Bandwidth Part Configuration Across Carriers With Reference RB Mapping
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Solution Overview
Problem
Conventional BWP configuration in high-bandwidth or high-frequency scenarios leads to resource scheduling inefficiencies and increased signaling overheads due to limitations on resource allocation and carrier-specific configurations.
Innovation Solution
Implementing BWP configuration based on a reference frequency domain location, allowing for flexible resource block allocation across multiple carriers without requiring carrier-specific configurations, using methods such as bitmaps and offset calculations to indicate resource block positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If BWP configuration is performed based on carrier-specific configured bandwidth in conventional technology, then resource allocation can be performed on each carrier independently, but signaling overheads increase and resource scheduling flexibility decreases in high-bandwidth scenarios
Solution Approach 1:
The patent merges multiple carrier configurations into a unified BWP configuration approach. Instead of configuring BWPs separately on each carrier based on individual carrier bandwidths, the invention configures a BWP that spans across multiple carriers using a single configuration message. This unified configuration reduces the number of separate configuration messages needed, thereby reducing signaling overheads while maintaining the ability to allocate resources flexibly across aggregated carriers.
Solution Approach 2:
The patent creates a universal BWP configuration mechanism that can operate across multiple carriers with different bandwidths. The BWP configuration is designed to be carrier-agnostic, using absolute resource block indices that can reference resource blocks on any carrier in the aggregation. This multi-functional approach allows the same configuration structure to serve multiple carriers simultaneously, reducing signaling overhead while preserving scheduling flexibility.
2Productivity
If carrier-specific BWP configuration is used, then each carrier can be optimized independently, but device complexity and scheduling complexity increase when managing multiple carriers
Solution Approach 1:
The patent combines multiple carrier management functions into a single BWP configuration framework. By using absolute resource block indices that are defined relative to a common reference point across all carriers, the system manages resources on multiple carriers through unified scheduling decisions rather than separate carrier-specific decisions. This merging of management functions reduces scheduling complexity while maintaining resource allocation efficiency.
Solution Approach 2:
The patent introduces absolute resource block indices as an intermediary mechanism between the BWP configuration and the physical resource blocks on multiple carriers. These absolute indices serve as a common reference system that mediates resource allocation across carriers with different bandwidths and configurations. This intermediary layer simplifies the scheduling process by providing a unified addressing scheme, reducing the complexity of managing multiple carriers while preserving the ability to allocate resources efficiently.
Data Source
AI summary
A communications method and apparatus. The method includes: determining configuration information of a bandwidth part (BWP), and sending the configuration information of the BWP. The BWP includes at least one resource block, the at least one resource block is located on at least one carrier, location information of different carriers in a system is determined based on a reference frequency domain location, and the configuration information of the BWP indicates a location of the at least one resource block based on the reference frequency domain location.