Assignee: NTT Docomo Inc.

Location: Tokyo, JP
No. of patents: 36

Number	Title	Issue Date
7577425	Method for securing access to mobile IP network Networks consist of administrative domains each including an administrative server and at least one mobility agent deployed therein. The mobility agents offer connectivity to a mobile node via Advertisement messages in a form verifiable by the mobile node. Each Adve...	08/18/2009
7551568	Power mode aware packet communication method and apparatus Packet communication method and system in which a packet destined for a terminal is provided service according to a service table indexed by packet classification and the terminal's power mode. The service table may specify for a connection a predetermined quality o...	06/23/2009
7493137	Mobile station and base station selection scheme The present invention provides a mobile station able to shorten the processing time of selecting a serving base station and able to select an appropriate serving base station with which the mobile station communicates. Mobile phone 40 receives an adver...	02/17/2009
7436854	Transmitter device for controlling data transmission A CPU 41 of a server device 40 measures an elapsed time after transmitting a data segment, and suspends measuring time upon receiving an acknowledgement segment for the data segment. CPU 41 transmits a data segment whose elapsed time has reached...	10/14/2008
7426470	Energy-based nonuniform time-scale modification of audio signals A method for energy based, non-uniform time-scale compression of audio signals includes receiving a frame of data corresponding to an input audio signal and segmenting the data into a plurality of segments. The method further includes estimating a value related to e...	09/16/2008
7406326	Mobile communication system and control station In a mobile communication system 1 comprising a control station 204, a base station 201, and a mobile station 202, in which the control station 204 sets a dedicated channel with the mobile station 202 via the base station	07/29/2008
7403502	Notification equipment, terminal equipment, communication system and communication method A notification equipment comprises a transmission data determination unit configured to determine whether transmission data to be transmitted to a terminal equipment is first transmission data or repeated transmission data, an instruction data generator configured t...	07/22/2008
7397805	Systems and methods for goodput guarantee through adaptive fair queuing Disclosed herein are systems and methods for communicating a number of data flows on a single communications channel. In one embodiment, a method of communicating a number of data flows on a shared communications channel includes the acts of (1) calculating a set of...	07/08/2008
7395073	Method and apparatus for location estimation using region of confidence filtering A method for location estimation employs filtering in both the radio signal domain and the space domain separately. The method filters raw values of the run-time radio signal measurements to reject distorted inputs. A region of confidence (RoC) is formed according t...	07/01/2008
7392483	Transformation of platform specific graphical user interface widgets migrated between heterogeneous device platforms A scalable graphical user interface system may dynamically transform platform specific graphical user interface widgets migrated within an application graphical user interface between any of a plurality of heterogeneous device platforms. The scalable graphical user ...	06/24/2008
7389226	Optimized windows and methods therefore for gradient-descent based window optimization for linear prediction analysis in the ITU-T G.723.1 speech coding standard Primary and alternate optimization procedures are used to improve the ITU-T G.723.1 speech coding standard (the “Standard”) by replacing the Hamming window of the Standard with an optimized window, with two windows, or with two windows and an additional performa...	06/17/2008
7379731	System for managing program applications storable in a mobile terminal Management server 16 may obtain application programs from content server 20 in response to requests of mobile terminal 11. Management server 16 may transmit the obtained application programs to mobile terminal 11 with information c...	05/27/2008
7376097	Method of associating an IP address with a plurality of link layer addresses in a wireless communication network This invention relates generally to a method of associating an IP address with a link layer address in a wireless communication network. The method comprises the steps of assigning an IP address to a plurality of link layer addresses; establishing a link layer conne...	05/20/2008
7374452	Battery accommodating structure and mobile terminal In a battery accommodating structure that has a battery chamber defined by a bottom plate and side walls and is provided with a battery rubber receiving a lower end edge of a battery inserted in the battery chamber, the bottom plate has an opening at a portion oppos...	05/20/2008
7369673	Speaker supporting device and electronic device comprising this speaker supporting device A speaker supporting structure, which includes a speaker supporting device with improved assembly characteristics, and an electronic device comprising this speaker supporting device. The speaker supporting device is a structure which supports a speaker mounted in a ...	05/06/2008
7366524	Using subnet relations for paging, authentication, association and to activate network interfaces in heterogeneous access networks A system and method for using subnet relations to determine paging areas, for performing authentication and association, and to activate access network interfaces in wireless communication devices in a heterogeneous access network. Paging areas are generated using s...	04/29/2008
7363496	Authenticated ID-based cryptosystem with no key escrow A method and system are provided for determining a shared secret between two entities in a cryptosystem. A first random secret is selected that is known to the first entity and unknown to the second entity. A first intermediate shared secret component is determined ...	04/22/2008
7356010	Point coordinator control passing scheme using a scheduling information parameter set for an IEEE 802.11 wireless local area network A communications protocol in a system such as an IEEE 802.11 wireless LAN multi-hop system providing transmission scheduling information is disclosed. The transmission scheduling is formatted within a CF−Poll+Data+SIPS data frame transmitted by the point coordinat...	04/08/2008
