# US 12,180,033 B2 · Elevator system with plural wireless communications paths

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- Number: US 12,180,033 B2
- Document ID: US12180033B2
- Status: Granted
- Kind: B2
- Application number: 16/713,845
- Filed: 2019-12-13
- Published: 2020-06-18
- Granted: 2024-12-31
- Earliest claimed: 2018-12-14
- Assignees: Otis Elevator Company
- Applicants: Otis Elevator Company
- Inventors: Enrico Manes; Goran Djuknic
- Web page: https://patentgrep.com/patent/US12180033B2

## CPC

- B66B 1/3453: {Procedure or protocol for the data transmission or communication}
- B66B 1/3461: {between the elevator control system and remote or mobile stations}
- H04W 24/08: Testing, {supervising or monitoring} using real traffic
- B66B: ELEVATORS; ESCALATORS OR MOVING WALKWAYS ({apparatus for raising or lowering persons on theatrical stages or the like A63J5/12} ; funicular railbound systems with rigid ground-supported tracks and cable traction, e.g. cliff railways, B61B9/00; arrangements of ammunition handlers in vessels B63G3/00; hoists, lifts, or conveyors for loading or unloading in general B65G; braking or detent devices controlling normal movements of winding drums or barrels B66D; ship-lifting devices E02C; garages for many vehicles with mechanical means for lifting vehicles E04H6/12; hoists for feeding ammunition or projectiles to launching apparatus or to loading mechanisms F41A9/00)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

An elevator system includes a controller; an elevator car; an elevator car controller mounted on the elevator car; a transceiver on the elevator car; an access point; the transceiver and the access point configured to provide wireless communications between the controller and the elevator car controller over a first communications path and a second communications path.

## Claims

### Claim 1

An elevator system comprising:
a controller;
an elevator car;
an elevator car controller mounted on the elevator car;
a transceiver on the elevator car;
an access point;
the transceiver and the access point configured to provide wireless communications between the controller and the elevator car controller over a first communications path and a second communications path;
wherein at least one of the controller and the elevator car controller is configured to:
detect a quality of the first communications path;
compare the quality of the first communications path to a threshold;
communicate primary information over the first communications path when the quality of the first communications path meets the threshold;
communicate secondary information over the second communications path when the quality of the first communications path meets the threshold;
switch communication of the primary information from the first communications path to the second communications path when the quality of the first communications path does not meet the threshold; and
switch communication of the secondary information from the second communications path to the first communications path when the quality of the first communications path does not meet the threshold.

### Claim 2 (depends on 1)

The elevator system of claim 1 wherein:
the first communications path comprises a first channel of a network and the second communications path comprises a second channel of the network.

### Claim 3 (depends on 1)

The elevator system of claim 1 wherein:
the first communications path comprises a first frequency of a network and the second communications path comprises a second frequency of the network.

### Claim 4 (depends on 1)

The elevator system of claim 1 wherein:
the first communications path comprises a first network and the second communications path comprises a second network.

### Claim 5 (depends on 4)

The elevator system of claim 4 wherein:
the first network and the second network are the same type of network.

### Claim 6 (depends on 4)

The elevator system of claim 4 wherein:
the first network and the second network are different types of networks.

### Claim 7 (depends on 1)

The elevator system of claim 1 wherein the primary information and the secondary information are different.

### Claim 8

A method for providing communications between a controller and an elevator car controller in an elevator system, the method comprising:
providing wireless communications between the controller and the elevator car controller over a first communications path and a second communications path;
detecting a quality of the first communications path;
comparing the quality of the first communications path to a threshold;
communicating primary information over the first communications path when the quality of the first communications path meets the threshold;
communicating secondary information over the second communications path when the quality of the first communications path meets the threshold;
switching communication of the primary information from the first communications path to the second communications path when the quality of the first communications path does not meet the threshold; and
switching communication of the secondary information from the second communications path to the first communications path when the quality of the first communications path does not meet the threshold.

### Claim 9 (depends on 8)

The method of claim 8 wherein:
the first communications path comprises a first channel of a network and the second communications path comprises a second channel of the network.

### Claim 10 (depends on 8)

The method of claim 8 wherein:
the first communications path comprises a first frequency of a network and the second communications path comprises a second frequency of the network.

### Claim 11 (depends on 8)

The method of claim 8 wherein:
the first communications path comprises a first network and the second communications path comprises a second network.

### Claim 12 (depends on 11)

The method of claim 11 wherein:
the first network and the second network are the same type of network.

### Claim 13 (depends on 11)

The method of claim 11 wherein:
the first network and the second network are different types of networks.