Beamspace reciprocity based precoder for pdcch user specific beamforming fallback
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsHamza SOKUN, Amr EL-KEYI
Life of this patent
Estimating the term…
Abstract
A method, system and apparatus are disclosed. A network node is provided which is configured to detect a first beamforming precoder failure associated with a first beamforming precoder used for at least one downlink transmission to a WD, responsive to detecting the first beamforming precoder failure, determine a first fallback beamforming configuration for the WD based on at least one of uplink reference signaling from the WD and a control channel element (CCE) aggregation level associated with the WD, configure the WD with the first fallback beamforming configuration, and transmit a first downlink transmission to the WD according to the first fallback beamforming configuration.
Claims22
A network node configured to communicate with a WD in a wireless communication system, the network node comprising processing circuitry configured to:
- detect a first beamforming precoder failure associated with a first beamforming precoder used for at least one downlink transmission to the WD;
- responsive to detecting the first beamforming precoder failure, determine a first fallback beamforming configuration for the WD based on at least one of uplink reference signaling from the WD and a control channel element aggregation level associated with the WD;
- configure the WD with the first fallback beamforming configuration;
- and
- cause a first downlink transmission to the WD according to the first fallback beamforming configuration.
A method implemented in a network node configured to communicate with a WD in a wireless communication system, the method comprising:
- detecting a first beamforming precoder failure associated with a first beamforming precoder used for at least one downlink transmission to the WD;
- responsive to detecting the first beamforming precoder failure, determining a first fallback beamforming configuration for the WD based on at least one of uplink reference signaling from the WD and a control channel element aggregation level associated with the WD;
- configuring the WD with the first fallback beamforming configuration;
- and
- transmitting a first downlink transmission to the WD according to the first fallback beamforming configuration.
12-20. (canceled)
A WD configured to communicate with a network node in a wireless communication system, the WD comprising processing circuitry configured to:
- cause transmission of a first uplink transmission to the network node, the first uplink transmission enabling the network node to detect a first beamforming precoder failure associated with a first beamforming precoder used for at least one downlink transmission to the WD;
- responsive to the first uplink transmission, receive a first fallback beamforming configuration from the network node, the first fallback beamforming configuration being based on at least one of uplink reference signaling transmitted to the network node and a control channel element aggregation level associated with the WD;
- receive a first downlink transmission from the network node;
- and
- process the first downlink transmission according to the first fallback beamforming configuration.
30-38. (canceled)
Dependencies are inferred from the claim text.