中国邮电高校学报(英文)

• Wireless •    下一篇

Energy-efficient joint relay node selection and power allocation over multihop relaying cellular networks toward LTE-Advanced

陈丹 纪红 李曦   

  1. College of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China
  • 收稿日期:2010-11-05 修回日期:2011-02-24 出版日期:2011-06-30 发布日期:2011-06-30
  • 通讯作者: 陈丹 E-mail:danchen1986@gmail.com
  • 基金资助:

    This work was supported by the National Major Science and Technology Project (2009ZX03002-014), the National Natural Science Foundation of China (60832009), the Beijing Municipal Natural Science Foundation (4102044), and the National Natural Science Foundation for Distinguished Young Scholar (61001115).

Energy-efficient joint relay node selection and power allocation over multihop relaying cellular networks toward LTE-Advanced

  1. College of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China
  • Received:2010-11-05 Revised:2011-02-24 Online:2011-06-30 Published:2011-06-30
  • Contact: Chen Dan E-mail:danchen1986@gmail.com
  • Supported by:

    This work was supported by the National Major Science and Technology Project (2009ZX03002-014), the National Natural Science Foundation of China (60832009), the Beijing Municipal Natural Science Foundation (4102044), and the National Natural Science Foundation for Distinguished Young Scholar (61001115).

摘要:

Cooperative relaying is emerging as an effective technology to fulfill requirements on high data rate coverage in next-generation cellular networks, like long term evolution-advanced (LTE-Advanced). In this paper, we propose a distributed joint relay node (RN) selection and power allocation scheme over multihop relaying cellular networks toward LTE-Advanced, taking both the wireless channel state and RNs’ residual energy into consideration. We formulate the multihop relaying cellular network as a restless bandit system. The first-order finite-state Markov chain is used to characterize the time-varying channel and residual energy state transitions. With this stochastic optimization formulation, the optimal policy has indexability property that dramatically reduces the computational complexity. Simulation results demonstrate that the proposed scheme can efficiently enhance the expected system reward, compared with other existing algorithms

关键词:

cooperative relaying, LTE-Advanced, relay selection, power allocation, residual energy, restless bandit

Abstract:

Cooperative relaying is emerging as an effective technology to fulfill requirements on high data rate coverage in next-generation cellular networks, like long term evolution-advanced (LTE-Advanced). In this paper, we propose a distributed joint relay node (RN) selection and power allocation scheme over multihop relaying cellular networks toward LTE-Advanced, taking both the wireless channel state and RNs’ residual energy into consideration. We formulate the multihop relaying cellular network as a restless bandit system. The first-order finite-state Markov chain is used to characterize the time-varying channel and residual energy state transitions. With this stochastic optimization formulation, the optimal policy has indexability property that dramatically reduces the computational complexity. Simulation results demonstrate that the proposed scheme can efficiently enhance the expected system reward, compared with other existing algorithms

Key words:

cooperative relaying, LTE-Advanced, relay selection, power allocation, residual energy, restless bandit

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