Patent Description:
The present disclosure relates to an apparatus and a method for transmitting and receiving uplink data in a wireless communication system.

To meet the demand for wireless data traffic having increased since deployment of fourth generation (<NUM>) communication systems, efforts have been made to develop an improved fifth generation (<NUM>) or pre-<NUM> communication system. Therefore, the <NUM> or pre-<NUM> communication system is also called a 'beyond <NUM> network' or a 'post long term evolution (LTE) System'. The <NUM> wireless communication system is considered to be implemented not only in lower frequency bands but also in higher frequency (mmWave) bands, e.g., <NUM> to <NUM> bands, so as to accomplish higher data rates. To mitigate propagation loss of the radio waves and increase the transmission distance, the beamforming, massive multiple-input multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, an analog beam forming, and large scale antenna techniques are being considered in the design of the <NUM> wireless communication system. In the <NUM> system, hybrid frequency shift keying (FSK) and quadrature amplitude modulation (QAM) (FQAM) and sliding window superposition coding (SWSC) as an advanced coding modulation (ACM), filter bank multi carrier (FBMC), non-orthogonal multiple access (NOMA), and sparse code multiple access (SCMA) as an advanced access technology have been developed.

The Internet, which is a human centered connectivity network where humans generate and consume information, is now evolving to the internet of things (IoT) where distributed entities, such as things, exchange and process information without human intervention.

For example, technologies, such as a sensor network, MTC, and M2M communication may be implemented by beamforming, MIMO, and array antennas.

In a <NUM> communication system, a high frequency band and a low frequency band are all considered in terms of frequency, as the <NUM> communication system covers a wide range of frequency bands. However, in the high frequency band, the coverage thereof is reduced because, in the high frequency band, a propagation loss (path loss) is increased due to channel characteristics. The disadvantage is a kind of constraint that makes it difficult for existing LTE operators to place new radio (NR) base stations at the same locations as those of existing LTE base stations. One way to overcome the problem is to arrange additional uplinks in the low frequency band so as to ensure the coverage, since the coverage of the uplink is generally affected. In other words, an uplink and a downlink are arranged in the high frequency band using a time division duplex (TDD) and an uplink is additionally arranged in the low frequency band using a frequency division duplex (FDD). As described above, the arrangement of only the uplink without being paired with the downlink is referred to as a supplementary uplink (SUL). When the supplementary uplink is added in this way, an initial access procedure of a terminal considering the above, a method for transmitting and receiving data and control signals after the initial access, and the like should be supported.

Document (<NPL>, describes an UL carrier selection and UL channels reconfigurations in the LTE-NR coexistence scenario.

Document (<NPL>, describes details on SUL, single active UL and uplink alignment between LTE and NR.

Accordingly, an object of the present disclosure is directed to provision of an efficient method and apparatus for an initial access procedure of a terminal in a system having a plurality of uplinks.

Another object of the present disclosure is directed to provision of an efficient transmission and reception method and apparatus after the initial access considering capability that a receiver or a terminal can provide.

In accordance with an aspect of the disclosure, a method by a terminal for transmitting uplink data in a wireless communication system is provided, as defined in claim <NUM>.

In accordance with an aspect of the disclosure, a method by a base station for receiving uplink data in a wireless communication system is provided, as defined claim <NUM>.

In accordance with an aspect of the disclosure, a terminal for transmitting uplink data in a wireless communication system is provided, as defined in claim <NUM>.

In accordance with an aspect of the disclosure, a base station for receiving uplink data in a wireless communication system is provided, as defined in claim <NUM>.

Definitions for certain words and phrases are provided throughout this patent document. Those of ordinary skill in the art should understand that in many, if not most instances, such definitions apply to prior, as well as future uses of such defined words and phrases.

According to one embodiment of the present disclosure, in the wireless communication system having a plurality of uplinks, an initial random access channel (RACH) access can be efficiently performed, and a successful access may be effectively achieved.

In addition, according to one embodiment of the present disclosure, in the wireless communication system having a plurality of uplinks, initial and subsequent RACH accesses can be efficiently performed for each uplink transmission capability of the terminal, and the effect of improving a transmission and reception efficiency can be achieved by linking indication information transmitted at a plurality of time points to perform the uplink transmission.

Hereafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. When it is decided that a detailed description for the known function or configuration related to the present disclosure may obscure the gist of the present disclosure, the detailed description therefor will be omitted. Further, the following terminologies are defined in consideration of the functions in the present disclosure and may be construed in different ways by the intention or practice of users and operators. Therefore, the definitions thereof should be construed based on the contents throughout the specification.

