Pmp Deployment; Non Line-Of-Sight; Channelization; Service Flows - Siemens RUGGEDCOM WiN5200 User Manual

Chapter 2
Product Description
Section 2.3.2.2

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.
Section 2.3.2.3

Non Line-of-Sight

The WiN5100/WiN5200 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.
Section 2.3.2.4

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.
The CPE divides the available frequency band into channels. Allocation of channels during deployment is
dependent on spectrum availability in the licensed band and local licensing requirements and conditions. Channel
selection allows planners to obtain the maximum geographic coverage, while avoiding frequency contention in
adjacent sectors.
Section 2.3.3

Service Flows

Service flows are a key feature of the 802.16e standard. A service flow represents a unidirectional data flow
having separate Quality of Service (QoS) settings for uplink and downlink. Service flows provide the ability to set
up multiple connections to each subscriber in a sector.
Separate service flows can be established for uplink and downlink traffic, where each service flow is assigned
a unique service level category and separate QoS settings. This feature allows segregation of high-speed/high-
priority traffic from less time-critical flows.
Section 2.3.3.1

Service Flow Classification

Data packets are forwarded based on classification rules. Classification rules examine each packet for pattern
matches such as destination address, source address, IP TOS, or VLAN tag. All classification is defined at the
base station and the classification parameters are downloaded to the subscriber.
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RUGGEDCOM WiN5100/WiN5200
User Guide
PMP Deployment