Collocated Transceiver Coexistence via TWT Schedule
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Solution Overview
Problem
Existing collocated transceivers face inefficiencies in sharing a common transmission medium, such as a 2.4 GHz band antenna, leading to interference and high transmission overhead due to the use of CTS-to-Self frames or management frames for coexistence.
Innovation Solution
Implementing a medium access schedule for one transceiver based on the transmission parameters of another, with this schedule distributed in a single beacon frame to synchronize and reduce the number of frames required for coexistence, utilizing a target-wake-time (TWT) schedule to determine wake and sleep times for downstream devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CTS-to-Self frames or management frames are used for coexistence between collocated transceivers, then transceiver coordination is achieved, but transmission overhead increases significantly
Solution Approach 1:
The patent applies preliminary action by having the first transceiver generate a medium access schedule in advance based on the second transceiver's transmission parameters, and transmit this schedule to downstream devices before actual communication begins. This pre-scheduling eliminates the need for continuous CTS-to-Self frames during operation, reducing transmission overhead while maintaining coordination reliability.
Solution Approach 2:
The patent extracts the essential coordination information from repeated CTS-to-Self frames and management frames, consolidating it into a single medium access schedule that is transmitted once and then enforced. This extraction removes the redundant framing overhead while preserving the coordination function.
2Device complexity
If multiple transceivers share a single antenna, then device integration is improved, but transmission medium sharing efficiency deteriorates
Solution Approach 1:
The patent applies dynamics by implementing a dynamic medium access schedule that adapts to the transmission parameters of different transceivers. The schedule dynamically determines when each transceiver can access the shared antenna, allowing efficient time-division multiplexing that improves transmission medium sharing efficiency while maintaining the integrated device architecture.
Solution Approach 2:
The patent segments the transmission medium access into distinct time slots allocated to different transceivers based on their transmission parameters. This segmentation allows multiple transceivers to share the single antenna efficiently without interference, improving productivity while maintaining device integration.
3Loss of time
If the number of frames for coexistence is reduced, then transmission overhead decreases, but coexistence effectiveness may be compromised
Solution Approach 1:
The patent incorporates feedback mechanisms where downstream devices receive the medium access schedule in beacon frames and adjust their transmission behavior accordingly. This feedback loop ensures that reducing the number of frames does not compromise coexistence effectiveness, as the schedule is enforced through protocol-level feedback and adjustment.
Data Source
AI summary
Systems, methods, and devices enable coexistence of traffic for collocated transceivers. Methods may include generating a target-wake-time (TWT) agreement based on availability of a first transceiver and a plurality of wireless devices. Methods also include generating a medium access schedule for the first transceiver using a first transmission protocol based on transmission events determined based on a second transmission protocol of a second transceiver, the second transceiver being collocated in the same device as the first transceiver, and the medium access schedule being a TWT schedule including active times for the first transceiver and each of the plurality of wireless devices determined based on a timing and duty cycle of the second transmission protocol and activity of the second transceiver. Methods also include transmitting the TWT schedule to the plurality of wireless devices, the TWT schedule identifying the one or more active times to the plurality of wireless devices.