Various advantages and features of the present disclosure and methods accomplishing the same will become apparent from the following detailed description of embodiments with reference to the accompanying drawings. Therefore, the present disclosure will be defined by the scope of the appended claims. Like reference numerals throughout the description denote like elements.

It is known to those skilled in the art that blocks of a flowchart (or sequence diagram) and a combination of flowcharts may be represented and executed by computer program instructions. These computer program instructions may be loaded on a processor of a general purpose computer, special purpose computer, or programmable data processing equipment. When the loaded program instructions are executed by the processor, they create a means for carrying out functions described in the flowchart. Because the computer program instructions may be stored in a computer readable memory that is usable in a specialized computer or a programmable data processing equipment, it is also possible to create articles of manufacture that carry out functions described in the flowchart. Because the computer program instructions may be loaded on a computer or a programmable data processing equipment, when executed as processes, they may carry out operations of functions described in the flowchart.

A block of a flowchart may correspond to a module, a segment, or a code containing one or more executable instructions implementing one or more logical functions, or may correspond to a part thereof. In some cases, functions described by blocks may be executed in an order different from the listed order. For example, two blocks listed in sequence may be executed at the same time or executed in reverse order.

In this description, the words "unit", "module" or the like may refer to a software component or hardware component, such as, for example, a field-programmable gate array (FPGA) or an application-specific integrated circuit (ASIC) capable of carrying out a function or an operation. However, a "unit", or the like, is not limited to hardware or software. A unit, or the like, may be configured so as to reside in an addressable storage medium or to drive one or more processors. Units, or the like, may refer to software components, object-oriented software components, class components, task components, processes, functions, attributes, procedures, subroutines, program code segments, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays or variables. A function provided by a component and unit may be a combination of smaller components and units, and may be combined with others to compose larger components and units. Components and units may be configured to drive a device or one or more processors in a secure multimedia card.

Prior to the detailed description, terms or definitions necessary to understand the disclosure are described. However, these terms should be construed in a non-limiting way.

The "base station (BS)" is an entity communicating with a user equipment (UE) and may be referred to as BS, base transceiver station (BTS), node B (NB), evolved NB (eNB), access point (AP), <NUM> NB (5GNB), or gNB.

The "UE" is an entity communicating with a BS and may be referred to as UE, device, mobile station (MS), mobile equipment (ME), or terminal.

First, it is assumed that a base station transmits and receives signals through a plurality of component carriers (CCs). Some of the plurality of component carriers are composed of a supplementary uplink having only an uplink and some are composed of uplink and downlink pairs.

<FIG> is a diagram illustrating a case where component carriers include two supplementary uplinks (<NUM>, <NUM>), a frequency division duplex (FDD) uplink/downlink (<NUM>) and two time division duplex (TDD) uplink/downlinks (<NUM>, <NUM>).

In an initial access, a terminal receives a synchronization signal block in one of the component carriers having the downlink and acquires a physical cell ID of the corresponding component carrier based on the received synchronization signal block. The terminal then receives remaining system information (RMSI), performs a random access channel (RACH) operation based on RACH configuration information in the supplementary uplinks received from the RMSI and the uplink paired with the downlink where the synchronization signal block is received, and terminates a radio resource control (RRC) connection procedure after Msg5.

The terminal may perform the RACH operation through one of the supplementary uplinks or one of the uplinks paired with the downlink where the synchronization signal block is received. That is, according to an embodiment of <FIG>, the terminal may perform an initial random access operation using any one of the component carriers having three uplinks, i.e., two supplementary uplinks (<NUM>, <NUM>) and one uplink (one of <NUM>, <NUM>, <NUM>) paired with the downlink where the synchronization signal block is received. In the operation, the base station may assign an ID to the supplementary uplink having no downlink, and the following methods are available.

Through the above operation, the base station and the terminal may assign the ID to the supplementary uplink. The supplementary uplink ID is an ID different from the physical cell ID. Therefore, the physical cell ID of the terminal that performs the random access in the supplementary uplink corresponds to the physical cell ID of the component carrier with which the terminal is synchronized irrespective of the supplementary uplink ID.

<FIG> is a diagram illustrating an example of assigning an ID of a supplementary uplink according to one embodiment of the present disclosure, where, when the ID of the supplementary uplink is transmitted in RMSI, the ID is assigned.

