Acta Metallurgica Sinica(English letters) ›› 2013, Vol. 20 ›› Issue (5): 1-8.doi: 10.1016/S1005-8885(13)60082-5

• Networks •    下一篇

Dynamic traffic split scheme in an integrated LTE and HSDPA networks

杨瑞明1,常永宇2,杨大成1   

  1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2013-05-06 修回日期:2013-08-28 出版日期:2013-10-30 发布日期:2013-10-29
  • 通讯作者: 杨瑞明 E-mail:yymdbd@gmail.com
  • 基金资助:
    This work was supported by the Research Fund of ZTE Corporation.

Dynamic traffic split scheme in an integrated LTE and HSDPA networks

  1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2013-05-06 Revised:2013-08-28 Online:2013-10-30 Published:2013-10-29
  • Contact: Rui-Ming Yang E-mail:yymdbd@gmail.com
  • Supported by:
    This work was supported by the Research Fund of ZTE Corporation.

摘要: In the future, the wireless communication networks can be visualized as the integration of different radio access technologies (RATs), which are referred to as heterogeneous wireless networks (HWNs). In this paper, the traffic split scheme in the HWNs integrating the long term evolution (LTE) and the high speed downlink packet access (HSDPA) networks is investigated. Assuming that the networks can support multi-homing access and the user can be served by both networks simultaneously, the traffic split problem is described as an optimization problem with the aim of maximizing the throughput. By solving the problem, the dynamic traffic split scheme is proposed. The split ratios in the scheme should be proportional to the transmission rates in theory, which are hard to be described in the closed forms. Then the adaptive algorithm is proposed to obtain the split ratios. Simulation results show that the scheme with the adaptive algorithm provides better performance than the scheme without it over the additive white Gaussian noise (AWGN) fading channel and Rayleigh fading channel.

关键词: HWNs, multi-homing access, traffic split, common radio resource management (CRRM)

Abstract: In the future, the wireless communication networks can be visualized as the integration of different radio access technologies (RATs), which are referred to as heterogeneous wireless networks (HWNs). In this paper, the traffic split scheme in the HWNs integrating the long term evolution (LTE) and the high speed downlink packet access (HSDPA) networks is investigated. Assuming that the networks can support multi-homing access and the user can be served by both networks simultaneously, the traffic split problem is described as an optimization problem with the aim of maximizing the throughput. By solving the problem, the dynamic traffic split scheme is proposed. The split ratios in the scheme should be proportional to the transmission rates in theory, which are hard to be described in the closed forms. Then the adaptive algorithm is proposed to obtain the split ratios. Simulation results show that the scheme with the adaptive algorithm provides better performance than the scheme without it over the additive white Gaussian noise (AWGN) fading channel and Rayleigh fading channel.

Key words: HWNs, multi-homing access, traffic split, common radio resource management (CRRM)