Providing service support extension data with point cloud file data

A point cloud file application method comprising:

• receiving a point cloud file and associated extension information, the point cloud file and the associated extension information having been obtained by a transmitting device by obtaining the point cloud file and extension information corresponding to the point cloud file and then associating the point cloud file and the extension information, wherein the point cloud file comprises point cloud data, and the extension information providing information for a service comprising one of a navigation planning service or a high definition map service;
• and
• performing the service using the point cloud data based on the extension information,
• wherein a correspondence between an item of the associated extension information and an item in the point cloud file is indicated by (i) the item in the point cloud file indicating an index of the item of the associated extension information and (ii) when the item of the extension information is not indexed by any item in the point cloud file, the correspondence is indicated by a file level location of the item of the associated extension information.

A point cloud file transmission apparatus, comprising:

• processing circuitry configured to
• obtain a point cloud file and extension information corresponding to the point cloud file, the point cloud file comprising point cloud data, the extension information providing information for a service comprising one of a navigation planning service or a high definition map service using the point cloud data;
• indicate a correspondence between an item of the extension information and an item in the point cloud file by (i) the item in the point cloud file indicating an index of the item of the extension information and (ii) when the item of the extension information is not indexed by any item in the point cloud file, the correspondence is indicated by a file level location of the item of the extension information;
• associate the point cloud file with the extension information;
• and
• transmit the point cloud file and the extension information to a receiving device, so that the receiving device performs the service using the point cloud data based on the extension information.