Per-BWP MIMO Layer Indication for Capability-Based Configuration
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Solution Overview
Problem
Existing communication technologies face challenges in efficiently utilizing the per-BWP MIMO layer indication feature due to unclear capability handling between per-serving cell and per-BWP parameter settings, leading to inefficiencies in power consumption and operation.
Innovation Solution
The introduction of a second capability indication for maximum MIMO layers per bandwidth part (BWP) alongside the existing indication for serving cell configuration, allowing networks to configure and manage MIMO layers per BWP efficiently, ensuring proper operation and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If per-BWP MIMO layer indication feature is introduced, then network performance and configuration efficiency are improved, but device complexity and operation difficulty increase
Solution Approach 1:
The patent segments the MIMO layer configuration into two distinct levels: per-serving cell configuration (maxMIMO-Layers) and per-bandwidth part configuration (maxMIMO-Layers-BWP). This segmentation allows the system to maintain both coarse-grain cell-level management and fine-grain BWP-level optimization, resolving the contradiction by enabling detailed control without overwhelming device complexity through structured hierarchical management.
Solution Approach 2:
The patent introduces dynamic capability indication where the UE can signal support for per-BWP MIMO layer configuration through capability messages. This dynamic approach allows the network to adaptively enable or disable per-BWP configuration based on UE capabilities, improving network performance for advanced devices while maintaining compatibility with simpler devices, thus resolving the complexity-performance tradeoff.
2Use of energy by moving object
If per-BWP MIMO layer configuration is implemented, then power consumption is reduced through optimized operation, but implementation complexity increases
Solution Approach 1:
The patent applies local quality by allowing different MIMO layer configurations for different bandwidth parts within the same serving cell. Each BWP can be independently configured with appropriate maxMIMO-Layers-BWP parameters, enabling the system to optimize power consumption for specific BWPs (e.g., using fewer layers for coverage-enhanced BWPs) while maintaining high performance for other BWPs, thus reducing overall power consumption without requiring complete system redesign.
3Manufacturing precision
If dual capability indication (per-cell and per-BWP) is required, then configuration precision is improved, but operation difficulty increases
Solution Approach 1:
The patent implements preliminary action by having the UE indicate its capability support for per-BWP MIMO configuration in advance through capability indication messages before actual configuration occurs. The network uses this preliminary capability information to determine whether to proceed with per-BWP configuration, avoiding operation difficulties by pre-filtering incompatible devices and establishing clear capability-based configuration paths.
Data Source
AI summary
There is provided a method of operating a wireless device, UE, in a communication network. The method includes transmitting, to the communication network, a first capability indication that indicates that the UE supports a maximum number of MIMO layers for a serving cell configuration on a carrier and the second capability indication that indicates that the UE supports a maximum number of MIMO layers for a bandwidth part, BWP, of the serving cell. The method further includes receiving a configuration that includes a first higher layer parameter associated with the maximum number of MIMO layers for a serving cell and a second higher layer parameter associated with the maximum number of MIMO layers for a specific BWP part of the serving cell, wherein the configuration is based on the first capability indication and the second capability indication. Furthermore, there is provided a UE, a RAN node and a method therefore.