Wimax Asn Gw Overview

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1 © 2006 Nokia WiMAX ASN Gateway ppt / 2006-09-29 / BXu

Company Confidential

Nokia WiMAX ASN GatewayMulti-Gigabit Mobility and Security in a Mini Package

Bing Xu Dr. of Tech

Product manager,

Wireless Broadband Business & Product Management



2 © 2006 Nokia V1-Filename.ppt / yyyy-mm-dd / Initials


Contents

• Product Summary• Functionalities

• HW interface

• Operation Management Solution

• Network Resiliency

• ASN Gateway Site Architecture

• Competitive Advantages





Nokia WiMAX ASN Gateway

• Compact indoor network element

• Dimension: 19” width 1 RU height

• Power Supply options

• 110/220 VAC, 50/60 Hz

• -48 VDC

• Capacity

• Traffic forwarding and tunneling:• Up to 2Gbit/s downlink

• Up to 1Gbit/s uplink

• Control plane capacity

• Max 200 wiMAX BS cell

• Max active 100, 000 MS / terminals

• Scalability

• Up to 50 ASN GWs logical connections





Nokia WiMAX ASN Gateway Functionalities

• Data path

• Mobility management• Foreign Agent functionality

• Paging & location management

• Authenticator and Security key distribution

• QoS & service flow management

• Accounting and charging supports• Lawful intercept interface

Nokia WiMAX Solution for DSL type operators

MSS

BS

ASN GW

BSR1

R6

R2

ASN GW

CSNHA

CSN P&CF AAA

R3aaaRadius

R4

R3mipMIP

NetworkManagement

System

(NetAct)

OMS

NWI3

PostpaidCG

BTSO&M ASN-GW O&M

X7

Internet

Subs. DBHLR/ HSS

FW/NAPT

LIG

NTMSTo

MSS

BS

DHCP/DNS

MSSR1

CPE

TE

TE

. . .

. . .

T

X2

LIG

. . .

BTSOM

MSS

BS

ASN GW

BSR1

R6

R2

ASN GW

CSNHA

CSN P&CF AAA

R3aaaRadius

R4

R3mipMIP

NetworkManagement

System

(NetAct)

OMS

NWI3

PostpaidCG

BTSO&M ASN-GW O&M

X7

Internet

Internet

Subs. DBHLR/ HSS

FW/NAPT

LIG

NTMSTo

MSS

BS

DHCP/DNS

MSSR1

CPE

TE

TE

. . .

. . .

T

X2

LIG

. . .

BTSOM

Nokia WiMAX Solution for cellular operators





WiMAX ASN Gateway Functionalities (1)--- Data Path function

Protocol Layer Architecture for IP-CS

• Setting up data path to carry user plane packets (either IP or Ethernet packets) between BS

and ASN over R6 interface or between ASNs over R4 interface. IP tunnel GRE.

LINKPHY

IPMAC

GREIP CS

IPIP

PHYLINK

IP

GRE

IP

PHY

PHY

LINK

IP

IP

ASN GatewayGRE tunnelWiMAX BS

PHY

LINK

IP

IP

IPinIP tunnel HA

• Setting up data path to carry user plane packets between ASN and HA over R3 interface.

Tunnel protocol: IPinIP.

• Manageing the data path setup and includes procedures for data packet transmission control

between two functional elements





WiMAX ASN Gateway Functionalities (2)--- ASN Gateway relevant mobility (handovers)

ASN anchored mobility -anchored FA unchanged

• R6 handover,

• MSS initiated

• network initiated

R8

R6 R6 R6

R4

R3 R3

ASN GW1 ASN GW2

HA

BS1 BS2 BS3

R1

MS

R1

MS

R1

MS

• CSN anchored mobility - anchored FA changed

• R3 handover

• Client MIP – based on a Mobile IP

enabled MS

• Proxy MIP – ASN GW is instanced in the

ASN on behalf of a client that is not MIPaware or MIP capable

• R4 handover

• MSS initiated

• network initiated





WiMAX ASN Gateway Functionalities (7)--- Foreign Agent function (IPv4 only)

Foreign Agent

• Sending FA advertisements

• Responding to agent solicitation messages

• Performing the Registration procedure specified in RFC3344.

