Ovrrbu-bts. Pdf
tải về 0.71 Mb. Chế độ xem pdf
|
- Điều hướng trang này:
- 1.3.3 Base Transceiver Station - Mechanical
- AirLink 8000 1/30/00 BASE TRANSCEIVER STATION Release 1.00 2 - 9 1.3.4 Eagle Management Suite
- 1.3.5 Customer Premises Equipment
| AirLink 8000
1/30/00 BASE TRANSCEIVER STATION Release 1.00 2 - 8 1.3.2 Base Transceiver Station The BTS consists of a standard front access 19” telephony equipment rack (31U high), populated with up to four equipment subracks. The subracks provide all the functionality required to interface to the DSCO and may include the electronics for 1 or 2 Radio Base Units (RBUs) which provide radio communication to all CPE within a cell or sector. The RBUs are connected to external antennas that communicate with the SUs. 1.3.3 Base Transceiver Station - Mechanical The antennas can be located up to 100 meters from the BTS using a 50 W coaxial cable. The antenna location is chosen to optimize transmission characteristics to the served SUs (principally line of sight). The RBU is fully redundant and all field replaceable units are hot-swappable. RBU accepts 48 or 60 VDC power with 15% tolerance. Base Transceiver Station - Mechanical AirLink 8000 1/30/00 BASE TRANSCEIVER STATION Release 1.00 2 - 9 1.3.4 Eagle Management Suite The EMS is a personal computer based platform that is used to provide all the Operations, Administration, Maintenance, and Provisioning (OAM&P) control for the system. The EMS is hosted on a Windows NT ® compatible PC platform and uses a Graphical User Interface (GUI) to facilitate operator inputs and report system information. Functions managed by the EMS include initiation, control, and data logging of all system wide tests, alarm reporting, operator entry of system parameters, and entry and maintenance of subscriber information such as priority, ID, and phone number. The EMS also acts as the administration terminal for system configuration and reporting. 1.3.5 Customer Premises Equipment The Customer Premises Equipment consists of three separate hardware units — the Subscriber Unit (SU), the Network Termination Unit (NTU) and the Uninterruptible Power Supply (UPS). All of the CPE units are located at or near the end user’s location. A typical installation would find the SU located on an exterior wall or rooftop to enable wireless communication with the RBU antenna, the NTU mounted at a ground accessible exterior point on the customer building, and the UPS located within the building. |