US 12,422,539 B2
Position management server, radio communication system, control circuit, storage medium, and mobile object position managing method
Fumihiro Hasegawa, Tokyo (JP); and Masao Oga, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
Filed on Jun. 7, 2022, as Appl. No. 17/834,467.
Application 17/834,467 is a continuation of application No. PCT/JP2020/009826, filed on Mar. 6, 2020.
Prior Publication US 2022/0299622 A1, Sep. 22, 2022
Int. Cl. G01S 13/46 (2006.01); G01S 13/62 (2006.01)
CPC G01S 13/46 (2013.01) [G01S 13/62 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A position management server being a first position management server in a radio communication system that includes the first position management server to hold first position information indicating a position of a mobile object measured by a first method, and a second position management server to hold second position information indicating the position of the mobile object measured by a second method, the position management server comprising:
a memory to hold the first position information;
communication circuitry to receive the second position information from the second position management server, and transmit the first position information to the second position management server, the second method using a sidelink such that the second position information indicates a relative position of the mobile object measured using the sidelink; and
control circuitry to generate third position information indicating the position of the mobile object by using the second position information and the first position information, and cause the third position information to be held in the memory, wherein
the first position information includes a reliability level time stamp indicating a reliability level at a position of the mobile object and a position information time stamp indicating the position of the mobile object at a timing of measurement of the position of the mobile object by the first method,
the second position information includes a reliability level time stamp indicating a reliability level at a position of the mobile object and a position information time stamp indicating the position of the mobile object at a timing of measurement of the position of the mobile object by the second method, and
the control circuitry includes:
timing adjusting circuitry to make a timing of measurement of the position of the mobile object by the first method and a timing of measurement of the position of the mobile object by the second method consistent with each other; and
reliability level adjusting circuitry to make a reliability level in the first position information and a reliability level in the second position information consistent with each other.