Claims
- 1. Signal processing circuitry, for use in a mobile station capable of receiving a downlink signal from each of a plurality of base stations and transmitting an uplink signal to the plurality of base stations through a wireless channel, said signal processing circuitry comprising:a processor which produces a measure of a signal quality of the downlink signals received from the plurality of base stations in a soft handoff mode with said mobile station, selects a base station from which a downlink signal shows a preferred signal quality, and controls transmission of the uplink signal to indicate the selected base station, among the plurality of base stations, for subsequent communication with the mobile station, wherein while in said soft handoff mode, said processor periodically re-selecting a base station from which the downlink signal shows the best signal quality and transmitting the uplink signal indicating the selected base station, among the plurality of base stations in said soft hand-off mode.
- 2. The signal processing circuitry as claimed in claim 1, wherein the signal quality of the downlink signals from the plurality of base stations is represented by signal strengths of the received downlink signals.
- 3. The signal processing circuitry of claim 1,wherein said selected base station transmits a subsequent downlink signal to the mobile station while said plurality of base stations continue in said soft hand-off mode with the mobile station, and a downlink power of said plurality of base stations is controlled according to whether a particular base station is a selected base station.
- 4. The signal processing circuitry of claim 1,wherein said mobile station receiving the next downlink signal from at least the selected base station while maintaining the soft handoff mode with the base stations in said soft hand-off mode which are not selected base stations.
- 5. The signal processing circuitry of claim 1,wherein said mobile station receiving a next downlink signal from one or more selected base stations in the soft hand-off mode, the signal processing circuitry providing an identification for each base station in the soft hand-off made while maintaining the soft handoff mode with the base stations.
- 6. Signal processing circuitry, far use in a mobile station in which said mobile station is capable of receiving a downlink signal from each of a set of base stations in a soft hand-off mode with the mobile station and transmitting an uplink signal to the set of base stations through a wireless channel, said signal processing circuitry comprising:a selection unit producing a measure of signal quality of the downlink signals from the set of base stations in said soft hand-off mode with the mobile station and selecting a base station from which the downlink signal shows a preferred signal quality; a transmitter transmitting the uplink signal including an identification of the selected base station among the set of base stations in a soft hand-off mode. wherein said selection unit, while said mobile station is in said soft handoff mode, periodically re-selecting a base station from which the downlink signal shows the preferred signal quality and transmitting the uplink signal indicating the selected base station, among the plurality of base stations in said soft hand-off mode.
- 7. The signal processing circuitry of claim 6, wherein said mobile station receives a subsequent downlink signal from the selected base station while the non-selected base stations continue in said soft hand-off mode.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9810424 |
May 1998 |
GB |
|
Parent Case Info
This application is a divisional of Ser. No. 09/696,574, filed Oct. 25, 2000, now U.S. Pat. No. 6,603,971, which is a continuation of PCT application Ser. No. PCT/GB99/01347, filed on Apr. 28, 1999.
US Referenced Citations (17)
Foreign Referenced Citations (29)
Number |
Date |
Country |
0 577 322 |
Jan 1994 |
EP |
0 645 940 |
Mar 1995 |
EP |
0 797367 |
Sep 1997 |
EP |
2 012 525 |
Jul 1979 |
GB |
2 242 337 |
Sep 1991 |
GB |
2 337 414 |
Nov 1999 |
GB |
6-45978 |
Feb 1994 |
JP |
6-188820 |
Jul 1994 |
JP |
7-274232 |
Oct 1995 |
JP |
7-298335 |
Nov 1995 |
JP |
7-298336 |
Nov 1995 |
JP |
8-505028 |
May 1996 |
JP |
8-223629 |
Aug 1996 |
JP |
9-247732 |
Sep 1997 |
JP |
9-261725 |
Oct 1997 |
JP |
10-28282 |
Jan 1998 |
JP |
10-79985 |
Mar 1998 |
JP |
10-510688 |
Oct 1998 |
JP |
2991185 |
Oct 1999 |
JP |
2002-199431 |
Jul 2002 |
JP |
9319537 |
Sep 1993 |
WO |
9504420 |
Feb 1995 |
WO |
9532594 |
Nov 1995 |
WO |
9608119 |
Mar 1996 |
WO |
9618277 |
Jun 1996 |
WO |
9619088 |
Jun 1996 |
WO |
9708911 |
Mar 1997 |
WO |
9741652 |
Nov 1997 |
WO |
9815152 |
Apr 1998 |
WO |
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/GB99/01347 |
Apr 1999 |
US |
Child |
09/696574 |
|
US |