Narrowband Communication for UWB Synchronization via LBT
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transmitting narrowband communications for ultra-wideband communications, particularly in providing time and frequency synchronization or scheduling information.
Innovation Solution
The method involves performing a listen-before-talk (LBT) procedure for a narrowband communication to provide time and frequency synchronization or scheduling information for ultra-wideband communications, and transmitting the narrowband communication if the LBT procedure is successful.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If narrowband communication is used to provide synchronization and scheduling information for UWB communication, then communication efficiency is improved, but interference from other wireless systems worsens
Solution Approach 1:
The patent performs LBT procedure before transmitting narrowband communication signals to check if the channel is free from interference. This preliminary action ensures that synchronization and scheduling information are only transmitted when the channel is clear, thus improving communication efficiency while avoiding interference with other wireless systems.
Solution Approach 2:
The narrowband communication acts as an intermediary between the LBT procedure and the UWB communication. It carries synchronization and scheduling information that enables coordinated UWB transmissions, while the LBT procedure mediates access to the shared spectrum resource, preventing interference with other systems.
2Object-affected harmful factors
If LBT procedure is performed before narrowband communication, then interference is reduced, but transmission time increases
Solution Approach 1:
The LBT procedure performs a simplified energy detection check rather than a complete channel assessment, using partial action to quickly determine if the channel is busy. This approach reduces interference while minimizing the time added to the transmission process.
Solution Approach 2:
The LBT procedure is performed in advance as a preliminary check before actual data transmission. By completing this interference check beforehand, the system ensures clean transmissions while the time penalty is paid only once before the main communication occurs.
3Reliability
If narrowband communication provides time and frequency synchronization information, then UWB communication reliability is improved, but system complexity increases
Solution Approach 1:
The patent combines synchronization and scheduling information into a single narrowband communication signal. This merging approach improves UWB communication reliability by providing both time and frequency synchronization in one transmission, while reducing system complexity compared to separate signaling channels.
Solution Approach 2:
The narrowband communication signal serves multiple functions simultaneously: it provides time synchronization, frequency synchronization, and scheduling information for UWB transmissions. This multi-functionality improves reliability while avoiding the need for multiple separate signaling mechanisms.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless device may perform a listen-before-talk (LBT) procedure for a narrowband communication that provides time and frequency synchronization and/or scheduling information for an ultra-wideband (UWB) communication. The wireless device may transmit the narrowband communication in response to the LBT procedure being successful. The wireless device may transmit the UWB communication based at least in part on the time and frequency synchronization and/or scheduling information. Numerous other aspects are described.