Patent ID: 8964538
Filing Date: 2015-02-24
Classification: H04L,H04Q

Abstract:
1. An optical network unit (ONU) comprising: a user network interface configured to receive from a network a plurality of packets to be transmitted upstream over a passive optical network (PON), wherein each of the plurality of packets is marked with, or classified as belonging to, a first category type or a second category type; an upstream first in, first out (FIFO) queue that stores the plurality of packets to maintain an order as to when each of the plurality of packets is received from the network; a quota counter configured to maintain a first quota count value, initialized to a first total upstream transmission quota for data stored in the upstream FIFO queue marked with, or classified according to, the first category type, and a second quota count value, initialized to a second total upstream transmission quota for data stored in the upstream FIFO queue marked with, or classified according to, the second category type; and a PON controller configured to remove a queued packet from a head of the upstream FIFO queue, corresponding to one of the plurality of packets, and discard the queued packet if; the queued packet is marked with, or classified as belonging to, the second category type; and an amount of data of the queued packet exceeds the second quota count value; and the first quota count value is greater than zero.