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Paper details
Number 1 - March 2019
Volume 29 - 2019
Utility optimization-based bandwidth allocation for elastic and inelastic services in peer-to-peer networks
Shiyong Li, Yue Zhang, Yan Wang, Wei Sun
Abstract
This paper considers reasonable bandwidth allocation for multiclass services in peer-to-peer (P2P) networks, measures the
satisfaction of each peer as a customer by a utility function when acquiring one service, and develops an optimization
model for bandwidth allocation with the objective of utility maximization. Elastic services with concave utilities are first
considered and the exact expression of optimal bandwidth allocation for each peer is deduced. In order to obtain an optimum
in distributed P2P networks, we develop a gradient-based bandwidth allocation scheme and illustrate the performance with
numerical examples. Then we investigate bandwidth allocation for inelastic services with sigmoidal utilities, which is a
nonconvex optimization problem. In order to solve it, we analyze provider capacity provisioning for bandwidth allocation
of inelastic services and modify the update rule for prices that service customers should pay. Numerical examples are finally
given to illustrate that the improved scheme can also efficiently converge to the global optimum.
Keywords
P2P networks, bandwidth allocation, elastic and inelastic services, utility function