Patent Publication Number: US-10764763-B2

Title: Tactical rescue wireless base station

Description:
RELATED APPLICATION 
     This U.S. patent application is a continuation of and claims priority to U.S. patent application Ser. No. 15/787,266, filed Oct. 18, 2017, which is a continuation of and claims priority to U.S. patent application Ser. No. 15/367,053, filed on Dec. 1, 2016, now U.S. Pat. No. 9,826,415, issued Nov. 21, 2017. application Ser. Nos. 15/787,266 and 15/367,053 and U.S. Pat. No. 9,826,415 are fully incorporated herein by reference. 
    
    
     BACKGROUND 
     Modern telecommunication systems have been deployed widely across population centers and include heterogeneous mixtures of second, third, and fourth generation (2G, 3G, and 4G) cellular-wireless access technologies, which may be cross-compatible and may operate collectively to provide data communication services. Global Systems for Mobile (GSM) is an example of 2G telecommunications technologies; Universal Mobile Telecommunications System (UNITS) is an example of 3G telecommunications technologies; and Long Term Evolution (LTE), including LTE Advanced, and Evolved High-Speed Packet Access (HSPA+) are examples of 4G telecommunications technologies. 
     However, despite the near ubiquitous implementation of telecommunication systems in population centers, there are still locations that may not support wireless communications, such as national parks or wilderness areas. Further, in disaster situations, installed network devices may not operate correctly to provide wireless communications. Without wireless signals, user equipment may not communicate with a network to request assistance or rescue services, or receive information updates. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The detailed description is set forth with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The use of the same reference numbers in different figures indicates similar or identical items or features. 
         FIG. 1  illustrates a pictorial flow diagram of a process of deploying a tactical wireless base station on an unmanned aerial vehicle to search for a signal of user equipment and to facilitate communication with the user equipment. 
         FIG. 2  illustrates a pictorial flow diagram of a process of deploying a plurality of tactical wireless base stations to connect with a target user equipment, and to provide indications to locate the target user equipment. 
         FIG. 3  illustrates a pictorial flow diagram of a process of deploying a tactical wireless base station during a network outage, for example, to provide event indications. 
         FIG. 4  illustrates a pictorial flow diagram of a process of deploying a tactical wireless base station to provide instructions to wirelessly enabled devices. 
         FIG. 5  illustrates an example environment for operating one or more tactical wireless base stations in conjunction with a centralized server. 
         FIG. 6  illustrates an exemplary tactical wireless base station. 
         FIG. 7  illustrates an exemplary centralized server configured to interact with a tactical wireless base station. 
         FIG. 8  illustrates an example process for deploying a tactical wireless base station to locate a target user equipment. 
     
    
    
     DETAILED DESCRIPTION 
     The systems, devices, and techniques described herein are directed to tactical wireless base stations and applications thereof. For example, a tactical wireless base station may include a plurality of hardware or software radios configured to facilitate communication over any wireless protocol. In some instances, a tactical wireless base station may be deployed on an unmanned aerial vehicle (UAV) to search for a wireless signal of a target user equipment (UE) corresponding to a lost hiker, for example, in an area out of range of traditional base stations, and/or to locate the target UE to convey the location to rescuers. In some instances, a tactical wireless base station can be deployed in a handheld device and may coordinate with other tactical wireless base stations in order to triangulate a location of user equipment. In some instances, the tactical wireless base station may communicate with user equipment via a one-way or two-way communication. In some instances, the tactical wireless base station can communicate with user equipment via Wireless Emergency Alerts and/or via the Commercial Mobile Alert System. 
     A tactical wireless base station may be deployed to provide alerts to a plurality of user equipment to alert users to a pending emergency, such as a tsunami, or following an event that caused network outage, such as an earthquake. For example, a tactical wireless base station may be deployed on an unmanned aerial vehicle (UAV) along a coastline to deliver alerts to user equipment of an imminent tsunami, for example, to encourage users to move to safety. In some instances, the tactical wireless base station may interface with wirelessly enabled device (e.g., devices in the Internet of Things (IOT)) to instruct the devices to perform actions and/or prepare for or respond to an emergency situation. 
     A tactical wireless base station may be configured to search for a particular user equipment (e.g., a target UE), to communicate with rescuers or emergency personnel (e.g., a searching UE), and/or to communicate with one or more third party UEs encountered along the way. The tactical wireless base station may include a plurality of hardware or software based radios to communicate with any wireless protocol. The tactical wireless base station may determine a location of a target UE via triangulation techniques including determining a received signal strength indication (RSSI) of a target signal at various locations and providing directionality towards a source of the target signal. In some instances, tactical wireless base stations may coordinate to exchange signal strength indications to improve target UE location. The tactical wireless base station may include authentication to authenticate to user equipment a reliability of communication, alerts, messages, and/or instructions. These and other aspects of the disclosure are discussed herein. 
     In this manner, the systems, devices, and techniques described herein improve a functioning of a network by providing a wireless network where no wireless network is available. Further, a tactical wireless base station can be deployed to act as an intermediate link between user equipment and a fixed base station, and can be deployed to provide additional capacity when a network performance is degraded or unreliable (e.g., in an emergency). These and other improvements to the functioning of a network are discussed herein. 
     The systems, devices, and techniques described herein can be implemented in a number of ways. Example implementations are provided below with reference to the following figures. 
       FIG. 1  illustrates a pictorial flow diagram of a process  100  of deploying a tactical wireless base station on an unmanned aerial vehicle to search for a signal of user equipment and to facilitate communication with the user equipment. The process  100  is illustrated with a base station  102  transmitting a signal  104  that is blocked by an obstruction, such as a mountain  106 . Further, a hiker  108  may be lost or injured, and may be unable to communicate with the base station  102  via user equipment  110  (e.g., a smartphone) carried by the hiker  108 . Thus, in this example, the hiker  108  may be presumed lost and in need of rescue. Although discussed in the context of a hiker, it may be understood that the operations described herein are not limited to hiking, and may be applicable to locating any user or user equipment. For example, user equipment may include, and is not limited to, one or more servers, smart phones, mobile phones, cell phones, tablet computers, portable computers, laptop computers, personal digital assistants (PDAs), electronic book devices, or any other electronic devices that can generate, request, receive, transmit, or exchange voice, video, and/or digital data. 
     At  112 , the operation may include receiving an identifier of a user equipment (UE). For example, an identifier may correspond to the user equipment  110  carried by the hiker  108  who is missing or lost. In some instances, the identifier may include an international mobile station equipment identity (IMEI), an international mobile subscriber identity (IMSI), a mobile identification number (MIN), a mobile subscription identification number (MSIN), electronic serial number (ESN), media access control address (MAC address), Internet protocol address (IP address), a wireless protocol address such as a BLUETOOTH address, etc. In some instances, the identifier may be received at a centralized server (discussed below) and provided to a tactical wireless base station deployed on an unmanned aerial vehicle  114 . The operation  112  may further include receiving a last-known location of the hiker  108  (e.g., via trip plans or by checking call logs to determine a last base station in contact with the UE  110 ) or may include receiving an intended destination of the hiker  108 . 
     At  116 , the operation may include searching for a signal of user equipment. In some instances, the operation  116  may include searching for user equipment (e.g., a target UE) corresponding to the identifier received in the operation  112 . As illustrated in example  118 , the UAV  114  may operate in a particular area associated with the hiker  108 . In some instances, the operation  116  may include transmitting and receiving a plurality of wireless signals corresponding to a plurality of wireless protocols, illustrated as wireless signals  120  and  122 . In some instances, the UAV  114  may transmit the wireless signals  120  and  122  to search for user equipment. In some instances, the operation  116  may include establishing a communication with a third party hiker  124  carrying a third party user equipment  126 . In some instances, the operation  116  may be performed any number of times or may be performed continuously until the hiker  108  is located. 
     At  128 , the operation may include connecting with user equipment. In an example  130 , the UAV  114  including the tactical wireless base station may transmit and/or receive a signal  132  with the user equipment  110 . In some instances, the UE  110  may correspond to the target UE, or may correspond to a third party UE. 
     At  134 , the operation may include facilitating communication with user equipment. For example, for the UE connected in the operation  128 , the operation  134  may include transmitting and/or receiving unidirectional or bidirectional communication with the UE  110 . As illustrated in an example  136 , the operation  134  may include transmitting a message “Press ‘1’ for help” to the UE  110  of the hiker  108 . If the hiker is lost or in need of rescue, the hiker  108  may respond to the communication facilitated in the example  136 . In some instances, the operation  136  may include transmitting instructions to the hiker  108  (e.g., “stay put”) or may provide a connection between the UAV  114  and the base station  102  (e.g., as an intermediary between the UE  110  and the base station  102 ) so that the hiker  108  may transmit or receive wireless data. In some instances, the operation  134  may include capturing audio and/or video of the hiker  108 , and in some instances, the operation  134  may include confirming an identity of the hiker  108 , and relaying a location of the hiker  108  to the third party hiker  124 , rescue personnel, or other recipients. If connecting to a third party UE (such as the UE  126 ), the operation  134  may include a message asking the third party hiker  124  to look out for a missing hiker, or a message directing the third party hiker  124  towards the hiker  108  to render aid. 
       FIG. 2  illustrates a pictorial flow diagram of a process  200  of deploying a plurality of tactical wireless base stations to connect with a target user equipment, and to provide indications to locate the target user equipment. In some instances, aspects of the process  200  can be combined with aspects of the process  100  (and vice versa) to provide multi-level searching (e.g., UAV-based and personnel-based searching). In some instances, the process  200  may include an operation similar to the operation  112  of  FIG. 1 . 
