Disclosed are a method and device for transmitting data. The method includes: a network device sending configuration information to a terminal device, the configuration information including at least one of the following: information for indicating a starting position for transmission of an uplink data block, information for indicating an end position for transmission of an uplink data block, and information for configuring a reference signal for transmission of an uplink data block; and according to the configuration information, the network device receiving an uplink data block sent by the terminal device.

Aspects of the present disclosure provide mechanisms for utilizing a single uplink grant to transmit scheduling requests (SRs) for two or more logical channels. A base station may allocate a separate grant of uplink resources for each SR opportunity (e.g., each logical channel for which a user equipment (UE) may transmit a SR to the base station). When the allocated uplink resources are within the same time period, the UE may select a subset of the SR opportunities for which to transmit a SR and partition the subset into one or more groups of SR opportunities. The UE may then generate one or more SR bits representing the one or more groups of SR opportunities and transmit the one or more SR bits on the single uplink grant.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may obtain access to a base station by performing an initial access procedure within an initial access bandwidth that contains control channel resources. The UE may receive a configuration of a downlink bandwidth part (BWP) following the initial access procedure, and may determine that the downlink BWP fully contains the initial access bandwidth. In some cases, the UE may make the determination based on an indication sent from the base station. For instance, the indication may be provided as part of one or more control channel configurations transmitted to the UE. Based on determining that the downlink BWP fully contains the initial access bandwidth, the UE may monitor for control information in the downlink BWP using control channel resources in the downlink BWP that correspond to control channel resources used in the initial access bandwidth.

Aspects of the present disclosure provide apparatus, methods, processing systems, and computer readable mediums for updating timing advance information in L1 (physical layer) and L2 (medium access control (MAC) layer) based inter-cell mobility. An example method generally includes receiving, via physical (PHY) layer or medium access control (MAC) layer signaling, a joint update to at least one serving cell to serve the UE and a timing advance (TA); and applying the updated TA while communicating in the at least one serving cell.

A method and apparatus for performing autonomous transmission for performing collision mitigation and complexity reduction for non-orthogonal multiple access (NOMA) transmissions are disclosed. A wireless transmit/receive unit (WTRU) may receive a configuration with multiple SRs and associated preamble subsets, randomly select a preamble subset and select a SR configuration according to the randomly selected preamble subset based on the received configuration. The WTRU may transmit an SR associated with the selected preamble subset. Next the WTRU may select a preamble from the selected preamble subset, and transmit the selected preamble with a data transmission. Each SR associated with preamble subsets may be distinguished by time and frequency resources, sequence index value, or PUCCH index value.

A candidate control channel resource determining method and apparatus are provided. Under the method, a first and a second aggregation level can be determined by a terminal. The aggregation level is a quantity of control channel resource elements in a candidate control channel. The first aggregation level is less than the second aggregation level. Control channel resource elements in a candidate control channel set corresponding to the second aggregation level form a first quantity of candidate control channel sets corresponding to the first aggregation level. One of the first quantity of candidate control channel sets corresponding to the first aggregation level can be determined as a target set based on an identifier of the terminal. A control channel resource element occupied by each candidate control channel in the target set can be determined. A candidate control channel in the target set can be detected for a received signal.

In a wireless access network, a false base station (FBS) may imitate a legitimate base station by repeating the transmissions of the legitimate base station at a higher power level such that one or more user equipment (UEs) synchronize with the FBS instead of the legitimate base station. The present disclosure provides a UE that detects an FBS. The UE may estimate a time of arrival of different multipath components of a downlink signal corresponding to a physical cell identity. The UE may determine an existence of FBS based on a difference between the times of arrival of two of the different multipath components exceeding a threshold amount of time. The UE may perform a mitigation operation in response to determining the existence of the FBS.

Provided is a terminal apparatus for communicating with a base station apparatus by using a plurality of subcarriers by a grant free access scheme, the terminal apparatus includes: a configuration unit configured to configure the number of the plurality of subcarriers to be used for transmission to the specific number of the plurality of subcarriers less than or equal to the prescribed number of the plurality of subcarriers; and a transmitter configured to transmit, in a prescribed communication band, a transmit signal by using the plurality of subcarriers of the specific number among the plurality of subcarriers of the prescribed number, in which the transmit signal does not include information for indicating the specific number of the plurality of subcarriers, the transmitter performs determination of a frequency in the prescribed communication band to which the plurality of subcarriers of the specific number are allocated, and the determination of the frequency in the prescribed communication band is not configured by the base station apparatus.

Apparatuses, methods, and systems are disclosed for transmitting a physical downlink shared channel after losing uplink synchronization. One method includes: transmitting first downlink control information that schedules a physical downlink control channel order; transmitting second downlink control information that schedules a physical downlink shared channel transmission; transmitting the physical downlink control channel order based on the first downlink control information; transmitting the physical downlink shared channel transmission based on the second downlink control information, wherein the physical downlink control channel order and at least a portion of the physical downlink shared channel transmission are transmitted after a remote unit loses an uplink synchronization and before the remote unit completes a physical random access channel procedure.

Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently signaling configurations of physical resources and transmission parameters to a user equipment (UE) for small data transmissions (for example, data transmissions in an inactive or idle state). A base station may broadcast or multicast downlink control information (DCI) in one or more control channels that schedules data transmissions in a set of data channels. The base station may then multicast one or more configurations in each of the data channels, and a UE may decode one of the data channels to determine a configuration for a small data transmission. Because the configurations may be transmitted in the data channels in addition to system information or paging information, a base station may have access to sufficient resources to provide suitable configurations to a UE for communications in an inactive or idle state.