Abstract:
Communications are established between a base station and a mobile unit. The mobile unit analyzes the content of at least some information received from the base station relating to neighboring cells. When the analyzing indicates that the base station is a cloned base station, a warning is initiated to the user.
Abstract:
A signal on a wireless communication system control channel can be identified as authentic or malicious by monitoring control channel signal strength changes. When a control channel signal level increases abnormally fast or too quickly, i.e., above a threshold value rate of increase, the control channel signal is identified as likely being from a malicious source, such as a jamming transmitter.
Abstract:
Communications are established and conducted between a communication and jamming detection at a vehicle and a base station. At the communication and jamming detection device, a determination is made as to when jamming of the communications between the communication and jamming detection device and the base station is occurring. When jamming is determined to be occurring, at least one location determination signal is transmitted from the communication and jamming detection device to at least one external tracking device. At the at least one external location determination device, the at least one location determination signal is received from the communication and jamming detection device. The location of the communication and jamming detection device at the vehicle is determined from the at least one location determination signal.
Abstract:
A signal on a wireless communication system control channel can be identified as authentic or malicious by monitoring control channel signal strength changes. When a control channel signal level increases abnormally, a geographic location is obtained from a navigation system, such as a GPS. The determined location is compared to locations in a data base of locations where control channel jamming transmitters are known to exist, and/or likely to exist. If the then-current location is not in the data base, the detected control channel signal level increase is considered to be malicious, i.e., from a jamming transmitter, often used by car thieves.
Abstract:
The jamming of a radio frequency (RF) transmission after the vehicle is parked is detected. When the jamming is detected, an emergency message is broadcast on a first random access channel (RACH) associated with the vehicle according to a last known broadcast channel (BCH). When the jamming is detected, at least one last known neighbor serving cell from a stored data structure is determined, and the emergency message is broadcast on one or more second RACHs associated with each of the at least one last known neighbor serving cells.
Abstract:
Location determination signals are received and a location of interest is determined from the location determination signals. A communication service is established and synchronized with a known, valid base station via a first communication channel. A value of a signal strength indicator associated with the first communication channel is monitored. When the value of the signal strength indicator falls below a threshold level, a warning message is transmitted to the known, valid base station before synchronization of the communication service is lost with the known, valid base station.
Abstract:
Communications are established and conducted between a communication and jamming detection at a vehicle and a base station. At the communication and jamming detection device, a determination is made as to when jamming of the communications between the communication and jamming detection device and the base station is occurring. When jamming is determined to be occurring, at least one location determination signal is transmitted from the communication and jamming detection device to at least one external tracking device. At the at least one external location determination device, the at least one location determination signal is received from the communication and jamming detection device. The location of the communication and jamming detection device at the vehicle is determined from the at least one location determination signal.
Abstract:
A system for controlling a network access device is provided. The system includes a processor, the network access device, and a control circuit. The processor being in communication with the network access device through a communication link. The control circuit monitoring a temperature of the network access device and activating or deactivating the network access device based on the temperature.
Abstract:
Communications are established with a first base station and the communications include first validation information associated with the first base station. Second validation information is obtained and the second validation information is stored in a data structure. The second validation information is associated with a second and valid base station. The first validation information is compared to the second validation information stored in the data structure and it is determined whether the first base station is valid based upon the comparison. When the comparing indicates that the first base station is not valid, a warning is initiated to a user.
Abstract:
A signal on a wireless communication system control channel can be identified as authentic or malicious by monitoring control channel signal strength changes. When a control channel signal level increases abnormally, a geographic location is obtained from a navigation system, such as a GPS. The determined location is compared to locations in a data base of locations where control channel jamming transmitters are known to exist, and/or likely to exist. If the then-current location is not in the data base, the detected control channel signal level increase is considered to be malicious, i.e., from a jamming transmitter, often used by car thieves.