Redline Communications Inc. SUIIRM 用户手册
Red
MAX
™
Subscriber Modem
SU-I User Manual
70-00078-01-02-DRAFT
Proprietary Redline Communications © 2008
May 12, 2008
Page 15 of 50
Figure 4: System - Non-Line of Sight Deployment
2.2.3 Channelization
The subscriber is a frequency-specific system, with the frequency band defined by the
internal transceiver unit. The use of the operating band must be in accordance with
European Conference of Postal and Telecommunications Administrations (CEPT)
Recommendation 14-03.
internal transceiver unit. The use of the operating band must be in accordance with
European Conference of Postal and Telecommunications Administrations (CEPT)
Recommendation 14-03.
The subscriber divides the available frequency band into channels. Allocation of channels
during deployment is dependent on spectrum availability in the licensed FWA band
(3400-3600 MHz) and local licensing requirements and conditions. Channel selection
allows planners to obtain the maximum geographic coverage, while avoiding frequency
contention in adjacent sectors.
during deployment is dependent on spectrum availability in the licensed FWA band
(3400-3600 MHz) and local licensing requirements and conditions. Channel selection
allows planners to obtain the maximum geographic coverage, while avoiding frequency
contention in adjacent sectors.
2.3 Service
Flows
Service flows are a key feature of the 802.16 standard. A Service Flow represents a
unidirectional data flow having separate QoS settings for uplink and downlink. Service
flows provide the ability to set up multiple connections to each subscriber in a sector.
unidirectional data flow having separate 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.
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.
2.3.1 Service
Flow
Classification
Data packets are forwarded by the subscriber based on classification rules. Classification
rules require examining each packet for pattern matches such as destination address,
source address, or VLAN tag. All classification is defined at the base station and the
classification parameters are downloaded to the subscriber.
rules require examining each packet for pattern matches such as destination address,
source address, or VLAN tag. All classification is defined at the base station and the
classification parameters are downloaded to the subscriber.
A service flow is partially characterized by the following attributes: