DMG Beacon RSS Signaling for Faster Wireless Discovery

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Solution Overview

Problem

Existing SLS sequences for wireless communication, such as A-BFT and CBAP-ISS, take too long to complete discovery, leading to increased time and potential interference in high-speed connection scenarios.

Innovation Solution

Implementing unsolicited RSS sequences during CBAP periods, allowing for quick discovery by enabling unsolicited CBAP-RSSs, reducing the need for full SLS sequences and minimizing interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional SLS sequences (A-BFT or CBAP-ISS) are used for discovery, then complete sector sweep and reliable connection can be achieved, but discovery time increases to 100 ms or more

Engineering Contradiction:

Improvediscovery completion reliabilityVSAvoiddiscovery time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The access point performs an unsolicited sector sweep and transmits beacon frames containing sector sweep information in advance, before any terminal initiates discovery. This preliminary action allows terminals to quickly acquire sector information without waiting for traditional SLS sequences, reducing discovery time while maintaining reliable connection establishment

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The invention skips the traditional time-consuming SLS sequence by allowing terminals to directly use the sector sweep information obtained from beacon frames. This rushing through of the discovery process eliminates unnecessary delays while still achieving complete sector identification and reliable connection

Inventive Principle:

Principle #21Skipping (Rushing through)

2Measurement precision

If traditional SLS sequences are used, then thorough sector identification is achieved, but communication interference increases due to extended discovery duration

Engineering Contradiction:

Improvesector identification accuracyVSAvoidcommunication interference

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The access point performs sector sweep and transmits beacon frames with sector information in advance, allowing terminals to quickly identify sectors without prolonged discovery processes. This reduces the time window for potential interference while maintaining accurate sector identification

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The invention rushes through the discovery process by eliminating the need for traditional SLS sequences, thereby reducing the duration of potential interference in the communication channel while still achieving thorough sector identification through the pre-transmitted beacon frame information

Inventive Principle:

Principle #21Skipping (Rushing through)

Data Source

PatentEP3641360B1Wireless communication device and wireless communication method

Publication Date: 2025.09.17 PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA

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AI summary

In a case where an A-BFT period is not present in a BI, a PCP/AP uses a format that includes an Unsolicited RSS Enabled sub-field for indicating support for responding to unsolicited RSSs within a CBAP, for a Beacon Interval Control field of a DMG beacon frame used for executing a BTI-ISS. For example, in a case where it is indicated that responding to unsolicited RSSs within a CBAP is supported, the PCP/AP sets the value of the Unsolicited RSS Enabled sub-field to 1. In a case where the value of the Unsolicited RSS Enabled sub-field included in a received DMG beacon frame is 1, a STA responds with an unsolicited CBAP-RSS.