RU2774980C2 - Method and equipment for transmission of different uplink control information in wireless communication system - Google Patents

Abstract

FIELD: wireless communication.

SUBSTANCE: invention relates to a wireless communication system and to a method for setting a resource of transmission via an uplink control channel in a mobile communication system of a next generation, in particular in 5G communication system. The method includes the identification of the first format of a physical uplink control channel (hereinafter – PUCCH) for the reception acknowledgement/negative acknowledgement (hereinafter – ACK/NACK) and the second PUCCH format for a service request (hereinafter – SR), identification of that ACK/NACK transmission and SR transmission are overlapped at a time interval, transmission to a base station of ACK/NACK at a time interval, when the first PUCCH format is PUCCH format 0, and transmission to the base station of ACK/NACK without SR at a time interval, when the first PUCCH format is PUCCH format 1, and the second PUCCH format is PUCCH format 0.

EFFECT: providing the flexibility via control channels by the transmission of a downlink control channel in a specific frequency sub-band without the transmission via the entire frequency band of a system.

15 cl, 14 dwg, 10 tbl

Description

The field of technology to which the invention belongs

[1] The present disclosure relates generally to a wireless communication system and a method for setting a transmission resource on an uplink control channel in a next generation mobile communication system.

State of the art

[2] In order to meet the increased demand for wireless data traffic since the deployment of 4G communication systems, efforts have been made to develop an improved 5G or pre-5G communication system. Therefore, the 5G or pre-5G communication system is also referred to as "out-of-4G network" or "post-Long Term Evolution (LTE) system". It is believed that the 5G communication system is implemented in higher frequency bands (mmWave) (for example, in the 60 GHz bands) in order to achieve higher data rates. In order to reduce the propagation loss and increase the transmission distance, Beamforming, Massive Multiple Input Multiple Output (MIMO), Full Size MIMO (FD-MIMO), Array Antenna, Analog Beamforming, Large Scale Antenna Technologies are discussed in 5G communication systems. In addition, in 5G communication systems, developments are underway to improve the system network based on advanced small cells, cloud-based radio access networks (RAN), ultra-dense networks, device-to-device (D2D), wireless backhaul, roaming network, collaborative communication, coordinated multipoint transmission (CoMP), interference suppression at the receiving end, etc. In the 5G system, hybrid FSK and QAM modulation (FQAM) and variable duration windowing superposition coding (SWSC) are developed as advanced coded modulation (ACM), as well as a wireless multi-carrier access interface with filterbanks (FBMC) , non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technology.

[3] The Internet today is evolving into the Internet of Things (IoT) in which distributed objects such as things exchange information and process information without operator intervention. The Internet of Everything (IoE) is emerging, which is a combination of IoT technology and big data processing technology through a connection to a cloud server. Since technology elements such as "recognition technology", "wired/wireless communication and network infrastructure", "interface service delivery technology" and "security technology" are required for IoT implementation, sensor network, machine-to-machine communication ( M2M), machine communication (MTC), etc. Such an IoT environment can provide Internet-based intelligent services that create new value in human life through the collection and analysis of data generated between connected things. The IoT can be applied to many fields of technology, including smart home, smart building, smart city, smart car or connected cars, smart grid, healthcare, smart appliances and advanced medical services, through convergence and combination between existing information technology (IT) and various industrial applications.

[4] According to the above, various attempts are being made to apply 5G communication systems to IoT networks. For example, technologies such as sensor network, MTC and M2M communication can be implemented through beamforming, MIMO antenna and array antennas. The application of cloud RAN as the big data processing technology described above can also be considered as an example of convergence between 5G technology and IoT technology.

[5] In light of the latest development of the LTE standard and the advanced LTE standard, a method and equipment for setting a transmission resource on an uplink control channel is required in a next generation mobile communication system.

The essence of the invention

Technical task

[6] Unlike existing wireless communication systems, a 5G wireless communication system aims to support not only services requiring a high transmission rate, but also services having a very short transmission delay and services requiring a high connection density. According to these scenarios, it is necessary to be able to provide different services with different transmission/reception technologies and transmission/reception parameters in one system in order to meet different user requirements and services, and it is important to design in such a way that additional services are not limited by the existing system considering direct compatibility. Inevitably, the 5G system must be able to use time and frequency resources more flexibly than the existing LTE system. In particular, it is very important to provide flexibility in the design decision on control channels. To this end, in a 5G communication system, a downlink control channel can be transmitted in a specific frequency subband without transmission over the entire system bandwidth, and time and frequency resources for downlink control channel transmission can be configured in each terminal.

[7] In order to achieve an ultra-high-speed data transmission service up to several Gbps in a 5G system, the transmission and reception of signals in an ultra-wide bandwidth from several tens to several hundreds of MHz or up to several GHz is considered. However, it is necessary to effectively control the power consumption of the terminal or the base station through adapting the transmission/reception bandwidth in accordance with such a relationship that the power consumption increases in proportion to the transmission/reception bandwidth. While the base station can be supplied with power at any time, the terminal has a relatively higher need for efficient power consumption management due to battery capacity limitations. Accordingly, when the transmission/reception of ultra-wideband signals is not required for the terminal, the base station can efficiently control the power consumption of the terminal by changing the transmission/reception bandwidth of the terminal to a narrow band.

[8] As described above, in an operation in which the transmission/reception bandwidth of the terminal is adapted or changed, the base station must efficiently configure the control resource set in which the downlink control channel is transmitted, or the resources in which the uplink control channel (PUCCH) is transmitted at the terminal, according to the case in which each transmit/receive bandwidth is adapted.

The solution of the problem

[9] The present disclosure is made to address at least the disadvantages described above and provide at least the benefits described below.

[10] In accordance with an aspect of the present disclosure, a method is provided by a terminal in a wireless communication system. The method includes identifying a first physical uplink control channel (PUCCH) format for acknowledgment/denial (ACK/NACK) and a second PUCCH format for a scheduling request (SR), identifying that transmission is an ACK/NACK, and transmitting The SRs overlap in the time slot, transmission, to the base station, ACK/NACK in the time slot, when the first PUCCH format is PUCCH format 0, and transmission, to the base station, ACK/NACK without SR in the time slot, when the first PUCCH -format is PUCCH format 1, and the second PUCCH format is PUCCH format 0.

[11] In accordance with an aspect of the present disclosure, a method is provided by a base station in a wireless communication system. The method includes transmitting, to the terminal, information regarding a first PUCCH format for ACK/NACK and information regarding a second PUCCH format for SR, transmitting an ACK/NACK and transmitting an SR overlap in a time slot, receiving, from the terminal, an ACK/NACK during time slot when the first PUCCH format is PUCCH format 0, and receiving, from the terminal, ACK/NACK without SR in the time slot when the first PUCCH format is PUCCH format 1 and the second PUCCH format is PUCCH -format 0.

[12] In accordance with an aspect of the present disclosure, a terminal is provided in a wireless communication system. The terminal includes a transceiver configured to transmit and receive a signal, and a processor configured to identify a first PUCCH format for ACK/NACK and a second PUCCH format for SR, identify that the ACK/NACK transmission and transmission SRs overlap in the time slot, transmit, to the base station, ACK/NACK in the time slot when the first PUCCH format is PUCCH format 0, and transmit, to the base station, ACK/NACK without SR in the time slot when the first PUCCH -format is PUCCH format 1, and the second PUCCH format is PUCCH format 0.

[13] In accordance with an aspect of the present disclosure, a base station is provided in a wireless communication system. The base station includes a transceiver configured to transmit and receive a signal, and a processor configured to transmit, to the terminal, information regarding a first physical uplink control channel (PUCCH) format for ACK/NACK and information regarding a second scheduling request (SR) PUCCH format, ACK/NACK transmission and SR transmission overlap in the time slot, receive, from the terminal, ACK/NACK in the time slot when the first PUCCH format is PUCCH format 0, and receive, from the terminal, ACK/NACK without SR in the time slot when the first PUCCH format is PUCCH format 1 and the second PUCCH format is PUCCH format 0.

Benefits of the Invention

[14] As described above, the disclosure provides a method and equipment for setting uplink control channel and uplink data channel resources in a 5G communication system so that the 5G system can operate more efficiently.

Brief description of the drawings

[15] The foregoing and other exemplary aspects, features, and advantages of specific embodiments of the disclosure should become more apparent from the following detailed description, taken in conjunction with the accompanying drawings, in which:

[16] FIG. 1 is a diagram of the basic structure of the time-frequency domain in the LTE standard;

[17] FIG. 2 is an LTE downlink control channel diagram;

[18] FIG. 3 is a diagram of a downlink control channel;

[19] FIG. 4 is a diagram of a resource allocation method for a 5G downlink control channel;

[20] FIG. 5 is a diagram of a resource allocation method for a 5G uplink control channel;

[21] FIG. 6 is a partial configuration diagram of 5G bandwidth and uplink control channel resource configuration;

[22] FIG. 7 is a diagram of a transmission/reception bandwidth adaptation operation according to an embodiment;

[23] FIG. 8 is a diagram of a system according to an embodiment.

[24] FIG. 9 is a diagram of a terminal according to an embodiment;

[25] FIG. 10 is an operation diagram of a terminal according to the embodiment;

[26] FIG. 11 is an operation diagram of a terminal according to the embodiment;

[27] FIG. 12 is an internal structure diagram of a terminal according to the embodiment;

[28] FIG. 13 is an internal structure diagram of a base station according to the embodiment; and

[29] FIG. 14 is a diagram of an uplink control channel transmission in an uplink bandwidth part, according to an embodiment.

Optimal Mode for Carrying Out the Invention

[30] Embodiments of the disclosure are described below with reference to the accompanying drawings. However, embodiments of the disclosure are not limited to specific embodiments and should be construed as including all modifications, changes, equivalent devices and methods, and/or alternative embodiments of the present disclosure. In the description of the drawings, like reference numbers are used for like elements.

[31] The terms "have," "may have," "include," and "may include," as used herein, indicate the presence of appropriate features (e.g., elements such as numeric values, functions, operations, or parts) and do not exclude the presence of additional features.

[32] The terms "A or B", "at least one of A or/and B", or "one or more of A or/and B", as used herein, include all possible combinations of elements, enumerated with the signified. For example, "A or B", "at least one of A and B", or "at least one of A or B" means (1) including at least one A, (2) including at least one B, or (3) including at least one A and at least one B.

[33] Terms such as "first" and "second", as used herein, may use the respective components regardless of importance or order, and are used to distinguish a component from another without limiting the components. These terms may be used for the purpose of distinguishing one element from another element. For example, the first user device and the second user device indicate different user devices regardless of order or importance. For example, the first element may be referred to as the second element without departing from the scope of the disclosure, and similarly, the second element may be referred to as the first element.

[34] It should be understood that when an element (e.g., the first element) is "(operationally or functionally) connected to (coupled with/to)" or "connected to (connected to)" another element (e.g., the second element), the element may be directly connected to another element, and an intermediate element (eg, a third element) may be provided between the element and the other element. Conversely, it should be understood that when an element (e.g., the first element) is "directly coupled with/to" or "directly connected to" another element (e.g., the second element), no intermediate element (such as a third element) between an element and another element.

[35] The expression "capable (or configured)", as used herein, can be used interchangeably with "suitable for", "capable", "capable designed", "capable adapted", "implemented with the possibility" or "allowing" according to the context. The term "capable (capable)" does not necessarily mean "specially designed with capability" at the hardware level. Instead, the expression "equipment capable of..." can mean that the equipment "allows..." along with other devices or parts in a particular context. For example, "processor configured to (specified) to perform A, B, and C" can mean a specialized processor (eg, an embedded processor) to perform the corresponding operation, or a general purpose processor (eg, a central processing unit (CPU) or an application processor ( AP)) capable of performing the corresponding operation by executing one or more firmware programs stored in the storage device.

[36] The terms used in describing various embodiments of the disclosure are for the purpose of describing specific embodiments and are not intended to limit the disclosure. As used herein, the singular forms are also intended to include the plural forms, unless the context clearly indicates otherwise. All terms used in this document, including technical or scientific terms, have the same meanings as those commonly understood by those skilled in the art, unless otherwise indicated. Terms defined in the common vocabulary should be interpreted as having meanings identical or similar to the contextual meanings of the relevant technology, and should not be interpreted as having ideal or exaggerated meanings unless expressly stated herein. Under the circumstances, even the terms defined in this entity disclosure should not be interpreted as excluding embodiments of the entity disclosure.

[37] The term "module", as used herein, for example, can mean a unit including one of hardware, software, and firmware, or a combination of two or more of these. "Module" can be used interchangeably with, for example, the terms "unit", "logic", "logical block", "component", or "circuit". A "module" may be the smallest unit of an integral component element, or a portion thereof. A "module" may be a minimal unit for performing one or more functions, or part of them. The "module" may be implemented mechanically or electronically. For example, a "module" according to the disclosure may include at least one of an application specific integrated circuit (ASIC) chip, a field programmable gate array (FPGA), and a programmable logic device to perform operations that are known or to be developed in the future.

[38] An electronic device according to the disclosure may include at least one of, for example, a smartphone, a tablet personal computer (PC), a mobile phone, a video phone, an e-book reader (e-book reader), a desktop PC, a laptop PC, netbook, workstation, server, personal digital device (PDA), portable media player (PMP), MPEG-1 Audio Layer 3 (MP3) based player, mobile medical device, camera, and wearable device. The wearable device may include at least one of an accessory type (e.g., watch, ring, bracelet, anklet, necklace, glasses, contact lenses, or head device (HMD)) integrated into a fabric or clothing type (e.g., electronic clothing), the body-mounted type (such as a skin panel or tattoo) and the bioimplantable type (such as an implantable circuit).

[39] The electronic device may be a household appliance. The home appliance may include, for example, at least one of a television receiver, a digital video disc (DVD) player, an audio player, a refrigerator, an air conditioner, a vacuum cleaner, an oven, a microwave oven, a washing machine, an air purifier, a set-top box, a home automation system control panel, security control panel, set-top box (such as Samsung HomeSync™, Apple TV™, or Google TV™), game console (such as Xbox™ and PlayStation™), electronic dictionary, dongle, camcorder, and electronic photo frame.

[40] The electronic device may include at least one of various medical devices (e.g., various portable medical measuring devices (blood glucose monitors, pulse monitors, blood pressure monitors, body temperature monitors, etc.). .), Magnetic Resonance Angiography (MRA), Magnetic Resonance Imaging (MRI), Computed Tomography (CT) and Diagnostic Ultrasound Machine), Navigation Device, Global Positioning System (GPS) Receiver, Data Recorder event recorder (EDR), flight information recorder (FDR), vehicle infotainment device, marine electronic device (e.g., marine navigation device and gyrocompass), avionics, security devices, automotive head unit, robotic mechanisms, etc. For home or industry, an ATM in banks, point of sale (POS) terminals in a store, or an Internet of Things (IoT)-enabled device (for example, light bulbs, various sensors, an electric or gas meter, a sprinkler (sprinkler), devices fire alarm, thermostat, street lamp, toaster, sporting goods, hot water tank, heater, boiler, etc.).

