公开(公告)号：US20190075605A1

公开(公告)日：2019-03-07

申请号：US16123246

申请日：2018-09-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yun Gyu BAE ,  Ki Cheol NAM ,  Ki Sung PARK ,  Han Sung LEEM

IPC: H04W76/10 ,  H04W74/08

Abstract: 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.

公开(公告)号：US20190075503A1

公开(公告)日：2019-03-07

申请号：US16125059

申请日：2018-09-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yun Gyu BAE ,  Ki Cheol NAM ,  Ki Sung PARK ,  Han Sung LEEM

IPC: H04W36/30 ,  H04W74/08 ,  H04W72/04 ,  H04W36/00 ,  H04B17/318

Abstract: 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.