Patent ID: 7953406

Claim:
An access point comprising: a plurality of antennas for dividing a cover area into a plurality of sectors; a radio portion which receives and/or transmits a radio signal through one of the antennas; a signal processing portion which executes modulation, demodulation and calling-connection processing of the radio signal; a line interface for connecting to a network; a diagnostic test terminal portion which has a transmitter and a receiver of a radio access terminal, and which transmits the radio signal to said radio portion and receives the radio signal from said radio portion; and a diagnosis control unit which controls said diagnostic test terminal portion to execute a predetermined diagnostic test of the access point thereof, where the diagnostic test is performed by said diagnosis control unit by using said diagnostic test terminal portion and said radio portion; wherein the access point further comprises: a nondirectional antenna through which said diagnostic test terminal portion catches a radio wave from an adjacent access point located nearby; a switch which connects said diagnostic test terminal portion to either of said nondirectional antenna and said radio portion; and a memory which stores a transmission destination information for transmitting failure information which contains a failing part and/or a failure content and is obtained by the diagnostic test of said diagnosis control unit, wherein after executing the diagnostic test, in accordance with the failing part as a result of the diagnostic test, (1) said diagnostic test terminal portion and said radio portion are connected by said switch, and said diagnostic test terminal portion transmits the failure information to a predetermined radio access terminal by a first path through said radio portion, said signal processing portion and said line interface, or (2) said diagnostic test terminal portion and said nondirectional antenna are connected by said switch, the diagnostic test terminal portion catches the radio wave from the second access point, which is adjacent to own access point and is located nearby, through said nondirectional antenna, and said diagnostic test terminal portion transmits the failure information to the predetermined radio access terminal by a second path, which is through said nondirectional antenna and said adjacent access point located nearby, using radio wave between said nondirectional antenna and said adjacent access point located nearby, wherein the first path or the second path in which any failure is not detected is used.