WCA’s 11th Annual International Symposium & Business Expo San Jose, CA, Jan. 12-14, 2005 Advanced Broadband Wireless Standards from ETSI and Co-operation.

WCA’s 11th Annual International Symposium & Business Expo San Jose, CA, Jan. 12-14, 2005
Advanced Broadband Wireless Standards from ETSI and Co-operation with WiMAX Legal Requirements Copyright Statement Use this statement for presentations where the information will be made public outside Marconi without restrictions. © [Insert year here] [Insert registered company name of the owner of this works e.g. Marconi Singapore Ltd. here]. The Copyright in this document belongs to [Insert registered company name of the owner of this works e.g. Marconi Singapore Ltd. here] and no part of this document should be used or copied without their prior written permission. Legal Statement Use this statement for presentations where the information is confidential and not for public dissemination. It should be used exclusively for use within Marconi and/or where any non-Marconi personnel, like a customer, to whom it is given are expected to treat it as confidential. The Copyright in this confidential document belongs to [Insert registered company name of the owner of this works e.g. Marconi Singapore Ltd. here] and no part of it should be used or copied without their prior written permission. To insert your Copyright or Legal Statement Go to ‘View’ in the top bar, scroll down and select ‘Header and Footer’. Click on ‘Slide’ and then click on ‘Footer’ to activate box. Insert the appropriate legal statement. Prof. Dr. Bernd Friedrichs - Marconi Communications, Germany - ETSI BRAN Chairman

Overview ETSI BRAN structure Status of BRAN HiperAccess and HiperMAN
Details of HiperAccess Technology Relations to standardization bodies and forums Co-operation ETSI - WiMAX Forum Conclusions Bernd Friedrichs, EG/FW-RSE

European Telecommunications Standards Institute
ETSI European Telecommunications Standards Institute ~700 member companies from 55 contries in 5 continents ~11,000 technical standards and deliverables since 1988 ~60 co-operation agreements Market driven organization members decide about work program and resource allocation Established in 1988, as non-profit making organization, based in Sophia Antipolis, Nice Cote d‘Azur (France) Bernd Friedrichs, EG/FW-RSE

ETSI Working Methods Decision Making Open Standardization Process
Members shall endeavour to reach consensus on all issues. If lack of consensus: voting can be performed using individual member company weights ( depending on company revenues, one vote per company, approval requires 71%) Open Standardization Process Each ETSI member can actively or passively participate (incl. voting). All documents and standards are always freely accessible. IPR Policy Each ETSI member has the obligation to inform about Essential IPRs it becomes aware of. IPR owners shall grant irrevocable licenses on FRAND (fair, reasonable and non-discriminatory) terms and conditions. Bernd Friedrichs, EG/FW-RSE

Global Wireless Standards
IEEE 802 ETSI WAN UMTS, EDGE (GSM) WiMAX* MAN HiperMAN & HiperAccess IEEE WirelessMAN LAN HiperLAN/2 RLAN IEEE WirelessLAN WiFi* ETSI HIPERMAN following 256 OFDM mode of a IEEE Bluetooth PAN ETSI BRAN *) Industry fora for promotion and certfication Bernd Friedrichs, EG/FW-RSE

BRAN Structure ETSI BRAN
(Broadband Radio Access Networks) Chairman: Bernd Friedrichs (Marconi) HiperLan/2 (High Performance LAN) HiperAccess (High Performance Access) Fixed broadband wireless PMP system above 11 GHz, single carrier, 120 Mbps HiperMan (High Performance MAN) Fixed broadband wireless PMP system below 11 GHz, OFDM, IP-optimized Wireless LAN at 5 GHz, connection-based, OFDM, 54 Mbps, QoS PHY PHY PHY DLC DLC DLC CL CL Profiles etc. Testing MIB Testing Regulatory Competence Group Spectrum regulatory issues, Harmonized Standards Bernd Friedrichs, EG/FW-RSE

