Terminal, base station, system and wireless communication method

Abstract

One method of the terminal disclosed in the present invention includes: a sending unit, which sends at least one of an uplink shared channel and an uplink reference signal; and a control unit, which performs different sending actions based on the type of the uplink shared channel when the uplink shared channel and the uplink reference signal are set or allocated to the same resource.

Description

Technical Field

[0001] The present disclosure relates to a terminal and a wireless communication method in a next generation mobile communication system. Background Art

[0002] In the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) is standardized for the purpose of further high-speed data rate, low latency, etc. (Non-Patent Document 1). In addition, LTE-Advanced (3GPP Rel. 10-14) is standardized for the purpose of further increasing the capacity and sophistication of LTE (Release (Rel.) 8, 9 of the Third Generation Partnership Project (3GPP)).

[0003] Successor systems of LTE (for example, also referred to as fifth generation mobile communication system (5G), 5G+(plus), New Radio (NR), 3GPP Rel.15 and later, etc.) are also being studied.

[0004] In the existing LTE system (e.g., 3GPP Rel.8-14), the user terminal (User Equipment (UE)) controls the reception of downlink shared channels (e.g., Physical Downlink Shared Channel (PDSCH)) based on downlink control information (also called downlink control information (DCI: Downlink Control Information), DL allocation, etc.) from the base station. In addition, the user terminal controls the transmission of uplink shared channels (e.g., Physical Uplink Shared Channel (PUSCH)) based on DCI (also called UL grant, etc.).

[0005] Prior art literature

[0006] Non-patent literature

[0007] Non-patent document 1: 3GPP TS 36.300 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

[0008] Problems to be solved by the invention

[0009] In future wireless communication systems (e.g., 5G or NR), multiple use cases with different requirements are envisioned, such as high speed and large capacity (e.g., enhanced mobile broadband (eMBB)), ultra-large number of terminals (e.g., massive machine type communication (massive MTC (Machine Type Communication))), ultra-high reliability and low latency (e.g., ultra-reliable and low latency communication (URLLC (Ultra Reliable and Low Latency Communications))). In addition, the names of these use cases are not limited to the above. For example, URLLC can also be called critical MTC (Critical MTC), ultra-reliable MTC (Ultra-reliable MTC), mission critical communications (Mission Critical Communications), etc.

[0010] In such future wireless communication systems, it is assumed that multiple data (eg, downlink shared channels) with different requirements are transmitted to the same or multiple UEs. Alternatively, it is assumed that multiple data (eg, uplink shared channels) with different requirements are transmitted from the same or multiple UEs.

[0011] In this case, a situation where multiple data and reference signals with different requirements collide (for example, are set to the same resource) is also considered. However, how to control the transmission or reception of the colliding data (or at least one of the channel and the signal) and the reference signal in this case has not been fully studied.

[0012] Therefore, one of the objects of the present disclosure is to provide a terminal and a wireless communication method capable of appropriately transmitting or receiving a plurality of data having different requirement conditions.

[0013] Means for solving problems

[0014] A terminal according to one aspect of the present invention is characterized by comprising: a sending unit for sending at least one of an uplink shared channel and an uplink reference signal; and a control unit for performing different sending actions based on the type of the uplink shared channel when the uplink shared channel and the uplink reference signal are set or allocated to the same resource.

[0015] Effects of the Invention

[0016] According to one aspect of the present disclosure, it is possible to appropriately transmit or receive a plurality of data having different requirement conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A as well as Figure 1B This is a diagram showing an example of collision between a channel and a reference signal.

[0018] Figure 2A as well as Figure 2B This is a diagram showing an example of a mapping operation when a DL channel and a DL reference signal collide.

[0019] Figure 3A as well as Figure 3B This is a diagram showing an example of a mapping operation when a UL channel and a UL reference signal collide with each other.

[0020] Figure 4 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0021] Figure 5 This is a diagram showing an example of the configuration of a base station according to one embodiment.

[0022] Figure 6 This is a diagram showing an example of the structure of a user terminal according to one embodiment.

[0023] Figure 7 This is a diagram showing an example of the hardware configuration of a base station and a user terminal according to an embodiment. DETAILED DESCRIPTION

[0024] (DL data allocation)

[0025] DL data (eg, DL-SCH) is mapped to specific allocated resources (eg, PDSCH) and transmitted. The specific allocated resources may be notified to the UE from the network (eg, base station) using at least one of downlink control information (eg, DCI) and higher layer signaling.

[0026] In an existing system (e.g., Rel. 15), the PDSCH used in the transmission of DL data is allocated to resources other than a demodulation reference signal (e.g., DM-RS), a channel state information reference signal (e.g., CSI-RS), a phase tracking reference signal (PTRS), a cell-specific reference signal (e.g., Cell-specific Reference Signal (CRS)), and a synchronization signal block (e.g., SS / PBCH block). The CSI-RS may also be at least one of a periodic CSI-RS, a semi-persistent non-zero-power CSI-RS, and a zero-power CSI-RS.

[0027] Figure 1A An example of mapping of DL data (PDSCH) and CSI-RS is shown. Here, the case where PDSCH (DL SPS) is transmitted with a period of 2 time slots and CSI-RS is transmitted with a period of 5 time slots is shown. Figure 1A In time slot #6, the resources used for PDSCH and the resources used for DL ​​reference signals (such as CSI-RS) overlap (or also called conflict, collision).

[0028] In such a case, as described above, PDSCH is allocated while avoiding resources for CSI-RS. UE may also assume that PDSCH is allocated to resources other than resources for CSI-RS and perform reception processing.

[0029] However, in future wireless communication systems (e.g., 5G or NR), multiple use cases with different requirements are envisioned, such as high speed and large capacity (e.g., enhanced mobile broadband (eMBB)), a large number of terminals (e.g., massive machine type communication (massive MTC)), and ultra-high reliability and low latency (e.g., ultra-reliable and low latency communication (URLLC)).

[0030] In this case, it is also envisioned that there is a conflict between the PDSCH and DL reference signal (such as CSI-RS) corresponding to a high-priority transmission type (such as URLLC) that requires ultra-high reliability and low latency. In such a case, if the PDSCH of the high-priority transmission type is allocated to resources that avoid CSI-RS resources for transmission according to the mapping rules of the existing system, the coding rate becomes high, and there is a concern that the required conditions will not be met.

[0031] It is also possible that the network (eg, base station) side considers the CSI-RS in the time slot to which the CSI-RS is allocated and increases the allocated resources of the PDSCH. However, when semi-persistent scheduling or repeated transmission is applied to transmit the PDSCH, there is a concern that scheduling efficiency may be reduced.

[0032] (UL data allocation)

[0033] UL data (eg, UL-SCH) is mapped to specific allocated resources (eg, PUSCH) and transmitted. The specific allocated resources may also be notified to the UE from the network (eg, base station) using at least one of downlink control information (eg, DCI) and higher layer signaling.

[0034] In existing systems (e.g., Rel. 15), the PUSCH used in the transmission of UL data is allocated to resources other than the demodulation reference signal (e.g., DM-RS) and the phase tracking reference signal (PTRS). In addition, when the PUSCH and SRS are allocated to the same time slot, the SRS is controlled to be transmitted after the transmission of the PUSCH.

[0035] Figure 1B An example of mapping UL data (PUSCH) and SRS is shown. Here, it is shown that repetitive transmission (here, the number of repetitions is 4) based on mini-slots (for example, a specific number of symbols) is applied to PUSCH, and SRS is transmitted with a period of 5 slots. Figure 1B In time slot #11, the resources used for PUSCH and the resources used for UL reference signals (such as SRS) overlap (or also called conflict, collision).

[0036] In this case, since collision between SRS and PUSCH is not allowed or supported, there is a concern that PUSCH transmitted in the same time slot as SRS cannot be properly allocated (or scheduled). Since the UE does not assume that resources for SRS and PUSCH will collide, it cannot perform reception processing properly.

[0037] In this case, it is also envisioned that a conflict occurs between the PUSCH and UL reference signal (e.g., SRS) corresponding to a high-priority transmission type (e.g., URLLC) that requires high reliability and low latency. At this time, if the mapping rules of the existing system are followed, the conflict between the PUSCH and SRS of the high-priority transmission type is not allowed, so there is a concern that the PUSCH cannot be properly transmitted.

