UE TR Capability Signaling for Low-PAPR Uplink Coverage
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Solution Overview
Problem
The complexity of implementing tone reservation (TR) technology in user equipment (UE) for improving 5G uplink coverage is high, leading to difficulties in enhancing uplink transmission performance due to increased peak-to-average ratio (PAPR) and power consumption.
Innovation Solution
User equipment (UE) and network devices communicate capability information to configure TR technology-based uplink transmission, reducing complexity by scheduling parameters that align with UE capabilities, thereby lowering PAPR and improving coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If TR technology is implemented to improve uplink coverage, then uplink coverage performance is improved, but device complexity and implementation difficulty increase
Solution Approach 1:
The network device performs preliminary actions by determining the UE's TR capability before scheduling uplink transmission. The network device sends capability query signaling to obtain TR capability information, then pre-configures appropriate scheduling parameters based on this capability. This preliminary assessment and configuration prevents complex TR implementation issues during actual transmission, as the network device already knows whether to apply TR-based scheduling and what parameter configurations are suitable.
Solution Approach 2:
The patent implements dynamic adaptation through capability-based scheduling. The network device dynamically adjusts scheduling parameters according to the UE's reported TR capability. For UEs with TR capability, the network device configures TR-based scheduling with specific parameters; for UEs without TR capability, conventional scheduling is used. This dynamic configuration optimizes both coverage performance and implementation complexity by matching the scheduling approach to each UE's capabilities.
2Manufacturing precision
If TR technology is implemented to reduce PAPR, then uplink transmission signal quality is improved, but ease of operation decreases
Solution Approach 1:
The UE performs self-service by autonomously determining its own TR capability and reporting it to the network device. The UE internally assesses whether it supports TR technology and communicates this capability through capability signaling. This self-determination and self-reporting mechanism simplifies operation, as the UE independently manages its capability information without requiring complex external configuration or manual intervention.
Solution Approach 2:
The patent implements feedback mechanisms where the UE reports its TR capability to the network device, and the network device uses this feedback to configure appropriate scheduling parameters. The capability query and reporting process creates a feedback loop that enables the network device to adapt its scheduling decisions based on actual UE capabilities, thereby simplifying the overall system operation while maintaining signal quality.
3Reliability
If TR technology is implemented to improve coverage, then uplink transmission performance is improved, but power consumption increases
Solution Approach 1:
The patent applies parameter changes by configuring specific scheduling parameters based on TR capability. When TR is supported, the network device configures parameters such as subcarrier spacing, resource block allocation, and modulation schemes that are optimized for TR-based transmission. These parameter adjustments enable the system to achieve improved coverage through TR while managing power consumption by selecting energy-efficient parameter combinations suitable for TR operation.
Data Source
AI summary
Embodiments of this application provides a communication method. A network device sends capability query signaling to user equipment (UE), where the UE receives the capability query signaling from the network device. The UE sends first capability signaling to the network device, where the first capability signaling indicates first capability information indicating that the UE supports a tone reservation (TR) technology, and the network device receives the first capability signaling from the UE.