Communication Device Channel Segmentation for Coordinated WLAN Transmission

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Solution Overview

Problem

In wireless communication systems, the use of coordinated transmission by multiple access points on the same frequency channel leads to throughput deterioration and reduced frequency utilization efficiency due to interference from adjacent basic service sets operating on the same frequency channel.

Innovation Solution

A communication device and method that dynamically sets and controls separate frequency channel groups for coordinated transmission and host network communication, ensuring that the host network's throughput is maintained by using distinct channel groups for coordinated transmission and host communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If coordinated transmission is performed using the same frequency channel, then data transmission capability is improved, but frequency utilization efficiency deteriorates due to interference from adjacent basic service sets

Engineering Contradiction:
Improvedata transmission capabilityVSAvoidfrequency utilization efficiency
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The frequency channel is segmented into two distinct groups: a first frequency channel group dedicated for coordinated transmission and a second frequency channel group for host network communication. This segmentation allows coordinated transmission to occur without interfering with host network operations, resolving the contradiction between improved data transmission capability and maintained frequency utilization efficiency

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces a new dimension in frequency channel management by creating separate frequency domains for different transmission purposes. Instead of using a single frequency channel for both coordinated transmission and host network communication, the system operates in multiple frequency dimensions simultaneously, eliminating interference while maintaining both functions

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If the same frequency channel is used by adjacent basic service sets, then frequency resource utilization is improved, but throughput deteriorates due to mutual interference

Engineering Contradiction:
Improvefrequency resource utilizationVSAvoidthroughput
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

The frequency channel is divided into separate groups for coordinated transmission and host network communication, allowing each to operate independently without mutual interference. This enables high frequency resource utilization while maintaining high throughput for both functions simultaneously

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system dynamically allocates and switches between the first and second frequency channel groups based on operational requirements. This dynamic management allows the system to adapt to different transmission scenarios while maintaining optimal throughput and frequency utilization efficiency

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12369144B2Communication device and communication method
Publication Date: 2025.07.22 SONY GROUP CORP
  • US12369144B2 patent drawing
  • US12369144B2 patent drawing
  • US12369144B2 patent drawing

AI summary

The present technology relates to a communication device and a communication method capable of curbing deterioration of frequency utilization efficiency. A communication device including a control unit configured to set a first frequency channel group used at the time of simultaneously transmitting data in cooperation with another communication device constituting another network, to set a second frequency channel group used for communication in a host network, and to dynamically control bandwidths of frequency bands in the first frequency channel group and the second frequency channel group is provided. The present technology can be applied to, for example, a wireless LAN system.