Multi-SIM UE Feature Exchange via State Indication
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Solution Overview
Problem
In mobile communication technologies, user equipment (UE) that support multiple subscriber identity modules (SIMs) face resource wastage during negotiations with network devices due to the need to report and negotiate numerous features, which is inefficient.
Innovation Solution
A method where the UE sends first indication information to determine its multi-subscriber identity module state and receives second indication information from network devices regarding supported features, reducing the need for extensive feature negotiations by only reporting the necessary information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE reports all multi-subscriber identity module features supported by the UE to the network device, then the network device can ensure service reliability through capability negotiation, but the resource consumption increases due to extensive feature negotiation
Solution Approach 1:
The patent extracts only the essential information needed for service reliability - specifically whether the UE is currently in a multi-subscriber identity module state - and removes the unnecessary extensive feature negotiation process. The UE sends first indication information indicating only the current multi-SIM state, and receives second indication information with the features supported by the network device, thereby ensuring service reliability while minimizing resource consumption.
2Measurement precision
If the UE sends detailed multi-subscriber identity module feature information to the network device, then the network device can accurately determine supported features, but the message length and processing overhead increase
Solution Approach 1:
The patent extracts only the critical state information (whether UE is in multi-subscriber identity module state) from the complete feature set, and transmits this condensed information to the network device. The network device then provides the second indication information containing the features it supports, achieving accurate feature determination with minimal message overhead.
3Adaptability or versatility
If the UE negotiates all multi-subscriber identity module features with the network device, then complete feature compatibility is achieved, but the negotiation time and signaling overhead increase
Solution Approach 1:
The patent applies preliminary action by having the UE send first indication information about its current multi-SIM state before detailed feature negotiation. The network device uses this information to prepare and send back second indication information containing the features it supports, enabling the UE to quickly determine compatible features without extensive back-and-forth negotiation, thus reducing negotiation time while maintaining adaptability.
Data Source
AI summary
A method for exchanging multi-subscriber identity module feature information is performed by user equipment (UE). The method includes: sending first indication information to an access network device, wherein the first indication information is configured to determine whether the UE is currently in a multi-subscriber identity module state; and receiving second indication information sent by the access network device, wherein the second indication information is configured to indicate multi-subscriber identity module feature information supported by at least one of a core network device or the access network device.