Multiple Active BWP Management for Diverse 5G Numerologies
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Solution Overview
Problem
Existing wireless communication systems, such as 5G NR Release 15, only allow one active bandwidth part (BWP) at a time, limiting the ability to support services requiring different numerologies, and future releases lack defined layer 2 procedures for managing multiple active BWPs.
Innovation Solution
Implement methods and apparatuses for efficient management of multiple active BWPs by configuring a serving cell with multiple active BWPs, including logical channel prioritization, uplink power control, pathloss reference determination, configured grants, HARQ protocol operation, and maintenance of BWPs in inactive states, with signaling mechanisms for activating and deactivating these BWPs as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If only one active bandwidth part (BWP) is allowed at a time, then system complexity is reduced and procedures are simpler, but the ability to support services requiring different numerologies is limited
Solution Approach 1:
The patent segments the bandwidth into multiple Bandwidth Parts (BWPs), each configured with different numerologies to support diverse services. Multiple BWPs can be simultaneously active, with each BWP handling specific service requirements independently, thus enabling service diversity without overwhelming system complexity through structured segmentation.
Solution Approach 2:
The patent introduces a new dimension of operation by allowing multiple BWPs to be active simultaneously rather than sequentially switching between them. This dimensional change from single-active-BWP to multi-active-BWP enables parallel support for different numerologies and services, significantly improving adaptability while managing complexity through standardized procedures.
2Adaptability or versatility
If multiple active BWPs are permitted, then services with different numerologies can be supported simultaneously, but layer 2 procedures and signaling become undefined and more complex
Solution Approach 1:
The patent establishes universal layer 2 procedures that can handle multiple active BWPs through standardized mechanisms. Configured grants, HARQ operations, and BWP switching procedures are designed to work across multiple BWPs simultaneously, providing multi-functional capability that manages complexity through standardization rather than requiring separate procedures for each BWP combination.
Solution Approach 2:
The patent manages complexity by dynamically adjusting parameters such as BWP activation states, configured grant associations, and HARQ process mappings based on service requirements. Through controlled parameter changes and state transitions, the system can support multiple numerologies while maintaining manageable layer 2 procedures through systematic parameter management.
3Productivity
If multiple configured grants are associated with multiple active BWPs, then bandwidth adaptation efficiency is improved, but grant management and activation control become more complex
Solution Approach 1:
The patent employs preliminary action by pre-configuring multiple granted resources across multiple BWPs before they are needed. Configured grants are established in advance for each BWP, and when BWPs are activated, the associated grants are automatically made available, eliminating the need for dynamic grant requests and improving bandwidth adaptation efficiency while simplifying real-time management through pre-planning.
Solution Approach 2:
The patent implements feedback mechanisms where the system monitors BWP activation states and automatically adjusts configured grant associations accordingly. When BWPs are activated or deactivated, the system provides feedback to update which configured grants are active, ensuring proper resource allocation without manual intervention and managing complexity through automated feedback-driven control.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for efficient management of multiple active BWPs. One apparatus includes a memory comprising instructions executable by a processor to cause the apparatus to receive a configuration for a plurality of bandwidth parts (“BWPs”) for the serving cell, where the configuration indicates a mapping between a respective BWP and a corresponding logical channel. The instructions are executable by the processor to cause the apparatus to receive an uplink grant of uplink resources on at least one of the plurality of BWPs and prioritize data for uplink transmission on the uplink grant based at least in part on the mapping between the respective BWP and the corresponding logical channel.