KR20220024243A - Methods for controlling uplink data channel trasmission power and Apparatus thereof - Google Patents

Abstract

Embodiments of the present invention relate to a method and apparatus for efficiently multiplexing uplink data transmission resources between terminals having different latency requirements, or efficiently controlling the power of an uplink data channel in terminals having different latency requirements. A method for a terminal to control transmission power of an uplink data channel includes the steps of: applying power control to the transmission of an uplink data channel; and transmitting the uplink data channel with transmission power to which power control is applied.

Description

Method and apparatus for controlling uplink data channel transmission power

The present embodiments propose a method and apparatus for controlling transmission power of an uplink data channel in a next-generation radio access network (hereinafter, referred to as “New Radio [NR]”).

3GPP recently approved "Study on New Radio Access Technology", a study item for research on next-generation radio access technology (that is, 5G radio access technology), and based on this, RAN WG1 for NR (New Radio) Designs for a frame structure, channel coding & modulation, waveform & multiple access scheme, and the like are in progress. NR is required to be designed to satisfy various QoS requirements required for each segmented and detailed service scenario as well as an improved data rate compared to LTE/LTE-Advanced.

eMBB (enhancement Mobile BroadBand), mMTC (massive machine type communication), and URLLC (Ultra Reliable and Low Latency Communications) have been defined as representative usage scenarios of NR, and the requirements for each usage scenario are satisfied. As a method for this, a flexible frame structure design compared to LTE/LTE-Advanced is required.

Since each service scenario has different requirements for data rates, latency, reliability, coverage, etc., through the frequency band constituting an arbitrary NR system As a method to efficiently satisfy the needs of each usage scenario, different numerology (eg, subcarrier spacing, subframe, TTI (Transmission Time Interval), etc.) based There is a need for a method for efficiently multiplexing a radio resource unit of .

An object of the present embodiments is to provide a method and apparatus for efficiently controlling transmission power of an uplink data channel in a next-generation wireless network.

An embodiment devised to solve the above problem is a method for a terminal to control transmission power of an uplink data channel, the step of transmitting an uplink data channel according to a first transmission power control, an uplink discontinuous TPC command It provides a method comprising the steps of: receiving and adjusting the transmit power of an uplink data channel being transmitted based on the uplink discontinuous TPC command to a second transmit power control. In addition, according to an embodiment, a base station provides a terminal A method for controlling an uplink data channel of to provide a method comprising the step of transmitting an uplink discontinuous TPC command.

Also, according to an embodiment, in a terminal for transmitting uplink data, a transmitter for transmitting an uplink data channel according to a first transmission power control, a receiver for receiving an uplink discontinuous TPC command, and an uplink discontinuous TPC command based on the Provided is a terminal including a control unit for adjusting the transmission power of the uplink data channel being transmitted through a second transmission power control.

In addition, in an embodiment, in a base station for controlling uplink data transmission of a terminal, the monitoring setup information is provided to a control unit configuring monitoring setup information for uplink discontinuous TPC commands and the terminal transmitting the uplink data channel. There is provided a base station including a transmitter for transmitting and transmitting the uplink discontinuous TPC command based on the monitoring configuration information.

In addition, an embodiment provides a method for a terminal to control transmission power of an uplink data channel, applying different power controls to transmission of an uplink data channel and selecting an uplink data channel to which different power controls are applied. A method comprising the step of transmitting is provided.

In addition, an embodiment provides a method for a base station to receive an uplink data channel, the step of explicitly transmitting or implicitly instructing the terminal to control information instructing different power control on the uplink data channel to the terminal; Provided is a method comprising the step of receiving an uplink data channel to which different power controls are applied to the link data channel.

Also, according to an embodiment, a terminal for controlling transmission power of an uplink data channel includes a controller for applying different power controls to an uplink data channel and a transmitter for transmitting an uplink data channel to which different power controls are applied. It provides a terminal that

Also, an embodiment is a base station receiving an uplink data channel, and a transmitter and an uplink data channel that explicitly transmit control information instructing different power control on the uplink data channel to the terminal or implicitly instruct the terminal To provide a base station including a receiver for receiving an uplink data channel to which different power control is applied.

According to the present embodiments, it is possible to efficiently control the transmission power of the uplink data channel in the next-generation wireless network.

1 is a diagram schematically illustrating a structure of an NR wireless communication system to which this embodiment can be applied.
2 is a diagram for explaining a frame structure in an NR system to which this embodiment can be applied.
3 is a diagram for explaining a resource grid supported by a radio access technology to which this embodiment can be applied.
4 is a diagram for explaining a bandwidth part supported by a radio access technology to which the present embodiment can be applied.
5 is a diagram exemplarily illustrating a synchronization signal block in a radio access technology to which the present embodiment can be applied.
6 is a diagram for explaining a random access procedure in a radio access technology to which this embodiment can be applied.
7 is a diagram for explaining CORESET.
8 is a diagram illustrating an example of symbol level alignment among different SCSs in different SCSs to which this embodiment can be applied.
10 is a diagram illustrating an embodiment of UL cancellation to which Embodiment 1 can be applied.
11 is a diagram illustrating another embodiment of UL cancellation to which Embodiment 1 may be applied.
12 is a diagram illustrating another embodiment of uplink cancellation (UL cancellation) to which Embodiment 1 may be applied.
13 is a diagram illustrating another embodiment of uplink cancellation (UL cancellation) to which Embodiment 1 may be applied.
14 is a diagram illustrating an embodiment of PUSCH transmission power readjustment according to a discontinuous TPC command to which Embodiment 2 may be applied.
15 and 16 are diagrams illustrating another embodiment of PUSCH transmission power readjustment according to a discontinuous TPC command to which Embodiment 2 may be applied.
17 is a flowchart of a method for a terminal to control transmission power of an uplink data channel in Embodiment 2;
18 is a flowchart of a method for a base station to control an uplink data channel of a terminal in Embodiment 2;
19 is a diagram showing the configuration of a base station according to the second embodiment.
20 is a diagram showing the configuration of a user terminal according to the second embodiment.
21 is a diagram illustrating a concept of a multi-transmission power control procedure based on a reliability request to which Embodiment 3 can be applied.
22 is a flowchart of a method for a terminal to control transmission power of an uplink data channel in the third embodiment.
23 is a flowchart of a method for a base station to receive an uplink data channel in Embodiment 3;
24 is a diagram showing the configuration of a base station according to the third embodiment.
25 is a diagram showing the configuration of a user terminal according to the third embodiment.

Hereinafter, some embodiments of the present technical idea will be described in detail with reference to exemplary drawings. In adding reference numerals to components of each drawing, the same components may have the same reference numerals as much as possible even though they are indicated in different drawings. In addition, in describing the present technical idea, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present technical idea, the detailed description may be omitted.

In addition, in describing the components of the present embodiments, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, order, or number of the elements are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but other components may be interposed between each component. It should be understood that each component may be “interposed” or “connected”, “coupled” or “connected” through another component.

In addition, terms and technical names used in this specification are for describing specific embodiments, and technical ideas are not limited to the terms. The terms described below may be interpreted as meanings generally understood by those of ordinary skill in the technical field to which the present technical idea belongs, unless otherwise defined. When the term is an incorrect technical term that does not accurately express the present technical idea, it should be understood by being replaced with a technical term that can be correctly understood by those skilled in the art. In addition, general terms used in this specification should be interpreted according to the definition in the dictionary or according to the context before and after, and should not be interpreted in an excessively reduced meaning.

A wireless communication system in the present specification refers to a system for providing various communication services such as voice and data packets using radio resources, and may include a terminal, a base station, and a core network.

The present embodiments disclosed below may be applied to a wireless communication system using various wireless access technologies. For example, the present embodiments are CDMA (code division multiple access), FDMA (frequency division multiple access), TDMA (time division multiple access), OFDMA (orthogonal frequency division multiple access), SC-FDMA (single carrier frequency division multiple access) It can be applied to various wireless access technologies, such as CDMA may be implemented with a radio technology such as universal terrestrial radio access (UTRA) or CDMA2000. TDMA may be implemented with a radio technology such as global system for mobile communications (GSM)/general packet radio service (GPRS)/enhanced datarates for GSM evolution (EDGE). OFDMA may be implemented with a radio technology such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and evolved UTRA (E-UTRA). IEEE 802.16m is an evolution of IEEE 802.16e, and provides backward compatibility with a system based on IEEE 802.16e. UTRA is part of the universal mobile telecommunications system (UMTS). 3rd generation partnership project (3GPP) long term evolution (LTE) is a part of evolved UMTS (E-UMTS) that uses evolved-UMTSterrestrial radio access (E-UTRA), and employs OFDMA in the downlink and SC- FDMA is employed. As such, the present embodiments may be applied to currently disclosed or commercialized radio access technologies, or may be applied to radio access technologies currently under development or to be developed in the future.

On the other hand, in the present specification, a terminal is a comprehensive concept meaning a device including a wireless communication module that performs communication with a base station in a wireless communication system, and is a UE in WCDMA, LTE, HSPA, and IMT-2020 (5G or New Radio). (User Equipment), of course, should be interpreted as a concept including all of MS (Mobile Station), UT (User Terminal), SS (Subscriber Station), wireless device, etc. in GSM. In addition, the terminal may be a user's portable device such as a smart phone depending on the type of use, and in a V2X communication system may mean a vehicle, a device including a wireless communication module in the vehicle, and the like. In addition, in the case of a machine type communication (Machine Type Communication) system, it may mean an MTC terminal, an M2M terminal, etc. equipped with a communication module to perform machine type communication.

A base station or cell of the present specification refers to an end that communicates with a terminal in terms of a network, a Node-B (Node-B), an evolved Node-B (eNB), gNode-B (gNB), a Low Power Node (LPN), Sector, site, various types of antennas, base transceiver system (BTS), access point, point (eg, transmission point, reception point, transmission/reception point), relay node ), mega cell, macro cell, micro cell, pico cell, femto cell, RRH (Remote Radio Head), RU (Radio Unit), small cell (small cell), such as a variety of coverage areas.

In the various cells listed above, since there is a base station controlling each cell, the base station can be interpreted in two meanings. 1) in relation to the radio area, it may be the device itself providing a mega cell, a macro cell, a micro cell, a pico cell, a femto cell, or a small cell, or 2) may indicate the radio area itself. In 1), the devices providing a predetermined radio area are controlled by the same entity, or all devices interacting to form a radio area cooperatively are directed to the base station. A point, a transmission/reception point, a transmission point, a reception point, etc. become an embodiment of a base station according to a configuration method of a wireless area. In 2), the radio area itself in which signals are received or transmitted from the point of view of the user terminal or the neighboring base station may be indicated to the base station.

In the present specification, a cell is a component carrier having a coverage of a signal transmitted from a transmission/reception point or a coverage of a signal transmitted from a transmission/reception point (transmission point or transmission/reception point), and the transmission/reception point itself. can

The uplink (Uplink, UL, or uplink) refers to a method of transmitting and receiving data by the terminal to the base station, and the downlink (Downlink, DL, or downlink) refers to a method of transmitting and receiving data to the terminal by the base station do. Downlink may mean a communication or communication path from a multi-transmission/reception point to a terminal, and uplink may mean a communication or communication path from a terminal to a multi-transmission/reception point. In this case, in the downlink, the transmitter may be a part of multiple transmission/reception points, and the receiver may be a part of the terminal. In addition, in the uplink, the transmitter may be a part of the terminal, and the receiver may be a part of the multi-transmission/reception point.

The uplink and the downlink transmit and receive control information through a control channel such as a Physical Downlink Control CHannel (PDCCH) and a Physical Uplink Control CHannel (PUCCH), and a Physical Downlink Shared CHannel (PDSCH), a Physical Uplink Shared CHannel (PUSCH), etc. Data is transmitted and received by configuring the same data channel. Hereinafter, a situation in which signals are transmitted and received through channels such as PUCCH, PUSCH, PDCCH, and PDSCH may be expressed in the form of 'transmitting and receiving PUCCH, PUSCH, PDCCH and PDSCH'. do.

For clarity of explanation, the present technical idea is mainly described below for a 3GPP LTE/LTE-A/NR (New RAT) communication system, but the present technical features are not limited thereto.

After research on 4G (4th-Generation) communication technology, 3GPP is conducting research on 5G (5th-Generation) communication technology to meet the requirements of ITU-R's next-generation wireless access technology. Specifically, 3GPP is conducting research on LTE-A pro, which improved LTE-Advanced technology to meet the requirements of ITU-R as a 5G communication technology, and new NR communication technology separate from 4G communication technology. LTE-A pro and NR are both expected to be submitted as 5G communication technology, but hereinafter, for convenience of description, the present embodiments will be described focusing on NR.

