Combining Positioning and History-based Measurements in Dynamic Guard Channel Schemes

R. Zander and J.M. Karlsson (Sweden)


wireless networks, handover prioritization, admission control, mobility management


Insertion of Guard Channels (GCs) in a cellular network is a way of giving priority to on−going calls by having capacity exclusively reserved for handovers. In advanced GC schemes, positioning or history−based measurements are usually used to determine the need for GCs in the different cells. Herein, a scheme called Predictive and Adaptive Resource Reservation (PARR) combining these two types is introduced. History−based measurements are used for obtaining an initial idea of the call movements in a cell, while positioning is used to adjust the movement predictions of a specific call with time according to its actual movements so far. To improve the accuracy of the history−based predictions, the calls are divided into groups depending on mobility and latest visited cell, where separate measurements are performed for every single group. Simulations show that PARR outperforms a pure history−based scheme.

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