Patent US5134615A successfully refreshed from Google Patents.
US5134615A
Expired / Lapsed
US
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Frequency agile tdma communications system
Assignee: Google Technology Holdings LLC
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Filing: 1990-10-05
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Granted: 1992-07-28
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Expires: 2010-10-05
Abstract
Abstract An intelligent communcations node is capable of dynamically selecting frequency and time slot assignments for communications with remote communication devices having different communication protocols including different available frequencies and time slots in a TDMA system. A frequency agile transmitter and receiver combined with an adaptable time slot selector enables communications with remote devices utilizing different protocols. The time and frequency management capabilities of the node makes greater spectral efficiencies possible.
Inventors
- 👤 Thomas A. Freeburg
- 👤 Willy Gehardt
- 👤 John Ley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:10
CPC Classifications
H; H04; H04J; H04J4/00; H04B; H04B7/00; H04B7/24; H04B7/26; H04B7/2615
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
218 words
In a communications system having a node and at least first and second time division multiple access (TDMA) remote devices, the first device having a first communications protocol utilizing first frequencies and time slots, the second device having a second communications protocol utilizing second frequencies and time slots, the first protocol being different from the second protocol, the improvement in the node comprising: means for selectively receiving signals from said first and second devices on said first and second frequencies and generating received composite data; means for separating said received composite data into corresponding data channels in accord with said first and second time slots utilized by said first and second remote devices; means for combining data from user data channels coupled to said node to form composite user data in accord with said first and second time slots utilized by said first and second remote devices; means for selectively transmitting signals representing said composite user data to said first and second devices on said first and second frequencies; means for switching receiving and transmitting frequencies used by said receiving and transmitting means so that the receiving and transmitting frequencies correspond to said transmitting and receiving frequencies used by said first and second remote devices, respectively, when signals are being communicated between said remote devices and the node.
Claim 2
Dependent Claim
218 words
In a communications system having a node and at least first and second time division multiple access (TDMA) remote devices, the first device having a first communications protocol utilizing first frequencies and time slots, the second device having a second communications protocol utilizing second frequencies and time slots, the first protocol being different from the second protocol, the improvement in the node comprising: means for selectively receiving signals from said first and second devices on said first and second frequencies and generating received composite data; means for separating said received composite data into corresponding data channels in accord with said first and second time slots utilized by said first and second remote devices; means for combining data from user data channels coupled to said node to form composite user data in accord with said first and second time slots utilized by said first and second remote devices; means for selectively transmitting signals representing said composite user data to said first and second devices on said first and second frequencies; means for switching receiving and transmitting frequencies used by said receiving and transmitting means so that the receiving and transmitting frequencies correspond to said transmitting and receiving frequencies used by said first and second remote devices, respectively, when signals are being communicated between said remote devices and the node.
Claim 3
Dependent Claim
23 words
The communications system according to claim 1 further comprising means for identifying time slots to be used by the first and second devices.
Claim 4
Dependent Claim
23 words
The communications system according to claim 2 further comprising means for identifying the frequencies to be used by the first and second devices.
Claim 5
Dependent Claim
23 words
The communication system according to claim 2 further comprising means for identifying the frequencies to be used by the first and second devices.
Claim 6
Dependent Claim
29 words
The communications system according to claim 1 wherein said separating means comprises a time slot selector that synchronizes the received composite data into separate data bound for separate users.
Claim 7
Dependent Claim
46 words
The communications system according to claim 1 wherein said combining means comprises a time slot selector that synchronizes data from separate users into a single stream of data corresponding in time to the first and second time slots used by the first and second remote devices.
Claim 8
Dependent Claim
210 words
In a communications system having a node and at least first and second time division multiple access (TDMA) remote devices, the first device having a first communications protocol utilizing first frequencies and time slots, the second device having a second communications protocol utilizing second frequencies and time slots, the first protocol being different from the second protocol, a node communication method comprising the steps of: selectively receiving signals from said first and second devices on said first and second frequencies and generating received composite data; separating said received composite data into corresponding data channels in accord with said first and second time slots utilized by said first and second remote devices; combining data from user data channels coupled to said node to form composite user data in accord with said first and second time slots utilized by said first and second remote devices; selectively transmitting signals representing said composite user data to said first and second devices on said first and second frequencies; switching receiving and transmitting frequencies used by said receiving and transmitting steps so that the receiving and transmitting frequencies correspond to said transmitting and receiving frequencies used by said first and second remote devices, respectively, when signals are being communicated between said remote devices and the node.
