Method for determining handover in a multicellular communications system
AssigneeMotorola, Inc.
InventorsPhilip Jones, Howard Thomas, Keith Essam, Andrew Le Fleming
Life of this patent
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Abstract
A method for determining a handover for a mobile station (1) in a multicellular communication system having a serving cell (3), a plurality of neighboring cells (4,5), and at least one control cell where the cells include at least one macrocell (2) and a plurality of microcells. The method includes the steps of comparing the received signal of the control cell with a parameter value.
Claims1
A method for determining handover for a mobile station in a multicellular communications system comprising at least one macrocell and a plurality of microcells and including a serving cell, at least one handover target cell and at least one control cell not being a handover target cell or the serving cell, the method comprising the steps of:
- (a) determining a handover target cell from the at least one handover target cells;
- (b) determining a control cell from the at least one control cells;
- (c) measuring a received signal strength at the mobile station from the handover target cell;
- d) comparing the received signal strength of the handover target cell with a threshold and when the threshold is exceeded;
- (e) setting a timer to expire at the end of time period T;
- (f) measuring a received signal strength at the mobile station from the control cell;
- (g) comparing the received signal strength from the control cell with the received signal strength from the handover target cell during time period T;
- and
- (h) if the strength of the received signal from the control cell exceeds that received from the target cell, effecting a handover to a macrocell,
- (i) if the strength of the signal received from the control cell does not exceed that from the target cell, repeating steps (a) to (g).
Dependencies are inferred from the claim text.