Figure 1.

Figure 2.

Figure 3.

NUMBER OF SITES AND AVERAGE WASTAGE
| First jump/second jump | Host station | child station | satellite | Average loss (dB) |
|---|---|---|---|---|
| 20/10 | 222 | 778 | 28 | 111.79 |
| 15/8 | 385 | 610 | 49 | 109.44 |
| 12/6 | 588 | 410 | 74 | 107.30 |
NOTATION TABLE
| symbols | Meaning |
|---|---|
| LOS | Line-of-sight transmission capability |
| ROI | Return on investment |
| NLOS | Non-line-of-sight transmission capability |
| RRN | The infinite return device of the infinite return scheme |
| RN | Relay station |
| UE | Ordinary mobile phone |
| PL | Path to the consumption |
| APL | Average path consumption |
| D | Site spacing |
| F | Transmission frequency |
| R | Radius of the earth |
| S | The distance between the spheres |
| αi | I point longitude |
| β i | I point the dimension |
| i | Base station identification |
| Xi | The host site |
| Yi | The child site |
| Zi | Satellite point |
| C | The overall cost |
| FD | The first jump distance |
| ND | After each jump distance |
| FXi | Butterfly host station |
| RXi | Star host station |
| WL | Microwave connections between host stations |
| WBL | Wireless return connection between host station and sub-station and between sub-stations |
| JS | The number of hops from a substation to a host station |
| Ceil | The function that rounds up |
SHOWS THE COSTS OF VARIOUS MODES OF TRANSMISSION IN WUSD
| transport | cost |
|---|---|
| host station | 10 |
| child station | 5 |
| satellite | 50 |
COST COMPARISON TABLE
| Radius (km) | Host station | child station | satellite | Overall cost (WUSD) |
|---|---|---|---|---|
| 20 | 222 | 778 | 28 | 7510 |
| 25 | 136 | 858 | 17 | 6500 |
| 30 | 110 | 871 | 14 | 6155 |