UWB Beacon Synchronization for Collision-Free Band Multiplexing
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Solution Overview
Problem
Conventional UWB communication systems face synchronization issues among multiple devices, leading to increased collisions and reduced system capacity due to unsynchronized reservation blocks and intra-frame periods.
Innovation Solution
A control method that synchronizes communications by detecting beacons, establishing reservations with frame intervals and intra-frame intervals as integral multiples of symbol periods, and rotating transmission frequencies among frequency bands to align transmissions and prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional UWB communication systems use unsynchronized reservation blocks and intra-frame periods, then device operation is simpler, but collisions increase and system capacity decreases
Solution Approach 1:
The patent applies preliminary action by having devices detect beacons from other devices and establish reservations before actual data transmission occurs. The reservation block and intra-frame periods are pre-synchronized based on beacon signals, ensuring that transmission timing is coordinated in advance. This prevents collisions before they happen while maintaining relatively simple device operation through automated beacon-based coordination.
2Productivity
If frame intervals and intra-frame intervals are not synchronized to integral multiples of symbol periods, then device implementation is easier, but transmission collisions occur and throughput is reduced
Solution Approach 1:
The patent applies parameter changes by establishing that frame intervals and intra-frame intervals must be synchronized to integral multiples of the symbol period. This parameter relationship ensures that timing alignments are precise and collisions are prevented. The beacon-based reservation mechanism automatically adjusts timing parameters to satisfy this requirement, achieving high throughput while keeping implementation manageable through standardized timing relationships.
3Productivity
If multiple devices transmit simultaneously on common frequency bands, then system utilization increases, but collision probability increases
Solution Approach 1:
The patent applies segmentation by dividing the transmission timeline into reservation blocks and intra-frame periods that are synchronized across multiple devices. Each device receives a time-synchronized reservation based on beacon detection, which segments the transmission opportunity into non-overlapping intervals. This allows multiple devices to utilize the frequency band simultaneously without collision, as each device's transmission is confined to its assigned time segment while maintaining system-wide synchronization.
Data Source
AI summary
A control method of synchronizing communications between or among a plurality of devices in a communication system includes detecting beacons from the plurality of devices in the communication system, and establishing a reservation for at least a portion of the plurality of devices in the communication system. Each reservation is a frame interval in which to transmit symbols from one device to one or more of the other devices in the communications system. Each frame interval and intra-frame interval is set according to the established reservation. Each frame interval and intra-frame interval is a plural, integral number of symbol periods in duration.