US Patent 11187546 Bloom filter route encoding

A route is determined comprising a list of route segments to be traveled from the network version starting segment to the network version target segment. Map version agnostic information identifying each segment of the list of route segments is accessed from the network version of the digital map. A map version agnostic identifier is generated for each route segment of the list of route segments based on the accessed map version agnostic information. The map version agnostic identifier for each route segment is coded using at least one coding function to generate at least one coded map version agnostic identifier for each route segment. A bloom filter is generated based on the coded map version agnostic identifiers for each route segment. The bloom filter is provided such that a mobile apparatus receives the bloom filter.