Patent ID: 9491615
Filing Date: 2016-11-08
CPC Classification: H04W

Claim Text:
1. A method for use in a radio communications system including multiple radio base stations and multiple radio terminals, comprising: (a) determining a first positioning reference signal (PRS) for a first cell associated with a first radio base station and further associated with a first cell identifier (PCI); (b) determining a second PRS for a second cell associated with a second radio base station and further associated with a second PCI; (c) obtaining information indicating that the first and second PCIs are the same and that the first and second PRSs are different, wherein the obtained information comprises a first extended cell identifier corresponding to the first base station and a second extended cell identifier corresponding to the second base station, the first extended cell identifier comprising a first set of bits representing the first PCI and a second set of bits representing the first PRS, and the second extended cell identifier comprising a first set of bits representing the second PCI and a second set of bits representing the second PRS; (d) based on that obtained information, determining that there is a collision between the first and second physical cell identifiers; (e) resolving the collision by associating a different, non-conflicting cell identifier to either of the first cell or the second cell.