Mobile Cellular Systems - Alak Roy

Traditional Handoff Algorithms
3. P new > P old + H,
Relative signal strength with Hysteresis: Handoff process is
initiated when the B new’s RSS exceeds the B old’s RSS by the
hysteresis value H.
4. P new > P old + H and P old < T,
Relative Signal Strength with Hysteresis and Threshold:
Combines both the threshold and hysteresis values concepts to
come with a technique with minimum number of handoffs. The
handoff is requested when the B old’s RSS is below the threshold
(T) and B new’s RSS is stronger than B old’s RSS by the hysteresis
value H.
All the above techniques should ensure initiation of handoff
before the B old’s RSS falls below Receiver Threshold (minimum
acceptable RSS for call continuation). Otherwise ongoing call is
dropped.
A multi-level thresholds based algo which assigns diff thresholds to the
users according to their speed.
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