MTC Terminal On-Demand System Information Acquisition in 5G
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Solution Overview
Problem
In 5G networks, Machine Type Communication (MTC) terminals waste resources by continuously monitoring additional system information transmitted through high-frequency beams, as they do not have a mechanism to efficiently acquire this information only when needed.
Innovation Solution
MTC terminals detect triggering conditions such as service demand or cell handover requirements and send acquisition requests to the base station for additional system information, which is then sent directionally, allowing the terminals to request information only when necessary and reducing unnecessary resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MTC terminals continuously monitor additional system information transmitted through high-frequency beams in a beam sweeping manner, then the terminals can acquire system information, but resources are wasted due to unnecessary continuous monitoring
Solution Approach 1:
The patent transforms the static continuous monitoring mode into a dynamic on-demand monitoring mode. MTC terminals dynamically adjust their monitoring behavior based on whether they have data transmission or reception requirements. When no data communication is needed, terminals stop monitoring additional system information. When data communication is required, terminals actively acquire the information. This dynamic adjustment resolves the contradiction between ensuring reliable information acquisition and avoiding resource waste.
Solution Approach 2:
The patent enables MTC terminals to self-determine when they need additional system information based on their own data transmission and reception requirements. Instead of passively receiving continuous broadcasts or actively monitoring continuously, terminals autonomously decide whether to acquire additional system information based on their current communication needs. This self-service mechanism eliminates unnecessary resource consumption while ensuring information is available when needed.
2Loss of information
If MTC terminals continuously monitor additional system information like mobile terminals, then information availability is ensured, but resource efficiency deteriorates due to unnecessary monitoring
Solution Approach 1:
The patent implements dynamic monitoring where terminals adjust their monitoring activity based on real-time communication needs. Instead of continuous monitoring that wastes resources, terminals dynamically activate monitoring only when data transmission or reception is required. This dynamic approach maintains information availability when needed while dramatically improving resource efficiency by eliminating unnecessary monitoring periods.
Solution Approach 2:
The patent changes the monitoring parameter from a fixed continuous state to a variable state that adapts to communication requirements. Terminals transition between monitoring and non-monitoring states based on whether data communication is needed. This parameter change resolves the contradiction by ensuring information is available when required while avoiding resource waste during periods when monitoring is unnecessary.
3Reliability
If additional system information is transmitted continuously in a beam sweeping manner, then all terminals can receive information, but energy consumption increases due to unnecessary transmissions
Solution Approach 1:
The patent transforms continuous information transmission into periodic transmission aligned with scheduling periods. Base stations transmit additional system information periodically rather than continuously, synchronized with existing scheduling periods. This periodic transmission maintains coverage for all terminals that need information while significantly reducing energy consumption by eliminating transmissions during periods when no terminals require the information.
Solution Approach 2:
The patent implements dynamic transmission where base stations adjust their transmission behavior based on terminal requirements. Instead of continuous broadcasting that consumes energy unnecessarily, the system dynamically transmits additional system information only when terminals have data communication requirements. This dynamic approach maintains reliable coverage for needing terminals while reducing overall energy consumption.
Data Source
AI summary
A method for acquiring includes: after receiving key system information broadcast by a base station, detecting whether a triggering condition for acquiring additional system information is met; when determining that the triggering condition is met, sending an acquisition request for the additional system information to the base station; and receiving the additional system information directionally sent by the base station according to the acquisition request; where the key system information is minimum system information required for the terminal to randomly access the base station, and the additional system information is system information other than the key system information. A machine type communication (MTC) terminal acquires the additional system information only when the triggering condition for acquiring the additional system information is met, which is more suitable for beam sweeping scenarios in 5G, and improves efficiency.