UE Antenna Switching Capability Reporting for More Than 4 Rx Antennas
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Solution Overview
Problem
Existing communication systems lack a suitable method for terminals with more than 4 receiving antennas to report their antenna switching capabilities, which is necessary for obtaining channel information and achieving beamforming or spatial multiplexing gains.
Innovation Solution
A method and system for terminals to indicate their antenna switching capabilities, including sending a UE capability that supports more than 4 receiving antennas, using RRC signaling to report these capabilities, allowing flexible and efficient communication with network devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal uses more than 4 receiving antennas to improve downlink receiving capability, then the receiving capability is improved, but the method to report antenna switching capability becomes insufficient
Solution Approach 1:
The antenna switching capability reporting is segmented into two parts: first UE capability information reports antenna switching capabilities with 4 or fewer receiving antennas, while second UE capability information reports antenna switching capabilities with more than 4 receiving antennas. This segmentation allows the system to handle different antenna configurations through dedicated reporting mechanisms.
Solution Approach 2:
The patent introduces a new dimension for capability reporting by adding a second UE capability information report specifically for antennas > 4. This extends the original reporting framework (which only handled <= 4 antennas) into a new dimension, allowing comprehensive reporting without overloading the original structure.
2Loss of information
If the terminal reports all antenna switching capabilities, then the capability information is complete, but the signaling overhead increases
Solution Approach 1:
The capability reporting is divided into two separate UE capability information messages: one for antennas <= 4 and another for antennas > 4. This segmentation allows the network to selectively request only the relevant capability set, reducing the total signaling overhead while maintaining complete information when needed.
Solution Approach 2:
The terminal reports antenna switching capabilities in a partial manner initially (first UE capability for <= 4 antennas), and only provides additional information (second UE capability for > 4 antennas) when the network specifically requests it. This avoids transmitting unnecessary information and reduces signaling overhead.
3Adaptability or versatility
If the terminal supports multiple antenna switching capabilities, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The terminal device is designed with universal antenna switching capability that can handle both <= 4 and > 4 antenna configurations. The same hardware infrastructure supports multiple capability levels, and the dual UE capability reporting mechanism allows the device to present appropriate capabilities based on network requirements, reducing the need for separate hardware configurations.
Data Source
AI summary
The present application relates to a method for indicating an antenna switching capability, a terminal device and a communication device, where the method includes: sending, by a first terminal device, a first UE capability, where the first UE capability indicates at least one antenna switching capability supported by the first terminal device; at least part of the at least one antenna switching capability supports that the first terminal device has more than 4 receiving antennas. Embodiments of the present application can achieve indication of an antenna switching capability for a terminal device with more (such as more than 4) receiving antennas.