US6674755B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and system for protection switching in a telecommunications network
Assignee: Cisco Technology Inc
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Filing: 2000-06-30
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Granted: 2004-01-06
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Expires: 2020-06-30
Abstract
Abstract A method for protection switching in a telecommunications network is provided that includes receiving a plurality of primary and secondary sub-streams. Each primary sub-stream corresponds to a redundant secondary sub-stream. Each sub-stream has an associated priority level. Protection switching is provided for the sub-streams based on the priority levels.
Inventors
- 👤 Thomas A. Potter
- 👤 R. Douglas Howson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:21
CPC Classifications
H; H04; H04L; H04L45/00; H04L45/22; H04L45/02; H04L45/10
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
46 words
A method for protection switching in a telecommunications network, comprising: receiving a plurality of primary and secondary sub-streams, each primary sub-stream corresponding to a redundant secondary sub-stream, each sub-stream having an associated priority level; and providing protection switching for the substreams based on the priority levels.
Claim 2
Independent Claim
46 words
A method for protection switching in a telecommunications network, comprising: receiving a plurality of primary and secondary sub-streams, each primary sub-stream corresponding to a redundant secondary sub-stream, each sub-stream having an associated priority level; and providing protection switching for the substreams based on the priority levels.
Claim 3
Dependent Claim
29 words
The method of claim 1 , providing protection switching comprising segmenting at least a portion of the primary sub-streams into a plurality of segments based on the priority levels.
Claim 4
Dependent Claim
69 words
The method of claim 2 , providing protection switching further comprising processing a high priority segment prior to processing a low priority segment, processing a segment comprising: comparing the (status indicator) for each primary sub-stream in the segment to the status indicator for the corresponding secondary sub-stream; and dropping from the segment each primary sub-stream having a status indicator greater than the status indicator for the corresponding secondary sub-stream.
Claim 5
Dependent Claim
35 words
The method of claim 3 , processing a segment further comprising dropping each secondary sub-stream having a status indicator greater than or equal to the status indicator for the corresponding primary sub-stream in the segment.
Claim 6
Dependent Claim
40 words
The method of claim 1 , providing protection switching further comprising: storing the priority level for each of the primary sub-streams in a primary database; and storing the priority level for each of the secondary sub-streams in a secondary database.
Claim 7
Dependent Claim
15 words
The method of claim 1 , the telecommunications network comprising an Asynchronous Transfer Mode network.
Claim 8
Dependent Claim
20 words
The method of claim 1 , the sub-streams comprising at least one of voice traffic, video traffic and data traffic.
Claim 9
Dependent Claim
27 words
The method of claim 1 , the priority levels comprising at least one of constant bit rate, variable bit rate, available bit rate and unspecified bit rate.
Claim 10
Independent Claim
61 words
A system for protection switching in a telecommunications network, comprising: a computer-readable medium; and logic stored on the computer-readable medium, the logic operable to receive a plurality of primary and secondary sub-streams, each primary sub-stream corresponding to a redundant secondary sub-stream, each sub-stream having an associated priority level, and to provide protection switching for the sub-streams based on the priority levels.
Claim 11
Independent Claim
61 words
A system for protection switching in a telecommunications network, comprising: a computer-readable medium; and logic stored on the computer-readable medium, the logic operable to receive a plurality of primary and secondary sub-streams, each primary sub-stream corresponding to a redundant secondary sub-stream, each sub-stream having an associated priority level, and to provide protection switching for the sub-streams based on the priority levels.
Claim 12
Dependent Claim
30 words
The system of claim 9 , the logic further operable to segment at least a portion of the primary sub-streams into a plurality of segments based on the priority levels.
Claim 13
Dependent Claim
81 words
The system of claim 10 , the logic further operable to process a segment by comparing the status indicator for each primary sub-stream in the segment to the status indicator for the corresponding secondary substream, dropping from the segment each primary sub-stream having a status indicator greater than the status indicator for the corresponding secondary sub-stream, and dropping each secondary sub-stream having a status indicator greater than or equal to the status indicator for the corresponding primary sub-stream in the segment.
Claim 14
Dependent Claim
23 words
The system of claim 11 , the logic further operable to process a high priority segment prior to processing a low priority segment.
Claim 15
Dependent Claim
41 words
The system of claim 9 , the logic further operable to store the priority level for each of the primary substreams in a primary database and to store the priority level for each of the secondary sub-streams in a secondary database.
Claim 16
Dependent Claim
15 words
The system of claim 9 , the telecommunications network comprising an Asynchronous Transfer Mode network.
Claim 17
Dependent Claim
20 words
The system of claim 9 , the sub-streams comprising at least one of voice traffic, video traffic and data traffic.
Claim 18
Dependent Claim
27 words
The system of claim 9 , the priority levels comprising at least one of constant bit rate, variable bit rate, available bit rate and unspecified bit rate.
