ADMISSION CONTROL IN A SELF AWARE NETWORK

摘要

A method of admission control in a Self Aware Network carrying at least one existing user (z) specifying at least one Quality of Service metric (qw). The method includes receiving (202) a user request for admission of a connection from a source node to a destination node in the network specifying at least one Quality of Service metric (qv). The source node then finds (203) paths (P(s,d)); creates (206) link Quality of Service matrices (Qw(i,j)); sends (208) probe traffic over the network; and uses the traffic to obtain (210) a Quality of Service matrix (q̂′w(i,j)). The source node computes (212) estimated link Quality of Service matrices (Q̂w(i,j)) and computes (214) path Quality of Service matrices (K̂w) for the Quality of Service metrics, based on the estimated link Quality of Service matrices (Q̂w(i,j)). The user request is rejected or accepted (216, 218, 220) based on the path Quality of Service matrix.

主权项

1. A method of decentralized admission control in a Self Aware Network, the network carrying at least one existing user, each said existing user specifying at least one Quality of Service metric expressed as a Quality of Service constraint, the method comprising:
receiving a user request for admission of a connection from a source node to a destination node in the network carrying a traffic rate, the request specifying at least one Quality of Service metric expressed as a Quality of Service constraint; the source node then performing, in a decentralized fashion so as to be independent of other nodes in the network thereby avoiding centralised admission control, the following: finding a set of paths between the source node and the destination node; creating link Quality of Service matrices for all links in the set of paths and Quality of Service metrics of the at least one existing user and the user making the request; sending probe traffic over the network; using the probe traffic to obtain a Quality of Service matrix for the links and for the Quality of Service metrics of the at least one existing user and the Quality of Service metric of the user making the request; computing estimated link Quality of Service matrices for the links and for the Quality of Service metrics of the at least one existing user; computing path Quality of Service matrices for the Quality of Service metrics of the at least one existing user and the Quality of Service metric of the user making the request, based on the estimated link Quality of Service matrices, and rejecting or accepting the user request based on a computed path Quality of Service matrices.