Redline Communications Inc. AN100UA 用户手册
Red
MAX
™
Base Station
User Manual
Doc. #70-00058-01-01
Proprietary Redline Communications © 2007
July 13, 2007
Page 23 of 117
3. A set of QoS parameters specifying the required resources. The principal resource is
bandwidth, but the specification may also include latency requirements.
4. A set of QoS parameters defining the level of service being provided.
2.7.1 Service
Flow
Classification
Data packets are forwarded 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.
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.
2.7.2 Dynamic Service Addition
Service flows are defined and stored in the base station. For each service flow to be
established, the base station sends a setup message to the subscriber specifying the
required set of QoS parameters. The subscriber responds to each request by accepting or
rejecting the setup message.
A service flow may be pre-provisioned or can be dynamically created and deleted
without service outage. This is useful for supporting multiple subscribers in a single
sector. New subscribers can be added and existing subscribers can be removed or have
service levels modified.
Setup messages are sent by the base station following any subscriber power-cycle, loss
and recovery of the wireless link to a subscriber, or any service flow add/delete operation
at the base station.
established, the base station sends a setup message to the subscriber specifying the
required set of QoS parameters. The subscriber responds to each request by accepting or
rejecting the setup message.
A service flow may be pre-provisioned or can be dynamically created and deleted
without service outage. This is useful for supporting multiple subscribers in a single
sector. New subscribers can be added and existing subscribers can be removed or have
service levels modified.
Setup messages are sent by the base station following any subscriber power-cycle, loss
and recovery of the wireless link to a subscriber, or any service flow add/delete operation
at the base station.
2.7.3 Default
Service
Flows
Default UL/DL service flows are created automatically for each registered subscriber.
These service flows are used to pass all traffic not matching any user-defined service
flow (such as broadcast ARP) between the base station and subscribers. The default
service flow capacity is limited for each subscriber.
These service flows are used to pass all traffic not matching any user-defined service
flow (such as broadcast ARP) between the base station and subscribers. The default
service flow capacity is limited for each subscriber.
2.7.4 Scheduling
The base station enforces QoS settings for each service flow by controlling all uplink and
downlink traffic scheduling. This provides non-contention based traffic model with
predictable transmission characteristics. By analyzing the total of requests of all
subscribers, the base station ensures that uplink and downlink traffic conforms with the
current service level agreements (SLAs). Centralized scheduling increases predictability
of traffic, eliminates contention, and provides the maximum opportunity for reducing
overhead.
A regular period is scheduled for subscribers to register with the base station. These
subscribers may be newly commissioned or have been deregistered due to service outage
or interference on the wireless interface. This is the only opportunity for multiple
subscribers to transmit simultaneously.
downlink traffic scheduling. This provides non-contention based traffic model with
predictable transmission characteristics. By analyzing the total of requests of all
subscribers, the base station ensures that uplink and downlink traffic conforms with the
current service level agreements (SLAs). Centralized scheduling increases predictability
of traffic, eliminates contention, and provides the maximum opportunity for reducing
overhead.
A regular period is scheduled for subscribers to register with the base station. These
subscribers may be newly commissioned or have been deregistered due to service outage
or interference on the wireless interface. This is the only opportunity for multiple
subscribers to transmit simultaneously.
Real-Time Polling Service (rt-PS)
The base station schedules a continuous regular series of transmit opportunities for the
subscriber to send variable size data packets. The grant size is based on the current data
transfer requirement. Typical applications include streaming MPEG video or VOIP with
subscriber to send variable size data packets. The grant size is based on the current data
transfer requirement. Typical applications include streaming MPEG video or VOIP with