A method and apparatus improves the accuracy of temperature measurements by sampling measurements from a remote sensor, where currents of different current densities are applied to the remote sensor in a time-interleaved fashion. The mold clamping apparatus includes heaters for heating the tie bars and sensors for sensing the temperatures of portions heated by the heaters, and the heaters and the sensors are provided to each of the plurality of tie bars. The method further includes the donor access node using the UE context information to identify data packets that belong to the UE, wherein the data packets are forwarded from the serving relay node to a target relay node.