Adaptive Beam Sweeping Pattern Adjustment for 5G Base Stations
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Solution Overview
Problem
In 5G wireless communication systems, beam interference between base stations hampers accurate channel estimation and increases the failure rate of synchronization and broadcast channels due to overlapping beam directions, especially in dynamic network environments with irregular base station installations and frequent cell activations/deactivations.
Innovation Solution
A method and apparatus for adaptively determining and dynamically adjusting the beam sweeping pattern of base stations based on received beam collision information, involving a distributed or centralized approach to minimize interference by adjusting beam directions, powers, or resource allocations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If beamforming technology is used to increase transmission distance and data rates, then signal transmission quality is improved, but beam interference between base stations occurs causing channel estimation inaccuracy
Solution Approach 1:
The patent implements dynamic beam sweeping pattern adjustment where base stations adaptively change their beam directions and resource allocations based on real-time collision detection. The beam sweeping pattern is no longer static but dynamically modified to avoid interference, allowing the system to maintain beamforming gains while eliminating harmful beam collisions that degrade channel estimation accuracy
Solution Approach 2:
The patent establishes a feedback mechanism where terminals detect beam collisions between serving and neighboring base stations, report collision information to base stations, and base stations adjust their beam sweeping patterns accordingly. This closed-loop feedback system enables continuous optimization of beam patterns to prevent interference while maintaining transmission quality
2Adaptability or versatility
If beam sweeping operation is performed with fixed patterns, then system complexity is reduced, but beam collision between base stations increases in dynamic network environments
Solution Approach 1:
The patent divides the beam sweeping pattern adjustment into independent, manageable components: individual beam directions, resource allocations, and timing parameters can be adjusted separately. This segmentation allows the system to adapt to network changes by modifying only the necessary portions of the beam pattern rather than redesigning the entire system, balancing adaptability with manageable complexity
Solution Approach 2:
The patent adjusts beam sweeping patterns by changing key parameters such as beam directions, resource allocations, and timing without fundamentally altering the beamforming technology itself. This parameter-based adjustment approach enables adaptability to dynamic network environments while keeping the underlying system complexity relatively low
3Reliability
If beam directions are adjusted to avoid collision, then channel reception success rate is improved, but system control complexity increases
Solution Approach 1:
The patent enables base stations to autonomously adjust their own beam sweeping patterns based on collision information received from terminals and neighboring base stations. Each base station independently makes decisions about beam direction and resource allocation adjustments, eliminating the need for complex centralized control while improving channel reception success rate through adaptive beam pattern modification
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Embodiments of the present invention provide a method and an apparatus for adaptively determining a beam sweeping pattern of a base station in a beamforming-based wireless communication system. An embodiment of the present invention provides an operating method of a serving base station in a wireless communication system, the operating method comprising: receiving, from at least one terminal, beam collision information indicating a collision between beams received from the serving base station and at least one neighboring base station adjacent to the serving base station; and adjusting a beam sweeping pattern of a beam transmitted to the at least one terminal on the basis of the received beam collision information. Various other embodiments of the present invention are also disclosed.