Ms. Sachiko Yamanaka Profile

Sachiko Yamanaka

at ATR International

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Proceedings Article | 25 October 2005 Paper

Traffic modeling in the integrated cellular ad hoc network system

Sachiko Yamanaka, Katsunori Shimohara

Proceedings Volume 6011, 601107 (2005) https://doi.org/10.1117/12.630318

KEYWORDS: Probability theory, Relays, Systems modeling, Integrated modeling, Networks, Remote sensing, Telecommunications, Wireless communications, Mobile communications, Process modeling

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We present the modeling and evaluation in the integrated cellular and ad hoc network system. The system is modeled using queueing theory and we derive some characteristic values. As regards a system model of two cells, M channels are assigned to each cell and a relay station is set in the overlapped area of two cells. New calls in cellA can be relayed to cellB if the channels in cellA are all busy and the mobile stations are in the covered area by a relay station. Handoff calls select the channels of the cell that the number of empty channels are more in the two cells. If the channels of the both cells are all busy, handoff calls can wait in a queue with the capacity Q while mobile stations are in the handoff area. However, so as not to make handoff calls possess channels prior to new calls, we manage it with the method being different from the other researches. This system is more flexible than cellular networks, the bias of traffic gets smaller and it leads to an efficient channel using. We model and evaluate our system by assuming that the dwelling time is distributed with non-exponential distribution as well as exponential one. In numerical results, we compare the characteristic values in our system with those in non-relaying system, see how the characteristic values are affected when the covered area by a relay station changes, and verify the effectiveness of our system.

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