Antenna Switched Diversity for Inter-RAT Handover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication systems face issues with service interruptions due to undesirable radio conditions, such as 'death grip' caused by obstacles, when switching between different radio access technologies (RATs) and antenna configurations, leading to dropped calls or service disruptions during handovers.
Innovation Solution
Implementing antenna-switched diversity (ASDIV) configurations that allow devices to switch between antennas based on sensed parameters, and determining if a target RAT can use the same ASDIV switch group as the serving RAT to maintain consistent antenna configurations during inter-RAT communications, thereby preventing service interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If ASDIV configuration is modified when UE communicates with different eNBs using different RATs, then communication with target RAT is enabled, but service interruptions occur due to using antennas with undesirable radio conditions
Solution Approach 1:
The system performs preliminary actions by determining whether the target RAT supports operating using the same ASDIV switch group as the serving RAT before actual handover occurs. This advance checking prevents service interruptions by ensuring the antenna configuration will be compatible with the target RAT, thereby resolving the contradiction between adaptability and reliability.
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring and determining RAT compatibility with respect to ASDIV switch group support. This feedback loop allows the system to adjust its handover decisions based on whether the target RAT can maintain the current antenna configuration, thus preventing service interruptions while maintaining versatility across different RATs.
2Reliability
If same ASDIV switch group is used across different RATs, then service continuity is maintained, but RAT-specific optimization is limited
Solution Approach 1:
The system applies dynamics by making the ASDIV configuration flexible and adaptive rather than fixed. It dynamically determines whether the target RAT supports the same ASDIV switch group and adjusts the configuration accordingly - maintaining the same switch group when supported for service continuity, or allowing reconfiguration when needed for RAT-specific optimization, thus resolving the contradiction between reliability and adaptability.
3Adaptability or versatility
If multiple ASDIV configurations are maintained for different RATs, then RAT-specific performance is optimized, but device complexity increases
Solution Approach 1:
The system implements universality by creating a common ASDIV switch group that can serve multiple RATs. Instead of maintaining separate dedicated configurations for each RAT, the same switch group is designed to be compatible with multiple RATs, reducing device complexity while maintaining RAT-specific performance through a unified, multi-functional configuration approach.
Data Source
AI summary
Aspects described herein relate to using antenna-switched diversity (ASDIV) in wireless communications. A serving node can be communicated with using a serving radio access technology (RAT) and based on an ASDIV configuration, wherein the ASDIV configuration defines an antenna switching configuration including a state of one or more switches in an ASDIV switch group for switching between one or more antennas for the communicating based on sensing one or more parameters of the communicating. It can be determined whether a target RAT supports operating using a same ASDIV switch group as the serving RAT. A target node can be communicated with using the target RAT and based on the ASDIV configuration where the target RAT operates using the same ASDIV switch group as the serving RAT.