公开(公告)号：AU8875491A

公开(公告)日：1992-08-27

申请号：AU8875491

申请日：1991-10-16

Applicant: MOTOROLA INC

Inventor： CHANG HUNGKUN J ,  DOSS WILLIAM KEVIN ,  NOLAN MICHAEL P ,  BUCCHOLZ DALE R ,  FREEBURG THOMAS A ,  MCKOWN JOHN ,  WHITE RICHARD E

IPC: H04B1/18 ,  H04B7/00 ,  H04B7/08 ,  H04B7/26 ,  H04W16/24 ,  H04W72/08 ,  H04B17/02 ,  H01Q3/02 ,  H04Q7/00

Abstract: An antenna selection technique is used in an RF communication system in which user modules (UM1-UM5) communicate with at least one node (N1-N2). The UM's (UM1-UM5) and nodes (N1, N2) each have multiple antennae. The combination of each UM and node antenna is evaluated at the UM. Based on at least signal quality, the UM (UM1-UM5) selects its antenna and the best node antenna for use. An alternate antenna is selected if a person is determined to be present in a predetermined area adjacent a UM (UM1-UM5) corresponding to a predetermined RF power level.

公开(公告)号：IN180856B

公开(公告)日：1998-03-28

申请号：IN79DE1991

申请日：1991-01-29

Applicant: MOTOROLA INC

Inventor： BUCHHOLZ DALE ROBERT ,  CHANG HUNGKUN JAMES ,  DOSS WILLIAM KEVIN ,  WESSELMAN BRIAN JOSEPH

IPC: H04L1/00

公开(公告)号：CA2098578C

公开(公告)日：1997-02-18

申请号：CA2098578

申请日：1991-10-16

Applicant: MOTOROLA INC

Inventor： CHANG HUNGKUN J ,  DOSS WILLIAM KEVIN ,  NOLAN MICHAEL P ,  BUCHHOLZ DALE R ,  FREEBURG THOMAS A ,  MCKOWN JOHN ,  WHITE RICHARD E

IPC: H04B1/18 ,  H04B7/00 ,  H04B7/08 ,  H04B7/26 ,  H04W16/24 ,  H04W72/08 ,  H04Q7/32 ,  H04B7/06

Abstract: An antenna selection technique is used in an RF communication system in which user modules (UM1-UM5) communicate with at least one node (N1-N2). The UM's (UM1-UM5) and nodes (N1,N2) each have multiple antennae. The combination of each UM and node antenna is evaluated at the UM. Based on at least signal quality, the UM (UM1-UM5) selects its antenna and the best node antenna for use. An alternate antenna is selected if a person is determined to be present in a predetermined area adjacent a UM (UM1-UM5) corresponding to a predetermined RF power level.

公开(公告)号：AU3822995A

公开(公告)日：1996-06-26

申请号：AU3822995

申请日：1995-09-25

Applicant: MOTOROLA INC

Inventor： VOOK FREDERIK WERNER ,  DOSS WILLIAM KEVIN ,  MUEHLFELD ALAN DAVID ,  NGUYEN MAI TAN ,  SHAVER JOHN EDWARD ,  WESSELMAN BRIAN JOSEPH

IPC: H04B1/7156 ,  H04B7/26 ,  H04B1/713 ,  H04L7/00

Abstract: A method for a synchronizing user devices (12) performing handoffs includes providing a set of location synchronizing frequencies and data frequencies selected from a hopping set used by network access points (14). Each AP transmits synchronizing data (36) at the synchronizing frequencies during a portion of a short dwell (32), the short dwells (32) being interleaved between long dwells (30). When a user device (12) attempt a handoff, it tunes to at least one of the synchronizing frequencies and receives synchronizing information (36). The user device (12) then selects one AP (14) for link transfer and synchronizes its operation to the hopping set used by the selected AP (14).

公开(公告)号：AU653971B2

公开(公告)日：1994-10-20

申请号：AU8875491

申请日：1991-10-16

Applicant: MOTOROLA INC

Inventor： CHANG HUNGKUN J ,  DOSS WILLIAM KEVIN ,  NOLAN MICHAEL P ,  BUCCHOLZ DALE R ,  FREEBURG THOMAS A ,  MCKOWN JOHN ,  WHITE RICHARD E

IPC: H04B1/18 ,  H04B7/00 ,  H04B7/08 ,  H04B7/26 ,  H04W16/24 ,  H04W72/08 ,  H04B7/04 ,  H04B7/06

Abstract: An antenna selection technique is used in an RF communication system in which user modules (UM1-UM5) communicate with at least one node (N1-N2). The UM's (UM1-UM5) and nodes (N1, N2) each have multiple antennae. The combination of each UM and node antenna is evaluated at the UM. Based on at least signal quality, the UM (UM1-UM5) selects its antenna and the best node antenna for use. An alternate antenna is selected if a person is determined to be present in a predetermined area adjacent a UM (UM1-UM5) corresponding to a predetermined RF power level.

公开(公告)号：EP0567459A4

公开(公告)日：1994-08-24

申请号：EP91919540

申请日：1991-10-16

Applicant: MOTOROLA INC

Inventor： CHANG HUNGKUN J ,  DOSS WILLIAM KEVIN ,  NOLAN MICHAEL P ,  BUCCHOLZ DALE R ,  FREEBURG THOMAS A ,  MCKOWN JOHN ,  WHITE RICHARD E

IPC: H04B1/18 ,  H04B7/00 ,  H04B7/08 ,  H04B7/26 ,  H04W16/24 ,  H04W72/08

CPC classification number: H04W72/085 ,  H04B7/088 ,  H04W16/24 ,  H04W72/02

Abstract: An antenna selection technique is used in an RF communication system in which user modules (UM1-UM5) communicate with at least one node (N1-N2). The UM's (UM1-UM5) and nodes (N1, N2) each have multiple antennae. The combination of each UM and node antenna is evaluated at the UM. Based on at least signal quality, the UM (UM1-UM5) selects its antenna and the best node antenna for use. An alternate antenna is selected if a person is determined to be present in a predetermined area adjacent a UM (UM1-UM5) corresponding to a predetermined RF power level.