System and method for sharing a control channel for carrier aggregation
First Claim
1. A method for user equipment (UE) in a wireless communication system, the method comprising:
- receiving a signal indicating a first carrier index associated with a first carrier and a second carrier index associated with a second carrier;
monitoring a first search space including a first group of physical downlink control channel (PDCCH) candidates, and a second search space including a second group of PDCCH candidates, the first search space and the second search space being on the first carrier, wherein the first group of PDCCH candidates is used to transmit resource grants for the first carrier, and the second group of PDCCH candidates is used to transmit resource grants for the second carrier;
receiving a resource grant via at least one PDCCH candidate of the first or second group of PDCCH candidates, the resource grant including a field identifying the first carrier index or the second carrier index; and
determining that the at least one PDCCH candidate is used to transmit resource grants for the first carrier or the second carrier based on priorities of the first carrier and the second carrier, wherein the at least one PDCCH candidate includes an overlapping PDCCH candidate of the first and second groups of PDCCH candidates.
8 Assignments
0 Petitions
Accused Products
Abstract
A method for processing a control channel at a user agent (UA) to identify at least one of an uplink and a downlink resource allocated by a resource grant within a multi-carrier communication system wherein resource grants are specified by control channel element (CCE) subset candidates, the method comprising the steps of identifying the number of configured carriers used to communicate with the access device, based on the number of configured carriers used to communicate with the access device, identifying a number of CCE subset candidates to decode and decoding up to the identified number of CCE subset candidates in an attempt to identify the resource grant.
13 Citations
18 Claims
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1. A method for user equipment (UE) in a wireless communication system, the method comprising:
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receiving a signal indicating a first carrier index associated with a first carrier and a second carrier index associated with a second carrier; monitoring a first search space including a first group of physical downlink control channel (PDCCH) candidates, and a second search space including a second group of PDCCH candidates, the first search space and the second search space being on the first carrier, wherein the first group of PDCCH candidates is used to transmit resource grants for the first carrier, and the second group of PDCCH candidates is used to transmit resource grants for the second carrier; receiving a resource grant via at least one PDCCH candidate of the first or second group of PDCCH candidates, the resource grant including a field identifying the first carrier index or the second carrier index; and determining that the at least one PDCCH candidate is used to transmit resource grants for the first carrier or the second carrier based on priorities of the first carrier and the second carrier, wherein the at least one PDCCH candidate includes an overlapping PDCCH candidate of the first and second groups of PDCCH candidates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. User equipment (UE) in a wireless communication system, the UE comprising:
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a receiver configured to; receive a signal indicating a first carrier index associated with a first carrier and a second carrier index associated with a second carrier; and receive a resource grant via at least one physical downlink control channel (PDCCH) candidate of a first group of PDCCH candidates or a second group of PDCCH candidates, the resource grant including a field identifying the first carrier index or the second carrier index; and a processor configured to; monitor a first search space including the first group of PDCCH candidates, and a second search space including the second group of PDCCH candidates, the first search space and the second search space being on the first carrier, wherein the first group of PDCCH candidates is used to transmit resource grants for the first carrier, and the second group of PDCCH candidates is used to transmit resource grants for the second carrier, and determine that the at least one PDCCH candidate is used to transmit resource grants for the first carrier or the second carrier based on priorities of the first carrier and the second carrier when the at least one PDCCH candidate includes an overlapping PDCCH candidate of the first and second groups of PDCCH candidates. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification