EURASIP Journal on Wireless Communications and Networking
Managing hotspot regions in wireless/cellular networks with partial coverage picocells
Proceedings of the 6th ACM international symposium on Mobility management and wireless access
Loss performance evaluation in heterogeneous hierarchical networks
Mobility '08 Proceedings of the International Conference on Mobile Technology, Applications, and Systems
ICS'08 Proceedings of the 12th WSEAS international conference on Systems
Adaptive load balance and handoff management strategy for adaptive antenna array wireless networks
ICCOM'08 Proceedings of the 12th WSEAS international conference on Communications
WSEAS TRANSACTIONS on COMMUNICATIONS
An adaptive load balance allocation strategy for small antenna based wireless networks
WSEAS TRANSACTIONS on COMMUNICATIONS
An approximation method for multiservice loss performance in hierarchical networks
ITC20'07 Proceedings of the 20th international teletraffic conference on Managing traffic performance in converged networks
Performance modeling for heterogeneous wireless networks with multiservice overflow traffic
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
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A cellular hierarchical network with heterogeneous traffic is considered, where calls with shorter (longer) average call-holding time are assigned to the associated lower (upper) layer. The main contribution of this paper is that an efficient and reasonably accurate analytical method is proposed to calculate performance measures of interest, i.e., new call-blocking probability and forced termination probability for conversational services, new call-blocking probability, forced termination probability, and the average number of assigned time slots for streaming services. In particular, a simple two-state MMPP(1,2,...,K), that takes into account not only the dependence among overflowed calls of the same class but also the correlation among overflowed calls of different classes, is used to approximate overflowed traffic to reduce computational complexity and improve accuracy. The methods with the multiclass overflowed traffic being approximated as independent Poisson processes and interrupted Poisson processes are also conducted for comparison. Importantly, it is shown via simulation results that the proposed model generates more accurate results than those obtained with the other two approximation methods. Last but not least, the effect of nonuniform traffic density on performance measures is studied via simulation. It is shown that the nonuniform traffic density may have a significant impact on the performance.