公开(公告)号：JP2002118429A

公开(公告)日：2002-04-19

申请号：JP2001253935

申请日：2001-08-24

Applicant: LUCENT TECHNOLOGIES INC

Inventor： TRUNG LY

IPC: H03F1/32 ,  H03G3/30

Abstract: PROBLEM TO BE SOLVED: To provide a signal amplification system generating an amplified signal having reduced distortion by regulating the phase and amplitude in order to reduce the amplitude of distortion at at least one frequency using the upstream signal information in a signal to be amplified. SOLUTION: The distortion reducing system determines at least one frequency for distortion generated from a signal amplifier using upstream signal information, e.g. the carrier frequency in a signal to be amplified. Depending on the amplitude of distortion at at least one frequency, the distortion reducing system performs phase and/or amplitude regulation to reduce the amplitude of distortion. For example, a processing circuit obtains a traffic frequency for forming a signal to be amplified through a feed forward amplifier arrangement. The feed forward amplifier arrangement receives the signal to be amplified on a main signal path and copies the replica of signal for the main signal path and a feed forward path.

公开(公告)号：JP2002116471A

公开(公告)日：2002-04-19

申请号：JP2001241485

申请日：2001-08-09

Applicant: LUCENT TECHNOLOGIES INC

Inventor： JUDY ARTHUR F

IPC: G02F1/35 ,  H01S3/06 ,  H01S3/094 ,  H01S3/30 ,  H04B10/02 ,  H04B10/17 ,  H04B10/18 ,  H04B10/29 ,  H04J14/00 ,  H04J14/02 ,  H04B10/16

Abstract: PROBLEM TO BE SOLVED: To harmonize demand to low power density reducing nonlinear effect with demand to high power density increasing efficiency of a Raman amplifier in a light transmission system. SOLUTION: A Raman amplification light transmission system 80 has a source of light transmission signal having a system wavelength λs and the light transmission signal is connected with one end of first optical fiber 50-1 having a large effective area (that is, Aeff>=70 μm2). Another end of the first optical fiber is connected with second optical fiber 50-2 having a small effective area (that is, Aeff

公开(公告)号：JP2002111740A

公开(公告)日：2002-04-12

申请号：JP2001250222

申请日：2001-08-21

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHEN XIAOBAO X ,  PAPARELLA ANDREA

IPC: H04L12/28 ,  H04L12/56 ,  H04L29/06 ,  H04W4/18 ,  H04W8/26 ,  H04W36/00 ,  H04W36/18 ,  H04W40/36 ,  H04W80/04 ,  H04W84/04 ,  H04W88/14 ,  H04W88/18 ,  H04Q7/22

Abstract: PROBLEM TO BE SOLVED: To provide a method for supporting a seamless hand-off in a mobile communication network. SOLUTION: In a method for distributing a packet of a layer 2 in a mobile communication network of the third generation to a mobile node within a follow-in network, the method comprises the steps of: (A) preparing an address analysis protocol (ARP) entity; (B) setting a home agent (14) within a home network of the mobile node; (C) allocating a c/o address to a mobile node (10); (D) setting a dynamic host construction protocol(DHCP); (E) setting a proxy ARP entity; and (F) notifying the proxy ARP entity of the c/o address of the mobile node and a media access control address (MAC).

公开(公告)号：JP2002095066A

公开(公告)日：2002-03-29

申请号：JP2001205905

申请日：2001-07-06

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MA ZHENGXIANG ,  POLAKOS PAUL ANTHONY

IPC: H04L27/20 ,  H04B1/707 ,  H04L27/36 ,  H04Q7/38

Abstract: PROBLEM TO BE SOLVED: To provide a method for reducing a peak to mean power ratio of a communication system, capable of decreasing the peak to mean power ratio in a wireless communication system, using a wireless protocol using pilot symbols. SOLUTION: The method for reducing peak to mean power ratio of the communication system comprises a step of providing a plurality of code channels, and a step of respectively assigning phase rotation to the plurality of channels. The plurality of channels are placed individually by using the phase rotations. The phase rotations may be multiples of ±π/2 or ±π.

公开(公告)号：JP2002064517A

公开(公告)日：2002-02-28

申请号：JP2001041608

申请日：2001-02-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HENRY MATTHEW ,  BULLMAN WILLIAM R ,  HOLMQVIST RYAN S ,  STRAUSS STEVEN E

IPC: G06F1/32 ,  G06F1/26 ,  H04L12/10 ,  H04L12/28

Abstract: PROBLEM TO BE SOLVED: To provide a method for supplying a link maintenance function in a D3 type cold state of a network device. SOLUTION: In order that a link maintenance module can maintain a power supply state in a cold power mode, a database software type link maintenance module is individually installed in the hardware of the network device as a separated function from a function of a core CPU in the network device. An auxiliary backup power supply supplies power to a database ink maintenance module, and then a minimum power supply other than the power supply supplying power to the center function of the network device can supply power to an individual link maintenance module in the case of a power-down mode. The database link maintenance module receiving power individually is used for a redundant module with respect to a software type data base link maintenance module. As another method, the database link maintenance module receiving power individually is used for an alternative of a conventional software driver.

