A data transmission method and apparatus, a system, and a storage medium are provided. In the method, a user plane function network element performs transmission through an established unicast user plane connection, and when sending data of a first service to an access network device, the user plane function network element can be configured to send only the data that is of the first service and that is carried in one data flow to improve use efficiency of resources on a core network side. Then, the access network device can send, in a multicast manner through an established unicast channel, the received data of the first service to a group of terminals corresponding to the data of the first service, and does not need to additionally establish a multicast channel and switch to the multicast channel, thereby further reducing data transmission delay.

A communication system, method, and computer-readable medium therefor comprise a media server configured to receive a plurality of audio streams from a corresponding plurality of client devices, the media server including circuitry configured to rank the plurality of audio streams based on a predetermined metric, group a first portion of the plurality of audio streams into a first set, the first portion of the plurality of audio streams being the N highest-ranked audio streams, group a second portion of the plurality of audio streams into a second set, the second portion of the plurality of audio streams being the M lowest-ranked audio streams, forward respective audio streams of the first set to a receiver device, and discard respective audio streams of the second set, wherein N and M are independent integers.

Apparatuses, methods, and systems for providing function models to hubs, are disclosed. One method includes sensing, by a plurality of hubs, local data, collecting the local data from the plurality of hubs, creating function models based on the collected local data and outside data collected from outside data sources, dynamically creating non-local inputs for each of the plurality of hubs based upon the local data from the plurality of hubs and the outside data collected, a location of the hub, a time, and an application the hub serves, transmitting the created function models to the plurality of hubs at a first timing, and dynamically transmitting the non-local inputs to each of the plurality of hubs at a second timing, and applying, by one or more of the plurality of hubs, current locally sensed data and the dynamically transmitted non-local inputs to the created function models.

A broadcaster device generates a live stream including video-based commentary regarding a live event combined with an audio and/or video feed of the live event itself. A viewer device receives a copy of the integrated live event and commentator stream and synchronized event information (e.g., real-time scores), and displays the integrated stream and the event information (e.g., as a “scorebug”). Viewers of a given live event may seamlessly select amongst different broadcasters for the same live event to access different integrated live event and commentator streams respectively synchronized with the event information. A social media platform is provided in tandem with live streaming of digital content relating to live events to allow a given broadcaster and their associated viewers to communicate with one another, comment on the event and/or the broadcaster's live stream, and send digital gifts.

Embodiments of this application provide a data transmission method and a device, and relate to the field of communication technologies, to resolve how a network device sends a data packet and how each terminal device receives the data packet when a communication manner between the network device and a plurality of terminal devices is switched from a unicast manner to a multicast manner. The method includes: A network device sends first indication information to a first terminal device, where the first indication information includes a first sequence number SN, and the first indication information is used to indicate the first terminal device to receive a data packet in a multicast manner. The network device sends the data packet to the first terminal device and a second terminal device in the multicast manner based on the first SN.

A system and method for managing bandwidth of an upstream communications channel in a communications system.

A system and method for multivariate testing of messages to a subgroup in a one-to-many messaging platform. A client text message is generated for transmission to a number of users via one or more messaging services. A subset of users is defined according to one or more attributes of the text message or the users, and the client text message is transmitted only to users in the subgroup. The transmission is analyzed for performance metrics, such as actions or reactions by users in the subgroup, and based on the performance metrics, the message is optimized for transmission to the larger group of users. Optimization happens rapidly.

Video data signals are encoded such that the encoded video data signal include at least a primary and at least a secondary video data signal. The primary and secondary video data signals are jointly compressed. The primary video data signal is compressed in a self-contained manner, and the secondary video data signal is compressed using data from the primary video data signal. The jointly compressed video data signal is split into separate bitstreams, at least a primary bitstream including data for the primary video data signal and at least a secondary bitstream including data for the secondary video data signal, whereafter the primary and secondary bitstreams are multiplexed into a multiplexed signal, and the primary and secondary signals are provided with separate codes.

A method includes receiving, at a first edge node, an Internet Protocol (IP) multicast address of a first silent host node. The method further includes receiving, at a second edge node, an IP multicast address of a second silent host node. The IP multicast address of the first silent host node is equal to the IP multicast address of the second silent host node. The method further includes storing the IP multicast address of the first and second silent host node in a shared entry of a routing table. The method further includes receiving, at a third edge node, a packet from a third host node and determining that a destination address of the packet corresponds to the IP multicast address stored in the shared entry of the routing table. The method further includes sending the packet to both the first host node and the second host node.

An irrigation system includes a network hub and a plurality of remote terminal units configured for wireless communication with the network hub. The remote terminal units are connected to a device for irrigation control or sensing, such as a valve for a sprinkler. The network hub is configured to transmit a wireless broadcast to the remote terminal units, in which the wireless broadcast includes a plurality of individual packets transmitted in succession, each of the plurality of individual packets including a network identifier associated with the network hub, a time remaining in a broadcast period of time, and an assignment map indicative of an assigned state for each of the plurality of remote terminal units.