| 摘要 |
PCT No. PCT/FI94/00436 Sec. 371 Date May 26, 1995 Sec. 102(e) Date May 26, 1995 PCT Filed Sep. 27, 1994 PCT Pub. No. WO95/09512 PCT Pub. Date Apr. 6, 1995A radio system providing a wireless local loop, including a fixed network having at least one exchange, at least one subscriber database and base stations, and subscriber terminals communicating with the fixed network via a radio path. Each subscriber terminal includes a radio transceiver, a power source with a battery backup unit, a measurer for measuring the signal level and signal quality on the radio path between a base station and the subscriber terminal, and a measurer for measuring the charge level of the battery backup unit of the power source. The subscriber terminal transmits the test results concerning at least one of the battery backup unit and the power supply to the fixed network in a predetermined report message at predetermined intervals or in response to a predetermined test result. The at least one subscriber database of the radio network maintains information about at least one of the charge levels of the batteries and failures in the power supply of the subscriber terminals, and about the signal level and signal quality measured by the subscriber terminal. |
