Welcome to the ZyXEL Networking Glossary - your definitive source for descriptions of networking terms and ZyXEL's product features.
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Preamble and WiMAX
A preamble is an index identifier in the header of a base station's broadcast messages. In the beginning of a mobile station (MS) network entry process, the MS searches the preamble and uses it to get further channel characteristics information. It is used to synchronize the upstream and downstream transmission timing with the base station.