[41] The electronic device may include at least one of a piece of furniture or a building/structure, an electronic board, an electronic signature receiver, a projector, and various kinds of meters (for example, a water meter, an electric meter, a gas meter, and a radio wave meter) . An electronic device may be a combination of one or more of the various devices mentioned above. The electronic device may also be a flexible device. Additionally, the electronic device is not limited to the above devices, and may include an electronic device according to the development of new technology.

[42] Hereinafter, the electronic device is described with reference to the accompanying drawings. In the disclosure, the term "user" refers to a person using an electronic device, or a device (eg, an electronic device with artificial intelligence functions) using an electronic device.

[43] The wireless communication system is developed from a wireless communication system providing a voice service at the very beginning, with a transition to broadband wireless communication systems providing high-speed, high-quality packet data services such as high-speed packet access (HSPA) communication standards, LTE standard or Evolved Universal Terrestrial Radio Access (E-UTRA), LTE-Advanced (LTE-A) and LTE Pro from 3GPP, High Rate Packet Data (HRPD) and Ultra-Mobile Broadband (UMB) from 3GPP2, IEEE 802.16e etc.

[44] As a representative example of a broadband wireless communication system, an LTE system adopts an orthogonal frequency division multiplexing (OFDM) scheme in a downlink (DL) and adopts a single carrier frequency division multiple access (SC-FDMA) scheme in the uplink (UL). Uplink means a radio link through which a user equipment (UE) or a mobile station (MS) transmits data or a control signal to a base station (evolved Node B or base station (BS)), and downlink means a radio link through which the base station transmits data or a control signal to the terminal. The multiple access scheme as described above normally allocates and manages time-frequency resources in which data or control information is transmitted to each user to prevent time-frequency resources from overlapping (i.e., establish orthogonality), thereby separating data or control information of each user.

[45] As a future communication system since the LTE standard, the 5G communication system should be able to freely reflect different requirements such as user and service provider, a service meeting different requirements should be supported simultaneously. The services considered for the 5G communication system include advanced mobile broadband (eMBB), mass machine communication (mMTC), ultra-reliable low latency communication (URLLC), etc.

[46] eMBB aims to provide a higher data rate than the data rate supported by the existing LTE standard, the LTE-A standard, or the LTE Pro standard. For example, in a 5G communication system, eMBB should be able to provide 20 Gbps peak downlink data rate and 10 Gbps peak uplink data rate from the point of view of one base station. In addition, the 5G communication system must provide an increased user-perceived data rate of the terminal at the same time as providing a peak data rate. In order to meet such a requirement, improvements in various transmission and reception technologies are needed, including further enhanced MIMO transmission technology. In addition, signals are transmitted using transmission bandwidth up to 20 MHz in the 2 GHz frequency band used by the current LTE standard, but the 5G communication system uses a bandwidth wider than 20 MHz in the 3-6 GHz frequency band or more than 6 GHz, thereby satisfying the data rate required in a 5G communication system.

[47] At the same time, mMTC is considered to support application services such as IoT in a 5G communication system. mMTC is required to support large-scale terminal access in a cell, improve terminal coverage, longer battery life, and reduce terminal costs in order to efficiently provide the Internet of Things. The Internet of Things must be able to support a large number of terminals (eg, 1,000,000 terminals/km ² ) in a cell as it connects to various sensors and various devices to provide communication functions. In addition, a terminal supporting mMTC is more likely to be positioned in shaded areas not covered by a cell, such as underground areas of a building, due to the nature of the services. Thus, the terminal requires a wider coverage than other services provided by the 5G communication system. Terminals that support mMTC must be configured as low cost terminals and require very long battery life, eg 10-15 years, since it is difficult to replace the terminal's battery frequently.

[48] Finally, in the case of URLLC, it is a cellular wireless service used for mission critical purposes. For example, services used for remote control for robotic mechanisms or machinery, industrial automation, unmanned aerial vehicles, remote medical services, emergency alerts, and the like may be considered. Therefore, the communication provided by URLLC must provide very low latency and very high reliability. For example, a service that supports URLLC must satisfy an air interface delay of less than 0.5 milliseconds and at the same time have a packet error rate requirement of less than 10 ^-5 . Therefore, for a service that supports URLLC, the 5G system must provide a transmission time interval (TTI) that is smaller than other services, and at the same time, design aspects are required to allocate wide resources in the frequency band to ensure link reliability.

[49] 5G services (eg, eMBB, URLLC, and mMTC) can be multiplexed and transmitted on the same system. In this case, different transmission/reception technologies and transmission/reception parameters may be used between services to satisfy the different requirements of the respective services.

[50] Later in this document, the frame structure of LTE and LTE-A systems is described in more detail with reference to the drawings.

[51] FIG. 1 is a diagram of a basic structure of a time-frequency domain, which is a radio resource domain in which data or a control channel is transmitted in a downlink, in an LTE system.

[52] FIG. 1, the abscissa represents the time domain and the ordinate represents the frequency domain. The minimum transmission unit in the time domain is an OFDM symbol, with one slot 102 configured by collecting N _symb OFDM symbols 101 and one subframe 103 configured by collecting two slots. The slot length is 0.5 ms and the subframe length is 1.0 ms. Additionally, radio frame 104 is a time domain unit consisting of 10 subframes. The minimum transmission unit in the frequency domain is a subcarrier, with the total transmission bandwidth of the system being the sum of N _BW subcarriers 105. The basic resource unit in the frequency-time domain is a resource element (RE) 106 and can be represented by an OFDM symbol index and subcarrier index. A resource block (RB) 107 (or a physical resource block (PRB)) is defined by N _symb contiguous OFDM symbols 101 in the time domain and N _RB contiguous subcarriers 108 in the frequency domain. Therefore, one RB 107 consists of N _symb *N _RB RE 106. In general, the minimum data transmission unit is an RB unit. In an LTE system, in general, N _symb =7 and N _RB =12, and N _BW and N _RB are proportional to the transmission bandwidth of the system.

[53] The following describes in detail the control information downlink (DCI) in LTE and LTE-A systems.

[54] In an LTE system, scheduling information for downlink data or uplink data is transmitted from a base station to a terminal via DCI. The DCI is given in various formats, and thus DCI formats are applied depending on whether or not the scheduling information regarding uplink data and the scheduling information regarding downlink data is DCI or not, whether or not compact DCI is DCI, having a small size of control information, whether or not spatial multiplexing using multiple antennas should be applied, whether or not DCI is DCI for power control, and the like. and are managed. For example, DCI format 1, which is scheduling control information regarding downlink data, is configured to include at least the following control information.

[55] (1) Resource allocation type 0/1 flag: Whether the resource allocation scheme is type 0 or type 1 is notified. Type 0 applies a bitmap scheme to allocate resources in a resource block group (RBG) unit. In the LTE system, the basic scheduling unit is an RB represented by the time-frequency domain resource, and the RBG is configured from a plurality of RBs and thus becomes the basic scheduling unit in the type 0 scheme. Type 1 allocates a specific RB within the RBG.

[56] (2) Allocation of resource blocks: The RB allocated for data transmission is notified.

The resource represented is determined based on the system bandwidth and resource allocation scheme.

[57] (3) Modulation and coding scheme (MCS): The modulation scheme used for data transmission and the transport block size, which is the data to be transmitted, are notified.

[58] (4) Hybrid Automatic Repeat Request (HARQ) process number: The HARQ process number is notified.

[59] (5) New data indicator: The initial or retransmission HARQ is notified.

[60] (6) Backup version: The backup HARQ version is notified.

[61] (7) Transmit Power Control (TPC) command for PUCCH: The transmit power control command for PUCCH, which is an uplink control channel, is notified.

[62] The DCI undergoes a channel coding and modulation process and then transmitted via a Physical Downlink Control Channel (PDCCH) or an Enhanced PDCCH (EPDCCH), which is a Physical Downlink Control Channel.

[63] A cyclic redundancy check (CRC) is attached to the payload data of the DCI message, and the CRC is scrambled with a radio network temporary identifier (RNTI) corresponding to the terminal identification data. Different RNTIs are used depending on the purpose of the DCI message (eg, UE-specific data transmission, power control command, or random access response). RNTI is not transmitted explicitly, but is transmitted by inclusion in the CRC calculation process. When receiving a DCI message transmitted on the PDCCH, the terminal checks the CRC using the allocated RNTI. If the result of the CRC acknowledgment is correct, the terminal may know that a message is being sent to the terminal.

[64] FIG. 2 is a diagram of PDCCH 201 and EPDCCH 202, which are physical downlink control channels over which LTE DCI is transmitted.

[65] Referring to FIG. 2, PDCCH 201 is time multiplexed (TDM) with PDSCH 203, which is a data channel and is transmitted over the full system bandwidth. The PDCCH region 201 is represented by the number of OFDM symbols, which is indicated to the terminal by a Control Channel Format Indicator (CFI) transmitted via a Control Channel Format Indicator (PCFICH) Physical Channel. The PDCCH 201 is allocated to the OFDM symbol in the subframe header such that the terminal can decode the allocation for downlink scheduling as quickly as possible. Thus, the decoding delay for the downlink shared channel (DL-SCH). The overall downlink transmission delay may be reduced. One PDCCH carries one DCI message, and multiple terminals can be scheduled simultaneously in the downlink and uplink such that multiple PDCCHs are simultaneously transmitted in each cell. The CRS 204 is used as a reference signal for decoding the PDCCH 201. The CRS 204 is transmitted every subframe over the entire frequency band, and its scrambling and resource mapping are changed according to the cell ID (ID). UE-specific beamforming cannot be used because CRS 204 is the reference signal most frequently used by all terminals. Therefore, the multi-antenna transmission technology for the LTE PDCCH is limited to open loop transmission diversity. The number of CRS ports is implicitly notified to the terminal from the Physical Broadcast Channel (PBCH) decoding.

[66] The resource allocation of the PDCCH 201 is based on a Control Channel Element (CCE), and one CCE is composed of nine Resource Element Groups (REGs), i. a total of 36 RE. The number of CCEs required for a particular PDCCH 201 may be 1, 2, 4, or 8, which varies depending on the channel coding rate of the payload data of the DCI message. In this regard, a certain number of different CCEs are used in order to implement link adaptation of the PDCCH 201. The terminal must detect the signal without knowing the information about the PDCCH 201. In the LTE standard, a search space is defined to represent a set of CCEs for blind decoding. The search space includes a plurality of aggregates at the aggregation level (AL) of each CCE, which is not signaled explicitly, but is implicitly specified by a function and a subframe number by a terminal identifier. In each subframe, the terminal decodes the PDCCH 201 for all possible resource opportunities that can be generated from the CCEs in the given search space, and transmits information that is declared valid to the terminal via CRC control.

[67] The search space is classified into a UE-specific search space and a general search space. Terminals in a certain group or all terminals may explore the common search space of the PDCCH 201 to receive cell-wide control information such as dynamic scheduling or a paging message for system information. For example, allocation information for scheduling a DL-SCH for transmitting a system information block (SIB) 1 including cell operator information can be received by examining the common search space of the PDCCH 201.

[68] Referring to FIG. 2, EPDCCH 202 is frequency multiplexed (FDM) with PDSCH 203 and transmitted. The base station can appropriately allocate EPDCCH 202 and PDSCH 203 resources through scheduling, thereby effectively supporting data sharing for an existing LTE terminal. However, since the EPDCCH 202 is allocated one subframe on the time axis and transmitted, there is a problem that loss occurs in terms of transmission delay time. A plurality of EPDCCHs 202 configure one set of EPDCCHs 202, and the set of EPDCCHs 202 is allocated in terms of physical resource block (PRB) pairs. The position information regarding the EPDCCH set is set to be UE-specific and signaled via Radio Remote Control (RRC). A maximum of two EPDCCH 202 sets may be configured in each terminal, and one EPDCCH 202 set may be multiplexed and configured in different terminals at the same time.

[69] Resource allocation of EPDCCH 202 is based on Enhanced CCE (ECCE), and one ECCE may consist of four or eight Enhanced REGs (EREGs), and the number of EREGs per ECCE varies depending on the CP-length and configuration information of the subframe. One EREG includes 9 REs, so 16 EREGs per PRB pair can be provided. The EPDCCH transmission scheme is classified into localized/distributed transmission according to the EREG RE mapping scheme. The ECCE aggregation level may be 1, 2, 4, 8, 16, or 32, as determined by the CP length, subframe configuration, EPDCCH format, and transmission scheme.

[70] EPDCCH 202 only supports a UE-specific search space. Therefore, a terminal that intends to receive a system message must examine the common search space on the existing PDCCH 201.

[71] In EPDCCH 202, a demodulation reference signal (DMRS) 205 is used as a reference signal and a demodulation reference signal for decoding. Thus, precoding for EPDCCH 202 may be configured by the base station, and UE-specific beamforming may be used. Through DMRS 205, terminals can perform decoding for EPDCCH 202 without knowing which precoding is being used. In EPDCCH 202, an identical pattern is used with DMRS 205 of PDSCH 203. However, unlike PDSCH 203, DMRS 205 in EPDCCH 202 can support transmission using up to four antenna ports. The DMRS 205 is only transmitted in the corresponding PRB in which the EPDCCH is transmitted.

[72] The configuration information of the ports of the DMRS 205 varies depending on the transmission scheme of the EPDCCH 202. In a localized transmission scheme, an antenna port corresponding to the ECCE into which the EPDCCH 202 is mapped is selected based on the terminal ID. If different terminals share the same ECCE (eg, multi-user MIMO transmission is used), a DMRS antenna port may be allocated to each terminal. Alternatively, DMRS 205 may be shared and transmitted. The DMRS 205 may be divided into a scrambling sequence configured as upper layer signaling. In the distributed transmission scheme, up to two DMRS 205 antenna ports are supported, and the precoder cycling scheme diversity technology is supported. DMRS 205 may be shared across all REs transmitted on the same PRB pair.

[73] In the above description, a downlink control channel transmission scheme in the legacy LTE standard and the LTE-A and RS standard for decoding it is described.

[74] Hereinafter, this document describes in more detail the downlink control channel in the currently discussed 5G communication system.

[75] FIG. 3 is a diagram of a basic unit of time and frequency resources configuring a downlink control channel that can be used in 5G. Referring to FIG. 3 in base units (the base units may be called "REG", "REG based on the new radio standard (NR)", etc.). Hereinafter, the base units are called "NR REG 303" of time and frequency resources configuring the control channel, and one OFDM symbol 301 is configured on the time axis, and 12 subcarriers 302 (for example, 1RB is configured on the frequency axis). The data channel and the control channel may be time-multiplexed in one subframe by assuming that the base unit on the time axis is one OFDM symbol 301 when configuring the control channel base unit. By placing the control channel before the data channel, it is possible to reduce the processing time of the user and easily meet the delay time requirement. By setting the frequency axis base unit of the control channel as 1 RB 302, frequency multiplexing between the control channel and the data channel can be more efficiently performed.

