Telecommunications System Information Indicator for Bandwidth Optimization
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Solution Overview
Problem
Current telecommunications systems face inefficiencies in transmitting system information on the broadcast channel (BCH), as all mobile terminals in a cell receive the same data, leading to excessive bandwidth usage and redundant information transmission, especially during cell reselection and handover processes.
Innovation Solution
The system information indicator is used to provide a reduced data set on the BCH, allowing each mobile terminal to receive tailored system information, enabling efficient access to the telecommunications system and optimizing radio resource usage by directing terminals to retrieve specific system information from a stored profile or updating it as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the same system information is transmitted to all mobile terminals on the BCH, then all terminals receive complete access information, but bandwidth consumption increases and network efficiency decreases
Solution Approach 1:
The patent extracts only the essential system information parameters needed for terminal access from the complete system information set. Instead of transmitting all system information to every terminal, the network extracts and transmits only the minimum necessary parameters (such as cell identity, access parameters, and basic system capabilities) on the BCH, thereby reducing bandwidth consumption while maintaining access reliability.
Solution Approach 2:
The patent implements differentiated system information transmission where different mobile terminals receive different sets of system information parameters based on their specific needs, terminal type, and service requirements. Rather than uniform transmission to all terminals, the system provides localized, tailored information sets, reducing overall bandwidth consumption while ensuring each terminal receives appropriate access information.
2Reliability
If complete system information is transmitted periodically on the BCH, then terminals can access the cell reliably, but the quantity of data transmitted increases bandwidth requirements
Solution Approach 1:
The patent segments system information into multiple categories and transmission channels. Essential access-critical parameters are transmitted periodically on the BCH in minimal form, while non-critical or updateable parameters are transmitted asynchronously or on demand through other channels. This segmentation reduces the periodic BCH data volume while maintaining reliable cell access capability.
Solution Approach 2:
The patent transmits only the partial set of system information parameters that are strictly necessary for terminal access and basic operation, rather than transmitting the complete system information set. By applying partial action, the system transmits minimal necessary data periodically on BCH, reducing bandwidth requirements while sufficient for reliable access.
3Speed
If system information is transmitted frequently on the BCH, then terminals can quickly access the cell, but radio network efficiency decreases due to higher bandwidth usage
Solution Approach 1:
The patent uses a lightweight, minimal system information transmission approach on the BCH that is sufficient for quick terminal access but is not intended to carry complete system information continuously. The BCH transmits only essential parameters in a simplified format, acting as a quick-access entry point rather than a complete information channel, thereby maintaining fast access speed while improving overall network efficiency.
Data Source
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AI summary
An arrangement for providing a mobile terminal, UE (1), with system information which enables the terminal (1) to access one of the cells of a cellular telecommunications system n is described. The arrangement is characterised by transmitting from the telecommunications system n to all terminals within the cell, including the terminal (1), a system information indicator that makes available to the terminal (1) system information to provide access to the system n. The system information indicator is transmitted on the broadcast channel (BCH). The system information indicator may be a sub-set of the system information conventionally transmitted on the BCH but which is sufficient to allow the mobile terminal (1) to access the network and obtain in the downlink further system information. Alternatively, the information transmitted in the BCH may be a profile index value which directs the mobile terminal (1) to retrieve from a store of the mobile terminal (1) system information pre-stored on the mobile terminal (1).