Relay Partial Decoding ACK/NACK Feedback Mechanism

Solution Overview

Problem

Wireless communication systems lack efficient procedures for relay nodes to receive acknowledgment (ACK) or negative acknowledgment (NACK) feedback from receiver nodes when performing partial decoding, which hinders the improvement of communication relay performance and decoding speed.

Innovation Solution

Implementing methods for wireless nodes to transmit packets containing information associated with partial decoding of data and receive ACK/NACK feedback, allowing receiver nodes to report feedback to relay nodes that perform partial decoding, thereby enhancing communication efficiency and decoding complexity reduction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If relay nodes perform partial decoding of data, then decoding latency is reduced and processing speed is improved, but the ability to receive and process ACK/NACK feedback from receiver nodes is hindered

Engineering Contradiction:

Improvedecoding speedVSAvoidfeedback reception capability

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The feedback mechanism is segmented into two distinct types: first ACK/NACK feedback for the packet containing partial decoding information, and second ACK/NACK feedback for the original data. This segmentation allows the relay node to separately manage and process feedback related to partial decoding operations, enabling efficient handling of both decoded and undecoded data portions without compromising overall feedback reception capability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The relay node performs partial decoding of the data rather than complete decoding, which reduces processing latency and speeds up the feedback loop. By applying partial action (partial decoding), the system achieves faster processing while still maintaining the ability to receive and handle both types of ACK/NACK feedback, thus resolving the contradiction between speed and reliability

Inventive Principle:

Principle #16Partial or excessive action

2Loss of information

If relay nodes perform full decoding of data, then complete data understanding is achieved, but decoding complexity and processing time increase

Engineering Contradiction:

Improvedata comprehension completenessVSAvoiddecoding complexity

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The relay node performs partial decoding of the data rather than complete decoding, which reduces processing latency and speeds up the feedback loop. By applying partial action (partial decoding), the system achieves faster processing while still maintaining the ability to receive and handle both types of ACK/NACK feedback, thus resolving the contradiction between speed and reliability

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The patent introduces an intermediary mechanism where the relay node can forward packets containing partial decoding information to the receiver node. This intermediary approach allows the receiver node to perform its own decoding operations on the original data while the relay node handles partial processing, distributing the decoding complexity and reducing the burden on any single node

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11799590B2Hybrid automatic repeat request procedures for a relay using partial decoding

Publication Date: 2023.10.24 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless node may receive, from a first wireless node, data that is for a second wireless node; transmit, to the second wireless node, a packet that contains information associated with partial decoding of the data; and receive, from the second wireless node, at least one of first acknowledgment or negative acknowledgement (ACK/NACK) feedback for the packet or second ACK/NACK feedback for the data. Numerous other aspects are provided.