Multi-Antenna Transmit Diversity Signaling for Flexible Network Control
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Solution Overview
Problem
Existing wireless communication systems lack efficient methods for indicating multi-antenna transmit diversity capabilities and states, leading to inflexible network-side device control and suboptimal performance requirements and test cases.
Innovation Solution
A method and apparatus for a terminal and network side device to exchange transmit diversity capability and state information, including maximum and actual quantities of physical antennas, enabling flexible performance requirement and test case application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multi-antenna transmit diversity is implemented without capability indication, then device complexity is reduced, but adaptability and network control flexibility deteriorate
Solution Approach 1:
The terminal performs preliminary action by indicating its transmit diversity capability (maximum quantity of physical antennas) and current state (actual quantity of physical antennas) to the network side device before actual transmission occurs. This allows the network to pre-plan resource allocation and transmission parameters based on known terminal capabilities, achieving flexible adaptation without increasing terminal complexity during operation.
Solution Approach 2:
The terminal provides feedback information about its transmit diversity capability and state to the network side device. This feedback mechanism enables the network to adapt its control strategies according to the terminal's actual antenna configuration and operational state, resolving the contradiction between simple terminal design and flexible network control.
2Measurement precision
If maximum and actual antenna quantities are indicated, then network control precision is improved, but information processing overhead increases
Solution Approach 1:
The capability indication is segmented into two distinct parts: transmit diversity capability information (maximum quantity of physical antennas) and transmit diversity state information (actual quantity of physical antennas). This segmentation allows the network to process different types of information separately, improving precision for different purposes while managing signaling overhead efficiently through targeted information transmission.
Data Source
AI summary
This application relates to the field of communication technologies, and discloses a multi-antenna transmit diversity indication method, a terminal, and a network side device. The multi-antenna transmit diversity indication method in embodiments of this application includes: A terminal sends first information to a network side device, where the first information includes at least one of the following: transmit diversity capability information of the terminal and transmit diversity state information of the terminal. The transmit diversity capability information is used for indicating a maximum quantity of physical antennas supported by the terminal for transmit diversity. The transmit diversity state information is used for indicating an actual multi-antenna transmit diversity state of the terminal and/or an actual quantity of physical antennas for multi-antenna transmit diversity.