Antenna Configuration Selection for Multi-Chip Coexistence
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Solution Overview
Problem
Conventional antenna selection methods in user equipment (UE) with multiple communication chips lead to elevated specific absorption rate (SAR) conditions and coexistence issues, such as out-of-band emission and intermodulation distortion, when multiple communication chips operate concurrently.
Innovation Solution
A method for determining and configuring an optimal antenna configuration in a multi-antenna arrangement based on the usage of cellular, WiFi, and Bluetooth communication functionalities, considering coexistence conditions, using a selection table to minimize adverse effects by dynamically selecting antennas and adjusting power settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple communication chips independently select antennas for transmission diversity and reception diversity, then each communication chip achieves diverse signal reception and transmission, but the specific absorption rate (SAR) condition is elevated and coexistence issues such as out-of-band emission and intermodulation distortion occur
Solution Approach 1:
The patent merges the antenna selection decisions of multiple communication chips into a unified antenna configuration. Instead of each chip independently selecting antennas, the system combines the requirements of cellular, WiFi, and Bluetooth chips and determines a single antenna configuration that satisfies all chips simultaneously, thereby reducing SAR conditions and coexistence issues.
Solution Approach 2:
The patent implements a universal antenna configuration that serves multiple communication functionalities (cellular, WiFi, Bluetooth) simultaneously. The determined antenna configuration is universally applied across all communication chips, allowing them to operate concurrently without independent antenna selections, thus resolving the contradiction between diversity reception and harmful interference.
2Productivity
If each communication chip uses its own algorithm to dynamically select transmission antennas based on performance characteristics, then each chip optimizes its transmission performance independently, but adverse effects such as elevated SAR and coexistence conditions are introduced
Solution Approach 1:
The patent combines the antenna selection algorithms of multiple communication chips into a unified determination process. The system receives indications from all chips about their antenna usage requirements and determines a single antenna configuration that optimizes performance for all chips while avoiding harmful interactions like out-of-band emission and intermodulation distortion.
Solution Approach 2:
The patent introduces an intermediary coordination mechanism that mediates between the antenna selection requirements of different communication chips. This intermediary process (the determination of antenna configuration) reconciles the conflicting requirements and assigns antennas in a way that maintains performance optimization while preventing harmful electromagnetic interference.
Data Source
AI summary
A device and method selects an antenna configuration. The method performed at a user equipment includes determining at least one communication functionality that is being used, each communication functionality configured to utilize at least one antenna in a multi-antenna arrangement of the user equipment. The method includes receiving a first indication of whether a cellular communication functionality is being used, the cellular communication functionality configured to utilize at least one antenna in the multi-antenna arrangement. The method includes receiving a second indication of whether a coexistence condition is present. The method includes determining an antenna configuration for the multi-antenna arrangement to be used by the determined communication functionality based upon the determined communication functionality, the first indication, and the second indication. The method includes configuring the multi-antenna arrangement for the determined communication functionality based upon the antenna configuration.