VoIP Traffic Scheduling in WiMAX Networks

Haghani, Ehsan; Ansari, Nirwan

doi:10.1109/glocom.2008.ecp.245

Cited by 20 publications

(14 citation statements)

References 8 publications

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“…Then, Yu et al [5] proposed a uplink performance analysis model focusing on the VoIP services in TDD-OFDMA based WiMAX network. Haghani et al [6] proposed a scheduling algorithm, which is claimed to be traffic aware, for VoIP applications in WiMAX networks. Although using traffic models, they focused mainly on implementing their proposed algorithms.…”

Section: Introductionmentioning

confidence: 99%

Improving VoIP Traffic Performance in WiMAX Networks

Adhicandra

2010

2010 2nd International Conference on Evolving Internet

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Recently, a promising technology called WiMAX is providing wireless last-mile connectivity due to its high speed data rates, low cost of deployment, and large coverage area. Both MAC and Physical layer of this technology refer to the IEEE 802.16e standard, which defines five different data delivery service classes that can be used in order to satisfy Quality of Service (QoS) requirements of different applications, such as VoIP, FTP, videoconference, Web, etc. The main aim of this paper is to examine a case of QoS large cell deployment over a cellular WiMAX network. In particular, the paper compares the performance obtained using ertPS service class for voice application in static and mobile conditions. Results indicate that on WiMAX connection statistics, traffic contract was made correctly by considering the overheads, and the performance of voice in mobile environment showed an acceptable level for Mean Opinion Score at around 3.55 until 100 seconds.

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Section: Introductionmentioning

confidence: 99%

Improving VoIP Traffic Performance in WiMAX Networks

Adhicandra

2010

2010 2nd International Conference on Evolving Internet

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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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“…For instance, VoIP scheduling for WiMAX networks was studied [23,24]. Haghani et al [25] considered MPEG video scheduling in WiMAX networks.…”

Section: Hierarchical Schedulersmentioning

confidence: 99%