PRIORITY

This application is a National Phase Entry of PCT International Application No. PCT/KR2018/001134 which was filed on Jan. 25, 2018, and claims priority to Korean Patent Application No. 10-2017-0016830, which was filed on Feb. 7, 2017, the content of each of which is incorporated herein by reference.

TECHNICAL FIELD

The disclosure relates to a wireless communication system and to a method and a device for efficiently providing a service in a communication system. More particularly, the disclosure relates to a method and a device for transmitting/receiving downlink and uplink control information in a communication system.

BACKGROUND ART

In order to meet wireless data traffic demands, which have increased since the commercialization of a 4G communication system, efforts to develop an improved 5G communication system or a pre-5G communication system have been made. For this reason, the 5G communication system or the pre-5G communication system is called a beyond-4G-network communication system or a post-LTE system.

In order to achieve a high data transmission rate, implementation of the 5G communication system in an mmWave band (for example, a 60 GHz band) is being considered. In the 5G communication system, technologies regarding beamforming, massive MIMO, full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and large-scale antennas are being discussed in order to mitigate a propagation path loss in the mm Wave band and to increase a propagation transmission distance.

Further, in the 5G communication system, technologies such as an evolved small cell, an advanced small cell, a cloud radio access network (cloud RAN), an ultra-dense network, device-to-device communication (D2D), a wireless backhaul, a moving network, cooperative communication, coordinated multi-points (CoMP), and received interference cancellation have been developed in order to improve the system network.

In addition, in the 5G system, advanced coding modulation (ACM) schemes such as hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC), and advanced access technologies such as filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA), and sparse code multiple access (SCMA), have been developed.

Meanwhile, the Internet has evolved from a human-oriented connection network, in which humans generate and consume information, to encompass an Internet-of-Things (IoT) network, in which distributed components such as objects exchange and process information. Internet-of-Everything (IoE) technology, in which big-data processing technology is combined with the IoT technology through a connection with a cloud server or the like, has emerged. In order to implement IoT, technical factors such as sensing technology, wired/wireless communication, network infrastructure, service-interface technology, and security technology are required, and research into technologies such as a sensor network, machine-to-machine (M2M) communication, machine-type communication (MTC), and the like for connection between objects has recently been conducted. In an IoT environment, through collection and analysis of data generated by connected objects, an intelligent Internet technology (IT) service that creates new value in peoples' lives may be provided. The IoT may be applied to fields such as those of a smart home, a smart building, a smart city, a smart car or a connected car, a smart grid, health care, a smart home appliance, or high-tech medical services through the convergence of conventional information technology (IT) and various industries.

Accordingly, various attempts to apply the 5G communication to the IoT network are made. For example, technologies (5G communication technologies) such as a sensor network, machine-to-machine (M2M) communication, and machine-type communication (MTC) are implemented by techniques such as beamforming, MIMO, and array antennas. The application of a cloud RAN as the big data processing technology described above may be an example of convergence of the 5G technology and the IoT technology.

There is a need for a method and a device using the same, wherein multiple services can be provided to a user in a communication system as described above, and respective services can be provided within the same time interval according to the characteristics thereof in order to provide the multiple services to the user.

DISCLOSURE OF INVENTION

Technical Problem

The disclosure provides a method and a device wherein, when a terminal is to transmit uplink control information and uplink data through one uplink transmission slot or through one or more uplink transmission slots, the position of the slot through which the uplink control information is transmitted, the control information, and data information are transmitted/received efficiently such that communication between the base station and the terminal or between the terminal and another terminal can be provided efficiently.

In addition, the disclosure provides a method and a device for indicating the start symbol and end symbol (or sections) of uplink/downlink data to a terminal using a terminal-common control channel or a terminal-specific control channel.

In addition, the disclosure provides a method and a device for simultaneously providing different types of (or identical types of) services, wherein, when a specific type of service influences (interferes with, in a wireless communication environment) another type of service or the same type of service, the corresponding information is configured as control information and is transferred from the base station to the terminal.

Solution to Problem

In order to solve the above-mentioned problems, a method of a terminal according to an embodiment includes: receiving information indicating at least one time interval, in which scheduling information is to be monitored, from a base station through a downlink control channel; and receiving downlink scheduling information or uplink scheduling information in the at least one time interval indicated by the information.