[0038] It is also possible to control the allocation (eg, PUSCH) on the network (eg, base station) side so that SRS and PUSCH do not collide. However, in this case, there is a concern that a delay will occur in the transmission of PUSCH and the required conditions may not be met.

[0039] As one embodiment of the present invention, the inventors of the present invention focused on the situation where the transmission of a DL channel (e.g., at least one of PDSCH and PDCCH) of a high-priority transmission type in NR conflicts with other signals (e.g., DL reference signal), and came up with the idea of ​​controlling the receiving action based on the type of downlink channel in such a situation.

[0040] Alternatively, as another embodiment of the present invention, the inventors of the present invention focused on the situation where the transmission of a UL channel (e.g., at least one of PUSCH and PUCCH) of a high-priority transmission type in NR conflicts with other signals (e.g., UL reference signal), and came up with the idea of ​​controlling the transmission action based on the type of UL channel in such a situation.

[0041] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In addition, the following first and second aspects may be used alone or in combination of at least two.

[0042] The following method can be applied to transmission and reception that applies repetitive transmission (or repetition), transmission and reception that does not apply repetitive transmission (or the number of repetitions is 1), transmission and reception that uses semi-persistent scheduling, and transmission and reception that does not use semi-persistent scheduling.

[0043] In addition, the method shown below can be applied to the conflict between channels and reference signals sent by the same UE (intra-UE overlapping case), and can also be applied to the conflict between channels and reference signals sent by different UEs (inter-UE overlapping case).

[0044] (First method)

[0045] In the first embodiment, a case where a DL channel collides with a DL reference signal will be described.

[0046] In the following description, the DL channel can also be interpreted as a downlink shared channel transmission (e.g., PDSCH transmission) and a monitoring opportunity for a downlink control channel (PDCCH monitoring occasion). In addition, in the following description, CSI-RS is cited as an example of a DL reference signal, but the DL reference signal is not limited thereto and may also be PT-RS, CRS, or SS / PBCH block. In addition, a DL reference signal may also be included in a DL channel.

[0047] In addition, the collision between the DL channel and the DL reference signal may also be a case where the DL channel is set or allocated to the same resource (for example, at least one of a time resource and a frequency resource) as the DL reference signal. The time resource may also be interpreted as a symbol.

[0048] In the case where a DL channel conflicts with a DL reference signal, allocation rules (or mapping rules) or UE actions for the DL channel and the DL reference signal may be separately controlled (or supported) based on the type (or transmission type) of the DL channel. In the following description, a first type with a high priority and a second type with a lower priority than the first type are taken as examples as types of DL channels, but the types of DL channels are not limited to two.

[0049] The first type may correspond to a specific service type (eg, URLLC transmission), and the second type may correspond to transmissions other than the first type (eg, transmissions that do not correspond to URLLC transmissions).

[0050] For example, the first type may also be a transmission scheduled with a high priority. The priority may also be determined based on at least one of the RNTI, DCI format, DCI field, control resource set, and search space used to scramble the CRC. For example, the UE may also determine the priority (or transmission type) of the DL channel based on at least one of the RNTI, DCI format, DCI field, control resource set, and search space used in the DL channel.

[0051] Alternatively, the first type of DL channel may also be set by high-layer signaling, etc. Alternatively, a specific MCS table may be associated with the first type of DL channel. For example, the UE may also determine that a DL channel having an MCS table that specifies a coding rate below a specific value (for example, a minimum or maximum coding rate below a specific value) is of the first type.

[0052] For example, the second type may also be a transmission scheduled with a lower priority than the first type. The priority may also be determined based on at least one of the RNTI, DCI format, DCI field, control resource set, and search space used to scramble the CRC. For example, the UE may also determine the priority (or transmission type) of the DL channel based on at least one of the RNTI, DCI format, DCI field, control resource set, and search space used in the DL channel.

[0053] Alternatively, the second type of DL channel may also be set by high-layer signaling, etc. Alternatively, a specific MCS table may be associated with the second type of DL channel. For example, the UE may also determine that a DL channel of the second type is set with an MCS table that specifies a coding rate above a specific value (for example, a minimum or maximum coding rate is above a specific value).

[0054] When a DL channel collides with a DL reference signal, allocation rules for the first type DL channel and the second type DL channel, or reception actions of the UE on the first type DL channel and the second type DL channel may be performed separately.

[0055] <First Type>

[0056] The UE may also apply at least one of the following options 1-1 to 1-6 when a DL channel (e.g., at least one of the PDSCH and PDCCH monitoring opportunities) is configured or allocated to the same resource (e.g., the same symbol) as a DL reference signal and the DL channel is of the first type (or a first type DL channel). In addition, in the following description, a DL channel may also be interpreted as a DL channel and a DL reference signal (e.g., a DMRS corresponding to the DL channel) contained in the DL channel.

[0057] [Option 1-1]

[0058] The resources of the DL reference signal may also be used for the DL channel, and all the DL reference signals may be dropped. The UE may also assume that the DL reference signal is dropped and use the resources used for the DL reference signal to send the DL channel (for example, at least one of DL data, DMRS, and DCI) (see Figure 2A ).

[0059] exist Figure 2A In FIG. 1 , it is shown that the first type of DL channel (eg, DL SPS) is transmitted with a period of 2 time slots and the DL reference signal (eg, CSI-RS) is transmitted with a period of 5 time slots. Figure 2AIn time slot #6, the resources for the DL channel and the resources for the DL reference signal overlap (or also referred to as conflict). In this case, the DL reference signal is not sent (discarded), but the first type of DL channel is sent using the resources of the DL reference signal.

[0060] In this way, by transmitting (or allocating) the first type of DL channel with priority over the DL reference signal, it is possible to appropriately transmit a DL signal requiring ultra-high reliability and low delay, thereby suppressing degradation of communication quality.

[0061] [Option 1-2]

[0062] After the DL reference signal is mapped to the resource for the DL reference signal, the DL channel may be mapped to the resource for the DL channel. The UE maps the DL reference signal to the configured or allocated resource, but it is also conceivable that the DL reference signal is punctured in the resource for the DL channel.

[0063] In this way, by giving priority to the transmission (or allocation) of the first type of DL channel over the DL reference signal, the DL signal requiring ultra-high reliability and low latency can be appropriately transmitted, thereby suppressing the degradation of communication quality. In addition, the DL reference signal can be transmitted in the resources for the DL reference signal that do not conflict with the resources for the DL channel, thereby improving the communication quality.

[0064] [Options 1-3]

[0065] The resources of the DL reference signal are used for the DL channel, but the DL reference signal (e.g., remaining CSI-RS) may also be sent. The UE maps the DL channel (e.g., at least one of DL data, DMRS, and DCI) in the configured or allocated resources, but it may also be assumed that the DL channel is truncated in the resources for the DL reference signal.

[0066] For example, when the number of resources for which DL reference signals are set or allocated is smaller than the number of resources for which DL channels are set or allocated, even if DL reference signals are sent using the resources of DL channels, the impact on the sending of DL channels is small. In such a case, by sending both DL channels and DL reference signals, the communication quality can be improved.

[0067] [Options 1-4]

[0068] It may also be controlled so that at least the resources of the DL reference signal are not used for the DL channel. That is, the DL channel may also be controlled to be allocated in addition to the resources of the DL reference signal. The UE may also be conceived to map the DL channel (e.g., at least one of DL data, DMRS, and DCI) in resources other than the resources of the DL reference signal. In other words, the UE may also be conceived to apply rate matching.

[0069] For example, when the resources for setting or allocating DL reference signals are less than the resources for setting or allocating DL channels, even if the DL channels are allocated without using the resources for DL ​​reference signals, the increase in coding rate can be suppressed. In such a case, by sending both DL channels and DL reference signals, the communication quality can be improved.

[0070] [Options 1-5]

[0071] It can also be controlled so that at least the codewords of the DL reference signal are not used for the DL channel. That is, the DL channel can also be controlled to be allocated in addition to the codewords allocated to the DL reference signal. The UE can also assume that the DL channel (for example, at least one of DL data, DMRS and DCI) set or allocated to the resources (for example, codewords) allocated to the DL reference signal is mapped (for example, deferred, postponed) to different codewords. Different codewords can be defined by the specification, or notified to the UE from the base station through at least one of high-layer signaling and DCI.

