Cell Type Indication for High-Speed Railway Dedicated Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-speed railway dedicated networks often experience congestion due to non-train users accessing the network, affecting communication quality for mobile users on high-speed trains, as both networks share the same frequency resources and have different coverage areas.
Innovation Solution
A cell type indication method and apparatus that determines the type of cell (dedicated for high-speed railway or LTE public network) and sends a system message to terminals to enable them to access the appropriate network based on their conditions, using specific information elements or TACs within system information blocks like SIB1.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If high-speed railway dedicated networks and LTE public networks share the same frequency resources, then network coverage and resource utilization are improved, but network congestion and communication quality deterioration occur
Solution Approach 1:
The patent segments the network into two distinct types: high-speed railway dedicated network cells and LTE public network cells. Each cell type is clearly identified through specific information elements in system messages, allowing terminals to distinguish and select appropriate network types based on their service requirements, thereby preventing non-train users from accessing the dedicated network and reducing congestion.
Solution Approach 2:
The patent applies local quality by configuring different access parameters and information elements for different cell types. High-speed railway dedicated cells use specific information elements (e.g., hsRailwayNetId, hsRailwayTAC) while LTE public cells use standard LTE information elements. This localized differentiation ensures that each network type maintains its specific characteristics and service quality.
2Measurement precision
If system messages are enhanced with cell type indication information, then terminal access accuracy is improved, but message complexity and processing overhead increase
Solution Approach 1:
The patent extracts cell type indication information from the general system message structure and places it in dedicated information elements specific to high-speed railway cells. By separating the indication mechanism into distinct elements (such as hsRailwayNetId in SIB1 or hsRailwayTAC in other system blocks), the patent enables precise cell type identification without fundamentally altering the overall system message framework, thus balancing accuracy with complexity management.
Data Source
AI summary
A cell type indication method includes: a cell type of a first cell is determined, the cell type of the first cell including a cell providing dedicated network service for high-speed railway or a cell providing common public network service for Long-Term Evolution (LTE); a system message to be used to indicate the cell type of the first cell is determined; and the system message is sent to a terminal to enable the terminal to determine the cell type of the first cell according to the system message and, in response to determining to access the first cell according to the cell type of the first cell, initiate an access process to the first cell.