Disclosed is a method of operating an elevator system having a plurality of elevator cars that are simultaneously and individually moveable in an elevator shaft between a plurality of floors. A predetermined travel route is assigned to an elevator car or a plurality of elevator cars. This travel route is defined by a sequence of stopping points that is fixed in advance for the respective elevator car and at which stopping points the respective elevator car is intended to make a planned stop. The elevator cars to which a travel route is assigned are then moved in accordance with the travel route assigned to the respective elevator car. Further disclosed is an elevator controller and to an elevator system for carrying out such a method.

According to an example embodiment, an apparatus for scheduling elevator transport in an elevator system comprising one or more elevators is provided. The apparatus may be configured to: obtain, for a plurality of passengers, a respective transport request for elevator transport using said one or more elevators, the transport request comprising at least respective indications of an origin floor, a destination floor and a requested transport time window; derive, in dependence of said plurality of transport requests, a transport schedule that includes a respective transport allocation for each of said plurality of passengers, wherein a transport allocation for a passenger is derived in accordance with the requested transport time window indicated for the respective passenger, in view of transport allocations derived for other passengers and in view of a transport capacity of said one or more elevators and wherein the transport allocation for a passenger comprises at least a scheduled transport time for the respective passenger; and operate said one or more elevators in accordance with the derived transport schedule.

A method of assigning destination call in an elevator group forms chromosomes including genes where each gene is a correlation of a call and an elevator trip, the possible round trips are calculated, each round trip is evaluated for optimization procedure. The calls are assigned to the elevators by the destination call control based on the best chromosome determined.

Elevator system passengers are transported in one or more of a plurality of elevator cars. The elevator cars can require different amounts of energy to operate. Passenger trips can be allocated to one car or another car based on the expected energy consumption for the trips in one or the other car.

A method of allocating calls of a lift installation with at least one lift and at least one car per lift to move passengers in a journey from at least one input floor to at least one destination floor, a system for executing the method and a computer readable memory with instructions for executing the method. The method includes receiving input calls from passengers travelling from an input floor to a destination floor, each call identifying at least one floor as an input floor or a destination floor. A start zone with identified input floors and a destination zone with identified destination floors are determined from the input calls and destination calls. Each identified floor within a corresponding zone is considered using at least one selection criterion and a stopping floor is selected which satisfies the criterion. The car is caused to stop at fewer than all the identified input floors and identified destination floors during the journey.