Abstract:
A method for performing video surveillance of a mobile unit in a wireless network is provided. A wireless network receives a surveillance request for a mobile unit. The surveillance request comes from a law enforcement agency and includes the identity of the mobile unit and a geographical area. The wireless network determines that the mobile unit has entered the geographical area and sends the geographical location of the mobile unit from the wireless network to the law enforcement agency.

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention relates generally to communication systems, and more particularly to surveillance of mobile units. 
       BACKGROUND OF THE INVENTION 
       [0002]    Currently law enforcement agencies receive location information about targets, and must manually identify where the target is and need to contact various branches of law enforcement that possess aircraft to perform surveillance. This process is very slow and requires many manual steps, which slows the progress down even more. 
         [0003]    In addition, by the time the appropriate contacts have been made the target has often moved from the identified location. In this scenario, the target must be manually identified again, and the entire lengthy process of obtaining approval, tracking the target, and requesting and obtaining aircraft surveillance must be recompleted. 
         [0004]    Therefore, a need exists for a way of obtaining video surveillance of a target without the delays and problems associated with the current state of the art. 
       BRIEF SUMMARY OF THE INVENTION 
       [0005]    An exemplary embodiment of the present invention relates to a method and system for performing video surveillance of a mobile unit. 
         [0006]    In accordance with an exemplary embodiment, a court order is entered at a law enforcement agency (LEA). The court order indicates that an action of visual surveillance is requested, which includes the target mobile device and a priority level for the surveillance. 
         [0007]    The LEA sends a request surveillance message to the wireless network, which provides service to the targeted mobile unit. The request surveillance message preferably includes a request for visual surveillance of the targeted mobile unit, the identity of the targeted mobile unit, and the priority level for the surveillance. 
         [0008]    At some point a user utilizes the targeted mobile unit. For example, the user can initiate a call, receive a call, send or receive a text message, update the status of the mobile unit, or any other message that the mobile unit sends to the wireless network. At this point the targeted mobile unit sends an update message to the wireless network. In an exemplary embodiment, the update message includes an IRI that includes location information of the targeted mobile unit. 
         [0009]    The wireless network sends a location information message to the LEA. The LEA identifies that the targeted mobile unit is requested to have visual surveillance. The LEA can also include other information in making this decision, including but not limited to whether the mobile device is within a set of geographic areas or the time of day. Upon determining that the test for requesting visual surveillance is met, the LEA evaluates a group of assets near the location of the mobile unit that can respond to the request. 
         [0010]    In accordance with an exemplary embodiment, the LEA sends a query message to a UAV flight controller, which preferably controls at least one unmanned aerial vehicle (UAV) that covers the requested location. The UAV flight controller preferably utilizes the requested location and the priority information to determine whether it can deploy a UAV for surveillance. 
         [0011]    If the UAV flight controller is able to deploy a UAV in the region that includes the location of the targeted mobile unit, the UAV flight controller deploys a UAV. The UAV may already be airborne or could be currently grounded but prepared to fly. 
         [0012]    The LEA then preferably sends a surveillance request message to the UAV flight controller to observe the specified geographical coordinates reported in the request. 
         [0013]    The UAV flight controller forwards surveillance the request message to the UAV. The UAV maneuvers into position to observe the specified geographical coordinates. In an exemplary embodiment, the specified geographical coordinates include the current location of the targeted mobile unit. 
         [0014]    When at the specified geographical coordinates, the UAV performs the requested action. In an exemplary embodiment, the requested action is to perform video surveillance of the requested mobile device. 
         [0015]    The UAV sends recorded video to the UAV flight controller. 
         [0016]    The UAV flight controller forwards the surveillance video to the LEA, which then preferably makes the surveillance video available to law enforcement agents. 
         [0017]    At some point the targeted mobile unit may change locations and no longer be located within the specified geographical coordinates. 
