HARQ process utilization in multiple carrier wireless communications
First Claim
1. A wireless transmit/receive unit (WTRU), the WTRU comprising:
- a receiver configured to receive a first downlink control information (DCI) format that does not include component carrier information;
the receiver further configured to receive an indication that the WTRU is to receive a second DCI format that includes component carrier information; and
the receiver is further configured to receive a hybrid automatic repeat request (HARQ) transmission via a component carrier determined from the component carrier information included in the second DCI format.
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Accused Products
Abstract
Methods and apparatus utilize hybrid automatic repeat request (HARQ) transmissions and retransmissions that are usable on multiple carriers, i.e. joint HARQ processes. For example, a downlink (DL) shared channel transmission of a joint HARQ process is received on one of the carriers. A first part of an identity of the joint HARQ process is determined by using HARQ process identity data received on a shared control channel. A second part of the joint HARQ process identity is determined using additional information. The joint HARQ process identity is then determined by combining the first part and the second part. A WTRU is provided that is configured to receive the DL shared channel and to make the aforementioned determinations. A variety of other methods and apparatus configurations are disclosed for utilizing joint HARQ processes, in particular in the context of DC-HSDPA.
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Citations
20 Claims
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1. A wireless transmit/receive unit (WTRU), the WTRU comprising:
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a receiver configured to receive a first downlink control information (DCI) format that does not include component carrier information; the receiver further configured to receive an indication that the WTRU is to receive a second DCI format that includes component carrier information; and the receiver is further configured to receive a hybrid automatic repeat request (HARQ) transmission via a component carrier determined from the component carrier information included in the second DCI format. - View Dependent Claims (2, 3, 4, 5)
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6. A method comprising, the method comprising:
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receiving a first downlink control information (DCI) format that does not include component carrier information; receiving an indication that a wireless transmit receive unit (WTRU) is to receive a second DCI format that includes component carrier information; and receiving a hybrid automatic repeat request (HARQ) transmission via a component carrier determined from the component carrier information included in the second DCI format. - View Dependent Claims (7, 8, 9, 10)
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11. A eNodeB, the eNodeB comprising:
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a transmitter configured to transmit a first downlink control information (DCI) format that does not include component carrier information; the transmitter further configured to transmit an indication that the WTRU is to receive a second DCI format that includes component carrier information; and the transmitter further configured to transmit a hybrid automatic repeat request (HARQ) transmission via a component carrier determined from the component carrier information included in the second DCI format. - View Dependent Claims (12, 13, 14, 15)
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16. A wireless transmit/receive unit (WTRU), the WTRU comprising:
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a memory, and a processor, the processor configured to; receive a first downlink control information (DCI) format that does not include component carrier information; receive an indication that the WTRU is to receive a second DCI format that includes component carrier information; and receive a hybrid automatic repeat request (HARD) transmission via a component carrier determined from the component carrier information included in the second DCI format. - View Dependent Claims (17, 18, 19, 20)
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Specification