• Providing reverse tunnelling & necessary security support.

• Supporting effective binding management





WiMAX ASN Gateway Functionalities (4)--- Paging control and location management

• Paging Controller – administrate activities of idle

mode MS

• Paging Agent – handle interaction between PCand IEEE 802.16e related paging functionalities

• Paging group – one or more Pas reside NAP

boundary

• Location register – database contains location

information of idle mode MS

Location

Register

Paging

Controller

ASN GW 1Location

Register

Paging

Controller

ASN GW 2

R4

PA2 PA3 PA4 PA5PG B

PG C

PA0

PG A

PA1

• PC and LR entry is created when MS enters idlemode. User plane tunnel between FA, data path

and BS removed, but signaling is not impacted.

• LR updated when idle MS cross the boundary of

PG

• LR entry cancelled when the MS exits





WiMAX ASN Gateway Functionalities (5)--- Authenticator and key distributor

• WiMAX uses EAP for authentication and key distribution

• WiMAX four parts EAP model

• ASN GW roles:• Authenticator – to block or accept user traffic according to user’s right.

• Key Distributor - a key holder for both MSK and PMK resulting from an EAP exchange. Itderives AK and creates AKID for an <MSS, BS> pair and distributes the AK to the KeyReceiver in a BS via an AK Transfer protocol.

• BS acts as EAP proxy





WiMAX ASN Gateway Functionalities (8)--- Service flow management

• SFA (Service Flow Authorization)

• To enforce ASN-level policy decisions using

a local policy database and an associated

local policy function (LPF).

Q&S functional model

• To receive service flow establishment

requests from PF and communicates

appropriate action with SFM.

• To translate Service Description parameters

from PF to ASN 802.16e format and

appropriate service profile.

• To communicate with PF in CSN network

using AAA infrastructure. • To update current SFM location (current

Serving BS) as a part of HO process.





WiMAX ASN Gateway Functionalities (9)--- Accounting and charging support

Charging Trigger Function

• To generates charging events based on the observation ofnetwork resource usage

• Offline accounting:

• To collect information for chargeable events,

• To assembly the information into matching charging events,

• To send charging events to Charging Data Function (CDF).

Charging

Trigger

Function

AAA Client

Charging Data

FunctionOnline Charging

Function

CSN

• Online accounting





Nokia WiMAX ASN Gateway HW Interface

• User Plane and Control Plane ports

• 20 x 10/100/1000Base-T Ethernet

• Supported protocols:

• Ethernet II and 802.3 frame formats

• 802.1Q and 802.1ad VLAN

• 802.1P Priority

• V interface

• Management port• 1 x 10/100/1000Base-T Ethernet

• Supported protocols:

• Ethernet II and 802.3 frame formats

• 802.1Q and 802.ad VLAN

• 802.1P Priority

• Debug ports

• 2 x RS232 serial ports with RJ-45 connectors





Nokia WiMAX ASN GW Operation Management Solutions

• O&M Interface Options

• Command Line Interface

• OMS

• NetActTM via OMS

• O&M Functions

• Fault management• Performance management

• Configuration management,

• HW / SW management

• SW license management





Nokia WiMAX ASN Gateway Site Architecture

Physical View

ASN-GW

ASN-GW

ASN-GW

Ethernet Switch

Ethernet Switch

IP Router 1

To BTS

GE19“ Rack

To other

ASN-GW

siteTo CNS





Nokia WiMAX ASN Gateway SW Licenses

• ASN Gateway operating SW license

• ASN Gateway application SW licenses

• ASN GW basic functionality SW package license

• ASN GW mobility license

• ASN GW resiliency supporting license.

• Subscription based data rate limiting license

• ASN GW downlink throughput capacity upgrade license,

• ASN GW’s BS connection capacity upgrade license





Nokia WiMAX ASN Gateway Competitive Advantages

• Wireless high data rate access with mobility

• Lower rollout costs

• Easy capacity upgrades

• Easy installation

• High network level availability

• Optimized service



17 © 2006 Nokia WiMAX ASN Gateway ppt / 2006-09-29 / BXu


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Wimax Asn Gw Overview

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