In telecommunication, a shared medium is a medium or channel of information transfer that serves more than one user at the same time.
In order for most channels to function correctly, no more than one user can be transmitting at a time, so a channel access method must always be in effect.
In circuit switching, each user typically gets a fixed share of the channel capacity. A multiplexing scheme divides up the capacity of the medium. Common multiplexing schemes include time-division multiplexing and frequency-division multiplexing. Channel access methods for circuit switching include time-division multiple access, frequency-division multiple access, etc.
In packet switching, the sharing is more dynamic — each user takes up little or none of the capacity when idle, and can utilize the entire capacity if transmitting while all other users are idle. Channel access methods for packet switching include carrier-sense multiple access, token passing, etc.
References
- "Shared media LAN". PC Mag. Retrieved 24 August 2014.
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In telecommunication a shared medium is a medium or channel of information transfer that serves more than one user at the same time In order for most channels to function correctly no more than one user can be transmitting at a time so a channel access method must always be in effect In circuit switching each user typically gets a fixed share of the channel capacity A multiplexing scheme divides up the capacity of the medium Common multiplexing schemes include time division multiplexing and frequency division multiplexing Channel access methods for circuit switching include time division multiple access frequency division multiple access etc In packet switching the sharing is more dynamic each user takes up little or none of the capacity when idle and can utilize the entire capacity if transmitting while all other users are idle Channel access methods for packet switching include carrier sense multiple access token passing etc References Shared media LAN PC Mag Retrieved 24 August 2014 This article related to telecommunications is a stub You can help Wikipedia by expanding it vte
