​(e.g., one value for two TTIs) can be assigned otherwise.

[0058] Furthermore, for example, a large value may be assigned when the number of symbols in a control resource set, where blind decoding is performed for a DL control channel (e.g., a PDCCH (Physical Downlink Control Channel)), is equal to or greater than a predetermined value, or a small value may be assigned otherwise. Additionally, for example, a large value may be used when the number of symbols in a UL transmission period (e.g., a PUCCH and / or PUSCH) is equal to or greater than a predetermined value, or a small value may be used otherwise. In this way, control can be exercised so that, in the case of a small packet size, low-latency timings are applied to Petition 870200156790, dated 12 / 14 / 2020, page 25 / 70 17 / 58 acceleration, and, when the packet size is large, the capacity is expanded while tolerating latency.

[0059] In addition, the predetermined period above, signaling related to the predetermined period and / or UE capacity information related to the predetermined period may be defined as a value of an integer multiple of the TTI duration that is configured on the terminal, defined as a value of an integer multiple of the OFDM symbol duration that the terminal uses in transmission or reception, or defined as a value of an integer multiple of the sampling frequency that the terminal uses in transmission or reception.

[0060] Next, differences between the method of determining a transmission timing based on a real time gap (the transmission timing determination method of the first aspect) and the method of determining a transmission timing based on a TTI (TTI index) (the existing LTE transmission timing determination method) will be described below. The “time gap,” used in the first aspect, refers to the actual processing time that a UE needs to prepare for staggered UL transmission, and TA is not included.

[0061] According to the existing transmission timing determination method, when staggered DCIs are detected in subframe #n, a UE performs staggered UL transmission in subframe #n+k. In this document, k can be a fixed value, can be configured by RRC, or can be indicated by the DCIs. In any case, the period of subframe k includes TA. Therefore, depending on the UE's processing capacity, the minimum value of k or the maximum value of TA is limited.

[0062] Meanwhile, with the transmission timing determination method, according to the first aspect, when the DCI of Petition 870200156790, dated 12 / 14 / 2020, page 26 / 70 18 / 58 staggering is detected in TTI #n, the UE performs staggered UL transmission in the TTI index that corresponds to the value obtained by rounding up (ceiling) “value n+k+TA” (all in TTI units). In this document, for example, k can be the minimum processing time, it can be a fixed value, it can be configured by RRC, or it can be indicated by DCI. In any case, regardless of the TA value, a processing time of k subframes is always guaranteed. In other words, the TTIs (TTI indices) where UL transmission occurs change depending on TA values.

[0063] In accordance with the first aspect described above, the maximum TA value and processing time can be managed separately. For example, in a predetermined cell, even if multiple UEs have different capacities regarding processing time and / or use different TTI durations, it is possible to allow all UEs in the cell to use large TA values ​​without problem. (Second Aspect)

[0064] According to a second aspect of the present invention, the UE determines scaling / HARQ timings based on dynamic commands by the DCIs. In this document, the DCIs received at TTI #n do not indicate TTI #n+k as the scaling / HARQ timing, but instead indicate the k-th TTI, which arrives at a predetermined later period (after a predetermined period) from the TTI where the DCIs were detected (received), and where a UL feature is available for HARQ-ACK feedback and / or scaling UL transmission.

[0065] For example, DCIs may include information to identify the kth TTI where a UL feature is available (the information may be termed “field”, “transmission timing information”, “scheduling timing / HARQ information”, and so on). Petition 870200156790, dated 12 / 14 / 2020, page 27 / 70 19 / 58

[0066] Figure 5 is a diagram to show an example of the second aspect. In this example, the UE requires two or more TTIs for processing.

[0067] When the UE receives a DL signal on TTI #n (#n+6), the UE maps the scaled data and / or HARQ feedback to the UL resource that corresponds to the TTI indicated in the DCI and that arrives after a predetermined period (e.g., two TTIs) from the end-of-TTI timing of #n (#n+6), and transmits the scaled data and / or HARQ feedback. As described with the first aspect, information about the predetermined period above can be reported to the UE, and the UE can use this information to select the UL resource.

[0068] As shown in Figure 5, transmission timing information can indicate how many TTIs there are from the TTI that arrives a predetermined period (two TTIs in this case) after the DCIs are detected (for example, transmission timing information can indicate that the transmission timing is at the first TTI (one TTI later), the second TTI (two TTIs later), and so on). In the example in Figure 5, the first, second, third, and fourth timings in the table can indicate one TTI later, two TTIs later, three TTIs later, and four TTIs later, respectively.

[0069] For example, assuming the UE receives DCI at TTI #n, if TA is 0 or more but less than one TTI, based on the DCI, the UE can consider TTI #n+3, which is located two TTIs after TTI #n, as the reference point, and transmit UL and / or HARQ data using the UL resources from TTI #n+4 to TTI #n+7, which arrive one TTI and four TTIs later, respectively.

[0070] When the UE receives the DCIs in TTI #n, for example, if the TA is one or more and less than two TTIs, based on the DCIs, the UE may consider TTI #n+4, which is located two TTIs after TTI #n, as the reference point, and Petition 870200156790, dated 12 / 14 / 2020, p. 28 / 70 20 / 58 transmit the UL and / or HARQ data using the UL resources from TTI #n+5 to TTI #n+8, which arrive one TTI and four TTIs later, respectively.

[0071] Note that the associations (table) between the fields (indices) contained in the DCI and the UL resource timings can be configured by upper-layer signaling (e.g., RRC signaling), or can be provided in the descriptive report. Furthermore, information about the predetermined period can be reported from the base station in the same way as the first aspect.

[0072] Figure 5 shows an example in which the field included in the DCI is two bits, but this is not limiting. This field can be one bit, or it can be three bits or more.

[0073] In addition, the timing of UL resources specified by the DCI may include the predetermined period above. For example, it is possible to configure a table where a predetermined period (e.g., two TTIs) is added to each timing provided in the table in Figure 5. In the example in Figure 5, the first, second, third, and fourth timings in the table may indicate three TTIs later, four TTIs later, five TTIs later, and six TTIs later, respectively (relative to the timing that the DCIs were received). In this case, it is not necessary to report the above information related to the predetermined period separately to the UE, and the UE can select the UL resources based on the DCIs and the table.

[0074] Furthermore, regarding ICDs containing the above field, it is only possible to include this field in ICDs that are detected in one or more EU-specific search areas, and not to include this field in ICDs that are detected in other EU-specific search areas, EU common search areas, or EU group search areas. When the EU detects ICDs that do not contain this field, the EU performs UL transmission in accordance with Petition 870200156790, dated 12 / 14 / 2020, page 29 / 70 21 / 58 these DCIs, but the transmission timing, in this case, can be a transmission timing that assumes a predetermined processing time (e.g., three TTIs).

[0075] In accordance with the second aspect described above, the same advantages as the first aspect can be expected. Furthermore, the transmission timing information reported in DCI in a dynamic way allows for flexible scheduling. (Alternative Examples of the First Aspect and Second Aspect)

[0076] In each of the aspects described above, the UE can decide that the scheduling / HARQ timing is at the same TTI as the TTI where a predetermined downlink signal is received. This is suitable for UEs that have the lowest processing time capacity.

[0077] In each aspect described above, the time duration of a period in which HARQ feedback and / or staggered transmission is performed does not need to be equal to the time duration of a period in which a predetermined downlink signal is received, and may be, for example, a shorter time duration or a longer time duration. This makes flexible resource utilization possible.

