Method and device for processing IAB node information in IAB network

Abstract

The invention provides a method and device for processing IAB node information in an IAB network, and the method comprises the steps that a second IAB node receives notification information transmitted by a first IAB node; wherein the notification information comprises at least one of the following information: notification information used for notifying a connection switching event and / or a connection reconstruction event, and indication information used for indicating to perform packet data convergence protocol PDCP state reporting. According to the method and the device, the problem that the downlink notification is not solved yet after the IAB node is possibly switched to other nodes due to the change of a wireless link in the related technology is solved, and the effect of ensuring the complete switching of the IAB node is achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for processing IAB node information in an integrated access backhaul IAB network. Background technique [0002] The fifth generation mobile communication technology (5th Generation, referred to as 5G) under research by 3GPP will achieve greater throughput, more user connections, lower latency, higher reliability, and lower power consumption (including network side equipment and user terminals). At present, in the discussion of 3GPP, Integrated Access and Backhaul (IAB) technology has been established as a new research project, and its goal is to enable one or more IAB nodes to serve as the UE of the parent node Connect to the mother node through its local access resources, and form a multi-hop wireless self-backhaul network on this basis to provide a backhaul connection for the local access UE of the IAB node. [0003] In the deployment scenario of 5G UDN (...

AI Technical Summary

Problems solved by technology

For wired backhaul, in scenarios where a large number of TPs are densely deployed (such as dense neighborhoods), the cost of wired backhaul may be unacceptably high considering the deployment or lease costs of cables or optical fibers, site selection and maintenance costs, etc.

Even if wired backhaul is laid, due to the dense deployment scenario, the number of users served by each node is small, the load fluctuates greatly, or due to energy saving / interference control, some nodes will be dynamically turned on or off, and the backhaul link is often idle status, and the use of content prediction and caching technologies will also increase the fluctuation range of resource requirements for backhaul links, which will lead to low efficiency of wired backhaul and waste of investment costs

For microwave backhaul, there are also increased hardware costs and additional spectrum costs (if unlicensed spectrum is used, the transmission quality cannot be guaranteed), the antenna height of the transmission node is relatively low, and microwaves are more likely to be blocked, resulting in backhaul chain Defects such as violent fluctuations in road quality

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