US Patent No. 10,172,166

METHOD AND APPARATUS FOR HANDLING E-RAB SWITCH PROBLEM FOR DUAL CONNECTIVITY IN WIRELESS COMMUNICATION SYSTEM


Patent No. 10,172,166
Issue Date January 01, 2019
Title Method And Apparatus For Handling E-rab Switch Problem For Dual Connectivity In Wireless Communication System
Inventorship Jian Xu, Seoul (KR)
Daewook Byun, Seoul (KR)
Assignee LG ELECTRONICS INC., Seoul (KR)

Claim of US Patent No. 10,172,166

1. A method for handling, by a master evolved NodeB (MeNB) in dual connectivity, evolved universal terrestrial radio access network (E-UTRAN) radio access bearer (E-RAB) switch failure for dual connectivity in a wireless communication system, the method comprising:receiving an E-RAB modification confirm message including a list of E-RABs failed to be modified from a mobility management entity (MME);
keeping old general packet radio service (GPRS) tunneling protocol (GTP) tunnels for the E-RABs failed to be modified; and
triggering a secondary eNB (SeNB) release procedure or a SeNB modification procedure for releasing secondary cell group (SCG) bearers corresponding to the E-RABs failed to be modified.