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System for a base station for providing voice, data, and multimedia services in a wireless local loop system
| Details |
Inventors: Struhsaker, Paul F.; Hudson, Thomas C.;
Assignee: World Access, Inc. (Atlanta, GA)
Primary Examiner: Urban; Edward F.
Assistant Examiner: Tran; Congvan
Attorney, Agent or Firm: Long, Aldridge & Norman LLP
A base station architecture for a Wireless Local Loop (WLL). The architecture provides for use of the base station at the central office and remote location. The base station is designed to support POTS (Plain Old Telephone), ISDN, and direct data service in a point to multi-point configuration. The base station can further provide wired and/or wireless connections. |
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DETAILED DESCRIPTION These and other objects are achieved by a base station architecture having a front end and a back end.
The front end includes a wideband bus and performs network interface, compression, and concentration functions.
The back end includes a subscriber bus and a baseband modem bus and performs modulation and demodulation functions.
The back end may also provide wired access to subscribers.
The wideband and subscriber buses include a plurality of communication channels for carrying subscriber traffic.
The number of communication channels on the wideband bus exceeds the number of communication channel on the subscriber bus.
The front end of the base station includes one or more switches capable of mapping traffic from the wideband bus onto the subscriber bus.
The back end of the base station includes one or more modems for modulating traffic on the subscriber bus for wireless transmission to a subscriber and for demodulating a wireless transmission from a subscriber onto the subscriber bus.
The present invention provides a base station architecture that permits a high degree of flexibility in how the base station may be configured to accommodate a variety of deployment scenarios.
In a first deployment scenario in which demography permits coincident location of the central station and antenna, the front end and back end of the base station are conterminous.
In a second deployment scenario in which demography dictates that the antenna be remotely located away from the central station, the front end of the base station is located in the central station and the back end of the base station is located in a remote location.
A communication link is provided between the front end of the base station and the back end of the base station.
This communication link can include, for example, a microwave back haul, a HDL-driven copper cable, or fiber optic cable.
Alternatively, satellite communication link may be provided.
In a further deployment scenario, the base station according to the present invention provides wired access to a first group of subscribers and wireless access to a second group of subscribers
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