Abstract-Sensor network applications are generally characterized by long idle durations and intermittent communication patterns. The traffic loads are typically so low that overall the idle duration energy consumption dominates. Low duty cycle MAC protocols are used to reduce the idle duration energy consumption. However, lowering down the duty cycle in favour of energy consumption results in increased latency, which makes it undesirable for many applications. In this paper, we propose Radio Triggered Wake-up with Addressing Capabilities (RTWAC) that allows suppressing the idle duration current consumption. Our solution consists of an external low-cost hardware wakeup circuit attached to the microcontroller of a sensor node. The sensor node stays in the sleep mode with its normal communication radio turned otT. In order to communicate with a sensor node, a special kind of out-or-band modulated wakeup signal is transmitted. The modulated signal contains data that enables to distinguish between ditTerently addressed nodes in order to avoid undesired node wake-ups. Furthermore, we augment this solution to a MAC protocol running on the normal radio on the sensor node in an advantageous way to achieve high energy gains and low latency for data communication.
In REF the authors proposed a radio triggered wake-up with addressing capabilities that allows the non-target nodes to go to sleep mode quickly just after interpreting the ID in the wake-up packet.
Radio-Triggered Wake-ups with Addressing Capabilities for extremely low power sensor network applications
2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications
2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications
Computer Science