WiMAX Technology and Network Evolution

1
(No Transcript)
2
WiMAX Technology and Network Evolution

• Kamran Etemad, Ph.D.
• Representing WiMAX Forum
• Director, Technology Standards
• Mobility Group, Intel Corporation

3
Wide Range of Usage Models
4
WiMAX Wi-Fi for Mobile Internet

• Wi-Fi -gt best solution for local area
  connectivity
• With up to 450 Mbps throughput, MIMO-enabled
  802.11n enables new local area applications
• Wi-Fi hotspots easy to find in most places
• Mobile WiMAX -gt metropolitan-wide broadband
  coverage
• Offers service providers 3x the latest HSPA (3G)
  capacity today
• Potential to scale to over 20x the capacity of
  todays HSPA via more antennas over time

5
Key Design Consideration for Next Generation
Wireless Networks

• OFDMA based multiple access with scalable
  bandwidth in downlink and uplink
• Advanced antenna technologies allowing
  beamforming and diversity through space-time
  coding and spatial multiplexing (SM).
• Adaptive PHY Layer Design using fast link
  adaptation combined with fast time and frequency
  scheduling.
• All IP flat network architecture supporting
  different deployment models and enabling both
  traditional operator-managed as well as new open
  Internet services.
• Open standard interfaces enabling over the air as
  well as network interoperability in multi-vendor
  deployments.

6
Mobile WiMAX Roadmap
7
Overview of WGs in IEEE and WiMAX Forum
8
802.16e Protocol Structure
9
IEEE802.16e Frame Structure
10
Mobile WiMAX Data Rates (Release 1.0)
11
System Profile Release 1.5

• Following the completion of System Profile
  Release 1.0 and based on new requirements for
  advanced network services and potential market
  opportunities in FDD spectrum, the WiMAX forum
  started the development of an interim Release 1.5
  profile.
• The System profile Release 1.5 is simply an
  extension of Release 1.0 without requiring major
  changes in the underlying IEEE802.16 standards to
  address the following high level strategic goals
• To enable WiMAX Deployment in paired spectrum by
  extending the TDD based system profile to FDD
  mode of operation.
• To add new system profile features and
  improvements needed to enable advanced services,
  such and location based services and
  multicast/broadcast services enabled in network
  release 1.5.
• To Improve MAC layer efficiency with focus on
  lowering MAP overhead especially for VoIP traffic
  and reducing latencies.
• To explore other optional enhancements, such as
  closed loop MIMO, to further improve coverage and
  capacity for low mobility usage.

12
IEEE802.16m and Mobile WiMAX Release 2

• Some of the key enhancements expected in 802.16m
• Higher spectrum efficiency through more advanced
  and higher order MIMO solutions including
  multiuser MIMO as well as lower MAC and PHY
  overhead.
• Higher peak and user data rates using wider band
  carriers (including 20MHz) and multicarrier
  aggregation
• Enhanced coverage in high interference
  environment with improved preamble and control
  channel
• Lower latency through faster MAC/Signaling
• Support for higher mobility through faster
  feedback mechanism and link adaptation
• Flexible spectrum deployments (both FDD and TDD
  support in contiguous and non-contiguous bands)
• Optimizations for improved interworking and
  coexistence with other access technologies such
  as 3G systems, WIFI and Bluetooth.
• Support for integrated multi-hop relay and
  femtocells
• Improved power saving operation
• Enhanced MBS and LBS

