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 ChannelI got this question in quiz.The doubt is from Next Generation Wireless Network in chapter Next Generation Wireless Network of Cognitive Radio

Which among the following is a common control channel used by a radio

1.	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 ChannelI got this question in quiz.The doubt is from Next Generation Wireless Network in chapter Next Generation Wireless Network of Cognitive Radio
Answer» Right answer is (b) Random Access Channel For explanation I would say: 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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