Wireless Bandwidth Allocation via OFDMA Merging
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Solution Overview
Problem
Wireless networks face inefficiencies due to unused bandwidth when only a portion of the channel is used for data transmission, leading to suboptimal utilization and reduced performance.
Innovation Solution
A networking device determines the bandwidth requirements for communications and allocates different portions of the bandwidth for each communication, combining packets with varying quality of service (QoS) priority levels to maximize channel usage by scheduling transmissions to occur simultaneously across multiple frequency allocations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single communication uses only a portion of the channel bandwidth, then the communication quality is maintained, but the network efficiency deteriorates due to unused bandwidth
Solution Approach 1:
The patent combines multiple communications with different QoS priority levels into a single transmission using OFDMA technology. Multiple packets are merged into one multi-device packet that can be transmitted simultaneously to multiple devices, thereby utilizing the entire channel bandwidth and eliminating unused capacity while maintaining quality of service differentiation.
Solution Approach 2:
The patent segments the channel bandwidth into multiple orthogonal frequency subcarriers that can be independently allocated to different devices. This segmentation allows the system to divide the bandwidth into portions assigned to different packets based on their QoS requirements, enabling efficient utilization of the entire spectrum while maintaining service quality.
2Productivity
If bandwidth is allocated to multiple communications simultaneously, then network efficiency is improved, but the complexity of bandwidth management increases
Solution Approach 1:
The patent changes the parameter of bandwidth allocation from traditional single-device assignment to multi-device simultaneous assignment using OFDMA. By transforming the allocation mechanism to support multiple devices with different QoS parameters on the same channel, the system achieves higher data transmission rates while the complexity is managed through standardized protocol parameters.
Solution Approach 2:
The patent implements feedback mechanisms where devices report their buffer status and QoS requirements, and the networking device adjusts bandwidth allocation accordingly. This feedback loop enables dynamic bandwidth management that adapts to changing network conditions, maintaining efficiency while managing complexity through automated control.
3Reliability
If transmissions are scheduled sequentially, then QoS priority levels are maintained, but latency increases due to waiting times
Solution Approach 1:
The patent enables continuous utilization of the channel by allowing multiple packets with different QoS priorities to be transmitted simultaneously through OFDMA. Instead of sequential transmission where lower priority packets must wait, the system maintains continuous useful action by filling the channel with multiple concurrent transmissions, thereby reducing latency while preserving QoS differentiation through frequency domain separation.
Data Source
AI summary
A networking device may determine that communications that is it receiving or sending to a computing device would not use all of the bandwidth of a channel when those communications are being sent or received. The networking device may determine other communications from the computing device or other computing devices to send communications to or from. The networking device may allocate different portions of the bandwidth for each of those communications to be sent or received by the networking device.