Cisco Cisco Packet Data Gateway (PDG) Fehlerbehebungsanleitung
Policy-Based Management and EV-DO Rev A
Quality of Service in EV-DO Rev A ▀
Cisco ASR 5000 Series Enhanced Feature Configuration Guide ▄
OL-22982-01
Quality of Service in EV-DO Rev A
The QoS feature in Rev A enables a Mobile Node (MN) to negotiate and setup QoS for the air interface with the RAN
while using the PDSN for QoS authorization and classifying user traffic flows. Network entities including the PDSN,
PCF, AAA server, RAN and the mobile are all involved in setting up the desired QoS parameters for the MN. QoS may
be applied for both Simple IP and Mobile IP calls.
while using the PDSN for QoS authorization and classifying user traffic flows. Network entities including the PDSN,
PCF, AAA server, RAN and the mobile are all involved in setting up the desired QoS parameters for the MN. QoS may
be applied for both Simple IP and Mobile IP calls.
The QoS is created in a subscriber profile on the AAA server. When the subscriber is authenticated, the AAA server
passes the subscriber‘s QoS on to the PDSN, which then passes the information on to the PCF. The PCF determines
whether or not to grant the subscriber the QoS.
passes the subscriber‘s QoS on to the PDSN, which then passes the information on to the PCF. The PCF determines
whether or not to grant the subscriber the QoS.
The following graphic shows an EV-DO Rev A network.
Figure 42. EV-DO Rev A Network
The interface between the MN and the RAN can support multiple simultaneous connections of the same or different
packet data service options. These connections are referred to as packet data flows or link flows.
packet data service options. These connections are referred to as packet data flows or link flows.
The three main entities involved in the QoS procedures for Rev A are the MN, RAN and the PDSN. The PDSN
authenticates the MN during call setup and obtains the QoS profile for the subscriber. The PDSN conveys the
subscriber's QoS profile to the PCF using A11 messaging. The PDSN and RAN store the QoS profile attributes.
authenticates the MN during call setup and obtains the QoS profile for the subscriber. The PDSN conveys the
subscriber's QoS profile to the PCF using A11 messaging. The PDSN and RAN store the QoS profile attributes.
Important:
The RAN can map multiple IP flows to a single A10 connection.
When the MN requests QoS parameter setup with the RAN, the RAN verifies the request using a stored QoS profile. If
the subscriber is authorized for the requested QoS parameters, the RAN provides the MN with a granted QoS profile
and also sends the granted QoS profile to the PDSN via A11 messaging. If QoS was granted, the PCF sets up new
auxiliary A10 connections for carrying traffic corresponding to the granted QoS and maps the requested flows over the
the subscriber is authorized for the requested QoS parameters, the RAN provides the MN with a granted QoS profile
and also sends the granted QoS profile to the PDSN via A11 messaging. If QoS was granted, the PCF sets up new
auxiliary A10 connections for carrying traffic corresponding to the granted QoS and maps the requested flows over the