RRC Message Consolidation for Inter-RAT Handover and Proximity
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Solution Overview
Problem
Current LTE systems require separate RRC connection reconfiguration messages for inter-RAT handover and proximity indication configuration, leading to delays and increased battery power consumption in user equipment (UE) due to inefficient messaging processes.
Innovation Solution
Incorporating proximity indication configuration information into a single RRC connection reconfiguration message for both handover and proximity indication processes, allowing simultaneous execution of inter-RAT handover and proximity indication configuration within the UE.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate RRC connection reconfiguration messages are used for handover and proximity indication configuration, then configuration completeness is ensured, but messaging overhead and processing delays increase
Solution Approach 1:
The patent combines handover configuration and proximity indication configuration into a single RRC connection reconfiguration message. This merging eliminates the need for separate messaging, reducing processing delays and messaging overhead while ensuring both configurations are delivered atomically in one operation.
Solution Approach 2:
The RRC connection reconfiguration message is enhanced to serve multiple functions simultaneously: it performs both the handover configuration and the proximity indication configuration. This multi-functionality allows a single message to accomplish what previously required two separate messages, improving efficiency without sacrificing configuration completeness.
2Reliability
If separate RRC connection reconfiguration messages are used for handover and proximity indication configuration, then configuration accuracy is maintained, but battery power consumption increases
Solution Approach 1:
By merging handover and proximity indication configurations into one RRC message, the UE processes fewer separate messages, reducing the cumulative power consumption associated with message reception, parsing, and application. This single-message approach maintains configuration accuracy while significantly reducing battery power consumption.
Solution Approach 2:
The patent converts the potential harm of increased message complexity into a benefit by consolidating multiple configurations into one message. The increased information density in a single message reduces the total number of message handling operations, thereby reducing power consumption while maintaining all necessary configuration accuracy.
3Reliability
If multiple RRC connection reconfiguration messages are used, then configuration detail is preserved, but device complexity increases
Solution Approach 1:
The patent merges multiple configuration tasks into a single RRC connection reconfiguration message that contains both handover parameters and proximity indication parameters. This reduces the complexity of the messaging process by eliminating sequential message handling while preserving all necessary configuration details within the unified message structure.
Data Source
AI summary
A method and system configures proximity indication in a wireless device as part of a network handover procedure to handover the wireless device from a first radio access network (RAN) using a radio access technology (RAT) to a second RAN using a different RAT. The first RAN may use third generation (3G) wireless technology to initiate a process to hand over a wireless device to the second RAN, which utilizes long term evolution (LTE) technology. As part of the handover process, the second RAN generates a handover command message that additionally includes proximity indication configuration information to enable the wireless device to configure proximity indication reporting. The handover command message is sent through the first RAN to the wireless device, where the handover command message is utilized to configure proximity indication reporting and to perform the handover from the first RAN to the second RAN.