Methods, systems, and devices for wireless communications are described. In some systems, a first user equipment (UE) may communicate with one or more other UEs in accordance with a distributed resource allocation mode. To select suitable resources for an intended sidelink transmission, the first UE may transmit, to a second UE, a request for a type of coordination information based on information associated with the intended sidelink transmission from the first UE. The second UE may generate coordination information in accordance with the requested type and may transmit the coordination information to the first UE. The first UE may use the coordination information to select a set of resources over which to perform the intended sidelink transmission from the first UE and may perform the intended sidelink transmission over the selected set of resources.

A UE can receive a PDCCH for scheduling a first PDSCH on a serving cell. The UE can receive the first PDSCH from among a plurality of SPS PDSCHs and the first PDSCH on the basis of that i) the first PDSCH overlaps, with respect to time, with the plurality of SPS PDSCHs that are required to be received on the serving cell, and ii) a PDCCH ends at least 14 symbols before the start symbol of the earliest SPS PDSCH from among the plurality of SPS PDSCHs.

The present disclosure relates to a communication technique, which is a convergence of IoT technology and 5G communication system for supporting higher data transmission rate beyond 4G system, and a system for same. The present invention can be applied to smart services (e.g. smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail businesses, security- and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. The present disclosure discloses a method and apparatus for retransmitting synchronous and asynchronous data, and a method and apparatus for recognizing and sharing a HARQ process ID between a terminal and a base station

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, control signaling identifying a configuration for reporting channel metrics for transport blocks that each include a plurality of code block group. The UE may receive a first transport block that includes a first plurality of code block groups. The UE may transmit a report indicating a channel metric for one or more code block groups of the first plurality of code block groups of the first transport block in accordance with the configuration for reporting channel metrics. In some cases, the UE may report a differential channel metric, based in part on a reference metric. Additionally or alternatively, the UE may report compressed feedback for a group CBGs.

The present disclosure includes systems, methods, and devices that can provide fast secondary cell (SCell) activation in a wireless communication network. In various embodiments, the methods and devices, including access nodes and mobile radio communication terminals, may use medium access control (MAC) control elements (CEs) commands that facilitate fast SCell activation.

Provided are an information determination method and device, a receiving method and device, a communication node, and a medium. The method includes: receiving indication information; and determining channel state information of M physical uplink channel transmissions according to the indication information, where M is an integer greater than or equal to 1.

A base station (BS) communicatively connected to a group including a first user equipment (UE) and a second UE can implement a method. The method includes determining (316 or 416), by processing hardware of the base station, a channel state information (CSI) process configuration for the group. The method also includes transmitting (318) a control signal including the CSI process configuration to the group, and transmitting (336) a reference signal to the group in accordance with the CSI process configuration. The method further includes, in response to transmitting the reference signal to the group, receiving (354) from at least one UE of the group an indication of joint channel state of the group.

A method and apparatus to configure grant-free transmission resources are provided. At least two configuration options can co-exist for configuring the grant-free transmission resources. The base station may explicitly or implicitly notify a user equipment which option is selected for grant-free transmission by that user equipment.

The present disclosure relates to a method and apparatus for performing grant-free transmission and reception in a wireless communication system, and a grant-free reception method performed by a terminal in a mobile communication system according to an embodiment of the disclosure includes receiving, from a base station, configuration information related to downlink semi-persistent scheduling (SPS) and configuration information related to a data indication signal (DIS), receiving, from the base station, downlink SPS activation indication information, monitoring the DIS based on the configuration information related to the DIS, and when the DIS is detected or when the DIS is detected and monitoring indication information for a downlink data channel is obtained from the DIS, monitoring the downlink data channel based on at least one of the configuration related to downlink SPS and the downlink SPS activation indication information.

The present disclosure relates to electronic device, communication method and storage medium in a wireless communication system. An electronic device for user equipment (UE) comprises a processing circuitry configured to: select a set of transmission resources from a resource pool for a first Sidelink communication from the UE to a first receiving UE; control to transmit 1st-stage Sidelink Control Information (SCI) for the first Sidelink communication to the first receiving UE so as to indicate the set of transmission resources; determine to preempt a portion of the set of transmission resources for another communication; and set a preemption indication in 2nd-stage SCI for the first Sidelink communication to indicate that the portion of the set of transmission resources is preempted.