RAN enhancements for UMTS/HSPA and LTE interworking
The present document captures the results of the study item on RAN Enhancements for UMTS/HSPA and LTE Interworking in RP-122036[2]. It identifies the existing mobility functions for HSPA and LTE interworking, the use cases and requirements for enhancements, and reviews and compares scenarios and techniques for enhancement of interworking functionality. The evaluation and comparison between existing and enhanced solutions is also included.