公开(公告)号：JP2002204471A

公开(公告)日：2002-07-19

申请号：JP2001347146

申请日：2001-11-13

Applicant: LUCENT TECHNOLOGIES INC

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

IPC: H04J3/00 ,  H04B7/26 ,  H04W16/26 ,  H04Q7/36

Abstract: PROBLEM TO BE SOLVED: To provide an increased cell seize with minimum modification to hardware and software. SOLUTION: In a UTRAN(UMTS(Universal Mobile Telephone System) Terrestrial Radio Access Network) operating time division duplexing, one time slot 22 (11) in each frame is maintained in a no-transmit condition, all preceding time slots 22 (1) to 22 (10) being uplink time slots and all succeeding time slots 22 (1) to 22 (15) being down link time slots (or vice versa). The cell size is markedly increased.

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：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.