Aricent
offers Framing protocols complaint to latest 3GPP
Release’99 specifications. These help OEMs build the
following nodes faster and at lower cost:
- Radio Network Controller (RNC)
- Node B
- 3G MSC
Framing protocol (FP) is a user plane protocol and forms
Layer-1 of the radio network layer of access stratum in a
UMTS network. They provide an important synchronization function
between higher-layer radio access protocols (for example RLC,
MAC) and the timing requirements of the radio transmission
system.
Aricent provides Framing Protocols for following
interfaces:
- Iu –UP (Iu-User Plane)
- Iub
- Iur
Iu –User Plane (Iu-UP) protocol for
the Iu Interface
Iu UP Protocol forms layer 1 of the user plane of the radio
network layer in access stratum. It operates directly on the
transport layer stack at RNC and CN. The data bearer(s) of
transport network user plane provides data transfer services
to the Iu UP layer.
Separate packages of Iu-UP available for the RNC and the
Core Network.
Interfaces
Aricent’ Iu-UP software interface with following components
at RNC and CN side:
Framing Protocol for Iur and Iub
On the Iur and Iub interfaces Framing Protocol is used for
uplink and downlink data transfer.
Framing Protocol for Dedicated Channel enables the RNC to
exchange user data frames with UEs serviced by its own Node
Bs as well as remote Node Bs. The Framing Protocol is also
capable of performing certain control functions like timing
adjustment and synchronization. Updates to the radio parameters
can also be done through FP.
Framing Protocol for Common Transport on Iur interface handles
flow control to RNC, and on Iub interface it handles synchronization
and timing adjustment apart from data transfer between Node
B and RNC for Iub-Common Channel.
Interfaces
The context of different Iur and Iub framing protocols in
UMTS architecture is explained in the figure below:
Compliance
- DCH at RNC
- 3GPP 25.427 v5.1.0 Release 5
- 3GPP 25.427 V4.4.0 Release 4
- 3GPP 25.427 V3.9.0 Release 99
- CCH at RNC
- 3GPP 25.435 v5.5.0 Release 5
- 3GPP 25.435 V4.5.0 Release 4
- 3GPP 25.435 V3.a.0 Release 99
- Iu-UP at RNC
- 3GPP 25.415 v4.3.0 Release 4
- 3GPP 25.415 V3.9.0 Release 99
- DCH ot Node B (Iub)
- 3GPP 25.427 v5.1.0 Release 5
- 3GPP 25.427 V4.4.0Release 4
- 3GPP 25.427 V3.9.0 Release 99
- CCH ot Node B (Iub)
- 3GPP 25.435 v5.5.0 Release 5
- 3GPP 25.435 V4.5.0 Release 4
- 3GPP 25.435 V3.a.0 Release 99
Last updated :
March 9, 2006
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