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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
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.
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公开(公告)号：JP2002027538A
公开(公告)日：2002-01-25
申请号：JP2001165980
申请日：2001-06-01
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RUDRAPATNA ASHOK N , ZEGER LINDA MARLENE
Abstract: PROBLEM TO BE SOLVED: To dynamically save the electric power of a base station by monitoring the potential interference traffic of an adjacent base station and scheduling high-data-speed transmission according to it. SOLUTION: A method for saving the electric power source in a cellular telecommunication system and accordingly increasing the total throughput of the base station is disclosed. Signal intensity received from the adjacent base station is compared to the reference signal intensity. Electrical power is saved by performing scheduling at the time when the intensity of the signal received from a high-data-speed portable machine is lower than the reference signal intensity.
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3.发明专利
公开(公告)号：JP2003198382A
公开(公告)日：2003-07-11
申请号：JP2002314014
申请日：2002-10-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RUDRAPATNA ASHOK N , SHARMA NARESH
Abstract: PROBLEM TO BE SOLVED: To provide a coding/decoding system for increasing a data transmission rate (throughput) by using a plurality of antennas. SOLUTION: The coding/decoding system comprises a supply apparatus for receiving data and for generating N data streams (A), N encoders for receiving each data stream in N data streams and for generating coded data streams (B), and a multi-input/multi-output MIMO encoder for coding N data streams into M data streams for transmitting from the N antennas (C). COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2002319922A
公开(公告)日：2002-10-31
申请号：JP2002039564
申请日：2002-02-18
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GOPALAKRISHNAN NANDU , RUDRAPATNA ASHOK N
Abstract: PROBLEM TO BE SOLVED: To provide a method for providing an efficient channel structure for a communication system to use a code for defining a communication channel. SOLUTION: A code space is formed for equally dividing an available code into M tiers on the basis of load conditions. Information is scheduled to be formed during a particular time slot and assigned to a particular tier. The information is transmitted by using all the codes of the tier assigned during the scheduled time slot.
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公开(公告)号：JP2003124915A
公开(公告)日：2003-04-25
申请号：JP2002253367
申请日：2002-08-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RUDRAPATNA ASHOK N , SHARMA NARESH
Abstract: PROBLEM TO BE SOLVED: To provide a method for retransmitting a plurality of error-coding streams that are formed by one information block when an error is detected. SOLUTION: In this method, a plurality of error-coding streams are formed by one information block in a first process. At least, two error-coding streams are transmitted according to a confirmation message after that. In a second process, independent error detection is executed to at least two received error- coding streams. At least, one confirmation message is transmitted to at least one of the received error-coding streams according to the result of independent, executed error detection.
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Patent Agency Ranking6.发明专利
公开(公告)号：JP2002152849A
公开(公告)日：2002-05-24
申请号：JP2001274702
申请日：2001-09-11
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GOPALAKRISHNAN NANDU , JOSHI NIRANJAN SUDHIR , KADABA SRINIVAS R , KOGIANTIS ACHILLES GEORGE , RUDRAPATNA ASHOK N , SUNAY MEHMET OGUZ , SUNDARAM GANAPATHY SUBRAMANIAN , VITEBSKY STANLEY
IPC: H04B7/005 , H04B7/26 , H04W52/22 , H04W52/24 , H04W52/26 , H04W52/34 , H04W52/54 , H04Q7/38 , H04J13/00
Abstract: PROBLEM TO BE SOLVED: To disclose a method that uses transmission power information so as to decide a data rate thereby integrating a voice service and a data service on a same frequency channel in which the available transmission power information indicates an amount of transmission power available for future data transmission on one data channel or more. SOLUTION: A transmitter or a base station transmits an available power message denoting a quantity of available transmission power to a mobile phone for a prescribed future time via a forward link. The mobile phone performs signal-to-interference measurement corresponding to the received forward link and the received interference and decides a data rate supported by the mobile phone by using the signal to interference wave and the available power message. The decided data rate corresponds to a maximum data rate at which a minimum level of quality of service can be achieved at the mobile phone.
