Peripheral Device Synchronization Messages for Lower-Latency WPAN Links
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Solution Overview
Problem
Existing Bluetooth and Bluetooth Low Energy (BLE) technologies face limitations such as limited range, data capacity throughput, and susceptibility to interference from other devices communicating in the same frequency band.
Innovation Solution
A method and apparatus for wireless communication that involves transmitting synchronization messages to initiate communication events with multiple peripheral devices, allowing for efficient monitoring of responses within specific time resources, thereby improving synchronization and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If traditional Bluetooth or BLE protocols are used for WPAN communication, then power consumption is reduced through low duty cycle operation and sleep mode, but data throughput and communication efficiency are limited
Solution Approach 1:
The communication protocol is segmented into distinct phases: a synchronization phase with dedicated time resources for synchronization messages, and a data transfer phase. This segmentation allows efficient synchronization without continuously occupying data channels, improving overall communication efficiency while maintaining low power consumption through structured, periodic operations.
Solution Approach 2:
The patent implements periodic communication events with defined intervals, where synchronization messages are transmitted at regular intervals using time division multiplexing. This periodic structure enables devices to enter sleep modes between events (conserving power) while ensuring timely synchronization and data transfer when needed, resolving the contradiction between power saving and communication efficiency.
2Measurement precision
If synchronization messages are transmitted using time division multiplexing in WPAN LE, then synchronization accuracy is improved, but communication latency increases due to structured time resources
Solution Approach 1:
Synchronization messages are transmitted in advance at the beginning of each communication event using dedicated time resources. This preliminary synchronization action establishes timing references before data transfer begins, ensuring accurate synchronization without delaying the actual data communication, thus reducing overall latency while maintaining precision.
Solution Approach 2:
The patent introduces a dedicated time dimension for synchronization messages separate from data transmission channels. By allocating specific time resources solely for synchronization purposes within the time division multiplexing framework, the system achieves high synchronization accuracy without blocking data throughput paths, effectively resolving the latency-precision trade-off through dimensional separation.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a central device may transmit a first communication to initiate a first communication event. The central device may transmit a first synchronization message associated with a first peripheral device and a second synchronization message associated with a second peripheral device during a first time resource and a second time resource, respectively, associated with a first communication event. The central device may transmit a second communication to initiate a second communication event. The central device may monitor, during the second communication event, for a first response from the first peripheral device during a third time resource, and for a second response from the second peripheral device during a fourth time resource. Numerous other aspects are described.