Patent ID: 7822063
Filing Date: 2010-10-26
Classification: H04B,H04L,H04Q

Abstract:
1. A bandwidth allocation method for transmitting data from an optical line terminal to an optical network unit in an Ethernet passive optical network, the bandwidth allocation method comprising: dividing, by the optical network unit, the data to be transmitted into at least a first group with a constant bit rate and a second group with a variable bit rate; receiving, at the optical line terminal, a request for a first requested bandwidth for the first group and a second requested bandwidth for the second group from the optical network unit; allocating, by the optical line terminal, the first requested bandwidth within a first bandwidth of an allocated bandwidth, the allocated bandwidth including the first bandwidth and a second bandwidth; and allocating the second requested bandwidth within a remaining bandwidth of the allocated bandwidth after allocating the first requested bandwidth, wherein the allocating the first requested bandwidth comprises allocating the first requested bandwidth and the second requested bandwidth is greater than the first bandwidth and the first requested bandwidth is not greater than the first bandwidth, and the allocating the second requested bandwidth within the remaining bandwidth of the first bandwidth and the second bandwidth if a sum of the remaining bandwidth of the first bandwidth and the second bandwidth is less than or equal to the second requested bandwidth.