Samsung Electronics Co., Ltd.

Seoul National University

Byoung-Hoon Jung

Seung-Hoon Park

Jung-Soo Jung

Jung-Min Moon

Sun-Heui Ryoo

Sang-Hyun Chang

Hyun-Jeong Kang

Sunghyun Choi

Seungmin Yoo

Soo-Young Jang

Jaehong Yi

Seongwon Kim

Youngwook Son

Anil Agiwal

Anshuman Nigam

Dae-Hyun Kim

Jong-Ho Oh

Karthik Rangaraj Manavalan

O Hyun Jo

O-Hyun Jo

The present invention relates to 5G or pre-5G communication system for supporting a higher data transmission rate after 4G communication system such as LTE. The present invention provides a method for transmitting data on the basis of a measurement of a channel of an unlicensed band in a mobile communication system, the method comprising the procedures of: selecting a random number for backoff counting; determining whether to decrement the random number by 1; decrementing the random number by 1 on the basis of the determining; determining whether the channel is idle by measuring the channel; completing the backoff counting if the random number becomes 0; and transmitting data by means of the channel if the backoff counting is completed.

LBT technique for frequency reuse in communication system using unlicensed band

Disclosed is a 5G or pre-5G communication system provided so as to support a data transmission rate higher than that of a 4G communication system, such as LTE. A method and a device for transmitting information in a communication system are disclosed. The method for allocating resources in a cellular network using an unlicensed band comprises the steps of: generating at least one resource allocation signal containing information indicating a plurality of continuous uplink subframes capable of communicating through the unlicensed band; transmitting the resource allocation signal to a user equipment (UE) through the unlicensed band for the duration of at least one downlink subframe; and receiving uplink data from the UE for the duration of the continuous uplink subframes.

Method for allocating resources in cellular network using unlicensed band and device therefor

The present disclosure relates to a pre-5-generation (pre-5G) or 5G communication system to be provided for supporting higher data rates beyond 4-generation (4G) communication system such as long term evolution (LTE). A method and an apparatus for performing a hybrid automatic repeat request (HARQ) for reducing latency in wireless communication systems are provided. The method includes receiving a concatenated packet including a short transmission time interval (TTI) packet and a long TTI packet from a transmitter, decoding the short TTI packet, feeding, when decoding the short TTI packet fails, a negative acknowledgement (NACK) back to the transmitter, and receiving a retransmission packet including the short TTI packet and the long TTI packet from the transmitter.

Method and apparatus for performing hybrid automatic repeat request in wireless communication system

A 5generation (5G) or a pre-5G communication system to support a higher data transmission rate than a system after a 4generation (4G) communication system such as long-term evolution (LTE) is provided. A method of determining a carrier sense threshold by one source terminal in a wireless communication system is provided. The method includes identifying whether one or more interferer terminals and one or more destination terminals exist for one source terminal, and if the terminals exist, determining a carrier sense threshold of each of the one or more interferer terminals and the one or more destination terminals based on an interference intensity received from the one or more destination terminals and a feedback link margin.

Method and apparatus for determining carrier sense threshold in wireless communication system

A fifth generation (5G) or pre-5G communication system for supporting higher data transmission rate after a fourth generation (4G) communication system, such as long term evolution (LTE) is provided. A method of transmitting data by a transmitting device in a wireless communication system using a shared band includes determining a first length of a next time period for determining a next data transmission in the shared band based on at least one of link information configured with at least two receiving devices, and a measurement value of the transmitting device, determining whether a channel of the shared band is occupied in the next time period, and transmitting next data according to a result of the determinations.

