Enhanced Handoff Scheme for Downlink-Uplink Asymmetric Channels in Cellular Systems

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="241483.fig.005a" src="https://static.hindawi.com/articles/tswj/volume-2013/241483/figures/241483.fig.005a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>The downlink-uplink symmetric channel</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="241483.fig.005b" src="https://static.hindawi.com/articles/tswj/volume-2013/241483/figures/241483.fig.005b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>The downlink-uplink asymmetric channel case I: downlink-dominant channel</td></tr></table></td></tr><tr class="fig-image" id="c"><td><img alt="241483.fig.005c" src="https://static.hindawi.com/articles/tswj/volume-2013/241483/figures/241483.fig.005c.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(c) </b>The downlink-uplink asymmetric channel case II: uplink-dominant channel</td></tr></table></td></tr></table>

<table>Handoff according to the downlink and uplink channel variations.</table>

The Scientific World Journal

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Figure 5

Figure 5: Enhanced Handoff Scheme for Downlink-Uplink Asymmetric Channels in Cellular Systems 