LTE-Assisted Wi-Fi Synchronization for Interference Reduction
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Solution Overview
Problem
Current wireless communication technologies face challenges in achieving reliable and efficient communication, particularly in unlicensed spectrum bands, where interference and coverage issues are prevalent due to asynchronous nature and high processing costs of cellular technologies like LTE, and the noise and interference in Wi-Fi networks.
Innovation Solution
The method involves using a cellular technology like LTE as an assisting RAT to synchronize and enhance Wi-Fi communications by aligning timelines, leveraging physical layer properties such as HARQ and CRC for improved reliability and coverage, while maintaining cost-effectiveness by using Wi-Fi for high data rate transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LTE is used to provide reliable synchronized communications with HARQ and CRC checks, then communication reliability is improved, but processing power consumption and bandwidth costs increase
Solution Approach 1:
The patent segments the communication functions by separating LTE control plane functions (synchronization, reliability checks) from Wi-Fi data plane functions (high throughput data transmission). The LTE connection handles signaling and control while Wi-Fi handles bulk data transfer, allowing each RAT to operate in its optimal mode without unnecessary processing overhead.
Solution Approach 2:
The access point implements multi-functionality by supporting both LTE and Wi-Fi RATs simultaneously, allowing it to serve as both a cellular base station and a Wi-Fi access point. This enables the system to leverage the strengths of both RATs - LTE for reliable control and Wi-Fi for high-speed data - within a single unified platform.
2Adaptability or versatility
If LTE is used in unlicensed spectrum to free licensed band usage, then spectrum utilization is improved, but processing power consumption remains high
Solution Approach 1:
The patent employs Wi-Fi as a 'cheaper' alternative for data transmission in the unlicensed spectrum, replacing expensive LTE data bearers with lower-cost Wi-Fi data transmission. While LTE provides the control framework, actual data transmission uses Wi-Fi's more cost-effective unlicensed spectrum resources without incurring LTE-level processing costs.
3Productivity
If Wi-Fi is used for high data rate transmissions, then bandwidth efficiency is improved, but communication reliability and coverage are reduced due to noise and interference
Solution Approach 1:
The LTE control connection serves as an intermediary that establishes and manages the Wi-Fi data connection. LTE provides the reliable control plane that sets up bearers, performs authentication, and manages connectivity, while Wi-Fi handles the actual high-speed data transmission. This intermediary control layer ensures reliability without compromising Wi-Fi's high throughput capabilities.
4Quantity of substance
If Wi-Fi is used as offload for LTE data, then licensed spectrum capacity is improved, but communication reliability is reduced due to Wi-Fi's noisy channel
Solution Approach 1:
The patent segments communication functions by separating LTE control plane functions (synchronization, reliability checks) from Wi-Fi data plane functions (high throughput data transmission). The LTE connection handles signaling and control while Wi-Fi handles bulk data transfer, allowing each RAT to operate in its optimal mode without unnecessary processing overhead.
Data Source
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 a user equipment (UE) using the first RAT, and a second connection can be established with the UE using an assisting RAT. A timing of the first connection can be synchronized based at least in part on a timeline of the assisting RAT, and a neighboring access point can be collaborated with in communicating with a UE over at least the first connection.