MIMO Antenna Transceiver Module for Faster Channel Estimation
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Solution Overview
Problem
In time division duplexing systems, the base station faces challenges in shortening channel quality estimation duration and ensuring downlink coverage capability while managing limited SRS resources and controlling base station costs.
Innovation Solution
The implementation of an antenna transceiver module with a transmit chain and multiple receive chains, where each branch chain includes a phase shifter, allows for reduced transmitter count, efficient SRS resource utilization, and simultaneous reception of SRSs across multiple antenna subarrays, thereby shortening channel quality estimation duration and enhancing downlink performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station uses traditional transmit chain configuration with one transmitter per antenna subarray, then the downlink coverage capability is ensured, but the base station cost increases and SRS resources are insufficient
Solution Approach 1:
The patent merges multiple transmit chains into a single transmitter by combining the transmit paths of multiple antenna subarrays. The single transmitter generates a transmit signal that is distributed to multiple antenna subarrays through phase shifters, reducing the number of transmitters while maintaining downlink coverage capability through coordinated signal transmission across all subarrays.
Solution Approach 2:
The single transmitter is designed to serve multiple antenna subarrays simultaneously, making it a multi-functional device. The transmitter can dynamically adjust phase and amplitude for each connected antenna subarray, enabling it to perform the functions of multiple dedicated transmitters while reducing overall system cost and complexity.
2Measurement precision
If the base station uses traditional receive chain configuration, then the channel quality estimation is accurate, but the channel quality estimation duration is long and response speed is slow
Solution Approach 1:
The patent divides the receive function into multiple independent receive chains, each dedicated to a specific antenna subarray. This segmentation allows simultaneous reception of SRS signals from multiple antenna subarrays, enabling parallel channel quality estimation processes that reduce total estimation duration while maintaining accuracy through dedicated processing for each subarray.
Solution Approach 2:
The multiple receive chains enable continuous and simultaneous reception of SRS signals across all antenna subarrays. Instead of sequential reception that would require time multiplexing, the system continuously receives and processes signals from all subarrays in parallel, eliminating idle time and reducing overall channel quality estimation duration.
3Reliability
If the base station increases the number of transmitters to improve downlink coverage, then the coverage capability is enhanced, but the base station cost increases
Solution Approach 1:
The patent combines multiple transmitter functions into a single transmitter unit that serves multiple antenna subarrays. By merging the transmit paths and sharing common components (power amplifier, frequency synthesizer, etc.), the system reduces the total number of transmitters while maintaining the coverage capability that would require multiple independent transmitters in a traditional configuration.
Solution Approach 2:
The patent transitions from a one-to-one mapping between transmitters and antenna subarrays to a many-to-one relationship where multiple subarrays share a single transmitter. This dimensional change in the system architecture allows the same coverage capability to be achieved with fewer transmitters by utilizing spatial multiplexing and phase control across the antenna array.
Data Source
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AI summary
Embodiments of this application relate to the field of communication device technologies, and provide an antenna transceiver module, a multiple-input multiple-output antenna transceiver system, and a base station, used for shortening channel quality estimation duration while ensuring a downlink coverage capability of the base station and controlling a base station cost. The antenna transceiver module includes a transmit chain and a plurality of receive chains; the transmit chain includes a main chain and a plurality of branch chains; input ends of the plurality of branch chains are connected to an output end of the main chain; an output end of each branch chain is configured to connect to a duplexer; at least one of the plurality of branch chains includes a phase shifter; a quantity of the plurality of receive chains is equal to a quantity of all output ends of the plurality of branch chains; input ends of the plurality of receive chains have one-to-one correspondence to all the output ends of the plurality of branch chains; and the input end of each receive chain of the plurality of receive chains is configured to connect to the duplexer connected to the output end of the branch chain corresponding to the input end of the receive chain. An electronic element provided in embodiments of this application is used as a power amplifier.