[76] By concatenating the NR base units REG 303 illustrated in FIG. 3, it is possible to define control channel regions having different sizes. For example, if the base unit in which a 5G downlink control channel is allocated is NR CCE 304, 1 NR CCE 304 may be configured as a plurality of NR REG 303. If NR REG 303 may be composed of 12 REs, and 1 NR CCE 304 may consist of 4 NR REG 303, 1 NR CCE 304 may consist of 48 RE. If a downlink control resource set is configured, the corresponding region may include a plurality of CCE NRs 304. A specific downlink control channel may be mapped to one or a plurality of CCE NRs 304 according to AL in the control resource set and transmitted. The NR CCEs 304 in the control resource set are identified by a number, and the number may be set according to the mapping logic.

[77] The base unit of the downlink control channel is shown in FIG. 3. The NR REG 303 may include all regions in which the RE to which the DCI is converted and the DMRS 305 as a reference signal for RE decoding are converted to each other. The DMRS 305 can be efficiently transmitted in consideration of the overhead due to the RS allocation. For example, when a downlink control channel is transmitted using a plurality of OFDM symbols, DMRS 305 may be transmitted on only the first OFDM symbol. The DMRS 305 may be transmitted by converting between them considering the number of antenna ports used to transmit the downlink control channel. Fig. 3 shows an example in which two antenna ports are used. DMRS 306 transmitted for antenna port #0 and DMRS 307 transmitted for antenna port #1 may be provided. DMRS for different antenna ports can be multiplexed in different ways. Fig. 3 shows an example in which DMRSs corresponding to different antenna ports are transmitted due to orthogonality to each other in different REs. In this regard, DMRS may be transmitted via FDM multiplexing or transmitted via CDM multiplexing. In addition, various types of DMRS patterns may also be provided, which may be associated with the number of antenna ports. Hereinafter in this document, it is assumed that two antenna ports are used in the description of the disclosure. The same principle in disclosure may apply to two or more antenna ports.

[78] FIG. 4 is a diagram of a control resource set in which a downlink control channel is transmitted in a 5G wireless communication system. In FIG. 4, the system bandwidth 410 is shown on the frequency axis, and the resource area, which is 1 slot 420, is shown on the time axis. In one example of FIG. 4, one slot is assumed to be 7 OFDM symbols, but the case where one slot is assumed to be 14 symbols can also be applied. In FIG. 4, the total system bandwidth 410 may include one bandwidth part or multiple bandwidth parts (e.g., four bandwidth parts as bandwidth part #1 402, bandwidth part #2 403, bandwidth part #3 404, and part #4 405 bandwidth). A bandwidth portion may also be configured, including at least one bandwidth portion, such as bandwidth portion #5 406 . Fig. 4 shows an example in which two control resource sets (control resource set #1 440, control resource set #2 450) are configured. The control resource sets 440 and 450 may be configured to represent specific frequency subbands within the overall system bandwidth 410 on the frequency axis. In FIG. 4, control resource set #1 440 is configured for bandwidth portion #1 402 and bandwidth portion #2 403, and control resource set #2 450 is configured for bandwidth portion #4 405. One or multiple OFDM symbols may be configured on the time axis, which may be defined as control resource set durations 460 and 470. In one example of FIG. 4, control resource set #1 440 is configured to be control resource set duration #1 460 of 2 symbols, and control resource set #2 450 is configured to be control resource set duration #2 470 of 1 symbol.

[79] In a 5G communication system, a plurality of control resource sets may be configured in one system from the point of view of a base station. In addition, a plurality of control resource sets may be configured in one terminal from a terminal point of view. Some configured sets of control resources in the system can be configured in the terminal. Therefore, the terminal may not know whether or not the terminal exists in a particular control resource set existing in the system. In FIG. 4, two sets of control resources in the form of control resource set #1 440 and control resource set #2 450 can be configured in the system, control resource set #1 440 can be configured in terminal #1, and control resource set #1 440 and set #2 450 control resources can be configured in terminal #2. If there is no additional indicator, terminal #1 may not know whether control resource set #2 450 exists or not.

[80] The control resource set in the above-described 5G may be configured as a common control resource set, configured as common to a group of UEs, or configured as specific to a UE. The control resource set may be configured in each terminal via UE-specific signaling, UE-group-wide signaling, or RRC signaling. Configuring the control resource set at the terminal means providing information regarding the position of the control resource set, the frequency subband, the resource allocation for the control resource set, the duration of the control resource set, and the like. For example, configuring a set of control resources may include the following information.

[81] Tab. one

[82]

- Configuration information 1. RB allocation information on the frequency axis - Configuration information 2. Control resource set duration (number of OFDM symbols configured as control resource set) on the time axis - Configuration information 3. Resource conversion scheme (time first conversion, frequency first conversion) - Configuration information 4. Transmission mode (localized transmission scheme, distributed transmission scheme) - Configuration information 5. Search space type (general search space, UE group search space, UE-specific search space) - Configuration information 6. Monitoring period (monitoring period/interval, position of the monitoring symbol in the time interval) - Configuration information 7. DMRS configuration information (DMRS structure, number of DMRS ports) - Configuration Information 8. REG Packet Size

[83] In addition to the above configuration information, various types of information necessary for transmitting the downlink control channel may be configured in the terminal.

[84] FIG. 5 is a diagram of a PUCCH structure in a 5G wireless communication system. Fig. 5 illustrates a method for transmitting, by a terminal, an uplink control channel by determining a transmission interval (either the positions of a start symbol and an end symbol, or the number of start symbols and transmitted symbols) of a long PUCCH based on a time interval, but it can also be applied to the transmission case by terminal, the uplink control channel by determining a section of the long PUCCH transmission based on a mini-slot (or a time interval consisting of a number of symbols less than the number of symbols configuring the time interval). An uplink control channel having a short transmission interval (for example, an uplink control channel consisting of one or two symbols) in order to minimize the transmission delay is called a "short PUCCH", and an uplink control channel having a long a transmission interval (eg, an uplink control channel consisting of at least four symbols) in order to obtain sufficient cell coverage is referred to as a "long PUCCH". The short PUCCH supports two PUCCH formats as PUCCH format 0 and PUCCH format 2, and the long PUCCH supports three PUCCH formats as PUCCH format 1, PUCCH format 3 and PUCCH format 4.

[85] FIG. 5, the long PUCCH and the short PUCCH are frequency domain multiplexed (FDM, 500) or time domain multiplexed (TDM, 501). First, the following describes the slot structure in which the long PUCCH and the short PUCCH are multiplexed with reference to FIG. 5. The basic unit of signaling is described as a time slot, but it can be used with various names such as subframe or transmission time interval (TTI). Reference numbers 530 and 531 indicate a UL-oriented timeslot in which the symbol configuring the timeslot is mainly used as an uplink. Uplink oriented time slot means a case in which most OFDM symbols are used in uplink, in which all OFDM symbols can be used for uplink transmission, or in which multiple OFDM symbols can be used for downlink transmission. communication lines. When a downlink and an uplink are simultaneously present in the same time slot, a transmission dead interval may exist between the downlink and the uplink. Fig. 5 illustrates an example in which the first OFDM symbol in one timeslot is used for downlink transmission, e.g., for downlink control channel transmission 502, and the third OFDM symbol in the last symbol of the timeslot is used for uplink transmission. connections. The second OFDM symbol is used as a transmission dead interval. In uplink transmission, uplink data channel transmission and uplink control channel transmission are possible.

[86] The following describes long PUCCH 503.

[87] Since the long transmission interval control channel is used for cell coverage purposes, the control channel can be transmitted in a DFT-S-OFDM scheme, which is a single carrier transmission rather than an OFDM transmission. Therefore, only contiguous subcarriers should be transmitted. In order to obtain the effect of frequency diversity, the long transmission interval uplink control channel is configured in a diversity position such as links 508 and 509. The frequency diversity distance 505 must be less than or equal to the uplink bandwidth supported by the terminal, or the uplink bandwidth configured in the terminal. In the front of the time slot, as indicated in reference number 508, PRB-1 is used and transmitted, and in the back of the time slot, as indicated in reference number 509, PRB-2 is used and transmitted. The PRB is a physical resource block, which means the minimum transmission unit on the frequency side, and may be defined as 12 subcarriers or the like. Therefore, the distances on the frequency side of PRB-1 and PRB-2 must be less than or equal to the maximum supported terminal bandwidth or the uplink transmission bandwidth configured in the terminal, and the maximum supported terminal bandwidth is less than or equal to the bandwidth 506 supported through the system. The frequency resources PRB-1 and PRB-2 may be configured in the terminal by the high layer signal, the frequency resource is mapped to a bit field by the high layer signal, and the bit field included in the downlink control channel can indicate to the terminal which of frequency resources are being used. In addition, the control channel transmitted at the front of the time slot 508 and the control channel transmitted at the back of the time slot 509 are composed of uplink control information (UCI) 510 and a terminal reference signal 511. It is assumed that these two signals are separated in time and transmitted in an OFDM symbol.

[88] Long PUCCH supports transmission formats such as PUCCH format 1, PUCCH format 3, and PUCCH format 4 according to the number of bits of control information that can be supported and whether or not to support multiplexing of terminals through pre-DFT OCC support during external IFFT interface.

[89] First, PUCCH format 1 is a long PUCCH format based on DFT-S-OFDM, which can support control information up to 2 bits. The control information may consist of a combination of a HARQ-ACK and a scheduling request (SR), or both. PUCCH format 1 has an OFDM symbol including DMRS as a demodulation reference signal and an OFDM symbol including control information (UCI) which are configured multiple times. For example, when the number of PUCCH format 1 symbols to be transmitted is 8 symbols, a DMRS symbol, a UCI symbol, a DMRS symbol, a UCI symbol, a DMRS symbol, a UCI symbol, a DMRS symbol, and a UCI symbol are sequentially generated from the first leading character of 8 characters. A DMRS symbol has a structure in which it is spread-encoded in a sequence corresponding to a length of 1 RB on the frequency axis in one OFDM symbol, with an orthogonal code (or orthogonal sequence, w_i(m)) on the time axis, and transmitted after exposure inverse fast Fourier transform (IFFT). The UCI symbol has a structure in which it generates d(0) by modulating 1-bit control information by BPSK and 2-bit control information by QPSK, scrambles the generated d(0) by multiplying the generated d(0) by a sequence corresponding to the length in 1 RB on the frequency axis, spreads the scrambled sequence with an orthogonal code (or orthogonal sequence, w_i(m)) on the time axis, and is transmitted after IFFT exposure. The terminal generates a sequence based on a group-based hopping pattern or a sequence-based hopping pattern that is configured as an upper layer signal from the base station and a configured identifier, and rotates the generated sequence with a specified cyclic shift (CS) initial value to generate a sequence corresponding to length in 1 RB.

[90] Further, PUCCH format 3 is a DFT-S-OFDM-based long PUCCH format that can support control information of more than 2 bits. The control information may consist of a combination of HARQ-ACK, channel state information (CSI), and SR, or each of these. The position of the DMRS symbol in PUCCH format 3 is shown in the following table 2 according to whether or not frequency hopping is performed and whether additional DMRS symbols are configured or not.

[91] Tab. 2

[92]

Transmission duration in PUCCH format 3/4 DMRS position in transmission in PUCCH format 3/4 No additional DMRS configuration Additional DMRS configuration No frequency hopping configuration Frequency hopping configuration No frequency hopping configuration Frequency hopping configuration four one 0.2 one 0.2 5 0.3 0.3 6 1.4 1.4 7 1.4 1.4 eight 1.5 1.5 9 1.6 1.6 ten 2.7 1,3,6,8 eleven 2.7 1,3,6,9 12 2.8 1,4,7,10 13 2.9 1,4,7,11 fourteen 3.10 1,5,8,12

[93] For example, when the number of PUCCH format 3 symbols to be transmitted is 8 symbols, the first initial symbol of 8 symbols starts from 0, and DMRS is transmitted in the first symbol and the fifth symbol. Table 2 also applies to the PUCCH format 4 DMRS symbol position in the same way.

[94] Further, PUCCH format 4 is a DFT-S-OFDM-based long PUCCH format that can support control information of more than 2 bits. The control information may consist of a combination of HARQ-ACK, CSI and SR, or each of these. PUCCH format 4 differs from PUCCH format 3 in that PUCCH format 4 of multiple terminals can be multiplexed in one RB. It is possible to multiplex the PUCCH format 4 of a plurality of terminals by applying the pre-DFT OCC to the control information in the IFFT front end. However, the number of control information symbols that can be transmitted from one terminal is reduced according to the number of terminals to be multiplexed.

[95] Short PUCCH 518 is described below.

[96] The short PUCCH may be transmitted in both a downlink oriented time slot and an uplink oriented time slot, and is generally transmitted in the last symbol of the time slot or in an OFDM symbol (e.g., in the last OFDM symbol, in the penultimate OFDM symbol, or in the last two OFDM symbols) at the back. The short PUCCH may be transmitted at an arbitrary position in the timeslot. The short PUCCH may be transmitted using one OFDM symbol or two OFDM symbols. Fig. 5 shows that a short PUCCH is transmitted in the last symbol 518 of the timeslot. The radio resources for the short PUCCH are allocated in PRB units on the frequency side. As dedicated PRBs, one PRB or a plurality of adjacent PRBs may be allocated, or a plurality of PRBs away from the frequency band may also be allocated. The dedicated PRB must be included in the frequency band 507 supported by the terminal, or in a frequency band less than or equal to the uplink transmission bandwidth configured in the terminal by the base station. A plurality of PRBs that are allocated frequency resources may be configured in the terminal by an upper layer signal, a frequency resource is mapped to a bit field by a higher layer signal, and a bit field included in the downlink control channel may indicate to the terminal which from frequency resources is used. The uplink control information 520 and the demodulation reference signal 521 should be band-multiplexed in one PRB. As indicated at 512, a method can be provided for transmitting the demodulation reference signal to one subcarrier every two subcarriers, and the DMRS transform scheme is specified in the specification, and the terminal transmits the short PUCCH according to the transform scheme, and the base station demodulates the short PUCCH according to the transform scheme. Case 512 is an example, and the demodulation reference may be transmitted at other intervals such as 513 and 514.

