Random access method of spread-spectrum self-organizing network

The invention provides a random access method for a spread-spectrum self-organized network. In the method, newly arrived packets and packets that need to be re-transmitted are cached in a packet queue waiting to be sent by network nodes; then the packets are sent to target nodes according to preset sending frequency and transmission power; after receiving the packets, the target nodes reply in respect of the confirmed packets; if the network nodes receive the confirmed packets, a new packet is taken from the packet queue waiting to be sent for sending, or the packet is put back to the packet queue waiting to be sent to be retransmitted. In the method, the preset sending frequency is controlled by a random-number generator, and the read-out value of the preset transmission power depends onspecific network parameters. While keeping relatively high transmission efficiency for the packets, the random access method for a spread-spectrum self-organized network of the invention reduces multiuser interference power,