A constant contact side bearing assembly for a railcar includes a housing having a base, a pair of mounting apertures formed through a thickness of the base, a generally cylindrical housing wall upstanding on the base, a pair of diametrically opposed channels, a pair of diametrically opposed openings and a guide member disposed centrally on and upstanding from an inner surface of the base. The method comprises: receiving a rank reported by a user equipment; determining a rank at least partly based on a transmission block size, TBS, index generated from link adaptation decision; and overriding the reported rank with the determined rank. This system also includes a detection subsystem configured to separately detect the light focused to the spatially separated positions in the image plane. The thermocouple junctions are connected in series and produce a signal indicative of the level of liquid along the sensor. Excellent image rejection is provided by decreasing an amplitude error and a phase error of an output IF signal in differential form. The noise shield pattern is formed in a symmetrical shape, and the connecting lines connect the noise shield pattern and the defogger symmetrically at center position and symmetrical positions about the center position in right-and-left direction of the noise shield pattern and the defogger.