Mitsubishi Electric has filed a patent for a positioning system that calculates the approximate position of a mobile station and determines the anchor to be used for positioning based on the zone the mobile station belongs to. The system also acquires positioning information and calculates the position of the mobile station. GlobalData’s report on Mitsubishi Electric gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Mitsubishi Electric, smart climate control systems was a key innovation area identified from patents. Mitsubishi Electric's grant share as of September 2023 was 29%. Grant share is based on the ratio of number of grants to total number of patents.
Positioning system with approximate position calculation and anchor determination
A recently filed patent (Publication Number: US20230319777A1) describes a positioning system that aims to calculate the position of a mobile station. The system consists of several components, including approximate position calculation circuitry, a database, zone judgement circuitry, anchor-to-be-used determination circuitry, positioning information acquisition circuitry, and position calculation circuitry.
The approximate position calculation circuitry is responsible for calculating an approximate position of the mobile station. The database stores information related to the geographical position of the zone in which the mobile station can be present, the anchor to be used for positioning in each zone, and communication parameters necessary for the mobile station to communicate with the anchor or measure a positioning signal from the anchor.
The zone judgement circuitry uses the approximate position of the mobile station and the information stored in the database to determine the zone to which the mobile station belongs. Based on this zone, the anchor-to-be-used determination circuitry determines the appropriate anchor for communication or measurement of a positioning signal.
The positioning information acquisition circuitry communicates with the determined anchor or measures the positioning signal from the anchor to acquire positioning information. This information indicates the positional relationship between the determined anchor and the mobile station. Finally, the position calculation circuitry calculates the precise position of the mobile station based on the acquired positioning information and the information stored in the database.
The patent also mentions different scenarios in which the positioning system may shift to an autonomous mode. This occurs when there are failures in the calculation of the approximate position, judgement of the zone, acquisition of positioning information, or calculation of the position. In this mode, the system observes the broadcast signal of the anchor around the mobile station to gather information such as received power, propagation state, and radio signal specifications. This information is then used to determine the anchor to be used for positioning.
The patent further describes variations in the implementation of the positioning system. It can be mounted entirely on the mobile station or divided between the mobile station and a positioning network device installed on the ground.
In summary, the patent presents a positioning system that utilizes approximate position calculation, zone judgement, anchor determination, positioning information acquisition, and position calculation to accurately determine the position of a mobile station. The system relies on a database to store relevant information and can operate in an autonomous mode when necessary.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
