Technical Information Brief - AN1 WiMAX ASNGW v4.pdf

CONFIDENTIAL

AIRSPAN Networks Inc. http://www.airspan.com

Technical Information Brief

Airspan Mobile Systems

AN1 WiMAX ASN-GW

June 2012 V4

AN1 WiMAX ASN-GW

Confidential Version 4

1 Introduction The worldwide demand for mobile Internet access – from basic connectivity to presence and advanced multimedia experiences – continues to drive infrastructure build-outs in rural markets, developing countries, and Greenfield networks. Wireless communications enables knowledge workers, regardless of their location, to participate in the global information economy and improve living standards. In parallel, enterprise users seek to deploy 4G wireless technologies for expanded in-door coverage in campus-based picocell applications. 802.16e WiMAX is emerging as a cost effective broadband wireless technology for Greenfield deployments, hard-to-reach locations, or markets with low penetration of wireline services. WiMAX networks are being planned and provisioned in a way that optimises subscriber ARPU while dramatically reducing the payback period on packet infrastructure investments. The AN1 platform is designed to meet these WiMAX connectivity requirements with a cost-effective, yet robust platform that features high performance and intelligence. The AN1 platform is designed in a form factor that will economically accelerate service velocity for service providers in these emerging market segments without sacrificing functionality.

AN1 WiMAX ASN-GW


2 WiMAX Access Solutions

2.1 Coverage vs Capacity Networks The AN1 platform provides an ideal entry level footprint for distributed coverage WiMAX applications with a modest number of subscribers and data throughput requirements. As opposed to centralised capacity applications for large established network installations, a distributed coverage architecture offers a cost effective choice for emerging applications, such as, rural networks, picocell applications, small municipalities or hotzones, and even cable MSO sites. In many low density emerging market applications, backhaul is potentially a major expense. It is advantageous to flatten the network by deploying the AN1, functioning as an Access Service Node (ASN) Gateway, at the radio site or in a regional switching location creating a distributed architecture for deployment of a wide variety of applications in emerging markets.

Figure 1: AN1 platform used in distributed coverage applications for developing countries, rural

operators, picocell applications, small hotzones, and cable MSO sites

Figure 2: Traditional centralised capacity applications for Tier I/II networks and large metropolitan hot

zones

AN1 WiMAX ASN-GW


The AN1 platform is an ideal subscriber mobility gateway for Mobile WiMAX radio access networks. The ASN Gateway and Home Agent (HA) functions deployed on an AN1 are designed to support connection and mobility management across cell sites through processing of subscriber control and bearer data traffic. The ASN Gateway serves as the Extensible Authentication Protocol (EAP) authenticator and mobility key holder for subscriber connections and RADIUS client to attached AAA servers. The HA is a router on a mobile node’s home networks that maintains information about the device's current location, as identified in its care-of-address. Each ASN Gateway can concentrate traffic from multiple radio base stations, which reduces the required number of devices under management and AAA transactions while minimising connection setup latency by decreasing the number of call hand-offs in the network.

2.2 Key Features and Benefits

� Full ASN Gateway and HA functionality

� Robust throughput, call transaction rates, packet processing, and memory providing a highly

efficient and effective core network in a small form factor

� Full suite of mobility management capabilities, including CMIP and PMIP v4/v6

� Subscriber and network intelligence typically only found on capacity platforms with deep

packet inspection and application-based routing for In-line Services

� Rugged, carrier grade design meets NEBS/ETSI requirements plus stateful software recovery

