Method and apparatus for generating reference signal in analog/digital mixed BF system
First Claim
Patent Images
1. A base station in a wireless communication system, the base station comprising:
- at least one processor configured to identify an analog beamforming (BF) direction;
a digital BF unit configured to generate precoded signals by precoding a plurality of downlink reference signals (DL RSs);
a plurality of radio frequency (RF) chains coupled to the digital BF unit, configured to apply the analog BF direction to the precoded signals; and
a plurality of antenna elements subsets respectively coupled to each of the plurality of RF chains, each of the plurality of antenna elements subsets is configured to transmit the precoded signals on a plurality of subcarriers in the analog BF direction.
0 Assignments
0 Petitions
Accused Products
Abstract
A millimeter radio wave communication system. In a method for operating a base station (BS) in an analog/digital mixed BF system, an analog BF direction is determined. A digital BF precoder is determined for the determined analog BF direction. Digital BF precoding is performed using the digital BF precoder with respect to the determined analog BF direction. A DownLink Reference Signal (DL RS) is transmitted in the analog BF direction on which the digital BF precoding has been performed.
19 Citations
13 Claims
-
1. A base station in a wireless communication system, the base station comprising:
-
at least one processor configured to identify an analog beamforming (BF) direction; a digital BF unit configured to generate precoded signals by precoding a plurality of downlink reference signals (DL RSs); a plurality of radio frequency (RF) chains coupled to the digital BF unit, configured to apply the analog BF direction to the precoded signals; and a plurality of antenna elements subsets respectively coupled to each of the plurality of RF chains, each of the plurality of antenna elements subsets is configured to transmit the precoded signals on a plurality of subcarriers in the analog BF direction. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A terminal in a wireless communication system, the terminal comprising:
-
a plurality of antenna elements subsets configured to receive a plurality of downlink reference signals (DL RSs); a plurality of radio frequency (RF) chains respectively coupled to each of the plurality of antenna elements subsets, the plurality of RF chains are configured to apply an analog beamforming (BF) direction to the plurality of DL RSs; and a digital BF unit coupled to the plurality of RF chains, the digital BF unit is configured to perform a post precoding for each of the plurality of DL RSs, wherein the plurality of DL RSs are received on a plurality of subcarriers in an identified analog BF direction. - View Dependent Claims (8, 9, 10, 11, 12, 13)
-
Specification