Single Receiver Chain for Dual-SIM Dual-Transport
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Solution Overview
Problem
Existing radio communication devices face challenges in managing dual-SIM dual-transport scenarios, where both SIMs require active connections on different networks, especially when implementing HSPA extensions, which demand additional receiver resources, leading to conflicts and increased hardware and power consumption.
Innovation Solution
The implementation of a radio communication device with a mode switching circuit that allows operation in multiple modes, including independent processing of data from each SIM and joint processing for HSPA extensions, using a single set of receivers, and a control unit to manage priority and resource allocation between SIMs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two separate receiver chains are implemented for Dual-SIM Dual-Transport (DSDT), then both SIMs can maintain active connections on different networks in parallel, but hardware complexity and power consumption increase
Solution Approach 1:
The patent merges the functionality of two separate receiver chains into a single receiver chain that can dynamically support both DSDT and HSDPA extensions. The single receiver chain is configured to process multiple communication channels through time-division multiplexing and flexible resource allocation, eliminating the need for duplicate hardware while maintaining dual-SIM dual-transport capability
Solution Approach 2:
The single receiver chain is designed with universal functionality to handle both DSDT operations and HSDPA extensions. By implementing a mode switching circuit and flexible channel processing architecture, the receiver can adaptively serve multiple purposes: processing control channels for both SIMs simultaneously, handling data channels for HSDPA, and supporting voice calls on either network, thereby replacing specialized dual-receiver hardware with a multi-functional single receiver
2Adaptability or versatility
If two separate receiver chains are implemented for HSDPA extensions, then dual-band HSDPA and 4-carrier HSDPA can be facilitated, but hardware requirements and cost increase
Solution Approach 1:
The patent implements a dynamic receiver configuration where a single receiver chain can adaptively switch between different operational modes required for HSDPA extensions. The mode switching circuit enables the receiver to dynamically allocate resources for dual-band operation, 4-carrier aggregation, and voice call handling based on current network conditions and service requirements, replacing static dual-receiver hardware with a dynamic single-receiver system
Solution Approach 2:
The receiver chain is segmented into independent processing blocks that can be selectively activated for different HSDPA extension scenarios. Control channel processing, data channel processing, and voice call processing are separated into distinct functional units within the single receiver, allowing flexible combination and allocation of these segments to support various HSDPA modes without requiring complete duplicate hardware sets
3Adaptability or versatility
If both DSDT and HSDPA extensions run in parallel requesting two receivers, then full functionality is maintained, but resource conflicts occur and power consumption increases
Solution Approach 1:
The patent implements periodic time-division multiplexing within the single receiver chain to handle parallel DSDT and HSDPA extension requirements. The receiver periodically switches between processing control channels for both SIMs, processing data channels for HSDPA, and handling voice calls, with carefully designed timing that ensures no functionality is lost while keeping the receiver active but reducing overall power consumption compared to continuously operating two separate receivers
Solution Approach 2:
The receiver chain utilizes parameter changes in its operational mode to efficiently handle parallel DSDT and HSDPA extension functions. By dynamically adjusting processing parameters such as channel allocation, timing synchronization, and resource priority based on current operational requirements, the single receiver can seamlessly transition between different functional states, maintaining full parallel operation capability while optimizing power consumption through intelligent parameter management rather than hardware duplication
Data Source
AI summary
Methods and devices including a first receiver configured to demodulate a first down-converted signal; a second receiver configured to demodulate a second down-converted signal; and a controller configured to alternate between a first receive configuration, in which the first down-converted signal and the second down-converted signal are both received from a first radio network, and a second receive configuration, in which the first down-converted signal is received from the first radio network and the second down-converted signal is received from a second radio network.