Utility-maximization framework for dynamic adaptive video streaming over hypertext transfer protocol in multiuser-multiple input multiple output long-term evolution networks

摘要

A method for scheduling user equipment (UE) devices comprising sorting the plurality of UE devices based on a weight of priority associated with each of the UE devices with respect to a plurality of subbands, and assigning one or more of the UE devices to each of the subbands using the weight of priority associated with the UE devices, wherein the weight of priority is based on one or more network utility functions associated with the UE devices. A computer program product comprising computer executable instructions to receive a media content segment using a dynamic adaptive video streaming over hypertext transfer protocol (HTTP) (DASH) protocol, monitor a playback buffer size of a UE device, monitor a battery energy level of the UE device, and adjust a representation quality level in a segment request based on the target requested video rate, the playback buffer size and the battery energy level.

主权项

1. A method for scheduling user equipment (UE) devices, the method comprising:
receiving a request for a video service from one or more of the UE devices using a wireless network connection; establishing a hypertext transfer protocol (HTTP) connection with the UE devices; implementing a dynamic adaptive video streaming over HTTP (DASH) protocol to send a plurality of media content segments in response to the video service request; and scheduling the UE devices to receive the plurality of media content segments based on a weight of priority associated with each of the UE devices with respect to a plurality of subbands, wherein the scheduling comprises;
sorting the one or more UE devices based on the weight of priority associated with each of the UE devices with respect to the plurality of subbands; andassigning the one or more of the UE devices to each of the subbands using the weight of priority associated with the UE devices,wherein the weight of priority is based on one or more network utility functions associated with the UE devices, wherein the weight of priority is determined from the followingλk,s⁡(t)=rk,s⁡(t)W⁢Ur′⁡(r_k)-Cq′⁡(qk⁡(t))⁢rk,s⁡(t)⁢Dtsf⁡(t)+ek⁢Dt·Cb′⁡(bk⁡(t))⁢rk,s⁡(t),wherein λk,s(t) is a weight of priority of UE k on subband s at a t-th time transmission interval (TTI), rk,s(t) is a supportable data rate of UE k on subband s, W is a constant time window, U′r(rk) is a gradient for a function Ur at UE k in terms of average video rate, C′q(qk(t)) is a gradient for a function Cq at UE k in terms of playback buffer, Dt is a duration of TTI, sf(t) is a size of a current video frame in transition, ek is a power consumption for receiving a unit throughput, and C′b(bk(t)) is a gradient for a function Cb at UE k in terms of battery energy.