Which among the following is a disadvantage of proactive handoff?

Which among the following is a disadvantage of proactive handoff? Correct Answer Unused saved channels

In the proactive handoff, the xG user continues to sense during transmission, and the handoff is carried out prior to the triggering event. Low handoff latency is observed and multiple handoffs are reduced. The disadvantage of this method is the lack of usage of back up channels and degradation of performance due to poor sensing.

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