     As illustrated,  FIG. 2  may include the base station  102  providing the wireless signal  104  that is blocked by an obstruction, such as the mountain  106 . 
     At  202 , the operation may include searching for a signal of a target user equipment. As illustrated in example  204 , one or more searchers  206 ( 1 ),  206 ( 2 ), . . . ,  206 (N) (collectively referred to as searchers  206 ) may each include a tactical wireless base station  208 ( 1 ),  208 ( 2 ), . . . ,  208 (N) (collectively referred to as tactical wireless base stations  208 ) implemented as a handheld device. Further, in some instances, each of the tactical wireless base stations  208  may transmit or receive a plurality of wireless protocols, represented by signals  210 ( 1 ),  210 ( 2 ), . . . ,  210 (N). For example, the tactical wireless base stations may be configured to transmit or receive on wireless protocols including, but not limited to, 2G, 3G, 4G, LTE, BLUETOOTH, BLUETOOTH LOW ENERGY, LORAWI-FI, WIRELESSHD, WIGIG, Z-WAVE, ZIGBEE, AM/FM, RFID, NFC, etc. Thus, by transmitting and/or receiving a wide range of wireless signals, the tactical wireless base station may increase a probability of detecting any signals emitted by a lost hiker, such as a hiker  212  including a user equipment  214 . In some instances, the operation  202  may include filtering any number of signals, or limiting or restricting a number of wireless protocols to search, which in some instances, may reduce a number of false positives while searching. 
     At  216  the operation may include connecting with a target user equipment (UE), such as the user equipment  214  of the hiker  212 . An example  218  illustrates a time after the example  204 , whereby one or more of the searchers  206  has moved towards the hiker  212 . In the example  218 , the tactical wireless base station  208 ( 1 ) has established a connection  220  with the target UE  214  of the hiker  212 . In some instances, the operation  216  may include determining a received signal strength indication (RSSI) of the connection  220 , or other operations to determine a signal strength and/or position of the target UE  214 . 
     At  222 , the operation may include providing indication(s) to searching user equipment (UE) to locate the target UE. An example  224  illustrates a time after the example  218 , whereby one or more of the searchers  206  has moved towards the hiker  212 . As illustrated in the example  224 , the operation  222  may include providing one or more signals to the tactical wireless base stations that one of the tactical wireless base stations  208  has established a connection (e.g., the connection  220 ) with the target UE  214 . For example the tactical wireless base station  208 ( 1 ) can provide an indication  226  to the tactical wireless base station  208 ( 2 ), which in turn may provide an indication  228  to the tactical wireless base station  208 (N). In some instances, the indications  226  and  228  may include a location of the tactical wireless base station (e.g.,  208 ( 1 ) and/or  208 ( 2 )), a RSSI of the connection  220 , and a suggested direction for the searchers  206  to head to optimize a probability of establishing a connection (e.g., a connection  230  and  232  with the target UE  214 , respectively). Based on receiving the indications  226  and  228 , respectively, the searchers  206  may alter a direction of travel. In some instances, the operation  222  may be repeated as changes in a status of one or more connections  220 ,  230 , and/or  232  (e.g., as signal strength increases to decreases) to facilitate locating the target UE  214 . 
     The process  200  may further include facilitating communication with the target UE  214 , similar to that described in connection with the operation  134  of  FIG. 1 . 
       FIG. 3  illustrates a pictorial flow diagram of a process  300  of deploying a tactical wireless base station during a network outage, for example, to provide event indications. In some instances, aspects of the process  300  can be combined with aspects of the processes  100  and/or  200  (and vice versa) to provide multi-level searching in addition to providing indications of events. As illustrated,  FIG. 3  represents a coastline  302  exposed to an event, such as a tsunami  304 . Although described in the context of a coastline and tsunami, it may be understood that the process  300  may be performed in a variety of situations and is not limited to this context. 
     At  306 , the operation may include receiving an indication of an event. For example, an event may be an impending tsunami, an earthquake, an impending solar flare, a tornado, a hurricane, a storm, etc. In some instances, the event may be an “all clear” indication, such as an indication that a threat of a tsunami has passed. In some instances, the operation  306  may include receiving the indication from a government agency, such as the National Weather Service or the National Oceanic and Atmospheric Administration, from a police department or fire department, from a news agency, etc. In some instances, the operation  306  may include receiving the indication at a centralized server and deploying a tactical wireless base station on the UAV  114  to provide indications of the event, as discussed herein. 
     At  308 , the operation may include transmitting on a plurality of channels to establish a communication with a plurality of user equipment. For example, the tactical wireless base station may transmit on any wireless channel or using any wireless protocol. As illustrated in example  310 , the tactical wireless base station transmits signals  312 ( 1 ),  312 ( 2 ), . . . ,  312 (N) (collectively referred to as signals  312 ) to various user equipment  314 ( 1 ),  314 ( 2 ), . . . ,  314 (N) (collectively referred to as user equipment  314 ). 
