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Express Learning: Data Communications and Computer Networks by ITL Education Solutions Limited

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8

Media Access Control

1. Write a short note on channel allocation.

Ans: In a broadcast (or multipoint) network, multiple users (stations) use a single broadcast channel to communicate with each other. In case more than one user wish to access the shared channel at the same time, the channel is allocated to one of the competing users at one time. This is called channel allocation. The decision to allocate the channel among the competing users can be made using any of the two schemes, namely, static channel allocation and dynamic channel allocation.

Static Channel Allocation

In this scheme, a single channel can be shared among multiple users using either frequency division multiplexing (FDM) or time division multiplexing (TDM) technique. In ...

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