Enhanced handover procedure

摘要

The invention relates to a handover method for redirecting an ongoing communication of a connected cellular device (UE) from a serving cell (SRV_C) to a target cell (TGT_C). Both cells (SRV_C, TGT_C) belong to a network. The method comprises receiving, in the connected cellular device (UE), a cell attenuation measurement, a supplemental hysteresis parameter which value depends on the load of the target cell (TGT_C), and a threshold parameter. The method comprises comparing, in the connected cellular device (UE), an additive combination of the cell attenuation measurement, of a hysteresis parameter and of the supplemental hysteresis parameter with the threshold parameter. The method comprises sending, from the connected cellular device (UE), a measurement report to the network, if the result of the comparison remains positive during a given duration. The invention also relates to a cellular device (UE) and to a computer program implementing the aforementioned method.

主权项

1. A handover method for redirecting an ongoing communication of a connected cellular device from a serving cell to a target cell, both cells belonging to a network, wherein the method comprises:
(a) receiving, in the cellular device, a cell attenuation measurement, (b) receiving, in the cellular device, a supplemental hysteresis parameter which value depends on the load of the target cell, (c) receiving, in the cellular device, a threshold parameter, (d) comparing, in the cellular device, an additive combination of the cell attenuation measurement, of a hysteresis parameter and of the supplemental hysteresis parameter with the threshold parameter, and (e) sending a measurement report from the cellular device to the network when the result of the comparison remains positive during a given duration, wherein for a serving cell attenuation measurement the result remains positive when the additive combination is below the threshold parameter and for a target cell attenuation measurement the result remains positive when the additive combination is above the threshold parameter, wherein when the result does not remain positive during a given duration the cellular device remains in the serving cell, wherein the value of the duration in step (e) is dependent on the load of the target cell and a time to trigger (TTT) parameter.