Multi-Antenna Switching for Simultaneous Voice and Data LTE
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Solution Overview
Problem
Electronic devices supporting multi-mode communication in a single radio environment are unable to simultaneously transmit or receive signals through multiple communication systems, leading to reduced availability of LTE communication systems, especially when providing voice services using Circuit Switched Fallback (CSFB) schemes, which limits their ability to offer concurrent data services over LTE.
Innovation Solution
The device employs a configuration with distinct antennas for voice and data services, utilizing switches to connect modems with antennas accordingly, allowing simultaneous voice and data services in a multi-radio environment, preventing call drops during voice communication by isolating data modems from voice operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the electronic device uses a single radio environment with multi-mode communication, then the device complexity is reduced, but the ability to simultaneously transmit or receive signals through multiple communication systems is lost
Solution Approach 1:
The single radio environment is segmented into multiple independent radio environments, each dedicated to specific communication systems (e.g., one for LTE data, another for CS voice). This segmentation allows simultaneous operation of multiple communication systems without interference, resolving the contradiction between reduced complexity and lost versatility.
2Reliability
If the electronic device operates in CSFB scheme for voice service, then voice service is supported, but data service availability through LTE system is reduced
Solution Approach 1:
The communication resources are segmented into separate radio environments: one dedicated to LTE data service and another to CS voice service. This allows both services to operate simultaneously without resource contention, maintaining voice service reliability while preserving data service availability through LTE.
Solution Approach 2:
A dual radio environment architecture acts as an intermediary layer between the LTE system and CS network, enabling simultaneous access to both voice and data services without forcing the device into exclusive CSFB mode.
3Ease of operation
If the electronic device provides voice service through SC network, then voice communication is enabled, but simultaneous data service through LTE system cannot be provided
Solution Approach 1:
The device maintains separate radio environments for different communication systems, allowing the voice module to operate on SC network while the data module simultaneously accesses LTE system, enabling concurrent services without operational conflicts.
Data Source
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AI summary
An apparatus and method for providing an LTE service in an electronic device. The method includes: transmitting or receiving a voice signal through a first antenna and a data signal through a second antenna when the electronic device provides a multi-communication service. At least one switch connects at least one antenna and at least one communication interface with each other. When the electronic device provides a single communication service, transmitting or receiving a data signal or a voice signal through the first antenna, using the at least one switch.