Multi-SIM RF Chain Operation Without Measurement Gaps
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Solution Overview
Problem
The increasing complexity of wireless communication devices strains battery life due to the need for improved signal accuracy and functionality, particularly in multi-subscriber identity module (MUSIM) operations, where simultaneous communication with multiple networks can lead to performance issues and inefficient power consumption.
Innovation Solution
Implementing methods for user equipment (UE) to communicate with multiple wireless networks using separate RF chains, allowing for network-controlled short gaps (NCSG) or no measurement gaps, enabling simultaneous communication with both networks during specific interruption periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multi-SIM operation is implemented to enable communication with multiple wireless networks, then communication versatility is improved, but power consumption increases
Solution Approach 1:
The patent segments the RF chain into separate components: a first RF chain dedicated to the first wireless network and a second RF chain dedicated to the second wireless network. This segmentation allows independent operation of each RF chain, enabling the device to communicate with multiple networks simultaneously without requiring the entire RF chain to switch between networks, thereby reducing power consumption while maintaining communication versatility.
Solution Approach 2:
The patent introduces a temporal dimension by implementing network-controlled short gaps (NCSG) where the UE can selectively communicate with different networks during different time portions of the VIRP. This allows the device to optimize power consumption by sleeping during portions when not communicating while maintaining the ability to communicate with multiple networks, effectively adding a time-based dimension to the RF chain operation.
2Adaptability or versatility
If measurement gaps are introduced to enable communication with second network, then communication capability is improved, but communication interruption increases
Solution Approach 1:
The patent implements dynamic control of the measurement gaps through network-controlled short gaps (NCSG), where the network dynamically adjusts the gap timing and duration based on real-time communication needs. This allows the system to minimize communication interruptions by only creating gaps when necessary for network switching, rather than using fixed, prolonged measurement gaps, thereby improving communication capability while reducing time loss.
Solution Approach 2:
The patent changes the parameters of the measurement gap configuration by introducing network-controlled short gaps with variable timing and duration. Instead of using fixed measurement gaps, the system adjusts the gap parameters dynamically based on the specific network conditions and communication requirements, reducing the overall interruption time while maintaining the ability to switch between networks.
3Device complexity
If single RF chain is used for both networks, then device complexity is reduced, but signal accuracy deteriorates
Solution Approach 1:
The patent segments the RF chain into separate first and second RF chains, each dedicated to a specific wireless network. This segmentation improves signal accuracy by eliminating interference between networks while the baseband processor remains shared, maintaining acceptable device complexity. The separation of RF chains allows independent signal processing for each network, ensuring accurate signal reception and transmission.
Solution Approach 2:
The patent applies universality by making the baseband processor and other processing components multi-functional, capable of handling both first and second wireless networks. This approach maintains device complexity at acceptable levels by sharing common processing resources while introducing separate RF chains only where necessary for signal accuracy, achieving a balance between complexity reduction and signal quality improvement.
Data Source
AI summary
This disclosure relates to techniques for performing multi-subscriber identity module operation in a wireless communication system. A wireless device may be able to simultaneously communicate with two different networks using two different radio frequency chains. The wireless device may indicate this capability to a first wireless network. The first wireless network may select a configuration for the wireless device to use for operations with respect to a second network. The wireless device may communicate with the two networks using the different chains, using the configuration, if applicable.