Справочник Пользователя для Redline Communications Inc. AN100UA
Red
MAX
™
Base Station
User Manual
Doc. #70-00058-01-01
Proprietary Redline Communications © 2007
July 13, 2007
Page 22 of 117
Figure 5: System - Non-Line of Sight Deployment
2.6.4 Channelization
The base station is a frequency-specific system, with the frequency band defined by the
modem unit. The use of the operating band must be in accordance with European
Conference of Postal and Telecommunications Administrations (CEPT)
Recommendation 14-03.
The base station divides the available frequency band into channels. Allocation of
channels during deployment is dependent on spectrum availability in the licensed FWA
band and local licensing requirements and conditions. Channel selection allows planners
to obtain the maximum geographic coverage, while avoiding frequency contention in
adjacent sectors.
modem unit. The use of the operating band must be in accordance with European
Conference of Postal and Telecommunications Administrations (CEPT)
Recommendation 14-03.
The base station divides the available frequency band into channels. Allocation of
channels during deployment is dependent on spectrum availability in the licensed FWA
band and local licensing requirements and conditions. Channel selection allows planners
to obtain the maximum geographic coverage, while avoiding frequency contention in
adjacent sectors.
2.7 Service
Flows
Service flows are a key feature of the 802.16 standard.
A service flow represents a unidirectional data flow. Transmitting bidirectional traffic
requires that two service flows be defined: one for the uplink, and another for the
downlink. These service flows can have different QoS settings.
The base station allows multiple service flows to be configured for each subscriber in a
sector. This allows service providers to offer different services, and segregate traffic
flows having different QoS requirements.
A service flow is partially characterized by the following attributes:
1. A 32-bit Service Flow ID (SFID) is assigned to all existing service flows. The SFID
A service flow represents a unidirectional data flow. Transmitting bidirectional traffic
requires that two service flows be defined: one for the uplink, and another for the
downlink. These service flows can have different QoS settings.
The base station allows multiple service flows to be configured for each subscriber in a
sector. This allows service providers to offer different services, and segregate traffic
flows having different QoS requirements.
A service flow is partially characterized by the following attributes:
1. A 32-bit Service Flow ID (SFID) is assigned to all existing service flows. The SFID
serves as the principal identifier for the Service Flow and has an associated direction.
2. A 16-bit Connection ID (CID) is associated with each active SFID (connection
active).