MoCA Network MAP Cycle Optimization for Small Packet Latency
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Solution Overview
Problem
MoCA networks face inefficiencies in transmitting small packets due to limited reservation request opportunities and high latency, which affects MAC efficiency and round trip times, especially for applications requiring application layer acknowledgments.
Innovation Solution
The solution involves aggregating small data packets with reservation requests or MAP frames, allowing for the encapsulation of control and data packets, and optimizing the transmission strategy to avoid efficiency penalties and latency delays by using broadcast transmissions when possible.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a completely scheduled media access plan is used, then network performance is maintained, but flexibility and adaptability are reduced
Solution Approach 1:
The media access plan is segmented into two distinct parts: a scheduled TDMA portion for guaranteed performance and an unscheduled CSMA portion for flexible access. This segmentation allows the system to maintain reliability for critical traffic while providing adaptability for other traffic types, resolving the contradiction between scheduled performance and flexibility.
2Reliability
If TDMA is used for media access, then network performance is optimized, but latency for small packets increases
Solution Approach 1:
The media access mechanism is segmented into TDMA and CSMA portions, allowing small packets to use CSMA for faster access while TDMA handles performance-critical traffic. This reduces latency for small packets without compromising overall network performance.
Solution Approach 2:
Instead of using pure TDMA for all traffic, the system applies TDMA partially only to traffic that requires guaranteed performance, while allowing other traffic to use CSMA. This partial application of TDMA reduces unnecessary latency for traffic that doesn't require strict timing guarantees.
3Ease of operation
If reservation requests are sent separately from data packets, then control and data transmission is simplified, but MAC efficiency decreases
Solution Approach 1:
The patent merges reservation requests with data packets by allowing data packets to be transmitted during reservation request opportunities. This combining approach eliminates the efficiency penalty of separate transmissions while maintaining operational simplicity, as nodes still follow the same MAP cycle structure.
4Stability of the object's composition
If small data packets are transmitted using standard MoCA methods, then transmission protocol is maintained, but latency and efficiency penalties occur
Solution Approach 1:
The system applies CSMA access opportunities specifically to small data packets that would otherwise incur TDMA latency penalties. This partial application of CSMA to appropriate traffic types reduces latency for small packets while maintaining protocol consistency for all traffic.
Data Source
AI summary
Embodiments may be disclosed herein that provide systems, devices, and methods of operating a Multimedia over Coax (MoCA) network. One such embodiment is a method comprising: dedicating a portion of a MAP cycle prior to a MAP packet to reservation requests and small data packets; and dedicating a portion of the MAP cycle after the MAP packet to data traffic.