[Problem] Provided is a mechanism for enabling periodic transmission and reception of the UL control signal in the NR in a more appropriate manner. [Solution] A terminal device communicates with a base station according to the TDD (Time Division Duplex) method. The terminal device includes a control unit that transmits uplink control signals based on the setting information indicating a first resource which is periodically placed in each of a plurality of bandwidth parts included in a component carrier and which is to be used in the transmission of the uplink control signals.

A terminal (200) includes a receiving unit (203) that receives a reference signal within a specified measurement period, a control unit (213) that acquires an average or statistical information of layer 1 reception qualities of the reference signal, the layer 1 reception qualities being measured within the measurement period, and a transmitting unit (201) that transmits the average or the statistical information to a communication node (100a or 100b).

A terminal according to an embodiment of the present disclosure includes a receiving section configured to receive downlink control information that schedules or triggers a specific signal, and a control section configured to use different quasi-co-location (QCL) parameters for the specific signal between a case where the specific signal is started within a first period for decoding the downlink control information and a case where the specific signal is started within a second period after the first period. According to one aspect of the present disclosure, it is possible to appropriately determine a QCL parameter.

The disclosure provides a method and a device in a User Equipment (UE) and a base station supporting random access. The UE first transmits a first radio signal, and then receives a second radio signal. A first bit block is used for generating the first radio signal, the first bit block includes a positive integer number of bits, the first bit block carries a first identifier and a first data block, the first bit block lacks a field used for indicating RRC connection request cause information, a field used for indicating RRC connection reestablishment request cause information or a field used for indicating RRC connection resume request cause information compared with a Msg3, the first data block includes a positive integer number of higher-layer bits, the second radio signal carries a second identifier. The first identifier is equal to the second identifier.

A method and apparatus are disclosed. In an example from the perspective of a first device, a grant is received from a network node. The grant allocates a set of sidelink data resources. One or more sidelink data transmissions are performed on the set of sidelink data resources. A second feedback information associated with the one or more sidelink data transmissions is received and/or detected. An uplink resource is derived. A first feedback information is transmitted on the uplink resource to the network node. The first feedback information is set based upon the second feedback information.

The disclosure provides a method and a device in a communication node for wireless communication. The communication node first receives first information and second information, and then transmits a first radio signal in W1 time sub-window(s); the first information is used for determining X candidate time window(s), any one of the X candidate time window(s) has a time length equal to a first time length, and the first time length is fixed; for a subcarrier spacing of a subcarrier occupied by the first radio signal, one of the X candidate time window(s) comprises Y candidate time sub-window(s), and the Y is related to the subcarrier spacing of the subcarrier occupied by the first radio signal; the second information is used for indicating W candidate time sub-window(s) out of the Y candidate time sub-window(s); and each of the W1 time sub-window(s) is one of the W candidate time sub-window(s).

During operation, a radio node may provide, at a transmit time during a first time interval, a first instance of a keep-alive message to a computer. Then, the radio node may receive, at a receive time prior to a first instance of a transmit expire time, an instance of a keep-alive response from the computer, where the instance of the keep-alive response authorizes the radio node to transmit in a granted portion of the spectrum until a second instance of the transmit expire time has elapsed. Moreover, the radio node may determine, based at least in part on the receive time and the first instance of the transmit expire time, an updated transmit time. Next, the radio node may provide, at the updated transmit time, which is prior to the second instance of the transmit expire time, a second instance of the keep-alive message addressed to the computer.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, techniques for improving semi-persistent scheduling performance, including in the context of cellular vehicle-to everything (CV2X) communications, are provided. For example, a method of wireless communication performed by a user equipment can include determining a first periodicity for transmitting safety messages, determining a second periodicity for transmitting the safety messages, wherein the second periodicity is different than the first periodicity, determining, based on a probabilistic determination process, whether to continue with the first periodicity or switch to the second periodicity, generating, based on the determination to continue with the first periodicity or switch to the second periodicity, the safety messages at the first periodicity or the second periodicity, and transmitting the safety messages at a same periodicity at which the safety messages were generated. Numerous other aspects are provided.

A communication method and system for converging a 5.sup.th-Generation (5G) communication system for supporting higher data rates beyond a 4.sup.th-Generation (4G) system with a technology for Internet of Things (IoT) is provided. The communication method includes 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. This disclosure provides a grant-free-based data transmission method and apparatus.

A method and apparatus are disclosed. In an example from the perspective of a first device, a grant is received from a network node. The grant allocates a set of sidelink data resources. One or more sidelink data transmissions are performed on the set of sidelink data resources. A second feedback information associated with the one or more sidelink data transmissions is received and/or detected. An uplink resource is derived. A first feedback information is transmitted on the uplink resource to the network node. The first feedback information is set based upon the second feedback information.