Some aspects of this disclosure include apparatuses and methods for implementing transmission power control. Some aspects relate to an electronic device including a transceiver configured to communicate with a second electronic device and a processor communicatively coupled to the transceiver. The processor is configured to receive an identification information of the second electronic device and receive, from the second electronic device, at least one of a plurality of feedback signals. The plurality of feedback signals includes a first feedback signal generated based on a link quality query from the electronic device and a second feedback signal including an encoded channel status information embedded within an acknowledgment (ACK) frame from the second electronic device. Based on the received identification information and the at least one of the plurality of feedback signals, the processor is configured to adjust transmission power of a signal to be transmitted to the second electronic device.

A method for power allocation in a dAP may comprise: when a change cycle of a transmit power determination vector arrives, generating an uplink message including long-term CSI, the uplink message being normalized such that the long-term local CSI becomes a value within a preconfigured limit range; transmitting the uplink message to a central processing unit through a fronthaul; receiving a downlink message vector for power allocation from the central processing unit through the fronthaul; generating decentralized determination information using the downlink message vector; and extracting a transmit power determination vector based on the decentralized determination information.

An electronic device may include wireless circuitry that is configured to transmit wireless signals during operation. A maximum transmit power level may be established that serves as a cap on how much power is transmitted from the electronic device. Adjustments may be made to the maximum transmit power level in real time based on sensor signals and other information on the operating state of the electronic device. The sensor signals may include motion signals from an accelerometer. The sensor signals may also include ultrasonic sound detected by a microphone. Device orientation data may be used by the device to select whether to measure the ultrasonic sound using a front facing or rear facing microphone. Maximum transmit power level may also be adjusted based on whether or not sound is playing through an ear speaker in the device.

A radio communication apparatus according to one embodiment is mounted on a vehicle (V), configured to perform vehicle-to-vehicle communication with another vehicle by using a predetermined frequency band. The radio communication apparatus comprises a controller configured to control a transmission power and/or a transmission directivity in the vehicle-to-vehicle communication to restrain generation of interference in the predetermined frequency band, based on a congestion situation parameter regarding a congestion situation of a road (R) on which the vehicle travels.

Systems and methods are disclosed for providing a radio operation switch based on mobility data. In one embodiment, a mobile base station is disclosed, comprising: a global positioning system (GPS) module for determining a current location of the mobile base station; a velocity module coupled to the output of the GPS module for determining a current velocity of the mobile base station; and a controller, the controller configured to perform steps comprising: determining the current velocity of the mobile base station using the velocity module; comparing the current velocity to a threshold; and switching, based on the comparison, from a first radio band to a second radio band.

This disclosure relates to a method for reducing power consumption of a first device for use in a wireless communication system. The first device receives a signal within a first reference sub-frame of a radio channel. The device determines whether to use the signal for obtaining channel state information to be reported to a second device within a reporting sub-frame, or whether to receive and use a second signal within a second reference sub-frame of the radio channel for obtaining channel state information to be reported to the second device within said predetermined later sub-frame. Based on this determination, the first device reports channel state information obtained based on the signal received within said first reference sub-frame or said second signal within said second reference sub-frame to the second device within said reporting sub-frame.

Methods and apparatus for determining a transmit antenna gain and a spatial mode of a wireless device (100) are disclosed. The apparatus (100) includes a main receive antenna (112) associated with a first receive signal strength, a diversity receive antenna (114) associated with a second receive signal strength, and a transmit antenna (116). Each of the antennas (112, 114, and 116) is operatively coupled to a controller (102). The controller (102) determines (i) a difference between the first receive signal strength and the second receive signal strength, (ii) a correction factor based on the difference, and (iii) the transmit antenna gain based on the correction factor. In addition, the difference between the first receive signal strength and the second receive signal strength may be used, along with other sensor data (e.g., accelerometer), to estimate the spatial mode (e.g., orientation and hand grip) of the device (100). This spatial mode estimation may be then be used, among other things, to more accurately determine transmit antenna gain.

Systems and methods for an in-vehicle base station are described. In one embodiment, a method is disclosed, comprising: broadcasting, using the first access radio, the cellular access network at a first power; transmitting the location of the mobile base station to the cellular network; detecting, at the processor, a transition of the mobile base station from a stationary state to a moving state; reducing, at the first access radio, a transmit power of the cellular access network while in the moving state for disabling the cellular access network outside the vehicle; and increasing, at the first access radio, the transmit power of the mobile base station when exiting the moving state.

Systems and methods for an in-vehicle base station are described. In one embodiment, a method is disclosed, comprising: permitting a mobile device to attach to the mobile base station; attaching, at the mobile base station, to a macro cell for providing backhaul to the mobile device using the mobile base station for access; receiving a first tracking area code from the macro cell; transmitting a second tracking area code to the mobile device, the second tracking area code corresponding to a tracking area managed by a coordinating node; detecting, at the mobile base station, a transition from a stationary state to a moving state of the mobile base station; and sending a tracking area update message to a core network to transition to the tracking area managed by the coordinating node.

The embodiment of the present document discloses a method for improving downlink transmission power. The method includes: when a network side network element determines that a downlink subframe in a radio frame is an almost blank subframe, assigning a maximum value among numerical values corresponding to a user level parameter to the user level parameter, and assigning a maximum value among numerical values corresponding to a cell level parameter to the cell level parameter; and determining downlink transmission power according to the user level parameter value and the cell level parameter value. The embodiment of the present document further discloses a network side network element for improving downlink transmission power and a storage medium.