Wireless Terminal Synchronization Using Stored Beam Parameters
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Solution Overview
Problem
The challenge is to reduce power consumption in terminals during the synchronization procedure in 5G wireless communication systems, where the terminal needs to return from a low power mode to establish communication.
Innovation Solution
The solution involves utilizing previous synchronization information stored by the terminal before entering low power mode, which includes parameters such as subcarrier spacing, beam transmission period, and carrier frequency error, to streamline the synchronization process, including beam search, frequency synchronization, and time synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal performs a full synchronization procedure upon returning from low power mode, then synchronization reliability is improved, but power consumption increases and time delay occurs
Solution Approach 1:
The terminal performs a partial synchronization procedure using previously stored synchronization information (such as timing advance values, frequency offset estimates, and beam configuration data) before fully returning from low power mode. This preliminary action maintains sufficient synchronization reliability while minimizing power consumption and time delay by avoiding complete re-synchronization.
2Reliability
If the terminal performs a full synchronization procedure upon returning from low power mode, then synchronization reliability is improved, but time delay increases
Solution Approach 1:
The terminal maintains and utilizes previously acquired synchronization information (timing advance, frequency offset, beam configurations) to perform a rapid partial synchronization upon returning from low power mode. This preliminary action significantly reduces synchronization time while maintaining reliability by avoiding complete re-synchronization procedures.
Solution Approach 2:
The terminal selectively updates only specific synchronization parameters that have expired or changed (such as timing advance or beam configuration) while retaining valid parameters from previous synchronization. This local quality approach minimizes the scope of re-synchronization, reducing time delay while maintaining overall synchronization reliability.
3Measurement precision
If the terminal activates the RF module frequently for synchronization, then synchronization accuracy is improved, but power consumption increases
Solution Approach 1:
The terminal performs a partial synchronization procedure using previously stored synchronization information before fully activating the RF module. This preliminary action maintains sufficient synchronization accuracy while minimizing power consumption by reducing the frequency and duration of RF module activation.
Solution Approach 2:
The terminal performs only the necessary partial synchronization procedures using stored information rather than complete re-synchronization. This partial action approach maintains adequate synchronization accuracy while significantly reducing power consumption by avoiding excessive RF module activation.
Data Source
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AI summary
The present disclosure relates to a communication technique that fuses, with loT technology, a 5G communication system for supporting higher data transmission rates than 4G systems, and a system thereof. The present disclosure can be applied to intelligent services (such as smart home, smart building, smart city, smart car, or connected car, health care, digital education, retail business, security and safety-related services, etc.) on the basis of 5G communication technology and loT-related technology. The present disclosure relates to a method and an apparatus for reporting information on beam failure when a beam is measured and reported.