Dynamic Random Access Mode Switching for Signal Reliability
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Solution Overview
Problem
In mobile communication networks, especially for machine-type communication devices, the reliability of signal transmission is poor due to large path transmission losses, and existing technologies use a fixed signal transmission mode without adapting to varying conditions, leading to inefficient communication.
Innovation Solution
A method and apparatus for user equipment that dynamically switch between single and enhancement signal transmission modes based on preset conditions, such as power ramping factors and previous access attempt failures, to improve signal reliability by selecting appropriate enhancement levels and resource availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed signal transmission mode is used, then device complexity is reduced, but signal transmission reliability deteriorates due to large path transmission losses
Solution Approach 1:
The patent implements dynamic switching between single transmission mode and enhancement mode based on random access attempt outcomes. The terminal determines whether to switch modes by evaluating preset conditions (such as whether the attempt count exceeds a threshold or whether previous attempts failed), enabling the system to adapt transmission reliability to actual communication conditions rather than using a fixed mode.
Solution Approach 2:
The patent changes the transmission mode parameter dynamically based on random access attempt results. When preset conditions are met (e.g., attempt count threshold exceeded or previous failure), the system switches from single transmission mode to enhancement mode with repeated transmissions, thereby adjusting the transmission parameter to improve reliability under poor signal conditions.
2Reliability
If enhancement mode with repeated transmissions is always used, then signal transmission reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic mode selection that switches between single transmission mode and enhancement mode based on actual communication needs. By evaluating preset conditions (attempt count thresholds, previous failure status), the system only activates the power-intensive enhancement mode when necessary, thereby improving reliability selectively without continuously consuming excessive power.
Solution Approach 2:
The patent dynamically changes the transmission mode parameter based on random access outcomes. When conditions are favorable, single transmission mode is used to conserve power; when conditions deteriorate (exceeded attempts, previous failures), the system switches to enhancement mode with repeated transmissions to ensure reliability, thus optimizing the balance between power consumption and transmission reliability.
3Use of energy by moving object
If single transmission mode is used, then power consumption is reduced, but signal transmission reliability deteriorates in high loss environments
Solution Approach 1:
The patent implements dynamic mode switching that starts with single transmission mode (low power) and transitions to enhancement mode (high reliability) when preset conditions are met. The system monitors random access attempt outcomes and switches modes based on whether attempt counts exceed thresholds or previous attempts failed, thereby adapting power consumption and reliability to actual communication conditions.
Solution Approach 2:
The patent dynamically changes the transmission mode parameter from single transmission to enhancement mode based on random access performance. When conditions indicate poor reliability (exceeded attempts, previous failures), the system switches to repeated transmissions to compensate for high path loss, thus dynamically adjusting the reliability parameter while managing power consumption appropriately.
4Adaptability or versatility
If dynamic mode switching is implemented, then adaptability to varying conditions is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic mode switching based on random access attempt outcomes. The terminal evaluates preset conditions (attempt count thresholds, previous failure status) to determine whether to switch between single transmission mode and enhancement mode, thereby achieving adaptability to varying channel conditions through relatively simple conditional logic rather than complex decision-making systems.
Data Source
AI summary
A method includes determining whether a first preset condition is met, where the first preset condition includes: a difference between a maximum transmit power allowed by the user equipment and a power of sending the random access code in a previous random access attempt process is less than or equal to a power ramping factor, and/or, the previous random access attempt process fails. The method also includes, if the first preset condition is met, sending the random access code using an enhancement mode in the current random access attempt process.