Mobile Device Cell Information Derivation via Synchronization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current mobile communication technologies face challenges in reducing search times for mobile devices to find suitable radio cells, particularly in high traffic density environments, as they struggle to efficiently acquire and process synchronization and system information blocks in wireless communication standards like LTE.
Innovation Solution
The method involves deriving cell information by receiving and processing sequences of radio frames, specifically by determining the positions of Master Information Blocks (MIB) and System Information Blocks (SIBs) within these frames, using synchronization information and system frame numbers to reduce search times and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mobile devices scan all frequencies to find suitable radio cells, then reliability of cell selection is improved, but search time increases
Solution Approach 1:
The patent applies preliminary action by having the network pre-configure and indicate a subset of frequencies that are likely to contain suitable radio cells. The mobile device uses this pre-indicated frequency information to prioritize its search, rather than scanning all frequencies from scratch. This reduces search time while maintaining reliable cell selection by focusing on pre-identified promising frequencies.
2Loss of information
If mobile devices process all system information blocks, then completeness of cell information is improved, but power consumption increases
Solution Approach 1:
The patent applies the extraction principle by enabling mobile devices to selectively process only the specific system information blocks that are relevant to their current needs (such as SIB1 for cell selection). Instead of processing all system information blocks broadcast by the network, the device extracts and processes only the necessary information, thereby reducing power consumption while maintaining information completeness for the intended purpose.
3Productivity
If mobile devices scan all frequencies to exclude unnecessary ones, then efficiency of frequency exclusion is improved, but search time increases
Solution Approach 1:
The patent applies preliminary action by having the network pre-indicate which frequencies are suitable for service. The mobile device uses this advance information to immediately exclude frequencies that are not indicated, without needing to perform exhaustive scanning and analysis of all frequencies. This significantly improves frequency exclusion efficiency while reducing the time required.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
This disclosure relates to a method for deriving cell information of a radio cell by a mobile device, the method comprising: receiving a sequence of radio frames, wherein each radio frame comprises a master information block (MIB); deriving synchronization information of the sequence of radio frames from the MIBs of at least two radio frames; determining a position of a first type system information block (SIB1) comprised in the sequence of radio frames based on the synchronization information; determining a position of a second type system information block (SIB2) comprised in the sequence of radio frames based on information comprised in the SIB1; and deriving the cell information based on at least one of the SIB1 and the SIB2.