Network Node System Information Table Segmentation
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Solution Overview
Problem
In traditional cellular systems, network nodes waste energy by repeatedly broadcasting system access parameters even when no wireless terminals are present, leading to low network utilization and inefficient energy use.
Innovation Solution
Implementing a method where network nodes broadcast a system information table and a version indicator separately, allowing wireless terminals to update only when necessary, and reducing the frequency of system information broadcasts, with the option to transmit the table only upon request from a terminal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If system information table is broadcast repeatedly in traditional cellular systems, then wireless terminals can receive system access parameters, but network energy consumption increases significantly
Solution Approach 1:
The patent segments the system information broadcast into two separate components: a compact version indicator (few bytes) and the full system information table (large size). The version indicator is broadcast frequently to notify terminals of updates, while the full table is transmitted only when actually needed. This segmentation allows the network to maintain information availability with minimal energy consumption by avoiding repeated transmission of the complete table.
Solution Approach 2:
The patent extracts the essential notification function from the full system information broadcast by isolating the version indicator. This extracted element carries the critical information needed to trigger terminal actions (checking for updates) without including the bulky system information table. The version indicator is transmitted independently and frequently, while the table is transmitted separately only when version changes occur.
2Loss of information
If system information table is broadcast frequently to ensure terminals have up-to-date information, then information freshness is maintained, but network resources are wasted
Solution Approach 1:
The patent implements periodic broadcasting of the version indicator at predetermined intervals, while the full system information table is transmitted only periodically when version changes occur. This periodic action pattern ensures that terminals are notified of updates without requiring continuous transmission of the complete table, thereby maintaining information freshness while minimizing network resource waste.
Solution Approach 2:
The patent introduces a feedback mechanism where terminals monitor the version indicator broadcasts and independently determine whether to request or process full system information based on version changes. This feedback loop allows terminals to actively manage their information updates, reducing unnecessary network transmissions while ensuring they receive updates when needed.
3Use of energy by moving object
If system information table is broadcast only upon request from terminals, then energy consumption is minimized, but terminals may experience delays in receiving critical information
Solution Approach 1:
The patent performs preliminary action by broadcasting the version indicator in advance before terminals need to access the full system information table. Terminals monitor these preliminary version indicators and can proactively prepare for or request full table transmission when version changes are detected, rather than waiting passively for requested information. This preliminary notification mechanism reduces delays while still avoiding unnecessary full table transmissions.
Data Source
AI summary
It is presented a method, performed in a network node, for sending system information. The method comprises the steps of: broadcasting, using at least one message, a system information table and a version indicator of the system information table, wherein each entry of the system information table comprises an entry identifier and a set of system access parameters, such that a radio node broadcasting an entry identifier is accessible through system access by a wireless terminal having access to the system information table; and broadcasting, a version message comprising the version indicator of the system information table, the version message omitting the system information table. A corresponding network node and wireless terminal are also presented.