Bandwidth guaranteed polling
Encyclopedia
Bandwidth Guaranteed Polling (BGP) is a dynamic bandwidth allocation
Dynamic bandwidth allocation
Dynamic bandwidth allocation is a technique by which traffic bandwidth in a shared telecommunications medium can be allocated on demand and fairly between different users of that bandwidth. This is a form of bandwidth management, and is essentially the same thing as statistical multiplexing...

 algorithm designed by Maode Ma et al. at the National University of Singapore
National University of Singapore
The National University of Singapore is Singapore's oldest university. It is the largest university in the country in terms of student enrollment and curriculum offered....

. This is an instance of an algorithm that allocates bandwidth
Bandwidth (computing)
In computer networking and computer science, bandwidth, network bandwidth, data bandwidth, or digital bandwidth is a measure of available or consumed data communication resources expressed in bits/second or multiples of it .Note that in textbooks on wireless communications, modem data transmission,...

 based on fixed weights.

BGP divides a window of time into fixed sized slots, a number of which are allocated to each Optical Network Unit (ONU). The number allocated depends upon the ONU customer's service level agreement (SLA). If an ONU does not wish to utilize its entire allocated time slot, it may inform the OLT about this. The OLT may then decide to reallocate the remaining time slot to another ONU which does not have an SLA.

The BGP algorithm may not be entirely compatible with the MPCP standard. This is because the MPCP does not provide any way for the ONU to inform the OLT about the fraction of the time slot that it wishes to use.
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