Terminal Slicing Selection for Ultra-Low Latency Wireless Access
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Solution Overview
Problem
Existing wireless communication systems face challenges in achieving ultra-low latency and reliability for scenarios like autonomous driving and remote surgery due to inefficiencies in accessing cells, particularly in the context of Network Slicing.
Innovation Solution
A wireless communication method and system that enables a terminal device to quickly obtain slicing information from a network device, allowing it to determine target slicing information and access parameters, thereby reducing latency through optimized random access procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device uses traditional random access procedures to access a cell, then the access process is standardized and simple, but the latency is high and cannot meet ultra-low latency requirements for uRLLC scenarios
Solution Approach 1:
The network device pre-configures and indicates slicing information to the terminal device before the terminal device needs to access the network. This allows the terminal device to have slicing information ready in advance, eliminating the need for lengthy acquisition processes during actual access, thereby reducing access latency while ensuring reliable slice selection
Solution Approach 2:
Slicing information acts as an intermediary that carries essential network slice identification and access parameters. This intermediary enables the terminal device to quickly identify and access the appropriate network slice without extensive signaling exchanges, thus reducing latency while maintaining access reliability
2Loss of information
If the terminal device acquires slicing information through traditional methods, then the information can be obtained, but the time required for acquisition increases access latency
Solution Approach 1:
The network device transmits slicing information to the terminal device in advance through system information blocks or dedicated signaling before the terminal device needs to access the network. This preliminary provision of slicing information eliminates the need for time-consuming acquisition processes during actual access, directly reducing information acquisition time
Solution Approach 2:
The patent extracts essential slicing information (such as slice identifiers and access parameters) from the complete network configuration and presents only the necessary elements to the terminal device. This extraction of critical information reduces the amount of data the terminal device needs to process, thereby reducing information acquisition time while ensuring complete slicing information is available
3Adaptability or versatility
If the network device provides detailed slicing information to all terminal devices, then all devices can access any slice, but the system complexity and signaling overhead increase
Solution Approach 1:
The network device provides slicing information selectively based on terminal device characteristics, service requirements, and network conditions. Different terminal devices receive different sets of slicing information tailored to their specific needs, rather than all devices receiving identical comprehensive information. This reduces system complexity while maintaining the ability to access appropriate slices
Solution Approach 2:
The slicing information is segmented into different levels or categories (e.g., mandatory information, optional information, slice-specific information). The network device transmits only the necessary segments to each terminal device based on its access category and service requirements, reducing overall system complexity while preserving slice access flexibility where needed
Data Source
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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.