公开(公告)号：BR9916553A

公开(公告)日：2001-10-09

申请号：BR9916553

申请日：1999-05-14

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BALACHANDRAN KRISHNA ,  EJZAK RICHARD PAUL ,  NANDA SANJIV ,  SETH SHIV MOHAN ,  VITEBSKIY SATNISLAV ,  WAUNG WILLIAM

IPC: H04B7/00 ,  H04L12/56 ,  H04L29/00 ,  H04L29/02 ,  H04L29/06 ,  H04L29/08 ,  H04Q7/20 ,  H04Q11/04

公开(公告)号：BR0005819A

公开(公告)日：2001-07-24

申请号：BR0005819

申请日：2000-12-08

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BALACHANDRAN KRISHNA ,  EJZAK RICHARD PAUL ,  NANDA SANJIV

IPC: H04B7/26 ,  H04J3/00 ,  H04Q7/36

Abstract: A system and method for providing wireless time division multiplexed communications in which time is divided into a plurality of frames and each frame is divided into N data bursts, which has a first multiplexer defining a channel as a series of bursts that occur periodically every N bursts once per frame; a second multiplexer defining a sub-channel as every Mth burst of said channel; and a transmitter transmitting said channel and sub-channel from a first station to a second station. A new interleaving 0246/1357 method is used by the system which is just as good as the known 0123/4567 method when ideal frequency hopping is used, and 0246/1357 has better performance when non-ideal frequency hopping or no frequency hopping is used.

公开(公告)号：BR0003572A

公开(公告)日：2001-01-09

申请号：BR0003572

申请日：2000-06-07

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KUMAR SARATH ,  NANDA SANJIV ,  RUBIN HARVEY ,  VITEBSKY STANLEY

IPC: H04B7/005 ,  H04B7/26 ,  H04W36/18 ,  H04W52/14 ,  H04W52/40 ,  H04W52/44 ,  H04W52/50 ,  H04Q7/38

Abstract: A back haul architecture enables efficient primary transfer (i.e., transfer of the designation of primary base station from one base station to another). A frame selection/distribution (FSD) function queues packets of forward-link data -- to which sequence numbers have been assigned --for packet-mode transmission over the back haul only to one base station -- the current primary base station -- where the packets are again queued for over-the-air transmission to the mobile unit. If and when it becomes appropriate to transfer the designation of primary base station to another base station, there may still be packets of data queued at the old primary base station awaiting transmission to the mobile unit. The old primary base station sends a message to the new primary base station indicating a particular sequence number that identifies the remaining packets of forward-link data queued at the old primary base station. The new primary base station then sends a message to the FSD function requesting transmission of those packets of forward-link data corresponding to the particular sequence number. The FSD function then transmits those requested packets of forward-link data to the new primary base station, which queues the requested packets for over-the-air transmission to the mobile unit. In this way, transmission of all of the forward-link data to the mobile unit is enabled without having to transmit the remaining queued packets of forward-link data from the old primary base station to the new primary base station over the back haul, thereby providing an efficient mechanism for primary transfer in wireless communications systems that support forward-link data transmissions only in simplex mode.

公开(公告)号：CA2310486A1

公开(公告)日：2000-12-11

申请号：CA2310486

申请日：2000-06-01

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KUMAR SARATH ,  VITEBSKY STANLEY ,  NANDA SANJIV ,  RUBIN HARVEY

IPC: H04B7/005 ,  H04B7/26 ,  H04W36/18 ,  H04W52/14 ,  H04W52/40 ,  H04W52/44 ,  H04W52/50 ,  H04Q7/38

Abstract: A back haul architecture enables efficient primary transfer (i.e., transfer of the designation of primary base station from one base station to another). A frame selection/distribution (FSD) function queues packets of forward-link data -- to which sequence numbers have been assigned --for packet-mode transmission over the back haul only to one base station -- the current primary base station -- where the packets are again queued for over-the-air transmission to the mobile unit. If and when it becomes appropriate to transfer the designation of primary base station to another base station, there may still be packets of data queued at the old primary base station awaiting transmission to the mobile unit. The old primary base station sends a message to the new primary base station indicating a particular sequence number that identifies the remaining packets of forward-link data queued at the old primary base station. The new primary base station then sends a message to the FSD function requesting transmission of those packets of forward-link data corresponding to the particular sequence number. The FSD function then transmits those requested packets of forward-link data to the new primary base station, which queues the requested packets for over-the-air transmission to the mobile unit. In this way, transmission of all of the forward-link data to the mobile unit is enabled without having to transmit the remaining queued packets of forward-link data from the old primary base station to the new primary base station over the back haul, thereby providing an efficient mechanism for primary transfer in wireless communications systems that support forward-link data transmissions only in simplex mode.

