公开(公告)号：GB2370191A

公开(公告)日：2002-06-19

申请号：GB0030407

申请日：2000-12-13

Applicant: MOTOROLA INC

Inventor： CALIN DORU ,  BOSCOVIC DRAGAN ,  THOMAS HOWARD

IPC: H04W36/12 ,  H04W36/14 ,  H04Q7/38

Abstract: A mobile station operating in FDD (frequency division duplex) mode switches to TDD (time division duplex) mode in order to monitor signals from neighbouring base stations or communications systems. The mobile can then perform handover in TDD mode to the alternative base station or system. The mobile station may be a UMTS (universal mobile telecommunication standard) mobile phone with TDD and FDD modes of operation. Switching to TDD mode before handover avoids the need to create idle periods using a compressed mode of operation in FDD mode for monitor signals. Inter-system handover may be to GSM system.

公开(公告)号：AU5396900A

公开(公告)日：2000-12-18

申请号：AU5396900

申请日：2000-05-22

Applicant: MOTOROLA INC

Inventor： BOSCOVIC DRAGAN ,  CALIN DORU ,  GOEUSSE FRANCOIS ,  SARTORI PHILIPPE

IPC: H04W16/06 ,  H04W36/14 ,  H04Q7/38

Abstract: A cellular communications system permits handover of a group of mobile stations (15) having like characteristics from a base station (13) operating in one type of network e.g. UMTS to a base station (16) operating in a different type of network e.g. GSM, or from a first carrier frequency to a second carrier frequency both being supported by the same base station, thereby relieving congestion in an overloaded cell by handing over a group of calls to an under-loaded one. The invention has the benefits of enabling such a handover with the minimum of signalling overhead.

公开(公告)号：GB2368496B

公开(公告)日：2004-03-10

申请号：GB0025999

申请日：2000-10-24

Applicant: MOTOROLA INC

Inventor： BOSCOVIC DRAGAN ,  CALIN DORU ,  GOEUSSE FRANCOIS

IPC: H04W88/06 ,  H04Q7/32