Common Beam Training for Component Carriers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication systems face challenges in efficiently training beams for multiple component carriers, especially when user equipment (UE) has limited radio frequency (RF) chains, leading to suboptimal signal reception and transmission due to the complexity of beamforming and carrier aggregation.
Innovation Solution
The described techniques implement common beam training methods that allow for concurrent beam training across multiple component carriers using shared receive and transmit beams, optimizing beam refinement through reference signal measurements and indications from base stations to UEs, enabling improved signal quality and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming is implemented for multiple component carriers, then signal quality and spectral efficiency are improved, but device complexity and hardware demands increase
Solution Approach 1:
The patent merges beam training operations across multiple component carriers by identifying and utilizing common beams that can serve multiple carriers simultaneously. This reduces the total number of beam training operations and hardware resources needed, while still achieving reliable signal quality across all carriers through shared beam resources.
Solution Approach 2:
The patent implements universal beam training where a single beam training procedure serves multiple component carriers. The base station and UE perform beam training that results in beam configurations that can be applied across multiple carriers, making the beamforming system multi-functional and reducing hardware complexity.
2Reliability
If separate beam training is performed for each component carrier, then optimal beam configuration is achieved, but training time and overhead increase
Solution Approach 1:
The patent combines beam training operations for multiple component carriers into a single unified training procedure. Instead of performing separate beam training for each carrier, the system performs one joint beam training that identifies common beams applicable to multiple carriers, significantly reducing training time and overhead.
Solution Approach 2:
The patent performs preliminary identification of common beams across multiple component carriers before actual data transmission begins. By pre-establishing the beam configurations that work across multiple carriers, the system avoids repeated training overhead during operation, saving time while maintaining optimal beam configuration.
3Device complexity
If UE has limited RF chains, then device complexity is reduced, but ability to receive multiple component carriers on unique beams is compromised
Solution Approach 1:
The patent enables a single RF chain to serve multiple component carriers by establishing common beams that work across all carriers. The same RF chain and beam configuration can handle multiple carriers sequentially or concurrently, making the limited hardware resource multi-functional and maintaining adaptability despite reduced complexity.
Solution Approach 2:
The patent merges the reception of multiple component carriers through a shared beam and RF chain configuration. Instead of requiring separate RF chains for each carrier, the system combines carrier reception through common beam resources, allowing limited RF chains to handle multiple carriers efficiently.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. The described techniques provide for training a beam for multiple component carriers (CCs) for concurrent communications in a wireless communications system associated with limited user equipment (UE) capabilities. The UE receives, via a first receive beam, a first reference signal on a group of CCs over a first symbol. The UE also receives, via a second receive beam, a second reference signal on the group of CCs over a second symbol. The UE selects a receive beam for a subsequent communication based on determining a value of a parameter for each of the first and the second receive beam.