Apparatus and method for controlling PTT service by multiplexing call originator and floor arbitrator

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10841972
APP PUB NO 20170048894A1
SERIAL NO

15234997

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Abstract

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A method of Mission Critical Push to Talk (MCPTT) service performed by a mobile terminal includes: generating, at the mobile terminal, a group call announcement for off-network Mission Critical Push to Talk (MCPTT) service, the group call announcement for off-network MCPTT service including information of a period of the group call announcement for off-network MCPTT service; controlling a transceiver to periodically transmit, to one or more mobile terminals, the group call announcement for off-network MCPTT service based on the period; in response to the transmitted group call announcement for off-network MCPTT service, receiving a response from the one or more mobile terminals; and establishing, based on the response from the one or more mobile terminals, a group call with the one or more mobile terminals by setting a direct wireless communication with the one or more mobile terminals.

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Patent Owner(s)

Patent OwnerAddress
KOREA RAILROAD RESEARCH INSTITUTEUIWANG-SI GYEONGGI-DO 16105

International Classification(s)

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  • 2016 Application Filing Year
  • H04W Class
  • 22431 Applications Filed
  • 17407 Patents Issued To-Date
  • 77.61 % Issued To-Date
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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Choi, Sang Won Yongin-si, KR 23 36
Kim, Ju Yeop Seoul, KR 3 11
Kim, Yong Kyu Cheonan-si, KR 20 56
Song, Yong Soo Uiwang-si, KR 3 21

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