E-UTRAN and handover

摘要

The present invention relates to a method, a base station and an interface for handover in a wireless communication network. Handover is initiated when the signal quality falls below a predetermined value. Random access serves as an uplink procedure to enable the UE to make handover from a first base station (eNodeB) to a suitable second base station (eNodeB). In the present invention, random access parameters are exchanged between second and first base station before said first base station signals said random access parameters to said user equipment.

主权项

1. A method of operating a wireless communication network which includes a source base station and a target base station, the method comprising:
exchanging between the source base station and the target base station a random access channel (RACH) power control parameter to be used by a user equipment for determining a transmission power with which the user equipment transmits a RACH transmission; the user equipment using the RACH power control parameter for requesting access to the wireless communications network; and wherein the exchange between the source base station and the target base station comprises the target base station sending the RACH power control parameter to the source base station before the source base station signals a random access parameter to the user equipment in conjunction with a handover of the user equipment to the target base station.