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Institution

NTT DoCoMo

About: NTT DoCoMo is a based out in . It is known for research contribution in the topics: Base station & Mobile station. The organization has 4032 authors who have published 8655 publications receiving 160533 citations.


Papers
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Patent
Hiromasa Fujii1, Shigeru Tomisato1, Hirohito Suda1, Tetsushi Abe1, Takefumi Yamada1 
20 Nov 2003
TL;DR: In this article, the authors provided a communication system capable of reducing affect of interference from another system caused by a difference in symbol length in a region where a plurality of systems using different transmission methods are present.
Abstract: There is provided a communication system capable of reducing affect of interference from another system caused by a difference in symbol length in a region where a plurality of systems using different transmission methods are present. A communication system includes a plurality of systems sharing the same frequency band to transmit information symbols. One system (1) has an identification section (109) for identifying the symbol length of an information symbol transmitted from another system (2) and adjustment sections (102, 107) for adjusting the symbol length of the information symbol to be transmitted according to the identified symbol length.

42 citations

Patent
Hirohito Suda1, Shinzo Ohkubo1, Tatsuro Masamura1, Toshiaki Tanaka1, Mitsuru Murata1 
10 Dec 2003
TL;DR: In this paper, the authors proposed a communication system comprised of an RFID configured to transmit predetermined ID information of its own, a server capable of being connected to a cellular communication network, and an aggregation point for aggregating information from the RFID.
Abstract: An object of the present invention is to enable appropriate switching among a plurality of modes including a cellular communication mode and an RFID information receiving function. A communication system is comprised of an RFID configured to transmit predetermined ID information of its own, a server capable of being connected to a cellular communication network, and an aggregation point for aggregating information from the RFID. In the communication system, the aggregation point, which is comprised of a mobile communication terminal or the like, is provided with an ID receiver for receiving ID information from an RFID, and a cellular communication part for performing cellular communication via the cellular communication network. Furthermore, the aggregation point is provided with a new mode controller for receiving a switching signal for switching among a plurality of modes including the cellular communication mode and the RFID information receiving function from the server, and for performing a mode switching control based on the received switching signal.

42 citations

Patent
Takayuki Nakajima1
26 Mar 2002
TL;DR: In this article, a client service terminal (101) transmits a terminal unique ID and an IP address to a mobile terminal (105), the mobile terminal reports to a subscriber system (103) the ID, the IP address, a telephone number, and a production number.
Abstract: A client service terminal (101) transmits a terminal unique ID and an IP address to a mobile terminal (105). The mobile terminal (105) reports to a subscriber system (103) the ID, the IP address, a telephone number, and a production number. The subscriber system (103) performs authentication in accordance with the report. If the user is authenticated, the subscriber system (103), reports to a service gateway (102) a permission to use the received IP address. The service gateway (102) connects the client service terminal (101) to the Internet (104). The subscriber system (103) monitors the connection between the client service terminal (101) and the Internet (104) and charging the user.

42 citations

Patent
Kazuaki Takeda1, Yoshifumi Morihiro1, Hiroki Harada1, Satoshi Nagata1, Kazuki Takeda1 
15 Dec 2014
TL;DR: In this article, a user terminal that can communicate with a radio base station by using a licensed band and an unlicensed band is disclosed, and the user terminal includes a receiving section that receives downlink signals transmitted in both the licensed and the unlicensed bands, a measurement section that measures a downlink signal transmitted in the licensed band, and a control section that controls feedback of a measurement result.
Abstract: A user terminal that can communicate with a radio base station by using a licensed band and an unlicensed band is disclosed. The user terminal includes a receiving section that receives downlink signals transmitted in the licensed band and the unlicensed band, a measurement section that measures a downlink signal transmitted in the unlicensed band, and a control section that controls feedback of a measurement result. The receiving section receives information related to a command for the measurement in the unlicensed band and/or a command for the feedback of the measurement result by using the licensed band.

42 citations

Patent
Masafumi Usuda1, Anil Umesh1
02 May 2006
TL;DR: In this article, a transmission control method for uplink user data in a mobile communication system in which a plurality of HARQ processes is applied to the uplink users' data is presented.
Abstract: A transmission control method for uplink user data in a mobile communication system in which a plurality of HARQ processes is applied to the uplink user data, includes: classifying, at the radio network controller, each HARQ process into any of a scheduled transmission process, a non-scheduled transmission process, or a scheduled and non-scheduled transmission process in which either of the scheduled transmission or the non-scheduled transmission is performed; notifying, at the radio network controller, the classification result to the mobile station; and transmitting, at the mobile station, the uplink user data in each HARQ process to the radio base station using the scheduled transmission or the non-scheduled transmission, based on the notified classification result.

42 citations


Authors

Showing all 4032 results

NameH-indexPapersCitations
Amit P. Sheth10175342655
Harald Haas8575034927
Giuseppe Caire8282540344
Craig Gentry7522239327
Raj Jain6442430018
Karl Aberer6355417392
Fumiyuki Adachi54101015344
Ismail Guvenc5245113893
Frank Piessens5239110381
Wolfgang Kellerer495029383
Yoshihisa Kishiyama4837911831
Ravi Jain481607467
Josef A. Nossek4862310377
Tadao Nagatsuma4743011117
Christian Bettstetter4620411051
Network Information
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202164
2020143
2019240
2018269
2017193
2016173