Multi-Peak Reflection Beam Spatial Multiplexing for Obstructed Wireless Links
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Solution Overview
Problem
Existing wireless communication systems struggle to efficiently multiplex signals in scenarios where direct line-of-sight (LOS) links are obstructed, leading to reduced throughput and increased latency.
Innovation Solution
A reflecting device, such as a reconfigurable intelligent surface (RIS), generates a multi-peak reflection beam to spatially multiplex multiple signals simultaneously, allowing communication between multiple transmitters and receivers even when the LOS path is obstructed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sequential signal transmission is used to avoid interference, then signal reliability is improved, but throughput decreases and latency increases
Solution Approach 1:
The patent segments the reflected signal into multiple spatially separated peaks, where each peak corresponds to a different transmitted signal. The reflecting device creates distinct reflection beams with different directions of arrival, allowing simultaneous reception of multiple signals without interference, thus achieving both reliability and high throughput
Solution Approach 2:
The patent transitions from temporal multiplexing (sequential transmission) to spatial multiplexing by utilizing the spatial domain. Multiple signals are transmitted simultaneously but arrive at different spatial locations (different angles of arrival), which are then separated by the reflecting device to create distinct peaks, enabling concurrent transmission without interference
2Speed
If direct line-of-sight transmission is used, then transmission speed is improved, but adaptability to obstructed environments deteriorates
Solution Approach 1:
The patent introduces a reflecting device as an intermediary between the transmitter and receiver when direct line-of-sight is blocked. This intermediary reflects and shapes the signal to create multiple spatial peaks that can be simultaneously received, maintaining high transmission speed even in obstructed environments by providing an alternative propagation path
Solution Approach 2:
The reflecting device dynamically adjusts the reflection characteristics to create multi-peak beams adaptively. By controlling the phase and amplitude of reflected signals, the device can adapt to different obstruction scenarios and environmental conditions, maintaining reliable high-speed transmission across varying conditions
3Productivity
If spatial multiplexing is implemented, then throughput is improved, but device complexity increases
Solution Approach 1:
The patent implements self-service by having the reflecting device autonomously create and manage the multi-peak reflection beams without requiring complex coordination with transmitters or receivers. The reflecting device independently controls the phase and amplitude of each element to generate the desired spatial multiplexing pattern, reducing overall system complexity while achieving high throughput
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The use of a multi-peak reflection beam enables simultaneous transmission from multiple transmitters to multiple receivers, enhancing throughput and reducing latency by allowing concurrent data transmission without the need for sequential signal transmission.
Implementation Method 1
reflecting device, such as a reconfigurable intelligent surface (RIS), generates a multi-peak reflection beam to spatially multiplex multiple signals simultaneously
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a reflecting device may generate a multi-peak reflection beam that spatially multiplexes a first reflected signal of a first signal and a second reflected signal of a second signal. The reflecting device may receive the first signal and the second signal. The reflecting device may reflect the first signal and the second signal to output a spatially multiplexed reflected signal using the multi-peak reflection beam. Numerous other aspects are described.