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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:JP2000115861A
公开(公告)日:2000-04-21
申请号:JP28397399
申请日:1999-10-05
Applicant: LUCENT TECHNOLOGIES INC
Inventor: CAO QIANG , FREIBERG LORENZ FRED , LIM SEAU SIAN , LIN JIE , READER DAVID JONATHAN , STANTON JAMES LESLIE
Abstract: PROBLEM TO BE SOLVED: To minimize addition of an overhead and to minimize the need to change the structure of a physical layer by multiplexing plural packet data users to one downlink shared channel. SOLUTION: A multiplexer 26 is provided in an MAC sublayer 4a and inputs respective transport blocks from respective user data streams on signal lines 12a, 12b, and 12c. The multiplexer 26 multiplexes the transport blocks which are received from the all user data streams in a corresponding time frame into one signal on a signal line 28. Thus, a single piece of signal data, including the transport blocks for all the user in a certain time frame, is inputted to an encoding block 14d, a rate matching block 16d and an interleaving block 18d, and these process the multiplexed transport blocks.
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公开(公告)号:JP2000004208A
公开(公告)日:2000-01-07
申请号:JP5634799
申请日:1999-03-04
Applicant: LUCENT TECHNOLOGIES INC
Inventor: ALLPRESS STEPHEN ALAN , CAO QIANG , FREIBERG LORENZ FRED , LIN JIE , WOOD STEPHEN ANDREW
Abstract: PROBLEM TO BE SOLVED: To obtain an efficient power controllable communication system by making each user terminal extract data from its allocated time slot in those frames indicating that a slot includes data in accordance with setup information and a user packet flag. SOLUTION: A dedicated downlink channel time frame comprises, for instance, sixteen time slots. Downlink data is transmitted through a data channel in a repetition time frame and downlink setup information is transmitted through a control channel because a user terminal shows from which time slot data should be extracted. Each frame of a data channel includes a user packet flag that indicates whether or not each time slot in a frame includes data. Each user terminal extracts data from its allocated time slot in those frames in accordance with setup information and a user packet flag.
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公开(公告)号:JPH11215547A
公开(公告)日:1999-08-06
申请号:JP30931198
申请日:1998-10-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor: CHARLOTTE BADEN , CAO QIANG , FREIBERG LORENZ FRED , READER DAVID JONATHAN
IPC: H04B7/212 , H04B7/216 , H04J3/00 , H04J3/02 , H04J3/24 , H04L12/56 , H04L29/10 , H04M1/00 , H04W74/00 , H04W74/04 , H04W80/00 , H04W84/04 , H04W99/00 , H04Q7/36
Abstract: PROBLEM TO BE SOLVED: To provide a flexible and efficient asymmetrical multiplex access protocol by assigning a slot to incoming link communication or outgoing link communication so as to optimize a transmission efficiency of a channel. SOLUTION: End user devices (mobile stations) 1-6 use one optional communication protocol among plural communication protocols for traversing an aerial interface 12 via antennas 10, 11 and to hold communication with a closest bas station 13. The base station 13 uses is own broadcast control channel(BCCH) to broadcast information to all the mobile stations 1-6 within a range at all times. The base station 13 and the mobile stations 1-6 use a traffic channel(TCH) to hold communication and the base station 13 sends a feedback signal by the use of an ancillary control channel(ACCH) simultaneously. Data sent through a traffic channel(TCH) are divided into packets and are sent with proper control bits by the use of a proper slot.
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公开(公告)号:JPH11215549A
公开(公告)日:1999-08-06
申请号:JP30931398
申请日:1998-10-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor: CAO QIANG , FREIBERG LORENZ FRED , READER DAVID JONATHAN
Abstract: PROBLEM TO BE SOLVED: To obtain a method by which end user devices compete with each other in access to a common resource of a communication channel, by informing a controller of a communication system of a resource requested by an end user device to send another information packet in a sequence. SOLUTION: End user devices (mobile stations) 1-n use a random access channel(RACH) for sending a request to a system controller 21, so as to compete with each other in transmission permission of a data packet. A base station 20 uses a dynamic resource assignment table(DRA) 22 to decide whether or not a sufficiently idle resource is in existence in a network and returns permission of transmission of a data packet through the use of a feedback channel, when in existence. Thus, the method to request a resource in the communication system by the end user devices (mobile stations) 1-n is obtained.
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公开(公告)号:JPH11205223A
公开(公告)日:1999-07-30
申请号:JP30931298
申请日:1998-10-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor: CAO QIANG , FREIBERG LORENZ FRED , READER DAVID JONATHAN
Abstract: PROBLEM TO BE SOLVED: To allow the power control device for mobile to act at the time of inter-station start in the mobile radio communication system to reduce a time required to set an efficient power level. SOLUTION: The power control device controls a signal strength in the mobile radio communication system where communication is made by using a different channel at least first. The signal to interference ratio SIR of a signal received by a reception station is measured and the measured information is sent back to a transmission station 13 to provide an index of a proper power level to send succeeding signals.
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公开(公告)号:DE60034582D1
公开(公告)日:2007-06-06
申请号:DE60034582
申请日:2000-12-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor: FREIBERG LORENZ FRED , GUNREBEN PETER CHRISTIAN , MUECKENHEIM JENS
IPC: H04B7/005 , H04B17/309 , H04L1/00 , H04L1/08 , H04L1/20 , H04W52/12 , H04W52/16 , H04W52/26 , H04W52/28 , H04W52/32
Abstract: The invention relates to the controlling of quality of services of a CDMA-based-System. An object of the invention is to provide an improved control mechanism for the quality of services in a CDMA-System, in particular by providing a controlling means apt to assign the target signal to interference ratio, the static rate matching factor and the power-offset dynamically, especially adapted to be used for UMTS-Systems. The invention proposes and uses a dynamic quality control for adjusting quality of services of a CDMA-based System transmitting a plurality of different services between the system and a user equipment by using at least one data channel (DPDCH) with the services multiplexed and rate matching technique applied and an associated control channel (DPCCH) wherein parameters representing transmitting properties concerning the quality of service, advantageously representing a signal to interference ratio (SIR) for the control channel (DPCCH), a static rate matching factor (SRF) for each service and a power-offset (G) between the control channel (DPCCH) and the data channel (DPDCH) are derived for each service to achieve desired quality of services, during an installation process based on default quality (1,2) requirements and during an operating condition dynamically in dependence of quality estimates (1,5) performed on each of that services during data transmission.
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公开(公告)号:DE69832878D1
公开(公告)日:2006-01-26
申请号:DE69832878
申请日:1998-10-05
Applicant: LUCENT TECHNOLOGIES INC
Inventor: CAO QIANG , LIN JIE , LIM SEAU SIAN , STANTON JAMES LESLIE , READER DAVID JONATHAN , FREIBERG LORENZ FRED
Abstract: There is disclosed a method of transmitting data in a code division multiple access system, comprising the steps of: outputting data blocks associated with a plurality of respective users in a plurality of corresponding data streams, the data blocks of each data stream being arranged in successive time frames of a constant, predetermined length; and multiplexing the data blocks on all the data streams for each given time frame. A communications system including circuitry for utilising such a method is also disclosed.
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公开(公告)号:AU5266699A
公开(公告)日:2000-04-06
申请号:AU5266699
申请日:1999-10-01
Applicant: LUCENT TECHNOLOGIES INC
Inventor: CAO QIANG , FREIBERG LORENZ FRED , LIM SEAU SIAN , LIN JIE , READER DAVID JONATHAN , STANTON JAMES LESLIE
Abstract: There is disclosed a method of transmitting data in a code division multiple access system, comprising the steps of: outputting data blocks associated with a plurality of respective users in a plurality of corresponding data streams, the data blocks of each data stream being arranged in successive time frames of a constant, predetermined length; and multiplexing the data blocks on all the data streams for each given time frame. A communications system including circuitry for utilising such a method is also disclosed.
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公开(公告)号:AU715782B2
公开(公告)日:2000-02-10
申请号:AU8958498
申请日:1998-10-28
Applicant: LUCENT TECHNOLOGIES INC
Inventor: CAO QIANG , FREIBERG LORENZ FRED , READER DAVID JONATHON
Abstract: Power control mechanisms control signal strength in a mobile wireless communication systems which communicate, at least initially, over different channels. By measuring the Signal-to-Interference ratio in signals received by a receiving station and returning that information to the transmitting station, an indication of appropriate power levels at which to transmit subsequent signals is given.
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