Coexistence of Push Wireless Access with Pull Communication for Content-based Wake-up Radios

TL;DR

This paper introduces CoWu, a content-based wake-up mechanism enabling coexistence of pull and push communication models in IoT, significantly improving energy efficiency and resource management.

Contribution

The paper proposes a novel content-based wake-up approach that allows selective activation of pull-based nodes, enhancing coexistence with push-based communication in IoT networks.

Findings

CoWu achieves up to 38% energy savings in IoT devices.

It effectively manages communication requirements for both pull and push nodes.

Numerical results validate the efficiency of the proposed method.

Abstract

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.