US5018138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protocol for network having a plurality of intelligent cells
Assignee: Echelon Systems Corp
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Filing: 1988-11-08
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Granted: 1991-05-21
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Expires: 2008-11-08
Abstract
Abstract A network for sensing, communicating and controlling where a plurality of cells communicate with one another through packets. When a cell receives a packet, it determines the baud rate of the received packet and stores this rate. In replying to the packet a cell uses a backoff algorithm to determine how many slots it must wait before replying. The duration of these slots is determined based upon the stored baud rate.
Inventors
- 👤 William B. Twitty
- 👤 Wendell B. Sander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:47
CPC Classifications
G; G08; G08C; G08C15/00; H; H02; H02J; H02J13/00; H02J13/13; H02J13/1311; H05; H05B; H05B47/00; H05B47/10; H05B47/155; Y; Y02; Y02B; Y02B20/00; Y02B20/40; Y02B70/00; Y02B70/30; Y04; Y04S; Y04S20/00; Y04S20/20; Y04S20/242; Y04S20/246
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
78 words
In a network for sensing, communicating and controlling where a plurality of cells communicate with one another through packets, an improvement comprising the steps of: each cell determining the baud rate of a received packet; each cell storing said baud rate within said cell; any of said cells replying to said packet, using said stored baud rate in computing durations of slots, and using a backoff algorithm to determine how many of said slots to wait before replying.
Claim 2
Dependent Claim
78 words
In a network for sensing, communicating and controlling where a plurality of cells communicate with one another through packets, an improvement comprising the steps of: each cell determining the baud rate of a received packet; each cell storing said baud rate within said cell; any of said cells replying to said packet, using said stored baud rate in computing durations of slots, and using a backoff algorithm to determine how many of said slots to wait before replying.
Claim 3
Dependent Claim
25 words
The method defined by claim 1 wherein said stored baud rate is used by said cells as a transmission rate for transmitting a reply packet.
Claim 4
Dependent Claim
85 words
In a network for sensing, communicating and controlling where a plurality of cells communicate with one another through packets, an improvement comprising the steps of: determining the baud rate of a received packet by a receiving of one of said cells; storing said baud rate within said receiving cell; replying to said packet by said receiving cell, said receiving cell using a backoff algorithm to determine when to reply, said backoff algorithm using said stored baud rate in determining the duration to wait before replying.
Claim 5
Dependent Claim
85 words
In a network for sensing, communicating and controlling where a plurality of cells communicate with one another through packets, an improvement comprising the steps of: determining the baud rate of a received packet by a receiving of one of said cells; storing said baud rate within said receiving cell; replying to said packet by said receiving cell, said receiving cell using a backoff algorithm to determine when to reply, said backoff algorithm using said stored baud rate in determining the duration to wait before replying.
References Cited (Backward Citations)
US4802189A
Cited
US4756007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-20 | 1994-11-19 | 1995-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-20 | 1998-11-19 | 1999-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-20 | 2002-11-19 | 2003-05-21 | $7700.00 | Window Closed / Lapsed |