eNodeB requests to UE to read the SIB/CGI of the neighbor cell and report the CGI of the neighbor cell to eNodeB through measurement report. After getting the reportCGI from UE, eNodeB adds the neighbor information in the NRT.
what is difference between UEID IE of rrc connection request and IMSI ?
RRC Connection Request message carries "Initial UE identity" which is just 5 bytes long identifier. Why does so many information elements send within the "Re-establish UE-Identity" like C-RNTI, physcellId etc ?