公开(公告)号：AU3403800A

公开(公告)日：2000-11-30

申请号：AU3403800

申请日：2000-05-11

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CLOUTIER JOSEPH E ,  KNISELY DOUGLAS N ,  KUMAR SARATH ,  NANDA SANJIV

IPC: H04B7/005 ,  H04L1/00 ,  H04L1/16 ,  H04L1/18 ,  H04L29/02 ,  H04B17/00 ,  H04L1/14

公开(公告)号：CA2296137A1

公开(公告)日：2000-07-28

申请号：CA2296137

申请日：2000-01-14

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BUDKA KENNETH C ,  NANDA SANJIV ,  SCHEFCZIK HANS PETER

IPC: H04L27/00 ,  H04B1/04 ,  H04B7/26 ,  H04L1/00 ,  H04Q7/38

Abstract: In a wireless data network, such as a General Packet Radio Service (GPRS) network, a transmitter uses one of k coding/modulation schemes for transmitting data. The transmitter initially selects a coding/modulation scheme, C, as a function of carrier-to-interference ratio (C/I) measurements. The transmitter then calculates the number of blocks, B, required to transmit a number of data packets, D, using the coding/modulation scheme C. In addition, the transmitter calculates the number of blocks required to transmit the number of data packets, D, for each coding/modulation scheme that is stronger than the selected coding/modulation scheme C. The transmitter finally selects that coding/modulation scheme that results in transmitting the number of data packets D in B blocks using the strongest coding/modulation scheme. As a result, each block is transmitted using the strongest coding/modulation scheme available.

公开(公告)号：AU1520100A

公开(公告)日：2000-05-22

申请号：AU1520100

申请日：1999-11-03

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BALACHANDRAN KRISHNA ,  EJZAK RICHARD P ,  NANDA SANJIV

IPC: H04Q7/38 ,  H04L1/00 ,  H04L1/18

公开(公告)号：AU2907799A

公开(公告)日：1999-12-09

申请号：AU2907799

申请日：1999-05-17

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BALACHANDRAN KRISHNA ,  WAUNG WILLIAM ,  VITEBSKIY SATNISLAV ,  SETH SHIV MOHAN ,  NANDA SANJIV ,  EJZAK RICHARD PAUL

IPC: H04L12/56 ,  H04L29/02

公开(公告)号：CA2271419A1

公开(公告)日：1999-11-17

申请号：CA2271419

申请日：1999-05-10

Applicant: LUCENT TECHNOLOGIES INC

Inventor： WAUNG WILLIAM ,  BALACHANDRAN KRISHNA ,  NANDA SANJIV ,  EJZAK RICHARD PAUL ,  VITEBSKIY STANISLAV ,  SETH SHIV MOHAN

IPC: H04B7/00 ,  H04L12/56 ,  H04L29/00 ,  H04L29/02 ,  H04L29/06 ,  H04L29/08 ,  H04Q7/20 ,  H04Q11/04

Abstract: A system and method of implementing a radio link protocol and dynamic partial echo management for a transaction oriented packet data communication system. A data backlog is described with a media access control layer controller and transmitting a BEGIN protocol data unit transmitted to a receiver. A media access control layer transaction is initiated in response to the transmitting of the BEGIN frame.

公开(公告)号：CA2199763A1

公开(公告)日：1997-10-10

申请号：CA2199763

申请日：1997-03-12

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DOSHI BHARAT TARACHAND ,  DRAVIDA SUBRAHMANYAM ,  EJZAK RICHARD PAUL ,  NANDA SANJIV ,  SAWKAR ANIL S ,  TREVENTI PHILIP ANDREW

IPC: H04W84/02 ,  H04J3/00 ,  H04M3/00 ,  H04Q3/00 ,  H04Q11/04 ,  H04W88/18 ,  H04Q7/24 ,  H04L12/56

Abstract: Four stages of digital cellular architecture are presented which reuse much of the existing voice infrastructure while allowing graceful introduction of data and integrated voice/data services over industry standard, low cost platforms. First, a separate ATM-based infrastructure (46) is introduced that supports data services. A new data call control is introduced on industry standard hardware platforms using object oriented and modular programming. Second, ATM is introduced at radio ports (68) and call control functions are migrated to the new ATM-based call control platforms (72, 74). Third, vocoders (76) are introduced at the DCS. Fourth, the cellular functions of the legacy cellular switch (10) are phased out and replaced by the ATM-based target architecture.