Method of detecting a jamming transmitter affecting a communication user equipment, device and user equipment and system with the user equipment

A method of detecting a jamming transmitter, affecting a communication user equipment, wherein

• said communication user equipment is configured for communication with a component of a cellular code division multiple access based radio network having a number of user equipments and a number of base node stations, and
• wherein the cellular radio network provides a synchronization channel for synchronization of the user equipment to a base node of the cellular radio network,
• wherein the method comprises the steps of:
• indicating that the communication user equipment is capable of communicating in the cellular radio network by means of a communication indicator indicating at least one of:
• a) the communication user equipment is in a cellular code division multiple access based radio network coverage area, and
• b) the communication user equipment has camped on a cell of a cellular code division multiple access based radio network;
• testing a match of a uniform synchronization signal sequence of the synchronization channel for detecting the synchronization channel wherein the synchronization channel is a primary synchronization channel for identifying onset of a radio frame, and wherein a matching filter for a uniform synchronization signal sequence of the primary synchronization channel is provided;
• detecting a power indicator indicative of an unbiased wide band power of a received radio signal strength and comparing the power indicator to a noise floor threshold;
• and
• indicating a jamming affection of the communication user equipment when
• the communication indicator is set, and
• the uniform synchronization signal sequence of the synchronization channel is not matched in the test, and
• the power indicator exceeds the noise floor threshold.