1 / 31

IEEE 802.16m Air Interface for Fixed and Mobile Broadband Wireless Access Systems – Advanced Air Interface

IEEE 802.16m Air Interface for Fixed and Mobile Broadband Wireless Access Systems – Advanced Air Interface. EECS 766 Resource Sharing for Broadband Access Networks. IEEE 802.16m Air Interface for Fixed and Mobile Broadband Wireless Access Systems-Advanced Air interface Sukeerthi Bokka

filipina
Download Presentation

IEEE 802.16m Air Interface for Fixed and Mobile Broadband Wireless Access Systems – Advanced Air Interface

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. IEEE 802.16m Air Interface for Fixed and Mobile Broadband Wireless Access Systems – Advanced Air Interface

  2. EECS 766Resource Sharing for Broadband Access Networks IEEE 802.16m Air Interface for Fixed and Mobile Broadband Wireless Access Systems-Advanced Air interface Sukeerthi Bokka KUID: 2331058 April 10, 2008 2

  3. Abstract IEEE 802.16m a 4G wireless technology, an amendment to Mobile WiMAX is expected to ensure competitiveness of the evolved air interface with respect to other broadband radio access technologies as well as ensure support and satisfactory performance for emerging advanced services and applications requiring high bitrates, QoS, Bandwidths ensuring Spectrum efficiency and high mobility. This makes use of state of art adaptive modulation and coding techniques, cell sectorization, frequency reuse, advanced air interface antenna technology etc. The MAC and Physical Layers are to provide legacy support to 802.16e. The following gives an overview of the standardization and deployment scenarios of 802.16m. 3

  4. Outline • History and Background • Motivation • Overview and key features of 802.16m • Network Architecture • QoS Requirements General Functional Performance Operational • Physical Layer & MAC Overview General Frame Structure Protocol Architecture • Access Methods & System Level Simulation Requirements • Applications and Services • Constraints • Summary • References 4

  5. History and Background The standard called 802.16 was developed by the IEEE 802.16 Task Group d in 2004. 5

  6. Motivation TITLE: IEEE 802.16m: IEEE standard for Local and Metropolitan area networks-part 16: Air Interface for fixed and Mobile Broadband Wireless Access Systems-Advanced Air Interface. SCOPE: To provide an advanced Air Interface for operation in licensed bands according to cellular Layer requirements of IMT-Advanced Next Generation Mobile Networks. PURPOSE: To provide performance improvements necessary to support future advanced services and applications (ITU Standards). NEED FOR THE PROJECT: Develop an advanced IEEE 802.16 air interface standard by working cooperatively with ITU-R and it’s members. 6

  7. Features of IEEE 802.16m Advanced Air Interface Advanced Antenna Techniques Cell Sectorization Adaptive Frequency Reuse Adaptive Modulation Techniques 7

  8. General Requirements • Meet the IMT-Advanced performance Requirements. • System Requirements for systems comprising of all new MSs and BSs. • Minimize complexity and number of options. • Operating Frequencies: less than 6GHz. • Operating bandwidths: 5-20MHz and more. • Duplex Schemes: TDD and FDD, HFDD. • Both unpaired and paired Frequency Allocations • UL/DL Ratio should be configurable in both TDD and FDD. • Downlink-only configurations on a given carrier. • Advanced Antenna Techniques Minimum 2 Transmit and 2 Receive for BS Minimum 1 Transmit and 2 Receive for MS • Support for Government, Military, Public and Emergency Services. such as call prioritization, pre-emption, push-to-talk 8

  9. Functional Requirements • Peak Data Rate Downlink (BS to MS) > 6.5bps/Hz Uplink (MS to BS) > 2.8bps/Hz 20MHz => 130Mbps • Latency: Lower than 802.16e in all cases. • Data Latency: Downlink 10 ms max and Uplink 10 ms max. • State Transition Latency : idle to active<100ms . • Max Handover Interruption time: Intra Frequency 60 ms and Inter Frequency 150 ms. • QoS: Maintained when switching between RATs (Radio Access Terminal). • Service continuity during handover . • Enhanced Multicast Broadcast service. • Optimized Switching. • High Resolution Location Determination. 9

  10. Performance Requirements • 2x user throughput related to 802.16e. • 2x sector throughput (bps/Hz/Sector) in DL and 1.5x in UL. • 1.5x VOIP Capacity. • Mobility: Optimized for 0-15 Kmph, Marginal degradation 15-120 Kmph, maintain connectivity at 120-350 Kmph. • 3dB improvement in link budget over 802.16e. • Cell Coverage: Optimized for cell sizes upto 5 Km. Graceful degradation in spectral efficiency in 5-30 Km. Functional for 30-100 Km. • E-BMS Services with 4bps/Hz for inter-site distance of 0.5 Km, 2bps/Hz for 1.5 Km. • Both mixed unicast/multicast and dedicated BMS carriers. 10

