Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Han Sung Leem

Tae Soo Kwon

Jong Bu Lim

Dong Ho Cho

Dan Keun Sung

Yun Gyu Bae

Byoung Hoon Jung

Woo Geun Ahn

Ki Cheol Nam

Ki Sung Park

Ji Hwan Kim

Hye Jeong Kim

Ji Young Cha

Jung Hoon Ahn

Ju Hee Jang

Jun Keun Yoon

An electronic device is disclosed. The electronic device supporting a low power wide area network (LPWAN) includes a communication circuit to make communication with a base station, a processor electrically connected with the communication circuit, and a memory electrically connected with the processor. The memory may include instructions that, when executed, cause the processor to establish a radio link with the base station by using the communication circuit, to transmit, to the base station, a first message requesting a random access by using the communication circuit, to receive a second message replying to the first message from the base station by using the communication circuit, when a timer is running for uplink transmission timing, and to update an existing timing advance value for the uplink transmission timing, based on a timing advance value included in the second message.

Apparatus and method for controlling uplink transmission timing in internet of things environment

The present disclosure relates to content streaming. An electronic device includes a processor configured to execute an application that communicates with a server using a pre-defined secure protocol. The electronic device also includes both a communication circuit configured to receive content associated with the application through a first network from a server, and a buffer configured to store the received content. The communication circuit determines a state of the buffer, and terminates a session established between the electronic device and the server based on the state of the buffer and signal state of a second network. The communication circuit also establishes a new session between the electronic device and the server through the second network. The communication circuit also measures a data throughput of the second network for the server during a measuring time, and, if the measured data throughput meets a condition, receives the content through the second network.

Network selection method and apparatus therefor

An electronic device that performs a random access procedure based on mobility is provided. The electronic device includes a random access procedure to the same base station while increasing the coverage level when the mobility is low, and may abort the random access procedure when a specified number of preamble transmissions or more is performed and the mobility is high, so that the random access of the electronic device is prevented from being delayed.

Method for random access based on mobility and apparatus thereof

Provided are examples of methods of a vehicular moving relay in a communication system including the vehicular moving relay, a moving terminal, and a macro base station. Also provided is an example of a terminal. The vehicular moving relay may repeatedly transmit data to a vehicular moving terminal without requesting a handover from a macro base station to the vehicular moving relay, using a unique code that is allocated to the vehicular moving terminal from the macro base station.

Communication method of a macro base station, a vehicular moving relay, and a vehicular moving terminal

Provided are a method and system for handing over a mobile terminal between a macro base station and a vehicular base station to secure a communication service of a movable mobile terminal in a wireless communication system supporting a vehicular base station such as a vehicular relay station. The mobile terminal may be handed over by selecting a network or a vehicular base station suitable to a mobility and type of communication.

Method and system for supporting handover between macro base station and vehicular base station

Growing community of inventors

Suwon-si, South Korea

Han Sung Leem