Patent ID: 11930417
Assignee: MURATA MACHINERY, LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A travel system, comprising:
a travelling carriage to travel on a predetermined track;
a plurality of access points including a plurality of first access points to wirelessly communicate with the travelling carriage and a plurality of second access points to wirelessly communicate with the travelling carriage in a communication slot different from a communication slot of the plurality of first access points; and
a controller to receive position information from the travelling carriage and transmit a travel instruction to the travelling carriage, via any one of the plurality of access points, the position information indicating a current position of the travelling carriage, and the travel instruction being an instruction to control travel of the travelling carriage; wherein
each of the plurality of first access points is disposed so that a portion of a communication area of the first access point overlaps a communication area of an adjacent first access point;
each of the plurality of second access points is disposed so that a portion of a communication area of the second access point overlaps a communication area of an adjacent second access point;
each of the plurality of first access points is disposed so that at least a portion of the communication area of the first access point overlaps a communication area of any one of the plurality of second access points;
the travelling carriage includes a wireless interface to wirelessly communicate with a first access point among the plurality of first access points, and wirelessly communicate with a second access point among the plurality of second access points when wireless communication with the first access point is not possible; and
each of the communication slots of the plurality of first access points and the plurality of second access points is a predetermined communication slot of a communication channel.