Multi-Beam Channel Measurement Using Repetitive Segments
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Solution Overview
Problem
Existing wireless communication systems, particularly in 5G and next-generation WLAN, face challenges in achieving accurate channel measurement and beamforming due to the lack of precise channel information feedback when using multi-antenna and multi-beam technologies, leading to suboptimal data transmission quality and network throughput.
Innovation Solution
A method is introduced where a wireless communication node transmits a channel measurement frame based on multiple beams, and the corresponding feedback frame is received from the device, allowing for accurate channel information feedback with respect to specific beams, thereby enhancing beamforming and network throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-antenna and multi-beam technologies are introduced to enhance spatial multiplexing and throughput, then network throughput and spatial multiplexing capability are improved, but channel measurement accuracy deteriorates due to lack of precise channel information feedback
Solution Approach 1:
The channel measurement frame is segmented into multiple repetitive segments, each transmitted through a different beam. This segmentation allows the receiving device to measure channel information for each beam separately, providing accurate per-beam channel state information while maintaining overall system throughput through spatial multiplexing.
Solution Approach 2:
The patent performs preliminary channel measurement by transmitting measurement frames through multiple beams before actual data transmission. This preliminary action provides accurate channel state information that guides subsequent beamforming and spatial multiplexing operations, ensuring optimal throughput while maintaining measurement accuracy.
2Device complexity
If existing channel measurement methods are used without beam information reference, then system complexity is reduced, but beamforming accuracy deteriorates leading to suboptimal data transmission quality
Solution Approach 1:
The patent implements a feedback mechanism where the receiving device measures channel information for each beam and feeds back this information to the transmitting device. This feedback enables accurate beamforming by providing per-beam channel state information, improving beamforming accuracy without significantly increasing system complexity through the use of standard feedback protocols.
Data Source
AI summary
Methods, apparatus and systems for performing channel measurement in a multi-beam wireless communication are disclosed. In one embodiment, a method performed by a wireless communication node is disclosed. The method comprises: transmitting a channel measurement frame based on a plurality of beams to a wireless communication device through a channel between the wireless communication node and the wireless communication device; and receiving a feedback frame from the wireless communication device. The channel measurement frame comprises a training sequence including a plurality of repetitive segments. Each of the plurality of repetitive segments is transmitted based on a respective one of the plurality of beams. The feedback frame comprises channel information of the channel with respect to at least one beam of the plurality of beams.