Cell Selection Early Termination for Reduced Latency
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Solution Overview
Problem
In the process of cell selection and reselection by user equipment (UE), existing technologies waste time and battery power by reading and processing all system information blocks (SIBs) from target cells, even if the UE determines early on that the cell is unsuitable for camping, leading to inefficient cell selection and potential delays in network operations.
Innovation Solution
The UE initiates a cell selection process with a target cell, reads the first system information block, and terminates the process if it determines the cell is unsuitable, thereby avoiding the unnecessary reading and processing of subsequent SIBs, allowing for faster cell selection and reselection by focusing on suitable cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE reads and processes all system information blocks from target cells, then complete cell information is obtained, but time and battery power are wasted
Solution Approach 1:
The patent applies preliminary action by checking cell suitability criteria before reading all system information blocks. The UE evaluates basic cell suitability parameters first, and only if the cell passes this preliminary check does it proceed to read complete system information blocks. This prevents wasting time on obviously unsuitable cells while ensuring reliable cell selection for viable candidates.
Solution Approach 2:
The patent segments the cell selection process into distinct stages: initial cell identification, suitability criterion checking, and detailed system information reading. By dividing the process into segments, the UE can terminate early when criteria are not met, avoiding the need to read all information blocks from every detected cell, thus reducing time loss while maintaining selection reliability.
2Reliability
If the UE reads and processes all system information blocks from target cells, then complete cell information is obtained, but battery power is consumed
Solution Approach 1:
The patent applies preliminary action by performing initial cell suitability assessments before consuming significant battery power reading all system information blocks. The UE checks basic criteria such as cell access restrictions and minimum signal quality thresholds first, eliminating unsuitable cells early in the process and preserving battery power for processing only promising candidates.
Solution Approach 2:
The patent segments the information reading process into optional stages based on cell suitability. The UE reads only essential information blocks for cells that pass initial criteria, and can skip reading less critical system information blocks for cells that fail suitability checks, thereby reducing overall battery power consumption while maintaining reliable cell selection.
3Loss of time
If the UE terminates the cell selection process early, then time and power are saved, but complete cell information may be insufficient
Solution Approach 1:
The patent applies preliminary action by establishing and checking cell suitability criteria that determine whether complete system information is necessary. The UE reads basic cell identification and access criteria first, and only terminates early when these preliminary checks definitively indicate the cell is unsuitable, ensuring that sufficient information is gathered before making termination decisions.
Solution Approach 2:
The patent applies dynamics by making the information reading process adaptive based on cell suitability assessments. The UE dynamically adjusts the extent of information reading - reading complete system information blocks only for cells that pass suitability criteria, and reading minimal information or terminating early for cells that fail criteria, thus balancing information completeness with time efficiency.
Data Source
AI summary
Described herein are methods performed by user equipment (“UE”) for carrier aggregation deployment and organization in unlicensed bands. The method includes initiating a cell selection process with a target cell, wherein the target cell sends a plurality of information blocks, receiving a first information block, prior to reading a second information block, determining whether the target cell is suitable for the UE to camp on based on the first information block, and terminating the cell selection process when the target cell is determined to be unsuitable for camping based on the first information block. The terminating may include comparing data from the first information block to data stored in a database. The method further includes determining whether the UE is in a stationary state or is in a state of motion, and using this information to improve cell selection delay on target cell.