Wireless System Information Bit Stream Segmentation for Access Speed
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Solution Overview
Problem
In wireless communication systems like WIMAX and IEEE 802.16, unstructured system information leads to inefficient bandwidth usage and unpredictable network entry times due to high signal overhead and irregular broadcasting.
Innovation Solution
A method where system information bit streams are categorized into network-entry-related and non-network-entry-related streams, modulated using different modulation and coding schemes, and transmitted at distinct periods, with network-entry-related streams sent periodically and non-network-entry-related streams transmitted less frequently or upon request, to reduce signal overhead and improve spectrum efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If unstructured system information is broadcast in an irregular manner, then all system information can be transmitted, but bandwidth usage becomes inefficient and network entry time becomes unpredictable and lengthy
Solution Approach 1:
The patent segments system information into two distinct categories: network-entry-related information (transmitted frequently with short period) and non-network-entry-related information (transmitted less frequently with long period). This segmentation allows terminals to quickly acquire essential network access information without waiting for complete system information broadcasts, thereby reducing network entry time while maintaining efficient bandwidth usage.
2Productivity
If system information is broadcast frequently to reduce network entry time, then network access speed improves, but signal overhead increases and bandwidth efficiency decreases
Solution Approach 1:
The patent applies local quality by assigning different transmission characteristics to different types of system information. Network-entry-related information uses a first transmission period with higher frequency to ensure quick access, while non-network-entry-related information uses a second transmission period with lower frequency to conserve bandwidth. This localized optimization of transmission quality for different information types resolves the contradiction between access speed and bandwidth efficiency.
3Ease of operation
If all system information is transmitted with the same period, then transmission simplicity is maintained, but essential information cannot be prioritized for faster access
Solution Approach 1:
The patent introduces dynamic transmission periods by setting a first transmission period for network-entry-related information that is shorter than the second transmission period for non-network-entry-related information. This dynamic differentiation in transmission timing allows essential information to be prioritized and made available faster, while maintaining a structured and manageable transmission framework through clearly defined period relationships.
Data Source
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AI summary
A method for transmitting system information bit streams of one or more base stations in a wireless communicat ion system is provided. The method includes: identifying network-entry- related bit streams and non-network-entry-related bit streams from the system information bit streams, where the network-entry-related bit streams carry essential system information for a terminal to access a network through at least one of the base stations; modulating the network- entry-related bit streams according to a first set of modulation and coding sch emes (MCSs) and modulating the non-network-entry-related bit streams according to a second set of MCSs; and transmitting the system information bit streams with different frequen cies, where the network- entry-related bit streams are periodically transmitted according to a first predeter mined period.