Coded Split Beam MIMO Subsector Grouping
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Solution Overview
Problem
Existing beamforming technologies in MIMO systems face challenges in reducing beam interference, leading to suboptimal performance due to minimal separation between beams.
Innovation Solution
A coded split beam system is implemented, where a threshold number of user devices are determined and grouped into subsectors with a minimum distance between them, allowing for increased separation between beams and reduced interference by transmitting signals based on specific codes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If beams are transmitted in a traditional MIMO system, then signal coverage is provided, but beam interference increases due to minimal separation between beams
Solution Approach 1:
The patent divides the traditional beam system into subsectors by splitting the beamforming process. Users are grouped into subsectors based on their locations, and beams are transmitted separately to each subsector. This segmentation increases the effective separation between beams, reducing interference while maintaining coverage.
Solution Approach 2:
The patent applies different beamforming strategies to different subsectors based on local user distributions. Each subsector receives customized beam transmission tailored to its specific user locations and interference characteristics, optimizing performance for each local region while reducing overall interference.
2Area of stationary object
If beams are transmitted with minimal separation to cover more areas, then coverage is improved, but interference between adjacent beams increases
Solution Approach 1:
The patent segments the coverage area into subsectors and transmits beams to each subsector separately. This allows the system to maintain comprehensive coverage while reducing interference by preventing simultaneous beam transmission in adjacent sectors.
Solution Approach 2:
The patent implements periodic beam transmission to different subsectors in a sequential manner. Instead of transmitting to all sectors simultaneously, the system cycles through subsectors, allowing beams to be transmitted with effective temporal and spatial separation, thereby reducing interference.
3Reliability
If traditional beamforming is used, then system complexity is low, but performance is suboptimal due to inability to reduce beam interference
Solution Approach 1:
The patent performs preliminary user location determination and subsector grouping before beam transmission. Users are pre-categorized into subsectors based on their locations, and beam transmission is then organized accordingly. This preliminary organization simplifies the overall beam control process while improving performance.
Solution Approach 2:
The patent incorporates feedback mechanisms to monitor beam interference and adjust transmission parameters. The system uses feedback information about user locations and interference conditions to optimize beamforming parameters dynamically, improving performance while managing complexity through adaptive control.
Data Source
AI summary
Systems and methods provided for transmitting a set of signals to one or more user devices based on a coded split beam system include one or more user devices, an antenna, and a cell site. The cell site includes a beam control system communicatively coupled to the antenna and the one or more user devices. The beam control system is to determine a threshold number of user devices in a sector, determine a location corresponding to the user devices, determine a first set of the user devices are disposed in a first set of subsectors and a secondary set of the user devices are disposed in a secondary set of subsectors, and transmit a first set of signals to the first set of the user devices based on a first code and a secondary set of signals to the secondary set of the user devices based on a secondary code.