Patent ID: 8391154

Claim:
A method comprising: (1) at moment t 1 , directing a stream of packets from a source node to a destination node on a first path; (2) at moment t 2 , determining that a quality-of-service score R(t) for the stream of packets is below a non-constant quality-of-service threshold T(t), wherein the non-constant quality-of-service threshold T(t) is a function of a length of a time period between the moment t 1 and the moment t 2 , and wherein the non-constant quality-of-service threshold T(t) varies and is greater at the moment t 2 than at a moment t 2 +Δ, Δ being a positive real number greater than zero; and (3) at moment t 3 , based on the quality-of-service score R(t) for the stream of packets on the first path being below the non-constant quality-of-service threshold T(t), re-directing the stream of packets from the source node to the destination node on a second path, wherein the stream of packets is transmitted along the first path during an interval between the moment t 2 and the moment t 3 , the moment t 1 being before the moment t 2 and the moment t 2 being before the moment t 3 .