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Device-to-Device-Based Traffic Offloading
Published in Yufeng Wang, Athanasios V. Vasilakos, Qun Jin, Hongbo Zhu, Device-to-Device based Proximity Service, 2017
Yufeng Wang, Athanasios V. Vasilakos, Qun Jin, Hongbo Zhu
First, some promises will be stated before introducing the architecture. The smart mobile terminals (SMTs) are equipped with wireless broadband connectivity and are also able to communicate via Wi-Fi. Both the wireless broadband connectivity and Wi-Fi interface are active. Software is installed on the SMT to subscribe to contents on the content service provider (CSP) and to send files to encountering nodes. The software can get a file through either the wireless broadband connection or the Wi-Fi connection. We suppose that the SMTs are Wi-Fi Direct devices. Wi-Fi Direct devices allow the creation of peer-to-peer connections between Wi-Fi client devices without requiring the presence of a traditional Wi-Fi infrastructure network (i.e., AP or router).
Vehicular Clouds Based on GroupConnect and Self-Organization
Published in Anna Maria Vegni, Dharma P. Agrawal, Cognitive Vehicular Networks, 2018
GroupConnect assumes that vehicles can and do support parallel MultiConnect by being able to communicate to 3G network at the time same as exchanging information with another vehicle in the group. Note that only the in-group technology has to be the same for all vehicles, while each individual vehicle is free to use any available technology for out-group communication (to the Internet). The specific combination widely available in smartphones today is 3G/LTE (out-group) with WiFi Direct (in-group) [4]. The device with WiFi Direct can also support WiFi connection in parallel with multiple WiFi Direct sessions to other devices in the group.
Speak Out: Turns Your Smartphone into a Microphone
Published in P. C. Thomas, Vishal John Mathai, Geevarghese Titus, Emerging Technologies for Sustainability, 2020
Ajima Saseendran, Akshitha Lakshmi, Aleena Jose, Gouri Gopan, Shiney Thomas
Wi-Fi Direct is a Wi-Fi standard enabling devices to easily connect with each other without requiring a wireless access point. There is a toggle button to switch on/off the Wi-Fi. There is another Discover button to discover the peers connected over the same Wi-Fi Fig. 30.3.(a). The WifiEnabled () is used to check whether the Wi-Fi is enabled or not and the setWifiEnabled() is used to set Wi-Fi on/off. It also displays alert messages when Wi-Fi is turned on/off.
A distribute and self-tuning wireless environment monitoring system for buildings based on the Wi-Fi Direct technology
Published in Science and Technology for the Built Environment, 2018
Wi-Fi technology has gotten a tremendous market success around the infrastructure mode of operation defined in the IEEE 802.11 standard and recently the Wi-Fi Alliance (WFA) has developed the Wi-Fi Direct (Wi-Fi ad hoc mode) technology which is a more extended and improved utilizing structure based on ad hoc (Wi-Fi Alliance 2009). In a Wi-Fi Direct network, each node has built up a SoftAP (an access point [AP] virtualized by software) and station (STA) inside, which enables the nodes to communicate with each other directly. The features of Wi-Fi Direct are discussed in detail and concretely in the technical specification. Wi-Fi Direct technology is more outstanding than other similar technologies in that it is easy-to-use, possessing high transmission speed, and able to immediately benefit from the technologies of the Ethernet. An energy efficient working strategy for access point (AP) based on Wi-Fi Direct has been studied by Camps-Mur et al. (2011) and the evaluation and application prospect of Wi-Fi Direct has been provided theoretically by Camps-Mur et al. (2013) and experimentally by Le and Ogawa (2014).