Dual-SIM RF Path Allocation for TDD Channel Estimation
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Solution Overview
Problem
Electronic devices with multiple SIMs face communication limitations and inefficiencies due to shared radio resources, leading to impaired channel state estimation and increased retransmissions when using TDD systems.
Innovation Solution
A processor in the electronic device allocates transmission and reception radio resources based on priority, allowing simultaneous communication with multiple networks by prioritizing one network over another, and transmitting reference signals without feedback during non-usage of transmission resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the electronic device shares a radio resource (RF path) for wireless communication based on multiple subscriber identity modules, then the device can reduce device complexity and save resources, but wireless communication based on multiple subscriber identity modules is limited at the same time
Solution Approach 1:
The patent segments the shared radio resource into separate transmission and reception RF paths. The transmission RF path is dedicated to one subscriber identity module while the reception RF path is dedicated to another subscriber identity module, allowing simultaneous bidirectional communication without mutual limitation.
Solution Approach 2:
The patent transitions from sharing a single RF path to utilizing both transmission and reception RF paths as separate dimensions. This dimensional separation enables independent operation of multiple subscriber identity modules simultaneously, resolving the limitation of shared resource access.
2Reliability
If the electronic device occupies a radio resource for wireless communication based on one subscriber identity module, then communication with that module is maintained, but wireless communication based on another subscriber identity module is limited
Solution Approach 1:
The patent segments the radio resource allocation by assigning different RF paths to different subscriber identity modules. Each module has dedicated transmission and reception paths, ensuring continuous communication capability for all modules simultaneously without occupation-based limitation.
Solution Approach 2:
The patent implements dynamic resource allocation where the processor can flexibly assign transmission and reception RF paths to different subscriber identity modules based on priority and communication needs, enabling adaptable multi-network connectivity while maintaining reliability.
3Measurement precision
If the base station uses uplink signal transmission for channel state estimation in TDD systems, then downlink communication can be optimized, but channel state estimation is impaired when multiple subscriber identity modules share radio resources
Solution Approach 1:
The patent segments the RF paths so that each subscriber identity module has dedicated transmission and reception paths. This segmentation enables the base station to receive uplink signals from each module independently without interference, improving channel state estimation accuracy for TDD system optimization.
Solution Approach 2:
The patent introduces separate transmission and reception RF paths as intermediaries between the subscriber identity modules and the base station. This intermediary structure enables clear signal transmission for channel state estimation while maintaining efficient communication, resolving the impairment caused by resource sharing.
4Productivity
If the electronic device transmits signals requiring feedback through shared radio resources, then communication can proceed, but unnecessary retransmissions occur due to limited resource access
Solution Approach 1:
The patent segments the radio resources into dedicated transmission and reception RF paths for each subscriber identity module. This segmentation eliminates resource contention and ensures that signals requiring feedback can be transmitted without causing unnecessary retransmissions, improving both throughput and reliability.
Data Source
AI summary
A device and/or a method for allocating radio resources in an electronic device. The electronic device may include: a plurality of SIMS and a processor, wherein the processor may be configured to: check the first priority of first communication with a first wireless network and the second priority of second communication with a second wireless network, wherein the first communication is based on first subscriber identification information and the second communication is based on second subscriber identification information; and allocate a transmission radio resource to the first communication and a reception radio resource to the second communication based on determining that a transmission radio resource is not being used in the second communication and the second priority being than the first priority.