LTE Priority Network Selection for Voice Services
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Solution Overview
Problem
In wireless communication systems, user equipment (UE) faces challenges in determining the correct connection between Long Term Evolution (LTE) and New Radio (NR) networks, leading to potential wrong connections.
Innovation Solution
A communication device and method that prioritizes connecting to the LTE network over the NR network for voice services by executing instructions stored in a processing circuit, which involves receiving and redirecting messages to ensure proper network selection and IMS service packet transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the UE randomly selects between LTE and NR networks, then the connection establishment is simple, but the connection accuracy deteriorates leading to wrong connections
Solution Approach 1:
The patent changes the selection parameter from random to priority-based. The UE is configured with network selection priorities where LTE is preferred over NR for voice services. This parameter change enables accurate network selection while maintaining simple operation through automatic priority-based decision making.
2Measurement precision
If the UE prioritizes LTE network for voice services, then the connection accuracy is improved, but the device complexity increases due to additional selection logic
Solution Approach 1:
The patent applies preliminary action by pre-configuring the UE with network selection priorities before actual connection decisions are needed. The LTE-preferred policy is established in advance through network configuration or device settings, so that during actual connection attempts, the UE simply follows the pre-established priority rules without complex real-time decision logic.
3Reliability
If the NR network redirects to LTE network for IMS services, then the service reliability is improved, but the connection time increases due to redirection procedure
Solution Approach 1:
The patent applies preliminary action by having the UE pre-configured with LTE as the preferred network for voice and IMS services. When a connection attempt is made to NR network, the UE proactively selects LTE based on pre-established priorities, avoiding the need for time-consuming redirection procedures and ensuring faster connection establishment while maintaining high service reliability.
Data Source
AI summary
A communication device of handling connection comprises a storage device for storing an instruction and a processing circuit coupled to the storage device. The processing circuit is configured to execute the instructions stored in the storage device. The instruction comprises prioritizing selecting a long term evolution (LTE) network over a new radio (NR) network, when the communication device is configured to enable a voice service.