What it means
Access points provide overlapping coverage while the phone or laptop evaluates signal and candidates. Features such as 802.11k, 802.11v and 802.11r can assist compatible clients. They do not force every device to behave identically or promise a lossless transition. Security settings, backhaul and application sensitivity matter too.
How this affects everyday use
A device may remain attached to a distant access point, or briefly disconnect when settings differ between nodes. Excessive transmission power can make the wrong cell appear usable for too long.
A practical example
A call works in the lounge but pauses while walking upstairs.
What to check
- Note which access point serves the device before and after moving.
- Check matching network name, security and healthy node uplinks.
- Repeat the walk with a second client and a real call.
Practical next steps
- Update supported client and access-point firmware.
- Correct placement and coverage overlap before forcing roaming settings.
- Test fast-roaming options with every important device.
Keeping it reliable
Preserve working settings and document changes. A speed test at one fixed position cannot demonstrate successful roaming throughout a home.