The base station may transmit the ID of the supplementary uplink included in the RMSI. In this case, the base station may inform the terminal of all the IDs of the supplementary uplinks available to the base station. Therefore, referring to <FIG>, a SUL ID <NUM> and a SUL ID <NUM> may be assigned to two supplementary uplinks (<NUM>, <NUM>), respectively, which may be IDs different from physical cell identifiers.

Meanwhile, as described above, the ID of the supplementary uplink may be transmitted to the terminal in the Msg2 or the Msg4, and detailed description thereof will be described below.

<FIG> is a diagram illustrating a method of assigning IDs to supplementary uplinks in which a terminal performs the random access using a Msg2 or a Msg4, according to one embodiment of the present disclosure.

Referring to <FIG>, a base station may assign a SUL ID <NUM> to the supplementary uplink in which the terminal performs the random access. In this case, the base station may assign the ID of the supplementary uplink (<NUM>) using the Msg2 or the Msg4, and may not assign the ID to the supplementary uplink (<NUM>) in which the random access is not performed.

Meanwhile, the terminal enters an 'RRC-connected' state after the initial random access operation. Then, when the base station schedules supplementary uplink resources through a downlink primary component carrier, it is possible to indicate which supplementary uplink among the plurality of supplementary uplinks is scheduled using the ID of the supplementary uplink.

The ID of the supplementary uplink may be informed based on a supplementary uplink component carrier indication field (SUL-CIF) and included in downlink control information (DCI) for scheduling uplink resources.

In one embodiment of the present disclosure, when there is one supplementary uplink for a terminal, a value '<NUM>' of SUL-CIF may indicate scheduling to the supplementary uplink, and a value '<NUM>' of SUL-CIF may indicate scheduling to the uplink paired with the downlink of the primary component carrier.

<FIG> is a diagram illustrating an example of a method for distinguishing the supplementary uplink component carrier from the component carrier, according to one embodiment of the present disclosure.

Referring to <FIG>, there are SUL (<NUM>), SUL (<NUM>), NR FDD (<NUM>), NR TDD1 (<NUM>) and NR TDD2 (<NUM>). When scheduling uplink resources using a downlink control channel in NR TDD1 (<NUM>), NR FDD (<NUM>) and NR TDD2 (<NUM>) may be distinguished from each other based on a component carrier indication field (CIF), and two supplementary uplinks (<NUM>, <NUM>) may be distinguished from each other based on the SUL-CIF.

<FIG> is a diagram illustrating an example of a supplementary uplink component carrier indication field and a component carrier indication field, according to one embodiment of the present disclosure.

The example of <FIG> shows a case where a terminal to which a base station is to schedule uplink resources has one supplementary uplink and one secondary component carrier uplink. Since the terminal has only one supplementary uplink, the base station may transmit the supplementary uplink component carrier indication on whether or not to be scheduled for the supplementary uplink in <NUM> bit. In addition, since the terminal has also only one secondary component carrier, the base station may also transmit the component carrier indication in <NUM> bit. For example, the base station may configure a value '<NUM>' of CIF and a value '<NUM>' of SUL-CIF to indicate that downlink control information transmitted on a downlink control channel in a primary component carrier downlink is for scheduling a primary component carrier uplink. The base station may configure a value '<NUM>' of SUL-CIF to indicate that downlink control information transmitted on a downlink control channel in a primary component carrier downlink is for scheduling the supplementary uplink. The base station may configure a value '<NUM>' of CIF to indicate downlink control information transmitted on a downlink control channel in a primary component carrier downlink is for scheduling a secondary component carrier uplink. If the supplementary uplink is not configured for the terminal in a cell, SUL-CIF may be not configured, i.e., zero (<NUM>) bit of SUL-CIF may be configured. Alternatively, the base station may pre-configure the length of the supplementary uplink component carrier indication field to N bits, and in this case, the base station may transmit the corresponding information by <NUM> bit of the N bits. The base station may also pre-configure the length of the component carrier indication field to M bits, and in this case, the base station may transmit the corresponding information in <NUM> bit of the M bits.

<FIG> is a diagram illustrating an example of the supplementary uplink component carrier indication field and the component carrier indication field when there are the plurality of supplementary uplinks, according to one embodiment of the present disclosure. The example of <FIG> shows a case where a terminal to which a base station is to schedule uplink resources has three supplementary uplinks and one secondary component carrier uplink. Since three supplementary uplinks exist, the base station may use <NUM> bits of SUL-CIF to indicate which supplementary uplink downlink among three supplementary uplinks is scheduled in downlink control information transmitted on a downlink control channel transmitted in a primary component carrier downlink.

