Multi-Band Uplink Switching With Flexible Tx-Chain Configuration
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in signal transmission and reception, particularly in managing uplink switching across multiple bands, limiting throughput and spectrum utilization in diverse frequency ranges.
Innovation Solution
A method and apparatus for configuring uplink bands and enabling uplink switching with flexible transmission chain configurations, allowing for efficient signal transmission and reception across multiple bands, including options for 2-port transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If uplink switching is performed across multiple bands with flexible transmission chain configurations, then signal transmission efficiency and spectrum utilization are improved, but device complexity and configuration management difficulty increase
Solution Approach 1:
The patent implements dynamic uplink switching that allows the UE to flexibly switch between different uplink bands (first band, second band, third band) and transmission configurations based on real-time conditions. The transmission chain configuration can be dynamically adjusted between 1-port and 2-port modes, enabling the system to adapt to varying spectrum conditions and optimize signal transmission efficiency across different frequency ranges.
Solution Approach 2:
The patent divides the uplink transmission system into multiple independent bands (first band, second band, third band) that can be configured and switched independently. Each band can operate with its own transmission parameters, allowing the system to segment the complex multi-band operation into manageable units that can be controlled and optimized separately, thus improving overall system productivity.
2Adaptability or versatility
If at least three uplink bands are configured for uplink switching, then spectrum utilization is improved, but the complexity of managing transmission chains increases
Solution Approach 1:
The patent creates a universal uplink switching framework that can operate across at least three different uplink bands using a common transmission chain configuration mechanism. The same UE and base station infrastructure can handle multiple bands and switch between them using unified configuration parameters, allowing the system to serve multiple frequency ranges with a single versatile platform rather than requiring separate dedicated systems for each band.
Solution Approach 2:
The patent utilizes parameter-based configuration to manage the complexity of multi-band operation. By defining specific parameters that control transmission chain configuration (such as indicating whether 2-port transmission is allowed on the second band), the system can switch between different operational modes and bands through parameter adjustments rather than fundamental architectural changes, thereby improving adaptability while controlling complexity.
Data Source
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Figure 3~4(b)
AI summary
A method and a device for transmitting/receiving signals in a wireless communication system, disclosed in the present specification, allow uplink switching to be performed between three or more bands. Even if a specific option associated with uplink switching is configured in a terminal, the status of Tx chains according to whether two-port transmission in each band is permitted can be reported/configured.