Exact(8)
With high offered loads, it causes higher packet loss because of the queue full.
The throughput is affected by α only for high offered traffic loads.
This is more frequent in the high offered load scenarios, resulting in higher degree of QoS-differentiation in the QoS-Fi scheme.
Scenario 3: Evenly distributed traffic throughout the QoS types (ρ1:ρ2:ρ3:ρ4=1:1:1:1) and high offered load (λ = 0.5).
Scenario 4: Background traffic is twice as large as other types of traffic, (ρ1:ρ2:ρ3:ρ4=1:1:1:2) and high offered load (λ = 0.5).
By providing protection against congestion limited to the LTE network, at high offered load levels, LTE LC based ANS pushes too much traffic to be served by WLAN.
Moreover, the degree of QoS differentiaion can be flexibly further tuned by varying the parameter settings.By comparing the scenario of moderate offered load and the scenario of high offered load (i.e., Figure 8a,b versus Figure 8c,b), the degree of QoS-differentiation of QoS-Fi is larger in high offered load conditions.
Lower frequency of active set updates for higher α and for high offered traffic is due to lower probability of fulfilling condition (1) and higher requirements on the FAPs backbone capacity, respectively.
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