Intelligent Omni-Surface Switching for 360° Coverage and Lower Power
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Solution Overview
Problem
Existing intelligent reflecting surfaces only provide semi-communication coverage and cannot achieve 360° omnidirectional coverage, especially for users on the back side, and they do not optimize power consumption effectively.
Innovation Solution
A communication system design method using an intelligent omni-surface with reflection and transmission modes, time slot switching, and optimization of phase shift, transmit power, and time slot length to minimize total power consumption while ensuring minimum rate constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If traditional intelligent reflecting surface is used with single reflection mode, then device complexity is reduced, but communication coverage is limited to semi-coverage area and cannot achieve 360° omnidirectional coverage
Solution Approach 1:
The intelligent omni-surface is segmented into multiple independent elements, each capable of independently switching between reflection mode and transmission mode. This segmentation allows different regions of the surface to serve different communication purposes simultaneously, enabling 360° omnidirectional coverage while managing device complexity through modular architecture
Solution Approach 2:
Each element of the intelligent omni-surface is designed with multi-functionality, capable of operating in both reflection mode and transmission mode. This universal design allows the same hardware structure to provide both reflected and transmitted signal paths, achieving comprehensive coverage without requiring separate dedicated structures for each mode
2Area of stationary object
If intelligent omni-surface operates in both reflection and transmission modes with time slot switching, then communication coverage achieves 360° omnidirectional, but use of energy increases due to frequent mode switching
Solution Approach 1:
The intelligent omni-surface employs periodic time slot switching between reflection mode and transmission mode. By organizing operation into periodic cycles where each element alternates modes according to a predetermined schedule, the system achieves omnidirectional coverage while managing energy consumption through regular, predictable switching patterns that allow for optimization
Solution Approach 2:
The system dynamically adjusts the time slot allocation and mode switching based on real-time communication requirements. Elements can switch between reflection and transmission modes dynamically, with the optimization algorithm adjusting switching frequencies and durations to minimize total power consumption while maintaining 360° coverage
3Use of energy by stationary object
If optimization is performed without considering time slot length constraints, then power consumption minimization is simplified, but communication reliability deteriorates due to insufficient transmission time
Solution Approach 1:
The optimization framework incorporates feedback mechanisms that monitor communication reliability metrics and adjust time slot length allocations accordingly. The system uses minimum rate constraints as feedback signals to ensure that optimized time slot lengths maintain sufficient transmission time for reliable communication while achieving power consumption minimization
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
Achieves 360° omnidirectional communication coverage and reduces total power consumption by optimizing phase shift, transmit power, and time slot length, enabling communication for users on both sides of the intelligent omni-surface.
Implementation Method 1
in the reflection mode, each element is capable of reflecting an incident signal
Implementation Method 2
in the transmission mode, the incident signal is capable of being transmitted through the element of the intelligent omni-surface
Data Source
AI summary
It discloses a communication system design method based on an intelligent omni-surface, comprising step 1: constructing an optimization problem by minimizing a total power consumption of the communication system as an objective function, the communication system being a communication system based on an intelligent omni-surface; step 2: setting a constraint condition for the optimization problem constructed in the step 1, the constraint condition comprising a minimum rate constraint of a user, a phase shift constraint of the intelligent omni-surface and a length constraint of an allocated time slot; and step 3: solving the optimization problem after setting with the constraint condition to obtain solution for minimizing the total power consumption of the system. When lowest rate requirements of all users are met, the method reduces the total power consumption of the system and realizes omnidirectional coverage of a communication area, and has a good application value.