[0078] Figure 6 is a diagram to show an example of an alternative example of the second aspect. In this example, the UE can perform staggered transmission and / or send HARQ feedback on the same TTI as the TTI where a predetermined downlink signal was received. Figure 6 shows TTI indices.

[0079] When a UE receives a DL signal on a portion of the index #n (#n+6) resources, the UE maps staggered data and / or HARQ feedback to a UL resource that corresponds to the TTI indicated in the DCI and that arrives at a predetermined time or more after the timing of the receipt. Petition 870200156790, dated 12 / 14 / 2020, page 30 / 70 22 / 58 of the DL signal is completed. In Figure 6, the DCI field indicates the last UL resource on the same TTI as the TTI in which the DCIs are received or the subsequent TTI.

[0080] When the UE receives DCI at index #n (#n+6), for example, if TA is 0, the UE can transmit UL and / or HARQ data based on DCI, using the last UL feature at any TTI from #n (#n+6), which is the same TTI, to #n+3 (#n+9), which is three TTIs later.

[0081] When the UE receives the DCIs at index #n, for example, if the TA is 0 or more, but less than one TTI, the UE can transmit UL and / or HARQ data, based on the DCIs, and taking TA into account, using the last UL resource at any TTI from #n+1 (#n+7), which is the same TTI, to #n+4 (#n+10), which is three TTIs later.

[0082] Note that the UL feature for using HARQ scaling and / or transmission can be mapped to a position far from the end of a predetermined TTI, and can be mapped to the top of a predetermined TTI, for example. (Third Aspect)

[0083] Based on the aspects above, scheduling / HARQ timings can be determined so that processing time is reserved in UEs. However, scheduling / HARQ timings are affected by TA adjustment. For example, when the TA value is located at the boundary between two TTI-UL resources, an ambiguity is introduced in the scheduling / HARQ timing, and there is a possibility that the base station cannot accurately specify on which TTIs the UL signals are received.

[0084] Therefore, according to a third aspect, the base station reports to the UE that one of the methods for determining a transmission timing based on a TTI (TTI index) (method for determining Petition 870200156790, dated 12 / 14 / 2020, page 31 / 70 23 / 58 existing transmission timing) and the method of determining a transmission timing based on a real time gap (the method of determining transmission timing, according to the first or second aspect) must be used in order to prevent the above ambiguity from being introduced. The EU decides which method to use based on information reported from the base station.

[0085] This information can be reported using upper-layer signaling (e.g., RRC signaling) (aspect 3.1), it can be reported using DCI (aspect 3.2), or it can be reported using a combination of upper-layer signaling and DCI (aspect 3.3). <Aspecto 3.1>

[0086] When the existing transmission timing determination method is defined, the UE adjusts the TA in the same way as in existing LTE. That is, the TA is adjusted via message 2 (random access response), TAC (Time Advance Command) MAC CE, autonomous adjustment by the UE, and so on, in random access procedures.

[0087] If the method for determining transmission time based on a real time gap is defined, the UE adjusts the TA in an unambiguous manner (in accordance with at least one of (1) to (3) below): (1) The UE reports its own TA value or the monitored DL-UL time gap to the network using L1 uplink control information (UCI: Uplink Control Information), MAC CE, RRC signaling, and so on; (2) The UE does not autonomously adjust the TA; and (3) The TA value is indicated to the UE via physical layer signaling (e.g., TA information (TA indicator) included in DCI), MAC CE, and so on. Instead of indicating a relative value to the current TA value as in conventional LTE, the TA value may indicate the absolute TA value. In this Petition 870200156790, dated 12 / 14 / 2020, page 32 / 70 In the 24 / 58 case, the incompatibility of recognition between the base station and the UE due to failures in detecting TA commands can be resolved. <Aspecto 3.2>

[0088] If scheduling DCIs do not contain transmission timing information, as described in the second aspect, the UE may determine scheduling timings / HARQ based on the existing transmission timing determination method and, otherwise (when scheduling DCIs include the above information), the UE may determine scheduling timings / HARQ using the transmission timing determination method based on a real time gap.

[0089] In this case, the network can guarantee the acceptable range of TA values ​​for when scheduling information that does not contain scheduling timing / HARQ information is used in scheduling in UEs. <Aspecto 3.3>

[0090] According to the second aspect, one or more parts of the transmission timing information that are included in scheduling DCI may indicate scheduling / HARQ timings that are based on the existing transmission timing determination method.

[0091] Figure 7 is a diagram to show an example in which a portion of the scheduling / HARQ timing information is compatible with a scheduling / HARQ timing that is based on the existing transmission timing determination method. In Figure 7, when a predefined field in DCI shows 00, 01, or 10, the real-time gap-based transmission timing determination method Petition 870200156790, dated 12 / 14 / 2020, page 33 / 70 25 / 58 is used.

[0092] Meanwhile, if this field shows 11, control is exercised so that data feedback / HARQ is transmitted using the TTI UL feature that corresponds to #n+4, assuming #T is the TTI, a predetermined downlink signal is received, as when the existing transmission timing determination method is used.

[0093] In accordance with the third aspect described above, the UE can switch between the existing transmission timing determination method and the real-time gap-based transmission timing determination method, so that it is possible to prevent scheduling / HARQ timings from being inconsistent between UEs and base stations. (Alternative Examples)

[0094] Although, with the above aspects, UL transmission timings, which are specified by UL grants, have been exemplified as the scheduling timings to be controlled, the scheduling timings subject to control are by no means limited to these. For example, the scheduling timings to be controlled may include DL reception timings specified by DL grants, the timings of UL transmission reference signals (e.g., an uplink measurement reference signal (SRS (Sound Reference Signal)) that are triggered by DCIs, and so forth. (Radio Communication System)

[0095] Next, the structure of a radio communication system, according to the present embodiment, will be described below. In this radio communication system, each radio communication method, according to the Petition 870200156790, dated 12 / 14 / 2020, page 34 / 70 26 / 58 of the modes described above are employed. Note that the radiocommunication method, according to each mode, can be used alone or in combination.

[0096] Figure 8 is a diagram to show an example of a schematic structure of a radiocommunication system, according to an embodiment of the present invention. A radiocommunication system 1 may employ carrier aggregation (CA), wherein a plurality of fundamental frequency blocks (component carriers (CCs)), where the LTE system bandwidth (e.g., 20 MHz) constitutes a unit, is grouped into one, and / or may employ dual connectivity (DC), which uses a number of cell groups (CGs) that each includes one or more CCs. The radiocommunication system 1 may also be referred to as SUPER 3G, LTE-A (LTE-Advanced), IMT-Advanced, 4G, 5G, FRA (Future Radio Access), NR (New RAT: New Radio Access Technology), and so forth.

[0097] The radio communication system 1, shown in Figure 8, includes a base radio station 11 that forms a macrocell C1, and base radio stations 12a to 12c that form small cells C2, which are placed inside the macrocell C1 and are narrower than the macrocell C1. Additionally, user terminals 20 are placed in the macrocell C1 and in each small cell C2. A structure in which different numerologies are applied between cells and / or within cells may be adopted.