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公开(公告)号：JP2002118512A
公开(公告)日：2002-04-19
申请号：JP2001246026
申请日：2001-08-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RUDRAPATNA ASHOK N
Abstract: PROBLEM TO BE SOLVED: To provide a system in which a reversely directed link beam and a forwardly directed link beam connecting a mobile station and a base station are controlled independently and which is adapted to a customer and his state. SOLUTION: A beam formation device which forms a narrow and high-gain beam, and a radio-resource controller connected to the beam formation device which decides and allocates a radio resource are installed. A detector which detects a data characteristic related to the mobile station is connected to a radio-resource allocation device. An array of antenna elements which transmit and receive the beam between themselves and the mobile station is installed. An SNR detector which detects the S/N ratio of a signal between the antenna elements and the mobile station is connected to the radio-resource controller.
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公开(公告)号：JP2002111629A
公开(公告)日：2002-04-12
申请号：JP2001276068
申请日：2001-09-12
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RUDRAPATNA ASHOK N , SUNAY MEHMET OGUZ
Abstract: PROBLEM TO BE SOLVED: To provide a method for efficiently distributing a code space in multiple mode operation. SOLUTION: Two codes are led out from the Walsh space of a Walsh 32 by using a code from the Walsh space of a Walsh 16. Likewise, two codes are generated from the space of a Walsh 64 by using each Walsh code from the space of the Walsh 32. Wx,y represents No.y Walsh code from the Walsh space of a Walsh (x). W32.1 and W64.3 cross at right angles, but W32.1 and W64.2 do not cross at right angles. In a system using a 128 symbol Walsh code, it is desirable that codes are assigned to sub-spaces in the group unit of the eight continuous codes and only 16 decoding paths are required because a receiver receives transmission.
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公开(公告)号：JP2002016961A
公开(公告)日：2002-01-18
申请号：JP2001140919
申请日：2001-05-11
Applicant: LUCENT TECHNOLOGIES INC
Inventor： LU MING , RUDRAPATNA ASHOK N , ZHU PENGFEI
Abstract: PROBLEM TO BE SOLVED: To provide an efficient allocation of radio system resources for user application requirements in the management of system resource parameters in a radio communication system. SOLUTION: The apparatus for managing multi-user resources optimizes transmission resources while satisfying a required QoS reference of a user application providing a service, operates to determine allocation of radio transmission resources for each user application to which a radio system provides a service, determines total allocated transmission resources after transmission resources are allocated to all user applications, and compares the total allocated transmission resources with the upper limit transmission resource level of the radio system. In proportion to an initial allocation provided to each user application, a user application providing a service utilizes a part of difference between the upper limit transmission resource level and a currently allocated level.
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公开(公告)号：JP2000341249A
公开(公告)日：2000-12-08
申请号：JP2000117077
申请日：2000-04-18
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GIARDINA CHARLES ROBERT , RUDRAPATNA ASHOK N
Abstract: PROBLEM TO BE SOLVED: To make it possible to use a semi-Walsh function system which has high repulsion to wiretapping and jamming and enables multiple access and acquisition by transmitting a 1st information set of a user over a communication channel by using a 1st code and transmitting a 2nd information set of the user over the communication channel by using a 2nd code instead of the 1st code. SOLUTION: A diagonal matrix Dk is multiplied from back of a Walsh Hadmard matrix H to obtain the semi-Walsh function system Qk=HDk. An (i)th row is assigned to an (i)th user to enable multiple access over a data channel. Further, the diagonal matrix Dk is obtained each time information bit is sent by using a pseudo-random number generator, so the possibility that this row comes from semi-Walsh system Qk different for every transmit information bit is very high and it seems for an observer who does not know a formula for equal-length conversion that a semi-Walsh function column obtained as a result is random, so wiretapping is difficult.
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