* Uplink Poll-Based Power Save Delivery
UPSD saves cell phone power
By Lynn Lucas
The popularity of VoIP and the convergence of Wi-Fi and cellular environments have driven the development of specifications that improved voice quality on dual-mode Wi-Fi/cellular handsets. While the original 802.11 protocol was designed with an optional power-save mode to minimize battery usage in portable devices, this was not enough to handle the QoS required for Wi-Fi/cellular handsets.
The Seamless Converged Communication Across Networks (SCCAN) Forum, an organization of vendors, has recognized the need to enhance that power-save mechanism with a new specification, Uplink Poll-Based Power Save Delivery (UPSD).
For the full details on UPSD, please go to:
https://www.nwfusion.com/news/tech/2005/022105techupdate.html?nlt
