Ambient Computing Handoff | mysimulator.uk

Ambient Node Network

Click anywhere on the floor to walk the user. Their live compute session automatically hands off to whichever embedded device currently serves it best.

Node density 10

Handoff Policy

Hysteresis margin 15%

Signal decay rate 1.20

Session Telemetry

Active host device

Node 0

Signal strength

Latency

0 ms

Handoffs

Seamless coverage

100%

How it works

Ubiquitous computing (Mark Weiser's "calm technology") embeds compute into the environment rather than a single device, so a task follows the user invisibly. Here every ambient node i scores itself against the user's current position each frame:

signal_i  = 1 / (1 + k * d_i^2)        (k = decay rate, d_i = distance to node i)
score_i   = signal_i * (1 - 0.5 * load_i)
latency_i = 8 + 3 * d_i + 40 * load_i    (ms)

Node load oscillates over time to model background traffic on each device. The session stays on its current host unless a rival node's score beats it by more than the hysteresis margin — without that margin the session would flicker between two similar-strength nodes every frame; with it, handoffs only fire when genuinely worth it.

Node density — how many ambient devices are embedded in the room.
Signal decay rate — how fast a node's usable signal falls off with distance (k above).
Auto-Walk — the user follows a smooth wandering path instead of manual clicks.
Seamless coverage — the fraction of elapsed time the active host's signal has stayed above 50%, i.e. how "invisible" the handoffs have felt.

Real-world relevance: this is the same scoring-and-hysteresis pattern behind Wi-Fi roaming (802.11k/v), cellular handover between base stations, and multi-device session continuity (e.g. a video call jumping from your phone to a room's smart display as you walk in).

Click the floor to move the user

Active host + session link Idle ambient node User

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