AN1 WiMAX ASN-GW


3 Applications

3.1 Broadband Replacement The WiMAX solution deployed on the AN1 Platform offers a cost effective choice for fixed or nomadic wireless DSL deployment models in markets that are underserved by DSL, fibre, or traditional telephone lines. Broadband replacement offers a profitable limited mobility service concept that can be deployed with a modest number of coverage sites. Wireless DSL enables service providers to concentrate on the business of providing WiMAX access infrastructure solutions while enabling wholesale Network Access Point (NAP) sharing services for partner ISP’s and ASP’s. This approach is necessitated by government regulations in many countries which require unbundling the access from the ISP service. To control WAN backhaul expenses between the radio access sites and the WiMAX core network, it is advantageous to further flatten the network by commissioning the ASN Gateway at the radio site or in a regional switching location. In this model, the ASN Gateway provides a Simple IP connectivity service to the end subscriber and offers an equivalent role to the Broadband Remote Access Server (BRAS) in a conventional xDSL application. A common design for the unbundled solution involves a Proxy AAA server in the WiMAX Connectivity Service Network (CSN) that uses realm information in the registered Network Access Identifier (NAI) to forward the call to the Home AAA in the target ISP network and uses L2TP transport from the ASN Gateway to the ISP network. This design permits WiMAX operators to maximise the return on their network investment by wholesaling their access networks to multiple downstream operators, such as, MVNO’s, ISP’s and enterprises.

Figure 3: Wireless Broadband Access

3.2 Enterprise Hotzones/Picocells One of the major challenges reaching enterprise customers is the cost to extend the macro-cellular network for indoor coverage. Additionally, enterprises are seeking higher bandwidth solutions, beyond 802.11g, for internal high speed data networks. Finally, Fixed Mobile Convergence (FMC) applications are becoming an increasingly popular solution for enterprises with mobile work forces. Businesses want anywhere, anytime access and technologies that offer seamless mobility between macro and micro-cellular networks. The low cost and form factor of the AN1 make it an ideal product for next generation managed service offerings. Many enterprise networks now require a network overhaul to meet both the emerging bandwidth and mobility requirements, the AN1 WiMAX solution can be deployed by mobile operators

AN1 WiMAX ASN-GW


to offer managed services to enterprise customers. The AN1 can be deployed at an enterprise location or in a nearby controlled environmental vault providing a managed enterprise picocell (Figure 4).

Figure 4: Enterprise Hotzones/Picocells – WiFi Replacement

3.3 In-line Services As the variety of multimedia services crossing the network increases, the multimedia core network must understand subscriber profiles, the applications or services subscribers are using, and correlate this information with the business policies of the mobile operator. Based on this information, the network will be able to apply different subscriber SLAs and better manage the flow of traffic. This is accomplished through high-touch, deep packet inspection, session steering, and “In-line” Services capabilities. In-line Services integrate appropriate services or applications into the bearer plane at the ASN Gateway, as opposed to off-loading the call to external application servers. In-line Services permits in-line provisioning of essential applications, including; subscriber and application aware billing/reporting, subscriber-aware stateful firewalls, content filtering and intelligent traffic control. In-line Services allow mobile operators to offer new services and easily scale those services while also ensuring efficient traffic flow end-to-end with a simplified network topology.

3.4 Redundancy and Recovery The AN1 is a NEBS Level 3 and ETSI certified platform. The AN1 contains an extensive set of software redundancy features to help ensure the overall availability of platform. The ASN Gateway and Home Agent deployed on the AN1 platform support stateful session recovery for hitless failover protection from software failures. For even greater protection, the AN1 can be deployed in an N+1 or N+M architectures providing a high resilience to hardware faults. In this architecture the Base Station operates sophisticated ASNGW redundancy protection, monitoring the availability of each ASNGW, and autonomously switching between them in the event of failure.

AN1 WiMAX ASN-GW


4 Summary The AN1 platform is ideally suited for distributed coverage applications, such as emerging and Greenfield operators in developing countries, rural markets, and potentially Cable MSO hub sites, with the intelligence and performance required for deploying next generation broadband multimedia services. The platform leverages In-line Services, deep packet inspection and application-based routing expertise to enhance the subscriber experience, revenue generation opportunities and network efficiency. The feature rich WiMAX solution deployed on the AN1 platform includes:

� Single platform support for all functionality, such as, ASN Gateway, Paging, HA and L2TP

