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1.发明专利
公开(公告)号：JP2006319997A
公开(公告)日：2006-11-24
申请号：JP2006157032
申请日：2006-06-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONT , HUANG CHING YAO , KOO YUEN-YIN , SHEN-DE-LIN , WEAVER CARL F
Abstract: PROBLEM TO BE SOLVED: To provide a procedure for a handdown or a handoff of a mobile station moving between adjacent cells of a wireless communication system, in particular, a procedure of a handdown and a handoff to be triggered based on a loss of a propagation path between a mobile station and a base station serving that mobile station at present. SOLUTION: The disclosed method comprises steps of: radiating a control signal at a known transmit power level from a base station over its cell; determining a receive power level threshold for the control signal to a mobile station, according to the transmit power level and a tolerable path loss for signal links between the base station and the mobile station; and triggering a handdown or a handoff after deriving the receive power level of the control signal at the mobile station, and determining that the receive power level is less than the receive power level threshold. COPYRIGHT: (C)2007,JPO&INPIT
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2.发明专利
公开(公告)号：JP2006222970A
公开(公告)日：2006-08-24
申请号：JP2006031880
申请日：2006-02-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ACHILLES GEORGE KOGIANTIS , LEE JUNG A , OZAROW LAWRENCE HOWARD
Abstract: PROBLEM TO BE SOLVED: To provide a radio communication system (20) which includes using a plurality of antennas (30, 32) in order to perform simultaneous transmission to a plurality of mobile stations (24, 26). SOLUTION: A distributed multiple antenna scheduling (DMAS) technique includes selecting the plurality of mobile stations which receive at least simultaneous transmission on at least one selected subcarrier from the inside of a carrier bandwidth having orthogonal frequency division multiplexing (OFDM). In a disclosed embodiment, the plurality of mobile stations are selected for each subcarrier in the carrier bandwidth. The embodiment includes grouping the subcarriers into a subset together in order to reduce complicatedness of calculation for determining which mobile station should be selected for the simultaneous transmission. COPYRIGHT: (C)2006,JPO&NCIPI
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公开(公告)号：JP3605132B2
公开(公告)日：2004-12-22
申请号：JP1374094
申请日：1994-02-07
Inventor： ローゼンクランツ ヴェルナー
IPC: H03L7/085
CPC classification number: H03L7/085
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公开(公告)号：JP2003256223A
公开(公告)日：2003-09-10
申请号：JP2002061211
申请日：2002-03-06
Applicant: NTT DOCOMO INC , LUCENT TECHNOLOGIES INC
Inventor： SATO YASUSHI , EGUCHI YASUHISA , DANIEL A BERNET , FRAN PANKEN , BENNETT ANDREW JONATHAN
IPC: G06F9/54
Abstract: PROBLEM TO BE SOLVED: To provide a service controller and a service control method in an Open API system in which a plurality of service applications are simultaneously received by a telecom carrier network regardless of the service start conditions of those applications. SOLUTION: A service control system 10 stores competing service start condition registration/change/deletion requests received from an Open API client in a memory, and analyzes the service start condition registering states from already stored service start condition registration/change/deletion requests. The received requests are compared with the service start condition registering states at that point of time so that the unchanged service start condition part, the service start condition part to be added, and the service start condition part to be deleted can be discriminated from each other, and the service start condition registration/change/deletion requests can be configured based on the discrimination, and noticed to an Open API server 11. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2003234641A
公开(公告)日：2003-08-22
申请号：JP2003007039
申请日：2003-01-15
Applicant: LUCENT TECHNOLOGIES INC
Inventor： FRATTI ROGER A , LOPATA DOUGLAS D
IPC: H03H19/00
Abstract: PROBLEM TO BE SOLVED: To implement circuits with switched capacitors, such as a ladder filter, so that they can be continuously tuned. SOLUTION: In an integrated circuit with the switched capacitor, the switched capacitor is implemented as a DC-isolated variable capacitor. The DC-isolated variable capacitor is implemented as a T-structure having three capacitors in which one of the three capacitors is implemented with a buffer amplifier configured to receive a control signal and to apply a buffered control signal to an active device having a capacitance that is dependent on the level of the buffered control signal. In one embodiment, the capacitor C 2 of the T-structure is implemented using a voltage-controlled buffer 402 and a varactor diode 404. The buffer 402 is a high-impedance output buffer that provides isolation and preconditions and/or scales a control voltage. COPYRIGHT: (C)2003,JPO
