Tiered bandwidth reservation scheme for multimedia wireless networks

Kuang, Lai Wei; Hsu-Sheng, Tsai; Sun, Youxian

doi:10.1002/wcm.650

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…CAC algorithms are responsible for determining the admission or otherwise of a new or handoff connection as a function of network resources availability without compromising QoS requirements of existing connections [13], [14]. The most important concerns of CAC in WiMAX is ensuring QoS of different connections [15].…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of call admission control techniques for efficient resource utilization and QoS in IEEE 802.16e network

Chinaeke-Ogbuka,

Ekengwu,

Nnamani

et al. 2024

TELKOMNIKA

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In order to provide solution to limited network resources in heterogeneous wireless networks supporting different applications with distinct quality of service (QoS) requirements, call admission control (CAC) schemes are implemented. This work is aimed at investigating three mostpopular CAC schemes employedin mobile worldwide interoperability for microwave access (WiMAX), namely dynamic CAC with bandwidth reservation (DCACBR), QoS-aware CAC (QoSACAC), and QoS guaranteed CAC (QoSGCAC) to identify their shortfalls which will form the focus of future research. A general platform is developed and simulated. The simulation was based on the following KPIs: blocking rate, dropping rate, and throughput for new and handoff connections. Simulation results for new connection shows that QoSGCAC outperforms scheme DCACBR and QoSACAC, having 26.9% and 8.56% improvements in throughput and 63.11% and 24.17% in blocking rate respectively. For handoff connection, QoSACAC showed the best performance having 13.25% and 47.84% improvements in throughput and 6.8% and 49.3% in blocking rate as compared to the DCACBR and QoSGCAC, respectively. Result analysis shows that QoSACAC has the best performance however, it admits new connections and degrade existing connections but failed to consider the delay-intolerant service classes. It is recommended that the QoSACAC be further improved.

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Section: Introductionmentioning

confidence: 99%

Comparative analysis of call admission control techniques for efficient resource utilization and QoS in IEEE 802.16e network

Chinaeke-Ogbuka,

Ekengwu,

Nnamani

et al. 2024

TELKOMNIKA

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Bandwidth borrowing‐based QoS approach for adaptive call admission control in multiclass traffic wireless cellular networks

Khanjari

Arafeh

Day

et al. 2011

Int J Communication

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This paper proposes a QoS approach for an adaptive call admission control (CAC) scheme for multiclass service wireless cellular networks. The QoS of the proposed CAC scheme is achieved through call bandwidth borrowing and call preemption techniques according to the priorities of the traffic classes, using complete sharing of the available bandwidth. The CAC scheme maintains QoS in each class to avoid performance deterioration through mechanisms for call bandwidth degradation, and call bandwidth upgrading based on min-max and max-min policies for fair resource deallocation and reallocation, respectively. The proposed adaptive CAC scheme utilizes a measurement-based online monitoring approach of the system performance, and a prediction model to determine the amount of bandwidth to be borrowed from calls, or the amount of bandwidth to be returned to calls. The simulation-based performance evaluation of the proposed adaptive CAC scheme shows the strength and effectiveness of our proposed scheme.Usually, a mobile terminal's (MT) request for a service may be denied access based on the nonavailability of resources adequate to the requirements of the service. In this work, the bandwidth allocated to a call is considered the main resource. The mobile terminal's denial of service is referred to as call blocking and its probability as the call blocking probability, P b . However, a mobile terminal may move from one cell to another, while being in active connection. To maintain continuity of the service, the mobile terminal must have a successful handoff from the previous cell to the current cell. A successful handoff of a call to the current cell's base station (BS) is made if the mobile terminal has been granted the required resources for the connection without deterioration of its QoS. The failure of a mobile terminal to have a successful handoff at any point in its path would terminate the call. The probability of a call termination or dropping is called the call dropping probability, P d . We will refer in this work to the duration of a call connection by the call holding time .t c /, and the duration of the time a mobile terminal exists in a cell by the cell residency time .t r / [2].Typically, service providers for wireless cellular networks would strive to achieve high profitability, while being able to maintain users' satisfaction. For the first goal, they would try to maximize the number of admitted calls into the network to ensure efficient bandwidth utilization. For the second, service providers work on minimizing the number of handoff call dropping and new call blocking, and reducing the latency and overheads of call admissions and handoff computations. Finding a compromise between the two conflicting goals is a challenging problem. In this work, we propose a bandwidth borrowing-based adaptive CAC scheme in multiclass service wireless cellular networks that tries to strike a balance between users' satisfaction and profitability. The proposed adaptive scheme achieves its objectives through techniques for rate deg...

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Tiered bandwidth reservation scheme for multimedia wireless networks

Cited by 2 publications

References 15 publications

Comparative analysis of call admission control techniques for efficient resource utilization and QoS in IEEE 802.16e network

Comparative analysis of call admission control techniques for efficient resource utilization and QoS in IEEE 802.16e network

Bandwidth borrowing‐based QoS approach for adaptive call admission control in multiclass traffic wireless cellular networks

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