[97] The short PUCCH supports transmission formats such as PUCCH format 0 and PUCCH format 2 according to the number of control information bits that can be supported. First, PUCCH format 0 is a short CP-OFDM-based PUCCH format that can support control information up to 2 bits. The control information may consist of a combination of HARQ-ACK and SR, or both. PUCCH format 0 has a structure that does not transmit DMRS, but only transmits a sequence mapped to 12 subcarriers on the frequency axis in one OFDM symbol. The terminal generates a sequence based on a group-based hopping pattern or a sequence-based hopping pattern that is configured as an upper layer signal from the base station and a configured ID, and rotates the generated sequence based on a final CS value obtained by summing other CS values with indicated by the initial CS value according to ACK or NACK, which should be mapped to 12 subcarriers so as to transmit the generated sequence. For example, if the HARQ-ACK is 1 bit as shown in the following Table 3, on ACK, a ending CS is generated by summing 6 with a start CS value, and on NACK, a ending CS is generated by adding 0 to a start CS. 0, which is the CS value for NACK, and 6, which is the CS value for ACK, are specified in the specification, and the terminal generates PUCCH format 0 according to the value at all times when a 1-bit HARQ-ACK is to be transmitted.

[98] Tab. 3

[99]

1-bit HARQ-ACK NACK ACK Final CS (initial CS+0) mod 12=initial CS (initial CS+6) mod 12

[100] If the HARQ-ACK is 2 bits as shown in Table 4 below, in the case of (NACK, NACK), 0 is added to the initial CS value, in the case of (NACK, ACK), 3 is added to the initial CS value, in the case of (ACK, ACK), 6 is added to the initial CS value, and in the case of (ACK, NACK), 9 is added to the initial CS value. 0, which is the CS value for (NACK, NACK), 3, which is the CS value for (NACK, ACK), 6, which is the CS value for (ACK, ACK), and 9, which is the CS value for (ACK, NACK) are set, and the terminal always generates PUCCH format 0 according to the value and transmits a 2-bit HARQ-ACK.

[101] If the final CS value exceeds 12 due to the CS value summed according to ACK or NACK in the initial CS value, it is obvious that the sequence length is 12, and therefore mod 12 is applied.

[102] Tab. four

[103]

2-bit HARQ-ACK NACK, NACK NACK, ACK ACK, ACK ACK, NACK Final CS (initial CS+0) mod 12=initial CS (initial CS+3) mod 12 (initial CS+6) mod 12 (initial CS+9) mod 12

[104] Further, PUCCH format 2 is a short CP-OFDM-based PUCCH format that can support control information of more than 2 bits. The control information may consist of a combination of HARQ-ACK, CSI and SR, or each of these. PUCCH format 2 indicates that, as indicated at 512, the position of the subcarrier to which the DMRS is transmitted in one OFDM symbol is fixed as subcarriers having indices #1, #4, #7, and #10 when the index of the first subcarrier is #0. The control information is mapped to the remaining subcarriers, except for the subcarriers in which the DMRS is located, by being subjected to channel coding and then subjected to a modulation process.

[105] The terminal configures the PUCCH resource sets as the upper layer signal. The terminal selects the configured PUCCH resource sets according to the number of control information bits. In a specific time interval, the terminal selects PUCCH resource set 0 when the number of control information bits to be transmitted is 1 and 2, selects PUCCH resource set 1 when the number of control information bits to be transmitted is 3 to N _2-1 selects PUCCH resource set 2 when the number of bits of control information to be transmitted is from N ₂ to N ₃ -1, and selects PUCCH resource set 3 when the number of bits of control information to be transmitted is from N ₃ to N ₄ -1. N ₂ , N ₃ and N ₄ are upper layer signals, and the terminal can receive signals from the base station in advance.

[106] Each PUCCH resource set includes X PUCCH resources, and the X PUCCH resources include resources for short PUCCHs (PUCCH format 0, PUCCH format 2) or resources for long PUCCH (PUCCH format 1, PUCCH format 3, PUCCH format 4). Which of the X resources the terminal selects, and whether or not to transmit the PUCCH format corresponding to the selected resource, may be indicated via downlink control channel bits, and may be logically inferred via transmission resources or downlink control channel slot indices, unique terminal identifier, etc. Alternatively, a method of indicating via a downlink control channel, and a method of inferring via a transmission resource or slot index of a downlink control channel, a unique terminal identifier, or the like. can be combined with the ability to be specified for the terminal. The terminal receives or logically concludes an indication scheme with the ability to select one PUCCH resource from X PUCCH resources and transmit control information via the corresponding PUCCH format.

[107] The PUCCH resource indication scheme can only be applied when the terminal can determine the PUCCH resource through an appropriate reception on the downlink control channel prior to the HARQ-ACK transmission. If the terminal does not receive a corresponding reception on the downlink control channel prior to CSI or SR, such as a CSI or SR transmission, the terminal receives in advance the PUCCH format to be used during the CSI or SR transmission and the required PUCCH resource through the upper layer signal from the base station, and in the time slot for CSI or SR transmission according to the period and offset configured by the upper layer signal from the base station, the terminal uses the configured PUCCH format in the configured PUCCH resource to transmit the CSI or SR.

[108] The PUCCH resource corresponding to the PUCCH format includes at least one of the following information.

[109] (1) PUCCH transmission start symbol, number of PUCCH transmission symbols;

[110] (2) Index indicating start PRB, number of transmission PRBs, frequency hopping configuration, second hop frequency resources when frequency hopping is indicated; and/or

[111] (3) Initial CS value, orthogonal coverage code (OCC) index on the time axis, OCC length before DFT, OCC index before DFT

[112] The required information and range of values are summarized by Table 5 according to the respective PUCCH formats. If the values are not required to be specified in the following table 5 or equal to 1, and therefore a range of values is not required, the values are marked with "Not available".

[113] Tab. 5

[114]

PUCCH-format0 PUCCH format1 PUCCH format2 PUCCH format3 PUCCH format4 Start character Configurability v v v v v Value range 0-13 0-10 0-13 0-10 0-10 Number of characters in timeslot Configurability v v v v v Value range 12 4-14 12 4-14 4-14 Index to identify the start PRB Configurability v v v v v Value range 0-274 0-274 0-274 0-274 0-274 Number of PRBs Configurability No data No data v v No data Value range No data (default 1) No data (default 1) 0-16 1-6, 8-10, 12, 15, 16 No data (default 1) FH activation Configurability v v v v v Value range On/Off (only for 2 characters) On Off On/Off (only for 2 characters) On Off On Off 2nd hop frequency resource if FH is enabled Configurability v v v v v Value range 0-274 0-274 0-274 0-274 0-274 Initial cyclic shift index Configurability v v No data No data No data Value range 0-11 0-11 No data 0-11 0-11 Time domain OCC index Configurability No data v No data No data No data Value range No data 0-6 No data No data No data Length of OCC to DFT Configurability No data No data No data No data v Value range No data No data No data No data 2, 4 OCC index before DFT Configurability No data No data No data No data v Value range No data No data No data No data 0, 1, 2, 3

[115] Hereinafter, for a short PUCCH, it refers to PUCCH Format 0 or PUCCH Format 2, if not specified, and for a long PUCCH, it refers to PUCCH Format 1, PUCCH Format 3, or PUCCH Format 4 , unless specifically stated. In addition, transmission by PUCCH format X means transmission by PUCCH resource for PUCCH format X obtained by an entity discovery method such as an indicator, inference, or the like from a base station unless specifically indicated.

[116] It can be determined whether one terminal transmits uplink control information using a long PUCCH or transmits uplink control information using a short PUCCH in a time slot or mini-slot based on the use information of the long PUCCH or short PUCCH included in the signal. upper layer by receiving the upper layer signal from the base station. Alternatively, it may be determined whether one terminal transmits uplink control information using the long PUCCH or transmits uplink control information using the short PUCCH in a time slot or mini-slot based on the use information of the long PUCCH or short PUCCH included in the physical signal. , by receiving the physical signal from the base station. It may be implicitly determined whether one terminal transmits uplink control information using a long PUCCH or transmits uplink control information using a short PUCCH in a timeslot or mini-slot based on the number of uplink symbols in a timeslot or mini-slot. -interval. For example, when the number of uplink symbols in a time slot or mini-slot indicated or configured from the base station is 1 or 2 to transmit uplink control information, the uplink control information may be transmitted using a short PUCCH, and when the number of uplink symbols in a timeslot or mini-slot is 4-14, the uplink control information may be transmitted using a long PUCCH.

[117] It may be determined whether one terminal transmits uplink control information using a long PUCCH or transmits uplink control information using a short PUCCH in a time slot or mini-slot, in combination with information indicating the shape of the msg3 signal included in msg2, while the terminal is performing random access. That is, when information indicating the waveform of msg3 included in msg2 is CP-OFDM, the terminal transmits uplink control information via the short PUCCH using the CP-OFDM waveform. When the information indicating the waveform of msg3 included in msg2 is DFT-S-OFDM, the terminal transmits uplink control information via the long PUCCH using the DFT-S-OFDM waveform.

[118] This describes how the long PUCCH and short PUCCH described above are multiplexed. In one time slot 530, the long PUCCH and the short PUCCH of different terminals may be multiplexed in the frequency domain (500). The base station may be configured such that the frequency resources of the short PUCCH and the long PUCCH of different terminals do not need to overlap, as indicated by the PRB of FIG. 5. However, configuring the transmission resources of the uplink control channels of all terminals differently regardless of scheduling constitutes a loss of frequency, and frequency resources should not be limited in view of the limited frequency resources to be used for transmission on the uplink data channel. links, not for transmission on the uplink control channel. Therefore, the frequency resources of the short PUCCH and the long PUCCH of different terminals may overlap, and the base station must operate such that scheduling and transmission resources of different terminals do not collide with each other in the same time slot.

[119] When the collision of the short PUCCH transmission resource and the long PUCCH transmission resource of different terminals in a specific time interval cannot be avoided, the base station needs a scheme to prevent the collision of the long PUCCH transmission resources with the short PUCCH transmission resource, and the terminal must adapt the transmission resource of the long PUCCH according to the indicator of the base station. Due to the scheme, the transmission resources of the short PUCCH and the long PUCCH can be multiplexed in the time domain in the same time slot 531.

[120] As described above, when the terminal is configured to divide the downlink and uplink bandwidths into one or more bandwidth portions, respectively, configuration methods are required, such as a method for configuring, by the terminal, an uplink control channel resource with considering a portion of the bandwidth, a method for selecting an uplink control channel resource, and a method for changing the portion of the bandwidth.

[121] First Embodiment

[122] FIG. 6 is a partial configuration diagram of 5G bandwidth and uplink control channel resource configuration according to an embodiment. In FIG. 6, the uplink system bandwidth 610 is shown on the frequency axis, and 1 slot 620 is shown on the time axis. In FIG. 6, one slot is assumed to be 7 OFDM symbols, but it can also be applied to the case where one slot is supposed to be 14 symbols. In FIG. 6, the uplink system bandwidth 610 may include a plurality of uplink bandwidth parts (e.g., four bandwidth parts as bandwidth part #1 602, bandwidth part #2 603, bandwidth part #3 604, and part #4 605 bandwidth). A bandwidth part can also be configured, including at least one bandwidth part, such as bandwidth part #5 (606). In addition, the terminal may activate and use only one or multiple portions of the bandwidth at a particular time (symbol or slot, subframe or frame). Partial bandwidth activation and deactivation may be performed via at least one of an upper layer signal, DCI information transmitted via a downlink control channel, MAC CE, partial bandwidth activation and deactivation timer.

[123] All transmission resources on the uplink control channel may be configured in a portion of the bandwidth, or transmission resources on the uplink control channel may be configured in only one or a portion for a portion of the bandwidth. The transmission resource on the uplink control channel described above may be configured in each terminal through UE-specific signaling, UE-group common signaling, RRC signaling, and the like. Configuring an uplink control channel transmission resource in a terminal means providing information such as the location of the control channel transmission area, subband, allocation of control channel resources, and length of the control channel. For example, the uplink control channel transmission resource set may include the following information.

[124] Tab. 6

[125]

- Configuration information 1. RB allocation information on the frequency axis of the uplink control channel; - Configuration information 2. Allocation information (location of the start symbol of the control channel) on the time axis of the uplink control channel; - Configuration information 3. Time axis length (number of control channel OFDM symbols) of the uplink control channel or format; - Configuration information 4. Waveform (OFDM or DFT-S-OFDM) of the uplink channel;
- Configuration information 5. Uplink control channel frequency hopping mode

[126] As shown in FIG. 6A, a terminal allocated one or more bandwidth portions may be allocated one or more uplink control channel transmission resources 640 in one of the configured bandwidth portions. The terminal may be configured with one or more uplink control channel transmission resources 650, 660, 670, and 680 in all portions of the bandwidth, configured as shown in FIG. 6b. The terminal may receive transmission resources on the uplink control channel only in some configured portions of the bandwidth. The transmission resource configuration on the uplink control channel may be independent for each part of the bandwidth. The base station may configure the transmission resource on the uplink control channel based on the maximum bandwidth of the uplink frequencies that can be supported by the terminal, without regard to the bandwidth portion at the time of configuring the transmission resource on the uplink control channel. The base station may configure uplink control channel transmission resources 650 and 680 based on the maximum uplink bandwidth 610 of the terminal. Considering the transmission resource on the uplink control channel and the uplink bandwidth portion configured from the base station, the terminal determines that the long uplink control PUCCH channel 650 and the short uplink control PUCCH channel 680 are configured in part #1 602 bandwidth and part #4 605 bandwidth, and a separate uplink control channel is not configured in part #2 603 bandwidth and part #3 604 bandwidth.

[127] In addition, it is assumed that the uplink control channel is not configured in each part of the bandwidth, or one uplink control channel is configured. However, it is also possible when one or more uplink control channels are configured in the bandwidth part. At least one of the configuration information associated with the uplink control channel as shown in Table 6 may be set in advance between the base station and the terminal, may be configured by the terminal from the base station via an upper layer signal, or may be configured based on system information (eg, a signal carried in the SI-RNTI). The base station can transmit the upper layer signal by including configuration information in the transmitted upper layer signal so as to configure a portion of the uplink bandwidth at the terminal. If the maximum uplink bandwidth that can be supported by the terminal or the plurality of uplink control channel transmission resources is configured in at least one part of the bandwidth, the base station may select one of the plurality of control channel transmission resources (channel configuration index uplink control channel format or uplink control channel format) and can transmit the selected transmission resource information on the control channel to the terminal via the downlink control channel. In other words, the terminal may receive the DCI transmitted via the downlink control channel to receive the downlink data channel according to the DCI, and may output the result of receiving the downlink data received via the downlink data channel and report or transmit to the base station using the transmission resource on the control channel indicated by the DCI.

