Implementation of Real-time Network Extension on Embedded Linux

Tian, Yuan; Ren, Guanghui; Wu, Qing

doi:10.1109/iccsn.2009.119

Cited by 4 publications

(1 citation statement)

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“…Results in [2] clearly shows that RT_PREEMPT Linux kernel patch applied to a mainline kernel [3,4,12,13] nearly fulfills the outbound packet cadence needs, in terms of determinism and throughput. On the other hand, the concurrent differently-prioritized accesses to the communication medium scramble with each other causing retards and losses, clearly undermining the efficiency and purpose of the protocol.…”

Section: Introductionmentioning

confidence: 78%

Improvements of determinism in WI-FI real-time protocol for agricultural machine clusters

Ruggeri

Malaguti

Martelli

2012

2012 IEEE International Symposium on Industrial Electronics

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Fully automated agricultural field treatments and Precise Farming are coming in shortly; yet increasing production needs demand a more efficient, planned and harmonized interaction between the machinery clusters involved in the work session. Soon a strong, effective and integrated standardization will be more than needed. This is the path the ISO standardization working group ISO TC-127/SC19/WG5 has taken. The paper describes the further enhancements done from previous works [1,2]. Particularly, we focused on stabilizing performances of high priority communications at the expense of best-effort, low urgency traffic. Performances are explained as [2]. The main improvements concern some kernel modifications, especially about the networking management. The results will show significant steps forward towards a quasi-isochronous transport protocol that manages high priority flows ensuring a high level of determinism and throughput.

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