     At  316 , the operation may include authenticating a communication with user equipment. For example, the operation  314  may include providing a code, password, identification number, public encryption key or a private encryption key to authenticate that the tactical wireless base station is authorized to communicate with the UEs  314  via an emergency alert system. In some instances, due to the nature of the alert (e.g., a tsunami alert) the operation  316  reduces abuse of the alert system. 
     At  318 , the operation may include providing an indication of the event to the user equipment. For example, the tactical wireless base station may provide any audio, video, text, haptic, etc., indication to the user equipment. In some instances, the operations  308 ,  316 , and/or  318  may be repeated for each UE detected by the tactical wireless base station, and in some instances, the process  300  may include navigating the UAV  114  based at least in part on detected UEs and/or whether a communication with the UE has been attempted, is in process, and/or is completed. For example, the UAV  114  may remain in range or remain in communication with a UE until a communication has been confirmed that the indication has been provided to the UE. 
       FIG. 4  illustrates a pictorial flow diagram of a process  400  of deploying a tactical wireless base station to provide instructions to wirelessly enabled devices. In some instances, aspects of the process  400  can be combined with aspects of the processes  100 ,  200 , and/or  300  (and vice versa) to provide multi-level searching in addition to providing indications of events and instructions to wirelessly enabled devices. In one example, a tactical wireless base station can be deployed on the UAV  114  to provide indications of an event to user equipment (e.g., of a tsunami, as described in connection with  FIG. 3 ), and provide instructions to wirelessly enabled devices (e.g., a gas valve) to perform an operation (e.g., shut off the valve) in preparation of or in response to the event, as described herein. 
     At  402 , the operation can include receiving an indication of an event. In some instances, the operation  402  may correspond to the operation  306  in  FIG. 3 . In some instances, the operation  402  can include receiving one or more commands or instructions to be relayed to one or more wirelessly enabled device based at least in part on the event. Further, the operation  402  can include receiving waypoints, navigation instructions, and/or a route directing the UAV  114  including the tactical wireless base station to perform the operations of  FIG. 4 . 
     At  404 , the operation can include transmitting on a plurality of channels to discover one or more wirelessly enabled devices. In an example  406 , the UAV  114 , for example, can transmit (and/or receive) on the plurality of channels, represented as signals  408 ( 1 ),  408 ( 2 ),  408 ( 3 ), . . . ,  408 (N) (collectively referred to as signals  408 ). In some instances, the signals  408  may be transmitted to a particular wirelessly enabled device, and in some instances, the operation  404  may include searching for a particular wirelessly enabled device. In some instances, the signals  408  may be received by any device capable of receiving the transmission (e.g., the transmission in not directed to a particular device). 
     At  410 , the operation may include determining instructions for one or more wirelessly enabled devices. The operation  410  may include determining a type of the wirelessly enabled device, and determining one or more instructions for that wirelessly enabled device based on the type of the wirelessly enabled device. For example, in some instances, the signal  408 ( 1 ) may be received by a wirelessly enabled device  412 , which may correspond to a wirelessly-actuated valve, such as for a gas line. Determining an instruction to be transmitted to the wirelessly enabled device  412  may include determining a capability of the device  412 . For example, the wirelessly enabled device  412  may be configured to remotely open or close a valve. In another example, the signal  408 ( 2 ) may be received by a wirelessly enabled device  414 , which may correspond to an autonomous vehicle. Determining an instruction for the device  414  may include determining driving instructions to direct the device  414  to a particular location, for example, to evacuate personnel. In another example, the signal  408 ( 3 ) may be received by a wirelessly enabled device  416 , which may correspond to a remotely-activated traffic signal. For example, determining instructions for the device  416  may include determining a traffic pattern to facilitate transportation, for example, during evacuation during an emergency. 
     At  418 , after instructions have been determined for a wirelessly enabled device, the instructions can be transmitted to the wirelessly enabled device, respectively. For example, the signal  408 ( 1 ) may include instructions to open or lose the valve of the device  412 . The signal  408 ( 2 ) may include driving directions for the autonomous vehicle, and the signal  408 ( 3 ) may include controls to control a flow of traffic by changing lights on the traffic light. These and other example are contemplated within the scope of the disclosure. 
       FIG. 5  illustrates an example environment  500  for operating one or more tactical wireless base stations in conjunction with a centralized server. In some instances, the processes  100 ,  200 ,  300 , and/or  400  can be implemented using some or all of the components described in the environment  500 . In some instances, the environment  500  can include one or more centralized servers  502  in communication with the base station  102  via one or more networks  504 . For example, the network(s)  504  may include any wired or wireless networks to facilitation communication, such as a LAN, WAN, the Internet, a backhaul network, etc. The base station  102  may provide wireless signals  104  that may be blocked by the mountain  106 , thereby resulting in an area  506  that has a degraded wireless signal, or does not support wireless communication with the base station  102 , absent the tactical wireless base station deployed on the UAV  114 , as discussed herein. For example, the base station  102  can communicate with the tactical wireless base station deployed on the UAV  114  via one or more signals  508 . 
