Radio communications system and method for mobile assisted handover between a private network and a public mobile network
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United States of America Patent
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Aug 29, 2000
Grant Date -
N/A
app pub date -
Aug 30, 1996
filing date -
Aug 30, 1996
priority date (Note) -
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Abstract
Mobile handover between a private radio communications network connected to the public switch telephone network and a public land mobile network also connected to the public switch telephone network are provided by a radio communications mobile terminal supporting simultaneous communication connections between the two uncoordinated networks. The mobile terminal monitors a base station of the public land mobile network during idle frames of communication connections with the private radio communications network, thereby synchronizing the mobile terminal to both the base of the public land mobile network and the private radio communications network. Call interruption is prevented during handover by maintaining simultaneous communications with the private radio communications network and the public land mobile network through the use of two half-rate channels or dual-slot communications where both the public land mobile network and private radio communications network operate pursuant to compatible TDMA standards. Handover is initiated when the mobile terminal detects a signal quality which violates a predetermined switching criteria and passes the PSTN phone line number of the private radio communications network to the base station of the public land mqbile network which in turn requests re-routing of the call from the PSTN switch.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- OPTIS CELLULAR TECHNOLOGY, LLC
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Haartsen, Jacobus Cornelis | Staffanstorp, SE | 110 | 3052 |
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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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