Patent US7180852B1 successfully refreshed from Google Patents.
US7180852B1
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Method for selecting a restoration path in a mesh network
Assignee: AT&T Inc
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Filing: 2005-09-30
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Granted: 2007-02-20
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Expires: 2025-09-30
Abstract
Abstract A method of selecting a restoration path in a mesh telecommunication network is disclosed that advantageously is practical and flexible and may be pre-computed along with a service connection path during the setup of the connection. The information used to select the restoration path can be advantageously distributed among nodes in the network.
Inventors
- 👤 Robert Duncan Doverspike
- 👤 Charles Robert Kalmanek, Jr.
- 👤 Guangzhi Li
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:10
CPC Classifications
H; H04; H04J; H04J14/00; H04J14/02; H04J14/0278; H04J14/0284; H04J14/0227; H04J14/0241; H04Q; H04Q11/00; H04Q11/0001; H04Q11/0062; H04J14/0287; H04J14/0293; H04J14/0295; H04Q2011/0079; H04Q2011/0081; H04Q2011/0088
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
129 words
A mesh telecommunication network having a plurality of nodes comprising: a destination node; a source node configured to select a restoration path in said mesh telecommunication network by sending a first message along a service path to the destination node, receiving, in response to the first message, a second message from the destination node via a return path, the second message containing an array storing a restoration link capacity for each link in the return path not in the service path, wherein at least some of the nodes in the return path update the array upon receipt of the second message; selecting a restoration path through the network from the source node to the destination node using the array; and reserving resources for the restoration path in the network.
Claim 2
Dependent Claim
129 words
A mesh telecommunication network having a plurality of nodes comprising: a destination node; a source node configured to select a restoration path in said mesh telecommunication network by sending a first message along a service path to the destination node, receiving, in response to the first message, a second message from the destination node via a return path, the second message containing an array storing a restoration link capacity for each link in the return path not in the service path, wherein at least some of the nodes in the return path update the array upon receipt of the second message; selecting a restoration path through the network from the source node to the destination node using the array; and reserving resources for the restoration path in the network.
Claim 3
Dependent Claim
18 words
The mesh telecommunication network of claim 1 wherein the array comprises a matrix storing the restoration link capacity.
Claim 4
Dependent Claim
17 words
The mesh telecommunication network of claim 2 wherein the restoration link capacity on a link is shared.
Claim 5
Dependent Claim
17 words
The mesh telecommunication network of claim 1 wherein the plurality of nodes in the network are cross-connects.
Claim 6
Dependent Claim
18 words
The mesh telecommunication network of claim 4 wherein the plurality of nodes in the network are optical cross-connects.
Claim 7
Dependent Claim
114 words
A mesh telecommunication network comprising: means for sending a first message along a service path to a destination node; means for receiving, in response to the first message, a second message from the destination node via a return path, the second message containing an array storing a restoration link capacity for each link in the return path not in the service path, wherein at least some of the nodes in the return path update the array upon receipt of the second message; means for selecting a restoration path through the network from the source node to the destination node using the array; and means for reserving resources for the restoration path in the network.
Claim 8
Dependent Claim
114 words
A mesh telecommunication network comprising: means for sending a first message along a service path to a destination node; means for receiving, in response to the first message, a second message from the destination node via a return path, the second message containing an array storing a restoration link capacity for each link in the return path not in the service path, wherein at least some of the nodes in the return path update the array upon receipt of the second message; means for selecting a restoration path through the network from the source node to the destination node using the array; and means for reserving resources for the restoration path in the network.
Claim 9
Dependent Claim
22 words
The network of claim 6 further comprising means for storing said restoration link capacity in a matrix when a possible failure occurs.
Claim 10
Dependent Claim
14 words
The network of claim 7 further comprising means for sharing said restoration link capacity.
Claim 11
Dependent Claim
17 words
The network of claim 8 further comprising means for sending a third message to update the array.
Claim 12
Dependent Claim
34 words
The network of claim 9 wherein the means for reserving resources for the restoration path further comprise means for sending a fourth message along the restoration path to the destination node in the network.
Claim 13
Dependent Claim
26 words
The network of claim 10 further comprising means for storing restoration link capacity in rows of the matrix in master nodes of shared risk link groups.
Claim 14
Dependent Claim
23 words
The network of claim 11 further comprising means for storing restoration link capacity in columns of the matrix in master nodes of links.
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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) | 2010-02-19 | 2010-08-21 | 2011-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2014-02-19 | 2014-08-21 | 2015-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2018-02-19 | 2018-08-21 | 2019-02-20 | $7700.00 | Window Closed / Lapsed |