Dynamic Antenna Reconfiguration for Wireless Bandwidth and Interference
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Solution Overview
Problem
Existing wireless networks face challenges in dynamically reconfiguring transmit antennas to meet increasing bandwidth demands due to limitations in antenna assignment and compatibility with newer user equipment (UE) that require UE-specific reference signals, leading to interference and saturation issues in cell splitting.
Innovation Solution
The solution involves dynamically assigning antennas to two logical groups: one for transmitting common reference signals and data in a specific format, and another for transmitting data in a different format without common reference signals or system information, based on network operational status, allowing for flexible antenna configuration and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cell splitting is used to increase bandwidth capacity, then spectrum efficiency is improved, but adjacent cell interference increases and cell splitting gain saturates
Solution Approach 1:
The patent applies dynamics by enabling base stations to dynamically switch between different transmission modes (single-antenna port and multi-antenna port) based on real-time network conditions and UE capabilities. This dynamic reconfiguration allows the system to adapt antenna assignments to optimize bandwidth capacity while managing interference, preventing cell splitting gain saturation by flexibly adjusting transmission parameters rather than relying solely on increasing the number of split cells
Solution Approach 2:
The patent changes key transmission parameters including antenna port configurations, reference signal assignments, and data format selections. By modifying these parameters dynamically based on network operational status, the system can increase bandwidth capacity through more efficient spectrum utilization without proportionally increasing adjacent cell interference, thus overcoming the saturation effect of traditional cell splitting
2Productivity
If multiple transmit antennas are deployed to meet bandwidth demands, then spectrum efficiency is improved, but device complexity and antenna assignment limitations increase
Solution Approach 1:
The patent segments the antenna system into distinct antenna ports with specific functions. Each antenna port is configured to transmit specific reference signals and data formats based on UE capability. This segmentation simplifies the overall antenna assignment complexity by creating modular, functionally-defined antenna groups rather than managing complex individual antenna assignments, enabling efficient use of multiple transmit antennas while maintaining manageable system complexity
Solution Approach 2:
The patent implements multi-functionality by designing antenna ports that can serve multiple purposes: transmitting common reference signals, UE-specific reference signals, and data in different formats depending on UE capability and network conditions. This universal approach allows the same physical antenna infrastructure to support both legacy and newer UEs simultaneously, improving spectrum efficiency without proportionally increasing device complexity
3Adaptability or versatility
If antennas are assigned to transmit common reference signals and data, then legacy UE compatibility is maintained, but bandwidth efficiency is reduced due to format limitations
Solution Approach 1:
The patent applies dynamics by enabling base stations to switch transmission formats and antenna port configurations based on detected UE capabilities. When newer UEs are detected, the system dynamically transitions to more efficient data formats that utilize multiple antenna ports, thereby improving bandwidth efficiency while maintaining compatibility with legacy UEs that continue to receive service in traditional formats
Solution Approach 2:
The patent applies local quality by providing different transmission qualities and formats to different UEs based on their capabilities. Newer UEs receive enhanced transmission with multiple antenna ports and efficient data formats, while legacy UEs receive traditional single-antenna port transmissions. This localized differentiation optimizes overall bandwidth efficiency without sacrificing legacy UE compatibility
Data Source
AI summary
A wireless communication technique includes configuring a first antenna group to transmit common system information, a common reference signal, and data according to a first format and a second format to wireless devices in a cell, configuring a second antenna group to transmit data according to the second format, but no common system information or common reference signals, to wireless devices in the cell and dynamically assigning, based on a network operational status, antennas from a plurality of antennas to either the first antenna group or the second antenna group.