Multi-radio WLAN Device Multiplexing OFDM Subcarriers
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Solution Overview
Problem
Current wireless local area networks (WLANs) face limitations in efficiently transmitting data packets over multiple radio pathways, particularly in utilizing orthogonal frequency division multiplexing (OFDM) subcarriers across different frequency bands, which affects throughput and bandwidth utilization.
Innovation Solution
The system multiplexes information onto multiple radio pathways to generate data packets using OFDM subcarriers assigned to different frequency bands, allowing concurrent transmission of packet portions across these bands, thereby enhancing bandwidth utilization and throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is transmitted using a single radio pathway in WLAN, then device complexity is reduced, but single-user throughput is limited
Solution Approach 1:
The patent segments a single data stream into multiple parallel data streams, which are then transmitted over multiple radio pathways simultaneously. Each radio pathway processes its own segment independently, allowing concurrent transmissions that multiply the effective throughput without requiring each individual radio pathway to be more complex.
Solution Approach 2:
The patent combines multiple radio pathways into a unified transmission system where multiple data streams are aggregated and transmitted concurrently. The receiver merges these parallel streams back into a single data flow, achieving throughput multiplication while maintaining manageable complexity at each individual radio unit.
2Productivity
If multiple radio pathways are used for concurrent transmission, then bandwidth utilization increases, but interference between pathways worsens
Solution Approach 1:
The patent transitions from single-dimension sequential transmission to multi-dimensional parallel transmission by utilizing multiple radio pathways simultaneously. This dimensional expansion allows the system to achieve higher bandwidth utilization by operating in parallel channels rather than sequentially, effectively multiplying the available transmission capacity.
3Loss of time
If data streams are processed sequentially through a single decoder, then device complexity is reduced, but processing time increases
Solution Approach 1:
The patent segments the decoding process into multiple parallel decoders, each handling a specific data stream independently. This segmentation allows simultaneous decoding of multiple streams, dramatically reducing total processing time compared to sequential decoding, while each individual decoder maintains manageable complexity.
Solution Approach 2:
The patent employs multiple decoders that can be configured to handle different modulation schemes and data rates. These decoders serve universal functions across multiple radio pathways, providing flexible processing capabilities without requiring overly complex universal decoding hardware for each pathway.
Data Source
AI summary
The present disclosure includes systems and techniques relating to wireless local area network devices. Systems and techniques include accessing a data stream intended for transmission to a single wireless communication device, multiplexing the data stream onto two or more radio pathways to produce a data packet, operating the two or more radio pathways to respectively use two or more groups of orthogonal frequency division multiplexing (OFDM) subcarriers to generate two or more different portions of the data packet, the two or more groups of OFDM subcarriers being respectively assigned to two or more frequency bands, and transmitting the data packet to the single wireless communication device by concurrent transmissions of the two or more different portions via the two or more frequency bands.