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US6134238A
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Layered bandwidth management in ATM/SDH (SONET) networks
Assignee: Nokia of America Corp
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Filing: 1997-07-14
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Granted: 2000-10-17
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Expires: 2017-07-14
Abstract
Abstract A layered bandwidth management system for transporting both STM and ATM traffic from customer circuit elements over a synchronous digital hierarchical (SDH (SONET)) transport network comprises a hybrid transport device for separately transporting STM and ATM traffic over separate first physical channels, the physical channels having fixed bandwidth allocations; a first bandwidth control device responsive to STM traffic contained in the first physical channel for directing STM traffic in fixed bandwidth allocations to a further destination; and, a second bandwidth control device responsive to ATM traffic contained in a separate first physical channel for switching the ATM traffic to a further destination, the second bandwidth control device capable of directing ATM traffic to the first physical channels for more efficient physical channel bandwidth utilization.
Inventors
- 👤 Tai Noh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:27
CPC Classifications
H; H04; H04L; H04L49/00; H04L49/60; H04L49/606; H04J; H04J3/00; H04J3/16; H04J3/1605; H04J3/1611; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L12/64; H04L12/6418; H04L41/00; H04L41/04; H04L41/052; H04L41/08; H04L41/0896; H04L41/32; H04L47/00; H04L47/10; H04L47/24; H04L47/2408; H04J2203/00; H04J2203/0001; H04J2203/0051; H04J2203/0055; H04J2203/0064; H04J2203/0067; H04J2203/0071; H04J2203/0073; H04J2203/0089; H04J2203/0096; H04L2012/5638; H04L2012/564; H04L2012/6445; H04L2012/6456
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
115 words
A layered bandwidth management system for transporting both STM and ATM traffic from customer circuit elements over a synchronous digital hierarchical SDH (SONET) transport network comprising: hybrid transport means for separately transporting STM and ATM traffic over separate first physical channels, said physical channels having a fixed bandwidth allocation; first bandwidth control means responsive to said STM traffic contained in said first physical channels for directing STM traffic in fixed bandwidth allocations; and, second bandwidth control means responsive to ATM traffic contained in said separate first physical channels for switching said ATM traffic, said second bandwidth control means capable of directing ATM traffic to said first physical channels for more efficient physical channel bandwidth utilization.
Claim 2
Dependent Claim
115 words
A layered bandwidth management system for transporting both STM and ATM traffic from customer circuit elements over a synchronous digital hierarchical SDH (SONET) transport network comprising: hybrid transport means for separately transporting STM and ATM traffic over separate first physical channels, said physical channels having a fixed bandwidth allocation; first bandwidth control means responsive to said STM traffic contained in said first physical channels for directing STM traffic in fixed bandwidth allocations; and, second bandwidth control means responsive to ATM traffic contained in said separate first physical channels for switching said ATM traffic, said second bandwidth control means capable of directing ATM traffic to said first physical channels for more efficient physical channel bandwidth utilization.
Claim 3
Dependent Claim
34 words
A layered bandwidth management system as claimed in claim 1, further comprising first ATM transport means for transporting STM traffic having embedded ATM cells mapped to STM traffic payloads over said first physical channels.
Claim 4
Dependent Claim
34 words
A layered bandwidth management system as claimed in claim 2, wherein said first physical channels includes a VC3 synchronous digital hierarchy tributary, said VC3 capable of transporting an aggregate capacity of ATM virtual paths.
Claim 5
Dependent Claim
24 words
A layered bandwidth management system as claimed in claim 1, further comprising second ATM transport means for transporting ATM cells over second physical channels.
Claim 6
Dependent Claim
28 words
A layered bandwidth management system as claimed in claim 4, further comprising means for converting STM traffic to ATM cells for transport over said second ATM transport means.
Claim 7
Dependent Claim
22 words
A layered bandwidth management system as claimed in claim 4, wherein said second ATM transport means includes VC4 synchronous digital hierarchy tributary.
Claim 8
Dependent Claim
34 words
A layered bandwidth management system as claimed in claim 1, further including means for collecting said STM and ATM traffic from said customer circuit elements and multiplexing said traffic to a transport access network.
Claim 9
Dependent Claim
27 words
A layered bandwidth management system as claimed in claim 7, wherein said collecting means includes ATM service multiplexer for multiplexing ATM traffic to said transport access network.
Claim 10
Dependent Claim
30 words
A layered bandwidth management system as claimed in claim 4, wherein said second first bandwidth control means is responsive to said ATM traffic contained in said second ATM transport means.
Claim 11
Dependent Claim
28 words
A layered bandwidth management system as claimed in claim 1, wherein said second bandwidth control means includes an ATM virtual path cross-connect system located in a central office.
Claim 12
Dependent Claim
25 words
A layered bandwidth management system as claimed in claim 1, wherein said first bandwidth control means includes wideband cross-connect system located in a central office.
Claim 13
Dependent Claim
156 words
A layered bandwidth management system for transporting both STM and ATM traffic from customer circuit elements over a transport network, and for accommodating increasing ATM traffic demand over time, said bandwidth management system comprising: first ATM transport means for transporting STM traffic having embedded ATM cells mapped to STM traffic payloads over first physical channels, said physical channels having a fixed bandwidth allocation; hybrid transport means for separately transporting STM and ATM traffic over separate first physical channels; second ATM transport means for transporting ATM cells over second physical channels; first bandwidth control means responsive to said STM traffic contained in said first physical channels for directing STM traffic in fixed bandwidth allocations; and, second bandwidth control means responsive to ATM traffic contained in said separate first physical channels for switching said ATM traffic, said second bandwidth control means capable of directing ATM traffic to said first physical channels for more efficient physical channel bandwidth utilization.
Claim 14
Dependent Claim
156 words
A layered bandwidth management system for transporting both STM and ATM traffic from customer circuit elements over a transport network, and for accommodating increasing ATM traffic demand over time, said bandwidth management system comprising: first ATM transport means for transporting STM traffic having embedded ATM cells mapped to STM traffic payloads over first physical channels, said physical channels having a fixed bandwidth allocation; hybrid transport means for separately transporting STM and ATM traffic over separate first physical channels; second ATM transport means for transporting ATM cells over second physical channels; first bandwidth control means responsive to said STM traffic contained in said first physical channels for directing STM traffic in fixed bandwidth allocations; and, second bandwidth control means responsive to ATM traffic contained in said separate first physical channels for switching said ATM traffic, said second bandwidth control means capable of directing ATM traffic to said first physical channels for more efficient physical channel bandwidth utilization.
Claim 15
Dependent Claim
45 words
A layered bandwidth management system for transporting both STM and ATM traffic as claimed in claim 12 wherein short term ATM traffic variations are accommodated by said second bandwidth control means and long term STM traffic variations are accommodated by said first bandwidth control means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-10-17 | 2004-04-17 | 2004-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-10-17 | 2008-04-17 | 2008-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-10-17 | 2012-04-17 | 2012-10-17 | $7700.00 | Window Closed / Lapsed |