Chen, Ying-Tsuen

Multimedia services over wireless networks are getting popular. With multicast
many mobile stations can join the same video multicast group and share the same radio
resource to increase frequency utilization efficiently. However users may locate at
different positions so as to suffer different path loss, interference and receive different
signal to interference and noise ratio (SINR). Users at the cell-edge receiving lower
SINR may degrade the multicast efficiency. In this thesis we propose four schemes
considering fractional frequency reuse (FFR) over relay networks to reuse frequency in
multi-cells. With fractional frequency reuse, users close to the base station (BS) have
more resources to improve the total frequency utilization. A resource allocation scheme
is also proposed to efficiently allocate wireless resources. Compared to the
conventional relay scheme, the proposed schemes can provide more than 10% video
layers for all users and give better video quality for users near BS

Layered Video Multicast Using Fractional Frequency Reuse over Wireless Relay Networks

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