Communication Apparatus Address Filter Power Saving Collision
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Solution Overview
Problem
In adhoc networks without a specific base station, power-saving control functions lead to address collisions and data communication mismatches due to the lack of accurate terminal power-saving state recognition, causing unnecessary data reception and processing.
Innovation Solution
A communication apparatus with a setting unit to filter receive signals based on the communicating party's address during power-saving control and a resetting unit to remove filters and reassign network addresses when the power-saving control is terminated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a terminal activates power-saving mode and lowers reception power during standby, then power consumption is reduced, but data cannot be received normally and address collisions occur
Solution Approach 1:
The system performs preliminary actions by having the base station store the terminal's transmission address before the terminal enters power-saving mode. This pre-stored address information enables the base station to correctly forward data packets to the terminal even when the terminal's reception is temporarily suspended, thus maintaining data reception reliability while power consumption is reduced.
Solution Approach 2:
The base station acts as an intermediary that bridges the communication gap between data senders and terminals in power-saving mode. It receives data intended for sleeping terminals, stores it using the pre-saved transmission address, and forwards it when the terminal wakes up, thereby preventing address collisions and ensuring reliable data delivery without requiring the terminal to maintain continuous reception.
2Loss of energy
If power-saving mode is used in adhoc networks without base station recognition, then battery consumption is reduced, but address collisions and data mismatches occur
Solution Approach 1:
The system implements a feedback mechanism where the base station utilizes the transmission address information from the terminal to correctly route data packets. This feedback loop ensures that even when terminals operate in power-saving mode without active recognition, their address information is preserved and used by the base station to prevent address collisions and ensure accurate data delivery.
3Use of energy by moving object
If reception power is lowered during power-saving standby, then power consumption decreases, but ARP requests cannot be responded to and IP address conflicts occur
Solution Approach 1:
The base station performs preliminary action by storing the terminal's transmission address before the terminal enters power-saving mode. This pre-stored address enables the base station to maintain communication functionality by correctly routing ARP requests and other data packets to the terminal when it wakes up, eliminating the need for the terminal to maintain continuous reception power while preserving full communication capability.
Data Source
AI summary
In a communication apparatus for wirelessly communicating directly with a communication apparatus that is participating in a network, a filter is set so as to receive only a signal from a communicating party before start of a power-saving control function at the time of standby, the set filter is removed after the power-saving control function for standby is terminated, and a logical address on the network is reset. As a result, when the power-saving control function is utilized, collision of physical addresses is prevented and it is possible to perform data communication without mismatch.