Communication device, communication method, and program

The introduction of a U-SIG in wireless frames addresses the lack of bandwidth notification in existing standards, enabling efficient communication and power savings by supporting multiple IEEE 802.11 standards with adaptable bandwidths.

JP7864570B2Active Publication Date: 2026-05-25CANON KK
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
CANON KK
Filing Date
2022-07-01
Publication Date
2026-05-25

AI Technical Summary

Technical Problem

Existing wireless LAN standards lack a mechanism to efficiently notify communication devices about the use of frequency bandwidths exceeding 320 MHz, especially when devices support both older and newer standards, leading to inefficiencies in bandwidth communication.

Method used

A communication device is equipped with a transmitting means that includes a Universal Signal Field (U-SIG) in the wireless frame preamble, which contains a PHY Version Identifier Field and a Bandwidth Field, allowing it to transmit frames with bandwidths greater than 320 MHz, and supports both older and newer IEEE 802.11 standards.

Benefits of technology

Enables efficient communication of bandwidth information using the U-SIG, allowing devices to adapt transmission bandwidths based on supported standards, thereby enhancing interoperability and reducing power consumption by terminating unsupported frame reading.

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Abstract

To provide a mechanism for communicating bandwidth information that corresponds to a standard using the Universal Signal Field (U-SIG) of a radio frame when a communications device supports both older generation and newer standards.SOLUTION: A communication device can transmit a radio frame with 0 specified for a PHY Version Identifier Field in the U-SIG of a preamble and a radio frame with 1 specified for the PHY Version Identifier Field. The communication device stores 1 for the PHY Version Identifier Field. The transmitting means transmits a radio frame using a bandwidth greater than 320 Mhz when transmitting a radio frame with a value greater than 6 stored in the Bandwidth Field.SELECTED DRAWING: Figure 4
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