     In turn, the tactical wireless base station deployed on the UAV  114  may be in communication with one or more searchers  206 ( 1 ) and  206 ( 2 ) via the tactical wireless base stations  208 ( 1 ) and  208 ( 2 ) proximate to or carried by the searchers  206 ( 1 ) and  206 ( 2 ). As discussed herein, the tactical wireless base stations can transmit a plurality of signals to search for a wireless signal transmitted by the target user equipment  110  carried by the hiker  108 , for example. In some instances, the centralized server  502  can coordinate activities of the UAV  114  and the searchers  206  to quickly locate the hiker  108 , based on signals provided by the target user equipment  110 . 
       FIG. 6  illustrates an example tactical wireless base station  600  (also referred to as a base station  600 ). As discussed herein, the base station  600  can be deployed in a variety of devices, including but not limited to the unmanned aerial vehicle  114 , the handheld device  208 , and a stationary base station  602 . Further, the base station  600  can be implemented in any sort of device capable of engaging in wired or wireless communication with other, remote devices. Thus, the base stations  600  can include, but are not limited to, servers, smart phones, mobile phones, cell phones, tablet computers, portable computers, laptop computers, personal digital assistants (PDAs), electronic book devices, or any other electronic devices that can generate, request, receive, transmit, or exchange voice, video, and/or digital data. 
     As illustrated, the base station  600  comprises a memory  604  storing a filtering module  606 , a location module  608 , a communication module  610 , and an authentication module  612 . Also, the base station  600  may include one or more hardware or software defined radios  614 ( 1 ),  614 ( 2 ), . . . ,  614 (N). The base station  600  may include a propulsion module  616 , and in some instances, the base station  600  may be deployed in a vehicle (e.g., a UAV) such that the base station  600  may not include the propulsion module  616 . Also, the base station  600  includes processor(s)  618 , a removable storage  620  and non-removable storage  622 , input device(s)  624 , output device(s)  626 , and transceiver(s)  628 . 
     In various embodiments, memory  604  is volatile (such as RAM), non-volatile (such as ROM, flash memory, etc.) or some combination of the two. The filtering module  606 , the location module  608 , the communication module  610 , and the authentication module  612  stored in the memory  604  can comprise methods, threads, processes, applications or any other sort of executable instructions. The filtering module  606 , the location module  608 , the communication module  610 , and the authentication module  612  can also include files and databases. 
     In some embodiments, the filtering module  606  can include functionality to filter received signals to distinguish between a target user equipment (e.g., the UE  110 ) and a third party user equipment (e.g., the UE  124 ). For example, the filtering module  606  can receive an identifier associated with the target UE and can compare received signals or information associated with UEs encountered by the base station  600  to identify the target UE. 
     In some embodiments, the location module  608  can include functionality to determine a location of the base station  600  and/or to determine a location of user equipment encountered by the base station  600 . For example, the location module  608  can receive location information from a GPS sensor (global positioning system) included in the base station  600 . In some instances, the location module can correlate a location of the base station  600  with a reception of a signal from a UE and a direction of travel of the base station  600  to triangulate a location of the UE. In some instances, the location module  608  can transmit a location of the base station  600  to another base station, or receive a location of another base station, in conjunction with determining a location of a user equipment. In some instances, the location module  608  can store locations of third party UE and/or searcher UE encountered in a search (e.g. where the base station  600  is deployed on a UAV) to return to a location associated with the UE. 
     In some embodiments, the communication module  610  can include applications, indications, or instructions to facilitate communication with a UE connected to the base station  600 . For example, when the base station  600  encounters a target UE, the communication module  610  can act as an intermediary between the target UE and a fixed base station (e.g., the base station  102 ) if such a connection is available. In some instances, the communication module  610  can relay instructions to a target UE (e.g., “stay put”) and in some instances, the communication module  610  can query a target UE (e.g., “are you a lost hiker?”, “press ‘1’ if you need help”, etc.). 
     In some embodiments, the authentication module  612  can include encryption or access codes to enable the base station  600  to provide alerts and/or instructions to various UE or wirelessly enabled devices. For example, the authentication module  612  may include an encryption key to encrypt instructions to ensure that instructions provided to a wirelessly enabled device are valid instructions, or to ensure that an event indication (e.g., of an imminent tsunami) is a valid event indication. 