公开(公告)号：JP2002044852A

公开(公告)日：2002-02-08

申请号：JP2000224133

申请日：2000-07-25

Applicant: FURUKAWA ELECTRIC CO LTD ,  LUCENT TECHNOLOGIES INC

Inventor： MITA KOICHIRO ,  KAMIKO MICHIYASU

IPC: G02B6/24 ,  G02B6/00 ,  H02G15/12 ,  H05K5/02 ,  H05K5/03 ,  H05K5/06

Abstract: PROBLEM TO BE SOLVED: To provide a cable junction box which is easy to check its door if incompletely closed and can avoid incompletely closed door. SOLUTION: This cable junction box has an opening 2a, the main box 2 having a first insert hole 2d for the cable 5, a first free-to-open door 3 attached on the main box to cover the opening, and a second free-to-open door 4 having a second cable insert hole 4d and also attached on the main box. The second door covers the opening watertightly together with the first door. The first door 3 is freely detached or attached on the main box 2. The second door 4 can open or close when the first door 3 is attached on the main box 2, but is hampered to close by a lock handle 3d when the first door 3 is not attached.

公开(公告)号：JP2002044851A

公开(公告)日：2002-02-08

申请号：JP2000224132

申请日：2000-07-25

Applicant: FURUKAWA ELECTRIC CO LTD ,  LUCENT TECHNOLOGIES INC

Inventor： MITA KOICHIRO ,  KAMIKO MICHIYASU

IPC: G02B6/24 ,  G02B6/00 ,  H02G15/12 ,  H05K5/06

Abstract: PROBLEM TO BE SOLVED: To provide an improved watertight cable junction box, considering the physical properties such as the hardness and shape of the packing. SOLUTION: This cable junction box l has the main box 2 and a door 4. A packing 6 is provided on the door 4 to watertightly close the gap between the main box 2 and the door 4. The packing 6 has an inside hollow all along its length or projecting stripes on its surface all through its length but without an inside hollow.

公开(公告)号：JP2002044721A

公开(公告)日：2002-02-08

申请号：JP2001160189

申请日：2001-05-29

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GANDHI ASIF D ,  HUANG JOE ,  IBANEZ MARC BENEDICT ,  SONG LEI ,  THOMAS MATHEW ,  VITEBSKY STANLEY

IPC: H04W72/08 ,  H04Q7/38

Abstract: PROBLEM TO BE SOLVED: To control access to an uplink link so as to prevent increase of failed access of subscriber's terminals to a radio communication system. SOLUTION: To easily maintain the target performance an uplink and a desired service area map of the uplink, and control an access by a subscriber terminal 24 to the radio communication system 11, a radio communication system 11 measures a first and a second performance indicator for the uplink to a base station 10 which the subscriber terminal 24 is searching for so as to access. A blocking threshold is established based on the second performance indicator. The radio communication system 11 determines whether or not to allow access by subscriber terminal 24 based on a comparison between the measured first performance indicator and the established blocking threshold.

公开(公告)号：JP2002044014A

公开(公告)日：2002-02-08

申请号：JP2001169185

申请日：2001-06-05

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GOPALAKRISHNAN NANDU ,  RUDRAPATNA ASHOK N ,  SUNDARAM GANAPATHY SUBRAMANIAN

IPC: H04B7/26 ,  H04L1/00 ,  H04L1/08 ,  H04Q7/38

Abstract: PROBLEM TO BE SOLVED: To identify a message group which can be used for transmitting by using previous messages. SOLUTION: As a message group contains the different number of messages, as a result, the messages from a smaller group can be expressed by using smaller bits than in the messages from a greater group. As the smallest group contains the messages accompanied by the highest possibility to be transmitted, the possibility of using the messages expressed by the smaller number of bits is maximized. The messages from the different groups are transmitted at different power level, and a receiver can determine the message group. As this result, the receiver identifies the messages by using previous messages, the power levels relating to the received messages, and the received message bits.

公开(公告)号：JP2002043449A

公开(公告)日：2002-02-08

申请号：JP2001151776

申请日：2001-05-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DEGANI YINON ,  DUDDERAR THOMAS D ,  TAI KING L

IPC: B81C3/00 ,  B81B7/00 ,  H01L23/02 ,  H01L23/06 ,  H01L31/02

Abstract: PROBLEM TO BE SOLVED: To provide a packaging technology for a MEMS assembly where a MEMS device array is mounted on a silicon wafer platform. SOLUTION: A silicon chamber may is sealed airtightly. By using a package made of only silicon for the MEMS device array, the thermodynamic instability disappears substantially. The mechanical instability is also reduced by using a contact pin array in order to interconnect a silicon supporting substrate for the MEMS device to the next interconnection level. The MEMS device can be detached easily by using the contact pin array for the purpose of replacement or repairing.