Wireless Slave Node Time Slot Identification
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Solution Overview
Problem
Conventional wireless communication networks face inefficiencies due to the need for slave nodes to actively request time slots, leading to continuous power consumption and data collisions, as they rely on unique ID codes for identification, which increases the load on the central processing unit.
Innovation Solution
Assigning unique periodic transmission time intervals to each slave node, allowing the central processing unit to identify them based on arrival times without additional ID information, thereby avoiding collisions and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If slave nodes actively request time slots from the central processing unit, then time slot allocation can be dynamically adjusted, but power consumption increases and the central processing unit experiences extensive load
Solution Approach 1:
The patent implements periodic time slots assigned to each slave node based on their transmission priorities and data types. Instead of continuous active requests, slave nodes transmit data only during their assigned periodic time slots, eliminating the need for continuous power consumption while maintaining dynamic adaptability through centralized time slot management by the access point.
Solution Approach 2:
The access point performs preliminary action by pre-allocating time slots to slave nodes based on their communication requirements, data types, and priorities before actual data transmission begins. This preliminary time slot assignment eliminates the need for slave nodes to actively request time slots during operation, reducing both power consumption and processing load while maintaining dynamic adaptability.
2Adaptability or versatility
If slave nodes actively request time slots, then time slot allocation can be adjusted, but data collisions occur at the central processing unit
Solution Approach 1:
The patent assigns periodic time slots to each slave node based on their transmission priorities and data types (e.g., control data, sensor data, audio data). This periodic structure ensures that slave nodes transmit only during their assigned slots, completely preventing data collisions at the access point while maintaining flexibility through centralized time slot management that can be dynamically adjusted.
Solution Approach 2:
The patent segments the transmission time into distinct, non-overlapping time slots allocated to different slave nodes. This segmentation of the communication medium into dedicated time intervals for each node eliminates data collisions by ensuring that only one slave node transmits at any given time, while the access point maintains flexibility by dynamically assigning and reassigning these segments based on network conditions.
3Speed
If slave nodes remain active to request time slots, then communication responsiveness is improved, but energy efficiency is reduced
Solution Approach 1:
The patent implements periodic time slot allocation where slave nodes can enter sleep mode between their assigned transmission slots, significantly improving energy efficiency. The access point maintains communication responsiveness by pre-allocating time slots based on priority levels, ensuring that high-priority nodes are ready to transmit immediately when their slot arrives, while low-priority nodes can remain dormant longer.
Solution Approach 2:
The access point performs preliminary action by pre-assigning time slots to slave nodes based on their communication requirements and priorities before the actual transmission begins. This allows slave nodes to remain in low-power states between their assigned slots while ensuring that when their slot arrives, they can immediately transmit without needing to actively request, thus maintaining responsiveness while improving energy efficiency.
4Measurement precision
If unique ID codes are used for slave node identification, then device identification is achieved, but the central processing unit experiences extensive load
Solution Approach 1:
The patent extracts the identification function from the data payload by using the transmission time slot itself as the identifier. Instead of including unique ID codes in each data transmission that require processing by the access point, the system uses the predetermined time slot assignment as the identification mechanism, eliminating the need for ID code processing and significantly reducing the access point's processing load while maintaining precise device identification.
Solution Approach 2:
The patent uses the time slot assignment structure as a copy or representation of the slave node's identity. Rather than processing actual ID codes from slave nodes, the access point identifies nodes based on whose time slot is currently active, creating a simplified identification system that reduces processing load while maintaining the ability to precisely identify and manage each slave node's communications.
Data Source
AI summary
A wireless network data communication system includes a plurality of slave nodes and a central processing unit. Each slave node is assigned thereto a transmission time interval and is configured to transmit data based on its assigned transmission time interval. The central processing unit is in signal communication with the slave nodes to receive transmitted data. The central processing unit is further configured to identify a given slave node from among the plurality of slave nodes based on a comparison between an arrival time at which transmitted data was received and the transmission time intervals assigned to each slave node.