Patent ID: 8902830

Claim:
A method in a base station that operates in a first mode and in a second mode, the method comprising: transmitting, from the base station, synchronization information when the base station operates in the first mode, the first mode being a power saving mode; transmitting, from the base station, Primary Broadcast Channel (PBCH) information, the PBCH information including a first portion of broadcast system information when the base station operates in the first mode; transmitting, from the base station, uplink access configuration information, including signature waveform characteristic information, when the base station operates in the first mode; receiving, at the base station, a signature waveform from a user terminal, the signature waveform having a characteristic based on the uplink access configuration information; and transmitting, from the base station, in response to receiving the signature waveform, a second portion of the system information different than the first portion of the system information, the second portion of the system information being transmitted on a broadcast channel only when the base station operates in the second mode.