Relay Device Prioritization for Wireless Resource Allocation

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Solution Overview

Problem

Wireless communication systems face challenges in prioritizing multiple concurrent relayed communications and ensuring reliable resource allocation, leading to potential starvation of relaying resources for some source devices, especially in scenarios with varying quality of service requirements.

Innovation Solution

The implementation of scheduled resource grants with associated relaying parameters and energy harvesting parameters, such as time-switching and power-splitting configurations, allows relay devices to prioritize communications based on defined priorities and efficiently allocate resources, including using amplify-and-forward, decode-and-forward, or compress-and-forward relaying types.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple concurrent relayed communications are supported without prioritization, then communication coverage and connectivity are improved, but resource allocation reliability deteriorates leading to starvation of relaying resources

Engineering Contradiction:

Improvecommunication coverageVSAvoidresource allocation reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent segments relayed communications into different priority levels (first priority and second priority), allowing the relay device to differentiate and allocate resources accordingly. This segmentation enables high-priority communications to receive guaranteed resources while low-priority communications use remaining resources, resolving the contradiction between supporting multiple communications and ensuring reliable resource allocation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces priority parameters associated with scheduled resource grants to change the resource allocation behavior. By assigning different priority levels to different communications, the system dynamically adjusts resource allocation based on communication importance, preventing resource starvation while maintaining adaptability for multiple concurrent communications.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If scheduled resource grants are allocated without priority differentiation, then ease of operation is improved, but communication reliability deteriorates due to resource starvation

Engineering Contradiction:

Improveresource allocation simplicityVSAvoidcommunication reliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent applies preliminary action by pre-configuring priority levels and associated relay parameters for different scheduled resource grants before communications occur. The relay device is pre-instructed on which communications have higher priority, enabling automatic reliable resource allocation without complex real-time decisions, thus maintaining ease of operation while improving reliability.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If relay parameters are configured for each scheduled resource grant, then communication reliability is improved through prioritization, but device complexity increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidrelay parameter configuration complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent creates a universal priority mechanism where scheduled resource grants are associated with priority levels that can be applied across multiple communications. The relay parameters including priority indicators can be configured through standard control signaling, making the system multi-functional for different communication types without proportionally increasing complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250016767A1Configuration and signaling techniques for scheduled wireless communications

Publication Date: 2025.01.09 QUALCOMM INC

AI summary

Methods, systems, and devices for wireless communications are described for relaying communications from a source device to a destination device via one or more relay devices. Scheduled resource grants may be used to provide resources for the relayed communications, and may provide one or more associated relaying parameters for relayed communications. A source device and relay device may use parameters to determine a relaying priority for multiple communications that are to be relayed. Additionally or alternatively, scheduled resource grants may include energy harvesting (EH) parameters for communications that use the scheduled resources. The EH parameters may include, for example, time-switching energy harvesting parameters that configure a first subset of symbols for data and a second subset of symbols for EH, or power-splitting EH where power of a received signal is split between EH components and decoding components.