7353395	Authenticated ID-based cryptosystem with no key escrow A method and system are provided for determining a shared secret between two entities in a cryptosystem. A first random secret is selected that is known to the first entity and unknown to the second entity. A first intermediate shared secret component is determined ...	04/01/2008
7349538	Hierarchical identity-based encryption and signature schemes Methods are provided for encoding and decoding a digital message between a sender and a recipient in a system including a plurality of private key generators (“PKGs”). The PKGs include at least a root PKG and n lower-level PKG in the hierarchy between the root P...	03/25/2008
7337322	Hierarchical identity-based encryption and signature schemes Methods are provided for encoding and decoding a digital message between a sender and a recipient in a system including a plurality of private key generators (“PKGs”). The PKGs include at least a root PKG and n lower-level PKG in the hierarchy between the root P...	02/26/2008
7321587	Handover resource optimization A method for maintaining a quality of service in a wireless communication network is introduced. A reservation is created in a first data path between a home agent and a first foreign agent for data flow between the home agent and a wireless terminal. When the wirel...	01/22/2008
7315941	Multi-certificate revocation using encrypted proof data for proving certificate's validity or invalidity A certification authority (CA, 120) generates decryption key data (K′Fj) for each set (F) in the complement cover (804) for a plurality of digital certificates. The CA encrypts all or a portion of the validity proof data (cj(...	01/01/2008
7292722	Representation and coding of panoramic and omnidirectional images A method for representing an omnidirectional-like image by capturing an omnidirectional-like image and determining a representation format that is commonly applicable to any image acquisition system that is able to capture the omnidirectional-like image. The capture...	11/06/2007
7286671	Secure network access method The present invention provides network-layer authentication protocols for authenticating mobile client and access router to each other. The present invention uses Router Discovery as a carrier to implement the authentication protocols. In an embodiment of the presen...	10/23/2007
7280839	Wireless communication device having gain error correcting feature It is an object of the present invention to suppress an abrupt gain change and smoothly and highly accurately control transmitted electric power even if the transmitted electric power greatly changes when a closed loop control that crosses the threshold value as the...	10/09/2007
7269445	Method and apparatus for delivering program to storage module of mobile terminal A user identification module (UIM) 12 having a plurality of storage areas that may be built into or mounted in a mobile terminal 11. A contents server 19, upon receipt of a distribution request from the mobile terminal 11, may distribute ...	09/11/2007
7245915	Layer three quality of service aware trigger A method for providing a triggering mechanism in an all-IP wireless communication system. A plurality of communication paths are established between a mobile terminal and a correspondent node to obtain at least one QoS parameter associated with each communication pa...	07/17/2007
7243263	Method for dynamically switching fault tolerance schemes In one aspect of the invention, a method of dynamically switching among a plurality of fault tolerance schemes is provided. The fault tolerance schemes are associated with a fault tolerance mechanism that executes in a distributed system. The method comprises obtain...	07/10/2007
7234111	Dynamic adaptation of GUI presentations to heterogeneous device platforms A system for dynamically adapting a presentation generated with a scalable application to a display screen of any of a plurality of heterogeneous device platforms is disclosed. The system includes a device platform and a transformation module. The device platform is...	06/19/2007
7221961	Wireless telecommunications unit attachable to and detachable from an external unit A wireless telecommunications unit is attachable to and detachable from an external unit such as a personal computer, and has a wireless telecommunications apparatus, a microcontroller, and a memory mechanism. The wireless telecommunications apparatus has an identif...	05/22/2007
7194507	Method and apparatus for setting communication parameter in information terminal A communication parameter delivery server 50b has communication parameters necessary for making each of information terminals 13, 23 and 33 have a dial-up IP connection service. The server 50b delivers the communication para...	03/20/2007
7183951	Method and apparatus for arithmetic coding and termination Methods and apparatuses for performing arithmetic encoding and/or decoding are disclosed. In one embodiment, an arithmetic decoder comprises a sequencer to generate a context identifier for an event of an event sequence, a probability estimator to determine a value ...	02/27/2007
7183874	Casing contained filter A filter is provided which maintains a low insertion loss characteristic of a filter contained in a casing with a very simple construction that the internal wall of the casing is formed by a superconductor. A coplanar waveguide filter 22 comprises a dielectri...	02/27/2007
6782035	Base station apparatus of mobile communication system A base station including a transmitting and receiving amplifier for amplifying CDMA signals exchanged with a mobile station; a radio stage connected to the transmitting and receiving amplifier for carrying out D/A conversion of a transmitted signal that undergoes ba...	08/24/2004
6343218	Transmission power control method, mobile phone, base station, and recording medium A mobile station according to the present invention that is capable of connecting simultaneously to a plurality of base stations comprises a reception radio portion and TPC bit detecting portions, for receiving and detecting TPC bits (transmission power c...	01/29/2002

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Assignee: NTT Docomo Inc.