  11. Operational Requirements • Provide ‘Legacy Support’ to IEEE802.16e • Operate in Legacy 802.16e spectrum • Operate in other legacy RAT spectrums • Co-deployment with other networks 802.16m is anticipated to be deployed in the same RF bands as the legacy networks. Co-deployable is same or overlapping geographical areas with RATs. • 802.16m should provide enhancements to enable multi-hop relays • Synchronize frame timing and frame counters with BSs of the same technology neighboring systems Source:IEEE 802.16m Update : Raj Jain, Washington University, http://www.cse.wustl.edu/~jain/wimax/16m0706.htm[6] 11

  12. IEEE 802.16m Protocol Structure • IEEE 80216m-08_003 : ‘ The Draft IEEE 802.16m Systems Description Document’, Jan. 2008 [1.5] 12

  13. Super-Frame (20ms) Super-Frame Header Idle Time (62.86 us) Frame (5ms) Sub-frame (617.14 us) Normal CP Short CP Long CP General Frame Structure FRAME IEEE C802.16m-08/228r1:’Frame Structure to Support Multiple CP Sizes with Fixed Sub-frame Size’ ,Yungsoo Kim, Jumi Lee, Yu-Seok Kim, Samsung Electronics Co., LTD[1.4] 13

  14. Downlink Subframe Structure IEEE Standard 802.16: ‘A Technical Overview of the WirelessMAN Air Interface for Broadband Wireless Access’,Carl Eklund, Roger B. Marks, Kenneth L. Stanwood & Stanley Wang – 2005 [1.1] 14

  15. Uplink Subframe Structure IEEE Standard 802.16: ‘A Technical Overview of the WirelessMAN Air Interface for Broadband Wireless Access’,Carl Eklund, Roger B. Marks, Kenneth L. Stanwood & Stanley Wang – 2005 [1.1] 15

  16. MAC Frame Format IEEE Standard 802.16: ‘A technical Overview of the WirelessMAN Air Interface for Broadband Wireless Access’,Carl Eklund, Roger B. Marks, Kenneth L. Stanwood & Stanley Wang – 2005 [1.1] 16

  17. Network Architecture Overall Network Architecture IEEE 80216m-08_003 : ‘ The Draft IEEE 802.16m Systems Description Document’, Jan. 2008 [1.5] 17

  18. Network Architecture Relay Station in Overall Network Architecture IEEE 80216m-08_003 : ‘ The Draft IEEE 802.16m Systems Description Document’, Jan. 2008 [1.5] 18

  19. Proposed Network Architecture Propose network structure based on multi cell coordinated relay IEEE C80216m-08_029r2: ‘A novel network structure based on multi cell coordinated relay’, Jan. 2008 [1.7] 19

  20. Network Structure Network structure based on multi cell coordinated relay for 802.16m an illustration of transmission scheme IEEE C80216m-08_029r2: ‘A novel network structure based on multi cell coordinated relay’, Jan. 2008 [1.7] 20

  21. System Level Simulation Assumptions IEEE 80216m-08_004r1: ‘The IEEE 802.16m Evaluation Methodology Document’, Mar 2008 [1.6] 21

  22. System Level Simulation Assumptions IEEE 80216m-08_004r1: ‘The IEEE 802.16m Evaluation Methodology Document’, Mar 2008 [1.6] 22

  23. OFDMA Specifications IEEE 80216m-08_004r1: ‘The IEEE 802.16m Evaluation Methodology Document’, Mar 2008 [1.6] 23

  24. OFDMA Specifications IEEE 80216m-08_004r1: ‘The IEEE 802.16m Evaluation Methodology Document’, Mar 2008 [1.6] 24

  25. Services and Applications • Voice Services : VOIP, Digital Telephony • Data Services : Email, IMS, Web browsing, File Transfer, Internet Gaming • Multimedia Services : Near Real Time Audio/Video Streaming, Broadcast, Interactive conferencing, Digital & Video Telephony • Personal and Enterprise Use : Mobile Internet, VPN, Backhaul 25

