Abstract: A communication device is provided. The communication device includes a measurement device and a controller. The measurement device is configured to measure operation parameters and noise parameters corresponding to Wi-Fi channels used by the communication device. In response to the controller determining that a wireless transmitter/receiver unit (WTRU) is to connect to the communication device, the controller calculates a signal-to-noise ratio and a user ratio corresponding to each Wi-Fi channel according to the operation parameters and noise parameters, and calculates a congestion traffic value corresponding to each Wi-Fi channel according to the signal-to-noise ratio and the user ratio of each Wi-Fi channel. The controller selects a first Wi-Fi channel having the smallest congestion traffic value from among the plurality of Wi-Fi channels to communicate with the WTRU.

Abstract: An elliptical machine includes: a transmission mechanism disposed a the base, one end of the lateral swing track disposed on both sides is pivoted at the base, and each lateral swing track can swing laterally; a connecting rod and a stepping mechanism are disposed on both sides of the transmission mechanism, and the front end of the front connecting rod in each mechanism is pivotally connected to the base; a front end is connected to the rear connecting rod of the front connecting rod in a universal joint type, the rear connecting rod is disposed on the corresponding track; the rear connecting rod free end part is pivoted to the pedal. When the pedal is stepped on, the front connecting rod is reciprocally extended with the transmission mechanism, and the user can freely manipulate the swing angle of the lateral swing track through the lateral force applied to the pedal.

Abstract: A communication device is provided. The communication device includes a measurement device and a controller. The measurement device is configured to measure operation parameters and noise parameters corresponding to Wi-Fi channels used by the communication device. In response to the controller determining that a wireless transmitter/receiver unit (WTRU) is to connect to the communication device, the controller calculates a signal-to-noise ratio and a user ratio corresponding to each Wi-Fi channel according to the operation parameters and noise parameters, and calculates a congestion traffic value corresponding to each Wi-Fi channel according to the signal-to-noise ratio and the user ratio of each Wi-Fi channel The controller selects a first Wi-Fi channel having the smallest congestion traffic value from among the plurality of Wi-Fi channels to communicate with the WTRU.

Abstract: An elliptical machine has a base, an upright column fixed to the base, a transmission mechanism mounted on the base, and two link mechanisms respectively connected with opposing sides of the transmission mechanism. Each link mechanism includes a first link rod that is telescopic and connected with both the transmission mechanism and the base, and a second link rod having a pedal and connected with the first link rod such that the pedals of the two link mechanisms are respectively linked to the transmission mechanism through the first and second link rods. When a user uses each pedal, a total length of the corresponding first link rod is reciprocatingly and continuously changed, so that a top end of the first link rod makes a first circulatory movement along a first elliptical path, and the corresponding pedal synchronously makes a second circulatory movement along a second elliptical path.

Abstract: An elliptical machine includes: a transmission mechanism disposed a the base, one end of the lateral swing track disposed on both sides is pivoted at the base, and each lateral swing track can swing laterally; a connecting rod and a stepping mechanism are disposed on both sides of the transmission mechanism, and the front end of the front connecting rod in each mechanism is pivotally connected to the base; a front end is connected to the rear connecting rod of the front connecting rod in a universal joint type, the rear connecting rod is disposed on the corresponding track; the rear connecting rod free end part is pivoted to the pedal. When the pedal is stepped on, the front connecting rod is reciprocally extended with the transmission mechanism, and the user can freely manipulate the swing angle of the lateral swing track through the lateral force applied to the pedal.

Abstract: An elliptical machine includes a base and an upright column fixed to the base; a transmission mechanism mounted on the base, the bases on both sides of which are respectively provided with the link mechanism connected with the transmission mechanism wherein each link mechanism includes a first link rod connected with the transmission mechanism, and a second link rod having a pedal and connected with the first link rod. The first link rod is telescopic and connected to the base. When the user uses the pedal of two link mechanisms to link the transmission mechanism through the link rods, the total length of the first link rod is reciprocatingly and continuously changed, so that the top end of the first link rod can make the circulatory movement along an elliptical path, and interlocks the second link rod, and the pedal synchronously can make the circulatory movement along an elliptical path.