BRAN Status Transition to TC (Technical Commitee) in 2004
ToR (Terms of Reference) BRAN is responsible for all broadband radio (access) systems Several vertical groups for technology-dependent activities Regulatory competence concentrated in horizontal RCWG - to develop Harmonised Standards covering essential requirements under article 3.2 of the R&TTE directive, - to assist regulatory bodies to define spectrum requirements and radio conformance specifications for new broadband radio networks Extensions under discussion Non-interoperable systems (i.e. proprietary, coexistence specs) Transport systems (e.g. classical Point-to-Point hops) Higher layers including network aspects (e.g. IRAP = International Roaming Access Protocols (WiFi)) Other (e.g. WIGWAM = Wireless Gigabit (RLAN) with Advanced Multimedia Support) Merger with ETSI TM4 Bernd Friedrichs, EG/FW-RSE

BRAN Characteristics (1 of 5)
General ETSI Experience GSM, DECT, 3G, Tetra, etc. The working methods and approaches have given very good results in terms of interoperability 3G considers the test specs „very good value for money“ Base standards (for air interface) PHY and DLC layers independet of core network Convergence sublayers for packet- and cell-based core networks Base standards (for network) The successful deployment of large-scale portable or mobile networks requires also the development of interfaces and protocols above the scope of the air interface Work already started on MIB and management Bernd Friedrichs, EG/FW-RSE

Testing Test specifications Normative part of standard Controlled in the open forum in the same way as the base specs Actual testing and certification is left to industry and their associations Test methods Good results from using advanced spec methods and languages For the first time, virtual protocol testing (UDP/IP based, via API) was used, showing the capability to detect and resolve potential problems in implementations before the HW becomes available Bernd Friedrichs, EG/FW-RSE

STFs Testing organization Work is progressed through STF (Special Task Force) STF funded by ETSI, operating under the guidance of BRAN Supported by PTCC (Protocol and Testing Competence Center) BRAN STF All BRAN conformance test specifications were produced in STFs More than 70 documents were published in the last two years About $ 2,000,000 funding was spent for BRAN STFs About $ 520,000 total cost were spent for HiperMAN / WiMAX Bernd Friedrichs, EG/FW-RSE

BRAN Characteristics (4 of 5) Testing - Comparison of Approaches
Interoperability testing = Two implementations trying to interwork Can test only normal behaviour Can test exceptional behaviour only by chance Golden unit testing = An implementation that is somehow representing a standard trying to interwork with an implementation under test Conformance testing = A test tool evaluating an implementation under test Can test both normal and exceptional behaviour Can repeat the specific test any time and any number of times (following corrections for example) ETSI has achieved good results using a combination of conformance testing followed by some level of interoperability testing Bernd Friedrichs, EG/FW-RSE

Standards for Base and Test Specifications Basic protocol standard development Abstract Syntax Notation (ASN.1) message structure specification, ITU-T X.680 Packed encoding rules (PER) for transfer encoding, ITU-T X.691 Message Sequence Charts (MSC) for message flow description, ITU-T Z.120, Specification and Description Language (SDL) specification, ITU-T Z SDL models used to precisely define the protocol behaviour Simulations and validations to early remove ambiguities and erroneous protocol behaviour. Protocol test specifications (ITU-T X , ISO/IEC 9646) PICS Protocol Implementation Conformance Statement TSS & TP Test Suite Structure and Test Purposes ATS Abstract Test Suite (TTCN) - Significant effort was spent (30 man month of funded expert work plus voluntary contribution by member companies and ETSI PTCC work) Radio test specifications RCT Radio Conformance Test EN Harmonized Standard (European Norm), covering the essential requirements of article 3.2 of the EC R&TTE Directives Bernd Friedrichs, EG/FW-RSE

BRAN HiperAccess (1 of 4) Overview
Main applications Cellular backhauling SOHO, SME Typically too expensive for residential access / WLL / LMDS ETSI BRAN developed protocol stack and radio specifications Optimized for ATM and Ethernet Strong points Suitable for immediate deployment in GSM and UMTS networks Technical quality Precision of specification Well controlled optional features Absence of ambiguities Test specifications with ETSI strength (MBS2) High spectral efficieny, high QoS, high reliability Bernd Friedrichs, EG/FW-RSE

