Improved VoIP capacity in mobile WiMAX systems using persistent resource allocation

Fong, Mo-Han; Novak, R. P.; McBeath, S.; Srinivasan, R.

doi:10.1109/mcom.2008.4644119

Cited by 35 publications

(15 citation statements)

References 3 publications

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“…As it has been noticed, the fact that related work in this area of research has mentioned it, this topic has been roamed in different research in which researchers have implemented several methods to enhance an efficient way to make use of the bandwidth and reduce the delay [6]. The MAP overhead reduction results in overall system VoIP capacity increase of 15 percent [7]. This resulted in using different methods that lead to the increase use of bandwidth.…”

Section: Introductionmentioning

confidence: 99%

The Performance Evaluation of Voip for a Mobile User

Fadhil

Rasul²,

muhammed³

2017

TNC

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Broadband Wireless Access (BWA) technology has developed rapidly and it has dominated the advancement of technology especially in wireless networks. This paper studies the performance evaluation of VoIP for a mobile user and how the QoS parameters vary for different speeds. The purpose of the study is to examine the effect of mobility of a user on the performance of VoIP. In the meanwhile, it is evaluating the simulation and emulation method for its validity to be used for any new upcoming technology. However, the results of the simulation need to be verified and assessed by emulation tested results, hoping that both results match closely with each other.

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Section: Introductionmentioning

confidence: 99%

The Performance Evaluation of Voip for a Mobile User

Fadhil

Rasul²,

muhammed³

2017

TNC

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“…However, the HARQ retransmissions increase the signaling overhead and the transmission delay [1]. First, the signaling overhead deteriorates the downlink system performance by decreasing the downlink resources that can transmit data.…”

Section: Introductionmentioning

confidence: 99%

“…Other studies relied on a computer simulation to evaluate the VoIP performance in 3GPP LTE systems; in these cases, consideration was given to the effect of HARQ processes on the VoIP capacity, and the number of retransmissions was determined on the basis of the HARQ round trip time (RTT) and the delay budget [6], [8], and [9]. Some researchers have evaluated the performance of VoIP services in a mobile WiMAX system [1], [3], [10]- [13] but the HARQ mechanism is not considered in any of those works. Another study derived the average throughput on the basis of the joint effects of finite length queueing and the AMC for transmissions over wireless links but failed to consider the signaling overhead and the HARQ mechanism [14].…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of VoIP services in mobile WiMAX systems with a hybrid ARQ scheme

2012

J. Commun. Netw.

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This paper analyzes the performance of voice-overInternet protocol (VoIP) services in terms of the system throughput, the packet delay, and the signaling overhead in a mobile WiMAX system with a hybrid automatic repeat request (HARQ) mechanism. Furthermore, a queueing analytical model is developed with due consideration of adaptive modulation and coding, the signaling overhead, and the retransmissions of erroneous packets. The arrival process is modeled as the sum of the arrival rate at the initial transmission queue and the retransmission queue, respectively. The service rate is calculated by taking the HARQ retransmissions into consideration. This paper also evaluates the performance of VoIP services in a mobile WiMAX system with and without persistent allocation; persistent allocation is a technique used to reduce the signaling overhead for connections with a periodic traffic pattern and a relatively fixed payload. As shown in the simulation results, the HARQ mechanism increases the system throughput as well as the signaling overhead and the packet delay.Index Terms: Hybrid automatic repeat request (HARQ), mobile WiMAX, persistent allocation, signaling overhead, voice-overInternet protocol (VoIP).

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“…Although VoIP uplink resource scheduling has been discussed by many recent papers as [3][4][5][6][7], only a few papers investigate the influence of the silence period on uplink resource scheduling. In [8] a GM bit scheduling algorithm is introduced.…”

Section: Introductionmentioning

confidence: 99%

A Silence Duration Based Uplink Scheduling Algorithm for Multiple VoIP Users in M-WiMAX

Alkadhi

Liu

Yang

et al. 2010

2010 Second International Conference on Future Networks

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This paper proposes an efficient uplink scheduling algorithm that can perfectly support various VoIP CODECs with VAD/DTX/CNG in M-WiMAX considering the variants of silence duration between different voice users, solving the problems of uplink resources wastes and overwhelmingly large overhead that caused during silence period. In our proposed algorithm, efficient schemes is proposed to implement the uplink resource interval and allocation procedure, and the BS adapts this uplink resources interval according to the reserved bit in the generic MAC header of IEEE802.16e, which is utilized to indicate voice activity of each voice user . The performance analysis of the conventional algorithms (UGS, rtPS and ertPS) as well as the one proposed in this paper is also provided. Through the numerical validations, proposed algorithm performs efficiently than the conventional algorithms over enhancement of resource utilization, total throughput, and system capacity. Also, it is proved that our algorithm can support more voice users than the conventional algorithms.

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Improved VoIP capacity in mobile WiMAX systems using persistent resource allocation

Cited by 35 publications

References 3 publications

The Performance Evaluation of Voip for a Mobile User

The Performance Evaluation of Voip for a Mobile User

Performance analysis of VoIP services in mobile WiMAX systems with a hybrid ARQ scheme

A Silence Duration Based Uplink Scheduling Algorithm for Multiple VoIP Users in M-WiMAX

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