US5231635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiplexed transmission system for subscriber units of different types
Assignee: US Philips Corp
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Filing: 1991-10-04
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Granted: 1993-07-27
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Expires: 2011-10-04
Abstract
Abstract A plurality of subscriber units are connected to at least two transceiver stations for exchanging information in a time division multiple access mode, in which traffic time intervals are allocated in rotation to a variable number C of channels, where C is dependent on the number and type of units to be connected. T intervals plus one control time interval form a frame, where T is mutually prime with respect to the numbers 2 through C MAX . M frames form a superframe, where M is the lowest common multiple of the numbers 1 through C MAX .
Inventors
- 👤 Jean-Francois Travers
- 👤 Jacques Briand
- 👤 Yvon Guedes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:08
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/24; H04B7/26; H04B7/2643
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
116 words
A transmission system comprising a plurality of subscriber units connected to at least two transceiver stations for exchanging information in a time-division multiplex mode, said information being transmitted in a plurality of series of T traffic time intervals which are allocated to a variable number C of channels depending on the number and type of subscriber units to be connected, characterized in that a control time interval is provided between each of said series of T time intervals, the number of channels is less than or equal to C MAX , and in that T is a number which is mutually prime with respect to all the numbers C=2, . . . , C MAX .
Claim 2
Dependent Claim
116 words
A transmission system comprising a plurality of subscriber units connected to at least two transceiver stations for exchanging information in a time-division multiplex mode, said information being transmitted in a plurality of series of T traffic time intervals which are allocated to a variable number C of channels depending on the number and type of subscriber units to be connected, characterized in that a control time interval is provided between each of said series of T time intervals, the number of channels is less than or equal to C MAX , and in that T is a number which is mutually prime with respect to all the numbers C=2, . . . , C MAX .
Claim 3
Dependent Claim
60 words
A system as claimed in claim 1, characterized in that each said series of T time intervals and a respective one of said control time intervals adjoining the series constitute a frame, and information is transmitted as a multi-frame having M frames, where M is the lowest common multiple of the numbers C=1, . . . , C MAX .
Claim 4
Dependent Claim
70 words
Transmission system as claimed in one of the claim 1, comprising a first transceiver station called the base station and at least two transceiver stations called mobile stations, characterized in that the information signals are transmitted directly by the mobile stations in traffic time intervals, whereas the control information signals for setting up and terminating the communication are transmitted to and from the base station in said control time intervals.
Claim 5
Dependent Claim
97 words
Transmission system as claimed in claim 3, comprising a first transceiver station termed base station and at least two transceiver stations termed mobile stations, characterized in that the control time interval can be used for communications in the half-duplex mode, for transmitting information signals from mobile station to mobile station without the intervention of the base station, these communications being synchronized with and under the control of the base station in the same control time interval, the base station in this case managing establishing or terminating the communication and the distribution of the frequencies and time intervals.
Claim 6
Dependent Claim
98 words
Transmission system as claimed in claim 1, comprising a first transceiver station termed base station and at least two transceiver stations termed mobile stations, characterized in that the control time interval can be used for communications in the half-duplex mode for transmitting information signals from the mobile station to mobile station without the intervention of the base station, these communications being synchronized with and under the control of the base station in the same control time interval, the base station in this case managing establishing or terminating the communication and the distribution of the frequencies and time intervals.
Claim 7
Dependent Claim
89 words
Transmission system as claimed in claim 2, comprising a first transceiver stations termed mobile stations, characterized in that the control time interval can be used for communications in the half-duplex mode for transmitting information signals from the mobile station to mobile station without the intervention of the base station, these communications being synchronized with and under the control of the base station in the same control time interval, the base station in this case managing establishing or terminating the communication and the distribution of the frequencies and time intervals.
Claim 8
Dependent Claim
67 words
Transmission system as claimed in claim 2, comprising a first transceiver station called the base station and at least two transceiver stations called mobile stations, characterized in that the information signals are transmitted directly by the mobile stations in traffic time intervals, whereas the control information signals for setting up and terminating the communication are transmitted to and from the base station in said control time intervals.
Claim 9
Dependent Claim
98 words
Transmission system as claimed in claim 7, comprising a first transceiver station termed base station and at least two transceiver stations termed mobile stations, characterized in that the control time interval can be used for communications in the half-duplex mode for transmitting information signals from the mobile station to mobile station without the intervention of the base station, these communications being synchronized with and under the control of the base station in the same control time interval, the base station in this case managing establishing or terminating the communication and the distribution of the frequencies and time intervals.
Claim 10
Dependent Claim
142 words
A transmission system comprising a plurality of subscriber units connected to at least two transceiver stations for exchanging information in a time-division multiplex mode, said information being transmitted in a plurality of series of T traffic time intervals which are allocated to a variable number C of channels depending on the number and type of subscriber units to be connected, characterized in that a control time interval is provided between each of said series of T time intervals, the number of channels is less than or equal to C MAX , and each said series of T time intervals and a respective one of said control time intervals adjoining the series constitute a frame, and information is transmitted as a multi-frame having M frames, where M is the lowest common multiple of the numbers C=1, . . . , C MAX .
Claim 11
Dependent Claim
142 words
A transmission system comprising a plurality of subscriber units connected to at least two transceiver stations for exchanging information in a time-division multiplex mode, said information being transmitted in a plurality of series of T traffic time intervals which are allocated to a variable number C of channels depending on the number and type of subscriber units to be connected, characterized in that a control time interval is provided between each of said series of T time intervals, the number of channels is less than or equal to C MAX , and each said series of T time intervals and a respective one of said control time intervals adjoining the series constitute a frame, and information is transmitted as a multi-frame having M frames, where M is the lowest common multiple of the numbers C=1, . . . , C MAX .
Claim 12
Dependent Claim
67 words
Transmission system as claimed in claim 9, comprising a first transceiver station called the base station and at least two transceiver stations called mobile stations, characterized in that the information signals are transmitted directly by the mobile stations in traffic time intervals, whereas the control information signals for setting up and terminating the communication are transmitted to and from the base station in said control time intervals.
Claim 13
Dependent Claim
98 words
Transmission system as claimed in claim 10, comprising a first transceiver station termed base station and at least two transceiver stations termed mobile stations, characterized in that the control time interval can be used for communications in the half-duplex mode for transmitting information signals from the mobile station to mobile station without the intervention of the base station, these communications being synchronized with and under the control of the base station in the same control time interval, the base station in this case managing establishing or terminating the communication and the distribution of the frequencies and time intervals.
Claim 14
Dependent Claim
98 words
Transmission system as claimed in claim 9, comprising a first transceiver station termed base station and at least two transceiver stations termed mobile stations, characterized in that the control time interval can be used for communications in the half-duplex mode for transmitting information signals from the mobile station to mobile station without the intervention of the base station, these communications being synchronized with and under the control of the base station in the same control time interval, the base station in this case managing establishing or terminating the communication and the distribution of the frequencies and time intervals.
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) | 1996-07-26 | 1997-01-25 | 1997-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-26 | 2001-01-25 | 2001-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-26 | 2005-01-25 | 2005-07-27 | $7700.00 | Window Closed / Lapsed |