US Patent No. 9,287,969

PROTECTION CHANNEL PROVISIONING METHOD AND NODE EQUIPMENT


Patent No. 9,287,969
Issue Date March 15, 2016
Title Protection Channel Provisioning Method And Node Equipment
Inventorship Masakazu Bamba, Kawasaki (JP)
Assignee FUJITSU LIMITED, Kawasaki (JP)

Claim of US Patent No. 9,287,969

1. A protection channel provisioning method used in a network system including a plurality of nodes, the method comprising:
reserving a first protection channel corresponding to a first work channel and a second protection channel corresponding to
a second work channel;

provisioning a shared protection channel by configuring a circuit of node equipment provided on a shared route on which the
first protection channel and the second protection channel are reserved so that a data signal of the first work channel or
a data signal of the second work channel is transmitted via the shared route; and

configuring a circuit of branch node equipment provided in a branch node at which the shared protection channel is guided
to a first node corresponding to the first protection channel and a second node corresponding to the second protection channel
so that the data signal transmitted via the shared protection channel is not guided to the first node and the second node,
wherein

when the data signal of the first work channel is transmitted on the first work channel without fail and the data signal of
the second work channel is transmitted on the second work channel without fail, the data signal of the first work channel
or the data signal of the second work channel is transmitted via the shared protection channel to the branch node, and the
branch node equipment provided in the branch node discards the data signal received via the shared protection channel.