Methods and systems for data transmission

摘要

Example methods and systems for transmitting data are presented. In one example, a plurality of streams of video data are received from at least one data source into at least one buffer of a router via multicast, each of the plurality of streams of video data representing a same video program and having a unique data rate relative to at least some other streams of the plurality of streams. A request is received from a device to transmit video data to the device. In response to the request, video data from one of the plurality of streams of video data is transmitted from the at least one buffer of the router to the device via a point-to-point connection at the data rate corresponding to the one of the plurality of streams of video data.

主权项

1. A method for transmitting data, the method comprising:
receiving a plurality of streams of video data from at least one data source into at least one buffer of a router via multicast, each of the plurality of streams of video data representing a same video program and having a unique data rate relative to at least some other streams of the plurality of streams, wherein each of the plurality of streams of video data comprises a plurality of contiguous, non-overlapping portions of video data; receiving a first request from a device to transmit video data to the device, wherein the first request corresponds to a single portion of video data; in response to the first request, transmitting a first portion of one of the plurality of streams of video data from the at least one buffer of the router to the device via a point-to-point connection at the data rate corresponding to the one of the plurality of streams of video data; receiving a second request from the device to transmit additional video data to the device; determining whether transmission of any of the plurality of streams of video data would not result in a communication delay to the device or another device; reducing the data rate of a second portion of another one of the plurality of streams of video data based on a determination that transmission of none of the plurality of streams of video data would not result in a communication delay; and transmitting, in response to the second request, the reduced-data-rate second portion of the other one of the plurality of streams of video data.