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Topic: Scatternet

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Bluetooth

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	United States Patent Application: 0040153520
		Data packets sent from the LAN to the scatternet are filtered at the NAP to eliminate unnecessary data packets from being sent to the scatternet.
		Scatternets 810 and 812 may be connected to the LANs 802, 802a and 804 to thereby extend the scope of the LANs.
		Scatternet broadcast packets that are not carrying packets from higher layer protocols, such as NAL control packets, however, are allowed to cross AD borders and may therefore still be broadcast in the whole scatternet.
	appft1.uspto.gov /netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&s1="20040153520".PGNR.&OS=DN/20040153520&RS=DN/20040153520 (20566 words)

	Dipartimento di Informatica - Seminari (Site not responding. Last check: 2007-10-12)
		The protocol is executed at each node with no prior knowledge of the network topology, thus being fully distributed; the selection of the Bluetooth masters is driven by the suitability of a node to be the ``best fit'' for serving as a master.
		The generated topology (the scatternet) is a connected mesh with multiple paths between any pair of nodes, thus achieving robustness.
		Also, differently from existing protocols, the proposed solution does not assume any designated device to start the scatternet formation process, and it is multihop in the precise sense that there is no requirement for each node to be in the transmission range of all the other nodes.
	www.di.unipi.it /ricerca/seminari/sommario.php?d=1021897859 (327 words)

	Message Routing Over a (Bluetooth) Scatternet - Ron Alterovitz
		The scatternet routing and planner/controller layers should not be dependent on the specific hardware or software used to transmit messages.
		The "Scatternet Routing" algorithm is implemented in snet_comm.c and uses the pnet_comm interface to transmit messages across hops.
		For ease of future development, the piconet simulator and the scatternet routing protocols are compiled as libraries.
	www.cs.caltech.edu /~rona/cs134c/final (2382 words)

	What is scatternet? - A Word Definition From the Webopedia Computer Dictionary (Site not responding. Last check: 2007-10-12)
		A group of independent and non-synchronized piconets that share at least one common Bluetooth device.
		Bluetooth devices must have point-to-multipoint capability to engage in scatternet communication.
		There may be a maximum of 10 fully loaded piconets in a scatternet.
	www.webopedia.com /TERM/S/scatternet.html (64 words)

	OhioLINK ETD: DHARIA, SAGAR
		Scatternet can be formed by interconnecting several piconets, the shared device between two piconets being known as a bridge.
		We focus on optimum role assignment in the scatternet so that resource-constrained devices do not assume the role of a master and/or a bridge.
		We have done extensive simulations that show that the number of messages transmitted by low resource-weighted devices to be significantly lesser than the number of messages exchanged by high resource-weighted devices, and the number of master/slave bridges is remarkably less as compared to the number of slave/slave bridges.
	www.ohiolink.edu /etd/view.cgi?ucin1069438096 (369 words)

	[No title] (Site not responding. Last check: 2007-10-12)
		The scatternet ID may be stored in the piconet information database of the piconets of the scatternet.
		A slave node may have the scatternet identity in the NAP and carry the LAP of its master node in the class of device field.
		If traffic scatternet links have not been established ("No" path out of decision step 1366), or if the traffic scatternet links have been torn down (step 1369) then the MCS path is used to transport the user data traffic (step 1372).
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=01/97448.011220&ELEMENT_SET=DECL (17272 words)

	Stefano Basagni, Publications
		The generated scatternet is a connected mesh with multiple paths between any pair of nodes, thus achieving robustness.
		Although the time for scatternet formation and the route lengths are longer than in BlueStars, with the combined solution we obtain an overall good protocol performance and scatternets with desired characteristics.
		Differently from existing protocols, the proposed solution does not assume any designated device to start the scatternet formation process, and it is multihop in the precise sense that there is no requirement for each node to be in the transmission range of all the other nodes (one-hop networks).
	www.ece.neu.edu /faculty/basagni/publications.html (7719 words)

	Comments on Ericsson Review paper on ad-hoc networking
		The polling algorithm assesses the capacity need of the units in the scatternet and ensures that capacity is shared fairly, or according to a weighted capacity-sharing policy.
		A scatternet that provides broadcast segment-like connectivity would enable these protocols to work for Bluetooth-based IP hosts that are separated by multiple hops.
		all devices in a single piconet, or a scatternet appear to be connected to the same broadcast segment as seen from the IP level.
	www.isoc.org /isoc/conferences/inet/01/CD_proceedings/T59/INET_Bluetooth2col.htm (5852 words)

	OhioLINK ETD: DUGGIRALA, RANGANATH
		Research in Bluetooth today is largely based on scatternet models and includes optimal algorithms for scatternet formation, scheduling and traffic engineering.
		The bridges are the most important part of the scatternet as they bear the responsibility of a switch – relaying traffic from one piconet to another.
		In this Thesis, we try to enhance the lifetime of the scatternet by simply improving the lifetime of the bridge, and extend the lifetime of the bridge by making a fair distribution of the role of being a bridge among different devices in the piconet.
	www.ohiolink.edu /etd/view.cgi?ucin1076334358 (379 words)

