Zone-Based Cooperation for Millimeter Wave Signal Quality
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Solution Overview
Problem
Existing millimeter wave systems face challenges with obstructions causing signal degradation and loss of network access due to overlapping zones and blockages, lacking a method to identify and mitigate these issues effectively.
Innovation Solution
A zone-based cooperation method and system that involves creating multiple zones within a cell's coverage area, using channel state information (CSI) to identify blockages, and dynamically allocating additional network resources to maintain signal quality by coordinating between base stations using coordinated multipoint (CoMP) techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If base stations are placed in close proximity to cover larger geographical area, then network coverage is improved, but signal quality degrades due to overlapping zones and increased interference
Solution Approach 1:
The coverage area of each base station is segmented into multiple zones based on channel state information and obstruction patterns. This allows the system to identify specific problematic zones (such as overlapping zones or zones with frequent blockages) and apply targeted resource allocation strategies to each zone, thereby maintaining signal quality while preserving overall coverage area.
Solution Approach 2:
The patent implements zone-based resource allocation where different resource allocation strategies are applied to different spatial zones within the coverage area. Zones identified as having poor signal quality or frequent obstructions receive additional resources or adjusted allocation parameters, while zones with good signal quality use standard allocation. This local differentiation resolves the contradiction by maintaining high signal quality in problematic areas without reducing overall coverage.
2Stability of the object's composition
If millimeter wave beams are used to provide uniform network coverage, then coverage uniformity is improved, but signal reliability deteriorates due to obstructions blocking the beams
Solution Approach 1:
The system performs preliminary identification of obstructions and blockage-prone zones using channel state information before signal transmission. By anticipating potential blockages and pre-configuring resource allocation strategies for identified problematic zones, the system can maintain signal reliability even when obstructions occur, while preserving the uniform coverage characteristics of millimeter wave beams.
Solution Approach 2:
The patent implements continuous feedback mechanisms where channel state information is monitored in real-time to detect obstructions and zone transitions. This feedback enables dynamic adjustment of resource allocation and beam parameters to compensate for blockages, maintaining both coverage uniformity and signal reliability despite the presence of obstructions in the millimeter wave path.
3Reliability
If additional resources are allocated to compensate for blockages, then signal quality is maintained, but network resource efficiency decreases
Solution Approach 1:
Additional resources are allocated only to specific zones identified as having blockage problems or poor signal quality, rather than uniformly across the entire coverage area. This localized resource allocation maintains signal quality in problematic zones while minimizing the overall consumption of network resources, thereby resolving the contradiction between reliability and productivity.
Solution Approach 2:
The system applies resource allocation adjustments selectively and partially - only to the extent necessary to compensate for identified blockages or signal quality issues in specific zones. This partial action approach maintains adequate signal quality without excessively allocating resources across the entire network, thus preserving overall network resource efficiency.
Data Source
AI summary
A method and an apparatus are provided for receiving resource allocation information by a user equipment (UE) in a wireless communication system. Channel state information (CSI) is transmitted to a first base station. The resource allocation information indicating resources for a first zone to the UE is received from the first base station, when the UE enters the first zone among a plurality of zones within a cell coverage of the first base station. Additional resource allocation information indicating additional resources for a second zone are received from a second base station, if it is estimated that the UE might enter the second zone among the plurality of zones based on a status of the second zone and a moving direction of the UE. The additional resources are received in response to a message, transmitted from the first base station, to the second base station, requesting the additional resources.