Ambient Power Transmission Scheduling for Collision-Free Uplinks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless networks with ambient power devices experience increased collisions and inefficiencies as the density of devices increases, leading to data loss and reduced network throughput due to uncoordinated autonomous transmissions.
Innovation Solution
A system and method for scheduling transmissions from ambient power devices using a transmission scheduling logic that determines device characteristics, identifies overlapping devices, and manages charging intervals and durations to minimize collisions and optimize radio resource use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If ambient power devices transmit data autonomously as soon as capacitors or batteries reach sufficient charge level, then devices can operate independently without external coordination, but collisions occur when multiple devices transmit simultaneously on the same RF channel leading to data loss and reduced network throughput
Solution Approach 1:
A coordination device (wireless device or network controller) is introduced as an intermediary to manage transmissions from ambient power devices. The coordination device receives transmission requests, determines collision-free time slots, and schedules transmissions to avoid collisions while maintaining device autonomy. This mediator resolves the conflict between autonomous operation and collision avoidance by centralizing scheduling decisions.
2Device complexity
If ambient power devices transmit data autonomously without external coordination, then device complexity is reduced, but network throughput decreases due to collisions and retransmissions
Solution Approach 1:
The coordination device acts as a mediator that handles the complex scheduling logic, keeping individual ambient power devices simple. The mediator receives transmission requests, determines collision-free time slots considering device characteristics (energy storage capacity, charging time, required charge level), and schedules transmissions to maximize network throughput while maintaining low device complexity.
Solution Approach 2:
The system dynamically adjusts transmission parameters (time slots, charging intervals) based on device characteristics such as energy storage capacity, charging time, and required charge levels. By changing these parameters adaptively, the system optimizes network throughput for devices with different capabilities while maintaining simple autonomous operation at the device level.
3Reliability
If ambient power devices re-accumulate charge after collision and retransmit data, then data transmission is eventually achieved, but transmission delays increase affecting network efficiency
Solution Approach 1:
The coordination device performs preliminary scheduling by determining collision-free time slots before transmissions occur. It proactively assigns transmission opportunities based on device characteristics and current network conditions, so devices transmit at predetermined optimal times rather than waiting for collisions and re-accumulating charge. This preliminary action eliminates delays caused by collision-based retransmission protocols.
Solution Approach 2:
The system implements feedback mechanisms where the coordination device monitors transmission success, device charge levels, and network conditions. Based on this feedback, it dynamically adjusts scheduling decisions, charging intervals, and time slot assignments to prevent future collisions and optimize transmission timing, reducing the need for retransmissions and associated delays.
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 solution effectively reduces collisions and ensures uninterrupted connectivity by maintaining sufficient charge in ambient power devices, optimizing radio resource use and enhancing network throughput.
Implementation Method 1
The ambient power devices can be active devices that can include capacitors or batteries to store the energy
Data Source
AI summary
Devices, networks, systems, methods, and processes for scheduling transmissions from a plurality of ambient power devices are described herein. An Access Point (AP) may determine whether one or more ambient power devices are overlapping or non-overlapping based on one or more device characteristics associated with the one or more ambient power devices. The AP may transmit, to a wireless device, a charging instruction signal based on the one or more device characteristics. The one or more ambient power devices may receive one or more charging frames from the wireless device. The wireless device can receive one or more uplink frames and relay the one or more uplink frames to the AP. The AP may record the one or more charging frames, generate one or more charging profiles for the one or more ambient power devices, and develop an energy management strategy based on the one or more charging profiles.