Справочник Пользователя для Moseley Associates Inc EVENTHD

In response to the need for a high-density deployment model the Event-HD uses a 
unique power control technique called A

d

TPC. A

d

TPC enables Event-HD to transmit at the 

minimum power level necessary to maintain a link regardless of the prevailing weather 
and interference conditions. The Event-HD is designed and manufactured to not exceed 

the maximum power allowed. The purpose of power management is to minimize transmit 
power level when lower power levels are sufficient. A

d

TPC also extends the concept of 

power management by controlling not only the power (dBm) of the RF signal, but its 
quality (signal-to-noise ratio) as well. 

In contrast to ATPC, the A

d

TPC technique dynamically adjusts the output power based on 

both the actual strength and quality of the signal. Networked Event-HD radios constantly 
monitor receive power and maintain 10

-12

 BER performance under varying interference 

and climate conditions. Each Event-HD unit can detect when there is a degradation in the 
received signal level of quality and adjust the transmit power level of the far-end Event-

HD unit to correct for it. 

A

d

TPC provides maximum power in periods of heavy interference and fading and 

minimum power when conditions are clear. Minimal transmit power reduces potential for 
co-channel and adjacent channel interference with other RF devices in the service area, 

thereby ensuring maximum frequency re-use. The resulting benefit is that operators are 
able to deploy more Event-HD units in a smaller area. 

All of the Event-HD parameters are accessible in three ways: 

1.  Using a standard web-browser via HTTP to access the built in web server. 

2.  Via SNMP using the fully featured MIB, allowing for automation of data collection 

and network management. 

3.  Via a command line client accessible from a terminal client connected to the serial 

port, or telnet over the NMS Ethernet. 

The GUI (HTTP), SNMP, and CLI interfaces are discussed in detail in the Software Defined 
IDU™ User Interface Manual. 

Each Event-HD radio is configured independently for network parameters such as IP 
address, subnet, and gateway. However, the Event-HD also supports acting as a DHCP 

client, in which case the IP address can be assigned to the Event-HD radio using a DHCP 
server. A specific IP address may be associated with a particular Event-HD radio by 

configuring the DHCP server to serve IP addresses based upon the SDIDU™ Ethernet 
MAC address. 

The Event-HD uses an “Out-of-Band” NMS network which is separated from the payload 
Ethernet network. Each Event-HD contains a managed Layer 2 Ethernet switch that 

supports Spanning-Tree Protocol (STP) for managing NMS traffic. This allows the Event-