Cloud Sidelink Resource Control Across PLMNs to Prevent V2X Interference

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Solution Overview

Problem

Existing V2X sidelink communication systems in 3GPP cellular networks face interference issues due to operator-centric resource allocation, as UEs from different PLMNs cannot share spectrum efficiently, leading to inter-zone interference and the inability of operator-centric schedulers to prevent interference among UEs on the same carrier frequency.

Innovation Solution

A network entity, such as a cloud server, controls sidelink radio resources across multiple PLMNs, managing resource allocation and scheduling without modifying the standard UE architecture, ensuring orthogonal resource allocation and interference prevention through a unified resource pool and zone configuration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If operator-centric sidelink schedulers are used in 3GPP cellular networks, then each operator can manage its own V2X sidelink resources independently, but interference occurs among UEs from different PLMNs transmitting on the same carrier frequency

Engineering Contradiction:

Improveoperator independenceVSAvoidinterference

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a new network entity called V2X Sidelink Radio Controller that acts as an intermediary between multiple PLMNs and the sidelink UEs. This controller receives sidelink resource requests from base stations of different operators, manages the resource pools centrally, and allocates resources in a way that prevents interference between operators while maintaining operator independence. The intermediary entity enables coordinated resource management across PLMNs without requiring changes to existing operator infrastructure.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If UEs from different operators use separate resource pools, then operator independence is maintained, but spectrum sharing efficiency decreases and inter-zone interference increases

Engineering Contradiction:

Improveoperator independenceVSAvoidspectrum sharing efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent merges the sidelink resource management functions of multiple operators into a unified resource pool managed by the V2X Sidelink Radio Controller. Instead of maintaining separate resource pools for each operator, the controller creates a shared resource pool that all operators can access. This merging enables efficient spectrum sharing while the controller ensures that resources are allocated orthogonally to nearby UEs from different operators, preventing interference and maintaining operational independence.

Inventive Principle:

Principle #5Merging (Combining)

3Productivity

If a unified resource pool is implemented for multiple PLMNs, then spectrum sharing efficiency improves, but the complexity of resource management increases

Engineering Contradiction:

Improvespectrum sharing efficiencyVSAvoidresource management complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the unified resource management function into distinct modular components: the V2X Sidelink Radio Controller that handles high-level resource allocation and coordination, the base stations that manage local UE connections, and the UEs that perform autonomous resource selection or scheduled transmission. This segmentation distributes the management complexity across multiple entities rather than concentrating it in one system, making the overall resource management more manageable while maintaining unified resource pool efficiency.

Inventive Principle:

Principle #1Segmentation

4Ease of operation

If operator-centric scheduling is used, then each operator's UEs can be scheduled independently, but nearby UEs from different operators cannot have orthogonal resources allocated

Engineering Contradiction:

Improvescheduling simplicityVSAvoidinterference

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent implements a feedback mechanism where the V2X Sidelink Radio Controller receives information about UE locations, channel conditions, and resource usage from base stations of different operators. Based on this feedback, the controller dynamically adjusts resource allocations to ensure that nearby UEs from different operators receive orthogonal resources. The controller uses location information to identify potentially interfering UEs and modifies resource assignments accordingly, maintaining scheduling simplicity while eliminating interference through informed decision-making.

Inventive Principle:

Principle #23Feedback

Data Source

PatentEP3622776B1Cloud server for sidelink radio interface configuration and base station

Publication Date: 2026.01.28 HUAWEI TECH CO LTD

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AI summary

The present invention relates to a network entity (110), in particular a cloud server (110), comprising a processor (110a) being configured to control radio resources, in particular sidelink radio resources, on behalf of one or more, in particular two, mobile networks (PLMNs) (120, 130). Moreover, the invention relates to a base station (BS) (123, 133) of a PLMN (120, 130), comprising a processor (133a) configured to process control plane information related to control of radio resources, in particular sidelink radio resources, and a communication interface (133b) configured to transmit and/or receive to/from the network entity (110) said control plane information.