Inactive State Random Access Request Authentication
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Solution Overview
Problem
In next-generation wireless communications systems like 5G, there is no established method for a terminal device in an inactive state to perform data communication with the network side, as the network lacks necessary identifiers to authenticate and recognize the sender of user data, leading to invalid data communication.
Innovation Solution
A communication method where a terminal device in an inactive state sends a random access request to a network device, including a connection identifier and authentication identifier, and performs state transitions based on different message formats of the random access response, ensuring data communication by correctly identifying the sender and maintaining or switching states as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the terminal device sends data in the inactive state without including connection identifier and authentication identifier, then the random access request can be sent, but the network device cannot authenticate the sender and the data communication fails
Solution Approach 1:
The terminal device performs preliminary actions by including the connection identifier and authentication identifier in the random access request before sending user data. This allows the network device to authenticate the sender in advance, ensuring that subsequent data communication is valid and reliable.
2Reliability
If the terminal device includes connection identifier and authentication identifier in the random access request, then the network can authenticate the sender, but the message format becomes more complex
Solution Approach 1:
The patent merges the connection identifier, authentication identifier, and user data into a single random access request message. This integration allows authentication information to be included without requiring separate signaling messages, thereby maintaining message format simplicity while ensuring reliable authentication.
3Reliability
If the network device receives random access request with authentication information, then valid data communication can be established, but the processing requirements increase
Solution Approach 1:
The terminal device performs self-service by autonomously generating and including its own connection identifier and authentication identifier in the random access request. This eliminates the need for the network device to perform complex authentication procedures, as the authentication information is already prepared by the terminal device itself.
Data Source
AI summary
A communication method and apparatus, the method including sending, by a terminal device, a random access request to a network device, where the random access request includes a random access preamble, control information, and user data, the terminal device is in an inactive state, and the control information includes at least a connection identifier and an authentication identifier, receiving, by the terminal device, a random access response sent by the network device, and performing, by the terminal device, a state transition AND/OR operation corresponding to a message format of the random access response.