DATA TRANSMISSION METHOD, AND DEVICE

• Main Authors: TANG, Lingling, HE, Jian, ZHENG, Kai, KANG, Jiao, WANG, Fanzhao
• Format: Patent
• Language: English; French; German
• Published: 10.07.2024
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

This application discloses a data transmission method and a device, which may be applied to real-time transmission of an audio and video session. includes: A sender device creates n streams through an interface provided by a QUIC protocol, and sets attribute information of the streams (or sets different attribute information for different data blocks in a same stream). The sender device transfers the attribute information of the stream to a first network node by using a first extended frame (or transfers attribute information of different data blocks in a same stream by using a second extended frame). The first or second extended frame is a frame obtained by performing protocol extension on the QUIC protocol. After receiving the first or second extended frame, the first network node determines, according to a sending policy of the first network node, routing, caching, and distribution of a target data stream, and continues to deliver the attribute information. In this application, attribute information of a same stream is transferred in a distribution network, and network nodes may formulate different sending policies based on the attribute information. This implements corresponding reliability and delay assurance, and achieves effect of improving user experience.