[0098] User terminals 20 can connect to both base radio station 11 and base radio stations 12. User terminals 20 can use macrocell C1 and small cells C2, which use different frequencies, simultaneously, via AC or DC. Furthermore, user terminals 20 can operate AC or DC using a plurality of cells. Petition 870200156790, dated 12 / 14 / 2020, page 35 / 70 27 / 58 (CCs) (for example, two or more CCs). Furthermore, user terminals can use licensed bandwidth CCs and unlicensed bandwidth CCs as a plurality of cells.

[0099] Furthermore, user terminal 20 can perform communication using time-division duplexing (TDD) or frequency-division duplexing (FDD) in each cell. A TDD cell and an FDD cell can be referred to as a “TDD carrier (frame configuration type 2)” and an “FDD carrier (frame configuration type 1), respectively.

[00100] Furthermore, in each cell (carrier), a single numerology may be employed, or a plurality of different numerologies may be employed. In this document, a numerology refers to frequency direction and time direction parameters, such as subcarrier spacing, symbol duration, cyclic prefix duration, subframe duration, and so on.

[00101] Between user terminals 20 and base radio station 11, communication can be conducted using a carrier with a relatively low frequency band (e.g., 2 GHz) and a narrow bandwidth (referred to, for example, as an “existing carrier,” a “legacy carrier,” and so on). However, between user terminals 20 and base radio stations 12, a carrier with a relatively high frequency band (e.g., 3.5 GHz, 5 GHz, 30 to 70 GHz, and so on) and a wide bandwidth can be used, or the same carrier as that used at base radio station 11 can be used. Note that the frequency band structure for use at each base radio station is by no means limited to these.

[00102] A structure may be employed in this document where the wired connection (e.g., means conforming to CPRI (Interface) Petition 870200156790, dated 12 / 14 / 2020, pp. 36 / 70 28 / 58 of Common Public Radio) such as fiber optics, the X2 interface and so on) or wireless connection is established between base radio station 11 and base radio station 12 (or between two base radio stations 12).

[00103] Base radio station 11 and base radio stations 12 are each connected to top station unit 30, and are connected to a core network 40 via top station unit 30. Note that top station unit 30 may be, for example, an access gateway unit, a radio network controller (RNC), a mobility management entity (MME), and so on, but is by no means limited to these. Additionally, each base radio station 12 may be connected to top station unit 30 via base radio station 11.

[00104] Note that base radio station 11 is a base radio station that has relatively wide coverage, and may be referred to as a “macro base station”, a “central node”, an “eNB (eNode)”, a “transmit / receive point”, and so on. Additionally, base radio stations 12 are base radio stations that have local coverage, and may be referred to as “small base stations”, “micro base stations”, “pico base stations”, “femto base stations”, “HeNBs (domestic eNodes)”, “RRHs (Remote Radio Headers)”, “transmit / receive points”, and so on. Hereafter, base radio stations 11 and 12 will be collectively referred to as “base radio stations 10”, unless otherwise specified.

[00105] User terminals 20 are terminals to support various communication schemes, such as LTE, LTE-A and so on, and can be either mobile communication terminals or stationary communication terminals. Furthermore, user terminals 20 can perform terminal-to-terminal (D2D) communication with other user terminals 20.

[00106] In radio communication system 1, regarding the schemes of Petition 870200156790, dated 12 / 14 / 2020, pp. 37 / 70 29 / 58 radio access, OFDMA (Orthogonal Frequency Division Multiple Access) can be applied to the downlink (DL), and SC-FDMA (Single Carrier Frequency Division Multiple Access) can be applied to the uplink (UL). OFDMA is a multi-carrier communication scheme for achieving communication by dividing a frequency bandwidth into a plurality of narrow frequency bandwidths (subcarriers) and mapping data to each subcarrier. SC-FDMA is a single-carrier communication scheme for mitigating interference between terminals by dividing the system bandwidth into bands formed with one or more continuous resource blocks per terminal, and allowing a plurality of terminals to use mutually different bands. Note that uplink and downlink radio access schemes are not limited to combinations thereof, and OFDMA can be used on the UL.

[00107] In radio communication system 1, a shared DL channel (PDSCH (Physical Downlink Shared Channel), which is also referred to, for example, as a “DL data channel”), which is used by each user terminal 20 in a shared manner, a broadcast channel (PBCH (Physical Broadcast Channel)), L1 / L2 control channels and so on are used as DL channels. User data, upper layer control information and SIBs (System Information Blocks) are communicated on the PDSCH. Additionally, the MIB (Master Information Block) is communicated on the PBCH.

[00108] The L1 / L2 control channels include DL control channels (a PDCCH (Downlink Physical Control Channel), an EPDCCH (Enhanced Downlink Physical Control Channel), and so on), a PCFICH (Control Format Indicator Physical Channel), a PHICH Petition 870200156790, dated 12 / 14 / 2020, pp. 38 / 70 30 / 58 (Hybrid ARQ Indicator Physical Channel) and so on. Downlink control (DCI) information, including PDSCH and PUSCH scheduling information, is communicated by the PDCCH. The number of OFDM symbols for use with the PDCCH is communicated by the PDCCH. The EPDCCH is frequency-division multiplexed with the PDSCH and used to communicate DCI and so on, as is the PDCCH. Retransmission control information (e.g., at least one A / N, NDI, HPN, redundancy version (RV) belonging to UL signals (e.g., the PUSCH) can be communicated using at least one of the PHICH, the PDCCH, and the EPDCCH.

[00109] In radio communication system 1, a shared UL channel (PUSCH: Uplink Shared Physical Channel, which is also referred to as “UL data channel” and so on), which is used by each user terminal 20 in a shared manner, a UL control channel (PUCCH: Uplink Physical Control Channel), a random access channel (PRACH: Random Access Physical Channel) and so on, are used as UL channels. User data, upper-layer control information and so on are communicated by the PUSCH. Uplink control information (UCI), which includes at least one of the following relay control information (e.g., A / N) that refers to DL signals (e.g., PDSCH), channel status information (CSI) and a scheduling request (SR) are communicated using the PUSCH or PUCCH.Through PRACH, random access preambles to establish connections with the cells are communicated. <Estação Rádio Base>

[00110] Figure 9 is a diagram to show an example of a general structure of a radio base station according to a modality of Petition 870200156790, dated 12 / 14 / 2020, pp. 39 / 70 31 / 58 present invention. A base radio station 10 includes a plurality of transmit / receive antennas 101, amplification sections 102, transmit / receive sections 103, a baseband signal processing section 104, a call processing section 105 and a communication path interface 106. It is noted that one or more transmit / receive antennas 101, amplification sections 102 and transmit / receive sections 103 may be provided.

[00111] User data to be transmitted from base radio station 10 to a user terminal 20 on the downlink is entered from the upstation device 30 to the baseband signal processing section 104, via the communication path interface 106.

[00112] In the baseband signal processing section 104, user data is subjected to transmission processes, which include a PDCP (Packet Data Convergence Protocol) layer process, splitting and coupling of user data, RLC (Radio Link Control) layer transmission processes, such as RLC retransmission control, MAC (Medium Access Control) retransmission control (e.g., a HARQ (Hybrid Automatic Repeat Request) transmission process), scheduling, transport format selection, channel coding, an inverse fast Fourier transform (IFFT) process and a pre-coding process, and the result is forwarded to each transmit / receive section 103.Furthermore, the DL control signals are also subjected to transmission processes, such as channel coding and an inverse fast Fourier transform, and routed to each transmission / reception section 103.

