Route determination and navigation based on multi-version map regions

An apparatus comprising:

• at least one processor;
• and
• at least one memory including computer program code for one or more programs,
• the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following,
• obtain route request information characterizing a route to be provided to a terminal;
• determine, at least partially based on the route request information, an intermediate route comprising a plurality of link identifiers respectively identifying links in respective current versions of a map region;
• determine a final route by replacing, in the intermediate route, one or more link identifiers by respective indications,
• wherein the one or more link identifiers include attribute information for the links, and wherein each indication of the indications respectively indicates whether or not a link or considered-to-be-suited link corresponding to the link, which is identified by the link identifier replaced by the indication and which is contained in the current version of the map region, is considered to be contained in a non-current-version of the map region available to the terminal, wherein the considered-to-be-suited-link is the link that is considered to be suited to be used for a route guiding process at the terminal;
• and
• outputting the final route.

A non-transitory computer-readable storage medium carrying one or more sequences of one or more instructions which, when executed by one or more processors, cause an apparatus to at least perform the following steps:

• obtaining route request information characterizing a route to be provided to a terminal;
• determining, at least partially based on the route request information, an intermediate route comprising a plurality of link identifiers respectively identifying links in respective current versions of a map region;
• determining a final route by replacing, in the intermediate route, one or more link identifiers by respective indications,
• wherein the one or more link identifiers include attribute information for the links, and wherein each indication of the indications respectively indicates whether or not a link or considered-to-be-suited link corresponding to the link, which is identified by the link identifier replaced by the indication and which is contained in the current version of the map region, is considered to be contained in a non-current-version of the map region available to the terminal, wherein the considered-to-be-suited-link is the link that is considered to be suited to be used for a route guiding process at the terminal;
• and
• outputting the final route.