Parent Node Packet Forwarding with Scheduled Activation
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Solution Overview
Problem
In tree topology network structures based on wireless personal area networks (WPAN) and mobile ad hoc networks, the frequent forwarding of packets by upper-layer nodes leads to significant power consumption due to the need for continuous activation, which affects the overall packet sending performance.
Innovation Solution
A packet sending method where a parent node receives instruction information to wait for a child node to send a packet before forwarding it, allowing for optimized packet aggregation and reduced power consumption by controlling when packets are sent based on preset conditions such as buffer space or child node activity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If parent nodes continuously activate to forward packets from child nodes, then packet forwarding reliability is improved, but power consumption increases significantly
Solution Approach 1:
The patent implements periodic wake-up mechanisms where parent nodes activate at scheduled intervals to forward packets. Instead of continuous activation, nodes use timing synchronization to wake up periodically, process packets, and return to sleep mode, thereby maintaining forwarding reliability while dramatically reducing power consumption.
Solution Approach 2:
The patent employs preliminary packet buffering at child nodes before parent node activation. Child nodes store packets in buffers during the parent node's sleep period, and the parent node processes multiple buffered packets during its brief activation window, eliminating the need for continuous parent node monitoring and reducing overall power consumption.
2Productivity
If parent nodes frequently activate to forward packets, then packet sending speed is improved, but power consumption increases
Solution Approach 1:
The patent merges multiple packet forwarding operations into single activation events. By accumulating packets from multiple child nodes and forwarding them together during one parent node activation, the system maintains high packet sending speed while reducing the frequency of activations and overall power consumption.
Solution Approach 2:
The patent ensures continuous packet processing through buffered storage at child nodes. Even when parent nodes are in sleep mode, packets continue to be received and stored, ensuring that useful action (packet forwarding) resumes immediately upon parent node activation without interruption to the overall packet flow.
3Use of energy by moving object
If parent nodes wait for child nodes before sending packets, then power consumption is reduced, but packet sending delay increases
Solution Approach 1:
The patent implements dynamic waiting strategies where parent nodes adjust their activation timing based on buffer status and packet priority. Instead of fixed waiting periods, the system dynamically determines activation moments, allowing flexible balancing between power savings from waiting and delay constraints for time-sensitive packets.
Solution Approach 2:
The patent employs feedback mechanisms where child nodes signal packet availability and priority to parent nodes. Based on this feedback, parent nodes optimize their activation timing to minimize waiting time while still achieving power savings, dynamically adjusting the balance between delay and energy consumption based on real-time network conditions.
Data Source
AI summary
This application provides a packet sending method, applied to a communications system including at least two nodes, the at least two nodes include at least one parent node having a child node, a packet sent by the child node is forwarded by the parent node, and the method includes: receiving, by a first node, first instruction information, where the first instruction information is used to instruct the first node to send a packet after a first moment, and the first node is a parent node; and sending, by the first node, a first packet according to the first instruction information.