Figure 4
From: Optimal Channel Width Adaptation, Logical Topology Design, and Routing in Wireless Mesh Networks
MILP-1 may produce suboptimal solution. We still assume that the total available spectrum is 60 MHz wide and each 1 MHz spectrum can deliver 1 Mbps data rate. Under perfect time scheduler, both schemes in Figures 4(b) and 4(c) can obtain the same throughput U of 6 Mbps for every flow. But in the scheme of Figure 4(c), link (1, 2) interferes with link (4, 5). When the contention-based MAC technology is used, it may cause unnecessary contention and collision.5-node chain topology.An optimal solution.A suboptimal solution which may be produced by MILP-1.