BRAN HiperAccess (2 of 4) Set of Specifications
in total ~2000 pages Bernd Friedrichs, EG/FW-RSE

Basic Features PHY Layer
BRAN HiperAccess (3 of 4) Basic Features PHY Layer Focus on frequency bands GHz GHz GHz GHz other lower frequencies Channel size = 28 MHz, Baudrate = 22.4 MBaud Paired bands (FDD mode, fixed asymmetric rates) Unpaired bands (TDD mode, adaptive asymmetric rates) Optimum trade-off between costs, peak data rate and statistical multiplex gain Important parameters Bernd Friedrichs, EG/FW-RSE

BRAN HiperAccess (4 of 4) Achievements and Plans
High stability of base and test specifications achieved Only minor corrections expected in 2005 Further harmonization with IEEE WirelessMAN-SC Commercial roll-out First BRAN-compliant product was rolled-out in December 2004 (Point-to-Point derivative of HA) Full HiperAccess-compliant products will be available in 2005 High interest from numerous operators Bernd Friedrichs, EG/FW-RSE

Time Division Multiplex (TDM) in Downlink,
Time Division Multiplex Access (TDMA) in Uplink TDM downlink AT 1 TDMA uplink AT 1 2 3 AP ... AT 2 AP 1 AT 2 MAC PDU MAC PDU MAC PDU MAC PDU 5 ... ... 4 AT n AT n 5 4 3 2 1 t Further important properties of downlink and uplink Wir sehen hier das Prinzip von TDM und TDMA für den DL and UL. - in the DL the base transmits a stream of packets, all terminals receive all packets to maintain synchronisation, but only the dedicated packets are further processed. - for the UL the BS determines for each time slot which terminals is allowed to transmit, so that two terminals do not transmit at the same to avoid collisions. This applies to radio links, where a radio link can carry several connections. Bernd Friedrichs, EG/FW-RSE

Transceiver Chain Burst Symbol stream MAC PDU MAC PDU MAC PDU MAC PDU
Operation on groups of MAC PDUs corresponding to RS CWs, UL only Operation on complete frame except preamble(s), initiated per frame Including trellis termination for each RS CW, only present for some PHY modes One preamble for one or several FEC blocks Only payload of unicast MAC data PDUs is encrypted Up to four MAC PDUs per RS CW Preambles with QPSK Inner Convol. Encoder ARQ TX buffer Outer RS Encoder Insert Preamble from data interface Encryption Scrambling Modulation Burst Request for ARQ re-transmission Symbol stream (cont.in DL, bursty in UL) MAC PDU MAC PDU MAC PDU MAC PDU RS codeword FEC block Radio link (physical channel) RS error detection flag for ARQ Burst Inner Convol. Decoder Remove Preamble, Equalizer ARQ RX buffer Outer RS Decoder De- Modulation to data interface Decryption Descrambler Bernd Friedrichs, EG/FW-RSE

Definition, Robustness vs. Efficiency
PHY Modes (1 of 9) Definition, Robustness vs. Efficiency Infobits Codebits Symbols Waveforms RS- encoder Convol. encoder Modulator (2M-ary) Pulse shaping PHY mode defined by concatenated coding and modulation (where „PHY“ refers to the physical layer of OSI model) Bernd Friedrichs, EG/FW-RSE

Frame Structure Overview
Preamble TDM zone Control zone (PHY mode # 0) PHY mode #1 region PHY mode #2 region PHY mode #3 region PHY mode #4 region Frame padding Downlink frame Broadcast Frame Info Control zone enlarged Downlink map ARQ map Uplink map Uplink frame to frame # (N-2) frame offset Invited ranging bursts Bandwidth request contention window Granted UL burst Granted UL burst Granted UL burst Granted UL burst Order of ranging burst and contention window is just an example Bernd Friedrichs, EG/FW-RSE

DL Frame with Concatenated Coding
PHY Modes (3 of 9) DL Frame with Concatenated Coding Remarks: ATM cells and DLC messages are aligned to PDUs, IP packets are segmented to PDUs PDUs are aligned to RS blocks Block structure preserved by terminated convolutional coding Code blocks are aligned to symbols and regions (DL) and bursts (UL) Advantages: error detection and ARQ Bernd Friedrichs, EG/FW-RSE

