Carrier Aggregation Capability Reporting for PA-Aware Scheduling
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Solution Overview
Problem
Existing carrier aggregation (CA) technologies in wireless communication systems lack flexibility in resource configuration due to limitations in reporting multiple-input multiple-output (MIMO) layer quantities and power amplifier (PA) capabilities, leading to inefficient utilization of CA resources.
Innovation Solution
A communication method and apparatus that allows a terminal device to report frequency separation classes and PA architectures to a network device, enabling flexible CA resource configuration by indicating support for single or multiple PAs and varying MIMO layer capabilities, thereby optimizing CA configurations based on the terminal device's capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the terminal device reports only one MIMO layer quantity capability for each CC in one CA configuration, then the reporting complexity is reduced, but the network device cannot flexibly configure CA resources based on different PA architectures
Solution Approach 1:
The patent segments the MIMO layer quantity capability reporting by PA architecture type. The terminal device reports separate MIMO layer quantity capabilities for single-PA architecture and multi-PA architecture scenarios. This segmentation allows the network device to select appropriate capabilities based on the configured PA architecture, resolving the contradiction between simplified reporting and flexible configuration.
Solution Approach 2:
The patent introduces dynamic capability reporting where the terminal device provides different MIMO layer quantity capabilities depending on the PA architecture configuration. The network device dynamically selects which capability parameter to use based on whether single-PA or multi-PA architecture is configured, enabling adaptive resource allocation without increasing overall reporting complexity.
2Device complexity
If the terminal device uses a single PA to process CA with large frequency separation, then the device complexity is reduced, but the supported frequency separation range is limited
Solution Approach 1:
The patent changes the parameter of PA architecture from fixed to variable. The terminal device configures different PA architectures (single-PA or multi-PA) based on the frequency separation requirements. When frequency separation is within a certain range, single-PA is used for simplicity; when frequency separation exceeds this range, multi-PA is activated to extend support, thus resolving the contradiction between device complexity and frequency separation support range.
3Ease of operation
If the network device configures CA resources without considering PA architecture capabilities, then the configuration process is simplified, but the CA resource utilization efficiency decreases
Solution Approach 1:
The patent implements feedback mechanism where the terminal device reports its PA architecture capabilities (single-PA or multi-PA support) and corresponding MIMO layer quantity capabilities to the network device. The network device uses this feedback information to make informed configuration decisions, selecting appropriate CA resources that match the terminal's PA architecture, thus improving resource utilization without significantly complicating the configuration process.
Data Source
AI summary
A method and apparatus. The method includes: a terminal device sends a carrier aggregation (CA) capability reporting message to a network device, where the CA capability reporting message includes a frequency separation class of each of at least one radio frequency (RF) channel of the terminal device and a power amplifier (PA) architecture of the terminal device. The PA architecture indicates that the PA architecture that can be used by the terminal device to support CA is a single PA and/or a plurality of PAs. The network device can improve CA resource configuration flexibility by using the foregoing method.