Optimal Resource Allocation and Adaptive Call Admission Control for Voice/Data Integrated Cellular Networks

Abstract

Abstract-Resource allocation and call admission control (CAC) are key management functions in future cellular networks, in order to provide multimedia applications to mobiles users with quality of service (QoS) guarantees and efficient resource utilization. In this paper, we propose and analyze a priority based resource sharing scheme for voice/data integrated cellular networks. The unique features of the proposed scheme are that 1) the maximum resource utilization can be achieved, since all the leftover capacity after serving the high priority voice traffic can be utilized by the data traffic; 2) a Markovian model for the proposed scheme is established, which takes account of the complex interaction of voice and data traffic sharing the total resources; 3) optimal CAC parameters for both voice and data calls are determined, from the perspective of minimizing resource requirement and maximizing new call admission rate, respectively; 4) load adaption and bandwidth allocation adjustment policies are proposed for adaptive CAC to cope with traffic load variations in a wireless mobile environment. Numerical results demonstrate that the proposed CAC scheme is able to simultaneously provide satisfactory QoS to both voice and data users and maintain a relatively high resource utilization in a dynamic traffic load environment. The recent measurement-based modeling shows that the Internet data file size follows a lognormal distribution, instead of the exponential distribution used in our analysis. We use computer simulations to demonstrate that the impact of the lognormal distribution can be compensated for by conservatively applying the Markovian analysis results.Index Terms-Call admission control (CAC), quality-of-service (QoS), resource allocation, voice and data services.

Efficient Resource Allocation for Policy-Based Wireless/Wireline Interworking

“…The mathematical details of the optimal CAC with load adaption and bandwidth adaption are given in [21,22]. Next, we show that the mathematical modeling presented in this section can be readily extended to analyze a cellular/WLAN integrated wireless domain.…”

“…In that case, we have to sacrifice the NBP to guarantee the HDP and OP of the already accepted calls. A procedure to determine the optimal CAC parameters for data traffic is given in [22]. The procedure guarantees the four upper bounds {Q nv , Q hv , Q hd , Q od } and takes necessary steps to minimize B nd .…”

Multi-Level Access Priority Channel Allocation with Time Threshold in Global System for Mobile Communications (GSM) Networks

“…RELATED WORKS Leong et al [22] examine the problem of resource allocation and call admission control (CAC) in the cellular networks, they analyzed priority based resource sharing scheme for voice and data services. The voice service has a high priority over the data service in thier model.…”

“…It is assumed that we are treating homogenous cells, that is, cells that are identical and have the same traffic parameters, so it is enough to investigate one cell, and the handoff effect from the adjacent cells to this cell and from this cell to adjacent cells is described by handoff processes [22]. The total C channels in the cell are dynamically assigned to three pools using Partial Partitioning schemes as shown diagrammatically in Pool 1 has q1 channels for voice traffic exclusively, Pool 2 has q2 channels shared for special voice class, handoff voice and handoff data, Pool 3 has q3 channels for data traffic exclusively, Thus…”

A Markovian Performance Model for Resource Allocation Scheduling on GNU/Linux

“…As mentioned in the related literature ( [1], [2], [3], [4] and [5]) several studies were made on the applicability of Markov models to investigate network technologies and their associated traffic. However, very few discuss the behavior of the front-end computers when the traffic turns into processes in a given operation system.…”