Traffic Arbiter for Wireless MAC Interference Synchronization
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Solution Overview
Problem
In wireless communication systems using Time Division Multiplexing (TDM), there is a challenge in coordinating media access control between devices with predetermined time-slot allocations, leading to potential disruptive interference when multiple devices operate on the same or similar frequencies.
Innovation Solution
A traffic arbiter is used to manage time-slot allocations for one wireless MAC, determining when to grant or deny transmission and reception permissions to another wireless MAC based on predetermined time-slot allocations, prioritizing operations to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple wireless MACs operate independently with predetermined time-slot allocations, then each MAC can maintain its own transmission schedule, but disruptive interference occurs when transmissions from different MACs overlap on the same frequency band
Solution Approach 1:
A traffic arbiter is introduced as an intermediary component that receives time-slot allocation information from multiple wireless MACs and coordinates their transmissions. The arbiter grants or denies transmission permissions to each MAC based on current time-slot allocations, preventing overlapping transmissions on the same frequency band while allowing independent MAC operation to be maintained.
2Object-affected harmful factors
If a traffic arbiter coordinates transmissions between multiple wireless MACs to prevent interference, then disruptive interference is reduced, but the system complexity increases due to the need for arbitration logic and time-slot synchronization
Solution Approach 1:
The traffic arbiter merges the coordination function for multiple wireless MACs into a single centralized component. Instead of implementing complex arbitration logic in each MAC device, the arbitration function is consolidated in one unit that receives time-slot allocation information from all MACs and makes centralized transmission permission decisions, simplifying the overall system architecture.
3Object-affected harmful factors
If wireless MACs are denied transmission during allocated time slots of other MACs, then interference is minimized, but transmission efficiency decreases due to reduced available transmission opportunities
Solution Approach 1:
The transmission permission granted by the traffic arbiter is dynamic rather than static. The arbiter continuously evaluates current time-slot allocations from multiple MACs and adjusts transmission permissions in real-time based on the current time and allocation status. This allows a MAC to transmit during time slots allocated to other MACs when those other MACs are not currently scheduled to transmit, maximizing transmission opportunities while preventing interference.
Data Source
AI summary
Embodiments of the present invention provide a method that includes receiving, by a traffic arbiter, a predetermined time-slot allocation of one or more uplink time slots and/or one or more downlink time slots for a first wireless media access control (MAC) configured to operate within a first wireless transmission system. The method also includes determining, by the traffic arbiter, whether to grant a second wireless MAC, configured to operate within a second wireless transmission system, permission to transmit or receive based at least in part on the predetermined time-slot allocation.