Method and apparatus for setting downlink control channel reception time in wireless communication system

#The disclosure relates to a method and an apparatus for receiving downlink control channel in a wireless communication system, and more specifically to a method in which a terminal (UE) changes a reception time or reception timing of a downlink control channel transmitted from a base station according to configuration or indication of the base station.

#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, 60 GHz band) is being considered. In the 5G communication system, technologies such as beamforming, massive MIMO, full-dimensional MIMO (FD-MIMO), array antennas, analog beam-forming, and large-scale antennas are being discussed as means to mitigate a propagation path loss in the mmWave band and increase a propagation transmission distance. Further, in order to improve the system network, in the 5G communication system, development has progressed on 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 reception interference cancellation. In addition, in the 5G system, development has progressed on 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).

#Meanwhile, the Internet has evolved from a human-oriented connection network in which humans generate and consume information to 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 through a connection with a cloud server or the like is combined with the IoT technology has emerged. In order to implement the IoT, technical factors such as a sensing technique, wired/wireless communication, network infrastructure, service-interface technology, and security technology are required, and research on 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 in connected objects, an intelligent Internet technology (IT) service to create new value for peoples' lives may be provided. The IoT may be applied to fields, such as a smart home, a smart building, a smart city, a smart car, a connected car, a smart grid, health care, smart home appliances, or a high-tech medical service, through convergence between the conventional information technology (IT) and various industries.

#FIG. 1 illustrates a downlink time-frequency domain transmission structure of an LTE or LTE-A system;

#FIG. 2 illustrates an uplink time-frequency domain transmission structure of an LTE or LTE-A system;

#FIG. 3 illustrates an example in which data for eMBB, URLLC, and mMTC in a communication system are allocated from a frequency-time resource;

#In describing the embodiments of the disclosure, descriptions related to technical contents which are well-known in the art to which the disclosure pertains, and are not directly associated with the disclosure, will be omitted. Such an omission of unnecessary descriptions is intended to prevent obscuring of the main idea of the disclosure and to more clearly transfer the main idea.

#For the same reason, in the accompanying drawings, some elements may be exaggerated, omitted, or schematically illustrated. Further, the size of each element may not accurately reflect the actual size. In the drawings, identical or corresponding elements are provided with identical reference numerals.

#The advantages and features of the disclosure and methods of achieving the same will be made apparent by referring to the embodiments described below in detail in conjunction with the accompanying drawings. However, the disclosure is not limited to the embodiments set forth below, and may be implemented in various different forms. The following embodiments are provided only to make the disclosure complete and completely inform those skilled in the art to which the disclosure belongs of the scope of the disclosure. The disclosure is defined only by the scope of the claims. Throughout the specification, the same reference numerals designate the same elements.