This application provides a method for sending a data volume report. The method includes: transmitting, by a first device, a first data volume report to a first access device when a condition for reporting a data volume is satisfied, wherein the first data volume report indicates a first uplink data volume transmitted from the first device and a second uplink data volume transmitted from a second device and received by the first device, and the condition comprises one or more of: (1) a sub-condition that at least one of the first uplink data volume or the second is greater than or equal to a predetermined threshold; (2) a time period that the sub-condition is satisfied is greater than or equal to a predetermined time threshold; (3) an instruction instructing the first device to report at least one of the first uplink data volume or a data volume transmitted from the second device; (4) at least one of a plurality of connections between the first device and the first access device is disconnected; or (5) a connection between the first device and a second access device is disconnected.

This application provides a communication method and a communications device. The method includes: determining, by a terminal device, a cell in which a beam failure occurs; and sending, by the terminal device, first indication information to a network device, where the first indication information is used to indicate the cell in which the beam failure occurs.

A plant system includes: an access node connected to a network; a plurality of controllers configured to perform distributed control on a plurality of field devices provided in a plant; and a wireless communication unit provided in each group of a plurality of groups into which the plurality of controllers are grouped and connected to each controller in the corresponding group via a wired connection, and configured to connect each controller to the access node via a wireless connection.

This application provides wireless communications configuration methods and apparatuses. One method includes: receiving a routing configuration of a transmission path for a layer of the network device, wherein the routing configuration comprises an identifier of a first wireless backhaul node, the network device is a distributed unit (DU) of the donor node or a second wireless backhaul node connected to the DU, the CU and at least one wireless backhaul node is on the transmission path, and wherein the layer of the network device is capable of mapping, on a backhaul link based on identification information related to quality of service (QoS) requirement comprised in a data packet, the data packet to a radio link control (RLC) channel on a backhaul link for sending the data packet to a next-hop node of the network device on the transmission path; and performing the routing configuration on the layer.

Systems and methods for controlling congestion of a data network are provided. An engine round-trip time (RTT) and a fabric RTT for a network flow are determined. An engine-based congestion window size for the flow is determined based on the engine RTT and a target engine RTT. A fabric-based congestion window size for the flow is determined based on the fabric RTT and a target fabric RTT. The smaller of the engine-based congestion window size and the fabric-based window size is selected for use in transmitting a future packet associated with the flow. The target engine RTT is determined based in part on the current congestion window used to transmit packets for the flow and/or the target fabric RTT is determined based on a number of hops packets associated with the flow traverse from a source to a destination associated with the flow.

Disclosed is a data transmission method of a V2X communication device. A data transmission method of a V2X communication device according to an embodiment of the present invention comprises the steps of: acquiring CBR values for a plurality of channels; configuring a CBR threshold value on the basis of the CBR values; assigning at least one channel candidate group to channels having CBR values that are equal to or smaller than the CBR threshold value; and selecting a transmission channel, through which service data is to be transmitted, from the at least one channel candidate group.

Embodiments of the application provide a data transmission method and a device. A sending device periodically obtains a first packet sequence number and a second packet sequence number. The first packet sequence number is a maximum value in packet sequence numbers respectively corresponding to packets that belong to a first data flow and that are received by a receiving device through a first data channel in a statistics period. The second packet sequence number is a maximum value in packet sequence numbers respectively corresponding to packets that belong to the first data flow and that are received by the receiving device through a second data channel in the statistics period. The sending device updates a packet cache queue of: the first data channel, the second data channel, or both the first and the second data channels, based on the first packet sequence number and the second packet sequence number.

The disclosure generally relates to various methods to increase network coverage for a Voice-over-Internet Protocol (VoIP) session between a first user equipment (UE) and a second UE. In an aspect, a first and second UEs negotiate a codec configuration to use in the VoIP session, transmits, to the second UE, a maximum end-to-end packet loss rate (PLR) that the first UE can tolerate for received media given the negotiated codec configuration, receives, from the second UE, a maximum end-to-end PLR that the second UE can tolerate for received media given the negotiated codec configuration, and determines a distribution of the maximum end-to-end PLRs among respective uplinks and downlinks at the first UE and the second UE.

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 base station central unit receives, from a base station distributed unit, assistance information comprising information of subsequent data for a small data transmission procedure of a wireless device. Based on the assistance information, the base station central unit sends, to the wireless device, a radio resource control release message or a radio resource control message indicating transition to a radio resource control connected state.