Interference Randomization in 5G Beam Configurations
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Solution Overview
Problem
In 5G mobile communication systems, especially in new radio (NR), the high density of base stations leads to severe interference between reference signals due to fixed beam configurations, causing measurement failures and affecting positioning performance.
Innovation Solution
Implementing an interference randomization method through beam rotation, beam switching, or beam muting, where reference signals are sent in different time periods with varying receiving modes, using interference randomization configuration information to adjust beam settings and reduce continuous interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed beam configurations are used for reference signals, then device complexity is reduced and ease of operation is improved, but continuous interference occurs between reference signals from different base stations, deteriorating measurement precision and positioning performance
Solution Approach 1:
The patent applies dynamics by making the beam configuration movable and adjustable over time. Specifically, the network device configures different beam directions for reference signals in different time periods, allowing the system to adapt dynamically to interference conditions. This resolves the contradiction by maintaining operational simplicity through automation while improving measurement precision through time-varying beam configurations that avoid continuous interference.
Solution Approach 2:
The patent implements periodic action by configuring reference signals to use different beam directions in different time periods. The network device establishes a periodic pattern where beams are rotated or switched between time periods, creating time-division multiplexing of beam directions. This periodic variation eliminates continuous interference while maintaining system simplicity through regular, predictable patterns.
2Measurement precision
If beam rotation or beam switching is implemented to randomize interference, then measurement precision and positioning performance are improved, but device complexity and configuration complexity increase
Solution Approach 1:
The patent applies self-service by enabling the network device to automatically configure and manage beam directions without requiring manual intervention. The network device autonomously determines appropriate beam configurations for different time periods, performs the beam rotation or switching operations, and adapts to interference conditions independently. This reduces the perceived complexity for users while maintaining sophisticated interference randomization capabilities.
Solution Approach 2:
The patent implements parameter changes by modifying beam direction parameters over time. The network device changes the spatial parameters of reference signals by rotating or switching beams between different time periods. This dynamic parameter adjustment achieves interference randomization and improves measurement precision while keeping the underlying system architecture relatively simple through controlled parameter variation.
3Area of stationary object
If more base stations are deployed to improve coverage, then area of coverage is increased, but the density of base stations increases leading to more severe reference signal interference
Solution Approach 1:
The patent applies dimensionality change by introducing the time dimension to the beam configuration problem. Instead of only adjusting spatial parameters (beam directions in different areas), the system varies beam configurations across time periods. This temporal dimension allows base stations to serve multiple areas while using different beam directions at different times, thereby reducing interference without limiting coverage expansion.
Solution Approach 2:
The patent uses dynamics to allow base station configurations to adapt over time. As more base stations are deployed to expand coverage, the system dynamically assigns different beam directions to different time periods, enabling interference randomization across the expanded network. This dynamic approach allows coverage area to grow while managing interference through time-varying configurations.
Data Source
AI summary
This application provides an interference randomization method and apparatus, to resolve a problem of continuous interference that may be caused by a configuration of a reference signal, especially a positioning reference signal, in a beam scenario. The method includes: A terminal device receives interference randomization configuration information, where the interference randomization configuration information includes configuration information in at least two time periods, receiving modes of a reference signal in the at least two time periods are different, and the receiving mode is used to indicate a receiving status of the terminal device for the reference signal on a reference signal resource or a reference signal resource set. The terminal device receives the reference signal based on the interference randomization configuration information.