802.16 Overview and Coexistence Aspects November 18 doc.: IEEE 802.19 / 0025 November 18 802.16 Overview and Coexistence Aspects Date: 2005-07-20 Authors: Notice: This document has been prepared to assist IEEE 802.19. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.19. Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures <http:// ieee802.org/guides/bylaws/sb-bylaws.pdf>, including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the TAG of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chair <shellhammer@ieee.org> as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE 802.19 TAG. If you have questions, contact the IEEE Patent Committee Administrator at <patcom@ieee.org>. Jose Puthenkulam, Marianna Goldhammer Jose Puthenkulam, Marianna Goldhammer

Outline Brief Overview of 802.16 standard Co-existence Overview November 18 doc.: IEEE 802.19 / 0025 November 18 Outline Brief Overview of 802.16 standard Co-existence Overview Jose Puthenkulam, Marianna Goldhammer Jose Puthenkulam, Marianna Goldhammer

Connection Management Privacy & Key Management November 18 802.16 Protocol Stack Convergence Sub Layer IP Ethernet ATM Packet Classifiers Header Suppression MAC Layer Network Entry PDU Generation PDU Reassembly Connection Management BW Management ARQ Privacy & Key Management PHY Burst Scheduling Handoffs Power Management PHY Layers Single Carrier (10-66GHz & < 11 GHz) OFDM-256 FFT ( < 11GHz) OFDMA (2048,1024,512,128 FFT) ( < 11GHz) (Scalable OFDMA) Jose Puthenkulam, Marianna Goldhammer

802.16-2004 vs 802.16e features November 18 Convergence Sub Layer IP Ethernet ATM Packet Classifiers Header Suppression MAC Layer Network Entry PDU Generation PDU Reassembly Connection Managemt BW Managemt ARQ Privacy & Key Management (PK, EAP, AES, Multicast Security) PHY Burst Scheduling Handoffs Power Managemt (Sleep & Idle Modes) PHY Layers Single Carrier (10-66GHz & < 11 GHz) OFDM-256 FFT (<11GHz) (AAS) OFDMA ( < 11GHz) 2048 FFT mode, Subchannelization Schemes, H-ARQ, AAS, MIMO, STC DL Subchannelization 1024,512,128 FFT modes and symbol structures, HARQ, MIMO, STC enhancements IEEE 802.16-2004 P802.16e (licensed only) Jose Puthenkulam, Marianna Goldhammer

OFDM vs OFDMA OFDM Overall User 1 User 2 User 3 User 4 OFDMA Overall November 18 OFDM vs OFDMA OFDM Clustered subcarrier allocation Multipath diversity limited to the clusters Overall User 1 User 2 User 3 User 4 OFDMA Permutated subcarriers allocation with permutation varying between cells Inter-Cell Interference limited to only some subcarriers Optimal for mobile channels Overall User 1 User 2 User 3 User 4 Jose Puthenkulam, Marianna Goldhammer

OFDMA Frame Structure (TDD) example November 18 OFDMA Frame Structure (TDD) example Jose Puthenkulam, Marianna Goldhammer

MAC PDU Format November 18 Each MAC PDU begins with a 6 bytes generic MAC header. The payload information may vary in length. SS has 48-bit IEEE MAC address (defined in IEEE Std. 802 – 2001) BS has 48-bit base station ID (24 bits operator indicator) Connections are identified by a 16-bit CID. The maximum length of the MAC PDU is 2048 bytes, including header, payload, and cyclic redundancy check (CRC). Jose Puthenkulam, Marianna Goldhammer

Generic MAC Header HT: header type EC: data encryption control November 18 Generic MAC Header HT: header type EC: data encryption control ESF: extended subheader flag CI: CRC indicator EKS: Encryption Key Sequence (index of traffic encryption key) Jose Puthenkulam, Marianna Goldhammer

Network Entry Process November 18 Jose Puthenkulam, Marianna Goldhammer

802.16 MAC Protocol Demand Slot Assignment Protocol November 18 802.16 MAC Protocol Demand Slot Assignment Protocol Supports QoS Service Classes using Service Flows Each Service Flow maintains a logical connection using a Connection Identifier (CID – 16 bits) Subscriber Station (SS) ranges using Ranging Protocol that allows the SS to establish timing synchronization with BS SS always request UL BW Request using MAC Messages DL Channel Descriptors (DCD) and UL Channel Descriptors (UCD) are MAC messages used to convey the burst profile sets that are active DL-MAP and UL-MAP MAC messages provide the burst allocation information Jose Puthenkulam, Marianna Goldhammer

802.16 DFS Operation Mandatory in LE bands November 18 802.16 DFS Operation Mandatory in LE bands Requires BS and SS to support the following DFS procedures: Testing channels for primary users Discontinuing operations after detecting primary users Detecting primary users Scheduling for channel testing Requesting and Reporting measurements Selecting and advertising a new channel Method used to detect is not specified and also RF band specific Jose Puthenkulam, Marianna Goldhammer

802.16 Transmit Power Control November 18 802.16 Transmit Power Control All PHY layers support transmit power control SCa PHY Layer: Monotonic Power Level Range : >= 30db; Min. Step size: 1db OFDM-256 PHY Layer: Monotonic Power Level Range: >= 30db; Min. Step size: 1db OFDMA PHY Layer: Monotonic Power Level Range : >= 45db; Min. Step size: 1db LE bands: Monotonic Power Level Range : >= 30db; Min. Step size: 1db Jose Puthenkulam, Marianna Goldhammer

802.16-2004 MAC DFS Behavior In LE Bands November 18 802.16-2004 MAC DFS Behavior In LE Bands Once BS takes control of channel, it will release it only in the next channel testing cycle No specification on channel testing except clause to meet regulatory requirements As DC-11 GHz is within scope, there is lack of clear definition for consistent co-existence behavior Hence 802.16h! Jose Puthenkulam, Marianna Goldhammer

RF Coexistence info in 802.16-2004 November 18 RF Coexistence info in 802.16-2004 License-exempt bands below 11GHz, duplexing: TDD Power limits: defined by country-specific regulations Channelization: 10 and 20MHz, on a 5MHz grid, from 5 to 6GHz Spectral masks – according to local regulations or to a defined mask ACI / alternate channel rejection: 11/30dB for 16QAM3/4 Jose Puthenkulam, Marianna Goldhammer

November 18 Spectral masks Jose Puthenkulam, Marianna Goldhammer

Coexistence approach in 802.16h draft November 18 Coexistence approach in 802.16h draft MAC frames synchronization Separation of interference in time domain Based on scheduling High capacity and QoS assurance Fairness criteria Radio master sub-frames for every system Coexistence protocol Control of interference levels Distributed architecture Technology independent approach Communication at IP level Other modes are proposed Jose Puthenkulam, Marianna Goldhammer

References IEEE Standard 802.16-2004 IEEE Draft Standard P80216e/D9 November 18 References IEEE Standard 802.16-2004 IEEE Draft Standard P80216e/D9 IEEE Draft Standard P80216-2004/Cor1/D3 80216h-05/013 – (802.16h working document) Jose Puthenkulam, Marianna Goldhammer