摘要:
An electronic device and a remote device cooperate to enable a display of an electronic device when a distance between the electronic device and the remote device is less than a transmit range and to disable the display when the distance is greater than the transmit range. Disabling the display of the electronic device may improve the security of data on display. Moreover, the disabling and enabling of the display may be carried out automatically, thereby possibly relieving the authorized user from logging out or powering-off the electronic device to secure the display. When the authorized user carries the remote device, the display may be enabled and disabled as the user moves relative to the electronic device. The display of the electronic device may be enabled when the electronic device and the remote device are located within a first distance and the display is disabled when the remote device is located a second distance from the remote device, wherein the second distance is greater than the first distance. For example, when the user carries the remote device, the display is enabled when the user is within a first distance from the electronic device. When the user carriers the remote device to a second greater distance from the electronic device, the display is enabled.
摘要:
Techniques are provided herein to optimize up-link transmission power from a wireless terminal to a base transceiver station in a multicarrier system. A pathloss between the wireless terminal and the base transceiver station is determined. A determination is made if the pathloss is less than or larger than a predetermined value. One or more sub-carriers are assigned to the wireless terminal based on whether the pathloss between the wireless terminal and the base transceiver station is less than or larger than the predetermined value. A power cap command signal is sent from the base transceiver station to the wireless terminal for limiting a maximum allowable power transmitted by the wireless terminal to a predetermined level based on proximity of the one or more sub-carriers to an edge of a frequency band used for up-link transmissions made by the wireless terminal.
摘要:
A method for optimizing up-link transmission power from a wireless terminal to a base transceiver station in a multi-carrier system is disclosed. The method includes steps of: determining a pathloss between the wireless terminal and the base transceiver station; assigning at least one sub-carrier to the terminal based on the pathloss between the wireless terminal and the base transceiver station; and sending a power cap command signal from the base transceiver station to the wireless terminal for limiting a maximum allowable power transmitted by the wireless terminal to a predetermined level based on proximity of the sub-carrier to an edge of a frequency band, over which the wireless terminal transmits and receives signals.