03-09-2014, 10:18 AM
Sniffer for detecting lost mobiles
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ABSTRACT
The main scope of this paper is to detect the lost mobiles. Each and every day thousands of mobiles get misplaced or lost, though effective way for the blocking of the lost mobile to prevent unauthorized person from making and receiving the calls has been done by the manufacturers of the mobile with the help of International Mobile Equipment Identifier (IMEI) has been done but however there has been no development or very little progress for the detection of the misplaced mobile phone. For the detection of lost mobile SNIFFER plays a vital role .The sniffer device has to be designed precisely and size should be reduced for easy mobility for the purpose of detection .The device can be called as a mobile Base station that includes Sniffer Base station, unidirectional antenna, tracking software. The sniffer is a small base station that includes transceiver section. It should operate at a frequency which is much different from the frequency
of the current cell in which the operation of detection is being carried out. The directional antenna is an important device that is to be designed and used as it plays a major role. There are certain boundary conditions that have to be qualified for the identification of lost mobile like the power of the mobile should be good enough, the mobile phone should not be in the shadow region but however this method using modern technologies and devices.
Our paper seems to be a bit costlier for initial setup but the cost is gradually reduced
when effectively and efficiently utilized for the purpose of detection.
INTRODUCTION
One of the most interesting things about cell phone is that it is really a radio an extremely
Sophisticated radio, which uses some band of frequency that has the basic working similar to the Ordinary cordless phone. The mobile cellular communication has been appreciated since its birthing the early 70’s and the advancement in the field of VLSI has helped in designing less power, smaller size but efficient transceiver for the purpose of communication. But however the technology has not yet answered the loss or misplacement of the lost mobile phone which insignificantly increasing. In this paper we discuss the problem and the probable solution that could be done. The IMEI number is a unique number that is embedded in the mobile phone the main purpose of which is the blocking of calls that is made by unauthorized person once the mobile is reported as stolen but here we use it effectively for the purpose of detection
ABOUT IMEI
The GSM Moue’s IMEI (International Mobile Equipment Identity) numbering system is a 15 digit unique code that is used to identify the GSM/DCS/PCS phone. When a phone is switched on, this unique IMEI number is transmitted and checked against a data base of black listed or grey
listed phones in the network’s EIR (Equipment ID Register). This EIR determines whether the phone can log on tithe network to make and receive calls. To know the IMEI number the *#06#
has to be pressed, the number will be displayed in the LCD screen; it is unique to a mobile phone. If the EIR and IMEI number match, the networks can do a number of things. For example grey list or blacklist a phone: 1. Grey listing will allow the phone to be used, but it can be tracked
to see who has it (via the SIM information). 2. Black listing the phone from being used on any network where there is an EIR match
DESIGNING FOR THE SNIFFER
As stated this proposal is about the detection of lost mobile phone and for this purpose
we are designing a new device called the Sniffer. The sniffer device has to be designed precisely and size should be reduced for easy mobility for the purpose of detection. The device can be called as a mobile base station that includes the following important
Components:
1. Sniffer base station
2 .Unidirectional antenna
3 .Tracking software
SNIFFER BASE STATION
The sniffer is a small base station, it includes transceiver section. It should operate at a frequency that is much different from the frequency of the current cell in which the operation of detection is being carried out. Some of the main important things are the frequency that has to be generated by the transceiver section is around 900MHz range which is a VHF range and it is necessarily to design the oscillator circuit for that frequency range .
cooling that has to be provided to the circuit while designing the circuit that is to be operated at900MHz range of frequency. Hence proper design of base station is an important thing in the design of the sniffer. Mobile phones as well as the base station has low power transmitter is also transmitting at low power. The transmitter of the sniffer has to be a low power transmitter. This helps in the process of reducing the interference of the device with the devices that are in the other cells.
DESIGN OF UNIDIRECTIONAL ANTENNA
Though the transceiver in a sniffer plays an important role in the detection of the mobile
phone but however it is the directional antenna that has a major role in the design of the transmitter. The directional antenna acts as the eyes for the sniffer for the purpose of the detecting the lost mobile phones. Hence the proper design of the directional antenna is required. Antenna is a device which works at specified frequencies range for transmitting or receiving the data signal. In general, antennas transmit power depending on lobe pattern which varies from one
antenna to the other. The lobe pattern is a two dimensional diagrams that is used to show radiation pattern. Radiation pattern of directional antenna is shown in fig1.
