Receiver-Side Buffering for Time-Aware Cellular Scheduling
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Solution Overview
Problem
Time-aware scheduling in wireless communication networks increases buffer requirements on the transmitter side, as traffic cannot be transmitted outside designated time windows, even if link capacity is available, posing a burden on devices with limited memory resources.
Innovation Solution
Implementing receiver-side buffering, where the transmitting node informs the receiving node about designated time intervals, allowing preemptive transmission of traffic data outside the designated time window, and the receiving node buffers the data until the next time interval, ensuring compliance with the time-aware schedule while efficiently using available bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If time-aware scheduling is implemented with transmitter-side buffering, then traffic can be transmitted within designated time windows, but buffer requirements on the transmitter side increase, burdening devices with limited memory resources
Solution Approach 1:
The patent inverts the traditional buffering location from the transmitter side to the receiver side. Instead of the transmitter buffering traffic data until the designated time window, the receiver buffers the data after reception. This inversion allows the transmitter to use available link capacity immediately while the receiver handles the timing compliance, thereby reducing transmitter buffer requirements while maintaining scheduling reliability.
2Reliability
If traffic is restricted to designated time windows only, then time-aware scheduling is maintained, but bandwidth utilization decreases when link capacity is available outside time windows
Solution Approach 1:
The patent enables preliminary transmission of traffic data outside the designated time window by buffering at the receiver side. The transmitter can send data immediately when link capacity is available, and the receiver stores it temporarily until the designated time window arrives. This preliminary action allows full utilization of available bandwidth while ensuring time-aware scheduling compliance through delayed delivery at the receiver.
3Reliability
If transmitter buffers traffic data until designated time windows, then scheduling compliance is ensured, but transmission latency increases even when link capacity is available
Solution Approach 1:
By inverting the buffering location to the receiver side, the patent eliminates the waiting time at the transmitter. Data is transmitted immediately when available, and the receiver handles the timing delay by buffering until the designated time window. This inversion transfers the time loss from transmission waiting to receiver buffering, effectively reducing overall transmission latency while maintaining scheduling compliance.
Data Source
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AI summary
Apparatus and methods of wireless communications include, at a receiving node, receiving timing information corresponding to a traffic class identifier. The timing information being associated with a time interval for communicating data of a traffic class corresponding to the traffic class identifier. Aspects include receiving traffic data pertaining to the traffic class, determining that the traffic data was transmitted or is received outside the time interval, and then buffering the traffic data. Additionally, aspects include forwarding the traffic data in response to a next occurrence of the time interval. A transmitting node may be configured with complimentary functions.