| 摘要 |
A method comprising, at a mobile station, transmitting a pilot message to a base station in response to determining that no signal has been received at the mobile station within a predetermined time period or that a received signal has been below a predetermined intensity within a predetermined time period, said pilot message comprising a pilot tone sent at reduced bandwidth, and receiving a response from the base station, said response beamsteered towards the receive direction and/or power of the pilot message. |
