In this paper we present three context transfer mechanisms to support seamless (inter-system) handover: L2 tunnel, SDU reconstruction and SDU context transfer. The hand-over schemes are evaluated for services based on TCP SACK. The influence of different system parameters like the link layer round trip time and block error rate are investigated. It is shown that there can be large differences in handover performance caused by packet loss or packet duplication, which interact with TCP congestion control. L2 tunnel always performs best but has the highest complexity. It is followed by SDU reconstruction and then SDU context transfer respectively. All schemes are always better in performance than when no context transfer is used
Published in:
Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th International Symposium on
Date of Conference: 11-14 Sept. 2006