For contention based RACH procedure I have doubt for message 4.
Message 4 is rrc connection setup, but I find in few docs msg4 refer to contention resolution as well, Where UE compares tc crnti with crnti then it’s pass for contention?
What exactly msg 4 here?
Msg1 random acess request
Msg 2 random access response having tc crnti
Msg3 rrc connection request having crnti
Msg 4 is it rrc connection setup or contention resolution message where contention resolution done?