RNA Configuration Signaling Optimization in 5G Networks
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Solution Overview
Problem
Current signaling methods for RAN notification areas in 5G networks are inefficient, particularly in scenarios where frequent data sessions lead to repeated transmission of RNA configuration information, which is often redundant and wasteful, especially when the wireless device already has the necessary information stored in the NAS layer.
Innovation Solution
The proposed solution involves efficient signaling of RAN notification areas by referencing existing information stored in the wireless device's NAS layer, using pointers or bitmaps to reduce the number of bits required for signaling, thereby minimizing redundant data transmission and optimizing the RNA configuration process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RNA configuration information is transmitted repeatedly during frequent suspend/resume procedures, then the wireless device can maintain up-to-date RNA information, but signaling overhead increases and bandwidth is wasted
Solution Approach 1:
The patent extracts only the essential RNA configuration information from the full TAI list and transmits it separately during suspend/resume procedures, while the complete TAI list remains stored in the NAS layer. This extraction approach allows the device to update RNA information efficiently without transmitting redundant data, thereby reducing signaling overhead while maintaining information freshness.
Solution Approach 2:
The complete TAI list is pre-configured and stored in the NAS layer before suspend/resume procedures occur. This preliminary action ensures that when suspend/resume procedures happen frequently, the device already has the necessary RNA configuration information available locally, eliminating the need for repeated full TAI list transmissions and reducing signaling overhead.
2Ease of manufacture
If full TAI list is transmitted during each suspend/resume procedure, then RNA configuration is complete, but signaling bandwidth is wasted due to redundancy
Solution Approach 1:
The patent segments the RNA configuration information into two parts: the complete TAI list stored in the NAS layer and the essential RNA configuration transmitted during suspend/resume procedures. This segmentation allows the system to maintain complete RNA configuration information while transmitting only the necessary portion, thereby reducing signaling data volume without compromising configuration completeness.
3Ease of operation
If RNA configuration is signaled using traditional methods, then all necessary information is provided, but the number of bits required for signaling is excessive
Solution Approach 1:
The patent uses the TAI list already stored in the NAS layer as a reference copy, and during suspend/resume procedures, only transmits RNA configuration information that points to or references this existing copy. This copying approach eliminates the need to transmit the full TAI list again, significantly reducing the number of bits required for signaling while maintaining information completeness through reference to the stored copy.
Data Source
AI summary
Embodiments described herein provide methods and apparatus for determining a radio access network notification area, RNA, in a wireless communications network. A method in a wireless device comprises receiving an indication of the RNA, wherein the indication comprises a public land mobile network code, PLMN associated with a plurality of tracking area codes, TACs; and determining based on the RNA indication, a plurality of tracking area identifiers comprising each of the plurality of TACs and their associated PLMN.