Control channel signaling and acquisition for carrier aggregation
First Claim
Patent Images
1. A method implemented by a wireless transmit/receive unit (WTRU) for performing carrier aggregation, the method comprising:
- receiving carrier aggregation information for a second component carrier via a first component carrier, wherein the carrier aggregation information comprises an indication that grants associated with transmissions on the second component carrier will be received via a physical downlink control channel (PDCCH) of the first component carrier;
decoding a PDCCH transmission on the first component carrier;
determining downlink control information applicable to the second component carrier based on the PDCCH transmission from the first component carrier; and
receiving a downlink transmission via the second component carrier using the downlink control information received via the PDCCH transmission included on the first component carrier.
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Abstract
A method and apparatus for handling a control channel for carrier aggregation in wireless communications. The method includes determining which component carrier to listen to, detecting the downlink control channel, processing mapping information related to downlink and uplink transmissions and operating discontinuous reception with respect to carrier aggregation. The method also includes detecting a component carrier, determining the component carrier type and locating the anchor component carrier, if necessary, where the anchor component carrier carries the carrier aggregation information.
100 Citations
30 Claims
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1. A method implemented by a wireless transmit/receive unit (WTRU) for performing carrier aggregation, the method comprising:
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receiving carrier aggregation information for a second component carrier via a first component carrier, wherein the carrier aggregation information comprises an indication that grants associated with transmissions on the second component carrier will be received via a physical downlink control channel (PDCCH) of the first component carrier; decoding a PDCCH transmission on the first component carrier; determining downlink control information applicable to the second component carrier based on the PDCCH transmission from the first component carrier; and receiving a downlink transmission via the second component carrier using the downlink control information received via the PDCCH transmission included on the first component carrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A wireless transmit/receive unit (WTRU) for handling carrier aggregation, comprising:
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a receiver configured to receive carrier aggregation information for a second component carrier via a first component carrier, wherein the carrier aggregation information comprises an indication that grants associated with transmissions on the second component carrier will be received via a physical downlink control channel (PDCCH) of the first component carrier; a processor configured to decode a PDCCH transmission on the first component carrier and determine downlink control information applicable to the second component carrier based on the PDCCH transmission from the first component carrier; and the receiver further configured to receive a downlink transmission via the second component carrier using the downlink control information received via the PDCCH transmission included on the first component carrier. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification