Inter-system calling supporting inter-system soft handoff
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United States of America Patent
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Aug 17, 1999
Grant Date -
N/A
app pub date -
May 1, 1996
filing date -
May 1, 1996
priority date (Note) -
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Abstract
A method and apparatus for performing an inter-system soft handoff is described. In accordance with the present invention, when a subscriber unit crosses from a first cellular system to a second cellular system, a base station controller determines if sufficient network resources are available to conduct a inter-system soft handoff. If so, the base station controller generates a set of signaling messages that cause call processing resource to be allocated and for the call to be processed at the second cellular system. The base station controller then perform data-selection and data-broadcast for the call by transmitting data to the subscriber unit by way of the second cellular system as well as via one or more base stations to which the base station controller is directly coupled. The determination as to whether sufficient network resources are available to conduct the inter-system soft handoff is based on the type of connection that exists between the first cellular system and the second cellular system, the number of inter-system calls being conducted, and the frame offset of the call currently being processed.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
QUALCOMM INCORPORATED | 5775 MOREHOUSE DRIVE SAN DIEGO CA 92121-1714 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Karmi, Gadi | 1220 Cave St. #3, La Jolla, CA 92037 | 54 | 3359 |
Lee, Kuo-Chun | 17161 Alva Rd. #2013, San Diego, CA 92127 | 389 | 3857 |
Mohanty, Bibhu | 11553 Windcrest La. #257, San Diego, CA 92128 | 35 | 713 |
Sutton, Todd R | 11275 Caminito Rodar, San Diego, CA 92126 | 27 | 671 |
Ziv, Noam A | 10968 Corte Playa Barcelona, San Diego, CA 92124 | 32 | 1723 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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