Sanjit Biswas

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This paper describes ExOR,an integrated routing and MAC protocol that increases the throughput of large unicast transfers in multi-hop wireless networks. ExOR chooses each hop of a packet's route after the transmission for that hop, so that the choice can reflect which intermediate nodes actually received the transmission. This deferred choice gives each(More)
This paper analyzes the causes of packet loss in a 38-node urban multi-hop 802.11b network. The patterns and causes of loss are important in the design of routing and error-correction protocols, as well as in network planning.The paper makes the following observations. The distribution of inter-node loss rates is relatively uniform over the whole range of(More)
This paper evaluates the ability of a wireless mesh architecture to provide high performance Internet access while demanding little deployment planning or operational management. The architecture considered in this paper has unplanned node placement (rather than planned topology), omni-directional antennas (rather than directional links), and multi-hop(More)
This paper describes Extremely Opportunistic Routing (ExOR), a new unicast routing technique for multi-hop wireless networks. ExOR forwards each packet through a sequence of nodes, deferring the choice of each node in the sequence until after the previous node has transmitted the packet on its radio. ExOR then determines which node, of all the nodes that(More)
Meraki is a cloud-based network management system which provides centralized configuration, monitoring, and network troubleshooting tools across hundreds of thousands of sites worldwide. As part of its architecture, the Meraki system has built a database of time-series measurements of wireless link, client, and application behavior for monitoring and(More)
This paper describes the design and performance of Roofnet, an 802.11b mesh network for Internet access. Roofnet consists of more than 40 nodes spread over an eight square kilometer urban area. Its principle design goal is to allow unmanaged deployment and operation, to better support the growth of community networks with open access policies. This goal has(More)
This extended abstract describes our experiences from constructing the MIT Roofnet, an experimental rooftop wireless network. The ultimate goal of Roofnet is to build an ad-hoc network infrastructure capable of providing pervasive highspeed network access. Currently, the network currently consists of more than 35 nodes spread over two square kilometers of(More)
WiFi is widely being researched to use it beyond its original purpose of short-range communication. These kinds of efforts are stimulated due to its mass production and cost-effectiveness. WiFibased Long Distance (WiLD) networks envisage changing the rural communication scenario particularly in the undeveloped nations. However, CSMA/CA, the de-facto MAC(More)
This project studied the mapping of stream processing onto legacy architectures. Cache memories were treated as SRF, into which data were loaded by prefetch instruction. By using cache, we could conveniently index into the SRF, and also blended the usage of the SRF with the scratchpad memory. However, we still liked to have data arranged sequentially or(More)
In 2006, John Bicket and Sanjit Biswas took a leave from their graduate research at MIT to start a networking company called Meraki, which eventually grew to a fast-growing, profitable company acquired by Cisco in 2012 for $1.2 billion. In this talk, Sanjit will recount the history of Meraki, from the Roofnet project at MIT CSAIL, to bootstrapping the(More)