公开(公告)号：BR9504224A

公开(公告)日：1996-07-30

申请号：BR9504224

申请日：1995-09-29

Applicant: MOTOROLA INC

Inventor： VILMUR RICHARD J ,  BRUCKERT EUGENE J

IPC: H04B7/26 ,  H04W36/18 ,  H04Q7/20 ,  H04M11/00

Abstract: A method, performed by a mobile station (119), prevents an active call from being dropped when the mobile station (119) suddenly transitions from a first coverage area (121) to a second coverage area (122) in a code division multiple access (CDMA) cellular radiotelephone system (100). The active call is determined (601) to be in danger of being dropped responsive to the mobile station (119) suddenly transitioning from the first coverage area (121) to the second coverage area (122). The first base station (115) is notified (602) that the active call is in danger of being dropped responsive to the step of determining (601). The active call with the first base station (115) is determined (603) to be in the process of being dropped responsive to the step of notifying (602). The active call is established (604) with the second base station (116) in the second coverage area (122) before the active call with the first base station (115) is dropped responsive to the step of determining (603).

公开(公告)号：CA2158114A1

公开(公告)日：1996-03-31

申请号：CA2158114

申请日：1995-09-12

Applicant: MOTOROLA INC

Inventor： VILMUR RICHARD J ,  BRUCKERT EUGENE J

IPC: H04B7/26 ,  H04W36/18 ,  H04Q7/38

Abstract: A method, performed by a mobile station (119), prevents an active call from being dropped when the mobile station (119) suddenly transitions from a first coverage area (121) to a second coverage area (122) in a code division multiple access (CDMA) cellular radiotelephone system (100). The active call is determined (601) to be in danger of being dropped responsive to the mobile station (119) suddenly transitioning from the first coverage area (121) to the second coverage area (122). The first base station (115) is notified (602) that the active call is in danger of being dropped responsive to the step of determining (601). The active call with the first base station (115) is determined (603) to be in the process of being dropped responsive to the step of notifying (602). The active call is established (604) with the second base station (116) in the second coverage area (122) before the active call with the first base station (115) is dropped responsive to the step of determining (603).

公开(公告)号：CA2086009A1

公开(公告)日：1992-11-29

申请号：CA2086009

申请日：1992-04-06

Applicant: MOTOROLA INC

Inventor： VILMUR RICHARD J ,  METROKA MICHAEL P

IPC: H04B1/40 ,  H03G3/20 ,  H04B1/04 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04J13/00 ,  H04M11/00

Abstract: The power control apparatus of the present invention is comprised of a local oscillator signal path coupled to a mixer (106) through a variable attenuator (107) and an IF signal path coupled to the mixer (106) through two variable attenuators (108 and 109) coupled in series. The IF signal path attenuators (108 and 109) are controlled by digital control circuitry (111) while the local oscillator path attenuator (107) is controlled by the control circuitry through a level shifter (110). The power level of the signal generated by the mixing of these two signals is less than the conducted output of the radiotelephone's power amplifier.

公开(公告)号：AU574983B2

公开(公告)日：1988-07-14

申请号：AU5018185

申请日：1985-10-16

Applicant: MOTOROLA INC

Inventor： PUHL LARRY C ,  VILMUR RICHARD J

IPC: H04M1/60 ,  H04B20060101 ,  H04B3/20 ,  H04B3/23 ,  H04M20060101 ,  H04M1/00 ,  H04M9/08 ,  H04B7/015 ,  H04M1/74 ,  H04Q7/04

公开(公告)号：NO863275D0

公开(公告)日：1986-08-14

申请号：NO863275

申请日：1986-08-14

Applicant: MOTOROLA INC

Inventor： PUHL LARRY C ,  VILMUR RICHARD J

IPC: H04M1/60 ,  H04B20060101 ,  H04B3/20 ,  H04B3/23 ,  H04M20060101 ,  H04M1/00 ,  H04M9/08 ,  H04B ,  H04M

公开(公告)号：FI863169A0

公开(公告)日：1986-08-04

申请号：FI863169

申请日：1986-08-04

Applicant: MOTOROLA INC

Inventor： PUHL LARRY CHARLES ,  VILMUR RICHARD J

IPC: H04M1/60 ,  H04B20060101 ,  H04B3/20 ,  H04B3/23 ,  H04M20060101 ,  H04M1/00 ,  H04M9/08 ,  H04M

公开(公告)号：BR0213013A

公开(公告)日：2004-10-05

申请号：BR0213013

申请日：2002-11-21

Applicant: MOTOROLA INC

Inventor： NEEDHAM MICHAEL L ,  VILMUR RICHARD J ,  CHINITZ LEIGH M

IPC: H04J13/00 ,  H04W84/08 ,  H04Q7/28

公开(公告)号：AU2002366837A1

公开(公告)日：2003-07-09

申请号：AU2002366837

申请日：2002-11-21

Applicant: MOTOROLA INC

Inventor： NEEDHAM MICHAEL L ,  VILMUR RICHARD J ,  CHINITZ LEIGH M

IPC: H04J13/00 ,  H04W84/08 ,  H04Q7/28

公开(公告)号：GB2320654B

公开(公告)日：2001-09-05

申请号：GB9723273

申请日：1997-11-05

Applicant: MOTOROLA INC

Inventor： BRUCKERT EUGENE J ,  VILMUR RICHARD J

IPC: H04B1/7117 ,  H04W36/00 ,  H04Q7/38

公开(公告)号：GB2293944B

公开(公告)日：1998-09-30

申请号：GB9518833

申请日：1995-09-14

Applicant: MOTOROLA INC

Inventor： VILMUR RICHARD J ,  BRUCKERT EUGENE J

IPC: H04B7/26 ,  H04W36/18 ,  H04Q7/38 ,  H04Q7/32

Abstract: A method, performed by a mobile station (119), prevents an active call from being dropped when the mobile station (119) suddenly transitions from a first coverage area (121) to a second coverage area (122) in a code division multiple access (CDMA) cellular radiotelephone system (100). The active call is determined (601) to be in danger of being dropped responsive to the mobile station (119) suddenly transitioning from the first coverage area (121) to the second coverage area (122). The first base station (115) is notified (602) that the active call is in danger of being dropped responsive to the step of determining (601). The active call with the first base station (115) is determined (603) to be in the process of being dropped responsive to the step of notifying (602). The active call is established (604) with the second base station (116) in the second coverage area (122) before the active call with the first base station (115) is dropped responsive to the step of determining (603).