Patent ID: 8705962

Claim:
A data transmission method, comprising: receiving, by a second data processing node, control information sent from a first data processing node through a preset control channel, wherein the control information comprises at least bandwidth information of a data channel for sending optical burst data and corresponds to service information of the optical burst data of the first data processing node; and controlling transmission of pending optical burst data according to the bandwidth information; wherein the controlling of the transmission of the pending optical burst data by the second data processing node according to the bandwidth information comprises: judging, by the second data processing node, whether there are idle bandwidths in the data channel within a current transmission period according to the control information; sending the pending optical burst data within the current transmission period when the judging indicates there are idle bandwidths, and buffering the pending optical burst data when the judging indicates there are no idle bandwidths, and wherein the control information includes a destination data processing node identifier of the pending optical burst data; and the method comprises: sending, by the second data processing node, the pending optical burst data to a destination data processing node corresponding to the destination data processing node identifier.