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NETWORK SYSTEM, OPTICAL NETWORK UNIT AND OPTICAL LINE TERMINAL

  • US 20090162063A1
  • Filed: 12/18/2008
  • Published: 06/25/2009
  • Est. Priority Date: 12/21/2007
  • Status: Active Grant
First Claim
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1. A network system comprising:

  • a first OLT (Optical Line Terminal), a second OLT, a first ONU (Optical Network Unit), and a second ONU,wherein the first OLT and the second OLT are connected to the first ONU and the second ONU through an optical fiber shared by the first OLT and the second OLT such that data is transmitted between the first OLT and the first ONU and between the second OLT and the second ONU,the first OLT and the second OLT mutually share uplink communication band allocation information so that each of the first and second ONUs transmits an uplink frame, andthe first OLT allocates the uplink communication band to the first ONU by avoiding the uplink communication band that is allocated to the second ONU, and allocates the uplink communication band to the second ONU.

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