[0072] By transmitting both a DL channel and a DL reference signal, communication quality can be improved.

[0073] [Options 1-6]

[0074] It is also possible to decide which of the above options 1-1 to 1-5 to apply based on a specific condition. In the case where a DL channel collides with a DL reference signal, the UE may also decide a receiving operation based on a specific condition.

[0075] The specific condition may also be information notified from the network (eg, base station), the coding rate of the DL channel, parameters related to overhead (eg, N PRB oh ), and at least one of the number of ports of the DL reference signal.

[0076] The base station may also notify the UE of the mapping rule or the UE's receiving action when a conflict occurs between the DL channel and the DL reference signal by using high-layer signaling, etc. The UE controls the receiving processing of the DL channel and the DL reference signal based on the information notified from the base station. The mapping rule or the receiving action applied may be notified for each type of DL channel, or the mapping rule or the receiving action applied may be notified only for a specific type (e.g., the first type).

[0077] The mapping rule or the receiving action of the UE may also be determined based on the coding rate of the DL channel. For example, when the coding rate of the DL channel (or the coding rate of the DL channel when a DL reference signal is transmitted) becomes higher than a specific value, option 1-1, 1-2 or 1-5 may also be applied. On the other hand, when the coding rate of the DL channel (or the coding rate of the DL channel when a DL reference signal is transmitted) is below a specific value, option 1-4 may also be applied.

[0078] It can also be based on overhead-related parameters related to PDSCH (e.g., N PRB oh ) to determine the mapping rule or the UE's receiving action. PRB oh ) represents the overhead from other signals (e.g., CSI-RS, PT-RS, etc.). PRB oh Indicates the number of resource elements (RE) for other signals in the PRB, N PRB oh It can also be a value set by a high-level parameter (configuration). For example, N PRB oh It is the overhead indicated by the higher layer parameter (Xoh-PDSCH), and can be any value of 0, 6, 12, or 18. When Xoh-PDSCH is not configured (notified) to the UE, Xoh-PDSCH can also be set to 0. The UE can also PRB oh To decide TBS, etc.

[0079] For example, the overhead-related parameters (eg, N PRB oh ) becomes greater than a specific value, option 1-1, 1-2 or 1-5 is applied. On the other hand, it is also possible to set the overhead-related parameters (e.g., N PRB oh ) becomes below a specific value, option 1-3 or 1-4 is applied.

[0080] The mapping rule or the reception action of the UE may also be determined based on the number of ports of the DL reference signal (e.g., CSI-RS port). For example, when the number of ports of the DL reference signal becomes greater than a specific value, option 1-1, 1-2, or 1-5 may also be applied. On the other hand, when the number of ports of the DL reference signal becomes less than a specific value, option 1-2 or 1-4 may also be applied.

[0081] <Second Type>

[0082] The UE may also apply at least one of the following options 1-A to 1-B when a DL channel (e.g., at least one of the PDSCH and PDCCH monitoring opportunities) is set or allocated to the same resources (e.g., the same codeword) as the DL reference signal and the DL channel is of the second type (or a second type DL channel).

[0083] [Option 1-A]

[0084] It can also be controlled so that at least the resources of the DL reference signal are used for the DL channel containing DMRS (for example, at least one of the PDCCH and the PDSCH). That is, the PDCCH and DMRS, or the PDSCH and DMRS can also be controlled and allocated in addition to the resources of the DL reference signal. The UE can also be conceived to map the DCI (or PDCCH) and DMRS, or the DL data (or PDSCH) and DMRS in resources other than the resources of the DL reference signal. In other words, the UE can be conceived to apply rate matching (refer to Figure 2B ).

[0085] exist Figure 2B In FIG. 1 , it is shown that the second type of DL channel (eg, DL SPS) is transmitted with a period of 2 time slots and the DL reference signal (eg, CSI-RS) is transmitted with a period of 5 time slots. Figure 2B In time slot #6, resources for DL ​​channels and resources for DL ​​reference signals overlap (or also referred to as conflict, collision). In this case, DL channels including DMRS (e.g., PDCCH and DMRS, or PDSCH and DMRS) are allocated to avoid resources for DL ​​reference signals, and DL channels of the second type and DL reference signals are transmitted.

[0086] In this way, when a DL channel of the second type with a low priority collides with a DL reference signal in a specific resource, channel quality measurement can be continued by giving priority to transmission of the DL reference signal in the specific resource.

[0087] [Option 1-B]

[0088] It can also be controlled so that at least the resources of the DL reference signal are not used for the DL channel (for example, at least one of the PDCCH and the PDSCH), and the DL reference signal does not overlap with the same resources as the DMRS (for example, resource elements (RE)). That is, the PDCCH or PDSCH is allocated in addition to the resources of the DL reference signal, and is controlled so that the DMRS and the DL reference signal do not overlap.

[0089] The UE may also be conceived to map DCI (or PDCCH) or DL ​​data (or PDSCH) on resources other than the resources of the DL reference signal. In addition, the UE may also be conceived to not receive the DL reference signal and the DMRS corresponding to the second type of DL channel (PDCCH or PDSCH) through the same resources (e.g., RE).

[0090] In this way, when a DL channel of the second type with a low priority collides with a DL reference signal in a specific resource, channel quality measurement can be continued by giving priority to transmission of the DL reference signal in the specific resource.

[0091] like Figure 2A as well as Figure 2B As shown, when a DL channel collides with a DL reference signal, by controlling the mapping rule or the reception operation of the UE based on the type of the DL channel, the reception process can be flexibly performed according to the required conditions. This can suppress the degradation of communication quality.

[0092] (Second method)

[0093] In the second manner, a case where a UL channel collides with a UL reference signal will be described.

[0094] In the following description, the UL channel may also be replaced by an uplink shared channel (e.g., PUSCH) and an uplink control channel (e.g., PUCCH). In addition, the PUCCH may also be replaced by UCI. In addition, in the following description, a sounding reference signal (SRS) is cited as an example of a UL reference signal, but the UL reference signal is not limited thereto and may also be a PT-RS. In addition, a UL channel may also include a UL reference signal.

[0095] In addition, the UL channel and the UL reference signal may collide when the UL channel is configured or scheduled to the same resource (eg, at least one of a time resource and a frequency resource) as the UL reference signal. The time resource may also be interpreted as a symbol.

[0096] In the case where a UL channel conflicts with a UL reference signal, allocation rules (or mapping rules) or UE actions of the UL channel and the UL reference signal may be separately controlled (or supported) based on the type of the UL channel. In the following description, as the types of UL channels, a first type with a high priority and a second type with a lower priority than the first type are taken as examples for description, but the types of UL channels are not limited to two.

[0097] The first type may also correspond to a specific service type (e.g., URLLC transmission), and the second type may also correspond to transmissions other than the first type (e.g., transmissions that do not correspond to URLLC transmissions). For example, the first type or the second type may also be determined based on the method shown in the first embodiment above.

[0098] For example, when a UL channel conflicts with a UL reference signal, the allocation rules of the first type UL channel and the second type UL channel, or the UE's transmission actions on the first type UL channel and the second type UL channel may be performed separately.

[0099] <First Type>

[0100] The UE may also apply at least one of the following options 2-1 to 2-6 when a UL channel (e.g., at least one of PUSCH and PUCCH) is configured or scheduled to the same resource (e.g., the same symbol) as a UL reference signal and the UL channel is of the first type (or a first type UL channel). In addition, in the following description, the UL channel may also be interpreted as a UL channel and a UL reference signal (e.g., a DMRS corresponding to the UL channel) contained in the UL channel.

[0101] [Option 2-1]

[0102] The resources of the UL reference signal may also be used for the UL channel, and all the UL reference signals may also be discarded. The UE may also control so that the UL reference signal is discarded and the UL channel (for example, at least one of UL data, DMRS and UCI) is sent using the resources used for the UL reference signal (refer to Figure 3A ).

[0103] exist Figure 3A In FIG. 1 , it is shown that the first type of UL channel (e.g., repeated transmission of PUSCH (repetition factor 4)) is transmitted with a specific number of symbols or based on mini-slots, and the UL reference signal (e.g., SRS) is transmitted with a period of 5 slots. Figure 3AIn time slot #11, the resources used for the UL channel and the resources used for the UL reference signal overlap (or also referred to as conflict). In this case, the UE may not send (discard) the UL reference signal, but use the resources of the UL reference signal to send the first type of UL channel.

