Patent ID: 9386597
Filing Date: 2016-07-05
CPC Classification: H04L,H04W

Claim Text:
1. A method of delivering packets from a radio access network to a user terminal, the method comprising: establishing a radio access bearer for transporting data to the user terminal from a radio layer control entity responsible for constructing downlink radio frames; within the radio access network, observing an IP traffic flow destined for said user terminal, determining a user application to which the IP traffic flow relates based on the observing, and determining a delivery priority for the IP traffic flow responsive to the determining the user application to which the IP traffic flow relates; dynamically adjusting the delivery priority in dependence upon current radio conditions and the desired arrival time or delivery rate of packets within the IP traffic flow at the user terminal; with respect to other downlink user traffic to be sent over the radio interface, scheduling packets of the IP traffic flow in a scheduling queue for transmission to the user terminal over the established radio access bearer, and or adjusting the scheduling weight of radio frames of the established radio access bearer, in accordance with the delivery priority as dynamically adjusted; upstream of said radio layer control entity, carrying out a pre-scheduling of packets of said IP traffic flow with respect to other IP traffic flows, using a pre-scheduling queue, wherein an order with which the packets of the IP traffic flow are delivered from the pre-scheduling queue to the scheduling queue is determined based on the delivery priority as dynamically adjusted; and providing feedback from said radio control layer entity to a pre-scheduler comprising said rescheduling queue to control said prescheduler to maintain a minimum queue size at the pre-scheduler wherein the feedback corresponds to a size of the scheduling queue.