PHY Modes (4 of 9) Maximum Range per Mode
Maximum d, PTx and pavailability are related as >1 I is time-variant mainly dependent on Lrain is time-variant Stand-alone cells (without interference from adjacent cells, without DL ATPC) Clear sky Rain fading Mode 4 Mode 3 Mode 2 Mode 1 Link loss Cell radius Bernd Friedrichs, EG/FW-RSE

Adaptive Operation Adaptation according to d = distance (fixed)
I = interference (slow in DL, fast in UL) N = noise (representing link budget C/N) Lrain = rain fading (fast, 20 dB/s) Mechanisms PHY mode change per terminal PHY mode change per frame combined with ATPC (Adaptive Transmit Power Control) Control loop decided centrally by AP based on measurement reports from AT received signal in AP commanded as announcement in DL map for DL, granted per UL map for UL Bernd Friedrichs, EG/FW-RSE

Free-Space Pathloss and Rain Fading
Radio Link Model (6 of 8) Free-Space Pathloss and Rain Fading 42 GHz Lfree = Pathloss 32 GHz 26 GHz 42 GHz 32 GHz 26 GHz Lrain=Rain fading Bernd Friedrichs, EG/FW-RSE

Throughput, Range vs. Availability @ 28 GHz
PHY Modes (5 of 9) Throughput, Range vs. 28 GHz 6.5 km @ 99.9% Clear sky 99 % 99.9 % % 99.99 % Bernd Friedrichs, EG/FW-RSE

Interference in Downlink and Uplink
DL worst sector (C/I)min = 20*log(5) = 14.0 dB UL worst sector Interference degradation typically depends on direction a sector may have poor properties for DL but good properties for UL interference is time-invariant for DL and time-variant for UL Bernd Friedrichs, EG/FW-RSE

C/(N+I) Pattern for 5x5 Rectangular Constellation (Downlink, ClearSky, ReUseFactor=4)
worst sector enlarged Bernd Friedrichs, EG/FW-RSE

C/(N+I)~C/N Pattern for 5x5 Rectangular Constellation (Downlink, RainFading, ReUseFactor=4)
Bernd Friedrichs, EG/FW-RSE

CDFs for 5x5 Rectangular Constellation (Downlink, ClearSky, ReUseFactor=4)
Bernd Friedrichs, EG/FW-RSE

Marconi’s Radio Network Planning Tool
(Realistic Constellation with 142 Sectors) Input: Base station sites Coverage Traffic load Output: Sectorization Carrier frequencies (2) Polarization (coloured) Interference critical zone = 1.4% of coverage (blue) Bernd Friedrichs, EG/FW-RSE

Detailed Layer Structure
ATM cells (53byte) IP packets (variable length) CL Cell-based CL Packet-based CL 51byte DLC SDU (fixed length) Radio link control Initiali- zation control Connec- tion control Security control MAC management connections Traffic data connections DLC ASN1 coding SAR sublayer ARQ sublayer (UL) MAC sublayer byte PDU Encryption Scrambling Reed-Solomon Encoding Convolutional Encoding Modulation Decryption Descrambling Reed-Solomon Decoding Convolutional Decoding Demodulation PHY Radio channel (above 11 GHz) Bernd Friedrichs, EG/FW-RSE

... Realization of high Multiplex Gain requires
efficient and fast Bandwidth Allocation Schemes Frequency planning (Blocking of PHY modes) Uplink scheduler (use of grants) AT 1 AP CAC Downlink scheduler (for carrier) ... Uplink scheduler (use of grants) AT n Uplink scheduler (for carrier) CAC = connection admission control Downlink allocation (central in AP) Uplink allocation (distributed, mainly in AP) Requests per connection aggregate (various mechanisms) via DL map (no action from AT) Grants per terminal via UL map Bernd Friedrichs, EG/FW-RSE