[0104] In this way, by transmitting (or allocating) the first type of UL channel with priority over the UL reference signal, it is possible to appropriately transmit a UL signal requiring ultra-high reliability and low delay, thereby suppressing degradation of communication quality.

[0105] [Option 2-2]

[0106] After the UL reference signal is mapped to the resource for the UL reference signal, the UL channel may be mapped to the resource for the UL channel. The UE may also assume that the UL reference signal is mapped to the configured or allocated resource but the UL reference signal is punctured in the resource for the UL channel.

[0107] In this way, by giving priority to the transmission (or allocation) of the first type of UL channel over the UL reference signal, the UL signal requiring ultra-high reliability and low latency can be properly transmitted, thereby suppressing the degradation of communication quality. In addition, the UL reference signal can be transmitted in the resources for the DL reference signal that do not conflict with the resources for the UL channel, thereby improving the communication quality.

[0108] [Option 2-3]

[0109] The resources of the UL reference signal are used for the UL channel, but the UL reference signal (e.g., SRS) may also be sent. The UE maps the UL channel (e.g., at least one of UL data, DMRS, and UCI) to the configured or scheduled resources, but may also be controlled so that the UL channel is truncated in the resources for the UL reference signal.

[0110] For example, when the resources for setting or allocating UL reference signals are less than the resources for setting or scheduling UL channels, even if the UL reference signals are transmitted using the resources of the UL channels, the impact on the transmission of the UL channels is small. In such a case, by transmitting both the UL channels and the UL reference signals, the communication quality can be improved.

[0111] [Option 2-4]

[0112] It can also be controlled so that at least the resources of the UL reference signal are not used for the UL channel. That is, the UL channel can also be controlled to be allocated in addition to the resources of the UL reference signal. The UE can also control so that the UL channel (for example, at least one of UL data, DMRS and UCI) is mapped to the resources other than the resources of the UL reference signal. In other words, the UE can also control so that rate matching is applied.

[0113] For example, when the resources for setting or allocating UL reference signals are less than the resources for setting or scheduling UL channels, even if the UL channels are allocated while avoiding the resources for UL reference signals, the increase in coding rate can be suppressed. In such a case, by sending both UL channels and UL reference signals, the communication quality can be improved.

[0114] [Option 2-5]

[0115] It can also be controlled so that at least the codeword of the UL reference signal is not used in the UL channel. That is, in addition to the symbols allocated to the UL reference signal, the UL channel can also be controlled to be allocated. The UE can also control so that the UL channel (for example, at least one of UL data, DMRS and UCI) set or scheduled for the resource (for example, codeword) allocated with the UL reference signal is mapped (for example, postponed, delayed (postpone)) to different codewords. Different codewords can be defined by the specification, or notified to the UE by the base station through at least one of the higher layer signaling and DCI.

[0116] By transmitting both the UL channel and the UL reference signal, communication quality can be improved.

[0117] [Option 2-6]

[0118] It is also possible to determine which of the above options 2-1 to 2-5 to apply based on a specific condition. When a UL channel collides with a UL reference signal, the UE may also determine a receiving action based on a specific condition.

[0119] The specific condition may also be information notified from the network (eg, base station), the coding rate of the UL channel, and parameters related to overhead (eg, N PRB oh ), and at least one of the number of ports of the UL reference signal.

[0120] The base station may also notify the UE of the mapping rule or the UE's transmission action when the UL channel and the UL reference signal conflict by using high-layer signaling. The UE controls the transmission processing of the UL channel and the UL reference signal based on the information notified from the base station. The mapping rule or the applied transmission action may be notified for each type of the UL channel, or the mapping rule or the applied transmission action may be notified only for a specific type (e.g., the first type).

[0121] The mapping rule or the transmission action of the UE may also be determined based on the coding rate of the UL channel. For example, when the coding rate of the UL channel (or the coding rate of the UL channel when the UL reference signal is transmitted) becomes higher than a specific value, option 2-1, 2-2 or 2-5 may also be applied. On the other hand, when the coding rate of the UL channel (or the coding rate of the UL channel when the UL reference signal is transmitted) becomes below a specific value, option 2-4 may also be applied.

[0122] Based on the overhead-related parameters (e.g., N PRB oh ) to determine the mapping rule or the UE's receiving action. PRB oh ) represents the overhead from other signals (e.g., SRS, PT-RS, etc.). PRB oh Indicates the number of resource elements (RE) for other signals in the PRB, N PRB oh It can also be a value configured by a high-level parameter. For example, N PRB oh It is the overhead indicated by the higher layer parameter (Xoh-PUSCH), and may be any value of 0, 6, 12, or 18. When Xoh-PUSCH is not configured (notified) to the UE, Xoh-PUSCH may be set to 0. The UE may also PRB oh Decide on TBS, etc.

[0123] For example, in the case of overhead-related parameters (e.g., N PRB oh ) becomes greater than a specific value, option 2-1, 2-2, or 2-5 may also be applied. On the other hand, in the case where the overhead-related parameters (e.g., N <prb>oh) is below a specific value, option 2-3 or 2-4 can also be applied.

[0124] The mapping rule or the UE's transmission action may also be determined based on the number of UL reference signal ports (e.g., SRS ports). For example, when the number of UL reference signal ports becomes greater than a specific value, option 2-1, 2-2, or 2-5 may also be applied. On the other hand, when the number of UL reference signal ports becomes less than a specific value, option 2-3 or 2-4 may also be applied.

[0125] <Second Type>

[0126] The UE may also apply at least one of the following options 2-A to 2-D when the UL channel (e.g., at least one of PUSCH and PUCCH) is configured or scheduled to the same resources (e.g., the same codeword) as the UL reference signal and the UL channel is of the second type (or a second type UL channel).

[0127] [Option 2-A]

[0128] It can also be controlled so that at least the resources of the UL reference signal are not used for the UL channel (for example, at least one of the PUCCH and the PUSCH) containing the DMRS. That is, the PUCCH and DMRS, or the PUSCH and DMRS can also be controlled to be allocated in addition to the resources of the UL reference signal. The UE can also control so that the UCI (or PUCCH) and DMRS or the UL data (or PUSCH) and DMRS are mapped to resources other than the resources of the UL reference signal. In other words, the UE can also control so that the rate matching is applied (refer to Figure 3B ).

[0129] exist Figure 3B , it is shown that the second type of UL channel (e.g., repeated transmission of PUSCH (repetition factor 4)) is transmitted with a specific number of symbols or based on mini-slots, and the UL reference signal (e.g., SRS) is transmitted with a period of 5 slots. Figure 3B In the example, in time slot #11, resources for UL channels and resources for UL reference signals overlap (or also referred to as conflict, collision). In this case, UL channels including DMRS (e.g., PUCCH and DMRS, or PUSCH and DMRS) are allocated (or scheduled) to avoid resources for UL reference signals, and the UE transmits a second type of UL channel and UL reference signal.

[0130] In this way, when a collision occurs between the second type UL channel with a lower priority and the UL reference signal in a specific resource, channel quality measurement can be continued by giving priority to transmission of the UL reference signal in the specific resource.

[0131] [Option 2-B]

[0132] It can also be controlled so that at least the resources of the UL reference signal are not used for the UL channel (for example, at least one of the PUCCH and the PUSCH), and the UL reference signal does not overlap with the same resources as the DMRS (for example, resource elements (REs)). That is, it can also be controlled so that the PUCCH or PUSCH is allocated in addition to the resources of the UL reference signal, and the DMRS does not overlap with the UL reference signal.

[0133] The UE may control the mapping of UCI (or PUCCH) or UL data (or PUSCH) to resources other than the resources of the UL reference signal. In addition, the UE may also be configured not to send the UL reference signal and the DMRS corresponding to the second type of UL channel (PUCCH or PUSCH) through the same resources (e.g., RE).

[0134] In this way, when a collision occurs between the second type UL channel with a lower priority and the UL reference signal in a specific resource, channel quality measurement can be continued by giving priority to transmission of the UL reference signal in the specific resource.

