Multi-destination wireless transmitter directional antenna control

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Solution Overview

Problem

In wireless communication systems, especially at higher frequency bands like 60 GHz, omnidirectional transmissions become impractical due to limited range, failing to reach multiple destinations simultaneously without significant delay or interference.

Innovation Solution

Implementing a multi-destination control physical layer (PHY) mode that uses directional transmissions with multiple antennas or antenna sectors to simultaneously communicate with multiple devices, determining optimal antenna configurations and adding delays to prevent interference, allowing for extended range without the limitations of omnidirectional methods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If omnidirectional transmissions are used, then coverage area is improved, but transmission range and reliability deteriorate at higher frequency bands

Engineering Contradiction:

Improvecoverage areaVSAvoidtransmission range

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The patent segments the transmission approach by dividing multiple destination devices into different groups based on their spatial directions. Each group is transmitted to using different antenna sectors or beams, allowing the system to maintain directional transmission reliability while achieving omnidirectional coverage through multiple segmented transmissions.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a temporal dimension to the transmission process by performing serial directional transmissions to different groups of devices. Instead of attempting simultaneous omnidirectional transmission, the system transmits to different directional groups at different time intervals, effectively using time as an additional dimension to resolve the contradiction between coverage area and transmission reliability.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If serial directional transmissions are used, then transmission reliability is improved, but communication delay increases

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidcommunication delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by determining the directions and grouping of destination devices before actual data transmission. The system performs channel assessment and spatial classification in advance, so that when data needs to be transmitted, the directional groups are already identified and ready for immediate transmission, minimizing the time penalty of serial transmissions.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces dynamics by making the transmission sequence and group composition adaptive rather than fixed. The system dynamically determines which devices belong to which directional groups based on real-time channel conditions and spatial relationships, allowing optimal transmission scheduling that minimizes delay while maintaining reliability.

Inventive Principle:

Principle #15Dynamics

3Productivity

If simultaneous transmissions to multiple destinations are attempted, then communication efficiency is improved, but interference between transmissions increases

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidtransmission interference

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent applies local quality by assigning different spatial characteristics to transmissions directed at different destination groups. Each directional group receives transmissions optimized for its specific spatial direction and channel conditions, allowing simultaneous transmissions to proceed with reduced interference because each transmission is locally optimized for its target region rather than using a uniform omnidirectional approach.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent implements skipping by rapidly switching between different directional transmissions within time intervals that are short compared to channel variation timescales. This allows the system to effectively perform simultaneous multi-destination communication by rushing through sequential directional transmissions so quickly that they appear simultaneous, while avoiding interference through the speed of execution.

Inventive Principle:

Principle #21Skipping (Rushing through)

Data Source

PatentUS11483034B2Methods and apparatus for multi-destination wireless transmissions

Publication Date: 2022.10.25 INTEL CORP

AI summary

Methods and apparatus for multi-destination wireless transmissions as disclosed. An example multi-destination transmitter includes a direction determiner to determine directions for wireless transmission of data to destination devices and a transmission handler to: select a subset of the destination devices that are associated with different ones of a plurality of antennas as indicated by the directions determined by the direction determiner; and transmit the data to the subset of the destination devices via the plurality of antennas.