In the NR operation scenario, various operation scenarios were defined by adding consideration of satellites, automobiles, and new verticals to the existing 4G LTE scenarios. It is deployed in a range and supports the mMTC (Massive Machine Communication) scenario that requires a low data rate and asynchronous connection, and the URLLC (Ultra Reliability and Low Latency) scenario that requires high responsiveness and reliability and supports high-speed mobility. .

To satisfy these scenarios, NR developed a wireless communication system with new waveform and frame structure technology, low latency technology, mmWave support technology, and forward compatible technology. start In particular, the NR system presents various technical changes in terms of flexibility to provide forward compatibility. The main technical features will be described with reference to the drawings below.

<Normal NR system>

1 is a diagram schematically illustrating a structure of an NR system to which this embodiment can be applied.

1, the NR system is divided into a 5G Core Network (5GC) and an NR-RAN part, and the NG-RAN controls the user plane (SDAP/PDCP/RLC/MAC/PHY) and UE (User Equipment) It consists of gNBs and ng-eNBs that provide planar (RRC) protocol termination. The gNB interconnects or gNBs and ng-eNBs are interconnected via an Xn interface. gNB and ng-eNB are each connected to 5GC through the NG interface. 5GC may be configured to include an Access and Mobility Management Function (AMF) in charge of a control plane such as terminal access and mobility control functions, and a User Plane Function (UPF) in charge of a control function for user data. NR includes support for both the frequency band below 6 GHz (FR1, Frequency Range 1) and the frequency band above 6 GHz (FR2, Frequency Range 2).

gNB means a base station that provides NR user plane and control plane protocol termination to a terminal, and ng-eNB means a base station that provides E-UTRA user plane and control plane protocol termination to a terminal. The base station described in this specification should be understood as encompassing gNB and ng-eNB, and may be used as a meaning to distinguish gNB or ng-eNB as needed.

<NR Waveform, Pneumologic and Frame Structure>

In NR, a CP-OFDM waveform using a cyclic prefix is used for downlink transmission, and CP-OFDM or DFT-s-OFDM is used for uplink transmission. OFDM technology is easy to combine with MIMO (Multiple Input Multiple Output), and has advantages of using a low-complexity receiver with high frequency efficiency.

Meanwhile, in NR, since the requirements for data rate, delay rate, coverage, etc. are different for each of the three scenarios described above, it is necessary to efficiently satisfy the requirements for each scenario through the frequency band constituting an arbitrary NR system. . To this end, a technique for efficiently multiplexing a plurality of different numerology-based radio resources has been proposed.

값이 2의 지수 값으로 사용되어 지수적으로 변경된다.Specifically, the NR transmission numerology is determined based on sub-carrier spacing and cyclic prefix (CP), and is based on 15 kHz as shown in Table 1 below.

The value is used as an exponent value of 2 to change exponentially.

subcarrier spacing Cyclic prefix Supported for data Supported for synch 0 15 Normal Yes Yes One 30 Normal Yes Yes 2 60 Normal, Extended Yes No 3 120 Normal Yes Yes 4 240 Normal No Yes

As shown in Table 1 above, the NR numerology can be divided into five types according to the subcarrier spacing. This is different from the fact that the subcarrier interval of LTE, one of the 4G communication technologies, is fixed at 15 kHz. Specifically, subcarrier intervals used for data transmission in NR are 15, 30, 60, and 120 kHz, and subcarrier intervals used for synchronization signal transmission are 15, 30, 120 and 240 kHz. In addition, the extended CP is applied only to the 60khz subcarrier interval. On the other hand, as for the frame structure in NR, a frame having a length of 10 ms is defined, which is composed of 10 subframes having the same length of 1 ms. One frame can be divided into half frames of 5 ms, and each half frame includes 5 subframes. In the case of a 15 kHz subcarrier interval, one subframe consists of one slot, and each slot consists of 14 OFDM symbols. 2 is a diagram for explaining a frame structure in an NR system to which this embodiment can be applied. Referring to FIG. 2 , a slot is fixedly composed of 14 OFDM symbols in the case of a normal CP, but the length of the slot may vary according to a subcarrier interval. For example, in the case of a numerology having a 15 kHz subcarrier interval, the slot is 1 ms long and is configured with the same length as the subframe. Contrary to this, in the case of numerology having a 30 kHz subcarrier interval, a slot consists of 14 OFDM symbols, but two slots may be included in one subframe with a length of 0.5 ms. That is, the subframe and the frame are defined to have a fixed time length, and the slot is defined by the number of symbols, so that the time length may vary according to the subcarrier interval. Meanwhile, NR defines a basic unit of scheduling as a slot, and also introduces a mini-slot (or a sub-slot or a non-slot based schedule) in order to reduce transmission delay in a radio section. When a wide subcarrier interval is used, the length of one slot is shortened in inverse proportion, so that transmission delay in a radio section can be reduced. The mini-slot (or sub-slot) is for efficient support of the URLLC scenario and can be scheduled in units of 2, 4, or 7 symbols.

Also, unlike LTE, NR defines uplink and downlink resource allocation at a symbol level within one slot. In order to reduce the HARQ delay, a slot structure capable of transmitting HARQ ACK/NACK directly within a transmission slot has been defined, and this slot structure will be described as a self-contained structure.

NR is designed to support a total of 256 slot formats, of which 62 slot formats are used in Rel-15. In addition, a common frame structure constituting an FDD or TDD frame is supported through a combination of various slots. For example, a slot structure in which all symbols of a slot are set to downlink, a slot structure in which all symbols are set to uplink, and a slot structure in which downlink symbols and uplink symbols are combined are supported. In addition, NR supports that data transmission is scheduled to be distributed in one or more slots. Accordingly, the base station may inform the terminal whether the slot is a downlink slot, an uplink slot, or a flexible slot using a slot format indicator (SFI). The base station may indicate the slot format by indicating the index of the table configured through UE-specific RRC signaling using SFI, and may indicate dynamically through DCI (Downlink Control Information) or statically or semi-statically through RRC. You may.

<NR Physical Resources>

In relation to a physical resource in NR, an antenna port, a resource grid, a resource element, a resource block, a bandwidth part, etc. are considered can be

An antenna port is defined such that a channel on which a symbol on an antenna port is carried can be inferred from a channel on which another symbol on the same antenna port is carried. When the large-scale property of a channel on which a symbol on one antenna port is carried can be inferred from a channel on which a symbol on another antenna port is carried, the two antenna ports are QC/QCL (quasi co-located or QC/QCL) It can be said that there is a quasi co-location) relationship. Here, the wide range characteristic includes one or more of delay spread, Doppler spread, frequency shift, average received power, and received timing.

3 is a diagram for explaining a resource grid supported by a radio access technology to which this embodiment can be applied.

Referring to FIG. 3 , in the resource grid, since NR supports a plurality of numerologies on the same carrier, a resource grid may exist according to each numerology. In addition, the resource grid may exist according to an antenna port, a subcarrier interval, and a transmission direction.

A resource block consists of 12 subcarriers, and is defined only in the frequency domain. In addition, a resource element is composed of one OFDM symbol and one subcarrier. Accordingly, as in FIG. 3 , the size of one resource block may vary according to the subcarrier interval. In addition, NR defines "Point A" serving as a common reference point for a resource block grid, a common resource block, a virtual resource block, and the like.

4 is a diagram for explaining a bandwidth part supported by a radio access technology to which the present embodiment can be applied.

In NR, unlike LTE in which the carrier bandwidth is fixed at 20Mhz, the maximum carrier bandwidth is set from 50Mhz to 400Mhz for each subcarrier interval. Therefore, it is not assumed that all terminals use all of these carrier bandwidths. Accordingly, in NR, as shown in FIG. 4, a bandwidth part may be designated within the carrier bandwidth and used by the terminal. In addition, the bandwidth part is associated with one neurology and is composed of a subset of continuous common resource blocks, and may be dynamically activated according to time. Up to four bandwidth parts are configured in the terminal, respectively, in uplink and downlink, and data is transmitted/received using the activated bandwidth part at a given time.

In the case of a paired spectrum, the uplink and downlink bandwidth parts are set independently, and in the case of an unpaired spectrum, to prevent unnecessary frequency re-tunning between downlink and uplink operations For this purpose, the downlink and uplink bandwidth parts are set in pairs to share a center frequency.

<NR Initial Connection>

In NR, the terminal accesses the base station and performs a cell search and random access procedure in order to perform communication.

Cell search is a procedure in which the terminal synchronizes with the cell of the corresponding base station using a synchronization signal block (SSB) transmitted by the base station, obtains a physical layer cell ID, and obtains system information.

5 is a diagram exemplarily illustrating a synchronization signal block in a radio access technology to which the present embodiment can be applied.

Referring to FIG. 5, the SSB consists of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) occupying 1 symbol and 127 subcarriers, respectively, and a PBCH spanning 3 OFDM symbols and 240 subcarriers. .

The UE receives the SSB by monitoring the SSB in the time and frequency domains.

SSB can be transmitted up to 64 times in 5ms. A plurality of SSBs are transmitted using different transmission beams within 5 ms, and the UE performs detection on the assumption that SSBs are transmitted every 20 ms when viewed based on one specific beam used for transmission. The number of beams that can be used for SSB transmission within 5 ms time may increase as the frequency band increases. For example, up to 4 SSB beams can be transmitted in 3 GHz or less, and SSB can be transmitted using up to 8 different beams in a frequency band of 3 to 6 GHz and up to 64 different beams in a frequency band of 6 GHz or more.

Two SSBs are included in one slot, and the start symbol and the number of repetitions within the slot are determined according to the subcarrier interval as follows.

On the other hand, the SSB is not transmitted at the center frequency of the carrier bandwidth, unlike the SS of the conventional LTE. That is, the SSB may be transmitted in a place other than the center of the system band, and a plurality of SSBs may be transmitted in the frequency domain when wideband operation is supported. Accordingly, the UE monitors the SSB using a synchronization raster that is a candidate frequency location for monitoring the SSB. The carrier raster and synchronization raster, which are the center frequency location information of the channel for initial access, are newly defined in NR. Compared to the carrier raster, the synchronization raster has a wider frequency interval than that of the carrier raster. can

The UE may acquire the MIB through the PBCH of the SSB. MIB (Master Information Block) includes minimum information for the terminal to receive the remaining system information (RMSI, Remaining Minimum System Information) broadcast by the network. In addition, the PBCH includes information on the location of the first DM-RS symbol on the time-domain, information for the UE to monitor SIB1 (eg, SIB1 neurology information, information related to SIB1 CORESET, search space information, PDCCH-related parameter information, etc.), offset information between the common resource block and the SSB (the position of the absolute SSB in the carrier is transmitted through SIB1), and the like. Here, the SIB1 neurology information is equally applied to messages 2 and 4 of the random access procedure for accessing the base station after the terminal completes the cell search procedure.

The aforementioned RMSI means SIB1 (System Information Block 1), and SIB1 is broadcast periodically (ex, 160 ms) in the cell. SIB1 includes information necessary for the UE to perform an initial random access procedure, and is periodically transmitted through the PDSCH. In order for the UE to receive SIB1, it must receive neurology information used for SIB1 transmission and CORESET (Control Resource Set) information used for scheduling SIB1 through the PBCH. The UE checks scheduling information for SIB1 by using SI-RNTI in CORESET, and acquires SIB1 on PDSCH according to the scheduling information. SIBs other than SIB1 may be transmitted periodically or may be transmitted according to the request of the terminal.

6 is a diagram for explaining a random access procedure in a radio access technology to which this embodiment can be applied.

Referring to FIG. 6 , upon completion of cell search, the terminal transmits a random access preamble for random access to the base station. The random access preamble is transmitted through the PRACH. Specifically, the random access preamble is transmitted to the base station through a PRACH consisting of continuous radio resources in a specific slot that is periodically repeated. In general, when a UE initially accesses a cell, a contention-based random access procedure is performed, and when random access is performed for beam failure recovery (BFR), a contention-free random access procedure is performed.

The terminal receives a random access response to the transmitted random access preamble. The random access response may include a random access preamble identifier (ID), an uplink grant (UL Grant), a Temporary Cell - Radio Network Temporary Identifier (C-RNTI), and a Time Alignment Command (TAC). Since one random access response may include random access response information for one or more terminals, the random access preamble identifier may be included to inform which terminal the included uplink grant, temporary C-RNTI, and TAC are valid. . The random access preamble identifier may be an identifier for the random access preamble received by the base station. The TAC may be included as information for the UE to adjust uplink synchronization. The random access response may be indicated by a random access identifier on the PDCCH, that is, RA-RNTI (Random Access - Radio Network Temporary Identifier).

