Ambient Wireless Resynchronization Field for Clock Drift
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Solution Overview
Problem
Ambient wireless devices lack internal power sources and experience poor clock accuracy due to their low cost and complexity, leading to significant clock drift and synchronization issues during data packet communication.
Innovation Solution
Incorporating a processing system that performs clock synchronization and resynchronization using synchronization and resynchronization fields within data packets, allowing for symbol timing alignment and reduced clock drift.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If ambient wireless devices use low cost and complexity designs, then device cost and complexity are reduced, but clock accuracy deteriorates leading to significant clock drift
Solution Approach 1:
The patent applies preliminary action by performing clock synchronization at the beginning of data packet reception using a synchronization field. This initial synchronization prepares the ambient wireless device's clock before actual data communication begins, ensuring accurate timing without requiring complex continuous synchronization mechanisms throughout the entire communication process.
Solution Approach 2:
The patent implements periodic action by inserting resynchronization fields at regular intervals within the data packet structure. These periodic resynchronization fields allow the ambient wireless device to maintain clock accuracy throughout extended data communications by periodically adjusting timing based on known reference patterns, without requiring complex real-time synchronization.
2Measurement precision
If ambient wireless devices perform clock synchronization continuously, then clock accuracy is maintained, but device complexity and energy consumption increase
Solution Approach 1:
The patent performs clock synchronization in advance at the start of each data packet using a dedicated synchronization field. This preliminary synchronization establishes accurate timing before data transmission begins, eliminating the need for complex continuous synchronization mechanisms during the entire communication process.
Solution Approach 2:
The patent divides the synchronization process into discrete segments: an initial synchronization field at the packet start, followed by periodic resynchronization fields at defined intervals within the data packet. This segmentation allows the ambient wireless device to maintain clock accuracy through simple, periodic updates rather than complex continuous synchronization.
3Device complexity
If ambient wireless devices use simple synchronization methods, then device complexity is reduced, but timing synchronization accuracy deteriorates over data packet durations
Solution Approach 1:
The patent implements periodic resynchronization by inserting resynchronization fields at regular intervals within the data packet. These periodic reference points allow the ambient wireless device to continuously refresh its timing synchronization without requiring complex algorithms, maintaining accurate symbol timing throughout extended data communications.
Solution Approach 2:
The patent establishes initial timing synchronization using a synchronization field at the beginning of each data packet. This preliminary timing establishment provides a known reference point that simplifies subsequent timing recovery, allowing the device to use simple periodic resynchronization rather than complex continuous timing algorithms.
Data Source
AI summary
This disclosure provides methods, components, devices and systems for ambient power resynchronization field. Some aspects more specifically relate to the use of one or more resynchronization fields that may be used to periodically resynchronize or adjust symbol timing alignment at an ambient wireless device. For example, some ambient wireless devices may experience poor clock accuracy for communications due to their low cost and complexity. To support enhanced timing accuracy and to reduce clock drift for a communicated data packet, the ambient wireless device may use a resynchronization field within the data field of a data packet to perform ongoing timing resynchronization and symbol timing alignment during the resynchronization field. One or more resynchronization fields may be included in the data field of the data packet after every “N” octets of data, so that the ambient wireless device may perform periodic clock resynchronization.