Fragmented UWB Packet Signaling Under Emissions Limits
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Solution Overview
Problem
Existing wireless communication systems face challenges in achieving a desired operating range and efficiency due to regulatory constraints and technical limitations, particularly with ultra-wideband (UWB) and narrowband (NB) signaling, which restrict the use of spectral bands and energy emissions.
Innovation Solution
A hybrid wireless system that combines UWB and NB signaling, using NB signaling for synchronization and control to assist UWB signaling, allowing for fragmented UWB transmissions over multiple intervals, thereby improving operating range and efficiency by optimizing energy usage and reducing regulatory compliance issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UWB signaling is used for high bandwidth communication, then measurement precision and ranging accuracy are improved, but regulatory emissions limits are exceeded
Solution Approach 1:
The UWB packet is divided into multiple fragments that are transmitted separately over different time intervals. This segmentation allows the total energy emission to be distributed across multiple intervals, each complying with regulatory limits while the aggregate provides sufficient signal strength for accurate ranging and measurement.
2Ease of operation
If NB signaling is used for synchronization, then ease of operation is improved, but device complexity increases due to hybrid system integration
Solution Approach 1:
The system merges NB and UWB signaling into a hybrid architecture where NB provides robust synchronization and control functions while UWB handles high-precision ranging and data transmission. This combination leverages the strengths of both signaling types, with NB offering simplicity and reliability for timing reference and UWB providing high bandwidth and measurement precision.
3Reliability
If fragmented UWB transmissions are used over multiple intervals, then regulatory compliance is improved, but loss of time increases due to multiple transmission intervals
Solution Approach 1:
The system employs periodic transmission of fragmented UWB packets across multiple time intervals, with each fragment transmitted in a structured sequence. This periodic approach ensures regulatory compliance by distributing emissions over time while maintaining efficient communication through the organized fragmentation and reassembly process.
Data Source
AI summary
Techniques are provided for utilizing a hybrid of ultra-wideband (UWB) and narrowband (NB) signaling to provide more efficient operating range and operating efficiency. In one example, a first device may transmit a first packet via an NB signal to a second device, whereby the first packet comprises information indicating to the second device a time period for reception of a second (UWB) packet. In this example, the second packet may comprise a first partition and a second partition, whereby the first partition comprises a first plurality of fragments and the second partition comprising a second plurality of fragments. The respective fragments of each plurality of fragments may be transmitted via a UWB signal. The first device may then transmit the first plurality of fragments, and then subsequently transmit the second plurality of fragments to the second device, the first and second pluralities respectively being associated with different fragment types.