Upon receiving the valid random access response, the terminal processes information included in the random access response and performs scheduled transmission to the base station. For example, the UE applies the TAC and stores the temporary C-RNTI. In addition, data stored in the buffer of the terminal or newly generated data is transmitted to the base station by using the uplink grant. In this case, information for identifying the terminal should be included.

Finally, the terminal receives a downlink message for contention resolution.

<NR CORESET>

The downlink control channel in NR is transmitted in a CORESET (Control Resource Set) having a length of 1 to 3 symbols, and transmits uplink/downlink scheduling information, SFI (Slot Format Index), and TPC (Transmit Power Control) information. .

As such, in NR, the concept of CORESET was introduced in order to secure the flexibility of the system. CORESET (Control Resource Set) means a time-frequency resource for a downlink control signal. The UE may decode the control channel candidates by using one or more search spaces in the CORESET time-frequency resource. Quasi CoLocation (QCL) assumptions for each CORESET are set, and this is used for the purpose of notifying the characteristics of the analog beam direction in addition to the delay spread, Doppler spread, Doppler shift, and average delay, which are characteristics assumed by the conventional QCL.

7 is a diagram for explaining CORESET.

Referring to FIG. 7 , CORESET may exist in various forms within a carrier bandwidth within one slot, and CORESET may consist of up to three OFDM symbols in the time-domain. In addition, CORESET is defined as a multiple of 6 resource blocks up to the carrier bandwidth in the frequency domain.

The first CORESET is indicated through the MIB as part of the initial bandwidth part configuration to receive additional configuration information and system information from the network. After connection establishment with the base station, the terminal may receive and configure one or more pieces of CORESET information through RRC signaling.

In the present specification, frequencies, frames, subframes, resources, resource blocks, regions, bands, subbands, control channels, data channels, synchronization signals, various reference signals, various signals, and various messages related to NR (New Radio) in the present specification can be interpreted in various meanings used in the past or present or used in the future.

New Radio (NR)

3GPP recently approved "Study on New Radio Access Technology", a study item for research on next-generation radio access technology (ie 5G radio access technology), and based on this, RAN WG1 frame structure for NR (New Radio) (Frame structure), channel coding and modulation (channel coding & modulation), and the design of the waveform and multiple access scheme (waveform & multiple access scheme) is in progress. NR is required to be designed to satisfy various QoS requirements required for each segmented and detailed service scenario as well as an improved data rate compared to LTE/LTE-Advanced.

eMBB (enhancement Mobile BroadBand), mMTC (massive machine type communication), and URLLC (Ultra Reliable and Low Latency Communications) have been defined as representative usage scenarios of NR, and the requirements for each usage scenario are satisfied. As a method for this, a flexible frame structure design compared to LTE/LTE-Advanced is required.

Each service scenario (usage scenario) is a frequency constituting an arbitrary NR system because requirements for data rates, latency, reliability, coverage, etc. are different from each other A radio resource unit based on different numerology (eg, subcarrier spacing, subframe, TTI, etc.) as a method for efficiently satisfying the needs of each service scenario through the band The need for a method for efficiently multiplexing is being raised.

As one method for this, TDM, FDM or TDM/FDM-based through one or a plurality of NR component carriers (s) for numerology with different subcarrier spacing values A method of supporting by multiplexing or multiplexing with , and a method of supporting one or more time units in configuring a scheduling unit in a time domain were discussed. In this regard, in NR, a subframe is defined as a type of a time domain structure, and reference numerology for defining a corresponding subframe duration. ), it was decided to define a single subframe duration consisting of 14 OFDM symbols of the same 15kHz Sub-Carrier Spacing (SCS)-based normal CP overhead as LTE. Accordingly, in NR, a subframe has a duration of 1 ms. However, unlike LTE, the NR subframe is an absolute reference time duration, and a slot and a mini-slot as a time unit that is the basis of actual up/downlink data scheduling. ) can be defined. In this case, the number of OFDM symbols constituting the corresponding slot, the y value, is determined to have a value of y=14 regardless of the SCS value in the case of a normal CP.

Accordingly, any slot consists of 14 symbols, and according to the transmission direction of the slot, all symbols are used for downlink transmission (DL transmission), or all symbols are used for uplink transmission (UL). transmission), or may be used in the form of a downlink portion (DL portion) + a gap + an uplink portion (UL portion).

In addition, a mini-slot composed of a smaller number of symbols than the slot is defined in any numerology (or SCS), and a short time-domain scheduling interval for uplink/downlink data transmission/reception based on this is defined. A domain scheduling interval may be set, or a long time-domain scheduling interval for uplink/downlink data transmission/reception may be configured through slot aggregation.

In particular, in the case of transmission and reception of latency critical data such as URLLC, 1ms (14 symbols) defined in a numerology-based frame structure with a small SCS value such as 15kHz When scheduling is performed in units of slots, it may be difficult to satisfy the latency requirement. For this purpose, a mini-slot composed of fewer OFDM symbols than the slot is defined, and based on this, it is critical to the same latency as the URLLC. It can be defined so that scheduling of (latency critical) data is performed.

Alternatively, as described above, by multiplexing or multiplexing numerology having different SCS values in one NR carrier in TDM and/or FDM methods and supporting each numerology (numerology) ), a method of scheduling data according to a latency requirement based on the length of a slot (or mini-slot) defined for each is also being considered. For example, when the SCS is 60 kHz as shown in FIG. 8 below, since the symbol length is reduced by about 1/4 compared to the case of SCS 15 kHz, if one slot is configured with 14 OFDM symbols, the corresponding 15 kHz-based The slot length becomes 1 ms, whereas the slot length based on 60 kHz is reduced to about 0.25 ms.

As such, in NR, by defining different SCS or different TTI lengths, a discussion is ongoing on a method of satisfying the requirements of URLLC and eMBB, respectively.

PDCCH

In NR and LTE/LTE-A systems, L1 control information such as DL assignment, Downlink Control Information (DCI) and UL grant DCI is transmitted and received through the PDCCH. A control channel element (CCE) is defined as a resource unit for PDCCH transmission, and in NR, a control resource set (CORESET), a frequency/time resource for PDCCH transmission, may be set for each UE. In addition, each CORESET may be configured with one or more search spaces composed of one or more PDCCH candidates for the UE to monitor the PDCCH.

power control

In the NR and LTE/LTE-A systems, the uplink transmission power of the terminal was determined by the maximum transmission power value of the terminal, higher layer parameters, path loss, and the TPC command value transmitted through the downlink control channel. .

Uplink transmission procedure

The uplink control channel in NR may be divided into a short PUCCH structure and a long PUCCH structure supporting different symbol lengths in consideration of transmission delay and coverage requirements. In addition, various options are provided for the start symbol position and symbol length of the PUCCH in consideration of the symbol-level flexible resource configuration method. In addition, functions such as on/off control DM-RS overhead setting for frequency hopping of PUCCH are supported.

In NR, a method for allocating PUSCH resources of the existing LTE/LTE-A system and a corresponding UL grant-based slot-based PUSCH transmission identical to the PUSCH transmission operation of the UE and a corresponding DM-RS transmission type mapping type A In addition, non-slot-based (ie, mini-slot-based)-based PUSCH transmission and a corresponding DM-RS transmission type, mapping type B, and aggregated-slot-based PUSCH transmission, Various types of PUSCH transmission methods such as grant-free PUSCH transmission have been defined.

Wider bandwidth operations

In the case of the existing LTE system, a scalable bandwidth operation for an arbitrary LTC CC (Component Carrier) was supported. That is, according to a frequency distribution scenario (deployment scenario), any LTE operator was able to configure a bandwidth of at least 1.4 MHz to a maximum of 20 MHz in configuring one LTE CC, and a normal LTE terminal is one LTE For CC, the transmit/receive capability of 20 MHz bandwidth was supported.

However, in the case of NR, the design is made to enable support for NR terminals having different transmission/reception bandwidth capabilities through one wideband NR CC. By configuring one or more bandwidth parts (BWP, bandwidth part(s)) composed of a segmented bandwidth for an arbitrary NR CC, flexible (bandwidth part configuration) and activation (activation) different for each terminal It is required to support a wider bandwidth operation that is flexible.

Specifically, in NR, one or more bandwidth parts may be configured through one serving cell configured from the viewpoint of the terminal, and the terminal may configure one downlink bandwidth part in the corresponding serving cell (serving cell). DL bandwidth part) and one uplink bandwidth part (UL bandwidth part) are activated and defined to be used for uplink/downlink data transmission/reception. In addition, when a plurality of serving cells are configured in the corresponding terminal, that is, one downlink bandwidth part and/or uplink bandwidth part is activated for each serving cell even for a terminal to which CA is applied. Thus, it is defined to be used for uplink/downlink data transmission/reception using radio resources of the corresponding serving cell.

Specifically, an initial bandwidth part for an initial access procedure of a terminal is defined in an arbitrary serving cell, and one or more terminal-specific (through dedicated RRC signaling for each terminal) A UE-specific) bandwidth part (bandwidth part(s)) is configured, and also a default bandwidth part (default bandwidth part) for a fallback operation for each terminal may be defined.

However, a plurality of downlink and/or uplink bandwidth parts are activated and used at the same time according to the configuration of the terminal's capability and bandwidth part(s) in an arbitrary serving cell. However, in NR rel-15, it is defined to activate and use only one downlink bandwidth part (DL bandwidth part) and an uplink bandwidth part (UL bandwidth part) at any time in any terminal. .

Example 1

Discontinuous transmission indication for DL

As a multiplexing method for downlink data of different transmission durations defined in NR, a method of indicating through a group common PDCCH for discontinuous transmission was defined. That is, when an arbitrary terminal receives indication information for discontinuous transmission, the corresponding terminal receives some time/frequency ( time/frequency) resource, it was possible to check whether there was a preemption for data transmission of another terminal.

The present specification proposes a preemption-based uplink data channel transmission/reception method for efficiently multiplexing uplink data transmission resources between terminals having different latency requirements.

As a service requirement (usage scenario) provided by NR and LTE/LTE-A systems, eMBB service-related data support to maximize data transmission speed and URLLC service-related data requiring low latency/high reliability is increasing in importance.

In particular, in the case of uplink data transmission for URLLC in order to satisfy a requirement for a delay time, similar to the downlink case described above, a part of uplink data transmission resources of other terminals that have already been scheduled may be preemptively transmitted. For example, during the transmission of uplink data by the eMBB terminal, if it is necessary to transmit the uplink data of the URLLC terminal sensitive to the delay rate request, the URLLC terminal preemptively transmits a part of the uplink data transmission resource of the eMBB terminal. there is.

To this end, to support an uplink cancellation indication for stopping uplink data channel (PUSCH) transmission of a terminal currently transmitting uplink data and using a corresponding resource for uplink data transmission of a URLLC terminal. , it is necessary to define a specific operation method of the terminal for this.

In this specification, the term of an uplink cancellation indication is used for convenience of description, but the present specification is not limited by a specific term for the corresponding indication. The term of the above-described uplink cancellation indication is an uplink preemption indication (UL preemption indication), a discontinuous uplink transmission indication (discontinuous UL transmission indication), or a suspending uplink transmission indication (suspending UL transmission indication) Or it may be referred to by another term, and the invention according to the present specification is not limited by the name.

Example 1-1. Setting monitoring information for uplink cancellation indication

As a method for transmitting uplink cancellation indication information, a UE-specific DCI format for uplink cancellation indication may be defined. In this case, for each UE through UE-specific CORESET or UE-specific PDCCH transmitted through UE-specific search space for each UE It can be defined to be transmitted.

As another method for transmitting uplink cancellation indication information, a UE-group common DCI format for uplink cancellation indication may be defined. In this case, a UE-group transmitted through a UE-group common CORESET or UE-group common search space configured for an arbitrary UE-group (UE-group). It can be defined to transmit for each UE through a common PDCCH (UE-group common PDCCH).

As such, when it is defined to transmit uplink cancellation indication information for an arbitrary terminal through a UE-specific PDCCH or a UE-group common PDCCH, the base station / The network uplinks through UE-specific higher layer signaling or cell-specific/UE-group common higher layer signaling for any UE It can be defined to set monitoring for an uplink cancellation indication. However, the monitoring setting for the corresponding uplink cancellation indication may be set independently of whether the monitoring setting for the DL preemption indication is set.

Or, according to another example, the above-described uplink cancellation indication may be indicated based on a specific sequence in addition to the method transmitted through the PDCCH in the form of DCI (UE-specific or group-common). there is. For example, the specific sequence may be preset or set based on various specific factors such as cell ID, terminal ID, or bandwidth.