  26. Constraints • It has poor backhaul capability. 802.16m is mobile broadband and as such has much more substantial backhaul need. Therefore traditional backhaul solutions are not appropriate. Consequently the role of very high capacity wireless microwave point-to-point backhaul (200 or more MBps with typically 1ms or less delay) is on the rise. Also fiber backhaul may be considered as an alternative. • Other Constraints : Design Constraints, Power Management, fading, interference management, security 26

  27. Summary In summary, the IEEE802.16m [Air Interface for Fixed and Mobile Broadband Wireless Access Systems – Advanced Air Interface] provides for the following services while keeping in consideration legacy support with 802.16e. • Higher peak user rates and aggregate throughput ( up to 100 Mbits/sec) • Increased user and service penetration rates, improve link quality and range • Greater ability to simultaneously support a wide range of multimedia services • Management of different QoS requirements • Improve support of high levels of mobility, while maintaining high spectral efficiency and link rates This is achieved by exploiting the state of art technology trends like • System related technologies ( packet network architecture, platform technologies etc.) • Access network and radio interface ( multiple access schemes, adaptive radio interfaces, antenna technologies etc) • Utilization of spectrum (hierarchical cell structure, adaptive antenna systems & MIMO, spectrum reuse etc) 27

  28. References • http://wirelessman.org/tgm/ [1.0] • IEEE Standard 802.16: ‘A Technical Overview of the WirelessMAN Air Interface for Broadband Wireless Access’,Carl Eklund, Roger B. Marks, Kenneth L. Stanwood & Stanley Wang – 2005 [1.1] • IEEE C802.16m- 07/203r1: ‘Adaptive Frequency Reuse in IEEE 802.16m System ,I-Kang Fu, Pei-Kai Liao and Paul Cheng MediaTek Inc’ – 2007 [1.2] • IEEE C802.16m- 08/200r2:‘ DL/UL Resource Allocation for Improved Intra System Coexistance’ ,Ranga Reddy- 2008 [1.3] • IEEE C802.16m-08/228r1:’Frame Structure to Support Multiple CP Sizes with Fixed Sub-frame Size’ ,Yungsoo Kim, Jumi Lee, Yu-Seok Kim, Samsung Electronics Co., LTD[1.4] • IEEE 80216m-08_003 : ‘ The Draft IEEE 802.16m Systems Description Document’, Jan. 2008 [1.5] • IEEE 80216m-08_004r1: ‘The IEEE 802.16m Evaluation Methodology Document’, Mar 2008 [1.6] • IEEE C80216m-08_029r2: ‘A novel network structure based on multi cell coordinated relay’, Jan. 2008 [1.7] • IEEE C802.16m- 08/200r1:Draft IEEE 802.16m requirements , Mark Cudak (Motorola) 2007 [1.8] • WiMAX Forum White Papers: Deployment of Mobile WiMAX Networks with 3G and WiMAX in IMT-2000, Mar. 2008 http://www.wimaxforum.org/technology/downloads/ [2] 28

  29. References • IEEE 802.16 Published Standards and Drafts, Mar. 2008 http://www.ieee802.org/16/published.html[ 3] • CTIA: WiMAX takes its place in the mobile broadband patchwork, April 2008 http://www.wimaxtrends.com/2008/04/ctia-wimax-takes-its-place-in.html[4] • IEEE802.16m-07 002.pdf , 2007 http://ieee802.org/16/tgm/docs/80216m-07_002.pdf[5] • IEEE 802.16m Update : Raj Jain, Washington University http://www.cse.wustl.edu/~jain/wimax/16m0706.htm[6] • Frank Ohrtman ,Wi MAX Handbook : Building 802.16 Wireless Networks, McGrawHill2005 [7] • Clint Smith, John Meyer 3G Wireless with WiMAX and Wi-Fi, McGraw-Hill 2005 [ 8] • Syed Ahson, Mohammad Ilyas, WiMax Applications, Standards & Security, Technologies Performance Analysis and QoS , Taylor & Francis CRC Press 2008 [10] • Broadband Wireless Access with WiMAX/802.16 : Current Performance Benchmarks and Future Potential: Arunabha Ghosh and David R. Wolter, SCB Labs Inc. Jeffrey G.Andrews & Runhua Chen, Univ. of TX at Austin - 2006 [11] 29

  30. Frequency Reuse IEEE C802.16m- 08/200r1:Draft IEEE 802.16m requirements , Mark Cudak (Motorola) 2007 [1.8] 30

  31. Adaptive Frequency Reuse IEEE C802.16m- 07/203r1: ‘Adaptive Frequency Reuse in IEEE 802.16m System ,I-Kang Fu, Pei-Kai Liao and Paul Cheng MediaTek Inc’ – 2007 [1.2] 31

More Related