公开(公告)号：GB2269966A

公开(公告)日：1994-02-23

申请号：GB9319694

申请日：1992-02-25

Applicant: MOTOROLA INC

Inventor： HULSEBOSCH THOMAS G

IPC: H04W36/08 ,  H04W36/30 ,  H04W36/38 ,  H04J3/16 ,  H04B7/212 ,  H04Q7/02

Abstract: A radiotelephone system verifies the carrier/interference (C/I) of a selected target channel before handoff. The subscriber (125), communicating to a source base-station (130) on a source channel, measures the received signal strength indication (RSSI) of a target channel at a target base-station (135) when the channel is keyed (transmitting) and dekeyed (not transmitting). The subscriber (125) transfers the measurements to a source base-station (130) which determines the ratio of the RSSI with the keyed channel (C) to the RSSI with the dekeyed channel (I). If the ratio is greater than a predetermined threshold, the source base-station (130) transfers the subscriber (125) from the source channel to the target channel at the target base-station (135).

公开(公告)号：SE9703750L

公开(公告)日：1997-12-16

申请号：SE9703750

申请日：1997-10-15

Applicant: MOTOROLA INC

Inventor： HULSEBOSCH THOMAS G

IPC: H04W16/14 ,  H04W72/06 ,  H04W72/08 ,  H04W88/06 ,  H04W88/10 ,  H04Q7/38

公开(公告)号：MX9101264A

公开(公告)日：1992-05-04

申请号：MX9101264

申请日：1991-09-25

Applicant: MOTOROLA INC

Inventor： FELIX KENNETH A ,  WERRONEN ALTON P ,  HART THOMAS B ,  HARDMAN SCOTT A ,  HULSEBOSCH THOMAS G

IPC: H04W36/30 ,  H04B7/00 ,  H04M11/00

公开(公告)号：SE9703750D0

公开(公告)日：1997-10-15

申请号：SE9703750

申请日：1997-10-15

Applicant: MOTOROLA INC

Inventor： HULSEBOSCH THOMAS G

IPC: H04W16/14 ,  H04W72/06 ,  H04W72/08 ,  H04W88/06 ,  H04W88/10 ,  H04Q

公开(公告)号：GB2269966B

公开(公告)日：1995-08-02

申请号：GB9319694

申请日：1992-02-25

Applicant: MOTOROLA INC

Inventor： HULSEBOSCH THOMAS G

IPC: H04W36/08 ,  H04W36/30 ,  H04W36/38 ,  H04J3/16 ,  H04B7/212 ,  H04Q7/38

Abstract: A radiotelephone system verifies the carrier/interference (C/I) of a selected target channel before handoff. The subscriber (125), communicating to a source base-station (130) on a source channel, measures the received signal strength indication (RSSI) of a target channel at a target base-station (135) when the channel is keyed (transmitting) and dekeyed (not transmitting). The subscriber (125) transfers the measurements to a source base-station (130) which determines the ratio of the RSSI with the keyed channel (C) to the RSSI with the dekeyed channel (I). If the ratio is greater than a predetermined threshold, the source base-station (130) transfers the subscriber (125) from the source channel to the target channel at the target base-station (135).

公开(公告)号：MX173850B

公开(公告)日：1994-04-06

申请号：MX9101264

申请日：1991-09-25

Applicant: MOTOROLA INC

Inventor： HARDMAN SCOTT A ,  HULSEBOSCH THOMAS G ,  FELIX KENNETH A ,  WERRONEN ALTON P ,  HART THOMAS B

IPC: H04W36/30 ,  H04Q7/00

公开(公告)号：BR9604953A

公开(公告)日：1998-06-09

申请号：BR9604953

申请日：1996-12-13

Applicant: MOTOROLA INC

Inventor： HULSEBOSCH THOMAS G

IPC: H04W16/14 ,  H04W72/06 ,  H04W72/08 ,  H04W88/06 ,  H04W88/10 ,  H04B17/02

公开(公告)号：CA2089365C

公开(公告)日：1996-06-11

申请号：CA2089365

申请日：1991-08-16

Applicant: MOTOROLA INC

Inventor： FELIX KENNETH A ,  WERRONEN ALTON P ,  HART THOMAS B ,  HARDMAN SCOTT A ,  HULSEBOSCH THOMAS G

IPC: H04W36/30 ,  H04Q7/38 ,  H04B7/26

Abstract: A cellular system transfers a call from a source base-site (200) to one target base-site (205, 210). A source base-site (200) measures the signal strength (RSSIS) of a mobile (225), provides a forecasted signal strength (RSSIF) and sets up two time windows. The source base-site (200) sends the measured and forecasted signal strengths to candidate base-sites (205, 210) found by the mobile (225) which measure the mobile (225) signal strength (RSSIT) and compare it to (RSSIS + hysteresis value). If RSSIT> RSSIS, the call is transferred to the best responding cell. If RSSIT RSSIF at any candidate base-sites (205, 210), the call is transferred to the responding base-site (205, 210). If the source base-site (200) receives no responses during the second time window, the process ends.

公开(公告)号：CA2105381A1

公开(公告)日：1992-10-02

申请号：CA2105381

申请日：1992-02-25

Applicant: MOTOROLA INC

Inventor： HULSEBOSCH THOMAS G

IPC: H04W36/08 ,  H04W36/30 ,  H04W36/38

Abstract: A radiotelephone system verifies the carrier/interference (C/I) of a selected target channel before handoff. The subscriber (125), communicating to a source base-station (130) on a source channel, measures the received signal strength indication (RSSI) of a target channel at a target base-station (135) when the channel is keyed (transmitting) and dekeyed (not transmitting). The subscriber (125) transfers the measurements to a source base-station (130) which determines the ratio of the RSSI with the keyed channel (C) to the RSSI with the dekeyed channel (I). If the ratio is greater than a predetermined threshold, the source base-station (130) transfers the subscriber (125) from the source channel to the target channel at the target base-station (135).

公开(公告)号：MX9201486A

公开(公告)日：1992-10-01

申请号：MX9201486

申请日：1992-04-01

Applicant: MOTOROLA INC

Inventor： HULSEBOSCH THOMAS G

IPC: H04W36/08 ,  H04W36/30 ,  H04W36/38 ,  H04M19/08

Abstract: A radiotelephone system verifies the carrier/interference (C/I) of a selected target channel before handoff. The subscriber (125), communicating to a source base-station (130) on a source channel, measures the received signal strength indication (RSSI) of a target channel at a target base-station (135) when the channel is keyed (transmitting) and dekeyed (not transmitting). The subscriber (125) transfers the measurements to a source base-station (130) which determines the ratio of the RSSI with the keyed channel (C) to the RSSI with the dekeyed channel (I). If the ratio is greater than a predetermined threshold, the source base-station (130) transfers the subscriber (125) from the source channel to the target channel at the target base-station (135).