Method and apparatus for dynamically allocating upstream...

Details Method and apparatus for dynamically allocating upstream... Method and apparatus for dynamically allocating upstream...

2004-08-30

2008-10-14

Chan, Wing F. (Department: 2619)

Multiplex communications

Data flow congestion prevention or control

Control of data admission to the network

C370S236000

Reexamination Certificate

active

07436765

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 the out-going uplink according to a set of SLAs.

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patent: 1 130 841 (2001-09-01), None
patent: WO 02/37730 (2002-05-01), None

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