LTE-A(Long Term Evolution-Advanced) is a mobile communication standard based on the enhancement of Long Term Evolution(LTE). The rapid development of LTE-A,with a growing base of users,makes it a potential and promising target for covert channels. In this paper,we propose a novel and robust timing covert channel,called TCCBL,designed for LTE-A systems. This method leverages both the SN(Sequence Number) field in the header of PDU(Packet Data Unit) and Padding bits in the payload of PDU. Specifically, we utilize a pre-shared hash function and an independent variable parameter to achieve varying ...
