Beamformed physical downlink control channels (BPDCCHs) for narrow beam based wireless communication
First Claim
1. An apparatus of a user equipment (UE) operable to perform blind decoding for one or more beamformed physical downlink control channels (B-PDCCHs), the apparatus comprising one or more processors and memory configured to:
- receive, at the UE form one or more transmission points (TPs), one or more symbols corresponding to a downlink (DL) control region of a subframe, wherein the DL control region includes a plurality of control resource blocks (CRBs);
determine, at the UE, a B-PDCCH search space that includes a set of candidate B-PDCCH locations, wherein the candidate B-PDCCH locations are included in the DL control region of the subframe; and
perform, at the UE, blind decoding on the candidate B-PDCCH locations included in the B-PDCCH search space in order to obtain downlink physical control information transmitted form the one or more TPs to the UE via the one or more B-PDCCHs;
wherein the downlink physical control information is transmitted on one or more control channel elements (CCEs) within a set of CRBs, wherein the set of CRBs is form the plurality of CRBs in the DL control region of the subframe;
wherein the set of CRBs includes at least one of a localized CRB set and a distributed CRB set, wherein the localized CRB set is a set of contiguous CRBs in a frequency domain and the distributed CRB set is a set of equally-spaced non-contiguous CRBs in the frequency domain; and
wherein;
the distributed CRB set is associated with a common B-PDCCH, orthe one or more B-PDCCHs, and one or more demodulation reference signals (DMRS) are UE-specifically beamformed with respect to the localized CRB set;
orthe one or more B-PDCCHs and one or more demodulation reference signals (DMRS) with respect to the distributed CRB set are beamformed with beams selected form a predefined set of beams, orthe B-PDCCH search space includes one or more distributed CRB sets or one or more localized CRB sets, wherein;
a defined time period includes the one or more distributed CRB sets or the one or more localized CRB sets, wherein the defined time period includes one subframe;
orthe one or more B-PDCCHs are associated with a signal-layer beamformed scheme, wherein the one or more B-PDCCHs are each associated with a demodulation reference signal (DMRS) antenna port.
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Accused Products
Abstract
Technology for a user equipment (UE) operable to perform blind decoding for one or more beamformed physical downlink control channels (B-PDCCHs) is disclosed. The UE can receive, from one or more transmission points (TPs), one or more symbols corresponding to a downlink (DL) control region of a subframe, wherein the DL control region includes a plurality of control resource blocks (CRBs). The UE can determine a B-PDCCH search space that includes a set of candidate B-PDCCH locations. The candidate B-PDCCH locations can be included in the DL control region of the subframe. The UE can perform blind decoding on the candidate B-PDCCH locations included in the B-PDCCH search space in order to obtain downlink physical control information transmitted from the one or more TPs to the UE via the one or more B-PDCCHs.
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Citations
12 Claims
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1. An apparatus of a user equipment (UE) operable to perform blind decoding for one or more beamformed physical downlink control channels (B-PDCCHs), the apparatus comprising one or more processors and memory configured to:
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receive, at the UE form one or more transmission points (TPs), one or more symbols corresponding to a downlink (DL) control region of a subframe, wherein the DL control region includes a plurality of control resource blocks (CRBs); determine, at the UE, a B-PDCCH search space that includes a set of candidate B-PDCCH locations, wherein the candidate B-PDCCH locations are included in the DL control region of the subframe; and perform, at the UE, blind decoding on the candidate B-PDCCH locations included in the B-PDCCH search space in order to obtain downlink physical control information transmitted form the one or more TPs to the UE via the one or more B-PDCCHs; wherein the downlink physical control information is transmitted on one or more control channel elements (CCEs) within a set of CRBs, wherein the set of CRBs is form the plurality of CRBs in the DL control region of the subframe; wherein the set of CRBs includes at least one of a localized CRB set and a distributed CRB set, wherein the localized CRB set is a set of contiguous CRBs in a frequency domain and the distributed CRB set is a set of equally-spaced non-contiguous CRBs in the frequency domain; and wherein; the distributed CRB set is associated with a common B-PDCCH, or the one or more B-PDCCHs, and one or more demodulation reference signals (DMRS) are UE-specifically beamformed with respect to the localized CRB set;
orthe one or more B-PDCCHs and one or more demodulation reference signals (DMRS) with respect to the distributed CRB set are beamformed with beams selected form a predefined set of beams, or the B-PDCCH search space includes one or more distributed CRB sets or one or more localized CRB sets, wherein; a defined time period includes the one or more distributed CRB sets or the one or more localized CRB sets, wherein the defined time period includes one subframe;
orthe one or more B-PDCCHs are associated with a signal-layer beamformed scheme, wherein the one or more B-PDCCHs are each associated with a demodulation reference signal (DMRS) antenna port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. At least one non-transitory machine readable storage medium having instructions embodied thereon for performing blind decoding at a user equipment (UE), the instructions when executed perform the following:
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receiving, using one or more processors at the UE, a subframe from one or more transmission points (TPs) that includes a downlink (DL) control region of a subframe, wherein the DL control region includes a plurality of control resource blocks (CRBs); determining, using the one or more processors at the UE, a B-PDCCH search space that includes a set of candidate B-PDCCH locations, wherein the candidate B-PDCCH locations are included in the DL control region of the subframe; and performing, using the one or more processors at the UE, blind decoding on the candidate B-PDCCH locations included in the B-PDCCH search space in order to obtain downlink physical control information transmitted from the one or more TPs to the UE via the one or more B-PDCCHs, wherein the downlink physical control information is transmitted on one or more control channel elements (CCEs) within a set of CRBs, wherein the set of CRBs is from the plurality of CRBs in the DL control region of the subframe wherein the set of CRBs includes at least one of a localized CRB set and a distributed CRB set, wherein the localized CRB set is a set of contiguous CRBs in a frequency domain and the distributed CRB set is a set of equally-spaced non-contiguous CRBs in the frequency domain; wherein; the one or more B-PDCCHs and one or more demodulation reference signals (DMRS) are UE-specifically beamformed with respect to the localized CRB set;
orthe one or more B-PDCCHs and one or more DMRS with respect to the distributed CRB set are beamformed with beams selected form a predefined set of beams. - View Dependent Claims (10, 11, 12)
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Specification