Sidelink Receiver Indication for BWP Switching Continuity

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Solution Overview

Problem

Existing sidelink wireless communication systems face challenges in efficiently managing bandwidth part (BWP) switching and resource allocation, leading to interruptions and suboptimal performance in D2D (device-to-device) communications.

Innovation Solution

A method and system for coordinating BWP switching and resource allocation in sidelink wireless communications, utilizing techniques such as DC subcarrier coordination and dynamic modulation and coding schemes to enhance communication efficiency and reduce interruptions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If BWP switching is implemented in sidelink communications, then communication flexibility and adaptability are improved, but communication interruptions and reliability deteriorate

Engineering Contradiction:

ImproveBWP switching flexibilityVSAvoidcommunication reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies preliminary action by having the receiving wireless device send an indication of its receiver information (capabilities, current BWP state, buffer status) before the BWP switching occurs. This allows the transmitting device to plan and coordinate the BWP switching in advance, ensuring that the receiving device is ready to maintain communication continuity, thereby preventing interruptions while maintaining flexibility.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If resource allocation is optimized in sidelink communications, then communication efficiency is improved, but system complexity increases

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidresource allocation complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements feedback by having the receiving wireless device send receiver information (including buffer status, current resource allocation, and capability indications) back to the transmitting device. The transmitting device uses this feedback to dynamically adjust resource allocation and BWP configuration, optimizing communication efficiency while managing complexity through informed decision-making based on actual device states.

Inventive Principle:

Principle #23Feedback

3Reliability

If receiver information is indicated and coordinated, then communication reliability is improved, but signaling overhead increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The patent applies universality by designing the receiver information indication mechanism to serve multiple functions simultaneously: it conveys receiver capabilities, current BWP state, buffer status, and resource allocation information. This multi-functional approach consolidates multiple signaling requirements into a single coordinated message exchange, improving reliability while minimizing the increase in signaling overhead.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP3735075B1D2d sidelink wireless communications with indication of receiver information

Publication Date: 2026.01.07 COMCAST CABLE COMM LLC

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AI summary

Wireless communications for a side link are described. A wireless devices and/or a base stationmay determine at least one resource and/or time period for communications via a sidelink. The base station and/orthe wireless device may schedule side link communication, based on the determined resource(s) and/or time period(s), which may increase the likelihood of successful side link communications between wireless devices.