13
IEEE Standard Evolution to 16m
Feature IEEE 802.16m (From Approved System Requirements)
RF Bands Below 6 GHz, licensed
Duplexing Modes TDD and FDD/HFDD
Channel Bandwidths 5, 10, 20, others optional BWs
Peak Data Rates (per sector) DL gt 130 Mbps UL gt 56 Mbps (20 MHz, baseline antenna configuration)
Mobility Up to 350 km/h (optimum performance lt 15 km/h)
Latency Link-Layer Access lt 10 ms Handoff lt 50 ms
MIMO Configuration DL 2x2, 2x4, 4x2, 4x4 MIMO UL 1x2, 1x4, 2x2, 2x4, 4x4 MIMO
Peak Spectral efficiency (per sector) Peak DL gt 6.5 bps/Hz UL gt 2.8 bps/Hz
Average User Throughput Cell Edge User Throughput gt 2x Release 1.0
Number of VoIP Active Users gt 60 users/sector/FDD MHz gt 30 users/sector/TDD MHz
16m Standards Completion Expected by end of 2009
Minimum Requirements to be Exceeded by 16m
14
WiMAX Network Highlights

• All flat IP network
• Based on IETF protocols
• Simple, few nodes and extensible
• Supports both IPv4 and IPv6
• Supports all usage models fixed, nomadic, full
  mobility
• Supports infrastructure wholesale models and
  infrastructure sharing
• Support for voice, data and multimedia services
  with pre-provisioned and dynamic QoS
• Interworking with 3GPP/2 and DSL networks

15
WiMAX E2E Protocol reuse IETF Standards

• In broadband, network performance is directly
  impacted by processing speed of bearer plane
• Performance of network infrastructure depends on
• Number of network nodes on the bearer plane
• Packet processing performance of each network
  node
• Regular IETF protocols (packet routing) get
  implemented in ASIC/hardware in network nodes
• WiMAX bearer plane only uses GRE and IP-in-IP
  both of which are widely implemented in ASICs by
  leading vendors
• IETF implementations outperform those of GTP

16
WiMAX Network Architecture
17
WiMAX Network Standards Roadmap
Release 1 (Mar 07)
Release 1, Version 1.3 Sept 08
Release 1 Requirements
Future Release 1 Maintenance Updates
Release 1.5 Requirements
Release 1.5 (Mar 09)
Release 1.5 Maintenance
Release 2.0 Requirements
Release 2.0
2009
2010
2006
2008
2007
2005

• Release 1.5
• ASN Profile B and C Selection
• OTA Provisioning OMA-DM and TR-069
• Normative R8
• PMIP/CMIP 3GPP2 Interworking
• 3GPP Release 8 and pre-Release 8 Interworking
  (single, dual radio)
• Simple IP
• PCC and Dynamic QoS
• Emergency Services
• Lawful Intercept
• Handover data integrity
• RoHC
• Diameter based AAA
• Ethernet services and DSL Interworking
• Fixed/nomadic services
• Advanced IP Services IMS, LBS, USI
• MCBCS (MBS)
• PMIPv6
• WiMAX SIM

• Release 2.0
• Multimedia Session Continuity (MMSC)
• 3GPP/2 Interworking Enhancements
• Femto solution phase 1 (.16e)
• Femto solution phase 2 (.16m)
• Relays
• Network management
• Self Optimizing Networks (SON)
• Device Metric Reporting and Diagnostics
• WiMAX Network Architecture Evolution
• IPv6/4 interworking and IP address scaling
• WiFi-WiMAX interworking

• Release 1
• Mobile and stationary WiMAX base spec
• Network discovery/selection
• IPv4, IPv6 address management
• ASN control/data plane protocols, mobility
• CSN mobility (CMIPv4, PMIPv4, CMIPv6)
• Idle mode and Paging
• Pre-provisioned QoS
• RRM
• Ethernet services
• AAA EAP-based credentials, RADIUS pre- and
  postpaid accounting, roaming
• 3GPP Release 6/7 Interworking
• 3GPP2 Interworking
• ASN profiles A, B and C
• Start of NWIOT (NCT/IIOT) program

18
Key Focus Areas in 4G Evolution

• Performance and Cost Efficiency
• Retail Devices
• Plug and Play Multi-Vendor Networks
• Enable novel Internet based services and business
  models
• New Deployment models Femtocells, Relays, etc.
• Spectrum Challenges
• Coexistence and Interworking
• Question Is there need or motivation for 4G
  Convergence?

19
Thank You