Patent ID: 8565215

Claim:
A method for detecting an interfering base station, the method comprising: receiving, by a second base station, a first downlink synchronization code in a downlink pilot time slot DwPTS of a first base station; acquiring, by the second base station, uplink data in a specified frame, determining that the second base station is an interfering base station of the first base station if data matched with the first downlink synchronization code exists in the uplink data in the specified frame; and sending, by the second base station, no second downlink synchronization code in a downlink pilot time slot DwPTS of the specified frame, wherein the second downlink synchronization code is the same as the first downlink synchronization code; wherein acquiring the uplink data in the specified frame and determining that the second base station is the interfering base station comprises: acquiring, by the second base station, the uplink data in the specified frame, wherein the uplink data comprises m detecting code segments, each detecting code segment comprises n codes, m is equal to a number of codes comprised in the uplink data in the specified frame, n is equal to a number of codes comprised in the first downlink synchronization code, τ represents a sequence number of a detecting code segment, codes comprised in a τ th detecting code segment are codes from a τ th code to a (τ+n−1) th code in the uplink data, codes comprised in a (τ+1) th detecting code segment are codes from a (τ+1) th code to a (τ+1+n−1) th code in the uplink data, and 1≦τ≦m; and performing, by the second base station, correlation calculation on each detecting code segment by using the first downlink synchronization code to obtain a correlation value of each detecting code segment, and calculating, by the second base station, a correlation value peak-to-average ratio of each detecting code segment according to the correlation value of each detecting code segment, and determining that the data matched with the first downlink synchronization code is exists in the uplink data in the specified frame if a correlation value peak-to-average ratio of one of detecting code segments is greater than a correlation value peak-to-average ratio threshold.