[00113] Baseband signals that are pre-coded and transmitted from the baseband signal processing section 104 on a per-antenna basis. Petition 870200156790, dated 12 / 14 / 2020, pp. 40 / 70 32 / 58 are converted into a radio frequency band in the transmit / receive sections 103 and then transmitted. The radio frequency signals that have undergone frequency conversion in the transmit / receive sections 103 are amplified in the amplification sections 102, and transmitted from the transmit / receive antennas 101.

[00114] The transmission / reception sections 103 may consist of transmitters / receivers, transmission / reception circuits or transmission / reception apparatus which may be described based on a general understanding of the field of the art to which the present invention relates. Note that a transmission / reception section 103 may be structured as a transmission / reception section in one entity, or may consist of a transmission section and a reception section.

[00115] However, regarding UL signals, the radio frequency signals received at the transmit / receive antennas 101 are each amplified in the amplification sections 102. The transmit / receive sections 103 receive the UL signals amplified in the amplification sections 102. The received signals are converted into the baseband signal through frequency conversion in the transmit / receive sections 103 and emitted to the baseband signal processing section 104.

[00116] In the baseband signal processing section 104, UL data that are included in the incoming UL signals are subjected to a Fast Fourier Transform (FFT) process, an Inverse Discrete Fourier Transform (IDFT) process, error correction decoding, a MAC retransmission control receive process, and RLC layer and PDCP layer receive processes, and forwarded to the higher station device 30 via the path interface of Petition 870200156790, dated 12 / 14 / 2020, pp. 41 / 70 33 / 58 communication 106. The call processing section 105 performs call processing (such as configuration and release of communication channels), manages the status of base radio stations 10 and manages radio resources.

[00117] The communication path interface section 106 transmits and receives signals to and from the higher station apparatus 30 via a predetermined interface. Additionally, the communication path interface 106 can transmit and / or receive signals (backhaul signaling) with other base radio stations 10 via an inter-base station interface (e.g., a CPRI (Common Public Radio Interface) compliant interface, such as fiber optics, the X2 interface, etc.).

[00118] Transmit / receive sections 103 can transmit DCI (DL assignment) that scales a shared DL channel (e.g., PDSCH), DCI (UL grant) that scales a shared UL channel (e.g., PUSCH), DL data (shared DL channel), and so on.

[00119] Transmit / Receive Sections 103 can receive retransmission control information (HARQ-ACK) pertaining to this shared DL channel. Additionally, Transmit / Receive Sections 103 can receive data on UL resources based on UL grants.

[00120] Transmission / Reception sections 103 can transmit information about a predetermined period (minimum processing time), transmission timing information, and so on. In addition, transmission / reception sections 103 can receive information about possible predetermined periods.

[00121] Figure 10 is a diagram to show an example of a functional structure of a radio base station, according to a modality. Petition 870200156790, dated 12 / 14 / 2020, pp. 42 / 70 34 / 58 of the present invention. Note that, although Figure 10 essentially shows functional blocks relating to characteristic parts of the present embodiment, the base radio station 10 has other functional blocks that are also necessary for radiocommunication. As shown in Figure 10, the baseband signal processing section 104 has a control section 301, a transmission signal generation section 302, a mapping section 303, a received signal processing section 304, and a measurement section 305.

[00122] Control section 301 controls the entire base radio station 10. Control section 301 controls, for example, the generation of DL signals via the transmission signal generation section 302, the mapping of DL signals via the mapping section 303, the receiving processes (e.g., demodulation) for UL signals via the received signal processing section 304, and the measurements via the measurement section 305.

[00123] Control section 301 can schedule the PUSCH and / or PDSCH to a user terminal 20. Control section 301 can control downlink control information (DCI) to schedule the PUSCH and / or PDSCH to be transmitted to user terminal 20.

[00124] In addition, control section 301 can control the timing advance (TA) for user terminal 20, or control the TA values ​​to be transmitted to user terminal 20. Control section 301 can report information to control user terminal 20 to transmit a UL signal, on the UL resource that is located at a predetermined time after the timing in which a DL signal is received, regardless of the TA value, to user terminal 20.

[00125] When the DL signal above is a data signal (PDSCH), the UL signal may be a HARQ-ACK in response to the data signal, or, if the signal of Petition 870200156790, dated 12 / 14 / 2020, pp. 43 / 70 35 / 58 DL above for DCI (UL grant) which scales the transmission of UL, the UL signal can be a data signal (PUSCH).

[00126] Preferably, the above predetermined period is determined taking into account the processing time in the UE. In addition, the above predetermined period can be configured individually for each cell and / or for each user terminal.

[00127] Control section 301 can report to user terminal 20 information to enable user terminal 20 to switch between a first method of transmitting a UL signal on the UL resource that is located at a predetermined time after the timing at which a DL signal is received, regardless of the TA value (the method of determining the transmission timing based on the real time gap (the method of determining the transmission timing, according to the first or second aspect)) and a second method of transmitting a UL signal at a timing based on a TTI index with reference to the timing at which a DL signal is received (the method of determining the transmission timing based on a TTI (TTI index) (the existing method of determining the transmission timing)).

[00128] Control section 301 may consist of a controller, a control circuit or a control apparatus which may be described based on a general understanding of the field of the art to which the present invention relates.

[00129] The transmission signal generation section 302 generates DL signals (which include DL data, DCI, UL data relay control information, upper layer control information, and so on) based on commands from the control section 301, and sends these signals to the mapping section 303. Petition 870200156790, dated 12 / 14 / 2020, pp. 44 / 70 36 / 58

[00130] For the transmission signal generation section 302, a signal generator, a signal generation circuit or a signal generation apparatus, which can be described based on a general understanding of the field of the art to which the present invention relates, can be used.

[00131] Based on commands from control section 301, mapping section 303 maps the DL signals (e.g., DL data, DCI, UL data relay control information, upper layer control information, and so on) generated by the transmission signal generation section 302 to predetermined radio resources, and transmits them to the transmission / receive section 103. For mapping section 303, a mapper, a mapping circuit, or a mapping device, which can be described based on common understanding of the field of the art to which the present invention relates, can be used.

[00132] The received signal processing section 304 performs the receiving process (e.g., demapping, demodulation, decoding, etc.) of UL signals (HARQ-ACK, PUSCH, etc.) transmitted from the user terminal 20. More specifically, the received signal processing section 304 can send the received signals, the signals after the receiving process, and so on, to the measurement section 305. In addition, the received signal processing section 304 performs the receiving process for the A / Ns in response to the DL signals, and sends ACKs or NACKs to the control section 301.

[00133] The measuring section 305 conducts measurements with respect to the received signals. The measuring section 305 may consist of a meter, a measuring circuit or a measuring apparatus which may be described based on a general understanding of the field of the art to which the present invention relates.

[00134] In addition, measurement section 305 can measure the quality of Petition 870200156790, dated 12 / 14 / 2020, pp. 45 / 70 37 / 58 channel in UL based, for example, on the received power (e.g., RSRP (Received Reference Signal Power)) and / or the received quality (e.g., RSRQ (Received Reference Signal Quality)) of UL reference signals. Measurement results can be sent to control section 301. <Terminal de Usuário>

[00135] Figure 11 is a diagram to show an example of a general structure of a user terminal, according to an embodiment of the present invention. The user terminal 20 includes a plurality of transmit / receive antennas 201 for MIMO (Multiple Input Multiple Output) transmission, amplification sections 202, transmit / receive sections 203, a baseband signal processing section 204 and an application section 205.

