Claims
- 1. A radio communication system comprising:
a narrow-band radio base station having narrow-band transmission/reception means for data transmission; a wide-band radio base station having wide-band transmission means for data transmission; and a radio terminal having narrow-band transmission/reception means for transmitting/receiving data to/from said narrow-band radio base station and wide-band reception means for receiving data from said wide-band radio base station, wherein said radio terminal measures a received signal strength indicator of a signal transmitted from said narrow-band radio base station, and performs handover processing for said narrow-band radio base station when the measurement result is lower than a predetermined handover threshold level, and said radio terminal includes means for changing the handover threshold level when data is received from said wide-band radio base station.
- 2. A radio communication system comprising:
a narrow-band radio base station having narrow-band transmission/reception means for data transmission; a wide-band radio base station having wide-band transmission means for data transmission; and a radio terminal having narrow-band transmission/reception means for transmitting/receiving data to/from said narrow-band radio bane station and wide band reception means far receiving data from said wide-band radio base station, wherein said radio terminal measures a received signal strength indicator of a signal transmitted from said narrow-band radio base station, performs handover processing for said narrow-band radio base station when the measurement result is lower than a predetermined handover threshold level, and performs the handover processing when no data is received from said wide-band radio base station.
- 3. A radio communication system comprising:
a narrow-band radio base station having narrow-band transmission/reception means for data transmission; a wide-band radio base station having wide-band transmission means for data transmission; a server for providing a predetermined service through said radio base stations; and a radio terminal having narrow-band transmission reception means for transmitting/receiving data to/from said narrow-band radio base station and wide-band reception means for receiving data from said wide-band radio base station, wherein said radio terminal includes means for measuring a received signal strength indicator of a signal transmitted from said narrow-band radio base station, and means for transmitting a signal for stopping data transmission from said server to said wide-band radio base station when the measurement result is lower than a predetermined threshold level.
- 4. A system according to claim 3, wherein the threshold level in said radio terminal is set to be not less than the handover threshold.
Priority Claims (3)
Number |
Date |
Country |
Kind |
8-006665 |
Jan 1996 |
JP |
|
8-009531 |
Jan 1996 |
JP |
|
8-009532 |
Jan 1996 |
JP |
|
CROSS-REFERENCE TO A RELATED APPLICATION
[0001] This application is based upon and claims the benefit of priority under 35 U.S.C. §120 and is a divisional application of parent application Ser. No. 09/427,487, filed Oct. 27, 1999, which is a divisional application of Ser. No. 08/784,526, filed Jan. 17, 1997 and under 35 U.S.C. §119 from Japanese Patent Application Nos. 8-006665, filed Jan. 18, 1996; 8-009531, filed Jan. 23, 1996; and 8-009532, filed Jan. 23, 1996, the entire contents of which are incorporated herein by reference.
Divisions (2)
|
Number |
Date |
Country |
Parent |
09427487 |
Oct 1999 |
US |
Child |
10846651 |
May 2004 |
US |
Parent |
08784526 |
Jan 1997 |
US |
Child |
09427487 |
Oct 1999 |
US |