摘要:
System performance in a mobile communications system is improved by detecting whether the mobile unit has a particular capability, and adjusting operation of the base station to improve system performance in response to detection that the mobile unit has the particular capability. The capability may be radio reception with lower signal to interference (C/I) requirements. In this case, system performance may be improved by adjusting base station transmitter power to a reduced power range in response to detection that the mobile unit has the particular capability, thereby creating less interference to mobiles that require a higher C/I, and increasing system capacity. Detection may include receiving a signal from the mobile unit, wherein the signal is encoded to indicate whether the mobile station has the particular capability. Alternatively, the signal may be a signal that is encoded to identify from which one of a plurality of mobile units the identifying signal was received. In this instance, the base station uses the identifying signal to retrieve a capability-indicating code from a database, which may be located in the subscriber's home exchange. In another aspect of the invention, a lower of two billing rates is selected for billing a mobile unit in response to detection that the mobile unit has the particular capability. This passes along system savings to the subscriber, and creates an incentive for the subscriber to purchase the usually more expensive mobile unit that has the particular capability.
摘要:
A long distance telephone switching system is adapted to provide various enhanced subscriber services, such as an audio news and information service, conference calling, voice messaging, message storage and forwarding, and speed dialing, in addition to conventional long distance calling. Additional improvements include the use of pre-recorded opening and closing scripts to facilitate the handling of operator-assisted calls, the retrieval of stored subscriber billing data prior to each call reorigination in order to detect instances of possible abuse, and the concatenation of subscriber-input authorization codes with access number data to allow the use of shorter authorization codes by the subscribers.