Redline Communications Inc. AN100UA 用户手册

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Doc. #70-00058-01-01 

Proprietary Redline Communications © 2007 

July 13, 2007 

Page 21 of 117

 

 

When deployed in a PTP configuration the base station establishes a dedicated bi-
directional link to a single subscriber. The PTP deployments typically use a directional 
narrow beam antenna for both ends of the link. 

 

When deployed in a PMP configuration the base station establishes bi-directional links to 
more than one subscriber. PMP deployments typically use a wide beam (sector) antenna 
at the base station and a narrow beam antenna at the subscriber. Service flows are used to 
police service level agreements for each subscriber.  

The RedMAX system supports line-of-sight (LOS), optical line-of-sight (OLOS), and 
non line-of-sight (NLOS) operation. A clear LOS link has no obstacles within 60% of the 
first Fresnel zone of the direct path. An OLOS link has obstructions within 60% of the 
first Fresnel zone, but a visible path exists between the base station and subscriber. Refer 
to the following illustration. 

 

A wireless link is considered non LOS if natural or man-made structures block the visible 
path between the base station and the subscriber. In this case, a wireless link can be 
established only if a reflective path can be established between the base station and 
subscriber.