Multi-Link Coordination for Frequency Switching Under Link Failures
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Solution Overview
Problem
Multi-link devices experience frequent connection failures and interference due to the susceptibility of higher frequency links to physical obstacles and interference, leading to instability in data transmission.
Innovation Solution
Implementing link coordination techniques that shift communications from higher frequency links to lower frequency links in response to transmission failures, transmit data over multiple links to ensure better quality of service, and establish higher frequency links when devices move into coverage areas, using a controller to manage these transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If higher frequency links are used for data transmission, then transmission speed and bandwidth are improved, but connection stability and reliability deteriorate due to susceptibility to physical obstacles and interference
Solution Approach 1:
The system dynamically switches between different frequency links based on real-time transmission conditions. When the primary high-frequency link experiences failures, the system automatically transitions to alternative links with different frequencies, making the communication system adaptable and dynamic rather than static
Solution Approach 2:
The system changes the frequency parameter of the transmission link in response to detected transmission failures. By modifying this key parameter, the system can switch from problematic high-frequency links to more stable alternative links, thereby resolving the contradiction between speed and reliability
2Reliability
If multiple links are maintained simultaneously for redundancy, then reliability and quality of service are improved, but device complexity and resource management difficulty increase
Solution Approach 1:
The communication system is segmented into multiple independent links with different frequency characteristics. Each link can be managed and controlled independently, allowing the system to maintain redundancy while keeping individual link management relatively simple through modular organization
Solution Approach 2:
The system implements feedback mechanisms to monitor transmission success and failure across multiple links. Based on this feedback, the controller automatically adjusts link usage, enabling intelligent resource management that reduces complexity by making management decisions based on real-time conditions rather than requiring complex predetermined configurations
3Reliability
If link switching is performed frequently in response to transmission failures, then connection stability is improved, but transmission delays and loss of time increase
Solution Approach 1:
The system performs preliminary actions by pre-establishing multiple potential transmission links before failures occur. When a failure is detected, the switch to an alternative link can be executed more quickly because the alternative path is already prepared and available, reducing the time penalty associated with switching
Data Source
AI summary
A system includes a memory and a processor communicatively coupled to the memory. The processor, in response to determining that a first number of transmissions over a first link with a first frequency has failed, selects a second link with a second frequency for transmission. The second frequency is lower than the first frequency. The processor also, in response to determining that a second number of transmissions over the second link has failed, one or more of (i) stop the transmissions over the second link or (ii) begins transmissions over a third link with a third frequency. The second number is greater than the first number.