11th EAI International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness

Research Article

PFCS: Pre-buffering-aware Flow Control Scheme for LTE-Advanced Relay Networks

Download494 downloads
  • @INPROCEEDINGS{10.4108/eai.19-8-2015.2260852,
        author={Ping-Chen Lin and Ray-Guang Cheng and Xian Wang and Putu Ayu Rhamani Suryadhi},
        title={PFCS: Pre-buffering-aware Flow Control Scheme for LTE-Advanced Relay Networks},
        proceedings={11th EAI International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness},
        publisher={IEEE},
        proceedings_a={QSHINE},
        year={2015},
        month={9},
        keywords={lte-advanced relay pre-buffering scheme flow control scheme},
        doi={10.4108/eai.19-8-2015.2260852}
    }
    
  • Ping-Chen Lin
    Ray-Guang Cheng
    Xian Wang
    Putu Ayu Rhamani Suryadhi
    Year: 2015
    PFCS: Pre-buffering-aware Flow Control Scheme for LTE-Advanced Relay Networks
    QSHINE
    IEEE
    DOI: 10.4108/eai.19-8-2015.2260852
Ping-Chen Lin1, Ray-Guang Cheng1,*, Xian Wang2, Putu Ayu Rhamani Suryadhi1
  • 1: National Taiwan University of Science and Technology
  • 2: Southwest Jiaotong University
*Contact email: crg@mail.ntust.edu.tw

Abstract

Relay technology is one of the techniques proposed to enhance the capacity of Long Term Evolution-Advanced (LTEA) networks. In an LTE-A relay network, each serving relay node has to store packets for its mobile users and forward the remaining packets to another node during handover. However, increasing the number of forwarded packets will result in the degradation of the users throughput. Flow control and pre-buffering schemes are the two main schemes proposed to reduce the number of forwarded packets in LTE-A relay networks. Existing studies assumes the two schemes are independently operated. However, ignoring the effect of buffer overflow at the pre-buffering queue in a flow control scheme may result in ineffective operation. This paper presents a pre-buffering aware flow control scheme (PFCS) for an LTE-A relay network that jointly considers the effects of both flow control and pre-buffering schemes. The proposed PFCS can significantly improve user’s throughput by preventing both buffer overflow and buffer underflow of the local queue at the serving relay node and minimizing the number of forwarded packets. Simulation results show that the PFCS can provide a better throughput than the traditional flow control schemes because the effect of the pre-buffering scheme can minimize the number of forwarded packets.