Parameter | Satellite network | Cellular networks | Wireless data networks |
---|---|---|---|
Bandwidth | High | Low to very high | High to very high |
 | (2 to 50 Mbps) | (0.17 to 14.4 Mbps) | (2 to 50 Mbps) |
 |  | (4G: 0.1 to 1 Gbps) | (WiMAX 2: 0.1 to 1 Gbps) |
Delay | Â | Low to very high | Very low |
 | (239.6 to 279.0 ms [10]) | (100 to 1,000 ms) | (<50 ms) |
 |  | (4G: <50 ms) |  |
Current coverage | International | National | Limited |
 | (but a clear line-of-sight is required) | (good for standards up to 3G, for | (new networks needed) |
 |  | most recent standards not fully achieved) |  |
Maximum train speed | Very high | High | Low to high |
 | (up to 500 km/h) | (up to 250 km/h) | (120 to 250 km/h) |
 |  |  | (WiMAX 2: >250 km/h) |
Technologies | DVB-S [11] | GPRS (2G) [12] | Wi-Fi [13] |
 | EDGE (2.75G) [16] | Flash-OFDM [17] | |
 | UMTS (3G) [20] | ||
 |  | HSPA (3.5G) [23] |  |
 |  | LTE (4G) [24] |  |
 |  | LTE-Advanced |  |