Network Slice Random Access Signaling for Lower Connection Latency

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Solution Overview

Problem

Existing wireless communication systems lack efficient mechanisms for wireless devices to utilize network slices during random access procedures, leading to suboptimal resource allocation and performance.

Innovation Solution

Wireless devices receive configuration parameters for random access resources specific to network slices and transmit RA preambles and reports, enabling efficient utilization of RA resources based on network slice identifiers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional random access procedures are used in LTE networks, then devices can establish initial connections, but the procedures are not optimized for Machine Type Communication and result in increased latency and signaling overhead

Engineering Contradiction:

ImproveRandom access efficiencyVSAvoidRandom access latency

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent changes key parameters of the random access procedure by introducing a two-step format instead of the conventional four-step process. This reduces the number of signaling exchanges and optimizes timing parameters for MTC devices, thereby improving efficiency and reducing latency simultaneously.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If conventional random access procedures are used, then devices can transmit uplink data, but signaling overhead is increased due to multiple message exchanges

Engineering Contradiction:

ImproveConnection establishment capabilityVSAvoidSignaling overhead

Core Design Contradiction:

Ease of operationVSLoss of information

Solution Approach 1:

The patent merges multiple signaling messages into fewer exchanges. The two-step random access procedure combines what would traditionally be separate messages into consolidated transmissions, reducing the total signaling overhead while maintaining the essential functionality of connection establishment.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If network slice information is not pre-configured, then device flexibility is maintained, but random access latency increases due to additional signaling

Engineering Contradiction:

ImproveNetwork slice selection flexibilityVSAvoidNetwork slice indication latency

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-configuring network slice information in the device before random access occurs. This allows the device to immediately indicate the desired network slice without requiring additional signaling exchanges during the random access procedure, thereby reducing latency while maintaining flexibility through pre-selected options.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP4458093B1Random access information based on network slices

Publication Date: 2026.05.20 OFINNO LLC

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Figure 2A~2B
Figure 3

AI summary

A wireless device sends one or more preambles for a random access (RA) procedure via a cell. The wireless device transmits, to a first base station, a RA report of the RA procedure, wherein the RA report indicates at least one first network slice associated with the RA procedure.