Hema Kumar Yarnagula

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With the widespread use of dynamic adaptive streaming over HTTP (DASH) for online video streaming, ensuring the user's quality of experience (QoE) is of importance to both service and network providers to improve their revenue. DASH aims to adapt the bitrate based on the available bandwidth, while minimizing the number of playback interruptions. This is(More)
Cognitive Radio (CR) seems to be a promising solution to radio spectrum overcrowding problem. Cognitive Radio Network (CRN) allows opportunistic uses of spectrum holes by enabling the coexistence of licensed (primary) users and unlicensed (secondary) users. Data dissemination in a CRN is very useful to propagate non-urgent messages in order to limit cost(More)
HTTP based adaptive streaming technologies have become the primary vehicle for delivering live video content on the Internet. The WebRTC stack has opened up the possibility of creating a purely browser based and plugin free mechanism of utilizing peer to peer upload bandwidth to assist HTTP based streaming systems and hence make them easier to scale.(More)
Judicious usage of battery during video streaming on mobile devices is crucial for its longer operational lifetime. In this paper, we conduct experiments to measure the energy footprint of popular dynamic adaptive streaming over HTTP (DASH) rate adaptation algorithms implemented on a mobile device. We analyzed the inherent trade-offs between energy(More)
Dynamic adaptive streaming over HTTP (DASH) is gaining popularity for video streaming over the Internet. DASH uses a rate adaptation algorithm to adapt the bitrate played continuously based on the network conditions. Most of the algorithms use buffer occupancy, throughput, or a combination thereof to adapt the bitrate. In the literature, the Quality of(More)
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