公开(公告)号：JP2002135204A

公开(公告)日：2002-05-10

申请号：JP2001266663

申请日：2001-09-04

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KOGIANTIS ACHILLES GEORGE ,  SUNAY MEHMET OGUZ ,  HARISH BISUWANASAN

IPC: H04B7/06 ,  H04B7/26 ,  H04W8/18 ,  H04W12/10 ,  H04J13/00

Abstract: PROBLEM TO BE SOLVED: To provide a method for reconfiguring a communication system, in order to effect high quality communication. SOLUTION: In the communication system of the present invention, a transmitter is reconfigured based on the state of a mobile station, e.g. the functions and capacity of a mobile station receiver, the ratio of carrier vs interference waves or the signal/noise ratio and the mobility of the mobile station. Consequently, the arrangement of the transmitter is optimized to the state of a specific mobile station receiver. In one embodiment, the transmitter is selected to operate in single transmit antenna configuration, a space time configuration, selective transmit diversity configuration or multi-output multi-input configuration.

公开(公告)号：JP2003153344A

公开(公告)日：2003-05-23

申请号：JP2002249360

申请日：2002-08-28

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KOGIANTIS ACHILLES GEORGE ,  OZAROW LAWRENCE HOWARD

IPC: H04J13/04 ,  H04W72/08 ,  H04W72/12 ,  H04Q7/38

Abstract: PROBLEM TO BE SOLVED: To provide a method for realizing scheduling of a plurality of subscribers independently and increasing a capacity and a throughput of a HDR wireless communication system. SOLUTION: Each scheduler is related with an antenna and base-station facility for receiving a channel state as a base for subscriber's scheduling. This method includes a step of preparing a plurality of schedulers for carrying out scheduling of a subscriber independently from another subscriber on the basis of the channel state transmitted from the subscriber. The channel condition is treated by the base-station facility and scheduled by the scheduler.

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.

公开(公告)号：JP2002141865A

公开(公告)日：2002-05-17

申请号：JP2001266662

申请日：2001-09-04

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HUANG HOWARD C ,  KOGIANTIS ACHILLES GEORGE ,  HARISH BISUWANASAN

IPC: H04J3/00 ,  H04B7/06 ,  H04B7/26 ,  H04J11/00

Abstract: PROBLEM TO BE SOLVED: To provide a high quality communication system. SOLUTION: In the radio communication system using plural antennas for transmission, a method is provided for easily distinguishing pilot signals (carrier signals) transmitted from the different antennas. As one example, each of two antennas simultaneously transmits the value of a time slot in data while multiplexing the pilot signal with the data in the time division manner. A pilot signal from the first antenna of two antennas is encoded by a first code like a Walsh code and a pilot signal from the second antenna is encoded by a second code like the other Walsh code. By means of such different codes, a receiver can perform the coherent detection of signals transmitted by both the first and second antennas.

公开(公告)号：JP2003158765A

公开(公告)日：2003-05-30

申请号：JP2002249358

申请日：2002-08-28

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KOGIANTIS ACHILLES GEORGE ,  OZAROW LAWRENCE HOWARD

IPC: H04B7/26 ,  H04L12/28 ,  H04W72/08 ,  H04W72/12 ,  H04Q7/36 ,  H04Q7/38

Abstract: PROBLEM TO BE SOLVED: To provide a method for scheduling subscriber equipment to increase the system capacity. SOLUTION: A method for scheduling a plurality of subscriber equipment is performed on the basis of channel conditions of uplink channels and downlink channels of an air interface of a wireless communications system. The scheduled subscriber equipment can transmit information simultaneously at the desired information rate via the air interface to the plurality of antennas. The base station is provided with a plurality of antennas, and the subscriber equipment is provided with one antenna.

公开(公告)号：JP2002124904A

公开(公告)日：2002-04-26

申请号：JP2001276065

申请日：2001-09-12

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KOGIANTIS ACHILLES GEORGE ,  SUNAY MEHMET OGUZ ,  VISWANATHAN HARISH

IPC: H04B7/26 ,  H04B7/06 ,  H04B7/08 ,  H04L1/00 ,  H04L1/06

Abstract: PROBLEM TO BE SOLVED: To provide an effective method which controls data transmission with a communication channel for more detailed transmission by using the minimum band width. SOLUTION: A base station receives a message containing at least two sets of bits. A first set of bits is plural bits for designating a data rate. A second set of bits designates a transmission mode and contains at least one bit. A subset of possible transmission modes is discriminated on the basis of the data rate designated by the first set of bits. The second set of bits is used for selecting a transmission mode from the subset of transmission modes. Further, the base station transmits at least one bit to a mobile station and designates a data packet size.

