公开(公告)号：US11122643B2

公开(公告)日：2021-09-14

申请号：US16086141

申请日：2016-08-30

Applicant: Apple Inc.

Inventor： Jing Zhu ,  Nana Zhang

IPC: H04W76/22 ,  H04L1/16 ,  H04L1/18 ,  H04W28/04

Abstract: Embodiments of LWTP (long term evolution (LTE)/wireless local area network (WLAN) radio level integration Protocol) enhancements for reliable data radio bearer (DRB) switching are disclosed. A user equipment (UE) decodes a radio resource control (RRC) connection reconfiguration message, received from an evolved NodeB (eNB), the RRC connection reconfiguration message indicting switching DRBs from a first wireless transmission mode to second wireless transmission mode, and the RRC connection reconfiguration message including an uplink (UL) status report indicating a first missing UL sequence number, the UL status report being a UL LWIP status report. The UE causes reconfiguration of the UE according to the RRC connection reconfiguration message. The UE encodes, for transmission to the eNB, a RRC connection reconfiguration complete message. The UE encodes, for retransmission over the second wireless transmission mode, lost service data unit(s) (SDU) based on the UL status report.