Multi-generation PPDU Preamble Segmentation for WLAN Protocol Compatibility
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Solution Overview
Problem
Current wireless local area network (WLAN) technologies face challenges in seamlessly supporting multiple generations of IEEE 802.11 communication protocols, leading to limitations in channel bandwidth and resource unit (RU) allocation flexibility, which hinders efficient communication across different wireless communication protocols.
Innovation Solution
The implementation of a multi-generation physical layer protocol data unit (PPDU) that combines generation-specific preambles in different subchannels of a wireless channel, allowing for concurrent transmission of data formatted according to various IEEE 802.11 protocols, including IEEE 802.11ax and IEEE 802.11be, within a single wireless packet, enabling flexible RU allocation and supporting simultaneous communication with devices using different generations of protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single generation of WLAN protocol is used, then device complexity is reduced, but adaptability to support multiple protocol generations deteriorates
Solution Approach 1:
The wireless channel is divided into multiple subchannels, with each subchannel carrying preambles for different protocol generations. This segmentation allows the system to simultaneously support multiple protocols without requiring all devices to process all protocol types, thereby improving adaptability while managing complexity through division of labor.
Solution Approach 2:
The wireless packet structure is designed to be universal by incorporating preambles from multiple protocol generations within a single packet. This multi-functionality enables the system to serve devices of different protocol generations simultaneously, enhancing protocol compatibility without requiring separate communication channels for each protocol.
2Productivity
If channel bandwidth is increased to support higher data rates, then productivity improves, but compatibility with older protocols deteriorates
Solution Approach 1:
The channel bandwidth is segmented into multiple subchannels, allowing the system to transmit high-rate data on wider subchannels while maintaining compatibility with older protocols on narrower subchannels. This segmentation enables the system to achieve high productivity through aggregated bandwidth while preserving protocol compatibility across different generations.
Solution Approach 2:
Different subchannels are assigned different quality characteristics tailored to specific protocol requirements. Wider subchannels support higher data rates for newer protocols, while narrower subchannels maintain compatibility with older protocols. This local quality differentiation allows the system to optimize performance for each protocol type simultaneously.
3Adaptability or versatility
If resource unit allocation is made flexible to accommodate different protocols, then adaptability improves, but device complexity increases
Solution Approach 1:
The resource allocation framework is segmented by protocol generation, with each subchannel managing resources for specific protocols independently. This segmentation provides flexible resource allocation for different protocols while reducing overall device complexity by allowing each protocol to manage its own resources without interfering with others.
Solution Approach 2:
The patent introduces a new dimension of resource management by organizing resources not just by time or frequency, but by protocol generation layers. This dimensional approach to resource allocation enables flexible adaptation to different protocols while simplifying management through hierarchical organization of resource units across multiple dimensions.
Data Source
AI summary
This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for generating or receiving a wireless packet that includes a first preamble based on a first generation of a wireless communication protocol and a second preamble based on a second generation of the wireless communication protocol. The wireless packet may include the first preamble in a first subchannel of a wireless channel and the second preamble in a second subchannel of the wireless channel. Thus, the wireless packet may concurrently include communication to or from different types of wireless stations that support the different generations of a wireless communication protocol.