Method and apparatus for dynamically allocating upstream bandwidth in passive optical networks
US7436765B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2004 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Jul 28, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0064
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
One embodiment of the present invention provides a system that facilitates dynamic allocation of upstream bandwidth in a passive optical network which includes a central node and at least one remote node. Each remote node is coupled to at least one logical entity and includes a number of queues, each of which is associated with a logical entity and stores upstream data from the logical entity. The central node is coupled to an external network through a shared out-going uplink. During operation, the system receives a request from a remote node for a grant to transmit upstream data from a logical entity, wherein the request reports the state of a queue associated with a logical entity; wherein the size of the data to be transmitted does not exceed a transmission threshold assigned to that logical entity, and wherein a logical entity may not request more than what is allowed by the corresponding transmission threshold. If the request satisfies a bandwidth allocation policy, the system issues a grant to the remote node to transmit upstream data. In response to the grant, the system receives upstream data from the remote node. Next, the system transmits the received upstream data to th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.