Multi-mode Radio Encapsulating PAN Data in WLAN Frames
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Solution Overview
Problem
Personal area networks face challenges in securely transmitting communication data over distances that existing technologies do not readily support, requiring secure and efficient methods for data transport.
Innovation Solution
The implementation of multi-mode communication devices that can establish and manage communication links using both wireless local area network protocols (such as IEEE 802.11) and personal area network protocols (like Bluetooth) concurrently, enabling secure peer-to-peer communications and data encryption using secure keys generated through simple pairing procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If personal area network data is transmitted over longer distances, then transmission range is improved, but security and reliability deteriorate
Solution Approach 1:
The patent implements nested data encapsulation where PAN data packets are wrapped inside WLAN frames. The PAN data is encapsulated within the WLAN protocol structure, allowing secure transmission over longer distances while maintaining security through the WLAN encryption mechanisms. This nesting approach enables the system to leverage the broader range of WLAN while preserving PAN security characteristics.
Solution Approach 2:
The patent introduces an intermediary encapsulation layer that mediates between PAN data and WLAN transmission. This intermediary structure (the encapsulation protocol) translates and secures PAN data for WLAN transmission, enabling secure long-distance communication by combining the security of PAN with the range of WLAN through the intermediary encapsulation mechanism.
2Adaptability or versatility
If multiple communication protocols are supported concurrently, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal communication interface that handles multiple protocols (PAN and WLAN) through a unified encapsulation mechanism. The baseband processor and radio processor work together to manage both protocols using common processing resources, allowing the device to perform multiple communication functions without requiring separate dedicated processing paths for each protocol.
Solution Approach 2:
The patent segments the communication processing into distinct functional layers: PAN data processing, encapsulation processing, and WLAN transmission processing. This segmentation allows each protocol to be handled independently through modular processing stages, reducing overall system complexity while maintaining multi-protocol capability. The encapsulation layer acts as a separator that manages the interface between different protocol stacks.
Data Source
AI summary
An integrated circuit radio transceiver and associated method comprises a multi-mode device operable to support personal area network communications as well as traditional wireless local area network communications. In one embodiment, IEEE 802.11 protocol IBSS communications are used to transport Bluetooth communication data packets. In another embodiment, a direct link comprising direct packet transfers without beaconing is performed between the multi-mode device and another multi-mode device. Thus, the multi-mode device is operable to establish traditional BSS communications with an Access Point in addition to establishing peer-to-peer communications with another multi-mode device to transport the Bluetooth communications over the 802.11 IBSS communication link or over an IEEE 802.11 direct communication link.