     In some embodiments, the radios  614 ( 1 ),  614 ( 2 ), . . . ,  614 (N) (collectively referred to as radios  614 ) can include functionality to transmit and/or receive a plurality of wireless signals using any wireless protocols. For example, the radios  614  can implement one or more technologies including 2G, 3G, 4G, LTE, BLUETOOTH, BLUETOOTH LOW ENERGY, LORAWI-FI, WIRELESSHD, WIGIG, Z-WAVE, ZIGBEE, AM/FM, RFID, NFC, satellite radio, satellite phone, etc. Thus, the radios  616  can implement GSM, UMTS, and/or LTE/LTE Advanced telecommunications technologies using terrestrial or satellite transceivers. Further, the base station  600  can provide network functionality including, but not limited to those provided by the following devices: base transceiver stations BTSs (e.g., NodeBs, Enhanced-NodeBs), Radio Network Controllers (RNCs), serving GPRS support nodes (SGSNs), gateway GPRS support nodes (GGSNs), proxies, a mobile switching center (MSC), a mobility management entity (MME), a serving gateway (SGW), a packet data network (PDN) gateway (PGW), an evolved packet data gateway (e-PDG), or any other data traffic control entity configured to communicate, convert, and/or route data packets between network nodes, devices, the centralized server  102 , and/or remote devices in other networks. Further, it is understood in the context of this disclosure that the techniques discussed herein can also be implemented in other networking technologies, such as nodes that are part of a wide area network (WAN), metropolitan area network (MAN), local area network (LAN), neighborhood area network (NAN), personal area network (PAN), or the like. 
     In some embodiments, the propulsion module  616  can include functionality to navigate the base station  600  as an unmanned aerial vehicle (UAV) or as an autonomous or remotely operated vehicle. For example, the propulsion module  616  can include one or more power sources, motors, propellers, control and navigation systems, etc., to implement the base station  600  as deployable platform. In some instances, the base station  600  may not include the propulsion module  616 , and may instead by deployed on another platform such as a UAV, a vehicle, a boat, a fixed-wing aircraft, a balloon, etc. 
     In some embodiments, the processor(s)  618  is a central processing unit (CPU), a graphics processing unit (GPU), or both CPU and GPU, or other processing unit or component known in the art. 
     The base station  600  also includes additional data storage devices (removable and/or non-removable) such as, for example, magnetic disks, optical disks, or tape. Such additional storage is illustrated in  FIG. 6  by removable storage  620  and non-removable storage  622 . Tangible computer-readable media can include volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules, or other data. Memory  604 , removable storage  620  and non-removable storage  622  are all examples of computer-readable storage media. Computer-readable storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile discs (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by the base station  600 . Any such tangible computer-readable media can be part of the base station  600 . 
     The base station  600  can include input device(s)  624 , such as a keypad, a cursor control, a touch-sensitive display, image sensors (e.g., to identify a hiker), GPS receiver, etc. Also, the base station  600  can include output device(s)  626 , such as a display, speakers, etc. These devices are well known in the art and need not be discussed at length here. 
     As illustrated in  FIG. 6 , the base station  600  can include one or more wired or wireless transceiver(s)  628 . In some wireless embodiments, to increase throughput, the transceiver(s)  628  can utilize multiple-input/multiple-output (MIMO) technology. The transceiver(s)  628  can be any sort of wireless transceivers capable of engaging in wireless, radio frequency (RF) communication. In some instances, the transceiver(s)  628  may operate in conjunction with or instead of the radios  614  to provide the wireless communication using a plurality of wireless protocols. 
       FIG. 7  illustrates an example centralized server  700  configured to interact with a tactical wireless base station. In some embodiments, the centralized server  700  can correspond to the centralized server  502  of  FIG. 5 , and may be used to implement the various operations described in connection with  FIGS. 1-5 . It is to be understood in the context of this disclosure that the centralized server  700  can be implemented as a single device or as a plurality of devices with modules and data distributed among them. For example, the centralized server may include memory  702  storing a dispatch module  704 , a user equipment identifier module  706 , an alert module  708 , and a command module  710  to support the tactical wireless base station to identify user equipment and provide alerts and commands, as described herein. Also, the centralized server  700  includes processor(s)  712 , a removable storage  714  and non-removable storage  716 , input device(s)  718 , output device(s)  720 , and transceiver(s)  722 . 
     In various embodiments, memory  702  is volatile (such as RAM), non-volatile (such as ROM, flash memory, etc.) or some combination of the two. The dispatch module  704 , the user equipment identifier module  706 , the alert module  708 , and the command module  710  stored in the memory  702  can comprise methods, threads, processes, applications or any other sort of executable instructions. The dispatch module  704 , the user equipment identifier module  706 , the alert module  708 , and the command module  710  can also include files and databases. 
