Physical Layer Header Decoding for Wireless Energy Savings
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Solution Overview
Problem
Current wireless communication systems face significant energy consumption issues due to the need to continuously receive and decode data frames, even when frames are not intended for the receiving entity, as the decision to sleep is controlled at the MAC layer, leading to inefficient energy saving mechanisms.
Innovation Solution
The method allows the physical layer to independently decide when to sleep by decoding representative information from the data frame header, enabling the entity to calculate and implement an optimized sleep duration based on transmission rate and data volume, and cutting off electrical power supply to radio frequency components, thereby saving energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entity continuously receives and decodes data frames at the MAC layer to determine whether frames are intended for it, then communication reliability is maintained, but energy consumption increases significantly
Solution Approach 1:
The patent segments the data frame processing into two stages: physical layer filtering (extracting and checking destination address from header) and MAC layer processing (full frame decoding). This segmentation allows early termination of processing for non-intended frames at the physical layer, reducing energy consumption while maintaining communication reliability through proper frame filtering before MAC layer involvement.
Solution Approach 2:
The patent applies preliminary action by extracting and verifying the destination address from the data frame header at the physical layer before the entity commits to full frame reception and MAC layer processing. This preliminary check enables the entity to determine frame intent early and avoid unnecessary energy-consuming operations on non-intended frames.
2Use of energy by moving object
If the entity puts components to sleep to save energy, then energy consumption decreases, but the ability to receive intended frames promptly deteriorates
Solution Approach 1:
The patent implements self-service by enabling the physical layer to autonomously filter incoming frames based on destination address matching without requiring continuous MAC layer supervision. The entity maintains a list of intended destination addresses and automatically filters frames at the physical layer, allowing sleep mode operation while ensuring prompt reception of intended frames through this self-service filtering mechanism.
3Loss of energy
If the physical layer independently controls sleep decisions by decoding header information, then energy saving efficiency improves, but device complexity increases
Solution Approach 1:
The patent applies universality by designing the physical layer to perform multiple functions: traditional signal processing, header decoding, destination address extraction, and frame filtering. This multi-functional physical layer enables independent sleep control decisions without requiring separate dedicated filtering hardware, achieving energy saving efficiency while limiting complexity increase through functional integration.
Data Source
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AI summary
The invention relates to a method for putting at least one component of an entity in a wireless communication network comprising a plurality of entities, said communication network being organized into a plurality of communication layers including a physical layer. According to the invention, such a method comprises, at the level of said physical layer: - a step of receiving a header of a data frame extracted from a physical signal being received; - a step of decoding said header delivering at least one piece of information representative of at least one recipient entity of said frame; - a step of putting at least one component of said receiving entity of said header to sleep when the information representative of said recipient entity designates an entity other than said receiving entity.