Patent ID: 8660227

Claim:
A radio communication system, comprising: a transmitter for transmitting a plurality of synchronization signals in a predetermined transmission cycle; and a receiver having set therein in advance a reception interval for receiving the synchronization signals from the transmitter, the receiver being configured to be activated with the reception interval and to correct an error of a reference clock by detecting the synchronization signals transmitted from the transmitter; wherein the transmitter comprises: identification information assigning means for assigning a sequence number to each of the synchronization signals; and multiple-synchronization-signal transmission means for continuously transmitting the synchronization signals a plurality of times from a start time of the predetermined transmission cycle and with an interval shorter than the predetermined transmission cycle; and wherein the receiver comprises: synchronization signal detection means for receiving, after activation of the receiver, any one of the synchronization signals transmitted from the transmitter; and clock error correction means for correcting the error of the reference clock based on the sequence number assigned to the any one of the received synchronization signals.