Radio Node Beam Configuration for Seamless Wireless Handover
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Solution Overview
Problem
Current wireless communication networks face challenges in seamlessly transitioning wireless devices between radio network nodes, particularly when using beamforming, which can lead to reduced performance due to the time required for a device to access a new beam during handover, limiting network efficiency and data rate capabilities.
Innovation Solution
A method is introduced where the first radio network node informs the second radio network node about the need for a specific beam configuration for an incoming wireless device, allowing for coordinated beam transmissions and optimized handover processes, including the mapping of reference signals to random access channel configurations, to ensure seamless mobility and high data rate services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beamforming is used to improve data rate capabilities, then throughput and coverage are enhanced, but handover time increases due to the time required for a device to access a new beam
Solution Approach 1:
The source radio network node transmits beam configuration information to the target radio network node before the wireless device performs handover. This preliminary action allows the target node to prepare the appropriate beam configuration in advance, eliminating the time delay that would otherwise occur during handover when the device needs to access a new beam.
Solution Approach 2:
The source radio network node acts as an intermediary by collecting beam configuration information from the target node and providing it to the wireless device before handover. This intermediary role enables the device to have the necessary beam configuration information ready, facilitating faster access to the target beam without requiring time-consuming beam searching during handover.
2Productivity
If coordinated beam transmissions are implemented to enable seamless handover, then handover efficiency improves, but network complexity increases due to additional signaling between nodes
Solution Approach 1:
The beam configuration information is extracted from the target radio network node and transmitted through the source node to the wireless device. This extraction approach allows the device to obtain necessary configuration information without establishing direct complex signaling paths between all network elements, simplifying the overall network architecture while maintaining handover efficiency.
Data Source
AI summary
Embodiments herein relate e.g. to a method performed by a first radio network node for handling communication of a wireless device in a wireless communication network, wherein the first radio network node serves the wireless device and the wireless communication network further comprises a second radio network node. The first radio network node determines that the wireless device is a device using a beam configuration at the first radio network node. The first radio network node when determined that the wireless device is using the beam configuration transmits a message, to the second radio network node, with an indication requesting that the wireless device gets access to the second radio network node, and also requests usage of a beam configuration at the second radio network node.