Method, device, and nested system for allocating uplink and downlink bandwidth

Patent metadata

Field	Value
Publication number	US-9203545-B2
Application number	US-201414316506-A
Country	US
Kind code	B2
Filing date	Jun 26, 2014
Priority date	Feb 29, 2012
Publication date	Dec 1, 2015
Grant date	Dec 1, 2015

Abstract

A method for allocating uplink and downlink bandwidth, includes: receiving, by a primary ONU, a primary PON downlink frame sent by a nested OLT, where the primary PON downlink frame carries a primary ONU uplink bandwidth grant and a secondary ONU uplink bandwidth grant; parsing, by the primary ONU, the primary PON downlink frame to acquire the primary ONU uplink bandwidth grant and the secondary ONU uplink bandwidth grant; and sending, by the primary ONU, a secondary PON downlink frame to a secondary ONU, where the secondary PON downlink frame carries the acquired secondary ONU uplink bandwidth grant. The present disclosure achieves an optimal overall performance for the two stages of PONs by considering general conditions of the two stages of PONs, and meanwhile ensures a maximum available bandwidth for the two stages of PONs during formulation of bandwidth grants.

First claim

What is claimed is:

1. A method for allocating downlink bandwidth in a nested passive optical network (PON), comprising:
receiving, by a primary optical network unit (ONU), a primary PON downlink frame from a nested optical line terminal (OLT), wherein the primary PON downlink frame carries primary PON downlink user service data, secondary PON user service data, primary PON overhead, and secondary PON overhead;
parsing, by the primary ONU, the primary PON downlink frame to acqui…

Assignees

• Huawei Tech Co Ltd

Inventors

• Zheng Ruobin
• Chen Xue
• Hu Xintian

Classifications

• H04B10/27

  Electricity · mapped topic

• H04J3/1694

  Electricity · mapped topic

• H04Q2011/0064

  Electricity · mapped topic

• H04Q11/0067 Primary

  Electricity · mapped topic

• H04J14/08 Primary

  Electricity · mapped topic