Question

Which among the following is a common control channel used by a radio to gain access to a system?

a.

Paging Channel

b.

Random Access Channel

c.

Access Grant Control Channel

d.

Cell Broadcast Channel

Posted under Cognitive Radio

Answer: (b).Random Access Channel Explanation:Common control channel transfers control information from a radio to a base-station. Random access channel is required to gain access to a system. It is invoked when the radio starts a call or replies to a page.

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Q. Which among the following is a common control channel used by a radio to gain access to a system?

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