	A Bluetooth Scatternet Formation Algorithm - Law, Siu (ResearchIndex)
		The constraints and properties of Bluetooth scatternets present special challenges in forming an ad hoc network e#ciently.
		In this paper, we present and analyse a new randomized distributed algorithm for Bluetooth scatternet formation.
		We show that, 1) in the scatternet formed by our algorithm, any device is a member of...
	citeseer.ist.psu.edu /law01bluetooth.html (436 words)

	Number of Masters in a Scatternet
		Each piconet in the scatternet will have a unique hopping sequence based on the Masters BD_ADDR and clock, over all the channels.
		If the scatternet is widely spaced apart, most piconets will not have the possibility of interfering with each other.
		Also the access code preceding each packet will allow the devices to know what packet is from which piconet.
	www.palowireless.com /infotooth/knowbase/baseband/26.asp (140 words)

	TTPCom > News (Site not responding. Last check: 2007-10-12)
		In the Bluetooth specification, scatternet is defined as the linking together of multiple asynchronous piconets to create a larger adhoc network.
		Scatternet offers very real potential to advance Bluetooth from a cheap cable replacement technology to a genuine adhoc network.
		A new device then connects to the master in the usual way and a scatternet is formed, but now the master/slave device is transferring data in both piconets.
	www.ttpcom.com /news/Press_2000/pr_00_bluetooth_first.php (568 words)

	Bluetooth Wireless - News (Site not responding. Last check: 2007-10-12)
		For each additional piconet that is part of the scatternet a Bluetooth ComProbe is added at a cost of $500.
		scatternet is $9,995, weighs about 4 ounces (114 grams), and fits in the palm of a hand.
		Scatternets have been discussed for quite some time, but now we actually are talking to customers that are planning on using them soon.
	www.bluetooth.com /news/index.asp?A=2&PID=1046 (757 words)

	Theodoros Salonidis Webpage (Site not responding. Last check: 2007-10-12)
		The problem is investigated for the case of Bluetooth, a new promising TDMA wireless technology that enables the formation of ad hoc networks called scatternets.
		We consider a scatternet that allocates bandwidth to its links using an asynchronous periodic conflict-free TDMA schedule.
		In this setting the asynchronicity overhead is manifested as an increase in the minimum period required to realize a demand allocation when compared to a perfectly synchronized system.
	www-ece.rice.edu /~thsalon/asynchronous.htm (441 words)

	scatternet
		overlap, a scatternet is formed in a seamless, ad-hoc fashion...
		throughout the scatternet or to a single target.
		show a working "scatternet", which is the name given to the...
	www.picosearch.com /cgi-bin/ts.pl?index=72325&opt=EXACT&query=scatternet&psel=bt (304 words)

	Topics by supervisor; Neco Ventura (Site not responding. Last check: 2007-10-12)
		Within a scatternet, two bluetooth devices with their distance larger than their transmission range, but less than their sensing range use different time slots or stay in different piconets without interfering with each other.
		The objective of this project is therefore to create a scatternet using Bluetooth units and implement a routing algorithm to transmit different sizes of packets in the network.
		To make the scatternet structure more suitable to serve in mobile ad hoc networks the project also calls for the evaluation of a routing method in a scatternet along multihop routes with traffic demands.
	web.uct.ac.za /depts/ebecourses/eee458s/2003/NV.html (4454 words)

	Scatternet Formation of Bluetooth Ad Hoc Networks (ResearchIndex)
		Abstract: Scatternet formation must be addressed before any ad hoc network protocol can be run over Bluetooth.
		This is due to the frequency hop nature and piconet unit of Bluetooth.
		28 Performance of a new Bluetooth scatternet formation protocol - Law, Metha et al.
	citeseer.ist.psu.edu /636444.html (361 words)

	Partial Delaunay Triangulation and Localized Bluetooth Scatternet Formation (ResearchIndex) (Site not responding. Last check: 2007-10-12)
		Abstract: This paper addresses the problem of scatternet formation algorithm for multi-hop Bluetooth based personal area and ad hoc network, with minimal communication overhead.
		Nodes are assumed to know their position and are able to establish connections with any of the neighboring nodes.
		It is still a planar graph and is denser than other known planar...
	citeseer.ist.psu.edu /621105.html (629 words)

	Encyclopedia: Bluetooth
		Round-robin is one of the simplest scheduling algorithms for processes in an operating system, which assigns time slices to each process in equal portions and in order, handling all processes as having the same priority.
		Bluetooth specification allows connecting 2 or more piconets together to form a scatternet, with some devices acting as a bridge by simultaneously playing the master role in one piconet and the slave role in another piconet.
		These devices have yet to come, though are supposed to appear within the next 2 years (2007).
	www.nationmaster.com /encyclopedia/Bluetooth (8117 words)

