This application discloses a method for requesting an uplink transmission resource, a terminal, and a network device. The method includes: determining, by a terminal, that a collision occurs when the terminal sends a first request to a network device, where the first request is used to request the network device to schedule an uplink transmission resource for the terminal; and adjusting, by the terminal according to a preset rule, a manner of sending the first request. In embodiments of this application, the terminal may request the uplink transmission resource from the network device by using the first request. This avoids a prior-art problem that a terminal can request an uplink transmission resource from a network device only by initiating a random access procedure, and improves flexibility of requesting an uplink transmission resource by the terminal from the network device.

A wireless local area network (WLAN) communication method and apparatus using multiple transmission speed partitioning and cooperative transmission are disclosed. The WLAN communication method includes transmitting, by access point to the nodes, transmission time slots, partitions and internal transmission priorities using transmission time slot information, partition information and internal transmission priority information, receiving uplink packet from one node, determining whether downlink data to be transmitted to the high speed or the low speed node is present, or not in the download queue, transmitting, if present, the downlink packet to the nodes, removing downlink data from the download queue for ACK, and transmitting, if not present, transmitting ACK to the nodes.

Channel occupancy time (COT) aware sensing and resource selection for new radio-unlicensed (NR-U) sidelink operations is disclosed. A first sidelink user equipment (UE) determines a sensing window or resource selection window (RSW) based on a projected listen-before-talk (LBT) completion time. The UE may sense for a subset of sideline resources within the RSW and COT-SI from a neighboring sidelink UE including identification of a COT initiated by the neighboring UE and one or more parameters associated with the COT. The UE may identify in-COT resources of located within the COT and out-of-COT resources located outside of the COT and then randomly select a set of transmission resources from the in-COT and out-of-COT resources. The UE may then transmit to a second UE using the set of transmission resources.

In the present disclosure, a UE transmits a random access preamble (RAP) on a physical random access channel (PRACH) and a control channel (CCCH) service data unit (SDU) on a physical uplink shared channel (PUSCH); and receives a medium access control (MAC) protocol data unit (PDU) based on transmitting the RAP and the CCCH SDU. The MAC PDU includes a first part, and a second part after the first part. The first part includes multiple UE contention resolution identities (UE CRIDs).

The present invention relates to a method for transmitting a medium access control (MAC) protocol data unit (PDU) by a user equipment (UE) in a wireless communication system. Especially, the method includes the steps of generating the MAC PDU; and based on a listen before talk (LBT) succeeding, transmitting the MAC PDU on an uplink resource using a Hybrid automatic repeat request (HARQ) process; wherein, based on the MAC PDU including user data, a configured grant timer (CGT) and a configured grant retransmission timer (CGRT) for the HARQ process are started, and a status of the HARQ process is set to not pending, wherein, based on the MAC PDU not including the user data and being multiplexed with uplink control information (UCI), the CGT and the CGRT for the HARQ process are not started, and the status of the HARQ process is set to not pending.

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for performing RLC retransmission based on contention-based PUSCH in a wireless communication system, the method comprising: transmitting a MAC PDU including at least one RLC PDU received from a RLC entity and an identifier of the UE using a CB grant to an eNB; determining whether the MAC PDU transmission using the CB grant is failed or not; indicating result of the determining for the MAC PDU transmission using the CB grant; receiving the at least one RLC PDU at a next transmission opportunity if the MAC PDU transmission using the CB grant is failed, without considering that RLC status report including NACK for the at least one RLC PDU is not received.

The reduction of multicast traffic collisions is facilitated. A device that is associated with a multicast group receives a multicast message requesting re-transmission of an acknowledgment message from the device. The multicast message includes information identifying the device within the multicast group of devices. In response to the device being determined to be identified by the information, the acknowledgement message can be re-transmitted after a defined transmit delay period after receipt of the multicast message. The defined transmit delay period can be based on the number of devices in the multicast group, based on the number of previous re-transmissions by the device and/or based on the number of devices for which re-transmission is requested.

Apparatuses, systems, and methods for a wireless device and base station transmitting and/or receiving request to send (RTS) and clear to send (CTS) messages in 5G New Radio. The RTS/CTS messages may be comprised within a single self-contained mini slot. The RTS/CTS message design may provide for link adaptation and/or beamforming.

A method of wireless communication performed by a user equipment (UE) includes: operating in a Dual SIM Dual Standby (DSDS) mode in which a first subscriber identity module (SIM) is designated as a default data subscription (DDS); transmitting a sounding reference signal (SRS) from a communication port of the UE, wherein the SRS has a timing offset assigned by a network associated with the first SIM; receiving paging messages from a network associated with a second SIM; determining an offset adjustment to avoid a collision between the SRS and the paging messages; sending a request to the network associated with the first SIM to adjust the timing offset according to the offset adjustment; and receiving an offset change configuration from the network associated with the first SIM.

A wireless communication system under a contention-based protocol comprises an access point and at least one station, wherein the station is arranged for wirelessly communicating with the access point under the contention-based protocol. In the operations of the wireless communication system, the access point broadcasts a polling usage sequence to assign a time slot for the station, and the station subsequently uses the assigned time slot to transmit a data packet to the access point.