Methods in base stations, base stations, computer programs and computer program products

摘要

A method in a first base station having a first coverage area at least partly overlapping with a second coverage area of a second base station, the first base station operating within a first transmission power range and the second base station operating within a second transmission power range. The method includes determining radio link quality of a user equipment (UE1) connected to the first base station and being located in an adjustable extended coverage range of the second base station; requesting from the second base station, interference related measurements for unused physical channels or for physical channels at least partially overlapping with physical channels used by UE1 and having the radio link quality falling below a threshold value; and deciding for UE1, based on the interference related measurements, whether a handover to the second base station should be performed.

主权项

1. A method in a first base station serving a first cell having a first coverage area at least partly overlapping with a second coverage area of a second cell served by a second base station, the first base station operating within a first transmission power range and the second base station operating within a second transmission power range, the first transmission power range having transmission power levels being higher than transmission power levels of the second transmission power range, the method comprising the steps of:
determining whether a user equipment (UE1) connected to the first base station is located in an adjustable extended coverage range of the second base station; and when the user equipment (UE1) is located in the adjustable extended coverage range of the second base station, individually evaluating the user equipment (UE1) for handover to the second base station by:
determining radio link quality of a physical channel utilized by the user equipment (UE1) to connect to the first base station;requesting and receiving from the second base station, interference related measurements for physical channels, used or unused by the second base station, that at least partially overlap with the physical channel used by the user equipment (UE1) to connect to the first base station;detecting that the radio link quality of the physical channel used by the user equipment (UE1) to connect to the first base station has fallen below a threshold value thus indicating poor radio link quality to the first base station; anddeciding for the user equipment (UE1) connected to the first base station, based on the user equipment (UE1) being located in the adjustable extended coverage range of the second base station and based on the interference related measurements received from the second base station, whether a handover to the second base station should be performed.