Dynamic MIMO Layer Adjustment for Wireless Terminal Power Reduction
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Solution Overview
Problem
In existing MIMO technologies, terminal devices are required to use a fixed number of antennas based on the maximum MIMO layer quantity configured for each bandwidth part (BWP), leading to increased power consumption even during periods of low data traffic.
Innovation Solution
A wireless communication method where a terminal device receives indication information from a network device to dynamically adjust the number of antennas used based on the actual required MIMO layer quantity, reducing power consumption while maintaining transmission quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device uses a fixed number of antennas based on the maximum MIMO layer quantity configured for each BWP, then the transmission quality is ensured, but the power consumption increases during periods of low data traffic
Solution Approach 1:
The patent applies dynamics by enabling the terminal device to dynamically switch between different antenna quantities based on actual communication needs. The device can switch between a first antenna quantity (for control channels) and a second antenna quantity (for data channels), allowing adaptive adjustment rather than fixed configuration. This resolves the contradiction by making the antenna system dynamic rather than static.
Solution Approach 2:
The patent segments the antenna usage into different functional groups: control channel antennas and data channel antennas. The terminal device can independently configure and switch these antenna groups based on whether control channel or data channel transmission is occurring. This segmentation allows the device to use fewer antennas for control channels while reserving the full antenna array for data channels when needed.
2Use of energy by moving object
If the BWP is not switched to reduce power consumption, then the power consumption decreases, but the terminal device cannot adapt to varying data traffic volumes
Solution Approach 1:
The patent introduces dynamic adaptability within a fixed BWP configuration. Instead of requiring BWP switching to adapt to traffic conditions, the terminal device dynamically adjusts the maximum MIMO layer quantity based on whether control channel or data channel scheduling occurs. This provides adaptability to varying data traffic volumes without the overhead of BWP switching.
Solution Approach 2:
The patent changes the parameter of maximum MIMO layer quantity dynamically within the same BWP. The device can switch between a first maximum MIMO layer quantity (for control channels) and a second maximum MIMO layer quantity (for data channels), allowing parameter adaptation without BWP reconfiguration. This resolves the contradiction by enabling parameter flexibility without requiring BWP switching.
3Reliability
If the terminal device prepares to receive or send data of the maximum MIMO layer quantity, then the transmission reliability is ensured, but the power consumption increases when scheduling is not performed
Solution Approach 1:
The patent applies partial action by using only the necessary number of antennas for the current transmission type. For control channels, the device uses a first antenna quantity sufficient for control signal transmission. For data channels, it switches to a second antenna quantity for high-rate data transmission. This avoids the excessive action of maintaining full antenna readiness for all transmission types at all times.
Solution Approach 2:
The patent makes the antenna configuration dynamic by switching between different antenna quantities based on the scheduling type. The device maintains transmission reliability by having pre-configured antenna sets for both control and data channels, but only activates the appropriate set when needed. This dynamic switching ensures reliability when required while reducing power consumption during idle or low-activity periods.
Data Source
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AI summary
This application provides a wireless communication method and an apparatus. The method includes: A terminal device receives first indication information from a network device, where the first indication information is used to indicate a first maximum multiple-input multiple-output MIMO layer quantity N used by the terminal device when the terminal device performs wireless communication, and N is an integer greater than or equal to 1; and the terminal device performs wireless communication with the network device based on the first maximum MIMO layer quantity N, so that the maximum MIMO layer quantity that needs to be used by the terminal device can be switched as required. Therefore, the terminal device can adjust, based on an implementation, a quantity of antennas actually used for communication, thereby reducing power consumption of the terminal device while ensuring transmission quality.