Bluetooth Packet Polar Encoding for Anti-Interference Reception

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Solution Overview

Problem

Bluetooth systems suffer from poor anti-interference capability due to insufficient forward error correction (FEC) performance, particularly in BR/EDR and LE physical layers, which affects error correction and coverage area.

Innovation Solution

Extend the standard Bluetooth baseband protocol to support polar encoding/decoding, enabling differentiated protection of data bits based on importance, thereby improving anti-interference capability and reception sensitivity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If standard Bluetooth encoding is used, then device compatibility is maintained, but error correction performance is insufficient

Engineering Contradiction:

Improveerror correction performanceVSAvoidprotocol compatibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent changes the encoding parameter from standard Bluetooth encoding to polar encoding, achieving superior error correction performance while maintaining protocol compatibility through extended packet formats and negotiation mechanisms

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent segments the Bluetooth protocol into multiple layers, adding polar encoding capability at the physical layer while keeping higher layers compatible with standard protocols, allowing gradual adoption and coexistence

Inventive Principle:

Principle #1Segmentation

2Reliability

If forward error correction is added to all data packets, then anti-interference capability is improved, but processing complexity increases

Engineering Contradiction:

Improveanti-interference capabilityVSAvoidprocessing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies polar encoding selectively to specific data packets based on their importance and channel conditions, rather than uniformly to all packets, optimizing the balance between reliability and complexity

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent implements partial FEC by applying error correction only to critical data packets where it provides the most benefit, avoiding the overhead of processing all packets with full FEC

Inventive Principle:

Principle #16Partial or excessive action

3Reliability

If polar encoding is implemented, then reception sensitivity is improved, but device compatibility with standard Bluetooth protocols is reduced

Engineering Contradiction:

Improvereception sensitivityVSAvoidprotocol compatibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent designs the extended Bluetooth packet format to be universally compatible, allowing both standard and polar-encoded packets to coexist in the same system through negotiation and identification fields

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces negotiation mechanisms and identification fields as intermediaries that enable devices to agree on using polar encoding before communication, ensuring compatibility while enabling advanced features

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12531655B2Method for processing Bluetooth data packet and communication apparatus

Publication Date: 2026.01.20 HUAWEI TECH CO LTD

AI summary

A Bluetooth data packet processing method is disclosed. According to the Bluetooth data packet processing method, a standard Bluetooth baseband protocol is extended, so that a Bluetooth node can also support polar encoding/decoding based on compatibility with the standard Bluetooth protocol. When processing a Bluetooth data packet, the Bluetooth node may choose to perform polar encoding on the data packet by using an extended Bluetooth baseband protocol, to improve demodulation performance of a Bluetooth receiver, and improve an anti-interference capability of a Bluetooth system.