[00136] Radio frequency signals that are received at a plurality of transmit / receive antennas 201 are each amplified in the amplification sections 202. Each transmit / receive section 203 receives the DL signals amplified in the amplification sections 202. The received signals are subjected to frequency conversion and converted to the baseband signal in the transmit / receive sections 203, and transmitted to the baseband signal processing section 204.

[00137] In the baseband signal processing section 204, the incoming baseband signal undergoes an FFT process, error correction decoding, a retransmission control receive process, and so on. DL data is forwarded to the application section 205. The application section 205 performs processes related to the upper layers above the physical layer and the MAC layer, and so on. In addition, broadcast information is also forwarded to the section of Petition 870200156790, dated 12 / 14 / 2020, pp. 46 / 70 38 / 58 application 205.

[00138] However, UL data is entered from application section 205 to baseband signal processing section 204. Baseband signal processing section 204 performs a retransmission control transmission process (e.g., a HARQ transmission process), channel coding, rate matching, punching, a discrete Fourier transform (DFT) process, an IFFT process, and so on, and the result is forwarded to each transmit / receive section 203. UCI (e.g., at least one of DL, CSI, and SR retransmission control information) is also subjected to channel coding, rate matching, punching, DFT process, IFFT process, and so on, and forwarded to each transmit / receive section 203.

[00139] Baseband signals emitted from the baseband signal processing section 204 are converted into a radio frequency band in the transmit / receive sections 203 and transmitted. The radio frequency signals that undergo frequency conversion in the transmit / receive sections 203 are amplified in the amplification sections 202, and transmitted from the transmit / receive antennas 201.

[00140] Transmit / receive sections 203 can receive DCI (DL assignment) that scales a shared DL channel (e.g., PDSCH), DCI (UL grant) that scales a shared UL channel (e.g., PUSCH), DL data (shared DL channel), and so on.

[00141] Transmit / receive sections 203 can transmit retransmission control information (HARQ-ACK) that refers to the channel. Petition 870200156790, dated 12 / 14 / 2020, pp. 47 / 70 39 / 58 shared DL, following a 401 control section command. Additionally, the 203 transmit / receive section can transmit data on resources based on UL grants, following a 401 control section command.

[00142] The transmission / reception sections 203 can receive information about a predetermined period (minimum processing time), transmission timing information, and so on. In addition, the transmission / reception section 203 can transmit information about possible predetermined periods.

[00143] For the transmission / reception sections 203, transmitters / receivers, transmission / reception circuits or transmission / reception devices, which can be described based on common understanding of the field of the art to which the present invention relates, can be used. Furthermore, a transmission / reception section 203 can be structured as a transmission / reception section, or it can be formed with a transmission section and a reception section.

[00144] Figure 12 is a diagram to show an example of a functional structure of a user terminal according to an embodiment of the present invention. Note that although Figure 12 essentially shows functional blocks relating to characteristic parts of the present embodiment, the user terminal 20 has other functional blocks that are also necessary for radiocommunication. As shown in Figure 12, the baseband signal processing section 204, provided in the user terminal 20, has a control section 401, a transmission signal generation section 402, a mapping section 403, a received signal processing section 404 and a measurement section 405.

[00145] Control section 401 controls the entire user terminal 20. Control section 401 controls, for example, the generation of UL signals in the section Petition 870200156790, dated 12 / 14 / 2020, pp. 48 / 70 40 / 58 transmission signal generation 402, UL signal mapping in the mapping section 403, UL signal reception processes in the received signal processing section 404, measurements in the measurement section 405, and so on.

[00146] Control section 401 controls the reception of PDSCH and / or the transmission of PUSCH based on downlink control information (DCI) transmitted from base radio station 10. Control section 401 can control the transmission of UL signals in response to DL signals based on timing advance (TA). Furthermore, control section 401 can exert control so that, regardless of the TA value, a UL signal is transmitted on the UL resource located at a predetermined time after the timing at which a DL signal is received.

[00147] Note that if the DL signal above is a data signal (PDSCH), the UL signal may be a HARQ-ACK in response to the data signal, or if the DL signal above is DCI (UL grant) which scales the UL transmission, the UL signal may be a data signal (PUSCH).

[00148] Preferably, the predetermined period above is determined taking into account the processing time in the UE. For example, the predetermined period may be a period equal to the minimum terminal processing time, or it may be a period that adds an offset to the minimum terminal processing time (where the offset is, for example, the period that follows the minimum terminal processing time until the start of a new TTI). In addition, the predetermined period may be configured individually for each cell and / or for each user terminal.

[00149] Control section 401 can control the transmission timing of the above UL signal based on the timing information of Petition 870200156790, dated 12 / 14 / 2020, pp. 49 / 70 41 / 58 UL signal transmission included in DCI.

[00150] Control section 401 can exercise control to switch between a first method of transmitting a UL signal on the UL resource that is located at a predetermined time after the timing where a DL signal is received, regardless of the TA value (the transmission timing determination method based on the real time gap (the transmission timing determination method, according to the first or second aspect)) and a second method of transmitting a UL signal at a timing based on a TTI index with reference to the timing that a DL signal is received (the transmission timing determination method based on a TTI (TTI index) (the existing transmission timing determination method)).

[00151] The switching control described above, in control section 401, can be implemented based on information reported via upper-layer signaling (aspect 3.1), can be implemented based on DCI (aspect 3.2), or can be implemented via a combination of upper-layer signaling and DCI (aspect 3.3).

[00152] For control section 401, a controller, a control circuit or a control apparatus, which can be described based on a general understanding of the field of the art to which the present invention relates, can be used.

[00153] In the transmission signal generation section 402, UL signals (which include UL data signals, UCI, UL reference signals, UCI, and so on) are generated (including, for example, encoding, rate matching, punching, modulation, and so on) based on commands from the control section 401, and sent to the mapping section 403. For the transmission signal generation section 402, a signal generator, a circuit Petition 870200156790, dated 12 / 14 / 2020, pages 50 / 70 42 / 58 signal generation or a signal generation device, which can be described based on common understanding of the field of the art to which the present invention relates, can be used.

[00154] The mapping section 403 maps the UL signals generated in the transmission signal generation section 402 to radio resources based on commands from the control section 401, and sends the result to the transmission / receive sections 203. For the mapping section 403, a mapper, a mapping circuit or a mapping device, which can be described based on common understanding of the field of the art to which the present invention relates, can be used.

[00155] The received signal processing section 404 performs the receiving process (e.g., demapping, demodulation, decoding, and so on) of DL signals (DL data, DCI, upper layer control information, and so on). The received signal processing section 404 transmits the information received from base radio station 10 to the control section 401. The received signal processing section 404 transmits, for example, broadcast information, system information, upper layer control information related to upper layer signaling, such as RRC signaling, physical layer control information (L1 / L2 control information), and so on, to the control section 401.

[00156] The received signal processing section 404 may consist of a signal processor, a signal processing circuit, or a signal processing apparatus that may be described based on a general understanding of the field of the art to which the present invention relates. Additionally, the received signal processing section 404 may constitute the receiving section according to the present invention.

[00157] Measurement section 405 measures channel states based on signals. Petition 870200156790, dated 12 / 14 / 2020, pp. 51 / 70 Reference 43 / 58 (e.g., CRS and / or CSI-RS) from base radio station 10, and transmits the measurement results to control section 401.

