UWB Ranging Schedule Coordination for Shared-Band Coexistence
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Solution Overview
Problem
Existing wireless communication systems face challenges in facilitating Ultra-Wideband (UWB) signal transmissions while avoiding interference from other wireless signal transmissions of the same frequency, particularly in 5G and 6G networks, which are expected to support diverse applications and higher data transfer speeds.
Innovation Solution
A method and device for scheduling UWB signal transmissions to avoid overlap with other wireless signal transmissions by determining a first signal transmission schedule based on receiving UWB schedule information, allowing UWB sessions to be conducted in the presence of other signaling sessions without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UWB signals are transmitted in the same frequency bands as other wireless signals (3.1 GHz to 10.6 GHz), then spectral efficiency and data transfer speeds are improved, but interference from other wireless signal transmissions occurs
Solution Approach 1:
The system performs preliminary scheduling of UWB ranging sessions by obtaining the first signal transmission schedule from other wireless communication systems before transmitting UWB signals. This advance planning allows the UWB device to select transmission times that do not overlap with other signals, preventing interference before it occurs
Solution Approach 2:
A scheduling mechanism acts as an intermediary between UWB transmission and other wireless signals. The system uses a ranging control message to indicate a second signal transmission schedule that coordinates UWB transmissions with existing schedules, serving as a mediator that harmonizes multiple communication systems operating in the same frequency band
2Ease of operation
If UWB ranging sessions are scheduled without considering other signal transmission schedules, then scheduling simplicity is maintained, but signal transmission overlap and interference occur
Solution Approach 1:
The scheduling system serves multiple functions simultaneously: it obtains existing signal transmission schedules, determines compatible UWB transmission times, and generates coordinated scheduling information. This multi-functional approach integrates complexity into a unified process that maintains ease of operation while ensuring reliable transmission
Solution Approach 2:
The system implements feedback by transmitting a ranging control message that indicates the second signal transmission schedule to the second UWB device. This feedback mechanism ensures both devices are aware of the coordinated schedule, maintaining simplicity while improving reliability through confirmed synchronization
3Adaptability or versatility
If multiple wireless communication systems operate simultaneously in the same frequency band, then network capacity and coverage are enhanced, but signal interference and transmission conflicts increase
Solution Approach 1:
The system segments the transmission timeline by dividing available signal transmission times into separate scheduled slots for different communication systems. By obtaining the first signal transmission schedule and selecting second available signal transmission times based on it, the system creates distinct time segments that prevent overlap while allowing multiple systems to operate in the same frequency band
Data Source
AI summary
A method of scheduling a UWB (Ultra-Wideband) ranging session includes: obtaining a first signal transmission schedule of first available signal transmission times of first wireless signals; and transmitting, from a first UWB device to a second UWB device, a ranging control message indicating a second signal transmission schedule including second available signal transmission times for second wireless signals that comprise UWB signals, wherein the second available signal transmission times are based on the first available signal transmission times.