Energy-saving base station and method
First Claim
1. 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.
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Accused Products
Abstract
A wireless communication user terminal obtains uplink access configuration information on a physical downlink control channel (PDCCH) addressed to a plurality of user terminals by processing the PDCCH based on a first system information received from a base station on a physical broadcast channel (PBCH) and based on synchronization information. The terminal sends a signature waveform based on the uplink access configuration information, prior to receiving system information in addition to the first system information, whereby the signature waveform enables the base station to transition from a relatively low power operating mode to a relatively high power operating mode.
18 Citations
15 Claims
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1. 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- transmitting, from the base station, synchronization information when the base station operates in the first mode, the first mode being a power saving mode;
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9. A method for a wireless communication user terminal to enable a base station to transition from a relatively low power operating mode to a relatively high power operating mode, the method comprising:
- receiving, at the user terminal, synchronization information from the base station operating in the relatively low power operation mode;
receiving, at the user terminal, first broadcast system information, on a physical broadcast channel (PBCH);
obtaining uplink access configuration information, including signature waveform characteristic information, in a downlink control information format on a physical downlink control channel (PDCCH) addressed to a plurality of user terminals by processing the PDCCH on a cell-specific search space based on the first broadcast system information and based on the synchronization information;
sending, from the user terminal, a signature waveform having a characteristic based on the uplink access configuration information, prior to receiving second broadcast system information in addition to the first broadcast system information; and
receiving, at the user terminal, the second broadcast system information, the second broadcast system information being received on a broadcast channel only when the base station operates in the relatively high power operating mode. - View Dependent Claims (10, 11, 12, 13, 14, 15)
- receiving, at the user terminal, synchronization information from the base station operating in the relatively low power operation mode;
Specification