Patent ID: 8717907

Claim:
A method related to receiving access signals from terminals over a radio channel that is divided into time slots, and wherein the access signals are transmitted on predefined access signal resources, the method comprising: assigning one or more access signal resources among plural access signal resources to terminals, at least some of the access signal resources being assignable to terminals for use in one or more time slots; keeping a record on non-assigned access signal resources and respective time slots of the non-assignment; identifying a plurality of time slots when one or more of said access signal resources comprising non-assigned access signal resources among the assignable access signal resources are unavailable for carrying an access signal, wherein a detection in any of said time slots of an access signal carried by an unavailable access signal resource is identified as being a false detection; keeping count of a number of false detections and a number of non-assigned access signal resources, and adjusting a threshold level for detection of the access signals, such that a ratio of false detections adapt to a predefined level; wherein the ratio of false detections is a number of identified false detections versus a number of potential false detections, or is said number of false detections versus a number of correct detections; and wherein the number of false detections and the number of potential false detections or number of correct detections are collected during the same period.