Back to results
US 8,711,781 B2Granted
Multi-carrier operation for wireless systems
AssigneeBlackBerry Limited
InventorsDong-Sheng Yu, Hosein Nikopourdeilami, Mo-Han Fong
Life of this patent
Estimating the term…
Abstract
A method for a subscriber station to perform network entry in a multi-carrier wireless environment that has a primary carrier and at least one secondary carrier associated with a base station. The method includes sensing a carrier in an area serviced by the base station and determining if the carrier is a primary carrier or a secondary carrier. The method further includes performing the network entry if the determining establishes that the sensed carrier is a primary carrier and not a secondary carrier.
Claims16
A method in a mobile station, the method comprising:
- establishing communication in a multi-carrier wireless communication system using a primary carrier;
- receiving a first control signaling via the primary carrier, the first control signaling assigning at least one secondary carrier;
- performing sleep mode operation, the sleep mode having a sleep window during which the mobile station is not listening for a traffic indication and a listening window during which the mobile station is listening for a traffic indication;
- receiving a traffic indication via the primary carrier during the listening window;
- determining that the traffic indication corresponds to the secondary carrier;
- receiving timing information corresponding to the primary carrier;
- and
- transmitting uplink data via the secondary carrier, the timing of the uplink transmission based on timing information corresponding to the primary carrier.
5 more elements
An apparatus comprising:
- a transceiver;
- and
- a processor configured to:
- establish communication in a multi-carrier wireless communication system using a primary carrier;
- receive a first control signaling via the primary carrier, the first control signaling assigning at least one secondary carrier;
- perform sleep mode operation, the sleep mode having a sleep window during which the mobile station is not listening for a traffic indication and a listening window during which the apparatus is listening for a traffic indication;
- receive a traffic indication via the primary carrier during the listening window;
- and
- determine that the traffic indication corresponds to the secondary carrier;
- receive timing information corresponding to the primary carrier;
- and
- transmit uplink data via the secondary carrier, the timing of the uplink transmission based on timing information corresponding to the primary carrier.
9 more elements
Dependencies are inferred from the claim text.