Two of the many buzzes in the wireless world are the concept of ad hoc networks and wireless sensory networks.
“In the next generation of wireless communication systems, there will be a need for the rapid deployment of independent mobile users”, writes XiangYang Li of the Illinois Institute of Technology in a new book called: ‘Wireless Ad Hoc and Sensor Networks’.
“Significant examples include establishing survivable, efficient, dynamic communication for emergency rescue operations, disaster relief efforts and military networks”, continues Li, “such networks scenarios cannot rely on centralised and organise connectivity and can be conceived as applications of mobile ad hoc networks (MANETs)”.
Li defines a MANET as: “An autonomous collection of mobile users that communicate over relatively bandwidth-constrained wireless links.”
One of the companies angling to supply ad hoc wireless sensor networks is Sharp of Japan which defines wireless sensor networks as: “Networks of small spatially distributed devices that can communicate with each other over the air.”
Next year, Sharp intends to bring out sensors with integrated Zigbee functionality which will permit the establishment of Wireless Sensor Networks.
“Zigbee-enabled sensors from Sharp are expected in the second half of 2009”, says Sharp’s Uwe Hock, “we’re talking with customers and it’s up to them when they launch it and the first one is due in the second half of 2009.”
Asked why Sharp is focusing on Zigbee rather than other NFC wireless standards, Hock replies: “Because our customers are committing to Zigbee. They have analysed all the standards and decided that Zigbee is really the best.”