Radio Base Station, Method in a Radio Base Station, Relay Station and Method in a Relay Station

A radio base station, serving a user equipment, for deciding whether a handover request of the user equipment is to be sent to a candidate target network node, wherein the radio base station comprises:

• a processing circuit configured to acquire data-rate performance of a wireless link between the radio base station and the user equipment, to compare the acquired data-rate performance with a data-rate performance threshold value, wherein the data-rate performance threshold value is based on previously determined throughput of a wireless link between at least one user equipment, via a relay node, and the radio base station or a neighboring radio base station, and to decide to send the handover request of the user equipment to the candidate target network node in the event that the acquired data-rate performance is lower than the data-rate performance threshold value.

A relay station, serving a user equipment, for deciding whether a handover request of the user equipment is to be sent to a candidate target network node, wherein the relay station comprises:

• a processing circuit configured to acquire data-rate performance of a wireless link between the relay station and the user equipment, to compare the acquired data-rate performance with a data-rate performance threshold value, wherein the data-rate performance threshold value is based on previously determined throughput of a wireless link between at least one user equipment, via a relay node, and a donor radio base station or another radio base station, and to decide to send the handover request of the user equipment to the candidate target network node in the event that the acquired data-rate performance is lower than the data-rate performance threshold value.