[128] When a terminal requires uplink signaling via an uplink control channel, the terminal may activate a portion of the bandwidth (eg, at least one (part #1 602 bandwidth) of the deactivated portions of the bandwidth when there is no control channel resource uplink configured in bandwidth part #2 603) to transmit an uplink control channel. If the terminal can only activate one uplink bandwidth part, it may be determined that the bandwidth part (band part #2 603) that is currently being activated but does not have an uplink control channel resource configured in the bandwidth part bandwidth is deactivated, and only a portion of the bandwidth (band portion #1 602) activated to allow the terminal to transmit an uplink control channel is activated. After transmitting the uplink control channel, the terminal may activate bandwidth portion #2 603 and deactivate bandwidth portion #1 602 again. In a symbol or time slot that activates bandwidth portion #1 602 for transmission on the uplink control channel when uplink signaling (eg, SRS) is configured in bandwidth portion #2 603 or another bandwidth portion ( eg, in bandwidth portion #3 604), all uplink signaling may not be performed in other bandwidth portions other than bandwidth portion #1 602 activated for uplink control channel transmission. When the time when the terminal transmits the uplink control channel in bandwidth part #1 602 and the time (eg, symbols) between uplink signalings configured in bandwidth part #3 604 do not overlap, or when the uplink control channel is transmitted in bandwidth portion #1 602 and then changed to bandwidth portion #3 604 to transmit the configured uplink signal. In other words, when the uplink control channel is transmitted in bandwidth portion #1 602, and then the uplink signaling of bandwidth portion #3 604 is performed at a time (symbol or slot) after time X, the terminal may transmit the control channel uplink in bandwidth part #1 602 and then activate bandwidth part #3 604 to transmit the uplink signal configured in bandwidth part #3 604 .

[129] The following describes a case where a terminal needs to transmit an uplink signal via an uplink control channel when an uplink control channel resource is configured in a plurality of bandwidth portions of the bandwidth portions in which there is no uplink control channel resource , which is configured in the currently activated part of the bandwidth, but which are deactivated, either when a plurality of parts of the bandwidth is activated, or an uplink control channel resource is configured in the full part of the bandwidth, activated all the time, or in the plurality of parts of the bandwidth. The terminal may transmit the uplink control channel through the uplink control channel resource configured in the predetermined or configured portion of the bandwidth, transmit the uplink control channel through the uplink control channel resource configured in the portion of the bandwidth having the lowest the bandwidth index of the activated bandwidth portions in which the uplink control channel resource is configured, transmit the uplink control channel through the uplink control channel resource configured in the uplink bandwidth portion associated with the downlink bandwidth portion , receiving the downlink data channel, from the activated portions of the bandwidth in which the uplink control channel resource is configured, to transmit the uplink control channel communication channel through the uplink control channel or the uplink data channel configured in the uplink bandwidth portion configured for uplink signaling other than the uplink control channel, to transmit the uplink control channel through the uplink control channel configured in the last activated uplink bandwidth part, or transmit the uplink control channel through the uplink control channel configured in the uplink bandwidth part in which the resource for the SR is configured to be be performed by the terminal when the scheduling request information is included in transmission on the uplink control channel.

[130] Second Embodiment

[131] Hereinafter, this document describes in detail a method for performing bandwidth control in a 5G communication system, which is currently being discussed.

[132] FIG. 7 is a diagram of a transmission/reception bandwidth adaptation operation according to an embodiment. The power consumption of the terminal can be effectively controlled through bandwidth control. In FIG. 7, the abscissa represents the time domain and the ordinate represents the frequency domain. In describing the downlink bandwidth adaptation operation of FIG. 7, the terminal is shown to receive a downlink control channel and a downlink data channel corresponding to "bandwidth A 701" from the base station in time slot #1 706. Bandwidth A may be a predetermined reference bandwidth , the bandwidth determined during the initial connection of the terminal, or the bandwidth or portion of the bandwidth determined through the configuration between the terminal and the base station.

[133] If the base station instructs the terminal to change the bandwidth of the terminal to "band B 705" through the "bandwidth adaptation command 702" in time slot #2 707, the terminal receives the command and then performs the bandwidth change operation. The "bandwidth A" and "bandwidth B" may have different sizes, and the "bandwidth A" may be larger or smaller than the "bandwidth B". In FIG. 7, it is assumed that "bandwidth B" is larger than "bandwidth A". "Bandwidth A" and "bandwidth B" may be expressed in units of PRB or in units of a fraction of the bandwidth. The terminal takes a predetermined time to successfully receive the bandwidth adaptation command and obtain the received bandwidth adaptation command by decoding, and it takes a predetermined time to change the configuration of the terminal's RF module at the time of bandwidth change. In FIG. 7, it is illustrated that a maximum "bandwidth change time X 703" is required until the terminal completes the bandwidth change by receiving a "bandwidth adaptation command". In FIG. 7, it is illustrated that the "bandwidth adaptation command 702" is transmitted to the terminal by being included in the downlink control channel 717. A scenario is shown where reception of downlink signals or transmission of uplink signals of the terminal does not occur for a period of time with reference number 703.

[134] The terminal completes the bandwidth change to "band B" within "band change time X" and operates in "band B" from slot period #3 708. Therefore, the base station can transmit a signal corresponding to "band B bandwidth" to the terminal from time slot period #3 708. The base station indicates, to the terminal, that the downlink control channel and the downlink data channel corresponding to the "B bandwidth" in time slot #3 708 and time slot #4 709 are being transmitted.

[135] "Bandwidth adaptation command 702" may be represented by a minimum of 1 bit and a maximum of N bits (N>1).

[136] In the first configuration method of "bandwidth adaptation commands" (1 bit), when the bandwidth that can be adapted by the terminal is two bandwidths "bandwidth A" and "bandband B", it can represent the bandwidth , to be applied by the terminal, as 1 bit. For example, if the 1-bit information is "0", it means "bandwidth A", and if the 1-bit information is "T", it means "bandwidth B".

[137] In the second configuration method of "bandwidth adaptation commands" (N bits), it is possible to represent 2N adjustable terminal bandwidths by N bits, respectively. For example, for 2 bits, "00" means "bandwidth A", "01" means "bandwidth B", "10" means "bandwidth C", and "11" means "bandwidth D".

[138] The base station may transmit "bandwidth adaptation command 702" to the terminal through at least one of physical layer signaling, MAC signaling, and RRC signaling. Of these, the physical layer signaling method is characterized in that the terminal can be quickly processed. The base station may signal separately (or UE-specific) a "bandwidth adaptation command" to each terminal, or may perform common signaling (common per UE group or common signaling) to multiple terminals in a cell.

[139] When the downlink and uplink signals are transmitted and received in the same frequency band, similar to a TDD system, or when the downlink bandwidth part and the uplink bandwidth part operate in combination or in association with each other (e.g. , when the uplink bandwidth also changes from bandwidth A to bandwidth B, or is activated at the time of change or activation from downlink bandwidth A to bandwidth B), the uplink bandwidth of FIG. 7 may change according to the downlink bandwidth change. In other words, when the terminal adapts or changes from downlink bandwidth A 701 to downlink bandwidth B 705 via the bandwidth adaptation command 702 from the base station, the uplink of the terminal may adapt or change from bandwidth A 751 to bandwidth B 755 uplink pass.

[140] If the uplink control channel transmission resources are configured in each uplink bandwidth configured in the terminal (for example, if the uplink control channel transmission resources 760 and 770 are configured in bandwidth A 751 and bandwidth B 755 ), a terminal receiving the DCI transmitted from the base station via the downlink control channel 719 in time slot #1 706 may receive the downlink data via the downlink data channel 720 indicated by the DCI, and report the reception result as HARQ-ACK for downlink data to the base station via the uplink control channel resource indicated by the DCI at a time (eg, time slot #3 708) indicated by the DCI. The terminal determines that the uplink control channel resource indicated by the DCI is the uplink control channel resource 760 of the uplink bandwidth A 751 that is activated in the bandwidth at the time to receive the DCI. Thus, at the time (time slot #1 706) when DCI is to be received in the case of FIG. 7, the base station can correctly receive the reception result of the downlink data 720 that the terminal reports when the terminal is supposed to transmit the reception result via the uplink control channel resource 770 of the uplink bandwidth B 755 because the bandwidth at the time (temporal interval #3 708) when the result of receiving the downlink data 720 that the terminal transmits to the base station via the uplink control channel is to be transmitted is bandwidth B 755 . Accordingly, a method is required for correctly determining the timing of an uplink bandwidth change or a transmission resource on an uplink control channel when the uplink bandwidth changes according to the downlink bandwidth change in a terminal and a base station configured to change the bands. downlink and uplink bandwidth.

[141] The first method includes determining an uplink control channel transmission resource based on an uplink bandwidth activated before time K from an uplink control channel transmission start time or an uplink control channel transmission start time connections.

[142] The second method includes changing the uplink bandwidth at a time (symbol or timeslot) when a result of receiving downlink data received over the changed downlink bandwidth according to receiving the bandwidth adaptation command is to be transmitted.

[143] Hereinafter, the first method is described in more detail as follows. When the downlink and uplink signals are transmitted and received in the same frequency band (or the center frequencies of the downlink and uplink frequency bands are identical), similar to the TDD system of FIG. 7, or when the downlink bandwidth part and the uplink bandwidth part operate in combination or in association with each other (for example, when the uplink bandwidth also changes from bandwidth A to bandwidth B, or is activated during change or activation from downlink bandwidth A to bandwidth B), the uplink bandwidth of FIG. 7 may change according to the downlink bandwidth change. In other words, when the terminal adapts or changes from downlink bandwidth A 701 to downlink bandwidth B 705 via the bandwidth adaptation command 702 from the base station, the terminal's uplink may adapt or change from bandwidth A 751 to bandwidth B 755 uplink bandwidth, and the time (symbol or timeslot) when the uplink bandwidth should be changed may be the same as the time when the downlink bandwidth should be changed. The time (symbol or time slot) of the uplink bandwidth change may be after time X from the time when the downlink bandwidth should be changed, where X may be less than or equal to the symbol length or slot length, and time X may be set by the characteristics of the terminal, or be set in advance between the base station and the terminal. Additionally, the time X may be set by the terminal from the base station via an upper layer signal, or may be set from system information (eg, a signal transmitted in the SI-RNTI). The base station can transmit the upper layer signal by including the value of X in the transmitted upper layer signal so as to configure a portion of the uplink bandwidth at the terminal.

[144] If transmission resources on the uplink control channel are configured in each uplink bandwidth configured in the terminal, as shown in FIG. 7 (if uplink control channel transmission resources 760 and 770 are configured in bandwidth A 751 and bandwidth B 755), a terminal receiving the DCI transmitted from the base station via the downlink control channel 719 in time slot #1 706, may receive the downlink data via the downlink data channel 720 indicated in the DCI, and report the reception result as a HARQ-ACK for the downlink data to the base station via the uplink control channel resource indicated in the DCI at the time (eg, timeslot #3 708) specified in the DCI. Through the first method, the terminal determines that the reception result is transmitted over a bandwidth that is activated at the time (time slot #3 708) when the reception result of downlink data 720 indicated by DCI 719 is to be transmitted. Uplink control channel 770 bandwidth B 755 so that the base station can correctly receive the result of receiving downlink data 720 reported by the terminal.

[145] The terminal may be allocated uplink control channel resources regardless of uplink bandwidth A and bandwidth B. Fig. 9 is a diagram of a terminal according to an embodiment. For example, as shown in FIG. 9, a terminal having an uplink bandwidth 900 configured as bandwidth A 902 and bandwidth B 903 can be allocated uplink control channel resources in bandwidth A 902 and bandwidth B 903, respectively. Uplink control channel #1 910 and uplink control channel #2 920 may be configured in band A 902, and uplink control channel #1 930 and uplink control channel #2 940 may be configured in band B 903 passes. All given formats or lengths of each uplink control channel, frequency resource location, and the like. can be independently specified, and each specified value of resources, formats, lengths, etc. an uplink control channel configured in bandwidth A 902 and bandwidth B 903, respectively, may also be independent.

[146] Therefore, similarly to the first method, when the terminal determines that the reception result is transmitted through the uplink control channel 770 of the bandwidth that is activated at the time (time slot #3 708) when the downlink data reception result 720 is to be transmitted indicated by the DCI 719 (eg, bandwidth B 755), it may be determined that the transmission time and resource on the uplink control channel (uplink control channel configuration index or uplink control channel format) indicated by the DCI 719 , represent the transmission time and resource on the uplink control channel (uplink control channel configuration index or uplink control channel format) of the bandwidth that is activated at the time (time slot #3 708) when the data reception result should be transmitted 720 downlink, specify th by DCI 719 rather than a bandwidth that is activated at the time (time slot #1 706) when DCI 719 should be received.

[147] In other words, the terminal determines that the transmission time and resource on the uplink control channel (uplink control channel configuration index or uplink control channel format, eg, PUCCH #1) indicated by DCI 719 represent is the transmission time and resource on the uplink control channel (uplink control channel configuration index or uplink control channel format) of the bandwidth that is activated at the time (time slot #3 708) when the downlink data reception result 720 should be transmitted links indicated by DCI 719 (eg, PUCCH #1 930) and transmits the result of receiving downlink data 720 using PUCCH #1 930.

[148] If an uplink control channel transmission resource (uplink control channel configuration index or uplink control channel format) configured according to a portion of the bandwidth is configured differently and is not converted on a one-to-one basis (for example, when three uplink control channel resources are configured in the bandwidth part A, and two uplink control channel resources are configured in the bandwidth part B), the terminal can determine the transmission time and resource of the uplink control channel (index an uplink control channel configuration or an uplink control channel format such as PUCCH #1) on a modulo basis. When three uplink control channel resources are configured in the bandwidth part A and two uplink control channel resources are configured in the bandwidth part B, and when the terminal with the bandwidth part A is activated, when the bandwidth that is activated at the time (temporal interval #3 708) for transmitting the reception result of the downlink data 720 indicated by the DCI 719 is part B of the bandwidth, time and transmission resource on the uplink control channel (uplink control channel configuration index or uplink control channel format which the terminal uses for transmission on the uplink control channel may determine an uplink control channel resource (uplink control channel configuration index or uplink control channel format) indicated by DCI 719 based on the value obtained by performing a modulo operation on the number of uplink control channel resources (uplink control channel configuration index or uplink control channel format) configured in the changed bandwidth part B. When three uplink control channel resources (PUCCH #1, PUCCH #2 and PUCCH #3) are configured in the bandwidth part A and two uplink control channel resources (PUCCH #1, PUCCH #2) are configured in the bandwidth part B bandwidth, if the DCI 719 indicates transmission on the uplink control channel through the resource of the uplink control channel #3 (PUCCH #3), the terminal may transmit the uplink control channel based on the result obtained by performing a modulo operation with the number of indicated resources control channels and the number of control channel resources (uplink control channel configuration index or uplink control channel format) configured in the changed bandwidth part B (eg, PUCCH #3 mod 2=PUCCH #1), i.e. with PUCCH #1 configured in bandwidth part B.

