METHOD AND SYSTEM FOR RANDOM ACCESS PROCEDURE AND RADIO LINK FAILURE IN INTER-ENB CARRIER AGGREGATION

摘要

A method and system for configuring a User Equipment (UE) for dual connectivity mode of operation when the UE is carrier aggregated with one or more serving frequencies served by a Master eNB (MeNB) and one or more serving frequencies served by the Secondary eNB (SeNB). The method allows the UE to autonomously initiate the random access procedure on a SCell of the SeNB after adding or replacing SCell of the SeNB. Further, the method allows the UE to handle a Radio Link Failure (RLF) on one or more data radio bearers established between the UE and the SCell of the SeNB.

主权项

1. A method for performing a Random Access procedure by a User Equipment (UE) in a wireless network, the method comprising:
performing configuration with a Primary Cell (PCell) of a first evolved Node B (eNB) served on at least one first serving frequency and at least one Secondary Cell (SCell) of a first evolved Node B (eNB) served on at least one first serving frequency; transmitting a Random Access (RA) preamble on a Physical Random Access Channel (PRACH) to one of the at least one SCell; receiving a Random Access Response (RAR) message on a Physical Downlink Control Channel (PDCCH) from the one of the at least one SCell; and transmitting uplink data to the one of the at least one SCell.