Balanced networks
AssigneeNortel Networks Limited
InventorKaren E. Hermann
Life of this patent
Estimating the term…
Abstract
A network architecture is provided for increasing the working/protection bandwidth ratio (W/PBR) in the transport networks. The balanced network provides for a plurality of arm networks between two nodes of interest, the arms having identical bandwidth allocation for the add/drop, passthrough and protection traffic. In the case of a failure on an arm, the affected traffic is equally distributed in the protection bandwidth of the unaffected arms. The add/drop and passthrough traffic of the unaffected arms is also re-balanced between the unaffected arms.
Claims13
A balanced network for transporting a traffic signal with a working-to-protection bandwidth ratio higher than 0.5, comprising:
- a ring network for connecting a first node and a second node, said nodes defining a first and a second ring arm;
- one or more mesh arms connecting said first node and said second node;
- wherein each arm includes one or more Add/Drop Multiplexer (ADM) nodes, and each arm has a protection bandwidth of 1/N×BW and a working bandwidth of (N−1)/N×BW, where BW is the capacity available on any line of said network, and N is the number of arms connecting said first and second nodes.
A balanced network for transporting a traffic signal with a working-to-protection bandwidth ratio higher than 0.5, comprising:
- a ring network for connecting a first node and a second node, said nodes defining a first and a second ring arm:
- one or more mesh arms connecting said first node and said second node;
- wherein each arm includes one or more Add/Drop Multiplexer (ADM) nodes, and each arm has a working bandwidth of (N−M)/N×BW, where BW is the capacity available on any line of said network, N is the number of arms connecting said first and second nodes, and M is the number of full line faults in said network.
A method for creating a balanced transport network with a working/protection bandwidth ratio higher than 0.5, comprising:
- providing N mesh arms between a first and a second node of balanced network, each arm comprising one or more Add Drop Multiplexer (ADM) nodes;
- allocating to each said arm a working bandwidth of (N−1)N×BW and a protection bandwidth of 1/N×BW, where BW is the capacity available on any line or said network.
Dependencies are inferred from the claim text.