公开(公告)号：JP2004007548A

公开(公告)日：2004-01-08

申请号：JP2003100743

申请日：2003-04-03

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KOGIANTIS ACHILLES GEORGE ,  RUDRAPATNA ASHOK N ,  SHARMA NARESH

IPC: H04L1/00 ,  H04L29/08

Abstract: PROBLEM TO BE SOLVED: To assign a data rate to a plurality of streams of information transmitted from a plurality of transmission apparatuses through a communication channel of a communication system. SOLUTION: This invention provides an assignment method of a data rate wherein a channel characteristic received by each stream is decided by using a correction incorporation limit and respective data rates are selected from a set (MCS) of modulation and encoding processed by a communication channel. That is, the method includes a step of applying a signal-to-noise-ratio (SNR) to a code word error probability versus SNR curve to select a particular component of the modulation and encoding set having a particular data rate, a code word error probability, and a data rate to be assigned to a stream. The SNR is obtained by applying an upper limit with respect to the error probability of the stream to a symbol error provability versus SNR curve on the basis of an entire average of symbol groups used for the stream. COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2003111137A

公开(公告)日：2003-04-11

申请号：JP2002249359

申请日：2002-08-28

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KOGIANTIS ACHILLES GEORGE ,  OZAROW LAWRENCE HOWARD

IPC: H04B7/005 ,  H04B7/26 ,  H04W36/16 ,  H04W52/34 ,  H04W52/42 ,  H04W52/50 ,  H04W72/06 ,  H04W72/12 ,  H04Q7/36 ,  H04Q7/38

Abstract: PROBLEM TO BE SOLVED: To provide a method by which a plurality of subscriber's apparatuses is scheduled based on channel conditions and calculated power allocations against the downlink channel of the air interface of a radio communication channel so as to meet a desired system requirement. SOLUTION: In this method, a subscriber requesting an access right to a communication system or having a given access right to the system is selected by means of a scheduler based on the state of a channel and power allocation calculation. The scheduler achieves the desired system requirement by scheduling a selected group of subscribers and, consequently, the subscribers can simultaneously receive information from a plurality of antennas at a bas station.

公开(公告)号：ES2236141T3

公开(公告)日：2005-07-16

申请号：ES01304723

申请日：2001-05-29

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GOPALAKRISHNAN NANDU ,  HU TECK H ,  KHAN FAROOQ ULLAH ,  KOGIANTIS ACHILLES GEORGE ,  MONOGIOUDIS PANTELIS ,  SAMPATH ASHWIN

IPC: H04L1/00 ,  H04L1/12

Abstract: Un método para determinar una tasa de datos para un canal de comunicaciones de enlace descendente compartido por una pluralidad de unidades inalámbricas (AT) para comunicación con una estación base (BS), en el que se adapta dicha tasa de datos (R1-R3 en 22a-q) basándose en información de realimentación (R1-R3 en 20a- e) de al menos una de las unidades inalámbricas (AT), caracterizándose dicho método por: recibir, a una tasa de realimentación, información de realimentación (R1-R3 en 20a-e) de al menos una unidad inalámbrica dada para calcular la tasa de datos (R1-R3 en 22a-q); y adaptar, a una tasa de adaptación diferente de la tasa de realimentación, dicha tasa de datos basándose en dicha información de realimentación, para que al menos la unidad inalámbrica dada la use en dicho canal de comunicaciones de enlace descendente.

公开(公告)号：AT383688T

公开(公告)日：2008-01-15

申请号：AT01304725

申请日：2001-05-29

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GOPALAKRISHNAN NANDU ,  HU TECK H ,  KHAN FAROOQ ULLAH ,  KOGIANTIS ACHILLES GEORGE ,  MONOGIOUDIS PANTELIS ,  SAMPATH ASHWIN

IPC: H04L1/18 ,  H04L1/00

Abstract: A transport channel multiplexing system provides improved use of wireless resources in a shared data channel system. For example, the transport channel system reduces the amount of transport format information required for using a shared data channel, such as the actual number of packet data units in a transport channel of the shared data channel. Additionally, by scheduling or multiplexing coded sub-blocks from one or more transport channels over the shared data channel, the transport channel multiplexing system can provide improved integration with other important features, such as incremental redundancy, fast adaptation to channel conditions and transport channel dependent quality of service (QOS) control, to provide improved system performance.