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LTE: What is the content of contention resolution ?

+6 votes
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LTE: What is the content of contention resolution ?
posted Oct 27, 2013 by Ganesh Kumar

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2 Answers

+2 votes

as per 3gpp 36.321 (v-a50) sec-5.1.5 "Contention Resolution", following is stated:-
"UE Contention Resolution Identity included in the MAC control element matches the CCCH SDU transmitted in Msg3"

answer Oct 28, 2013 by anonymous
+1 vote

Contention resolution is required whenever two preambles with same value reach at eNodeB at the same time. Then eNodeB MAC layer can proceed with one of these request so it needs to communicate to the UE which is got selected by eNodeB MAC. This information is carried in contention resolution.

Till msg3 conversation , UE can be identified by C-RNTI. As far as I know "eNodeB send same message3 (RRC Connection Request or RRC Connection Reestablishment Request) along with assigned C-RNTI to the intended UE.

Please correct me if I am wrong.

answer Oct 27, 2013 by Vimal Kumar Mishra
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