Dual-SIM Signal Timing for Simultaneous Uplink and Downlink
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Solution Overview
Problem
Existing mobile phones with dual-card dual-standby capability do not support simultaneous uplink sending and downlink receiving (dual-active) due to resource sharing and allocation challenges between two communication cards.
Innovation Solution
A terminal device receives configuration information from a first base station to determine a time domain position, allowing it to receive signals from a second base station at that position, enabling simultaneous communication through both cards using autonomous gaps, gap patterns, or time-division multiplexing patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dual-card dual-standby is implemented, then resource sharing between communication cards is enabled, but simultaneous uplink sending and downlink receiving (dual-active) cannot be supported
Solution Approach 1:
The patent implements dynamic time domain resource allocation by configuring different time domain patterns (autonomous gaps, gap patterns, TDM patterns) that can be adjusted based on service requirements. The terminal device dynamically switches between different resource allocation modes to achieve dual-active functionality while managing resource sharing complexity through adaptive configuration rather than static resource division.
2Reliability
If autonomous gaps are configured for one communication card, then signal reception is enabled, but resource allocation for simultaneous transmission on another card becomes challenging
Solution Approach 1:
The patent employs periodic time domain patterns including autonomous gaps, gap patterns, and TDM patterns that create regular intervals for signal reception and transmission. These periodic configurations allow the terminal device to alternately switch between receiving signals on one card and transmitting on another card in a structured manner, ensuring both reception reliability and transmission efficiency through time-division multiplexing.
Data Source
AI summary
Provided are a signal transmission method and apparatus, and a terminal device. The method includes that: a terminal device receives first configuration information from a first base station, the first configuration information being configured for determining a first time domain position, the first base station being a base station corresponding to a first communication card in the terminal device, and the first communication card being in a connected state; and the terminal device receives, at the first time domain position, a signal from a second base station, the second base station being a base station corresponding to a second communication card in the terminal device.