The invention discloses an LTE (Long Term Evolution) interference method and an LTE interference
system based on synchronization signals, which mainly comprises two schemes. According to the two schemes, 1) a shielding
system does not need to be synchronized with a
base station, that is, the shielding
system searches frequency point information in a shielded area and sends one or more groups of PSS (Primary
Synchronization Signal) or
SSS (Secondary
Synchronization Signal) interference signals by a certain frequency at or near a frequency point position where LTE signals main exist; and 2) synchronization information of the
base station needs to be acquired, that is, frequency point information of the
base station in the shielded area is searched, PSSs and SSSs sent by the base
station are received, the shielding system is enabled to realize synchronization with the base
station, and frame timing information and
physical layer cell identity of a
cell are acquired; the shielding system generates one or more groups of PSS or
SSS interference signals according to the acquired
physical layer cell identity; and the shielding system sends one or more groups of interference signals in a
specific time-
frequency domain range. The method and the system provided by the invention are low in transmitting power, and have no influences for the health of a
human body. Meanwhile, the method and system do not affect an
uplink channel and apply no interference to users in an unshielded area.