Network Slice RACH Resource Configuration for Low-Latency Access
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Solution Overview
Problem
The introduction of network slicing at the radio access network (RAN) side has not been adequately addressed in existing wireless communication systems, particularly in terms of determining the procedure for network slice-based random access channels (RACH), which is essential for supporting vertical industry services requiring low latency, flexibility, and scalability.
Innovation Solution
A method and devices for configuring random access resources that associate specific resources with network slices, allowing terminal devices to receive and network devices to transmit configuration information that includes multiple random access resources tailored to different network slices, enabling efficient slice-based random access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network slicing is introduced at RAN side, then support for vertical industry services requiring low latency and flexibility is improved, but the procedure for network slice-based random access channel has not been determined leading to increased system complexity
Solution Approach 1:
The patent segments the random access channel resources by associating different random access resources with different network slices. The network device receives first configuration information including at least two random access resources associated with a network slice, allowing the system to divide the random access procedure into slice-specific segments rather than using a unified approach.
Solution Approach 2:
The patent applies local quality by configuring specific random access resources for specific network slices rather than using uniform configuration across all slices. The terminal device determines which random access resource to use based on the network slice it needs to access, allowing each slice to have optimized local characteristics suited to its specific requirements.
2Loss of time
If multiple random access resources are configured for different network slices, then random access latency is reduced, but configuration and management complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring multiple random access resources associated with different network slices before the terminal device needs to perform random access. The network device receives configuration information in advance that includes mappings between network slices and specific random access resources, so that when random access is needed, the terminal device can immediately select the appropriate pre-configured resource without delay.
Solution Approach 2:
The patent uses the first configuration information as an intermediary that carries the mapping relationships between network slices and random access resources. This configuration information acts as a mediator that translates network slice identifiers into specific random access resource identifiers, simplifying the selection process for the terminal device.
3Productivity
If network slice-based random access resources are configured, then service-specific access efficiency is improved, but the procedure determination complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying the random access channel parameters (such as preamble sequences, time-frequency resources) according to different network slice requirements. The network device configures different random access resources with different parameters for different network slices, allowing each slice to use optimized parameters suited to its service characteristics.
Data Source
AI summary
A method for random access resource configuration, a terminal device, and a network device are provided. The method includes the following. A terminal device receives first configuration information, where the first configuration information includes at least two random access resources associated with or corresponding to a network slice.