Specifically, monitoring setting information for uplink cancellation indication includes control resource set (CORESET) and search space setting information for monitoring the corresponding uplink cancellation indication information, RNTI (Radio Network Temporary Identifier) may include setting information or monitoring period setting information.

Example 1-2. Operation method of the terminal when receiving uplink cancellation indication information

Example 1-2-1. A method of suspending the remaining PUSCH transmission (Remaining PUSCH transmission)

Upon receiving the above-mentioned uplink cancellation indication information, the UE does not perform PUSCH transmission in the remaining OFDM symbols (remaining OFDM symbol(s)) among the resources allocated for the PUSCH being transmitted, that is, the PUSCH It can be defined to stop transmission.

Specifically, as shown in FIG. 10 , the terminal receiving the uplink cancellation indication has a timing corresponding to a predetermined delay time from the time when the corresponding uplink cancellation indication information is transmitted. It can be defined to stop all PUSCH transmission after K, which is a timing gap. Here, the time point at which the uplink cancellation indication information is transmitted is, for example, an uplink corresponding to the last symbol to which uplink cancellation indication information is transmitted or the last symbol to which uplink cancellation indication information is transmitted. It can mean a symbol.

In this case, the K value may be defined to be set by the base station/network and transmitted to the terminal through explicit signaling. For example, the K value is set by the base station/network, so that UE-specific higher layer signaling or cell-specific/UE-group common higher layer signaling (cell-specific/UE-group common higher) layer signaling) may be transmitted to the terminal. Alternatively, the K value is included in the corresponding uplink cancellation indication information, for example, by the base station/network, and is dynamically set and transmitted through physical layer control signaling (L1 control signaling). can

As another method of defining the corresponding K value, the corresponding K value is implicitly set by the capability of the terminal or is set in the base station/network based on this, and explicit signaling as described above ) can be defined to be transmitted to the terminal through

As another method of defining the corresponding K value, the corresponding K value may be determined implicitly. For example, the K value may be defined to be determined as a function of downlink or uplink numerology/SCS value. Alternatively, it may be defined such that the corresponding K value is determined as a function of the monitoring period value of the cancellation indication.

According to an example, referring to FIG. 10 , a case in which PUSCH resource allocation is performed within a slot boundary is illustrated. That is, it is a case where a slot-based or mini-slot (non-slot)-based PUSCH resource allocation is made. The UE may perform PUSCH transmission through a slot allocated for PUSCH transmission. When an uplink cancellation indication is received, the terminal stops PUSCH transmission in the remaining symbols within the boundary of the slot from after the symbol corresponding to the delay time K value. Can be performed. .

Alternatively, according to another example, referring to FIG. 11 , a case in which PUSCH resource allocation based on a plurality of aggregated slots is made is illustrated. In this case, the UE may perform suspending only for the remaining PUSCH transmission within the boundary of the slot #n in which the uplink cancellation indication is received. Thereafter, the UE may normally perform PUSCH transmission through the remaining allocated slots (after #n+1).

Alternatively, according to another example, with reference to FIG. 12 , when PUSCH resource allocation based on a plurality of aggregated slots is made, the terminal receives an uplink cancellation indication (#n). ) and subsequent aggregated slots (after #n+1), all remaining PUSCH transmissions may be stopped.

Example 1-2-2. A method of suspending only PUSCH transmission in some time durations among remaining PUSCH transmissions

The terminal receiving the above-described uplink cancellation indication information, as shown in FIG. 13, corresponds to an OFDM symbol corresponding to a partial duration (time duration) for a PUSCH transmission being transmitted. It can be defined to stop only PUSCH transmission.

Specifically, as shown in FIG. 13 , the terminal receiving the uplink cancellation indication transmits the PUSCH after K, which is a certain timing gap from the time at which the corresponding uplink cancellation indication information transmission is made ( Transmission) may be defined to resume PUSCH transmission after suspending PUSCH transmission corresponding to M, which is a time duration. Here, the time point at which the uplink cancellation indication information is transmitted is, for example, an uplink corresponding to the last symbol to which uplink cancellation indication information is transmitted or the last symbol to which uplink cancellation indication information is transmitted. It can mean a symbol.

In this case, the method for determining the corresponding K value may be defined to be set by the base station/network and transmitted to the terminal through explicit signaling as described above. For example, the K value is set by the base station/network, so that UE-specific higher layer signaling or cell-specific/UE-group common higher layer signaling (cell-specific/UE-group common higher) layer signaling) may be transmitted to the terminal. Alternatively, the K value is included in the corresponding uplink cancellation indication information, for example, by the base station/network, and is dynamically set and transmitted through physical layer control signaling (L1 control signaling). can

As another method of defining the corresponding K value, the corresponding K value is implicitly set by the capability of the terminal or is set in the base station/network based on this, and explicit signaling as described above ) can be defined to be transmitted to the terminal through

As another method of defining the corresponding K value, the corresponding K value may be determined implicitly. For example, it may be defined to be determined as a function of a numerology/SCS value of DL or UL, or a corresponding value to be determined as a function of a monitoring period value of a cancellation indication.

In addition, the method for determining the M value, which is the suspending duration, is set by the base station / network similarly to the above-described method for determining the K value and is defined to be transmitted to the terminal through explicit signaling. can For example, the M value is set by the base station/network, so that UE-specific higher layer signaling or cell-specific/UE-group common higher layer signaling (cell-specific/UE-group common higher) layer signaling) may be transmitted to the terminal. Alternatively, the M value is included in the corresponding uplink cancellation indication information, for example, by the base station/network, and is dynamically set and transmitted through physical layer control signaling (L1 control signaling). can

Alternatively, the corresponding M value is implicitly set by the capability of the terminal or is set in the base station / network based on this and transmitted to the terminal through explicit signaling as described above. Can be defined. .

As another method of defining the corresponding M value, the corresponding M value may be determined implicitly. For example, it may be defined to be determined as a function of a downlink or uplink numerology/SCS value, or a corresponding value to be determined as a function of a monitoring period value of the cancellation indication.

Additionally, when PUSCH transmission is resumed after a certain period of time has elapsed, it may be defined to explicitly signal this in the base station/network.

Additionally, an OFDM symbol or slot may be applied as a unit for defining the K value or the M value, and as a numerology or SCS value for defining a symbol or slot boundary for PUSCH transmission It may be defined to be determined by the applied SCS or to be determined by the SCS of the downlink (eg, PDCCH for uplink cancellation indication transmission).

According to an example, transmission of uplink cancellation indication information during PUSCH transmission of the UE may be transmitted through downlink. Alternatively, according to an example, transmission of uplink cancellation indication information may be performed through a cell adjacent to a cell in which the UE is performing PUSCH transmission. For this, a multicarrier or carrier aggregation scheme may be used. However, this is an example and not limited thereto, and is not limited to a specific method as long as the UE can receive uplink cancellation indication information while performing PUSCH transmission.

According to this, when there is an uplink cancellation instruction request from another terminal requesting a low delay rate during the transmission of the uplink data channel of the terminal, the transmission of the uplink channel to the other terminal can be performed preferentially. delay speed can be satisfied. Accordingly, transmission of the uplink channel of the URLLC terminal may be performed during the transmission of the uplink data channel of the eMBB terminal, and thus efficient multiplexing of the URLLC service and the eMBB service may be possible.

Example 2

The present specification also proposes a method and apparatus for controlling uplink data channel transmission power for efficient multiplexing of URLLC (Ultra Reliable and Low Latency Communications) and eMBB (enhanced Mobile BroadBand) services in a next-generation/5G radio access network.

The present specification provides a method for efficiently supporting uplink data transmission between terminals having different latency requirements in a next-generation/5G radio access network, and relates to a method and apparatus for multiplexing between uplink transmissions through transmission power control. propose about

As described above in Example 1, as a service scenario (usage scenario) provided by NR and LTE/LTE-A systems, URLLC requiring low latency/high reliability along with eMBB service-related data support for maximizing data transmission speed The importance of an effective support method for service-related data is increasing.

In particular, in the case of uplink data transmission for URLLC in order to satisfy a requirement for delay time, a part of uplink data transmission resources of other terminals that have already been scheduled may be preemptively transmitted, similar to the downlink case described above. For example, during the transmission of uplink data by the eMBB terminal, if it is necessary to transmit the uplink data of the URLLC terminal sensitive to the delay rate request, the URLLC terminal preemptively transmits a part of the uplink data transmission resource of the eMBB terminal. there is.

Embodiment 1 stops uplink data channel (PUSCH) transmission of a terminal currently transmitting uplink data, and provides an uplink cancellation indication for using a corresponding resource for uplink data transmission of a URLLC terminal supported and a specific terminal operation method was defined for this.

However, the preemption-based PUSCH multiplexing may be performed through appropriate power control between the eMBB PUSCH transmission in which the corresponding collision occurs and the URLLC PUSCH transmission. Specifically, it instructs to allocate sufficient PUSCH transmission power to a UE in which URLLC PUSCH transmission is performed for some time interval or frequency interval resource allocated for URLLC PUSCH transmission in the eMBB PUSCH transmission interval, and to a UE in which eMBB PUSCH transmission is performed, the PUSCH By instructing to lower the transmission power, it is possible to guarantee the reception performance for the urgent URLLC PUSCH in the base station.

In Example 2, by adjusting the PUSCH transmission power of a specific terminal (eg eMBB terminal) currently being transmitted as described above, performance of PUSCH transmission of another terminal (eg URLLC terminal) overlapping a part of the same radio resource We propose a dynamic power control instruction method and apparatus to ensure

In this specification, indication control information for dynamically changing the PUSCH transmission power of the UE during PUSCH transmission is referred to as an uplink discontinuous TPC command or uplink discontinuous TPC command information. , This is only a name for convenience of description, and the present invention is not limited by the name. The above-described uplink uplink discontinuous TPC command (Uplink discontinuous TPC command) terminology uplink cancellation command (Uplink cancellation indication), uplink preemption TPC command (Uplink preemption indication), uplink suspending TPC command (Uplink suspending TPC) command), an uplink interrupt TPC command, or another term, and the invention according to the present specification is not limited by the name.

Embodiment 2 transmits and receives an uplink data channel according to a first transmission power control between a terminal and a base station, transmits and receives an uplink discontinuous TPC command, and transmits power of an uplink data channel being transmitted based on the uplink discontinuous TPC command A method, a terminal, and a base station corresponding thereto are provided.

Hereinafter, in Embodiment 2, monitoring information setting for an uplink discontinuous TPC command, configuration of discontinuous TPC command information, and a terminal operation thereof will be described, and then detailed operations of the terminal and the base station will be separately described.

Example 2-1. Monitoring information setting for uplink discontinuous TPC command (Uplink discontinuous TPC command)

As a method for transmitting uplink discontinuous TPC command information, a UE-specific downlink DCI format for the discontinuous TPC command may be defined. The base station transmits for each UE through a UE-specific PDCCH transmitted through a UE-specific CORESET or a UE-specific search space for each UE. can

As another method for transmitting the discontinuous TPC command information, a downlink DCI format common to the UE-group for the discontinuous TPC command may be defined. The base station is a UE-group transmitted through a UE-group common CORESET or UE-group common search space configured for an arbitrary UE-group (UE-group). It can be transmitted for each UE through a common PDCCH (UE-group common PDCCH).

As such, when the discontinuous TPC command information for an arbitrary terminal is defined to be transmitted through a terminal-specific PDCCH (UE-specific PDCCH) or a UE-group common PDCCH (UE-group common PDCCH), the base station / network is provided to any terminal Set monitoring for discontinuous TPC commands through UE-specific higher layer signaling or cell-specific/UE-group common higher layer signaling can be defined to However, the monitoring setting for the corresponding discontinuous TPC command may be set independently of whether the monitoring setting for the downlink preemption indication is set.

Specifically, the monitoring setting information for the discontinuous TPC command may include CORESET and search space setting information, RNTI setting information, and monitoring period setting information for monitoring the corresponding discontinuous TPC command information.

Example 2-2. Discontinuous TPC command information configuration and terminal operation accordingly

Example 2-2-1. How to readjust power for all remaining PUSCH transmissions

Upon receiving the above-described discontinuous TPC command information, the UE receives the discontinuous TPC for PUSCH transmission in the remaining OFDM symbols (remaining OFDM symbol(s)) after receiving the discontinuous TPC command among the resources allocated for the PUSCH being transmitted. It can be defined to perform the remaining PUSCH transmission based on the readjusted transmission power according to the indication information of the command.

Specifically, discontinuous TPC command The UE receiving the discontinuous TPC command readjusts the transmission power according to the discontinuous TPC command indication information for the remaining PUSCH transmission after a predetermined timing gap K from the time when the discontinuous TPC command information transmission is made to adjust the PUSCH. It can be defined to be transmitted. Here, the time point at which the discontinuous TPC command information is transmitted may mean, for example, an uplink symbol corresponding to the last symbol in which the discontinuous TPC command information is transmitted or the last symbol in which the discontinuous TPC command information is transmitted.

