System and method for enhanced multi-beam operation
AssigneeToyota Jidosha Kabushiki Kaisha
InventorDonald M. Grieco
Life of this patent
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Abstract
A system, method and apparatus for mobile communications including sidelink transmissions is provided. A user equipment (UE) receives one or more messages comprising configuration parameters of reference signals associated with a plurality of uplink beams and a first downlink beam. The UE identifies a plurality of uplink beams associated with the first downlink beam based on a measurement of the reference signals and a corresponding ranking associated with each of the plurality of uplink beams. The UE determines a first plurality of uplink beams that satisfy maximum permissible exposure (MPE) limits and that are not subject to link failure. The UE then transmits uplink data or control information using the first uplink beam with the highest ranking.
Claims34
A communication method for a user equipment (UE) configured to communicate with a base station, the communication method comprising:
- receiving, by the UE from the base station, downlink reference signals associated with a plurality of downlink beams comprising a first downlink beam;
- transmitting, by the UE to the base station, measurement information associated with at least the first downlink beam, wherein the measurement information comprises at least one identifier of the first downlink beam;
- selecting, by the UE, an uplink beam associated with the first downlink beam based on a measurement of the downlink reference signals using a beam correspondence;
- and
- transmitting, by the UE to the base station, uplink data or control information using the uplink beam.
A user equipment (UE) configured to communicate with a base station, the UE comprising:
- reception circuitry configured to receive, from the base station, downlink reference signals associated with a plurality of downlink beams comprising a first downlink beam;
- transmission circuitry configured to transmit, to the base station, measurement information associated with at least the first downlink beam, wherein the measurement information comprises at least one identifier of the first downlink beam;
- and
- selection circuitry configured to select an uplink beam associated with the first downlink beam based on a measurement of the downlink reference signals using a beam correspondence, wherein,
- the transmission circuitry is further configured to transmit uplink data or control information using the uplink beam.
A communication method for a base station configured to communicate with a user equipment (UE), the communication method comprising:
- transmitting, by the base station to the UE, downlink reference signals associated with a plurality of downlink beams comprising a first downlink beam;
- receiving, by the base station from the UE, measurement information associated with at least the first downlink beam, wherein the measurement information comprises at least one identifier of the first downlink beam;
- and
- receiving, by the base station from the UE, uplink data or control information transmitted by using an uplink beam, wherein the uplink beam is associated with the first downlink beam and is selected by the UE based on a measurement of the downlink reference signals using a beam correspondence.
A base station configured to communicate with a user equipment (UE), the base station comprising:
- transmission circuitry configured to transmit, to the UE, downlink reference signals associated with a plurality of downlink beams comprising a first downlink beam;
- and
- reception circuitry configured to receive, from the UE, measurement information associated with at least the first downlink beam, wherein the measurement information comprises at least one identifier of the first downlink beam, wherein
- the reception circuitry is further configured to receive, from the UE, uplink data or control information transmitted by using an uplink beam, wherein the uplink beam is associated with the first downlink beam and is selected by the UE based on a measurement of the downlink reference signals using a beam correspondence.
Dependencies are inferred from the claim text.