公开(公告)号：US20180242120A1

公开(公告)日：2018-08-23

申请号：US15752113

申请日：2016-08-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yun-Sun BAEK ,  Hyeon-Mok KO ,  Sung-Jin PARK

IPC: H04W4/10 ,  H04L29/06

Abstract: A method and an apparatus for performing direct communication with at least one other user equipment are provided. The method and apparatus comprises upon generation of an event requiring the direct communication, transmitting a floor request, monitoring whether a response to the floor request is received from at least one adjacent UE, if a response to the floor request is not received until the floor request is transmitted a predetermined number of times at a predetermined interval, determining that a transmission right for the direct communication is granted, and if it is determined that the transmission right is granted, transmitting a signal to the at least one other UE by the direct communication.

公开(公告)号：US20230422001A1

公开(公告)日：2023-12-28

申请号：US18461048

申请日：2023-09-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yun-Sun BAEK ,  Hyeon-Mok KO ,  Sung-Jin PARK

IPC: H04W4/10 ,  H04L12/18 ,  H04W12/08 ,  H04W76/18 ,  H04W76/14 ,  H04L9/40 ,  H04W72/30 ,  H04L65/403

CPC classification number: H04W4/10 ,  H04L12/18 ,  H04L12/1822 ,  H04W12/08 ,  H04W76/18 ,  H04W76/14 ,  H04L9/40 ,  H04W72/30 ,  H04L65/4046

Abstract: A method and an apparatus for are provided direct communication with a user equipment. A method performed by an MCPTT client device includes transmitting, to a client device, a floor request message for an off-network group call; starting a timer; restarting the timer in response to the timer expiring before receiving a floor granted message; stopping the timer in response to receiving the floor granted message before the timer expires; retransmitting the floor request message each time the timer expires before receiving the floor granted message until a total number of transmissions reaches a predetermined number; transmitting, to the client device, a floor taken message indicating that the permission to send is granted to the MCPTT client device after transmitting the floor request message the predetermined number of times and the timer expires before receiving the floor granted message; and transmitting first media data to the client device.

公开(公告)号：US20180367240A1

公开(公告)日：2018-12-20

申请号：US16062593

申请日：2016-12-14

Applicant: Samsung Electronics Co., Ltd

Inventor： Duk-Gu SUNG ,  Hyeon-Mok KO ,  Yong-Tae KIM

IPC: H04L1/00 ,  H04L12/26

Abstract: The present disclosure relates to a method and an apparatus for transmitting and receiving data in accordance with a transmission mode in a communication system. A method for transmitting data by a transmitter in a communication system, according to the present disclosure, comprises the steps of: transmitting a probe message to a receiver on the basis of at least one transmission mode of a multicast transmission mode and a unicast transmission mode; receiving a reception report message including status information of a network from the receiver; determining a transmission mode of one of the multicast transmission mode and the unicast transmission mode on the basis of the reception report message; and transmitting the data to the receiver on the basis of the determined transmission mode.