Radio bearer processing method

Abstract

The embodiment of the invention provides a radio bearer processing method. The method comprises the following steps: receiving a session establishment request message sent by a superior IAB node; if the lower-level IAB node is not included, determining radio bearer related information of the target UE according to the session establishment request message, sending a first RRC reconfiguration message carrying the radio bearer related information of the target UE to the target UE to indicate the target UE to perform radio bearer related operation according to the first RRC reconfiguration message; and receiving a first RRC reconfiguration completion message sent by the target UE, and determining that a radio bearer is successfully established with the target UE. According to the radio bearerprocessing method provided by the embodiment of the invention, the related operations of the radio bearers among the nodes are controlled through the superior IAB node, and the service transmission in the 5G IAB network is realized.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of wireless communication, and in particular, to a radio bearer processing method. Background technique [0002] 5G NR (New RAT) is a research hotspot in current wireless communication technology. Considering the deployment scenarios and applications of future cellular networks, supporting wireless backhaul and relay links can better realize the flexible and ultra-dense deployment of future NR cells, without the need for proportionally dense deployment of wired transmission networks. The integrated access and backhaul technology (IAB, Integrated Access and Backhaul) has obvious advantages in the initial stage of network deployment. figure 1 is a schematic diagram of centralized access and backhaul network deployment, such as figure 1 As shown, there are multiple centralized access and backhaul links in the network. Nodes A, B, and C can all provide wireless access for terminal UEs...

AI Technical Summary

Problems solved by technology

[0010] But in the 5G IAB network, the UE can first access the IAB node, the IAB node transmits to the main IAB node through wireless backhaul, and then the IAB node transmits to the 5G core network through wired transmission, due to the introduction of new network architecture and new node, so the existing radio bearer establishment or modification methods are no longer applicable, so a radio bearer processing method is urgently needed to solve the above problems

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