In other words, discontinuous TPC command The terminal receiving the discontinuous TPC command determines the PUSCH transmission power according to the first transmission power control before a predetermined timing gap K' from the time the corresponding discontinuous TPC command information transmission is made. The transmit power may be readjusted according to the second transmit power control according to the corresponding discontinuous TPC command indication information. For example, as will be described later, the first transmission power control may be applied to a general PUSCH transmission power control method, and the second transmission power control transmits power according to the second transmission power control according to the discontinuous TPC command indication information. It could mean a readjustment.

As will be described later, the first transmission power control may mean applying Equation 1 or a newly defined Equation above, but applying the parameter or parameter set defined in Equation 1 in these Equations. Also, the second transmission power control may mean applying the same equation as that of the first transmission power control, but applying a different parameter or parameter set from the first transmission power control.

, 하향링크 제어 정보에 의해 전송되는 TPC 코멘드 값에 따른

, 하향링크 제어 정보에 포함되는 TPC 코멘트

와 특정 상위계층 파라미터에 의해 계산되는 인덱스 l을 갖는 PUSCH 전력 제어 조정 상태(PUSCH power control adjustment state with index l)를 나타내는 값인

중 하나 또는 둘 이상일 수 있다. The parameter or parameter set used in the first and second transmit power control is the maximum transmit power value P _{CMAX, f, c} (i) set for the corresponding terminal in Equation 1, and the component P _{O_NOMINAL_PUSCH, f} provided by the higher layer parameter _,c (j), component P _{O_UE_PUSCH, f,c} (j), component P _{O_NOMINAL_PUSCH, f,c} (j) and component P _{O_UE_PUSCH, f,c (} j) _c (j), which is an offset value calculated by a specific upper layer parameter

, according to the TPC command value transmitted by the downlink control information

, TPC comments included in downlink control information

and a value indicating a PUSCH power control adjustment state with index l having an index l calculated by a specific upper layer parameter.

It may be one or two or more.

Meanwhile, the equations applied to the first transmit power control and the second transmit power control may be different from each other. As will be described later, Equation 1 may be applied to the first transmit power control. Equation different from Equation 1 may be applied to the second transmission power control.

In this case, the corresponding K' value may be defined to be set by the base station/network and transmitted to the terminal through explicit signaling. For example, it is set by the base station / network and the terminal-specific (UE-specific) or cell-specific (cell-specific) / terminal-group common (UE-group common) terminal through higher layer signaling (higher layer signaling) can be transmitted to The K' value may be dynamically set and transmitted by the base station/network through physical layer control signaling. For example, the K' value may be included in the corresponding discontinuous TPC command information dynamically transmitted through physical layer control signaling.

As another method of defining the corresponding K' value, the corresponding K' value is implicitly set by the capability of the terminal or is set in the base station/network based on this and transmitted to the terminal through explicit signaling as described above. can be defined

As another method of defining the corresponding K' value, the corresponding K' value may be implicitly determined. For example, it may be defined to be determined as a function of downlink or uplink numerology/subcarrier spacing/SCS value. In addition, it may be defined such that the corresponding value is determined as a function of the monitoring period value of the aforementioned discontinuous TPC command.

In addition, the discontinuous TPC command indication information may be defined to include power offset indication information for readjustment of transmit power of the corresponding PUSCH. Upon receiving the discontinuous TPC command information, the UE may readjust the transmission power value of the currently transmitted PUSCH according to the corresponding power offset indication information to perform the remaining PUSCH transmission.

The UE transmits the PUSCH to the carrier f of the serving cell c using a parameter set configuration with index j and a PUSCH power control adjustment state with index l having an index j When, in the PUSCH transmission period i (PUSCH transmission period i), the transmission power (P _{PUSCH, f, c} (i, j, qd, l)) for PUSCH transmission of an arbitrary terminal is obtained by the following Equation (1) It was decided.

In Equation 1, each variable summarized below is specifically defined in 7.Uplink Power control in TS38.213.

P _{CMAX, f, c} (i) is the maximum transmit power value set for the corresponding terminal for the carrier f of the serving cell c in the PUSCH transmission period i (PUSCH transmission period i) (the configured UE transmit power for carrier f of serving cell) c in PUSCH transmission period i).

P _{o_PUSCH, f, c} (j) is a parameter composed of the sum of components P _{O_NOMINAL_PUSCH, f,c} (j) and components P _{O_UE_PUSCH, f,c} (j) provided by higher layer parameters.

u is the subcarrier spacing for PUSCH as the carrier f of the serving cell c.

는 PUSCH 전송을 위한 할당된 자원블럭들의 수로 표현되는 PUSCH 자원 할당의 대역폭(the bandwidth of the PUSCH resource assignment expressed in number of resource blocks for PUSCH transmission)이다.

is the bandwidth of the PUSCH resource assignment expressed in number of resource blocks for PUSCH transmission.

는 특정 상위계층 파라미터에 의해 제공되고,

는 참조신호 자원 q_d를 사용하여 해당 단말에 의해 계산된 dB 단위의 하향링크 경로 감쇄값이고,

은 특정 상위계층 파라미터에 의해 계산되는 오프셋값이며,

는 하향링크 제어 정보에 포함되는 TPC 코멘트와 특정 상위계층 파라미터에 의해 계산되는 인덱스 l을 갖는 PUSCH 전력 제어 조정 상태(PUSCH power control adjustment state with index l)를 나타내는 값이다.

is provided by a specific upper layer parameter,

is a downlink path attenuation value in dB units calculated by the corresponding terminal using the reference signal resource q _d ,

is an offset value calculated by a specific upper layer parameter,

is a value indicating a PUSCH power control adjustment state with index l having an index l calculated by a TPC comment included in downlink control information and a specific higher layer parameter.

Any UE derives a PUSCH transmission power value by Equation (1) above when transmitting one or more slot(s) or mini-slot-based (i.e. non-slot-based) PUSCH.

However, when an equation for a new PUSCH transmission power is defined in the NR, the PUSCH transmission power value of the corresponding UE may be determined accordingly.

As such, when an arbitrary terminal whose PUSCH transmission power is determined by the equation for PUSCH transmission power as the first transmission power control receives a discontinuous TPC command, the second transmission according to the power offset indication information indicated through the discontinuous TPC command As power control, the PUSCH transmission corresponding to the remaining PUSCH may be performed by re-adjusting the transmission power by the power offset value indicated relative to the transmission power according to Equation 1 for the transmission power for the PUSCH transmission of an arbitrary terminal.

However, the above-described power offset indication information indicated by the corresponding discontinuous TPC command may consist of 1 bit or more.

In this case, as a method of defining the above-described applied power offset value according to a specific setting value of the power offset indication information of the discontinuous TPC command, a fixed power offset value according to the setting value of the discontinuous TPC command may be defined in a table form. .

Alternatively, the power offset value according to the set value of the corresponding discontinuous TPC command may be set by the base station. When the power offset value according to the set value of the corresponding discontinuous TPC command is set by the base station, the power offset value corresponding to each set value of the power offset indication information of the corresponding TPC command is set for each terminal for terminal-specific upper layer signaling It can be defined to be transmitted through , or to be transmitted through cell-specific/terminal-group common upper layer signaling by setting for all terminals or terminal-groups in the cell.

In Embodiment 2, the PUSCH transmission power control according to the discontinuous TPC command includes not only readjusting power for the remaining PUSCH according to the discontinuous TPC command, but also making the remaining PUSCH transmission power to be 0.

For example, through the discontinuous TPC command, as well as an indication for power readjustment for the remaining PUSCH through the above-described power offset indication information, an information area indicating stopping the transmission of the remaining PUSCH itself, that is, the remaining PUSCH transmission power It can be defined to include an information area indicating to be 0.

Specifically, it may be defined to include 1-bit flag information for indicating whether the corresponding discontinuous TPC command is for transmission power readjustment for the remaining PUSCH or for stopping transmission for the remaining PUSCH. Through the fragment information of this bit, it can be defined that the UE determines whether to transmit the remaining PUSCH by adjusting transmission power or to stop transmission of the remaining PUSCH according to the corresponding discontinuous TPC command.

Alternatively, when the power offset indication information in the above-described discontinuous TPC command is set to a specific value (eg, when the corresponding setting value is '0'), the terminal receiving the discontinuous TPC command can be defined to stop the remaining PUSCH transmission itself. there is.

Example 2-2-2. A method of re-adjusting and transmitting transmission power only for PUSCH transmission in some time durations among the remaining PUSCH transmissions.

Upon receiving the discontinuous TPC command information, the UE may define to retransmit PUSCH transmission power only during a partial time period for the PUSCH transmission being transmitted.

Specifically, as shown in FIG. 15 , the terminal receiving the discontinuous TPC command corresponds to the adjustment time duration M' during PUSCH transmission after K', which is a predetermined timing gap from the time when the discontinuous TPC command information is transmitted. For PUSCH transmission, after readjusting the transmission power value, it may be defined to resume PUSCH transmission based on the original transmission power value after that.

In other words, discontinuous TPC command As shown in FIG. 15, the terminal receiving the discontinuous TPC command determines the PUSCH transmission power according to the first transmission power control before a predetermined timing gap K' from the time when the corresponding discontinuous TPC command information transmission is made. , it is possible to readjust the transmission power according to the second transmission power control according to the discontinuous TPC command indication information for the remaining PUSCH transmission during the readjustment time duration M′ after the timing gap K′. The UE may determine the PUSCH transmission power according to the first transmission power control after the timing gap K' and the readjustment time duration M' from the point in time when the corresponding discontinuous TPC command information transmission is made.

The first transmission power control and the second transmission power control may be the same as those described in Embodiment 2-2-1.

As shown in FIG. 15 , the terminal receives a third different from the first transmission power control and the second transmission power control after the timing gap K' and the readjustment time duration M' from the time point at which the discontinuous TPC command information transmission is made. PUSCH transmission power may be determined according to transmission power control. The third transmit power control may apply a parameter or parameter set different from those of the first and second power power controls, or apply a different equation.

As described above in Embodiment 2-2-1, the time point at which the discontinuous TPC command information is transmitted is, for example, the last symbol to which the discontinuous TPC command information is transmitted, or the last symbol to which the discontinuous TPC command information is transmitted. It may mean an uplink symbol.

At this time, a method for determining the corresponding K' value, a method for determining a power offset value for transmission power readjustment through the discontinuous TPC command, and a method for indicating whether to stop the corresponding PUSCH transmission or adjust the transmission power are carried out It may be the same as described above in Example 2-2-1.

In addition, the method of determining the M' value, which is the time period for which the above-described transmission power readjustment is applied, is set by the base station/network similarly to the method of determining the K' value described above and can be defined to be transmitted to the terminal through explicit signaling. there is. For example, set by the base station / network to terminal-specific higher layer signaling (UE-specific higher layer signaling) or cell-specific / terminal-group common higher layer signaling (cell-specific / UE-group common higher layer signaling) may be transmitted to the terminal through Also, it may be dynamically configured and transmitted through physical layer control signaling. For example, the M' value may be included in the corresponding discontinuous TPC command information dynamically transmitted through physical layer control signaling.

Alternatively, the corresponding M' value is implicitly set by the capability of the terminal, or is set in the base station/network based on this and transmitted to the terminal through explicit signaling as described above. Can be defined. there is.

As another method of defining the corresponding M' value, the corresponding M' value may be determined implicitly. For example, it may be defined to be determined as a function of a downlink or uplink numerology/SCS value, or a corresponding value to be determined as a function of a monitoring period value of the cancellation indication.

Additionally, the transmission power readjustment according to the discontinuous TPC command information according to the above-described embodiments 2-2-1 and 2-2-1 indicates that the discontinuous TPC command is being transmitted or that the application of the discontinuous TPC command is indicated at the time the corresponding discontinuous TPC command is received. It is defined to be temporarily applied only to PUSCH transmission, and the corresponding power readjustment value is accumulated and may not be applied to other subsequent PUSCH transmissions. That is, in the case of a subsequent PUSCH, it can be defined to follow the existing PUSCH transmission power control procedure regardless of whether a corresponding discontinuous TPC command is received and a power readjustment value according to the corresponding discontinuous TPC command.

17 is a flowchart of a method for a terminal to control transmission power of an uplink data channel in Embodiment 2;

Referring to FIG. 17 , in a method for a terminal to control transmit power of an uplink data channel according to Embodiment 2, transmitting an uplink data channel according to a first transmit power control ( S1710 ), an uplink discontinuous TPC command and adjusting the transmit power of the uplink data channel being transmitted to the second transmit power control based on the uplink discontinuous TPC command (S1720).

