5G Terminal Data Transmission via Pre-allocated Resources
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional data transmission methods in 5G networks require establishing an RRC connection for each uplink data packet, which is not suitable for scenarios with low latency requirements, leading to poor flexibility and increased latency.
Innovation Solution
A method where a terminal sends a data message carrying state transition data before an air interface signaling connection is established, and receives a response message with a data transmission indication, allowing the uplink data packet to be sent only when the indication indicates transmitting, thereby controlling whether the data packet migrates to the RRC connection state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an RRC connection is established for each uplink data packet transmission, then the data transmission reliability is improved, but the transmission latency increases and network flexibility deteriorates
Solution Approach 1:
The terminal performs random access and obtains uplink scheduling resources in advance before having data to transmit. The network side device pre-allocates resources and establishes a resource pool that can be used immediately when data becomes available, eliminating the need to establish RRC connection at the moment of data transmission.
Solution Approach 2:
The system dynamically selects between two transmission modes: using pre-obtained uplink resources for fast transmission when available, or establishing RRC connection when no preallocated resources exist. This dynamic adaptation allows the system to optimize between speed and reliability based on current conditions.
2Ease of operation
If an RRC connection is established for each uplink data packet, then the data transmission control is improved, but the network flexibility deteriorates
Solution Approach 1:
The uplink transmission process is segmented into two independent parts: random access for resource acquisition, and data transmission using preallocated resources. This segmentation allows the terminal to transmit data quickly using only the random access procedure without requiring full RRC connection establishment, thereby improving network flexibility while maintaining control.
Solution Approach 2:
The patent introduces an intermediate state between idle and connected modes, where the terminal has obtained uplink scheduling resources through random access but has not established a full RRC connection. This intermediate state serves as a mediator that provides sufficient control for data transmission while avoiding the overhead of complete connection establishment.
3Stability of the object's composition
If RRC connection establishment is required for each uplink data packet, then the network control stability is improved, but the signaling load increases
Solution Approach 1:
The patent extracts the essential function of resource allocation from the complete RRC connection establishment process. By separating resource acquisition (through random access) from full connection setup, the system removes unnecessary signaling overhead while retaining the core control function needed for stable network operation.
Data Source
AI summary
The present disclosure provides a data transmission method, a terminal, and a network side device. The data transmission method includes: before an air interface signaling connection is established, sending a data message carrying state transition data to a network side device; receiving a response message returned by the network side device in response to the data message, a data transmission indication included in the response message; when the data transmission indication indicates transmitting, sending an uplink data packet to the network side device.