Coexistence of Push Wireless Access with Pull Communication for Content-based Wake-up Radios
This work addresses energy efficiency for IoT devices in mixed communication environments, representing an incremental improvement with a specific resource allocation focus.
The paper tackles the problem of energy-efficient connectivity for IoT devices in coexistence scenarios between pull- and push-based communication models by introducing content-based wake-up (CoWu) to remotely activate only relevant pull-based nodes. Numerical results show that CoWu achieves up to 38% higher energy efficiency compared to a baseline scheduling method.
This paper considers energy-efficient connectivity for Internet of Things (IoT) devices in a coexistence scenario between two distinctive communication models: pull- and push-based. In pull-based, the base station (BS) decides when to retrieve a specific type of data from the IoT devices, while in push-based, the IoT device decides when and which data to transmit. To this end, this paper advocates introducing the content-based wake-up (CoWu), which enables the BS to remotely activate only a subset of pull-based nodes equipped with wake-up receivers, observing the relevant data. In this setup, a BS pulls data with CoWu at a specific time instance to fulfill its tasks while collecting data from the nodes operating with a push-based communication model. The resource allocation plays an important role: longer data collection duration for pull-based nodes can lead to high retrieval accuracy while decreasing the probability of data transmission success for push-based nodes, and vice versa. Numerical results show that CoWu can manage communication requirements for both pull-based and push-based nodes while realizing the high energy efficiency (up to 38%) of IoT devices, compared to the baseline scheduling method.