In addition to this it is necessary that the transmitter should be a low power transmitter. The Gain and directivity are intimately related in antennas. The directivity of an antenna is a statement of how the RF energy is focused in one or two directions. Because the amount of RF energy remains the same, but is distributed over less area, the apparent signal strength is higher.
SOFTWARE FOR THE TRACKING
The software part plays a major role in the tracking of the lost mobile phone It is the base for the antenna to track the lost mobile the main feature of this software is that it helps in the process of creation of the data base and this is mainly done using a Random Access Memory. The mobile phone that is lost has certain IMEI number that is embedded in the chip. This RAM
of the sniffer device stores the IMEI number of the lost mobile phone. Thus this acts as a data base or the directory of the lost mobile phone number/The software that is to be designed in such a way that the software has the input as the IMEI number of the lost mobile phone from the RAM and this ID done using the SQL query that fetches the IMEI number. After getting the input of the lost mobile phones IMEI number it checks the comport for getting the information whether it obtains any signaling information from the lost device that might respond to the signal sent by the sniffer The programming is done with C or Java. However the C is most preferred as it is easily embedded with the chips. With VB the front end is designed
CONCLUSION
Since the boom of the mobile phone for the purpose of the communication there has been a large no. of complaints regarding the mobile phone that is being lost and there has been no effective method developed for detecting the lost device. The given paper dealt about the idea of development “Sniffer for the detection of lost Mobile phones” paves a way by means of which the lost mobile phones can be recovered. But the process of detection is yet to be developed
Through the software and demo has been developed and is with the authors. The demo has been written in VB that gives the over view of how the lost mobile is being detected and the software has been written in C. The SQL has to be used for the purpose of querying and the internal
Architecture is of lesser complexity compared to the base station as this mainly involves the control signal and there is no need for the voice process. The design involved the following
[attachment=67538]
ABSTRACT
The main scope of this paper is to detect the lost mobiles. Each and every day thousands of mobiles get misplaced or lost, though effective way for the blocking of the lost mobile to prevent unauthorized person from making and receiving the calls has been done by the manufacturers of the mobile with the help of International Mobile Equipment Identifier (IMEI) has been done but however there has been no development or very little progress for the detection of the misplaced mobile phone. For the detection of lost mobile SNIFFER plays a vital role .The sniffer device has to be designed precisely and size should be reduced for easy mobility for the purpose of detection .The device can be called as a mobile Base station that includes Sniffer Base station, unidirectional antenna, tracking software. The sniffer is a small base station that includes transceiver section. It should operate at a frequency which is much different from the frequency
of the current cell in which the operation of detection is being carried out. The directional antenna is an important device that is to be designed and used as it plays a major role. There are certain boundary conditions that have to be qualified for the identification of lost mobile like the power of the mobile should be good enough, the mobile phone should not be in the shadow region but however this method using modern technologies and devices.
Our paper seems to be a bit costlier for initial setup but the cost is gradually reduced
when effectively and efficiently utilized for the purpose of detection.
