Electric energy meter broadcast upgrading method

The invention discloses an electric energy meter broadcast upgrading method. The method comprises the following steps: counting transmission performance data issued by unicast and broadcast; an upgrade cache matrix is initialized and used for recording the receiving condition of each data packet in each electric energy meter; determining data packets to be issued in the round and an issuing mode of each data packet according to the transmission performance data and the upgrade cache matrix; executing the issuing of the current round of data packet, and updating the upgrade cache matrix; and determining whether all the electric energy meters are upgraded or not according to the current value of the upgrading cache matrix, and if not, repeating the next round of data packet issuing. According to the method, the upgrading cache matrix is constructed to record the receiving condition of each electric energy meter, the upgrading strategy is dynamically adjusted according to the real-time value of the upgrading cac