Apple Inc.
LWIP enhancements for reliable DRB switching

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.