NTT DOCOMO, Inc. is the predominant mobile phone operator in Japan. The name is officially an abbreviation of the phrase, "do communications over the mobile network", and is also from a compound word dokomo, meaning "everywhere" in Japanese. Docomo provides phone, video phone , i-mode , and mail services. The company has its headquarters in the Sanno Park Tower, Nagatachō, Chiyoda, Tokyo.Docomo was spun off from Nippon Telegraph and Telephone in August 1991 to take over the mobile cellular operations. It provides 2G PDC cellular services on the 800 MHz band, and 3G FOMA W-CDMA services on the 2 GHz and 800 MHz ) and 1700 MHz ) bands, and 4G LTE services. Its businesses also included PHS , paging, and satellite. Docomo ceased offering a PHS service on January 7, 2008. Wikipedia.
NTT DoCoMo | Date: 2015-09-18
To provide a base station apparatus, mobile terminal apparatus and communication control method for enabling control adapted to interference inside a Heterogeneous network to be performed to support the next-generation mobile communication system, a base station apparatus (
NTT DoCoMo | Date: 2015-05-14
An audio signal transmission device for encoding an audio signal includes an audio encoding unit that encodes an audio signal and a side information encoding unit that calculates and encodes side information from a look-ahead signal. An audio signal receiving device for decoding an audio code and outputting an audio signal includes: an audio code buffer that detects packet loss based on a received state of an audio packet, an audio parameter decoding unit that decodes an audio code when an audio packet is correctly received, a side information decoding unit that decodes a side information code when an audio packet is correctly received, a side information accumulation unit that accumulates side information obtained by decoding a side information code, an audio parameter missing processing unit that outputs an audio parameter upon detection of audio packet loss, and an audio synthesis unit that synthesizes decoded audio from the audio parameter.
NTT DoCoMo | Date: 2015-10-01
In a cellular telecommunications network, a mobile communication system to offload data traffic from base stations to small-node devices, includes a radio base station, a plurality of small-node devices, a macro-base-station-to-the-small-node-device (BS2D) communication section configured to receive a first control-plane message from the radio base station over a BS2D communication link, a small-node-device-to-user-equipment (D2UE) communication section configured to transmit user-plane data to a user equipment over a wireless D2UE communication link established responsive to the first control-plane message, and a center small-node device. The center small-node device includes a buffer section, a backhaul communication section configured to receive the user-plane traffic data from a server over a backhaul link, and is configured to manage D2UE connections between the plurality of small-node devices and the mobile station, buffer data to be transmitted in downlink and uplink for the plurality of small-node devices, and conduct a link adaptation for the D2UE connections.
NTT DoCoMo | Date: 2015-01-02
A video predictive encoding device includes an input module to receive pictures forming a video sequence, and an encoding module to encode the pictures by either intra prediction or inter prediction to generate compressed picture data, and to packetize the compressed image data along with packet header information. The packet header information includes a picture type. The encoding module determines the picture type so as to uniquely indicate whether encoded picture data is used for reference in decoding of another picture.
Moving Picture Encoding Apparatus, Moving Picture Decoding Apparatus, Moving Picture Encoding Method, Moving Picture Decoding Method, Moving Picture Encoding Program, And Moving Picture Decoding Program
NTT DoCoMo | Date: 2015-09-01
An object of the present invention is to increase efficiency of information compression in coding and decoding. A moving picture encoding apparatus