On-Demand System Message Acquisition in 5G Terminals
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Solution Overview
Problem
In 5G systems with ultra-dense networking, the need for terminals to periodically receive all system messages from base stations leads to increased energy consumption and resource overhead, as they must broadcast all system information regardless of usage needs.
Innovation Solution
A method where terminals determine if a service system message is needed based on specific conditions, and if so, send a request to the base station, allowing the base station to flexibly send only required system messages, reducing unnecessary broadcasts and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station periodically broadcasts all system messages to ensure terminals can obtain necessary information, then the terminals can reliably access system information, but the system energy consumption and resource overhead increase significantly
Solution Approach 1:
The patent extracts and separates the system message broadcast process into two parts: (1) a first system message that is periodically broadcast to all terminals, and (2) a second system message that is sent on-demand only when specific terminals request it. This extraction principle allows the system to maintain reliable information availability for common requirements while eliminating unnecessary energy consumption for terminals that do not need the complete system information.
Solution Approach 2:
The patent implements a self-service mechanism where terminals autonomously determine whether they need the second system message by checking their own service requirements against the information already obtained from the first system message. Terminals that determine they need additional information actively request it, while those that don't need it simply ignore the request opportunity. This self-service approach eliminates the need for the base station to broadcast information that no terminal needs, thereby reducing system energy consumption while maintaining reliability for those who require it.
2Ease of operation
If the base station broadcasts all system messages periodically to ensure complete information availability, then terminals can access any system information without additional requests, but the resource overhead and network traffic increase
Solution Approach 1:
The patent segments the system message broadcast into two distinct parts: a first system message containing essential information for all terminals, and a second system message containing additional information available on-demand. This segmentation allows the network to reduce overall broadcast traffic by separating commonly needed information from specialized information, thereby reducing resource overhead while maintaining ease of access for the essential portion.
Solution Approach 2:
The patent implements a periodic broadcast mechanism for the first system message at predetermined intervals, while the second system message is transmitted only when requested by terminals within a specific time window after the first message. This periodic action combined with on-demand supplementation reduces network resource overhead by eliminating continuous full broadcasts, while terminals can still access system information reliably through the periodic updates supplemented by on-demand requests when necessary.
3Loss of energy
If the base station sends system messages on-demand based on terminal requests, then system energy consumption and resource overhead are reduced, but terminals must actively manage their information needs and request timing
Solution Approach 1:
The patent applies preliminary action by having the base station first broadcast a comprehensive first system message that contains essential information for all terminals before any on-demand requests are processed. This preliminary broadcast provides terminals with a foundation of knowledge that allows them to make informed decisions about whether they need additional second system messages, thereby reducing the complexity of information management while still enabling energy-efficient on-demand transmission for specialized information.
Data Source
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AI summary
Disclosed in the present invention are methods and apparatus for obtaining a system message, a terminal, and a base station. The method comprises: after a first basic system message of a current cell sent by a base station is received, determining whether a service system message needs to be obtained; when it is determined that the service system message needs to be obtained, sending, to the base station, a system request message for requesting the service system message; and receiving the service system message sent by the base station according to the system request message.