Random Access Method for Early Data Transmission
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Solution Overview
Problem
The existing Early Data Transmission (EDT) technology in NB-IoT and MTC networks leads to resource congestion and reduced success rates due to excessive resource consumption and blind scheduling by base stations.
Innovation Solution
A random access method where a terminal determines the service attribute of to-be-transmitted data, including service type, packet type, and latency attributes, and sends a random access request using dedicated resources only if the service attribute meets preset conditions for early data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station performs blind scheduling to ensure early data transmission success rate, then the success rate of early data transmission is improved, but resource consumption increases excessively
Solution Approach 1:
The terminal device autonomously determines whether to initiate early data transmission based on service attributes and preset conditions, without requiring the base station to perform blind scheduling. This self-service mechanism eliminates unnecessary resource allocation while ensuring that early data transmission is only performed when truly needed, thus maintaining success rate while reducing resource consumption
Solution Approach 2:
The system changes the decision parameter from base station blind scheduling to terminal-based service attribute evaluation. By introducing service type, packet type, and latency attributes as decision parameters, the system dynamically determines whether early data transmission should be initiated, optimizing resource usage while maintaining transmission success
2Loss of time
If dedicated resources are reserved for early data transmission, then latency and power consumption are reduced, but resource congestion occurs and success rate decreases
Solution Approach 1:
The system transitions from static reservation of dedicated resources to dynamic resource allocation based on real-time service attributes. The terminal device dynamically evaluates whether early data transmission is needed based on service type, packet type, and latency attributes, causing resources to be used dynamically only when necessary, thus avoiding congestion while maintaining low latency benefits
Solution Approach 2:
The terminal device autonomously determines whether to use dedicated early data transmission resources by evaluating service attributes against preset conditions. This self-service approach prevents unnecessary occupation of dedicated resources, reducing congestion while ensuring resources are available when truly needed for low-latency requirements
3Productivity
If the terminal initiates early data transmission frequently, then data transmission efficiency is improved, but resource consumption increases excessively
Solution Approach 1:
The system introduces service attributes (service type, packet type, latency) as additional parameters for decision-making. By evaluating these parameters against preset conditions, the terminal intelligently determines when early data transmission should be initiated, achieving high transmission efficiency for appropriate services while avoiding unnecessary resource consumption for services that don't meet the criteria
Data Source
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AI summary
This application provides a random access method and apparatus. The method includes: determining, by a terminal, a service attribute of to-be-transmitted data, where the service attribute includes one or more of the following: a service type attribute, a service packet attribute, and a service latency attribute; and sending, by the terminal if the service attribute meets a preset condition for early data transmission, a random access request to a network device by using a dedicated resource for the early data transmission. In this way, the early data transmission is initiated after the service attribute meets the preset condition for the early data transmission, so that a quantity of times for which the early data transmission is initiated is reduced, thereby saving resources. In addition, a success rate of the early data transmission can be improved.