Energy-Reduction Offloading Technique for Streaming Media Servers

Table 2

Offloading server transcoding.

(a) Summary values of energy, average power, and time consumption for offloading, streaming, and viewing

Video parameters	Time (s)	Avg. power consumption (mW)	Energy consumption (mAh)
480 × 272.2 Mbps	35.03	2005.88	5.28
960 × 545.2 Mbps	75.54	2171.14	12.31
240 × 186.2 Mbps	33.51	1965.72	4.95
480 × 272.4 Mbps	35.83	2114.71	5.69
480 × 272.1 Mbps	33.16	1988.58	4.95

(b) Values of energy, average power, and time consumption for video streaming only

Video parameters	Time (s)	Avg. power consumption (mW)	Energy consumption (mAh)
480 × 272.2 Mbps	17.04	1076.11	1.47
960 × 545.2 Mbps	34.07	1148.08	2.54
240 × 186.2 Mbps	16.67	991.28	1.50
480 × 272.4 Mbps	23.31	1201.35	2.22
480 × 272.1 Mbps	16.49	1268.12	1.39

(c) Values of energy, average power, and time consumption for video viewing only

Video parameters	Time (s)	Avg. power consumption (mW)	Energy consumption (mAh)
480 × 272.2 Mbps	30.00	1523.14	3.75
960 × 545.2 Mbps	70.94	2036.18	9.72
240 × 186.2 Mbps	30.00	1429.71	3.39
480 × 272.4 Mbps	30.00	1511.93	3.41
480 × 272.1 Mbps	30.00	1529.93	3.87

(d) Values of energy, average power, and time consumption for state offloading. Keeps the same over videos with different parameters

Time (s)	Avg. power consumption (mW)	Energy consumption (mAh)
3.87	1047.30	0.06