IoT as a Service. Third International Conference, IoTaaS 2017, Taichung, Taiwan, September 20–22, 2017, Proceedings

Research Article

Semi-granted Sparse Code Multiple Access (SCMA) for 5G Networks (Invited Paper)

Download
658 downloads
  • @INPROCEEDINGS{10.1007/978-3-030-00410-1_44,
        author={Mao Yang and Bo Li and Zhicheng Bai and Xiaoya Zuo and Zhongjiang Yan and Yusheng Liang},
        title={Semi-granted Sparse Code Multiple Access (SCMA) for 5G Networks (Invited Paper)},
        proceedings={IoT as a Service. Third International Conference, IoTaaS 2017, Taichung, Taiwan, September 20--22, 2017, Proceedings},
        proceedings_a={IOTAAS},
        year={2018},
        month={10},
        keywords={Sparse code multiple access SCMA Non-orthogonal multiple access Multiple access Grant-free 5G},
        doi={10.1007/978-3-030-00410-1_44}
    }
    
  • Mao Yang
    Bo Li
    Zhicheng Bai
    Xiaoya Zuo
    Zhongjiang Yan
    Yusheng Liang
    Year: 2018
    Semi-granted Sparse Code Multiple Access (SCMA) for 5G Networks (Invited Paper)
    IOTAAS
    Springer
    DOI: 10.1007/978-3-030-00410-1_44
Mao Yang1,*, Bo Li1,*, Zhicheng Bai1, Xiaoya Zuo1,*, Zhongjiang Yan1,*, Yusheng Liang1
  • 1: Northwestern Polytechnical University
*Contact email: yangmao@nwpu.edu.cn, libo.npu@nwpu.edu.cn, zuoxy@nwpu.edu.cn, zhjyan@nwpu.edu.cn

Abstract

Sparse Code Multiple Access (SCMA) is a promising non-orthogonal multiple access technology for 5G radio access networks. It improves the connectivity and capacity. However, the two multiple access methods of SCMA: granted and grant-free cannot dynamically match the real-time demands since the resources allocated for the granted method and grant-free method are clearly separated with each other. This further deteriorates the system performance. This article proposes a semi-granted SCMA method, by enabling the granted demands and grant-free demands to share the same resources. Simulation results confirm that semi-granted SCMA matches the dynamically fluent demands and significantly improve the throughput of SCMA 5G system.