Multidrop Network Sleep Wakeup Control via Acknowledgement Messages
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Solution Overview
Problem
Conventional multidrop network systems lack reliable one-to-many sleep and wakeup functions, limiting their overall performance as these procedures can only be performed in a point-to-point manner.
Innovation Solution
The implementation of methods that allow nodes in a multidrop network system to send sleep and wakeup request messages, determine states based on acknowledgement messages, and manage node lists to enable one-to-many sleep and wakeup procedures, thereby enhancing system performance and supporting partial networking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If point-to-point sleep and wakeup procedures are used in conventional multidrop network systems, then the system maintains simple implementation, but the overall performance and reliability of sleep and wakeup functions are limited
Solution Approach 1:
The patent segments the sleep and wakeup procedures into distinct message types (sleep request messages, sleep acknowledgement messages, wakeup request messages, wakeup acknowledgement messages) that can be selectively applied to individual nodes or groups of nodes. This segmentation allows the system to implement one-to-many procedures reliably while maintaining manageable complexity through standardized message formats and state transition rules.
Solution Approach 2:
The patent creates universal sleep and wakeup message formats that can function in multiple modes: point-to-point communication between any two nodes, one-to-many broadcast from one node to multiple nodes, and selective group operations. This multi-functionality resolves the contradiction by providing reliable sleep/wakeup control across different network configurations without requiring separate procedures for each mode.
2Productivity
If one-to-many sleep and wakeup procedures are implemented, then the overall performance of the multidrop network system is improved, but the complexity of message management and node coordination increases
Solution Approach 1:
The patent implements preliminary action through the node list request message and node list update message mechanisms. Before executing one-to-many sleep or wakeup operations, the initiating node obtains an updated node list containing current network topology information. This preliminary action ensures that subsequent broadcast messages are delivered to all active nodes, improving productivity while managing complexity through pre-coordinated message distribution.
Solution Approach 2:
The patent employs feedback mechanisms where nodes send acknowledgement messages (sleep acknowledgement, wakeup acknowledgement) back to the initiating node and other network nodes. This feedback allows the system to verify successful state transitions, coordinate partial wakeups, and maintain accurate node status information, thereby improving overall system performance while providing structured feedback loops to manage coordination complexity.
3Adaptability or versatility
If partial node wakeup function is performed, then the efficacy of partial networking is achieved, but the complexity of determining which nodes to wake up increases
Solution Approach 1:
The patent applies local quality by enabling different nodes to be in different operational states (sleep or wakeup) based on their specific needs and roles in the network. The wakeup request messages can be selectively addressed to specific nodes or groups of nodes identified by node indices, allowing partial networking where only necessary nodes are activated. This resolves the contradiction by providing adaptable partial wakeups while managing complexity through targeted, node-specific operations rather than blanket system-wide wakeups.
Data Source
AI summary
A method for a multidrop network system is provided. The method includes the following steps: transmitting, by a first node, a sleep request message to a second node; and determining, by the first node, whether to enter a sleep state from a wakeup state according to the condition in which the second node transmits a sleep acknowledge message in response to the sleep request message.