[149] Hereinafter, the second method is described in more detail as follows. Fig. 8 is a diagram of a system according to an embodiment. When the downlink and uplink signals are transmitted and received in the same frequency band (or the center frequencies of the downlink and uplink frequency bands are identical), similar to the TDD system of FIG. 8, or when the downlink bandwidth part and the uplink bandwidth part operate in combination or in association with each other (for example, when the uplink bandwidth also changes from bandwidth A to bandwidth B, or is activated during change or activation from downlink bandwidth A to bandwidth B), the uplink bandwidth of FIG. 8 may change according to the downlink bandwidth change.

[150] In other words, when the terminal adapts or changes from the downlink bandwidth A 801 to the downlink bandwidth B 805 via the bandwidth adaptation command 802 from the base station, the terminal's uplink may also adapt or change from the bandwidth A 851 per uplink bandwidth B 855, and it can be assumed that the time point (symbol or time interval) when the uplink bandwidth should be changed may be the same as the time point when the downlink bandwidth should be changed, similar to the method 1. If it is assumed that the time point when the uplink bandwidth is to be changed is the same as the time point when the downlink bandwidth is to be changed, similar to the first method described with reference to FIG. 7, the terminal determines that the uplink control channel transmission time and resource is the uplink control channel transmission time and resource (uplink control channel configuration index or uplink control channel format) of the bandwidth that is activated. at the time (time slot #3 708) when the result of receiving downlink data 720 indicated by the DCI 719 should be transmitted rather than the bandwidth that is activated at the time (time slot #1 706) when the DCI 719 should be received, so that the processing time of the terminal may be insufficient between the time at which the transmission resource on the uplink control channel should be determined and the time at which the transmission on the uplink control channel is performed.

[151] Therefore, in the second method, the uplink bandwidth is changed at the time (symbol or timeslot) when the result of receiving downlink data received over the changed downlink bandwidth according to receiving the bandwidth adaptation command is to be transmitted, thus that the terminal can determine the uplink control channel that the terminal should transmit based on the bandwidth that is activated at the time (time slot #1 706) when DCI 719 should be received.

[152] In other words, when uplink control channel transmission resources are configured in each uplink bandwidth configured in the terminal, as shown in FIG. 8 (for example, when the uplink control channel transmission resources 860 and 880 are configured in bandwidth A 851 and bandwidth B 855 as shown in FIG. 8), a terminal receiving a DCI transmitted from a base station via a downlink control channel 819 link in time slot #1 806 may receive the downlink data via the downlink data channel 820 indicated in the DCI, and report the reception result as a HARQ-ACK for the downlink data to the base station via the uplink control channel resource. of the uplink control channel resources (uplink control channel configuration index or uplink control channel format) of the uplink bandwidth A 851 activated at time (e.g., timeslot #1 806 ) when to take DCI.

[153] When describing the second method in another diagram, when the terminal adapts or changes from the downlink bandwidth A 801 to the downlink bandwidth B 805 via the bandwidth adaptation command 802 from the base station, the uplink of the terminal can also adapt or change from bandwidth A 851 to bandwidth B 855 uplink, and it can be determined that the time (symbol or time interval) when the uplink bandwidth should be changed is the time after time K( symbol or timeslot) elapses from the point in time when the downlink bandwidth should be changed. K may be greater than or equal to a symbol length or a slot length, and K may be determined by terminal characteristics or may be predetermined between the base station and the terminal. Additionally, K may be set by the terminal from the base station via an upper layer signal, or may be set from system information (eg, a signal transmitted in the SI-RNTI). The base station can transmit the upper layer signal by including the value of K in the transmitted upper layer signal so as to configure a portion of the uplink bandwidth at the terminal. The value of K may be transmitted to the terminal by being included in the signal to transmit the bandwidth adaptation command.

[154] As another scheme, when a terminal adapts or changes from downlink bandwidth A 801 to downlink bandwidth B 805 via bandwidth adaptation command 802 from the base station, the uplink bandwidth of the terminal may also adapt or change from bandwidth A 851 to bandwidth B 855 uplink, and it can be determined that the uplink bandwidth is changed to bandwidth B 855 just before the result of receiving downlink data transmitted over the changed bandwidth B 805 downlink is reported or transmitted to the base station via the uplink control channel, or at a time before time X from the time (symbol or slot) when the uplink bandwidth should be changed. The uplink control channel transmitted before the uplink bandwidth change B 855 is an uplink control channel determined based on the uplink bandwidth A 851 .

[155] As another scheme, when the terminal adapts or changes from the downlink bandwidth A 801 to the downlink bandwidth B 805 via the bandwidth adaptation command 802 from the base station, the uplink bandwidth of the terminal can also be adapted or changed. from bandwidth A 851 to bandwidth B 855 uplink, and it can be determined that the uplink bandwidth is changed to bandwidth B 855 just before the result of receiving downlink data transmitted over the changed bandwidth B 805 downlink is first reported or transmitted to the base station via the uplink control channel, or at a time before time X from the time (symbol or slot) when the uplink bandwidth should be changed. X may be less than or equal to a symbol length or a time interval length, and the time X may be determined by the characteristics of the terminal, or may be predetermined between the base station and the terminal. Additionally, the time X may be set by the terminal from the base station via an upper layer signal, or may be set from system information (eg, a signal transmitted in the SI-RNTI). The base station can transmit the upper layer signal by including the value of X in the transmitted upper layer signal so as to configure a portion of the uplink bandwidth at the terminal. The uplink control channel transmitted before the uplink bandwidth change B 855 is an uplink control channel determined based on the uplink bandwidth A 851 .

[156] Based on the uplink bandwidth change time determined by the second method, the terminal may determine that an uplink control channel that is configured or indicated to be transmitted at the next time including the bandwidth change time , is an uplink control channel resource 880 (uplink control channel configuration index or uplink control channel format) determined based on the changed bandwidth B 855, and determine that the uplink control channel transmitted before the change uplink bandwidth B 855 is an uplink control channel 860 determined based on uplink bandwidth A 851 .

[157] Third Embodiment

[158] The terminal may receive, as an upper layer signal, system information (MIB, SIB), downlink control information (DCI), configuration information (e.g., at least one information from the uplink control channel format, transmission start symbol , the number of transmission symbols including the transmission start symbol, the transmission start RB, the number of transmission RBs including the transmission start RB, the sequences, the initial cyclic shift value to be applied to the sequence, the frequency hopping on/off information, the assignment information time-frequency resources of the second hop when frequency hopping is enabled, orthogonal sequence information, etc.) relative to the uplink control channel transmitting scheduling request information (e.g., SR information, reception result (HARQ-ACK) of the transmission channel downlink data, CSI, etc. .) to the base station, determine at least one or a combination of the above from the received information, and determine the uplink control channel format and transmission configuration information for the format that can be used during transmission of uplink control information via the uplink control channel.

[159] FIG. 14 is a diagram of an uplink control channel transmission in an uplink bandwidth part, according to an embodiment. Fig. 14 illustrates an uplink control channel transmission in the uplink bandwidth portion 1402 configured and determined in the first to second embodiments in time slot n of the uplink system bandwidths 1400 configured in the terminal. The terminal may receive configuration information on the uplink control channel in advance to transmit scheduling request information via an upper layer signal from the base station. A terminal may be assigned a plurality of uplink control channels to identify scheduling request information for data, a logical channel, or a group of logical channels for transmission on the uplink. For example, in FIG. 14, PUCCH #1 1410 is an uplink control channel configured to transmit scheduling request information for a first logical channel, and PUCCH #2 1420 is an uplink control channel configured to transmit scheduling request information for a second logical channel. logical channel.

[160] When the terminal requests transmission of uplink data for the first logical channel, the terminal transmits scheduling request information to the base station via PUCCH #1 1410 so that the base station can configure or allocate transmission resources on the uplink data channel appropriate for the logical channel (first logical channel) to be transmitted by the terminal. In addition, the terminal may be assigned PUCCH #3 1430, which is an uplink control channel for reporting to the base station the reception result of the downlink data channel received in timeslot n or the previous timeslot from the base station. The configuration information for the uplink control channels for transmitting the uplink control information may be independently configured. In other words, the transmission format on the uplink control channel for PUCCH #1 1410, PUCCH #2 1420 and PUCCH #3 1430 can be configured independently. Therefore, the uplink control channel transmission formats for PUCCH #1 1410, PUCCH #2 1420, and PUCCH #3 1430 may be configured differently. The uplink control channel transmission length or transmission interval length for PUCCH #1 1410, PUCCH #2 1420 and PUCCH #3 1430 can be configured independently. Therefore, the uplink control channel transmission length or transmission interval length for PUCCH #1 1410, PUCCH #2 1420, and PUCCH #3 1430 may be configured differently.

[161] The terminal may be assigned a plurality of configurations for the uplink control channel via the upper layer signal from the base station so as to report the reception result of the downlink data channel received from time slot n or the previous time slot to the base station in time interval n. The downlink control information for scheduling the downlink data channel may include an indicator indicating whether or not to report the reception result of the downlink data channel using any uplink control channel configuration from the channel configuration information set. uplink control channel configured in the terminal, and the terminal may report the reception result according to the configuration of the uplink control channel 1430 indicated by the indicator.

[162] Therefore, in a scenario in which the terminal reports the reception result of the downlink data channel received from the base station in time slot n or the previous time slot to the base station in time slot n, when the terminal is to transmit scheduling request information in time slot n (in other words, when a plurality of uplink control information different from each other is transmitted in time slot n, or a plurality of other uplink control information is transmitted simultaneously), the terminal may transmit two uplink control channels, respectively to transmit uplink control information, or use only one of the two uplink control channels to transmit one or a plurality of uplink control information. Generally, since the available power that can be used for signaling the terminal is limited, it is preferable to transmit the uplink control information using only one of the two uplink control channels. The terminal may transmit a downlink data channel reception result using PUCCH #1 1410, which is an uplink control channel for transmitting scheduling request information.

[163] Since the base station knows that the terminal should transmit the reception result of the downlink data channel via the uplink control channel PUCCH #3 1430 in time slot n if the base station receives the reception result of the downlink data channel in the channel The uplink control PUCCH #1 1410 configured to transmit scheduling request information to the terminal, the base station can determine that the downlink data channel reception result and the scheduling request information for the logical channel corresponding to the PUCCH #1 are transmitted. 1410 uplink control. If the terminal transmits scheduling request information for a logical channel corresponding to the uplink control PUCCH #2 1420 in time slot n, the terminal may transmit a downlink data channel reception result via the uplink control PUCCH #2 1420. The base station that receives the reception result of the downlink data channel in the uplink control channel PUCCH #2 1420, configured to transmit scheduling request information to the terminal, can determine that the reception result of the downlink data channel is transmitted, and scheduling request information for the logical channel corresponding to the uplink control PUCCH #2 (1420).

[164] Each uplink control channel format corresponding to each uplink control information is different, or the uplink control channel format is identical, but the length (or number of symbols on the time axis configuring the uplink control channel) of the control channel uplink is different, or the uplink control channel format is identical, but at least one of the transmission sequence, the orthogonal sequence, and the cyclic shift value may be different. For convenience of description, the third embodiment is to describe a case in which the length of the uplink control channel corresponding to the uplink control information is different. However, as described above, the method described in the disclosure can be applied even to the case in which at least one of the various configuration elements configuring an uplink control channel, including an uplink control channel format, sequence the uplink control channel and the orthogonal sequence of the uplink control channel is different.

[165] PUCCH #1 1410 is an uplink control channel for transmitting scheduling request information for the first logical channel in time slot n, PUCCH #2 1420 is an uplink control channel transmitting scheduling request information for the second logical channel in time slot n, PUCCH #3 1430 is an uplink control channel for reporting the reception result of a downlink data channel in time slot n, and PUCCH #3 1430 is an uplink control channel configured to provide baseline the station to report the reception result to the terminal via the downlink control signal information scheduling the downlink data channel. If the terminal simultaneously transmits scheduling request information for the first logical channel and a downlink data channel reception result in time slot n, the terminal transmits the downlink data channel reception result via PUCCH #1 1410 to transmit as request information on scheduling and the result of receiving the first logical channel at the base station. However, the configuration information PUCCH #3 1430 is instructed by the base station to be used for the terminal. The length of PUCCH #3 1430 is different from the length of PUCCH #1 1410. Both PUCCH #3 1430 and PUCCH #1 1410 are assumed to be PUCCH format 1.

[166] When different uplink control information is simultaneously transmitted as described above, or when each transmission resource on the uplink control channel corresponding to different uplink control information overlaps in time for at least one symbol, the terminal may transmit the uplink control information on one of the uplink control channels corresponding to the uplink control information to be transmitted. When the terminal simultaneously transmits the scheduling request information for the first logical channel and the reception result of the downlink data channel in time slot n, or when the uplink control PUCCH #1 to transmit the scheduling request information for the first logical channel and the PUCCH # 3. The uplink control for transmitting the reception result of the downlink data channel overlap in time for at least one symbol, the terminal may transmit the reception result of the downlink data channel via PUCCH #1 1410 and transmit as scheduling request information ( hereinafter, SRI) for the first logical channel, and the result of reception (hereinafter, HARQ-ACK) at the base station.

[167] When the PUCCH length (or number of PUCCH symbols, N_PUCCH_symb) configured for PUCCH #1 1410 and PUCCH #3 1430 differ from each other, the terminal may use the PUCCH #1 configuration information to generate reception result information for a downlink data channel, and transmit the generated reception result information via time and frequency resources configured for PUCCH #1 1410.

[168] The following describes in detail a first scheme for generating a HARQ-ACK signal to be transmitted with a PUCCH resource set value identical to the PUCCH resource set value in the case of transmitting only SRI in PUCCH #1 1410.

[169] In the first scheme, except for the bit information (for example, when only SR is transmitted, the bit information transmitted from PUCCH #1 1410 is d(0)=1) transmitted from PUCCH #1 1410, the terminal may use the configuration information configured for PUCCH #1 1410 to generate a signal for HARQ-ACK information, and transmit the generated HARQ-ACK information through the time and frequency resources configured in PUCCH #1 1410. The terminal may encode the result of receiving the received data downlink and bit HARQ-ACK information using a BPSK or QPSK scheme or the like to generate d(0) information to be transmitted, multiply a specific sequence (eg, a Zadoff-Chu sequence) by a signal, and encode it with spread spectrum by using the value w_i(m) of the orthogonal sequence, thereby generating a signal to be transmitted via PUCCH #1 1410. In other words ovy, except for the information d(0), the terminal may generate a HARQ-ACK signal to be transmitted with a PUCCH resource set value identical to the PUCCH resource set value when transmitting only SRI in PUCCH #1 1410, and transmit the generated HARQ- ACK signal in signal and frequency resource allocated to PUCCH #1 1410. PUCCH resource configuration information for PUCCH #1 1410 is a PUCCH resource configured for PUCCH #1 1410 and includes at least one of the following PUCCH- resources described in the scheme for determining the PUCCH format, as described above.

