Virtual Antenna Mapping for LTE R8 Terminal Compatibility
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Solution Overview
Problem
The increasing number of antennas and physical channels in a network outpaces the antenna port support of some user equipment, leading to reduced flexibility in wireless communication.
Innovation Solution
Configuring multiple virtual antenna mapping matrices based on channel state information to select a target matrix that matches the terminal device's state, allowing communication with devices supporting fewer antenna ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a preset virtual antenna mapping matrix is configured to map four antenna ports to eight physical channels, then communication between terminal devices and base station is ensured, but flexibility of wireless communication is reduced
Solution Approach 1:
The patent implements dynamic selection of virtual antenna mapping matrices based on channel state information. Instead of using a fixed preset mapping matrix, the system dynamically chooses the most appropriate mapping matrix from multiple candidates according to real-time channel conditions, thereby improving wireless communication flexibility while maintaining communication reliability
Solution Approach 2:
The patent changes the parameter of antenna port mapping by introducing multiple different virtual antenna mapping matrices with different mapping relationships. The system selects and switches between different mapping matrices based on channel state, effectively changing the mapping parameters to adapt to different communication scenarios
2Productivity
If the quantity of antennas and physical channels is continuously increased, then network capacity is improved, but compatibility with user equipment supporting fewer antenna ports becomes problematic
Solution Approach 1:
The patent makes the network device compatible with both old and new terminal devices by supporting multiple virtual antenna mapping matrices. The network can simultaneously support terminals with 4 antenna ports and terminals with more antenna ports by selecting appropriate mapping matrices, achieving multi-functionality and universal compatibility across different equipment generations
Solution Approach 2:
The patent creates multiple virtual antenna mapping matrices that represent different mapping relationships between antenna ports and physical channels. These virtual mappings allow the network to present different channel configurations to different terminal types, effectively copying the network interface to match different terminal capabilities
Data Source
AI summary
Embodiments of this application disclose a wireless communication method, a related apparatus, and a device. Configuring at least two virtual antenna mapping matrices, where each of the at least two virtual antenna mapping matrices indicates a mapping relationship between four antenna ports and N physical channels, and N is an integer greater than 4; obtaining channel state information of a target terminal device in a target cell; and then determining, based on the channel state information, that the mapping relationship between the four antenna ports and the N physical channels is a mapping relationship indicated by a target virtual antenna mapping matrix in the at least two virtual antenna mapping matrices, and performing wireless communication with the target terminal device by using the target virtual antenna mapping matrix.