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BRAN Summary Activity Report 2007 Technical Body Support

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BRAN summary Chairman: Bernd Friedrichs   Background In response to growing market pressure for low-cost, high capacity radio links, ETSI established a standardization project for Broadband Radio Access Networks (BRAN) in the spring of 1997. ETSI BRAN is the successor of the former Sub-Technical Committee RES10 which developed the HIPERLAN/1 specifications. The project prepares standards for equipment providing broadband (25 Mbit/s or more) wireless access to wire-based networks in both private and public environments, operating in either licensed or license exempt spectrum. These systems address both business and residential applications. Fixed wireless access systems are intended as high performance, quick to set up, competitive alternatives for wire-based access systems. The specifications address the physical (PHY) layer as well as the data link control (DLC) layer (with medium access and logical data link control sublayers as appropriate). Interworking specifications, called Convergence Layers, that allow broadband radio systems to interface to existing wired networks, notably those based on ATM, TCP/IP protocol suites and 3G mobile networks. ETSI BRAN assists regulatory bodies with issues such as the requirements for spectrum and the radio conformance specifications that will be required to implement the new broadband radio networks. To ensure overall coherence with other existing and emerging technologies, close relationships have been or are being established with the ATM Forum, the HiperLAN2 Global Forum, the IEEE Wireless LAN Committees P 802.11a and IEEE 802.16, the Internet Engineering Task Force, the MMAC-PC High Speed Wireless Access Systems Group, the International Telecommunication Union Radio sector (ITU-R) and a number of internal ETSI Technical Bodies. BRAN Standards ETSI BRAN currently produces specifications for three major Standard Areas: HiperLAN2, a mobile broadband short-range access network HIPERACCESS, a fixed wireless broadband access network HIPERMAN, a fixed wireless access network which operates below 11 GHz HiperLAN2 HiperLAN/2 will give consumers in corporate, public and home environments wireless access to the Internet and future multimedia, as well as real time video services at speeds of up to 54 Mbit/s. The system will be quick and easy to install and provide interworking with several core networks including the Ethernet, IEEE 1394, and ATM. Visit the HiperLAN2 pages for more information about HiperLAN2. HIPERACCESS The HIPERACCESS Standard Area produces standards for broadband multimedia fixed wireless access. The HIPERACCESS specifications will allow for a flexible and competitive alternative to wired access networks. It will be an interoperable standard, in order to promote a mass market and thereby low cost products. HIPERACCESS is targeting high frequency bands, especially it will be optimized for the 40,5 - 43,5 GHz band. EP BRAN is co-operating closely with IEEE-SA (Working Group 802.16) to harmonize the interoperability standards for broadband multimedia fixed wireless access networks. The groups have appointed Liaison Officers to each other, where the Liaison Officer from either party could attend all group meetings of the other and is provided all group notices, and in addition, is eligible to provide input documents and to recommend document changes with the same privileges of a member. Furthermore, copies of relevant working documents and drafts from either group will be made available royalty-free to the other upon request. The published HIPERACCESS specifications include the HIPERACCESS system overview (ETSI TR 102 003) the HIPERACCESS PHY specification (ETSI TS 101 999) the HIPERACCESS Data Link Control (DLC) Layer (ETSI TS 102 000) the Lonvergence Layers for the cell and packet based core networks (ETSI TS 102 115 and ETSI TS 102 117) Click here for a complete list of HIPERACCESS related work items. HIPERMAN HIPERMAN will be an interoperable broadband fixed wireless access system operating at radio frequencies between 2 GHz and 11 GHz. The HIPERMAN standard is designed for Fixed Wireless Access provisioning to SMEs and residences using the basic MAC (DLC and CLs) of the IEEE 802.16-2001 standard. It has been developed in very close cooperation with IEEE 802.16, such that the HIPERMAN standard and a subset of the IEEE 802.16a-2003 standard will interoperate seamlessly. HIPERMAN is capable of supporting ATM, though the main focus is on IP traffic. It offers various service categories, full Quality of Service, fast connection control management, strong security, fast adaptation of coding, modulation and transmit power to propagation conditions and is capable of non-line-of-sight operation. HIPERMAN enables both PMP and Mesh network configurations. HIPERMAN also supports both FDD and TDD frequency allocations and H-FDD terminals. All this is achieved with a minimum number of options to simplify implementation and interoperability. It should be noted that to specify a complete system, other specifications, e.g. for the Network layer and higher layers are required. These specifications are assumed to be available or to be developed by other bodies. The implementation includes at least one subscriber unit that communicates with a base station via an interoperable radio air interface, the interfaces to external networks, and services transported by the DLC and PHY protocol layers. Click here for more information about HIPERMAN related work items. Glossary ATM Asynchronous Transfer Mode CL Convergence Layer DLC Data Link Control ETSI European Telecommunications Standards Institute HIPERACCESS HIgh PErformance Radio Access HIPERLAN HIgh PErformance Radio LAN HIPERMAN HIgh PErformance Radio Metropolitan Area Networks PHY Physical (layer) RES Radio Equipment and Systems TDMA Time Division Multiple Access

Last updated: 2008-06-06 09:51:24