� Full suite of mobility management capabilities

� Support for broadband replacement, enterprise applications, and MVNO roaming

� CAPEX and OPEX savings from collocation with RAN reduces backhaul costs

� Software and Hardware failure protection

AN1 WiMAX ASN-GW


5 Appendix A – Product Specifications

5.1 AN1 Hardware Specifications

Requirements Performance Configuration

Size Rack Optimised 2U – 3.45”/17.4”/20” (87.6mm/ 435.3mm/ 508mm)

Power 2 AC or 2 DC Power supplies

CPU Dual Quad-Core 2.83 GHz X86-64

Memory 16 GB DDR2 RAM

Flash SSD 4 GB

Hard Drives Dual redundant 73GB RAID

Remote Management 3 USB 2.0 Ports; 1 serial management

Network Interface 5 Gigabit Ethernet ports

5.2 AN1 Technical Specifications

Scalability Up to 40,000 concurrent, Simple IP, PMIP, or CMIP sessions (ASN & Home Agent)

Throughput 900 Mbps

Calls events per second Up to 500

Interfaces/Connectivity • Simple IP

• Proxy Mobile IPv4

• Client Mobile IPv4

• Intra-ASN mobility

• Inter-ASN mobility (R4)

• CSN anchored mobility (R3)

• RAN interface (R6)

AAA • RADIUS AAA client support o Client o Server groups o Custom dictionaries o Hotlining

• EAP Authenticator o User & device based authentication o EAP-MD5, EAP-PSK, EAP-AKA, EAP-TLS, EAP-

TTLS

• Accounting — per-session, per R6 bearer connection or per-application service flow

IP address allocation • AAA assignment

• Local pools (dynamic or static)

• Overlapping private IP address pools

• Dynamic HA address allocation

• DHCP proxy server

• DHCP Multi-host allocation

VPN and tunnelling • Multiple enterprise-specific contexts or resource pools

• MIP NAT Traversal for WiFi attached subscribers

• L2TP LAC and LNS

• IP-in-IP tunnelling

• GRE tunnelling

• IEEE 802.1q VLANs

AN1 WiMAX ASN-GW


QoS • Network admission control

• Service Flow Authorisation

• Multi-Flow QoS traffic classification

• Intelligent Traffic Control (ITC)

• DiffServ Code point marking/remarking

• Traffic shaping

Routing • RIP

• BGP4

Enhanced applications • Home Agent

• Paging (idle mode support)

• Per-subscriber Stateful firewall

• Lawful intercept

Certifications Safety

• UL60950—Standard for Safety for Information Technology Equipment, 3rd Edition

• European Union EN 60950 (CE Mark) Electrical

• Telcordia GR-1089-Core, Network Equipment-Building System (NEBS) Requirements: Electromagnetic Compatibility and Electrical Safety Criteria for Network Telecommunication Equipment (NEBS Level 3 Certified)

• FCC, Part 15 B, Class A Requirements for Non-residential Equipment

• ETSI EN 300 019

• ETSI 300 386

• ETSI/EN 300 386-2 Electrical Fast Transients

• SBC TP76200MP Environmental

• Telcordia GR-63-Core, Network Equipment-Building System (NEBS) Requirements: Physical Protection

Other

• Taiwan Bureau (BSMI Approval, CNS 13438, Class A and CNS 13436 Safety

• Korea RRL Approval, Class A

• Russia, Gost Approval

• International, CISPR 22, Class A Limit, CISPR 24 Immunity

Compliance • European Commission’s directive 2002/95/EC on the Restriction of the Use of certain Hazardous Substances in Electrical and Electronic Equipment (RoHS)

• European Commission’s directive 2002/96/EC for Waste Electrical and Electronic Equipment (WEEE)

Temperature, operating • +5C to +40C (41F to 104F)

Temperature, short-term operating (<96hrs)

• -5C to 50C

Power Consumption (W): • 374W (full loading, not typical load).

Hear Dissipation • 1276 BTU/Hr Minimum Airflow • 100 CFM

MTBF • 40,600 Hrs for DC

• 42,100 Hrs for AC

Technical Information Brief - AN1 WiMAX ASNGW v4.pdf

Documents

Transcript of Technical Information Brief - AN1 WiMAX ASNGW v4.pdf