Storing Semi-Static UE Capabilities in Core Network
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Solution Overview
Problem
In wireless communication systems, the frequent transmission of user equipment (UE) capabilities during state transitions increases signaling load and slows down the transition process, as conventional methods require re-transmitting semi-static capabilities every time the UE enters or leaves an active state, even if they have not changed.
Innovation Solution
The method involves storing semi-static capabilities in the core network upon initial connection and only transmitting dynamic capabilities when returning to an active state from an idle state, unless semi-static capabilities have changed, thereby reducing redundant signaling and improving transition speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If semi-static capabilities are re-transmitted every time the UE enters or leaves an active state, then the network has complete and up-to-date capability information, but the signaling load increases and transition time increases
Solution Approach 1:
The network stores semi-static capabilities in a database during initial connection, performing the capability information provision in advance. When the UE transitions states, the network retrieves pre-stored capabilities instead of requiring re-transmission, thus reducing transition time while maintaining information completeness
Solution Approach 2:
The patent creates a copy of semi-static capabilities and stores it in the network database. This copy can be reused for multiple state transitions without requiring the UE to re-transmit the original capability information, reducing signaling overhead while maintaining information availability
2Reliability
If semi-static capabilities are re-transmitted every time the UE enters or leaves an active state, then the network ensures up-to-date capability information, but the signaling load increases
Solution Approach 1:
The patent extracts semi-static capabilities from the repeated signaling exchange and stores them separately in the network database. Only dynamic capabilities continue to be transmitted during state transitions, separating the static information management from the dynamic signaling process and reducing overall signaling load
Solution Approach 2:
The network performs preliminary storage of semi-static capabilities in its database during initial connection. This advance preparation eliminates the need for repeated transmission of the same capability information during subsequent state transitions, significantly reducing signaling load
Data Source
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AI summary
A method and apparatus for a wireless communication system, sends an initial connection request with the device capabilities of an indicated mobile stati (505). The device capabilities comprise both semi-static capabilities (535b) and dynamic capabilities (535a). The semi-static capabilities (550) are stor in the core network (525). Data is transmitted via a wireless node (515) before the mobile station transitions to an idle state. When transitioning back to an active state from the idle state when the semi-static capabilitie have not changed, a connection request (540) is sent with the dynamic capabilities of the user equipment without also transmitting the semi-static mobile station capabilities to the wireless node (515).