Enhanced physical downlink control channel scrambling and demodulation reference signal sequence generation
First Claim
Patent Images
1. An apparatus to be employed in an enhance node B (eNB), the apparatus comprising:
- scrambling circuitry to receive a bit sequence that includes downlink control information (DCI) to be transmitted on an enhanced physical downlink control channel (EPDCCH) and to scramble the bit sequence based on a cell identifier to provide a scrambled bit sequence; and
modulating circuitry coupled with the scrambling circuitry to receive the scrambled bits and to modulate the scrambled bits, with a quadrature phase shift keying modulation scheme, to provide a block of complex-valued modulation symbols,wherein the cell identifier is a virtual cell identifier;
the DCI is to be transmitted in a first EPDCCH set;
the virtual cell identifier corresponds to the first EPDDCH set; and
the scrambling circuitry is to scramble the DCI bits based on a scrambling initialization seed cint given by
cint=└
ns/2┘
*29+NIDePDCCH where ns is a slot number within a radio frame and NIDePDCCH is the virtual cell identifier.
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Abstract
Methods, apparatuses, and systems are described to provide enhanced physical downlink control channel scrambling and demodulation reference signal sequence generation.
13 Citations
6 Claims
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1. An apparatus to be employed in an enhance node B (eNB), the apparatus comprising:
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scrambling circuitry to receive a bit sequence that includes downlink control information (DCI) to be transmitted on an enhanced physical downlink control channel (EPDCCH) and to scramble the bit sequence based on a cell identifier to provide a scrambled bit sequence; and modulating circuitry coupled with the scrambling circuitry to receive the scrambled bits and to modulate the scrambled bits, with a quadrature phase shift keying modulation scheme, to provide a block of complex-valued modulation symbols, wherein the cell identifier is a virtual cell identifier; the DCI is to be transmitted in a first EPDCCH set; the virtual cell identifier corresponds to the first EPDDCH set; and the scrambling circuitry is to scramble the DCI bits based on a scrambling initialization seed cint given by
cint=└
ns/2┘
*29+NIDePDCCHwhere ns is a slot number within a radio frame and NIDePDCCH is the virtual cell identifier. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification