Concurrent LNA Gain Adjustment for Carrier Aggregation SINR
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Solution Overview
Problem
In wireless communication networks, particularly in 5G technology, carrier aggregation (CA) with multiple antennas faces challenges in adjusting Low Noise Amplifier (LNA) and Power Amplifier gain states quickly enough to maintain optimal signal-to-interference plus noise ratio (SINR), leading to data degradation due to delays in updating gains across multiple carriers.
Innovation Solution
The implementation of dynamic reconfigurable triggers allows for concurrent adjustment of gain states of multiple LNAs and PAs during buffer periods when cyclic prefixes of component carriers overlap, using a single signal to optimize SINR without interrupting data reception or transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple LNA gain adjustments are performed sequentially across multiple component carriers, then each carrier can be optimized individually, but the total adjustment time increases causing data degradation
Solution Approach 1:
The patent combines multiple LNA gain adjustment operations into a single concurrent execution phase. When buffer periods of multiple component carriers overlap, the system merges the adjustment operations so that all LNAs are reconfigured simultaneously rather than sequentially, eliminating the cumulative delay while maintaining SINR optimization for each carrier.
Solution Approach 2:
The system performs gain adjustments during the buffer period that occurs before actual data reception on each component carrier. By preparing the LNA gain states in advance during this idle buffer time, the adjustments are completed before data transmission begins, preventing any impact on data throughput.
2Ease of operation
If separate control signals are used for each LNA adjustment, then each amplifier can be controlled independently, but the RFFE bus programming complexity increases
Solution Approach 1:
The patent implements a universal control signal mechanism that can address multiple LNAs simultaneously through a single RFFE bus transaction. The control signal is designed to be multi-functional, capable of specifying target LNA(s) and gain values in a unified format, thereby reducing the number of separate programming operations needed while maintaining independent control capability.
Data Source
AI summary
An aspect of the present disclosure includes methods, systems, and computer-readable media for triggering the single signal during the first buffer period to concurrently adjust a first plurality of gain states of a first plurality of low-noise amplifiers associated with a first expected reception of the first symbol on the first component carrier and a second plurality of gain states of a second plurality of low-noise amplifiers associated with a second expected reception of the second symbol on the second component carrier, and receiving the first symbol via the first component carrier and the second symbol via the second component carrier after the first buffer period.