Research and Test Topics

[Charles Norona]

Allan and I met and realized that there are topics which we need to
research or test out for ourselves.

Research To-Do List:

1. Speed of 802.11x wifi transmissions.
2. Sampling redundancy Checks for packets.
3. Networking protocols within Java libraries.
4. AdHoc-ing the Android phones.
5. Firmware customization on the Android Dev Phone 1s.

Testing To-Do List:

1. Signal strength of mobile devices and laptop.
2. Power consumption.

[allan pinero]

currently no java api that allows ad hoc , but there is a way using
applescript.
http://jcp.org/en/jsr/detail?id=259
http://forums.sun.com/thread.jspa?threadID=5405601

[Charles Norona]

Question:
What is Ad-Hoc Mode in Wireless Networking?

Answer:
On wireless computer networks, ad-hoc mode is a method for wireless
devices to directly communicate with each other. Operating in ad-hoc
mode allows all wireless devices within range of each other to
discover and communicate in peer-to-peer fashion without involving
central access points (including those built in to broadband wireless
routers).

To set up an ad-hoc wireless network, each wireless adapter must be
configured for ad-hoc mode versus the alternative infrastructure mode.
In addition, all wireless adapters on the ad-hoc network must use the
same SSID and the same channel number.

An ad-hoc network tends to feature a small group of devices all in
very close proximity to each other. Performance suffers as the number
of devices grows, and a large ad-hoc network quickly becomes difficult
to manage. Ad-hoc networks cannot bridge to wired LANs or to the
Internet without installing a special-purpose gateway.

Ad hoc networks make sense when needing to build a small, all-wireless
LAN quickly and spend the minimum amount of money on equipment. Ad hoc
networks also work well as a temporary fallback mechanism if normally-
available infrastructure mode gear (access points or routers) stop
functioning.

[Charles Norona]

Excerpt from http://en.wikipedia.org/wiki/List_of_ad-hoc_routing_protocols

An ad hoc routing protocol is a convention, or standard, that controls
how nodes decide which way to route packets between computing devices
in a mobile ad-hoc network .

In ad hoc networks, nodes do not start out familiar with the topology
of their networks; instead, they have to discover it. The basic idea
is that a new node may announce its presence and should listen for
announcements broadcast by its neighbours. Each node learns about
nodes nearby and how to reach them, and may announce that it, too, can
reach them.

Note that in a wider sense, ad-hoc protocol can also be used
literally, that is, to mean an improvised and often impromptu protocol
established for a specific purpose.

The following is a list of some ad-hoc network routing protocols.

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[Charles Norona]

Found a site where they have open source project about Ad Hoc multihop
networking:

What is AWDS about?
AWDS (Ad-hoc Wireless Distribution Service) is a Layer 2 routing
protocol for wireless mesh networks. It provides transparent Ethernet-
like access to all participating nodes, thus easily allowing the
employment of different higher level protocols like IP (with DHCP),
IPv6, AppleTalk, ...
A Linux implementation of AWDS can be downloaded from our download
section. Ports to other platforms are highly appreciated!
AWDS is a development effort at the Real-Time Systems and
Communication working group of the Otto-von-Guericke University,
Magdeburg.

On Jan 2, 11:57 am, Charles Norona <cnoro...@gmail.com> wrote:
> Excerpt fromhttp://en.wikipedia.org/wiki/List_of_ad-hoc_routing_protocols

> > > applescript.http://jcp.org/en/jsr/detail?id=259http://forums.sun.com/thread.jspa?...Hide quoted text -
>
> > - Show quoted text -- Hide quoted text -

[Charles Norona]

Forgot the URL: http://awds.berlios.de/

> > > > applescript.http://jcp.org/en/jsr/detail?id=259http://forums.sun.com/thread.jspa?...quoted text -

[Charles Norona]

Found an interesting paper where some guys from New Jersey implemented
what is called SpatialView which seems to keep track of locations of
nodes. At least, that is my first impression. I have to read it in
further detail and find out more. The pdf is added to the "Files"
section at
http://engineering-design-ii-group-6-spring-2010.googlegroups.com/web/ProgrammingAd-hocNetworks.pdf?gda=b4vmSlAAAAAwTyAxwHLHtIuBlBn-zYvOZSYmWTZoMoAXCMFPNI2QnfvDSzBtB83x5bUOoaaSnZF8cEAFBwhPRI7FGTrpRz8ibcVT3VtYGKLco-_l-8AzjQ&hl=en&gsc=cA-7jBYAAABFu_uOENdRwqtPG8B63eTGQBByzFxxjldLK3mjhZ6UWw

> > > > > applescript.http://jcp.org/en/jsr/detail?id=259http://forums.sun.com/thread.jspa?...text -