         [0018]    In accordance with an exemplary embodiment, the wireless network reports the new location of the targeted mobile device to the LEA by sending a new location message to the LEA. The new location message includes the new geographical coordinates of the targeted mobile unit. 
         [0019]    Since in this exemplary embodiment the LEA already has the UAV allocated to it, the LEA passes the updated location information to the UAV flight controller within an updated location message. 
         [0020]    The UAV flight controller forwards the new location of the targeted mobile unit to the UAV in a new location message. In response to receipt of the new location message, the UAV maneuvers into a position to monitor the targeted mobile unit. 
         [0021]    The UAV proceeds to monitor the new location and provide updated video information to the UAV flight controller of the new location. 
         [0022]    The UAV flight controller forwards the newly received video to the LEA, which then makes the video available to law enforcement agents. 
         [0023]    When a predefined condition is met, the LEA sends a release message to the UAV to release the UAV from surveillance and make the UAV available for surveillance on other targets. In accordance with an exemplary embodiment, the predefined condition is a time duration. Alternately, the predefined condition can be that the target has left a geographic area, that the target hasn&#39;t moved for a specified amount of time or an LEA operator manually triggers the release. In the embodiment where the duration of the surveillance is extended, the UAV flight controller preferably requests that a second UAV position itself over the target geographical location before releasing the first UAV to return for refueling or other purposes. 
     
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
         [0024]      FIG. 1  depict a wireless network in accordance with an exemplary embodiment of the present invention. 
           [0025]      FIG. 2  depicts a flow diagram in accordance with an exemplary embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0026]    An exemplary embodiment of the present invention can be better understood with reference to  FIGS. 1 and 2 .  FIG. 1  depicts a communication network  100  including a wireless network  101 , mobile unit  102 , law enforcement agency  111 , UAV flight controller  121 , and UAV  122 . 
         [0027]    In accordance with an exemplary embodiment, wireless network  101  comprises a plurality of base stations and other network elements that allow wireless network  101  to process wireless communications. Wireless network  101  communicates with mobile unit  102  via any of a plurality of air interfaces. 
         [0028]    Mobile unit  102  is a mobile device that communicates with wireless network  101 , preferably using a wireless air interface. 
         [0029]    Law enforcement agency (LEA)  111  is an agency that is legally authorized to perform surveillance activities. For example, LEA  111  can be the Federal Bureau of Investigation (FBI), state police departments, or local police departments. 
         [0030]    Unmanned aerial vehicle (UAV)  122  is an unmanned aircraft that functions either by remote control or as a self-directing entity. UAV  122  is a powered, aerial vehicle that does not carry a human operator, uses aerodynamic forces to provide vehicle lift, can fly autonomously or be piloted remotely, can be expendable or recoverable, and carries a video surveillance system. UAV  122  can be a drone, which is a remotely controlled aircraft. UAV  122  can be controlled from a remote location or can be flown autonomously based on pre-programmed flight plans including a defined geographical area. It should be understood that the present invention can utilize any remote sensing device, such as stationary video cameras, regular cameras, people in the area, parabolic dishes to listen in to conversations, helicopters, satellites, patrol cars, etc. 
         [0031]    UAV flight controller  121  is a controller or other computing device that provides instructions and control to UAV  122 . UAV flight controller  121  is preferably located apart from UAV  122  and provides instructions and control from a remote location. 
         [0032]      FIG. 2  depicts a flow diagram  200  in accordance with an exemplary embodiment of the present invention. In accordance with an exemplary embodiment, a court order is entered at LEA  111 . The court order indicates that an action of visual surveillance is requested, which includes the target mobile device and a priority level for the surveillance. 
         [0033]    The LEA sends a request surveillance message  201  to wireless network  101 , which provides service to mobile unit  102 . The request surveillance message  201  preferably includes a request for visual surveillance of mobile unit  102 , the identity of the requested mobile unit  102 , and the priority level for the surveillance. 
