forumuser-2008
2014-05-31, 07:27 PM
Dear friends,
If anyone has detail information about False Alarm Probability in LTE, then please explain (if possible :) ).
What is the relation between Random Access and FAP?
As I know UE choose randomly one of 64 preambles and sends the preamble value to eNodeB, then eNodeB sends RA Response and so on...
But how eNodeB can consider the received signal as a RA request when the signal level is above than Preamble Detection Threshold? I don't understand this, actually there is no any user. Just eNodeB receives uplink signals (stronger than -106dBm) and it consider that it is a RA request then it sends RA Response. Of course it will not receive Connection Request from UE (because there is no any user).
Consequenctly RA Success Rate is 0%. Let say there is UL interference in the cell, but I don't think eNodeB will consider all the received signals as RA request which are more than Preamble Detection Threshold.
If anyone has detail information about False Alarm Probability in LTE, then please explain (if possible :) ).
What is the relation between Random Access and FAP?
As I know UE choose randomly one of 64 preambles and sends the preamble value to eNodeB, then eNodeB sends RA Response and so on...
But how eNodeB can consider the received signal as a RA request when the signal level is above than Preamble Detection Threshold? I don't understand this, actually there is no any user. Just eNodeB receives uplink signals (stronger than -106dBm) and it consider that it is a RA request then it sends RA Response. Of course it will not receive Connection Request from UE (because there is no any user).
Consequenctly RA Success Rate is 0%. Let say there is UL interference in the cell, but I don't think eNodeB will consider all the received signals as RA request which are more than Preamble Detection Threshold.