Minimizing energy for wireless web access with bounded slowdown
Proceedings of the 8th annual international conference on Mobile computing and networking
Application-specific Network Management for Energy-Aware Streaming of Popular Multimedia Formats
ATEC '02 Proceedings of the General Track of the annual conference on USENIX Annual Technical Conference
Self-tuning wireless network power management
Proceedings of the 9th annual international conference on Mobile computing and networking
An adaptive energy-efficient MAC protocol for wireless sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Access Point Power Saving in Solar/Battery Powered IEEE 802.11 ESS Mesh Networks
Proceedings of the Second International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks
Power Saving Access Points for IEEE 802.11 Wireless Network Infrastructure
IEEE Transactions on Mobile Computing
Micro power management of active 802.11 interfaces
Proceedings of the 6th international conference on Mobile systems, applications, and services
A Novel Scheduled Power Saving Mechanism for 802.11 Wireless LANs
IEEE Transactions on Mobile Computing
Cool-Tether: energy efficient on-the-fly wifi hot-spots using mobile phones
Proceedings of the 5th international conference on Emerging networking experiments and technologies
Optimal sleep/wake scheduling for time-synchronized sensor networks with QoS guarantees
IEEE/ACM Transactions on Networking (TON)
NAPman: network-assisted power management for wifi devices
Proceedings of the 8th international conference on Mobile systems, applications, and services
Catnap: exploiting high bandwidth wireless interfaces to save energy for mobile devices
Proceedings of the 8th international conference on Mobile systems, applications, and services
Anatomizing application performance differences on smartphones
Proceedings of the 8th international conference on Mobile systems, applications, and services
Avoiding the rush hours: WiFi energy management via traffic isolation
MobiSys '11 Proceedings of the 9th international conference on Mobile systems, applications, and services
Establishing mobile ad-hoc networks in 802.11 infrastructure mode
WiNTECH '11 Proceedings of the 6th ACM international workshop on Wireless network testbeds, experimental evaluation and characterization
An adaptive sniff scheduling scheme for power saving in Bluetooth
IEEE Wireless Communications
Optimizing background email sync on smartphones
Proceeding of the 11th annual international conference on Mobile systems, applications, and services
Model-driven energy-aware rate adaptation
Proceedings of the fourteenth ACM international symposium on Mobile ad hoc networking and computing
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Wi-Fi tethering (i.e., sharing the Internet connection of a mobile phone via its Wi-Fi interface) is a useful functionality and is widely supported on commercial smartphones. Yet existing Wi-Fi tethering schemes consume excessive power: they keep the Wi-Fi interface in a high power state regardless if there is ongoing traffic or not. In this paper we propose DozyAP to improve the power efficiency of Wi-Fi tethering. Based on measurements in typical applications, we identify many opportunities that a tethering phone could sleep to save power. We design a simple yet reliable sleep protocol to coordinate the sleep schedule of the tethering phone with its clients without requiring tight time synchronization. Furthermore, we develop a two-stage, sleep interval adaptation algorithm to automatically adapt the sleep intervals to ongoing traffic patterns of various applications. DozyAP does not require any changes to the 802.11 protocol and is incrementally deployable through software updates. We have implemented DozyAP on commercial smartphones. Experimental results show that, while retaining comparable user experiences, our implementation can allow the Wi-Fi interface to sleep for up to 88% of the total time in several different applications, and reduce the system power consumption by up to 33% under the restricted programmability of current Wi-Fi hardware.