Paging Signal Beam Scanning Optimization
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Solution Overview
Problem
In wireless communication systems, particularly with the advent of 5G technology, existing methods for sending paging signals to terminals in managed cells using beam scanning are inefficient, leading to prolonged scanning times and increased delays in signal receipt.
Innovation Solution
The method involves dividing the target cell into multiple scanning areas and selecting corresponding beam scanning nodes to perform parallel beam scanning, determining scanning start points based on terminal delay capabilities and locations, and adjusting scanning directions to prioritize low-delay terminals, thereby optimizing the beam scanning process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam scanning is performed on the entire cell by a single beam scanning node, then the paging signal can be sent to all terminals in the cell, but the scanning time is prolonged and the delay in signal receipt is increased
Solution Approach 1:
The cell is divided into multiple scanning areas, each covered by a different beam scanning node. This segmentation allows parallel scanning operations across multiple areas simultaneously, reducing the total scanning time while ensuring complete coverage of the cell for reliable paging signal delivery.
Solution Approach 2:
Multiple beam scanning nodes are coordinated to work together, each handling a specific scanning area. Their scanning operations are merged in time through parallel execution, achieving both complete cell coverage and reduced scanning delay.
2Reliability
If the beam scanning node scans the entire cell sequentially, then all terminals can receive the paging signal, but the time required for beam scanning is increased
Solution Approach 1:
The cell coverage area is segmented into multiple scanning areas assigned to different beam scanning nodes. This enables concurrent scanning operations across all areas, dramatically improving scanning efficiency while maintaining complete signal receipt coverage for all terminals.
Solution Approach 2:
The scanning process transitions from a single-node sequential approach to a multi-node parallel approach, adding the dimension of spatial distribution. Multiple nodes scan different areas simultaneously, transforming the time-consuming sequential process into an efficient parallel operation.
3Device complexity
If beam scanning is performed without considering terminal locations and delay capabilities, then the scanning process is simple, but the delay experienced by terminals in receiving signals is increased
Solution Approach 1:
The base station performs preliminary actions by determining terminal locations and delay capabilities before initiating beam scanning. Based on this advance information, it selects appropriate beam scanning nodes and configures scanning areas to prioritize low-delay terminals, thereby reducing their signal reception delay without significantly increasing overall system complexity.
Data Source
AI summary
A paging method includes: determining a paging signal to be sent currently for a target cell, wherein the paging signal carries identifiers of terminals to be paged in the target cell, the target cell comprises n scanning areas corresponding to n beam scanning nodes respectively, the n beam scanning nodes are selected by a base station from m beam scanning nodes set for the target cell, the target cell is a cell, to which the paging signal is to be sent; determining a scanning start point of each of the corresponding scanning areas on which the beam scanning is performed by the n beam scanning nodes respectively; and performing beam scanning on the corresponding scanning areas by the n beam scanning nodes respectively so as to send the paging signal to the terminals in the corresponding scanning areas by beam scanning.