Analytical expressions of maximum throughput for long-frame communications in one-way string wireless multihop networks

Komuro

et al. 2015

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This paper proposes analytical expressions of end-to-end throughput for IEEE 802.11e Enhanced Distributed Channel Access (EDCA) wireless string-topology multi-hop networks. For obtaining the IEEE 802.11e EDCA performance, internal collisions between Access Categories (ACs) in a node, frame collisions with external nodes, and frame-existence probabilities of buffers at each AC are expressed as functions of EDCA access parameters. Therefore, it is possible to obtain the effects of the EDCA access parameters to Quality of Service (QoS) support in the EDCA. It is possible to obtain the end-to-end throughput at any offered load with respect to each AC because the buffer states can be expressed according to ACs. The obtained analytical expressions are verified by showing the quantitative agreements with simulation results.

Section: Throughput Analyses For Ieee 80211 Dcfmentioning

confidence: 99%

Section: Throughput Analyses For Ieee 80211 Dcfmentioning

confidence: 99%

mentioning

confidence: 99%

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End-to-end throughput analysis for IEEE 802.11e EDCA string-topology wireless multi-hop networks

Yuta

Komuro

et al. 2015

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“…In [2], quantitative analysis of the maximum throughput in string multi-hop networks with the one-way UDP flow was carried out, which is the first attempt to give the analytical expressions of the maximum throughput in IEEE 802.11 multi-hop networks. In [3], maximum throughput analysis for long-frame communication in the string multi-hop networks with one way flow was carried out. In [4], the analysis of maximum throughput for multi-hop network with one-way flow was also carried out.…”

Section: Throughput Analysis In the Wireless Multi-hop Networkmentioning

confidence: 99%

Backoff-stage synchronization in three-hop string-topology wireless networks with hidden nodes

Sekiya

Komuro

et al. 2012

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In IEEE 802.11 wireless multi-hop networks, each node works individually and their individual operations generate entire network dynamics. It is important to clarify the network dynamics in wireless multi-hop networks for designing and constructing multi-hop communication networks. This paper presents the network-dynamics investigations for three-hop string-topology wireless network in detail. From the investigations, a "backoff-stage synchronization" phenomenon, which is mutuality between hidden nodes, is found. The mechanism of the backoff-stage synchronization is expressed and the sufficient conditions for the synchronization occurrence are given. This phenomenon gives some impacts on the IEEE 802.11 multi-hop-network communications.

“…The airtime is time share of node states, which wastes time locality information. A necessity of spatiotemporal-locality considerations was, however, pointed out through the discoveries of special network dynamics [9][10][11]. We advocated the 'bottom-up analysis' concept from the background [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Bottom-up analysis concept for throughput and delay analyses of wireless multi-hop networks

Sekiya

2017

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This paper introduces an overview of throughput and delay analyses of IEEE 802.11 networks, mainly from authors' researches. In our opinion, the difficulty of wireless multihop network analysis comes from the network-dynamics multiplicity between uniformity and locality in spatiotemporal fields. From the background, the concept of "bottom-up analysis" was advocated, which is Network-layer modeling over MAC-layer one with respect to each node. Generalities of analytical expressions increase by applying the bottom-up analysis concept. Additionally, it is possible to express end-to-end delays by including the queuing theory in the bottom-up analysis concept. The validity of the obtained model is confirmed by comparisons with simulation results.