Terminal Preamble Detection for Energy-Efficient Wireless Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Battery-operated terminal devices in wireless networks face challenges in optimizing energy consumption without missing data transmissions, as existing methods often require frequent state changes between active and inactive modes, leading to inefficiencies.
Innovation Solution
The method involves using a transceiver to periodically wake up and check for preambles, with address sequences and counter sequences in the preamble to determine if data packets are addressed to the terminal, allowing components to remain in an inactive state unless specifically needed, thereby optimizing energy usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If terminal devices frequently switch between active and inactive states to save energy, then energy consumption is reduced, but the risk of missing data transmissions increases
Solution Approach 1:
The patent applies preliminary action by having transmitting devices send preambles before actual data packets. These preambles contain address information that allows receiving devices to determine in advance whether they are the intended recipients. This enables devices to remain in low-power states longer while still being able to reliably detect and respond to targeted transmissions, thus resolving the contradiction between energy saving and transmission reliability.
Solution Approach 2:
The patent uses preambles as an intermediary element between the transmitting and receiving devices. The preamble carries address information that mediates the communication process, allowing receiving devices to make informed decisions about whether to wake up and process the full data packet. This intermediary mechanism enables energy-efficient operation while maintaining reliable data delivery to intended recipients.
2Reliability
If terminal devices remain in active state to ensure no data is missed, then data transmission reliability is improved, but energy consumption increases
Solution Approach 1:
The patent segments the data transmission process into two distinct parts: a preamble phase and a data packet phase. The preamble contains address information that can be processed with minimal power consumption, while the full data packet is only received when the device is confirmed to be the intended recipient. This segmentation allows devices to remain in low-power states for extended periods while maintaining reliable reception of targeted transmissions.
Solution Approach 2:
The patent implements partial action by having receiving devices process only the preamble portion of transmissions during low-power states, rather than processing complete data packets. This partial processing is sufficient to determine whether the device is the intended recipient, enabling energy-efficient operation while ensuring that targeted transmissions are reliably received when needed.
3Device complexity
If terminal devices use simple inactive/active state switching, then device complexity is reduced, but energy saving efficiency is limited
Solution Approach 1:
The patent extracts the address information from the main data packet and places it in the preamble portion. This extraction allows receiving devices to process critical addressing information with minimal power consumption while remaining in low-power states. The separation of address information from the full data packet enables more efficient energy management without significantly increasing device complexity.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a method comprising: receiving a network signal by a transceiver of an end device in a network, wherein the network signal contains a preamble sequence including a bit sequence, a first address sequence, a second address sequence and a data sequence; recognizing the preamble sequence by the transceiver, and determining a first address range from the first address sequence; and if an address of the end device lies in the first address range, setting an execution unit of the end device to an active state, determining, by means of the execution unit, a second address range from the second address sequence, and, if the address of the end device lies in the second address range, processing the data sequence.