公开(公告)号：JP2003219481A

公开(公告)日：2003-07-31

申请号：JP2002014476

申请日：2002-01-23

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ELOY STEPHANE ,  FALAKI HAMID REZA ,  KARIMI HAMID REZA ,  LE GOFF YVON

IPC: H04J3/00 ,  H04W16/02 ,  H04W72/04 ,  H04Q7/38

Abstract: PROBLEM TO BE SOLVED: To reduce or overcome the problem of interference between a base station and mobile stations belonging to a system not adjusted by different operators at a TDD mode of a UMTS. SOLUTION: The method of operating a communication system has a step of preparing a sequence of time frames in a radio link, each time frame has a plurality of time slots, each time slot has an allotted channel, and the position of the time slot or the allotted channel varies in the following time frame of the sequence according to a specified method. COPYRIGHT: (C)2003,JPO

公开(公告)号：DE60129108T2

公开(公告)日：2008-02-28

申请号：DE60129108

申请日：2001-05-04

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BRIAND JACQUES ,  CHAPON THIERRY HERVE ,  FALAKI HAMID REZA ,  LE GOFF YVON ,  PINKARD DAVID PETER ,  RITTENHOUSE GEORGE E

IPC: H04B7/26 ,  H04J3/00 ,  H04W72/04 ,  H04W76/04 ,  H04W92/10

Abstract: Wireless telecommunications apparatus comprises a base station and a user terminal. The base station sends data to the user terminal on a first channel (DL1) at a first frequency (f1) in selected time slots and the user terminal sends data to the base station on a second channel (UL2) at a second frequency (f2) in selected time slots. These two frequencies are different. The network also either includes a transmitter which transmits further data to the user equipment on a shared channel (DL0) at a third frequency (f0) in time slots in which the other data is not being sent or includes a receiver which receives further data from the user equipment on a shared channel at the third frequency in time slots in which the other data is not being sent. The apparatus can be a UMTS or other third generation system.

公开(公告)号：CA2366426A1

公开(公告)日：2002-07-24

申请号：CA2366426

申请日：2001-12-28

Applicant: LUCENT TECHNOLOGIES INC

Inventor： LE GOFF YVON ,  FALAKI HAMID REZA ,  ELOY STEPHANE ,  KARIMI HAMID REZA

IPC: H04B7/212 ,  H04B7/26 ,  H04J3/16 ,  H04L12/56 ,  H04W16/14 ,  H04W28/06 ,  H04W72/04 ,  H04W74/04 ,  H04W84/04 ,  H04L5/22

Abstract: To reduce interference between physically close base and mobile station s belonging to uncoordinated systems of different operators, in a cellular tim e division telecommunications system, e.g. the TDD mode of UMTS, a method of operation comprises providing a sequence of time frames, each time frame including a plurality of time slots, each time slot having an allocated upli nk or downlink channel, wherein the positions of said time slots of said channels are changed in consecutive time frames of said sequence according to a deterministic sequence, e.g. a cyclic rotation. In an initial set up operation, the base station may instruct a mobile station to transmit or receive in certain time slots, and that these time slots should be changed in succeeding frames according to a predefined algorithm transmitted to the mobile station.

公开(公告)号：DE60129108D1

公开(公告)日：2007-08-09

申请号：DE60129108

申请日：2001-05-04

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BRIAND JACQUES ,  CHAPON THIERRY HERVE ,  FALAKI HAMID REZA ,  LE GOFF YVON ,  PINKARD DAVID PETER ,  RITTENHOUSE GEORGE E

IPC: H04B7/26 ,  H04J3/00 ,  H04W72/04 ,  H04W76/04 ,  H04W92/10

Abstract: Wireless telecommunications apparatus comprises a base station and a user terminal. The base station sends data to the user terminal on a first channel (DL1) at a first frequency (f1) in selected time slots and the user terminal sends data to the base station on a second channel (UL2) at a second frequency (f2) in selected time slots. These two frequencies are different. The network also either includes a transmitter which transmits further data to the user equipment on a shared channel (DL0) at a third frequency (f0) in time slots in which the other data is not being sent or includes a receiver which receives further data from the user equipment on a shared channel at the third frequency in time slots in which the other data is not being sent. The apparatus can be a UMTS or other third generation system.

公开(公告)号：CA2363406A1

公开(公告)日：2002-06-08

申请号：CA2363406

申请日：2001-11-16

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SOULABAIL ROLAND ,  LE GOFF YVON ,  BRIAND JACQUES ,  FALAKI HAMID REZA ,  KARIMI HAMID REZA

IPC: H04J3/00 ,  H04B7/212 ,  H04B7/26 ,  H04L7/10 ,  H04W56/00 ,  H04Q7/36 ,  H04Q11/04

Abstract: In order to double the size of cells for a UMTS/UTRAN system operating in time division mode (TDD) from 3.75 km to 7.5 km, the node B station defines the guard period (66) for a downlink slot followed by an adjacent uplink slot to be longer than the guard period (68) for an uplink slot followed by an adjacent downlink slot, whereby the cell size is extended. Ea ch UE adjusts its timing in reponse to timing deviation signals (64) transmitte d at the start of each downlink bust, so as to transmit an uplink burst which arrive at the Node B, at the beginning of the next uplink slot.