The Mars and Earth are two planets following different orbits around the Sun. The Earth is closer to the sun and it completes a circle in 365 days. The Mars is farther and takes 687 days to do the same. The minimum distance from the Earth to Mars is about 54.6 million kilometers. The farthest distance is about 401 million km. Thus to send a landing vehicular to Mars, the mission must be timed so that less energy is needed. Generally, the launching window only lasts for a month every two years. Assume the landing vehicular has landed on Mars.

(a) Calculate the maximum and minimum signal propagation delay between Earth and the landing vehicular (use 3x108m/sec as the signal speed).

(b) A communication channel is set up between the control station on earth and the landing vehicular. Can we use (error-detecting + retransmission) to do error recovery?

(c) Lets assume (b) is possible and we set up a TCP channel between the control station on earth and the landing vehicular on Mars. The window size of the TCP channel is 216 bytes for both directions. What is achievable bandwidth of this a TCP channel (use the average distance between the two planets in your calculation)?

- Ahw3_2021.pdf - Adobe Acrobat Reader DC (32-bit) File Edit View Sign Window Help Home Tools hw1_2021.pdf hw3_2021.pdf X Sign In 1 / 3 uay> 10 uu uc Saunc. IIIC 110111TTUm unstance HOM Wt Lam 10 IVIA 1 avoul 14.0 TTTTTTONI kilometers. The farthest distance is about 401 million km. Thus to send a landing vehicular to Mars, the mission must be timed so that less energy is needed. Generally, the launching window only lasts for a month every two years. 9 Mars Landing Vehicular Earth Sun Assume the landing vehicular has landed on Mars. (a) (3 pts) Calculate the maximum and minimum signal propagation delay between Earth and the landing vehicular (use 3x108m/sec as e > 1 the sional anaad hanta A communication channel is set un between the control station en ENG T 9:43 8/3/2021 - Ahw3_2021.pdf - Adobe Acrobat Reader DC (32-bit) File Edit View Sign Window Help Home Tools hw1_2021.pdf hw3_2021.pdf X Sign In 1 / 3 uay> 10 uu uc Saunc. IIIC 110111TTUm unstance HOM Wt Lam 10 IVIA 1 avoul 14.0 TTTTTTONI kilometers. The farthest distance is about 401 million km. Thus to send a landing vehicular to Mars, the mission must be timed so that less energy is needed. Generally, the launching window only lasts for a month every two years. 9 Mars Landing Vehicular Earth Sun Assume the landing vehicular has landed on Mars. (a) (3 pts) Calculate the maximum and minimum signal propagation delay between Earth and the landing vehicular (use 3x108m/sec as e > 1 the sional anaad hanta A communication channel is set un between the control station en ENG T 9:43 8/3/2021