Multi-SIM UE Gap Adjustment for Baseband Conflict and Paging Reliability
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Solution Overview
Problem
Existing methods for data transmission in multi-card UEs result in network resource wastage and degraded performance due to mismatched transmission time gaps, leading to paging failures and inefficient use of communication basebands.
Innovation Solution
A method for data transmission in multi-card UEs that involves determining wireless operation demands and requesting transmission time gaps, with the ability to generate and send gap adjustment requests to adjust allocated time gaps based on actual operations, using physical layer or MAC CE resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE requests a transmission time gap (GAP) from the base station to ensure wireless operation of SIM2, then the data transmission performance is improved, but the network resources are wasted due to mismatch between applied GAP and actual operation time
Solution Approach 1:
The patent implements a feedback mechanism where the UE monitors the actual execution of wireless operations during the GAP period and sends feedback information to the base station. This feedback includes whether the wireless operation was successfully completed and the actual time consumed. Based on this feedback, the base station dynamically adjusts the GAP allocation for future operations, ensuring that the allocated time matches the actual needs, thereby reducing network resource waste while maintaining reliable data transmission.
Solution Approach 2:
The patent transforms the static GAP allocation mechanism into a dynamic one. Instead of allocating fixed GAP periods based on estimates, the system now adapts GAP allocation based on real-time operation outcomes. The base station modifies the GAP duration and timing in subsequent allocations according to the feedback received from previous operations, making the resource allocation flexible and responsive to actual operational requirements.
2Adaptability or versatility
If the UE sends uplink data buffer information in advance to inform the base station of no uplink data, then the baseband and RF can be released for other card operations, but the data transmission smoothness is affected and transmission efficiency is reduced
Solution Approach 1:
The patent applies preliminary action by having the UE send uplink data buffer information in advance before the actual data transmission is needed. This allows the base station to prepare the baseband and RF resources ahead of time, ensuring that when data needs to be transmitted, the resources are already allocated and ready, thus maintaining transmission efficiency while enabling flexible resource sharing between multiple SIM cards.
Solution Approach 2:
The patent ensures continuity of useful action by maintaining the uplink data buffer information reporting mechanism that keeps the base station informed of the UE's data status. This continuous information flow allows the base station to maintain optimal resource allocation and keep the data transmission pipeline ready, preventing interruptions and maintaining efficiency even as resources are dynamically shared between multiple SIM cards.
3Device complexity
If the UE discards signals for one card according to service priorities, then the communication baseband conflict is resolved, but paging failures occur and data transmission performance degrades
Solution Approach 1:
The patent introduces the transmission time gap (GAP) mechanism as an intermediary that mediates between multiple SIM cards competing for the same baseband and RF resources. Instead of discarding signals from lower-priority cards, the system schedules non-conflicting operations during designated GAP periods. This intermediary mechanism allows both SIM cards to maintain their signal processing capabilities while avoiding baseband conflicts, thereby preserving paging and data transmission reliability.
Solution Approach 2:
The patent segments the time domain into regular operation periods and GAP periods, during which different SIM cards can operate without conflict. By dividing the operational timeline into distinct segments, the system allows SIM1 to operate during normal periods while SIM2 performs wireless operations during allocated GAP periods. This temporal segmentation resolves baseband conflicts without requiring signal discarding, maintaining reliability for both cards.
Data Source
AI summary
A method for data transmission of a multi-card UE is provided. The multi-card UE has at least a first subscriber identity module (SIM) card and a second SIM card, the first SIM card is in a connected status with a network. The method includes: determining a wireless operation demand of the second SIM card, and requesting a transmission time gap from the network according to the wireless operation demand, for enabling the second SIM card to execute a wireless operation in the transmission time gap. The method further includes generating a gap adjustment request according to the wireless operation executed by the second SIM card, and sending the gap adjustment request to the network, for enabling the network to adjust allocated transmission time gap according to the gap adjustment request.