An optimized QoS scheme for IMS-NEMO in heterogeneous networks

Authors:
Jianxin Liao;Qi Qi;Tonghong Li;Yufei Cao;Xiaomin Zhu;Jingyu Wang
Affiliations:
State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, P.R. China and EBUPT Information Technology Co., Ltd., Beijing 1001 ...;State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, P.R. China and EBUPT Information Technology Co., Ltd., Beijing 1001 ...;Technical University of Madrid, Madrid 28660, Spain;EBUPT Information Technology Co., Ltd., Beijing 100191, P.R. China;State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, P.R. China and EBUPT Information Technology Co., Ltd., Beijing 1001 ...;State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, P.R. China and EBUPT Information Technology Co., Ltd., Beijing 1001 ...
Venue:
International Journal of Communication Systems
Year:
2012

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Abstract

The network mobility (NEMO) is proposed to support the mobility management when users move as a whole. In IP Multimedia Subsystem (IMS), the individual Quality of Service (QoS) control for NEMO results in excessive signaling cost. On the other hand, current QoS schemes have two drawbacks: unawareness of the heterogeneous wireless environment and inefficient utilization of the reserved bandwidth. To solve these problems, we present a novel heterogeneous bandwidth sharing (HBS) scheme for QoS provision under IMS-based NEMO (IMS-NEMO). The HBS scheme selects the most suitable access network for each session and enables the new coming non-real-time sessions to share bandwidth with the Variable Bit Rate (VBR) coded media flows. The modeling and simulation results demonstrate that the HBS can satisfy users' QoS requirement and obtain a more efficient use of the scarce wireless bandwidth. Copyright © 2011 John Wiley & Sons, Ltd.