Single Hardware Receiver for Concurrent IEEE 802.15.4 and BLE Detection
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Solution Overview
Problem
Existing solutions require separate hardware or software configurations to receive data packets from transmitters using different standards like IEEE 802.15.4 and Bluetooth Low Energy, leading to high costs and inability to concurrently listen for multiple standards.
Innovation Solution
A method using time multiplexing scheduling in a single hardware receiver to alternate between synchronization detection for IEEE 802.15.4 and Bluetooth Low Energy transmissions, ensuring no preamble is missed by extending the listening time slot to accommodate the longer preamble of the second type of transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate hardware receivers are used for different transmission standards, then detection reliability for each standard is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines multiple synchronization detection functionalities (spread spectrum detection for IEEE 802.15.4 and non-spread spectrum detection for Bluetooth) into a single hardware receiver. The receiver alternates between different detection modes using time multiplexing, eliminating the need for separate hardware receivers for each standard while maintaining detection reliability.
Solution Approach 2:
The single hardware receiver is designed to perform multiple functions by supporting both spread spectrum synchronization detection (for IEEE 802.15.4) and non-spread spectrum synchronization detection (for Bluetooth). The receiver can switch between these different detection modes depending on the transmission standard being monitored.
2Device complexity
If a single hardware receiver is used for multiple standards, then device complexity is reduced, but the ability to concurrently listen for multiple standards deteriorates
Solution Approach 1:
The receiver employs periodic time multiplexing to alternate between spread spectrum synchronization detection and non-spread spectrum synchronization detection. By carefully designing the time slots and switching frequency, the receiver can effectively monitor both IEEE 802.15.4 and Bluetooth transmissions without missing preambles from either standard.
3Device complexity
If time multiplexing is used to alternate between detection types, then hardware cost is reduced, but listening time slot duration must be extended to avoid missing preambles
Solution Approach 1:
The receiver uses dynamic switching between different synchronization detection modes based on the current time slot configuration. The system adapts its detection behavior by selecting appropriate detection algorithms and time slot durations according to whether it is monitoring IEEE 802.15.4 or Bluetooth transmissions, optimizing performance for each standard.
Data Source
AI summary
Method for receiving data packet transmissions, wherein synchronization with a transmitter is accomplished based on detection of a preamble transmitted by the transmitter. A time multiplexing scheduling of a single hardware receiver arrangement is used, and the time multiplexing scheduling has a main time slot comprising a first listen period and a second listen period following the first listen period. In the first listen period a first type of synchronization detection is executed (e.g. IEEE 802.15.4), and in the second listen period a second type of synchronization detection different from the first type of synchronization detection is executed (e.g. BLE).