Application Fact Sheet
Freescale Semiconductor, Inc.
Freescale Semiconductor, Inc...
• Single “platform”
architecture for low-end
to high-end wireless
infrastructure devices
• Comprehensive Wireless
Network Interface (WNI)
reference applications
available for a big jumpstart on development
• Minimize risk as
standards evolve due to
software programmable
• Software reuse enables
greater reliability of
software and greater
development productivity
for OEMs
• True, fine-grained
multiservice support for
high numbers of users
Telecommunications is undergoing extensive change as
media convergence, industry consolidation, Internet and
IP technologies, and mobile communications come
together. As data transmission in cellular systems has
become more important, the push for future systems that
are more data ready (that is, packet-capable) has led to
the establishment of third generation (3G) standards.
However, the cost and delay of deploying the full 3G
standards, such as UMTS and CDMA2000, has spurred
the development of more incremental standards for data
transmission over legacy systems. These are generally
referred to as 2.5G. This technology is expected to precede widespread deployment of the 3G systems.
With the convergence and evolution of the wireless
infrastructure market, vendors are seeking solutions that
will enable them to support increased interworking and
evolution of protocols to minimize market risks.
The wireless infrastructure is rapidly trying to adapt to a
data-oriented world, and consequently 2.5G/3G system
design embodies the following issues:
• Rapidly emerging standards combined with shortened
time-to-market requirements.
• Terminating and converting multiple protocols and
interworking among protocols
Motorola’s C-Port™ network processor (NP) family is well
suited to serve as a base architectural platform for
wireless infrastructure devices, such as base transceiver
stations (BTSs), base station controllers (BSCs), and
mobile switching centers. The C-Port family provides the
programming flexibility to adapt to changing wireless
standards and offers various options to address functional, cost, power, environmental, and density requirements for a range of devices. In addition, the software is
scalable across the C-Port network processors so that
you can reuse your software base in all levels of systems,
whether downstream at the BTS or upstream to switching centers — building software reliability along the
way. This Application Fact Sheet specifically addresses
BSC design.
Both Motorola’s C-3e™ NP and C-5e™ NP are ideal
for BSCs, as they are programmable for virtually any
network interface and protocol, and they provide highfunctional integration including built-in classification and
traffic management capabilities. A key difference is that
the C-3e NP supports up to 3Gbps bandwidth and the
C-5e NP supports up to 5Gbps bandwidth.
Both NPs provide comprehensive protocol support for the
wireless infrastructure, including:
• Large cost of deployment, driving strategies for risk
abatement around upgrades and extensions
• PPP: Multi-Class, Multi-Link, PPP-Mux
• Need for common communications technology at
widely disparate bandwidths (T1 to OC-48c)
• IP: IPv4, IPv6, UDP, RTP, header compression, L4 port
• Difficulty of upgrading existing products designed
using ASICs or ASSPs with microprocessors (costly
and long development cycle)
• T1/E1 framer connection, Ethernet, and OC-3/STM-1
• QoS: ATM TM 4.1 and DiffServ in software
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Wireless Base Station
Controller solution
performing protocol
classification, and QoS
functions between
downstream BTS/NodeB
devices and upstream
mobile switching centers
Further, as protocols evolve, the NPs can be reprogrammed in software to address new requirements.
C-Port NPs support higher-level programming in
C-language with Applications Programming Interfaces
(APIs), enabling fast development of advanced features
by which you may differentiate your products.
With the extensive architectural flexibility of the C-Port
family, a single line card can be designed to interface to
numerous types of PHY modules supporting a vast range
of application requirements. This greatly simplifies system architecture because nearly every interface that a
Radio Access Network (RAN) needs to support can be
based on a common hardware platform.
An example of a line card using a C-3e NP in a BSC is
shown in the diagram. This example shows T1/E1 lines
from a BTS connecting to the C-3e NP through Motorola
TDM adapter technology. The C-3e NP line card then
connects to a mobile switching center through OC-3c/
STM-1. The only components that change for different
interface configurations would be the line interface logic
itself. For example, the C-3e NP could also support
uplinks of Ethernet.
Eight of the C-3e NP’s Channel Processors (CPs) are
available for implementing more advanced networking
functionality. In the example, they are performing AAL-2/
AAL-5 Segmentation and Reassembly (SARing), as well
as IP and ATM traffic management on traffic moving
upstream and downstream through the BSC. For
applications that may require more extensive Quality of
Service (QoS) capabilities, you can add one of Motorola’s
Traffic Management Coprocessors (TMCs), which provides policing, shaping, and scheduling for up to 128k
individual flows.
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To enable a dramatic jump-start on software development for C-Port family-based wireless infrastructure
applications, Motorola is providing a comprehensive set
of reference software called the Wireless Network Interface (WNI). This software provides full data plane support for network interface functions needed to implement
a 2.5G/3G wireless BTS/Node B and a 2.5G/3G wireless
BSC/Radio Network Controller (RNC). WNI software also
incorporates host drivers, APIs (modeled after those
under development by the Network Processor Forum),
and control stack code to streamline data plane and
control plane software integration.
The C-Port family development environment consists of
the following components:
• C-Ware™ Applications Library (CAL) —
Comprehensive set of reference applications for
building networking systems based on Motorola’s
C-Port family, The CAL significantly accelerates
customer software development by providing
extensive reference source code that is instrumented
for and tested with the CST. WNI applications are
included in the CAL.
• C-Ware Software Toolset (CST) — Functional and
performance accurate simulation environment,
standard GNU-based compiler and debugger, GUI
performance analysis tool, traffic scripting tools, and
comprehensive C-Ware APIs.
C-3e NP
5.5 W @ 180 MHz
C-5e NP
9 W @ 266 MHz
5Gbps throughput
C-Ware Software
Web site download of current CST
release (Windows or UNIX)
C-Ware Development
CDS Base Unit (Chassis, Power Supply,
Single Board Computer)
* The CST can be downloaded from
† Ask your sales representative or distributor for details and availability of system modules, which you
order separately.
For high-performance security
Tel: 480-648-2300
[email protected]
For advanced classification
Tel: 613-724-6004
Fax: 613-724-6008
Wind River Systems
For Tornado for Managed Switches
and RTOS
Tel: 800-545-9463
Fax: 510-814-2010
• C-Ware Development System (CDS) — Compact
PCI chassis with Motorola MPC750 Host Application
Module, which can also include NP Switch Modules,
TMC Daughter Cards, and various Physical Interface
Modules (PIMS). Complete hardware reference
designs also available.
Vendors may also select Wind River® Tornado® for
Managed Switches (TMS) to program the host
processor/control plane software. Motorola has established an alliance with Wind River to provide integration
of C-Port network processors with TMS 2.0 supporting
both Layer 2 and Layer 3 services. In addition, the Host
Application Module in the CDS runs VxWorks® on the
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For inquiries about Motorola products, please contact the Motorola Customer Care
Center at 800-521-6247, or visit us online at
© 2003 Motorola. C-3e, C-5, C-5e, C-Port, Q-5, M-5, and C-Ware are trademarks of Motorola Inc. Motorola and the
stylized Motorola logo are registered trademarks of Motorola Inc. All other products or service names are the
property of their owners.
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