Handover management based on the number of data frame retransmissions for VoWLAN

Kashihara, Shigeru; Oie, Yuji

doi:10.1016/j.comcom.2007.01.014

Cited by 19 publications

(22 citation statements)

References 11 publications

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“…This method, however, only considers the frame retransmission caused by the collision with frames transmitted from other MNs in a noninterference environment. On the other hand, we proposed an HO strategy method considering the number of data frame retries on the MAC layer [10]- [12]. This strategy employs multihoming enabling to execute multi-path transmission mode for supporting inter-domain soft-HO between two WLANs with different IP subnets.…”

Section: Existing Studies Of Handover Strategymentioning

confidence: 99%

“…In [10], we employed data frame retry as an HO decision metric in WLANs with a fixed transmission rate (11 Mb/s). However, in a real environment, almost all WLANs employ a multi-rate function that can change the transmission rate according to wireless link condition.…”

Section: Rts Frame Retriesmentioning

confidence: 99%

“…We then propose an HO strategy method based on [10]. In [10], an MN has two WLAN interfaces (IFs), and an HO Manager (HM) implemented on transport layer controls HO based on the HO decision metrics obtained through cross layer approach (see Fig.…”

Section: Proposed Handover Strategymentioning

confidence: 99%

“…AP2 is assumed to be congested due to existence of fixed 15 MNs establishing VoIP calls. The 15 MNs are randomly located To show the effectiveness of estimation of AP queue length, we compare our basic method with our previous method based on only the number of data frame retries [10]. Figures 14 and 15 show MOS variation of MN and use rate of AP1 over the distance between the MN and the AP1.…”

Section: Performance Evaluationmentioning

confidence: 99%

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Handover Management for VoWLAN Based on Estimation of AP Queue Length and Frame Retries

Niswar

Kashihara

Tsukamoto

et al. 2009

IEICE Trans. Inf. & Syst.

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SUMMARYSwitching a communication path from one Access Point (AP) to another in inter-domain WLANs is a critical challenge for delaysensitive applications such as Voice over IP (VoIP) because communication quality during handover (HO) is more likely to be deteriorated. To maintain VoIP quality during HO, we need to solve many problems. In particular, in bi-directional communication such as VoIP, an AP becomes a bottleneck with the increase of VoIP calls. As a result, packets queued in the AP buffer may experience a large queuing delay or packet losses due to increase in queue length or buffer overflow, thereby causing the degradation of VoIP quality for the Mobile Nodes (MNs) side. To avoid this degradation, MNs need to appropriately and autonomously execute HO in response to the change in wireless network condition, i.e., the deterioration of wireless link quality and the congestion state at the AP. In this paper, we propose an HO decision strategy considering frame retries, AP queue length, and transmission rate at an MN for maintaining VoIP quality during HO. Through simulation experiments, we then show that our proposed method can maintain VoIP quality during HO by properly detecting the wireless network condition. key words: handover, AP queue length, frame retries, transmission rate, VoIP, multi-rate WLAN

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Section: Existing Studies Of Handover Strategymentioning

confidence: 99%

Section: Rts Frame Retriesmentioning

confidence: 99%

Section: Proposed Handover Strategymentioning

confidence: 99%

Section: Performance Evaluationmentioning

confidence: 99%

See 2 more Smart Citations

Handover Management for VoWLAN Based on Estimation of AP Queue Length and Frame Retries

Niswar

Kashihara

Tsukamoto

et al. 2009

IEICE Trans. Inf. & Syst.

Self Cite

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“…The MNs implement the VoIP call with the CN. The new NHM working in a multi-homing is similar to [39][40] with respect to improve the VoIP session conservation among the MN and CN, it must be correctly switched among the single-casting and bi-casting modes in reply to wireless network rules. Single-casting mode known as the MN communicates with a CN using only one IF.…”

Section: Resultsmentioning

confidence: 99%

Ant Colony Optimization Based Handoff Scheme and Verifiable Secret Sharing Security with M-M Scheme for VoIP

Shankar¹,

Eswaramoorthy²

2017

IJIES

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Voice over Inter Protocol (VoIP) empowers in the integration of voice data over IP networks, minimizing the cost of network transmission for helping users of IP protocol. Robust and effective procedure of handoff is introduced for increasing the quality and the dependability of the networks. Ant Colony Optimization (ACO) is presented for the handoff mechanism and Mean Opinion Score (MOS) is observed to be the fitness value for obtained measurements of the assessment of voice quality. In this research, the scheme of Multiplex-Multicast (M-M) is proposed that will improve the capability of VoIP in WLAN to 100% in the form of an infrastructure Basic Service Set (BSS). This research work deals with the security features of VoIP in order to enhance the quality making use of Verifiable Secret Sharing (VSS) with the help of M-M scheme. The M-M scheme will eliminate the downlink VoIP traffic ineffectiveness through the multiplexing of the packets from different VoIP streams into one multicast packet for transmitting over the WLAN. The results from simulation indicate the advancements in the security enhancements making use of the proposed schemes. The average Round Trip Time (RTT) results of the proposed VSS with M-M are 0.30436 milliseconds, whereas average RTT is 0.3598 milliseconds and 0.43604 milliseconds for VSS and Shamir SS methods respectively. It concludes that the proposed VSS with M-M takes lesser RTT results when compared to existing methods.

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An implementation design of a cross-layer handover method with multi-path transmission for VoIP communication

et al. 2014

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Handover management based on the number of data frame retransmissions for VoWLAN

Cited by 19 publications

References 11 publications

Handover Management for VoWLAN Based on Estimation of AP Queue Length and Frame Retries

Handover Management for VoWLAN Based on Estimation of AP Queue Length and Frame Retries

Ant Colony Optimization Based Handoff Scheme and Verifiable Secret Sharing Security with M-M Scheme for VoIP

An implementation design of a cross-layer handover method with multi-path transmission for VoIP communication

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