Patent US5875184A successfully refreshed from Google Patents.
US5875184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for transferring data packets
Assignee: Altvater Air Data Systems GmbH and Co KG
•
Filing: 1996-12-19
•
Granted: 1999-02-23
•
Expires: 2016-12-19
Abstract
Abstract A method for transferring data packets in a network of user stations is described, the data packets being transferred over a set of channels with the frequency-hopping method and the channels being in this context selected for data transfer in accordance with a frequency-hopping pattern in temporally successive time slots. Time slots in which a user station is authorized to transmit are assigned to it as needed.
Inventors
- 👤 Ulrich Altvater
- 👤 Stefan Bohmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:07
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/69; H04B1/713; H04B1/7143; H04L; H04L12/00; H04L12/64; H04L12/6418; H04L2012/6421; H04L2012/6429; H04L2012/6445; H04L2012/6456; H04L2012/6481
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
130 words
A method for transferring data packets in a network of user stations, the data packets being transferred over a set of channels with a frequency-hopping method and the channels being in this context selected for data transfer in accordance with a frequency-hopping pattern in temporally successive time slots, and there being assigned to a user station time slots in which it is authorized to transmit as needed, wherein in a first frequency-hopping pattern, data packets are transferred as needed, and in at least one second frequency-hopping pattern orthogonal to the first frequency-hopping pattern, data packets are transferred in a redefinable time grid, synchronously in the network, and wherein each user station has a transmission/reception section that is set alternatively on a channel from the first or the second frequency-hopping pattern.
Claim 2
Independent Claim
130 words
A method for transferring data packets in a network of user stations, the data packets being transferred over a set of channels with a frequency-hopping method and the channels being in this context selected for data transfer in accordance with a frequency-hopping pattern in temporally successive time slots, and there being assigned to a user station time slots in which it is authorized to transmit as needed, wherein in a first frequency-hopping pattern, data packets are transferred as needed, and in at least one second frequency-hopping pattern orthogonal to the first frequency-hopping pattern, data packets are transferred in a redefinable time grid, synchronously in the network, and wherein each user station has a transmission/reception section that is set alternatively on a channel from the first or the second frequency-hopping pattern.
Claim 3
Dependent Claim
53 words
The method of claim 1, wherein at least a first, fixed time grid of periodically arranged time slots is assigned to a user station for synchronous transfer of data packets, and at least some of the remaining time slots are allocated dynamically to the user stations as a function of their data volume.
Claim 4
Dependent Claim
87 words
The method of claim 1, wherein the set of channels lies in a frequency band that is used by primary users, such that before a potential data transfer, a particular channel selected by the network of user stations is checked to determine whether a primary user is occupying that channel at the time, and as a function of that check either a data packet is transferred over the selected channel, or the next channel in the particular frequency-hopping pattern is selected for checking and potential data transfer.
Claim 5
Dependent Claim
28 words
The method of claim 1, wherein the time slots of the first frequency-hopping pattern are dynamically allocated to the user stations as a function of their data volume.
Claim 6
Dependent Claim
49 words
The method of claim 1, wherein the network of user stations has a common system time, and processes both frequency-hopping patterns cyclically and simultaneously in such a way that in one specific time slot, one channel each from the first and second frequency-hopping patterns is available for data transfer.
Claim 7
Dependent Claim
22 words
The method of claim 1, wherein fixed, periodically arranged time slots are allocated to each user station in the second frequency-hopping pattern.
Claim 8
Dependent Claim
27 words
The method of claim 1, wherein a set of fixed, periodically arranged time slots in the second frequency-hopping pattern is allocated to a user station as needed.
Claim 9
Dependent Claim
52 words
The method of claim 1, wherein one user station is a central station that has two transmission/reception sections, of which, in a specific time slot, the one is set on the assigned channel of the first frequency-hopping pattern and the other is set on the assigned channel of the second frequency-hopping pattern.
Claim 10
Dependent Claim
30 words
The method of claim 1, wherein the user station follows the first frequency-hopping pattern, and switches over to the second frequency-hopping pattern only when it has its own transmission authorization.