Next, a case where the supplementary uplink has an independent physical cell ID is considered. The base station may also transmit the physical cell ID corresponding to each supplementary uplink when transmitting the RACH configuration information on the supplementary uplinks in the RMSI. In one embodiment of the present disclosure, when the supplementary uplink is the long term evolution (LTE) band, the physical cell ID used in the corresponding band of LTE may be also used in the supplementary uplink of the new radio (NR). In contrast, a value different from that of the LTE may be used.

<FIG> is a diagram illustrating an example of transmitting the physical cell ID of the supplementary uplinks in the remaining system information (RMSI), according to one embodiment of the present disclosure.

Here, the physical cell ID of the supplementary uplinks may be transmitted in the process of the terminal performing the random access operation using the supplementary uplink. When the terminal performs the random access, the base station may transmit the physical cell ID of the supplementary uplink to the terminal in the Msg2 or the Msg4.

Referring to <FIG>, the physical cell ID (e.g., <NUM>, <NUM>) of the supplementary uplinks (<NUM>, <NUM>) in the present disclosure may be transmitted in the Msg2 or the Msg4 during the random access process.

Next, when the physical cell ID is assigned to the supplementary uplink as described above, the following methods are available for configuring a primary component carrier (PCC) and a secondary component carrier (SCC) of the uplink.

In this case, the base station is aware of the location of the primary component carrier of the terminal based on the location of the random access Msg1 from the terminal. When the terminal performs the random access using the supplementary uplink, the supplementary uplink becomes an uplink primary component carrier, and when the terminal performs the random access process using the uplink paired with the downlink where the synchronization signal block is received is performed, the paired uplink becomes the uplink primary component carrier. Detailed descriptions thereof will be described in <FIG>.

<FIG> is a flowchart illustrating a method by a base station for configuring the uplink primary component carrier, according to one embodiment of present disclosure.

Referring to <FIG>, the base station may receive the random access signal (or random access preamble) from the terminal at operation <NUM>. Then, the base station may check whether or not the received random access signal is received in the supplementary uplink at operation <NUM>.

As the check result, if the random access signal is received in the supplementary uplink, the base station may configure the primary component carrier with the supplementary uplink at operation <NUM>. On the contrary, if the random access signal is not received in the supplementary uplink, the base station may configure the primary component carrier with the uplink paired with the downlink where the synchronization signal block is received at operation <NUM>.

<NUM>) Method <NUM>: The terminal receives information on the presence of the supplementary uplink in the RMSI, and when the terminal may perform the random access using the supplementary uplink, the terminal may inform the base station of the location of the uplink primary component carrier using one of the Msg1, the Msg3, and the Msg5 in the random access. The Msg3 may refer to an RRC connection request message, and the Msg5 may refer to an RRC connection setup complete message.

In this case, even though the terminal performs the random access using the uplink paired with the downlink where the synchronization signal block is received, the supplementary uplink may be configured as the primary component carrier, and the base station may be informed. On the contrary, even though the random access is performed using the supplementary uplink, the uplink paired with the downlink where the synchronization signal block is received may be configured as the primary component carrier, and the base station may be informed. The base station may go through the process of approving the location of the primary component carrier received from the terminal or may accept the location informed by the terminal as it is. Detailed descriptions thereof will be described in <FIG>.

Referring to <FIG>, the base station may receive the Msg1, the Msg3 or the Msg5 from the terminal, and then receive the primary component carrier configuration information at operation <NUM>.

Then, the base station may determine whether the supplementary uplink is configured as the primary component carrier at operation <NUM>. If the supplementary uplink is configured as the uplink primary component carrier, the base station may configure the primary component carrier with the supplementary uplink at operation <NUM>. On the contrary, if the supplementary uplink is not configured as the primary component carrier, the base station may configure the primary component carrier with the uplink paired with the downlink where the synchronization signal block is received at operation <NUM>.

If the base station goes through the process of approving the location of the primary component carrier, the following methods are available.

<NUM>-<NUM>) Method <NUM>-<NUM>: If the terminal informs the base station of primary component carrier configuration information using the Msg1, the base station may approve the location of the uplink primary component carrier, or may indicate another location of the uplink primary component carrier using the Msg2 (or Msg4).

Referring to <FIG>, the base station may receive the Msg1 from the terminal and acquire uplink primary component carrier configuration information at operation <NUM>.

