US Patent 11915538 Trilateration with ultra-wideband anchors

A computer includes a processor and a memory, and the memory stores instructions executable to determine a currently activatable feature on a vehicle from a plurality of features; establish negotiations between each of a plurality of Ultra-Wideband (UWB) anchors of the vehicle and at least one mobile device; select a search strategy based on the currently activatable feature; upon selecting the search strategy, during a search iteration, determine distance data to at least one mobile device from a subset of UWB anchors, and inhibit a remainder of the UWB anchors other than the subset; perform a trilateral calculation on the distance data for the mobile device; and actuate a component of the vehicle according to the currently activatable feature based on a result of the trilateral calculation.