User equipment (ue)-assisted over-the-air (ota) calibration with explicit feedback
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsAndreas NILSSON, Joao VIEIRA, Mattias FRENNE
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Abstract
A method, system and apparatus are disclosed. According to one or more embodiments, a UE configured to communicate with a first network node and a second network node is provided. The UE is configured to: transmit at least a first uplink reference signal, UL-RS, associated with a first UE antenna port for inter-network node calibration, perform measurements of first and second downlink reference signals, DL-RSs, that are received using the first UE antenna port, determine calibration information based on the measurements of the first and second DL-RSs, and report the calibration information for the inter-network node calibration.
Claims32
A user equipment, UE (22), configured to communicate with a first network node (16) and a second network node (16), the UE (22) configured to:
- transmit at least a first uplink reference signal, UL-RS, associated with a first UE antenna port for inter-network node calibration;
- perform measurements of first and second downlink reference signals, DL-RSs, that are received using the first UE antenna port;
- determine calibration information based on the measurements of the first and second DL-RSs;
- and
- report the calibration information for the inter-network node calibration.
A method implemented in a user equipment, UE (22), the UE (22) is configured to communicate with a first network node (16) and a second network node (16), the method comprising
- transmitting (S156) at least a first uplink reference signal, UL-RS, associated with a first UE antenna port for inter-network node calibration;
- performing (S158) measurements of first and second downlink reference signals, DL-RSs, that are received using the first UE antenna port;
- determining (S160) calibration information based on the measurements of the first and second DL-RSs;
- and
- reporting (S162) the calibration information for the inter-network node calibration.
A first network node (16) configured to communicate with a user equipment, UE (22), the first network node (16) configured to:
- receive a first uplink reference signal, UL-RS, associated with a first UE antenna port for inter-network node calibration;
- transmit a first downlink reference signal, DL-RS, for measurement by the UE (22) using the first UE antenna port;
- receive calibration information that is associated with the measurements of the first DL-RS and a second DL-RS, the second DL-RS being associated with a second network node (16);
- and
- perform inter-network node calibration based at least on the calibration information and first UL-RS.
A method implemented by a first network node (16), the first network node (16) being configured to communicate with a user equipment, UE (22), the method comprising:
- receiving (S142) a first uplink reference signal, UL-RS, associated with a first UE antenna port for inter-network node calibration;
- transmitting (S144) a first downlink reference signal, DL-RS, for measurement by the UE (22) using the first UE antenna port;
- receiving (S146) calibration information that is associated with the measurements of the first DL-RS and a second DL-RS, the second DL-RS being associated with a second network node (16);
- and
- performing (S148) inter-network node calibration based at least on the calibration information and first UL-RS.
Dependencies are inferred from the claim text.