Optimizing such metric may lead to starvation of some flows which originate far from gateways.
This comes from the fact that when the users are far away from gateways, the number of hops increases.
It can be seen that using SAFARI in Figure 7, some routers are used rarely, especially the ones far away from gateways.
But it is still far from the "halal gateway" once grandly proclaimed.Ventures like El-Asira also highlight the elastic nature (and lucrative potential) of the traditional boundaries between what Islam allows (halal) and prohibits (haram).
The flows which are not accepted are sent by nodes situated far away from the gateway and which are the last to be sent in the network (i.e., flows 10, 12, 13, 14, and 15).
In IEEE 802.11, we can observe that the more the source of flow is situated far away from the gateway, the more the flow has a high packet loss ratio.
We can observe that in the DCF IEEE 802.11 model, the more a flow is sent by a node situated far away from the gateway, the more its throughput is low; this phenomenon of starvation is well known and has already been analyzed in many papers (e.g., [32, 33]).
So far, most work on gateways focuses on studying simple cases where gateways have only two interfaces towards the outside.
Users are positioned so that it can be exploited, for example, near gateways or far away from each other, thus using SAFARI leads to high throughput.
(1) Users are positioned so that it can be exploited, for example, near gateways or far away from each other, thus using SAFARI leads to high throughput.
