Patent ID: 8855632
Filing Date: 2014-10-07
Classification: H04W

Abstract:
1. A method of operating a user equipment in a cellular communication system in which radiofrequency resources are partitioned into layers, each layer being associated with one of a set of hierarchical priority levels, the method comprising: while camped on a serving cell whose signals are transmitted on a first layer associated with a first priority level, repeatedly measuring a characteristic of a second layer that is present within the surroundings of the user equipment and generating from these measurements a plurality of measured surroundings data, wherein the second layer is associated with a second priority level that is higher than the first priority level; and ceasing measuring the characteristic of the second layer that is present within the surroundings of the user equipment in response to detecting both that at least one of the measured surroundings data is less than a predetermined threshold level and that a trend of the plurality of measured surroundings data is negative.