System and method for isolating and locating wireless phones

A system for isolating an uplink bandwidth of a mobile communication terminal in a time-division duplexing frequency network, the system comprising:

• an interrogation device, which is configured to solicit a mobile communication terminal of a wireless communication network by imitating a base station of the wireless communication network to establish temporary communication with the interrogation device in an original bandwidth employed for communication between the interrogation device and the mobile communication terminal;
• one or more processors configured to isolate the uplink bandwidth of the mobile communication terminal from the downlink bandwidth of the interrogation device by;
• configuring the interrogation device to remove a downlink bandwidth, to the wireless communication terminal, from the original bandwidth to create a narrowed downlink bandwidth;
• calculating an uplink bandwidth to be less than and inside of the downlink bandwidth removed from the original bandwidth;
• and
• reconfiguring the mobile communication terminal to uplink to the interrogation device on the calculated uplink bandwidth of the original bandwidth, wherein there is no interference from the downlink signal to the uplink signal.

A method for locating a mobile communication terminal, the method performed by processors, the method comprising:

• operating an interrogation device, which is configured to solicit a mobile communication terminal of a wireless communication network by imitating a base station of the wireless communication network to establish temporary communication with the interrogation device in an original bandwidth employed for communication between the interrogation device and the mobile communication terminal;
• isolating, by the one or more processors, the uplink bandwidth of the mobile communication terminal from the downlink bandwidth of the interrogation device by;
• (i) configuring the interrogation device to remove a downlink bandwidth, to the wireless communication terminal, from an end of the original bandwidth to create a narrowed downlink bandwidth;
• (ii) calculating an uplink bandwidth at the end of the original bandwidth to be less than the downlink bandwidth removed from the original bandwidth;
• and
• (iii) reconfiguring the mobile communication terminal to uplink to the interrogation device on the calculated uplink bandwidth at the end of the original bandwidth;
• moving, by a user, a portable power detection device (PDD) configured to measure a power of a radio frequency (RF) signal emitted by the mobile communication terminal, through multiple geographical positions in an area of interest;
• measuring, by the PDD, a power of an RF signal in a bandwidth less than or equal to the calculated uplink bandwidth at multiple geographical positions;
• and
• determining, by the user, a location of the mobile communication terminal when higher measurements of power are measured indicating that the mobile communication terminal is close to the PDD.