TDD Uplink and Downlink BWP Configuration for Lower Emissions
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently configuring uplink and downlink bandwidth parts (BWPs) for time division duplex bands, particularly in managing emissions and power consumption, with existing methods often requiring significant maximum power reduction (MPR) and additional MPR to meet emissions constraints.
Innovation Solution
Configuring uplink and downlink BWPs with a common local oscillator (LO) frequency at the center of the uplink BWP and using a smaller baseband transmit filter bandwidth, allowing for reduced MPR and A-MPR to meet emissions requirements while maintaining different BWP configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional BWP configuration methods are used for time division duplex bands, then emissions constraints can be met, but significant maximum power reduction (MPR) and additional MPR are required which increases power consumption
Solution Approach 1:
The patent applies parameter changes by configuring the uplink BWP with a smaller bandwidth parameter compared to the downlink BWP. Specifically, the uplink BWP bandwidth is set to a first bandwidth value while the downlink BWP bandwidth is set to a second bandwidth value, where the first bandwidth is less than the second bandwidth. This parameter adjustment allows the system to meet emissions constraints without requiring significant MPR, thereby reducing power consumption while maintaining compliance with regulatory standards
2Productivity
If different BWP configurations are used for uplink and downlink, then system efficiency and emissions management are optimized, but configuration complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the BWP configuration into distinct uplink and downlink components with different bandwidth parameters. The uplink BWP is configured with a first bandwidth suitable for uplink transmissions while the downlink BWP is configured with a second bandwidth for downlink transmissions. This segmentation allows each direction to be optimized independently for its specific requirements, improving overall system efficiency while managing emissions, and the complexity is controlled through standardized configuration procedures
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for configuring an uplink bandwidth part (BWP) and a downlink BWP. One method includes configuring, at a communication device, a downlink BWP for a time division duplex band. The method includes configuring an uplink BWP for the time division duplex band. The uplink BWP is different from the downlink BWP.