Terminal Antenna Information Reporting for MIMO Resource Scheduling
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Solution Overview
Problem
In MIMO-based wireless communication systems, the increasing number of antennas on terminal devices complicates channel estimation and resource scheduling for base stations, leading to inefficiencies in data transmission and potential issues with power consumption and electromagnetic radiation.
Innovation Solution
The terminal device obtains and reports antenna information, including the maximum number of layers for uplink spatial multiplexing and antenna switch-on/off capabilities, to the base station, allowing adaptive antenna management and timely resource scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of antennas on terminal device is increased to meet MIMO requirements, then channel capacity and spectrum resource utilization are improved, but calculation complexity for channel estimation and resource scheduling increases
Solution Approach 1:
The terminal device performs channel estimation and reports antenna information (including channel quality indicators and antenna capability information) to the base station in advance before actual data transmission. This preliminary action allows the base station to pre-process and select appropriate transmission resources, reducing the real-time calculation complexity during data transmission while maintaining high channel capacity utilization
2Speed
If the number of antennas on terminal device is increased, then data transmission speed is improved, but power consumption and electromagnetic radiation increase
Solution Approach 1:
The terminal device dynamically adjusts the number of active antennas based on channel conditions, data transmission requirements, and power consumption constraints. The device can switch between different antenna configurations (e.g., using all antennas for high-speed transmission when channel conditions are good, or reducing active antennas when power saving is needed), thereby achieving adaptive optimization of both transmission speed and power consumption
Solution Approach 2:
The terminal device changes operational parameters such as the number of active antennas, transmit power per antenna, and modulation schemes based on channel quality feedback and power availability. By adjusting these parameters dynamically, the system can maintain high data transmission speeds when conditions permit while reducing power consumption and electromagnetic radiation when necessary
3Productivity
If the number of antennas on terminal device is increased, then channel capacity is improved, but complexity of channel estimation and resource scheduling at base station increases
Solution Approach 1:
The terminal device continuously monitors channel conditions and feeds back antenna information (including channel quality indicators, antenna capability information, and transmission parameter recommendations) to the base station. This feedback mechanism enables the base station to make informed resource scheduling decisions without performing complex real-time calculations for all possible antenna combinations, as the terminal has already processed and reported the most relevant information
Solution Approach 2:
The terminal device extracts and reports only the most critical antenna information (such as channel quality indicators and key capability parameters) to the base station, rather than transmitting complete channel state information for all antennas. This extraction approach reduces the information processing burden at the base station while still enabling effective resource scheduling for high-capacity MIMO transmissions
Data Source
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AI summary
The present invention discloses an antenna information sending method and device, and an antenna information receiving method and device. Content includes: obtaining first antenna information of a terminal device, where the first antenna information includes at least one or more of a maximum number of layers for uplink spatial multiplexing that are supported by the terminal device, an antenna number supported by the terminal device, or whether the terminal device supports smart switch on/off of UE's antenna ports; and sending the first antenna information to a base station. In this way, the terminal device can control, according to a service requirement of the terminal device, an antenna deployed on the terminal device, and report antenna information of the terminal device to the base station in a timely manner. On one hand, the terminal device adaptively adjusts a quantity of used antennas, which effectively mitigates a problem of large power consumption and strong electromagnetic radiation of the terminal device caused by an increase in an antenna number. On the other hand, the base station can obtain the antenna information of the terminal device in a timely manner, and properly schedule a channel resource for a communications service initiated by the terminal device, which improves a capability of communication between the terminal device and the base station.