User apparatus and uplink control information bit width determination method
AssigneeNtt Docomo, Inc.
InventorsHideaki Takahashi, Kazuaki Takeda
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Abstract
A user apparatus configured to perform communication with a base station in a mobile communication system that supports downlink spatial multiplexing, including: transmission means configured to transmit capability information of the user apparatus to the base station; reception means configured to receive configuration information from the base station; bit width determination means configured, if a parameter indicating a transmission mode corresponding to the downlink spatial multiplexing and predetermined additional information are received as the configuration information, to determine a bit width of a rank indicator based on the predetermined additional information.
Claims3
A user apparatus configured to perform communication with a base station in a mobile communication system that supports downlink spatial multiplexing, comprising:
- a transmission unit configured to transmit capability information of the user apparatus to the base station;
- a reception unit configured to receive configuration information from the base station;
- a bit width determination unit configured, if a parameter indicating a transmission mode corresponding to the downlink spatial multiplexing and predetermined additional information are received as the configuration information, to determine a bit width of a rank indicator based on the predetermined additional information,
- wherein the predetermined additional information is a maximum number of layers transmitted from the base station as information to be used for determining a bit width of the rank indicator.
(canceled)
An uplink control information bit width determination method executed by a user apparatus configured to perform communication with a base station in a mobile communication system that supports downlink spatial multiplexing, comprising:
- a transmission step of transmitting capability information of the user apparatus to the base station;
- a reception step of receiving configuration information from the base station;
- a bit width determination step of, if a parameter indicating a transmission mode corresponding to the downlink spatial multiplexing and predetermined additional information are received as the configuration information, determining a bit width of a rank indicator based on the predetermined additional information,
- wherein the predetermined additional information is a maximum number of layers transmitted from the base station as information to be used for determining a bit width of the rank indicator.
Dependencies are inferred from the claim text.