Blind decoding for an enhanced physical downlink control channel (EPDCCH)
First Claim
1. An apparatus of a user equipment (UE) configured for blind decoding downlink control information (DCI) from an enhanced physical downlink control channel (EPDCCH), the apparatus comprising circuitry configured to:
- receive, from a base station, the EPDCCH that includes the DCI; and
attempt one or more times to decode the DCI from enhanced control channel elements (ECCE) of the EPDCCH from physical resource block (PRB) region candidates in a PRB set using a selected set of enhanced resource element group (EREG) index maps for the ECCE until the DCI is successfully decoded, wherein resource elements (REs) of a PRB pair include a block of symbols mapped in sequence to resource elements on an associated port when the REs of the PRB pair are part of the EREGs assigned for the EPDCCH transmission.
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Accused Products
Abstract
Technology for a user equipment (UE) configured for blind decoding downlink control information (DCI) from an enhanced physical downlink control channel (EPDCCH). The UE can receive, from a base station, the EPDCCH that includes the DCI. The UE can attempt one or more times to decode the DCI from enhanced control channel elements (ECCE) of the EPDCCH from physical resource block (PRB) region candidates in a PRB set using a selected set of enhanced resource element group (EREG) index maps for the ECCE until the DCI is successfully decoded. The resource elements (REs) of a PRB pair can include a block of symbols mapped in sequence to resource elements on an associated port when the REs are part of the EREGs assigned for the EPDCCH transmission.
11 Citations
23 Claims
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1. An apparatus of a user equipment (UE) configured for blind decoding downlink control information (DCI) from an enhanced physical downlink control channel (EPDCCH), the apparatus comprising circuitry configured to:
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receive, from a base station, the EPDCCH that includes the DCI; and attempt one or more times to decode the DCI from enhanced control channel elements (ECCE) of the EPDCCH from physical resource block (PRB) region candidates in a PRB set using a selected set of enhanced resource element group (EREG) index maps for the ECCE until the DCI is successfully decoded, wherein resource elements (REs) of a PRB pair include a block of symbols mapped in sequence to resource elements on an associated port when the REs of the PRB pair are part of the EREGs assigned for the EPDCCH transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus of a user equipment (UE) operable to perform blind decoding downlink control information (DCI) from an enhanced physical downlink control channel (EPDCCH), the apparatus comprising circuitry configured to:
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receive, at the UE from an evolved Node B (eNB), the EPDCCH along with a physical downlink shared channel (PDSCH) in a resource allocation (RA); and attempt, at the UE, one or more times to decode the DCI from enhanced control channel elements (ECCE) of the EPDCCH from a physical resource block (PRB) pair using a selected set of enhanced resource element group (EREG) index mappings for the ECCE until the DCI is successfully decoded, wherein each EREG index mapping is configured for a different aggregation level (AL), wherein rate matching is performed on the PDSCH around the PRB pair including the DCI in the EPDCCH. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. At least one non-transitory machine readable storage medium having instructions embodied thereon for mapping, at a base station, resource elements (RE) to enhanced control channel elements (ECCE) of an enhanced physical downlink control channel (EPDCCH), the instructions when executed perform the following:
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determining, using at least one processor of the base station, a number of ECCE used to transmit downlink control information (DCI); determining, using the at least one processor of the base station, an aggregation level used to transmit the DCI based on the number of ECCE used to transmit the DCI; and mapping, using the at least one processor of the base station, resource elements (RE) to enhanced resource element groups (EREG) of the ECCE assigned to the DCI using an EREG index. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification