Abstract: Disclosed herein is a method for determining network parameters. The method includes receiving factory equipment traffic information, unlicensed frequency characteristic information, and factory equipment characteristic information and determining network parameters by taking into account at least one of the factory equipment traffic information, the unlicensed frequency characteristic information, or the factory equipment characteristic information, or a combination thereof, and the network parameters may include at least one of channel access parameters, unlicensed bands/channels, or client grouping, or a combination thereof.

Abstract: A connection apparatus for a waterway pipe is disclosed, which includes a plurality of pipes each having both ends which are connected in series, a coupler having protruded both ends and a connection member having a plurality of connection grooves for surrounding the connection portions of the pipes, an engaging member which passes through the connection groove, and an engaging member having one end inserted into the connection groove and the other end contacting with one side of the connection member, so that the coupling member moves backwardly and forward by a rotation force of the engaging member, and the coupler is tightened and loosened.