A receiver bandwidth adaptation for radio access technologies (RATs) may be for a New Radio (NR) or 5G flexible RAT. A WTRU control channel {e.g., receiver) bandwidth may change, for example, based on monitoring a downlink channel for an in indication using a bandwidth (BW) associated with a first BW configuration. The indication may include a signal to change the receiver BW. The WTRU may change the receiver BW associated with the first BW configuration to a second BW configuration when the WTRU receives the indication on a downlink (DL) channel. The WTRU may perform one or more measurements associated with the second BW configuration in response to the change of the receiver BW to the second BW configuration. The WTRU may transmit measurement information to a network entity. The WTRU may receive a DL transmission from the network using the second BW configuration.

A wireless device receives a first downlink control information (DCI) scheduling a physical downlink shared channel (PDSCH). The first DCI comprises a feedback timing indicator field. In response to the feedback timing indicator field indicating not to transmit a feedback for the PDSCH before receiving a second DCI, a discontinuous reception (DRX) timer is started with a first value. A downlink control channel is monitored for the second DCI while the DRX timer is running.

Provided are a power adjustment method and apparatus for an unlicensed spectrum, and a terminal device and a network device. The method comprises: a terminal device adjusting, in a first transition period, a transmission power from turning-off to turning-on for a target transmission, wherein the first transition period and a first gap at least partially overlap in a time domain, the first gap comprises the length of time between an end moment of a first transmission and a start moment of the target transmission, and the first transmission is the most recent transmission before the target transmission.

The present invention relates to an adaptive medical image transmission device and method which consider communication state and residual power. The adaptive medical image transmission method induces an image receiving device to post-process a result of medical image processing performed by a medical image transmission device by: receiving medical image data by means of a probe; sensing communication throughput indicative of a communication state between the image transmission device and the image receiving device; variably determining a data rate required to transmit data on the basis of a preset data rate based on the sensed communication throughput; performing medical image processing by selecting a signal path which satisfies the determined data rate with respect to the medical image data; and transmitting the result of the medical image processing to the image receiving device according to the determined data rate.

The present invention discloses a data transmission method and apparatus. The method includes: generating, by the primary access point, spatial reuse transmission signaling, the spatial reuse transmission signaling is used to indicate a reuse transmission device of the spatial reuse link to perform data transmission based on the spatial reuse link according to the spatial reuse transmission signaling; sending, by the primary access point, the spatial reuse transmission signaling. According to the data transmission method and apparatus in embodiments of the present invention, mutual interference between the primary link and the spatial reuse link during data transmission can be reduced, and transmission quality can be improved.

The present invention discloses a data transmission method and apparatus. The method includes: generating, by the primary access point, spatial reuse transmission signaling, the spatial reuse transmission signaling is used to indicate a reuse transmission device of the spatial reuse link to perform data transmission based on the spatial reuse link according to the spatial reuse transmission signaling; sending, by the primary access point, the spatial reuse transmission signaling. According to the data transmission method and apparatus in embodiments of the present invention, mutual interference between the primary link and the spatial reuse link during data transmission can be reduced, and transmission quality can be improved.

A method for protecting a user equipment includes: after sending a first request message for adjusting radio link configuration to a base station, monitoring a response message corresponding to the first request message in a first preset time period; determining a sending time for sending a second request message for adjusting the radio link configuration based on a monitoring result in the first preset time period; and sending the second request message at the sending time. This can avoid frequently sending a request message for adjusting a radio link configuration to a base station, reducing spectrum resource utilization and signaling burden of the network.

A device and a method for mixed mode communication are disclosed. For example, a Bluetooth master device transmits data packets to a Bluetooth slave device and receives acknowledgments from the Bluetooth slave device, by controlling a transceiver to transmit the data packets based on a Bluetooth Basic Rate/Enhanced Data Rate (BR/EDR) protocol, and to receive the acknowledgements packet (ACK) based on a Bluetooth Low Energy (BLE) protocol. In another example, a Bluetooth slave device receives the data packets from a Bluetooth master device and transmits acknowledgments to the Bluetooth master device, by controlling a transceiver to receive the data packets based on a BR/EDR protocol, and to transmit the ACK based on a BLE protocol.

A user equipment includes circuitry which selects a random access preamble sequence, and a transmitter which transmits the random access preamble sequence to a base station in a frequency bandwidth of an unlicensed band, and performs at least one of a first operation and a second operation. In the first operation, the circuitry selects a first sequence as the random access preamble sequence, the first sequence having a length longer than a length of a random preamble sequence used for a licensed band, and the transmitter transmits the first sequence in the frequency bandwidth of the unlicensed band. In the second operation, the circuitry selects a second sequence as the random access preamble sequence, the second sequence having a length equal to the length of a random preamble sequence used for the licensed band, and the transmitter transmits the second sequence with repetitions in the frequency bandwidth of the unlicensed band.

A user equipment includes circuitry which selects a random access preamble sequence, and a transmitter which transmits the random access preamble sequence to a base station in a frequency bandwidth of an unlicensed band, and performs at least one of a first operation and a second operation. In the first operation, the circuitry selects a first sequence as the random access preamble sequence, the first sequence having a length longer than a length of a random preamble sequence used for a licensed band, and the transmitter transmits the first sequence in the frequency bandwidth of the unlicensed band. In the second operation, the circuitry selects a second sequence as the random access preamble sequence, the second sequence having a length equal to the length of a random preamble sequence used for the licensed band, and the transmitter transmits the second sequence with repetitions in the frequency bandwidth of the unlicensed band.