US Patent No. 10,143,019

METHOD AND APPARATUS FOR SIGNALING BETWEEN ENBS IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING DUAL CONNECTIVITY


Patent No. 10,143,019
Issue Date November 27, 2018
Title Method And Apparatus For Signaling Between Enbs In A Wireless Communication System Supporting Dual Connectivity
Inventorship Jian Xu, Seoul (KR)
Kyungmin Park, Seoul (KR)
Daewook Byun, Seoul (KR)
Assignee LG Electronics Inc., Seoul (KR)

Claim of US Patent No. 10,143,019

1. A method for signaling between eNBs in a wireless communication system that support Dual Connectivity, comprising:transmitting, by a first eNB, an RRC connection reconfiguration message for transmission of a measurement report to a terminal;
receiving the measurement report from the terminal, when a reporting event occurs;
transmitting, by a first eNB, an eNB CONFIGURATION TRANSFER message for requesting a first TNL (transport network layer) address of a second eNB for Dual Connectivity to a MME (Mobility Management Entity),
wherein the eNB CONFIGURATION TRANSFER message includes a first ID for identifying the first eNB and a second ID for identifying the second eNB;
receiving, by the first eNB, a MME eNB CONFIGURATION TRANSFER message including the first TNL address from the MME;
transmitting, by the first eNB, an X2 SETUP REQUEST message for initiating X2 setup procedure to the second eNB;
receiving, by the first eNB, an X2 SETUP RESPONSE message from the second eNB in response to an X2 SETUP REQUEST message; and
transmitting and receiving, by the first eNB, signaling for the Dual Connectivity with the second eNB, if the second eNB supports the Dual Connectivity,
wherein the MME eNB CONFIGURATION TRANSFER message or the X2 SETUP RESPONSE message includes a first indication indicating whether the second eNB supports the Dual Connectivity function.