Dynamic bandwidth partition schemes for integrated voice, video, and data traffic in the IEEE 802.11e distributed wireless LANs

Xiao, Yang; Li, Frank Haizhon; Li, Ming; Zhang, Jingyuan; Li, Bo

doi:10.1002/dac.1077

Cited by 4 publications

(3 citation statements)

References 31 publications

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“…Since IEEE 802.11 MAC is a contention‐based wireless MAC, we plan to examine the impact contention has on the system's performance, by increasing the number of nodes and applications, on the image retrieval process. Moreover, we will investigate the effect of multiple data flows on the image retrieval process, in terms of delay, fairness, and so on and suggest improvements, as carried out in . Furthermore, we plan to extend the experiments and to evaluate the performance of other compact descriptors from the recent literature such as and .…”

Section: Discussionmentioning

confidence: 99%

Content‐based image retrieval over IEEE 802.11b noisy wireless networks

Chatzistavros

Chatzichristofis

Zagoris

et al. 2014

Int J Communication

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SUMMARYMobile devices such as smartphones and tablets are widely used in everyday life to perform a variety of operations, such as e-mail exchange, connection to social media, bank/financial transactions, and so on. Moreover, because of the large growth of multimedia applications, video and image transferring and sharing via a wireless network is becoming increasingly popular. Several modern mobile applications perform information retrieval and image recognition. For example, Google Goggles is an image recognition application that is used for searches based on pictures taken by handheld devices. In most of the cases, image recognition procedure is an image retrieval procedure. The captured images or a low-level description of them are uploaded online, and the system recognizes their content by retrieving visually similar pictures. Taking into account the last comment, our goal in this paper is to evaluate the process of image retrieval/recognition over an Institute of Electrical and Electronics Engineers 802.11b network, operating at 2.4 GHz. Our evaluation is performed through a simulated network configuration, which consists of a number of mobile nodes communicating with an access point. Throughout our simulations, we examine the impact of several factors, such as the existence of a strong line of sight during the communication between wireless devices. Strong line of sight depends on the fading model used for the simulations and has an effect on BER. We have used a large number of image descriptors and a variety of scenarios, reported in the relative literature, in order to comprehensively evaluate our system. To reinforce our results, experiments were conducted on two well-known images databases by using 10 descriptors from the literature. Copyright

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Section: Discussionmentioning

confidence: 99%

Content‐based image retrieval over IEEE 802.11b noisy wireless networks

Chatzistavros

Chatzichristofis

Zagoris

et al. 2014

Int J Communication

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“…According to the previous introduction depicted in Section 1, the proposed FCS‐VN involves the following: (1) layered streaming; (2) streaming over wireless networks; (3) bandwidth aggregation; (4) cooperative transmission; and (5) vehicular networks. In these years, many researchers analyzed and discussed the pros and cons of video streaming over wireless networks . Because the long delay and high packet loss rate of wireless networks induce poor quality for video streaming, layered video streaming is adapted over wireless networks .…”

Section: Related Workmentioning

confidence: 99%

A buffer‐aware fleet‐based cooperative H.264/SVC streaming over vehicular networks

Lee

Huang

Yang

et al. 2013

Int J Communication

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SUMMARYBecause of of the characteristics of high mobility, time varying and dynamic topology, how to provide multimedia streaming service for connected vehicles becomes one emerging and popular technical research. The motivation of this paper is to utilize cooperation among neighboring vehicles for video streaming's quality improvement over vehicular networks. In the proposed cooperative streaming scenario, a connected vehicle requests a video stream from the Internet by using its 3G/3.5G interface, which may not have enough bandwidth to receive good quality of video. Thus, the vehicle is suggested to ask neighboring members belonging to the same fleet to download the requested video data by using their 3G/3.5G interfaces. Then, neighboring members should forward video data to the requested vehicle by using another wireless technique, for example, dedicated short range communication (DSRC). Regarding the differentiation between the two access networks, that is, 3G/3.5G network and DSRC network, a buffer-aware scheduling mechanism based on layered streaming is designed in this paper to adapt to the networking situation of the vehicular networks. Two selection algorithms are proposed to select neighboring vehicles from the fleet. According to our simulation results, the 3G/3.5G-based selection algorithm is suitable to improve video quality for vehicles at low speeds. On the other hand, the DSRC-based selection algorithm can get better performance when vehicles move at high speeds or too many data are transmitted among vehicles.

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“…Moreover, we will investigate the eect of multiple data ows on the image retrieval process, in terms of delay, fairness etc. and suggest improvements, as done in [69]. Furthermore, a plan is to extend the experiments and evaluate the performance of other compact descriptors from the recent literature such as [70] and [71].…”

Section: Discussionmentioning

confidence: 99%

Routing protocols and quality of service evaluation in wireless ad hoc and sensor networks

Chatzistavros¹,

Χατζησταύρος²

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Τα επικοινωνιακά χαρακτηριστικά ενός ολοκληρωμένου συστήματος διαχείρισης για περιβαλλοντική παρακολούθηση, παρουσιάζονται σε αυτήν τη διατριβή. Η πλατφόρμα CYBERSENSORS αποτελείται από δύο διακριτά υποσυστήματα, ένα οπτικό και ένα σύστημα παρακολούθησης φυσικών και χημικών παραμέτρων, τα οποία λειτουργούν βάσει των προτύπων ΙΕΕΕ 802.11 και ΙΕΕΕ 802.15.4, αντίστοιχα. Ως προς το πρώτο, πραγματοποιείται συγκριτική ανάλυση της απόδοσης τριών διαφορετικών πρωτοκόλλων δρομολόγησης. Επιπλέον, παρουσιάζεται μια πρωτότυπη προσέγγιση ανάκτησης εικόνας σε περιβάλλον με θόρυβο. Οι κόμβοι του υποσυστήματος φυσικών/χημικών παραμέτρων σχηματίζουν ένα ΙΕΕΕ 802.15.4-συμβατό ασύρματο δίκτυο αισθητήρων. Εξετάζονται δύο διαφορετικές προσεγγίσεις υπολογισμού απόδοσης, για τοπολογίες αλυσίδας και αστέρα. Επιπλέον, παρουσιάζεται μια αναλυτική μέθοδος για τον υπολογισμού του δείκτη εκθετικής υποχώρησης, ο οποίος ορίζεται στο πρότυπο ΙΕΕΕ 802.15.4. Τα δεδομένα που συλλέγονται από τα δύο υποσυστήματα πρέπει να μεταφερθούν σε έναν απομακρυσμένο διακομιστή για περαιτέρω ανάλυση, μέσω μιας ευρυζωνικής σύνδεσης 3G. Στο τελευταίο κομμάτι της διατριβής, εξετάζονται οι απαιτήσεις της μετάδοσης και πραγματοποιείται μια εκτίμηση της χωρητικότητας uplink της σύνδεσης 3G.

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Dynamic bandwidth partition schemes for integrated voice, video, and data traffic in the IEEE 802.11e distributed wireless LANs

Cited by 4 publications

References 31 publications

Content‐based image retrieval over IEEE 802.11b noisy wireless networks

Content‐based image retrieval over IEEE 802.11b noisy wireless networks

A buffer‐aware fleet‐based cooperative H.264/SVC streaming over vehicular networks

Routing protocols and quality of service evaluation in wireless ad hoc and sensor networks

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