Acta Metallurgica Sinica(English letters) ›› 2013, Vol. 20 ›› Issue (5): 16-21.doi: 10.1016/S1005-8885(13)60084-9

• Networks • Previous Articles     Next Articles

QoS-aware scheduling algorithm in relay-assisted LTE-A system

Gang Chuai,Yu XiaoLiang   

  1. 1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China 2. Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2013-05-31 Revised:2013-08-29 Online:2013-10-30 Published:2013-10-29
  • Contact: Yu XiaoLiang
  • Supported by:
    This work was supported by the Major National Science & Technology Specific Project of China (2010ZX03002-002-03).

Abstract: This paper details on the uplink scheduling algorithm for long term evolution advanced (LTE-A) system with relays. While emulating quality of service (QoS)-aware services with different bit-rate and delay budget requirements for the upstream direction, a new QoS-aware scheduling algorithm for in-band relays is proposed. In this work, an improved scheduling metric calculation method and bit-rate guarantee scheme is applied. Moreover, this algorithm proposes an efficient scheme for the backhaul link allocation which allows information of the most backlogged users to be transmitted first. Finally, this paper concludes with simulation results to demonstrate how the proposed resource allocation strategy improves the performance of the system.

Key words: relay station, scheduling algorithm, guaranteed bit rate (GBR), backhaul link, access link

CLC Number: