Patent US5943333A successfully refreshed from Google Patents.
US5943333A
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Radio communications device and method
Assignee: Google Technology Holdings LLC
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Filing: 1995-07-27
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Granted: 1999-08-24
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Expires: 2015-07-27
Abstract
Abstract A radio communications device is arranged to communicate time divided signals (60 and 70) over first (40) and second (50) time discontinuous systems having first and second frame structures respectively. Switching device (120) switches between communicating signals (60) over the first system (40) during time periods of the first frame structure and communicating signals (70) over the second system (50) during time periods of the second frame structure. Hence over a given period of time the device simultaneously communicates time divided signals over the first (40) and second (50) systems.
Inventors
- 👤 Nicholas William Whinnett
- 👤 William Neil Robinson
- 👤 Jonathan Alastair Gibbs
- 👤 Anthony P Van Den Heuvel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:50
CPC Classifications
H; H04; H04W; H04W36/00; H04W36/14; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/403; H04B1/406; H04W36/16; H04W36/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
150 words
A method of handoff from a first time discontinuous system to a second time discontinuous system by a radio communications device comprising the steps of, establishing a call with a remote user via the first time discontinuous system; establishing communication with the second time discontinuous system while continuing the call via the first time discontinuous system during a handoff period; invoking a contention scheme to determine which of the first and second time discontinuous systems is in communication with the remote user during the handoff period; and handing off from the first to the second time discontinuous system whilst maintaining the call to the remote user via the second time discontinuous system, wherein the contention scheme manages the communications activities of the device during the handoff period such that contention between the communication of the first and the second time discontinuous systems is substantially resolved and the call is maintained.
Claim 2
Independent Claim
150 words
A method of handoff from a first time discontinuous system to a second time discontinuous system by a radio communications device comprising the steps of, establishing a call with a remote user via the first time discontinuous system; establishing communication with the second time discontinuous system while continuing the call via the first time discontinuous system during a handoff period; invoking a contention scheme to determine which of the first and second time discontinuous systems is in communication with the remote user during the handoff period; and handing off from the first to the second time discontinuous system whilst maintaining the call to the remote user via the second time discontinuous system, wherein the contention scheme manages the communications activities of the device during the handoff period such that contention between the communication of the first and the second time discontinuous systems is substantially resolved and the call is maintained.
Claim 3
Dependent Claim
19 words
The method of claim 1, wherein the contention scheme is based on known characteristics of the time discontinuous systems.
Claim 4
Dependent Claim
41 words
The method of claim 1, wherein if only the first time discontinuous system has signal coding and interleaving, the contention scheme is arranged to suspend communicating signals over the first system in favor of the second system when a contention occurs.
Claim 5
Dependent Claim
36 words
The method of claim 1, wherein if the first and the second time discontinuous systems are similar, the contention scheme is arranged to alternately suspend communicating signals from each of the first and the second systems.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-08-23 | 2003-02-22 | 2003-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-23 | 2007-02-22 | 2007-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-23 | 2011-02-22 | 2011-08-24 | $7700.00 | Window Closed / Lapsed |