Editing Satellite Internet access (section)

==One-way broadcast==
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One-way broadcast satellite Internet systems are used for [[Internet Protocol]] (IP) [[broadcast]]-based data, audio and video distribution. In the United States, a [[Federal Communications Commission]] (FCC) license is required only for the uplink station, not for its users. Note that most Internet protocols will not work correctly over one-way access, since they require a return channel. However, Internet content such as [[web page]]s can still be distributed over a one-way system by "pushing" them out to local storage at end user sites, though full interactivity is not possible. This is much like TV or radio content which offers little user interface.

The broadcast mechanism may include compression and error correction to help ensure the one-way broadcast is properly received. The data may also be rebroadcast periodically, so that receivers that did not previously succeed will have additional chances to try downloading again.

The data may also be encrypted so that while anyone can receive the data, only certain destinations are able to actually decode and use the broadcast data. Authorized users only need to have possession of either a short [[Key (cryptography)|decryption key]] or an automatic [[rolling code]] device that uses its own highly accurate independent timing mechanism to decrypt the data.

===System hardware components===
Similar to one-way terrestrial return, satellite Internet access may include interfaces to the [[public switched telephone network]] for squawk box applications. An Internet connection is not required, but many applications include a [[File Transfer Protocol]] (FTP) server to queue data for broadcast.

===System software components===
Most one-way broadcast applications require custom programming at the remote sites. The software at the remote site must filter, store, present a selection interface to and display the data. The software at the transmitting station must provide access control, priority queuing, sending, and encapsulating of the data.

=== Services ===
Emerging commercial services in this area include:
* [[Outernet]] – Satellite constellation technology