Adaptive Antenna Configuration for Channel State Information Reporting
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing channel state information reporting, leading to discrepancies between user equipment (UE) and base stations, which affects scheduling and resource allocation, resulting in suboptimal power consumption, spectral efficiency, and latency.
Innovation Solution
The implementation of adaptive receive antennas in communication devices that allow for on-demand channel state information measurement and reporting, enabling UE to dynamically adjust antenna configurations based on power modes and feedback indications to align with base station expectations, thereby reducing reporting discrepancies and improving resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE uses all receive antennas to measure channel state information, then the measurement precision is improved, but the power consumption increases
Solution Approach 1:
The patent applies partial action by enabling the UE to selectively activate only a subset of receive antennas for channel state information measurement based on operational needs. When full measurement precision is not required, only necessary antennas are activated, reducing power consumption while maintaining adequate measurement accuracy for current traffic conditions.
Solution Approach 2:
The patent implements dynamic antenna activation where the set of active receive antennas is adjusted in real-time based on traffic conditions, power mode, and channel state requirements. The UE can dynamically switch between using all antennas for high-precision measurements and using fewer antennas for power-saving operation, with the configuration adapted according to current system needs.
2Adaptability or versatility
If the UE dynamically adjusts antenna configurations based on power modes, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The patent employs feedback mechanisms where the UE reports its antenna configuration capabilities and current configuration state to the network. The network provides feedback on preferred configurations based on channel conditions and quality requirements. This bidirectional feedback enables adaptive antenna configuration management while distributing the complexity between UE and network, avoiding excessive complexity in a single component.
Solution Approach 2:
The patent utilizes parameter changes by allowing the UE to switch between predefined antenna configuration modes (e.g., full antenna set, reduced subset, power-saving mode) based on power mode indicators and channel conditions. Rather than managing continuous complex configurations, the system uses discrete parameter changes between standardized configuration states, reducing management complexity while maintaining adaptability.
3Reliability
If the UE reports channel state information based on actual antenna configuration, then the reliability is improved, but the loss of information increases due to potential discrepancies with base station expectations
Solution Approach 1:
The patent applies preliminary action by having the UE indicate its antenna configuration capabilities and current configuration state to the network before performing channel state information measurements and reporting. The network is pre-informed of which antennas are active, allowing it to correctly interpret the channel measurements based on the actual antenna configuration used, thereby preventing information loss due to mismatches.
Solution Approach 2:
The patent uses feedback mechanisms where the UE includes information about its antenna configuration in its reports to the network. The network receives feedback on both the channel state measurements and the configuration used to obtain them, enabling the network to correctly process and utilize the information. This feedback loop ensures both UE and network have consistent understanding of the measurement context.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A communication device, which may be otherwise known as a user equipment (UE), may determine a capability relating to an antenna configuration associated with channel state information reporting. The UE may transmit a message including an indication of the capability, and receive a channel state information reference signal using the antenna configuration. The UE may transmit, based on the channel state information reference signal, a channel state information report in accordance with the antenna configuration associated with the channel state information reporting.