Dynamic Antenna Configuration for SRS-Induced Puncturing Mitigation
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Solution Overview
Problem
Radio frequency communication systems face challenges with antenna puncturing due to sounding reference signaling, which disrupts downlink throughput in secondary frequency bands during carrier aggregation or dual connectivity operations.
Innovation Solution
A mobile device is equipped with a front-end system and radio that detect antenna puncturing scenarios caused by sounding reference signaling. The device then indicates to a base station a secondary radio configuration where a subset of antennas is used at a given time to avoid puncturing, thereby maintaining communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If all antennas are used for receiving data layers in the second frequency band, then the MIMO order and data reception capability are maximized, but antenna puncturing occurs due to sounding reference signaling in the first frequency band
Solution Approach 1:
The patent implements dynamic antenna configuration where the radio selectively determines which antennas to use for receiving data layers based on whether sounding reference signaling is detected in the first frequency band. The system transitions between using all antennas (4x4 MIMO) and a subset of antennas (4x2 or 4x3 MIMO) depending on real-time signaling conditions, thereby avoiding antenna puncturing while maintaining optimal data reception capability.
2Reliability
If a subset of antennas is used to avoid antenna puncturing, then communication continuity is maintained, but the MIMO order and data reception capability are reduced
Solution Approach 1:
The system dynamically adjusts the MIMO order between 4x4 (when no SRS is detected) and 4x2/4x3 (when SRS is detected), allowing the radio to optimize between full antenna utilization for maximum data rate and subset antenna utilization for puncturing avoidance, depending on real-time signaling conditions.
Solution Approach 2:
The patent changes the operational parameters of the antenna system by selectively enabling or disabling specific antenna connections based on the detection of sounding reference signaling. This parameter change allows the system to switch between different MIMO configurations (4x4, 4x3, 4x2) to balance communication continuity and data reception capability.
3Productivity
If the radio configuration is changed to avoid antenna puncturing, then downlink throughput is enhanced, but the system complexity increases due to dynamic antenna selection
Solution Approach 1:
The radio implements a feedback mechanism by detecting the presence of sounding reference signaling in the first frequency band and using this information to determine the appropriate antenna configuration for receiving data layers in the second frequency band. This feedback-driven approach enables automatic adaptation to signaling conditions, enhancing downlink throughput while managing system complexity through intelligent control.
Data Source
AI summary
Apparatus and methods for mitigating antenna puncturing arising from sounding reference signaling (SRS) are disclosed. In certain embodiments, a mobile device includes a front-end system operable to transmit over a first frequency band and to a receive over a second frequency band. The mobile device includes a radio operable to detect an antenna puncturing scenario arising from SRS signaling for the first frequency band for a first radio configuration in which each antenna of a group of antennas are used for receiving a data layer of the second frequency band. In response to detecting the antenna puncturing scenario, the radio indicates to a base station a second radio configuration in which a subset of the group of antennas are used at a given time for receiving the second frequency band to avoid the antenna puncturing scenario.