Network Slice Selection for Low-Latency Wireless Access
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Solution Overview
Problem
The challenge of achieving ultra-low latency in wireless communication, particularly in 5G systems for scenarios like autonomous driving and remote surgery, is not adequately addressed by existing technologies, especially in the context of cell access and random access procedures.
Innovation Solution
The implementation of network slicing information to facilitate quick cell selection and resource allocation by indicating slicing information supported by a target cell, utilizing both four-step and two-step random access procedures to reduce latency and enhance reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional four-step random access procedure is used, then access reliability is improved, but access latency increases
Solution Approach 1:
The patent applies preliminary action by performing cell selection and slicing information determination before the random access procedure. The terminal device determines target slicing information based on slicing information indicated by the target cell before initiating access, which prepares the device in advance and enables faster access while maintaining reliability through pre-configured slicing parameters.
Solution Approach 2:
The patent segments the access procedure into distinct phases: cell selection phase, slicing information determination phase, and random access execution phase. This segmentation allows the device to optimize each phase independently, using the two-step random access specifically for time-sensitive scenarios while maintaining the four-step procedure for reliability-critical operations.
2Speed
If ultra-low latency is achieved through simplified access procedures, then access speed is improved, but access reliability deteriorates
Solution Approach 1:
The patent implements dynamics by making the random access procedure adaptive - selecting between two-step and four-step procedures based on service requirements and network conditions. The terminal device dynamically chooses the access method that balances speed and reliability for each specific access scenario, rather than using a fixed procedure.
Solution Approach 2:
The patent changes parameters by introducing slicing-specific random access parameters that can be independently configured for different network slices. This allows optimization of access speed parameters for latency-sensitive slices while maintaining reliability parameters for other slices, resolving the contradiction through parameter differentiation.
3Productivity
If network slicing information is indicated to facilitate quick cell selection, then cell selection efficiency is improved, but information processing complexity increases
Solution Approach 1:
The patent extracts only the essential slicing information needed for cell selection and access determination from the complete network slicing configuration. The network device indicates specific slicing information parameters that are sufficient for the terminal device to determine target slicing information and proceed with access, avoiding transmission and processing of unnecessary information.
Data Source
AI summary
The embodiments of the present disclosure relate to a communication method, a terminal device, and a network device, which can meet the requirement that the terminal device performs a series of actions with relatively low latency. The method includes: receiving, by a terminal device, first information, the first information being used to indicate at least one piece of slicing information supported by a target cell; and determining, by the terminal device based on the at least one piece of slicing information, target slicing information.