Provided is a high-speed communication system with the high reliability and the low latency under New Radio (NR). A base station device includes a plurality of distributed units (DUs, 802) that transmit and receive radio signals, and a central unit (CU, 801) that controls the plurality of DUs (802). The CU (801) duplicates a downlink packet addressed to a communication terminal device (804), and forwards the duplicated downlink packet to each of at least two DUs (802) among the plurality of DUs (802). Each of the at least two of the DUs (802) transmits, to the communication terminal device (804) by the radio signal, the downlink packet obtained from the CU (801). Upon redundant receipt of the downlink packets, the communication terminal device (804) removes a redundant downlink packet in accordance with a predefined downlink packet removal criterion.

Provided is a high-speed communication system with the high reliability and the low latency under New Radio (NR). A base station device includes a plurality of distributed units (DUs, 802) that transmit and receive radio signals, and a central unit (CU, 801) that controls the plurality of DUs (802). The CU (801) duplicates a downlink packet addressed to a communication terminal device (804), and forwards the duplicated downlink packet to each of at least two DUs (802) among the plurality of DUs (802). Each of the at least two of the DUs (802) transmits, to the communication terminal device (804) by the radio signal, the downlink packet obtained from the CU (801). Upon redundant receipt of the downlink packets, the communication terminal device (804) removes a redundant downlink packet in accordance with a predefined downlink packet removal criterion.

Logic may define one or more wake-up preambles suitable for high data rates for a wake-up radio (WUR) packet. Logic may define wake-up preamble with different counts of symbols. Logic may generate a wake-up preamble as two microsecond pulses of orthogonal frequency-division multiplexing (OFDM) symbols in a four megahertz (MHz) bandwidth. Logic may generate and receive a high data rate (HDR) WUR preamble or a low data rate (LDR) WUR preamble. The HDR preamble may signal a data rate of 250 kilobits per second and the LDR preamble may signal a data rate of 62.5 kilobits per second. The HDR preamble bit count may be twice a bit count of the LDR preamble. The HDR preamble may be 32 bits. The duration of transmission of the HDR may be 64 microseconds and duration of transmission of the LDR may be 128 microseconds.

A first base station distributed unit (BS-DU) receives, from a base station central unit (BS-CU), a first power value for uplink transmission of a wireless device to the first BS-DU. The first BS-DU receives, from the BS-CU, a third power value for uplink transmission of the wireless device to the first BS-DU, wherein the third power value is based on a second power value for uplink transmission of the wireless device to a second BS-DU. The first BS-DU transmits, to the BS-CU, a response confirming addition of the second BS-DU for the wireless device.

There is provided a method to operate a first apparatus (100) of a cellular radio communications network, wherein the method comprises: receiving a plurality of PUCCH, Physical Uplink Control Channel, configuration parameters; and transmitting UCI, Uplink Control Information, via a PUCCH, wherein the PUCCH is configured according to at least one of the received plurality of PUCCH configuration parameters.

Certain aspects of the present disclosure provide techniques for supporting multiple semi-persistent resource allocations per serving cell. Embodiments include determining an association between one or more semi-persistent resource allocations and one or more identifiers. Embodiments include receiving signaling indicating activation or deactivation of at least one of the one or more semi-persistent resource allocations. Embodiments include determining an identifier of the at least one of the one or more semi-persistent resource allocations based on the association. Embodiments include sending an acknowledgment of the activation or deactivation. The acknowledgment may indicate the identifier of the at least one of the one or more semi-persistent resource allocations.

Certain aspects of the present disclosure provide techniques for supporting multiple semi-persistent resource allocations per serving cell. Embodiments include determining an association between one or more semi-persistent resource allocations and one or more identifiers. Embodiments include receiving signaling indicating activation or deactivation of at least one of the one or more semi-persistent resource allocations. Embodiments include determining an identifier of the at least one of the one or more semi-persistent resource allocations based on the association. Embodiments include sending an acknowledgment of the activation or deactivation. The acknowledgment may indicate the identifier of the at least one of the one or more semi-persistent resource allocations.

The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. An apparatus, a method and a system for system information acquisition, beam failure recovery, and cell reselection in wireless communication system are provided.

The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. An apparatus, a method and a system for system information acquisition, beam failure recovery, and cell reselection in wireless communication system are provided.

According to one embodiment of the disclosure, a method by which a first device performs SL communication is provided. The method can comprise the steps of: generating, in a MAC CE form, SL CSI related to a channel state between a first device and a second device in a MAC layer; transmitting, to a base station, a first SR triggered on the basis of the SL CSI having the MAC CE form; receiving an SL grant from the base station; and transmitting, to the second device, the SL CSI on an SL resource related to the SL grant.