Uplink Switch Mode Selection for Wireless UE Duplex Configuration
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Solution Overview
Problem
Current wireless communication technologies face challenges in efficiently managing uplink duplex configurations, leading to suboptimal performance due to static selection of mapping types across all user equipment (UEs), which can result in mismatched capabilities and unnecessary resource utilization or interruptions in downlink transmissions.
Innovation Solution
A method where user equipment (UE) and base stations (BS) dynamically select between memory-based and memoryless-based uplink switch modes based on UE capability indicators, allowing for switching between different uplink duplex configurations to optimize transmit chain mappings and minimize disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a static mapping type is selected for all UEs, then the system complexity is reduced, but the uplink duplex configuration performance deteriorates due to capability mismatch
Solution Approach 1:
The patent implements dynamic selection of mapping types (first or second mapping) based on UE capability indicators and network configuration. The UE can switch between different uplink duplex configurations (FDD-TDD, TDD-FDD, TDD-TDD) depending on the selected mapping type, allowing the system to adapt to varying UE capabilities and network conditions rather than using a static configuration for all UEs.
Solution Approach 2:
The patent changes the mapping type parameter (first mapping or second mapping) based on UE capability indicators. This parameter change enables different uplink duplex configurations to be applied dynamically, resolving the contradiction between system simplicity and configuration performance by introducing a controllable parameter that adjusts to UE capabilities.
2Productivity
If dynamic uplink duplex configuration switching is implemented, then the uplink performance is improved, but the device complexity increases due to multiple configuration states
Solution Approach 1:
The patent introduces dynamic switching between first and second mapping types based on UE capability indicators and network signaling. This dynamic capability allows the UE to optimize uplink performance by selecting the appropriate mapping type and corresponding duplex configuration (FDD-TDD, TDD-FDD, or TDD-TDD) without requiring complex manual configuration, as the switching is driven by standardized signaling procedures.
Solution Approach 2:
The patent makes the UE capable of operating in multiple uplink duplex configurations (FDD-TDD, TDD-FDD, TDD-TDD) through a universal switching mechanism controlled by mapping type selection. This multi-functionality allows a single UE to adapt to different network scenarios and carrier configurations without requiring separate hardware for each configuration type.
3Manufacturing precision
If UE capability indicators are used for mapping type selection, then the configuration accuracy is improved, but the signaling overhead increases
Solution Approach 1:
The patent uses UE capability indicators to determine the appropriate mapping type (first or second mapping), enabling accurate configuration matching to UE capabilities. The capability indicators serve as parameters that guide the selection process, ensuring that the chosen mapping type and corresponding duplex configuration are optimally suited to the UE's technical capabilities.
Solution Approach 2:
The patent implements a feedback mechanism where the UE reports its capability indicators to the network, and the network uses this feedback to select the appropriate mapping type and notify the UE of the selection. This feedback loop ensures accurate configuration matching while maintaining efficient signaling through standardized reporting and selection procedures.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a base station (BS), a UE capability indicator of a capability of the UE. The BS may select an uplink switch mode. The UE may receive, from the BS, signaling identifying the uplink switch mode, of a plurality of uplink switch modes, for switching one or more transmit chains of the UE between a first uplink duplex configuration and a second uplink duplex configuration. The UE may switch at least one uplink duplex configuration of at least one transmit chain of the UE based at least in part on the uplink switch mode. Numerous other aspects are provided.