A Waiting-Time Dependent Backoff Algorithm for QoS Enhancement of Voice over WLAN

Chi, Jing; Wang, Yajuan; Xia, Bo; Lin, Ruozhou; Xian, Gao

doi:10.1109/pimrc.2007.4394501

Cited by 5 publications

(4 citation statements)

References 14 publications

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“…The random BO selection in the overlapped BW induces a bigger collision rate since the same BO may always be selected even from a bigger BW range. The effect of BW overlapping on collision and delay is modeled and simulated in context of WLAN [1]. And …”

Section: Higher Collision Ratementioning

confidence: 99%

“…Inheriting the essence of WDB mathematic model [1], BO function contains two addends: a deterministic function W l r (W T ) and a random function RandInt[0, W δ r ]. In Fig.…”

Section: B Mathematic Model and Parameter Settingmentioning

confidence: 99%

“…Waiting-time Dependent Back-off (WDB) has been originally proposed for WLAN [1] and is extended in this paper to the IR process in WiMAX. Focusing on contention performance, the RequestResponse mechanism based IR is considered rather than the CDMA ranging code mechanism.…”

Section: Introductionmentioning

confidence: 99%

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A Waiting-Time Dependent Algorithm for Initial Ranging in IEEE 802.16e Networks

Chi¹,

Martins

Coupechoux

2009

2009 IEEE Wireless Communications and Networking Conference

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In this paper, a contention model for the IEEE 802.16e is first proposed to analyze the frame-based behavior of contention resolution in 802.16e network. Then a Waiting-time Dependent Increasing rate Adapted Backoff (WDIA) algorithm is proposed to improve the contention efficiency. We introduce the concept of reduced overlapping between back-off windows of contending stations and we adopt an adapted increasing rate of the back-off window. The simulation results show that the WDIA algorithm achieves better performance in terms of number of retransmissions, access delay and resource utilization.

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Section: Higher Collision Ratementioning

confidence: 99%

“…Inheriting the essence of WDB mathematic model [1], BO function contains two addends: a deterministic function W l r (W T ) and a random function RandInt[0, W δ r ]. In Fig.…”

Section: B Mathematic Model and Parameter Settingmentioning

confidence: 99%

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A Waiting-Time Dependent Algorithm for Initial Ranging in IEEE 802.16e Networks

Chi¹,

Martins

Coupechoux

2009

2009 IEEE Wireless Communications and Networking Conference

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“…2004) -ποιότητα υπηρεσιών ή quality of service (QoS)-δηλ. υποστηρίζει πολυµεσικές εφαρµογές (multimedia) και υπηρεσίες µε διαφορετικές απαιτήσεις σε εύρος ζώνης, καθυστερήσεις πακέτων, διακύµανση των καθυστερήσεων και απώλειας πακέτων (Ni 2005, Kim & Cho 2004, Chi 2007).…”

Section: κατηγορίες ασυρµάτων ∆ικτύωνunclassified

Βελτιστοποίηση Απόδοσης Του Πρωτοκόλλου IEEE 802.11 Με Χρήση Μαθηματικών Μοντέλων

Ράπτης¹

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Με επιφύλαξη παντός δικαιώµατος. All rights reserved Η έγκριση της διδακτορικής διατριβής από το Τµήµα Εφαρµοσµένης Πληροφορικής του Πανεπιστηµίου Μακεδονίας δεν υποδηλώνει απαραιτήτως και αποδοχή των απόψεων του συγγραφέα εκ µέρους του Τµήµατος.

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