Embodiments of the present disclosure relate to methods, devices and computer readable media for communication. A method comprises determining, at a first terminal device, a time window during which a second terminal device is to filter Sidelink Reference Signal Received Power (SL-RSRP) of sidelink transmissions received from the first terminal device; receiving, from the second terminal device, the filtered SL-RSRP during the time window; estimating a sidelink path loss based on the filtered SL-RSRP; and applying the sidelink path loss to power control of at least one subsequent sidelink transmission from the first terminal device to the second terminal device. In this way, the SL path loss can be estimated more accurately and reasonably, and thus the power control based on the the SL path loss can be performed more effectively.

Systems and methods for wirelessly recording multi-track audio files. In some aspects, each performer is equipped with a local audio device capable of locally recording the respective performer's audio while also transmitting it to a master recorder. Functions of the local audio device may be adjusted remotely. The locally recorded audio may be used to repair or replace any audio lost or corrupted during transmission to the master recorder. Such repair or replacement may be performed electronically or via playback of the locally recorded audio. In other aspects, a master recorder is not required since all locally recorded audio may be combined or otherwise processed post-recording. Locally recorded audio may include identifiers to aid in post-recording identification of such audio. A multi-memory unit is provided to facilitate manipulation and processing of audio files. A method for automatically adjusting local audio device power mode based upon recorder status is also disclosed.

Systems and methods for wirelessly recording multi-track audio files. In some aspects, each performer is equipped with a local audio device capable of locally recording the respective performer's audio while also transmitting it to a master recorder. Functions of the local audio device may be adjusted remotely. The locally recorded audio may be used to repair or replace any audio lost or corrupted during transmission to the master recorder. Such repair or replacement may be performed electronically or via playback of the locally recorded audio. In other aspects, a master recorder is not required since all locally recorded audio may be combined or otherwise processed post-recording. Locally recorded audio may include identifiers to aid in post-recording identification of such audio. A multi-memory unit is provided to facilitate manipulation and processing of audio files. A method for automatically adjusting local audio device power mode based upon recorder status is also disclosed.

The present invention provides a method of determining a transmission power for device to device, D2D, transmissions between a first user equipment device and a second user equipment device using transmission resources being used for transmissions to a cellular network entity by a third user equipment device, the method comprising determining a measure of a path loss between the cellular network entity and the first user equipment device, and using the measure of the path loss to determine a maximum transmission power such that the D2D transmissions are received at the cellular network entity with a signal level around or below a noise level.

Apparatuses, methods, and systems are disclosed for power control using at least one power control parameter. One method (1600) includes receiving (1602), at a first device, a set of uplink power control parameters. The method (1600) includes determining (1604) a downlink transmit power value based on the set of uplink power control parameters. The method (1600) includes transmitting (1606) a downlink reference signal to a second device, wherein a transmit power of the downlink reference signal is set to the downlink transmit power value.

Methods and devices are provided to enable a cooperating group of user equipments (UEs) to receive a group-specific common-parameters configuration (CPC) message over a first spectrum band and access a second spectrum band synchronously for device-to-device (D2D) sidelink transmission within the group. In an embodiment, a UE operating in a cooperation mode in a cooperating group of UEs receives a group-specific common-parameters configuration (CPC) message from a transmit point (TP) over a first spectrum band, the group-specific CPC message comprising information to configure cooperating UEs in the group for synchronous clear channel assessment (CCA) and aligned sidelink transmission starting times in a second spectrum band. The UE performs a synchronous CCA in the second spectrum band in accordance with a common contention window generated based on the information in the group-specific CPC message.

A disclosure of the present specification provides a user equipment (UE). The UE may comprise a transceiver unit for transmitting and receiving a signal, and a processor for controlling the transceiver unit, wherein the processor: obtains a network signal (NS) 33; determines an additional maximum power reduction (A-MPR) on the basis of the obtained NS 33; and determines transfer power for a sidelink signal on the basis of the determined A-MPR, and the transceiver transmits the sidelink signal to another UE with the transfer power.

A radio node may transmit a signal using a transmit power. Then, the radio node may adjust the transmit power within a range of values. The adjustment may include reducing the transmit power when a spatial received signal strength indication (RSSI) metric of the radio node is greater than a first threshold value and a coverage criterion is met. Note that the spatial RSSI metric of the radio node may correspond to a set of temporal RSSI metrics of the radio node received from neighboring radio nodes. Moreover, the coverage criterion may be that less than a portion of RSSI measurements of the radio node associated with electronic devices, which are communicatively attached with the radio node, is less than a second threshold value. Alternatively, the adjustment may include increasing the transmit power when the spatial RSSI metric is less than the first threshold value.

One disclosure of the present specification provides a user equipment (UE). The UE comprises: a transceiver for transmitting a signal and receiving a signal; and a processor for controlling the transceiver, wherein the processor: obtains network signal (NS) 52; determines an additional maximum power reduction (A-MPR) configured on the basis of obtained NS 52; and determines a transmission power for a sidelink signal, on the basis of the determined A-MPR, the transceiver transmits, to another UE, the sidelink signal with the transmission power, the sidelink signal is transmitted within a band having a center frequency of 5885 MHz and a bandwidth of 40 MHz, and the A-MPR is configured on the basis of region 1, region 2, and region 3, and may be configured on the basis of QPSK, 16 QAM, 64 QAM, and 256 QAM modulation schemes.

Embodiments of this application disclose a power control method and a power control apparatus, to alleviate a transmission capacity decrease caused by interference, and improve transmission performance. The method in embodiments of this application includes: A first node determines a first power control parameter. The first power control parameter is used to indicate first transmit power expected by the first node in a first transmission mode. The first node sends a first message to a second node. The first message carries the first power control parameter, and the first message is used to request the first transmit power expected by the first node in the first transmission mode. The second node is an upper-level node of the first node or a donor base station.