Client Terminal BSIB for Wireless Power and Latency
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Solution Overview
Problem
Client terminals in wireless communication systems face high power consumption and latency due to frequent transitions between power states, particularly during the reception of system parameter messages that do not change over time, leading to inefficient battery usage and user experience.
Innovation Solution
Implementing a method to store and manage system parameter messages from the N most recent Serving Base Stations (SBS) and Neighboring Base Stations (NBS) using a Base Stations Information Base (BSIB) with validity flags and timers, allowing for the avoidance of unnecessary message updates and reducing active state durations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the client terminal receives all system parameter messages from base stations, then the system information is kept up-to-date, but power consumption increases and battery life decreases
Solution Approach 1:
The patent applies preliminary action by having the client terminal store system parameter messages from multiple base stations in advance (in the BSIB structure) before they are needed. This allows the terminal to quickly determine whether updates are necessary without continuously receiving and processing all messages, thereby reducing power consumption while maintaining information accuracy.
Solution Approach 2:
The patent implements partial action by having the client terminal selectively receive and process only those system parameter messages that contain actual updates, rather than receiving all messages unconditionally. The terminal compares stored messages with newly received ones and processes only the differences, reducing unnecessary power consumption while maintaining system information accuracy.
2Reliability
If the client terminal frequently transitions between power states to receive system parameter messages, then the system information is kept current, but latency increases and user experience deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-storing system parameter messages from multiple base stations in the BSIB structure before connection is needed. When the terminal needs to connect, it can quickly determine whether updates are required by comparing stored information with current messages, significantly reducing connection latency and improving user experience while maintaining information currency.
Solution Approach 2:
The patent implements skipping by allowing the client terminal to skip the reception and processing of system parameter messages that have not changed. By using validity flags and timers to identify unchanged messages, the terminal can rapidly determine whether updates are needed and skip unnecessary processing steps, reducing latency during connection and reconnection events.
3Use of energy by moving object
If the client terminal stores system parameter messages from multiple base stations, then the need for frequent updates is reduced, but memory requirements and device complexity increase
Solution Approach 1:
The patent applies segmentation by dividing the stored system parameter messages into organized entries within the BSIB structure, where each base station's information is separated into distinct recordable units. This segmentation allows efficient storage, retrieval, and comparison of messages from multiple base stations without creating excessive complexity, as each segment can be independently managed and processed.
Solution Approach 2:
The patent introduces an intermediary structure (the BSIB with its organized entries, validity flags, and timers) that mediates between the incoming system parameter messages and the terminal's processing requirements. This intermediary organization simplifies the complexity by providing a standardized format for storing and comparing messages, making the overall system more manageable despite handling multiple base stations.
4Reliability
If the client terminal updates system information frequently, then the information remains accurate, but battery life is reduced
Solution Approach 1:
The patent implements partial action by having the client terminal update system information only when actual changes are detected through comparison with stored messages. By using validity flags and timers to identify unchanged messages, the terminal performs updates selectively rather than frequently, maintaining information accuracy while preserving battery life in battery-operated devices.
Data Source
AI summary
In a wireless communication system, a client terminal may be required to periodically receive the broadcast and multicast system information of the serving and neighbor base stations. In most scenarios the broadcast and multicast system information of base stations may not change frequently. A method and apparatus are disclosed to store, manage and use the broadcast and multicast system information of a set of latest serving and neighbor base stations. This may enable a client terminal to avoid receiving and processing all or most of the base station system information messages. This may significantly reduce the active states of a client terminal and may lead to significant reduction in power consumption, which may be a critical advantage for battery operated client terminals. The present invention may also reduce the time taken by a client terminal to get connected or reconnected to a base station, which may improve the user experience.