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SCIENTIA SINICA Informationis, Volume 47 , Issue 5 : 529(2017) https://doi.org/10.1360/N112017-00040

System design and software-defined implementation for hyper-cellular network

More info
  • ReceivedFeb 15, 2017
  • AcceptedMar 21, 2017
  • PublishedMay 8, 2017

Abstract


Funded by

国家重点基础研究发展计划(973)(2012CB316000)

国家自然科学基金łinebreak(61461136004,61571265,91638204)

  • Figure 1

    Sketch map for the separation of control coverage and traffic coverage in hyper-cellular network

  • Figure 2

    Flow chart of data service for GPRS system with separated architecture

  • Figure 3

    Signaling procedure of scheduling TBS

  • Figure 4

    RRC connection setup process under separated architecture

  • Figure 5

    LTE protocol stacks and signaling flow in HCN

  • Figure 6

    (Color online) Practicality picture of GSM and GPRS platform in HCN

  • Figure 7

    (a) Distribution of separation delay cost; (b) distribution of setup time; (c) distribution of close-down time

  • Figure 8

    System architecture of LTE demonstration platform in HCN

  • Figure 9

    (Color online) Practicality picture of LTE demonstration platform in HCN

  • Table 1   Base station channel division scheme for GSM and GPRS system
    Channel TBS CBS
    BCH (FCCH, SCH, BCCH) Checkmark
    CCCH (PCH, RACH, AGCH) Checkmark
    PACCH Checkmark
    TCH Checkmark
    PDTCH Checkmark
  • Table 2   Base station channel division scheme for LTE system
    Logical channel Physical channel Functionality CBS TBS
    PSS, SSS, RS Synchronization and channel estimation Checkmark
    BCCH PBCH, PDSCH Broadcast system information Checkmark
    PCCH PDSCH Paging Checkmark
    PRACH Random access Checkmark
    CCCH PDSCH, PUSCH Transmit SRB0 Checkmark
    DCCH PDSCH, PUSCH Transmit SRB1, SRB2 Checkmark
    DTCH PDSCH, PUSCH Transmit user data Checkmark
  • Table 3   Comparison of system energy consumption (Unit: W)
    Component No sleep Half sleep Null sleep
    PC 346 319 129
    USRP 41.4 13.8 13.8
    Switch 21 21 21
    Total 408.4 344.8 163.8
  • Table 4   Software and hardware of cloud-based demonstration platform in HCN
    Layer Software / Hardware
    Application OpenBTS, Asterisk, OAI
    Virtualization layer Docker 1.2.0
    Operating system layer Ubuntu 14.04.1 LTS (Kernel 3.13.0-43-generic)
    Hardware layer USRP N210, IBM x3650