[170] PUCCH transmission start symbol, number of PUCCH transmission symbols, index indicating start PRB, transmission PRB number, frequency hopping configuration, second hop frequency resources when frequency hopping is indicated, and initial CS value, code index orthogonal coverage (OCC) on the time axis, OCC length before DFT, OCC index before DFT.

[171] When the terminal transmits only SRI using PUCCH format 1, the terminal transmits PUCCH format 1 by multiplying d(0) by 1 or d(0) when transmitting NACK/DTX. Due to this, when the terminal simultaneously transmits a positive SR and a HARQ-ACK in the same time interval, in case the terminal misses the downlink control channel transmitted by the base station, even if the terminal generates a HARQ-ACK signal to be transmitted with a given value identical to the set value in the case of transmitting only SRI in PUCCH #1 1410, except for the information d(0), the base station simultaneously determines that NACK/DTX and a positive SR are transmitted and that only a positive SR is transmitted, by this by retransmitting the downlink data.

[172] The following describes in detail a second scheme for generating a HARQ-ACK signal to be transmitted with a PUCCH resource set value identical to the PUCCH resource set value in the case of transmitting only SRI in PUCCH #1 1410.

[173] In the second scheme, the terminal generates PUCCH #3 for HARQ-ACK transmission and sets the generated PUCCH #3 equal to the PUCCH resource of PUCCH #1 capable of SRI transmission. In particular, PUCCH #3 is punctured or repeatedly transmitted to match the number of transmitted symbols. In the second scheme, since it is not necessary to negotiate the PUCCH #3 rate for HARQ-ACK transmission according to the PUCCH resources of PUCCH #1 in order to form a new channel, this is advantageous when the terminal needs to transmit uplink data requiring low delay, or transmit scheduling request information for a particular logical channel or group of logical channels. When 13 PUCCH #3 symbols for PUCCH #3 transmission are generated and 8 symbols are set for PUCCH #1 transmission, the terminal transmits PUCCH #3 in the PUCCH #1 PUCCH resource by transmitting only the leading 8 symbols and decimating the trailing 5 symbols from the 13 PUCCH symbols. #3. When 5 PUCCH #3 symbols for PUCCH #3 transmission are generated and 8 symbols are set for PUCCH #1 transmission, the terminal transmits PUCCH #3 in the PUCCH #1 PUCCH resource by transmitting the front 5 symbols of PUCCH #3 and additionally transmitting 3 symbols from the front parts of PUCCH #3 in addition to the remaining 3 characters. As the initial CS value, the terminal uses the value included in the PUCCH resource indicated from the downlink control channel for PUCCH #3.

[174] When the PUCCH length (or the number of PUCCH symbols, N_PUCCH_symb) configured for PUCCH #1 1410 and PUCCH #3 1430 are identical to each other, the terminal may use the configuration information of PUCCH #3 1430 to generate reception result information for the downlink data channel, and transmit the generated reception result information through the time and frequency resources configured for PUCCH #1 1410. More specifically, the terminal may encode the reception result of the received downlink data. HARQ-ACK information using BPSK or QPSK scheme to generate d(0) and multiply a specific sequence (eg, Zadoff-Chu sequence) by d(0) and generate a spread-encoded signal by using the value of w_i (m) orthogonal sequence. In other words, the terminal generates a HARQ-ACK signal to be transmitted with a set value identical to the set value in the case of transmitting only HARQ-ACK in PUCCH #3 1430, and transmits the generated HARQ-ACK signal in the signals and frequency resources allocated by the PUCCH. #one. The configuration information for PUCCH #3 includes a Zadoff-Chu sequence, a group number of Zadoff-Chu sequences, an intra-group sequence number, a PUCCH length (or number of PUCCH symbols, N_PUCCH_symb) configured for PUCCH #1, a frequency hopping configuration, the number of symbols for the first and second hop intervals or the spreading factors (N_PUCCH_SF0, N_PUCCH_SF1) for the first and second hop intervals after frequency hopping is activated, the orthogonal sequence value for them, and any given values required to generate an uplink control channel , and the configuration information may receive an upper layer signal via the downlink control information, and the configuration information may be determined by a method for indicating, via the downlink control information, one of the set values set based on the combination of the upper layer signal and the control downlink traffic information or an upper layer signal, and the like. When the PUCCH length (or the number of PUCCH symbols, N_PUCCH_symb) configured for PUCCH #1 1410 and PUCCH #3 1430 are identical to each other, the terminal may use the configuration information of PUCCH #1 1410 to generate reception result information for the transmission channel downlink data, and transmit the generated reception result information via time and frequency resources configured for PUCCH #1 1410.

[175] Next, in a situation in which other control information (HARQ-ACK and SR) is to be transmitted in the same time slot, a method for transmitting control information according to the PUCCH format will be described with reference to the fourth and fifth embodiments.

[176] Fourth Embodiment

[177] In another embodiment, the terminal receives an upper layer signaling configuration from a base station to transmit scheduling request information via PUCCH format 0, which is a short PUCCH format, or PUCCH format 1, which is a long PUCCH format. format, and considers a situation where scheduling request information is to be transmitted in time slot n to transmit uplink data for at least one logical channel via the configured PUCCH format by the terminal. Additionally, for a terminal to transmit a reception result (HARQ-ACK) of a downlink data channel in time slot n via PUCCH format 0, which is another short PUCCH format, when the terminal receives an indicator via a specific bit field from the control channel downlink from the base station or logically concludes the indicator by the downlink control channel resource, slot index, terminal unique identifier, the terminal can perform the following operations to transmit scheduling request information and the downlink data channel reception result in the slot n.

[178] First, when PUCCH format 0 or PUCCH format 1 for transmitting scheduling request information and PUCCH format 0 for transmitting a downlink data channel reception result overlap each other in at least one OFDM symbol of a temporary slot n, the terminal performs the following operation 1, which is described below, and when they do not overlap even in one OFDM symbol, the terminal transmits scheduling request information via the configured PUCCH format to transmit a scheduling request in time slot n and transmits HARQ -ACK via PUCCH format 0.

[179] Second, when PUCCH Format 0 or PUCCH Format 1 for transmitting scheduling request information and PUCCH Format 0 for transmitting a downlink data channel reception result are transmitted in the same time slot (for example, in time slot n ), the terminal performs the next first operation to be described below, and when they are not transmitted in the same time slot, the terminal configures only one control information to be transmitted in time slot n, or transmits via the configured PUCCH format.

[180] Starting the first operation

[181] When the terminal transmits a HARQ-ACK in time slot n via PUCCH format 0, the terminal further applies a CS offset for the scheduling request. The following is a specific procedure.

[182] The terminal generates a sequence based on a group-based hopping pattern or a sequence-based hopping pattern that is configured as an upper layer signal from the base station and a configured identifier, and rotates the generated sequence based on a final CS value obtained by summing other CSs. -values and offset for additional transmission of scheduling request information with indicated initial CS value for HARQ-ACK transmission according to ACK or NACK, which should be mapped to 12 subcarriers so as to transmit the generated sequence. When the HARQ-ACK is 1 bit, in the case of an ACK, as shown in the following Table 7, a tail CS is generated by summing 6 and an offset of 3 to further transmit scheduling request information with a start CS value, and in the case of NACK, a tail CS is generated by summing 0 and offset 3 to optionally convey scheduling request information with an initial CS value. 0, which is the CS value for NACK, 6, which is the CS value for ACK, and 3, which is the CS offset value for additional scheduling request, are specified in the specification as shown in the following table, and the terminal always generates PUCCH format 0 according to the values to transmit 1-bit HARQ-ACK and scheduling request information.

[183] Tab. 7

[184]

1-bit HARQ-ACK+SR NACK ACK Final CS (initial CS+0+3) mod 12 = (initial CS+3) mod 12 (initial CS+6+3) mod 12 = (initial CS+9) mod 12

[185] When the HARQ-ACK is 2 bits, in the case of (NACK, NACK), as shown in the following Table 8, the final CS is generated by summing 0 and offset 1 to further transmit scheduling request information with the initial CS value, in the case (NACK, ACK), tail CS is generated by summing 3 and offset 1 to optionally transmit scheduling request information with initial CS value, in case of (ACK, ACK), final CS is generated by summation 6 and offset 1 to optionally transmit request information to the scheduling with the initial CS value, and in the case of (ACK, NACK), the final CS is generated by adding 9 and offset 1 to further transmit scheduling request information with the initial CS value. 0, which is the CS value for (NACK, NACK), 3, which is the CS value for (NACK, ACK), 6, which is the CS value for (ACK, ACK), 9, which is the CS value for (ACK, NACK), and 1, which is the CS offset value for the additional scheduling request, are specified in the specifications as shown in the following table, and the terminal always generates PUCCH format 0 according to the values and transmits a 2-bit HARQ-ACK and scheduling request information.

[186] If the final CS value exceeds 12 due to the CS value summed with the initial CS value according to ACK or NACK, or transmission of scheduling information, it is obvious that the sequence length is 12, and therefore modulo 12 is applied.

[187] Tab. eight

[188]

2-bit HARQ-ACK+SR NACK, NACK NACK, ACK ACK, ACK ACK, NACK Final CS (initial CS+0+1) mod 12 = (initial CS+1) mod 12 (initial CS+3+1) mod 12 = (initial CS+4) mod 12 (initial CS+6+1) mod 12 = (initial CS+7) mod 12 (initial CS+9+1) mod 12 = (initial CS+10) mod 12

[189] Fifth Embodiment

[190] In another embodiment, the terminal receives the upper layer signaling configuration from the base station to transmit scheduling request information via PUCCH format 0, which is a short PUCCH format, and considers the situation where the scheduling request information is to be transmitted in time slot n to transmit uplink data for at least one logical channel via the configured PUCCH format by the terminal. Further, for a terminal to transmit a reception result (HARQ-ACK) of a downlink data channel via PUCCH format 1, which is a long PUCCH format, when the terminal receives an indicator via a specific bit field from the downlink control channel from the base station or logically concludes the indicator by downlink control channel resource, slot index, terminal unique identifier, the terminal can perform the following operations to transmit scheduling request information and downlink data channel reception result in time slot n.

[191] First, when PUCCH format 0 for transmitting SR information and PUCCH format 1 for transmitting a downlink data channel reception result overlap each other in at least one OFDM symbol of time slot n, the terminal performs the following operation 2, which is described below. If they do not overlap in at least one OFDM symbol of time slot n, the terminal transmits a scheduling request in time slot n via PUCCH format 0 and transmits a HARQ-ACK via PUCCH format 1.

[192] Second, when PUCCH format 0 for transmitting scheduling request information and PUCCH format 1 for transmitting a downlink data channel reception result is transmitted in the same time slot (i.e., time slot n), the terminal performs the next second operation to be described below, and when they are not transmitted in the same time slot, the terminal configures only one control information to be transmitted in time slot n or transmits via the configured PUCCH format.

[193] Start of the second operation

[194] The terminal may perform one of the following four methods.

[195] In the first method, the terminal transmits only the HARQ-ACK in time slot n via PUCCH format 1. Alternatively, as the second method, the terminal transmits only the SR from time slot n via PUCCH format 0. Alternatively, as the third method , the terminal may further apply the CS offset for the HARQ-ACK transmission when transmitting the SR in time slot n via PUCCH format 0, and the specific procedure is as follows. The terminal generates a sequence based on a group-based hopping or sequence-based hopping configuration that is configured as an upper layer signal from the base station and a configured ID, and rotates the generated sequence based on a final CS value obtained by summing another CS offset with indicated by the initial CS value for SR transmission according to ACK or NACK, which should be mapped to 12 subcarriers so as to transmit the generated sequence. If the HARQ-ACK is 1 bit as shown in Table 9, in the case of ACK, the end CS is generated by adding 6 to the start CS value for SR transmission, and in the case of NACK, the end CS is generated by adding 0 to the start CS value . 0, which is the CS value for NACK, and 6, which is the CS value for ACK, are specified in the specifications as shown in Table 9, and the terminal generates PUCCH format 0 according to the values at all times when request information should be transmitted. for scheduling and 1-bit HARQ-ACK. When specified as an upper layer signal to transmit a 1-bit HARQ-ACK (or when specified as an upper layer signal to receive only one codeword or one PDSCH), the initial CS value for SR transmission is limited 0, 1, 2, 3, 4 and 5.

[196] Tab. 9

[197]

SR+1-bit HARQ-ACK NACK ACK Final CS (initial CS for SR transmission+0) mod 12 (initial CS for SR transmission+6) mod 12

[198] When the HARQ-ACK is 2 bits as shown in Table 10, in the case of (NACK, NACK), the end CS is generated by summing 0 with the initial CS value for the SR transmission, in the case of (NACK, ACK), the end The CS is formed by adding 3 to the start CS value, in the case of (ACK, ACK), the end CS is formed by adding 6 to the start CS value, and in the case of (ACK, NACK), the end CS is generated by adding 9 to the start CS- value. 0, which is the CS value for (NACK, NACK), 3, which is the CS value for (NACK, ACK), 6, which is the CS value for (ACK, ACK), and 9, which is the CS value for (ACK, NACK) are specified in the specifications as shown in Table 10, and the terminal always generates PUCCH format 0 according to the values and transmits the scheduling request information and a 2-bit HARQ-ACK. When set as an upper layer signal to transmit a 2-bit HARQ-ACK (or when specified as an upper layer signal to receive two codewords or two PDSCHs), the initial CS value for an SR transmission is limited to 0 , 1 and 2.

[199] If the final CS value exceeds 12 due to the CS value summed according to ACK or NACK transmission in the initial CS value for the SR transmission, it is obvious that the sequence length is 12, and therefore modulo 12 is applied.

[200] Tab. ten

[201]

SR+2-bit HARQ-ACK NACK, NACK NACK, ACK ACK, ACK ACK, NACK Final CS (initial CS for SR transmission+0) mod 12 (initial CS for SR transmission+3) mod 12 (initial CS for SR transmission+6) mod 12 (initial CS for SR transmission+9) mod 12

[202] Alternatively, as a fourth method, the terminal may further apply a CS offset for SR transmission when transmitting a HARQ-ACK in time slot n via PUCCH format 1, and the specific procedure is as follows. When generating the sequence for the PUCCH format 1 UCI symbol, an additional CS offset is applied to the scheduling request information. The terminal generates a sequence based on a group-based hopping pattern or a sequence-based hopping pattern and a configured ID, which are configured by an upper layer signal from the base station, and rotates the generated sequence by a value obtained by summing an additional CS offset for scheduling request information with the initial CS value indicated in the PUCCH resource, thereby forming a sequence corresponding to a length of 1 RB. The terminal applies the generated sequence for at least the DMRS symbol or UCI symbol of PUCCH format 1. The terminal configures PUCCH format 1 through the combination of UCI symbol and DMRS symbol according to the entity disclosure, and transmits PUCCH format 1 in time slot n.