Example of ASN.1 Base Specification
PhyModeSetDescriptor ::= SEQUENCE { psdi Psdi, bit downlinkPhyThresholdsList PhyThresholdsList, variable uplinkPowerModChangeListNonTc UplinkPowerModChangeList, -- variable uplinkPowerModChangeListTc UplinkPowerModChangeList -- variable } Psdi ::= INTEGER {phyModeSet1 (1), phyModeSet2 (2)} (0..15) bit PhyThresholdsList ::= SEQUENCE (SIZE(2..7)) OF PhyThresholdPair UplinkPowerModChangeList ::= SEQUENCE (SIZE(1..6)) OF UplinkPowerModChangePair PhyThresholdPair ::= SEQUENCE { upThreshold CnrThreshold, channel quality increase downThreshold CnrThreshold channel quality decrease UplinkPowerModChangePair ::= SEQUENCE { upPowerModChange UplinkPowerModChange, channel quality increase downPowerModChange UplinkPowerModChange channel quality decrease CnrThreshold ::= INTEGER(0..255) -- 8 bit,granu=0.25dB,range=[4,40]dB,absolute UplinkPowerModChange ::= INTEGER(0..32) bit,granu=0.5dB, range=[ -8, +8]dB Bernd Friedrichs, EG/FW-RSE

BRAN HiperMAN (1 of 2) Overview
Main applications First release: FWA below 11 GHz Residential (self installation), SOHO, SME (wireless DSL) Mesh radio networks (radio based routers) Features (100% selected by WiMAX Forum) Optimized for IP traffic, full QoS support Both FDD and TDD, including H-FDD CPE High spectral efficiency and data rates, up to 25 Mbit/s in 7 MHz Adaptive modulation (from QPSK to 64-QAM) Interoperability profiles for 1.75 MHz, 3.5 MHz and 7 MHz Uplink OFDMA (high cell radius possible, up to 50 km in PMP with directive antenna) Hooks for advanced antenna systems High security TEK encryption algorithms Bernd Friedrichs, EG/FW-RSE

BRAN HiperMAN (2 of 2) Technical Specifications
Standards (published in 2004) ETSI TS PHY layer ETSI TS DLC layer ETSI TS System profiles Functional Requirements ETSI TR System Reference Documents ETSI TR for the band GHz to GHz Drafting activity MIBs for Network Management Test standards (PICS, TSS&TP finished in 2004, ATS) Support for nomadic systems etc. Bernd Friedrichs, EG/FW-RSE

BRAN RCWG Regulatory Competence Working Group
5 GHz Harmonized EN (RLAN) To be used for European type approval in < GHz ETSI EN v GHz high performance RLAN; Harmonized EN covering essential requirements of article 3.2 of the R&TTE Directive 5.8 GHz Harmonized EN (FWA) To be used for European type approval in GHz System Reference Document (HiperMAN) Fixed - nomadic convergence of BWA systems To be used by ECC for more spectrum allocation Bernd Friedrichs, EG/FW-RSE

BRAN Relationship with Other Bodies and Forums
ETSI OCG ETSI TM4 ETSI ERM Bernd Friedrichs, EG/FW-RSE

Relation BRAN - ITU Draft ITU-R Recommendation on Radio Interface Specifications (Requirements and Standards) BRAN and IEEE provide harmonized inputs ITU-D Report on Broadband Technologies (ITU-D Q20/2) BRAN provided input ITU-APT Seminar on BWA (Busan, Korea, Sept. 2004) Presentations from BRAN Vice-Chair Bernd Friedrichs, EG/FW-RSE

Relation BRAN - IEEE802.x (1 of 4)
Overview IEEE 802 ETSI BRAN Remark WLAN promotion: 802.11a WiFi HiperLAN2 H2GF same PHY layer WMAN promotion: 802.16 (10-66 GHz) HiperAccess same PHY layer (except one FEC detail), further harmonization intended (TC layer, protocol stack) 802.16 (<11 GHz) (16e mobile extension) HiperMAN (fixed or nomadic operation) Base spec: HM harmonized with IEEE Test spec: Norm. ref. in IEEE to HM PICS and TSS&TP WiMAX Forum formal co-operation agreement expected soon WPAN 802.15 currently no activities MBWA 802.20 mobile extension for HM tbd. Roaming 802.21 currently no activities Bernd Friedrichs, EG/FW-RSE

