Wireless System Information Update via Superframe Headers
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Solution Overview
Problem
Conventional wireless communication systems face delays in updating system information, leading to deteriorated service quality for user equipment (UEs) that fail to receive updated radio frames, as the current method transmits updated system information only once and has a long transmission period.
Innovation Solution
Implementing a superframe structure with a primary header containing system scheduling information, including secondary header change state information, applying information, and a change indicator, allowing UEs to receive updated system information at a different time and apply it stably, reducing the risk of communication disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If updated system information is transmitted only once with a long transmission period, then the transmission period is simplified, but UEs failing to receive the radio frame cannot access the system until they receive the updated information, causing communication recovery time delay and service quality deterioration
Solution Approach 1:
The patent applies preliminary action by transmitting updated system information multiple times before it is actually applied to the system. The base station transmits updated system information in advance, allowing UEs to receive and store the updated information before the system switches to using it. This ensures that even if a UE misses one transmission, it can still access the updated system information from previous transmissions, thereby improving system access reliability without complicating the transmission period structure.
2Device complexity
If the transmission period of system information is set to a relatively long time, then the transmission schedule is simplified, but the communication recovery time during which UEs receive the newly transmitted system information is delayed, deteriorating service quality
Solution Approach 1:
The patent applies preliminary action by transmitting updated system information multiple times before application. The base station transmits the updated information in advance during the long transmission period, so that when the system finally applies the update, UEs have already received and stored the updated information. This reduces the effective communication recovery time for UEs while maintaining the simplified long transmission schedule.
3Device complexity
If updated system information is transmitted only once, then the transmission process is simplified, but UEs that fail to receive the radio frame are unable to access the system until they receive the updated system information
Solution Approach 1:
The patent applies preliminary action by transmitting updated system information multiple times before application. This ensures that even if a UE misses one transmission, it can still access the updated system information from previous transmissions. The base station transmits the updated information in advance, making the system more tolerant of UE reception failures while maintaining a simplified transmission process.
Solution Approach 2:
The patent applies beforehand cushioning by transmitting updated system information multiple times before it is applied to the system. This creates a buffer or cushion of redundant transmissions that compensate for UE reception failures. The multiple preliminary transmissions ensure that at least one UE can successfully receive and process the updated information, thereby improving ease of operation for UEs accessing the system.
Data Source
AI summary
The present invention provides a method of a Base Station (BS) updating system information using a superframe structure in a wireless communication system, comprising transmitting a primary header including system scheduling information pertinent to an update of the system information and transmitting an updated secondary header. The system scheduling information comprises secondary header change state information indicating a change state of the updated secondary header, secondary header applying information indicating whether the secondary header change state information is applied to a current system, and a secondary header change indicator indicating the updated secondary header.