Multi-SIM UE Signal Quality Measurement Handling
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Solution Overview
Problem
Multi-SIM wireless user equipment (UE) faces challenges in processing signal quality measurement requests without disrupting ongoing calls, as existing technologies do not adequately manage simultaneous operations across multiple SIMs, potentially leading to call disruptions and inefficiencies in carrier aggregation and handover processes.
Innovation Solution
The UE processes measurement requests by checking if a call is ongoing on one SIM before responding to a request on another SIM, ensuring that no measurements or responses are sent during active calls, thereby preventing disruptions and optimizing resource usage by sharing a common transmit chain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE processes measurement requests on multiple SIMs simultaneously, then the productivity of signal quality assessment is improved, but call disruptions occur due to resource conflicts
Solution Approach 1:
The patent implements dynamic resource allocation where the UE dynamically determines which SIM can process measurement requests based on real-time call status. When a call is active on one SIM, the system dynamically blocks measurement processing for that SIM while allowing other SIMs to continue their measurements, thus adapting resource allocation to current operational conditions and preventing call disruptions
Solution Approach 2:
The patent segments the measurement processing function by SIM, allowing each SIM to be processed independently. The UE maintains separate tracking of call statuses for each SIM and applies selective processing rules to each SIM's measurement requests, enabling parallel processing where possible while preventing conflicts when calls are active
2Device complexity
If the UE shares a common transmit chain across multiple SIMs, then the device complexity is reduced, but measurement responses may disrupt ongoing calls
Solution Approach 1:
The patent applies preliminary action by checking the call status of each SIM before allowing measurement requests to be processed. The UE proactively determines whether a SIM can accept measurement responses based on whether a call is currently active, and prevents measurement processing when it would conflict with an ongoing call, thus avoiding disruptions before they occur
Solution Approach 2:
The patent introduces an intermediary control mechanism that mediates between measurement processing and call operations. This intermediary layer checks call status conditions and determines whether measurement responses should be processed, acting as a buffer that prevents direct conflicts between measurement activities and active calls while sharing the common transmit chain
Data Source
AI summary
Methods and apparatus for processing requests for signal quality measurement are provided herein. According to at least one aspect, a communication device, which has a plurality of subscriptions, maintains first state parameter information for one or more subscriptions of the plurality of subscriptions to indicate whether a call is ongoing for each subscription of the one or more subscriptions. The communication device receives, for a further subscription of the plurality of subscriptions, a request to measure a channel condition of one or more signals. The communication device responds to the request to measure the channel condition of the one or more signals based on a determination that the first state parameter information for the one or more subscriptions indicates no call is ongoing for each subscription of the one or more subscriptions.