Bandwidth Part Configuration for 5G Variable Bandwidth Support
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Solution Overview
Problem
The existing wireless communication systems, particularly LTE, are limited by a bandwidth of 20 MHz, and as 5G systems transition to wider bandwidths in mmWave spectrum, there is a need for efficient mechanisms to support variable bandwidths in user equipment (UE) and base stations, including search space configurations and resource allocation.
Innovation Solution
The method and apparatus involve configuring and managing Bandwidth Parts (BWP) for UEs, employing group-based BWP-specific interleaving, multiple interleavers, and dynamic BWP activation/deactivation to optimize resource allocation and support diverse bandwidth capabilities, while ensuring efficient power usage and interference management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the system transitions to wider bandwidths in mmWave spectrum to meet growing data traffic demand, then data rate is improved, but device complexity and power consumption increase
Solution Approach 1:
The wide bandwidth is divided into multiple Bandwidth Parts (BWPs), each representing a subset of the total bandwidth. This segmentation allows the system to manage wide bandwidths by treating them as multiple manageable units, reducing the complexity of bandwidth management while enabling high data rates through selective activation of multiple BWPs
Solution Approach 2:
The system dynamically activates and deactivates specific BWPs based on traffic requirements, channel conditions, and UE capabilities. This dynamic approach allows the system to adapt bandwidth utilization in real-time, maintaining high productivity when needed while reducing device complexity and power consumption during low-traffic periods
2Adaptability or versatility
If the system supports variable bandwidths in user equipment to meet diverse bandwidth requirements, then adaptability is improved, but device complexity increases
Solution Approach 1:
The Bandwidth Part framework provides a universal mechanism that enables a single UE to support multiple bandwidth configurations. By defining BWPs as standardized units with specific parameters, the system achieves versatility in supporting different bandwidth requirements without requiring separate specialized configurations for each scenario
Solution Approach 2:
The system changes operational parameters by activating different BWPs with varying bandwidth sizes, frequency locations, and subcarrier spacings. This parameter-based approach allows flexible adaptation to diverse requirements while maintaining a unified configuration framework, managing complexity through standardized parameter sets
3Productivity
If the system monitors wide bandwidth continuously to support high data rates, then data rate capability is improved, but power consumption increases
Solution Approach 1:
Instead of continuous monitoring, the system periodically activates specific BWPs based on traffic patterns and channel conditions. This periodic activation allows the UE to maintain high data rate capability when needed while consuming less power during periods when full bandwidth monitoring is not required
Solution Approach 2:
The system monitors only the necessary portion of the bandwidth at any given time by activating specific BWPs rather than monitoring the entire wide bandwidth continuously. This partial monitoring approach maintains adequate data rate capability while significantly reducing power consumption compared to full bandwidth monitoring
Data Source
AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services.