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Cooperative Multicast Based on Data Sharing in Integrated Cellular and Short-Range Networks

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2 Author(s)
Jung-Min Moon ; Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol. (KAIST), Daejeon, South Korea ; Dong-Ho Cho

An integrated cellular and short-range network, in which short-range communications among users are used as a mean of increasing the performance of a cellular system, is considered as a promising technology to support various multimedia services in an efficient manner. Especially for multicast service, this kind of network can provide a method to overcome a drawback of a conventional multicast, which is caused by applying a common data rate to multicast traffic. So, we study a cooperative multicast that utilizes the capability of the shortrange communications. In this case, the power consumption of a mobile device is unavoidable. Thus, we develop an optimization problem that finds the optimal data rates assigned to each user in a multicast group to minimize the power consumption of a mobile device. Simulation results show that the cooperative multicast based on the proposed rate control algorithm can reduce a large amount of transmit power of a base station while using a small amount of power of a mobile device.

Published in:

Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd

Date of Conference:

15-18 May 2011

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