Energy efficient base station entering sleep mode

摘要

The basic idea of the present invention is to let the base station enter a low-power, low-radiation cycle, the so called “sleep mode”, when there are no UEs using it and to introduce methods to “wake up” the base station from this state when there is a UE in the vicinity which is allowed to access the base station and which may need it on short notice.

主权项

1. A method in an energy efficient base station (EEBS) connected to a mobile telecommunication network via a concentration gateway, wherein the EEBS is a home base station, the method comprising:
regularly transmitting, during a regular operation mode, a reference signal and system information, wherein the system information comprises a closed subscriber group (CSG) identity (CSG ID); paging, during the regular operation mode, for one or more user equipments (UEs) that belong to a CSG associated with the CSG ID; responsive to receiving no response to the paging by a UE that belongs to the CSG, entering a sleep mode, wherein the home base station transmits the reference signal and the system information less frequently than during the regular operation mode; responsive to a transmission by the home base station during sleep mode, receiving a wake-up command from a UE based on a determination that the sleep mode transmission matches a fingerprint of the home base station; and leaving the sleep mode responsive to the wake-up command.