Common Contracts
1 similar null contracts
Jam-X: Wireless Agreement under InterferenceSeptember 17th, 2020
Wireless low-power transceivers used in sensor networks such as IEEE 802.15.4 typically operate in unlicensed fre- quency bands that are subject to external interference from devices transmitting at much higher power. Communication protocols should therefore be designed to be robust against such interference. A critical building block of many pro- tocols at all layers is agreement on a piece of information among a set of nodes. At the MAC layer, nodes may need to agree on a new time slot or frequency channel; at the ap- plication layer nodes may need to agree on handing over a leader role from one node to another. Message loss caused by interference may break agreement in two different ways: none of the nodes use the new information (time slot, chan- nel, leader) and stick with the previous assignment, or – even worse – some nodes use the new information and some do not. This may lead to reduced performance or failures.
