Cooperative Data Transfer via Dual-Layer Synchronization
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Solution Overview
Problem
In dense urban environments, existing wireless communication systems face synchronization issues due to the reuse of preamble index sequences by access stations, leading to propagation delays and inefficient data transfer when endpoints attempt to connect with multiple access stations, resulting in unnecessary network re-entry and traffic outages.
Innovation Solution
The method involves establishing a primary wireless connection using a primary synchronization channel and detecting a secondary synchronization channel with sufficient signal strength from an alternate access station, allowing for cooperative data transfer operations by enabling endpoints to communicate with multiple access stations and dynamically adjust ranging parameters to manage propagation delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If access stations reuse preamble index sequences to improve resource utilization, then network capacity increases, but synchronization conflicts and propagation delays occur
Solution Approach 1:
The patent segments the synchronization process into two distinct stages: coarse synchronization using Cell IDs (reusable, lower precision) and fine synchronization using BSIDs (unique, higher precision). This segmentation allows multiple access stations to reuse preamble sequences for resource efficiency while maintaining reliable synchronization through the second-stage BSID identification that resolves conflicts and eliminates propagation delays.
Solution Approach 2:
The patent performs preliminary coarse synchronization using Cell IDs before final connection establishment. This preliminary action allows endpoints to quickly identify potential access stations using reusable preambles, then subsequently resolves synchronization conflicts through BSID-based fine synchronization, ensuring both high network capacity and reliable connection establishment.
2Productivity
If endpoints connect to multiple access stations to increase bandwidth, then data transfer rate improves, but synchronization complexity and propagation delay management increase
Solution Approach 1:
The patent segments synchronization into two layers: Cell ID-based coarse synchronization that handles multiple access stations efficiently, and BSID-based fine synchronization that resolves individual station identification. This dual-layer approach enables endpoints to manage multiple access stations for increased bandwidth while keeping synchronization complexity manageable through hierarchical processing.
Solution Approach 2:
The patent introduces BSIDs as intermediary identifiers that mediate between the reusable Cell IDs and the actual access station connections. This intermediary layer allows endpoints to efficiently handle multiple access stations by first grouping them through Cell ID detection, then resolving individual connections through BSID-based fine synchronization, reducing overall synchronization complexity.
3Ease of operation
If traditional single connection mode is used to simplify operations, then device complexity decreases, but bandwidth availability and data transfer efficiency are limited
Solution Approach 1:
The patent segments the connection establishment process into automatic coarse synchronization (simple, Cell ID-based) and optional fine synchronization (enhanced, BSID-based). This segmentation maintains ease of operation for basic single-connection scenarios while enabling enhanced multi-connection capabilities when bandwidth requirements demand, without forcing complexity on simple use cases.
Solution Approach 2:
The patent creates a universal synchronization mechanism that functions effectively for both single-connection and multi-connection scenarios. The dual-layer Cell ID/BSID approach provides a unified framework that automatically adapts to different connection modes, maintaining operational simplicity for basic cases while enabling enhanced bandwidth availability when multiple access stations are utilized.
Data Source
AI summary
A method for cooperative data transfer includes establishing a primary wireless connection with a primary access station. The primary wireless connection uses a primary synchronization channel that is transmitted during a first frame of a super frame. The super frame comprises a plurality of frames. The method also includes detecting a secondary synchronization channel generated by an alternate access station during a subsequent frame of the super frame. The method further includes determining whether the detected secondary synchronization channel has a signal strength greater than a threshold signal strength. The method additionally includes receiving permission to begin a cooperative data transfer operation with both the primary access station and the alternate access station.