1. A wireless communication device, comprising:a memory holding instructions;
at least one processor configured to execute the instructions held in the memory to
determine transmission time information of communication traffic to be transmitted on a target unlicensed frequency band; and
generate indication information indicating the transmission time information, wherein the indication information includes an indication of an amount of time needed to transmit a remaining amount of the communication traffic, wherein
the at least one processor is further configured to embed the indication information into a broadcast subframe for coordination with another communication device.