Ntt Docomo, Inc.

Yuta Oguma

Hiromasa Umeda

Hideaki Takahashi

Yuki Matsumura

Yuichi Kakishima

Takayuki Furuta

Takuma Takada

Hisashi Matsuoka

A user terminal according to one aspect of the present disclosure includes: a transmitting section that transmits information that indicates which beam correspondence that uses which downlink reference signal is supported; a receiving section that receives spatial relation information that indicates a downlink reference signal having a spatial relation with a sounding reference signal; and a control section that determines a spatial domain filter used to transmit an uplink signal, based on a spatial domain filter used to receive the downlink reference signal.

Terminal, method, base station, and system for controlling SRS transmission

A terminal is disclosed including a processor and a transmitter. The processor includes, in a UECapabilityInformation message, information indicating whether transmission diversity is supported on a per-band basis. The transmitter transmits, to a base station, the UECapabilityInformation message including the information indicating whether transmission diversity is supported on the per-band basis. In other aspects, a communication method and a radio communication system are also disclosed.

Terminal, communication method, and radio communication system

A terminal including: a control unit configured to compare a power reduction total value that is reduced from a maximum transmission power value determined based on a power class and that does not include a power reduction value for adjusting the power class with a predetermined value, and to calculate a lower limit value of a maximum transmission power by setting the power reduction value for adjusting the power class as 0 dB when the power reduction total value is greater than the predetermined value; and a transmission unit configured to perform uplink transmission using a maximum transmission power value equal to or greater than the lower limit value.

Terminal and uplink transmission method

A terminal includes: a control section that generates Capability information including UE Capability for a Power Class; and a transmission section that transmits the Capability information. The Power Class is specified by four items of Max Total Radiated Power (TRP), Max peak Equivalent Isotropic Radiated Power (EIRP), Min peak EIRP, and Spherical coverage EIRP, and an Inter-band-Carrier-Aggregation (CA) specified value of at least one of the Max peak EIRP and the Min peak EIRP for Inter-band CA in which a plurality of bands are used is defined by a method different from a method for a non-Inter-band-CA specified value.

Terminal and communication method

A user apparatus includes a reception unit that receives, from a base station, information requesting a capability report of the user apparatus; a transmission unit that transmits, to the base station, the capability report of the user apparatus; and a control unit that receives a first signal transmitted from the base station, and a second signal transmitted from another base station or a third signal transmitted from the base station, within a maximum receive timing difference associated with a band combination included in the capability report of the user apparatus, wherein the band combination includes a combination of a band of the first signal and a band of the second signal or the third signal, a radio access technology for the first signal differs from that of the second signal, and the radio access technologies for the first signal and for the third signal are the same.

User apparatus and base station apparatus

A terminal includes a transmission unit configured to transmit, to a base station, information indicating whether or not transmission diversity is supported, a reception unit configured to receive, from the base station, information indicating a transmission diversity scheme in a case where transmission diversity is supported, and a control unit configured to switch to a transmission diversity scheme based on the information indicating the transmission diversity scheme, wherein the transmission unit is configured to perform transmission by applying the transmission diversity scheme to which the switch was made.

Growing community of inventors

Tokyo, Japan

Yuta Oguma