公开(公告)号：EP0978173A1

公开(公告)日：2000-02-09

申请号：EP97953489.8

申请日：1997-12-19

Applicant: MOTOROLA, INC.

Inventor： BRUCKERT, Eugene, J. ,  KOTZIN, Michael, D. ,  HUNG, Nelson

IPC: H04K1/10

CPC classification number: H04W72/0486 ,  H04W36/18

Abstract: In a communication system where frame boundaries for the discrete frames for different users may be offset relative to one another, assignment of a remote unit (125) to a particular frame offset occurs by a processor (321) determining a frame offset belonging to a group that is the least busy group of all possible groups. In addition, during handoff of the remote unit (125) from a serving base station (130) to a neighboring base station, the remote unit (125) is attempted to be kept within the same call group, however should the same call group of the neighboring base station be filled, the remote unit (125) is placed in a second call group that is one call group prior to the current call group.

公开(公告)号：EP0563300B1

公开(公告)日：1999-04-21

申请号：EP92903693.7

申请日：1991-12-17

Applicant: MOTOROLA, INC.

Inventor： LABEDZ, Gerald, P. ,  KOTZIN, Michael, D. ,  SCHULER, Joseph, J. ,  ZIOLKO, Eric, F.

IPC: H04B7/005 ,  H04L25/30 ,  H04L25/03

CPC classification number: H04L25/03299 ,  H04L25/0218 ,  H04L25/0228

公开(公告)号：EP0558710B1

公开(公告)日：1999-03-17

申请号：EP92918760.7

申请日：1992-08-24

Applicant: MOTOROLA, INC.

Inventor： KOTZIN, Michael, D. ,  SPEAR, Stephen, L. ,  LEV, Valy

IPC: H04B7/26 ,  H04Q7/20

CPC classification number: H04W28/16 ,  H04B7/26 ,  H04W56/00 ,  H04W68/00 ,  H04W92/12

Abstract: A method and apparatus is disclosed for exchanging communicated signals between a remote base site (60, 61, 62, 63, 64 or 65) and central site (205) of a cellular system on a communication resource that is, upon occasion, also used in exchanging signals between the remote base site and mobile communication units.

公开(公告)号：EP0737399A1

公开(公告)日：1996-10-16

申请号：EP95930943.0

申请日：1995-08-25

Applicant: MOTOROLA, INC.

Inventor： KOTZIN, Michael, D. ,  BONTA, Jeffrey, D.

IPC: H04M11 ,  G07F7 ,  H04M15 ,  H04M17 ,  H04W8 ,  H04W92

CPC classification number: H04W8/265 ,  G06Q20/346 ,  G07F7/1008 ,  H04M15/00 ,  H04M17/00 ,  H04W8/205 ,  H04W8/24 ,  H04W8/26 ,  H04W92/18

Abstract: A smart card (100) is equipped with an internal time-of-day clock and calendar (106). Between the smart card (100) and a subscriber unit (209, 300), into which it is inserted, there is a communication of the subscriber's identity and a negotiated agreement for how long the subscriber unit (209, 300) is to maintain the transferred identity. For that duration of time, the subscriber unit (209, 300) is enabled with the subscriber's identity, and the smart card is essentially 'dumb', and therefore unusable until that duration has elapsed.

公开(公告)号：EP0705500A1

公开(公告)日：1996-04-10

申请号：EP95908001.0

申请日：1995-01-09

Applicant: MOTOROLA, INC.

Inventor： KOTZIN, Michael, D.

IPC: H04L1 ,  H04B1 ,  H04J11 ,  H04J13

CPC classification number: H04J13/0048 ,  H04B1/707 ,  H04B1/709 ,  H04J13/12

Abstract: A communication system utilizes multiple spreading codes to transmit high data rate information. The system codes high data rate user information (201) and partitions the coded information (202) into blocks comprised of two bits, B1 and B2. Based on the representation of bits B1 and B2, the system chooses one of a possible four spreading codes (W1 and W2 and their phase reversals W1' and W2') to be utilized for transmission. Once received, the transmitted signal is input into correlators (306, 309) specific to each spreading code W1 and W2, and the maximum absolute value output from the correlators (306, 309) is determined. From this determination, the transmitted spreading code W1, W2, W1' or W2' is determined. The use of multiple spreading codes allows for the transmission of high data rate information without altering the wireless air interface of the communication system.

公开(公告)号：EP0702863A1

公开(公告)日：1996-03-27

申请号：EP95907999.0

申请日：1995-01-09

Applicant: MOTOROLA, INC.

Inventor： KOTZIN, Michael, D. ,  STEWART, Kenneth, A.

IPC: H04J13 ,  G10L19 ,  H04B1 ,  H04B7 ,  H04L12 ,  H04W16 ,  H04W28 ,  H04W36

CPC classification number: H04W16/14 ,  G10L19/00 ,  H04L1/0014 ,  H04L2001/0093 ,  H04W28/22 ,  H04W36/18

Abstract: A code division multiple access (CDMA) communicating system reduces interference by reducing the encoding rate for selected mobiles. The system (400) primarily uses link related characteristics such as, inter alia, distance measurements, physical resource power, and mobile determined noise, to determine which mobiles require an encoding rate reduction. Once determined, the encoding rate of the determined mobiles is reduced, which in turn reduces self-interference and enhances system capacity.