Wireless Network Transaction Scheduling via Time Division Blocks
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Solution Overview
Problem
Existing wireless data communication networks, such as those using the ALOHA protocol, are inefficient due to unmanaged channel collisions, leading to suboptimal throughput and power consumption, especially in wireless sensor networks where nodes frequently join and leave.
Innovation Solution
A system with a master node that schedules precise transmission time intervals for each node using time division blocks, configuration windows, and transaction windows to manage data exchanges, minimizing collisions and optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If ALOHA protocol is used for wireless data communication, then implementation is simple and basic instructions are easy to follow, but channel collision occurs frequently and transmission efficiency drops to approximately 20% capacity utilization
Solution Approach 1:
The communication channel is segmented into distinct time slots assigned to different nodes. Each node transmits only during its assigned time slot, preventing simultaneous transmissions and eliminating collisions. This segmentation of the time domain allows the system to maintain simple operation while dramatically improving transmission efficiency to near 100% capacity utilization.
2Adaptability or versatility
If unmanaged transmission is allowed in wireless networks, then nodes can transmit at any time without coordination, but signal collision and information loss occur
Solution Approach 1:
Time slots are pre-assigned to nodes before transmission occurs. Each node knows in advance when it is permitted to transmit, eliminating the need for real-time collision detection or arbitration. This preliminary assignment of transmission rights maintains flexibility for nodes to transmit whenever needed while ensuring data fidelity by preventing collisions through advance coordination.
3Productivity
If more channel capacity is utilized to improve throughput, then transmission efficiency increases, but power consumption and signal interference increase
Solution Approach 1:
Nodes transmit data periodically during their assigned time slots rather than continuously attempting transmission. This periodic action allows nodes to remain in low-power states between transmissions, significantly reducing overall power consumption. Meanwhile, the system achieves high throughput by ensuring that every time slot is utilized for valid transmissions, eliminating the waste of channel capacity associated with collision-based protocols.
Data Source
AI summary
System and method for scheduling and coordinating transmission signals in a wireless data communications network, comprising a master node and at least one tag node. In some embodiments, the network may also include a slave node. The master node divides time into repeating time division blocks comprising a configuration window and at least one transaction window. During the configuration window, the master node provides operating parameters to the tag or slave nodes, including a time slot within the transaction window that is reserved for the tag or slave nodes to broadcast data to the master node. The transaction window is subdivided into multiple reserved time slots, and each slot is assigned to a specific tag or slave node. When a reserved time slot arrives, the tag or slave node will broadcast data signals to the master node. The master periodically adjusts the transmission schedule for each tag or slave node, as needed, to ensure that every tag or slave node continues to broadcast only during its reserved time slot, thereby reducing communication data collisions and optimizing the overall performance and throughput of the data communications network.