System for an optical domain
First Claim
1. An optical domain restoration system for restoring communication over a first domain, the system comprising:
- a first optical pipe ring within the first domain for carrying optical communication signals in first and second opposing directions around said first optical pipe ring;
a second optical pipe ring within the first domain for carrying optical communication signals in first and second opposing directions around said second optical pipe ring, the first direction around said second optical pipe ring being in a substantially same direction as the first direction around said first optical pipe ring; and
a first plurality of optical switch platforms including adjacent first and second optical switch platforms, each optical switch platform being connected to said first and second optical pipe rings for switching optical communication signals between said first and second optical pipe rings, and each optical switch platform switching said optical communication signals without converting said optical communication signals from optical to electrical;
wherein, when a communication failure occurs between said first optical switch platform and said second optical switch platform,said first optical switch platform switches optical communication signals carried in the first direction in said first optical pipe ring between said first optical switch platform and said second optical switch platform to be carried in the second direction in said second optical pipe ring between said first optical switch platform and said second optical switch platform, andsaid second optical switch platform switches optical communication signals carried in the second direction in said first optical pipe ring between said second optical switch platform and said first optical switch platform to be carried in the first direction in said second optical pipe ring between said second optical switch platform and said first optical switch platform.
3 Assignments
0 Petitions
Accused Products
Abstract
A transmission-based restoration system and method restores a failure of an optical pipe within an optical domain. Restoration occurs in the same domain in which the failed optical pipe is located. First and second optical pipe rings and a first plurality of optical switch platforms are deployed within a domain. The first optical pipe ring carries optical communication signals in first and second opposing directions around the first optical pipe ring. The second optical pipe ring carries optical communication signals in first and second opposing directions around the second optical pipe ring. Each optical switch platform is connected to the first optical pipe ring and the second optical pipe ring for switching the optical communication signals between the first and second optical pipe rings. When the first and second optical pipe rings both fail between adjacent first and second optical switch platforms, the first optical switch platform switches the optical communication signals carried in the first direction in the optical pipe ring to be carried in the second direction in the second optical pipe ring. The second optical switch platform switches the optical communication signals carried in the second direction in the first optical pipe ring to be carried in the first direction in the second optical pipe ring. Preemptive traffic, multiple domain switches, and redundant configurations are used.
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Citations
15 Claims
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1. An optical domain restoration system for restoring communication over a first domain, the system comprising:
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a first optical pipe ring within the first domain for carrying optical communication signals in first and second opposing directions around said first optical pipe ring; a second optical pipe ring within the first domain for carrying optical communication signals in first and second opposing directions around said second optical pipe ring, the first direction around said second optical pipe ring being in a substantially same direction as the first direction around said first optical pipe ring; and a first plurality of optical switch platforms including adjacent first and second optical switch platforms, each optical switch platform being connected to said first and second optical pipe rings for switching optical communication signals between said first and second optical pipe rings, and each optical switch platform switching said optical communication signals without converting said optical communication signals from optical to electrical; wherein, when a communication failure occurs between said first optical switch platform and said second optical switch platform, said first optical switch platform switches optical communication signals carried in the first direction in said first optical pipe ring between said first optical switch platform and said second optical switch platform to be carried in the second direction in said second optical pipe ring between said first optical switch platform and said second optical switch platform, and said second optical switch platform switches optical communication signals carried in the second direction in said first optical pipe ring between said second optical switch platform and said first optical switch platform to be carried in the first direction in said second optical pipe ring between said second optical switch platform and said first optical switch platform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An optical domain restoration method for restoring communication over a first domain, the method comprising the steps of:
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carrying optical communication signals in first and second opposing directions around a first optical pipe ring; carrying optical communication signals in first and second opposing directions around a second optical pipe ring, the first direction around said second optical pipe ring being in a substantially same direction as the first direction around said first optical pipe ring; and switching optical communication signals between said first and second optical pipe rings through a plurality of optical switch platforms wherein said switching occurs without converting said optical communication signals from optical to electrical; during restoration, controlling said first optical switch platform to switch optical communication signals carried in the first direction in said first optical pipe ring between said first optical switch platform and said second optical switch platform to be carried in the second direction in said second optical pipe ring between said first optical switch platform and said second optical switch platform; and during restoration, controlling said second optical switch platform to switch optical communication signals carried in the second direction in said first optical pipe ring between said second optical switch platform and said first optical switch platform to be carried in the first direction in said second optical pipe ring between said second optical switch platform and said first optical switch platform. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification