US Patent No. 10,342,065

METHOD AND APPARATUS FOR OPERATING AT CELL NOT SUPPORTING EXTENDED DRX IN WIRELESS COMMUNICATION SYSTEM


Patent No. 10,342,065
Issue Date July 02, 2019
Title Method And Apparatus For Operating At Cell Not Supporting Extended Drx In Wireless Communication System
Inventorship Youngdae Lee, Seoul (KR)
Jinsook Ryu, Seoul (KR)
Assignee LG ELECTRONICS INC., Seoul (KR)

Claim of US Patent No. 10,342,065

1. A method performed by a user equipment (UE) supporting an extended discontinuous reception (eDRX) in a wireless communication system, the method comprising:receiving, from a serving cell, system information informing that the serving cell does not support the eDRX;
transmitting a tracking area update (TAU) message to a mobility management entity (MME);
receiving a downlink message for a normal DRX cycle from the MME;
monitoring a paging signal in a radio resource control (RRC) idle mode based on the normal DRX cycle at the serving cell;
deprioritizing a cell reselection priority for the serving cell which does not support the eDRX;
performing cell reselection to another cell which supports the eDRX, based on the deprioritized cell reselection priority; and
monitoring a paging signal based on a eDRX cycle, which is longer than the normal DRX cycle, at the another cell.