Nippon Telegraph and Telephone Corporation

Micron Technology Incorporated

Takayoshi Tashiro

Kenji Miyamoto

Jun Terada

Shigeru Kuwano

Kenta Ito

Manabu Kubota

Haruka Nagoshi

Shun Morishima

Toshinori Hanano

Satoshi Shimazu

Masayoshi Sekiguchi

Tomoaki Yoshida

Kazuyoshi Yuki

A communication apparatus includes a communication unit, a power supply unit, a temperature monitoring unit, and a control unit. The communication unit communicates with an additional apparatus. The power supply unit supplies power to components mounted in the communication apparatus. The temperature monitoring unit monitors a temperature in the communication apparatus to detect presence or absence of a temperature abnormality. In a case where the temperature monitoring unit detects the temperature abnormality, the control unit performs power supply stop processing of stopping the power supply from the power supply unit to at least some of the components. Furthermore, the control unit stops or decreases communication of the communication unit in a case where the temperature monitoring unit detects the temperature abnormality.

Communication apparatus and temperature monitoring method

A communication apparatus includes a plurality of devices, each of the plurality of devices includes a monitoring unit configured to monitor at least one other device to detect an error that has occurred in the other device, and each of the plurality of devices is monitored by at least one other device.

Communication apparatus and error detection method

A construction of integrated circuitry comprises a structure comprising conductive material having insulative material there-above. The conductive material and the insulative material respectively have opposing sides in a vertical cross-section. A first insulating material is laterally outward of the opposing sides of the conductive material in the vertical cross-section. A second insulating material is laterally outward of the first insulating material in the vertical cross-section. The second insulating material is of different composition from that of the first insulating material. The second insulating material laterally covers a lower portion of the opposing sides of the insulative material in the vertical cross-section. The second insulating material does not laterally cover an upper portion of the opposing sides of the insulative material in the vertical cross-section. A third insulating material is laterally outward of the second insulating material in the vertical cross-section. The third insulating material is of different composition from that of the second insulating material. The third insulating material laterally covers the lower portion and the upper portion of the opposing sides of the insulative material in the vertical cross-section.

Construction of integrated circuitry and a DRAM construction

A base station apparatus is provided with at least one remote unit apparatus each including at least one antenna, and a central unit apparatus connected to each remote unit apparatus via a transmission path. The antenna provided in the remote unit apparatus receives a transmission signal wirelessly transmitted from at least one wireless terminal each including at least one antenna. The remote unit apparatus includes a channel estimation unit that estimates channel information between the antenna of the wireless terminal and the antenna of the remote unit apparatus, using a reception signal received by the antenna provided in the remote unit apparatus, a likelihood calculation unit that calculates likelihood of each transmission signal included in the reception signal, for each antenna provided in the remote unit apparatus, using the channel information estimated by the channel estimation unit, and an inter-unit transmission unit that transmits likelihood information calculated by the likelihood calculation unit to the central unit apparatus. The central unit apparatus is provided with an inter-unit receiving unit that receives the likelihood information transmitted from the inter-unit transmission unit, and a signal detection unit that combines the likelihood information received by the inter-unit receiving unit, and outputs a signal corresponding to each transmission signal transmitted from the wireless terminal, using combined likelihood information.

Base station apparatus, wireless communication system, and communication method for uplink coordinated multi-point transmission and reception with intra-phy split base station architecture

A base station apparatus includes at least one remote unit apparatus including at least one antenna; and a central unit apparatus connected to each remote unit via a transmission path. The remote antenna receives a wireless transmission signal from at least one wireless terminal including at least one antenna. The remote unit includes a channel estimation unit functioning between the terminal antenna and the remote antenna, using a reception signal received by the remote unit antenna; a reception signal processing unit that detects a reception signal corresponding to the transmission signal, using the channel information estimated by the channel estimation unit; a decoding unit that decodes each signal detected by the reception signal processing unit; and an inter-unit transmission unit that transmits each signal decoded by the decoding unit to the central unit. The central unit is provided with an inter-unit receiving unit and a signal selection unit.

Base station apparatus, wireless communication system, and communication method

Growing community of inventors

Yokosuka, Japan

Takayoshi Tashiro