An apparatus and a method for a hybrid automatic repeat request (HARQ) feedback transmission are provided. A method for a HARQ feedback transmission includes receiving a multicast broadcast service (MBS) transport block (TB) from a base station, decoding the MBS TB, and transmitting, to the base station, a HARQ feedback in a form of a negative acknowledgement (NACK)-only report when the UE incorrectly decodes the MBS TB.

Techniques are described for interference reductions using, e.g., a Received Signal Strength Indicator (RSSI) or packet error rate threshold. User Equipment that implements these techniques may reduce interference among personal area network enabled devices, for example, with the added benefit of reducing power consumption by reduced radio frequency transmissions. By reducing interference, the performance of personal area network devices may be improved.

Techniques are described for interference reductions using, e.g., a Received Signal Strength Indicator (RSSI) or packet error rate threshold. User Equipment that implements these techniques may reduce interference among personal area network enabled devices, for example, with the added benefit of reducing power consumption by reduced radio frequency transmissions. By reducing interference, the performance of personal area network devices may be improved.

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.

This disclosure provides methods, devices and systems for sharing resources of a wireless medium. Various implementations relate generally to coordinated transmit power control for sharing time and frequency resources of a wireless medium. Particular implementations relate more specifically to coordinated access point spatial-reuse-multiple-access techniques for sharing the time and frequency resources of a transmission opportunity. According to such techniques, an access point that wins contention and gains access to the wireless medium for the duration of a transmission opportunity may limit the transmit powers of the access points selected to share the time and frequency resources such that interference from the selected access points does not prevent stations associated with the winning access point from successfully decoding packets transmitted by it.

Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for determining dynamic power sharing in a dual-uplink E-UTRA (Evolved Universal Terrestrial Radio Access)—new radio dual connectivity (EN-DC) network, and/or other new radio (NR) related networks. Various embodiments describe how to determine or configure respective transmission (TX) power levels for LTE and NR uplink signals in the dual-uplink EN-DC network. The NR uplink signal may or may not be transmitted based on a certain timeline threshold and/or power scaling threshold. Other embodiments may be described and claimed.

Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for determining dynamic power sharing in a dual-uplink E-UTRA (Evolved Universal Terrestrial Radio Access)—new radio dual connectivity (EN-DC) network, and/or other new radio (NR) related networks. Various embodiments describe how to determine or configure respective transmission (TX) power levels for LTE and NR uplink signals in the dual-uplink EN-DC network. The NR uplink signal may or may not be transmitted based on a certain timeline threshold and/or power scaling threshold. Other embodiments may be described and claimed.

A terminal including: a transmission unit that transmits a first message and a second message used in a 2-step random access procedure, the first message being transmitted via a physical random access channel and the second message transmitted via a physical uplink shared channel; and a control unit that determines a power control to be applied to the first message and the second message, according to a control based on a prioritization rule of power allocation applied to the first message or the second message, wherein the transmission unit retransmits the first message and the second message by applying the determined power control to the first message and the second message.

An electronic device is provided. The electronic device includes a first communication circuit that supports a first communication method and a second communication circuit configured to support a second communication method, transmit, in at least one first band, a signal having a magnitude less than or equal to a first threshold value, and transmit, in at least one second band, a signal having a magnitude less than or equal to a second threshold value. The first communication circuit may be configured to form, based on the first communication method, a first connection to an external electronic device, the second communication circuit may be configured to transmit, based on a first function based on the first connection, having been executed, a signal having a magnitude less than or equal to the first threshold value, and the first threshold value may be less than the second threshold value.

An electronic device is provided. The electronic device includes a first communication circuit that supports a first communication method and a second communication circuit configured to support a second communication method, transmit, in at least one first band, a signal having a magnitude less than or equal to a first threshold value, and transmit, in at least one second band, a signal having a magnitude less than or equal to a second threshold value. The first communication circuit may be configured to form, based on the first communication method, a first connection to an external electronic device, the second communication circuit may be configured to transmit, based on a first function based on the first connection, having been executed, a signal having a magnitude less than or equal to the first threshold value, and the first threshold value may be less than the second threshold value.