Assisting Radio Access Technology Synchronization for Wi-Fi Reliability
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Solution Overview
Problem
Current wireless communication systems face challenges in achieving reliable and efficient communication using multiple radio access technologies (RATs), particularly due to the asynchronous nature of Wi-Fi, which leads to interference and reduced data throughput, while cellular technologies like LTE offer reliability but at higher processing and power costs.
Innovation Solution
The system employs an assisting RAT, such as LTE, to synchronize and leverage physical layer properties of another RAT, like Wi-Fi, by aligning timelines and using common MAC layers to enhance communication reliability and coverage, thereby mitigating interference and improving data throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If Wi-Fi is used for communication, then bandwidth cost is reduced and robust communication is provided, but reliability is reduced due to noisy channel and lack of error correction
Solution Approach 1:
The patent combines Wi-Fi and LTE communications into a unified system where Wi-Fi provides data transmission and LTE provides error correction and reliability mechanisms. The MAC layer merges both RATs to work together, allowing Wi-Fi's bandwidth advantages to be retained while LTE's reliability features compensate for Wi-Fi's noisy channel characteristics.
Solution Approach 2:
The patent introduces a common MAC layer as an intermediary that manages both Wi-Fi and LTE RATs. This MAC layer acts as a mediator that coordinates between the unreliable Wi-Fi physical layer and the higher layers, implementing error correction and reliability mechanisms through LTE while allowing Wi-Fi to handle data transmission.
2Reliability
If LTE is used for communication, then reliability is improved through synchronized communications and error correction, but processing power consumption and cost increase
Solution Approach 1:
The patent applies different qualities to different parts of the communication system: Wi-Fi is used for data transmission where high bandwidth is needed, while LTE is used specifically for control signaling and error correction where reliability is critical. This local differentiation allows the system to get reliability where needed without applying LTE's high processing requirements to all communication functions.
Solution Approach 2:
The patent uses LTE partially - only for the functions that require its reliability features (error correction, synchronized timing, control signaling) - rather than using it for all communication functions. This partial application of LTE avoids the full processing power consumption of a pure LTE system while still obtaining the reliability benefits where necessary.
3Quantity of substance
If Wi-Fi is used without synchronization, then bandwidth is available and cheap, but interference increases and data throughput is reduced
Solution Approach 1:
The patent synchronizes Wi-Fi communications with LTE's timeline, creating a common timing reference for both RATs. This synchronization equalizes the timing conditions between Wi-Fi and LTE, allowing Wi-Fi to operate in a more predictable environment with reduced interference, thereby improving data throughput while maintaining bandwidth availability.
Data Source
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AI summary
Systems and methods for communicating in a wireless network using a first radio access technology (RAT) and an assisting RAT are disclosed. A first connection can be established with an access point using the first RAT, and a second connection can be established with the access point using the assisting RAT. A timing of the first connection can be synchronized based at least in part on a timeline of the assisting RAT. Data can be communicated with the access point over at least the first connection based at least in part on synchronizing the timing, and control data can be communicated with the access point over at least the second connection, wherein the control data is related to the communicating data over at least the first connection.