First waypoint distance

摘要

A mobile computing device can determine a first waypoint distance that indicates a distance from the device's location within which a first waypoint of a route cannot be located. This distance can be sent to a server as part of a map data request. The distance can be based on a device velocity, a request latency time, an instruction intake time and an instruction reaction time. The request latency time represents the delay from sending a request to receiving route information in response. The instruction intake time represents the time it takes for a user to read or listen to a first waypoint instruction. The instruction reaction time represents the time it takes a user to react to a first waypoint instruction. Route information contains information identifying a first waypoint that is further away from the device position supplied with the request than the first waypoint distance.

主权项

1. A method of requesting a route for a mobile computing device, using a processor, the method comprising:
determining a mobile computing device location and a first waypoint distance, the first waypoint distance indicating a distance, representing an exclusionary zone, from the mobile computing device location within which a first waypoint of a route cannot be located, the first waypoint distance being based at least on a mobile computing device velocity; sending a map data request to a server, the map data request comprising the first waypoint distance and the mobile computing device location; and receiving route information from the server, the route information based on the first waypoint distance, the route information comprising information identifying a received first waypoint that is further away from the mobile computing device location than the first waypoint distance.