RuggedCom WiN51 Series, Руководство пользователя и инструкция по установке

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WiN5200 Product Description | 21
2.4.6 Convolution Coding Error Correction
Convolution Coding (CC) error correction is enabled for all traffic rates. This low-level
process can correct bursts of errors in received messages and reduce the number of
retransmissions.
2.5 Deployment Models
The CPE supports point to point (PTP) and point to multipoint (PMP) deployment scenarios.
2.5.1 PTP Deployment
When deployed in a PTP configuration the base station establishes a dedicated bidirectional
link to a single subscriber. The PTP deployments typically use a directional narrow beam
antenna for both ends of the link.
2.5.2 PMP Deployment
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.
2.5.3 Non Line-of-Sight
The WinMAX product family supports line-of-sight (LOS) 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.
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.
2.5.4 Channelization
The CPE is a frequency-specific system, with the frequency band defined by the PHY unit.
The use of the operating band must be in accordance with local regulation requirements.