In-Device Coexistence Indication Message Transmission Control
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Solution Overview
Problem
In wireless communication systems, user equipment (UE) often transmit in-device coexistence indication messages unnecessarily, leading to inefficient use of radio resources and potential network overload due to difficulties in measuring and defining triggering conditions for interference scenarios.
Innovation Solution
A method where the base station configures user equipment (UE) to transmit in-device coexistence indication messages only based on specific information, allowing or disallowing the transmission of these messages and specifying preferred solutions like frequency division multiplexing (FDM) or time division multiplexing (TDM) to mitigate interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE transmits IDC indication messages based on UE implementation triggering, then the system can respond to interference scenarios, but unnecessary transmissions occur leading to radio resource waste and network overload
Solution Approach 1:
The invention changes the triggering parameter from UE implementation-based to network configuration-based. The network configures specific triggering conditions (e.g., interference thresholds, time windows, frequency conditions) that the UE must evaluate before transmitting IDC indication messages. This parameter change ensures messages are only sent when actual interference conditions are met, eliminating unnecessary transmissions while maintaining reliable interference mitigation.
2Reliability
If UE transmits IDC indication messages frequently to ensure interference is reported, then interference mitigation is reliable, but network overload occurs and system efficiency decreases
Solution Approach 1:
The invention implements a feedback mechanism where the network configures triggering conditions and receives IDC indication messages only when those conditions are met. The network can adjust triggering parameters based on system load and interference patterns, creating a closed-loop feedback system that balances reliable interference reporting with system efficiency. This prevents network overload by controlling the frequency and timing of messages based on actual interference conditions rather than frequent UE-initiated transmissions.
Data Source
AI summary
A user equipment (UE) and method are provided for transmitting an in-device coexistence (IDC) indication message in a wireless communication system. The UE receives a configuration message including an IDC indication from a base station. The UE transmits an IDC indication message to the base station if the UE determines that the IDC indication contains specific information. The specific information comprises an activation bit. The presence of the activation bit in the configuration message represents permission for the UE to transmit the IDC indication message. The IDC indication message includes frequency division multiplexing (FDM) assistant information. The FDM assistant information includes information on an unusable frequency in which interference from a long-term evolution (LTE) module in the UE to other coexisting technology modules in the UE or interference from other coexisting technology modules in the UE to the LTE module in the UE is expected.