Methods for managing neighbor relations and coordinating physical cell identifiers for moving high altitude platform systems

An apparatus, comprising:

• at least one processor;
• and
• at least one memory comprising computer program code,
• the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to:
• receive geolocation information for at least one first network node;
• manage relations of neighbor network nodes of at least one of the apparatus or the at least one first network node;
• and
• resolve physical cell identifier problems using the geolocation information,
• wherein the apparatus comprises a high altitude platform station or flying base station, and wherein the at least one first network node comprises at least one terrestrial base station or at least one high altitude platform station or flying base station.

A computer program embodied on a non-transitory computer-readable storage medium, the computer program comprising program code for controlling a process to execute a process, the process comprising:

• receiving, at a first network node, geolocation information for at least one second network node;
• managing, by the first network node, relations of neighbor network nodes of at least one of the first network node or the at least one second network;
• and
• resolving physical cell identifier problems using the geolocation information,
• wherein the first network node comprises a high altitude platform station or flying base station, and wherein the at least one second network node comprises at least one terrestrial base station or at least one high altitude platform station or flying base station.