In the step of receiving the uplink discontinuous TPC command (S1720), the uplink discontinuous TPC command may be monitored based on monitoring configuration information for the uplink discontinuous TPC command.

As described in Embodiment 2, the monitoring configuration information includes a control resource set (CORESET) and search space configuration information for monitoring an uplink discontinuous TPC command, a Radio Network Temporary Identifier (RNTI). It may include setting information and monitoring period setting information. Specific details thereof are the same as those described in detail in Example 2-1 to be described above.

The uplink discontinuous TPC command may be indicated through a UE-specific DCI or a UE-group common DCI.

In the step (S1730) of adjusting the transmit power of the uplink data channel to the second transmit power control, the transmit power of the uplink data channel is controlled after a predetermined delay time elapses at the time when the uplink discontinuous TPC command is received. 2Adjustable by transmission power control. Specific details thereof are the same as those described in detail in Example 2-2-1 to be described above with reference to FIG. 14 .

In the step of adjusting the transmission power of the uplink data channel to the second transmission power control ( S1730 ), the transmission of uplink data is stopped in the slot in which the uplink discontinuous TPC command is received, or the uplink for the uplink data channel The transmit power of the uplink data channel for all the slots allocated based on the data channel resource allocation information may be adjusted by the second transmit power control.

The uplink discontinuous TPC command may further include information on a readjustment period for adjusting the transmission power of the uplink data channel through the second transmission power control. In the step of adjusting the transmission power of the uplink data channel to the second transmission power control ( S1730 ), the transmission power of the uplink data channel is adjusted to the second transmission power control during the readjustment period, and after the readjustment period elapses, the uplink The transmit power of the data channel may be adjusted through the first transmit power control. Specific details thereof are the same as those described in detail in Example 2-2-2 to be described above with reference to FIGS. 15 and 16 .

18 is a flowchart of a method for a base station to control an uplink data channel of a terminal in Embodiment 2;

Referring to FIG. 18 , a method for a base station to control an uplink data channel of a terminal comprises configuring monitoring setting information for an uplink discontinuous TPC command (S1810), and providing monitoring setting information to a terminal transmitting an uplink data channel. It includes the step of transmitting (S1820) and the step of transmitting the uplink discontinuous TPC command based on the monitoring configuration information (S1830).

The monitoring setting information includes control resource set (CORESET) and search space setting information for monitoring uplink discontinuous TPC command, RNTI (Radio Network Temporary Identifier) setting information, and monitoring period setting information. may include Specific details thereof are the same as those described in detail in Example 2-1 to be described above.

The uplink discontinuous TPC command may be indicated through a UE-specific DCI or a UE-group common DCI.

As specifically described in Embodiment 2-2-1 to be described with reference to FIG. 14, the UE transmits the transmission power of the uplink data channel after a predetermined delay time elapses from the point in time when the uplink discontinuous TPC command is received. can be readjusted.

The terminal readjusts the transmission power of the uplink data channel within the slot in which the uplink discontinuous TPC command is received, or for all of the plurality of slots allocated based on uplink data channel resource allocation information for the uplink data channel. It is possible to readjust the transmission power of the uplink data channel.

As specifically described in Example 2-2-2 to be described above with reference to FIGS. 15 and 16, information on a readjustment period for adjusting the transmit power of the uplink data channel to the second transmit power control may be further included. can The terminal may adjust the transmit power of the uplink data channel to the second transmit power control during the readjustment period, and may adjust the transmit power of the uplink data channel to the first transmit power control after the readjustment period elapses. .

19 is a diagram showing the configuration of a base station according to the third embodiment.

Referring to FIG. 19 , a base station 1900 according to another embodiment includes a controller 1910 , a transmitter 1920 , and a receiver 1930 .

The controller 1910 controls the overall operation of the base station 1900 according to the method for controlling the transmission power of the uplink data channel in the next-generation wireless network necessary for carrying out the present invention.

The transmitter 1920 and the receiver 1930 are used to transmit and receive signals, messages, and data necessary for carrying out the above-described present invention with the terminal.

The base station 1900 for controlling the uplink data transmission of the terminal transmits the monitoring setup information to the controller 1910 configuring the monitoring setup information for the uplink discontinuous TPC command and the terminal that is transmitting the uplink data channel, and monitors It may include a transmitter 1920 that transmits an uplink discontinuous TPC command based on the configuration information.

The monitoring setting information includes control resource set (CORESET) and search space setting information for monitoring uplink discontinuous TPC command, RNTI (Radio Network Temporary Identifier) setting information, and monitoring period setting information. may include Specific details thereof are the same as those described in detail in Example 2-1 to be described above.

The uplink discontinuous TPC command may be indicated through a UE-specific DCI or a UE-group common DCI.

The terminal may readjust the transmission power of the uplink data channel after a predetermined delay time elapses from the point in time when the uplink discontinuous TPC command is received. Specific details thereof are the same as those described in detail in Example 2-2-1 to be described above with reference to FIG. 14 .

The terminal readjusts the transmission power of the uplink data channel within the slot in which the uplink discontinuous TPC command is received, or for all of the plurality of slots allocated based on uplink data channel resource allocation information for the uplink data channel. It is possible to readjust the transmission power of the uplink data channel.

The uplink discontinuous TPC command may further include information on a readjustment period for adjusting the transmission power of the uplink data channel through the second transmission power control.

The UE may adjust the transmit power of the uplink data channel to the second transmit power control during the readjustment period, and may adjust the transmit power of the uplink data channel to the first transmit power control after the readjustment period elapses. Specific details thereof are the same as those described in detail in Example 2-2-2 to be described above with reference to FIGS. 15 and 16 .

20 is a diagram showing the configuration of a user terminal according to the second embodiment.

Referring to FIG. 20 , the user terminal 2000 according to another embodiment includes a receiver 2010 , a controller 2020 , and a transmitter 2030 .

The receiver 2010 receives downlink control information, data, and a message from the base station through a corresponding channel.

In addition, the control unit 2020 controls the overall operation of the user terminal 2000 according to the method of controlling the transmission power of the uplink data channel in the next-generation wireless network required to carry out the present invention.

The transmitter 2030 transmits uplink control information, data, and a message to the base station through a corresponding channel.

The terminal 2000 for transmitting uplink data includes a transmitter 2030 that transmits an uplink data channel according to a first transmission power control, a receiver 2010 that receives an uplink discontinuous TPC command, and an uplink discontinuous TPC command. and a controller 2020 that adjusts the transmission power of the uplink data channel being transmitted based on the second transmission power control.

The receiver 2010 may monitor the uplink discontinuous TPC command based on monitoring configuration information for the uplink discontinuous TPC command.

As described in Embodiment 2, the monitoring configuration information includes a control resource set (CORESET) and search space configuration information for monitoring an uplink discontinuous TPC command, a Radio Network Temporary Identifier (RNTI). It may include setting information and monitoring period setting information. Specific details thereof are the same as those described in detail in Example 2-1 to be described above.

The uplink discontinuous TPC command may be indicated through a UE-specific DCI or a UE-group common DCI.

The control unit 2020 may adjust the transmission power of the uplink data channel to the second transmission power control after a predetermined delay time elapses at the time when the uplink discontinuous TPC command is received. Specific details thereof are the same as those described in detail in Example 2-2-1 to be described above with reference to FIG. 14 .

The control unit 2020 stops the transmission of uplink data in the slot in which the uplink discontinuous TPC command is received, or transmits all of the plurality of slots allocated based on uplink data channel resource allocation information for the uplink data channel. In this case, the transmit power of the uplink data channel may be adjusted through the second transmit power control.

The uplink discontinuous TPC command may further include information on a readjustment period for adjusting the transmission power of the uplink data channel through the second transmission power control. The controller 2020 may adjust the transmit power of the uplink data channel to the second transmit power control during the readjustment period, and adjust the transmit power of the uplink data channel to the first transmit power control after the readjustment period elapses. Specific details thereof are the same as those described in detail in Example 2-2-2 to be described above with reference to FIGS. 15 and 16 .

Example 3

This specification proposes an uplink power control method and apparatus for supporting Ultra Reliable and Low Latency Communications (URLLC) and enhanced Mobile BroadBand (eMBB) services in a next-generation/5G radio access network.

This specification proposes an uplink power control method for satisfying different service requirements in a wireless mobile communication system such as LTE/LTE-A and NR. In particular, a method and apparatus for supporting a plurality of uplink power control procedures according to a service request in one terminal are proposed.

As a service scenario provided by NR and LTE/LTE-A systems, it is an efficient support method for URLLC service-related data that requires low latency/high reliability as well as eMBB service-related data support to maximize data transmission speed. is increasing in importance.

In particular, in the case of URLLC-related service-related data, it is necessary to improve the reliability of data transmission and reception along with a technology for minimizing the delay time compared to eMBB. To this end, it is necessary to improve the reliability of the PDSCH/PUSCH for uplink/downlink data transmission/reception.

The present specification is a method for satisfying different reliability requirements as described above, and a method and apparatus for defining and applying different power control procedures according to the corresponding reliability requirements when one terminal transmits uplink data propose about

According to the power control method for PUSCH transmission, which is the uplink data channel of the UE defined in the LTE/LTE-A and NR systems, according to a single transmission power control equation, a corresponding upper layer power control parameter or a TPC command The corresponding PUSCH transmission power was determined by applying the power control parameter.

값 및 PDCCH를 통해 전송되는 TPC 코멘드 값 등에 의해 PUSCH에 대한 전송 전력이 결정되었다. As will be described later, the value is determined by the upper layer parameter p0-pusch-alpha-set according to a single transmit power control equation.

The transmission power for the PUSCH is determined by the value and the TPC command value transmitted through the PDCCH.

This specification proposes a method and an apparatus for applying different power control procedures according to reliability requirements for the PUSCH transmission when a certain UE transmits a PUSCH.

21 is a diagram illustrating a concept of a multi-transmission power control procedure based on a reliability request to which Embodiment 3 can be applied.

Referring to FIG. 21 , Embodiment 3 provides a method and a terminal for transmitting and receiving an uplink data channel in which different power controls are applied for each reliability request to an uplink data channel between a terminal and a base station and different power controls are applied for each reliability request , and provides a corresponding base station.

Hereinafter, after explaining the reliability request-based multiple control procedure in Embodiment 3, specific operations of the terminal and the base station will be separately described.

Example 3-1. Multiple transmission power control procedure based on reliability requirements

Example 3-1-1. Application of multiple transmission power control parameter sets based on reliability requirements

A plurality of power control parameter sets for transmission power control for PUSCH are defined for one UE, and different parameter sets are defined according to a reliability request for a corresponding PUSCH or a target block error rate (BLER) for any PUSCH transmission. It can be defined to apply the values to the corresponding transmit power control equation. The aforementioned reliability request or target BLER is referred to as a target BLER.

As described above in Example 2-2-1, the UE has a parameter set configuration with index j and a PUSCH power control adjustment state with index l (PUSCH power control adjustment state with index l) When transmitting the PUSCH on the carrier _f of the serving cell c using l)) was determined by Equation (1) below.

In addition, a set of upper layer parameters to be applied to each parameter of Equation (1) and a set of TPC command values indicated by the PDCCH are defined. However, the corresponding power control parameters were defined as a single value or a set of single values based on a single target BLER for PUSCH transmission, and a single transmit power equation for PUSCH transmission was applied through the single value or set. .

Embodiment 3 is a method of uplink power control for satisfying a plurality of target BLERs for PUSCH transmission, in which one UE defines a plurality of different power control parameters or parameter sets for different target BLERs for different PUSCHs, , a method of independently applying this to each PUSCH transmission is proposed.

, 하향링크 제어 정보에 의해 전송되는 TPC 코멘드 값에 따른

, 하향링크 제어 정보에 포함되는 TPC 코멘트

와 특정 상위계층 파라미터에 의해 계산되는 인덱스 l을 갖는 PUSCH 전력 제어 조정 상태(PUSCH power control adjustment state with index l)를 나타내는 값인

중 하나 또는 둘 이상일 수 있다. A plurality of different power control parameters or parameter sets for each target BLER for different PUSCHs in one UE are the maximum transmit power values P _{CMAX, f, c} (i) set for the corresponding UE in Equation 1 in Equation 1, Consists of the sum of components P _{O_NOMINAL_PUSCH, f,c} (j), components P _{O_UE_PUSCH, f,c} (j), components P _{O_NOMINAL_PUSCH, f,c} (j) and components P _{O_UE_PUSCH, f,c} (j) provided by P _{o_PUSCH, f, c} (j), which are parameters to be

, according to the TPC command value transmitted by the downlink control information

, TPC comments included in downlink control information

and a value indicating a PUSCH power control adjustment state with index l having an index l calculated by a specific higher layer parameter.

