Ethernet Block Sequence Rate Adaptation for False Packet Detection

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Solution Overview

Problem

Existing Ethernet technologies face inefficiencies in bandwidth allocation and rate adaptation, particularly for services with non-5 Gbps granularity, leading to errors during transmission of idle blocks, which affect the mean time to false packet acceptance (MTTFPA) indicator.

Innovation Solution

A communication method and device that adjusts bandwidth by adding or deleting multiple preset blocks from a block sequence based on rate adaptation and frequency offset requirements, allowing the receiver to identify transmission exceptions and reduce false packet acceptance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If idle blocks are added or deleted for rate adaptation, then bandwidth adjustment is achieved, but transmission errors occur and false packets are accepted

Engineering Contradiction:

Improvebandwidth adjustment capabilityVSAvoidtransmission reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

A checksum field is introduced as an intermediary mechanism in the block sequence. This checksum serves as a mediator that verifies the integrity of idle blocks during rate adaptation operations, preventing false packet acceptance while maintaining bandwidth adjustment capability

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The checksum mechanism provides feedback verification for transmitted blocks. By calculating and verifying checksums of idle blocks, the system can detect transmission errors and prevent false packets from being accepted, thereby improving transmission reliability during rate adaptation

Inventive Principle:

Principle #23Feedback

2Adaptability or versatility

If single idle blocks are used for rate adaptation, then bandwidth granularity is flexible, but error detection capability is insufficient

Engineering Contradiction:

Improvebandwidth granularity flexibilityVSAvoiderror detection precision

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The block sequence is segmented into multiple blocks with individual checksums. This segmentation allows each block to be independently verified for errors while maintaining the overall flexibility of bandwidth allocation through multiple fine granularity slots

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The mechanical approach of relying solely on block counting for error detection is replaced with a checksum-based verification system. This substitution provides more precise error detection capability while preserving the flexible bandwidth granularity provided by fine granularity slots

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12580675B2Communication method and device, and chip system

Publication Date: 2026.03.17 HUAWEI TECH CO LTD

AI summary

A communication method includes, when a rate adaptation or a frequency offset adjustment is performed on a first block sequence, a quantity of first preset blocks that are added or deleted is one of one or more preset values. In this way, a receive end may determine, based on whether the quantity of first preset blocks in the received first block sequence is a preset value, whether an exception occurs in the first preset block during transmission. Based on this, a false packet can be accepted as a correct packet less frequently, thereby improving a mean time to false packet acceptance (MTTFPA) indicator.