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Design Space Exploration of Wireless Multihop Networks
Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS).
2005 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis explores the feasible design space of wireless multihop networks and identifies fundamental design parameters. In the process of exploring it is important to ignore all details and instead take a holistic view. This means that all protocol details are overseen, all details of radio wave propagation models are overseen and the system is modelled strictly on an architectural level. From a theoretical information perspective, there is a limit to the capacity that a certain bandwidth and a certain signal-to-noise ratio at the receiver can provide. This limit is approximated as a volume in the time-frequency-space domain. A single transmission is represented as an occupied volume in this domain. A wireless multihop network covers a spatial area, and the question is how multiple numbers of transmission volumes can be fit into a given limited spatial area. This volume fitting should be done in order to maximize the overall performance or to trade available resources to favour a specific characteristic in the wireless multihop network. The volume model is used for the design space exploration of a wireless multihop network. It is argued that the fault tolerance and the energy gain achieved in a multihop topology are its strength as compared to a single-hop architecture. It is further shown that the energy gain is achieved at the expense of delay and a greater end-to-end error probability. This indicates that these parameters must be very carefully balanced in order to gain in the global overall performance perspective. It can further be concluded that the overall spatial capacity is increased as a result of the spatial channel reuse in a multihop topology. On the other hand, it is also shown that the multihop topology introduces a rather stringent geometrical capacity limitation when the number of nodes of a wireless multihop network is increased. The dynamics (e.g. node mobility, changing radio channels etc.) of a large scale wireless multihop network is also a limiting factor. The nodes’ mobility creates a knowledge horizon beyond which very little can be known about the present network topology.

Place, publisher, year, edition, pages
Göteborg: Chalmers tekniska högskola , 2005. , p. 46
Series
Technical report L, ISSN 1652-876X ; 6
Keywords [en]
Wireless multihop networks, wireless sensor networks, Ad hoc networks, Design space, Wireless embedded networks, Packet radio networks
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:hh:diva-379Libris ID: 9884541Local ID: 2082/703OAI: oai:DiVA.org:hh-379DiVA, id: diva2:237558
Presentation
2005-06-07, Wigforssalen, Kristian IV:s väg, Halmstad, 13:44 (English)
Supervisors
Available from: 2007-01-11 Created: 2007-01-11 Last updated: 2018-03-23Bibliographically approved
List of papers
1. Capacity limitations in wireless sensor networks
Open this publication in new window or tab >>Capacity limitations in wireless sensor networks
2003 (English)In: ETFA 2003: 2003 IEEE Conference on Emerging Technologies and Factory Automation, September 16-19, 2003, Lisbon, Portugal : proceedings, Piscataway, N.J.: IEEE , 2003, p. 529-536, article id 1247752Conference paper, Published paper (Refereed)
Abstract [en]

It is expected that wireless sensor network will be used in home automation and industrial manufacturing in the future. The main driving forces for wireless sensor networks are fault tolerance, energy gain and spatial capacity gain. Unfortunately, an often forgotten issue is the capacity limits that the network topology of a wireless sensor network represents. In this paper we identify gains, losses and limitations in a wireless sensor network, using a simplified theoretical network model. Especially, we want to point out the stringent capacity limitations that this simplified network model provide. Where a comparison between the locality of the performed information exchange and the average capacity available for each node is the main contribution.

Place, publisher, year, edition, pages
Piscataway, N.J.: IEEE, 2003
Keywords
Channel capacity, Fault tolerance, Network topology, Wireless sensor networks
National Category
Communication Systems
Identifiers
urn:nbn:se:hh:diva-397 (URN)10.1109/ETFA.2003.1247752 (DOI)000189406100072 ()2-s2.0-84938692441 (Scopus ID)2082/721 (Local ID)0-7803-7937-3 (ISBN)2082/721 (Archive number)2082/721 (OAI)
Conference
IEEE Conference on Emerging Technologies and Factory Automation, September 16-19, 2003, Lisbon, Portugal
Note

©2003 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

Available from: 2007-01-12 Created: 2007-01-12 Last updated: 2018-03-23Bibliographically approved
2. An architecture comparison between a wireless sensor network and an active RFID system
Open this publication in new window or tab >>An architecture comparison between a wireless sensor network and an active RFID system
2004 (English)In: The 29th Annual IEEE International Conference on Local Computer Networks, 2004, IEEE , 2004, p. 583-584Conference paper, Published paper (Refereed)
Abstract [en]

In This work a new hardware platform for active RFID and wireless sensor network is presented. Furthermore a comparison of these two architectures is performed, i.e., the singlehop and the multihop architecture. The comparison reveals important issues regarding the utilization and energy consumption for the singlehop as well as for the multihop architecture.

Place, publisher, year, edition, pages
IEEE, 2004
Series
Conference on Local Computer Networks, ISSN 0742-1303 ; 29
Keywords
power consumption, transceivers, wireless sensor networks
National Category
Engineering and Technology
Identifiers
urn:nbn:se:hh:diva-966 (URN)10.1109/LCN.2004.17 (DOI)000225596600094 ()2-s2.0-20544464591 (Scopus ID)2082/1327 (Local ID)0-7695-2260-2 (ISBN)2082/1327 (Archive number)2082/1327 (OAI)
Note
©2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.Available from: 2007-10-03 Created: 2007-10-03 Last updated: 2018-03-23Bibliographically approved
3. A comparison of spatial energy consumption distribution for single- and mulihop wireless network architectures
Open this publication in new window or tab >>A comparison of spatial energy consumption distribution for single- and mulihop wireless network architectures
2004 (English)Conference paper, Poster (with or without abstract) (Refereed)
National Category
Communication Systems
Identifiers
urn:nbn:se:hh:diva-19533 (URN)
Conference
2nd Swedish National Computer Networking Workshop, SNCNW 2004, Karlstad, Sweden, 23-24 november 2004
Available from: 2012-09-08 Created: 2012-09-08 Last updated: 2018-03-22Bibliographically approved
4. Knowledge Horizon - Dynamic limitations in a wireless ad hoc network
Open this publication in new window or tab >>Knowledge Horizon - Dynamic limitations in a wireless ad hoc network
2003 (English)In: SNCNW 2003 Swedish National Computer Networking Workshop 2003 on-line proceedings, 2003, p. 1-3Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we investigate the impact of node mobility in a wireless ad hoc network (WAHN). Especially we investigate the possibility to provide guaranteed services in a WAHN, i.e., the network topology predictability. We combine link expiration time (LET) estimation with information propagation speed (IPS) in a time-space diagram and as result an operation area is revealed. The result gives that a WAHN, where the nodes are mobile, has a knowledge horizon (KH), the distance of which is dependent on the mobility of the nodes. Beyond the KH, knowledge about the network state is impossible to achieve. Thus, we can not predict long distance network topology state when the node mobility is high.

National Category
Communication Systems
Identifiers
urn:nbn:se:hh:diva-19534 (URN)
Conference
1st Swedish National Computer Networking Workshop, SNCNW 2003, Stockholm, Sweden, 8-10 September 2003
Available from: 2012-09-08 Created: 2012-09-08 Last updated: 2018-03-22Bibliographically approved

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