Patent ID: 7475757

Claim:
A method of assigning selected ones of a plurality of elevator cars to answer hall calls outstanding in a multifloor building, comprising the steps of: for each car available to serve a particular hall call outstanding in a building, (a) determining ( 45 ) an estimate of the wait time that will elapse after being registered before each said call will be answered; (b) providing ( 46 ) a perceived wait time as a first constant times a first non-linear function of each said wait time; (c) determining ( 47 ) an estimate of the travel time that will elapse after said each call is answered before reaching an estimated destination of a passenger registering said each call; (d) providing ( 51 ) a perceived travel time as a second constant times a second non-linear function of each said travel time; (e) providing ( 52 ) a perceived service time as a summation of said perceived wait time and said perceived travel time for each said wait time and corresponding travel time; and (f) allocating ( 59 ) said available cars to respond to said outstanding hall calls based on said perceived service times.