Millimeter Wave Connection Management via Preliminary Request Queuing

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Solution Overview

Problem

In millimeter wave communication, the number of user terminals that can simultaneously connect with a content delivery terminal is limited, leading to connection restrictions and increased waiting times for download requests.

Innovation Solution

Prioritizing connections for user terminals actively downloading content and initiating connections only upon actual download requests, while managing connections through a connection management system to optimize millimeter wave communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If each user terminal connects with the content delivery terminal when it enters the communication area, then the connection availability is improved, but the connection restriction probability increases due to limited simultaneous connections

Engineering Contradiction:
Improveconnection availabilityVSAvoidconnection restriction probability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system performs preliminary actions by having user terminals send download request signals before actually needing to connect for content delivery. The connection management apparatus receives and queues these requests in advance, so when a terminal enters the communication area, the connection is already authorized and can be established immediately without waiting for connection availability. This preliminary request submission resolves the contradiction by ensuring connection availability while managing the limited simultaneous connections through controlled authorization.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If user terminals wait for download request before connecting, then connection restriction probability is reduced, but the waiting time from download request to communication start increases

Engineering Contradiction:
Improveconnection restriction probabilityVSAvoidwaiting time for connection
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system applies preliminary action by having terminals submit download request signals in advance before actually entering the communication area or before the download is needed. The connection management apparatus queues these requests and prepares connection authorization beforehand. When the terminal enters the area and needs to connect, the connection is already authorized and can be established immediately, thus reducing both connection restriction probability and waiting time.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The connection management apparatus acts as an intermediary between user terminals and the content delivery terminal. It receives download request signals from terminals, manages the queue of requests, and controls connection authorization. This intermediary role allows the system to smooth out the timing between when terminals want to connect and when connections are available, reducing both connection restrictions and waiting times by coordinating access without requiring terminals to wait passively.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If all user terminals in the communication area are allowed to connect, then the ease of operation is improved, but the system complexity increases due to connection management overhead

Engineering Contradiction:
Improveconnection accessibilityVSAvoidconnection management overhead
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The connection management apparatus serves as an intermediary that automatically handles connection authorization based on received download request signals. Terminals simply send their requests and the intermediary manages the complex coordination of connections, authentication, and timing. This keeps the terminal design simple while the intermediary handles the management overhead, resolving the contradiction between ease of operation and system complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

User terminals autonomously send download request signals when they need content, without requiring manual connection management or complex terminal-side coordination. The terminals self-serve by initiating requests, and the system automatically processes these requests through the connection management apparatus. This self-service approach maintains ease of operation at the terminal level while the centralized management handles the complexity.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3561681B1Wireless communication device, connection management device, content distribution system, and wireless communication method
Publication Date: 2021.11.10 PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
  • EP3561681B1 patent drawingFigure 1~2
  • EP3561681B1 patent drawingFigure 3~4
  • EP3561681B1 patent drawingFigure 5~6

AI summary

A connectability determining unit 123 determines connectability over a millimeter wave band with respect to a content delivery apparatus 110a. When a determination result of the connectability is that connection is enabled, a request-signal generating unit 122 generates a connection request signal for requesting connection over a millimeter wave band, from when undownloaded content is selected until download of the selected undownloaded content is requested, and transmits the connection request signal to the content delivery apparatus 110a via a millimeter-wave wireless unit 121. A control unit 124 downloads the undownloaded content from the content delivery apparatus 110a via the millimeter-wave wireless unit 121.