[0135] [Option 2-C]

[0136] It is also possible to control so that there is no conflict between the second type of UL channel and the UL reference signal. That is, in the case where the second type of UL channel conflicts with the UL reference signal, it is also possible to set it as an error situation. The base station may also control so that there is no conflict between the second type of UL channel and the UL reference signal. For example, the base station may also control so that the second type of UL channel and the UL reference signal do not conflict when the second type of PUSCH and the SRS are sent in the same time slot, so that the SRS is allocated after the second type of PUSCH and the DMRS corresponding to the PUSCH are sent.

[0137] When the second type of UL channel collides with the UL reference signal, the UE may also determine that it is an error situation and perform control so that one or both of them are not sent.

[0138] [Option 2-D]

[0139] In the event of a conflict between the UL channel and the UL reference signal, the UE may also perform control based on the priority set for each of the UL channel category and the UL reference signal category so as to discard one of the UL channel and the UL reference signal. The priority may also be, for example, at least one of HARQ-ACK and SR>SRS>CSI for PUCCH.

[0140] The UE may also control so that the SRS is discarded when a PUCCH or PUSCH having at least one of HARQ-ACK and SR collides with the SRS. In addition, the UE may also control so that the PUCCH is discarded when a PUCCH having only CSI collides with the SRS. In addition, the set priority is not limited to this. The priority may be predefined by the specification or may be set to the UE by the base station through high-layer signaling or the like.

[0141] (change)

[0142] In the first and second aspects described above, different options may be used depending on the transmission conditions or transmission methods. For example, different options may be applied in the following situations where the transmission conditions or transmission methods are different.

[0143] <Case 1: Dynamic DL allocation and DL SPS>

[0144] In the first mode, different options (e.g., any one of options 1-1 to 1-6) may be used when dynamic DL allocation is applied and when DL SPS is applied. For example, the UE may use the first option (e.g., option 1-1) when dynamic DL allocation is applied, and use the second option (e.g., option 1-2) when DL SPS is applied. Of course, the options that can be applied to various situations are not limited thereto.

[0145] <Case 2: PDSCH with corresponding DCI and PDSCH without corresponding DCI>

[0146] In the first mode, different options (for example, any one of options 1-1 to 1-6) may be used for a PDSCH with corresponding DCI (PDSCH with corresponding DCI (PDSCH with corresponding DCI)) and a PDSCH without corresponding DCI (PDSCH without corresponding DCI (PDSCH without corresponding DCI)). For example, the UE may use the first option for a PDSCH with corresponding DCI and the second option for a PDSCH without corresponding DCI.

[0147] <Case 3: PDSCH with and without repeated transmission>

[0148] In the first method, different options (for example, any one of options 1-1 to 1-6) may be used when repeated transmission of PDSCH is applied and when repeated transmission of PDSCH is not applied. For example, the UE may use the first option when repeated transmission of PDSCH is applied and use the second option when repeated transmission of PDSCH is not applied. In addition, PDSCH may be replaced by PDCCH.

[0149] <Case 4: Dynamic UL Allocation and UL SPS>

[0150] In the second mode, different options (for example, any one of options 2-1 to 2-6) may be used when dynamic UL allocation is applied and when UL SPS is applied. For example, the UE may use the first option (for example, option 2-1) when dynamic UL allocation is applied, and use the second option (for example, option 2-2) when UL SPS is applied. Of course, the options that can be applied to various situations are not limited thereto.

[0151] <Case 5: PUSCH with corresponding DCI and PUSCH without corresponding DCI>

[0152] In the second method, different options (for example, any one of options 2-1 to 2-6) may be used for a PUSCH with a corresponding DCI (PUSCH with corresponding DCI (PUSCH with corresponding DCI)) and a PUSCH without a corresponding DCI (PUSCH without corresponding DCI (PUSCH without corresponding DCI)). For example, the UE may use the first option for a PUSCH with a corresponding DCI and the second option for a PUSCH without a corresponding DCI. A PUSCH with a corresponding DCI may also be a PUSCH scheduled through DCI, and a PUSCH without a corresponding DCI may also be a PUSCH based on a set permission that is not scheduled through DCI.

[0153] <Case 6: PUSCH with and without repeated transmission>

[0154] In the second method, different options (for example, any one of options 2-1 to 2-6) may be used when repeated transmission of PUSCH is applied and when repeated transmission of PUSCH is not applied. For example, the UE may use the first option when repeated transmission of PUSCH is applied and use the second option when repeated transmission of PUSCH is not applied. In addition, PUSCH may be replaced by PUCCH.

[0155] <Case 7: CC transmitting channel and reference signal>

[0156] In at least one of the first method and the second method, different options (e.g., any one of options 1-1 to 1-6, options 2-1 to 2-6) may be used when the first type of channel (e.g., URLLC channel) and the reference signal exist in the same CC or cell, and when the first type of channel (e.g., URLLC channel) and the reference signal exist in different CCs or cells. For example, the UE may also use the first option when the first type of channel and the reference signal exist in the same CC or cell, and use the second option when the first type of channel and the reference signal exist in different CCs or cells.

[0157] <Case 8: Frequency band of transmission channel and reference signal>

[0158] In at least one of the first mode and the second mode, when the first type of channel (e.g., URLLC channel) and the reference signal exist in the same frequency band (or frequency range), and when the first type of channel (e.g., URLLC channel) and the reference signal exist in different frequency bands, different options (e.g., any one of options 1-1 to 1-6, options 2-1 to 2-6) may also be used. For example, the UE may also use the first option when the first type of channel and the reference signal exist in the same frequency band, and use the second option when the first type of channel and the reference signal exist in different frequency bands.

[0159] <Case 9: UE transmitting channel and reference signal>

[0160] In at least one of the first method and the second method, different options (for example, any one of options 1-1 to 1-6 and options 2-1 to 2-6) may be used when the conflict between the channel and the reference signal is between the same UE (intra-UE overlapping) and between different UEs (inter-UE overlapping). For example, the UE may use the first option when the conflict between the channel and the reference signal is between the same UE (intra-UE overlapping) and use the second option when the conflict between the channel and the reference signal is between different UEs (inter-UE overlapping).

[0161] (Wireless Communication System)

[0162] Hereinafter, a configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In the wireless communication system, communication is performed using any one or a combination of the wireless communication methods according to the above-described embodiments of the present disclosure.

[0163] Figure 4 1 is a diagram showing an example of a schematic structure of a wireless communication system according to an embodiment. The wireless communication system 1 may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the fifth generation mobile communication system New Radio (5G NR), and the like.

[0164] In addition, the wireless communication system 1 can also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple radio access technologies (Radio Access Technology (RAT)). MR-DC can also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA))) and NR (E-UTRA-NR Dual Connectivity (E-UTRA-NR Dual Connectivity (EN-DC))), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC))), etc.

[0165] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the master node (Master Node (MN)), and the base station (gNB) of NR is the secondary node (Secondary Node (SN)). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0166] The wireless communication system 1 can also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) where both MN and SN are NR base stations (gNB)).

[0167] The wireless communication system 1 may also include: a base station 11 that forms a macro cell C1 with a relatively wide coverage, and a base station 12 (12a-12c) that is configured in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The configuration and number of each cell and the user terminal 20 are not limited to the method shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as the base station 10.

[0168] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).

[0169] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may be a frequency band below 6 GHz (sub-6 GHz), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to this. For example, FR1 may also correspond to a frequency band higher than FR2.

[0170] Furthermore, the user terminal 20 may perform communication in each CC using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0171] Multiple base stations 10 may also be connected by wire (e.g., optical fiber based on Common Public Radio Interface (CPRI)), X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, the base station 11 equivalent to the upper station may also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 equivalent to a relay station may also be referred to as an IAB node.

[0172] The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The core network 30 may also include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0173] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0174] In the wireless communication system 1, a wireless access method based on orthogonal frequency division multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and the uplink (UL), cyclic prefix OFDM (CP-OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. may be used.

[0175] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be applied to the UL and DL radio access schemes.

[0176] In the wireless communication system 1, as downlink channels, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH))), a downlink control channel (Physical Downlink Control Channel (PDCCH)) and the like may be used.

