Interconnect Data Request Compression Using Persistent Frame Data

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Solution Overview

Problem

In communication channel interconnects like chip-to-chip and die-to-die connections, bandwidth is limited due to the transmission of duplicate information across multiple frames, leading to wasted bandwidth and increased latency.

Innovation Solution

Implementing a persistent data component that extracts and reinserts persistent data within frames, using identifiers to reduce redundant data transmission and increase bandwidth efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If data is transmitted across a datalink in multiple frames, then data transfer is facilitated, but bandwidth is wasted due to duplicate information in each frame

Engineering Contradiction:

Improvedata transfer efficiencyVSAvoidbandwidth utilization

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The patent extracts persistent data (originator ID, destination ID, tag) from each frame and stores it in a persistent data structure at the transmitting device. Only the data payload is transmitted in subsequent frames after the initial full frame, reducing redundant data transmission and improving bandwidth utilization.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent creates a copy of the persistent data structure at the receiving device that mirrors the transmitter's persistent data structure. This allows the receiver to reconstruct complete frames from compressed transmissions by combining received payloads with local persistent data, eliminating the need to retransmit duplicate identification information.

Inventive Principle:

Principle #26Copying

2Reliability

If complete frames are transmitted each time, then data integrity is maintained, but frame size is large and latency increases

Engineering Contradiction:

Improvedata integrityVSAvoidlatency

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent segments the frame transmission into two parts: an initial complete frame that establishes the persistent data context, and subsequent frames that transmit only the data payload. This segmentation maintains data integrity through the persistent data structure while reducing latency in subsequent transmissions by eliminating redundant header information.

Inventive Principle:

Principle #1Segmentation

3Loss of energy

If persistent data is extracted and stored, then bandwidth is improved, but device complexity increases

Engineering Contradiction:

Improvebandwidth efficiencyVSAvoiddata structure management

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The persistent data structure serves multiple functions: it stores identification information for bandwidth compression, provides context for reconstructing compressed frames at the receiver, and maintains data integrity across multiple transmissions. This multi-functionality justifies the added complexity by delivering significant bandwidth efficiency gains.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20260064617A1Increasing bandwidth over a communication channel interconnect with data request modification

Publication Date: 2026.03.05 NVIDIA CORP

AI summary

A includes a memory and one or more processing devices operatively coupled to the memory. The one or more processing devices to determine that a data request comprises first persistent data, remove the first persistent data from the data request to obtain first dynamic data, generate first modification data representing the first persistent data, combine the first dynamic data and first modification data to obtain a first modified data request, and cause the first modified data request to be transmitted to a second device over a communication link.