When compared with monthly energy consumption of the RM, each one-sector or three-sector instance has significantly lower monthly consumptions (Figure 8).
As an example, we emphasize three-sector Instance 10 for 12.2/384 kb/s voice/data service rates with differences in energy consumption on a yearly level equal to 42,590.16 kWh.
Since we separately analyzed six different one-sector and three-sector instances for three different combinations of traffic pattern approximations, we obtained 108 optimization results in total.
Statistics presented in Figure 8a,b show variations in monthly energy consumption among analyzed one-sector and three-sector instances, respectively.
These differences are primarily due to the fact that we analyze different one-sector and three-sector instances in terms of allocation of BSSs and TCs (users).
We performed averaging of the monthly energy consumption since each of the one-sector and three-sector instances have the same number of macro BSSs with the possibility of transmitting using the same set of Tx powers.
For example, differences between the monthly energy consumption of the RM and averaged one-sector and three-sector instances when ensuring 12.2/128 kb/s service rates are equal to 6,468.85 and 22,929.35 kWh, respectively.
Figure 11 Trends in changes of energy savings coefficient for guaranteed voice/data service rates equal to 12.2/384 kb/s in the case of (a) one sector BSS (Instance 5), (b) three sector BSS (Instance 11). Figure 12 indicates the influence of switching granularity on monthly energy savings for all the combinations of voice/data service rates.
Figure 12 Coefficient of monthly energy savings for each of analyzed one and three sector BSS instance in case of voice/data service with guaranteed rates equal to (a, d) 12.2/384 kb/s, (b, e) 12.2/128 kb/s, (c, f) 12.2/64 kb/s.
China has been restoring export tax rebates for its textile sector, for instance, which it had been phasing out.
EU support to the education sector, for instance, is designed to get disabled children into mainstream schools by providing appropriate training and infrastructure and increasing community involvement.
