RF Lens Beam-State Antenna for High-SINR Mobile Coverage
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Solution Overview
Problem
The increasing number of user equipment and demand for higher throughput and capacity in cellular networks lead to increased interference between beams, resulting in poor signal-to-noise and interference ratio (SINR), especially in areas where beams cross over, and lack of standardization for beam selection, which limits network performance.
Innovation Solution
Implementing an RF lens antenna system with multiple sets of beams, allowing for two or more beam states to be selectively activated, providing high SINR over a wide angle range by minimizing side lobe interference and enabling efficient coverage with fewer physical cell sites, thereby increasing capacity without expanding the network footprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If more beams/sectors/radios are deployed to increase network capacity and throughput, then network capacity and throughput are improved, but interference between beams increases and SINR deteriorates
Solution Approach 1:
The patent implements periodic switching between different beam sets in a time-division manner. Instead of having multiple beams continuously active simultaneously, the system activates one beam set during a specific time period, then switches to another beam set in the next time period. This periodic activation pattern ensures that while multiple beams are available to maintain high network capacity, only one beam set is active at any given moment, thereby eliminating inter-beam interference and maintaining high SINR.
2Area of stationary object
If multiple static beams are used to cover different geographical locations, then coverage capacity is improved, but SINR is reduced due to overlapping beams
Solution Approach 1:
The patent transitions from static beams to dynamic beam switching. The system employs multiple beam sets that can be selectively activated based on spatial and temporal conditions. Each beam set is designed to cover specific geographical areas, and the system dynamically switches between beam sets to serve different locations at different times. This dynamic approach allows the network to provide comprehensive coverage across multiple geographical areas while ensuring that only one beam set is active at a time, preventing beam overlap and maintaining high SINR in each coverage area.
3Object-affected harmful factors
If a single non-static beam is used to move and shape coverage, then SINR is improved by having only one sector active, but capacity is limited and adjacent cell interference remains
Solution Approach 1:
The patent segments the coverage area into multiple distinct beam sets, where each beam set is optimized to cover specific geographical locations or sectors. Instead of using a single moving beam that sequentially serves different areas, the system divides the coverage responsibility among multiple beam sets that can be independently activated. This segmentation allows the network to maintain the SINR benefits of having only one beam set active at a time while simultaneously providing capacity benefits by having multiple specialized beam sets available to serve different user groups in different locations concurrently through time-division multiplexing.
Data Source
AI summary
A multi-beam communication system uses an array of antenna assemblies, and RF elements, to provide two or more sets of multiple beams, where each individual set of beams can be considered a beam state. An antenna assembly has a first set of RF elements oriented to produce a first beam state, and a second set of RF elements oriented to produce a second beam state. Each set of RF elements comprise a set of output sectors, where a controller is configured to selectively activate a beam state.