Communication Device Sidelink Channel Guard Resource Allocation

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Solution Overview

Problem

In wireless communication systems, particularly in LTE and NR, sidelink channels set to downlink radio resources or unlicensed bands face degradation due to in-band emission and interference, affecting communication quality between base station and terminal devices.

Innovation Solution

A communication device and method that allocate a predetermined gap to the boundary of a channel resource, adjust transmission timing by adding an offset, and set individual transmission power for uplink, downlink, and unlicensed band radio resources to mitigate interference and improve communication quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a sidelink channel is set to downlink radio resources or unlicensed bands, then inter-device communication can be enabled, but communication quality degrades due to in-band emission and interference between links

Engineering Contradiction:

Improvesidelink channel allocationVSAvoidcommunication quality

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The resource allocation is segmented by introducing a guard resource at the boundary between sidelink channel resources and other channel resources. This segmentation isolates the sidelink channel from interfering signals, allowing inter-device communication to proceed without degradation from in-band emission or interference between links.

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If radio resources are allocated for inter-device communication, then device-to-device connectivity is achieved, but interference between different transmission sources increases

Engineering Contradiction:

Improveinter-device communicationVSAvoidinterference between links

Core Design Contradiction:

Ease of operationVSObject-generated harmful factors

Solution Approach 1:

A guard resource acts as an intermediary element between the sidelink channel resources and other channel resources. This intermediary absorbs or mitigates the interference between different transmission sources, enabling seamless inter-device communication while protecting against harmful interference effects.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If channel resources are used for sidelink communication, then resource utilization is improved, but in-band emission affects adjacent channels

Engineering Contradiction:

Improveresource utilizationVSAvoidin-band emission

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The guard resource converts the potentially harmful in-band emission into a controlled phenomenon by providing a designated buffer zone. This allows the sidelink channel to operate at full capacity for improved resource utilization, while the guard resource absorbs the in-band emission energy that would otherwise interfere with adjacent channels.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentUS11509433B2Communication device and communication method

Publication Date: 2022.11.22 SONY GROUP CORP

AI summary

[Object] To provide a communication device that enables degradation in the quality of communication between a base station device and a terminal device to be avoided when a sidelink channel is set.[Solution] There is provided a communication device including: a control unit configured to allocate a predetermined gap to a boundary of a resource of a channel to be used in inter-device communication with a resource other than the resource of the channel in a communication system in which signals from different transmission sources are mixed and placed.