It may be one or two or more.

For example, when 10 ^-1 and 10 ^-5 are defined as target BLERs for PUSCH transmission required by NR, a target BLER of 10 ^-1 for applying Equation (1) above for one terminal is used. P _{CMAX and a} values for requesting PUSCH transmission and P _{CMAX and b} values for PUSCH transmission requiring a target BLER of 10 ^-5 may be defined, respectively. The values of P _{CMAX, a} and the values of P _{CMAX, b} are values corresponding to P _{CMAX, f, and c} (i) in Equation (1) described above.

Similarly, in defining p0-pusch-alpha-set , which is a set of higher layer parameters for deriving the P _{O_UE_PUSCH, f,c} (j) values of Equation (1) above, a target BLER of 10 ^-1 is required. p0-pusch-alpha-set-a for PUSCH transmission and p0-pusch-alpha-set-b for PUSCH transmission requiring a target BLER of 10 ^-5 may be defined, respectively.

값을 구성하는 테이블을 정의함에 있어서도 10^-1의 타켓 BLER을 요구하는 PUSCH 전송을 위한 TPC_코멘드_table_a와 10^-5의 타켓 BLER을 요구하는 PUSCH 전송을 위한 TPC_코멘드_table_b 및 추가적으로 TPC-PUSCH-RNTI-a와 TPC-PUSCH-RNTI-b를 각각 정의할 수 있다. Similarly, according to the TPC command value transmitted by the PDCCH

Also in defining the table constituting the values, TPC_command_table_a for PUSCH transmission requesting a target BLER of 10 ^-1 , TPC_command_table_b for PUSCH transmission requesting a target BLER of 10 ^-5 , and additionally TPC- PUSCH-RNTI-a and TPC-PUSCH-RNTI-b may be defined, respectively.

Based on this, in calculating the transmission power value for any PUSCH transmission in any terminal, the above-mentioned Equation (1) is applied in the same way, but each parameter value constituting the above-mentioned Equation (1) is applied. In this case, it is defined to determine whether to apply a different parameter set according to the target BLER of the corresponding PUSCH, that is, whether to apply the set a based on the target BLER of 10 ^-1 or the set b based on the target BLER of 10 ^-5 can do.

Accordingly, each UE calculates an arbitrary PUSCH transmission power according to a single transmission power control equation such as Equation (1) above, but applies different parameter sets according to the target BLER of the corresponding PUSCH transmission to actually correspond It can be defined to derive the transmission power of PUSCH. That is, it is possible to define and apply an independent transmit power control procedure for each target BLER in one terminal.

Additionally, this embodiment may be applied regardless of the form of a specific PUSCH transmission power control equation. In addition, this embodiment applies independent parameter sets for each target BLER only to some of the above parameters for applying to the single PUSCH transmission power control equation, and based on this, a separate power control procedure for each target BLER is performed. In this case, the present embodiment may also be applied.

In addition, separate power control parameter sets are defined for different target BLERs as described above regardless of a specific target BLER value defined for PUSCH transmission, and independently applied according to the target BLER required for each PUSCH transmission. This embodiment can be applied to all cases.

Additionally, the parameter set(s) according to the target BLER to be applied to the power control equation for PUSCH transmission in an arbitrary terminal is set by the base station and transmitted to the corresponding terminal through higher layer signaling, or explicitly through physical layer control signaling can be directed. In addition, the parameter set(s) according to the target BLER to be applied to the power control equation for PUSCH transmission in an arbitrary terminal is implicitly as a function of the PUSCH allocation type (type A or type B), time-domain symbol allocation information, etc. can be directed.

Physical layer control signaling, for example, may mean DCI such as an uplink grant or TPC command transmitted through the PDCCH. The time-domain symbol allocation information may include, for example, the number of allocated symbols or information on slot-based allocation versus non-slot-based allocation.

Alternatively, the base station sets a target BLER value required for PUSCH transmission of the corresponding terminal and transmits it through higher layer signaling, or by explicitly or implicitly indicating through physical layer control signaling as described above, corresponding to the corresponding target BLER It can be defined to apply a set of power control parameters.

The physical layer control signaling may be an uplink grant transmitted through the PDCCH or may be through DCI such as a TPC command. As a method of indicating implicitly through physical layer control signaling, a power control parameter set to be applied may be determined according to an RNTI value scrambling to the CRC of the corresponding physical layer control signaling. For example, when MCS-C-RNTI is additionally configured for a certain terminal in addition to C-RNTI, or when new-RNTI for indicating other power control parameter sets is defined and configured, an uplink grant for a corresponding terminal A power control parameter set for power control of the corresponding PUSCH transmission may be determined according to the RNTI value scrambled to the CRC of .

Example 3-2. Application of multiple transmission power control equations based on reliability requirements

As another method for defining different power control procedures for each target BLER in one terminal, different power control equations may be defined and applied for each target BLER.

For example, for PUSCH transmission satisfying the existing target BLER of 10 ^-1 , the power control procedure based on Equation (1) is applied, and for PUSCH transmission satisfying the target BLER of 10 ^-5 , a new It can be defined to apply the power control equation (2) by defining it.

Accordingly, when the PUSCH is transmitted from any UE, the corresponding Equation (1) or Equation (2) is applied according to the target BLER, respectively. However, the present embodiment may be applied regardless of the specific power control equation, that is, the form of equations (1) and (2).

That is, in all cases where different power control equations are defined for each target BLER and PUSCH transmission power is derived based on a separately defined power control equation according to the target BLER required for arbitrary PUSCH transmission, included in the category.

Also, as described above, regardless of a specific target BLER value defined for PUSCH transmission, all cases in which separate power control equations are defined for different target BLERs are also included in the scope of this embodiment.

As such, when a PUSCH transmission power control equation is separately defined for each target BLER, as a method for indicating an equation to be applied for an arbitrary PUSCH transmission in a certain UE, the equation to be applied for the corresponding PUSCH transmission in the corresponding UE is Set by the base station and transmitted to the corresponding terminal through higher layer signaling, or explicitly indicate an equation to be applied through physical layer control signaling, or PUSCH resource allocation type (type A or type B), time-domain symbol allocation It can be defined to indicate implicitly as a function such as information.

Physical layer control signaling, for example, may mean DCI such as an uplink grant or TPC command transmitted through the PDCCH. The time-domain symbol allocation information may include, for example, the number of allocated symbols or information on slot-based allocation versus non-slot-based allocation.

Alternatively, the base station sets a target BLER value required for PUSCH transmission of the corresponding terminal and transmits it through higher layer signaling, or by explicitly or implicitly indicating through physical layer control signaling as described above, corresponding to the corresponding target BLER It can be defined to apply the power control equation of

The physical layer control signaling may be an uplink grant transmitted through the PDCCH or may be through DCI such as a TPC command. As a method of indicating implicitly through physical layer control signaling, a power control equation to be applied may be determined according to an RNTI value scrambled in the CRC of the corresponding physical layer control signaling. For example, when MCS-C-RNTI is additionally configured in addition to C-RNTI for an arbitrary terminal, or when new-RNTI for indicating other power control parameter sets is newly defined and the corresponding new-RNTI is set, the corresponding A power control equation for power control of the corresponding PUSCH transmission may be determined according to the RNTI value scrambled in the CRC of the uplink grant for the UE.

Additionally, in the example of Example 3 above, as a method of defining a new Equation (2) for a target BLER of 10 ^-5 , which is a new target BLER value, a parameter related to power boosting compared to Equation (1) Equation (2) may be defined in the form of adding an in delta.

In the form of adding a delta, which is a parameter related to power boosting compared to Equation (1), in a PUSCH transmission period i (PUSCH transmission period i), the transmission power (P _{PUSCH, f, c} (i, j, qd, l)) may be as in Equation (2) below.

을 제외하고 다른 값들은 수학식 1과 동일할 수 있다. Delta value in Equation 2

Except for , other values may be the same as in Equation 1.

을 정의함에 있어서 고정된 단일한 델타값

이 정의되거나, 기지국에 의해 단일한 델타값

이 설정되어 상위계층 시그널링을 통해 단말에 전송될 수 있다. 또는 해당 델타값

을 정의하는 또 다른 방법으로서, 해당 델타값

을 적용하기 위한 복수의 고정된 후보(candidate) 델타 값들로 구성된 테이블로 정의되거나, 해당 테이블을 구성하기 위한 복수의 후보 델타값들을 기지국에서 설정하여 상위계층 시그널링을 통해 각각의 단말로 전송하도록 정의할 수 있다. However, the corresponding delta value

A single, fixed delta value in defining

is defined, or a single delta value by the base station

This may be configured and transmitted to the terminal through higher layer signaling. or its delta value

As another way to define the delta value

It is defined as a table consisting of a plurality of fixed candidate delta values for applying can

은 상향링크 그랜트와 같은 물리계층 제어 시그널링을 통해 해당 단말에 지시되거나, 상위계층 시그널링을 통해 설정되어 단말로 전송될 수 있다. However, when a plurality of delta values are defined, a delta value to be applied to each PUSCH transmission

may be indicated to the corresponding terminal through physical layer control signaling such as an uplink grant, or may be set through higher layer signaling and transmitted to the terminal.

In the above-described embodiment 3, it has been described that different power control is applied for each reliability request or for each target BLER. Different power control can be applied regardless of reliability requirements or target BLER. Hereinafter, methods for controlling transmission power of an uplink data channel of a terminal and a base station to which different power controls are applied irrespective of a reliability request or a target BLER will be described.

22 is a flowchart of a method for a terminal to control transmission power of an uplink data channel in the third embodiment.

Referring to FIG. 22 , in a method for a terminal to control transmission power of an uplink data channel, applying different power control to an uplink data channel ( S2210 ) and transmitting an uplink data channel to which different power control is applied It includes a step (S2220) of doing.

In the step of applying different power control to the uplink data channel (S210),

A transmit power control equation for a single uplink data channel is applied, a plurality of power control parameters or parameter sets to be applied to the transmit power control equation are set, and one of a plurality of set power control parameters or parameter sets is applied. The transmit power of the uplink data channel can be controlled based on the transmit power control parameter or a single transmit power control equation to which the parameter set is applied. Specific details thereof are the same as those described in detail in Example 3-1-1.

The power control parameter or parameter set may be set in the corresponding terminal through higher layer signaling.

In addition, the power control parameter or parameter set may be independently transmitted to the corresponding terminal through higher layer signaling, explicitly indicated through physical layer control signaling, or implicitly indicated.

A method in which one power control parameter or parameter set is implicitly indicated through physical layer control signaling may be indicated by an RNTI value scrambled to CRC for physical layer control channel transmission.

In the step of applying different power control to the uplink data channel (S210),

Define a plurality of transmit power control equations to be applied to the uplink data channel, and apply power control to the uplink data channel by applying one transmit power control equation among the plurality of transmit power control equations can do. Specific details thereof are the same as those specifically described in Example 3-1-2 described above.

One of the transmit power control equations for the uplink data channel may further include a power boosting related parameter.

One transmission power control equation to be applied to uplink data channel transmission may be set through higher layer signaling or may be explicitly or implicitly indicated through physical layer control signaling.

A method in which one power control equation is implicitly indicated through physical layer control signaling may be indicated by an RNTI value scrambled to CRC for physical layer control channel transmission.

23 is a flowchart of a method for a base station to receive an uplink data channel in Embodiment 3;

Referring to FIG. 23, the method for the base station to receive an uplink data channel includes the steps of explicitly transmitting or implicitly instructing the terminal control information indicating different power control on the uplink data channel (S2310) and and receiving an uplink data channel to which different power control is applied ( S2320 ). In the step of receiving the uplink data channel (S2320), a transmission power control equation for a single uplink data channel is applied,

Applying a transmit power control equation for a single uplink data channel, setting a plurality of power control parameters or parameter sets to be applied to the transmit power control equation, and setting one of a plurality of set power control parameters or parameter sets It is possible to control the transmit power of the uplink data channel based on a single transmit power control equation to which the transmit power control parameter or parameter set of is applied. Specific details thereof are the same as those described in detail in Example 3-1-1.

The power control parameter or parameter set may be set in the corresponding terminal through higher layer signaling.

One parameter or parameter set to be applied to a single transmit power control equation may be independently transmitted to the corresponding terminal through higher layer signaling, explicitly indicated through physical layer control signaling, or implicitly indicated. .

A method in which one power control parameter or parameter set is implicitly indicated through physical layer control signaling may be indicated by an RNTI value scrambled to CRC for physical layer control channel transmission.

