Abstract
Several channel de-allocation schemes for GSM/GPRS(General Packet Radio Service) networks are proposed in this paper. For DRA (Dynamical Resource Allocation) with de-allocation mechanism, if a new voice call arrives and finds that all the channels are busy, then one of the GPRS packets which occupy more than one channel for data transmission may release a channel for the new voice call. This paper presents 5 de-allocation mechanisms, i.e. DA-RANDOM, DA-RICHEST, DA-POOREST, DA-OLDEST and DA-YOUNGEST, to select the GPRS packet for releasing the appropriate channel. Simulation results show that DA-OLDEST achieves the best performance, especially in packets blocking probability, among all the de-allocation schemes. Although the performance of the proposed de-allocation schemes is not significantly different, they are all much better than that of the scheme without de-allocation.
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References
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Supported by the NSFC/RGC joint research scheme (No.60218001/N_HKUST617-02).
Communication author: Jiang Tigang, born in 1976, male, Ph.D. Institute of Mobile Communications, Southwest Jiaotong University, Chengdu 610031, China.
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Jiang, T., Fan, P. & Lam, K.Y. Channel de-allocation schemes for GSM/GPRS networks. J. of Electron.(China) 22, 581–585 (2005). https://doi.org/10.1007/BF02687837
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DOI: https://doi.org/10.1007/BF02687837