System and method for reducing blind decoding for carrier aggregation
First Claim
1. A method performed by a user equipment ‘
- UE’
that is configured to perform Long Term Evolution ‘
LTE’
carrier aggregation operations, the method comprising;
identifying one carrier as an anchor carrier and at least one other carrier as a non-anchor carrier;
decoding a physical downlink control channel (PDCCH) in a common search space of only the anchor carrier; and
decoding the PDCCH in a UE specific search space of the anchor carrier; and
decoding a PDCCH in a UE specific search space of the at least one non-anchor carrier;
wherein the location of the UE specific search space of the anchor carrier varies pseudo-randomly for different sub-frames.
4 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 grant within a wireless communication system wherein resource grants are received using control channel element (CCE) subsets wherein each CCE subset is a control channel candidate, wherein the UA is configured to decode up to M control channel candidates per time period for single carrier operation, the method comprising the steps of, at the user agent, identifying N control channel candidates that are distributed among C carriers wherein N is less than M×C, attempting to decode each of the N identified control channel candidates to identify at least one of an uplink and a downlink resource grant and where a control channel candidate is successfully decoded, using the one of the uplink grant and the downlink grant to facilitate communication.
11 Citations
24 Claims
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1. A method performed by a user equipment ‘
- UE’
that is configured to perform Long Term Evolution ‘
LTE’
carrier aggregation operations, the method comprising;identifying one carrier as an anchor carrier and at least one other carrier as a non-anchor carrier; decoding a physical downlink control channel (PDCCH) in a common search space of only the anchor carrier; and decoding the PDCCH in a UE specific search space of the anchor carrier; and decoding a PDCCH in a UE specific search space of the at least one non-anchor carrier; wherein the location of the UE specific search space of the anchor carrier varies pseudo-randomly for different sub-frames. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- UE’
-
9. A user equipment (“
- UE”
) comprising;a processor configured to; identify one carrier as an anchor carrier and at least one other carrier as a non-anchor carrier; decode a physical downlink control channel (PDCCH) in a common search space of only the anchor carrier; and decoding the PDCCH in a UE specific search space of the anchor carrier; and decoding a PDCCH in a UE specific search space of the at least one non-anchor carrier; wherein the location of the UE specific search space of the anchor carrier varies pseudo-randomly for different sub-frames. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
- UE”
-
17. A tangible computer program product storing computer readable instructions configured to cause a processor of a user equipment ‘
- UE’
to;identify one carrier as an anchor carrier and at least one other carrier as a non-anchor carrier; only decode PDCCH in a common search space of an anchor carrier to reduce a number of blind decodes; and decoding the PDCCH in a UE specific search space of the anchor carrier; and decoding a PDCCH in a UE specific search space of the at least one non-anchor carrier, wherein the location of the UE specific search space of the anchor carrier varies pseudo-randomly for different sub-frames. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
- UE’
Specification