[00158] The measuring section 405 may consist of a signal processor, a signal processing circuit or signal processing apparatus and a meter, a measuring circuit or measuring apparatus which may be described based on a general understanding of the field of the art to which the present invention relates. <Estrutura de Hardware >

[00159] Note that the block diagrams used to describe the above embodiments show blocks in functional units. These functional blocks (components) can be implemented in arbitrary combinations of hardware and / or software. Additionally, the means of deploying each functional block is not particularly limited. That is, each functional block can be obtained by a device part that is physically and / or logically aggregated, or it can be obtained by directly and / or indirectly connecting two or more physically and / or logically separate device parts (wired or wirelessly, for example) and using these multiple device parts.

[00160] That is, a base radio station, a user terminal, and so forth, according to one embodiment of the present invention, can function as a computer that executes the processes of the radiocommunication method of the present invention. Figure 13 is a diagram to show an example of a hardware structure of a base radio station and a user terminal, according to one embodiment of the present invention. Physically, the base radio stations 10 and user terminals 20 described above can be formed as a computer apparatus that includes a processor 1001, a memory 1002, a storage 1003, a communication apparatus 1004, an input apparatus 1005, an output apparatus 1006 and a Petition 870200156790, dated 12 / 14 / 2020, pp. 52 / 70 44 / 58 busbar 1007.

[00161] Note that in the following description, the word apparatus may be replaced by circuit, device, unit, and so forth. Note that the hardware structure of a base radio station 10 and a user terminal 20 may be designed to include one or more of each apparatus shown in the drawings, or may be designed to not include any apparatus.

[00162] For example, although only one 1001 processor is shown, a plurality of processors can be provided. Furthermore, processes can be implemented with one processor, or processes can be implemented sequentially, or in different ways, on two or more processors. Note that the 1001 processor can be implemented with one or more chips.

[00163] Each function of the base radio station 10 and the user terminal 20 is implemented by reading predetermined software (program) from hardware such as the processor 1001 and memory 1002, and controlling the calculations in the processor 1001, the communication in the communication device 1004, and the reading and / or writing of data in memory 1002 and storage 1003.

[00164] Processor 1001 can control the entire computer, for example, by running an operating system. Processor 1001 can be configured with a central processing unit (CPU), which includes interfaces with peripheral devices, control devices, computing devices, a register, and so on. For example, the baseband signal processing section 104 (204) described above, the call processing section 105, and so on can be implemented by processor 1001.

[00165] Furthermore, processor 1001 reads programs (program codes), Petition 870200156790, dated 12 / 14 / 2020, pp. 53 / 70 45 / 58 software or data modules, from storage 1003 and / or communication device 1004, in memory 1002, and execute various processes accordingly. As for programs, programs to enable computers to perform at least some of the operations of the modes described above can be used. For example, the control section 401 of user terminals 20 can be implemented by control programs that are stored in memory 1002 and that operate on processor 1001, and other functional blocks can be implemented in the same way.

[00166] Memory 1002 is a computer-readable recording medium and may consist of, for example, at least one of a ROM (Read-Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable EPROM), a RAM (Random Access Memory) and / or other suitable storage media. Memory 1002 may be referred to as a “register”, a “cache”, a “main memory (primary storage device)” and so forth. Memory 1002 may store executable programs (program codes), software modules and the like for implementing radio communication methods, according to an embodiment of the present invention.

[00167] Storage 1003 is a computer-readable recording medium, and may consist of, for example, at least one of a floppy disk, a floppy disk (trademark), a magneto-optical disk (e.g., a compact disc (CD-ROM (Compact Disc ROM) and so forth), a digital versatile disk, a Blu-ray disc (trademark)), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive, etc.), a magnetic stripe, a database, a server and / or other media. Petition 870200156790, dated 12 / 14 / 2020, pp. 54 / 70 46 / 58 of appropriate storage. Storage 1003 may be referred to as a “secondary storage device”.

[00168] Communication device 1004 is hardware (transmission / reception device) for enabling communication between computers using wired and / or wireless networks, and may be referred to, for example, as a “network device”, a “network controller”, a “network card”, a “communication module”, and so forth. Communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and so forth in order to perform, for example, frequency division duplex (FDD) and / or time division duplex (TDD). For example, the transmission / reception antennas described above 101 (201), amplification sections 102 (202), transmission / reception sections 103 (203), communication path interface 106, and so forth may be deployed by communication device 1004.

[00169] Input device 1005 is an input device for receiving input from outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, and so on). Output device 1006 is an output device for allowing output to be sent to the outside (e.g., a display, a speaker, an LED (Light Emitting Diode) lamp, and so on). Note that input device 1005 and output device 1006 can be provided in an integrated structure (e.g., a touch-sensitive panel).

[00170] Furthermore, these device parts, including the processor 1001, the memory 1002, and so on, are connected by the bus 1007 in order to communicate information. The bus 1007 can be formed with a single bus, or it can be formed with buses that vary between device parts. Petition 870200156790, dated 12 / 14 / 2020, pp. 55 / 70 47 / 58

[00171] Additionally, the base radio station 10 and the user terminal 20 can be structured to include hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application-Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field-Programmable Gate Array), and so on, and some or all of the functional blocks can be implemented by the hardware. For example, the processor 1001 can be implemented with at least one of these hardware components. (Variations)

[00172] Note that the terminology used in this descriptive report and the terminology necessary to understand this descriptive report may be replaced by other terms that convey the same or similar meanings. For example, channels and / or “symbols” may be replaced by “signals (or “signaling”)”. Additionally, “signals” may be “messages”. A reference signal may be abbreviated as an “RS” and may be referred to as a “pilot”, a “pilot signal”, and so on, depending on which standard applies. Furthermore, a “component carrier (CC)” may be referred to as a “cell”, a “frequency carrier”, a “frequency carrier”, and so on.

[00173] Furthermore, a radio frame can be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) that constitute a radio frame can be called a “subframe”. Furthermore, a subframe can be composed of one or more slots in the time domain. A subframe can have a fixed time duration (e.g., 1 ms) independent of numerology.

[00174] Furthermore, a slot can be composed of one or more time-domain symbols (OFDM symbols (Frequency Division Multiplexing) Petition 870200156790, dated 12 / 14 / 2020, pp. 56 / 70 48 / 58 Orthogonal), SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, and so on). Furthermore, a slot can be a unit of time based on numerology. Additionally, a slot can include a plurality of mini-slots. Each mini-slot can consist of one or more symbols in the time domain. Furthermore, a mini-slot can be referred to as a sub-slot.

[00175] A radio frame, a subframe, a slot, a mini-slot, and a symbol all represent the unit of time in signal communication. A radio frame, a subframe, a slot, a mini-slot, and a symbol can each be classified by other applicable names. For example, a subframe may be called a transmission time interval (TTI), or a plurality of consecutive subframes may be called a TTI, or a slot or mini-slot may be called a TTI. That is, a subframe and / or a TTI may be a subframe (1 ms) in existing LTE, may be a shorter period than 1 ms (e.g., one to thirteen symbols), or may be a longer period of time than 1 ms. Note that the unit to represent the TTI may be called a slot, a mini-slot, and so on, instead of a subframe.

[00176] In this document, a TTI refers to the minimum time-scaling unit in radiocommunication, for example. For instance, in LTE systems, a base radio station scales radio resources (such as frequency bandwidth and transmission power that can be used on each user terminal) to allocate to each user terminal in TTI units. Note that the definition of TTIs is not limited to this.

[00177] The TTI can be the unit of transmission time for channel-encoded data packets (transport blocks), code blocks and / or code words, or it can be the unit of processing in Petition 870200156790, dated 12 / 14 / 2020, pp. 57 / 70 49 / 58 scheduling, link adaptation, and so on. Note that when a TTI is provided, the time period (e.g., the number of symbols) in which transport blocks, code blocks, and / or codewords are actually mapped may be shorter than the TTI.

[00178] Note that when a slot or a mini-slot is designated as a TTI, one or more TTIs (i.e., one or more slots or one or more mini-slots) can be the minimum scheduling time unit. Furthermore, the number of slots (the number of mini-slots) to constitute this minimum scheduling time unit can be controlled.

[00179] A TTI that has a duration of 1 ms can be called a normal TTI (TTI in LTE Ver. 8 to 12), a long TTI, a normal subframe, a long subframe, and so on. A TTI that is shorter than a normal TTI can be called a reduced TTI, a short TTI, a partial TTI (or a fractional TTI), a reduced subframe, a short subframe, a mini-slot, a sub-slot, and so on.

[00180] Note that a long TTI (e.g., a normal TTI, a subframe, etc.) can be replaced by a TTI that has a duration exceeding 1 ms, and a short TTI (e.g., a shortened TTI) can be replaced by a TTI that has a TTI length less than the TTI length of a long TTI and not less than 1 ms.

[00181] A resource block (RB) is the unit of resource allocation in the time domain and frequency domain, and may include one or a plurality of consecutive subcarriers in the frequency domain. Additionally, an RB may include one or more symbols in the time domain, and may have the length of a slot, a mini-slot, a subframe, or a TTI. A TTI and a subframe may each be composed of one or more resource blocks. Note that one or more RBs may be designated as a block of Petition 870200156790, dated 12 / 14 / 2020, pages 58 / 70 50 / 58 physical resource (PRB: Physical RB)”, a “subcarrier group (SCG: Subcarrier Group)”, a “resource element group (REG)”, a “PRB pair”, a “RB pair”, and so on.

[00182] Furthermore, a feature block can be comprised of one or more feature elements (REs). For example, an RE can be a radio feature field of a subcarrier and a symbol.

[00183] Note that the radio frame structures, subframes, slots, mini-slots, symbols, and so on, described above are only examples. For example, the settings related to the number of subframes included in a radio frame, the number of slots included in a subframe, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol duration, the length of cyclic prefixes (CPs), and so on can be modified in various ways.

[00184] Additionally, the information and parameters described in this descriptive report may be represented in absolute values ​​or in relative values ​​with respect to predetermined values, or may be represented in other information formats. For example, radio features may be specified by predetermined indices. Furthermore, equations for using these parameters and so forth may be used, in addition to those explicitly described in this descriptive report.

[00185] The names used for parameters and so forth in this descriptive report are in no way limiting. For example, since various channels (PUCCH (Uplink Physical Control Channel), PDCCH (Downlink Physical Control Channel), and so forth) and information elements may be identified by any suitable names, the various names assigned to these individual channels and elements of Petition 870200156790, dated 12 / 14 / 2020, pages 59 / 70 51 / 58 information is by no means limiting.

[00186] The information, signals and / or other elements described in this descriptive report may be represented using a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols and chips, all of which may be referred to throughout the description contained in this document, may be represented by voltages, currents, electromagnetic waves, particles or magnetic fields, photons or optical fields, or any combination thereof.

[00187] Furthermore, information, signals, and so on can be transmitted from higher layers to lower layers and / or from lower layers to higher layers. Information, signals, and so on can be inserted and transmitted through a plurality of network nodes.

[00188] The information, signals, and so on that are entered can be transmitted to other parts of the apparatus. The information, signals, and so on to be entered and / or emitted can be replaced, updated, or added. The information, signals, and so on that are emitted can be removed. The information, signals, and so on that are entered can be transmitted to other parts of the apparatus.

[00189] Information reporting is by no means limited to the examples / modalities described in this descriptive report, and other methods may also be used. For example, information reporting can be implemented using physical layer signaling (e.g., downlink control information (DCI), uplink control information (UCI)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling), broadcast information (the master information block (MIB), system information blocks (SIBs) and Petition 870200156790, dated 12 / 14 / 2020, pages 60 / 70 52 / 58 and so on), MAC (Media Access Control) signaling and so on), and other signals and / or combinations thereof.

[00190] Note that physical layer signaling can be referred to as “L1 / L2 control information (Layer 1 / Layer 2) (L1 / L2 control signals)”, “L1 control information (L1 control signal)”, and so on. Additionally, RRC signaling can be referred to as “RRC messages” and can be, for example, an RRC connection definition message, an RRC connection reconfiguration message, and so on. Additionally, MAC signaling can be reported using, for example, MAC control elements (MAC CEs (Control Elements)).

[00191] Additionally, the reporting of predetermined information (for example, reporting information for the purpose that “X maintains”) does not necessarily have to be sent explicitly, and can be sent implicitly (for example, by not reporting that information).

[00192] Decisions can be made on values ​​represented by a bit (0 or 1), they can be made on boolean values ​​that represent true or false, or they can be made by comparing numerical values ​​(for example, comparison with a predetermined value).

[00193] Software, referred to as “software”, “firmware”, “middleware”, “microcode” or “hardware description language” or by other names, should be interpreted broadly to mean instructions, instruction sets, code, code segments, program codes, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, and so forth.

[00194] Additionally, software, commands, information and so on Petition 870200156790, dated 12 / 14 / 2020, pages 61 / 70 53 / 58 onwards can be transmitted and received through communication media. For example, when software is transmitted from a website, a server, or other remote sources using wired technologies (coaxial cables, fiber optic cables, twisted-pair cables, digital subscriber lines (DSL), and so on) and / or wireless technologies (infrared radiation, microwaves, and so on), these wired and / or wireless technologies are also included in the definition of communication media.

[00195] The terms “system” and “network”, as used in this document, are used interchangeably.

[00196] As used in this document, the terms “base station (BS)”, “radio base station”, “eNB”, “cell”, “sector”, “cell group”, “carrier” and “component carrier” may be used interchangeably. A base station may be referred to as a “fixed station”, “NodeB”, “eNodeB (eNB)”, “access point”, “transmission point”, “receive point”, “femto cell”, “small cell”, and so forth.

[00197] A base station may accommodate one or more (e.g., three) cells (also called “sectors”). When a base station accommodates a plurality of cells, the entire coverage area of ​​the base station may be partitioned into multiple smaller areas, and each smaller area may provide communication services through base station subsystems (e.g., small indoor base stations (RRHs: Remote Radio Headers)). The term “cell” or “sector” refers to part or all of a base station’s coverage area and / or a base station subsystem that provides communication services within that coverage.

[00198] As used in this document, the terms “mobile station (MS)”, “user terminal”, “user equipment (UE)” and “terminal” may be used interchangeably. A base station may be referred to as Petition 870200156790, dated 12 / 14 / 2020, pages 62 / 70 54 / 58 a “fixed station”, “NodeB”, “eNodeB (eNB)”, “access point”, “transmission point”, “receive point”, “femto cell”, “small cell” and so on.

