Last updated: June 24, 2019
Topic: ArtDesign
Sample donated:

In the present day world, Mobiles have been playing a major role in better communication between one person and another. Air passengers are required by the law to switch off their mobile phones on board any flight. In this regard it is very important to maintain the consistency of communication even as a user flies in an Airplane. As a result many techniques have been introduced to meet the above requirements. Sky Mobile is one such technique which provides support for both the user and the service provider for the communication in an easier and efficient way.

This paper is an application of low frequency (LF) i. e. BLUE-TOOTH which is commonly used in short networks. We are placing a solution for mobile phones user’s to use their mobiles on Airplanes that will be safe and helpful for both customer and service provider i. e. traveling consumer and mobile companies. This solution enables the user to remain connected in flight; the switch over from the cellular network to the in-flight Bluetooth network does not require any user initiation or change of the mobile handset.

We Will Write a Custom Essay Specifically
For You For Only $13.90/page!


order now

Here we make use of Bluetooth Airplane Gateway (BTAG) to detect the mobile phones while boarding and Ground Switching Center (GSH) to record the incoming calls and outgoing calls. Hence the user uses his handset as usual and not affecting the aircraft signals and the communication continues naturally. Introduction: Air passengers are required by the law to switch off their mobile phones on board any flight. This requirement has been imposed due to the two reasons. o First, signals emitted by the mobile phones interfere ith the Air Traffic Control (ATC) signals, undermining the safety of the flight. o Second, a mobile at such an altitude connects to multiple base stations simultaneously, clogging the resources of the ground network. Sky mobile is the novel solution based on the integration of the diverse communication links: Bluetooth, cellular network (GSM/1S-95), PSTN and Air to ground connections. This solution enables the user to remain connected in flight; the switch over from the cellular network to the in-flight Bluetooth network does not require any user initiation or change of the mobile handset.

Bluetooth, due to its power and short range and frequency hopping present negligible interference to ATC signals. When the passenger enters the plane, call forwarding is set up from the cellular networks to Grounds Switching Center and hazardous GSM emissions of the mobile phones are automatically switch off. All voice (or data) is received at GSC and transferred to an air ground to link to the Bluetooth airplane gateway (BTAG)in the plane.

Data received at BTAG is finally transmitted over an in flight Bluetooth network to the passenger here a Bluetooth enabled GSM phone is implemented on a laptop using a GSM modem and a Bluetooth kit &the ground switching center using a phone modem for connecting to the PSTN the automatic set up of various communication hops, call routing & transmission of voice over these link has been demonstrated, the system provides a unique & useful service is & perceived to be highly marketable. II. SYSTEM OVERVIEW The switch over from cellular network to the Bluetooth network is automatic, not requiring any user initiation. o The user phone number stays the same & he may receive calls on his usual mobile. o No change of handset is required while boarding a flight. Here the Bluetooth Airplane Gateway (BTAG) detects mobile phones as soon as it enters the airplane. The Bluetooth airplane gateway (BTAG) instruct the mobile phone to send the message to the cellular network (GSM), asking it to forward all incoming calls for the mobile to an assign number at the Ground Switching Center (GSH).

This is done just before take off. The cellular network connection is switch off, resulting in all hazardous Emissions from the handset being switch off. The handset is now connected through a Bluetooth link to the BTAG, which is in turn connected GSC over an approved air to ground link. All incoming & outgoing calls are connected through the GSC to BTAG, which forward them to the mobile phone, thus allowing the user to make or receive calls on the usual handset. To execute the above steps this system needs to perform the following task: Automatic detection of mobile phones entering the airplane an exchange of specific instruction for call forwarding and GSM switch off. o Establishment of reliable communication link across diverse network: the cellular network (GSM), the public switch telephone network (PSTN) and the in – flight Blue tooth network. o Transfer of voice data across this composite communication channel. o Authentication to provide security & prevent misuse. Requirements o The system should be able to establish connection with negligible failure rate.

The voice quality should be comparable to that of cellular networks. o Sufficient security measures should be provided to prevent unauthorized usage. System design Our system consists of three hardware units, o Mobile unit (a Bluetooth enabled mobile handset) o Bluetooth airplane gateway (BTAG) o Ground switching center (GSC) System Operation [pic] System Block Diagram: Rc with phone modem [pic] Working 1) Initializing the line, Initialization consists of four steps o Opening a logical line device. o Negotiating the TAPI version to use. Getting the line device capabilities. o Selecting the first device is the module configuration the line. mobile at the GSC. The PSTN module provides the following features: 2) Accepting a Call When the device moves from IDLE state, the module waits for fixed number of rings before taking the line off the hook and then the answer the call. This action places the line in the ACCEPTED state. 3) Signaling to Bluetooth Airplane Gateway (BATG) As soon as the call is answer (line is placed of the hook), it end the signal to the BTAG indicating call arrival. 4) Voice streaming Voice uses the wave device identifier (for the line) and the voice tool The voice data capture from the PSTN line transferred to the BTAG and vice versa. Voice is played out and recorded using the voice tool on output &input wave device identifier respectively, of the telephone line. 5) Calling a Number Given a phone number to be called the PSTN module hands. The voice data capture from the PSTN line transferred to the BTAG and vice versa.

Voice is played out and recorded using the voice tool on the output &input wave device identifier respectively, of the telephone line. The voice tool provides non-blocking playback and recording support duplex voice. [pic] VOICE TOOL FLOW DIAGRAM Conclusion In this paper we have presented a detail study of sky mobile techniques and how the technology has improved to use the users mobile in the air planes in spite of the law which avoids it. Sky Mobile is one such technique which provides support for both the user and the service provider for the communication in an easier and efficient way.

This paper is an application of low frequency (LF) i. e. BLUE-TOOTH which is commonly used in short networks. We are placing a solution for mobile phones user’s to use their mobiles on Airplanes that will be safe and helpful for both customer and service provider i. e. traveling consumer and mobile companies. This solution enables the user to remain connected in flight; the switch over from the cellular network to the in-flight Bluetooth network does not require any user initiation or change of the mobile handset.