Visiting Lecturer – Dr Bo Han – 5th October 2015

Dr. Bo Han is a Senior Inventive Scientist at AT&T Labs Research. He received his Ph.D. degree from the University of Maryland, his M.Phil. degree from the City University of Hong Kong, and his Bachelor’s degree from Tsinghua University, all in Computer Science. Dr. Han’s research interests focus on developing simple yet efficient and elegant solutions for real-world networking and systems problems in the areas of wireless networking, mobile computing, software defined networking, network functions virtualization, etc. He has published a number of research papers in prestigious international journals and conference proceedings. Dr. Han has served on technical program committees for top-notch conferences in networking and communications.

Dr. Han will visiting CSDM for one week, during this time he will deliver 3 talks in RGU to introduce his research and some current research topics in the AT&T research labs.

Lecture 1: MetaPush: Cellular-Friendly Server Push For HTTP/2 (N204 SIWB, Tuesday 6th October, 4-5pm)

MetaPush is a novel server push framework aiming at reducing web page load time. The key idea is to strategically leverage Server Push, a built-in feature in HTTP/2, to preemptively push web pages’ metadata, which can later be leveraged by the client to early-fetch critical resources. We demonstrate MetaPush is particularly suitable for cellular networks, providing negligible bandwidth overhead (around 0.4%), improved page load time (up to 45%), and reduced radio energy utilization (up to 37%) over HSPA+ networks.

Lecture 2: (N107 SIWB, Thursday 8th, October 10-11)

An Anatomy of Mobile Web Performance over Multipath TCP Leveraging multiple interfaces (e.g., WiFi and cellular) on mobile devices is known to provide performance boost for applications such as bulk data transfer. In this paper, we complement prior studies by conducting, to the best of our knowledge, the first measurement study of mobile web performance over multipath TCP (MPTCP). Based on experiments using real web pages under diverse settings, we found the upper-layer web protocols can incur complex and sometimes unexpected interactions with the multipath-enabled transport layer. MPTCP always boosts SPDY while may hurt HTTP. It also helps mitigate SPDY’s key limitations of being vulnerable to losses and inefficient bandwidth utilization. We provide in-depth explanations of the root causes, as well as recommendations for improving mobile web performance over MPTCP.

Open Seminar Talk (441C ABS, Thursday 8th October 3-4pm)
Title: Recent Advances in Network Functions Virtualization

Abstract: Network Functions Virtualization (NFV) was recently proposed to improve the flexibility of network service provisioning and reduce the time to market of new services. By leveraging virtualization technologies and commercial off-the-shelf programmable hardware, NFV decouples the software implementation of network functions from the underlying hardware. This talk will start with a brief overview of NFV, including its requirements and architectural framework. It will then present a few use cases of NFV, summarize its research challenges and provide several future research directions. This talk will end with a description of EdgePlex, a flexible and reliable provider edge platform that decomposes and virtualizes the functions performed by a traditional edge router.