Patent ID: 7782766
Filing Date: 2010-08-24
Classification: H04Q

Abstract:
1. A data collection system comprising a base station, at least one upstream module being directly subordinate to the base station, and at least one downstream module being directly subordinate to the upstream module, which are connected via a network, wherein: the base station includes: the upstream module includes: the downstream module includes: the second data collection request signal is transmitted to the base station simultaneously with the transmission of the second data collection request signal to the downstream module, and the base station regards the second data collection request signal as ACK for the first data collection request signal; when receiving the first data collection acknowledgement signal, the upstream module regards the first data collection acknowledgement signal as ACK for the second data collection request signal; and the second data collection acknowledgement signal is transmitted to the downstream module simultaneously with the transmission of the second data collection acknowledgement signal to the base station, and the downstream module regards the second data collection acknowledgement signal as ACK for the first data collection acknowledgement signal.