[0177] In addition, in the wireless communication system 1, as uplink channels, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20), an uplink control channel (Physical Uplink Control Channel (PUCCH))), a random access channel (Physical Random Access Channel (PRACH)) and the like may be used.

[0178] The PDSCH is used to transmit user data, high-layer control information, system information block (SIB), etc. The PUSCH is also used to transmit user data, high-layer control information, etc. In addition, the PBCH is also used to transmit the master information block (MIB).

[0179] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of the PDSCH and the PUSCH.

[0180] In addition, the DCI for scheduling PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI for scheduling PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, PDSCH may also be interpreted as DL data, and PUSCH may also be interpreted as UL data.

[0181] In the detection of PDCCH, the control resource set (CORESET) and the search space can also be used. CORESET corresponds to the resources for searching DCI. The search space corresponds to the search area and search method of PDCCH candidates. One CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a certain search space based on the search space setting.

[0182] A search space may also correspond to PDCCH candidates that are consistent with one or more aggregation levels. One or more search spaces may also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting" and the like in the present disclosure may also be interchangeable.

[0183] The PUCCH may also be used to transmit at least one uplink control information (uplink control information (UCI)) including channel state information (CSI), delivery confirmation information (e.g., may also be called hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (Scheduling Request (SR)). The random access preamble code used to establish a connection with a cell may also be transmitted through the PRACH.

[0184] In addition, in the present disclosure, downlink, uplink, etc. may be expressed without "link". In addition, various channels may be expressed without "Physical" at the beginning.

[0185] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. may also be transmitted. In the wireless communication system 1, as DL-RS, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. may also be transmitted.

[0186] The synchronization signal may be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may also be referred to as an SS / PBCH block, SS block (SS Block (SSB)), etc. In addition, SS, SSB, etc. may also be referred to as reference signals.

[0187] In addition, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. can also be transmitted. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0188] (Base Station)

[0189] Figure 5 1 is a diagram showing an example of a structure of a base station involved in one embodiment. The base station 10 includes a control unit 110, a transmitting and receiving unit 120, a transmitting and receiving antenna 130, and a transmission path interface (transmission line interface) 140. In addition, the control unit 110, the transmitting and receiving unit 120, the transmitting and receiving antenna 130, and the transmission path interface 140 may be provided with more than one.

[0190] In addition, in this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it is also assumed that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0191] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on the common knowledge in the technical field to which the present disclosure relates.

[0192] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc. using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be sent as signals, and forward them to the transmission and reception unit 120. The control unit 110 may also perform call processing (setting, release, etc.) of communication channels, state management of the base station 10, management of wireless resources, etc.

[0193] The transmitting and receiving unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measuring unit 123. The baseband unit 121 may also include a transmitting processing unit 1211 and a receiving processing unit 1212. The transmitting and receiving unit 120 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the public knowledge in the technical field involved in the present disclosure.

[0194] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit, or may be configured by a transmitting unit and a receiving unit. The transmitting unit may also be configured by a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured by a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0195] The transmitting / receiving antenna 130 can be constituted by an antenna described based on the common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0196] The transmitting and receiving unit 120 may also transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the above-mentioned uplink channel, uplink reference signal, etc.

[0197] The transmitting and receiving unit 120 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0198] The sending and receiving unit 120 (sending processing unit 1211), for example, may also perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (for example, RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), etc. on the data and control information obtained from the control unit 110 to generate a bit string to be sent.

[0199] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filtering, discrete Fourier transform (DFT)) processing (as needed), inverse fast Fourier transform (IFFT)) processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0200] The transmitting and receiving unit 120 (RF unit 122 ) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0201] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may perform amplification, filtering, demodulation into a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 130 .

[0202] The sending and receiving unit 120 (receiving processing unit 1212) can also apply analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (as needed), filtering processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0203] The transmitting and receiving unit 120 (measuring unit 123) may also implement measurements related to the received signal. For example, the measuring unit 123 may also perform radio resource management (Radio Resource Management (RRM)) measurements, channel state information (CSI) measurements, etc. based on the received signal. The measuring unit 123 may also measure received power (e.g., reference signal received power (Reference Signal Received Power (RSRP))), received quality (e.g., reference signal received quality (Reference Signal Received Quality (RSRQ)), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio (SINR)), signal to noise ratio (Signal to Noise Ratio (SNR))), signal strength (e.g., received signal strength indicator (Received Signal Strength Indicator (RSSI))), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0204] The transmission path interface 140 can also send and receive signals (return signaling) between devices included in the core network 30, other base stations 10, etc., and can also obtain and transmit user data (user plane data) and control plane data for the user terminal 20.

[0205] In addition, the transmitting unit and the receiving unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmitting and receiving unit 120 , the transmitting and receiving antenna 130 , and the transmission path interface 140 .

[0206] In addition, the transmitting and receiving unit 120 may also transmit at least one of a downlink channel and a downlink reference signal. In addition, the transmitting and receiving unit 120 may also receive at least one of an uplink shared channel and an uplink reference signal. The transmitting and receiving unit 120 may also transmit information related to a priority of at least one of a downlink channel and an uplink channel.

[0207] When the downlink channel and the downlink reference signal are set or allocated to the same resource, the control unit 110 may separately set the mapping rule or the receiving action of the UE based on the type of the downlink channel. Alternatively, when the uplink channel and the uplink reference signal are set or allocated to the same resource, the base station 110 may separately set the mapping rule or the sending action of the UE based on the type of the uplink channel.

[0208] (User Terminal)

[0209] Figure 6 The user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. In addition, the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may be provided in one or more pieces.

[0210] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also assumed that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0211] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on the common knowledge in the technical field to which the present disclosure relates.

[0212] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission and reception unit 220.

[0213] The transmitting and receiving unit 220 may also include a baseband unit 221, an RF unit 222, and a measuring unit 223. The baseband unit 221 may also include a transmitting processing unit 2211 and a receiving processing unit 2212. The transmitting and receiving unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the public knowledge in the technical field involved in the present disclosure.

[0214] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit, or may be configured by a transmitting unit and a receiving unit. The transmitting unit may also be configured by a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be configured by a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0215] The transmitting / receiving antenna 230 can be constituted by an antenna described based on the common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0216] The transmitting and receiving unit 220 may also receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0217] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0218] The sending and receiving unit 220 (sending processing unit 2211) can also perform PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210 to generate a bit string to be sent.

[0219] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filtering, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0220] In addition, whether to apply DFT processing may also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is activated (enabled), the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing without performing DFT processing.

[0221] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0222] On the other hand, the transmitting and receiving unit 220 (RF unit 222 ) may perform amplification, filtering, demodulation into a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 230 .

[0223] The sending and receiving unit 220 (receiving processing unit 2212) can also apply analog-to-digital conversion, FFT processing, IDFT processing (as needed), filtering processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0224] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to the received signal. For example, the measuring unit 223 may also perform RRM measurements, CSI measurements, etc. based on the received signal. The measuring unit 223 may also measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 210.

[0225] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0226] In addition, the transmitting and receiving unit 220 may also receive at least one of a downlink channel and a downlink reference signal. In addition, the transmitting and receiving unit 220 may also transmit at least one of an uplink shared channel and an uplink reference signal. The transmitting and receiving unit 220 may also receive information related to a priority of at least one of a downlink channel and an uplink channel.

[0227] The control unit 210 may also perform control so that, when a downlink channel and a downlink reference signal are set or allocated to the same resource, reception operations are performed separately based on the type of downlink channel (for example, different reception operations are performed for each type).

[0228] The downlink reference signal may be discarded when the first downlink channel and the downlink reference signal are set or allocated to the same resource, and the downlink reference signal may be sent when a second downlink channel of a type different from the first downlink channel and the downlink reference signal are set or allocated to the same resource.

[0229] Alternatively, it may be controlled so that when a first downlink channel and a downlink reference signal are set or allocated to the same resource, the resources of the downlink reference signal are used for the first downlink channel, and when a second downlink channel of a type different from the first downlink channel and a downlink reference signal are set or allocated to the same resource, the resources of the downlink reference signal are not used for the second downlink channel.

[0230] Alternatively, it may be controlled so that when the first downlink channel and the downlink reference signal are set or allocated to the same resources, the code elements of the downlink reference signal are not used for the first downlink channel, and when a second downlink channel of a type different from the first downlink channel and the downlink reference signal are set or allocated to the same resources, the resources of the downlink reference signal are not used for the second downlink channel.

