Measurement of channel characterisitics in a communication system

The communication system, comprising a groups of the main station transmission data to the slave station downlink data channel and uplink and downlink control channel. Slave and measurement data from one or more characteristic sending a report is electrically connected with the main, wherein the main station in response the report a specified data from operational parameter. Slave and middle of for measurement cycle. Measurement cycle's length or by a slave and a main station transmission by. In one embodiment, a cycle for selecting is fixed by slave station system (V). A any one thirty to determine (604), and a tested of determining (606) is with gone beyond the current measuring cycle: rangeA with gone beyond the range; and reset cycle (608).