Wi-Fi Power Save: Why Saving Power Is More Than Sending Fewer Packets
When a Wi-Fi device turns on power save, the symptoms often look like the network has suddenly gotten worse: ping jitters more, downlink data sometimes piles up, and application traffic appears to lag randomly by half a beat, while the logs show no obvious disconnect. The problem is often neither RSSI nor DHCP. It is that the terminal has intentionally reduced how long it stays awake to receive packets.
The easiest mistake is to describe Wi-Fi power save in one vague sentence: the terminal sleeps for a while, saves power, and then wakes up again to send and receive. What actually determines the experience is how these three things cooperate:
Read More