Patent ID: 6990344
Filing Date: 2006-01-24
Classification: H04W

Abstract:
1. A method in a first cellular radio communication network for preparing a measurement order list for transmission to a mobile station operating in a first cell of the first cellular radio communication network, the method comprising the steps of; a) determining whether at least one cell, in a set of cells defined as neighbouring cells to the first cell is incapable of acting as a target for handoff of said mobile station, wherein said set of cells defined as neighboring cells can include cells within a second cellular radio communication network in which the mobile station is allowed to operate, wherein said step of determining comprises the step of comparing characteristics of the cell with required characteristics derived from a subscriber profile stored in a Home Location Register associated with the mobile station, wherein if a neighboring cell is associated with a second cellular radio communication network in which the mobile station is not allowed to operate, the neighboring cell is automatically determined to be incapable of acting as a target for handoff; b) generating the measurement order list by including in the measurement order list control channels associated with cells in the set of neighbouring cells while, if at least one cell incapable of acting as a target for handoff was found at step a), omitting at least one control channel associated with such a cell from the measurement order list.