We also consider the impact of network topology which is characterized by the maximal node degree d on the network throughput gain in Fig. 5.
Given r, the network throughput decreases with the increase of d. This is because the interference in the wireless subnetwork is larger when d is larger.
Given d,อwith the increase of r, the total traffic demand in the networkอincreases and meanwhile the network throughput in both FiWi network and the traditional WMN are improved.
However, the traffic delivery ratio which is defined as the ratio of network throughput over total traffic demand falls with increased r due to increased interferences in the wireless network. This is well illustrated by Fig. 6 which is derived from Fig. 5.