Random Access Slice Signaling for Faster Wireless Network Access
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Solution Overview
Problem
Network devices may not support or be overloaded by the network slices required by terminal devices, leading to service delays due to the need for terminal devices to reselect suitable cells after receiving an RRC connection release message.
Innovation Solution
Terminal devices transmit slice-related information in the random access procedure indicating supported network slices, allowing network devices to allocate resources efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network device waits until Msg 5 is received to obtain network slice information, then the random access procedure can be completed, but the terminal device experiences service delay when the required network slice is not supported or overloaded
Solution Approach 1:
The terminal device performs preliminary action by transmitting network slice information (first slice-related information) during the random access procedure (in Msg 3 or Msg A), before the network device completes processing. This allows the network device to evaluate slice compatibility and load status in advance, avoiding service delay that would occur if the terminal had to reselect cells after receiving an RRC connection release message.
2Productivity
If the terminal device transmits slice-related information in the random access procedure, then the network device can allocate resources efficiently, but the random access procedure becomes more complex
Solution Approach 1:
The terminal device merges the transmission of network slice information with the existing random access procedure by including the first slice-related information in Msg 3 or Msg A. This combines multiple functions (random access and slice information reporting) into a single procedure, avoiding the need for separate signaling and reducing overall system complexity despite the added information transmission.
Data Source
AI summary
A wireless communication method and a terminal device are provided. The method includes the following. A terminal device transmits first slice-related information to a network device, where the first slice-related information is carried in a random access procedure, and the first slice-related information indicates whether the terminal device supports a network slice and/or indicates a network slice supported by the terminal device.