FatVAP: Aggregating AP backhaul capacity to maximize throughput

Srikanth Kandula, Kate Ching Ju Lin, Tural Badirkhanli, Dina Katabi

研究成果: Conference contribution同行評審

104 引文 斯高帕斯(Scopus)

摘要

It is increasingly common that computers in residential and hotspot scenarios see multiple access points (APs). These APs often provide high speed wireless connectivity but access the Internet via independent, relatively low-speed DSL or cable modem links. Ideally, a client would simultaneously use all accessible APs and obtain the sum of their backhaul bandwidth. Past work can connect to multiple APs, but can neither aggregate AP backhaul bandwidth nor can it maintain concurrent TCPs across them. This paper introduces FatVAP, an 802.11 driver that aggregates the bandwidth available at accessible APs and also balances their loads. FatVAP has three key features. First, it chooses the APs that are worth connecting to and connects with each AP just long enough to collect its available bandwidth. Second, it ensures fast switching between APs without losing queued packets, and hence is the only driver that can sustain concurrent high throughput TCP connections across multiple APs. Third, it works with unmodified APs and is transparent to applications and the rest of the network stack. We experiment with FatVAP both in our lab and hotspots and residential deployments. Our results show that, in today's deployments, FatVAP immediately delivers to the end user a median throughput gain of 2.6x, and reduces the median response time by 2.8x.

原文English
主出版物標題5th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2008
發行者USENIX Association
頁面89-103
頁數15
ISBN(電子)9781931971584
出版狀態Published - 4月 2008
事件5th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2008 - San Francisco, United States
持續時間: 16 4月 200818 4月 2008

出版系列

名字5th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2008

Conference

Conference5th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2008
國家/地區United States
城市San Francisco
期間16/04/0818/04/08

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