In order to solve the above-mentioned problems, a terminal according to an embodiment includes: a transmission/reception unit configured to transmit and receive a signal; and a control unit configured to receive information indicating at least one time interval, in which scheduling information is to be monitored, from a base station through a downlink control channel, and configured to receive downlink scheduling information or uplink scheduling information in the at least one time interval indicated by the information.

In order to solve the above-mentioned problems, a method of a base station according to an embodiment includes: transmitting information indicating at least one time interval, in which scheduling information is to be monitored, to a terminal through a downlink control channel; and transmitting, to the terminal, at least one of downlink scheduling information or uplink scheduling information in the at least one time interval indicated by the information.

In order to solve the above-mentioned problems, a base station according to an embodiment includes: a transmission/reception unit configured to transmit and receive a signal; and a control unit configured to transmit information indicating at least one time interval, in which scheduling information is to be monitored, to a terminal through a downlink control channel, and configured to transmit, to the terminal, at least one of downlink scheduling information or uplink scheduling information in the at least one time interval indicated by the information.

In order to solve the above-mentioned problems, a method of a terminal according to an embodiment includes: receiving control information for scheduling transmission or reception in a slot from a base station through a control channel; identifying a first symbol indicated by the control information and a second symbol determined based on the format of the slot; and transmitting/receiving data to/from the base station according to the control information within an interval determined by the first symbol and the second symbol.

In order to solve the above-mentioned problems, a terminal according to an embodiment includes: a transmission/reception unit configured to transmit and receive a signal; and a control unit configured to receive control information for scheduling transmission or reception in a slot from a base station through a control channel, configured to identify a first symbol indicated by the control information and a second symbol determined based on the format of the slot, and configured to transmit/receive data to/from the base station according to the control information within an interval determined by the first symbol and the second symbol.

In order to solve the above-mentioned problems, a method of a base station according to an embodiment includes: transmitting control information for scheduling transmission or reception in a slot to a terminal through a control channel; and transmitting/receiving data to/from the terminal according to the control information within an interval determined by a first symbol indicated by the control information and by a second symbol determined based on the format of the slot.

In order to solve the above-mentioned problems, a base station according to an embodiment includes: a transmission/reception unit configured to transmit and receive a signal; and a control unit configured to transmit control information for scheduling transmission or reception in a slot to a terminal through a control channel, and configured to transmit/receive data to/from the terminal according to the control information within an interval determined by a first symbol indicated by the control information and by a second symbol determined based on the format of the slot.

In order to solve the above-mentioned problems, a method of a terminal according to an embodiment includes: receiving, from a base station, an indicator indicating whether or not a retransmitted code block is to be combined and processed; and decoding, based on the indicator, the retransmitted code block.

In order to solve the above-mentioned problems, a terminal according to an embodiment includes: a transmission/reception unit configured to transmit and receive a signal; and a control unit configured to receive, from a base station, an indicator indicating whether or not a retransmitted code block is to be combined and processed, and configured to decode, based on the indicator, the retransmitted code block.

In order to solve the above-mentioned problems, a method of a base station according to an embodiment includes: transmitting, to a terminal, an indicator indicating whether or not a retransmitted code block is to be combined and processed; and receiving, from the terminal, a result of decoding the retransmitted code block based on the indicator. In order to solve the above-mentioned problems, a base station according to an embodiment includes: a transmission/reception unit configured to transmit and receive a signal; and a control unit configured to transmit, to a terminal, an indicator indicating whether or not a retransmitted code block is to be combined and processed, and configured to receive, from the terminal, a result of decoding the retransmitted code block based on the indicator.

Advantageous Effects of Invention

An embodiment of the disclosure provides a method wherein, when a terminal is to transmit uplink control information and uplink data through one uplink transmission slot or through more than one uplink transmission slots, the uplink control information and data are transmitted/received efficiently such that at least one of frequency-time and space resources and transmission power can be used efficiently.

In addition, an embodiment of the disclosure minimizes bits added to a terminal-common control channel for indicating common information to multiple terminals and bits added to a terminal-specific control channel for scheduling uplink/downlink data to the terminals such that the start symbol and end symbol (or intervals) of the uplink/downlink data can be indicated to the terminals, and the terminals can transmit/receive the uplink/downlink data through the information.

In addition, an embodiment of the disclosure provides a method wherein data can be transmitted effectively using different types of services in a communication system, data transmission can coexist between the different types of services, thereby satisfying requirements according to respective services, and the delay of transmission time can be reduced, or at least one of frequency-time and space resources can be used efficiently.

