The present invention discloses a method, an apparatus and a system for implementing the conference service. The receiving wireless device estimates a channel response based upon the preamble sequence and then determines an estimated transmitter beamforming unitary matrix based upon the channel response and a receiver beamforming unitary matrix. The invention further relates to hybrid soybean seeds and plants produced by crossing the cultivar 0004747 with another soybean cultivar. The client apparatus executes the applet to transmit to the public server section an or the control instruction inquiry similar to those the programmable display apparatus makes. When the cache memory is re-enabled or when the temporary use completes, optionally andor selectively, the tag portion is repopulated from the archive, and the data portion is re-fetched according to the repopulated tag portion.