Methods and Systems for Traffic Engineering with Redundancy

摘要

It is possible to improve backhaul resource utilization efficiency during dynamic point selection (DPS) transmissions by unicasting different portions of a traffic flow to different access points participating in the DPS transmission. Specifically, a traffic flow may be encoded to obtain forward error correction (FEC) packets, and different subsets of the FEC packets may be unicast to different access points participating in the DPS transmission. The subsets of FEC packets may have partial (or no) redundancy such that the amount of duplicative data communicated over the backhaul network is reduced when compared to multicasting the entire traffic flow to each access point participating in the DPS transmission. There may be different degrees of redundancy between subsets of FEC packets to achieve different traffic engineering (TE) objectives.

主权项

1. A method for dynamic point selection (DPS), the method comprising:
assigning, by a traffic engineering (TE) controller, portions of a traffic flow to be communicated over different unicast backhaul links to access points participating in DPS transmission; and instructing a network node to forward a first set of forward error correction (FEC) packets corresponding to the traffic flow over a first unicast path to a first access point, and to forward a second set of FEC packets corresponding to the traffic flow over a second unicast path to a second access point, wherein the first set of FEC packets includes at least one FEC packet that is excluded from the second set of FEC packets.