Title

Cloud-Based Multicasting with Feedback in Mobile Social Networks

Document Type

Article

Publication Date

11-7-2013

Publication Title

IEEE Transactions on Wireless Communications

Abstract

With the rapid growth of smartphone usage, mobile social networks (MSNs) are becoming increasingly popular. MSN can be considered as a type of delay tolerant network (DTN) which lacks continuous end-to-end connections between nodes, due to the node mobility and limited transmission range. Inspired by the homophily of social networks that friends are usually similar in characteristics, we present a novel concept - cloud, where the nodes in frequent contact with the destinations will form destination clouds. Neighbors in the destination cloud have a special status that can forward the message to the destination directly. We propose a cloud-based multicast scheme with feedback in MSNs with two phases: pre-cloud and inside-cloud. In the pre-cloud process, the message holder will forward the copy of the multicast message to the encountered node, based on a given forwarding metric. The forwarding metric can be iteratively refined from a feedback control mechanism. In the inside-cloud process, the message holder will wait until it meets with the destinations. We analytically formulate the multicast problem into a continuous Markov chain problem, and formally analyze the latency in this model. Extensive trace-driven simulations show that our scheme significantly improves the performance compared to existing schemes.

Volume

12

Issue

12

First Page

6043

Last Page

6053

DOI

https://doi.org/10.1109/TWC.2013.102313.121508

ISSN

1536-1276, ESSN: 1558-2248

Rights

This is a RoMEO green publisher - Must link to publisher version with DOI

© Copyright 2013 IEEE

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