In the step of receiving the uplink data channel (S2320), power control for the uplink data channel is performed by applying one transmit power control equation among a plurality of transmit power control equations to be applied to the uplink data channel. can be applied. Specific details thereof are the same as those specifically described in Example 3-1-2 described above.

One of the transmit power control equations for the uplink data channel may further include a power boosting related parameter.

One transmission power control equation to be applied to uplink data channel transmission may be set through higher layer signaling or may be explicitly or implicitly indicated through physical layer control signaling.

A method in which one power control equation is implicitly indicated through physical layer control signaling may be indicated by an RNTI value scrambled to CRC for physical layer control channel transmission.

24 is a diagram showing the configuration of a base station according to the third embodiment.

Referring to FIG. 24 , a base station 2400 according to another embodiment includes a controller 2410 , a transmitter 2420 , and a receiver 2430 .

In the method for controlling the transmission power of the uplink data channel in the next-generation wireless network necessary for carrying out the present invention, the control unit 2410 applies different power control parameter sets to the transmission power control function according to the target BLER. Controls the overall operation of the base station 2400 according to the method characterized in that.

The transmitter 2420 and the receiver 2430 are used to transmit and receive signals, messages, and data necessary for carrying out the present invention with the terminal.

The base station 2400 receiving the uplink data channel explicitly transmits control information instructing different power control to the uplink data channel to the terminal or implicitly instructs the terminal to the transmitter 2420 and the uplink data channel may include a receiver 2430 for receiving an uplink data channel to which different power control is applied.

The control unit 2410 applies a transmit power control equation for a single uplink data channel, applies a transmit power control equation for a single uplink data channel, but applies a plurality of transmit power control equations to the transmit power control equation. Set the power control parameter or parameter set of , and the transmit power of the uplink data channel based on a single transmit power control equation to which one transmit power control parameter or parameter set among a plurality of set power control parameters or parameter sets is applied. can be controlled Specific details thereof are the same as those described in detail in Example 3-1-1.

The power control parameter or parameter set may be set in the corresponding terminal through higher layer signaling.

One power control parameter or parameter set to be applied to a single transmission power control equation is each independently transmitted to the corresponding terminal through higher layer signaling, explicitly indicated through physical layer control signaling, or implicitly indicated. can

A method in which one power control parameter or parameter set is implicitly indicated through physical layer control signaling may be indicated by an RNTI value scrambled to CRC for transmission of the physical layer control channel.

Power control for the uplink data channel may be applied by applying one transmit power control equation among a plurality of transmit power control equations to be applied to the uplink data channel. Specific details thereof are the same as those specifically described in Example 3-1-2 described above.

One of the transmit power control equations for the uplink data channel may further include a power boosting related parameter.

One transmission power control equation to be applied to uplink data channel transmission may be set through higher layer signaling or may be explicitly or implicitly indicated through physical layer control signaling.

A method in which one power control equation is implicitly indicated through physical layer control signaling may be indicated by an RNTI value scrambled to CRC for physical layer control channel transmission.

25 is a diagram showing the configuration of a user terminal according to the third embodiment.

Referring to FIG. 25 , the user terminal 2500 according to the third embodiment includes a receiver 2510 , a controller 2520 , and a transmitter 2530 .

The receiver 2510 receives downlink control information, data, and a message from the base station through a corresponding channel.

In addition, the control unit 2520 controls the overall operation of the user terminal 2500 according to the method of controlling the transmission power of the uplink data channel in the next-generation wireless network required to carry out the present invention.

The transmitter 2530 transmits uplink control information, data, and a message to the base station through a corresponding channel.

The terminal 2500 for controlling the transmission power of the uplink data channel includes a controller 2520 that applies different power controls to the uplink data channel and a transmitter 2530 that transmits the uplink data channel to which different power controls are applied. may include

The controller 2520 applies the transmit power control equation for a single uplink data channel, sets a plurality of power control parameters or parameter sets to be applied to the transmit power control equation, and sets the plurality of set power control parameters Alternatively, one transmit power control parameter among the parameter sets or the transmit power of the uplink data channel may be controlled based on a single transmit power control equation to which the parameter set is applied. Specific details thereof are the same as those described in detail in Example 3-1-1.

The power control parameter or parameter set may be set in the corresponding terminal through higher layer signaling.

One parameter or parameter set to be applied to a single transmit power control equation may be independently transmitted to the corresponding terminal through higher layer signaling, explicitly indicated through physical layer control signaling, or implicitly indicated. .

A method in which one power control parameter or parameter set is implicitly indicated through physical layer control signaling may be indicated by an RNTI value scrambled to CRC for physical layer control channel transmission.

The controller 2520 defines a plurality of transmit power control equations to be applied to the uplink data channel, and applies one transmit power control equation among the plurality of transmit power control equations for the uplink data channel. Power control can be applied. Specific details thereof are the same as those specifically described in Example 3-1-2 described above.

One of the transmit power control equations for the uplink data channel may further include a power boosting related parameter.

One transmission power control equation to be applied to uplink data channel transmission may be set through higher layer signaling or may be explicitly or implicitly indicated through physical layer control signaling.

A method in which one power control equation is implicitly indicated through physical layer control signaling may be indicated by an RNTI value scrambled to CRC for physical layer control channel transmission.

According to the above-described embodiments, it is possible to efficiently control transmission power of an uplink data channel in a next-generation wireless network.

According to the above-described embodiments, in a next-generation wireless network, uplink data transmission resources between terminals having different latency requirements are efficiently multiplexed or having different latency requirements. The terminal can efficiently control the power of the uplink data channel.

The contents described in Embodiments 1 to 3 described above may be independently applied to other embodiments. For example, in Example 2, multiplexing of uplink data channel transmission between terminals has been described, and in Example 3, control of multiple transmission power of a reliability request-based uplink data channel in one terminal has been described. In this case, while applying the multiplexing of uplink data channel transmission between terminals in Embodiment 2, it is also possible to apply multiplex transmission power control of the uplink data channel based on the reliability request in Embodiment 3 in one terminal.

Although the above-described embodiments provide a method for controlling transmission power of an uplink data channel and a transmission operation of the terminal in a next-generation wireless network, the present invention is not limited thereto.

For example, the present invention includes a method for controlling transmission power of an uplink data channel in a next-generation wireless network and a transmission operation of the terminal. For example, the plurality of uplink transmissions may include PUCCH and PUSCH, PUCCH and PUCCH, PUSCH and SRS, and PUCCH and SRS.

The above-described embodiments may be supported by standard documents disclosed in at least one of IEEE 802, 3GPP and 3GPP2, which are wireless access systems. That is, steps, configurations, and parts not described in order to clearly reveal the present technical idea among the present embodiments may be supported by the above-described standard documents. In addition, all terms disclosed in this specification can be described by the standard documents disclosed above.

The above-described embodiments may be implemented through various means. For example, the present embodiments may be implemented by hardware, firmware, software, or a combination thereof.

In the case of implementation by hardware, the method according to the present embodiments may include one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), FPGAs (Field Programmable Gate Arrays), may be implemented by a processor, a controller, a microcontroller, a microprocessor, and the like.

In the case of implementation by firmware or software, the method according to the present embodiments may be implemented in the form of an apparatus, procedure, or function that performs the functions or operations described above. The software code may be stored in the memory unit and driven by the processor. The memory unit may be located inside or outside the processor, and may transmit/receive data to and from the processor by various well-known means.

Also, as described above, the terms "system", "processor", "controller", "component", "module", "interface", "model", "unit", etc. generally refer to computer-related entities hardware, hardware and software. may mean a combination, software, or software in execution. For example, the aforementioned component may be, but is not limited to, a process run by a processor, a processor, a controller, a controlling processor, an object, a thread of execution, a program, and/or a computer. For example, both an application running on a controller or processor and a controller or processor can be a component. One or more components may reside within a process and/or thread of execution, and components may reside on one machine or be distributed across more than one machine.

The above description and the accompanying drawings are merely illustrative of the present technical idea, and those of ordinary skill in the art may combine, separate, substitute and Various modifications and variations such as changes are possible. Accordingly, the embodiments disclosed in the present specification are for explanation rather than limitation of the technical idea, and the scope of the present technical idea is not limited by these embodiments. The scope of protection of the present technical idea should be construed by the claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present specification.

Claims (20)

A method for a terminal to control transmission power of an uplink data channel, the method comprising:
applying power control to transmission of an uplink data channel; and
Comprising the step of transmitting the uplink data channel with transmission power to which power control is applied,
The step of applying the power control comprises:
Receives first downlink control information indicating one parameter set selected for the uplink data channel from among a plurality of parameter sets including values of power control parameters constituting a single transmission power control equation, and 1 Applying the transmit power of the uplink data channel based on the result of applying one parameter set indicated by the downlink control information to the single transmit power control equation;
Transmission of the uplink data channel,
When second downlink control information indicating cancellation of transmission of the uplink data channel is received, the method is stopped after a predetermined delay time elapses at the time when the second downlink control information is received. The method of claim 1,
The plurality of parameter sets are
A method configured in the corresponding terminal through higher layer signaling. The method of claim 1,
Transmitting the uplink data channel comprises:
A method of transmitting the uplink data channel through an activated uplink bandwidth part among a plurality of uplink bandwidth parts configured for the terminal. The method of claim 1,
The predetermined delay time is
A method determined based on the capability of the terminal. The method of claim 1,
The second downlink control information,
A method of terminal group common downlink control information. A method for a base station to receive an uplink data channel, the method comprising:
transmitting a plurality of parameter sets including values of power control parameters constituting a single transmission power control equation to the terminal;
transmitting first downlink control information indicating one parameter set selected for the uplink data channel from among the plurality of parameter sets; and
Receiving the uplink data channel to which power control is applied based on one parameter set indicated by the first downlink control information;
Reception of the uplink data channel,
When second downlink control information instructing cancellation of transmission of the uplink data channel is transmitted, the second downlink control information is stopped after a predetermined delay time has elapsed from the time when the second downlink control information is received by the terminal method. 7. The method of claim 6,
The plurality of parameter sets are
A method of transmitting to the terminal through higher layer signaling. 7. The method of claim 6,
Receiving the uplink data channel comprises:
A method of receiving the uplink data channel through an activated uplink bandwidth part among a plurality of uplink bandwidth parts configured for the terminal. 7. The method of claim 6,
The predetermined delay time is
A method determined based on the capability of the terminal. 7. The method of claim 6,
The second downlink control information,
A method of terminal group common downlink control information. In the terminal for controlling the transmission power of the uplink data channel,
a control unit that applies power control to transmission of an uplink data channel; and
A transmitter for transmitting the uplink data channel with transmit power to which power control is applied,
The control unit is
Receives first downlink control information indicating one parameter set selected for the uplink data channel from among a plurality of parameter sets including values of power control parameters constituting a single transmission power control equation, and 1 Applying the transmit power of the uplink data channel based on the result of applying one parameter set indicated by the downlink control information to the single transmit power control equation;
Transmission of the uplink data channel,
When second downlink control information indicating cancellation of transmission of the uplink data channel is received, the method is stopped after a predetermined delay time elapses at the time when the second downlink control information is received. 12. The method of claim 11,
The plurality of parameter sets are
A terminal configured to the corresponding terminal through higher layer signaling. 12. The method of claim 11,
The transmitter is
A terminal for transmitting the uplink data channel through an activated uplink bandwidth part among a plurality of uplink bandwidth parts configured for the terminal. 12. The method of claim 11,
The predetermined delay time is
A terminal determined based on the capability of the terminal. 12. The method of claim 11,
The second downlink control information,
A terminal that is terminal group common downlink control information. As a base station for receiving an uplink data channel,
A first parameter set for transmitting a plurality of parameter sets including values of power control parameters constituting a single transmission power control equation to the terminal, and indicating one parameter set selected for the uplink data channel from among the plurality of parameter sets 1 A transmitter for transmitting downlink control information; and
a receiver configured to receive the uplink data channel to which power control is applied based on one parameter set indicated by the first downlink control information;
The transmitter is
Reception of the uplink data channel,
When second downlink control information instructing cancellation of transmission of the uplink data channel is transmitted, the second downlink control information is stopped after a predetermined delay time has elapsed from the time when the second downlink control information is received by the terminal base station. 17. The method of claim 16,
The plurality of parameter sets are
A base station transmitted to the terminal through higher layer signaling. 17. The method of claim 16,
The receiving unit,
A base station for receiving the uplink data channel through an activated uplink bandwidth part among a plurality of uplink bandwidth parts configured for the terminal. 17. The method of claim 16,
The predetermined delay time is
A base station determined based on the capability of the terminal. 17. The method of claim 16,
The second downlink control information,
A base station that is terminal group common downlink control information.

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