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US 10,523,300 B2Granted
Beam refinement techniques in millimeter wave systems
AssigneeQUALCOMM Incorporated
InventorsRahul Malik, Srinivas Yerramalli, Tamer Kadous, Kaushik Chakraborty
Life of this patent
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Abstract
Methods, systems, and devices for wireless communications are described that provide for refinement of receive beam beamforming parameters at a user equipment (UE). A UE may transmit two or more signals in an uplink transmission that have different beamforming parameters. A base station receiving the uplink transmission may measure the two or more signals, and identify a first signal of the two or more signals based at least in part on the measuring. The base station may inform the UE of the identified first signal, which the UE may use to set receive beam beamforming parameters for one or more subsequent downlink transmissions.
Claims30
A method for wireless communication, comprising:
- measuring one or more downlink transmission beams from a base station in a beam sweep procedure;
- transmitting an uplink transmission using an uplink resource, wherein the uplink resource is based at least in part on the measuring of the one or more downlink transmission beams, and wherein a first portion of the uplink transmission is associated with first beamforming parameters and a second portion of the uplink transmission is associated with second beamforming parameters, and the first portion of the uplink transmission and the second portion of the uplink transmission are beamformed in different directions, employ different antenna combinations, or a combination thereof;
- receiving an indication from the base station identifying the first portion of the uplink transmission, wherein the indication is based at least in part on the first portion of the uplink transmission and the second portion of the uplink transmission;
- and
- selecting the first beamforming parameters for receiving a subsequent downlink transmission from the base station based at least in part on the indication.
2 more elements
A method for wireless communication, comprising:
- transmitting one or more downlink transmission beams to a user equipment (UE) in a beam sweep procedure;
- receiving an uplink transmission from the UE responsive to one of the one or more downlink transmission beams, the uplink transmission received on an uplink resource and including two or more beamformed signals that are beamformed in different directions, employ different antenna combinations, or a combination thereof, wherein the two or more beamformed signals include a first beamformed signal, wherein the uplink resource is based at least in part on measurement information received from the UE and associated with the one or more downlink transmission beams and wherein a first portion of the uplink transmission is associated with first beamforming parameters and a second portion of the uplink transmission is associated with second beamforming parameters;
- measuring one or more characteristics of each of the two or more beamformed signals of the uplink transmission;
- and
- transmitting an indication of the first beamformed signal to the UE based at least in part on the measuring.
2 more elements
An apparatus for wireless communication, comprising:
- a processor;
- memory in electronic communication with the processor;
- and
- instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
- measure one or more downlink transmission beams from a base station in a beam sweep procedure;
- transmit an uplink transmission using an uplink resource, wherein the uplink resource is based at least in part on the measuring of the one or more downlink transmission beams, and wherein a first portion of the uplink transmission is associated with first beamforming parameters and a second portion of the uplink transmission is associated with second beamforming parameters, and the first portion of the uplink transmission and the second portion of the uplink transmission are beamformed in different directions, employ different antenna combinations, or a combination thereof;
- receive an indication from the base station identifying the first portion of the uplink transmission, wherein the indication is based at least in part on the first portion of the uplink transmission and the second portion of the uplink transmission;
- and
- select the first beamforming parameters for receiving a subsequent downlink transmission from the base station based at least in part on the indication.
6 more elements
An apparatus for wireless communication, comprising:
- a processor;
- memory in electronic communication with the processor;
- and
- instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
- transmit one or more downlink transmission beams to a user equipment (UE) in a beam sweep procedure;
- receive an uplink transmission from the UE responsive to one of the one or more downlink transmission beams, the uplink transmission received on an uplink resource and including two or more beamformed signals that are beamformed in different directions, employ different antenna combinations, or a combination thereof, wherein the two or more beamformed signals include a first beamformed signal, wherein the uplink resource is based at least in part on measurement information received from the UE and associated with the one or more downlink transmission beams and wherein a first portion of the uplink transmission is associated with first beamforming parameters and a second portion of the uplink transmission is associated with second beamforming parameters;
- measure one or more characteristics of each of the two or more beamformed signals of the uplink transmission;
- and
- transmit an indication of the first beamformed signal to the UE based at least in part on the measured one or more characteristics.
6 more elements
Dependencies are inferred from the claim text.