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Patent Agency Ranking
公开(公告)号：JP2003188854A
公开(公告)日：2003-07-04
申请号：JP2002282147
申请日：2002-09-27
Applicant: LUCENT TECHNOLOGIES INC
Inventor： AHMED WALID , DAS SANTANU KUMAR , FREIBERG LORENZ FRED , GROGAN JOHN G , PAN SI MING
Abstract: PROBLEM TO BE SOLVED: To provide a method of detecting the format of received information without requiring to use TFCI. SOLUTION: The method detects the format of the received information by detecting the format of the guide channel of a communication system. The format of the other channel of the communication system is determined by using the format of the detected guide channel by utilizing a lookup table or another mapping technique. Consequently, it is possible to detect the format of the received information without requiring to use TFCI information. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2003188852A
公开(公告)日：2003-07-04
申请号：JP2002298527
申请日：2002-10-11
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DAS ARNAB , KHAN FAROOQ ULLAH
Abstract: PROBLEM TO BE SOLVED: To provide a hybrid transmission method for wireless communications. SOLUTION: A communication channel is divided into a plurality of time slots of equal duration and each of the time slots is further sub-divided into multiple sub-slots. In one embodiment, the communication channel is divided into time slots according to a TDMA (time division multiple access) scheme. Each time slot is then further code-multiplexed into a plurality of sub-slots according to a CDMA (code division multiple access) scheme. Each of the sub- slots is therefore capable of carrying a separately coded transmission within the communication channel, so that multiple simultaneous transmissions can occur in any given time slot. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2003179976A
公开(公告)日：2003-06-27
申请号：JP2002271572
申请日：2002-09-18
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BYERS CHARLES CALVIN , HECK JOHN FREDERICK , HINTERLONG STEPHEN J
Abstract: PROBLEM TO BE SOLVED: To provide a method and an apparatus for automatically selecting an alert type based on the location of a cellular phone. SOLUTION: The method of automatically selecting the alert type for a mobile electronic device comprises the steps of (A) determining the location of the mobile electronic device, and (B) based on the location information, determining an appropriate alert type for the mobile electronic device. When the cellular phone is located in a restaurant, a theater or a place like that, the alert type is changed to a silent mode (vibration mode), and when the cellular phone leaves the place, the alert type is changed back to a loud audible alert mode. In the loud audible alert mode, the volume becomes larger or smaller depending on the surrounding environment. COPYRIGHT: (C)2003,JPO
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9.发明专利
公开(公告)号：JP2003177335A
公开(公告)日：2003-06-27
申请号：JP2002272979
申请日：2002-09-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KURCZYNSKI PETER , TYSON JOHN A
Abstract: PROBLEM TO BE SOLVED: To disclose an adaptive optics system whereby at least one mirror in the system is manipulated using electrostatic force to selectively attract or repel a portion of the mirror to or from a particular electrode, respectively. SOLUTION: This attraction or repulsion is accomplished by mechanically coupling a bound charge layer of dielectric material to at least one surface of the mirror and then placing a voltage across an electrode in an array of electrodes positioned near that mirror. The charge in the dielectric material combined with a suitable electric field makes it possible to attract portions of the mirror in one instant and then, by changing the sign on the voltage placed across the electrode, to repel those same portions in the next instant. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2003162492A
公开(公告)日：2003-06-06
申请号：JP2002234626
申请日：2002-08-12
Applicant: LUCENT TECHNOLOGIES INC
Inventor： TORABI MOHAMMED
Abstract: PROBLEM TO BE SOLVED: To provide a virtual reality system and a method enabling a physical environment to virtually exist in real time at any place. SOLUTION: A virtual reality system for facilitating setting and executing of a virtual reality episode by receiving virtual reality data obtained by a virtual reality environment (VRE) user device and transmitting via a network the virtual reality data to other virtual reality data component capable of displaying the virtual reality data. The setting and executing of the virtual reality episode is generated in real time so that the user can participate in the episode showing a currently arising event in the environment. The VRE user device comprises a wireless device by which one or more movable users at a plurality of positions can participate in the virtual reality episode at a time. COPYRIGHT: (C)2003,JPO
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