LTE-U and WiFi 5GHz Channel Interference Coordination
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Solution Overview
Problem
LTE-U receiving antennas experience significant co-channel interference when WIFI signal transmitters operate at 5 GHz, leading to reduced network access rates and quality of WIFI AP/P2P services.
Innovation Solution
A method and system that monitor status changes in LTE-U and adjust system parameters to control the usage of 5 GHz channels, staggering their usage to avoid interference, by reporting status changes from the radio resource control layer to the mobile terminal application layer and configuring a WIFI available channel list to toggle the 5 GHz channel on and off.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal is employed as the WIFI AP/P2P and the WIFI signal transmitter works at 5 GHz, then the WIFI service is provided, but the LTE-U receiving antenna will receive large co-channel interference
Solution Approach 1:
The patent dynamically adjusts the 5 GHz channel usage based on LTE-U status. When LTE-U is activated, the system dynamically switches off the 5 GHz WIFI channel to avoid interference; when LTE-U is deactivated, the 5 GHz channel is switched on to provide WIFI service. This dynamic adaptation resolves the contradiction between providing WIFI service and avoiding co-channel interference.
Solution Approach 2:
The patent changes the operational parameter of the 5 GHz channel (on/off state) based on LTE-U status changes. By monitoring LTE-U activation/deactivation events and相应ly adjusting the WIFI channel configuration, the system eliminates co-channel interference while maintaining service availability.
2Adaptability or versatility
If the 5 GHz channel is used for WIFI transmission, then WIFI service is available, but the LTE-U network access rate is greatly reduced
Solution Approach 1:
The system dynamically controls the 5 GHz channel based on real-time LTE-U status. When LTE-U is active, the 5 GHz channel is switched off to ensure high network access rates; when LTE-U is inactive, the channel is switched on to provide WIFI service. This dynamic time-division approach resolves the contradiction between service availability and network performance.
3Productivity
If the LTE-U occupies a 5 GHz unlicensed band channel, then the available network traffic for cellular data communications is increased, but the WIFI access of the terminal user may fail
Solution Approach 1:
The patent implements periodic channel access coordination by monitoring LTE-U status changes and相应ly adjusting WIFI channel availability. This periodic synchronization ensures that WIFI access attempts occur only when the 5 GHz channel is not occupied by LTE-U, thereby maintaining both network traffic capacity and access reliability.
Data Source
AI summary
Disclosed in the present invention are a LTE-U and WIFI 5G channel self-interference addressing method and system. An status change message of the LTE-U is received by a radio resource control layer of an LTE protocol stack, and reported to a mobile terminal application layer by a registration module of an non-access layer; and corresponding system parameters are configured according to the status change message of the LTE-U, and a WIFI available channel list is configured by using the system parameters to control the on and off of the 5 GHz channel. Therefore, a user can enjoy a high rate brought by the LTE-U network, and the WIFI hotspot and P2P of the user are ensured to be available externally, thus creating great convenience.