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symmetry WiMAX provides broadband wireless access for a variety of fixed and portable applications. The WiMAX Sub Band Controller (WSBC) switches IP packets between the core network and the symmetry WiMAX airlink ensuring that traffic reaches its destination while meeting its QoS parameters.

The WSBC supports all the mandatory WiMAX features. In addition, it also supports the optional WiMAX features (such as Space-Time Coding, Sub-channelling, and ARQ) that allow symmetry to deliver the best-in-class spectral efficiency and the longest NLOS range available in the industry.

The WSBC high-speed packet processing capabilities and state-of-the-art wireless scheduling algorithms eliminate capacity bottle-necks. As a software definable radio, it supports both 802.16-2004 and 802.16e; thus ensuring that in the future, operators can upgrade their networks quickly.

Software Upgradeable RadioHigh-speed ProcessingEliminates Capacity Bottlenecks

EthernetDebug Port

To VLAN Switch(core network)

From NetworkSynchronization Clock

ToRadio

Flash

DDRAMDOR133150 MHz

IntelIXP2350Network

Processor

PCI toClusterBus

Bridge

100BaseT PHY100BaseT PHY

1 PPSSignal

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Link Portto TIC

interface

FEC FPGA

Analog Devices

ADSP-TS201 Processor

TimingGeneration

Figure 1WiMAX PHY Piggyback

ABS4000 WiMAXSBC Module

ABS4000 WiMAX SBC MODULE

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For more information:8150 Trans-Canada Hwy.Montreal, QC H4S 1M5CANADA Tel.: +1 514 335 1210 info@srtelecom.comwww.srtelecom.com

WiMAX SBC MODULE (802.16-2004) SPECIFICATIONSTechnical Characteristics

WiMAX PHY LayerImplemented by the Analog Devices TigerSHARC ADSP-TS201 Processor,the WiMAX SBC modules physical layer:

Provides FDD profiles for 1.75, 3.5 & 7 MHz channel bandwidth. Meets all the mandatory requirements of 802.16-2004. Meets optional WiMAX requirements, including:

Diversity for improved performance under NLOS conditions

Sub-channeling for extended system reach.

GENERAL FEATURES

Physical port RJ-45 100Base-T

Network interface protocol IEEE 802.3

Network segmentation VLAN IEEE 802.1Q/802.1D (802.1p)

Packet switching Low latency Layer-2 switching and policy switching that enables easy inter-working with Routers, Gateways, Firewall/NAT,

IP PBX, Media Gateway, and Demilitarised Zone (DMZ) Host.

Packet filtering Broadcast/Multicast Flood Control

User traffic protocol IPv4, PPPoE, L2TP, PPtP, IPSec, MPLS

Grade of Service (GoS) symmetry NMS includes pre-defined profiles GoS profiles for typical services, such

as residential and business VoIP. All profile settings are configurable, including packet classification rules and criteria, traffic rates, VLAN ID, user priority, and maximum over-subscription ratios.

BS WiMAX IP Dynamic (using DHCP) or staticconfiguration Software maintenance Over-the-air, software upgrade to SS.

Automatic upgrade on power-up.

BS/SS configuration & symmetry NMS, SNMP v2/v3,management protocols Telnet, DHCP & TFTP

MIBs Standard Enhanced for optional features

Test / protocol WiMAX-certified test equipmentanalyser support

PHY LAYER FEATURES

Maximum throughput 6.5 Mbps for 1.75 MHz (at 64 QAM 3/4)(peak sector capacity) 13 Mbps for 3.5 MHz (at 64 QAM 3/4)

Radio access methods FDD, OFDMWiMAX profiles 1.75, 3.5 & 7 MHz in 3.5 GHz bandCyclic prefix support 1/4, 1/8,1/16, and 1/32Diversity Space Time Coding (STC) Maximal Ratio Combining (MRC)

Sub-channelling 2, 4, 8, and 16 channelsForward error correction (FEC) Reed-Solomon, Convolutional Coding

WiMAX MAC LayerImplemented by the Intel IXP2350 Network Processor, the WiMAXSBC modules MAC layer:

Supports mandatory WiMAX MAC features, plus ARQ for improvedchannel efficiency and data throughput.

Has a state-of-the-art wireless scheduling algorithm to ensure thatQoS commitments are met.

MAC LAYER FEATURES

Packet classification Layer 2: IEEE 802.3, IEEE 802.1Q (802.16 compliant and VLAN ID, IEEE 802.1D (802.1p)SR Telecom enhanced) Layer 3: IP, Differentiated Services Code

Point / TOS Layer 4: Port number and/or range

Bandwidth optimisation Payload header suppression

QoS flow support Policy enforcement for each service flow Multiple-service class support for each SS

Traffic conditioning & Traffic priority markingscheduling Per service-flow, class-based queuing

Traffic conformance metering Traffic shaping Congestion control (WRED) 802.16 link scheduling

(UGS, rtPS, nrtPS, BE) Latency and jitter control Automatic Retransmission reQuest (ARQ)

Framing Fragmentation & Defragmentation Packing & Unpacking Encryption & Decryption

Airlink control Network entry and initialisation& maintenance Initial and periodic ranging

SS Configuration Automatic power control Bandwidth allocation Queue management

Intel is a trademark or registered trademark of the Intel Corporation or its subsidiaries in the United States and other countries.