公开(公告)号：AU1670700A

公开(公告)日：2000-10-04

申请号：AU1670700

申请日：1999-12-10

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BHATOOLAUL DAVID LAHIRI ,  LIM SEAU SIAN ,  CAO QIANG

IPC: H04L29/08 ,  H04B7/005 ,  H04L1/16 ,  H04W28/04 ,  H04W52/48 ,  H04W52/50 ,  H04W74/08 ,  H04Q7/38

Abstract: In a UMTS, the AICH is arranged to send, in addition to a signal acknowledging that a preamble from a mobile is at an acceptable strength, an additional signal indicating that the mobile is not currently permitted to send its message; this may apply when the BTS does not have hardware resources available. If the BTS can predict when the hardware will become available, the additional signal can include a time out (T) after which the mobile system can send its message signal.

公开(公告)号：BR9902885A

公开(公告)日：2000-03-08

申请号：BR9902885

申请日：1999-07-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CAO QIANG ,  LIN JIE ,  MONOGIOUDIS PANTELIS

IPC: H04B7/26 ,  H04B7/005 ,  H04L12/56

公开(公告)号：BR9804047A

公开(公告)日：1999-12-14

申请号：BR9804047

申请日：1998-10-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BADEN CHARLOT ,  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: The invention relates to mobile cellular communication systems in which asymmetric access to a time division duplex (TDD) communication channel is provided. The channel is divided (by TDD) into slots which are allocated to either uplink communication or downlink communication by the base station in each cell. Timing of slots, and thus of compulsory uplink and downlink slots, is coordinated across the cells of a system.

公开(公告)号：BR9804043A

公开(公告)日：1999-12-14

申请号：BR9804043

申请日：1998-10-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CAO QIANG ,  FREIBERG LORENZ FRED ,  READ DAVID JONATHAN

IPC: H04B7/26 ,  H04B7/005 ,  H04Q7/38

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.

公开(公告)号：ID21223A

公开(公告)日：1999-05-06

申请号：ID981407

申请日：1998-10-26

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CAO QIANG ,  FREIBERG LORENZ FRED ,  READER DAVID JONATHAN

IPC: H04B1/707 ,  H04L12/56 ,  H04W28/06 ,  H04W72/00 ,  H04W74/00 ,  H04B7/180

Abstract: In a code division multiple access (CDMA) wireless system, a wireless terminal transmits information packets to a communications systems controller. Each information packet comprises a piggy back field which indicates to the communication systems controller resources requested by the wireless terminal for transmission of subsequent information packets.

公开(公告)号：ID21212A

公开(公告)日：1999-05-06

申请号：ID981392

申请日：1998-10-21

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BADEN CHARLOTTE ,  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

Abstract: The invention relates to mobile cellular communication systems in which asymmetric access to a time division duplex (TDD) communication channel is provided. The channel is divided (by TDD) into slots which are allocated to either uplink communication or downlink communication by the base station in each cell. Timing of slots, and thus of compulsory uplink and downlink slots, is coordinated across the cells of a system.

公开(公告)号：CA2248490A1

公开(公告)日：1999-04-30

申请号：CA2248490

申请日：1998-09-30

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FREIBERG LORENZ ,  READER DAVID JONATHAN ,  CAO QIANG

IPC: H04B1/707 ,  H04L12/56 ,  H04W28/06 ,  H04W72/00 ,  H04W74/00 ,  H04L12/24

Abstract: The invention relates to communication systems in which end-user devices contend for access to shared resources of a channel in the communication system. End-user devices sending data in packets over the communication channel piggyback requests for changes in allocated resources for transmission of anothe r packet. A system controller changes the resource allocated to individual end-use r devices depending upon the piggyback requests, in order to optimise the throughp ut of the channel. A packet switched network may thus act like a circuit switched network if required.