Abstract: A method of wireless signal transmission management includes transmitting a plurality of data packets to tethering equipment from user equipment to tethering equipment, determining a size of each of the plurality of data packets by the tethering equipment, designating data packets of the plurality of data packets having a specific range of sizes as control signal packets by the tethering equipment, and prioritizing in transmitting the control signal packets to a cellular network by the tethering equipment.

Abstract: A bushing of a bearing and a toothed loop for a variable speed bicycle comprises at least one dove-tail recess and dove-tail retaining projection fixed on two sides of a metal piece respectively; the toothed loop including a small-diameter hole disposed on a central portion thereof, the small-diameter hole including a large-diameter groove mounted on an upper side of the toothed loop, the large-diameter annular groove including plural teeth formed therearound; wherein the dove-tail recess includes two first titled surfaces arranged on two sides thereof individually, the dove-tail retaining projection includes two second titled surfaces arranged on two sides thereof individually, the metal piece is twisted to form a hollow cylinder so that the dove-tail recess and the dove-tail projection are connected together, and then they are engages with each other by using the first and second titled surfaces; the toothed loop is rejection molded from non-metal composite material.