Chang-Soo Park

Publications (2)0.49 Total impact

• Article: Analysis of upstream link bandwidth utilization in GPON with integrated network surveillance

  Hakjeon Bang, Madhan Thollabandi, Sungchang Kim, Dong-Soo Lee, Chang-Soo Park
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  ABSTRACT: We present a media access control protocol extension to integrate the physical layer surveillance concept into the transmission and the related management system in the Gigabit-capable passive optical network (GPON). We allocate an unused time slot for network surveillance depending upon its availability in the upstream GPON transmission convergence frame. We analyze the upstream link bandwidth utilization of the GPON system with network surveillance and show that there is a negligible amount of underutilization of link bandwidth as a result of this. KeywordsGigabit-passive optical networks (GPON)-Network surveillance-Reflective semiconductor optical amplifier (RSOA)-Media access control (MAC) protocol-Bandwidth allocation
  Photonic Network Communication 04/2012; 20(3):224-231. · 0.49 Impact Factor
• Conference Proceeding: Dynamic bandwidth allocation method for high link utilization to support NSR ONUs in GPON

  Hakjeon Bang, Sungchang Kim, Dong-Soo Lee, Chang-Soo Park
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  ABSTRACT: Non-status reporting (NSR) ONUs underutilize link capacity, since they do not inform queue occupancy to the optical line terminal (OLT) as well as traffics in access network are bursty. We suggest a dynamic bandwidth allocation (DBA) method to support NSR optical network units (ONUs) and to improve link utilization based on the Full Service Access Network (FSAN)-compliant gigabit passive optical network (GPON). Also, we simulate it to show how inevitable underutilization can be reduced through the proposed DBA method.
  Advanced Communication Technology (ICACT), 2010 The 12th International Conference on; 03/2010