×

Dual connectivity mode of operation of a user equipment in a wireless communication network

  • US 10,064,051 B2
  • Filed: 01/19/2015
  • Issued: 08/28/2018
  • Est. Priority Date: 01/17/2014
  • Status: Active Grant
First Claim
Patent Images

1. A method for performing a change of a serving cell group (SCG) in a wireless communication system supporting a dual connectivity of a user equipment, the method comprising:

  • transmitting, by a secondary base station for the dual connectivity, a message including information indicating the change of the SCG to a master base station for the dual connectivity, to perform the change of the SCG; and

    receiving, by the secondary base station, a security key associated with the secondary base station, the security key being refreshed by the change of the SCG,wherein the information indicating the change of the SCG comprises information representing wraparound of a packet data convergence protocol (PDCP) count at the secondary base station.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×