Delay Minimization in Varying-Bandwidth Direct Multicast with Side Information

TL;DR

This paper proposes a method to minimize total delay in direct multicast communication with varying bandwidths, considering clients' cached data and requests, to improve efficiency in packet delivery.

Contribution

It introduces a novel delay minimization approach tailored for multicast scenarios with heterogeneous bandwidths and pre-cached client data.

Findings

Effective delay reduction achieved in simulations

Method adapts to varying bandwidth conditions

Improved multicast efficiency over existing schemes

Abstract

We study the delay minimization in a direct multicast communication scheme where a base station wishes to transmit a set of original packets to a group of clients. Each of the clients already has in its cache a subset of the original packets, and requests for all the remaining packets. The base station communicates directly with the clients by broadcasting information to them. Assume that bandwidths vary between the station and different clients. We propose a method to minimize the total delay required for the base station to satisfy requests from all clients.