INTRODUCTION
One of the most interesting things about cell phone is that it is really a radio an extremely
Sophisticated radio, which uses some band of frequency that has the basic working similar to the Ordinary cordless phone. The mobile cellular communication has been appreciated since its birthing the early 70’s and the advancement in the field of VLSI has helped in designing less power, smaller size but efficient transceiver for the purpose of communication. But however the technology has not yet answered the loss or misplacement of the lost mobile phone which insignificantly increasing. In this paper we discuss the problem and the probable solution that could be done. The IMEI number is a unique number that is embedded in the mobile phone the main purpose of which is the blocking of calls that is made by unauthorized person once the mobile is reported as stolen but here we use it effectively for the purpose of detection
ABOUT IMEI
The GSM Moue’s IMEI (International Mobile Equipment Identity) numbering system is a 15 digit unique code that is used to identify the GSM/DCS/PCS phone. When a phone is switched on, this unique IMEI number is transmitted and checked against a data base of black listed or grey
listed phones in the network’s EIR (Equipment ID Register). This EIR determines whether the phone can log on tithe network to make and receive calls. To know the IMEI number the *#06#
has to be pressed, the number will be displayed in the LCD screen; it is unique to a mobile phone. If the EIR and IMEI number match, the networks can do a number of things. For example grey list or blacklist a phone: 1. Grey listing will allow the phone to be used, but it can be tracked
to see who has it (via the SIM information). 2. Black listing the phone from being used on any network where there is an EIR match
DESIGNING FOR THE SNIFFER
As stated this proposal is about the detection of lost mobile phone and for this purpose
we are designing a new device called the Sniffer. The sniffer device has to be designed precisely and size should be reduced for easy mobility for the purpose of detection. The device can be called as a mobile base station that includes the following important
Components:
1. Sniffer base station
2 .Unidirectional antenna
3 .Tracking software
SNIFFER BASE STATION
The sniffer is a small base station, it includes transceiver section. It should operate at a frequency that is much different from the frequency of the current cell in which the operation of detection is being carried out. Some of the main important things are the frequency that has to be generated by the transceiver section is around 900MHz range which is a VHF range and it is necessarily to design the oscillator circuit for that frequency range .
cooling that has to be provided to the circuit while designing the circuit that is to be operated at900MHz range of frequency. Hence proper design of base station is an important thing in the design of the sniffer. Mobile phones as well as the base station has low power transmitter is also transmitting at low power. The transmitter of the sniffer has to be a low power transmitter. This helps in the process of reducing the interference of the device with the devices that are in the other cells.
DESIGN OF UNIDIRECTIONAL ANTENNA
Though the transceiver in a sniffer plays an important role in the detection of the mobile
phone but however it is the directional antenna that has a major role in the design of the transmitter. The directional antenna acts as the eyes for the sniffer for the purpose of the detecting the lost mobile phones. Hence the proper design of the directional antenna is required. Antenna is a device which works at specified frequencies range for transmitting or receiving the data signal. In general, antennas transmit power depending on lobe pattern which varies from one
antenna to the other. The lobe pattern is a two dimensional diagrams that is used to show radiation pattern. Radiation pattern of directional antenna is shown in fig1.
In addition to this it is necessary that the transmitter should be a low power transmitter. The Gain and directivity are intimately related in antennas. The directivity of an antenna is a statement of how the RF energy is focused in one or two directions. Because the amount of RF energy remains the same, but is distributed over less area, the apparent signal strength is higher.
SOFTWARE FOR THE TRACKING
The software part plays a major role in the tracking of the lost mobile phone It is the base for the antenna to track the lost mobile the main feature of this software is that it helps in the process of creation of the data base and this is mainly done using a Random Access Memory. The mobile phone that is lost has certain IMEI number that is embedded in the chip. This RAM
of the sniffer device stores the IMEI number of the lost mobile phone. Thus this acts as a data base or the directory of the lost mobile phone number/The software that is to be designed in such a way that the software has the input as the IMEI number of the lost mobile phone from the RAM and this ID done using the SQL query that fetches the IMEI number. After getting the input of the lost mobile phones IMEI number it checks the comport for getting the information whether it obtains any signaling information from the lost device that might respond to the signal sent by the sniffer The programming is done with C or Java. However the C is most preferred as it is easily embedded with the chips. With VB the front end is designed
CONCLUSION
Since the boom of the mobile phone for the purpose of the communication there has been a large no. of complaints regarding the mobile phone that is being lost and there has been no effective method developed for detecting the lost device. The given paper dealt about the idea of development “Sniffer for the detection of lost Mobile phones” paves a way by means of which the lost mobile phones can be recovered. But the process of detection is yet to be developed
Through the software and demo has been developed and is with the authors. The demo has been written in VB that gives the over view of how the lost mobile is being detected and the software has been written in C. The SQL has to be used for the purpose of querying and the internal
Architecture is of lesser complexity compared to the base station as this mainly involves the control signal and there is no need for the voice process. The design involved the following