FOR IMMEDIATE RELEASE
May 11, 2009
Arlington, Va. – The Telecommunications Industry Association (TIA), the leader in advocacy, standards development, business development and intelligence for the information and communications technology (ICT) industry, recently released TIA-1121.011 Physical Layer for Ultra Mobile Broadband™ (UMB™) TDD Air Interface Specification and TIA-1121.012 Medium Access Control for Ultra Mobile Broadband (UMB) TDD Air Interface Specification.
TIA-1121.011 includes basic physical layer protocol of the UMB Time Division Duplex (TDD) air interface standard, including requirements for:
TIA-1121.012 defines the medium access control (MAC) layer protocols. This standard defines the normative behavior of the MAC layer by describing the precise processing rules for each of the MAC layer entities that are affected by the duplexing mode. This volume consists of the following sections:
Other parts of the TIA-1121 standard include:
Other standards may be required to implement this system and are listed in the references section of each part.
These standards provide a specification for land mobile wireless systems based upon cellular principles and are part of the IMT-2000 CDMA Multi-Carrier, IMT-2000 CDMA MC, also known as cdma2000®.
Both TIA-1121.011 and TIA-1121.012 were formulated under the cognizance of TIA Engineering Committee TR-45 Mobile & Personal Communications Systems, TR-45.5 Subcommittee on Spread Spectrum Digital Technology. To learn more about how to participate in standards development with TIA, please contact Stephanie Montgomery at smontgomery@tiaonline.org.
To obtain copies of the document, contact IHS International at +1.800.854.7179 (United States and Canada); +1.303.397.7796 (international) or visit global.ihs.com.
For technical information, please contact Peter Bogard at pbogard@tiaonline.org. For media inquiries, please contact Mike Snyder: msnyder@tiaonline.org.
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TR-45 member companies include: Aeroflex; Agilent Technologies, Inc.; AirCell, LLC; Airvana, Inc.; Alcatel-Lucent; ALLTEL Communications, Inc.; Apple; AT&T; Bell Canada; Bridgewater Systems Inc.; Camiant; CDMA Development Group; Cingular Wireless; Cisco Systems, Inc.; CML Microcircuits (USA) Inc.; CommFlow Resources Inc.; CSI Telecommunications; Defense Information Systems Agency; DoCoMo Communications Lab USA, Inc.; Dolby Laboratories Inc.; Ericsson Inc.; ETI Connect; FBI; FTR&D LLC; Fujitsu Network Communications, Inc.; Gemalto INC; Hitachi Telecom (USA) Inc.; Huawei Technologies USA; Hughes Network Systems, LLC; I'M Technologies Ltd.; Intel Corporation; Intellon; Intrado; IP Fabrics; Kyocera Sanyo Telecom, Inc.; LG InfoComm U.S.A., Inc.; Lockheed Martin Corporation; Marketing Information Technologies, Inc. (MIT); Maz-Sky Canadian International Group, Inc.; Motorola, Inc.; Movius Interactive Corporation; National Communications System; NeuStar Inc.; Nokia Siemens Networks; Nokia, Inc.; Nortel Networks; ORCA SYSTEMS, INC.; Panasonic Computer Solutions Company; Prysmian Cables and Systems; QUALCOMM; Research In Motion Corporation; Rogers Wireless; Rohde & Schwarz, Inc.; RTKL Associates Inc.; Samsung Electronics; Samsung Telecom America; Sharp Laboratories of America; Sierra Wireless America, Inc.; Sigma Delta Communications, Inc.; Space Data Corporation; Spirent Communications; Sprint Nextel; SS8 Networks, Inc.; Starent Networks Corporation; Tatara Systems; Telcordia Technologies; TeleCommunication Systems, Inc.; Telus Mobility; Texas Instruments, Inc.; US Cellular; UTStarcom, Inc.; Verizon Wireless; VIA Telecom; ZTE USA, Inc.
About TIA
The Telecommunications Industry Association (TIA) represents the global information and communications technology (ICT) industry through standards development, advocacy, tradeshows, business opportunities, market intelligence and world-wide environmental regulatory analysis. With roots dating back to 1924, TIA enhances the business environment for broadband, mobile wireless, information technology, networks, cable, satellite and unified communications. Members' products and services empower communications in every industry and market, including healthcare, education, security, public safety, transportation, government, the military, the environment and entertainment. TIA co-owns the SUPERCOMM® tradeshow and is accredited by the American National Standards Institute (ANSI). Visit tiaonline.org.
TIA's Board of Directors includes senior-level executives from ACS, ADC, ADTRAN, Alcatel-Lucent, ANDA Networks, ArrayComm, AttivaCorp, Avaya, Bechtel Communications, Inc., Cisco Systems, Corning Incorporated, Ericsson, Inc., GENBAND, Inc., Graybar, Henkels & McCoy, ILS Technology, Intel Corporation, Intersect, Inc., LGE, Microsoft, Motorola, Nokia Siemens Networks, Nortel, Panasonic Computer Solutions Co., Qualcomm, Research In Motion, Sumitomo Electric Lightwave Corporation, Tellabs, Tyco Electronics, Ulticom, Inc., and Verari Systems. Advisors to the Board include FAL Associates, Orca Systems and Telcordia Technologies.
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