Multi-Link Wireless Transmission for Real-Time Data
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Solution Overview
Problem
Existing wireless systems struggle to meet the absolute delay requirements of real-time applications in wireless local area networks (WLANs) due to inefficiencies in data transmission and reception.
Innovation Solution
Implementing a multi-link data transmission system with a transmitting station and receiving station that utilize multiple channels and prioritize real-time application (RTA) traffic by duplicating data and transmitting it through primary and secondary links using enhanced distributed channel access (EDCA) to ensure timely delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If data is transmitted through a single wireless channel in conventional WLAN systems, then the system complexity is low, but the delay requirement for real-time applications cannot be met
Solution Approach 1:
The patent divides the wireless communication system into multiple independent links (first link and second link), each capable of transmitting data independently. This segmentation allows parallel transmission paths, reducing overall transmission delay for real-time applications while distributing system complexity across multiple manageable components rather than requiring a single complex channel
Solution Approach 2:
The patent transitions from a single-dimension (single channel) transmission approach to a multi-dimensional approach by establishing multiple transmission links. This dimensional expansion creates parallel data paths that can simultaneously carry traffic, effectively reducing transmission delay without proportionally increasing complexity at any single point in the system
2Reliability
If multiple links are used for data transmission, then the reliability for real-time applications is improved, but the device complexity increases
Solution Approach 1:
The patent performs preliminary actions by pre-establishing multiple transmission links and pre-configuring their parameters before actual data transmission begins. This includes setting up the first and second links with appropriate communication parameters in advance, so that when real-time data needs to be transmitted, the reliable paths are already prepared and ready for immediate use, reducing the complexity of dynamic link management
Solution Approach 2:
The patent creates a multi-functional transmission system where the first link and second link can serve different purposes: one link can handle normal traffic while the other provides backup or handles high-priority real-time traffic. This universality allows the system to maintain high reliability through multiple links while managing complexity by having standardized, interchangeable link configurations that can be activated based on traffic requirements
Data Source
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AI summary
A transmitting station according to an embodiment includes a first wireless signal processing unit (140), a second wireless signal processing unit (150), and a link management unit. The first wireless signal processing unit and the second wireless signal processing unit are configured to transmit wireless signals using different channels. The link management unit manages link states of the first wireless signal processing unit and the second wireless signal processing unit. The link management unit is configured to: generate, when first data input is of a specific type, second data that is a duplicate of the first data; attach, first identification information indicating that the first data is original data, to the first data and attach, second identification information indicating that the second data is replicated data, to the second data; and output the first data with the first identification information attached to the first wireless signal processing unit and output the second data with the second identification information attached to the second wireless signal processing unit.