6LoWPAN: IPv6 over Low-Power wireless Area Networks
just some quotes for now:
"The Working Group will generate the necessary documents to ensure interoperable implementations of 6LoWPAN networks and will define the necessary security and management protocols and constructs for building 6LoWPAN networks, paying particular attention to protocols already available." source
"The IETF 6LoWPAN working group was formed in 2004 to address the challenge of enabling wireless IPv6 communication over the newly standardized IEEE 802.15.4 low-power radio for devices with limited space, power and memory, such as sensor nodes." source
Interesting things and scenarios:
"Furthermore, home area network applications will not be about limiting and relating objects to specific homes, but rather need to be capable and open to much more complex relationships. For example, if a guest is charging their electric car at a friends house, we should consider applications that will understand that the charge should appear on the guests electric bill and not that of the the friend." source
Example: healthcare at home by tele-assistance
"A senior citizen who lives alone wears one to few wearable LoWPAN Nodes to measure heartbeat, pulse rate, etc. Dozens of LoWPAN Nodes are densely installed at home for movement detection. A LoWPAN ER at home will send the sensed information to a connected healthcare center. Portable base stations with LCDs may be used to check the data at home, as well. The different roles of devices have different duty-cycles, which affect node management.
Multipath interference may often occur due to the patients' mobility at home, where there are many walls and obstacles. Even during sleeping, the change of the body position may affect the radio propagation.
Data is gathered both periodically and event-driven. In this application, event-driven data can be very time-critical. Thus,
real-time and reliable transmission must be guaranteed.
Privacy also becomes an issue in this case, as the sensed data is very personal. In addition, different data will be provided to the hospital system from what is given to a patient's family members. Role-based access control is needed to support such services, thus support of authorization and authentication is important." source
"Because of IP's pervasiveness as a global communication standard across industries, Primer Pack/IP sensor nodes will be able to communicate directly with other IP devices, whether those devices are wired or wireless, local or across the Internet, on Ethernet, WiFi, 6LoWPAN or other types of network, and regardless of vendor. Network managers will gain direct, real-time access to sensor nodes and the ability to apply a broad range of Internet management and security tools, while end users will get applications that accommodate their demands for increased mobility and flexibility." source
Motivation for SIP
"IPv6 is used in particular as it contains a number of optimisations for constrained devices, a category in which most smart objects will find themselves due to their unavoidable processing and memory limitations." Source
Wireless Power, How it works.
Tiny OS, an Operating System for IoT
"TinyOS is the original and probably best well known operating system (OS) for the sensor nodes that make up Wireless Sensor Networks (WSNs). Sun Microsystems has also developed Java based sensors using the Squawk Virtual Machine. However, there is another operating system that we must consider not only for WSNs but also for embedded devices generally and what is sometimes referred to as "The Internet of Things"."
Zach Shelby's book release seminar on Dec 6th at the Centre for Internet Excellence in Oulu, Finland. The seminar gave a good overview of 6LoWPAN.
6LoWPAN Seminar Video (80 minutes, MP4) Recorded 6.12.2009