Mapping Diffserv to IEEE 802.11

Szigeti, Tim; Baker, Fred; Henry, Jérôme

doi:10.17487/rfc8325

Cited by 9 publications

(3 citation statements)

References 3 publications

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“…Recent efforts have mapped DSCP markings to 802.11 EDCA priority and access categories [21]. It is now possible for application providers to assign their traffic higher priority in both wired and wireless networks by setting DSCP in the IP header.…”

Section: Prioritization In Networkmentioning

confidence: 99%

Coexistence of Age Sensitive Traffic and High Throughput Flows: Does Prioritization Help?

Shreedhar¹,

Kaul²,

Yates³

2022

Preprint

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We study the coexistence of high throughput traffic flows with status update flows that require timely delivery of updates. A mix of these flows share an end-to-end path that includes a WiFi access network followed by paths over the Internet to a server in the cloud. Using real-world experiments, we show that commonly used methods of prioritization (DSCP at the IP layer and EDCA at the 802.11 MAC layer) in networks are highly effective in isolating status update flows from the impact of high throughput flows in the absence of WiFi access contention, say when all flows originate from the same WiFi client. Prioritization, however, isn't as effective in the presence of contention that results from the throughput and status update flows sharing WiFi. This results in prioritized status update flows suffering from a time-average age of information at the destination server that is about the same as when all flows have the same priority.

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Section: Prioritization In Networkmentioning

confidence: 99%

Coexistence of Age Sensitive Traffic and High Throughput Flows: Does Prioritization Help?

Shreedhar¹,

Kaul²,

Yates³

2022

Preprint

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“…Loss detection is a critical issue for any CC scheme. At the MAC layer, various mechanisms can be employed to handle the frame losses such as frame acknowledgment, retransmission, retransmission timeout, and backoff [24], [27][28][29]. Using the end-to-end approach, we avoid some issues of interaction with the MAC layer as indicated in [19], [4], [6] to keep CoAP lightweight.…”

Section: Background and Related Workmentioning

confidence: 99%

“…Examples of network-assisted CC approaches are active queue management, explicit congestion notification (ECN), and medium access control (MAC) mechanisms [21][22][23][24][25][26]. Various MAC layer functionalities are used to support the hop-by-hop transmission, such as wireless error handling, ACK frames, retransmission, transmission timeout, and backoff timer [24], [27][28][29]. Hop-by-hop MAC mechanisms can handle frame losses and retransmit lost frames using explicit ACKs and retransmission timeouts.…”

Section: Rcoap: a Rate-based Control Schemementioning

confidence: 99%

RCOAP: A Rate Control Scheme for Reliable Bursty Data Transfer in IoT Networks

Hoang

2021

IEEE Access

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The Internet Engineering Task Force (IETF) standardized the Constrained Application Protocol (CoAP) for Internet of Things (IoT) devices to meet the demands of IoT applications. Due to the constrained IoT environment, CoAP was designed based on UDP as a lightweight protocol with simple congestion control, which leverages the basic binary exponential backoff. However, the basic congestion control of CoAP is unable to effectively perform reliable bursty data transfer in IoT networks. Recent studies have indicated that CoAP and its modifications still suffer from critical performance problems regarding congestion control, throughput, and delay. The current congestion control of the CoAP does not support bursty data transfer. In contrast to the current schemes that focus on a loss-based mechanism and a retransmission time-out (RTO) calculation, we propose a new rate control scheme, RCOAP, for reliable bursty data transfer in IoT networks. RCOAP uses the concept of regulating the transmission rate of CoAP sources. The key features of RCOAP are 1) estimating the initial sending rate by probing the bottleneck bandwidth, 2) adjusting the sending rate according to the dynamic network condition, and 3) distinguishing between losses due to congestion and losses due to wireless errors for the purpose of maintaining high throughput. Simulation results indicate that RCOAP is suitable for bursty data transfer. RCOAP shows a throughput increase of approximately 135% compared to the basic CoAP, CoCoA, and CoCoA+ under the same conditions while maintaining a low delay, loss rate, and a low number of retransmission attempts.

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The Mapping Between TFD and IEEE 802.11 User Priorities and Access Categories

Chodorek¹,

Chodorek

2018

Communications in Computer and Information Science

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Mapping Diffserv to IEEE 802.11

Cited by 9 publications

References 3 publications

Coexistence of Age Sensitive Traffic and High Throughput Flows: Does Prioritization Help?

Coexistence of Age Sensitive Traffic and High Throughput Flows: Does Prioritization Help?

RCOAP: A Rate Control Scheme for Reliable Bursty Data Transfer in IoT Networks

The Mapping Between TFD and IEEE 802.11 User Priorities and Access Categories

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