Single-Antenna RedCap Measurement Margins for 5G NR RRM
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Solution Overview
Problem
Existing 3GPP standards for 5G NR systems do not adequately address the radio resource management (RRM) requirements for reduced capability (RedCap) devices with single receive antennas, leading to inefficiencies in resource allocation and measurement accuracy.
Innovation Solution
Define new measurement thresholds and criteria for RedCap UEs with a single receive antenna, incorporating a 1 Rx offset to improve RRM by relaxing or conserving measurement times for neighbor cell detection, beam failure detection, radio link management, and small data transmission, aligning with 3GPP TS 38.133 standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standard 3GPP RRM measurement criteria are applied to RedCap UEs with single receive antennas, then measurement accuracy deteriorates, but device complexity and resource allocation efficiency worsen
Solution Approach 1:
The patent modifies RRM measurement parameters by introducing a 1 Rx offset that adjusts threshold values specifically for single-antenna RedCap UEs. This parameter change enables accurate measurements without requiring multiple receive antennas, thereby improving measurement precision while reducing device complexity requirements.
2Loss of time
If relaxed measurement criteria are applied to RedCap UEs, then measurement time is reduced, but communication reliability deteriorates
Solution Approach 1:
The patent applies different measurement criteria to different device types by introducing device-specific offsets. For RedCap UEs with single receive antennas, a 1 Rx offset is applied to adjust thresholds, allowing relaxed measurement times while maintaining communication reliability through device-specific optimization rather than uniform treatment.
3Device complexity
If single antenna configuration is used for RedCap devices, then device complexity and cost are reduced, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent changes RRM measurement parameters by introducing a 1 Rx offset that compensates for the limitations of single-antenna configurations. This enables RedCap devices with reduced complexity to achieve resource allocation efficiency comparable to multi-antenna devices by adjusting measurement thresholds and criteria.
4Measurement precision
If standard measurement thresholds are used for RedCap UEs, then measurement precision is maintained, but power consumption increases
Solution Approach 1:
The patent applies device-specific measurement criteria with a 1 Rx offset tailored to RedCap UEs with single receive antennas. This localized optimization allows these devices to maintain measurement precision while consuming less power by using adjusted thresholds that reflect their hardware capabilities rather than forcing standard multi-antenna measurement protocols.
Data Source
AI summary
Embodiments attempt to solve challenges in a wireless communications system. Embodiments describe various techniques, systems, and devices to support relaxed measurement criteria for reduced capability devices in a 3GPP 5G NR system, among other wireless communications systems. Other embodiments are described and claimed.