[00199] A mobile station may be referred to by a person skilled in the art as a “subscriber station”, “mobile unit”, “subscriber unit”, “wireless unit”, “remote unit”, “mobile device”, “wireless device”, “radio communication device”, “remote device”, “mobile subscriber station”, “access terminal”, “mobile terminal”, “wireless terminal”, “remote terminal”, “telephone apparatus”, “user agent”, “mobile client”, “client”, or some other suitable terms.

[00200] Furthermore, the base radio stations in this descriptive report can be interpreted as user terminals. For example, each aspect / embodiment of the present invention can be applied to a configuration in which communication between a base radio station and a user terminal is replaced by communication between a plurality of user terminals (D2D: Device to Device). In this case, the user terminals 20 can have the functions of the base radio stations 10 described above. In addition, terms such as “uplink” and “downlink” can be interpreted as “side”. For example, an uplink channel can be interpreted as a side channel.

[00201] Similarly, user terminals, in this descriptive report, can be interpreted as base radio stations. In this case, base radio stations 10 can have the functions of user terminals 20 described above.

[00202] Certain actions described in this descriptive report to be performed by the base station may, in some cases, be performed by higher-level nodes. In a network composed of one or more network nodes with stations Petition 870200156790, dated 12 / 14 / 2020, pages 63 / 70 Based on the 55 / 58 model, it is clear that various operations performed to communicate with terminals can be carried out by base stations, one or more network nodes (e.g., MMEs (Mobility Management Entities), S-GWs (Server Gateways), and so on may be possible, but these are not limiting factors) in addition to base stations, or combinations thereof.

[00203] The examples / modalities illustrated in this descriptive report can be used individually or in combinations, which can be switched depending on the deployment mode. The order of processes, sequences, flowcharts, and so on, that were used to describe the examples / modalities in this document can be rearranged as long as no inconsistencies arise. For example, although several methods have been illustrated in this descriptive report with various step components in exemplary orders, the specific orders illustrated in this document are by no means limiting.

[00204] Note that radio communication system 1 can be applied to systems that use LTE (Long Term Evolution), LTE-A (LTE-Advanced), LTE-B (LTE-Beyond), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), Nova-RAT (Radio Access Technology), NR (New Radio), NX (New Radio Access), FX (Future Generation Radio Access), GSM (Global System for Mobile Communications (trademark)), CDMA 2000, UMB (Ultra Broadband Mobile), IEEE 802.11 (Wi-Fi (trademark)), IEEE 802.16 (WiMAX (trademark)), IEEE 802.20, WB (Ultra Broadband), Bluetooth (trademark), and other appropriate radiocommunication technologies and / or may be applied to next-generation systems that are enhanced based on these radiocommunication technologies.

[00205] The expression “based on, as used in this report Petition 870200156790, dated 12 / 14 / 2020, pages 64 / 70 56 / 58 descriptive, does not mean "based solely on", unless otherwise specified. In other words, the expression "based on" means both "based only on" and "based at least on".

[00206] The reference to elements with designations such as “first”, “second”, and so forth, as used in this document, does not, in general, limit the number / quantity or order of these elements. These designations are used only for convenience, as a method of distinguishing between two or more elements. Thus, the reference to the first and second elements does not imply that only two elements can be used, or that the first element must precede the second element in any way.

[00207] The terms “judge” and “determine,” as used in this document, can encompass a wide variety of actions. For example, “judge” and “determine,” as used in this document, can be interpreted to mean making judgments and determinations related to calculation, computation, processing, derivation, investigation, consultation (e.g., searching a table, a database, or some other data structure), verification, and so forth. Furthermore, “judge” and “determine,” as used in this document, can be interpreted to mean making judgments and determinations related to receiving (e.g., receiving information), transmitting (e.g., transmitting information), inserting, issuing, accessing (e.g., accessing data in a memory), and so forth.Furthermore, "judge" and "determine," as used in this document, can be interpreted to mean making judgments and determinations related to resolution, selection, choice, establishment, comparison, and so forth. In other words, "judge" and "determine," as used in this document, can be... Petition 870200156790, dated 12 / 14 / 2020, pages 65 / 70 57 / 58 interpreted to mean making judgments and determinations related to some action.

[00208] As used in this document, the terms connected and coupled, or any variation thereof, mean all direct or indirect connections or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are connected or coupled to each other. The coupling or connection between the elements may be physical, logical, or a combination thereof. For example, connection may be interpreted as access. As used in this document, two elements may be considered connected or coupled to each other using one or more electrical wires, cables, and / or printed electrical connections and, as in numerous non-limiting and non-inclusive examples, using electromagnetic energy, such as electromagnetic energy having wavelengths in the radio frequency, microwave, and optical regions (both visible and invisible).

[00209] When terms such as include, comprise, and variations thereof are used in this descriptive report or in the claims, these terms are intended to be inclusive, in a manner similar to how the term provide is used. Furthermore, the term or, as used in this descriptive report or in the claims, is not intended to be an exclusive disjunction.

[00210] Furthermore, although the present invention has been described in detail above, it should be evident to a person skilled in the art that the present invention is by no means limited to the embodiments described herein. The present invention can be implemented with various corrections and in various modifications without departing from the spirit and scope of the present invention as defined by the citations of the claims. Consequently, the description herein is provided only Petition 870200156790, dated 12 / 14 / 2020, pp. 66 / 70 58 / 58 for the purpose of explaining the examples, and should in no way be interpreted as limiting the present invention in any way.

[00211] The description of Patent Application No. JP 2016-255537, filed on December 28, 2016, including the descriptive report, drawings and abstract, is incorporated herein by reference in its entirety. Petition 870200156790, dated 12 / 14 / 2020, pp. 67 / 70

Claims

1 / 2 CLAIMS 1. Terminal (20) characterized in that it comprises: a receiving section (203) adapted to receive downlink control information, DCI; a control section (401) adapted to control the transmission of a Physical Uplink Shared Channel, PUSCH, in a k-th slot that is designated by a field included in the DCI after a processing time from a last DCI receipt timing; and a transmitting section (203) adapted to transmit processing time information as UE capacity information for a network, wherein ok indicates how many slots after, with respect to a slot after the processing time, have elapsed since the DCI was received.

2. Terminal (20), according to claim 1, characterized in that the processing time corresponds to a predetermined period after receiving a downlink signal, regardless of the timing advance value.

3. A radio communication method for a terminal characterized in that it comprises: receiving downlink control information, DCI; controlling the transmission of a Physical Uplink Shared Channel, PUSCH, in a k-th slot that is designated by a field included in the DCI after a processing time from a last DCI receipt timing; and transmitting the processing time information as UE capacity information to a network, where ok indicates how many slots after, with respect to a slot after the processing time, have elapsed since the DCI was received.

4. Base station (10) characterized in that it comprises: a transmission section (103) adapted to transmit downlink control information, DCI, to a terminal; a control section (301) adapted to control the reception of a Physical Uplink Shared Channel, PUSCH, which is transmitted by the terminal in a k-th slot that is designated by a field included in the DCI after a processing time from a last DCI reception timing at the terminal; and a reception section (103) adapted to receive processing time information as UE capacity information for a network, where ok indicates how many slots after, relative to a slot after the processing time, have elapsed since the DCI was received by the terminal. Petition 870260063270, dated 06 / 26 / 2026, p. 13 / 15

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