Shared RF Chains for Higher-Throughput MSIM Reception
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Solution Overview
Problem
In multiple subscriber identification module (MSIM) operations, the limited number of radio frequency (RF) resources in user equipment (UE) leads to performance loss as available transmit and receive chains are split between subscriptions, resulting in reduced throughput for each subscription.
Innovation Solution
Implementing a shared set of RF resources, including transmit and receive chains, for transmitting and receiving RF signals corresponding to different subscriptions, allowing multiplexing of signals for improved throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate RF resources (transmit and receive chains) are allocated to each subscription in MSIM operations, then each subscription can operate independently, but the throughput for each subscription is reduced due to resource splitting
Solution Approach 1:
The patent merges the RF resource allocation by implementing a shared RF resource pool that serves multiple subscriptions simultaneously. Instead of allocating separate transmit and receive chains to each subscription, the system combines all RF resources into a shared pool that can be dynamically allocated to different subscriptions based on current communication needs, thereby maintaining independent operation capability while improving overall throughput.
Solution Approach 2:
The patent makes RF resources universal by designing transmit and receive chains that can serve multiple subscriptions rather than being dedicated to a single subscription. The shared RF resources can be flexibly assigned to different subscriptions depending on traffic demands, enabling the same physical resources to perform multiple functions for different logical connections simultaneously.
2Productivity
If a shared set of RF resources is implemented for multiple subscriptions, then throughput is improved and performance loss is reduced, but resource allocation complexity increases
Solution Approach 1:
The patent implements dynamic resource allocation where the shared RF resources are flexibly assigned to different subscriptions based on real-time communication demands. The system can dynamically adjust which subscription uses which RF chain at any given time, optimizing throughput while managing complexity through adaptive rather than static allocation schemes.
Solution Approach 2:
The patent changes the allocation parameter from fixed (dedicated resources per subscription) to variable (shared resources dynamically assigned). By introducing flexible parameter control in resource allocation, the system can optimize throughput performance while managing complexity through programmable resource management rather than hardwired dedicated connections.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for using shared radio frequency resources for multiple subscriber identification module transmission and reception. An example method includes receiving, using a shared set of receive (RX) chains, a plurality of radio frequency (RF) signals in a set of time-frequency resources, wherein the plurality of RF signals include: first RF signals corresponding to first subscription of the UE, and second RF signals corresponding to a second subscription of the UE: processing the first RF signals using a first baseband processor of the UE associated with the first subscription; and processing the second RF signals using a second baseband processor of the UE associated with the second subscription.