Claim 9
Dependent Claim
210 words
In a communications system having a node and at least first and second time division multiple access (TDMA) remote devices, the first device having a first communications protocol utilizing first frequencies and time slots, the second device having a second communications protocol utilizing second frequencies and time slots, the first protocol being different from the second protocol, a node communication method comprising the steps of: selectively receiving signals from said first and second devices on said first and second frequencies and generating received composite data; separating said received composite data into corresponding data channels in accord with said first and second time slots utilized by said first and second remote devices; combining data from user data channels coupled to said node to form composite user data in accord with said first and second time slots utilized by said first and second remote devices; selectively transmitting signals representing said composite user data to said first and second devices on said first and second frequencies; switching receiving and transmitting frequencies used by said receiving and transmitting steps so that the receiving and transmitting frequencies correspond to said transmitting and receiving frequencies used by said first and second remote devices, respectively, when signals are being communicated between said remote devices and the node.
Claim 10
Dependent Claim
24 words
The communications method according to claim 7 further comprising the step of identifying time slots to be used by the first and second devices.
Claim 11
Dependent Claim
24 words
The communications method according to claim 7 further comprising the step of identifying the frequencies to be used by the first and second devices.
Claim 12
Dependent Claim
24 words
The communications method according to claim 8 further comprising the step of identifying the frequencies to be used by the first and second devices.
Claim 13
Dependent Claim
24 words
The communications method according to claim 7 wherein said separating step comprises synchronizing the received composite data into separate data bound for separate users.
Claim 14
Dependent Claim
41 words
The communications method according to claim 7 wherein said combining step comprises synchronizing data from separate users into a single stream of data corresponding in time to the first and second time slots used by the first and second remote devices.
Claim 15
Dependent Claim
173 words
A communications node for communicating with at least first and second time division multiple access (TDMA) remote devices having different time and frequency protocols comprising: means for selectively receiving signals from first and second remote communication devices on first and second frequencies and generating received composite data; means for separating said received composite data into corresponding data channels in accord with first and second time slots utilized by said first and second remote devices; means for combining data from user data channels coupled to said node to form composite user data in accord with said first and second time slots utilized by said first and second remote devices; means for selectively transmitting signals representing said composite user data to said first and second devices on said first and second frequencies; means for switching receiving and transmitting frequencies used by said receiving and transmitting means to correspond to said transmitting and receiving frequencies used by said first and second remote devices, respectively, when signals are being communicated between said remote devices and the node.
Claim 16
Dependent Claim
173 words
A communications node for communicating with at least first and second time division multiple access (TDMA) remote devices having different time and frequency protocols comprising: means for selectively receiving signals from first and second remote communication devices on first and second frequencies and generating received composite data; means for separating said received composite data into corresponding data channels in accord with first and second time slots utilized by said first and second remote devices; means for combining data from user data channels coupled to said node to form composite user data in accord with said first and second time slots utilized by said first and second remote devices; means for selectively transmitting signals representing said composite user data to said first and second devices on said first and second frequencies; means for switching receiving and transmitting frequencies used by said receiving and transmitting means to correspond to said transmitting and receiving frequencies used by said first and second remote devices, respectively, when signals are being communicated between said remote devices and the node.
Claim 17
Dependent Claim
22 words
The node according to claim 13 further comprising means for identifying time slots to be used by the first and second devices.
Claim 18
Dependent Claim
22 words
The node according to claim 13 further comprising means for identifying the frequencies to be used by the first and second devices.
Claim 19
Dependent Claim
22 words
The node according to claim 14 further comprising means for identifying the frequencies to be used by the first and second devices.
Claim 20
Dependent Claim
28 words
The node according to claim 13 wherein said separating means comprises a time slot selector that synchronizes the received composite data into separate data bound for separate users.
Claim 21
Dependent Claim
45 words
The node according to claim 13 wherein said combining means comprises a time slot selector that synchronizes data from separate users into a single stream of data corresponding in time to the first and second time slots used by the first and second remote devices.
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) | 1995-07-28 | 1996-01-27 | 1996-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-28 | 2000-01-27 | 2000-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-28 | 2004-01-27 | 2004-07-28 | $7700.00 | Window Closed / Lapsed |