Wi-Fi Beam Training Within Service Periods for 60 GHz Links

Solution Overview

Problem

The high propagation loss in the 60 GHz band hinders the widespread adoption of Wi-Fi communications, leading to inefficient use of communication resources, increased power consumption, and delayed communications due to unnecessary beam training procedures.

Innovation Solution

Wireless devices perform beam training procedures within service periods (SPs) using initiating and response frames to determine the need for new beam training, adjusting transmit and receive beams based on response frames or channel conditions, enabling efficient and reliable communications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If beam training procedures are performed for every service period, then communication reliability is improved, but time consumption and resource waste increase

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidtime consumption

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent performs beam training procedures in advance during beacon intervals rather than requiring them for every service period. By establishing beam alignment beforehand, the system reduces the need for repeated beam training during actual data transmission, thus improving reliability while reducing time consumption.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements periodic beam training during beacon intervals rather than continuous beam training for every service period. This periodic approach maintains communication reliability through regular beam alignment updates while significantly reducing overall time consumption by skipping unnecessary beam training during service periods when beams remain stable.

Inventive Principle:

Principle #19Periodic action

2Reliability

If beam training procedures are performed for every service period, then communication reliability is improved, but power consumption increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by stationary object

Solution Approach 1:

The patent performs beam training procedures in advance during beacon intervals rather than requiring them for every service period. By establishing beam alignment beforehand, the system reduces the need for repeated beam training during actual data transmission, thus improving reliability while reducing power consumption.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements periodic beam training during beacon intervals rather than continuous beam training for every service period. This periodic approach maintains communication reliability through regular beam alignment updates while significantly reducing power consumption by skipping unnecessary beam training during service periods when beams remain stable.

Inventive Principle:

Principle #19Periodic action

3Reliability

If beam training procedures are performed for every service period, then communication reliability is improved, but communication speed decreases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidcommunication speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent performs beam training procedures in advance during beacon intervals rather than requiring them for every service period. By establishing beam alignment beforehand, the system reduces the need for repeated beam training during actual data transmission, thus improving reliability while increasing communication speed.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements periodic beam training during beacon intervals rather than continuous beam training for every service period. This periodic approach maintains communication reliability through regular beam alignment updates while significantly increasing communication speed by eliminating time-consuming beam training during data transmission periods.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS20250357979A1Beam training techniques in WIFI frequency bands

Publication Date: 2025.11.20 QUALCOMM INC

AI summary

Methods, systems, and devices for wireless communications are described. A first wireless device (e.g., station (STA), access point (AP)) may transmit to a second wireless device during a service period, an initiating frame using a transmit beam that is based on a first beam training procedure performed between the devices prior to the service period. The first wireless device may perform a second beam training procedure during the service period based on an absence of a response frame from the second wireless device, based on an indication within the response frame received from the second wireless device, or based on identification of a change in a wireless channel relative to a previous beam training interval or previous service period. The first wireless device may then communicate one or more messages with the second wireless device using one or more beams that are based on the second beam training procedure.