Claim 19
Independent Claim
181 words
A system for protection switching in a telecommunications network, comprising: a routing terminal comprising an east circuit pack and a west circuit pack; a primary line operable to deliver a primary traffic stream to the east circuit pack, the primary traffic stream comprising a plurality of primary sub-streams each having an associated priority level and an associated status indicator; a secondary line operable to deliver a secondary traffic stream to the west circuit pack, the secondary traffic stream comprising a plurality of secondary sub-streams each having an associated priority level and an associated status indicator, each primary sub-stream corresponding to a redundant secondary sub-stream; and the routing terminal further comprising: a sub-stream segmenter operable to segment the sub-streams into a plurality of segments based on the priority levels for the sub-streams, each segment comprising sub-streams having a same priority level, and a traffic selector operable to compare, for each segment, the status indicator for each primary sub-stream in the segment to the status indicator for the corresponding secondary sub-stream in accordance with the priority level for the sub-streams of the segment.
Claim 20
Independent Claim
181 words
A system for protection switching in a telecommunications network, comprising: a routing terminal comprising an east circuit pack and a west circuit pack; a primary line operable to deliver a primary traffic stream to the east circuit pack, the primary traffic stream comprising a plurality of primary sub-streams each having an associated priority level and an associated status indicator; a secondary line operable to deliver a secondary traffic stream to the west circuit pack, the secondary traffic stream comprising a plurality of secondary sub-streams each having an associated priority level and an associated status indicator, each primary sub-stream corresponding to a redundant secondary sub-stream; and the routing terminal further comprising: a sub-stream segmenter operable to segment the sub-streams into a plurality of segments based on the priority levels for the sub-streams, each segment comprising sub-streams having a same priority level, and a traffic selector operable to compare, for each segment, the status indicator for each primary sub-stream in the segment to the status indicator for the corresponding secondary sub-stream in accordance with the priority level for the sub-streams of the segment.
Claim 21
Dependent Claim
36 words
The system of claim 17 , the traffic selector further operable to notify the east circuit pack to drop each primary sub-stream having a status indicator greater than the status indicator for the corresponding secondary sub-stream.
Claim 22
Dependent Claim
39 words
The system of claim 17 , the traffic selector further operable to allow the west circuit pack to drop each secondary sub-stream having a status indicator greater than or equal to the status indicator for the corresponding primary sub-stream.
Claim 23
Dependent Claim
53 words
The system of claim 17 , further comprising: a primary database coupled to the east circuit pack and operable to store the priority level for each of the primary sub-streams; and a secondary database coupled to the west circuit pack and operable to store the priority level for each of the secondary sub-streams.
Claim 24
Dependent Claim
183 words
A routing terminal operable to provide protection switching in a telecommunications network, comprising: an east circuit pack operable to receive a primary traffic stream, the primary traffic stream comprising a plurality of primary sub-streams each having an associated priority level and an associated status indicator; a west circuit pack operable to receive a secondary traffic stream, the secondary traffic stream comprising a plurality of secondary sub-streams each having an associated priority level and an associated status indicator; a sub-stream segmenter operable to segment the sub-streams into a plurality of segments based on the priority levels for the sub-streams; each segment comprising sub-streams having a same priority level, the priority level for the sub-streams of the first segment comprising the highest priority level; and a traffic selector operable to compare the status indicators for the primary sub-streams to the status indicators for the corresponding secondary sub-streams and operable to compare, for each segment, the status indicator for each primary sub-stream in the segment to the status indicator for the corresponding secondary sub-stream in accordance with the priority level for the sub-streams of the segment.
Claim 25
Dependent Claim
183 words
A routing terminal operable to provide protection switching in a telecommunications network, comprising: an east circuit pack operable to receive a primary traffic stream, the primary traffic stream comprising a plurality of primary sub-streams each having an associated priority level and an associated status indicator; a west circuit pack operable to receive a secondary traffic stream, the secondary traffic stream comprising a plurality of secondary sub-streams each having an associated priority level and an associated status indicator; a sub-stream segmenter operable to segment the sub-streams into a plurality of segments based on the priority levels for the sub-streams; each segment comprising sub-streams having a same priority level, the priority level for the sub-streams of the first segment comprising the highest priority level; and a traffic selector operable to compare the status indicators for the primary sub-streams to the status indicators for the corresponding secondary sub-streams and operable to compare, for each segment, the status indicator for each primary sub-stream in the segment to the status indicator for the corresponding secondary sub-stream in accordance with the priority level for the sub-streams of the segment.
Claim 26
Dependent Claim
37 words
The routing terminal of claim 21 , the traffic selector further operable to notify the east circuit pack to drop each primary sub-stream having a status indicator greater than the status indicator for the corresponding secondary sub-stream.
Claim 27
Dependent Claim
40 words
The routing terminal of claim 22 , the traffic selector further operable to allow the west circuit pack to drop each secondary sub-stream having a status indicator greater than or equal to the status indicator for the corresponding primary sub-stream.
Claim 28
Dependent Claim
54 words
The routing terminal of claim 21 , further comprising: a primary database coupled to the east circuit pack and operable to store the priority level for each of the primary sub-streams; and a secondary database coupled to the west circuit pack and operable to store the priority level for each of the secondary sub-streams.
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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) | 2007-01-05 | 2007-07-07 | 2008-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-01-05 | 2011-07-07 | 2012-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-01-05 | 2015-07-07 | 2016-01-06 | $7700.00 | Window Closed / Lapsed |