Radio Resource Pool Segmentation for Mode 3 and Mode 4 Coexistence

Solution Overview

Problem

Current wireless communication networks face performance degradation due to the lack of optimized mechanisms for coexistence between mode 3 and mode 4 wireless devices sharing radio resource pools, leading to resource collisions and inefficient resource usage.

Innovation Solution

Configuring separate pools of radio resources based on the mode and capability of wireless devices, with mode 3 devices being scheduled by the network and mode 4 devices independently selecting resources, and implementing mechanisms for resource reservation and feedback to avoid collisions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If mode 3 and mode 4 wireless devices share the same radio resource pool, then resource utilization efficiency is improved, but resource collisions occur leading to performance degradation

Engineering Contradiction:

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent segments the radio resource pool into separate resource pools for mode 3 devices and mode 4 devices. The network node configures different resource pools based on the operation mode of each wireless device, preventing resource collisions while maintaining high utilization efficiency. Mode 3 devices are scheduled using downlink control information, while mode 4 devices autonomously select resources from their dedicated pool.

Inventive Principle:

Principle #1Segmentation

2Reliability

If separate resource pools are configured for mode 3 and mode 4 devices, then resource collisions are avoided, but network complexity increases

Engineering Contradiction:

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements dynamic resource pool configuration where the network node adapts the resource pool assignment based on the operation mode of each wireless device. The configuration is flexible and can be adjusted in real-time according to device capabilities and network conditions, managed through RRC signaling that dynamically assigns appropriate resource pools without requiring complex static pre-configuration.

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If mode 4 devices independently select resources, then scheduling flexibility is improved, but resource collisions with mode 3 devices increase

Engineering Contradiction:

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent segments the resource pool specifically for mode 4 devices, creating a dedicated pool that is separate from mode 3 device resources. This segmentation allows mode 4 devices to independently select resources with full flexibility while guaranteeing no overlap with mode 3 device resources, thereby eliminating collision interference.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The network node acts as an intermediary by configuring and managing separate resource pools for different device modes. Through RRC signaling, the network node mediates resource allocation, ensuring that mode 4 devices have autonomous selection capability within their dedicated pool while the network maintains overall coordination and prevents interference with mode 3 devices.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11096149B2Radio network node, wireless device and methods performed therein

Publication Date: 2021.08.17

AI summary

Embodiments herein relate to a method performed by a radio network node for handling communication of wireless devices in a wireless communication network (1). The radio network node configures pools of radio resources for wireless devices to use based on a mode and a capability of the wireless devices, wherein the mode is a resource mode defined by manner of selecting radio resources and the capability is related to sidelink capability of the wireless devices.