Relation BRAN - IEEE802.16 (2 of 4) Mutual Influence HiperMAN - IEEE sub11GHz
Source: Mariana Goldhamer, ITU-APT Seminar on BWA, Busan, Korea, Sept. 2004 Bernd Friedrichs, EG/FW-RSE

Relation BRAN - IEEE802.16 (3 of 4) Coding Scheme
WirelessMAN-SC ETSI BRAN HiperAccess Why different FEC schemes? Same FEC scheme ETSI BRAN HiperMAN IEEE WirelessMAN-OFDM Bernd Friedrichs, EG/FW-RSE

Relation BRAN - IEEE802.16 (4 of 4) MAC Layer
WirelessMAN-SC ETSI BRAN HiperAccess MAC optimized for backhauling Same generic MAC layer ETSI BRAN HiperMAN IEEE WirelessMAN-OFDM Bernd Friedrichs, EG/FW-RSE

Co-operation ETSI - WiMAX (1 of 3)
The Agreement ETSI and WiMAX Forum have a common interest to perform and promote standardization with the aim of a global information infrastructure in avoiding duplication of technical work ETSI and WiMAX Forum co-operate for testing and certification to develop conformance test specifications to validate the test suite Status of Agreement Details of agreement almost agreed (some legal issues to be fixed) Signature expected soon Technical experts are already working on this basis since mid 2004 Bernd Friedrichs, EG/FW-RSE

Details WiMAX Forum set up the certification scheme to assure interoperability of devices control all aspects of certification ETSI is harmonizing and developing HiperMAN test specifications (PICS, TSS&TP, ATS) that could be used for certification offers unique resouces TC MTS (Methods for Testing and Specification) ETSI PTCC (Protocol and Testing Competence Center) ETSI Plugtest Service has proven expertise in testing matters and has proven track record of working with industry fora like WiMAX Conformance and interoperability testing Both complement each other For best probability of interoperability between products - do both! Bernd Friedrichs, EG/FW-RSE

Conformance Testing Process (ISO 9646 Scheme) Test Report logging and analysis Base Standard (or Profile) implementation Product Implementation Under Test Test System testing compilation Executable Test Suite (e.g., C++) Industry validation Req. checklist PICS Test Purposes TSS & TP Test Suite (Test Cases) ATS Continuous interaction between all partners is essential for the process (WiMAX, BRAN, PTCC, STF, test house, test tool vendors, manufacturers) Bernd Friedrichs, EG/FW-RSE

Conclusions Wireless industry needs global standards
ETSI BRAN supports all harmonization efforts with other parallel standardization bodies Co-operation BRAN - IEEE shows what can be achieved how standard bodies can contribute to each other Co-operation BRAN - WiMAX Forum Important signal to the market ETSI benefits from WiMAX marketing and certification strength WiMAX Forum benefits from ETSI experience and work approach ETSI has access to regulatory bodies Bernd Friedrichs, EG/FW-RSE

http://portal.etsi.org/bran (ETSI portal)
For more information ... (ETSI portal) (ETSI PTCC and testing issues) (BRAN Chairman) Bernd Friedrichs, EG/FW-RSE

WCA’s 11th Annual International Symposium & Business Expo San Jose, CA, Jan. 12-14, 2005 Advanced Broadband Wireless Standards from ETSI and Co-operation.

Similar presentations

Presentation on theme: "WCA’s 11th Annual International Symposium & Business Expo San Jose, CA, Jan. 12-14, 2005 Advanced Broadband Wireless Standards from ETSI and Co-operation."— Presentation transcript:

Similar presentations

About project

Feedback

Log in

Auth with social network:

WCA’s 11th Annual International Symposium & Business Expo San Jose, CA, Jan. 12-14, 2005 Advanced Broadband Wireless Standards from ETSI and Co-operation.

Similar presentations

Presentation on theme: "WCA’s 11th Annual International Symposium & Business Expo San Jose, CA, Jan. 12-14, 2005 Advanced Broadband Wireless Standards from ETSI and Co-operation."— Presentation transcript:

Similar presentations

About project

Feedback