Browse Prior Art Database

System and Method to Provide an Option to Re-request a Rejected Downlink with Differing Parameters

IP.com Disclosure Number: IPCOM000249362D
Publication Date: 2017-Feb-21
Document File: 7 page(s) / 306K

Publishing Venue

The IP.com Prior Art Database

Related People

Prashanth Ramanna: AUTHOR

Abstract

Controller Pilot Data Link Communications (CPDLC) systems provide communication between an Air Traffic Controller (ATC) and a pilot. Flight crew personnel and air traffic controllers communicate with each other through uplink and downlink messages. If the downlink request from the pilot is rejected, pilot has to the additional task of coming up with alternate route which may be tedious and time consuming. A novel approach is proposed wherein a system comes up with an alternate route as a response to a downlink request rejection. A link is provided on the downlink rejection page that opens a new request page with pre-filled data. This approach reduces pilot head-down time and avoids inefficient flight plans.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 43% of the total text.

1

System and Method to Provide an Option to Re-

Request a Rejected Downlink with Differing

Parameters

Prashanth Ramanna

ABSTRACT

Controller Pilot Data Link Communications (CPDLC) systems provide communication

between an Air Traffic Controller (ATC) and a pilot. Flight crew personnel and air traffic

controllers communicate with each other through uplink and downlink messages. If the

downlink request from the pilot is rejected, pilot has to the additional task of coming up

with alternate route which may be tedious and time consuming. A novel approach is

proposed wherein a system comes up with an alternate route as a response to a

downlink request rejection. A link is provided on the downlink rejection page that opens

a new request page with pre-filled data. This approach reduces pilot head-down time

and avoids inefficient flight plans.

1. Introduction

Airplanes are generally operated according to a flight plan that is generated based on a

destination, weather, terrain, and other factors. After a flight commences, unforeseen

situations may arise that may necessitate a change in the flight plan. The situations that

may cause changes in the flight plan may include route availability, altitude availability,

weather, and other potential flight conflicts. The flight crew and the air traffic controller

(ATC) are in contact with each other to determine how to change the flight plan in

response to the unforeseen situations. Traditionally a pilot may use a radio to have

verbal communication with an ATC center to request to initiate contact or to receive

instructions from the ATC center.

2

With increasing air traffic, it has become difficult for ATC centers and pilots to have oral

communications with accuracy. Thus data link applications have been developed to

provide interface for textual communications between pilots and air traffic controllers.

Controller Pilot Data Link Communications (CPDLC) systems provide communication

between an Air Traffic Controller (ATC) and a pilot. Flight crew personnel and air traffic

controllers communicate with each other through uplink and downlink messages. A

CPDLC application can provide a pilot with the capability to respond to messages, to

request clearances and information, to report information, and to declare an emergency.

Typical interfaces for CPDLC systems are textual Human-Machine Interfaces (HMI),

such as the Multifunction Control and Display Unit (MCDU).

During the course of the flight, pilot can initiate a downlink request for an efficient route

based on his assessment OR as guided by an automated system. Downlink requests

may be rejected by ATC for various reasons. Upon receiving a rejection for a downlink

request, the pilot may choose to continue flying the existing route or re-assess the

situation to find the next best route. It is tedious and time consuming for the pilot to re-

assess the situation by scanning data from various displays to come up with the next

best alternative could. This process requir...