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LTE RACH: What the data preamble

+1 vote
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In spec 36.321 it is being told that while deciding upon which preamble group to choose for RAP delta preamble is used.

In spec it is being told that it a preamble format based offset but I am not getting what the data preamble actually is?

posted Aug 6, 2014 by anonymous

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0 votes

During preamble transmission, how devices choose the frequency band in PRACH for preamble transmission?

If they choose the frequency in PRACH randomly, then there can be the chance of sub-channel(frequency band to send preamble) collision. If above statement is true then how many devices can send the preamble at a random access time slot?

+3 votes

Actually i am trying to learn RACH procedures and getting lots of hurdles to understand. I am posting my queries whatever is coming to my mind so that i will get the descriptive answers. I hope someone will help me here to learn it. Thanks in advance.

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