Method for transmitting and receiving data in wireless communication system using shared band, and device therefor

The present invention relates to 5G or pre-5G communication system for supporting a higher data transmission rate after 4G communication system such as LTE. The present invention provides a method and a device for executing a hybrid automatic repeat request (HARQ) through a channel in an unlicensed frequency band. More particularly, a method for executing a HARQ through a channel in an unlicensed frequency band in a terminal of a communication system comprises the procedures of: requesting uplink scheduling; if a first uplink (UL) grant with respect to the scheduling request is received, sensing whether or not a channel is clear; transmitting first uplink data on the basis of whether or not the channel is clear; if negative acknowledge (NACK) with respect to the first uplink grant and a second uplink grant are received, sensing whether or not the channel is clear; and transmitting second uplink data and an indicator, which indicates whether or not the second uplink data transmission is a retransmission, on the basis of whether or not the channel is clear, wherein the indicator, which indicates for retransmission, is determined on the basis of a reference signal (RS) detection failure indicator, of a base station, which is transmitted from the base station together with the second uplink grant.

Method for supporting HARQ in communication system using unlicensed frequency band and device having applied same

The present disclosure relates to 5th generation (5G) or pre-5G communication systems to support a higher data rate than the long term evolution (LTE) or other 4th generation (4G) communication systems. A method for transmitting data in a communication system is provided. The method includes identifying, by a station (STA) communicating with a first access point (AP), a resource for performing communication with a second AP positioned adjacent to the STA based on information regarding a capability of the STA, performing the communication with the second AP using the resource, and transmitting data obtained by performing the communication with the second AP to the first AP. The information regarding the capability includes one of information regarding multiple antennas available on the STA, information regarding a base-band processing unit including the multiple antennas, or information regarding a modem including the multiple antennas and the base-band processing unit.

Method and apparatus for communicating data between station and neighbor access point in communication system

The present disclosure relates to a 5G or pre-5G communication system to be provided in order to support higher data rates after a 4G communication system, such as an LTE system. A method for receiving buffer status information by an access point in a wireless communication system is provided. In the method, a contention sub-slot and a dedicated sub-slot are determined for each station connected to the access point, a data trigger action frame is generated based on a first element including allocation information on the dedicated sub-slot to be used by a related station in a buffer status report (BSR) phase where each of the stations transmits buffer status information to the access point, the generated data trigger action frame is broadcasted to the stations, and a BSR frame transmitted based on the data trigger action frame is received from each of the stations.

Method and apparatus for transmitting and receiving buffer status information in wireless communication system

The present disclosure relates to a pre-5-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4-Generation (4G) communication system such as Long Term Evolution (LTE). Methods and apparatuses are provided for devices in a wireless communication system. Information requesting a channel estimation by at least one second device is transmitted from a first device to the at least one second device. Channel information is received at the first device as feedback from the at least one second device.

Apparatus and method for channel state information feedback in wireless communication system

The present disclosure relates to a pre-5-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4-Generation (4G) communication system such as Long Term Evolution (LTE). A communication method by a cellular base station is provided. A method for performing communication by a cellular base station comprises transmitting information on a set of one or more non-cellular APs associated with the cellular base station to a UE and receiving information on an event triggered based on a measurement on at least one AP in the set from the UE.

Method and apparatus for operation in coexistence environment of cellular, non-cellular, macro and micro networks

A 5-Generation (5G) or pre-5G communication system to support a higher data rate beyond a 4-Generation (4G) communication system such as long term evolution (LTE) is provided. The method for operating resources by a device included in a first network among a plurality of networks in a wireless communication system where the plurality of networks overlap includes transmitting, to terminals included in the first network, at least one of a beacon signal and a request signal requesting resource allocation information related to adjacent devices respectively included in networks adjacent to the first network, receiving the resource allocation information related to the adjacent devices from the terminals, and reserving a resource to be used for communication based on the received resource allocation information related to the adjacent devices.

Method and apparatus for operating resource in wireless communication system

The present disclosure relates to a pre-5-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4-Generation (4G) communication system such as a Long Term Evolution (LTE). A method for operating a resource in a first device in a wireless local area network (WLAN) system supporting a multi-user transmission scheme is provided. The method includes determining a number of resource allocation request messages acceptable at a timing point; and transmitting information related to the number of resource allocation request messages, wherein a resource allocation request message is acceptable if the first device is capable of allocating a resource to a second device that transmits the resource allocation request message at the timing point.

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Seoul, South Korea

Byoung-Hoon Jung