[0231] The control unit 210 may also select a receiving action based on specific conditions when the first downlink channel and the downlink reference signal are set or allocated to the same resource, and select a specific receiving action when a second downlink channel of a type different from the first downlink channel and a downlink reference signal are set or allocated to the same resource.

[0232] The control unit 210 may also control so that when the uplink channel and the uplink reference signal are set or allocated to the same resource, the transmission actions are performed separately based on the type of the uplink channel (for example, different transmission actions are performed for each type).

[0233] The control unit 210 may also perform control so that when the first uplink channel and the uplink reference signal are set or allocated to the same resource, the uplink reference signal is discarded, and when a second uplink channel of a type different from the first uplink channel and the uplink reference signal are set or allocated to the same resource, the uplink reference signal is sent.

[0234] Alternatively, the control unit 210 may also perform control so that, when the first uplink channel and the uplink reference signal are set or allocated to the same resource, the first uplink channel is allocated to the resource of the uplink reference signal, and when a second uplink channel of a type different from the first uplink channel and the uplink reference signal are set or allocated to the same resource, the second uplink channel is not allocated to the resource of the uplink reference signal.

[0235] Alternatively, the control unit 210 may also perform control so that, when the first uplink channel and the uplink reference signal are set or allocated to the same time resource, the first uplink channel is allocated to a codeword different from the codeword of the uplink reference signal, and when a second uplink channel of a type different from the first uplink channel and the uplink reference signal are set or allocated to the same resource, the second uplink channel is not allocated to the resource of the uplink reference signal.

[0236] Alternatively, the control unit 210 may also select a sending action based on specific conditions when the first uplink channel and the uplink reference signal are set or allocated to the same resource, and select a specific sending action when a second uplink channel of a type different from the first uplink channel and the uplink reference signal are set or allocated to the same resource.

[0237] (Hardware Structure)

[0238] In addition, the block diagram used in the description of the above-mentioned embodiment shows a block of a functional unit. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented by a device that is physically or logically combined, or two or more devices that are physically or logically separated can be directly or indirectly (for example, by wired, wireless, etc.) connected and implemented by these multiple devices. The functional block can also be implemented by combining the above-mentioned one device or the above-mentioned multiple devices with software.

[0239] Here, the functions include judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that implements a sending function may also be referred to as a transmitting unit, a transmitter, etc. Any one of them is as described above, and the implementation method is not particularly limited.

[0240] For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 7 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0241] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, unit, etc. are interchangeable. The hardware structure of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.

[0242] For example, only one processor 1001 is shown, but there may be multiple processors. In addition, the processing may be performed by one processor, or may be performed by two or more processors simultaneously, sequentially, or in other ways. In addition, the processor 1001 may also be implemented by one or more chips.

[0243] The functions of the base station 10 and the user terminal 20 are realized, for example, by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0244] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), the sending and receiving unit 120 (220), etc. may also be implemented by the processor 1001.

[0245] In addition, the processor 1001 reads the program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and performs various processes based on them. As a program, a program that enables a computer to perform at least a part of the operations described in the above-mentioned embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same can be implemented for other functional blocks.

[0246] The memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a random access memory (RAM), or other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing the wireless communication method involved in one embodiment of the present disclosure.

[0247] The storage 1003 may also be a computer-readable recording medium, such as a flexible disk, a floppy disk, an optical disk (such as a compact disk (Compact Disc ROM (CD-ROM)), etc.), a digital versatile disk, a Blu-ray (registered trademark) disk, a removable disk, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, a key drive), a magnetic stripe, a database, a server, or at least one of other appropriate storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0248] The communication device 1004 is hardware (transmitting and receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, etc. In order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)), the communication device 1004 can also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-mentioned transmitting and receiving unit 120 (220), the transmitting and receiving antenna 130 (230), etc. can also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) can also be installed by the transmitting unit 120a (220a) and the receiving unit 120b (220b) separately physically or logically.

[0249] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that implements output to the outside (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.). In addition, the input device 1005 and the output device 1006 may also be an integrated structure (e.g., a touch panel).

[0250] In addition, the processor 1001, the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or different buses may be used between the devices.

[0251] In addition, the base station 10 and the user terminal 20 may also be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), etc., and the hardware may also be used to implement a part or all of each functional block. For example, the processor 1001 may also be implemented by at least one of these hardware.

[0252] (Variation Example)

[0253] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure may also be replaced with terms having the same or similar meanings. For example, channels, code elements, and signals (signals or signaling) may also be replaced with each other. In addition, a signal may also be a message. A reference signal may also be referred to as RS, and may also be referred to as a pilot, a pilot signal, etc. depending on the standard applied. In addition, a component carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0254] A wireless frame may also be composed of one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) constituting a wireless frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more time slots in the time domain. A subframe may also be a fixed time length (e.g., 1 ms) that is not dependent on a parameter set (numerology).

[0255] Here, the parameter set may also refer to a communication parameter applied in at least one of the transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of the subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, wireless frame structure, specific filtering processing performed by the transmitter and receiver in the frequency domain, specific windowing processing performed by the transmitter and receiver in the time domain, etc.

[0256] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on a parameter set.

[0257] A time slot may also include multiple mini-slots. Each mini-slot may also be composed of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be composed of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type B.

[0258] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols may also be referred to by their respective names. In addition, time units such as frames, subframes, time slots, mini-time slots, and symbols in the present disclosure may also be interchangeable.

[0259] For example, a subframe may also be referred to as a TTI, a plurality of consecutive subframes may also be referred to as a TTI, and a time slot or a mini time slot may also be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in the existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI may also be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0260] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station schedules each user terminal to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited to this.

[0261] TTI may also be a transmission time unit for a data packet (transport block), a code block, a code word, etc. that has been channel-coded, and may also be a processing unit for scheduling, link adaptation, etc. In addition, when TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may also be shorter than the TTI.

[0262] In addition, when one time slot or one mini time slot is referred to as TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) may also be the minimum time unit of scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit of scheduling may also be controlled.

[0263] A TTI having a time length of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini time slot, a sub time slot, a time slot, etc.

[0264] In addition, long TTI (e.g., normal TTI, subframe, etc.) can also be interpreted as a TTI with a time length exceeding 1 ms, and short TTI (e.g., shortened TTI, etc.) can also be interpreted as a TTI with a TTI length less than that of long TTI and greater than 1 ms.

[0265] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may also include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB may also be the same regardless of the parameter set, for example, 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0266] In addition, an RB may also include one or more symbols in the time domain, and may also be the length of a slot, a mini-slot, a subframe, or a TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks, respectively.

[0267] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0268] In addition, a resource block may also be composed of one or more resource elements (RE). For example, one RE may also be a radio resource region of one subcarrier and one symbol.

[0269] A Bandwidth Part (BWP) (also referred to as a partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, a common RB may also be identified by an index of the RB relative to a common reference point of the carrier. PRBs may also be defined in a BWP and numbered within the BWP.

[0270] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured in one carrier.

[0271] At least one of the set BWPs may also be activated, and the UE may not assume that it will send or receive a specific signal / channel outside the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be interpreted as "BWP".

[0272] In addition, the above-mentioned structures such as radio frames, subframes, time slots, mini-time slots and symbols are only examples. For example, the number of subframes included in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots included in a time slot, the number of symbols and RBs included in a time slot or mini-time slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.

[0273] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may also be indicated by a specific index.

[0274] In the present disclosure, the names used for parameters, etc. are not limiting in all respects. In addition, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore, the various names assigned to these various channels and information elements are not limiting in all respects.

[0275] Information, signals, etc. described in the present disclosure may also be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0276] Furthermore, information, signals, etc. can be output from a high layer (upper layer) to a low layer (lower layer) or from a low layer to a high layer. Information, signals, etc. can also be input and output via a plurality of network nodes.

[0277] The input and output information, signals, etc. may be stored in a specific location (e.g., a memory), or may be managed using a management table. The input and output information, signals, etc. may be overwritten, updated, or appended. The output information, signals, etc. may also be deleted. The input information, signals, etc. may also be sent to other devices.