Then, the base station may determine whether to approve the configuration information of the uplink primary component carrier received from the terminal, and may transmit the information related to the approval or disapproval to the terminal at operation <NUM>. In this case, the base station may transmit the information related to the approval or disapproval to the terminal in the Msg2 or the Msg4.

<NUM>-<NUM>) Method <NUM>-<NUM>: If the terminal informs the base station of the primary component carrier configuration information using the Msg3, the base station may approve the location of the uplink primary component carrier or indicate another location of the uplink primary component carrier using the Msg4.

Referring to <FIG>, the base station may receive the Msg1 from the terminal and acquire the uplink primary component carrier configuration information at operation <NUM>.

Then, the base station may determine whether or not to approve the configuration information of the uplink primary component carrier received from the terminal, and may transmit the information related to the approval or disapproval to the terminal at operation <NUM>. In this case, the base station may transmit the information related to the approval or disapproval to the terminal in the Msg4.

<NUM>) Method <NUM>: The base station may acquire the supplementary uplink capability of the terminal based on the random access Msg1, Msg3, or Msg5 from the terminal, and may determine the uplink primary component carrier to inform the terminal of the determined result.

In this case, if the terminal transmits the random access Msg1 in the supplementary uplink, the terminal may not explicitly inform the base station of the supplementary uplink capability that the terminal has. However, if the terminal transmits the random access Msg1 to the uplink paired with the downlink where the synchronization signal block is received, the terminal explicitly informs the base station of the supplementary uplink capability using the Msg1, the Msg3, or the Msg5. If the base station acquires the supplementary uplink capability of the terminal based on the Msg1, the base station may determine the uplink primary component carrier and inform the terminal of the determined result using the Msg2 (or Msg4).

Referring to <FIG>, the base station may receive the Msg1 including the random access preamble from the terminal at operation <NUM>. In this case, the Msg1 may include information on the supplementary uplink capability of the terminal, and the base station may check the supplementary uplink capability of the terminal.

Therefore, the base station may transmit the uplink primary component carrier configuration information to the terminal in the Msg2 or the Msg4 based on the supplementary uplink capability of the terminal at operation <NUM>.

Here, the base station may acquire the supplementary uplink capability of the terminal based on the Msg3. In such a case, the base station may determine the uplink primary component carrier and inform the terminal of the determined result using the Msg4.

Referring to <FIG>, the base station may receive the Msg3 from the terminal and may check the supplementary uplink capability of the terminal at operation <NUM>.

Then, the base station may transmit the uplink primary component carrier configuration information to the terminal in the Msg4 based on the supplementary uplink capability of the terminal at operation <NUM>.

<FIG> is a flowchart illustrating a method by a terminal for transmitting uplink data in a wireless communication system according to an embodiment of the disclosure.

Referring to <FIG>, the terminal receives downlink control information for scheduling of uplink transmission in a cell from a base station at operation <NUM>. As described above, the downlink control information may include an indicator indicating whether the scheduling of the uplink transmission is associated with a supplementary uplink in the cell. The indicator may be transmitted in <NUM> bit to indicate whether or not to be scheduled for the supplementary uplink. If the supplementary uplink is not configured for the terminal in a cell, the indicator may be not configured, i.e., the indicator may be configured with zero (<NUM>) bit.

The terminal determines whether to transmit the uplink data on the supplementary uplink or a non-supplementary uplink (e.g., a primary component carrier uplink, a secondary component carrier uplink) based on the indicator, and transmits the uplink data on the supplementary uplink or the non-supplementary uplink based on the determination at operation <NUM>. Specifically, if the indicator indicates that the scheduling of the uplink transmission is associated with the supplementary uplink, the terminal determines to transmit the uplink data on the supplementary uplink. Or, if the indicator indicates that the scheduling of the uplink transmission is associated with the non-supplementary uplink, the terminal determines to transmit the uplink data on the non-supplementary uplink.

<FIG> is a flowchart illustrating a method by a base station for receiving uplink data in a wireless communication system according to an embodiment of the disclosure.

Referring to <FIG>, the base station transmits downlink control information for scheduling of uplink transmission in a cell to a terminal at operation <NUM>. As described above, the base station may configure and transmit an indicator in the downlink control information to indicate whether the scheduling of the uplink transmission is associated with a supplementary uplink in the cell.

