Figure 2 Throughput guarantee violation probability for 10 users in a HSDPA network with identical throughput guarantees.
Figure 3 Throughput guarantee violation probability for 10 users in an LTE network with identical throughput guarantees.
Figure 1 Throughput guarantee violation probability for 10 users in a Mobile WiMAX network with identical throughput guarantees.
Figure 4 Throughput guarantee violation probability for 10 users in a WINNER I network with identical throughput guarantees.
The performance of the adaptive algorithms is better than the previous case because four users require a throughput guarantee that is less than Bopt/WT W = 0.5675 bits/s/Hz of the identical throughput guarantees case.
The performance of the non-adaptive scheme is worse as compared to the scenario with identical throughput guarantees.
In this section, we observe (Figure 9) the effect of users' speed on the TGVP performance of different algorithms by considering a Mobile WiMAX network with identical throughput guarantees of B/ WT W ) = 0.2 bits/s/Hz.
Figures 10 and 11 give comparisons of the approximate TGVP expression for the optimal algorithm with the corresponding Monte Carlo-simulated TGVPs for Mobile WiMAX- and LTE-based networks, respectively, for identical throughput guarantees.
We again use Jakes' correlation model with f c = 1 GHz. Figure 9 TGVP versus Speed for 10 users in a Mobile WiMAX network with identical throughput guarantees of B/ ( WT W ) = 0.2 bits/s/Hz, where T W = 80 ms corresponding to 16 time-slots.
In this section, we consider the case where all the users are promised identical throughput guarantees B = T W, where T W = 80 ms. Figures 1, 2, 3, 4 show the TGVP performance in networks that are, respectively, based on Mobile WiMAX, HSDPA, LTE, and WINNER I.
Our analysis shows that if sufficient crosspoint buffer space is allocated, a CICQ switch employing a typical scheduling algorithm, such as weighted fairing queueing (WFQ), can provide an identical bandwidth guarantee as the OQ switches without any switching fabric speedup, and can achieve equivalent delay performance as the OQ switch by slightly increasing bandwidth allocation.