     In particular, the dispatch module  704  can include functionality for dispatching or deploying one or more tactical base stations to identify user equipment, provide indications of events, and provide instructions to wirelessly enabled devices. The dispatch module  704  may receive a last-known location of a hiker (e.g., via trip plans or by checking call logs to determine a last base station in contact with the user equipment) or may include receiving an intended destination of a hiker. The dispatch module  704  can provide a navigation route for a UAV to travel and perform operations as described herein, and/or the dispatch module can determine a number of tactical base stations to be deployed as handheld devices. The dispatch module  704  can coordinate movement or communication between the various tactical base stations that are deployed in an area. 
     The user equipment identifier module  706  can include functionality to receive information partially or uniquely identifying a user equipment to be found. For example, the user equipment identifier may include an international mobile station equipment identity (IMEI), an international mobile subscriber identity (IMSI), a mobile identification number (MIN), a mobile subscription identification number (MSIN), electronic serial number (ESN), media access control address (MAC address), Internet protocol address (IP address), wireless protocol address such as a BLUETOOTH address, etc. In some instances, the identifier may be received at a centralized server and provided to a tactical wireless base station deployed on an unmanned aerial vehicle  114 . 
     The alert module  708  can include functionality to receive alerts (e.g., from a weather service, police department, fire department, etc.) and configure the alerts to be deployed to the tactical wireless base stations and user equipment. The alert module  708  can set a geolocation defining an area in which user equipment may receive an alert. For example, particular alerts may be more relevant in one region than another (e.g., a coastline for a tsunami alert). In some instances, the alert module  708  can include a database that tracks aspects of the user equipment (e.g., an identity) that receive the alerts. 
     The command module  710  can include functionality to receive, determine, and distribute commands for wirelessly enabled devices to tactical wireless base stations for implementation as described herein. For example, the command module  710  can determine navigation instructions that can be deployed to an autonomous vehicle. In another example, the command module  710  can determine to open or close a valve for a wirelessly controlled valve (e.g., on a gas line). In some instances, the command module  710  can include a database including any capabilities of devices, as well as an interface for implementing the commands based on the capabilities. 
     In some embodiments, the processor(s)  712  is a central processing unit (CPU), a graphics processing unit (GPU), or both CPU and GPU, or other processing unit or component known in the art. 
     The centralized server  700  also includes additional data storage devices (removable and/or non-removable) such as, for example, magnetic disks, optical disks, or tape. Such additional storage is illustrated in  FIG. 7  by removable storage  714  and non-removable storage  716 . Tangible computer-readable media can include volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules, or other data. Memory  702 , removable storage  714  and non-removable storage  716  are all examples of computer-readable storage media. Computer-readable storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile discs (DVD), content-addressable memory (CAM), or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by the centralized server  700 . Any such tangible computer-readable media can be part of the centralized server  700 . 
     The centralized server  700  also can include input device(s)  718 , such as a keypad, a cursor control, a touch-sensitive display, voice input device, etc., and output device(s)  720  such as a display, speakers, printers, etc. These devices are well known in the art and need not be discussed at length here. 
     As illustrated in  FIG. 7 , the centralized server  700  also includes one or more wired or wireless transceiver(s)  722 . For example, the transceiver(s)  722  can include a network interface card (NIC), a network adapter, a LAN adapter, or a physical, virtual, or logical address to connect to the tactical wireless base stations  600  or the base station  102 , for example. To increase throughput when exchanging wireless data, the transceivers  722  can utilize multiple-input/multiple-output (MIMO) technology. The transceiver(s)  722  can comprise any sort of wireless transceivers capable of engaging in wireless, radio frequency (RF) communication. The transceivers  722  can also include other wireless modems, such as a modem for engaging in communications using wireless protocols such as WI-FI, WIMAX, BLUETOOTH, or infrared communication. 
       FIGS. 1-4 and 8  illustrate example processes in accordance with embodiments of the disclosure. These processes are illustrated as logical flow graphs, each operation of which represents a sequence of operations that can be implemented in hardware, software, or a combination thereof. In the context of software, the operations represent computer-executable instructions stored on one or more computer-readable storage media that, when executed by one or more processors, perform the recited operations. Generally, computer-executable instructions include routines, programs, objects, components, data structures, and the like that perform particular functions or implement particular abstract data types. The order in which the operations are described is not intended to be construed as a limitation, and any number of the described operations can be combined in any order and/or in parallel to implement the processes. 
       FIG. 8  illustrates an example process  800  for deploying a tactical wireless base station to locate a target user equipment. The example process  800  can be performed by a tactical wireless base station (e.g., the base station  600 ) deployed on the UAV  114 , for example. Further, the example process  800  can be performed by a tactical wireless base station (e.g., the base station  600 ) deployed in a handheld unit, such as illustrated in  FIG. 2 . Further, some or all of the process  800  can be performed by one or more components in the environment  500 . 
