Systems, methods, and devices for hybrid full-dimensional multiple-input multiple-output
First Claim
1. A UE configured to:
- receive a channel state information reference signal (CSI-RS) from an evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (eNB);
determine channel state information based on the CSI-RS and send the channel state information to the eNB, wherein the channel state information comprises a precoding matrix indicator corresponding to a first precoding matrix, wherein the first precoding matrix comprises a matrix used for closed-loop beamforming (Pd), and wherein Pd comprises a first dimension corresponding to a number of antenna ports and a second dimension corresponding to a number of layers;
receive a UE specific reference (UE-RS) signal and a physical downlink shared channel (PDSCH) signal, wherein the UE specific reference signal is precoded with a second precoding matrix, wherein the second precoding matrix comprises a matrix used for open-loop beamforming (Pc), and wherein Pc comprises a first dimension corresponding to a number of transmitting antennas and a second dimension corresponding to the number of antenna ports;
estimate a UE-RS effective channel comprising the second precoding matrix based on the UE-RS; and
decode data from the PDSCH signal based on the first precoding matrix and the UE-RS effective channel.
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Accused Products
Abstract
According UE is configured to receive a channel state information reference signal (CSI-RS) from an evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (eNB), determine channel state information based on the CSI-RS, and send the channel state information to the eNB. The channel state information includes a precoding matrix indicator corresponding to a first precoding matrix. The UE is also configured to receive a UE specific reference (UE-RS) signal and a physical downlink shared channel (PDSCH) signal. The UE-RS is precoded with a second precoding matrix. The UE estimates a UE-RS effective channel including the second precoding matrix based on the UE-RS and decodes data from the PDSCH signal based on an the first precoding matrix and the UE-RS effective channel.
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Citations
7 Claims
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1. A UE configured to:
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receive a channel state information reference signal (CSI-RS) from an evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (eNB); determine channel state information based on the CSI-RS and send the channel state information to the eNB, wherein the channel state information comprises a precoding matrix indicator corresponding to a first precoding matrix, wherein the first precoding matrix comprises a matrix used for closed-loop beamforming (Pd), and wherein Pd comprises a first dimension corresponding to a number of antenna ports and a second dimension corresponding to a number of layers; receive a UE specific reference (UE-RS) signal and a physical downlink shared channel (PDSCH) signal, wherein the UE specific reference signal is precoded with a second precoding matrix, wherein the second precoding matrix comprises a matrix used for open-loop beamforming (Pc), and wherein Pc comprises a first dimension corresponding to a number of transmitting antennas and a second dimension corresponding to the number of antenna ports; estimate a UE-RS effective channel comprising the second precoding matrix based on the UE-RS; and decode data from the PDSCH signal based on the first precoding matrix and the UE-RS effective channel. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification