WLAN MIMO Throughput via Segmented Antennas and Mode Selection

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Solution Overview

Problem

Current wireless local area networks (WLANs) face challenges in achieving high data throughput while maintaining backward compatibility with legacy devices, which limits their ability to efficiently support advanced communication standards like MIMO.

Innovation Solution

The development of a WLAN device that employs multiple-input multiple-output (MIMO) technology, incorporating advanced baseband processing and radio frequency (RF) transmitter and receiver designs, enabling high data throughput while ensuring compatibility with older standards through mode selection signals and adaptive encoding techniques.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If MIMO technology and advanced baseband processing are implemented to achieve high data throughput, then data throughput rate is improved, but device complexity increases

Engineering Contradiction:
Improvedata throughput rateVSAvoiddevice complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the wireless communication system into multiple independent transmit and receive antennas, each handling separate data streams. This segmentation allows MIMO technology to achieve high throughput by parallelizing communication paths while keeping individual antenna implementations relatively simple and modular.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements mode selection signals that enable the WLAN device to operate in multiple modes (legacy compatibility mode and MIMO mode). This multi-functionality allows the same hardware infrastructure to serve both advanced high-throughput applications and legacy device compatibility, resolving the contradiction between improved productivity and increased complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Productivity

If MIMO technology is implemented to support advanced communication standards, then data throughput rate is improved, but compatibility with legacy devices deteriorates

Engineering Contradiction:
Improvedata throughput rateVSAvoidcompatibility with legacy devices
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent employs dynamic mode selection where the WLAN device can adaptively switch between legacy compatibility mode and MIMO mode based on the communication partner's capabilities. This dynamic adaptability ensures high throughput when communicating with advanced devices while maintaining compatibility with legacy devices, thus resolving the contradiction between improved productivity and adaptability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes operational parameters (such as enabling/disabling MIMO modes, adjusting encoding schemes) based on the detected capability of communicating devices. By modifying these parameters dynamically, the system achieves high throughput with MIMO when appropriate while falling back to legacy modes for compatibility, thereby resolving the contradiction between productivity and adaptability.

Inventive Principle:
Principle #35Parameter changes

3Productivity

If advanced baseband processing and RF transmitter/receiver designs are used to achieve high data throughput, then productivity is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvedata throughput rateVSAvoidmanufacturing complexity
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The patent divides the complex baseband processing and RF functions into separate modular components associated with each antenna element. This segmentation allows for standardized manufacturing of individual antenna modules that can be assembled into multi-antenna MIMO systems, reducing overall manufacturing complexity while maintaining high throughput capabilities.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS9281928B2Range extension within single user, multiple user, multiple access, and/or MIMO wireless communications
Publication Date: 2016.03.08 AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE LTD
  • US9281928B2 patent drawing
  • US9281928B2 patent drawing
  • US9281928B2 patent drawing

AI summary

Range extension within single user, multiple user, multiple access, and/or MIMO wireless communications. A given communication device designed and implemented for operation in accordance with a given communication protocol, standard, and/or recommended practice operates in accordance with a down-clocked manner to effectuate operation in accordance with at least one other communication protocol, standard, and/or recommended practice. For example, first channelization may undergo down-clocking by a particular and desired ratio to generate a second channelization. As such, at least one portion of a physical layer (PHY) of a given communication device may be leveraged for use in at least one other or additional operational mode based upon the down-clocking employed. Sub-channel and/or channel adaptation may be made based upon any of a number of considerations (e.g., independently by one device, cooperatively by two or more devices, local and/or remote operating condition(s) [or changes thereof], etc.).