Multi-transceiver Wireless Device Coexistence Controller
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Solution Overview
Problem
Multi-transceiver wireless communication devices, such as those with both WiMax and Bluetooth transceivers, face interference issues where transmissions from one transceiver can interfere with receptions of another, necessitating systems and methods to reduce conflicts between co-located transceivers.
Innovation Solution
The implementation of a non-continuous sequence of Bluetooth transceiver transmissions that coincide with WiMax listen intervals during sleep mode, using a coexist controller to manage WiMax active and frame-sync signals to prevent interference, allowing for the establishment of initial Bluetooth connections while maintaining an active WiMax connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the Bluetooth transceiver continuously transmits for device discovery and connection establishment, then the connection establishment is reliable, but the transmissions interfere with the WiMax transceiver receptions
Solution Approach 1:
The patent applies periodic action by implementing a non-continuous transmission sequence where the Bluetooth transceiver transmits during specific intervals (e.g., during WiMax sleep mode or listen intervals) and remains silent during other intervals. This periodic transmission pattern allows the Bluetooth device to conduct discovery and connection establishment procedures while avoiding interference with WiMax receptions, thus resolving the contradiction between transmission reliability and interference reduction.
2Reliability
If the WiMax transceiver continuously transmits to maintain active connection, then the WiMax communication is stable, but the transmissions interfere with the Bluetooth transceiver receptions during device discovery
Solution Approach 1:
The patent applies segmentation by dividing the transmission timeline into distinct segments or intervals. The WiMax transceiver is configured to transmit during certain time segments (e.g., active communication periods) and remain silent during other segments (e.g., Bluetooth listen intervals or sleep mode periods). This temporal segmentation allows both transceivers to operate simultaneously without mutual interference, maintaining WiMax connection stability while enabling Bluetooth device discovery.
3Speed
If the Bluetooth transceiver transmits during WiMax active frames, then the Bluetooth device discovery is fast, but the transmissions cause interference to WiMax communications
Solution Approach 1:
The patent applies dynamics by implementing an adaptive transmission schedule that adjusts the Bluetooth transceiver's operation based on the WiMax transceiver's state. The system dynamically determines when the Bluetooth transceiver should transmit (e.g., during WiMax sleep mode or designated listen intervals) and when it should remain silent (during WiMax active transmission periods). This dynamic adjustment allows fast Bluetooth device discovery while preventing interference with WiMax communications, resolving the contradiction between speed and harmful factors.
Data Source
AI summary
Embodiments of a multi-transceiver wireless communication device and methods for operating during device discovery and connection establishment are generally described herein. In some embodiments, the multi-transceiver wireless communication device includes a broadband wireless access network (BWAN) transceiver and a short-range frequency-hopping (SRFH) transceiver. The SRFH transceiver transmits a non-continuous sequence of either page or inquiry trains to either discover or establish an initial connection with a SRFH device when an active BWAN connection exists with a base station. The non-continuous sequence of trains may include a regularly repeating vacant transmission interval selected to coincide with listen intervals of frames when the BWAN transceiver is in sleep mode.