Multi-carrier operation for wireless systems
First Claim
Patent Images
1. A method of a subscriber station (SS) comprising:
- performing network entry in a multi-carrier wireless environment using a primary carrier;
receiving timing information corresponding to the primary carrier;
receiving a first control signaling via the primary carrier, the first control signaling assigning at least one secondary carrier;
transmitting uplink data via the secondary carrier using an uplink transmission timing of the secondary carrier, the uplink transmission timing of the secondary carrier being assigned the same as an uplink transmission timing of the primary carrier; and
modifying the uplink transmission timing or frequency of the secondary carrier after transmitting the uplink data via the secondary carrier, wherein modifying the uplink transmission timing or frequency of the secondary carrier after transmitting the uplink data via the secondary carrier comprises;
measuring a preamble or pilot; and
determining an adjustment of the uplink transmission timing or frequency of the secondary carrier based on the measurement.
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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.
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Citations
23 Claims
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1. A method of a subscriber station (SS) comprising:
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performing network entry in a multi-carrier wireless environment using a primary carrier; receiving timing information corresponding to the primary carrier; receiving a first control signaling via the primary carrier, the first control signaling assigning at least one secondary carrier; transmitting uplink data via the secondary carrier using an uplink transmission timing of the secondary carrier, the uplink transmission timing of the secondary carrier being assigned the same as an uplink transmission timing of the primary carrier; and modifying the uplink transmission timing or frequency of the secondary carrier after transmitting the uplink data via the secondary carrier, wherein modifying the uplink transmission timing or frequency of the secondary carrier after transmitting the uplink data via the secondary carrier comprises; measuring a preamble or pilot; and determining an adjustment of the uplink transmission timing or frequency of the secondary carrier based on the measurement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus comprising:
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a transceiver; and a processor configured to; perform network entry of a subscriber station (SS) in a multi-carrier wireless environment using a primary carrier; receive timing information corresponding to the primary carrier; receive a first control signaling via the primary carrier, the first control signaling assigning at least one secondary carrier; transmit uplink data via the secondary carrier using an uplink transmission timing of the secondary carrier, the uplink transmission timing of the secondary carrier being assigned the same as an uplink transmission timing of the primary carrier; and modify the uplink transmission timing or frequency of the secondary carrier after transmitting the uplink data via the secondary carrier, wherein modifying the uplink transmission timing or frequency of the secondary carrier after transmitting the uplink data via the secondary carrier comprises; measuring a preamble or pilot; and determining an adjustment of the uplink transmission timing or frequency of the secondary carrier based on the measurement. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of a subscriber station (SS) comprising:
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performing network entry in a multi-carrier wireless environment using a primary carrier; receiving timing information corresponding to the primary carrier; receiving a first control signaling via the primary carrier, the first control signaling assigning at least one secondary carrier; initially assigning an uplink transmission timing of the secondary carrier based on an uplink transmission timing of the primary carrier; and prior to transmitting uplink data via the secondary carrier using the uplink transmission timing of the secondary carrier, modifying the uplink transmission timing or frequency of the secondary carrier, wherein modifying the uplink transmission timing or frequency of the second carrier after transmitting the uplink data via the secondary carrier comprises; measuring a preamble or pilot; and determining an adjustment of the uplink transmission timing or frequency of the secondary carrier based on the measurement.
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Specification