	Adaptive Scatternet Support for Bluetooth using Sniff Mode (Site not responding. Last check: 2007-10-12)
		Therefore, it is desirable to interconnect multiple Bluetooth piconets to form a scatternet.
		Up to now, there is no extensive proposal for scatternet support available.
		In this paper, we present and analyze an adaptive scheme for scatternet scheduling that bases on sniff mode and thus does not require substantial modification of the current Bluetooth specification.
	web.informatik.uni-bonn.de /IV/Mitarbeiter/baatz/lcn01_abstract.html (190 words)

	Title page for etd-0831104-204004 (Site not responding. Last check: 2007-10-12)
		In addition to the scatternet formation problem, two major issues of Bluetooth, scheduling and routing, also greatly interest the researchers.
		The scatternet formation and packet routing method are presented.
		Comparing to the Bluetree scatternet, the proposed scatternet is more reliable and relieves the bottleneck at root nodes.
	etd.lib.nsysu.edu.tw /ETD-db/ETD-search/view_etd?URN=etd-0831104-204004 (175 words)

	PLAZOO News Search (Site not responding. Last check: 2007-10-12)
		Bluetooth "scatternets" are targeting wider geographical area applications in factories, warehouses, shopping malls and various sensor network applications.
		Two methods are introduced to evaluate the performance of the resulting scatternets base on average shortest-path length and maximum traffi...
		Nodes are assumed to know their positions and are able to establish connections with any of their neighboring nodes, located within their transmission radius, in the neighb...
	www.plazoo.com /en/default2.asp?fid=200500 (1021 words)

	An Evolutionary Bluetooth Scatternet Formation Protocol (Site not responding. Last check: 2007-10-12)
		This paper presents and evaluates the performance of a new evolutionary scatternet topology construction protocol for Bluetooth networks.
		A scatternet can be viewed as a Bluetooth ad hoc network that is formed by interconnecting piconets.
		The scatternets formed have the following properties: 1) the scatternets are connected, i.e.
	csdl2.computer.org /persagen/DLAbsToc.jsp?resourcePath=/dl/proceedings/&toc=comp/proceedings/hicss/2004/2056/09/2056toc.xml&DOI=10.1109/HICSS.2004.1265719 (189 words)

	Adaptive Scatternet Support for Bluetooth Using Sniff Mode (Site not responding. Last check: 2007-10-12)
		Therefore, it is desirable to intercon-nect multiple Bluetooth piconets to form a scatternet.
		Up to now, there is no extensive proposal for scatternet sup-port available.
		In this paper, we present and analyze an adaptive scheme for scatternet scheduling that bases on sniff mode and thus does not require substantial modifica-tion of the current Bluetooth specification.
	csdl2.computer.org /persagen/DLAbsToc.jsp?resourcePath=/dl/proceedings/&toc=comp/proceedings/lcn/2001/1321/00/1321toc.xml&DOI=10.1109/LCN.2001.990776 (197 words)

	Bluetooth Topology - Computer Networks
		The Bluetooth topology can best be described as a multiple-piconet structure.
		Since Bluetooth supports, both, point-to-point and point-to-multipoint connections, several piconets can be established and linked together in a topology called a “scatternet,” a group of independent and non-sychronized piconets that share at least one common Bluetooth device.
		There may be no more than 50 fully loaded piconets in a scatternet.
	www.bellaonline.com /ArticlesP/art24485.asp (408 words)

	Title page for etd-0112105-093644
		Even whose MAC protocol is designed for facilitating the construction of ad hoc networks, the issue of scatternet formation is left open in the Bluetooth Specification.
		It dynamically adjusts the scatternet to minimize the number of piconets.
		The simulation result demonstrates that ASFS achieves better results than TSF (Tree Scatternet Formation, the algorithm is proposed by Tan et al.[17] and works well in dynamic environment) in packet transmission time and number of the piconets.
	etd.lib.nsysu.edu.tw /ETD-db/ETD-search/view_etd?URN=etd-0112105-093644 (294 words)

	[No title]
		Piconets combined to form a Scatternet Courtesy of IEEE Network As you can see by Figure 1., the network can become quite large and is inter-connected by a single node that overlaps into two different piconets and thus forms a scatternet.
		If a scatternet is connected to the Internet then there needs to be a means of sending packets through the scatternet and have them routed to the node connected to the internet.
		A scatternet that is connected via a node basically divides its time between the piconets.
	www.eas.asu.edu /~trace/eee459_sp02/doc/horner.doc (2210 words)

	[No title] (Site not responding. Last check: 2007-10-12)
		González-Valenzuela, S., Vuong S.T., and Leung V.C.M., "Mobile Agents for the Dynamic Formation of Bluetooth Scatternets." In Proceedings of the 5th International Workshop MATA'03, Marraquesh, Morocco, October 2003.
		Performance of a new Bluetooth scatternet formation protocol - Law, Mehta et al.
		Bluenet -- a new scatternet formation scheme - Wang, Thomas et al.
	www.cs.ubc.ca /~satyajit/webpage/research/references.html (1285 words)

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