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Aggressive distributed dynamic channel assignment strategies for multi-rate transmission microcellular networks

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3 Author(s)
Cruz-Perez, F.A. ; Electr. Eng. Dept., CINVESTAV-IPN, Mexico City, Mexico ; Lara-Rodriguez, D. ; Lara, M.

We propose an aggressive distributed dynamic channel assignment strategy (DDCA) for multirate transmission microcellular networks. To our knowledge, aggressive DDCA schemes for multi-rate transmission systems have not been considered in the literature. Our proposed strategy prioritize high-rate (new or handoff) calls over the low-rate ones with implicit channel reservation. There are two important problems in the implementation of aggressive DDCA strategies for multi-rate transmission microcellular networks: the channel availability verification and the channel reassignments. We solve the first problem introducing the virtual channel availability verification idea. The second problem is solved limiting to one the number of channel reassignments per (low or high rate) call arrival, to avoid instability. These two solutions also simplify and speed up the proposed resource management strategy. Finally, we evaluate analytically the capacity increase because of the anticipated channel release employed in our strategy

Published in:

Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd  (Volume:2 )

Date of Conference:

2001