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SwissQM is a stack-based Virtual Machine for wireless sensor networks. It was
created at the Department of Computer Science at ETH Zurich. SwissQM is an
acronym for Scalable Wireless Sensor Query Machine.



SwissQM defines a bytecode instruction set that is independent of sensor
platforms and application languages. Traditionally, sensor networks are
programmed using low-level languages such as nesC on systems such as TinyOS.
This is, in general, difficult because the programmer needs to take care of many
low-level details, that even vary between different platforms.
Creating bytecode rather than nesC code increases the abstraction level of
programming sensor networks. In combination with a gateway system that accepts
programs and queries written in a high-level language and translates them into
bytecode, programming of sensor networks can further be simplified.
SwissQM is a flexible platform for programming sensor networks and data
acquisition tasks. SwissQM allows:

 * Event-processing at the sensors nodes
 * Implementation of data-cleaning pipelines
 * Finite state automata at the sensor nodes
 * Pushing down complex processing functionality all the way to the sensor nodes
 * User-defined functions
 * Turing-complete programming model
 * Programming sensors networks using different high-level language front-ends


SENSOR NODE PLATFORMS

 * Xbow Mica2 (no longer actively maintained)
 * Moteiv tmote sky


SWISSQM VERSION 2.0.0 DOWNLOAD (JUNE 2ND 2008)

Changes


 * SwissQM Virtual Machine
   * Implementation on top of TinyOS 2.0.2
   * Tuple combining for non-aggregation queries
   * Lazy tuple forwarding using tuple deadlines
   * Result propagation through CTP Tree Collection Protocol
   * Optional: fixed Tree Implementation for testing
   * Based on a modular global time synchronization protocol, decoupled from
     result messaging layer
 * SwissQM Gateway
   * Reimplementation into modular OSGi components and services. This makes the
     system extensible and perfectly suitable to be used as a research platform.
   * Query compiler for CSQL and XQuery
   * User-defined function (UDF) parser for C language subset
   * Query optimizer infrastructure (extensible)
   * R-OSGi remoting of services
   * Different interface adapters to gateway: R-OSGi, Web services and Java API
   * Tuple Sink mechanism detaches tuple receivers from queries. Multiple sinks
     can subscribe to a query result stream.
   * SwissQM control user interface as Eclipse plug-in allows submission of
     Queries, UDFs and registration of tuple sinks

Download
Available for download are the SwissQM virtual machine running on the sensor
nodes and a gateway software for using SwissQM without having to program in
bytecode.

 * SwissQM Virtual Machine (nesC, TinyOS 2.x) Version 2.0.2. Note: Due to a bug
   in the msp430-gcc SwissQM cannot be compiled with the default compiler from
   TinyOS. This compiler will cause a segfault. Apply this patch and rebuild the
   compiler. For details see the installation guide.
 * SwissQM OSGi Gateway Version 2.0.0. Consists of SwissQM core, CSQL and XQuery
   parser, UDF parser and bytecode generator and Eclipse plug-in. Note: the
   installation of the Gateway uses R-OSGi and Maven as a build tool. Setting up
   the Eclipse plug-in with its dependencies is a bit intricate. For detailed
   instructions see the installation guide.
 * Ubuntu Linux VMware image with fully installed SwissQM environment (big!, 1.2
   GB compressed, 3.7 GB uncompressed) Contains: TinyOS 2.0.2-2 with patched
   msp430-gcc, SUN JDK 1.5, Eclipse 3.3.2, Maven 2.0.9, and run configuration
   for SwissQM Eclipse plug-in. This VMware image can be run by the free VMware
   Player. The image is identical to the installation obtained when following
   the installation guide. The VMware image is despite its size most likely the
   easiest and fastest way to get started with SwissQM. Note: the name of the
   user set up is swissqm (Password: swissqm).
 * Documentation for SwissQM 2.0.0
   * Installation guide for Ubuntu Linux


SWISSQM VERSION 1.0 DOWNLOAD

 * SwissQM Virtual Machine (nesC, TinyOS 1.x) Version 1.0rc2
 * SwissQM Gateway (Java) Version 1.0rc1
   The gateway application consists of two graphical tools:
   (1) Query GUI that allows submitting of queries (similar to TinyDB). The
   submitted queries are compiled into QM bytecode programs that are then sent
   into the sensor network where they are executed by the SwissQM Virtual
   Machine.
   (2) Bytecode Assembly Interface allows sending hand-crafted bytecode programs
   (written in SwissQM bytecode assembly) into the sensor network, thus
   providing full access over SwissQM.
   In both applications results generated in the network are sent back to the
   gateway for visualisation and logging into a database through JDBC. Queries
   can contain complex expressions as well as user-defined functions. These
   function are can written in a C-like language and are compiled into the
   bytecode programs that are generated from the queries.
 * Documentation for SwissQM 1.0
   * Installation and Setup (Version 1.0)
   * Query Interface
   * Bytecode Assembly Interface


PUBLICATIONS

 * René Müller, Gustavo Alonso, Donald Kossmann: A Virtual Machine For Sensor
   Networks
   In Proceedings of EuroSys 2007, Lisbon, Portugal, March 21-23th 2007.
 * René Müller, Gustavo Alonso, Donald Kossmann: SwissQM: Next Generation Data
   Processing in Sensor Networks
   In Proceedings of the 3rd Biennial Conference on Innovative Data Systems
   Research, Asilomar, CA, USA, January 7-10th 2007.
 * René Müller, Gustavo Alonso: Efficient Sharing of Sensor Networks
   In Proceedings of the 3rd IEEE International Conference on Mobile Ad-hoc and
   Sensor Systems 2006, Vancouver, Canada, October 9-12th 2006.
 * René Müller, Gustavo Alonso: Shared Queries in Sensor Networks for Multi-User
   Support
   Technical Report 508, Department of Computer Science, ETH Zurich, February
   2006
   


PRESENTATIONS

 * René Müller, Jan S. Rellermeyer, Michael Duller, Gustavo Alonso: Demo: A
   Generic Platform for Sensor Network Applications
   In Proceedings of the 4th IEEE International Conference on Mobile Ad-hoc and
   Sensor Systems 2007, Pisa, Italy, October 8-11th, 2007. (Best-Demo Award)
 * René Müller, Jan S. Rellermeyer, Michael Duller, Gustavo Alonso, Donald
   Kossmann: Demo: A Dynamic and Flexible Sensor Network Platform
   In Proceedings of SIGMOD 2007, Beijing, China, June 11-14th 2007.
 * René Müller, Michael Duller, Gustavo Alonso, Donald Kossmann: Demo: Bytecode
   and Virtual Machine for Sensor Networks
   In European conference on Wireless Sensor Networks (EWSN 2007), Delft,
   Netherlands, January 29-31st 2007.


PEOPLE

 * René Müller (primary contact)
 * Michael Duller
 * Jan S. Rellermeyer
 * Prof.Dr. G. Alonso
 * Prof.Dr. D. Kossmann

Last update: July 8th, 2008




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