[0278] The notification of information is not limited to the methods / implementations described in the present disclosure, and may also be performed by other methods. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI))), high-layer signaling (e.g., Radio Resource Control (RRC)) signaling, broadcast information (Master Information Block (MIB)), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals or a combination thereof.

[0279] In addition, physical layer signaling may also be referred to as layer 1 / layer 2 (Layer 1 / Layer 2 (L1 / L2)) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. In addition, RRC signaling may also be referred to as an RRC message, such as an RRC connection establishment (RRC Connection Setup) message, an RRC connection reconstruction (RRC Connection Reconfiguration) message, etc. In addition, MAC signaling may also be notified using, for example, a MAC control element (MACControl Element (CE)).

[0280] In addition, notification of specific information (for example, notification of "it is X") is not limited to explicit notification, and may also be performed implicitly (for example, by not notifying the specific information or by notifying other information).

[0281] The determination can be made by a value represented by a bit (0 or 1), by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a specific value).

[0282] Whether software is called software, firmware, middle-ware, microcode, hardware description language, or other names, it should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, program, sub-program, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, execution threads, procedures, functions, etc.

[0283] In addition, software, instructions, information, etc. may also be sent and received via a transmission medium. For example, when software is sent from a website, server, or other remote source using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0284] The terms "system" and "network" used in the present disclosure can be used interchangeably. "Network" may also refer to a device (eg, a base station) included in the network.

[0285] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL)", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", and "panel" can be used interchangeably.

[0286] In the present disclosure, terms such as "base station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "cell", "sector", "cell group", "carrier", and "component carrier" can be used interchangeably. There are also cases where base stations are referred to by terms such as macro cell, small cell, micro-micro cell, and micro-micro cell.

[0287] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the entirety of the coverage area of ​​at least one of a base station and a base station subsystem that provides communication services within the coverage area.

[0288] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” can be used interchangeably.

[0289] In some cases, the mobile station is also referred to as a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a hand set, a user agent, a mobile client, a client, or some other appropriate terminology.

[0290] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station may also be a device carried in a mobile body, a mobile body, etc. The mobile body may be a means of transportation (e.g., a vehicle, an airplane, etc.), a mobile body that moves in an unmanned manner (e.g., a drone, an autonomous driving vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move when performing a communication operation. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0291] In addition, the base station in the present disclosure can also be interpreted as a user terminal. For example, the various methods / implementations of the present disclosure can also be applied to a structure in which the communication between a base station and a user terminal is replaced by the communication between multiple user terminals (for example, it can also be called device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the user terminal 20 has the functions of the above-mentioned base station 10. In addition, expressions such as "uplink" and "downlink" can also be interpreted as expressions corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can also be interpreted as side channels.

[0292] Likewise, the user terminal in the present disclosure may also be interpreted as a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0293] In the present disclosure, the actions are assumed to be performed by the base station, and sometimes by its upper node according to the circumstances. Obviously, in a network including one or more network nodes having a base station, various actions performed for communication with a terminal can be performed by the base station, one or more network nodes other than the base station (for example, Mobility Management Entity (MME)), Serving-Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0294] The various methods / implementations described in this disclosure may be used individually or in combination, and may be used in a switched manner as the method is executed. In addition, the processing procedures, sequences, flow charts, etc. of the various methods / implementations described in this disclosure may be reversed in order as long as they are not contradictory. For example, for the methods described in this disclosure, the elements of various steps are presented in an illustrative order, but are not limited to the specific order presented.

[0295] The various modes and implementation modes described in the present disclosure may also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, and next-generation systems based on these. In addition, multiple systems can also be combined (for example, LTE or LTE-A, combination with 5G, etc.) for application.

[0296] The term “based on” used in the present disclosure does not mean “based only on” unless otherwise specified. In other words, the term “based on” means both “based only on” and “based at least on”.

[0297] Any reference to an element using the terms "first", "second", etc. used in this disclosure does not fully define the amount or order of these elements. These terms can be used in this disclosure as a convenient method to distinguish between two or more elements. Therefore, reference to a first and a second element does not mean that only two elements can be used, or that the first element must take precedence over the second element in some form.

[0298] The term "determining" as used in this disclosure may include a variety of actions in some cases. For example, "determining" may also be viewed as "judging", calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database, or other data structure), ascertaining, etc.

[0299] In addition, "judgment (decision)" can also be regarded as a situation of "judgment (decision)" on receiving (for example, receiving information), transmitting (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc.

[0300] In addition, "judgment (decision)" can also be regarded as a situation in which "judgment (decision)" is made on resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment (decision)" can also be regarded as a situation in which "judgment (decision)" is made on some actions.

[0301] In addition, "judgment (decision)" can also be interpreted as "assuming", "expecting", "considering", etc.

[0302] The terms "connected", "coupled", or all their variations used in this disclosure mean all direct or indirect connections or combinations between two or more elements, and may include the situation where one or more intermediate elements exist between two elements that are "connected" or "coupled" to each other. The combination or connection between elements may be physical, logical, or a combination of these. For example, "connection" may also be interpreted as "access".

[0303] In the present disclosure, when two elements are connected, it can be considered that they are "connected" or "combined" to each other using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, light (both visible and invisible) region, etc. as several non-limiting and non-inclusive examples.

[0304] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other". In addition, the term may also mean "A and B are different from C, respectively". Terms such as "separate" and "combined" may also be interpreted as "different".

[0305] In the present disclosure, when the terms "include", "including", and their variations are used, these terms, like the term "comprising", have an inclusive meaning. Furthermore, the term "or" used in the present disclosure does not mean an exclusive OR.

[0306] In the present disclosure, when an article is added by translation like a, an, and the in English, for example, the present disclosure may also include a case where the noun following the article is in plural form.

[0307] The invention involved in the present disclosure has been described in detail above, but it is obvious to those skilled in the art that the invention involved in the present disclosure is not limited to the embodiments described in the present disclosure. The invention involved in the present disclosure can be implemented as a modified and altered mode without departing from the gist and scope of the present invention determined based on the description of the claims. Therefore, the description of the present disclosure is for the purpose of illustrative description and does not have any limiting meaning on the invention involved in the present disclosure.< / prb>

Claims

1. A terminal, characterized in that: include: A sending unit, sending at least one of an uplink channel and an uplink reference signal; as well as a control unit, performing different sending actions based on the uplink channels with different priorities, The control unit controls so that when a first uplink channel and the uplink reference signal are set or allocated to the same resource, the uplink reference signal is discarded, and when a second uplink channel with a lower priority than the first uplink channel and the uplink reference signal are sent in the same time slot, the uplink reference signal is set to be sent after the second uplink channel.

2. The terminal according to claim 1, characterized in that The first uplink channel is an uplink control channel PUCCH having at least one of HARQ-ACK and a scheduling request SR.

3. A wireless communication method, characterized in that: include: The step of sending at least one of an uplink channel and an uplink reference signal; as well as The step of performing different sending actions based on the uplink channels with different priorities, Control is performed so that when a first uplink channel and the uplink reference signal are set or allocated to the same resource, the uplink reference signal is discarded, and when a second uplink channel with a lower priority than the first uplink channel and the uplink reference signal are sent in the same time slot, the uplink reference signal is set to be sent after the second uplink channel.

4. A base station, characterized in that: include: A receiving unit, receiving at least one of an uplink channel and an uplink reference signal; as well as A control unit performs different receiving actions based on the uplink channels with different priorities, Control is performed so that when a first uplink channel and the uplink reference signal are set or allocated to the same resource, the uplink reference signal is discarded by the terminal, and when a second uplink channel having a lower priority than the first uplink channel and the uplink reference signal are sent in the same time slot, the uplink reference signal is set to be received by the receiving unit after the second uplink channel.

5. A system comprising a terminal and a base station, The terminal comprises: A sending unit, sending at least one of an uplink channel and an uplink reference signal; as well as a control unit, performing different sending actions based on the uplink channels with different priorities, The control unit controls so that, when a first uplink channel and the uplink reference signal are set or allocated to the same resource, the uplink reference signal is discarded, and when a second uplink channel having a lower priority than the first uplink channel and the uplink reference signal are sent in the same time slot, the uplink reference signal is set to be sent after the second uplink channel, The base station comprises: A receiving unit receives at least one of the uplink channel and the uplink reference signal.

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