4G Wireless Network OFDMA Bandwidth Allocation

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Solution Overview

Problem

Existing wireless communication networks are inadequate for simultaneous transmission of voice and broadband data, such as streaming video, due to network congestion and lack of a suitable transmission path configuration, which limits the implementation of wireless videophone services.

Innovation Solution

The development and implementation of a 4G wireless network using IEEE 802.16 specifications, employing Orthogonal Frequency Division Multiple Access (OFDMA) technology, which allows dynamic bandwidth allocation and simultaneous support for voice, data, and real-time streaming video exchange between wireless terminals, including mobile and fixed devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If existing wireless communication networks are used for voice communication, then voice transmission is supported, but broadband data transmission such as streaming video cannot be simultaneously supported due to network congestion

Engineering Contradiction:

Improvebandwidth capacityVSAvoidnetwork congestion

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The patent implements dynamic bandwidth allocation in the 4G network using OFDMA technology, where bandwidth resources are dynamically assigned and reconfigured based on real-time service requirements. The network can switch between different bandwidth configurations to accommodate varying demands for voice and broadband data transmissions, resolving the contradiction between maintaining voice service reliability and increasing broadband capacity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the network's operational parameters by introducing 4G technology with OFDMA, which fundamentally alters the bandwidth allocation mechanism from static to dynamic. This parameter change enables the network to simultaneously support both voice and broadband services by adjusting frequency and time resources according to service priorities, eliminating network congestion while maintaining adequate bandwidth for all services.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If separate networks are used for voice and broadband data, then each network can be optimized for its specific function, but a unified transmission path for simultaneous voice and video exchange cannot be achieved

Engineering Contradiction:

Improveservice specializationVSAvoidnetwork configuration

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent creates a universal 4G network infrastructure that can simultaneously perform multiple functions: voice communication, broadband data transmission, and real-time video exchange. The OFDMA technology enables a single network to adapt its resource allocation to support different service types, eliminating the need for separate specialized networks while maintaining service optimization through dynamic resource management.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges previously separate voice and broadband networks into a unified 4G network platform. By combining network infrastructure and resource pools, the system achieves simplified configuration while maintaining the ability to handle diverse service requirements through intelligent resource allocation and dynamic bandwidth configuration.

Inventive Principle:

Principle #5Merging (Combining)

3Productivity

If 4G network with dynamic bandwidth allocation is implemented, then simultaneous voice and broadband data transmission is enabled, but new network infrastructure and technology are required

Engineering Contradiction:

Improvedata transmission efficiencyVSAvoidnetwork infrastructure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent replaces traditional static network infrastructure with a dynamic 4G system based on OFDMA technology. This substitution introduces intelligent resource allocation mechanisms that automatically adjust bandwidth distribution based on service demands, significantly improving data transmission efficiency and enabling simultaneous voice and broadband services without requiring physically separate network infrastructures.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS7948513B2Teleconferencing between various 4G wireless entities such as mobile terminals and fixed terminals including laptops and television receivers fitted with a special wireless 4G interface

Publication Date: 2011.05.24 ROCKEFELLER ALFRED G

AI summary

A method for providing a videoconferencing service between two fourth generation wireless terminal types including cellular or wireless mobile and fixed terminals, said fixed terminals to include television receivers with a 4G wireless interface, each terminal employing a video camera, a microphone and loudspeaker. All terminal types will be rendered parametrically compatible by use of subscriber tables which identify called terminal parameters and which contain a class of service sequence which identifies the originating terminal's parameters wherein said class of service sequence is sent to the receiving terminal in an alternate caller ID along with selection characters which cause direct routing to the receiving terminal. The called subscriber may opt out of a video send mode by sending a “canned” video frame advising the caller that video is not available.