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US5677909A
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Apparatus for exchanging data between a central station and a plurality of wireless remote stations on a time divided commnication channel
Assignee: Benhov GmbH LLC
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Filing: 1994-05-11
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Granted: 1997-10-14
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Expires: 2014-05-11
Abstract
Abstract An apparatus is provided for exchanging data between a central station and a plurality of wireless remote stations on a time division multiple access communication channel. The apparatus includes device for receiving access requests from remote stations of the plurality of remote stations during a first time interval under a contention based protocol and a non-contention based protocol and device for polling for data transfers during a second time period remote stations of the plurality of remote stations providing access requests under non-contention based protocols during the first time period.
Inventors
- 👤 Carolyn Heide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:41
CPC Classifications
H; H04; H04W; H04W74/00; H04W74/02; H04B; H04B10/00; H04B10/11; H04B10/112; H04B10/1123; H04B10/1125
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
100 words
An apparatus for exchanging data between a central station and a plurality of wireless remote stations on a time divided multiple access communication channel comprising: means for receiving access requests from remote stations of the plurality of remote stations during a first time interval under a contention based protocol and a non-contention based protocol; and means for authorizing a data transfer during a second time period by a remote station providing an access request under a non-contention based protocol of the plurality of remote stations providing access requests under the contention and non-contention based protocols during the first time period.
Claim 2
Independent Claim
100 words
An apparatus for exchanging data between a central station and a plurality of wireless remote stations on a time divided multiple access communication channel comprising: means for receiving access requests from remote stations of the plurality of remote stations during a first time interval under a contention based protocol and a non-contention based protocol; and means for authorizing a data transfer during a second time period by a remote station providing an access request under a non-contention based protocol of the plurality of remote stations providing access requests under the contention and non-contention based protocols during the first time period.
Claim 3
Dependent Claim
52 words
The apparatus as in claim 1 wherein the means for receiving access requests from remote stations of the plurality of remote stations during the first time interval under said contention based protocol and said non-contention based protocol further comprises a plurality of time division multiple access slots within the first time interval.
Claim 4
Dependent Claim
62 words
The apparatus as in claim 2 wherein the means for receiving access requests from remote stations of the plurality of remote stations during the first time interval under said contention based protocol and said non-contention based protocol further comprising means, located within a slot of the plurality of slots, for identifying contention slots and non-contention slots to the plurality of remote stations.
Claim 5
Dependent Claim
39 words
The apparatus as in claim 3 further comprising means for receiving an access request from a remote station of the plurality of remote stations within an identified contention slot and allocating a non-contention slot to the requesting remote station.
Claim 6
Independent Claim
107 words
An apparatus for reducing a duty-cycle of activation of a remote station exchanging data with a central station on a wireless time divided multiple access communication channel comprising: means for receiving an access request from the remote station during a first time interval under one of a contention based protocol and a non-contention based protocol; means for exchanging data during a second time period with the remote station providing the access request under the non-contention based protocol during the first time period for data transfers; and means for providing a temporal length of the first and second time periods to the remote station by the central station.
Claim 7
Independent Claim
107 words
An apparatus for reducing a duty-cycle of activation of a remote station exchanging data with a central station on a wireless time divided multiple access communication channel comprising: means for receiving an access request from the remote station during a first time interval under one of a contention based protocol and a non-contention based protocol; means for exchanging data during a second time period with the remote station providing the access request under the non-contention based protocol during the first time period for data transfers; and means for providing a temporal length of the first and second time periods to the remote station by the central station.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-10-13 | 2001-04-14 | 2001-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-13 | 2005-04-14 | 2005-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-13 | 2009-04-14 | 2009-10-14 | $7700.00 | Window Closed / Lapsed |