         [0034]    At some point a user utilizes mobile unit  102 . For example, the user can initiate a call, receive a call, send or receive a text message, update the status of mobile unit  102 , or any other message that mobile unit  102  sends to wireless network  101 . At this point mobile unit  102  sends update message  202  to wireless network  101 . In an exemplary embodiment, update message  202  includes an IRI that includes location information of mobile unit  102 . 
         [0035]    Wireless network  101  sends location information message  203  to LEA  111 . 
         [0036]    LEA  111  identifies that the target is requested to have visual surveillance. LEA  111  can also include other information in making this decision, including but not limited to whether the mobile device is within a set of geographic areas or the time of day. Upon determining that the test for requesting visual surveillance is met, LEA  111  evaluates a group of assets near the location of mobile unit  102  that can respond to the request. 
         [0037]    In accordance with an exemplary embodiment, LEA  111  sends query message  204  to UAV flight controller  121 . UAV flight controller  121  controls at least one UAV  122  that covers the requested location. UAV flight controller  121  preferably utilizes the requested location and the priority information to determine whether it can deploy a UAV for surveillance. 
         [0038]    If UAV flight controller  121  is able to deploy a UAV in the region that includes the location of mobile unit  102 , UAV flight controller  121  deploys UAV  122 . UAV  122  may already be airborne or could be currently grounded but prepared to fly. 
         [0039]    LEA  111  then preferably sends surveillance request message  205  to UAV flight controller  121  to observe the specified geographical coordinates reported in the request. 
         [0040]    UAV flight controller  121  forwards surveillance request message  206  to UAV  122 . UAV  122  maneuvers into position to observe the specified geographical coordinates. In an exemplary embodiment, the specified geographical coordinates include the current location of mobile unit  102 . 
         [0041]    When at the specified geographical coordinates, UAV  122  performs the requested action. In an exemplary embodiment, the requested action is to perform video surveillance of the requested mobile device. 
         [0042]    UAV  122  sends recorded video  207  to the UAV flight controller. 
         [0043]    UAV flight controller  121  forwards surveillance video  208  to LEA  111 , which then preferably makes the surveillance video available to law enforcement agents. 
         [0044]    At some point mobile unit  102  may change locations and no longer be located within the specified geographical coordinates. 
         [0045]    In accordance with an exemplary embodiment, wireless network  101  reports the new location of the mobile device to LEA  111  by sending new location message  209  to LEA  111 . New location message  209  includes the new geographical coordinates of mobile unit  102 . 
         [0046]    Since in this exemplary embodiment LEA  111  already has UAV  122  allocated to it, LEA  111  passes the updated location information to UAV flight controller  121  within updated location message  210 . 
         [0047]    UAV flight controller  121  forwards the new location of mobile unit  102  to UAV  122  in new location message  211 . In response to receipt of new location message  211 , UAV  122  maneuvers into a position to monitor mobile unit  102 . 
         [0048]    UAV  122  proceeds to monitor the new location and provide updated video information  212  to UAV flight controller  121  of the new location. 
         [0049]    UAV flight controller  121  forwards the newly received video  213  to LEA  111 , which then makes the video available to law enforcement agents. 
         [0050]    When a predefined condition is met, LEA  111  sends release message  214  to UAV  122  to release UAV  122  from surveillance and make UAV  122  available for surveillance on other targets. In accordance with an exemplary embodiment, the predefined condition is a time duration. Alternately, the predefined condition can be that the target has left a geographic area, that the target hasn&#39;t moved for a specified amount of time or an LEA operator manually triggers the release. In the embodiment where the duration of the surveillance is extended, UAV flight controller  121  preferably requests that a second UAV position itself over the target geographical location before releasing the first UAV to return for refueling or other purposes. 
         [0051]    While this invention has been described in terms of certain examples thereof, it is not intended that it be limited to the above description, but rather only to the extent set forth in the claims that follow.