MTC Terminal Data Transmission via Random Access Resource Comparison
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Solution Overview
Problem
Machine type communication (MTC) terminal devices face challenges with low resource utilization and inability to meet data transmission delay requirements due to complex and resource-intensive RRC connection establishment procedures, especially when transmitting small volumes of data.
Innovation Solution
A data transmission method where the terminal device sends a random access request message using a first random access resource to indicate data transmission during the initial access process, and based on allocated transmission resources, determines the optimal message type to use for data transmission, either an RRC message or an uplink message, to reduce resource consumption and delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal device uses the traditional RRC connection establishment procedure to transmit data, then the data transmission can be performed, but the resource utilization is low and the delay requirement cannot be met
Solution Approach 1:
The patent applies preliminary action by allowing the terminal device to transmit data during the random access procedure (before RRC connection establishment) using the third message. This enables data to be sent in advance during the initial access process, eliminating the need to wait for complete RRC connection establishment, thereby reducing delay and improving transmission efficiency for small data packets
2Productivity
If the terminal device establishes an RRC connection before reporting data, then the data transmission can be performed, but the resource consumption is high due to complex signaling interaction
Solution Approach 1:
The patent merges the data transmission function with the random access procedure by allowing data to be carried in the third message during initial access. This combines two previously separate processes (connection establishment and data transmission) into one, reducing signaling overhead and complexity while maintaining transmission capability
3Quantity of substance
If the terminal device uses the RRC connection establishment procedure for small volume data transmission, then the data can be reported, but the resource utilization is low because large quantities of resources are used for connection establishment
Solution Approach 1:
The patent applies partial action by allowing the terminal device to transmit only the necessary small volume data during the random access procedure without completing the full RRC connection establishment. This partial transmission approach uses fewer resources (only the random access resources) while still achieving the data reporting goal, thereby improving resource utilization
Data Source
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AI summary
A data transmission method and a device are provided, so as to resolve problems, existing in an existing technical solution in which a MTC terminal device transmits data to a network device, of low resource utilization and inability to meet a requirement on a data transmission delay. The method includes: sending, by a terminal device, a random access request message to a network device by using a first random access resource; sending, by the network device to the terminal device, a random access response message that includes first information, where the first information is used to indicate a transmission resource allocated by the network device to the terminal device; and sending, by the terminal device based on a result of comparing a size of the transmission resource with a size of an RRC message and/or a result of comparing the/a size of the transmission resource with a size of second data, first data to the network device by using a specified message.