Routing of data transmission

A relay device comprising:

• a plurality of first communication units that receive data in different transmission schemes from one another;
• a plurality of second communication units that transmit data in different transmission schemes from one another;
• a route selector that estimates an available communication time based on a change in relative position to an other end of a communication, determines a communication route capable of transmitting a desired volume of data within the estimated available communication time and gives an instruction to transmit data from a second communication unit corresponding to the determined communication route, wherein the plurality of second communication units comprises the second communication unit;
• and
• a converter/sorter that converts data received by a first communication unit into a format compatible with a transmission scheme of the determined communication route, and outputs the converted data to the second communication unit indicated by the route selector, wherein the plurality of first communication units comprises the first communication unit, wherein
• the second communication unit corresponding to the determined communication route transmits the converted data.

A communication method comprising:

• estimating an available communication time based on a change in relative position to another end of a communication, determining a communication route capable of transmitting a desired volume of data within the estimated available communication time and giving an instruction to transmit data from a communication unit corresponding to the determined communication route;
• converting data into a format compatible with a transmission scheme of the determined communication route;
• and
• transmitting the converted data through the determined communication route.

A non-transitory computer readable medium storing a communication program causing a computer to execute:

• a search step of estimating an available communication time based on a change in relative position to an other end of a communication, determining a communication route capable of transmitting a desired volume of data within the estimated available communication time and giving an instruction to transmit data from a communication unit corresponding to the determined communication route;
• a conversion step of converting data into a format compatible with a transmission scheme of the determined communication route;
• and
• a transmitting step of transmitting the converted data through the determined communication route.