UE Radio Capability Update for WLAN-LTE Interference
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Solution Overview
Problem
User equipment often faces interference between WLAN operations and LTE in unlicensed spectrum service when using the same unlicensed RF spectrum band, as some devices cannot simultaneously perform both operations.
Innovation Solution
The user equipment can notify the wireless operator's base station to disable LTE in unlicensed spectrum service when engaged in WLAN operations, using a tracking area update request with a 'UE Radio Capability Information Update Needed' element to initiate an RRC capabilities exchange, allowing the base station to deactivate LTE service and avoid interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If user equipment performs both WLAN operations and LTE in unlicensed spectrum service simultaneously, then communication versatility is improved, but radio frequency interference increases
Solution Approach 1:
The system dynamically switches between WLAN and LTE operations based on real-time conditions. The user equipment can transition between modes using tracking area update requests and RRC capability exchanges, allowing adaptive selection of the optimal communication mode to avoid interference while maintaining versatility.
Solution Approach 2:
The base station acts as an intermediary that mediates between WLAN and LTE operations. It receives capability information from the user equipment, processes the tracking area update requests, and coordinates the mode switching to ensure seamless transition without radio frequency interference.
2Object-affected harmful factors
If user equipment disables LTE service during WLAN operations, then radio frequency interference is reduced, but service availability decreases
Solution Approach 1:
The system implements periodic capability exchange and tracking area update procedures that allow the user equipment to inform the base station of its operational status. This periodic communication enables the base station to adjust LTE service availability accordingly, disabling it during WLAN operations and re-enabling it when needed, thus balancing interference reduction with service availability.
3Manufacturing precision
If user equipment uses tracking area update request to notify base station of capability changes, then service configuration accuracy is improved, but signaling overhead increases
Solution Approach 1:
The tracking area update request message serves multiple functions: it notifies the base station of WLAN operation status, conveys radio capability information, and triggers appropriate service configuration changes. By making this single message multi-functional, the system reduces the need for separate signaling messages, thereby minimizing overhead while maintaining configuration accuracy.
Data Source
AI summary
A wireless local area network (WLAN) operations status with regard to a wireless access point may be changed for a user equipment (UE). A request, based on changing the WLAN operations status for the UE, may be sent to a base station. The request may cause the base station to send, to the UE, a first message based on the request. The first message may be received from the base station. A second message, based on the first message, may be sent to the base station. The second message may cause the base station to change availability of a radio service based on changing the WLAN operations status for the UE.