The base station receives the uplink data at operation <NUM>. If the base station transmits the downlink control information including the indicator indicating that the scheduling of the uplink transmission is associated with the supplementary uplink, the uplink data is received on the supplementary uplink. If the base station transmits the downlink control information including the indicator indicating that the scheduling of the uplink transmission is associated with a non-supplementary uplink in the cell, the uplink data is received on the non-supplementary uplink.

<FIG> is a block diagram of a terminal according to an embodiment of the disclosure.

Referring to <FIG>, the terminal includes a transceiver <NUM> and a controller <NUM>. The transceiver <NUM> and the controller <NUM> are configured to perform the above described operations of the terminal. Although the transceiver <NUM> and the controller <NUM> are shown as separate entities, they may be realized as a single entity like a single chip. The transceiver <NUM> and the controller <NUM> may be electrically connected to or coupled with each other.

The transceiver <NUM> may transmit and receive signals to and from other network entities, e.g., a base station.

The controller <NUM> may control the terminal to perform a function according to one of the embodiments described above. For example, the controller <NUM> may be configured to control the transceiver <NUM> to receive downlink control information for scheduling of uplink transmission in a cell from a terminal, to determine whether to transmit the uplink data on the supplementary uplink or a non-supplementary uplink based on the indicator, and to control the transceiver <NUM> to transmit the uplink data on the supplementary uplink or the non-supplementary uplink based on the determination. In addition, the controller <NUM> may be configured to control the transceiver <NUM> to receive RACH configuration information for the supplementary uplink from the base station in system information, to determine whether to perform a RA procedure on the supplementary uplink, and to control the transceiver <NUM> to transmit a RA preamble to the base station on the supplementary uplink if the RA procedure is determined to be performed on the supplementary uplink. The controller <NUM> may refer to a circuitry, an ASIC, or at least one processor.

<FIG> is a block diagram of a base station according to an embodiment of the disclosure.

Referring to <FIG>, a base station includes a transceiver <NUM> and a controller <NUM>. The transceiver <NUM> and the controller <NUM> are configured to perform the above described operations of the network (e.g., gNB). Although the transceiver <NUM> and the controller <NUM> are shown as separate entities, they may be realized as a single entity like a single chip. The transceiver <NUM> and the controller <NUM> may be electrically connected to or coupled with each other.

The transceiver <NUM> may transmit and receive signals to and from other network entities, e.g., a terminal.

The controller <NUM> may control the base station to perform a function according to one of the embodiments described above. For example, the controller <NUM> may be configured to control the transceiver <NUM> to transmit downlink control information for scheduling of uplink transmission in a cell to the terminal and receive the uplink data from the terminal on a supplementary uplink or a non-supplementary uplink in the cell. If the base station transmits the downlink control information including an indicator indicating that the scheduling of the uplink transmission is associated with the supplementary uplink, the uplink data is received on the supplementary uplink. If the base station transmits the downlink control information including an indicator indicating that the scheduling of the uplink transmission is associated with the non-supplementary uplink, the uplink data is received on the non-supplementary uplink. In addition, the controller <NUM> may be configured to control the transceiver <NUM> to transmit RACH configuration information for the supplementary uplink to terminal in system information and receive a RA preamble from the terminal on the supplementary uplink if the RA procedure is determined to be performed on the supplementary uplink. The controller <NUM> may refer to a circuitry, an ASIC, or at least one processor.

Meanwhile, the embodiments of the present disclosure disclosed in the present specification and the accompanying drawings have been provided only as specific examples in order to assist in understanding the present disclosure and do not limit the scope of the present disclosure.

Claim 1:
A method performed by a terminal for transmitting uplink data in a wireless communication system, the method comprising:
receiving a synchronization signal block;
acquiring a physical cell identity based on the synchronization signal block;
receiving, from a base station, random access channel, RACH, configuration information for a supplementary uplink in system information;
determining whether to perform a random access, RA, procedure on the supplementary uplink based on the RACH configuration information;
transmitting, to the base station, an RA preamble on the supplementary uplink in case that the RA procedure is determined to be performed on the supplementary uplink;
receiving, from the base station, a random access response message based on a transmission of the RA preamble;
receiving (<NUM>), from the base station, downlink control information for scheduling of uplink data in a cell, the downlink control information including an indicator indicating whether the scheduling of the uplink data is associated with a non-supplementary uplink or the supplementary uplink in the cell, wherein a size of the indicator is one bit; and
transmitting (<NUM>), to the base station, the uplink data on the supplementary uplink in the cell, in case that the indicator indicates that the scheduling of the uplink data is associated with the supplementary uplink in the cell.