Mar

Cisco: Routers in space has been successfully carried out in-orbit testing

Recently, world-renowned provider of network hardware, Cisco Systems announced that Internet Routing In Space (IRIS) program's first installed on the satellite-based IP (InternetProtocol, Internet Protocol) router has been successfully carried out in-orbit testing, marking the Internet routing was finally out of the Earth toward the space. However, this high-tech development, the birth of the public life of what will change? Its development of human society which will play a role in promoting?

specific cases

traditional satellite communications modes: for example, living in Guangzhou, you dial long-distance phone calls to friends in America, at present the whole process of communication is: first, through the domestic long-distance call processing center, which it has put your phone line and dedicated satellite connectivity to China, satellite will then pass the information back to ground stations, through an inter-continental link, send to another ground station, ground stations to reach the United States dedicated satellite re-transmission of the final then telephone signal sent to the addressee (ie your friend) is located City long-distance call processing center switching users.

space routing after use: When the Internet space, put up, the long-distance transoceanic communication process becomes simplified: you dial long-distance phone, long distance calls through the ground processing center connected to the satellite, due to installation of the IP router , direct connectivity between the two satellite communications, the signal is sent directly into the United States dedicated satellite, through the United States long-distance call processing center transferred to the user.

questions:

Benefits:

Traditional satellite communications process is simplified to reduce latency

The so-called IRIS (InternetRoutinginSpace, Internet Routing In Space) program is the U.S. Department of Defense Joint Capability Technology Demonstration program as part of by Cisco Systems and Intelsat satellite company responsible for the implementation. Intelsat's first space router with the IS-14 commercial satellites, together, on November 23 last year by AtalsV rocket. Cisco's development of space routing purpose is to simplify the inter-satellite communication. According to reports, IRIS plans can be a satellite in space between the sending IP data packets, working principle similar to the Internet on the ground, which reduce data transmission delay, save bandwidth satellite communications to provide greater network flexibility.

the future, installed on the satellite-based router will determine the direct transmission of the next satellite, eliminating the need for ground staff to intervene.

the biggest advantages of this technology is to make the direct inter-satellite communication, audio and video transmission to reduce the delay. Satellite Adviser MarkChartrand, due to the current routing can only be carried out on the ground, so each packet transmitted by a satellite to another satellite, they all need to send to the ground base station, and then transmitted from the ground base station, and each time has produced forward quarter-second delay.

transmission of large capacity to reduce costs

According to Cisco's relevant responsible person said, the Internet, satellite connections are point to point connection is not continuous, because in space there is no reason why the router . If you have a router, communications satellites, ground through different base stations or satellite, they can receive IP data packets, and these packets are sent to multiple places, and thus needed to establish a new connection at any time. This departure from past tradition of selecting and hiring compared to a specific connection, users need to pay for satellite service fee will be lower.

In addition, the use of the space router, the establishment of space IP network integration services can be achieved. This allows us to eliminate the need for satellite TV, telephone services, to provide independent dedicated hardware.

To put it simply, the future Volkswagen customers the use of satellite communications, the content transmission speed will be faster, cost will be cheaper.

of high military value

Since the military satellite communications technology can improve efficiency and reduce costs, therefore, the U.S. military is also actively promoting the program.

Compared with traditional satellite transmission, the flagship and destroyers have been among the only few miles apart, but their communication needs between the different satellite and terrestrial networks to pass on several occasions to reach their destinations.

If the Internet space, the formal structures and practical, in addition to military communications to reduce costs, improve communication skills, the future of warships at sea, the crew can swim the Internet.

space, still facing the Internet to build a real multi-issue, which carried out in-orbit testing is just a start.

First of all, the space of the Internet in media access and frequency is as yet no common standards, therefore, develop a standards-based technology is the future of the major hardware manufacturers and providers to work together to direction.

Secondly, is the space router performance improved. Currently, space-group router has only three transponders per second up to 300 users with a total handling capacity of about 90MB. If you really want to interact to form multiple satellite Internet access, routers, urgent need to enhance performance.

Furthermore, according to Cisco's introduction, space router into space, equipment, every component will withstand the test of a large number of rays, the expected life of 15 years. Although the space is extremely cold, but the router, the heat is still very difficult problem. The reason is that space is a vacuum environment, there is no air convection and, therefore, the heat on the router can not be taken away. At present, the router can only be connected by installing the heat sink and space to heat.

At the same time, the power supply is a not a small problem. Although such satellites will own the solar panels can provide 5000 to 7000 watts of power, but the router can only get them a small portion of electricity supply.