Antenna Power Scaling in Fronthaul Lower Layer Split
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsChenguang Lu, Yezi Huang, Miguel Berg, Björn Pohlman
Life of this patent
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Abstract
A method (1700) for antenna power scaling in a fronthaul lower-layer split, LLS, is provided. The method is performed by a baseband unit, BBU (102, 202, 302), for assisting a Radio Unit, RU (104, 204, 304), in scaling a transmit power of one or more antennas when performing beamforming. The method includes transmitting (1702) at least one antenna power scaling factor to the RU for scaling the transmit power of the one or more antennas.
Claims23
A method for antenna power scaling in a fronthaul lower-layer split, LLS, the method performed by a baseband unit, BBU, for assisting a Radio Unit, RU, in scaling a transmit power of one or more antennas when performing beamforming, the method comprising:
- transmitting at least one antenna power scaling factor to the RU for scaling the transmit power of the one or more antennas.
-13. (canceled)
A method by a radio unit, RU, comprising one or more antennas for performing beamforming for a communication between the RU and at least one wireless device, the method comprising:
- receiving, from a baseband unit, BBU, at least one antenna power scaling factor for scaling a transmit power of the one or more antennas.
-28. (canceled)
A baseband unit, BBU, for assisting a Radio Unit, RU, in scaling a transmit power of one or more antennas when performing beamforming, the BBU adapted to:
- transmit at least one antenna power scaling factor to the RU for scaling the transmit power of the one or more antennas.
The BBU of claim 30, further adapted to
- obtain a plurality of beamforming weights, BFWs, for beamforming of a signal to be transmitted to at least one wireless device via the one or more antennas;
- based on the plurality of BFWs, determine the at least one antenna power scaling factor to be applied to scale the transmit power of at least one of the antennas.
A radio unit, RU, comprising one or more antennas for performing beamforming for a communication between the RU and at least one wireless device, the RU adapted to:
- receive, from a baseband unit, BBU, at least one antenna power scaling factor for scaling a transmit power on the one or more antennas.
-56. (canceled)
Dependencies are inferred from the claim text.