     At  802 , the operation can include receiving an identifier corresponding to a target user equipment. In some examples, the identifier may include international mobile station equipment identity (IMEI), an international mobile subscriber identity (IMSI), a mobile identification number (MIN), a mobile subscription identification number (MSIN), electronic serial number (ESN), media access control address (MAC address), Internet protocol address (IP address), wireless protocol address such as a BLUETOOTH address, etc. In some instances, the identifier may be received at a centralized server and provided to a tactical wireless base station deployed on an unmanned aerial vehicle  114  or deployed as a handheld device. 
     At  804 , the operation can include deploying a tactical base station in a target area. In some instances, this operation may include coupling the tactical base station with the UAV  114 , for example, or including the tactical base station with searchers or rescuers. In some instances, the operation  804  may include determining a location to deploy the tactical base station (e.g., at a last known location of a missing hiker, or an area affected by or in risk of experiencing an emergency). In some instances, the operation  804  may include determining a number of tactical base stations to deploy. 
     At  806 , the operation can include scanning a plurality of channels and/or frequencies in a target area. In some instance, the tactical wireless base station may transmit and/or receive on a plurality of channels and/or frequencies in serial or parallel, to detect any number of wireless signals, as discussed herein. For example, the tactical wireless base station may scan cellular protocol(s) to search for a wireless signal of a smartphone of a missing hiker. 
     At  808 , the operation can include determining if the target user equipment is identified. In some instances, the operation  808  may include receiving a wireless signal associated with a user equipment. In some instances, it may be possible to determine an identity of the target UE by information contained in the wireless signal. 
     At  810 , when the target user equipment is identified (“Yes” in the operation  808 ) the operation can include locating the target user equipment. In an example where the tactical wireless base station is deployed in a UAV, the operation  810  can include instructing the UAV to alter a direction of the UAV to determine a precise location of the target UE. In some instances, this may include monitoring a received signal strength indication (RSSI) and changing a direction of the UAV and determining if the RS SI increases, which may indicate that the UAV is moving closer to the target UE, or if the RSSI decreases, which may indicate that the UAV is moving away from the target UE. In some instances (e.g., in a case with multiple antennas), the tactical wireless base station may determine a direction of the signal by comparing time differences of the received signals. In an example where multiple tactical wireless base station are deployed as handheld devices, the tactical wireless devices may communicate to determine which device can receive a signal of the target UE, which may aid in determining a location of the target UE. Determining a location of the target UE may further include determine coordinates (e.g., GPS coordinates) of the location of the target UE. 
     At  812 , the operation can include establishing a communication with the target UE (e.g., a one-way communication or a two-way communication to verify an identity of the user associated with the target UE, etc.). In some instances, this operation may include connecting the UE to a server hosted by the tactical wireless base station which includes an interface for communicating with the target UE. In some instances, this operation  812  may include conducing a voice interaction with the target UE, which may include automated speech and/or text to speech functionality from the tactical wireless base station to generate speech to interact with the target UE. In some instances, the communication may be via an application operating on the target UE, or may be a text message (e.g., an SMS/MMS) inquiring about the status and/or identity of the target UE. In some instances, the communication may be via Wireless Emergency Alerts and/or via the Commercial Mobile Alert System (e.g., the AMBER alert system). 
     At  814 , the operation can include transmitting a location of the target UE and/or messages from the target UE to one or more searching UEs and/or third party UEs. In an example where the tactical wireless base station is deployed on a UAV, the operation  814  may include the tactical wireless base station acting as an intermediary with the target UE and establishing a communication link between the target UE and a fixed base station (e.g., as illustrated in  FIG. 5 ). In some instances, the UAV may physically navigate towards searching UEs (e.g., UEs  208  of  FIGS. 2 and 5 ) to establish a communication between the tactical wireless base station and the searching UEs. In some instances, the tactical wireless base station may transmit a determined location of the target UE to the searching UEs and/or the third party UEs so that the searching UEs or the third party UEs may come to the aid of (e.g., rescue) the target UE. In some instances, the process may include determining a location of the target UE and the third party UE, and providing an indication of the distance between the third party UE and the target UE to the third party UE, as well as a direction of travel. 
     Returning to the operation  808 , if the target UE is not identified (“No” in operation  808 ), at  816 , the operation can include storing an identifier and/or location associated with the third party UE. In an example where a tactical wireless base station is deployed in a UAV, the tactical wireless base station can store locations and/or identifiers of other UEs to convey messages to after finding the target UE, so that the third party UE may provide aid to the target UE. 
     At  818 , the operation can include establishing a communication with the third party UE, which may include establishing a one-way or two way message with the third party UE to provide a message (e.g., from the centralized server  502  or from the target UE) to the third party UE and/or to request that the third party UE provide assistance to the target UE. Thus, the tactical wireless base station as described herein may facilitate in locating a target UE (such as a missing hiker) in areas without a wireless connection, and provide a location of the target UE to third party UEs so that the third party UEs may provide assistance to the target UE. 
     CONCLUSION 
     Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described. Rather, the specific features and acts are disclosed as exemplary forms of implementing the claims.