• Publications
  • Influence
A case for end system multicast
TLDR
The potential benefits of transferring multicast functionality from end systems to routers significantly outweigh the performance penalty incurred and the results indicate that the performance penalties are low both from the application and the network perspectives.
Predicting Internet network distance with coordinates-based approaches
  • T. Ng, Hui Zhang
  • Computer Science
    Proceedings.Twenty-First Annual Joint Conference…
  • 7 November 2002
TLDR
This work proposes using coordinates-based mechanisms in a peer-to-peer architecture to predict Internet network distance (i.e. round-trip propagation and transmission delay), and proposes the GNP approach, based on absolute coordinates computed from modeling the Internet as a geometric space.
Improving Fairness, Efficiency, and Stability in HTTP-Based Adaptive Video Streaming With Festive
TLDR
A principled understanding of bit-rate adaptation is presented and a suite of techniques that can systematically guide the tradeoffs between stability, fairness, and efficiency are developed, which lead to a general framework for robust video adaptation.
WF/sup 2/Q: worst-case fair weighted fair queueing
TLDR
It has been proven that the delay bound provided by WFQ is within one packet transmission time of that provided by GPS, and a new packet approximation algorithm of GPS called worst-case fair weighted fair queueing (WF/sup 2/Q) is proposed.
Understanding the impact of video quality on user engagement
TLDR
This paper uses a unique dataset that spans different content types, including short video on demand, long VoD, and live content from popular video con- tent providers, to measure quality metrics such as the join time, buffering ratio, average bitrate, rendering quality, and rate of buffering events.
Service disciplines for guaranteed performance service in packet-switching networks
  • Hui Zhang
  • Computer Science, Business
    Proc. IEEE
  • 1 October 1995
TLDR
Several service disciplines that are proposed in the literature to provide per-connection end-to-end performance guarantees in packet-switching networks are surveyed and a general framework for studying and comparing these disciplines is presented.
Providing guaranteed services without per flow management
TLDR
The key technique is called Dynamic Packet State (DPS), which provides a lightweight and robust mechanism for routers to coordinate actions and implement distributed algorithms and an implementation of the proposed algorithms that has minimum incompatibility with IPv4.
Core-stateless fair queueing: achieving approximately fair bandwidth allocations in high speed networks
TLDR
An architecture that significantly reduces this implementation complexity yet still achieves approximately fair bandwidth allocations is proposed, called Core-Stateless Fair Queueing, which is applied to an island of routers.
Packet fair queueing algorithms for wireless networks with location-dependent errors
  • T. Ng, I. Stoica, Hui Zhang
  • Computer Science, Business
    Proceedings. IEEE INFOCOM '98, the Conference on…
  • 29 March 1998
TLDR
This work identifies a set of properties, called channel-condition independent fair (CIF), that a packet fair queueing algorithm should have in a wireless environment and derives a novel algorithm based on start-timeFair queueing, called CIF-Q, that achieves all the above properties.
Core-stateless fair queueing: a scalable architecture to approximate fair bandwidth allocations in high-speed networks
TLDR
This paper proposes an architecture that significantly reduces this implementation complexity yet still achieves approximately fair bandwidth allocations, called Core-Stateless Fair Queueing, and presents simulations and analysis on the performance.
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