Multi-USIM UE Paging Optimization via HEED Cause Filtering
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Solution Overview
Problem
Current multi-USIM UE implementations are inefficient as they are forced to process paging requests from different PLMNs, even if the UE is actively operating on a different network, leading to suboptimal network performance and user experience.
Innovation Solution
The introduction of a new 'HEED' paging cause message that allows the UE to determine whether it can ignore a paging request from a different PLMN, optimizing system performance by preventing unnecessary interactions and resource wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE is forced to process all paging requests from different PLMNs, then the network coverage and service availability are improved, but the device complexity and energy consumption increase
Solution Approach 1:
The paging cause is segmented into distinct categories (information element) that allow the UE to quickly identify and filter relevant paging requests. By dividing the paging message structure to include a specific cause indicator, the UE can segment its processing to only handle paging requests that match its current operational state, rather than processing all paging requests uniformly.
Solution Approach 2:
The UE dynamically adjusts its paging processing behavior based on its current network state and the paging cause information. The device can switch between different processing modes - fully processing paging requests when active on a PLMN, or selectively ignoring them when idle - making the system adaptable to different operational conditions rather than following a static processing rule.
2Reliability
If the UE processes all paging requests regardless of current network state, then the service reliability is improved, but the energy consumption and processing overhead increase
Solution Approach 1:
The critical decision-making element (paging cause information) is extracted from the general paging message structure. By taking out this specific indicator and placing it prominently in the paging message, the UE can extract only the necessary information to make a go/no-go decision about processing the paging request, avoiding the energy-intensive process of fully decoding and processing irrelevant paging messages.
Solution Approach 2:
The UE performs partial processing of paging requests by first checking the paging cause indicator before committing to full processing. This allows the device to take a minimal action (checking the cause) for all paging requests, and only take excessive action (full processing) when the paging cause indicates relevance, thereby reducing overall energy consumption while maintaining reliability for important communications.
3Adaptability or versatility
If the UE services all paging requests from different PLMNs, then the network interoperability is improved, but the system performance and resource efficiency deteriorate
Solution Approach 1:
The paging cause information is prepared and included in the paging message before the UE receives it. This preliminary action allows the UE to make informed decisions about processing paging requests without having to engage in lengthy negotiation or trial-and-error processes, thereby improving system performance by reducing unnecessary processing of incompatible paging requests while maintaining interoperability through standardized cause indicators.
Data Source
AI summary
A method of an User Equipment (UE) is provided. The method may include receiving a paging request from a second network when the UE is active on a first network; determining if the received paging request includes information indicating the UE to service the received paging request; and servicing received the paging request based on the information included in the paging request.