Claim 11
Dependent Claim
26 words
The method of claim 9, wherein the user station switches over to the second frequency spectrum only if a synchronous data transfer for it is pending.
Claim 12
Dependent Claim
26 words
The method of claim 10, wherein the central station informs the user station of a synchronous data transfer over a channel from the first frequency-hopping pattern.
Claim 13
Dependent Claim
107 words
A central station for a network of user stations which transfers data packets, such that the data packets are transferred over a set of channels with a frequency hopping method and the channels are in that context selected for data transfer in accordance with a frequency-hopping pattern in temporal succession, the central station having a first transmission/reception section which processes a first frequency-hopping pattern in order to transfer data packets in load-dependent fashion to/from the user stations and a second transmission/reception section that processes, approximately simultaneously, a second frequency-hopping pattern, orthogonal to the first frequency-hopping pattern, in order to transfer data packets in a predefinable time grid.
Claim 14
Dependent Claim
107 words
A central station for a network of user stations which transfers data packets, such that the data packets are transferred over a set of channels with a frequency hopping method and the channels are in that context selected for data transfer in accordance with a frequency-hopping pattern in temporal succession, the central station having a first transmission/reception section which processes a first frequency-hopping pattern in order to transfer data packets in load-dependent fashion to/from the user stations and a second transmission/reception section that processes, approximately simultaneously, a second frequency-hopping pattern, orthogonal to the first frequency-hopping pattern, in order to transfer data packets in a predefinable time grid.
Claim 15
Dependent Claim
96 words
The central station of claim 12, which is equipped to transfer data packets over a set of channels which lies in a frequency band that is used by primary users, such that before a potential data transfer, a particular channel selected by the network of user stations is checked to determine whether a primary user is occupying that channel at the time, and as a function of that check either a data packet is transferred over the selected channel, or the next channel in the particular frequency-hopping pattern is selected for checking and potential data transfer.
Claim 16
Dependent Claim
126 words
A user station for a network of such user stations which transfers data packets, such that the data packets are transferred over a set of channels with a frequency-hopping method and the channels are in that context selected for data transfer in accordance with a frequency-hopping pattern in temporal succession, such that the user station is equipped to store a first frequency-hopping pattern and process it as specified by a central station, wherein the user station is equipped to store two frequency-hopping patterns and call them up selectively in order to transfer a data packet, data packets being transferred in load-dependent fashion in the first frequency-hopping pattern and data packets being transferred in a predefinable time grid in the second frequency-hopping pattern orthogonal to the first.
Claim 17
Dependent Claim
126 words
A user station for a network of such user stations which transfers data packets, such that the data packets are transferred over a set of channels with a frequency-hopping method and the channels are in that context selected for data transfer in accordance with a frequency-hopping pattern in temporal succession, such that the user station is equipped to store a first frequency-hopping pattern and process it as specified by a central station, wherein the user station is equipped to store two frequency-hopping patterns and call them up selectively in order to transfer a data packet, data packets being transferred in load-dependent fashion in the first frequency-hopping pattern and data packets being transferred in a predefinable time grid in the second frequency-hopping pattern orthogonal to the first.
Claim 18
Dependent Claim
96 words
The user station of claim 14, which is equipped to transfer data packets over a set of channels which lies in a frequency band that is used by primary users, such that before a potential data transfer, a particular channel selected by the network of user stations is checked to determine whether a primary user is occupying that channel at the time, and as a function of that check either a data packet is transferred over the selected channel, or the next channel in the particular frequency-hopping pattern is selected for checking and potential data transfer.
References Cited (Backward Citations)
US3700820A
Cited
US5311504A
Cited
US5260944A
Cited
US5142534A
Cited
EP0523362A2
Cited
US5349580A
Cited
US5386435A
Cited
US5521925A
Cited
US5425049A
Cited
DE4403483A1
Cited
DE4407544A1
Cited
DE4425973C1
Cited
DE4434041C1
Cited
DE19617301A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-02-22 | 2002-08-24 | 2003-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-02-22 | 2006-08-24 | 2007-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-02-22 | 2010-08-24 | 2011-02-23 | $7700.00 | Window Closed / Lapsed |