Dynamic Time Slot Reassignment for Wireless Networks
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Solution Overview
Problem
Current communication networks face inefficiencies in dynamically re-assigning wireless time slot-frequency pairings, leading to energy wastage and potential collisions due to static scheduling and lack of adaptive resource allocation in deterministic and best-effort environments.
Innovation Solution
Implementing a method for dynamic allocation and re-allocation of time slot-frequency pairings using a three-way exchange mechanism (data frame, ACK, ACK-ACK) to reduce idle listening and collisions, with nodes dynamically selecting and reassigning transmission units based on actual traffic needs and usage patterns, and utilizing prime numbers for identification and reallocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If static scheduling is used for time slot-frequency pairings, then network simplicity is maintained, but energy efficiency deteriorates due to unnecessary receiver activation and idle listening
Solution Approach 1:
The patent implements dynamic time slot reassignment where transmission units can be reallocated based on actual traffic conditions. Nodes can request additional time slots or release unused ones, and the network dynamically updates scheduling decisions through control messages, transforming the static schedule into an adaptive system that responds to changing traffic patterns
Solution Approach 2:
The patent employs feedback mechanisms where nodes monitor their traffic conditions and send control messages to request time slot adjustments. The network controller receives this feedback and responds with reassignment decisions, creating a closed-loop system that continuously optimizes resource allocation based on actual network conditions
2Use of energy by moving object
If dynamic re-assignment of time slot-frequency pairings is implemented, then energy efficiency improves by reducing idle listening, but collision risk increases due to potential scheduling conflicts
Solution Approach 1:
The patent introduces a network controller as an intermediary that coordinates all time slot reassignment operations. This central controller receives requests from nodes, processes them against the current schedule, and issues coordinated reassignment decisions that prevent conflicts, acting as a mediator that enables dynamic allocation while maintaining collision-free operation
Solution Approach 2:
The patent implements preliminary validation of reassignment requests before actual time slot changes take effect. The network controller checks requested time slots against the current schedule and potential future conflicts before approving reassignments, preventing collisions before they can occur by ensuring temporal and spectral separation of transmissions
3Productivity
If predetermined time slots are assigned to each node, then network stability is maintained, but bandwidth utilization deteriorates due to unused transmission units
Solution Approach 1:
The patent enables nodes to release (discard) time slot allocations when traffic conditions change and those resources are no longer needed. The network controller then recovers these released time slots and reassigns them to other nodes with pending traffic, creating a循环利用 mechanism that improves overall bandwidth utilization while maintaining schedule stability through controlled reallocation
Solution Approach 2:
The patent creates a universal time slot pool that can be dynamically allocated to serve multiple different traffic flows and nodes based on demand. Instead of dedicating time slots to specific node pairs, the system allows the same time slot resources to serve different communication needs at different times, maximizing the versatility and utilization of the available bandwidth
Data Source
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AI summary
One embodiment includes signaling, by a first network node to a transmission unit owner node, identifying one or more remaining wireless time slot-frequency pairings of a current transmission unit assigned to the first network node that will not be used by the first network node during the current transmission unit. The transmission unit owner node reassigns one or more of the remaining wireless time slot-frequency pairings to a second network node in the network to use during the current transmission unit. One embodiment includes communicating information between a first network node and a second network node using a particular time slot-frequency pairing, including a particular frame time from the second network node to the first network node, a particular acknowledgement time from the first network node to the second network node, and a particular acknowledgment of the acknowledgment time from the second to the first network node.