[203] FIG. 10 is an operation diagram of a terminal according to the embodiment. In the following, the operation of the terminal according to the first embodiment will be described with reference to FIG. 10. In step 1010, the terminal receives configuration information (e.g., according to Table 1) regarding the bandwidth portion and the uplink control channel associated configuration information as shown in Table 2 above, regarding one or a plurality of bandwidth portions from the base station via an upper layer signal, a broadcast channel, or a downlink data channel including system information (eg, a downlink data channel scheduled with DCI scrambled with SI-RNTI). At 1020, the terminal activates at least one downlink and uplink bandwidth portion based on the partial bandwidth adaptation indicator or activation indicator via DCI transmitted via the upper layer signal or the downlink control channel. When the downlink bandwidth part and the uplink bandwidth part operate in combination with each other, the uplink bandwidth part can change and be activated along with the downlink bandwidth part adaptation indicator.

[204] If the terminal transmits the result of receiving downlink data received from the base station, or periodic channel state information, or SRS information, or transmits SR information, in step 1030, it is determined whether or not an uplink control channel is configured in the current the activated part of the uplink bandwidth. If it is determined in step 1030 that the uplink control channel is configured in the uplink bandwidth portion, in step 1050, the terminal transmits the uplink signal using the uplink control channel configured by the base station in the activated uplink bandwidth portion link, or an uplink control channel indicated via the DCI by the base station. If it is determined in step 1030 that the uplink control channel is not configured in the uplink bandwidth portion, the terminal may activate the bandwidth portion in which the uplink control channel is configured by the method described in the first embodiment of the disclosure in step 1040, and transmit the uplink signal through the uplink control channel configured in the bandwidth part.

[205] FIG. 11 is an operation diagram of a terminal according to the embodiment. In the following, the operation of the terminal according to the second embodiment will be described with reference to FIG. 11. In step 1110, the terminal receives configuration information (e.g., according to Table 1) regarding the bandwidth portion and the uplink control channel associated configuration information as shown in Table 2 above regarding one or a plurality of bandwidth portions from the base station via an upper layer signal, a broadcast channel, or a downlink data channel including system information (eg, a downlink data channel scheduled with DCI scrambled with SI-RNTI). At 1120, the terminal activates at least one downlink and uplink bandwidth portion based on the partial bandwidth adaptation indicator or activation indicator via DCI transmitted via the upper layer signal or the downlink control channel. At this time, when the downlink bandwidth part and the uplink bandwidth part operate in combination with each other, the uplink bandwidth part can change and be activated along with the downlink bandwidth part adaptation indicator.

[206] When the uplink bandwidth part changes and is activated along with the downlink bandwidth part adaptation indicator, if the terminal is to transmit the result of receiving downlink data received from the base station, or if periodic channel state information or SRS is to be transmitted - information, or SR information, the terminal can determine the time of change or activation of the uplink bandwidth part according to the first or second method described in the second embodiment of the disclosure (1130, 1140), determine the resource of the uplink control channel (configuration index uplink control channel or uplink control channel format) configured in a certain part of the activation bandwidth, and transmit the uplink signal through the control channel resource (1150).

[207] In order to carry out the above-described embodiments, a transmitter, a receiver, and a terminal and base station controller are illustrated in FIG. 12 and 13. A method for sharing resources between a data channel and a control channel in the 5G communication system according to the above embodiments, a method for specifying a data start point, and a structure of a base station and a terminal for performing various signaling for a designated, and transmitting the device, receiver, and processor of the terminal and base station must operate according to the embodiments in order to do so.

[208] FIG. 12 is an internal structure diagram of a terminal according to the embodiment. As illustrated in FIG. 12, an entity disclosure terminal may include a processor 1201, a receiver 1202, and a transmitter 1203 of the terminal.

[209] The processor 1201 of the terminal may control the serial process such that the terminal may operate according to the embodiment of the disclosure as described above. According to information such as the bandwidth configuration method, the bandwidth adaptation method, and the transmission resource configuration method on the control channel for the uplink control channel, the operation of transmitting the uplink bandwidth activation of the terminal, the uplink control channel, and the data transmission channel may be managed differently. The terminal receiver 1202 and the terminal transmitter 1203 are collectively referred to as a "transceiver". The transceiver may transmit/receive a signal to/from the base station. The signal may include control information and data. To this end, the transceiver may include an RF transmitter that upconverts and amplifies the frequency of the transmitted signal, an RF receiver that low-noise amplifies the received signal and downconverts the frequency, and the like. . Further, the transceiver may receive a signal via a radio channel and output the received signal to the terminal processor 1201 and transmit the signal output from the terminal processor 1201 via a radio channel.

[210] FIG. 13 is an internal structure diagram of a base station according to the embodiment. As illustrated in FIG. 13, an entity disclosure base station may include a processor 1301, a base station receiver 1302, and a base station transmitter 1303.

[211] The base station processor 1301 may control the sequential process such that the base station may operate according to the embodiment of the disclosure as described above. The control may be performed differently according to a bandwidth configuration method, a bandwidth adaptation method, a method for configuring control channel resource areas for an uplink control channel, and the like. In addition, various additional indicators can be controlled to be transmitted in the desired manner. The base station receiver 1302 and the base station transmitter 1303 are collectively referred to as a "transceiver". The transceiver may transmit/receive a signal to/from the terminal. The signal may include control information and data. To this end, the transceiver may include an RF transmitter that upconverts and amplifies the frequency of the transmitted signal, an RF receiver that low-noise amplifies the received signal and downconverts the frequency, and the like. . Further, the transceiver may receive a signal via a radio channel and output the received signal to the base station processor 1301 and transmit the signal output from the base station processor 1301 via the radio channel.

[212] The term "module" as used herein may represent, for example, a unit including one or more combinations of hardware, software, and firmware. The term "module" can be used interchangeably with the terms "logic", "logical block", "part", and "circuit". A "module" may be the smallest unit of an integrated part, or may form part of it. A "module" may be a minimal unit for performing one or more functions, or part of them. For example, a "module" may include an ASIC.

[213] Various embodiments of the present disclosure may be implemented by software including instructions stored on machine-readable storage media readable by a machine (eg, computer). The machine may be a device that calls an instruction from a computer-readable storage medium and operates in response to the instruction being called, and may include an electronic device. When an instruction is executed by the processor, the processor may perform the function corresponding to the instruction either directly or through other components under the control of the processor. The instruction may include code generated or executed by a compiler or interpreter. Computer-readable storage media may be provided in the form of non-transitory storage media. Here, the term "non-transient", as used herein, is a constraint on the media itself (ie, material, not signal), as opposed to a constraint on the persistence of data storage.

[214] According to an embodiment, a method according to various embodiments disclosed in the present disclosure may be provided as part of a computer program product. A computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed in the form of a computer-readable storage medium (eg, compact disc read only memory (CD-ROM)) or may be distributed only through an application store (eg, the Play Store™). In the case of Internet distribution, at least a portion of the computer program product may be temporarily stored or generated on a storage medium such as a storage device of a manufacturer's server, an application store server, or a relay server.

[215] Each component (eg, module or program) according to various embodiments may include at least one of the above components, and a portion of the above subcomponents may be omitted, or additional other subcomponents may be additionally included. Alternatively, or additionally, some components may be integrated within a single component and may perform identical or similar functions performed by the respective components prior to integration. Operations performed by a module, programming, or other components according to various embodiments of the present disclosure may be performed sequentially, in parallel, multiple times, or in a heuristic manner. In addition, at least some of the operations may be performed in other sequences, omitted, or other operations may be added.

[216] While the disclosure is shown and described with reference to specific embodiments thereof, those skilled in the art will appreciate that various changes in form and detail may be made without departing from the scope of the disclosure. Therefore, the scope of the disclosure should not be defined as being limited to the embodiments, but should be defined by the appended claims and their equivalents.

Claims (48)

1. A communication method performed by a terminal in a wireless communication system, the method comprising: identifying for transmission a Physical Uplink Control Channel (PUCCH) including a positive scheduling request (SR) and one or more hybrid automatic repeat request (HARQ-ACK) acknowledgment information bits in a PUCCH resource of PUCCH format 0 ; identifying a cyclic shift value for PUCCH format 0 based on the positive SR and the value of one or more HARQ-ACK information bits; and transmitting, to the base station, a PUCCH in a PUCCH format 0 PUCCH resource using a cyclic shift obtained from the initial cyclic shift value and said value. 2. The method of claim 1, wherein in the case where the number of one or more HARQ-ACK information bits is 1, the value is 3 for the HARQ-ACK information bit value of 0, and the value is 9 for the HARQ-ACK information bit value. ACK equal to 1 and wherein, in the case where the number of one or more HARQ-ACK information bits is 2, the value is 1 for the HARQ-ACK information bit value {0,0}, the value is 4 for the HARQ-ACK information bit value {0,1} , the value is 7 for the HARQ-ACK information bit value {1,1}, and the value is 10 for the HARQ-ACK information bit value {1,0}. 3. The method of claim 1, wherein the cyclic shift is applied to the sequence for PUCCH format 0, and wherein the initial cyclic shift value is received from the base station with a control message configuring a PUCCH resource of PUCCH format 0. 4. The method according to claim 1, further comprising the steps of: identifying to transmit an SR in a first resource using PUCCH format 0 and at least one bit of HARQ-ACK information in a second resource using PUCCH format 1, the first resource and the second resource being in a time slot; and transmitting at least one bit of HARQ-ACK information without an SR in the slot by discarding the SR. 5. A communication method performed by a base station in a wireless communication system, the method comprising: identifying for reception a physical uplink control channel (PUCCH) including a positive scheduling request (SR) and one or more hybrid automatic repeat request (HARQ-ACK) acknowledgment information bits in a PUCCH resource of PUCCH format 0 ; receiving, from the terminal, a PUCCH in a PUCCH resource of PUCCH format 0; and identifying a positive SR and a value of one or more bits of HARQ-ACK information based on a PUCCH format 0 cyclic shift, the PUCCH format 0 cyclic shift being associated with an initial cyclic shift value and said value. 6. The method of claim 5, wherein in the case where the number of one or more HARQ-ACK information bits is 1, the value is 3 for the HARQ-ACK information bit value of 0, and the value is 9 for the HARQ-ACK information bit value. ACK equal to 1 and wherein, in the case where the number of one or more HARQ-ACK information bits is 2, the value is 1 for the HARQ-ACK information bit value {0,0}, the value is 4 for the HARQ-ACK information bit value {0,1} , the value is 7 for the HARQ-ACK information bit value {1,1}, and the value is 10 for the HARQ-ACK information bit value {1,0}. 7. The method of claim 5, wherein the sequence for PUCCH format 0 is applied with a cyclic shift, wherein the initial cyclic shift value is transmitted to the terminal with a control message configuring a PUCCH resource of PUCCH format 0, and wherein the method further comprises the steps of: identifying to receive an SR in a first PUCCH format 0 resource and at least one bit of HARQ-ACK information in a second PUCCH format 1 resource, the first resource and the second resource being in a time slot; and receiving at least one bit of HARQ-ACK information without an SR in the slot, and the SR is discarded. 8. A terminal in a wireless communication system, the terminal comprising: a transceiver device configured to transmit or receive a signal; and a controller connected to the transceiver and configured to: identify for transmission a Physical Uplink Control Channel (PUCCH) including a positive scheduling request (SR) and one or more hybrid automatic repeat request (HARQ-ACK) acknowledgment information bits in a PUCCH resource of PUCCH format 0 ; identify a cyclic shift value for PUCCH format 0 based on the positive SR and the value of one or more bits of HARQ-ACK information; and transmit, to the base station, the PUCCH in the PUCCH resource of PUCCH format 0 by applying the cyclic shift obtained from the initial value of the cyclic shift and said value. 9. The terminal of claim 8, wherein in the case where the number of one or more HARQ-ACK information bits is 1, the value is 3 for the HARQ-ACK information bit value of 0, and the value is 9 for the HARQ-ACK information bit value. ACK equal to 1 and wherein, in the case where the number of one or more HARQ-ACK information bits is 2, the value is 1 for the HARQ-ACK information bit value {0,0}, the value is 4 for the HARQ-ACK information bit value {0,1} , the value is 7 for the HARQ-ACK information bit value {1,1}, and the value is 10 for the HARQ-ACK information bit value {1,0}. 10. The terminal of claim 8, wherein the cyclic shift is applied to the sequence for PUCCH format 0, and wherein the initial cyclic shift value is received from the base station with a control message configuring a PUCCH resource of PUCCH format 0. 11. The terminal according to claim 8, in which the controller is additionally configured to: identify for transmission an SR in a first resource using PUCCH format 0 and at least one bit of HARQ-ACK information in a second resource using PUCCH format 1, the first resource and the second resource being in a time slot; and transmit at least one bit of HARQ-ACK information without an SR in a slot by discarding the SR. 12. A base station in a wireless communication system, the base station comprising: a transceiver device configured to transmit or receive a signal; and a controller connected to the transceiver and configured to: identify for reception a physical uplink control channel (PUCCH) including a positive scheduling request (SR) and one or more hybrid automatic repeat request (HARQ-ACK) acknowledgment information bits in a PUCCH resource of PUCCH format 0 ; receive, from the terminal, a PUCCH in a PUCCH resource of PUCCH format 0; and identify a positive SR and a value of one or more bits of HARQ-ACK information based on the PUCCH Format 0 cyclic shift, wherein the PUCCH Format 0 cyclic shift is associated with an initial cyclic shift value and said value. 13. The base station of claim 12, wherein in the case where the number of one or more HARQ-ACK information bits is 1, the value is 3 for the HARQ-ACK information bit value of 0, and the value is 9 for the HARQ information bit value -ACK equal to 1, and wherein, in the case where the number of one or more HARQ-ACK information bits is 2, the value is 1 for the HARQ-ACK information bit value {0,0}, the value is 4 for the HARQ-ACK information bit value {0,1} , the value is 7 for the HARQ-ACK information bit value {1,1}, and the value is 10 for the HARQ-ACK information bit value {1,0}. 14. The base station of claim 12, wherein the sequence for PUCCH format 0 is applied with a cyclic shift, and wherein the initial value of the cyclic shift is transmitted to the terminal with a control message configuring a PUCCH resource of PUCCH format 0. 15. The base station according to claim 12, in which the controller is additionally configured to: identify for reception an SR in a first PUCCH format 0 resource and at least one bit of HARQ-ACK information in a second PUCCH format 1 resource, the first resource and the second resource being in a time slot; and receive at least one bit of HARQ-ACK information without an SR in the slot, and the SR is discarded.

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