Apparatus and method for transmitting measurement restriction and configuration information
AssigneeSony Corporation
InventorHiroaki Takano
Life of this patent
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Abstract
[Object] To enable more appropriate recognition of an interference situation of a directional beam. [Solution] Provided is an apparatus including: an acquisition unit that acquires a weight set for forming a directional beam; and a control unit that multiplies a reference signal for channel quality measurement by the weight set. The weight set is a weight set that is able to be generated from a first weight set for acquiring directivity in a first direction, a second weight set for acquiring directivity in a second direction, and a third weight set for phase adjustment of dual layer multiple-input multiple-output (MIMO). The third weight set is a specific one of a plurality of weight sets for phase adjustment of dual layer MIMO.
Claims15
An apparatus, comprising:
- circuitry configured to
- transmit, to a terminal device, measurement restriction information indicating a measurement restriction of transmission of a channel state information reference signal (CSI-RS), the measurement restriction information including information about a lower limit of received power of a directional beam which is a measurement target, and wherein the information about the lower limit of the received power is information indicating an offset between power of a desired directional beam and the lower limit;
- and
- transmit, to the terminal device, configuration information of a non-zero-power (NZP) CSI-RS and a zero-power (ZP) CSI-RS, wherein
- the configuration information includes at least one of radio resources used to transmit the NZP CSI-RS and ZP CSI-RS and a sequence of the NZP CSI-RS and ZP CSI-RS.
A method performed by a base station in a wireless communications system, the method comprising:
- transmitting, by circuitry of the base station to a terminal device, measurement restriction information indicating a measurement restriction of transmission of a channel state information reference signal (CSI-RS), the measurement restriction information including information about a lower limit of received power of a directional beam which is a measurement target, and wherein the information about the lower limit of the received power is information indicating an offset between power of a desired directional beam and the lower limit;
- and
- transmitting, by the base station to the terminal device, configuration information of a non-zero-power (NZP) CSI-RS and a zero-power (ZP) CSI-RS, wherein
- the configuration information includes at least one of radio resources used to transmit the NZP CSI-RS and ZP CSI-RS and a sequence of the NZP CSI-RS and ZP CSI-RS.
Dependencies are inferred from the claim text.